CN115692960A - Secondary cell integral type top cap - Google Patents
Secondary cell integral type top cap Download PDFInfo
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- CN115692960A CN115692960A CN202211343041.1A CN202211343041A CN115692960A CN 115692960 A CN115692960 A CN 115692960A CN 202211343041 A CN202211343041 A CN 202211343041A CN 115692960 A CN115692960 A CN 115692960A
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- grooves
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- groove
- connecting column
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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 application provides an integrated top cover of a secondary battery, which relates to the technical field of lithium batteries and comprises a body; the lower plastic is arranged below the body, an opening is formed in the surface of the lower plastic, a plurality of connecting columns are fixed on the edge of the opening, a through hole is formed in the position of the body corresponding to the opening, a plurality of grooves are formed in the inner wall of the through hole, and the connecting columns correspond to the grooves in number and position and are connected with the grooves; the pole is arranged in the through hole and the opening; the outer wall of the connecting column is provided with an avoidance groove; the connecting columns and the grooves are L-shaped in a connected state, the avoiding grooves are connected with the side walls of the through holes, the tops of the connecting columns and the groove connecting positions protrude out of the grooves, the protruding height is 0.1mm-1mm, the connecting columns form a plurality of fixing positions, the firmness of the body and the lower plastic installation is favorably enhanced, and the connecting areas of the connecting columns and the grooves are large and are not easy to loosen.
Description
Technical Field
The application relates to the field of lithium batteries, in particular to an integrated top cover of a secondary battery.
Background
A secondary battery is also called a rechargeable battery or a secondary battery, and refers to a battery that can be continuously used by activating an active material by charging after the battery is discharged.
By utilizing the reversibility of chemical reactions, a new battery can be constructed, namely after one chemical reaction is converted into electric energy, the electric energy can be used for repairing a chemical system, and then the chemical reaction is converted into the electric energy, so that the new battery is called as a secondary battery (rechargeable battery). The main rechargeable batteries in the market include nickel-hydrogen batteries, nickel-cadmium batteries, lead-acid (or lead storage) batteries, lithium ion batteries, polymer lithium ion batteries and the like.
The square aluminum shell battery of lithium ion is taken as an example, an aluminum shell is used for loading a naked winding core, then the top cover is installed to seal the naked winding core in the shell, the bottom of the top cover is of a lower plastic structure, and multi-point installation is carried out between the lower plastic and the top cover in a mode of an ultrasonic hot melting column, although a plurality of positions of the lower plastic are subjected to ultrasonic hot melting, the area of a single ultrasonic hot melting point is smaller, the common outer diameter is 1mm-3mm, so that the ultrasonic hot melting point is easy to loosen, and the firmness of installation is directly influenced.
Disclosure of Invention
An object of the present application is to provide an integrated top cover for a secondary battery to solve the above technical problems. To achieve the purpose, the following technical scheme is adopted in the application:
a secondary battery integrated top cap includes;
a body;
the lower plastic is arranged below the body, an opening is formed in the surface of the lower plastic, a plurality of connecting columns are fixed on the edge of the opening, a through hole is formed in the position of the body corresponding to the opening, a plurality of grooves are formed in the inner wall of the through hole, and the connecting columns correspond to the grooves in number and position and are connected with the grooves;
the pole is arranged in the through hole and the opening;
through the design, the connecting column is installed on the body and is stably connected with the body;
further preferred embodiments: an avoidance groove is formed in the outer wall of the connecting column;
the connecting column is L-shaped in the connection state with the groove, and the avoiding groove is connected with the side wall of the through hole.
Further preferred embodiments: the top of the connecting position of the connecting column and the groove protrudes out of the groove, and the protruding height is 0.1mm-1mm.
And further: the top of the groove is provided with a ceramic ring, and the bottom wall of the ceramic ring is provided with a notch corresponding to the convex position of the connecting column, and the ceramic ring and the connecting column are connected;
after the connecting column and the groove are installed, the ceramic ring shields the installation position of the connecting column and the groove, and the reinforcing effect can be achieved.
Further preferred embodiments: the ceramic ring is fixed between the top cover and the pole.
Further preferred embodiments: the top of the ceramic ring is provided with a convex part which is pressed against the pole.
The beneficial effect of this application:
1. the connecting columns are formed into an L shape after being cooled to clamp the grooves, the side walls of the through holes are clamped by the grooves, the body and the lower plastic are fixed at the moment, the connecting columns form a plurality of fixing positions, the firmness of the installation of the body and the lower plastic is favorably enhanced, and the connecting areas of the connecting columns and the grooves are large and are not easy to loosen;
2. adopt the mode of brazing to fix utmost point post and ceramic ring, the bulge is cyclic annular, and the position of brazing is the round, can increase the area of brazing, improves the assembly strength between utmost point post and the ceramic ring, ensures sealed.
Drawings
FIG. 1 is an exploded view of the overall structure of the present application;
FIG. 2 is an enlarged view of a portion A of FIG. 1;
FIG. 3 is an installation view of the overall structure of the present application;
FIG. 4 is an enlarged view of a portion of the structure shown at B in FIG. 3;
fig. 5 is a plan view of the installation of the overall structure of the present application.
In the figure: the novel metal wire connecting piece comprises a body (1), a groove (101), lower plastic (2), an opening (201), a connecting column (3), an avoiding groove (301), a ceramic ring (4) and a pole (5).
