CN103022582B - Monomer voltage sampling structure for vehicle power battery - Google Patents
Monomer voltage sampling structure for vehicle power battery Download PDFInfo
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- CN103022582B CN103022582B CN201210555808.7A CN201210555808A CN103022582B CN 103022582 B CN103022582 B CN 103022582B CN 201210555808 A CN201210555808 A CN 201210555808A CN 103022582 B CN103022582 B CN 103022582B
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- battery core
- sampling circuit
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- battery
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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
The invention discloses a monomer voltage sampling structure for a vehicle power battery, which comprises at least two monomer cells, wherein insulation clamp plates are arranged among the monomer cells; cell connection pieces are connected among tabs of the monomer cells in series; sampling circuit boards are fixed on the insulation clamp plates; and bolts are connected between the sampling circuit boards and the cell connection pieces. According to the structure, the sampling circuit boards are connected with the cell connection pieces by the bolts, as a result, the bolts can realize compaction and fixation of the sampling circuit boards so that the circuit boards and the cell connection pieces are tightly contacted with each other to realize electric conduction, and can synchronously achieve an electric conduction effect so that safety and stability of voltage sampling signals are improved; the monomer cells are spaced from one another through the insulation clamp plates, so that insulation and tightness are realized, the structure is compact, the insulation protective performance is improved, and the whole structure has excellent vibration resistance, safety and stability; and the structure has the advantages of convenience in assembly, simplicity in operation, good manufacturability and low cost.
Description
Technical field
The present invention relates to the monomer voltage sampling structure of secondary cell, refer to a kind of automobile power cell monomer voltage sampling structure particularly.
Background technology
Because of the impact of the factor such as energy crisis and environmental pollution; using electric energy as the emerging vehicles that the hybrid power of power source or pure electric automobile are representative, the advantages such as little and energy source is diversified because its energy utilization rate is high, without discharge, noise become auto industry important field of research.Electrokinetic cell is the critical component in electric automobile, and the quality of its performance will directly have influence on the quality of vehicle performance.Major impetus as electric automobile is originated, and the design of battery module needs to consider several factors, should ensure that performance of battery module meets the requirement of car load, also will ensure that battery module has enough safety and reliabilities simultaneously.Power battery module generally comprises: multiple monomer battery core, battery core fixed structure assembly, battery core connect copper bar, voltage sample structure, temperature sensor etc.
At present, battery module design technology is not yet ripe, cause the energy density of battery module, useful life, safety and stability can't meet the requirement of motor vehicle operation, govern the development of new-energy automobile cause, and battery management system is as the important component part of battery system, its appearance can optimize the use energy content of battery, stop battery abuse, realize the real-time high-efficiency management of battery thus the useful life of prolongation battery system, battery system performance is promoted greatly thus meets various car load demand, and the realization of these functions of battery management system needs an important parameter, this parameter is exactly battery cell voltage, the approach obtaining battery cell voltage is exactly voltage sample structure.
Automobile is the system of a movement, the shock resistance of copper bar, voltage sample structure and various detecting sensor is connected to each battery core fixed structure assembly of power battery module, battery core, stability, fail safe have very high requirement, guarantee the normal work maintaining battery module and whole battery system in running environment, therefore the stability of voltage sample structure and security reliability directly have influence on performance and the safety of whole battery system.At present, secondary lithium-ion battery core adopts maximum forms to be exactly lamination shape, its application prospect on new-energy automobile is very extensive, but its lug material is thin, too soft, the modes such as direct employing welding, riveted joint, crimping are carried out employing to it and are exported, there is the problem of inconvenient operation, easily infringement battery core and connection reliability difference, therefore how voltage sample structure realizes both being beneficial to installation, and compact is again conveniently one of problem; How to make it have good shock resistance, stability, safety and reliability be problem two, therefore, the design of voltage sample structure is a large technical bottleneck in battery module design.
Summary of the invention
The object of the invention is to provide a kind of automobile power cell monomer voltage sampling structure for the problems referred to above, this sampling structure can improve the Stability and dependability of voltage sampling signal; And it is installed and handling safety, convenience.
The technical solution used in the present invention is: a kind of automobile power cell monomer voltage sampling structure, it comprises at least two monomer battery cores, cleat insulator is separated with between described monomer battery core, battery core brace is in series with between the lug of described monomer battery core, described cleat insulator is fixed with sampling circuit board, between described sampling circuit board and battery core brace, is connected with bolt.
Sampling circuit board is connected with battery core brace by the present invention's bolt; this bolt can realize being fixed sampling circuit board; circuit board is made to contact with brace closely and realize conducting electricity; and bolt also serves electric action simultaneously; relative to traditional welding manner, not only connect simple, and the safety and stability of voltage sampling signal is improved; also make the shape of sampling circuit board can adjust according to battery core and battery module shape, flexibility is high; Between the monomer battery core of this sampling structure by cleat insulator separate realize insulation and fastening, both improve insulating protection performance, again compact convenience, and made overall structure have good shock resistance and security and stability; The present invention is easy to assembly, simple to operate, security reliability is high, good manufacturability, with low cost.
Further, the outer face of described cleat insulator has breach, adjacent multiple breach forms draw-in groove, and described sampling circuit board is fixed in described draw-in groove.The sampling circuit board at battery module two ends is set in the draw-in groove that is fixed on and surrounded by cleat insulator end face breach respectively, this embedded fixed form is not only conducive to sampling circuit board and contacts with the closely knit of battery core brace, also make total more firmly compact, while enhancing processing safety, be also conducive to the layout of environment part.
Further, described sampling circuit board is provided with connector and fixing hole, and described bolt is connected with described battery core brace through described fixing hole, and the periphery of described fixing hole is provided with pad, is connected with electric trace between described pad and described connector.The battery core voltage introduced from fixing hole is directly delivered to connector by the electric trace on sampling circuit board, to detect monomer battery core voltage in battery module, realize voltage sample, this structure makes whole battery module compacter, and the fail safe of voltage sampling signal, stability and shock resistance are improved; Design the larger pad of an area in the outside of fixing hole, for increasing the contact area of sampling circuit board and battery core brace, reduce contact resistance, improve the Stability and dependability of sampled signal; Sampling circuit board can also add as required flexibly other and control electronic devices and components, realize the Balance route, overvoltage protection, overcurrent protection, over-charge protective etc. to battery core and battery module, thus cost and the size of battery management system master control borad can be reduced, make entire system integration degree higher; And by controlling the connector of sampling circuit board and the encapsulated shell structural of sampling circuit board, control the degree of protection of monomer voltage sampling structure flexibly.
Further, described battery core brace is welded on described lug, and battery core brace is provided with thieff hatch, is connected with bolt between the fixing hole on described thieff hatch and described sampling circuit board.Battery core brace is used for monomer battery core to couple together, and is drawn by the voltage of monomer battery core with coordinating of bolt by thieff hatch; Meanwhile, battery core brace also can offering pole column hole, exporting pole for installing battery plus-negative plate.
Preferably, the copper cash that described electric trace employing thickness is alternate.Adopt copper cash to replace sampling wire harness, saved material cost, improve space availability ratio; By the thickness of control design case sampling circuit board electric trace, make sampling circuit board can also when sampling circuit is short-circuited instantaneous trip loop, thus provide protection for battery core and battery management system.
Further preferably, screw thread is provided with in described thieff hatch.Bolt is fully contacted with thieff hatch, thus voltage signal is reliablely and stablely drawn.
Accompanying drawing explanation
Fig. 1 is the perspective view of battery module.
Fig. 2 is the decomposition texture schematic diagram of automobile power cell monomer voltage sampling structure.
Fig. 3 is the structural representation of monomer battery core in Fig. 2.
Fig. 4 is the connected mode schematic diagram of monomer battery core in Fig. 2.
Fig. 5 is front side sampling circuit board structural representation.
Fig. 6 is rear side sampling circuit board structural representation.
Fig. 7 is the structural representation of front side the first battery core brace.
Fig. 8 is the structural representation of front side the second battery core brace.
Fig. 9 is the structural representation of front side the 3rd battery core brace.
Figure 10 is the structural representation of front side the 4th battery core brace.
Figure 11 is battery module front side structure schematic diagram in Fig. 1.
Figure 12 is the structural representation of rear side the first battery core brace.
Figure 13 is the structural representation of rear side the second battery core brace.
Figure 14 is the structural representation of rear side the 3rd battery core brace.
Figure 15 is the structural representation of rear side the 4th battery core brace.
Figure 16 is battery module rear structure schematic diagram in Fig. 1.
Figure 17 is front side sampling circuit board electronic schematic diagram.
Figure 18 is rear side sampling circuit board electronic schematic diagram.
Embodiment
Below in conjunction with the drawings and specific embodiments, the present invention is described in further detail, is convenient to more clearly understand the present invention, but they do not form restriction to the present invention.
