CN100477336C - Battery pack and manufacturing method thereof - Google Patents

Battery pack and manufacturing method thereof Download PDF

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Publication number
CN100477336C
CN100477336C CNB2005800177284A CN200580017728A CN100477336C CN 100477336 C CN100477336 C CN 100477336C CN B2005800177284 A CNB2005800177284 A CN B2005800177284A CN 200580017728 A CN200580017728 A CN 200580017728A CN 100477336 C CN100477336 C CN 100477336C
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China
Prior art keywords
corbel back
back slab
electrode corbel
battery
platypelloid type
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CN1961439A (en
Inventor
渡边正司
丹上雄儿
太田正保
榎田刚
岸本洋明
雨谷龙一
濑川辉夫
早见宗人
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Envision AESC Japan Ltd
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Nissan Motor Co Ltd
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Priority to CN200910001525.6A priority Critical patent/CN101459233B/en
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    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
    • Y02E60/10—Energy storage using batteries

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Abstract

An assembled battery (100) is provided by stacking a plurality of flat batteries (10A-10F), with polarities of electrode tabs (11A-11F, 12A-12F) alternately arranged. A connecting part for connecting in series the flat batteries to be assembled when all the flat batteries (10A-10F) are stacked is separated to a plurality of positions in the assembled battery. The assembled battery has a structure wherein all the flat batteries are electrically connected in series by connecting the connecting parts.

Description

Battery pack and manufacture method thereof
Technical field
The present invention relates to a kind of battery pack and manufacture method thereof that can with the ultrasonic wave joint electrode corbel back slab of platypelloid type battery is bonded with each other easily.
Background technology
In recent years, corresponding to the raising of environmental consciousness, the trend that the power source of automobile is shifted to the motor that utilizes electric energy from the engine that uses fossil fuel was arranged.Therefore, become the motor power source battery technology also rapidly the development.
But the small-sized light weight frequent charge battery big electric power, vibration resistance, fine heat radiation property that discharges is carried in hope on automobile.Should these requirements, in recent years, developed shown in Japanese Unexamined Patent Publication No 2004-31136 communique, be connected in series many platypelloid type batteries and the battery pack that constitutes.
Summary of the invention
For with high efficiency charging, the big electric power that discharges, require the battery pack Towards Higher Voltage.In order to make the battery pack Towards Higher Voltage, need be connected in series constitutes a plurality of platypelloid type batteries of battery pack.For a plurality of platypelloid type batteries that are connected in series, make the electrode corbel back slab direction positive and negative electrode of platypelloid type battery differently stacked mutually, the positive and negative electrode corbel back slab of the platypelloid type battery after stacked in groups, use mechanical mechanisms such as ultrasonic wave jointing machine or packing ring to begin to make in order positive and negative electrode corbel back slab in groups to be bonded with each other from the downside or the upside of stacked direction.
But there are the following problems for these joint methods.
At first, when using the ultrasonic wave jointing machine to engage, must only clamp with the head of ultrasonic wave jointing machine and want the electrode corbel back slab (positive and negative electrode corbel back slab in groups) that engages, so can not under the state of stacked good all platypelloid type batteries, carry out, insertion space in order to ensure head, need make the platypelloid type battery except that engaging object temporarily remove (to opening up and down of stacked direction), not only its operation is pretty troublesome so exist, and the automation of its operation is difficulty also, produces unnecessary problems such as stress on the electrode corbel back slab that joint finishes.
Secondly, when carrying out mechanical engagement,, might produce the inhomogeneous of contact resistance or produce because of relaxing that vibration causes existing problems aspect durable reliability, maintainability owing to used mechanical mechanisms such as bolt and nut, packing ring.
The object of the present invention is to provide and a kind ofly can be easily engage that the electrode corbel back slab that makes the platypelloid type battery is bonded with each other, durable reliability, battery pack and manufacture method thereof that maintainability is good with ultrasonic wave.
A kind of battery pack of the present invention, so that the stacked a plurality of batteries of the mode of the alternating polarity of electrode corbel back slab form, it is characterized in that, have such structure: the electrode corbel back slab shape of each battery is corresponding to stacked position and difference, bonding station in groups, that be used for above-mentioned electrode corbel back slab that battery is connected in series is mutually divided a plurality of directions to above-mentioned battery pack when all battery stack have been got up, and is electrically connected in series all batteries by engaging each above-mentioned junction surface.
The manufacture method of a kind of battery pack of the present invention, it is characterized in that, comprise: make insulator be arranged in groups battery to each other, the stage that the electrode corbel back slab of battery is bonded with each other and makes a plurality of unit, the electrode corbel back slab shape of this each battery is corresponding to stacked position and difference, makes that the bonding station with the electrode corbel back slab divides to a plurality of directions; To mix said units, battery cell and insulator, the mode of alternately laminated battery and insulator, and in groups the junction surface of above-mentioned electrode corbel back slab is in the stacked above-mentioned battery of mode of diverse location and the stage of above-mentioned insulator so that all battery stack are got up, and the junction surface of above-mentioned electrode corbel back slab is used for battery is connected in series mutually; To be in the stage that the junction surface of diverse location engages in order.
Other purpose, feature and speciality of the present invention is by being well understood to reference to later explanation and the illustrated preferred forms of accompanying drawing.
Description of drawings
Fig. 1 is the outside drawing of the execution mode 1 of battery pack of the present invention.
Fig. 2 is the figure of situation of electrode corbel back slab that comes the platypelloid type battery of knitting layer poststack with the ultrasonic wave jointing machine.
Fig. 3 is the figure of the status of electrically connecting of expression battery pack.
Fig. 4 is the figure for the necessary platypelloid type battery of the battery pack that constitutes execution mode 1.
Fig. 5 is the figure for the necessary insulating trip of battery pack that constitutes execution mode 1.
Fig. 6 is the figure of manufacture process that is used to illustrate the battery pack of execution mode 1.
Fig. 7 is the figure of manufacture process that is used to illustrate the battery pack of execution mode 1.
Fig. 8 is the outside drawing of the execution mode 2 of battery pack of the present invention.
Fig. 9 is the figure of expression for the necessary platypelloid type battery of the battery pack that constitutes execution mode 2.
Figure 10 is the figure of manufacture process that is used to illustrate the battery pack of execution mode 2.
Figure 11 is the figure of manufacture process that is used to illustrate the battery pack of execution mode 2.
Figure 12 is the figure of manufacture process that is used to illustrate the battery pack of execution mode 2.
Figure 13 is the figure of expression for another form of the necessary platypelloid type battery of the battery pack that constitutes execution mode 2.
Figure 14 is the figure of expression for another form of the necessary platypelloid type battery of the battery pack that constitutes execution mode 2.
Figure 15 is the figure of expression for another form of the necessary platypelloid type battery of the battery pack that constitutes execution mode 2.
Figure 16 is the figure of expression for another form of the necessary platypelloid type battery of the battery pack that constitutes execution mode 2.
Figure 17 is the figure of expression for the necessary platypelloid type battery of the battery pack that constitutes execution mode 3.
Figure 18 is the figure of expression for the necessary platypelloid type battery of the battery pack that constitutes execution mode 3.
Figure 19 is the figure of manufacture process that is used to illustrate the battery pack of execution mode 3.
Figure 20 is the figure of manufacture process that is used to illustrate the battery pack of execution mode 3.
Figure 21 is the figure of other manufacture processes that is used to illustrate the battery pack of execution mode 3.
Figure 22 is the figure of expression for the necessary platypelloid type battery of the battery pack that constitutes execution mode 4.
Figure 23 is the figure of manufacture process that is used to illustrate the battery pack of execution mode 4.
Figure 24 is the figure of expression for the necessary platypelloid type battery of the battery pack that constitutes execution mode 5.
Figure 25 is the figure of manufacture process that is used to illustrate the battery pack of execution mode 5.
Figure 26 is the figure of manufacture process that is used to illustrate the battery pack of execution mode 5.
Figure 27 is the figure of expression for the necessary platypelloid type battery of the battery pack that constitutes execution mode 6.
Figure 28 is the figure of manufacture process that is used to illustrate the battery pack of execution mode 6.
Figure 29 is the figure of expression for the necessary platypelloid type battery of the battery pack that constitutes execution mode 7.
Figure 30 is the figure of manufacture process that is used to illustrate the battery pack of execution mode 7.
Figure 31 is the figure of manufacture process that is used to illustrate the battery pack of execution mode 7.
Figure 32 is the figure of manufacture process that is used to illustrate the battery pack of execution mode 8.
Figure 33 is the figure of shape of platypelloid type battery of the battery pack of expression execution mode 9.
Figure 34 is the figure of manufacture process that is used to illustrate the battery pack of execution mode 9.
Figure 35 is the figure of manufacture process that is used to illustrate the battery of execution mode 9.
Figure 36 is the figure of manufacture process that is used to illustrate the battery of execution mode 9.
Figure 37 is the figure of manufacture process that is used to illustrate the battery of execution mode 9.
Figure 38 is the figure of manufacture process that is used to illustrate the battery of execution mode 9.
Figure 39 is the figure of manufacture process that is used to illustrate the battery of execution mode 9.
Figure 40 is the figure of manufacture process that is used to illustrate the battery of execution mode 9, (A) is the A-A cutaway view of Figure 39, (B) is the B-B cutaway view of Figure 39.
Figure 41 is the cutaway view of the battery of present embodiment.
Figure 42 is the outside drawing of the execution mode 10 of battery pack of the present invention.
Figure 43 is the figure of manufacture process that is used to illustrate the battery of execution mode 10.
Figure 44 is the figure of manufacture process that is used to illustrate the battery of execution mode 10, (A) is the figure of an example of expression folding mode, (B) is the figure of another example of expression folding mode.
Embodiment
Describe the battery pack and the manufacture method thereof of present embodiment below in detail based on accompanying drawing.Present embodiment is divided into " execution mode 1 " that constitutes battery pack with 6 kinds of variform 8 platypelloid type batteries of electrode corbel back slab, constitute " execution mode 2 " of battery pack with 4 kinds of variform 12 platypelloid type batteries of electrode corbel back slab, constitute " execution mode 3 " of battery pack with 3 kinds of variform 8 platypelloid type batteries of electrode corbel back slab, constitute " execution mode 4 " of battery pack with 4 kinds of variform 8 platypelloid type batteries of electrode corbel back slab, constitute " execution mode 5 " of battery pack with 6 kinds of 8 different platypelloid type batteries of electrode corbel back slab length, constitute " execution mode 6 " of battery pack with 3 kinds of 8 different platypelloid type batteries of electrode corbel back slab length, constitute " execution mode 7 " of battery pack with the length of 7 kinds of electrode corbel back slabs and variform 8 platypelloid type batteries, constitute " execution mode 8 " of battery pack with 6 kinds of 8 different platypelloid type batteries of electrode corbel back slab extraction location, constitute " execution mode 9 " of battery pack and connect " execution mode 10 " that sheet battery that a plurality of platypelloid type batteries form constitutes battery pack and describe by having platypelloid type battery with the toroidal of the electrode corbel back slab of regulation central angle configuration by folding.
Execution mode 1
Fig. 1 is the outside drawing of the execution mode 1 of battery pack of the present invention.The battery pack 100 of present embodiment is so that the battery pack that the mode of the alternating polarity of electrode corbel back slab forms 8 platypelloid type battery stack along the cell thickness direction.The battery pack 100 of present embodiment has such structure: when stacked all platypelloid type batteries, the junction surface that is used for the electrode corbel back slab that is connected in series mutually of platypelloid type battery that will be in groups is in a plurality of positions of battery pack, is electrically connected in series all platypelloid type batteries by will junction surface separately engaging.Specifically, the platypelloid type battery is rectangular when face is seen from it, and the junction surface of electrode corbel back slab is configured to length direction (among the figure laterally) at the platypelloid type battery and Width (among the figure vertically) and misplaces in each stacked position.Therefore, the shape of the electrode corbel back slab of drawing from the both sides of platypelloid type battery has intrinsic shape in each stacked position so that when stacked 8 platypelloid type batteries respectively in groups electrode corbel back slab divided to 4 directions.
And, being inserted with not shown insulating trip each other at the platypelloid type battery, this insulating trip has the function of the voltage that can detect each platypelloid type battery and makes the function that insulate between the electrode corbel back slab that should insulate.In order to realize above-mentioned two kinds of functions, similarly each stacked position has intrinsic shape at it for the shape of insulating trip and electrode corbel back slab shape.
Battery pack 100 is to be electrically connected in series the battery pack that all platypelloid type batteries form by the electrode corbel back slab with the platypelloid type battery of ultrasonic wave jointing machine shown in Figure 2 200 knitting layer poststacks.As shown in Figure 1, because the outstanding part of the electrode corbel back slab of battery pack is divided to 4 directions, so can be by will being positioned at topmost and platypelloid type battery under it is connected in series mutually with ultrasonic wave bonding electrodes corbel back slab group 110A, can be by being connected in series mutually being positioned at from last several third and fourth platypelloid type batteries with ultrasonic wave bonding electrodes corbel back slab group 110B, can be by will be positioned at ultrasonic wave bonding electrodes corbel back slab group 110C being connected in series mutually from several third and fourth platypelloid type batteries down, can by with ultrasonic wave bonding electrodes corbel back slab group 110D be positioned at bottom with its on the platypelloid type battery be connected in series mutually.The above quilt of ultrasonic wave joint divides when the electrode corbel back slab at 4 places of 4 directions, and then all 8 platypelloid type batteries are connected in series.
In addition, be provided with voltage detection terminal function, not shown that realization can detect the voltage of platypelloid type battery in the single face side that is positioned at platypelloid type battery insulating trip each other, that have the insulator function.Owing at voltage detection terminal lead is installed,, draws 3 lead group 120B from opposite side so draw 4 lead group 120A from battery pack 100 1 sides.Each lead is connected with not shown voltage detector, checks the operating state of each platypelloid type battery by monitoring its voltage.
In the battery pack of present embodiment, can be divided at unduplicated 4 places of stacked direction all the platypelloid type battery electricity after stacked are engaged, so can directly engage all platypelloid type batteries in stacked back, thereby not only operation is good, also transfiguration is easy in the automation of joint operation.And the electrode corbel back slab that finishes at joint can not produce unnecessary stress, does not have mechanical engagement parts such as bolt and nut, packing ring, so good aspect durable reliability, maintainability.
When the battery pack with present embodiment is equipped on vehicle, between battery pack and battery pack, insert heat abstractor and be laminated into 3 layers, with transversely arranged 4 row of the battery pack that is laminated into 3 layers, fix with heat abstractor in the mode of clamping all battery pack from the both sides of stacked direction.The mode of drawing mutually with the power of regulation fixes the heat abstractor that is positioned at the stacked direction both sides.Thereby, all platypelloid type batteries are applied equably the pushing force of regulation.
Like this, in the battery pack that 3 layers * 4 row are=12, the battery pack that is positioned at stacked direction is connected in series by directly the electrode corbel back slab being interconnected, in the superiors' battery pack adjacent with orlop by the electrode corbel back slab being interconnected with busbar, thereby all battery pack are connected in series.In Fig. 3, represented this status of electrically connecting.As shown in the figure, battery pack 100A, 100B, 100C that the formation of first row is 3 layers all are connected in series at stacked direction as shown like that.In addition, the electrode corbel back slab (graphical indicia * part) that engages the platypelloid type battery will constitute each battery pack 100A, 100B, 100C by ultrasonic wave is bonded with each other as described above, interconnects by the electrode corbel back slab (part of graphical indicia zero) that welds battery pack.Equally also carry out being connected of the 2nd～4 battery pack electrode corbel back slab each other that is listed as with first row.In addition, busbar 130A, 130B are last to be connected by being welded on to be positioned at undermost battery pack electrode corbel back slab each other, and the battery pack electrode corbel back slab each other that is positioned at the superiors upward is connected by being welded on busbar 130C.
If all battery pack are connected in series ,=96 all platypelloid type batteries of then 8 * 3 layers * 4 row are connected in series, at the high voltage that can obtain 3.85V/ * 96=370V between electrode terminal 140A, the 140B of the one-sided heat abstractor of stacked direction.
Below, the manufacture method of the battery pack of present embodiment is described.
For the bonding station with the electrode corbel back slab is divided into 4 directions, the battery pack 100 of present embodiment is except platypelloid type battery 100A shown in Figure 4, its+side or-at least one electrode corbel back slab of side is the L font, for the junction surface that makes the electrode corbel back slab is divided into a plurality of positions stacked behind the platypelloid type battery time, the electrode corbel back slab shape that makes each platypelloid type battery is corresponding to stacked position and difference.Fig. 4 is the kind (the shape difference of electrode corbel back slab) of expression in order to constitute present embodiment battery pack 100 necessary platypelloid type batteries.Battery pack 100 is that stacked 8 platypelloid type batteries form, but for the bonding station branch that makes the electrode corbel back slab to 4 directions, need have the platypelloid type battery of 6 kinds of shape electrode corbel back slabs as shown in the figure.
At first, the electrode corbel back slab that to be positioned at undermost platypelloid type battery 10A be both sides is identical shaped rectangular battery.An electrode corbel back slab 11B who is positioned at the following platypelloid type battery 10B of the number second layers for the identical rectangle of electrode corbel back slab of platypelloid type battery 10A, and another electrode corbel back slab 12B is the font of falling L.An electrode corbel back slab 11C who is positioned at several the 3rd layer down platypelloid type battery 10C is the font of falling L, and another electrode corbel back slab 12C is a rectangle.An electrode corbel back slab 11D who is positioned at several the 4th layer down platypelloid type battery 10D is a rectangle, and another electrode corbel back slab 12D is the L font.Being positioned at an electrode corbel back slab 11E who counts the platypelloid type battery 10E of layer 5 down is the upset font of falling L, and another electrode corbel back slab 12E is the L font same with platypelloid type battery 10D.At last, being positioned at the electrode corbel back slab 11F that counts the platypelloid type battery 10F of layer 6 down is upset the fall L font same with platypelloid type battery 10E, and another electrode corbel back slab 12F is a rectangle.In addition, the platypelloid type battery that is positioned at the superiors is stacked and the identical battery of platypelloid type battery 10C, and the platypelloid type battery that is positioned at the number second layers is stacked and the identical battery of platypelloid type battery 10B.
More than be to have narrated the kind that supposition can not transfer the table turning in of platypelloid type battery the platypelloid type battery that should prepare when stacked, but if can make the table turning in transfer stacked, platypelloid type battery 10B is turned over can be general with platypelloid type battery 10D, platypelloid type battery 10C is turned over can be general with platypelloid type battery 10F, so in this case, as long as prepare 4 kinds of platypelloid type batteries.
In addition, in the battery pack 100 of present embodiment, for the platypelloid type battery each other insulation and in order to detect the voltage of platypelloid type battery, use 7 insulating trips.For the insulation between the electrode corbel back slab of seeking insulate, insulating trip and platypelloid type battery similarly make its shape corresponding to stacked position and different.Fig. 5 is the kind of representing for the battery pack 100 necessary insulating trips that constitute present embodiment.For the insulation between the electrode corbel back slab of seeking insulate, need illustrated 5 kinds of insulating trips.
At first, insulating trip 20A with the electrode corbel back slab on do not have the corresponding position of electrode corbel back slab 12A protuberance, for example platypelloid type battery 10A to be formed with electrode corbel back slab insulation division 22A, 22A is provided with voltage detection terminal 24A at electrode corbel back slab insulation division.Voltage detection terminal 24A is pasted on the surface of electrode corbel back slab insulation division 22A.Thereby the electrode corbel back slab that voltage detection terminal 24A is in contact with it when stacked provides the voltage of platypelloid type battery.Though not shown, 24A is connected with lead at voltage detection terminal, thus be located at outside voltage detector etc. and be connected.
Position and insulating trip 20A that insulating trip 20B is provided with electrode corbel back slab insulation division 22B differ 180 degree.22B is pasted with voltage detection terminal 24B at electrode corbel back slab insulation division.
Insulating trip 20C with the electrode corbel back slab on have the corresponding position of the electrode corbel back slab 12B of the word shape of falling L protuberance, for example platypelloid type battery 10B to be formed with electrode corbel back slab insulation division 22C, at electrode corbel back slab insulation division 22C is not that the position of protuberance is pasted with voltage detection terminal 24C.
The difference of insulating trip 20D and insulating trip 20C be electrode corbel back slab insulation division 22C be shaped as the L font.At electrode corbel back slab insulation division 22D is not that the position of protuberance is provided with voltage detection terminal 24D.
Position and insulating trip 20C that insulating trip 20E is provided with electrode corbel back slab insulation division 22E differ 180 degree.22E is pasted with voltage detection terminal 24E at electrode corbel back slab insulation division.
When making the battery pack of present embodiment, arrange platypelloid type battery and insulating trip as shown in Figure 6 and carry out stacked as shown in Figure 7.Specifically, from the orlop to the superiors, undertaken stacked by the order of platypelloid type battery 10A shown in Figure 4, insulating trip 20A shown in Figure 5, platypelloid type battery 10B, insulating trip 20B, platypelloid type battery 10C, insulating trip 20C, platypelloid type battery 10D, insulating trip 20B, platypelloid type battery 10E, insulating trip 20D, platypelloid type battery 10F, insulating trip 20E, platypelloid type battery 10B, insulating trip 20A, platypelloid type battery 10C.
Before stacked, engage and to be bonded with each other with mark * illustrated electrode corbel back slab among Fig. 6 and to make the unit with ultrasonic wave earlier.As shown in Figure 6, the unit number of in advance making is 3 unit.
At first, insulator is set each other, and the electrode corbel back slab of platypelloid type battery is bonded with each other and makes a plurality of unit in groups platypelloid type battery.That is, placement insulating trip 20A also places platypelloid type battery 10B thereon on platypelloid type battery 10A.Insulating trip 20A with voltage detection terminal 24A and platypelloid type battery 10B+mode that lateral electrode corbel back slab 12B contacts disposes.To platypelloid type battery 10A+lateral electrode corbel back slab 12A and platypelloid type battery 10B-lateral electrode corbel back slab 11B carries out ultrasonic wave and engages.Ultrasonic wave engages when finishing, and then forms the unit that is made of the platypelloid type battery 10A and the 10B that clip insulating trip 20A state.The unit that platypelloid type battery 10C and 10D by the state that clips insulating trip 20C are constituted, the unit that is made of platypelloid type the battery 10B and the 10F of the state that clips insulating trip 20E also are to carry out such unit equally to form.
Secondly, make platypelloid type battery and insulator by alternately stacked and come stacked platypelloid type battery and insulator mutually to mix said units, platypelloid type battery cell and insulator so that the junction surface of the electrode corbel back slab of the platypelloid type battery that will be used in groups when stacked all platypelloid type batteries being connected in series mutually is divided in the mode of diverse location.That is, mix as mentioned above the unit that forms, and stacked as shown in Figure 7 platypelloid type battery and insulating trip, just form in appearance battery pack 100 as shown in Figure 1.With all electrode corbel back slabs still the battery pack 100 of not engaged state take ultrasonic wave jointing machine 200 to, as shown in Figure 2, ultrasonic wave bonding electrodes corbel back slab group 110A at first, then be positioned at the superiors platypelloid type battery 10C-lateral electrode corbel back slab 11C be positioned at platypelloid type battery 10B under it+lateral electrode corbel back slab 12B is engaged.Carrying out the ultrasonic wave engaging portion is the illustrated ledge of usefulness mark △ of electrode corbel back slab 11C and electrode corbel back slab 12B.Platypelloid type battery 10B and the platypelloid type battery 10F that is positioned under it are a unit, so their electrode corbel back slab 11B, 12F are engaged, in addition, the electrode corbel back slab insulation division 22A of insulating trip 20A makes the electrode corbel back slab 11B insulation of electrode corbel back slab 12C and the platypelloid type battery 10B of platypelloid type battery 10C, the electrode corbel back slab insulation division 22E of insulating trip 20E makes the electrode corbel back slab 11F insulation of electrode corbel back slab 12B and the platypelloid type battery 10F of platypelloid type battery 10B, so, by bonding electrodes corbel back slab group 110A, 3 platypelloid type battery 10C, 10B, 10F are electrically connected in series.In addition, the voltage detection terminal 24A of insulating trip 20A contacts with the electrode corbel back slab 12C of platypelloid type battery 10C, the voltage detection terminal 24E of insulating trip 20E contacts with the electrode corbel back slab 12B of platypelloid type battery 10B, so, just learn the voltage of platypelloid type battery 10C by measuring the voltage between voltage detection terminal 24A, the 24E.
Then, electrode corbel back slab group 110B is carried out ultrasonic wave engages (with reference to Fig. 2), then platypelloid type battery 10F-lateral electrode corbel back slab 11F be positioned at platypelloid type battery 10E under it+lateral electrode corbel back slab 12E is engaged.Being carried out the ultrasonic wave engaging portion is the illustrated ledge of usefulness mark △ of electrode corbel back slab 11F and electrode corbel back slab 12E.The electrode corbel back slab insulation division 22D of insulating trip 20D makes the electrode corbel back slab 11E insulation of electrode corbel back slab 12F and the platypelloid type battery 10E of platypelloid type battery 10F, so, by bonding electrodes corbel back slab group 110B, 4 platypelloid type battery 10C, 10B, 10F, 10E are electrically connected in series.In addition, the voltage detection terminal 24E of insulating trip 20E contacts with the electrode corbel back slab 12B of platypelloid type battery 10B, the voltage detection terminal 24D of insulating trip 20D contacts with the electrode corbel back slab 12F of platypelloid type battery 10F, so, just learn the voltage of platypelloid type battery 10B by measuring the voltage between voltage detection terminal 24E, the 24D.
Then, electrode corbel back slab group 110C is carried out ultrasonic wave engages (with reference to Fig. 2), then platypelloid type battery 10E-lateral electrode corbel back slab 11E be positioned at platypelloid type battery 10D under it+lateral electrode corbel back slab 12D is engaged.Carrying out the ultrasonic wave engaging portion is the illustrated ledge of usefulness mark △ of electrode corbel back slab 11E and electrode corbel back slab 12D.Because platypelloid type battery 10D and the platypelloid type battery 10C that is positioned under it are a unit, so their electrode corbel back slab 11D, 12C is engaged, and, the electrode corbel back slab insulation division 22B of insulating trip 20B makes the electrode corbel back slab 11D insulation of electrode corbel back slab 12E and the platypelloid type battery 10D of platypelloid type battery 10E, the electrode corbel back slab insulation division 22C of insulating trip 20C makes the electrode corbel back slab 11C insulation of electrode corbel back slab 12D and the platypelloid type battery 10C of platypelloid type battery 10D, so, by bonding electrodes corbel back slab group 110C, 6 platypelloid type battery 10C, 10B, 10F, 10E, 10D, 10C is electrically connected in series.In addition, the voltage detection terminal 24D of insulating trip 20D contacts with the electrode corbel back slab 12F of platypelloid type battery 10F, the voltage detection terminal 24B of insulating trip 20B contacts with the electrode corbel back slab 12E of platypelloid type battery 10E, and the voltage detection terminal 24C of insulating trip 20C contacts with the electrode corbel back slab 12D of platypelloid type battery 10D, so by measuring the voltage between voltage detection terminal 24D, the 24B, learn the voltage of platypelloid type battery 10F, by measuring the voltage between voltage detection terminal 24B, the 24C, learn the voltage of platypelloid type battery 10E.
At last, the junction surface that is in diverse location is engaged in order.Electrode corbel back slab group 110D is carried out ultrasonic wave engages (with reference to Fig. 2), then platypelloid type battery 10C-lateral electrode corbel back slab 11C be positioned at platypelloid type battery 10B under it+lateral electrode corbel back slab 12B is engaged.Being carried out the ultrasonic wave engaging portion is the illustrated ledge of usefulness mark △ of electrode corbel back slab 11C and electrode corbel back slab 12B.Platypelloid type battery 10B and the platypelloid type battery 10A that is positioned under it are unit, so their electrode corbel back slab 11B, 12A is engaged, and, the electrode corbel back slab insulation division 22B of insulating trip 20B makes the electrode corbel back slab 11B insulation of electrode corbel back slab 12C and the platypelloid type battery 10B of platypelloid type battery 10C, the electrode corbel back slab insulation division 22A of insulating trip 20A makes the electrode corbel back slab 11A insulation of electrode corbel back slab 12B and the platypelloid type battery 10A of platypelloid type battery 10B, so, by bonding electrodes corbel back slab group 110D, make all 8 platypelloid type battery 10C that constitute battery pack 100,10B, 10F, 10E, 10D, 10C, 10B, 10A is electrically connected in series.In addition, the voltage detection terminal 24C of insulating trip 20C contacts with the electrode corbel back slab 12D of platypelloid type battery 10D, the voltage detection terminal 24B of insulating trip 20B contacts with the electrode corbel back slab 12C of platypelloid type battery 10C, and the voltage detection terminal 24A of insulating trip 20A contacts with the electrode corbel back slab 12B of platypelloid type battery 10B, so, by measuring the voltage between voltage detection terminal 24C, the 24B, learn the voltage of platypelloid type battery 10D, by measuring the voltage between voltage detection terminal 24B, the 24A, learn the voltage of platypelloid type battery 10C.
In addition, in above formation, can not measure and be positioned at orlop and position platypelloid type battery 10A, the voltage of 10B thereon, but, just can measure the voltage of platypelloid type battery 10A, 10B by stacked insulating trip 20B under undermost platypelloid type battery 10A.
As mentioned above, according to the manufacture method of the battery pack of present embodiment, use 8 platypelloid type batteries and 7 insulating trips, alternately laminated platypelloid type battery and insulating trip, and the electrode corbel back slab group 110A to 110D that is in 4 places is carried out ultrasonic wave engage, thereby can make battery pack 100.The ultrasonic wave engaging portion is dispersed in 4 directions, so can directly engage operation under the state of stacked good all platypelloid type batteries.Therefore, increased the freedom shape of ultrasonic wave jointing machine head, the automation transfiguration that engages operation is easy.In addition, engage, do not have the mechanical engagement part with ultrasonic wave, thus can not produce contact resistance uneven or produce because of vibration cause lax, can keep sufficient reliability aspect durable reliability, the maintenance.
In addition, though be necessary between the platypelloid type battery, insulating trip to be set, as long as stacked insulating trip just can obtain the insulation between the electrode corbel back slab, in addition owing to be pasted with voltage detection terminal, so do not need only to make voltage detection terminal to be connected to the operation of electrode corbel back slab, thereby improved operation.And, if make insulating trip have the elastic force of appropriateness and the mantle friction of appropriateness, just can apply appropriate plus-pressure, can prevent the dislocation of platypelloid type battery stacked good platypelloid type battery.
Execution mode 2
Fig. 8 is the outside drawing of the execution mode 2 of battery pack of the present invention.The battery pack 300 of present embodiment is along stacked 12 battery pack that the platypelloid type battery forms of cell thickness direction.The shape of the electrode corbel back slab of drawing from the both sides of platypelloid type battery has fixed shape in each stacked position, so that bonding station is different position when engaging 12 platypelloid type batteries in order.By engaging the electrode corbel back slab that is electrically connected the platypelloid type battery with ultrasonic wave jointing machine shown in Figure 2 200.As shown in Figure 8, the electrode corbel back slab of battery pack 300 is in the completion status that is combined, and its outstanding part 310A, 310B, 310C, 310D is divided to 4 directions.Battery pack 300 is under the completion status that is combined, and 12 platypelloid type batteries all are connected in series.
When carrying the battery pack of present embodiment on the vehicle, between battery pack and battery pack, insert heat abstractor and stacked 2 layers, transversely arranged 4 row of stacked 2 layers battery pack, fix with heat abstractor in the mode of clamping all battery pack from the stacked direction both sides.Be fixed in the heat abstractor of stacked direction both sides in the mode of drawing mutually with the power of regulation.Thereby, all platypelloid type monocells are applied equably the pushing force of regulation.
Like this, the battery pack that 2 layers * 4 row are=8, with execution mode 1 similarly, the battery pack that is positioned at stacked direction is connected in series by directly the electrode corbel back slab being interconnected, the battery pack adjacent with orlop in the superiors is connected in series by with busbar the electrode corbel back slab being interconnected, thereby all battery pack are connected in series.
If all battery pack are connected in series,=96 platypelloid type batteries of then 12 * 2 layers * 4 row all are connected in series, at the high voltage of 3.85V/ * 96=370V of (with reference to Fig. 3) acquisition between electrode terminal 140A, the 140B of the one-sided heat abstractor of stacked direction.
The following describes the manufacture method of the battery pack of present embodiment.
For the bonding station of electrode corbel back slab is divided to 4 directions, the electrode corbel back slab shape that the battery pack 300 of present embodiment makes each platypelloid type battery is corresponding to stacked position and difference.Fig. 9 represents for the kind that constitutes present embodiment battery pack 300 necessary platypelloid type batteries (the shape difference of electrode corbel back slab).Battery pack 300 is that stacked 12 platypelloid type batteries form, but for the bonding station branch that makes the electrode corbel back slab to 4 directions, need have the platypelloid type battery of 4 kinds of shape electrode corbel back slabs as shown in the figure.
A type platypelloid type battery 30A is that a part is cut away in the left side the when top in the face of-lateral electrode corbel back slab 31A of-lateral electrode corbel back slab 31A is seen, a part is cut away on the right side the when top in the face of+lateral electrode corbel back slab 32A of+lateral electrode corbel back slab 32A is seen.The platypelloid type battery 30B of Type B is that a part is cut away on the right side when the seeing in the face of the top of electrode corbel back slab 31B, 32B respectively of electrode corbel back slab 31B, the 32B of both sides respectively, and the left side when the seeing in the face of the top of electrode corbel back slab 31B, 32B respectively of electrode corbel back slab 31B, 32B has protuberance 33B, 34B respectively.C type platypelloid type battery 30C is that a part is cut away on the right side when seeing on the top in the face of-lateral electrode corbel back slab 31C of-lateral electrode corbel back slab 31C, a part is cut away in the left side when seeing on the top in the face of+lateral electrode corbel back slab 32C of+lateral electrode corbel back slab 32C.The platypelloid type battery 30D of D type is that a part is cut away in the left side when the seeing in the face of the top of electrode corbel back slab 31D, 32D respectively of electrode corbel back slab 31D, the 32D of both sides respectively, and the right side when the seeing in the face of the top of electrode corbel back slab 31D, 32D respectively of electrode corbel back slab 31D, 32D has protuberance 33D, 34D respectively.
More than be to have narrated the kind that supposition can not transfer the table turning in of platypelloid type battery the platypelloid type battery that should prepare when stacked, but if can make platypelloid type battery table turning in transfer stacked, platypelloid type battery 30A is turned over can be general with platypelloid type battery 30C, platypelloid type battery 30B is turned over can be general with platypelloid type battery 30D, so in this case, as long as prepare 2 kinds of platypelloid type batteries.
When making the battery pack of present embodiment, arrange the platypelloid type battery as shown in Figure 10 and Figure 11 like that and carry out stacked as shown in Figure 12.Specifically, from the orlop to the superiors, by the sequential cascade of platypelloid type battery 30A shown in Figure 8,30C, 30D, 30D, 30A, 30B, 30C, 30D, 30A, 30C, 30D, 30D.
Before stacked, 33 ground combination Figure 10, platypelloid type battery shown in Figure 11, ultrasonic wave engage and the electrode corbel back slab is bonded with each other and makes unit (Unit the 1st).That is, make in advance as shown in figure 10, combination platypelloid type battery 30D, unit a, combination platypelloid type battery 30A that 30D, 30C form, unit b that 30D, 30C form, as shown in figure 11, combination platypelloid type battery 30B, unit c, combination platypelloid type battery 30D that 30A, 30D form, unit d that 30C, 30A form amount to Unit 4.
When making each unit, will be bonded with each other with the electrode corbel back slab that Figure 10 is connected with dotted line shown in Figure 11 with ultrasonic wave jointing machine 200 shown in Figure 2.For example in Figure 10, when making the unit a that combination platypelloid type battery 30D, 30D, 30C form, at first, engage be positioned at undermost platypelloid type battery 30C+the protuberance 34C of lateral electrode corbel back slab 32C and position platypelloid type battery 30D thereon-the protuberance 33D of lateral electrode corbel back slab 31D; Then, engage the platypelloid type battery 30D be positioned at the superiors-the protuberance 33D of lateral electrode corbel back slab 31D and be positioned at platypelloid type battery 30D under it+the protuberance 34D of lateral electrode corbel back slab 32D.Engage by above order, then can engage, so it is easy to engage operation in diverse position.