Detailed Description
Referring to fig. 1 to 5, an integrated top cap for a secondary battery includes;
a body 1;
the lower plastic 2 is arranged below the body 1, an opening 201 is formed in the surface of the lower plastic 2, a plurality of connecting columns 3 are fixed on the edge of the opening 201, the lower plastic 2 is made of plastic, the connecting columns 3 are made of the same material as the lower plastic 2, and through holes are formed in the body 1 corresponding to the position of the opening 201;
the installation steps of the body 1 and the lower plastic 2 are as follows:
the body 1 and the lower plastic 2 are taken up and vertically placed, the opening 201 corresponds to the through hole, the body 1 and the lower plastic 2 are adjusted to be close to each other, and the connecting column 3 penetrates through the through hole from bottom to top;
further, the inner wall of the through hole is provided with a plurality of grooves 101, after the connecting column 3 penetrates through the through hole, the number and the positions of the connecting column 3 correspond to those of the grooves 101, the outer wall of the connecting column 3 is provided with an avoiding groove 301 (shown in fig. 2), the avoiding groove 301 of the connecting column 3 is hot-melted in a hot-melting die-casting mode, the connecting column 3 deforms, then the top end of the connecting column 3 is adjusted to be expanded into the groove 101, the connecting column 3 is connected with the grooves 101, the connecting column 3 is formed into an L shape after being cooled to clamp the grooves 101, the avoiding groove 301 clamps the side wall of the through hole, at the moment, the body 1 and the lower plastic 2 are fixed, a plurality of connecting columns 3 form a plurality of fixing positions, the firmness of mounting of the body 1 and the lower plastic 2 is favorably enhanced, and the connecting area of the connecting column 3 and the grooves 101 is large and is not easy to loosen;
the ceramic ring 4 is arranged at the top of the groove 101, the ceramic ring 4 is taken up and placed above the groove 101, the top of the connecting position of the connecting column 3 and the groove 101 protrudes out of the groove 101, a notch is arranged at the bottom wall of the ceramic ring 4 corresponding to the protruding position of the connecting column 3, the notch of the ceramic ring 4 is adjusted to be connected with the protruding position of the connecting column 3, then the ceramic ring 4 and the body 1 are fixed in a brazing mode, the ceramic ring 4 shields the upper part of the connecting column 3, the protruding height is 0.1mm-1mm, therefore, the connecting column 3 is clamped by the ceramic ring 4, the area is large, the connecting strength of the connecting column 3 and the body 1 is further enhanced, and the connecting column 3 cannot be separated from the body 1;
in order to ensure that the lower plastic 2 and the body 1 are installed smoothly, the lower plastic 2 and the body 1 can be further installed in an ultrasonic hot melting mode, so that the condition that the bottom surface of the lower plastic 2 is warped is avoided;
ceramic ring 4 and the installation of body 1 finish the back, install utmost point post 5 in through-hole and opening 201, and 4 tops of ceramic ring are equipped with the bulge, support utmost point post 5, adopt brazed mode with utmost point post 5 fixed with ceramic ring 4, and the bulge is cyclic annularly, and the position of brazing is the round, can increase the area of brazing, improves the equipment intensity between utmost point post 5 and the ceramic ring 4, ensures sealedly.
Claims (6)
1. An integrated top cap for a secondary battery, comprising;
a body (1);
the lower plastic (2) is arranged below the body (1), an opening (201) is formed in the surface of the lower plastic (2), a plurality of connecting columns (3) are fixed on the edge of the opening (201), a through hole is formed in the body (1) corresponding to the position of the opening (201), a plurality of grooves (101) are formed in the inner wall of the through hole, and the connecting columns (3) correspond to the grooves (101) in number and position and are connected with the grooves;
and the pole column (5) is arranged in the through hole and the opening (201).
2. The one-piece top cap for secondary battery according to claim 1, wherein: an avoidance groove (301) is formed in the outer wall of the connecting column (3);
the connecting column (3) is L-shaped in the connection state with the groove (101), and the avoiding groove (301) is connected with the side wall of the through hole.
3. The one-piece top cap for secondary battery according to claim 1, wherein: the top of the connecting position of the connecting column (3) and the groove (101) protrudes out of the groove (101), and the protruding height is 0.1mm-1mm.
4. The one-piece top cap for secondary battery according to claim 2, wherein: the top of the groove (101) is provided with a ceramic ring (4), and the bottom wall of the ceramic ring (4) is provided with a notch corresponding to the convex position of the connecting column (3), and the ceramic ring and the connecting column are connected.
5. The integrated top cap for secondary battery according to claim 4, wherein: the ceramic ring (4) is fixed between the top cover and the pole (5).
6. The integrated top cap for secondary battery according to claim 5, wherein: the top of the ceramic ring (4) is provided with a convex part which is pressed against the pole (5).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211343041.1A CN115692960A (en) | 2022-10-31 | 2022-10-31 | Secondary cell integral type top cap |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211343041.1A CN115692960A (en) | 2022-10-31 | 2022-10-31 | Secondary cell integral type top cap |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN115692960A true CN115692960A (en) | 2023-02-03 |
Family
ID=85045666
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202211343041.1A Pending CN115692960A (en) | 2022-10-31 | 2022-10-31 | Secondary cell integral type top cap |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN115692960A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115995642A (en) * | 2023-02-09 | 2023-04-21 | 深圳海润新能源科技有限公司 | End cover assembly, energy storage device and electric equipment |
-
2022
- 2022-10-31 CN CN202211343041.1A patent/CN115692960A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115995642A (en) * | 2023-02-09 | 2023-04-21 | 深圳海润新能源科技有限公司 | End cover assembly, energy storage device and electric equipment |
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