CN213878225U - Explosion-proof cover plate of lithium battery - Google Patents
Explosion-proof cover plate of lithium battery Download PDFInfo
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- CN213878225U CN213878225U CN202022525781.XU CN202022525781U CN213878225U CN 213878225 U CN213878225 U CN 213878225U CN 202022525781 U CN202022525781 U CN 202022525781U CN 213878225 U CN213878225 U CN 213878225U
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- cover plate
- explosion
- proof
- insulating frame
- 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 discloses an explosion-proof apron of lithium cell, include: apron, anodal utmost point post, negative pole utmost point post, positive sealing washer, negative pole sealing washer and rubber coating insulating frame, anodal utmost point post and negative pole utmost point post set up both ends about the apron respectively, positive sealing washer sets up between anodal utmost point post and apron, the negative pole sealing washer sets up between negative pole utmost point post and apron, anodal utmost point post and negative pole utmost point post upper end all overlap and are equipped with rubber coating insulating frame, the lower extreme and the apron contact of rubber coating insulating frame, be formed with the boss on the apron just the boss sets up the lower extreme of rubber coating insulating frame and the one side of apron contact position. In this way, the utility model provides an explosion-proof apron of lithium cell, simple structure, it is practical convenient, and practice thrift the cost.
Description
Technical Field
The utility model relates to a lithium cell apron field especially relates to an explosion-proof apron of lithium cell.
Background
The lithium battery has the advantages of high voltage, long service life, high energy density, portability and the like, the application field of the lithium battery is continuously enlarged, but the safety performance of the lithium battery is poorer than that of other secondary batteries, when the power lithium battery is overcharged, the materials such as the internal electrolyte and the like can be cracked to generate gas, so that the battery shell is expanded and broken, oxygen enters to react with lithium ions accumulated on the surface of a negative electrode, and then the explosion occurs. The existing cover plate for the lithium battery shell is complex in structure and high in manufacturing cost.
SUMMERY OF THE UTILITY MODEL
The utility model discloses the main technical problem who solves provides an explosion-proof apron of lithium cell to solve the problem that exists among the background art.
In order to solve the technical problem, the utility model discloses a technical scheme be: provided is an explosion-proof cover plate for a lithium battery, including: the rubber-coated insulating frame comprises a cover plate, an anode pole, a cathode pole, an anode sealing ring, a cathode sealing ring and a rubber-coated insulating frame, wherein the anode pole and the cathode pole are respectively arranged at the left end and the right end of the cover plate, the anode sealing ring is arranged between the anode pole and the cover plate, the cathode sealing ring is arranged between the cathode pole and the cover plate, the rubber-coated insulating frame is sleeved at the upper ends of the anode pole and the cathode pole, the lower end of the rubber-coated insulating frame is in contact with the cover plate, a boss is formed on the cover plate and is arranged at one side of the lower end of the rubber-coated insulating frame and the contact position of the cover plate, and when the anode pole and the cathode pole which are sleeved with the rubber-coated insulating frame are installed on the cover plate, the boss is turned inwards to rivet and fix the lower end of the rubber-coated insulating frame and the cover plate.
In a preferred embodiment of the present invention, the explosion-proof cover plate of lithium battery further comprises a positive connection plate and a negative connection plate, the positive connection plate is welded on the lower surface of the positive electrode pole by laser, and the negative connection plate is welded on the lower surface of the negative electrode pole by laser.
In a preferred embodiment of the present invention, the positive connecting piece is made of aluminum, and the negative connecting piece is made of red copper.
In a preferred embodiment of the present invention, the frame of the rubber-coated insulating frame is an aluminum frame, and the PPS rubber coating is applied to the periphery of the aluminum frame.
In a preferred embodiment of the present invention, the cover plate is connected with a lower fixing bracket at the back side, the lower surface of the lower fixing bracket is provided with a plurality of surface cover clamping grooves, and the surface cover clamping grooves are connected with surface covers.
In a preferred embodiment of the present invention, the cover plate is provided with a liquid injection hole.
In a preferred embodiment of the present invention, an explosion-proof membrane is disposed in the middle of the cover plate, an explosion-proof membrane protection film is attached on the top of the explosion-proof membrane, and a central vent hole is formed on the explosion-proof membrane protection film.
In a preferred embodiment of the present invention, the material of the positive electrode post, the negative electrode post and the cover plate is aluminum.
In a preferred embodiment of the present invention, the positive sealing ring and the negative sealing ring are made of fluororubber, epdm or PFA.
The utility model has the advantages that: the utility model provides an explosion-proof apron of lithium cell, simple structure, it is practical convenient, when the cover has anodal utmost point post and negative pole post installation on the apron of rubber coating insulating frame, it is right the boss inwards turns up the lower extreme and the apron riveting of the insulating frame of glue, and this fixed mode replaces laser welding or ultrasonic bonding, effectively practices thrift the cost.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings used in the description of the embodiments are briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained without inventive work, wherein:
fig. 1 is a schematic structural diagram of a preferred embodiment of an explosion-proof cover plate for a lithium battery according to the present invention;
fig. 2 is an exploded view of a preferred embodiment of an explosion-proof cover plate for a lithium battery according to the present invention;
fig. 3 is a top view of a preferred embodiment of an explosion-proof cover plate for a lithium battery according to the present invention;
fig. 4 is a bottom view of a preferred embodiment of an explosion-proof cover plate for a lithium battery according to the present invention.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely below, and it should be apparent that the described embodiments are only some embodiments of the present invention, but not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.
Referring to fig. 1-4, an embodiment of the present invention includes:
an explosion-proof cover plate for a lithium battery, comprising: the cover plate comprises a cover plate 1, an anode pole 2, a cathode pole 3, an anode sealing ring 4, a cathode sealing ring 5 and a rubber-coated insulating frame 6.
The positive pole post 2 and the negative pole post 3 are respectively arranged at the left end and the right end of the cover plate 1, the positive sealing ring 4 is arranged between the positive pole post 2 and the cover plate 1, the negative sealing ring 5 is arranged between the negative pole post 3 and the cover plate 1, and the upper ends of the positive pole post 2 and the negative pole post 3 are respectively sleeved with the rubber-coated insulating frame 6. The framework of the encapsulation insulating frame 6 is an aluminum framework, and the periphery of the aluminum framework is encapsulated by PPS.
The lower end of the rubber-coated insulating frame 6 is in contact with the cover plate 1, a boss 7 is formed on the cover plate 1, the boss 7 is arranged on one side of the contact position of the lower end of the rubber-coated insulating frame 6 and the cover plate 1, and when the positive pole post 2 and the negative pole post 3 sleeved with the rubber-coated insulating frame 6 are installed on the cover plate 1, the boss 7 is turned inwards to fix the lower end of the rubber-coated insulating frame 6 and the cover plate 1 in a riveting mode. The surface of the boss 7 after flanging is flush with the surface of the cover plate 1.
The lithium battery explosion-proof cover plate further comprises a positive connecting piece 8 and a negative connecting piece 9, the positive connecting piece 8 is welded on the lower surface of the positive pole column 2 through laser, the negative connecting piece 9 is welded on the lower surface of the negative pole column 3 through laser, the positive connecting piece 2 is made of aluminum, and the negative connecting piece 3 is made of red copper.
The back of the cover plate 1 is connected with a lower fixing support 10, the lower surface of the lower fixing support 10 is provided with a plurality of surface cover clamping grooves 11, and surface covers 12 are connected to the surface cover clamping grooves 11.
And the cover plate 1 is provided with a liquid injection hole 13, and the liquid injection hole 13 is mainly used for injecting electrolyte of a lithium battery.
Be provided with rupture membrane 14 in the middle of apron 1, rupture membrane 14 top is pasted rupture membrane protection pad pasting 15, the central exhaust hole has been seted up on rupture membrane protection pad pasting 15, has better explosion-proof performance, and the security is high, the explosion phenomenon when can avoiding the lithium cell overcharge.
The anode post 2, the cathode post 3 and the cover plate 1 are all made of aluminum.
The positive sealing ring 4 and the negative sealing ring 5 are made of fluororubber, ethylene propylene diene monomer or PFA, and can be replaced according to product requirements.
To sum up, the utility model discloses an explosion-proof apron of lithium cell, simple structure, practical convenient when the cover has anodal utmost point post and negative pole post installation on the apron of rubber coating insulating frame, it is right the boss inwards turns up the lower extreme and the apron riveting of the insulating frame of rubber coating fixed, and this fixed mode replaces laser welding or ultrasonic bonding, effectively practices thrift the cost.
The above only is the embodiment of the present invention, not limiting the patent scope of the present invention, all of which utilize the equivalent structure or equivalent flow transformation made by the content of the specification of the present invention, or directly or indirectly applied to other related technical fields, all included in the same way in the patent protection scope of the present invention.
Claims (9)
1. An explosion-proof apron of lithium cell characterized in that includes: the rubber-coated insulating frame comprises a cover plate, an anode pole, a cathode pole, an anode sealing ring, a cathode sealing ring and a rubber-coated insulating frame, wherein the anode pole and the cathode pole are respectively arranged at the left end and the right end of the cover plate, the anode sealing ring is arranged between the anode pole and the cover plate, the cathode sealing ring is arranged between the cathode pole and the cover plate, the rubber-coated insulating frame is sleeved at the upper ends of the anode pole and the cathode pole, the lower end of the rubber-coated insulating frame is in contact with the cover plate, a boss is formed on the cover plate and is arranged at one side of the lower end of the rubber-coated insulating frame and the contact position of the cover plate, and when the anode pole and the cathode pole which are sleeved with the rubber-coated insulating frame are installed on the cover plate, the boss is turned inwards to rivet and fix the lower end of the rubber-coated insulating frame and the cover plate.
2. The explosion-proof cover plate of lithium battery of claim 1, further comprising a positive connecting sheet and a negative connecting sheet, wherein the positive connecting sheet is welded on the lower surface of the positive pole post by laser, and the negative connecting sheet is welded on the lower surface of the negative pole post by laser.
3. The explosion-proof cover plate of lithium battery as claimed in claim 2, wherein the positive connecting piece is made of aluminum, and the negative connecting piece is made of red copper.
4. The explosion-proof cover plate for the lithium battery as claimed in claim 1, wherein the skeleton of the encapsulated insulating frame is an aluminum skeleton, and the periphery of the aluminum skeleton is encapsulated by PPS.
5. The explosion-proof cover plate of a lithium battery as claimed in claim 1, wherein a lower fixing bracket is connected to the back surface of the cover plate, a plurality of surface cover clamping grooves are formed in the lower surface of the lower fixing bracket, and a surface cover is connected to the surface cover clamping grooves.
6. The explosion-proof cover plate for a lithium battery as claimed in claim 1, wherein the cover plate is provided with a liquid injection hole.
7. The explosion-proof cover plate for the lithium battery as claimed in claim 1, wherein an explosion-proof film is arranged in the middle of the cover plate, an explosion-proof film protection adhesive film is adhered on the explosion-proof film, and a central vent hole is formed in the explosion-proof film protection adhesive film.
8. The explosion-proof cover plate for a lithium battery as claimed in claim 1, wherein the positive electrode post, the negative electrode post and the cover plate are all made of aluminum.
9. The explosion-proof cover plate of a lithium battery as claimed in claim 1, wherein the positive sealing ring and the negative sealing ring are made of fluororubber, ethylene propylene diene monomer or PFA.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022525781.XU CN213878225U (en) | 2020-11-05 | 2020-11-05 | Explosion-proof cover plate of lithium battery |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022525781.XU CN213878225U (en) | 2020-11-05 | 2020-11-05 | Explosion-proof cover plate of lithium battery |
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| Publication Number | Publication Date |
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| CN213878225U true CN213878225U (en) | 2021-08-03 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202022525781.XU Active CN213878225U (en) | 2020-11-05 | 2020-11-05 | Explosion-proof cover plate of lithium battery |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113594592A (en) * | 2021-08-24 | 2021-11-02 | 惠州市思洋科技有限公司 | Novel cylindrical battery buckle cover assembly |
-
2020
- 2020-11-05 CN CN202022525781.XU patent/CN213878225U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113594592A (en) * | 2021-08-24 | 2021-11-02 | 惠州市思洋科技有限公司 | Novel cylindrical battery buckle cover assembly |
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