As shown in figure 12, between electrode corbel back slab 32D and electrode corbel back slab 31D, be provided as the insulant 40 of insulating element so that be positioned at the superiors platypelloid type battery 30D+lateral electrode corbel back slab 32D not with the platypelloid type battery 30D that is positioned at its downside-lateral electrode corbel back slab 31D is electrically connected.Insulant 40 can be the parts of sheet, also can be to paste insulating tape at the lower surface (direction as shown) of electrode corbel back slab 32D.Equally, between electrode corbel back slab 32D and electrode corbel back slab 31C, insulant 40 is set so that be positioned at undermost platypelloid type battery 30C-lateral electrode corbel back slab 31C not with position platypelloid type battery 30D thereon+lateral electrode corbel back slab 32D is electrically connected.With above-mentioned 3 unit that similarly make Figure 10 and remainder shown in Figure 11.In addition, in Figure 12, and the identical shaped figure of insulant 40 is to be used to make the insulant that insulate between all electrode corbel back slabs.
Then, as shown in figure 12, joint unit a and unit b and production unit α (Unit the 2nd).As shown in figure 10, the joint of unit a and unit b is to be undertaken by the protuberance 34A of electrode corbel back slab 31A of protuberance 33C and the platypelloid type battery 30A that is positioned at the unit b the superiors that joint is positioned at the electrode corbel back slab 31C of the undermost platypelloid type battery of unit a 30C.Further, joint unit c and unit d and production unit β.As shown in figure 11, the joint of unit c and unit d is to be undertaken by the protuberance 34D of electrode corbel back slab 32D of protuberance 33D and the platypelloid type battery 30D that is positioned at the unit d the superiors that joint is positioned at the electrode corbel back slab 31D of the undermost platypelloid type battery of unit c 30D.When as described above the unit being bonded with each other, the protuberance that then becomes the electrode corbel back slab that engages object is positioned at the position that not hindered by other parts, so it is easy to engage operation.
At last, joint unit α and unit β and make the battery pack of present embodiment.As shown in figure 12, the joint of unit α and unit β is to be undertaken by the protuberance 34B of electrode corbel back slab 32B of protuberance 33C and the platypelloid type battery 30B that is positioned at the unit β the superiors that joint is positioned at the electrode corbel back slab 31C of the undermost platypelloid type battery of unit α 30C.When joint unit α and unit β, the protuberance that then becomes the electrode corbel back slab that engages object is positioned at the position that not hindered by other parts as described above, so it is easy to engage operation.
As mentioned above, the battery pack of present embodiment, production unit a, b, c, d, joint unit a, b and production unit α then, follow joint unit c, d and production unit β, last joint unit α and unit β and form battery pack can carry out in the position that not hindered by other electrode corbel back slabs owing to engage each unit, so it is easy to engage operation.Therefore, increased the degree of freedom of the nose shape of ultrasonic wave jointing machine, the automation transfiguration that engages operation is easy.In addition, use ultrasonic wave to engage, and do not have the mechanical engagement part, thus can not produce contact resistance uneven or can not produce because of vibration cause lax, can keep sufficient reliability aspect durable reliability, the maintainability.
Figure 13 to Figure 16 is that expression is in order to constitute other forms of the necessary platypelloid type battery of battery pack of the present invention.In execution mode 1, new additional protuberance on the electrode corbel back slab of common platypelloid type battery and make the electrode corbel back slab be shaped as the L font, and form the shape of extending to both direction.In addition, in execution mode 2, be the part of the electrode corbel back slab by cutting common platypelloid type battery form that protuberance makes the electrode corbel back slab be shaped as the L font, and form the shape of extending to both direction.From Figure 13 to Figure 15 is to carry out various distortion by the shape that makes the electrode corbel back slab to realize the shape of extending to both direction, and in addition, Figure 16 realizes the shape of extending to 3 directions.By making up any of these illustrated shapes, the battery pack that can finish assembling at different engagement position electrode corbel back slabs, maybe can make in the process of forming battery pack at different engagement position electrode corbel back slabs.
Execution mode 3
The battery pack of present embodiment is to be combined in stacked 8 battery pack that the platypelloid type battery with 3 kinds of electrode corbel back slab shapes as shown in figure 17 forms of cell thickness direction with regulation.The shape of the electrode corbel back slab of drawing from platypelloid type battery both sides has intrinsic shape in each stacked position, so that its bonding station is positioned at different positions when engaging 8 platypelloid type batteries in order.Make its electrical connection by the electrode corbel back slab of platypelloid type battery being engaged with ultrasonic wave jointing machine 200 shown in Figure 2.State after its assembling of electrode corbel back slab of battery pack is finished is identical with the Fig. 8 shown in the execution mode 2, and its outstanding part is divided to 4 directions.Its 8 platypelloid type batteries of the state of battery pack after assembling is finished all are connected in series.
In addition, in the present embodiment, carry the method, the interconnective method of battery pack is identical with execution mode 2 of completed battery pack on the vehicle, so omit its explanation.
Below, the manufacture method of the battery pack of present embodiment is described.
For the bonding station of electrode corbel back slab is divided to 4 directions, the shape of electrode corbel back slab that the battery pack of present embodiment makes each platypelloid type battery is corresponding to stacked position and difference.Figure 17 represents for the kind of the necessary platypelloid type battery of the battery pack that constitutes present embodiment (the shape difference of electrode corbel back slab).Battery pack is that stacked 8 platypelloid type batteries form, but in the present embodiment, for the bonding station with the electrode corbel back slab divides to 4 directions, and uses the platypelloid type battery with 3 kinds of shape electrode corbel back slabs as shown in the figure.
The platypelloid type battery 50A of A type, with-lateral electrode corbel back slab 51A and+the electrode corbel back slab of lateral electrode corbel back slab 52A both sides respectively respectively in the face of this-lateral electrode corbel back slab 51A and+left side when the top of lateral electrode corbel back slab 52A is seen cuts away a part, respectively in the face of this-lateral electrode corbel back slab 51A and+right side when the top of lateral electrode corbel back slab 52A is seen has protuberance 53A, 54A.The platypelloid type battery 50B of Type B, a part is cut away on the right side when seeing in the face of this electrode corbel back slab top during with-lateral electrode corbel back slab 51B, a part is cut away in the left side when seeing on this electrode corbel back slab top of+lateral electrode corbel back slab 52B, have in the face of-left side when lateral electrode corbel back slab 51B top is seen protuberance 53B, in the face of+right side when lateral electrode corbel back slab 52B top is seen has protuberance 53D.The platypelloid type battery 50C of C type, a part is cut away in the left side when seeing on this electrode corbel back slab top of-lateral electrode corbel back slab 50C, a part is cut away on the right side when seeing on this electrode corbel back slab top of+lateral electrode corbel back slab 52C, have in the face of-right side when lateral electrode corbel back slab 50C top is seen protuberance 53C, in the face of+left side when lateral electrode corbel back slab 52C top is seen has protuberance 54C.
As shown in figure 18, platypelloid type battery 50A～50C has rectangular electrode corbel back slab (cutting off before the corbel back slab).Cut off the part of this electrode corbel back slab and make as shown in figure 17 3 kinds of platypelloid type battery 50A～50C.Cut off the method for corbel back slab and can consider to have the whole bag of tricks, as shown in figure 18, it or not a part (corbel back slab cuts off example 1) that cuts the electrode corbel back slab simply, be helpless to engaging portion in interior integrally prescinding (corbel back slab cuts off example 2) method but will comprise, also can make the compact in size of the length direction of battery pack.
When making the battery pack of present embodiment, arrange platypelloid type battery and as shown in Figure 20 that it is stacked as shown in Figure 19.Specifically, as shown in figure 17, to orlop, come lamination by the order of platypelloid type battery 50A, 50B, 50C, 50A, 50B, 50C, 50A, 50B from the superiors.
Before stacked, will make up mutually with the platypelloid type battery shown in the dotted line of Figure 19, ultrasonic wave engages between the electrode corbel back slab of regulation and makes unit (Unit the 1st).That is, make in advance unit a as shown in figure 19, that combination platypelloid type battery 50A and 50B form, make up unit b, the unit c that platypelloid type battery 50C, 50A and 50B form respectively and amount to 3 unit.
When making each unit, Figure 19 is bonded with each other with the electrode corbel back slab that the dotted line shown in Figure 20 (left side) is connected with ultrasonic wave jointing machine 200 shown in Figure 2.For example in Figure 19, when making the unit a that combination platypelloid type battery 50A, 50B form, at first engage the platypelloid type battery 50B that is positioned at downside+the protuberance 54B of lateral electrode corbel back slab 52B and position platypelloid type battery 50A thereon-the protuberance 53A of lateral electrode corbel back slab 51A.In addition, when making unit b, the unit c that combination platypelloid type battery 50C, 50A and 50B form, at first, joint be positioned at the lower side platypelloid type battery 50B+the protuberance 54B of lateral electrode corbel back slab 52B and position platypelloid type battery 50A thereon-the protuberance 53A of lateral electrode corbel back slab 51A, then, engage the platypelloid type battery 50C be positioned at platypelloid type battery 50A upside-the protuberance 53C of lateral electrode corbel back slab 51C and platypelloid type battery 50A+the protuberance 54A of lateral electrode corbel back slab 52A.By as above just engaging and to engage in diverse position in proper order, so it is easy to engage operation.
When making these each unit, the insulant 40 as insulating element of regulation shape is set between electrode corbel back slab 52A and electrode corbel back slab 51B so that be positioned at upside platypelloid type battery 50A+lateral electrode corbel back slab 52A not with the platypelloid type battery 50B that is positioned at its downside-lateral electrode corbel back slab 51B is electrically connected.Insulant 40 can be the parts of sheet, also can be to paste insulating tape at the lower surface (direction as shown) of electrode corbel back slab 52A.Constitute between the electrode corbel back slab 52C of the electrode corbel back slab 51A of platypelloid type battery 50A of unit b and unit c and platypelloid type battery 50C, the insulant 40 of regulation shape also is set between the electrode corbel back slab 51B of the electrode corbel back slab 52A of platypelloid type battery 50A and platypelloid type battery 50B.
Then, as shown in figure 20, joint unit a and unit b and production unit α (Unit the 2nd).As shown in the figure, the joint of unit a and unit b is to be positioned at the protuberance 53B of electrode corbel back slab 51B of the undermost platypelloid type battery of unit a 50B and the protuberance 54C of electrode corbel back slab 52C that is positioned at the platypelloid type battery 50C of the unit b the superiors carries out by joint.Certainly, when carrying out joint unit a and b,, and insulant 40 is set between the electrode corbel back slab for fear of electrical connection between the electrode corbel back slab (52B, 51C) of a side that does not engage.As above like that when carrying out being bonded with each other of unit, the protuberance that then becomes the electrode corbel back slab that engages object is positioned at the position that not hindered by other parts, so it is easy to engage operation.
At last, joint unit α and unit c make the battery pack of present embodiment.As shown in figure 20, the joint of unit α and unit c is that the protuberance 54C of the electrode corbel back slab 52C of the protuberance 53B of the electrode corbel back slab 51B by will being positioned at the undermost platypelloid type battery of unit α 50B and the platypelloid type battery 50C that is positioned at the unit c the superiors engages and carries out.When as above carrying out the joint of unit α and unit c like that, the protuberance that then becomes the electrode corbel back slab that engages object is positioned at the position that not hindered by other parts, so it is easy to engage operation.
As mentioned above, the battery pack of present embodiment, production unit a, b, c, joint unit a, b and production unit α then, follow joint unit α and unit c and form battery pack, because the joint of unit can carry out in the position that not hindered by other electrode corbel back slabs separately, it is easy to engage operation.Therefore, increased the degree of freedom of ultrasonic wave jointing machine nose shape, the automation transfiguration that engages operation is easy.In addition,, do not have the mechanical engagement part owing to use ultrasonic wave to engage, thus can not produce contact resistance uneven or because of vibration cause lax, thereby can keep sufficient reliability aspect durable reliability, the maintenance.
In addition, in order to make battery pack by as above order, platypelloid type battery that can stacked electrode corbel back slab shape as shown in figure 21.Platypelloid type battery and Figure 20 shown in Figure 21, the position opposite of the protuberance of its electrode corbel back slab separately.That is, the position of the protuberance of the position of the protuberance of platypelloid type battery 50a and platypelloid type battery 50A shown in Figure 17 is antithesis, and is same, the position of the protuberance of platypelloid type battery 50b, 50c also with the position of the protuberance of platypelloid type battery 50B, 50C antithesis.Promptly use these platypelloid type batteries 50a～50c, also can be with the order same with joint sequency shown in Figure 20, and meanwhile form the unit in order and engage, thus battery pack can be made easily.
Execution mode 4
The battery pack of present embodiment is to be combined in stacked 8 battery pack that the platypelloid type battery with 4 kinds of electrode corbel back slab shapes shown in Figure 22 forms of cell thickness direction with regulation.Each stacked position has fixed shape to the shape of the electrode corbel back slab of drawing from platypelloid type battery both sides at it, so that when engaging 8 platypelloid type batteries in order, bonding station is positioned at different positions.The electrode corbel back slab that engages the platypelloid type battery with ultrasonic wave jointing machine 200 shown in Figure 2 is electrically connected.Under the state of electrode corbel back slab after assembling is finished of battery pack, with the Fig. 8 shown in the execution mode 2 similarly, its ledge is divided to 4 directions.Battery pack is under the state after assembling is finished 8 platypelloid type batteries all to be connected in series to form.
In addition, in the present embodiment, carry the method, the interconnective method of battery pack is identical with the method for execution mode 2 of completed battery pack on the vehicle, so omit its explanation.
Below, the manufacture method of the battery pack of present embodiment is described.
For the bonding station branch that makes the electrode corbel back slab to 4 directions, the shape of electrode corbel back slab that the battery pack of present embodiment makes each platypelloid type battery is corresponding to stacked position and difference.Figure 22 represents for the kind of the necessary platypelloid type battery of the battery pack that constitutes present embodiment (the shape difference of electrode corbel back slab).Stacked 8 platypelloid type batteries form battery pack, but in the present embodiment, for the bonding station branch that makes the electrode corbel back slab to 4 directions, used platypelloid type battery with 4 kinds of shape electrode corbel back slabs as shown.
The platypelloid type battery 60A of A type, with-lateral electrode corbel back slab 61A and+lateral electrode corbel back slab 62A both sides respectively in the face of-lateral electrode corbel back slab 61A and+right side when the top of lateral electrode corbel back slab 62A is seen cuts away a part, respectively in the face of-lateral electrode corbel back slab 61A and+there are protuberance 63A, 64A in left side when the top of lateral electrode corbel back slab 62A is seen.The platypelloid type battery 60B of Type B, a part is cut away on right side when the top in the face of this electrode corbel back slab of-lateral electrode corbel back slab 61B is seen, a part is cut away in left side when the top in the face of this electrode corbel back slab of+lateral electrode corbel back slab 62B is seen, and the right side when seeing in the face of the top of+lateral electrode corbel back slab 62B has protuberance 63B.The platypelloid type battery 60C of C type, a part is cut away in left side when the top in the face of this electrode corbel back slab of-lateral electrode corbel back slab 61C is seen, a part is cut away on right side when the top in the face of this electrode corbel back slab of+lateral electrode corbel back slab 62C is seen, and the right side when seeing in the face of the top of-lateral electrode corbel back slab 61C has protuberance 63C, the left side when seeing in the face of the top of+lateral electrode corbel back slab 62C that protuberance 64C is arranged.D type platypelloid type battery 60D, a part is cut away in left side when the top in the face of this electrode corbel back slab of-lateral electrode corbel back slab 61D is seen, a manoeuvre among various states or political grouping part is cut in left side when the top in the face of this electrode corbel back slab of+lateral electrode corbel back slab 62D is seen, in the face of this+there are protuberance 63D, 64D in right side when the top of lateral electrode corbel back slab 62D is seen.
When making the battery pack of present embodiment, arrange platypelloid type battery and it is stacked as shown in figure 23 like that.Specifically, to the superiors, come stacked from orlop by the order of platypelloid type battery 60A shown in Figure 22,60A, 60B, 60C, 60A, 60B, 60D, 60C.
Before stacked, the platypelloid type battery shown in the ∨ point of Figure 23 is made up mutually, by ultrasonic wave engage will regulation the electrode corbel back slab be bonded with each other and produce unit (Unit the 1st).Promptly, produce the unit c that unit b, combination platypelloid type battery 60D that unit a as shown in figure 23, that combination platypelloid type battery 60A and 60B form, combination platypelloid type battery 60C, 60A and 60B form and 60C form in advance and amount to 3 unit.Certainly, when making these unit, between the electrode corbel back slab of needs insulation insulant is set, this is identical with execution mode 1～3.
When making each unit, the electrode corbel back slab that ∨ point shown in Figure 23 connects is bonded with each other with ultrasonic wave jointing machine 200 shown in Figure 2.The concrete grammar of this joint is identical with above-mentioned execution mode 1～3, so omit its detailed explanation.When making each unit, can engage, so it is easy to engage operation in diverse position.
Then, as shown in figure 23, unit a is bonded with each other with the electrode corbel back slab that is connected with solid line of position platypelloid type battery 60A thereon, then, the electrode corbel back slab that is connected with solid line that will be positioned at the undermost platypelloid type battery of unit a 60B and the platypelloid type battery 60C that is positioned at the unit b the superiors is bonded with each other, at last, the electrode corbel back slab that is connected with solid line that will be positioned at the undermost platypelloid type battery of unit b 60B and the platypelloid type battery 60D that is positioned at the unit c the superiors is bonded with each other.When carrying out these joints, between the electrode corbel back slab of needs insulation insulant is set, this is identical with execution mode 1～3.As above like that the unit is bonded with each other, the protuberance that then becomes the electrode corbel back slab that engages object is positioned at the position that not hindered by other parts, so it is easy to engage operation.
As mentioned above, the battery pack of present embodiment, production unit a, b, c, then platypelloid type battery 60A and unit a are engaged, then unit a and unit b are engaged, further unit b and unit c are engaged and form battery pack, because the joint of each unit can carry out in the position that not hindered by other electrode corbel back slabs, so it is easy to engage operation.Therefore, increased the degree of freedom of the nose shape of ultrasonic wave jointing machine, the automation transfiguration that engages operation is easy.In addition, use ultrasonic wave to engage, do not have the mechanical engagement part, thus can not produce contact resistance uneven or because of vibration cause lax, thereby can keep sufficient reliability aspect durable reliability, the maintenance.
Execution mode 5
The battery pack of present embodiment is to form along 6 kinds of platypelloid type batteries that stacked 8 the different electrode corbel back slabs of length that have as shown in figure 24 of cell thickness direction make up with the combination of stipulating.The length of the electrode corbel back slab of drawing from the both sides of platypelloid type battery has fixing length in each stacked position, so that its bonding station is positioned at different positions in order with 8 platypelloid type battery engagement the time.By the electrode corbel back slab of platypelloid type battery being engaged it is electrically connected with as shown in Figure 2 ultrasonic wave jointing machine 200.The electrode corbel back slab of battery pack is divided into 3 kinds of length, so that in the process of forming battery pack, can engage in order to long electrode corbel back slab from short electrode corbel back slab.The state that battery pack is finished in assembling, 8 platypelloid type batteries all are connected in series.
In addition, in the present embodiment, carry the method, the interconnective method of battery pack is identical with execution mode 2 of completed battery pack on the vehicle, so omit its explanation.
Below, the manufacture method of the battery pack of present embodiment is described.
The battery pack of present embodiment for the bonding station branch that makes the electrode corbel back slab in 3 positions of length direction, the combination of length of electrode corbel back slab that makes each platypelloid type battery is corresponding to stacked position and difference.Figure 24 represents for the kind of the necessary platypelloid type battery of the battery pack that constitutes present embodiment (the length difference of electrode corbel back slab).Form though battery pack is stacked 8 platypelloid type batteries, in the present embodiment, for the bonding station branch that makes the electrode corbel back slab in 3 positions of length direction, used 6 kinds of different platypelloid type batteries of length combination as shown in the figure.
The platypelloid type battery 70A of A type, make-lateral electrode corbel back slab 71A and+length of lateral electrode corbel back slab 72A and the platypelloid type battery of its alloytype are in a ratio of the shortest.The platypelloid type battery 70B of Type B have with the A type-lateral electrode corbel back slab 71A equal length-lateral electrode corbel back slab 71B, and have than A type+length of lateral electrode corbel back slab 72A long+lateral electrode corbel back slab 72B.The platypelloid type battery 70C of C type have with Type B+lateral electrode corbel back slab 72B equal length-lateral electrode corbel back slab 71C, and have with Type B-lateral electrode corbel back slab 71B equal length+lateral electrode corbel back slab 72C.The D type-length of lateral electrode corbel back slab 71D and+lateral electrode corbel back slab 72D and Type B+72B is identical for the lateral electrode corbel back slab.The E type-lateral electrode corbel back slab 71E have with Type B+length that lateral electrode corbel back slab 72B is identical, the length of the electrode corbel back slab of the length of+lateral electrode corbel back slab 72E and the platypelloid type battery of its alloytype is in a ratio of the longest.The platypelloid type battery 70F of F type have with the E type+lateral electrode corbel back slab 72E equal length-the electrode corbel back slab 71F of side, and have with Type B+lateral electrode corbel back slab 72B equal length+lateral electrode corbel back slab 72F.
When making the battery pack of present embodiment, arrange platypelloid type battery and like that it is stacked as shown in figure 26 as shown in figure 25 like that.Specifically, to orlop, undertaken stacked from the superiors by the order of platypelloid type battery 70A shown in Figure 24,70C, 70D, 70F, 70E, 70C, 70B, 70A.
Before stacked, the platypelloid type battery shown in the dotted line of Figure 25 is made up mutually, by ultrasonic wave engage will regulation the electrode corbel back slab be bonded with each other and produce unit (Unit the 1st).That is, make in advance as shown in figure 25, combination has the platypelloid type battery 70A of the shortest electrode corbel back slab and unit a that 70C forms, unit b that combination platypelloid type battery 70B, 70A form this amounts to 2 unit.
When making each unit, Figure 25 is bonded with each other with the electrode corbel back slab that the dotted line shown in Figure 26 (left side) is connected with ultrasonic wave jointing machine 200 shown in Figure 2.For example in Figure 25, when making the unit a that combination platypelloid type battery 70A, 70C form, with platypelloid type battery 70A-lateral electrode corbel back slab 71A and platypelloid type battery 70C+lateral electrode corbel back slab 72C engages.In addition, when making the unit b that combination platypelloid type battery 70B, 70A form, with platypelloid type battery 70B-lateral electrode corbel back slab 71B and platypelloid type battery 70A+lateral electrode corbel back slab 72A engages.Just engage by above order and can engage operation easily.
When making these each unit, the insulant 40 as insulating element of regulation shape is set between electrode corbel back slab 72A and electrode corbel back slab 71C so that be positioned at upside platypelloid type battery 70A+lateral electrode corbel back slab 72A not with the platypelloid type battery 70C that is positioned at its downside-lateral electrode corbel back slab 71C is electrically connected.Insulant 40 can be the parts of sheet, also can be to paste insulating tape at the lower surface (direction as shown) of electrode corbel back slab 72A.The insulant 40 of regulation shape also is set between the electrode corbel back slab 72B of the platypelloid type battery 70B of formation unit b and the electrode corbel back slab 71A of platypelloid type battery 70A.
Then, as Figure 25 and shown in Figure 26, engage platypelloid type battery 70D, engage platypelloid type battery 70C and production unit α and unit β (Unit the 2nd) at unit b at unit a.As shown in the figure, engaging between the unit a that is used for production unit α and the platypelloid type battery 70D is to engage with the electrode corbel back slab 72D of platypelloid type battery 70D by the electrode corbel back slab 71C that will be positioned at the undermost platypelloid type battery of unit a 70C to carry out.Certainly, when carrying out engaging between unit a and the platypelloid type battery 70D, insulant 40 is set between the electrode corbel back slab for fear of being electrically connected between the electrode corbel back slab (72C, 71D) of a side that does not engage.When as above carrying out engaging between unit a and the platypelloid type battery 70D like that, then since platypelloid type battery 70A+length of lateral electrode corbel back slab 72A than platypelloid type battery 70C-length of lateral electrode corbel back slab 71C is short, so can not touch electrode corbel back slab 72A, can carry out engaging between electrode corbel back slab 71C and the electrode corbel back slab 72D.In addition, based on same reason, also can not be subjected to other electrode corbel back slabs (71A) not constitute engaging between the electrode corbel back slab 71C of electrode corbel back slab 72B and platypelloid type battery 70C of platypelloid type battery 70B of unit b fully with hindering.
Then, engage platypelloid type battery 70F, engage platypelloid type battery 70E and production unit X and unit Y (Unit the 3rd) at unit α at unit β.As shown in the figure, be used for production unit X, engaging between unit α and the platypelloid type battery 70F be that electrode corbel back slab 71D by the undermost platypelloid type battery 70D that will be positioned at unit α engages with the electrode corbel back slab 71F of platypelloid type battery 70F and carries out.Certainly, when carrying out the engaging of unit α and platypelloid type battery 70F, be electrically connected between the electrode corbel back slab (72D, 71F) for the side that prevents from not carry out engaging, insulant 40 is set between the electrode corbel back slab.When carrying out the engaging of unit α and platypelloid type battery 70F as described above, then since the length of electrode corbel back slab 71D and electrode corbel back slab 72F greater than the length of electrode corbel back slab 71A, 72C, so can not contact, just can carry out engaging between electrode corbel back slab 71D and the electrode corbel back slab 72F with electrode corbel back slab 71A, the electrode corbel back slab 72C of platypelloid type battery 70C of the platypelloid type battery 70A that constitutes unit α.In addition, based on same reason, also can not be subjected to other electrode corbel back slabs (71B, 72A) not constitute the engaging of electrode corbel back slab 71E of electrode corbel back slab 72C and platypelloid type battery 70E of the platypelloid type battery 70C of unit β fully with hindering.
At last, joint unit X and unit Y and make the battery pack of present embodiment.As shown in figure 26, unit X and engaging of unit Y are that electrode corbel back slab 72E by electrode corbel back slab 71F that will be positioned at the undermost platypelloid type battery of unit X 70F and the platypelloid type battery 70E that is positioned at the unit Y the superiors engages and carries out.The length of electrode corbel back slab 70F and electrode corbel back slab 70E is greater than the length of other any electrode corbel back slabs, so its joint is not carried out by other electrode corbel back slabs can with hindering, it is easy that it engages operation.
As mentioned above, the battery pack of present embodiment, production unit a, b, production unit α, β then, follow production unit X, Y, form battery pack by joint unit X and Y at last, because the joint of each unit can carry out in the position that not hindered by other electrode corbel back slabs, so it is easy to engage operation.Therefore, the degree of freedom that has increased the nose shape of ultrasonic wave jointing machine increases, and the automation transfiguration that engages operation is easy.In addition, use ultrasonic wave to engage, do not have the mechanical engagement part, thus can not produce contact resistance uneven or because of vibration cause lax, thereby can have sufficient reliability aspect durable reliability, the maintenance.
Execution mode 6
The battery pack of present embodiment is to form along 3 kinds of platypelloid type batteries that stacked 8 the different electrode corbel back slabs of length that have as shown in figure 27 of cell thickness direction make up with the combination of stipulating.The shape of the electrode corbel back slab of drawing from the both sides of platypelloid type battery has fixed shape in each stacked position, so that its bonding station is positioned at different positions in order with 8 platypelloid type battery engagement the time.The electrode corbel back slab that engages the platypelloid type batteries by the ultrasonic wave jointing machine of using as shown in Figure 2 200 makes its electrical connection.The electrode corbel back slab of battery pack is divided into 2 kinds of length, so that can engage in order to long electrode corbel back slab from short electrode corbel back slab in the process of forming battery pack.The state that battery pack is finished in assembling, 8 platypelloid type batteries all are connected in series.
In addition, in the present embodiment, carry the method, the interconnective method of battery pack is identical with execution mode 2 of completed battery pack on the vehicle, so omit its explanation.
The following describes the manufacture method of the battery pack of present embodiment.
For the bonding station with the electrode corbel back slab is divided into 2 positions of length direction, the combination of electrode corbel back slab length that the battery pack of present embodiment makes each platypelloid type battery is corresponding to stacked position and difference.Figure 27 represents for the kind that constitutes the necessary platypelloid type battery of present embodiment battery pack (the length difference of electrode corbel back slab).Though stacked 8 the platypelloid type batteries of battery pack form, in the present embodiment,, 3 kinds of different platypelloid type batteries of length combination have as shown in the figure been used for the bonding station with the electrode corbel back slab is divided into 2 positions of length direction.
The platypelloid type battery 80A of A type, its-lateral electrode corbel back slab 81A and+length of lateral electrode corbel back slab 82A and the platypelloid type battery of its alloytype are in a ratio of the shortest.The platypelloid type battery 80B of Type B have with the A type+lateral electrode corbel back slab 82A equal length-lateral electrode corbel back slab 81B, and have than A type+lateral electrode corbel back slab 81A and-length of lateral electrode corbel back slab 82A long+lateral electrode corbel back slab 82B.The platypelloid type battery 80C of C type have with Type B+lateral electrode corbel back slab 82B equal length-lateral electrode corbel back slab 81C, and have with Type B-lateral electrode corbel back slab 81B equal length+lateral electrode corbel back slab 82C.
When making the battery pack of present embodiment, arrange as shown in figure 28 and stacked platypelloid type battery like that.Specifically, come stacked to orlop by the order of platypelloid type battery 80A shown in Figure 27,80B, 80C, 80A, 80A, 80B, 80C, 80A from the superiors.
Before stacked, the platypelloid type battery with shown in the solid line of Figure 28 is made up mutually, with ultrasonic wave engage will regulation the electrode corbel back slab be bonded with each other and produce unit (Unit the 1st).Promptly, shown in the step 1 of Figure 28, make unit d that unit c, combination platypelloid type battery 80C that unit a that combination platypelloid type battery 80A and 80B form, unit b, combination platypelloid type battery 80A that combination platypelloid type battery 80C, 80A form and 80B form and 80A form this amounts to 4 unit in advance.
When making each unit, the electrode corbel back slab that the solid line shown in Figure 28 (left side) connects is bonded with each other with ultrasonic wave jointing machine 200 shown in Figure 2.For example in Figure 28, when making unit a that combination platypelloid type battery 80A and 80C form and unit c, engage platypelloid type battery 80A+lateral electrode corbel back slab 82A and platypelloid type battery 80B-lateral electrode corbel back slab 81B.In addition, when making unit b that combination platypelloid type battery 80C and 80A form and d, engage platypelloid type battery 80C+lateral electrode corbel back slab 82C and platypelloid type battery 80A-lateral electrode corbel back slab 81A.Though diagram not when making each unit, is provided with insulant at the electrode corbel back slab of a side that does not engage.
Then, shown in the step 2 of Figure 28, distinguish linkage unit a and unit b, unit c and unit d and production unit e, unit f.As shown in the figure, unit a and unit b engage and unit c and engaging of unit d are that the electrode corbel back slab 82B of the platypelloid type battery 80B by will being positioned at unit a, c lower floor engages with the electrode corbel back slab 81C of the platypelloid type battery 80C that is positioned at unit b, d upper strata and carries out.In being bonded with each other of these unit, not shown insulant is set between the electrode corbel back slab for fear of being electrically connected between the electrode corbel back slab of a side that does not engage.As mentioned above, when carrying out the engaging of unit a and b or unit c and d, then since platypelloid type battery 80B+lateral electrode corbel back slab 82B and platypelloid type battery 80C-length of lateral electrode corbel back slab 81C greater than platypelloid type battery 80A-length of lateral electrode corbel back slab 81A, can carry out engaging between electrode corbel back slab 82B and the electrode corbel back slab 81C so can not contact with electrode corbel back slab 81A.
At last, joint unit e and unit f and make the battery pack of present embodiment.
As shown in figure 28, the joint of unit e and unit f is to engage with the electrode corbel back slab 81A that is positioned at the platypelloid type battery 80A of the unit f the superiors by the electrode corbel back slab 82A that will be positioned at the undermost platypelloid type battery of unit e 80A to carry out.
As mentioned above, the battery pack of present embodiment, production unit a, b, c, d, production unit e, f then, last joint unit e and f, thereby the formation battery pack can carried out on the position that not hindered by other electrode corbel back slabs up to the joint till joint unit e and the f, so it is easy to engage operation.
Execution mode 7
The battery pack of present embodiment is to form along stacked 8 the platypelloid type batteries with 7 kinds of electrode corbel back slab shapes shown in Figure 29 of cell thickness direction with the combination of stipulating.The shape of the electrode corbel back slab of drawing from platypelloid type battery both sides has the solid shape that has changed its length and shape in each stacked position, so that when engaging 8 platypelloid type batteries in order, its bonding station is positioned at different positions.Make its electrical connection by the electrode corbel back slab that engages the platypelloid type battery with ultrasonic wave jointing machine shown in Figure 2 200.The state that the electrode corbel back slab of battery pack is finished in assembling, its ledge are divided into 2 directions.The state that battery pack is finished in assembling, 8 platypelloid type batteries all are connected in series.
In addition, in the present embodiment, carry the method, the interconnective method of battery pack is identical with execution mode 2 of completed battery pack on the vehicle, so omit its explanation.
The following describes the manufacture method of the battery pack of present embodiment.
The battery pack of present embodiment, not overlapping for the bonding station that makes the electrode corbel back slab, the bonding station of electrode corbel back slab is divided into 2 directions, and makes the length direction difference of the bonding station of electrode corbel back slab at battery.For this reason, the shape of the electrode corbel back slab of each platypelloid type battery and length are corresponding to stacked position and different.Figure 29 represents for the kind that constitutes the necessary platypelloid type battery of present embodiment battery pack (the shape difference of electrode corbel back slab).Form though battery pack is stacked 8 platypelloid type batteries, in the present embodiment,, use the platypelloid type battery of electrode corbel back slab with 7 kinds of shapes as shown in the figure for the bonding station that makes the electrode corbel back slab is dispersed in 4 places.
The platypelloid type battery 90A of A type ,-lateral electrode corbel back slab 91A and+length of lateral electrode corbel back slab 92A and the platypelloid type battery of its alloytype are in a ratio of the shortest.The platypelloid type battery 90B of Type B, have with the A type-lateral electrode corbel back slab 91A equal length-lateral electrode corbel back slab 91B, and have than A type+length of lateral electrode corbel back slab 92A long+lateral electrode corbel back slab 92B.The platypelloid type battery 90C of C type, have with Type B+lateral electrode corbel back slab 92B equal length-lateral electrode corbel back slab 91C and+lateral electrode corbel back slab 92C, but+part of lateral electrode corbel back slab 92C is cut and form protuberance 94C.D type platypelloid type battery 90D, have with Type B+lateral electrode corbel back slab 92B equal length-lateral electrode corbel back slab 91D and with Type B-lateral electrode corbel back slab 91B equal length+lateral electrode corbel back slab 92D, but-part of lateral electrode corbel back slab 91D is cut and form protuberance 93D.The platypelloid type battery 90E of E type, have with Type B+lateral electrode corbel back slab 92B equal length+lateral electrode corbel back slab 92E and with Type B-lateral electrode corbel back slab 91B equal length-the electrode corbel back slab 91E of side, but+part of lateral electrode corbel back slab 92E is cut and form protuberance 94E.F type platypelloid type battery 90F, have with Type B+lateral electrode corbel back slab 92B equal length-lateral electrode corbel back slab 91F and+lateral electrode corbel back slab 92F, but-part of lateral electrode corbel back slab 91F is cut and form protuberance 93F.The platypelloid type battery 90G of G type have with the A type-lateral electrode corbel back slab 91A equal length+lateral electrode corbel back slab 91G, also have with Type B+lateral electrode corbel back slab 92B equal length-lateral electrode corbel back slab 91G.
When making the battery pack of present embodiment, arrange platypelloid type battery and like that it is stacked as shown in figure 31 as shown in figure 30 like that.Specifically, come stacked to orlop by the order of platypelloid type battery 90A shown in Figure 17,90G, 90F, 90E, 90D, 90C, 90B, 90A from the superiors.
Before stacked, the platypelloid type battery shown in the dotted line of Figure 30 is made up mutually, engage the electrode corbel back slab that will stipulate with ultrasonic wave and be bonded with each other and produce the unit.That is, produce unit c that unit b, combination platypelloid type battery 90C, 90B and 90A that unit a, combination platypelloid type battery 90E as shown in figure 30, that combination platypelloid type battery 90A, 90G and 90F form and 90D form form this amounts to 3 unit in advance.
When making each unit, will be bonded with each other with the electrode corbel back slab that the dotted line shown in Figure 31 (left side) is connected with Figure 30 with ultrasonic wave jointing machine 200 shown in Figure 2.For example in Figure 30, when making the unit a that combination platypelloid type battery 90A, 90G and 90F form, at first engage the platypelloid type battery 90F that is positioned at the lower side+lateral electrode corbel back slab 92F and position platypelloid type battery 90G thereon-lateral electrode corbel back slab 91G.Then, engage be positioned at platypelloid type battery 90G+lateral electrode corbel back slab 92G and position platypelloid type battery 90A thereon-lateral electrode corbel back slab 91A.In addition, during production unit B, engage platypelloid type battery 90D+lateral electrode corbel back slab 92D and position platypelloid type battery 90E thereon-lateral electrode corbel back slab 91E.And during production unit C, engage the platypelloid type battery 90A that is positioned at the lower side+lateral electrode corbel back slab 92A and position platypelloid type battery 90B thereon-lateral electrode corbel back slab 91B.Then, engage platypelloid type battery 90B+lateral electrode corbel back slab 92B and position platypelloid type battery 90C thereon-lateral electrode corbel back slab 91C.Engage by above order, not the electrode corbel back slab that is bonded with each other is engaged by other electrode corbel back slabs with hindering, so it is easy to engage operation.When making each unit, as shown in the figure, between the electrode corbel back slab of a side that does not engage, insulant 40 is set.Insulant 40 can be the parts of sheet, also can be to paste insulating tape at the lower surface (direction as shown) of electrode corbel back slab.
Then, as shown in figure 31, joint unit a, b, c make the battery pack of present embodiment.The joint of unit a and unit b by will being positioned at the undermost platypelloid type battery 90F of unit a-lateral electrode corbel back slab 91F protuberance 93F and be positioned at unit b upside platypelloid type battery 90E+the protuberance 94E of lateral electrode corbel back slab 92E engages and carries out, in addition, the joint of unit b and unit c be by will being positioned at unit b downside platypelloid type battery 90D-the protuberance 93D of lateral electrode corbel back slab 91D and be positioned at the unit c the superiors platypelloid type battery 90C+the protuberance 94C of lateral electrode corbel back slab 92C engages and carries out.Certainly, when carrying out the joint of these unit, as shown in the figure, between the electrode corbel back slab of a side that is not carried out joint, insulant 40 is set.As above carry out the joint of unit a, b, c like that, the protuberance 93F of the electrode corbel back slab 91F that then is bonded with each other and the protuberance 94E of electrode corbel back slab 92E are more outstanding than electrode corbel back slab 91A, 92G, and the protuberance 93D of the electrode corbel back slab 91D that is bonded with each other and the protuberance 94C of electrode corbel back slab 92C are more outstanding than electrode corbel back slab 91B, 92A, and the bonding station of protuberance 93F and protuberance 94E is different with the bonding station of protuberance 93D and protuberance 94D, so the electrode corbel back slab that not will engage by other electrode corbel back slabs engages with hindering.
As mentioned above, the battery pack of present embodiment, production unit a, b, c engage these unit and form battery pack then, and the joint of each unit can carry out on the position that not hindered by other electrode corbel back slabs, so the joint operation is easy.Therefore, increased the degree of freedom of the nose shape of ultrasonic wave jointing machine, the automation transfiguration that engages operation is easy.In addition, use ultrasonic wave to engage, do not have the mechanical engagement part, thus can not produce contact resistance uneven or because of vibration cause lax, thereby can keep sufficient reliability aspect durable reliability, the maintenance.
Execution mode 8
The battery pack of present embodiment is to form with stacked 8 the 6 kinds of different platypelloid type batteries of stipulating of extraction location shown in figure 32, the electrode corbel back slab of cell thickness direction that are combined in.The extraction location difference of the electrode corbel back slab of drawing from the platypelloid type battery is so that its bonding station is positioned at different positions when engaging 8 platypelloid type batteries in order.Make its electrical connection by the electrode corbel back slab of platypelloid type battery being engaged with as shown in Figure 2 ultrasonic wave jointing machine 200.The state that the electrode corbel back slab of battery pack is finished in assembling, its ledge are divided to 4 directions.The state that battery pack is finished in assembling, 8 platypelloid type batteries all are connected in series.
In addition, carry the method, the interconnective method of battery pack is identical with execution mode 2 of completed battery pack on the vehicle, so omit its explanation.
Below, the manufacture method of the battery pack of present embodiment is described.
For the bonding station of electrode corbel back slab is divided to 4 directions, the extraction location of electrode corbel back slab that the battery pack of present embodiment makes each platypelloid type battery is corresponding to stacked position and difference.Figure 32 represents for the kind of the necessary platypelloid type battery of the battery pack that constitutes present embodiment (the extraction location difference of electrode corbel back slab).Though stacked 8 platypelloid type batteries and constitute battery pack in the present embodiment, for the bonding station with the electrode corbel back slab divides to 4 directions, use the platypelloid type battery of the electrode corbel back slab with 6 kinds of such extraction locations of diagram.
Platypelloid type battery 95A and 95H, its-lateral electrode corbel back slab 97A, 97H and+lateral electrode corbel back slab 96A, 96H draw from the both sides of platypelloid type battery 95A and 95H. Platypelloid type battery 95B, 95C, 95F and 95G, its-lateral electrode corbel back slab 97B, 97C, 97F, 97G and+lateral electrode corbel back slab 96B, 96C, 96F, 96G be adjacent to derivative. Platypelloid type battery 95D and 95E, its-electrode corbel back slab 97D, 97E and+ side 96D, 96E are that to separate certain intervals ground derivative.
When making the battery pack of present embodiment, at first, engage platypelloid type battery 95A+lateral electrode corbel back slab 96A and platypelloid type battery 95B-lateral electrode corbel back slab 97B and production unit a, engage its platypelloid type battery 95C+lateral electrode corbel back slab 96C and platypelloid type battery 95D-lateral electrode corbel back slab 97D and production unit b, engage platypelloid type battery 95E+lateral electrode corbel back slab 96E and platypelloid type battery 95F-lateral electrode draws 97F and production unit c, engage platypelloid type battery 95G+lateral electrode corbel back slab 96G and platypelloid type battery 95H-lateral electrode corbel back slab 97H and production unit d.When making each unit, can engage, so it is easy to engage operation in diverse position.
Then, lamination unit a, b, engage platypelloid type battery 95B+lateral electrode corbel back slab 96B and platypelloid type battery 95C-lateral electrode corbel back slab 97C.At this moment, platypelloid type battery 95B-lateral electrode corbel back slab 97B and platypelloid type battery 95C+insulant is set between the lateral electrode corbel back slab 96C.Equally, lamination unit c, d, engage platypelloid type battery 95F+lateral electrode corbel back slab 96F and platypelloid type battery 95G-lateral electrode corbel back slab 97G.At this moment, platypelloid type battery 95F-lateral electrode corbel back slab 97F and platypelloid type battery 95G+insulant is set between the lateral electrode corbel back slab 96G.
At last, engage platypelloid type battery 95D+lateral electrode corbel back slab 96D and platypelloid type battery 95E-lateral electrode corbel back slab 97E, lamination unit a～d.At this moment, platypelloid type battery 95C-lateral electrode corbel back slab 97C and platypelloid type battery 95F+insulant is set between the lateral electrode corbel back slab 96F.In addition, when carrying out these joint, the situation that insulant is set between the electrode corbel back slab of needs insulation is identical with execution mode 1～3.As above carry out being bonded with each other of unit like that, the protuberance that then becomes the electrode corbel back slab that engages object is positioned at the position that not hindered by other parts, so it is easy to engage operation.
As above, the battery pack of present embodiment, production unit a, b, c, d, joint unit a and unit b then, unit c and unit d rejoin, engage all unit at last and form battery pack, because the joint of each unit is to carry out on the position that not hindered by other electrode corbel back slabs, so it is easy to engage operation.Therefore, increased the degree of freedom of the nose shape of ultrasonic wave jointing machine, the automation transfiguration that engages operation is easy.In addition, use ultrasonic wave to engage, do not have the mechanical engagement part, thus can not produce contact resistance uneven or because of vibration cause lax, thereby, can keep sufficient reliability aspect durable reliability, the maintenance.
Execution mode 9
The battery pack of present embodiment with+lateral electrode corbel back slab and-the connected mode of lateral electrode corbel back slab along the cell thickness direction stacked 16 as shown in figure 33, have that round-shaped platypelloid type battery with the electrode corbel back slab of regulation central angle configuration forms.
As shown in the figure, the platypelloid type battery 400 of present embodiment, round-shaped from being shaped as of seeing of stacked direction, + lateral electrode corbel back slab 410A have with respect to-lateral electrode corbel back slab 410B 157.5 ° central angle be configured, make this+lateral electrode corbel back slab 410A is from being the diameter offset of basic point with electrode corbel back slab 410B.Platypelloid type battery 400 with electrode corbel back slab of so mutual offset position relation, along stacked direction overlapping stacked its+the lateral electrode corbel back slab and-the lateral electrode corbel back slab.The configuration status of the electrode corbel back slab when Figure 34 has represented 3 platypelloid type batteries 400 stacked.Platypelloid type battery 400 under being positioned at +lateral electrode corbel back slab 410A, overlapping stacked platypelloid type battery 400 thereon-lateral electrode corbel back slab 410D; Platypelloid type battery 400 after stacked+on the lateral electrode corbel back slab 410C overlapping stacked platypelloid type battery 400 thereon-lateral electrode corbel back slab 410F.When so stacked 16 platypelloid type batteries 400, the electrode corbel back slab is outstanding from 16 equational splits of platypelloid type battery 400 peripheral parts.At this state, will engage except the electrode corbel back slab at 14 places the electrode corbel back slab at 2 places that are used for extraction voltage with ultrasonic wave jointing machine 200 shown in Figure 2.When engaging, battery is rotated, Yi Bian carry out the location of the electrode corbel back slab of joining tool and battery peripheral direction,, carry out in groups electrode corbel back slab is bonded with each other Yi Bian carry out the location of the above-below direction of joining tool.Thus, all platypelloid type batteries 400 are connected in series.
In the present embodiment, the battery pack that stacked again multilayer (for example 6 layers) forms like this and as battery assembly module 450 is with clamping this unit as Figure 35 and the shell 420A, the 420B that split shown in Figure 36 from both sides and being fixed.Engaged electrode corbel back slab 410 is outstanding from the peripheral part of battery assembly module 450, but the connector 430 of the corresponding quantity in corresponding with this electrode corbel back slab together position is installed at 420A, 420B, when being installed to shell 420A, 420B on the battery assembly module 450, all electrode corbel back slabs 410 embed this connector.In addition, connector is provided with for the voltage detecting of each platypelloid type battery 400, is connected with holding wire 435 on all connectors, can go out the voltage of each platypelloid type battery from external detection.So, when on shell 420A, 420B, connector 430 being installed, then do not need to be used to carry out the wiring operation of the holding wire of voltage detecting, can improve assembling operation efficient significantly.
And, as Figure 37, shown in Figure 38, being useful on the screw thread 465 that installation adds gland 460 in the cutting of the top of shell 420A, 420B, this adds the surface pressing that gland 460 is used for all platypelloid type batteries 400 are applied stacked direction.As shown in figure 36, battery assembly module 450 is housed among shell 420A, the 420B, as shown in figure 38, makes the incompatible installation of joining of the screw thread that adds gland 460 and screw thread 465 add gland 460.Rotation adds gland 460 tightens it, and then such as shown in the figure platypelloid type battery 400 is applied in the surface pressing of stacked direction.Apply surface pressing like this, can prolong the life-span of battery assembly module 450.This be because: when using platypelloid type battery 400, along with the variation in elapsed time within it portion produce gas, but, just the gas of this generation can be arrived in the peripheral part of platypelloid type battery 400 if apply surface pressing.As surface pressing 0.15Kgf/cm preferably 2About pressure.Thereby, in the present embodiment, be about 120Kgf by adding the surface pressing that gland 460 applies.
Then, circulate in battery assembly module 450, install as Figure 39 and cooling shell 480 shown in Figure 40 in order to make cooling air.Though not explanation above when forming battery assembly module 450, when layer-built battery group and battery pack, is provided with cooling dividing plate 470 between it.Dividing plate 470 form many make air within it portion to the through hole of a direction circulation.In addition, as shown in the figure, be formed with air intake 485 and air outlet 490 at cooling shell 480.Figure 40 (A) is the A-A cutaway view of Figure 39 of the position relation between expression cooling shell 480 and the platypelloid type battery 400, and Figure 40 (B) is the B-B cutaway view of Figure 39 of the position relation between expression cooling shell 480 and the dividing plate 470.Air intake 485 and air outlet 490 are respectively formed at the position shown in Figure 40 (B).Thereby, as shown in figure 39, battery assembly module 450 being inserted in the cooling shell 480, and carrying air to air intake 485, the air that then is transferred reaches air outlet 490 by the through hole of each dividing plate 470.Because two surfaces of dividing plate 470 are directly closely connected at platypelloid type battery 400, come cooling flat type battery by the air that supplies to cooling shell 480.
Figure 41 is the cutaway view of the battery of present embodiment.
As shown in the figure, contain the battery assembly module 450 that is contained in the shell 420 in cooling shell 480 inside.Battery assembly module 450 is provided with 5 dividing plates and stacked formation between 6 battery pack.The connector that is installed on the shell 420 is aimed at when mounted automatically with the electrode corbel back slab of giving prominence to from the battery pack peripheral part.Be equipped with at shell 420 and add gland 460, the platypelloid type battery that constitutes battery pack at stacked direction by with suitable exert pressure.Be formed with air intake 485 and air outlet 490 at cooling shell 480, as shown in the figure, discharge from air outlet 490 by all dividing plates 470 from the air that air intake 485 is supplied with.
The battery of this spline structure for example is equipped on vehicle, carries the method, the interconnective method of battery pack is identical with execution mode 2 of this battery on the vehicle, so omit its explanation
In addition, in the present embodiment, be that circle is that example is represented with the shape of platypelloid type battery, but certainly use polygonal platypelloid type batteries such as pentagon or hexagon.Self-evident, under polygonal situation, do not establish the electrode corbel back slab, and as present embodiment, make one-sided electrode corbel back slab biasing on relative limit.
Execution mode 10
Figure 42 is the outside drawing of the execution mode 10 of battery pack of the present invention.
The battery pack 500 of present embodiment is so that the mode of the alternating polarity of electrode corbel back slab forms along stacked 8 the platypelloid type batteries of cell thickness direction, is to form by the folding a series of battery that a plurality of platypelloid type batteries are connected into sheet.The battery pack 500 of present embodiment has such structure: when stacked all platypelloid type batteries, the electrode corbel back slab that is used for that the platypelloid type battery is connected in series mutually is in a plurality of positions of battery pack, by the electrode corbel back slab that engages separately all platypelloid type batteries is electrically connected in series.Specifically, as shown in figure 43, it is rectangle that the platypelloid type battery is overlooked when seeing, the junction surface of electrode corbel back slab is configured to: after a succession of battery (and 8 platypelloid type batteries that be connected continuous with the battery that is adjacent by the limit that does not have the electrode corbel back slab constitute) of sheet was folded end, the junction surface of electrode corbel back slab was in the mutual staggered positions of the Width of platypelloid type battery.Therefore, the extraction location of the electrode corbel back slab of drawing from the both sides of each platypelloid type battery of forming the sheet battery is each stacked position difference at it, so that each electrode corbel back slab is in groups divided to 4 directions during stacked 8 platypelloid type batteries.In the present embodiment,, use 8 kinds of platypelloid type batteries from diverse location extraction electrode corbel back slab for the bonding station that makes the electrode corbel back slab is divided into 4 directions.
The electrode corbel back slab of platypelloid type battery is engaged and make its electrical connection with ultrasonic wave jointing machine 200 shown in Figure 2.At the state of stacked end, as shown in figure 42, its outstanding part of the electrode corbel back slab of battery pack is divided to 4 directions.The state that battery pack is finished in assembling, 8 platypelloid type batteries all are connected in series.
In the battery pack of present embodiment, the electricity that can be separately carries out all the platypelloid type batteries after stacked along unduplicated 4 positions of stacked direction engages, so can directly engage all platypelloid type batteries under stacked state, not only operation is good, and the automation of joint operation is easy.And, can not apply unnecessary stress to the electrode corbel back slab that has engaged yet, and the mechanical engagement part of bolt and nut of no use, packing ring etc., so good aspect durable reliability, maintainability.
In addition, in the present embodiment, carry the method, the interconnective method of battery pack is identical with execution mode 2 of completed battery pack on the vehicle, so omit its explanation.
Below, the manufacture method of the battery pack of present embodiment is described.
As top diagrammatic illustration, as shown in figure 42, the platypelloid type battery of the sheet of present embodiment is that it does not have the limit of electrode corbel back slab continuous and connected successively with the battery that is adjacent, and each battery is from different position extraction electrode corbel back slabs.As shown in the figure, on accompanying drawing, draw+electrode corbel back slab 512A, draw-electrode corbel back slab 514A from its bottom righthand side from the left upper end of platypelloid type battery 510A.Draw+electrode corbel back slab 521B from the lower-left end of platypelloid type battery 510B, draw-electrode corbel back slab 514B from the position of an offset electrodes corbel back slab width to the inside+α amount in its upper left side.From the upside of platypelloid type battery 510C and 510G and downside draw respectively from the position that only has been offset electrode corbel back slab width+α amount to the inside+electrode corbel back slab 512C, 512G and-electrode corbel back slab 514C, 514G.Upside at platypelloid type battery 510D is drawn from its center-electrode corbel back slab 514D, draws+electrode corbel back slab 512D from the position that only has been offset electrode corbel back slab width+α amount to the inside at downside.Draw from the center of the upside of platypelloid type battery 510E and downside+electrode corbel back slab 512E and-electrode corbel back slab 514E.At the downside of platypelloid type battery 510F, draw from its center+electrode corbel back slab 512F, at upside, draw-electrode corbel back slab 514F from the position of an offset electrodes corbel back slab width to the inside+α amount.Draw-electrode corbel back slab 514H from the left upper end of platypelloid type battery 510H,, draw+electrode corbel back slab 514H from the position that only has been offset electrode corbel back slab width+α amount to the inside in its lower right side.
The battery that to draw the electrode corbel back slab shown in Figure 44 (a) like that from above position is folded into zigzag, then as shown in figure 42, each platypelloid type battery+electrode corbel back slab and-electrode corbel back slab be at different location overlaps.Specifically, electrode corbel back slab 514A and 512B are overlapping in groups, electrode corbel back slab 514C and 512D are overlapping in groups, electrode corbel back slab 514E and 512F are overlapping in groups, electrode corbel back slab 512G and 512H are overlapping in groups, electrode corbel back slab 514B and 512C are overlapping in groups, and electrode corbel back slab 514D and 512E are overlapping in groups, and electrode corbel back slab 514F and 512G are overlapping in groups.
At this state, in groups+and-the electrode corbel back slab also be not engaged, so will be as shown in figure 42 like that the battery of overlap condition take ultrasonic wave jointing machine 200 to, engage electrode corbel back slab in groups in order.
When as above forming battery pack like that, then the joint of each electrode corbel back slab can be to carry out on the position that not hindered by other electrode corbel back slabs, so it is easy to engage operation.Therefore, increased the nose shape degree of freedom of ultrasonic wave jointing machine, the automation transfiguration that engages operation is easy.In addition,, do not have the mechanical engagement part owing to use ultrasonic wave to engage, thus can not produce contact resistance uneven or because of vibration cause lax, thereby, can keep sufficient reliability aspect durable reliability, the maintenance.
In addition, shown in Figure 44 (a), though in the above situation that is folded into zigzag and forms battery pack that illustrated, it is stacked also can be wound in web-like shown in Figure 44 (b), can carry out the formation of battery pack equally.
In addition, the invention is not restricted to above-mentioned execution mode, can carry out various changes within the scope of the claims certainly.
And, the application is according to Japan's special permission application number 2004-363123 number of Japan's special permission application number application on December 15th, 2004-161299 number 1 of application on May 31st, 2004 and Japanese patent application No. 2005-068230 number of application on March 10th, 2005, with reference to its disclosure, and it is all enrolled.

Claims (11)

1. a battery pack (100), so that the electrode corbel back slab (the stacked a plurality of batteries of mode of the alternating polarity of 11A～11F, 12A～12F) (10A～10F) form is characterized in that, has such structure:
The electrode corbel back slab shape of each battery is corresponding to stacked position and difference, with all batteries (10A～10F) stacked the time above-mentioned electrode corbel back slab in groups, that be used for battery is connected in series mutually (bonding station of 11A～11F, 12A～12F) is divided a plurality of directions to above-mentioned battery pack (100), is electrically connected in series all batteries (10A～10F) by engaging each above-mentioned junction surface.
2. battery pack according to claim 1, it is characterized in that, above-mentioned battery (any battery among the 10A～10F)+length of the electrode corbel back slab of side is different with the length of the electrode corbel back slab of-side, and (length direction of 10A～10F) is in a plurality of positions at above-mentioned battery at the junction surface of above-mentioned electrode corbel back slab.
3. according to each described battery pack in claim 1 or 2, it is characterized in that, above-mentioned battery (any or all battery of 10A～10F), its+side or-at least one side's electrode corbel back slab of side is the L font, the junction surface of above-mentioned electrode corbel back slab is in a plurality of positions on the direction perpendicular to the stacked direction of above-mentioned battery.
4. battery pack according to claim 1, it is characterized in that (at least a portion battery in the 510A～510H) links to each other with the limit that does not have above-mentioned battery corbel back slab adjacent to the battery of above-mentioned at least a portion battery by its limit that does not have an above-mentioned electrode corbel back slab and is connected above-mentioned battery.
5. according to each described battery pack in the claim 1,2,4, it is characterized in that, ((20A～20E), (20A～20E) is used to make the electrode corbel back slab and the insulation of other electrode corbel back slabs of battery in groups to this insulating element to the insulating element that is provided with each other of 10A～10F) at above-mentioned battery.
6. battery pack according to claim 3, it is characterized in that, ((20A～20E), (20A～20E) is used to make the electrode corbel back slab and the insulation of other electrode corbel back slabs of battery in groups to this insulating element to the insulating element that is provided with each other of 10A～10F) at above-mentioned battery.
7. battery pack according to claim 5 is characterized in that, (20A～20E) one-sided is equipped with and is used to detect the above-mentioned battery (voltage detection terminal of voltage of 10A～10F) (24A～24E) at above-mentioned insulating element.
8. battery pack according to claim 6 is characterized in that, (20A～20E) one-sided is equipped with and is used to detect the above-mentioned battery (voltage detection terminal of voltage of 10A～10F) (24A～24E) at above-mentioned insulating element.
9. the manufacture method of a battery pack is characterized in that, comprising:
Make insulator (40) be arranged in groups battery to each other, (the electrode corbel back slab of 30A～30D) is bonded with each other and stage of making a plurality of unit (a, b, c, d) with battery, the electrode corbel back slab shape of this each battery is corresponding to stacked position and difference, makes that the bonding station with the electrode corbel back slab divides to a plurality of directions;
To mix said units (a, b, c, d), battery cell (30A～30D) and insulator (40), alternately laminated battery (30A～30D) and the mode of insulator (40), and with all batteries (when 30A～30D) is stacked in groups the junction surface of above-mentioned electrode corbel back slab be in diverse location the stacked above-mentioned battery of mode (30A～30D) and the stage of above-mentioned insulator (40), the junction surface of above-mentioned electrode corbel back slab is used for battery is connected in series mutually;
To be in the stage that the junction surface of diverse location engages in order.
10. the manufacture method of battery pack according to claim 9 is characterized in that, any battery in the above-mentioned battery, its+side or-length of at least one side's electrode corbel back slab of side is different with the length of the opposing party's electrode corbel back slab.
11. the manufacture method according to claim 9 or 10 described battery pack is characterized in that, any battery in the above-mentioned battery or all batteries, its+side or-at least one side's electrode corbel back slab of side is the L font.
CNB2005800177284A 2004-05-31 2005-05-30 Battery pack and manufacturing method thereof Active CN100477336C (en)

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JP068230/2005 2005-03-10

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