CN213401429U - Lithium battery cover plate with explosion-proof valve - Google Patents
Lithium battery cover plate with explosion-proof valve Download PDFInfo
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- CN213401429U CN213401429U CN202022479692.6U CN202022479692U CN213401429U CN 213401429 U CN213401429 U CN 213401429U CN 202022479692 U CN202022479692 U CN 202022479692U CN 213401429 U CN213401429 U CN 213401429U
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- explosion
- proof valve
- cover plate
- lithium battery
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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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Abstract
The utility model provides a lithium battery cover plate with explosion-proof valve, including the apron body, be provided with explosion-proof valve block on the apron body, explosion-proof valve block forms for the apron body etching, explosion-proof valve block is circular, and circumference department is provided with the nick, and circular explosion-proof valve block is inside to be provided with a plurality of sectorial nicks of circular partition. Explosion-proof valve constitute by alternately the nick, and many mar alternately to circular geometric center for the body explodes from the cross junction of self very easily, thereby has promoted the detonation sensitivity of battery explosion-proof valve.
Description
Technical Field
The utility model relates to a lithium cell production facility technical field, specificly relate to a lithium cell apron with explosion-proof valve.
Background
In the aspect of new energy automobiles, the production capacity of pure electric automobiles and plug-in hybrid electric automobiles reaches 200 thousands, the accumulated output and sales volume exceeds 500 thousands, and the hydrogen energy industry of fuel cell automobiles and automobiles is synchronously developed with the international industry. Once the market of the electric automobile is started in a large scale, the explosion type growth of the lithium battery market is brought. The demand of the power lithium battery is predicted to increase hundreds of times in the future, and the capacity requirement is greatly improved, and the demand is increased from 70.08MWh to 8003.49MWh (note: MWh is milliwatt hour and is the meaning of milliwatt (10^ -3)). Therefore, the popularization and application prospects of the method are better and better.
Lithium batteries can become the industry's direction of development, primarily based on their multiple characteristics. Firstly, it possesses high energy density, the weight of lithium ion battery is half of that of nickel-cadmium or nickel-hydrogen battery with same capacity, and its volume is 40-50% of that of nickel-cadmium. 20-30% of nickel-hydrogen, and can realize high voltage, wherein the working voltage of a lithium ion battery unit is 3.7v (average value), which is equivalent to three serial nickel-cadmium or nickel-hydrogen batteries; meanwhile, the physical lithium ion battery of the lithium battery does not contain cadmium, lead and mercury, and is regarded as a pollution-free battery.
With the continuous improvement of the battery capacity, the explosion power of the battery is highlighted, and the explosion of the battery can cause personal injury and fire, thereby causing great loss to the state and the property of people.
The lithium ion battery shell processing is a labor intensive industry, a lithium battery cover plate continuous die is developed, the yield is high, the product stability is good, and the number of workers is small.
Therefore, the development of the lithium battery cover plate has the technical advance advantages.
Lithium battery cover explosion-proof valve annotates liquid hole special requirement, and explosion-proof pressure value is related to explosion-proof valve's incomplete thick, and incomplete thick unstability influences the pressure value and fluctuates, and the pressure value is unstable can lead to the lithium cell explosion.
SUMMERY OF THE UTILITY MODEL
The utility model aims to solve the technical problem that the problem that exists among the prior art is overcome, a lithium battery cover plate with explosion-proof valve is provided.
In order to solve the above problems, the technical solution of the present invention is as follows:
the utility model provides a lithium battery cover plate with explosion-proof valve, includes the apron body, is provided with the explosion-proof valve block on the apron body, the explosion-proof valve block is formed for the apron body etching, the explosion-proof valve block is circular, and circumference department is provided with the nick, and circular explosion-proof valve block is inside to be provided with a plurality of sectorial nicks of circular partition.
The circle is equally divided into a plurality of fan-shaped nicks, namely cross nicks, and the cross nicks equally divide the circle into four parts.
The scoring depth of the circular divided into a plurality of sectors is more than or equal to the scoring at the circumference.
The cross nicks are formed in such a way that the nick depth is gradually reduced from the cross to the circumference, the nicks at the cross are deepest, and the nicks at the circumference are shallowest.
And small vent holes are formed at the crossed positions.
Beneficial effect, explosion-proof valve constitute by alternately nick, and many mar are alternately to circular geometric center for the body explodes from the cross junction of self very easily, thereby has promoted the detonation sensitivity of battery explosion-proof valve.
Drawings
The present invention will be described in detail with reference to the accompanying drawings and specific embodiments;
fig. 1 is a schematic structural view of the explosion-proof valve of the present invention.
Detailed Description
In order to make the technical means, creation features, achievement purposes and functions of the present invention easy to understand and understand, the present invention is further explained by combining with the specific drawings.
Referring to fig. 1, a lithium battery cover plate with an explosion-proof valve comprises a cover plate body 1, wherein an explosion-proof valve block 2 is arranged on the cover plate body, the explosion-proof valve block is formed by etching the cover plate body, the explosion-proof valve block is circular, notches 21 are formed in the circumference of the explosion-proof valve block, and notches which divide the circular shape into a plurality of sectors are formed in the circular explosion-proof valve block.
The circle is equally divided into a plurality of fan-shaped nicks, namely a cross nick 22 which equally divides the circle into four parts.
The scoring depth of the circular divided into a plurality of sectors is more than or equal to the scoring at the circumference.
The cross nicks are formed in such a way that the nick depth is gradually reduced from the cross to the circumference, the nicks at the cross are deepest, and the nicks at the circumference are shallowest. When the explosion is carried out, the center of the cross is exploded and extends to the circumference, and the pressure can be quickly released.
Further, a small vent hole (not shown) is arranged at the cross.
Explosion-proof valve constitute by alternately the nick, and many mar alternately to circular geometric center for the body explodes from the cross junction of self very easily, thereby has promoted the detonation sensitivity of battery explosion-proof valve.
The foregoing shows and describes the general principles, essential features, and advantages of the invention. It will be understood by those skilled in the art that the present invention is not limited to the above embodiments, and that the foregoing embodiments and descriptions are provided only to illustrate the principles of the present invention without departing from the spirit and scope of the present invention. The scope of the invention is defined by the appended claims and equivalents thereof.
Claims (5)
1. The utility model provides a lithium battery cover plate with explosion-proof valve, includes the apron body, is provided with explosion-proof valve block on the apron body, explosion-proof valve block is formed for the apron body etching, characterized by, explosion-proof valve block is circular, and circumference department is provided with the nick, and circular explosion-proof valve block is inside to be provided with a plurality of sectorial nicks of circular partition.
2. The lithium battery cover plate with the explosion-proof valve as claimed in claim 1, wherein the cut dividing the circle into a plurality of sectors is a cross cut dividing the circle into four equal parts.
3. The lithium battery cover plate with the explosion-proof valve as claimed in claim 1, wherein the depth of the nicks dividing the circle into a plurality of sectors is greater than or equal to the nicks at the circumference.
4. The lithium battery cover plate with the explosion-proof valve as claimed in claim 2, wherein the cross-shaped nicks are gradually reduced in depth from the cross to the circumference, the nicks at the cross are deepest, and the nicks at the circumference are shallowest.
5. The lithium battery cover plate with the explosion-proof valve as claimed in claim 2, wherein the crisscross is provided with a small vent hole.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022479692.6U CN213401429U (en) | 2020-10-30 | 2020-10-30 | Lithium battery cover plate with explosion-proof valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022479692.6U CN213401429U (en) | 2020-10-30 | 2020-10-30 | Lithium battery cover plate with explosion-proof valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN213401429U true CN213401429U (en) | 2021-06-08 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202022479692.6U Active CN213401429U (en) | 2020-10-30 | 2020-10-30 | Lithium battery cover plate with explosion-proof valve |
Country Status (1)
| Country | Link |
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| CN (1) | CN213401429U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113871788A (en) * | 2021-09-29 | 2021-12-31 | 苏州东博精密制造有限公司 | Laser integrated power battery explosion-proof valve and manufacturing method thereof |
| WO2023103353A1 (en) * | 2021-12-06 | 2023-06-15 | 珠海冠宇电池股份有限公司 | Housing structure and battery |
| CN117691296A (en) * | 2024-02-04 | 2024-03-12 | 蜂巢能源科技股份有限公司 | Battery cell and battery pack |
-
2020
- 2020-10-30 CN CN202022479692.6U patent/CN213401429U/en active Active
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113871788A (en) * | 2021-09-29 | 2021-12-31 | 苏州东博精密制造有限公司 | Laser integrated power battery explosion-proof valve and manufacturing method thereof |
| WO2023103353A1 (en) * | 2021-12-06 | 2023-06-15 | 珠海冠宇电池股份有限公司 | Housing structure and battery |
| CN117691296A (en) * | 2024-02-04 | 2024-03-12 | 蜂巢能源科技股份有限公司 | Battery cell and battery pack |
| CN117691296B (en) * | 2024-02-04 | 2024-04-19 | 蜂巢能源科技股份有限公司 | Battery cell and battery pack |
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