As Fig. 1, shown in Fig. 2, a kind of automobile power cell monomer voltage sampling structure, it comprises the battery module be made up of four joint lamination shape secondary lithium battery monomer battery cores 1, the side, front and back of monomer battery core 1 is respectively equipped with lug 2 (as Fig. 3), described four joint monomer battery cores 1 are stacked layer by layer, adjacent monomer battery core 1 polarity is contrary, before and after monomer battery core 1, the lug 2 of side is together in series (as Fig. 4) by four pieces, each side battery core brace 3, five pieces of cleat insulators 4 are separated with respectively between the two ends of described each monomer battery core 1, to realize insulation between monomer battery core 1 and fastening, the outer face of cleat insulator 4 has breach, multiple breach on adjacent cleat insulator 4 form draw-in groove 24, two pieces of sampling circuit boards 5, 8 be separately fixed at surrounded by cleat insulator 4 by bolt 17 before, in rear draw-in groove 24, the shape of draw-in groove 24 and the matching form of corresponding sampling circuit board close, two pieces of sampling circuit boards 5, 8 are provided with fixing hole, part battery core brace 3 is provided with thieff hatch, bolt 17 is by sampling circuit board 5, fixing hole on 8 is directly connected with the thieff hatch of corresponding battery core brace 3.
As shown in Figure 5, on front side of battery module, sampling circuit board 5 is provided with lower voltage sample connector 501 and has three fixing holes, be respectively the first fixing hole 502, second fixing hole 503 and the 3rd fixing hole 504, the periphery of described fixing hole is respectively equipped with pad 6, is connected with electric trace 7 between described pad 6 and described lower voltage sample connector 501.
As shown in Figure 6, on rear side of battery module, sampling circuit board 8 is provided with voltage sample connector 801 and has two fixing holes, be respectively the 4th fixing hole 802 and the 5th fixing hole 803, the periphery of described fixing hole is provided with pad 6, is connected with electric trace 7 between described pad 6 and described upper voltage sample connector 801.The external structure of battery module is then made up of with upper voltage sample connector 801 and two poles 18 cleat insulator 4, lower voltage sample connector 501.
As shown in Figure 2, on four lugs 2 on front side of battery module, correspondence is welded with four pieces of battery core braces 3, battery core monomer 1 couples together by the opposite polarity mode of adjacent battery core by it, be provided with front side the first battery core brace 301(from top to bottom successively as Fig. 7), front side the second battery core brace 302(is as Fig. 8), front side the 3rd battery core brace 303(is as Fig. 9), front side the 4th battery core brace 304(is as Figure 10), wherein front side the first battery core brace 301 is provided with pole column hole 11 and the first thieff hatch 12; Front side the 3rd battery core brace 303 is provided with the second thieff hatch 13, and front side the 4th battery core brace 304 is provided with pole column hole 11 and the 3rd thieff hatch 14.Three bolts 17 are by the first fixing hole 502 on sampling circuit board 5 on front side of battery core, second fixing hole 503 and the 3rd fixing hole 504 penetrate the first thieff hatch 12 on front side of battery core on battery core brace 3 respectively, second thieff hatch 13, with the 3rd thieff hatch 14, thus the signal of telecommunication of corresponding monomer battery core 1 is drawn (as Figure 11) respectively.
As shown in Figure 2, on four lugs 2 on rear side of battery core, correspondence is welded with four pieces of battery core braces 3, be provided with rear side the first battery core brace 305(from top to bottom successively as Figure 12), rear side the second battery core brace 306(is as Figure 13), rear side the 3rd battery core brace 307(is as Figure 14), rear side the 4th battery core brace 308(is as Figure 15), wherein, rear side the second battery core brace 306 is provided with the 4th thieff hatch 15, and rear side the 4th battery core brace 308 is provided with the 5th thieff hatch 16.Two bolts 17 penetrate the 4th thieff hatch 15 on rear side of battery core on battery core brace 3 and the 5th thieff hatch 16(as Figure 16 respectively by the 4th fixing hole 802 on sampling circuit board on rear side of battery core 8 and the 5th fixing hole 803).Be equipped with screw thread in above-mentioned five thieff hatchs to fix to facilitate bolt, the sampling circuit board 5 of forward and backward side band plug connector, 8 are fixed in the draw-in groove 24 at the two ends of battery module by bolt 17, bolt 17 is directly connected with the thieff hatch on corresponding battery core brace 3, can realize sampling circuit board 5,8 be fixed, make pad 6 on sampling circuit board contact with battery core brace 3 closely and realize conducting electricity, and bolt 17 also serves electric action simultaneously.
Figure 17 and Figure 18 is respectively the electrical schematic diagram of the sampling circuit board 5 of front side and sampling circuit board 8 correspondence of rear side, wherein, hole 19, hole 20, hole 21, hole 22 and hole 23 respectively with the first fixing hole 502, second fixing hole 503, the 3rd fixing hole 504, the 4th fixing hole 802 on circuit board, and the 5th fixing hole 803 one_to_one corresponding, and then, the thieff hatch of battery core brace 3 is connected with the contact pin of corresponding connector respectively by electric trace 7, thus the lead-out terminal 9 formed battery core voltage signal, 10, to detect monomer voltage; The copper cash that electric trace 7 adopts thickness alternate, the thickness of electric trace 7 can be determined according to voltage sampling signal electric current and battery core euqalizing current value, and it is alternate electric trace 7 to be designed to thickness, can be battery management system sampling circuit and balanced loop provides short-circuit protection; In addition, devising the larger pad 6 of area in the periphery of fixing hole is contacts area in order to increase sampling circuit board and battery core brace thieff hatch, reduces contact resistance, improves the Stability and dependability of sampled signal; Moreover, sampling circuit board can also add as required other and control electronic devices and components, the Balance route, overvoltage protection, overcurrent protection, over-charge protective etc. to monomer battery core and battery module can be realized, thus cost and the size of battery management system master control borad can be reduced, make entire system integration degree higher; Connector and circuit board shape size can adjust according to actual installation situation.
Claims (5)
1. an automobile power cell monomer voltage sampling structure, it comprises at least two monomer battery cores, it is characterized in that: between described monomer battery core, be separated with cleat insulator, battery core brace is in series with between the lug of described monomer battery core, described cleat insulator is fixed with sampling circuit board, between described sampling circuit board and battery core brace, is connected with bolt; Described sampling circuit board is provided with connector and fixing hole, and described bolt is connected with described battery core brace through described fixing hole, and the periphery of described fixing hole is provided with pad, is connected with electric trace between described pad and described connector.
2. automobile power cell monomer voltage sampling structure according to claim 1, is characterized in that: the outer face of described cleat insulator has breach, and adjacent multiple breach forms draw-in groove, and described sampling circuit board is fixed in described draw-in groove.
3. automobile power cell monomer voltage sampling structure according to claim 1, it is characterized in that: described battery core brace is welded on described lug, and battery core brace is provided with thieff hatch, between the fixing hole on described thieff hatch and described sampling circuit board, be connected with bolt.
4. automobile power cell monomer voltage sampling structure according to claim 1, is characterized in that: the copper cash that described electric trace adopts thickness alternate.
5. automobile power cell monomer voltage sampling structure according to claim 3, is characterized in that: be provided with screw thread in described thieff hatch.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210555808.7A CN103022582B (en) | 2012-12-20 | 2012-12-20 | Monomer voltage sampling structure for vehicle power battery |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201210555808.7A CN103022582B (en) | 2012-12-20 | 2012-12-20 | Monomer voltage sampling structure for vehicle power battery |
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| CN103022582A CN103022582A (en) | 2013-04-03 |
| CN103022582B true CN103022582B (en) | 2015-02-04 |
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Families Citing this family (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105489821A (en) * | 2015-12-22 | 2016-04-13 | 广州汽车集团股份有限公司 | Battery module |
| CN107230749A (en) * | 2016-03-25 | 2017-10-03 | 深圳市沃特玛电池有限公司 | A kind of Li-ion batteries piles |
| CN106450526A (en) * | 2016-11-23 | 2017-02-22 | 湖南三迅新能源科技有限公司 | Power battery cell structure and battery pack |
| CN108091791B (en) * | 2017-07-04 | 2024-01-09 | 系统电子科技（镇江）有限公司 | Battery pack internal cell fixing structure |
| CN107632188A (en) * | 2017-08-21 | 2018-01-26 | 深圳市恒翼能科技有限公司 | Battery charging and discharging equipment twin voltage sample circuit |
| CN108878759A (en) * | 2018-06-28 | 2018-11-23 | 国网福建省电力有限公司厦门供电公司 | A kind of layout structure and connector suitable for storage batteries of transformer substation group |
| CN111987249A (en) * | 2019-05-23 | 2020-11-24 | 南京德朔实业有限公司 | Battery pack and electric tool |
| CN114156435B (en) * | 2021-12-08 | 2024-07-02 | 国网伊犁伊河供电有限责任公司 | Novel electrode connecting sheet of gel lithium battery |
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| CN101395490A (en) * | 2006-03-06 | 2009-03-25 | 株式会社Lg化学 | Voltage sensing member and battery module employed with the same |
| CN101916883A (en) * | 2010-07-12 | 2010-12-15 | 北京科易动力科技有限公司 | Battery pack, packing method thereof and electric vehicle |
| CN202977643U (en) * | 2012-12-20 | 2013-06-05 | 东风汽车公司 | Single voltage sampling structure for vehicle power battery |
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2012
- 2012-12-20 CN CN201210555808.7A patent/CN103022582B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101395490A (en) * | 2006-03-06 | 2009-03-25 | 株式会社Lg化学 | Voltage sensing member and battery module employed with the same |
| CN101916883A (en) * | 2010-07-12 | 2010-12-15 | 北京科易动力科技有限公司 | Battery pack, packing method thereof and electric vehicle |
| CN202977643U (en) * | 2012-12-20 | 2013-06-05 | 东风汽车公司 | Single voltage sampling structure for vehicle power battery |
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