CN210349886U - Explosion-proof lithium ion battery cap - Google Patents
Explosion-proof lithium ion battery cap Download PDFInfo
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- CN210349886U CN210349886U CN201920335678.3U CN201920335678U CN210349886U CN 210349886 U CN210349886 U CN 210349886U CN 201920335678 U CN201920335678 U CN 201920335678U CN 210349886 U CN210349886 U CN 210349886U
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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 relates to an explosion-proof lithium ion battery cap, which comprises a sealing ring, be provided with the top cap on the sealing washer, the top cap has the explosion-proof layer, be provided with the PTC piece under the explosion-proof layer, the PTC piece has the welding piece, be equipped with the explosion-proof diaphragm between welding piece and the PTC piece, evenly distributed has sunken circle on the explosion-proof diaphragm, be equipped with the through-hole on welding piece and the PTC piece, the top cap is oval top cap, the explosion-proof layer includes the support fixed bed that bilateral symmetry set up, support and be equipped with the explosion-proof bag of elasticity between the fixed bed. The advantages are that: the design of the oval top cover not only decomposes the pressure, but also forms a cavity layer with the explosion-proof layer, thereby providing an explosion-proof bag bulging space for battery explosion, avoiding the damage of the lithium battery shell and prolonging the service life of the lithium battery shell.
Description
Technical Field
The utility model relates to a lithium ion battery technical field especially relates to an explosion-proof lithium ion battery cap.
Background
Lithium cell block is lithium cell key parts, locate the lithium cell anodal, directly meet with utmost point ear, prior art's lithium cell structure includes the top cap, the sealing washer, the PTC piece, explosion-proof diaphragm, welding piece etc, explosion-proof diaphragm is used for sealed lithium cell, when lithium cell internal pressure is too high, the inside electrolyte of lithium cell comes the pressure release through bursting explosion-proof diaphragm, prevent the battery explosion, explosion-proof diaphragm passes through laser welding with welding piece fixedly, the solder joint of formation is current circulation passageway between explosion-proof diaphragm and the welding piece, resistance is great, it is serious to generate heat when the heavy current passes through.
Therefore, a new technology is required to solve the above technical solution.
SUMMERY OF THE UTILITY MODEL
The utility model aims at: aiming at the defects, the explosion-proof lithium ion battery cap is provided.
In order to achieve the above purpose, the utility model adopts the technical scheme that:
the utility model provides an explosion-proof lithium ion battery cap, includes the sealing washer, be provided with the top cap on the sealing washer, be provided with the explosion-proof layer under the top cap, be provided with the PTC piece under the explosion-proof layer, the PTC piece has the welding piece, be equipped with the explosion-proof diaphragm between welding piece and the PTC piece, evenly distributed has sunken circle on the explosion-proof diaphragm, be equipped with the through-hole on welding piece and the PTC piece.
The top cover is an oval top cover.
The explosion-proof layer comprises supporting and fixing layers which are symmetrically arranged on two sides, and an elastic explosion-proof bag is arranged between the supporting and fixing layers.
Compared with the prior art, the utility model discloses the technological effect who reaches is: the design of the oval top cover not only decomposes the pressure, but also forms a cavity layer with the explosion-proof layer, thereby providing an explosion-proof bag bulging space for battery explosion, avoiding the damage of the lithium battery shell and prolonging the service life of the lithium battery shell.
Drawings
Fig. 1 is a schematic structural diagram of a first embodiment of the present invention.
Detailed Description
The invention will be further described with reference to the following drawings and examples:
the first embodiment is as follows:
as fig. 1, the utility model discloses an explosion-proof lithium ion battery cap, including sealing washer 1, be provided with top cap 2 on the sealing washer 1, top cap 2 has explosion-proof layer 3, be provided with PTC piece 4 under the explosion-proof layer 3, PTC piece 4 has welding piece 5, be equipped with explosion-proof diaphragm 6 between welding piece 5 and the PTC piece 4, evenly distributed has sunken circle 7 on the explosion-proof diaphragm 6, be equipped with through-hole 8 on welding piece 5 and the PTC piece 4.
The top cover 2 is an oval top cover.
The explosion-proof layer 3 comprises supporting and fixing layers 31 symmetrically arranged at two sides, and an elastic explosion-proof bag 32 is arranged between the supporting and fixing layers 31.
Compared with the prior art, the utility model discloses the technological effect who reaches is: the design of the elliptical top cover 2 not only decomposes the pressure, but also forms a cavity layer with the explosion-proof layer 3, thereby providing a bulging space for the explosion of the battery by the explosion-proof bag 6, avoiding the damage of the lithium battery shell and prolonging the service life of the lithium battery shell.
The above embodiments are only for illustrating the technical concept and features of the present invention, and the purpose of the embodiments is to enable people skilled in the art to understand the contents of the present invention and to implement the present invention, which cannot limit the protection scope of the present invention. All equivalent changes and modifications made according to the spirit of the present invention should be covered by the protection scope of the present invention.
Claims (2)
1. The utility model provides an explosion-proof lithium ion battery block, its characterized in that: the anti-explosion cover is characterized by comprising a sealing ring, a top cover is arranged on the sealing ring, an anti-explosion layer is arranged under the top cover, a PTC sheet is arranged under the anti-explosion layer, a welding sheet is arranged under the PTC sheet, an anti-explosion membrane is arranged between the welding sheet and the PTC sheet, concave rings are uniformly distributed on the anti-explosion membrane, through holes are formed in the welding sheet and the PTC sheet, the top cover is an oval top cover, and a cavity layer is formed between the top cover and the anti-explosion layer.
2. An explosion-proof lithium ion battery cap according to claim 1, characterized in that: the explosion-proof layer comprises supporting and fixing layers which are symmetrically arranged on two sides, and an elastic explosion-proof bag is arranged between the supporting and fixing layers.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920335678.3U CN210349886U (en) | 2019-03-17 | 2019-03-17 | Explosion-proof lithium ion battery cap |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920335678.3U CN210349886U (en) | 2019-03-17 | 2019-03-17 | Explosion-proof lithium ion battery cap |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210349886U true CN210349886U (en) | 2020-04-17 |
Family
ID=70172204
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920335678.3U Active CN210349886U (en) | 2019-03-17 | 2019-03-17 | Explosion-proof lithium ion battery cap |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN210349886U (en) |
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2019
- 2019-03-17 CN CN201920335678.3U patent/CN210349886U/en active Active
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Legal Events
| Date | Code | Title | Description |
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| GR01 | Patent grant | ||
| GR01 | Patent grant |