CN114497839A - Integral type lithium cell top cap piece - Google Patents
Integral type lithium cell top cap piece Download PDFInfo
- Publication number
- CN114497839A CN114497839A CN202210311065.2A CN202210311065A CN114497839A CN 114497839 A CN114497839 A CN 114497839A CN 202210311065 A CN202210311065 A CN 202210311065A CN 114497839 A CN114497839 A CN 114497839A
- Authority
- CN
- China
- Prior art keywords
- electrode
- hole
- cover plate
- plate main
- sealing
- 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.)
- Pending
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Classifications
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
- H01M50/10—Primary casings, jackets or wrappings of a single cell or a single battery
- H01M50/183—Sealing members
- H01M50/184—Sealing members characterised by their shape or structure
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/05—Accumulators with non-aqueous electrolyte
- H01M10/052—Li-accumulators
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
- H01M50/10—Primary casings, jackets or wrappings of a single cell or a single battery
- H01M50/147—Lids or covers
- H01M50/148—Lids or covers characterised by their shape
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
- H01M50/10—Primary casings, jackets or wrappings of a single cell or a single battery
- H01M50/183—Sealing members
- H01M50/186—Sealing members characterised by the disposition of the sealing members
Abstract
The utility model provides an integral type lithium cell top cap piece, is including the cover plate main part that is equipped with two electrode through-holes, still is equipped with in the cover plate main part and annotates the liquid hole, and two electrode through-holes all are the step through-hole, and the edge of each electrode through-hole all integrated into one piece is equipped with the annular of epirelief and embraces the circle, and the annular is embraced and is embraced the circle and can be enstrophed formation electrode seal and not have welded structure. The invention has reasonable structure, the edge of the electrode through hole is integrally formed with the raised annular clamping ring, during production and assembly, the annular clamping ring can be turned inwards to tightly press the electrode components such as the insulating ring, the electrode pressing plate, the sealing washer and the like in the electrode through hole for sealing and matching without any welding, the assembly process is simplified, the production efficiency is improved, the deformation and the shrinkage of the sealing and matching structure are very small even under severe working condition temperature change, the risk of liquid leakage caused by fracture is avoided, and the safety and the reliability of the sealing structure are greatly improved.
Description
The technical field is as follows: the invention relates to a lithium battery accessory, in particular to a top cover plate of a lithium battery.
Background art: in order to make full use of the shell space of the lithium battery as much as possible, electrode components such as an electrode pressing plate and an insulating ring can be generally designed and assembled on the top cover plate, and the occupied shell space below the top cover plate is reduced. Generally, the sealing structures of the top cover plate and each electrode assembly are realized by means of a welding process and a high-strength plastic part, the requirements of an assembly process are high, production is troublesome, the sealing structures can deform and break when the working condition temperature changes violently, the battery shell has a leakage risk, and the safety and reliability are still to be improved.
The invention content is as follows: aiming at the defects of the prior art, the invention provides the integrated lithium battery top cover plate with high sealing reliability.
The electrode sealing cover plate comprises a cover plate main body provided with two electrode through holes, wherein the cover plate main body is also provided with a liquid injection hole, the two electrode through holes are step through holes, the edge of each electrode through hole is integrally formed with an upwards-convex annular clamping ring, and the annular clamping rings can be inwards turned to form an electrode sealing non-welding structure.
Furthermore, a plurality of process notches are distributed on the upper edge of the annular holding ring, so that the extrusion wrinkles can be avoided during inward turning.
The invention has reasonable structure, the edge of the electrode through hole is integrally formed with the convex annular clamping ring, during production and assembly, the annular clamping ring can be turned inwards to tightly press the electrode components such as the insulating ring, the electrode pressing plate, the sealing washer and the like in the electrode through hole for sealing and matching without any welding, the assembly process is simplified, the production efficiency is improved, the deformation and the scaling quantity of the sealing and matching structure are very small even when the working condition temperature changes violently, the risk of liquid leakage due to cracking is avoided, and the safety and the reliability of the sealing structure are greatly improved.
The invention is further described with reference to the following figures and detailed description.
Description of the drawings: fig. 1 is a schematic perspective view of the embodiment.
Fig. 2 is a front view of the embodiment.
Fig. 3 is a schematic sectional view taken along line a-a of fig. 2.
Fig. 4 is a rear view of fig. 2.
Fig. 5 is an enlarged schematic view of a portion B of fig. 3.
The specific implementation mode is as follows: as shown in figures 1 to 4, two electrode through holes 2 are arranged on a cover plate main body 1, a liquid injection hole 4 is also arranged on the cover plate main body 1, and an explosion-proof valve hole 8 is also arranged at the middle part of the cover plate main body 1. The two electrode through holes 2 are step through holes, the edge of each electrode through hole 2 is integrally formed with an upward convex annular clamping ring 3, and the annular clamping rings 3 can be turned inwards to form an electrode sealing welding-free structure. Generally, a plurality of process notches 5 are distributed on the upper edge of the annular clamping ring 3, so that the annular clamping ring 3 can be prevented from being extruded and folded when being turned inwards.
In the present embodiment, as shown in fig. 5, a plurality of corrugation indents 7 are provided at the upper surface of the step inside the electrode through-hole 2, and the existence of the corrugation indents 7 enables more sufficient and reliable contact with the surface of the electrode assembly at the time of assembly, and the sealing performance is stronger.
The lower surface of the cover plate main body 1 is provided with a plurality of buckling legs 6, and each buckling leg 6 and the cover plate main body 1 are of an integrated structure. During production and assembly, the buckling feet 6 can be connected with components such as a lower insulating pad of the battery, riveting and welding are not needed for the connecting structure, a special tool is not needed during assembly, and the overall assembly efficiency of the top cover plate of the lithium battery is improved.
Claims (5)
1. The utility model provides an integral type lithium cell top cap piece, is including the cover plate main part that is equipped with two electrode through-holes, still is equipped with on the cover plate main part and annotates liquid hole, characterized in that: the two electrode through holes (2) are step through holes, the edge of each electrode through hole (2) is integrally formed with an upward convex annular clamping ring (3), and the annular clamping rings (3) can be turned inwards to form an electrode sealing welding-free structure.
2. The integrated lithium battery top cover sheet according to claim 1, wherein: a plurality of process notches (5) are distributed on the upper edge of the annular clasping ring (3).
3. The integrated lithium battery top cover sheet according to claim 1 or 2, wherein: the lower surface of the cover plate main body (1) is provided with a plurality of buckling feet (6), and each buckling foot (6) and the cover plate main body (1) are of an integrally formed structure.
4. The integrated lithium battery top cover sheet according to claim 1 or 2, wherein: a plurality of corrugated dents (7) are arranged on the upper surface of the step in the electrode through hole (2).
5. The integrated lithium battery top cover sheet according to claim 3, wherein: a plurality of corrugated dents (7) are arranged on the upper surface of the step in the electrode through hole (2).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210311065.2A CN114497839A (en) | 2022-03-28 | 2022-03-28 | Integral type lithium cell top cap piece |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210311065.2A CN114497839A (en) | 2022-03-28 | 2022-03-28 | Integral type lithium cell top cap piece |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN114497839A true CN114497839A (en) | 2022-05-13 |
Family
ID=81488236
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202210311065.2A Pending CN114497839A (en) | 2022-03-28 | 2022-03-28 | Integral type lithium cell top cap piece |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN114497839A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115318953A (en) * | 2022-10-17 | 2022-11-11 | 宁波震裕科技股份有限公司 | Stamping and integral forming method of top cover plate, battery top cover structure and manufacturing method thereof |
| WO2024012478A1 (en) * | 2022-07-14 | 2024-01-18 | 厦门海辰储能科技股份有限公司 | Cover plate, top cover, battery cell and battery module |
-
2022
- 2022-03-28 CN CN202210311065.2A patent/CN114497839A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2024012478A1 (en) * | 2022-07-14 | 2024-01-18 | 厦门海辰储能科技股份有限公司 | Cover plate, top cover, battery cell and battery module |
| CN115318953A (en) * | 2022-10-17 | 2022-11-11 | 宁波震裕科技股份有限公司 | Stamping and integral forming method of top cover plate, battery top cover structure and manufacturing method thereof |
| CN115318953B (en) * | 2022-10-17 | 2023-02-10 | 宁波震裕科技股份有限公司 | Stamping and integral forming method of top cover plate, battery top cover structure and manufacturing method thereof |
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| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination |