CN203013810U - Cover plate structure of lithium battery - Google Patents
Cover plate structure of lithium battery Download PDFInfo
- Publication number
- CN203013810U CN203013810U CN2012207154774U CN201220715477U CN203013810U CN 203013810 U CN203013810 U CN 203013810U CN 2012207154774 U CN2012207154774 U CN 2012207154774U CN 201220715477 U CN201220715477 U CN 201220715477U CN 203013810 U CN203013810 U CN 203013810U
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- CN
- China
- Prior art keywords
- hole
- lithium battery
- plate structure
- cover plate
- pressure disc
- 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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Classifications
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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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- Gas Exhaust Devices For Batteries (AREA)
Abstract
The utility model discloses a cover plate structure of a lithium battery. The cover plate structure comprises a cover plate body, an anti-explosion membrane and a plug body. The cover plate body is provided with a first through hole for automatic pressure relieving and a second through hole for extending out of an electrode. The anti-explosion membrane is placed in the first through hole and divides the first through hole into two spaces which are separated from each other. The plug body is embedded into the first through hole, and the bottom of the plug body leans against the surface of the anti-explosion membrane. The top of the plug body is level with the outer surface of the cover plate body. According to the structure provided by the utility model, the anti-explosion membrane can be effectively protected in the manufacturing process of the lithium battery so as to prevent foreign matters from entering the lithium battery, so that the yield of assembling the lithium battery is improved and the service life of the lithium battery is prolonged.
Description
Technical field
The utility model relates to a kind of lithium battery, relates in particular to a kind of covering plate structure of lithium battery.
Background technology
Lithium battery of the prior art has due to it that volume is little, energy is high, efficient is high, the life-span is long and can charge, the advantage such as can repeatedly use, and progressively becoming a kind of comparatively desirable green power supply, it is widely used in the electronic products such as mobile phone, digital camera.
When lithium battery is in normal operating state, the heat that can produce, these heat major parts are outwards conducted by the metal shell of lithium battery, avoid causing due to the build-up effect of heat the effect of the gas expansion of lithium battery interior.When lithium battery is in abnormal operating state, the heat part of its generation can be by its metal shell to outdiffusion, another part heat is owing to can not in time discharging the gas expansion that is accumulated in lithium battery interior and causes lithium battery interior, when heat continues to increase, the pressure of gas is also increasing, causes the phenomenon that the cracking of metal shell even explodes.For addressing the above problem, explosion-proof valve is on the cover board installed in general employing additional, and with releasing pressure automatically when the lithium battery interior hypertonia, yet above-mentioned anti-explosion valve structure comprises the through hole that is arranged on cover plate, is pasted with rupture pressure disc in the through hole.Although said structure can be completed decompression function, rupture pressure disc is fragile in the manufacturing process of lithium battery, easily causes extraneous air or entering of liquid and affects the performance issue of battery.In view of this, be necessary said structure is further improved.
The utility model content
For solving the problems of the technologies described above, the utility model provides a kind of covering plate structure of lithium battery, can effectively protect rupture pressure disc in lithium battery manufacturing process, prevents the lithium battery interior that enters of foreign matter, improves rate of finished products and the useful life of lithium battery assembling.
The technical scheme that the utility model adopts is: a kind of covering plate structure of lithium battery is provided, comprises cover board body, rupture pressure disc and cock body, described cover board body is provided with for self-relieving the first through hole and is used for the second through hole that electrode stretches out; Described rupture pressure disc is built in the first through hole, and it is divided into the first through hole in two spaces of mutual isolation; Described cock body embeds in the first through hole and supports the surface of rupture pressure disc bottom it, and the top of described cock body flushes with the outer surface of cover board body.
Preferably, the longitudinal section of described the first through hole is divided into up and down two parts, and top is divided into trapezoidal, and the bottom is divided into rectangle.
Concrete, also comprising fluid sealant, after described cock body embedded the first through hole, described fluid sealant was between cock body and the first through hole.
Wherein, the longitudinal section of described the second through hole is rectangle.
Useful technique effect of the present utility model is: the utility model provides a kind of covering plate structure of lithium battery, employing arranges rupture pressure disc in the first through hole of cover board body, leave distance between the inwall of rupture pressure disc and cover board body, effectively rupture pressure disc is damaged in the manufacturing process of lithium battery.Add a cock body of supporting rupture pressure disc on rupture pressure disc, can prevent that foreign object from puncturing rupture pressure disc, can effectively prevent the lithium battery interior that enters of foreign matter, and improve the rate of finished products of lithium battery assembling and extend its useful life.
Description of drawings
Fig. 1 is the covering plate structure schematic diagram of the utility model lithium battery;
Fig. 2 is the structural representation of the utility model one embodiment.
Label declaration:
The 1-cover board body, 2-rupture pressure disc, 3-fluid sealant, 4-cock body, 11-the first through hole, 12-the second through hole.
Embodiment
By describing technology contents of the present utility model, structural feature in detail, being realized purpose and effect, below in conjunction with execution mode and coordinate accompanying drawing to be explained in detail.
See also Fig. 1, the present embodiment provides a kind of covering plate structure of lithium battery, comprises cover board body 1, rupture pressure disc 2 and cock body 4, and this cover board body 1 is provided with for self-relieving the first through hole 11 to prevent lithium battery cracking or blast.Also be provided with the second through hole 12 that stretches out for electrode on this cover board body 1, positive electrode exposes by the second through hole 12.This rupture pressure disc 2 is built in the first through hole 11, is specially between the outer wall and inwall that rupture pressure disc 2 is arranged at cover board body 1, and rupture pressure disc 2 is divided into the interior space of the first through hole 11 in two spaces of mutual isolation.This cock body 4 embeds in first through holes 11 and the surface of rupture pressure disc 2 is supported in its bottom, and the top of this cock body 4 flushes with the outer surface of cover board body 1 or the outer wall of the close cover board body 1 in cock body 4 tops.In a concrete scheme, also comprise fluid sealant 3, after this cock body 4 embedded first through holes 11, sealing glue 3 was between cock body 4 and the first through hole 11.Sealing glue 3 is conducive to guarantee the air-tightness of lithium battery.Cock body 4 can will be filled with fluid sealant 3 with the recess that cover plate forms, to keep the planarization of cover board body 1 outer wall.
Consult Fig. 2, in a preferred embodiment, in above-mentioned covering plate structure, the longitudinal section of the first through hole 11 is divided into up and down two parts, and top is divided into trapezoidal, and the bottom is divided into rectangle.Trapezoidal and junction rectangle is provided with rupture pressure disc 2, and this structure is conducive to the fixing of rupture pressure disc 2 and cover board body 1.Concrete, in above-mentioned covering plate structure, the longitudinal section of the second through hole 12 is rectangle, and the shape of itself and positive electrode adapts.
The utility model provides a kind of covering plate structure of lithium battery, adopts and in the first through hole of cover board body, rupture pressure disc is set, and leaves distance between the inwall of rupture pressure disc and cover board body, and effectively rupture pressure disc is damaged in the manufacturing process of lithium battery.Add a cock body of supporting rupture pressure disc on rupture pressure disc, can prevent that foreign object from puncturing rupture pressure disc, can effectively prevent the lithium battery interior that enters of foreign matter, and improve the rate of finished products of lithium battery assembling and extend its useful life.
The above is only embodiment of the present utility model; not thereby limit the scope of the claims of the present utility model; every equivalent structure or equivalent flow process conversion that utilizes the utility model specification and accompanying drawing content to do; or directly or indirectly be used in other relevant technical fields, all in like manner be included in scope of patent protection of the present utility model.
Claims (4)
1. the covering plate structure of a lithium battery, is characterized in that, comprises cover board body, rupture pressure disc and cock body, and described cover board body is provided with for self-relieving the first through hole and is used for the second through hole that electrode stretches out; Described rupture pressure disc is built in the first through hole, and it is divided into the first through hole in two spaces of mutual isolation; Described cock body embeds in the first through hole and supports the surface of rupture pressure disc bottom it, and the top of described cock body flushes with the outer surface of cover board body.
2. the covering plate structure of lithium battery according to claim 1, is characterized in that, the longitudinal section of described the first through hole is divided into up and down two parts, and top is divided into trapezoidal, and the bottom is divided into rectangle.
3. the covering plate structure of lithium battery according to claim 1, is characterized in that, also comprises fluid sealant, and after described cock body embedded the first through hole, described fluid sealant was between cock body and the first through hole.
4. the covering plate structure of lithium battery according to claim 1, is characterized in that, the longitudinal section of described the second through hole is rectangle.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012207154774U CN203013810U (en) | 2012-12-21 | 2012-12-21 | Cover plate structure of lithium battery |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012207154774U CN203013810U (en) | 2012-12-21 | 2012-12-21 | Cover plate structure of lithium battery |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203013810U true CN203013810U (en) | 2013-06-19 |
Family
ID=48605373
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012207154774U Expired - Fee Related CN203013810U (en) | 2012-12-21 | 2012-12-21 | Cover plate structure of lithium battery |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203013810U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106785195A (en) * | 2016-12-08 | 2017-05-31 | 德阳九鼎智远知识产权运营有限公司 | A kind of lithium-ion-power cell and lithium battery module |
| WO2022087919A1 (en) * | 2020-10-28 | 2022-05-05 | 宁德时代新能源科技股份有限公司 | Cover component, battery unit, battery, power consumption apparatus, method and device |
-
2012
- 2012-12-21 CN CN2012207154774U patent/CN203013810U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106785195A (en) * | 2016-12-08 | 2017-05-31 | 德阳九鼎智远知识产权运营有限公司 | A kind of lithium-ion-power cell and lithium battery module |
| WO2022087919A1 (en) * | 2020-10-28 | 2022-05-05 | 宁德时代新能源科技股份有限公司 | Cover component, battery unit, battery, power consumption apparatus, method and device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C56 | Change in the name or address of the patentee | ||
| CP01 | Change in the name or title of a patent holder |
Address after: 518000, Shenzhen, Guangdong, Baoan District Fuyong street, Fumin Industrial Park B2 building on the third floor Patentee after: Shenzhen Hai Tong Tong Electronic Limited by Share Ltd Address before: 518000, Shenzhen, Guangdong, Baoan District Fuyong street, Fumin Industrial Park B2 building on the third floor Patentee before: Hi-Chipcom Electronics Co., Ltd. |
|
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130619 Termination date: 20181221 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |