CN214898625U - Cylindrical battery cap assembly structure - Google Patents
Cylindrical battery cap assembly structure Download PDFInfo
- Publication number
- CN214898625U CN214898625U CN202121318695.XU CN202121318695U CN214898625U CN 214898625 U CN214898625 U CN 214898625U CN 202121318695 U CN202121318695 U CN 202121318695U CN 214898625 U CN214898625 U CN 214898625U
- Authority
- CN
- China
- Prior art keywords
- explosion
- proof valve
- insulating pad
- cover plate
- exhaust hole
- 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.)
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Links
- 239000007788 liquid Substances 0.000 claims abstract description 11
- 239000003292 glue Substances 0.000 claims description 6
- 238000003466 welding Methods 0.000 claims description 5
- 229910000838 Al alloy Inorganic materials 0.000 claims description 3
- 238000002347 injection Methods 0.000 abstract description 8
- 239000007924 injection Substances 0.000 abstract description 8
- 238000004519 manufacturing process Methods 0.000 abstract description 7
- 238000000034 method Methods 0.000 description 6
- 238000007789 sealing Methods 0.000 description 5
- 230000015572 biosynthetic process Effects 0.000 description 4
- 239000000178 monomer Substances 0.000 description 3
- 230000007547 defect Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005538 encapsulation Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 238000004804 winding Methods 0.000 description 1
Images
Classifications
-
- 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
Landscapes
- Gas Exhaust Devices For Batteries (AREA)
- Sealing Battery Cases Or Jackets (AREA)
Abstract
The utility model relates to a cylindrical battery cap component structure, which comprises a cover plate, an insulating pad and an explosion-proof valve, wherein the lower part of the insulating pad is provided with an insulating pad step, the cover plate is glued on the upper side of the insulating pad step, the cover plate is radially provided with an exhaust hole as a liquid injection hole, the middle part of the cover plate is provided with an explosion-proof valve fixing step, the explosion-proof valve fixing step is arranged on the upper side of the exhaust hole, the explosion-proof valve is welded on the upper side of the explosion-proof valve fixing step by laser, and the exhaust hole and the liquid injection hole are simultaneously used as the structural opening of the explosion-proof valve; the utility model provides a pair of cylinder battery cap subassembly structure has simple structure reasonable, the cost of manufacture is low, be convenient for exhaust, can prolong battery life's advantage.
Description
Technical Field
The utility model relates to a battery technology field, concretely relates to cylinder battery cap subassembly structure.
Background
The 18650/21700 series cylindrical battery CAP structure usually has five pieces (Vent, CAP, CID, PTC, GASKET), but with the gradual increase of monomer capacity, the defect of the conventional five pieces gradually appears, five pieces have no exhaust structure, when the monomer capacity is smaller, the exhaust amount is not so obvious, but 32 and 46 series cylindrical battery cores, the monomer capacity has reached more than 20Ah, if the exhaust structure is not made, the gas generated by formation after liquid injection encapsulation can not be exhausted, bringing great hidden trouble to the life and safety of the battery; therefore, the utility model relates to a simple structure is reasonable, the cost of manufacture is low, be convenient for exhaust, can prolong battery life's a cylinder battery cap subassembly structure is very necessary.
Disclosure of Invention
The utility model aims at overcoming the defects of the prior art, and providing a cylindrical battery cap component structure which has simple and reasonable structure, low manufacturing cost, convenient exhaust and prolonged battery life.
The purpose of the utility model is realized like this: the utility model provides a cylinder battery cap subassembly structure, it includes apron, insulating pad and explosion-proof valve, the lower part of insulating pad is provided with insulating pad step, the apron glue joint the upside of insulating pad step, the apron radially set up the exhaust hole, the exhaust hole is as annotating the liquid hole, the middle part of apron is provided with the fixed step of explosion-proof valve, the fixed step setting of explosion-proof valve is in the upside in exhaust hole, explosion-proof valve laser welding in the upside of the fixed step of explosion-proof valve, the exhaust hole is regarded as with annotating the liquid hole the explosion-proof valve structure trompil of explosion-proof valve.
The cover plate is made of aluminum alloy plates, the insulating pad is made of plastic, and the outer periphery of the cover plate is tightly connected with the inner periphery of the insulating pad.
The periphery of the cover plate is of a sunken step structure.
The utility model has the advantages that: the utility model adopts the cover plate, the insulating pad and the explosion-proof valve, has simple structure and reduces the manufacturing cost; the cover plate is placed at the insulating pad step in the insulating pad, and before the cover plate is placed, the insulating pad step is coated with glue to play a role in fixing and sealing; after the roll core is assembled, injected and formed, the explosion-proof valve is placed at the explosion-proof valve fixing step at the top of the injection hole and is fixed through laser welding, and the exhaust hole of the utility model is simultaneously used as the injection hole and the structural opening of the explosion-proof valve, so that the gas generated after formation can be smoothly discharged out of the battery through the exhaust hole; the utility model relates to a cylinder battery cap subassembly structure has that simple structure is reasonable, the cost of manufacture is low, be convenient for exhaust, can prolong battery life's advantage.
Drawings
Fig. 1 is a schematic structural diagram of a structure of a cylindrical battery cap assembly of the present invention.
Fig. 2 is an exploded schematic view of the structure of the cylindrical battery cap assembly of the present invention.
Fig. 3 is a cross-sectional view of a structure of a cylindrical battery cap assembly according to the present invention.
In the figure 1, an insulating pad 11, an insulating pad step 2, a cover plate 21, an exhaust hole 22, an explosion-proof valve fixing step 3 and an explosion-proof valve.
Detailed Description
The present invention will be further described with reference to the accompanying drawings.
As shown in fig. 1-3, a cylinder battery cap subassembly structure, it includes apron 2, insulating pad 1 and explosion-proof valve 3, the lower part of insulating pad 1 is provided with insulating pad step 11, apron 2 splice be in the upside of insulating pad step 11, apron 2 radially set up exhaust hole 21, exhaust hole 21 is as annotating the liquid hole, the middle part of apron 2 is provided with explosion-proof valve fixed step 22, explosion-proof valve fixed step 22 sets up the upside of exhaust hole 21, explosion-proof valve 3 laser welding the upside of explosion-proof valve fixed step 22, exhaust hole 21 and notes liquid hole conduct explosion-proof valve structure trompil of explosion-proof valve 3.
Specifically, the cover plate 2 is made of an aluminum alloy plate, the insulating pad 1 is made of plastic, and the outer periphery of the cover plate 2 is tightly connected with the inner periphery of the insulating pad 1, so that the sealing effect is guaranteed.
Specifically, the outer periphery of the cover plate 2 is of a sunken step structure.
The specific implementation manner of the utility model is as follows: before assembling the cap, glue is coated on the insulating pad step 11 at the insulating pad 1 along the circumference, then the cover plate 2 is fixed on the insulating pad step 11, and the glue has the functions of fixing and sealing, so that the whole cylindrical battery is ensured to be well sealed and does not leak liquid; after the cover plate 2 is fixed, the explosion-proof valve is not installed at the moment, the insulating pad 1 and the cover plate 2 are integrally placed into the cylindrical battery shell, then the shell and the cap are fixedly connected through a sealing process, and after a series of processes such as liquid injection and formation, the explosion-proof valve 3 is fixed to the explosion-proof valve fixing step 22 at the cover plate 2 in the cap assembly, so far, the cylindrical battery is manufactured.
The utility model adopts the cover plate 2, the insulating pad 1 and the explosion-proof valve 3, the structure is simple, and the manufacturing cost is reduced; the cover plate 2 is placed at an insulating pad step 11 in the insulating pad 1, and before the cover plate is placed, glue is coated on the insulating pad step 11 to play a role in fixing and sealing; after the winding core is assembled, injected and formed, the explosion-proof valve 3 is placed at the explosion-proof valve fixing step 22 at the top of the injection hole and fixed through laser welding, and the exhaust hole 21 is simultaneously used as the injection hole and the structural opening of the explosion-proof valve, so that gas generated after formation can be smoothly exhausted out of the battery through the exhaust hole 21; the utility model relates to a cylinder battery cap subassembly structure has that simple structure is reasonable, the cost of manufacture is low, be convenient for exhaust, can prolong battery life's advantage.
It should be noted that, in this document, terms such as "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.
Although two embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes may be made in these embodiments, modifications, substitutions and combinations without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (3)
1. The utility model provides a cylinder battery cap subassembly structure, it includes apron, insulating pad and explosion-proof valve, its characterized in that: the lower part of insulating pad is provided with insulating pad step, the apron glue joint the upside of insulating pad step, the apron radially set up the exhaust hole, the exhaust hole is as annotating the liquid hole, the middle part of apron is provided with the fixed step of explosion-proof valve, the fixed step setting of explosion-proof valve is in the upside in exhaust hole, explosion-proof valve laser welding in the upside of the fixed step of explosion-proof valve, the exhaust hole with annotate the liquid hole conduct the explosion-proof valve structure trompil of explosion-proof valve.
2. The cylindrical battery cap assembly structure according to claim 1, wherein: the cover plate is made of aluminum alloy plates, the insulating pad is made of plastic, and the outer periphery of the cover plate is tightly connected with the inner periphery of the insulating pad.
3. The cylindrical battery cap assembly structure according to claim 1, wherein: the periphery of the cover plate is of a sunken step structure.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121318695.XU CN214898625U (en) | 2021-06-15 | 2021-06-15 | Cylindrical battery cap assembly structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121318695.XU CN214898625U (en) | 2021-06-15 | 2021-06-15 | Cylindrical battery cap assembly structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN214898625U true CN214898625U (en) | 2021-11-26 |
Family
ID=78933538
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202121318695.XU Active CN214898625U (en) | 2021-06-15 | 2021-06-15 | Cylindrical battery cap assembly structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN214898625U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2023151321A1 (en) * | 2022-02-10 | 2023-08-17 | 湖北亿纬动力有限公司 | Explosion-proof valve, battery cover, and battery |
-
2021
- 2021-06-15 CN CN202121318695.XU patent/CN214898625U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2023151321A1 (en) * | 2022-02-10 | 2023-08-17 | 湖北亿纬动力有限公司 | Explosion-proof valve, battery cover, and battery |
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