CN201298575Y - Disposable square lithium battery - Google Patents
Disposable square lithium battery Download PDFInfo
- Publication number
- CN201298575Y CN201298575Y CN200820203141.3U CN200820203141U CN201298575Y CN 201298575 Y CN201298575 Y CN 201298575Y CN 200820203141 U CN200820203141 U CN 200820203141U CN 201298575 Y CN201298575 Y CN 201298575Y
- Authority
- CN
- China
- Prior art keywords
- collector
- positive terminal
- lithium battery
- current collector
- battery
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
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- Y02E60/12—
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- Cell Electrode Carriers And Collectors (AREA)
- Connection Of Batteries Or Terminals (AREA)
- Sealing Battery Cases Or Jackets (AREA)
Abstract
A disposable square lithium battery comprises a battery shell as well as a lithium piece, an edge film and a carbon bag which are sequentially sleeved in the shell. The edge of the opening of the shell is provided with a cover film and a cover film assembly which comprises a cover body, a sealing body and a current collector assembly. The current collector assembly comprises a current collector inserted in the carbon bag, an anode pole connected with the current collector, and a glass seal arranged between the anode pole and the cover, wherein the anode pole and the current collector are separate bodies. Through the change of the shape design of the anode pole and the current collector and the abandoning of the use of nickel serving as stainless steel and the use of ferronickel alloy plated with nickel, the utility model realizes less resistance and better electricity conductivity of the anode and the current collector; and during the discharge of the battery, the electrochemical reaction of different parts of the anode carbon bag is more uniform, the discharge is more stable, the discharge volume and the discharge voltage are improved, and the current output capability and the uniformity of the battery performance are also improved.
Description
Technical field
The utility model relates to a kind of structure of a quadrate lithium battery, refers in particular to a kind of lithium/thinly chloride Li/SOCl2, lithium/chlorosulfuric acid Li/SO2Cl2, lithium/sulfur dioxide Li/SO2, lithium/manganese dioxide Li/MnO2, lithium/iron disulfide Li/FeS2 and lithium/chemical system, lithium batteries square carbon packet mode structure, the disposable lithium-battery system such as sulphur Li/S of being used for.
Background technology
Carbon packet mode quadrate lithium battery, the specific energy height, self-discharge rate is low, storage life and long service life, the lithium battery that is applied to some field reaches more than 10 years useful life, and is therefore very high to performance reliability, the coherence request of this class battery.Fig. 1,2 has provided the basic structure of prior art, comprise battery container 1 and be sleeved on housing interior lithium sheet 2, limit film 3, carbon bag 4 successively, be provided with epiphragma 5 at the Kou Yanchu of housing, on epiphragma, be provided with cap assembly, cap assembly comprises block body 6, be provided with a seal 7 and collector assembly at block on the body, the collector assembly comprises the collector 8 that inserts in the carbon bag, and the positive terminal 9 that fuses of collector and the glass capsulation 10 between positive terminal and the block.The granted patent that the applicant had originally " 200420014808.7 quadrate lithium battery " and " the square lithium/thinly chloride battery of 200620159534.X " disclosed quadrate lithium battery technology promptly belong to this type of.
But in the actual production manufacture process, find, when quadrate lithium battery length and wide unequal, when presenting the square profiles of flat, employed plus plate current-collecting body is in a side of anode in the existing technical scheme, rather than be in anodal center, and can cause the discharge at battery each anodal position in discharge process inhomogeneous like this, the phenomenon that is showed is exactly the electric current fan-out capability deficiency of battery, discharge capacity is on the low side, and discharge voltage is on the low side.The battery of this structure also exists following defective: in assembling process, during owing to metal-glass sealing block high temperature sintering the annealing effect taking place causes the metal collector of chip softening, collector meeting flexural deformation when inserting the carbon bag thus, when serious even can cause internal short-circuit (fraction defective is more than 0.2%), can cause when slight that product reliability descends, the hidden danger rate rises; In assembling process, on one side, unbalance stress influences the stability and the consistency of internal structure partially in the positive terminal position; Single afflux material (its catchment effect of material 4J28 of the sintering that is suitable for blocking a shot is relatively poor), more inclined to one side collector position have influenced afflux ability and even battery electrical property.
The utility model content
For solving problems of the prior art, the utility model proposes an a kind of quadrate lithium battery, guarantee the consistency of battery electrical property and overcome the internal short-circuit of battery potential problem by improving the collector buckling problem that produces in the assembling process.The utility model has also proposed to improve the collector sculpting method of catchment effect, and makes the method for an above-mentioned quadrate lithium battery.
Designed an a kind of quadrate lithium battery according to the above-mentioned problem that needs to solve, comprise battery container and be sleeved on the interior lithium sheet of housing successively, the limit film, the carbon bag, Kou Yanchu at housing is provided with epiphragma, on epiphragma, be provided with cap assembly, cap assembly comprises the block body, on the block body, be provided with a seal and collector assembly, the collector assembly comprises the collector that inserts in the carbon bag, glass capsulation between positive terminal that is connected with collector and positive terminal and the block, respectively be separate component between described positive terminal and collector, fit tightly mutually between positive terminal and collector and be fixed into one by welding.
Wherein, described positive terminal is straight-bar shape, and this positive terminal passes the bottom of block behind the body and fits tightly and fixedly connected with the upper end of collector and be integral.And collector is J-shaped, be inverted assembling, the crotch end of J-shaped fits tightly and fixedlys connected with the bottom of positive terminal and is integral, perhaps described collector is Z-shaped, a Z-shaped end and the bottom of positive terminal fits tightly and fixing integrally welded, also can adopt down the collector of capitate, the termination of hammer handle and the bottom of positive terminal fits tightly and fixing integrally welded.Both wings formula collector and stem composition that the planform of collector is served as reasons and is flat-shaped structure, both wings formula collector is positioned at the central authorities of battery.In addition, the material of the positive terminal of employing and collector is different.
The utility model is by changing the shaped design of anodal and collector, and stainless steel that prior art uses makes positive pole as the iron-nickel alloy of nickel or nickel plating etc. and collector is littler than resistance, conductivity is better by changing; Also make battery in discharge process, the electrochemical reaction at each position is more even in the inside battery carbon bag, it is more steady to discharge, discharge capacity and discharge voltage are improved, has bigger electric current fan-out capability, with the consistency of having improved battery performance, thereby efficiently solve the problem that the utility model proposes.Be embodied in: one, positive terminal and collector are different metal materials, on the one hand improved positive terminal and glass capsulation performance, the monomer surface productive set that has also improved collector flows ability, has prevented that the consistency of disposable lithium-battery internal short-circuit after the collector bending or electrical property is poor; Its two, the planform of collector has on the one hand and prevents crooked characteristics, increases catchment effect on the other hand, reduces the inner deformation of carbon bag; Its three, by the bending design feature, unbalance stress takes place crooked when preventing that battery when assembling collector from inserting the carbon bag; Its four, current collection mode placed in the middle has improved catchment effect and electrical property; Its five, the independent of positive terminal and collector is provided with, and impels the unification of block model, saves manufacturing cost, as long as longly can use identical block with wide all identical and highly different quadrate lithium batteries.
Description of drawings
Embodiment
Below in conjunction with accompanying drawing the utility model is done and to be described in further detail.
With reference to accompanying drawing 3～5.The basic comprising of a quadrate lithium battery of the utility model is, by battery container 1 be sleeved on lithium sheet 2 in the housing successively, limit film 3, carbon bag 4 and be arranged on housing the mouth along the place epiphragma 5, the cap assembly that is arranged on the epiphragma is formed, cap assembly comprises block body 6, be located at seal 7 and collector assembly on the block body, the collector assembly comprises the collector 8 that inserts in the carbon bag, be connected with collector but the positive terminal 9 of separate component and the glass capsulation 10 between positive terminal and the block each other, fit tightly mutually and be fixedly connected by welding between positive terminal and collector during assembling and be integral.Wherein, collector reaches the both wings that stretch out from its both sides by stem and forms (stem and the both wings that are flat-shaped structure), and promptly the cross section of both wings and stem is middle font; Be connected for electric resistance welding between collector and positive terminal or other guarantees to be electrically connected unobstructed fastening means, and collector and positive terminal are dissimilar metal, collector adopts the catchment effect preferred metal to make, and reduces cost thus, and also can realize between positive terminal and vitreum sealing more well.
During enforcement, positive terminal is unified to be adopted straight-bar shape, this positive terminal to pass bottom behind the block body to fit tightly and fixedly connected with the upper end of collector and be integral; And the shape of collector can go out various ways according to concrete demand conversion.Execution mode one still adopts straight-bar shape collector, but this collector is assemblied in deflection battery center one side, or collector is down capitate, the termination of hammer handle and the bottom of positive terminal fits tightly and fix integrally welded; Execution mode two, collector is J-shaped, is inverted assembling, and the crotch end of J-shaped is with the bottom of positive terminal fits tightly and fix integrally welded; Execution mode three, collector are Z-shaped, a Z-shaped end and the bottom of positive terminal fits tightly and fixing integrally welded.In a word, must be to guarantee that both wings formula collector is positioned at or the central authorities that are partial to battery are prerequisite.
Above-mentioned embodiment is the preferable implementation of the utility model.The shape of the utility model collector is varied, can also other forms realize, so need to prove, under the prerequisite that does not break away from the present utility model design, any conspicuous replacement is all within the utility model protection range.
Claims (8)
1, an a kind of quadrate lithium battery, comprise battery container (1) and be sleeved on housing interior lithium sheet (2), limit film (3), carbon bag (4) successively, be provided with epiphragma (5) at the Kou Yanchu of housing, on epiphragma, be provided with cap assembly, cap assembly comprises block body (6), on the block body, be provided with a seal (7) and collector assembly, the collector assembly comprises the glass capsulation (10) between collector (8), the positive terminal (9) that is connected with collector and positive terminal and the block that inserts in the carbon bag, it is characterized in that
Respectively be separate component between described positive terminal and collector, fit tightly mutually between positive terminal and collector.
2, a quadrate lithium battery according to claim 1 is characterized in that described positive terminal is straight-bar shape, and this positive terminal passes bottom and the upper end of collector of block behind the body and fits tightly and be fixed into one by welding.
3, a quadrate lithium battery according to claim 2 is characterized in that described collector is J-shaped, is inverted assembling, and the crotch end of J-shaped and the bottom of positive terminal fit tightly and be fixed into one by welding.
4, a quadrate lithium battery according to claim 2 is characterized in that described collector is Z-shaped, and a Z-shaped end and the bottom of positive terminal fit tightly and be fixed into one by welding.
5, a quadrate lithium battery according to claim 2 is characterized in that described collector is down capitate, and the termination of hammer handle and the bottom of positive terminal fit tightly and be fixed into one by welding.
6, according to each described quadrate lithium battery in the claim 1～5, it is characterized in that described collector is made up of the both wings formula collector and the stem that are flat-shaped structure, the cross section of described both wings formula collector and stem is middle font.
7,, it is characterized in that described collector both wings formula collector is positioned at or is partial to the central authorities of battery according to each described quadrate lithium battery in the claim 1～5.
8, according to each described quadrate lithium battery in the claim 1～5, it is characterized in that the material of described positive terminal and collector is different.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200820203141.3U CN201298575Y (en) | 2008-11-08 | 2008-11-08 | Disposable square lithium battery |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200820203141.3U CN201298575Y (en) | 2008-11-08 | 2008-11-08 | Disposable square lithium battery |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201298575Y true CN201298575Y (en) | 2009-08-26 |
Family
ID=41044562
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN200820203141.3U Expired - Fee Related CN201298575Y (en) | 2008-11-08 | 2008-11-08 | Disposable square lithium battery |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201298575Y (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102738418A (en) * | 2012-06-30 | 2012-10-17 | 惠州亿纬锂能股份有限公司 | Square lithium-ferrous disulfide battery and its preparation method |
-
2008
- 2008-11-08 CN CN200820203141.3U patent/CN201298575Y/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102738418A (en) * | 2012-06-30 | 2012-10-17 | 惠州亿纬锂能股份有限公司 | Square lithium-ferrous disulfide battery and its preparation method |
| CN102738418B (en) * | 2012-06-30 | 2015-08-12 | 惠州亿纬锂能股份有限公司 | Square lithium-ferrous disulfide battery and preparation method thereof |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20090826 Termination date: 20171108 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |