CN217405556U - Battery case and lithium battery - Google Patents
Battery case and lithium battery Download PDFInfo
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- CN217405556U CN217405556U CN202220400104.1U CN202220400104U CN217405556U CN 217405556 U CN217405556 U CN 217405556U CN 202220400104 U CN202220400104 U CN 202220400104U CN 217405556 U CN217405556 U CN 217405556U
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- side wall
- wall
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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 belongs to the technical field of lithium batteries, and relates to a battery shell and a lithium battery. The battery shell is square, the battery shell comprises a top wall, a bottom wall and a side wall connected between the top wall and the bottom wall, the side wall comprises a first side wall, a second side wall, a third side wall and a fourth side wall which are sequentially connected, the length of the outer side surface of the first side wall is greater than or equal to 16mm, the ratio of the length of the outer side surface of the first side wall to the width of the outer side surface of the first side wall is greater than or equal to 3, the width of the outer side surface of the first side wall is the width of the outer side surface of the top wall, and the length of the outer surface of the first side wall is greater than or equal to the length of the outer side surface of the top wall; one of the first side wall, the second side wall, the third side wall and the fourth side wall is provided with a liquid injection hole. The utility model provides a battery case takes the mode of seting up on the lateral wall and annotates the liquid hole, can not occupy the space of roof, can adopt great size utmost point ear to weld, avoids utmost point ear welding difficulty's the condition to take place.
Description
Technical Field
The application belongs to the technical field of lithium batteries, and particularly relates to a battery shell and a lithium battery.
Background
The liquid injection hole of the existing small steel shell battery for consumer is opened on the upper cover plate, which occupies the cover plate space, for the battery cell with the length more than or equal to 16mm and the length-width ratio more than or equal to 3, the cover plate space is smaller, the electrode lug below the liquid injection hole is reduced after occupying a certain position and is welded to the cover plate space, and only the narrower electrode lug can be adopted, thus leading to the welding difficulty.
SUMMERY OF THE UTILITY MODEL
The technical problem that this application will solve is: the battery shell and the lithium battery are provided to solve the technical problems that after a liquid injection hole in the existing small steel shell battery occupies a certain space of a cover plate, tabs are difficult to weld and the efficiency is low.
In order to solve the above-mentioned technical problems, in one aspect, embodiments of the present application provide a battery case, which has a square shape, the battery shell comprises a top wall, a bottom wall and a side wall connected between the top wall and the bottom wall, the side wall comprises a first side wall, a second side wall, a third side wall and a fourth side wall which are connected in sequence, the first side wall and the third side wall are opposite and have the same area of the outer side surface, the second side wall and the fourth side wall are opposite and have the same area of the outer side surface, the length of the outer side surface of the first side wall is greater than or equal to 16mm, the ratio of the length to the width of the outer side surface of the first side wall is greater than or equal to 3, the width of the outer side surface of the first side wall is the width of the outer side surface of the top wall, and the length of the outer surface of the first side wall is greater than or equal to the length of the outer side surface of the top wall;
one of the first side wall, the second side wall, the third side wall and the fourth side wall is provided with a liquid injection hole.
Optionally, the battery case includes a cover plate and a case, the case is a square barrel-shaped structure with an opening at one end, the cover plate is fastened to the opening end of the case, and the cover plate is one of a top wall, a bottom wall, a first side wall, a second side wall, a third side wall and a fourth side wall.
Optionally, the wall thickness of the battery housing is 0-2 mm.
Optionally, the distance from the nearest point on the edge of the liquid injection hole to the top wall to the outer side surface of the top wall is 0-3 mm.
Optionally, the absolute value of the difference between the distances from the center of the liquid injection hole to the two vertical sides of the side wall is 0-2 mm.
Optionally, the length of the outer side surface of the top wall is 5-10 mm.
Optionally, the width of the outer side surface of the first side wall is 2-5 mm.
Optionally, the battery case is a steel case.
Optionally, the liquid injection hole is a round hole, and the diameter of the liquid injection hole is 0-2 mm.
According to the battery case of the embodiment of the application, the first side wall and the third side wall are opposite and have the same area of the outer side surface, the second side wall and the fourth side wall are opposite and have the same area of the outer side surface, the length of the outer side surface of the first side wall is greater than or equal to 16mm, the ratio of the length of the outer side surface of the first side wall to the width of the outer side surface of the first side wall is greater than or equal to 3, the width of the outer side surface of the first side wall is the width of the outer side surface of the top wall, and the length of the outer surface of the first side wall is greater than or equal to the length of the outer side surface of the top wall; one of the first side wall, the second side wall, the third side wall and the fourth side wall is provided with a liquid injection hole. The utility model provides a battery case takes the mode of seting up on the lateral wall and annotates the liquid hole, can not occupy the space of roof, can adopt great size utmost point ear to weld, avoids utmost point ear welding difficulty's the condition to take place.
On the other hand, the embodiment of the application also provides a lithium battery, which comprises a pole core and the battery shell, wherein the pole core is arranged in the battery shell.
Drawings
FIG. 1 is a schematic view of a battery housing provided in accordance with an embodiment of the present application;
fig. 2 is an exploded view of a battery housing provided in accordance with an embodiment of the present application;
fig. 3 is a front view of a battery case provided by an embodiment of the present application.
The reference numerals in the specification are as follows:
100. a battery case;
1. a top wall;
2. a side wall; 21. a first side wall; 22. a second side wall;
4. a liquid injection hole; 5. a cover plate; 6. a housing.
Detailed Description
In order to make the technical problems, technical solutions and advantageous effects solved by the present application more clearly apparent, the present application is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present application and are not intended to limit the present application.
As shown in fig. 1 and fig. 2, in the battery case 100 provided in the embodiment of the present application, the battery case 100 includes a top wall 1, a bottom wall and a side wall 2 connected between the top wall 1 and the bottom wall, the side wall 2 comprises a first side wall 21, a second side wall 22, a third side wall and a fourth side wall which are connected in sequence, the first side wall 21 and the third side wall are opposite and have the same area of the outer side surface, the second side wall 22 and the fourth side wall are opposite and have the same area of the outer side surface, the length of the outer side surface of the first side wall 21 is greater than or equal to 16mm, the ratio of the length to the width of the outer side surface of the first side wall 21 is greater than or equal to 3, the width of the outer side surface of the first side wall 21 is the width of the outer side surface of the top wall 1, the length of the outer surface of the first side wall 21 is greater than or equal to the length of the outer side surface of the top wall 1;
one of the first side wall 21, the second side wall 22, the third side wall and the fourth side wall is provided with a liquid injection hole 4. In actual production, the liquid injection hole 4 is sealed by a sealing piece after liquid injection is finished.
In one embodiment, the battery case 100 includes a cover plate 5 and a case 6, the case 6 is a square barrel structure with an open end, the cover plate 5 is fastened to the open end of the case 6, and the cover plate 5 is one of a top wall 1, a bottom wall, a first side wall 21, a second side wall 22, a third side wall and a fourth side wall. In the present application, the top wall 1 is chosen as the cover plate 5, in particular, the cover plate 5 is welded at the open end of the housing 6.
In one embodiment, the wall thickness of the battery case 100 is 0-2 mm.
In one embodiment, as shown in FIG. 3, the distance H from the closest point on the edge of the pour hole 4 to the top wall 1 to the outer surface of the top wall 1 is 0-3 mm.
In one embodiment, the absolute value D of the difference between the distances from the center of the liquid injecting hole 4 to the two vertical edges of the side wall is 0-2 mm. In other words, the center of the pour hole 4 can be set at any position D in fig. 3.
In one embodiment the length of the outer side surface of the top wall 1 is 5-10 mm.
In one embodiment, the width of the outer surface of the first sidewall 21 is 2-5 mm.
In one embodiment, the battery case 100 is a steel case.
In one embodiment, the liquid injection hole 4 is a round hole, and the diameter of the liquid injection hole 4 is 0-2 mm.
In the battery case provided in the embodiment of the present application, the first side wall and the third side wall are opposite and have the same area on the outer side surface, the second side wall and the fourth side wall are opposite and have the same area on the outer side surface, the length of the outer side surface of the first side wall is greater than or equal to 16mm, the ratio of the length of the outer side surface of the first side wall to the width of the outer side surface of the first side wall is greater than or equal to 3, the width of the outer side surface of the first side wall is the width of the outer side surface of the top wall, and the length of the outer surface of the first side wall is greater than or equal to the length of the outer side surface of the top wall; one of the first side wall, the second side wall, the third side wall and the fourth side wall is provided with a liquid injection hole. The utility model provides a battery case takes the mode of seting up on the lateral wall and annotates the liquid hole, can not occupy the space of roof, can adopt great size utmost point ear to weld, avoids utmost point ear welding difficulty's the condition to take place.
In addition, an embodiment of the present application further provides a lithium battery (not shown in the drawings), which includes a pole piece (not shown in the drawings) and the battery case 100 of the above embodiment, wherein the pole piece is disposed in the battery case 100.
The above description is only exemplary of the present application and should not be taken as limiting the present application, as any modification, equivalent replacement, or improvement made within the spirit and principle of the present application should be included in the protection scope of the present application.
Claims (10)
1. A battery shell is characterized in that the battery shell is square, the battery shell comprises a top wall, a bottom wall and side walls connected between the top wall and the bottom wall, each side wall comprises a first side wall, a second side wall, a third side wall and a fourth side wall which are connected in sequence, the first side wall and the third side wall are opposite, the areas of the outer side surfaces of the first side wall and the third side wall are equal, the areas of the outer side surfaces of the second side wall and the fourth side wall are opposite, the length of the outer side surface of the first side wall is greater than or equal to 16mm, the ratio of the length to the width of the outer side surface of the first side wall is greater than or equal to 3, the width of the outer side surface of the first side wall is the width of the outer side surface of the top wall, and the length of the outer surface of the first side wall is greater than or equal to the length of the outer side surface of the top wall;
and one of the first side wall, the second side wall, the third side wall and the fourth side wall is provided with a liquid injection hole.
2. The battery casing of claim 1, wherein the battery casing comprises a cover plate and a housing, the housing is a square barrel-shaped structure with one open end, the cover plate is fastened to the open end of the housing, and the cover plate is one of a top wall, a bottom wall, a first side wall, a second side wall, a third side wall and a fourth side wall.
3. The battery can of claim 1, wherein the battery can has a wall thickness of 0-2 mm.
4. The battery case according to claim 1, wherein a point on the edge of the pour hole closest to the top wall is 0 to 3mm from the outer side surface of the top wall.
5. The battery case according to claim 1, wherein the absolute value of the difference between the distances from the center of the pour hole to the two vertical sides of the side wall is 0 to 2 mm.
6. The battery case of claim 1, wherein the length of the outer side surface of the top wall is 5-10 mm.
7. The battery case of claim 1, wherein the width of the outer side surface of the first sidewall is 2-5 mm.
8. The battery case of claim 1, wherein the battery case is a steel can.
9. The battery case according to any one of claims 1 to 8, wherein the liquid injection hole is a round hole, and the diameter of the liquid injection hole is 0 to 2 mm.
10. A lithium battery comprising a pole piece and a battery case according to any one of claims 1 to 8, the pole piece being disposed within the battery case.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220400104.1U CN217405556U (en) | 2022-02-24 | 2022-02-24 | Battery case and lithium battery |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220400104.1U CN217405556U (en) | 2022-02-24 | 2022-02-24 | Battery case and lithium battery |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN217405556U true CN217405556U (en) | 2022-09-09 |
Family
ID=83136465
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202220400104.1U Active CN217405556U (en) | 2022-02-24 | 2022-02-24 | Battery case and lithium battery |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN217405556U (en) |
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2022
- 2022-02-24 CN CN202220400104.1U patent/CN217405556U/en active Active
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