CN216161823U

CN216161823U - Super large battery case structure

Info

Publication number: CN216161823U
Application number: CN202121999693.1U
Authority: CN
Inventors: 郑盼斌; 张亚儒; 刘涛
Original assignee: Shanghai Lanjun New Energy Technology Co Ltd
Current assignee: Shanghai Lanjun New Energy Technology Co Ltd
Priority date: 2021-08-24
Filing date: 2021-08-24
Publication date: 2022-04-01
Anticipated expiration: 2031-08-24

Abstract

The utility model relates to a super-large battery shell structure which comprises a frame (4) and a pole assembly positioned in the length direction of the frame (4); the battery shell structure also comprises cover plates (11) positioned above and below the frame (4); the pole assembly comprises a plurality of sealing nails (1) for fixing the assembling position of the pole. Utmost point post subassembly is still including being located frame (4) outside: the pole column is used for connecting and conducting electricity; an upper plastic (7) for insulation; utmost point post subassembly is still including lieing in frame (4) inboard: the lower plastic (3) is used for insulation; the adapter plate is used for matching with the structure of the sealing nail (1) to complete assembly. Compared with the prior art, the utility model has the advantages of reducing explosion points, improving the product percent of pass, enhancing the sealing performance of the pole, reducing the difficulty of assembling the pole and the like.

Description

Super large battery case structure

Technical Field

The utility model relates to the field of battery components, in particular to a battery shell structure.

Background

The battery shell structure is an essential basic part in the battery manufacturing process. The battery shell mainly comprises a frame, a cover plate, a pole, upper plastic, lower plastic and a switching piece. The existing pole structure is of a cylindrical structure, and the poles are integrated.

The existing pole is of a cylindrical structure, five bosses on one pole are required to be matched with the switching piece, the size consistency of the pole and the switching piece is difficult to guarantee, and the phenomenon that the matching gap is large or the center distance between every two poles is unmatched easily occurs. In the laser welding process, laser easily passes through the gap and contacts the sealing ring below the adapter plate, and the phenomena of explosion point and blackening occur. The existing pole and the switching piece are welded through manual point selection, the machining efficiency is low, and the track consistency is poor.

SUMMERY OF THE UTILITY MODEL

The utility model aims to overcome the defects in the prior art and provide the oversized battery shell structure which reduces the explosion point, improves the product percent of pass, enhances the sealing performance of the pole and reduces the difficulty in assembling the pole.

The purpose of the utility model can be realized by the following technical scheme:

a super-large battery shell structure comprises a frame and a pole assembly positioned in the length direction of the frame;

the battery shell structure also comprises cover plates positioned above and below the frame;

the pole assembly comprises a plurality of sealing nails used for fixing the assembly position of the pole. The frame is manufactured through a stamping process.

Further, utmost point post subassembly still including being located the frame outside:

the positive/negative pole column is used for connecting electric conduction and enhancing the matching accuracy and consistency;

the upper plastic is used for insulation;

utmost point post subassembly still including lieing in the frame inboard:

the lower plastic is used for insulation;

the positive/negative pole switching piece is used for matching with the sealing nail structure to complete assembly, so that matching accuracy and consistency are enhanced;

the upper plastic is positioned between the pole and the frame; the switching piece be located plastic inboard down, sealed nail with switching piece, plastic, frame down, go up plastic and utmost point post alternate and connect.

Furthermore, the frame is provided with connecting holes the number of which is the same as that of the sealing nails, and the sealing nails are inserted into the connecting holes.

Further, still be equipped with the sealing member between lower plastic and the frame for sealed to the post subassembly, reinforcing leakproofness and insulating nature.

Furthermore, the middle part of the lower plastic is provided with a through hole corresponding to the position of the connecting hole, the middle part of the adapter plate is provided with a switching hole corresponding to the position of the through hole, and during assembly, the sealing nail sequentially penetrates through the connecting hole, the through hole and the switching hole.

Furthermore, a sealing ring is arranged between the upper plastic and the frame and used for sealing.

Furthermore, the connecting hole, the through hole and the switching hole are matched with the section shape of the sealing nail.

Furthermore, the lower plastic comprises a large C component in the middle, and a left C component and a right C component which are positioned on two sides of the large C component and are buckled with the large C component; the opening of the large C component is positioned on the inner side.

Further, the length of the adapter sheet is not more than the opening length of the large C component (300).

Furthermore, the section of the adapter plate is of an L-shaped structure and is tightly attached to the large C component. The switching hole and the L-shaped corner part of the switching piece are both provided with a chamfer, and can be tightly matched with the sealing nail and the lower plastic, so that the phenomena of explosion and blackening are avoided.

Furthermore, the frame is also provided with a balance air hole, and the balance air hole is provided with an explosion-proof valve.

Compared with the prior art, the utility model has the following advantages:

(1) the utility model adopts a double-welding and double-sealing structure, thus enhancing the air tightness;

(2) the utility model reduces the welding difficulty and intensity, reduces the error probability and improves the production efficiency;

(3) the utility model adopts a sealing nail type structure, thereby greatly reducing the probability of explosion points during pole welding.

Drawings

FIG. 1 is a schematic structural view of a battery case according to an embodiment;

the reference numbers in the figures indicate: the anti-explosion valve comprises a sealing nail 1, a negative pole adapter plate 2, lower plastic 3, a through hole 31, a large C component 300, a left C component 301, a right C component 302, a frame 4, a connecting hole 41, a negative pole column 5, a sealing ring 6, upper plastic 7, a positive pole column 8, a positive pole adapter plate 9, an anti-explosion valve 10 and a cover plate 11.

Detailed Description

The utility model is described in detail below with reference to the figures and specific embodiments. The present embodiment is implemented on the premise of the technical solution of the present invention, and a detailed implementation manner and a specific operation process are given, but the protection scope of the present invention is not limited to the following embodiments.

Examples

A super large battery shell structure, as shown in fig. 1, comprises a frame 4 and a pole assembly located in the length direction of the frame 4; the battery shell structure also comprises cover plates 11 positioned above and below the frame 4; each pole assembly comprises three sealing nails 1 for fixing the assembly position of the pole. The frame 4 is manufactured by a stamping process. The frame 4 is also provided with a balance air hole, and the balance air hole is provided with an explosion-proof valve 10.

Utmost point post subassembly is still including being located the frame 4 outside: the negative pole column 5 and the positive pole column 8 are used for connecting and conducting electricity, and the matching accuracy and consistency are enhanced; an upper plastic 7 for insulation; utmost point post subassembly is still including being located 4 inboards of frame: the lower plastic 3 is used for insulation; and the positive/negative pole adapter plate is used for matching with the sealing nail 1 structure to complete assembly, so that the matching accuracy and consistency are enhanced. A sealing ring 6 is arranged between the upper plastic 7 and the frame 4.

The upper plastic 7 is positioned between the pole and the frame 4; the switching piece is located plastic 3 inboard down, and sealed nail 1 alternates connection with switching piece, lower plastic 3, frame 4, last plastic 7 and utmost point post. Still be equipped with the sealing member between plastic 3 and the frame 4 down for it is sealed to the post subassembly, reinforcing leakproofness and insulating nature.

The frame 4 is provided with connecting holes 41 with the same number as the sealing nails 1, and the sealing nails 1 are inserted into the connecting holes 41. The middle part of the lower plastic 3 is provided with a through hole 31 corresponding to the position of the connecting hole 41, the middle part of the adapter plate is provided with an adapter hole corresponding to the position of the through hole 31, and during assembly, the sealing nail 1 sequentially penetrates through the connecting hole 41, the through hole 31 and the adapter hole. The connecting hole 41, the through hole 31 and the adapting hole are matched with the section shape of the sealing nail 1.

The lower plastic 3 comprises a large C component 300 in the middle, and a left C component 301 and a right C component 302 which are positioned on two sides of the large C component 300 and are buckled with the large C component 300; the opening of the large C-component 300 is located inside. The length of the interposer is not greater than the length of the opening of the large C-module 300. The cross-section of the adapter plate is of an L-shaped structure and is tightly attached to the large C component 300. The switching hole and the L-shaped corner part of the switching piece are all chamfered, and can be tightly matched with the sealing nail 1 and the lower plastic 3, so that the phenomena of explosion and blackening are avoided.

The foregoing is directed to preferred embodiments of the present invention, other and further embodiments of the utility model may be devised without departing from the basic scope thereof, and the scope thereof is determined by the claims that follow. However, any simple modification, equivalent change and modification of the above embodiments according to the technical essence of the present invention are within the protection scope of the technical solution of the present invention.

Claims

1. The oversized battery shell structure is characterized by comprising a frame (4) and a pole assembly positioned in the length direction of the frame (4);

the battery shell structure also comprises cover plates (11) positioned above and below the frame (4);

the pole assembly comprises a plurality of sealing nails (1) for fixing the assembly position of the pole.

2. The very large battery casing structure of claim 1, characterized in that said pole assembly further comprises a frame (4) outside:

the pole column is used for connecting and conducting electricity;

an upper plastic (7) for insulation;

utmost point post subassembly still including lieing in frame (4) inboard:

the lower plastic (3) is used for insulation;

the adapter plate is used for matching with the structure of the sealing nail (1) to complete assembly;

the upper plastic (7) is positioned between the pole and the frame (4); the adapter plate is located on the inner side of the lower plastic (3), and the adapter plate, the lower plastic (3), the frame (4), the upper plastic (7) and the pole are connected in an inserting mode through the sealing nail (1).

3. The structure of the super large battery shell as claimed in claim 2, wherein the frame (4) is provided with connecting holes (41) with the same number as the sealing nails (1), and the sealing nails (1) are inserted into the connecting holes (41).

4. The very large battery casing structure of claim 2, characterized in that a sealing member is further provided between the lower plastic (3) and the frame (4) for sealing the pole assembly.

5. The ultra-large battery shell structure according to claim 3, wherein the middle part of the lower plastic (3) is provided with a through hole (31) corresponding to the position of the connecting hole (41), the middle part of the adapter plate is provided with a switching hole corresponding to the position of the through hole (31), and during assembly, the sealing nail (1) is sequentially arranged in the connecting hole (41), the through hole (31) and the switching hole in a penetrating manner.

6. The structure of the very large battery casing as recited in claim 2, wherein a sealing ring (6) is disposed between the upper plastic (7) and the frame (4) for sealing.

7. The oversized battery shell structure as recited in claim 2, wherein the lower plastic (3) comprises a large C component (300) at the middle part, and a left C component (301) and a right C component (302) which are positioned at both sides of the large C component (300) and are fastened with the large C component (300); the opening of the large C component (300) is located on the inner side.

8. The very large battery casing structure as recited in claim 7, wherein the length of said interposer is not greater than the length of the opening of the large C-module (300).

9. The very large battery casing structure of claim 7, wherein said interposer has an L-shaped cross-section and is tightly attached to the large C-module (300).

10. The oversized battery shell structure as recited in claim 1, wherein the frame (4) is further provided with a balance vent hole, and the balance vent hole is provided with an explosion-proof valve (10).