CN202905825U - Lithium battery explosion-proof aluminum cover plate - Google Patents
Lithium battery explosion-proof aluminum cover plate Download PDFInfo
- Publication number
- CN202905825U CN202905825U CN2012203466654U CN201220346665U CN202905825U CN 202905825 U CN202905825 U CN 202905825U CN 2012203466654 U CN2012203466654 U CN 2012203466654U CN 201220346665 U CN201220346665 U CN 201220346665U CN 202905825 U CN202905825 U CN 202905825U
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- China
- Prior art keywords
- lithium battery
- cover plate
- explosion
- proof
- battery explosion
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- Expired - Fee Related
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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 relates to the technical field of lithium battery production, and in particular relates to a lithium battery explosion-proof aluminum cover plate, which comprises an aluminum plate cover provided with an explosion-proof hole, wherein the explosion-proof hole is filled with plastic. According to the utility model, the plastic is arranged at the punching position of the explosion-proof hole by an injection molding or sticking way, and an explosion-proof membrane of the lithium battery and a main carrier are respectively composed of the plastic and aluminum profile; and when the internal pressure or temperature of the lithium battery exceeds a bearing range of a plastic assembly of the battery cover plate, the arranged plastic can be first burst through or melted, thus ensuring that the internal pressure of the battery is released within a safe and reliable range.
Description
Technical field
The utility model relates to the lithium battery production technical field, especially a kind of lithium battery explosion-proof aluminium cover plate.
Technical background
In the actual conditions, lithium battery externally protective circuit malfunctioning or overcharge, cross put, the occasion such as high temperature and innerly produce the danger that all there is blast in partial short-circuit, in order to prevent the lithium battery blast, prior art adopts following methods:
1, in combination plate, is provided with aluminium, Copper Foil, consists of pressure relief safety valve (for example: CN1200199A, CN1138753A, CN2532584Y);
2, adopt Sheet Metal Forming Technology to impact the wound at quarter of certain depth at cover plate or shell, expection reaches the purpose (for example: CN2529389Y, ZL00228154) of explosion under the certain pressure.
Wherein, processing technology, adhesive material and the complex process of method 1 safe aluminium foil, manufacturing cost is high; And method 2 causes reliability low in fact because the precision of the equipment such as the punch press in domestic field, milling machine is difficult to guarantee to carve the consistency of hindering the degree of depth.
Summary of the invention
The utility model proposes a kind of rupture pressure disc and open the high lithium battery explosion-proof aluminium cover plate with explosion prevention function of stability, the characteristics such as manufacturing is easy, technical maturity, required precision is low, processing cost is low that it has are applicable to once or serondary lithium battery.
To achieve these goals, the utility model adopts following technical scheme:
A kind of lithium battery explosion-proof aluminium cover plate, it comprises the aluminium sheet lid that is provided with an explosionproof hole, is marked with plastic cement in the described explosionproof hole.
Preferably, described plastic cement is the plastic cement of PFA homopolymer classification.
Preferably, described lithium battery explosion-proof aluminium cover plate also comprises:
Rivet assembly with a connecting piece engagement;
Be located at the upper-lower seal circle between brace and the rivet assembly.
Preferably, described lithium battery explosion-proof aluminium cover plate also comprises a liquid injection hole.
Owing to having adopted said structure, the utility model is realized at the punching position of explosionproof hole plastic cement being set by injection moulding or bonding method, and the rupture pressure disc of lithium battery and main carrier are comprised of plastic cement and aluminium section bar respectively; When lithium battery interior pressure or temperature surpassed the scope that the battery cover board plastics member bears, set plastic cement can at first be washed open under lower pressure, temperature conditions or melt, and can guarantee to discharge cell internal pressure in safe and reliable scope.
Description of drawings
Fig. 1 is the structural representation of the utility model embodiment;
Fig. 2 is the application structure figure 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.
Shown in Fig. 1-2, a kind of lithium battery explosion-proof aluminium cover plate, it comprises the aluminium sheet lid 2 that is provided with an explosionproof hole 4, is marked with plastic cement in the described explosionproof hole 4; Plastic cement is the plastic cement of PFA homopolymer classification.
Lithium battery explosion-proof aluminium cover plate also comprises: with the rivet assembly 1 of a connecting piece 5 engagements; Be located at the upper-lower seal circle 3 between brace 5 and the rivet assembly 1.Lithium battery explosion-proof aluminium cover plate also comprises a liquid injection hole 6.
Further, the plastic cement of the PFA homopolymer classification that adopts has remarkable chemical resistance, and all corrosion-resistant to all chemicals, its coefficient of friction is minimum in plastics, also has good electrical property, and its electrical insulating property is temperature influence not; The cover plate rivet sealing ring is sentenced injection moulding or bonding method (injecting glue thickness thickness is 0.2-1.0mm) is realized being close to or connecting.
In lithium battery, press or the unexpected increase of internal temperature, when surpassing pressure that the battery cover board plastics member bears or temperature, the plastic cement part can at first be washed open, be out of shape or melt under lower pressure, temperature conditions on the Aluminum cover 2, thereby in reliable and secure scope, discharge cell internal pressure, ensure the safety of life and property.
Realize at the punching position of explosionproof hole 4 plastic cement being set by injection moulding or bonding method, the rupture pressure disc of lithium battery and main carrier are comprised of plastic cement and aluminium section bar respectively; When lithium battery interior pressure or temperature surpassed the scope that the battery cover board plastics member bears, set plastic cement can at first be washed open under lower pressure, temperature conditions or melt, and can guarantee to discharge cell internal pressure in safe and reliable scope.
The above only is preferred embodiment of the present utility model; be not so limit claim 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 the scope of patent protection of the present utility model.
Claims (4)
1. a lithium battery explosion-proof aluminium cover plate is characterized in that, it comprises the aluminium sheet lid (2) that is provided with an explosionproof hole (4), and described explosionproof hole is marked with plastic cement in (4).
2. lithium battery explosion-proof aluminium cover plate as claimed in claim 1 is characterized in that, described plastic cement is the plastic cement of PFA homopolymer classification.
3. lithium battery explosion-proof aluminium cover plate as claimed in claim 1 is characterized in that, described lithium battery explosion-proof aluminium cover plate also comprises:
Rivet assembly (1) with a connecting piece (5) engagement;
Be located at the upper-lower seal circle (3) between brace (5) and the rivet assembly (1).
4. such as the described lithium battery explosion-proof aluminium of one of claim 1-3 cover plate, it is characterized in that, described lithium battery explosion-proof aluminium cover plate also comprises a liquid injection hole (6).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012203466654U CN202905825U (en) | 2012-07-18 | 2012-07-18 | Lithium battery explosion-proof aluminum cover plate |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012203466654U CN202905825U (en) | 2012-07-18 | 2012-07-18 | Lithium battery explosion-proof aluminum cover plate |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202905825U true CN202905825U (en) | 2013-04-24 |
Family
ID=48126454
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012203466654U Expired - Fee Related CN202905825U (en) | 2012-07-18 | 2012-07-18 | Lithium battery explosion-proof aluminum cover plate |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202905825U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2022105140A1 (en) * | 2020-11-19 | 2022-05-27 | 常州瑞德丰精密技术有限公司 | Secondary battery top cover assembly and secondary battery |
-
2012
- 2012-07-18 CN CN2012203466654U patent/CN202905825U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2022105140A1 (en) * | 2020-11-19 | 2022-05-27 | 常州瑞德丰精密技术有限公司 | Secondary battery top cover assembly and secondary battery |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130424 Termination date: 20130718 |