CN202996944U - Novel explosion-proof structure of battery shell - Google Patents
Novel explosion-proof structure of battery shell Download PDFInfo
- Publication number
- CN202996944U CN202996944U CN2012207209921U CN201220720992U CN202996944U CN 202996944 U CN202996944 U CN 202996944U CN 2012207209921 U CN2012207209921 U CN 2012207209921U CN 201220720992 U CN201220720992 U CN 201220720992U CN 202996944 U CN202996944 U CN 202996944U
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- Prior art keywords
- explosion
- battery
- proof
- battery shell
- novel
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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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- Secondary Cells (AREA)
- Sealing Battery Cases Or Jackets (AREA)
- Gas Exhaust Devices For Batteries (AREA)
Abstract
The utility model relates to the technical field of safety of a lithium battery and particularly relates to a novel explosion-proof structure of a battery shell. The novel explosion-proof structure comprises the battery shell; two symmetrical circular-arc-shaped explosion-proof nicks are arranged at the part with the maximum deformation of the battery shell in design requirements; and the depths of the explosion-proof nicks are 50% of the wall thickness of the battery shell. According to the novel explosion-proof structure disclosed by the utility model, aiming at the conditions that inner pressure is continuously improved in heating and expanding processes of the battery and explosion is very easily generated if the inner pressure is not removed in time, the deformation of the battery shell in the process of improving the inner pressure of the battery is combined and the explosion-proof nicks are arranged at the part with the maximum deformation, so as to be good for explosion proofing and air discharging of the battery; and meanwhile, the circular-arc-shaped explosion-proof nicks can be in an outward-turned tearing shape when the battery shell cracks, so that the novel explosion-proof structure is good for the air discharging of the battery, is good in safe and explosion-proof effects and is high in practical value.
Description
Technical field
The utility model relates to lithium battery safe practice field, especially a kind of blast resistance construction of novel battery casing.
Background technology
At present, lithium battery because of environmental protection, specific energy is high and the advantage such as lightweight comes into one's own.But lithium battery is but hiding the danger of blast always, and more and more wide owing to using, explosive incident also emerges in an endless stream.The blast of lithium battery is generally to cause internal temperature of battery to rise because battery may occur abnormal short circuit occurring in non-normal use or battery, cell internal pressure increases, and battery case holds be can't stand cell internal pressure and moment destructiveness, direction-free cracking occur.
Traditional battery all is provided with anti-explosion gas outlet means usually for avoiding blasting, surperficial centre as anodal in the metal shell of modal button type NI-G and Ni-MH battery processes shape as the concave of "+", " rice ", " C " or " work ", these concaves are relatively frangible parts, can break in advance alleviates internal pressure, but the setting of these concaves is easy to mislead the user to the understanding of battery polar; Simultaneously, the concave that is positioned at surface central authorities also can hinder the pinpoint welding procedure of brace, may produce the discharge characteristic that changes concave in bad connection or connection procedure, destroys the original explosion prevention function of concave.
The utility model content
For the deficiencies in the prior art, the purpose of this utility model is to provide a kind of blast resistance construction of the novel battery casing of reliable release, drainage pressure more rapidly, to improve the safety anti-explosive performance of lithium battery.
To achieve these goals, the utility model adopts following technical scheme:
A kind of blast resistance construction of novel battery casing, it comprises battery case, be provided with explosion-proof indentation on the positive and negative electrode side of described battery case, described explosion-proof indentation is the circular arc of two symmetries, and described explosion-proof indentation is positioned at the maximum that requires battery case generation deformation in design.
Preferably, the degree of depth of described explosion-proof indentation is 50% of battery case wall thickness.
Owing to having adopted such scheme, the utility model raises for pressing constantly in battery is in heating, swell process, if press the situation that very easily produces blast in untimely eliminating, deformation in conjunction with battery case in the inner pressure of battery elevation process, at the maximum that deformation occurs, explosion-proof indentation is set, is beneficial to the anti-explosion exhaust of battery; Simultaneously, the explosion-proof indentation of circular arc can present the shape of tearing of turning up when battery case ftractures, and is more conducive to the exhaust of battery, and safety anti-explosive is effective, practical value is high.
Description of drawings
Fig. 1 is the front view of the anti-riot indentation of the utility model embodiment.
Embodiment
Below in conjunction with accompanying drawing, embodiment of the present utility model is elaborated, but the multitude of different ways that the utility model can be defined by the claims and cover is implemented.
As shown in Figure 1, the blast resistance construction of a kind of novel battery casing that the utility model provides, it comprises battery case 1, is provided with explosion-proof indentation 2 on the positive and negative electrode side of battery case 1, explosion-proof indentation 2 is the circular arc of two symmetries; Raise for pressing constantly in battery is in heating, swell process, if press the situation that very easily produces blast in untimely eliminating, and in conjunction with the deformation of battery case 1 in the inner pressure of battery elevation process, the maximum of deformation occurs in the battery case 1 that explosion-proof indentation 2 is arranged in designing requirement, thereby strengthens the anti-explosion exhaust effect of battery.
Simultaneously, the degree of depth of explosion-proof indentation 2 is 50% of battery case 1 wall thickness, and take modal aluminum-shell battery as example, the degree of depth operated by rotary motion of anti-riot indentation 2 is in the 0.13mm left and right.
In addition, anti-riot indentation 2 is designed to circular arc than traditional "+", " rice ", " C " or " work " shape, more be conducive to air current composition, be convenient to the battery exhaust, thereby guarantee that explosion-proof indentation 2 can present the shape of tearing of turning up when battery case 1 cracking, have very high safety anti-explosive effect and practical value.
The above is only preferred 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 (2)
1. the blast resistance construction of a novel battery casing, it comprises battery case, be provided with explosion-proof indentation on the positive and negative electrode side of described battery case, it is characterized in that: described explosion-proof indentation is the circular arc of two symmetries, and described explosion-proof indentation is positioned at the maximum of the upper battery case generation deformation that requires of design.
2. the blast resistance construction of a kind of novel battery casing as claimed in claim 1, it is characterized in that: the degree of depth of described explosion-proof indentation is 50% of battery case wall thickness.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012207209921U CN202996944U (en) | 2012-12-25 | 2012-12-25 | Novel explosion-proof structure of battery shell |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012207209921U CN202996944U (en) | 2012-12-25 | 2012-12-25 | Novel explosion-proof structure of battery shell |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202996944U true CN202996944U (en) | 2013-06-12 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012207209921U Expired - Fee Related CN202996944U (en) | 2012-12-25 | 2012-12-25 | Novel explosion-proof structure of battery shell |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202996944U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105938888A (en) * | 2016-06-20 | 2016-09-14 | 深圳天珑无线科技有限公司 | Method for setting explosion-proof line of battery and explosion-proof battery |
| CN106374060A (en) * | 2016-10-12 | 2017-02-01 | 中山市小榄镇大久金属制品厂 | Square shell of lithium battery or power lithium battery |
| CN106784428A (en) * | 2017-01-17 | 2017-05-31 | 无锡市金杨新型电源有限公司 | A kind of anti-explosion battery shell |
| WO2023050098A1 (en) * | 2021-09-28 | 2023-04-06 | 宁德时代新能源科技股份有限公司 | Pressure relief apparatus, battery cell, battery and electrical device |
-
2012
- 2012-12-25 CN CN2012207209921U patent/CN202996944U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105938888A (en) * | 2016-06-20 | 2016-09-14 | 深圳天珑无线科技有限公司 | Method for setting explosion-proof line of battery and explosion-proof battery |
| CN106374060A (en) * | 2016-10-12 | 2017-02-01 | 中山市小榄镇大久金属制品厂 | Square shell of lithium battery or power lithium battery |
| CN106784428A (en) * | 2017-01-17 | 2017-05-31 | 无锡市金杨新型电源有限公司 | A kind of anti-explosion battery shell |
| WO2023050098A1 (en) * | 2021-09-28 | 2023-04-06 | 宁德时代新能源科技股份有限公司 | Pressure relief apparatus, battery cell, battery and electrical device |
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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: 20130612 Termination date: 20151225 |
|
| EXPY | Termination of patent right or utility model |