CN2896536Y - Anti-brust type lithium-cell lidboard - Google Patents
Anti-brust type lithium-cell lidboard Download PDFInfo
- Publication number
- CN2896536Y CN2896536Y CNU2006201033925U CN200620103392U CN2896536Y CN 2896536 Y CN2896536 Y CN 2896536Y CN U2006201033925 U CNU2006201033925 U CN U2006201033925U CN 200620103392 U CN200620103392 U CN 200620103392U CN 2896536 Y CN2896536 Y CN 2896536Y
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- CN
- China
- Prior art keywords
- explosion
- pressure disc
- rupture pressure
- groove
- safety vent
- 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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- 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
A cover plate for anti-explosion lithium cell includes a base body and security holes provided thereon. Wherein, the security hole is arranged with anti-explosion film. The anti-explosion film and the base body are an integrated and generated structure, and the anti-explosion film is positioned at a certain depth of the security hole. That is, the upper and lower surfaces of the anti-explosion film keep a certain altitude difference to those of the base body. On the surface of the anti-explosion film where is close to the inner wall of the security hole, at least a loop of groove to constitute an anti-explosion fracture circle. The utility model is reasonably designed in anti-explosion structure, to press the anti-explosion film to a certain depth within the security hole. The model is characterized in simple processing requirements and high production efficiency, thereby greatly reducing the production cost. Furthermore, adoption of the groove on the anti-explosion film surface as the anti-explosion fracture circle has the advantages of easy manufacturing, with fracture pressure being stably and precisely controlled.
Description
Technical field: the utility model relates to the cover plate of cover plate, particularly explosion-proof type on a kind of lithium battery housing.
Background technology: many lithium battery housings use explosion-proof type cover plate, releasing pressure automatically when cell internal pressure is too high.General explosion-proof covering board all is to establish a safety vent on matrix, smooth thereon again covering one deck rupture pressure disc, and this version is very high to the requirement of production equipment, complex manufacturing, common equipment at all can't be smooth overlay film, cost is higher, the efficient of production is low.The somebody designs a kind of new construction now, and the attempt secure ram does not dash thoroughly during the hole, reserves thin layer as rupture pressure disc at matrix surface.In fact, the structure that rupture pressure disc is molded over body upper surface or lower surface at all can't suitability for industrialized production, and thickness is uncontrollable, and more crucial be, even mold an even thin layer on matrix, its pressure that breaks also can't maintain accurately stable, does not have practicality at all.
Summary of the invention: at the deficiencies in the prior art, the utility model provides explosion-proof type lithium battery cover plate a kind of rational in infrastructure, convenient for production.
The utility model comprises matrix and safety vent provided thereon, in safety vent, be provided with rupture pressure disc, this rupture pressure disc and matrix are integral type press-stretched molding structure, and rupture pressure disc is positioned at safety vent certain depth place, all there is difference in height on the upper and lower surface that is rupture pressure disc apart from the upper and lower surface of matrix respectively, on the surface of this rupture pressure disc, also be provided with a circle groove at least, constitute explosion-proof fracture circle near the inwall place of safety vent.
Blast resistance construction of the present utility model is reasonable, and the rupture pressure disc press-stretched is molded over certain depth place in the safety vent, and technological requirement is simple, and is highly efficient in productivity, greatly reduces production cost.And it is easy as the production of explosion-proof fracture circle that utilization is located at the lip-deep groove of rupture pressure disc, and fracture pressure can more stable accurate control.
Further specify the utility model below in conjunction with drawings and Examples.
Description of drawings: Fig. 1 is the main structure schematic diagram of embodiment;
Fig. 2 is the A-A cutaway view of Fig. 1;
Fig. 3 is the I portion enlarged drawing of Fig. 2.
Embodiment: as shown in the figure, matrix 1 is provided with safety vent 2, in safety vent 2, be provided with rupture pressure disc 3, this rupture pressure disc 3 and matrix 1 are integral type press-stretched molding structure, and rupture pressure disc 3 is positioned at safety vent 2 certain depth places, and promptly all there is difference in height on the upper and lower surface of rupture pressure disc 3 apart from the upper and lower surface of matrix 1 respectively.On the surface of this rupture pressure disc 3, also be provided with a circle groove 4 at least, constitute explosion-proof fracture circle near the inwall place of safety vent 2.When lithium battery housing internal pressure was too high, rupture pressure disc 3 can break in the fracture of groove 4 places, guarantees safety.
In practice as requested, safety vent 2 may have multiple shape, and as circular, oval, square, runway shape etc., present embodiment adopts runway shape.The groove 4 of present embodiment is located at a side surface of rupture pressure disc 3, is provided with a circle technology depression 5 at the opposite side of rupture pressure disc 3 surface correspondence position, more reasonable structure like this, and the production technology of press-stretched moulding is better.The width of groove 4 generally is not more than 0.1 millimeter, and rupture pressure disc 3 thickness at groove 4 places generally are not more than 0.03 millimeter, and pressure control is more reasonable, safe and reliable like this.
Claims (3)
1, a kind of explosion-proof type lithium battery cover plate, comprise matrix and safety vent provided thereon, in safety vent, be provided with rupture pressure disc, it is characterized by: this rupture pressure disc (3) and matrix (1) are integral type press-stretched molding structure, and rupture pressure disc (3) is positioned at safety vent (2) certain depth place, all there is difference in height on the upper and lower surface that is rupture pressure disc (3) apart from the upper and lower surface of matrix (1) respectively, on the surface of this rupture pressure disc (3), also be provided with a circle groove (4) at least, constitute explosion-proof fracture circle near the inwall place of safety vent (2).
2, explosion-proof type lithium battery cover plate according to claim 1 is characterized by: groove (4) is located at a side surface of rupture pressure disc (3), and correspondence position is provided with a circle technology depression (5) on the opposite side surface of rupture pressure disc (3).
3, explosion-proof type lithium battery cover plate according to claim 1 and 2 is characterized by: the width of groove (4) is not more than 0.1 millimeter, and rupture pressure disc (3) thickness that groove (4) is located is not more than 0.03 millimeter.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2006201033925U CN2896536Y (en) | 2006-05-01 | 2006-05-01 | Anti-brust type lithium-cell lidboard |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2006201033925U CN2896536Y (en) | 2006-05-01 | 2006-05-01 | Anti-brust type lithium-cell lidboard |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2896536Y true CN2896536Y (en) | 2007-05-02 |
Family
ID=38066109
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2006201033925U Expired - Fee Related CN2896536Y (en) | 2006-05-01 | 2006-05-01 | Anti-brust type lithium-cell lidboard |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2896536Y (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103094510A (en) * | 2011-11-03 | 2013-05-08 | 中山天贸电池有限公司 | Lithium ion battery with explosion-proof device and processing method thereof |
| CN103346273A (en) * | 2013-07-10 | 2013-10-09 | 倪志华 | Power lithium battery explosion-proof cover plate |
| CN106129301A (en) * | 2016-07-28 | 2016-11-16 | 宁波震裕科技股份有限公司 | Integrated rupture pressure disc and preparation method thereof on automobile lithium battery top cover |
-
2006
- 2006-05-01 CN CNU2006201033925U patent/CN2896536Y/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103094510A (en) * | 2011-11-03 | 2013-05-08 | 中山天贸电池有限公司 | Lithium ion battery with explosion-proof device and processing method thereof |
| CN103346273A (en) * | 2013-07-10 | 2013-10-09 | 倪志华 | Power lithium battery explosion-proof cover plate |
| CN106129301A (en) * | 2016-07-28 | 2016-11-16 | 宁波震裕科技股份有限公司 | Integrated rupture pressure disc and preparation method thereof on automobile lithium battery top cover |
| CN106129301B (en) * | 2016-07-28 | 2018-11-27 | 宁波震裕科技股份有限公司 | Integrally formed rupture pressure disc and preparation method thereof on automobile lithium battery top cover |
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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: 20070502 Termination date: 20140501 |