CN217361860U

CN217361860U - Secondary cell's bottom plate structure

Info

Publication number: CN217361860U
Application number: CN202220227358.8U
Authority: CN
Inventors: 张方超; 吴清泉; 赵艺惠
Original assignee: Shanghai Lanjun New Energy Technology Co Ltd
Current assignee: Shanghai Lanjun New Energy Technology Co Ltd
Priority date: 2022-01-27
Filing date: 2022-01-27
Publication date: 2022-09-02
Anticipated expiration: 2032-01-27

Abstract

The utility model relates to a secondary battery's bottom plate structure, this bottom plate structure include the bottom plate board, from a plurality of bosss that the left side set up side by side to the right side on the bottom plate board and with the boss around the conduction groove that both ends communicate in turn, compare with prior art, the utility model has the advantages of increase electric core infiltration speed, reduce and annotate liquid time and improve production efficiency.

Description

Secondary cell's bottom plate structure

Technical Field

The utility model belongs to the technical field of bottom plate structure and specifically relates to a secondary battery's bottom plate structure is related to.

Background

The current common liquid injection mode is mainly divided into two types, one type is directly injecting liquid through a liquid injection hole, the other type is placing the battery into electrolyte to allow the electrolyte to permeate the battery, when the battery is injected with liquid, the electrolyte soaks the battery core for too long, the liquid injection period of the battery is long, and the micro short circuit occurs after the coating in the battery core falls off from the bottom support plate hole on the aluminum shell.

As shown in fig. 4 and 5, in order to prevent the interference between the battery core and the R corner (arc corner) at the bottom of the aluminum shell, a bottom supporting plate is placed at the bottom of the aluminum shell to elevate the battery core, the current bottom supporting plate is of a planar structure, and a plurality of holes are formed in the bottom supporting plate, and a plurality of positions of the edges at the front side and the rear side of the bottom supporting plate are dug out.

SUMMERY OF THE UTILITY MODEL

The present invention is directed to a bottom plate structure of a secondary battery for overcoming the above-mentioned drawbacks of the prior art.

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

the utility model provides a secondary battery's bottom plate structure, this bottom plate structure includes the bottom plate, from a plurality of bosss that the left side set up side by side to the right side on the bottom plate and with the conduction groove of both ends intercommunication in turn around the boss.

The bottom supporting plate structure is arranged between the inner bottom surfaces of the battery cell and the aluminum shell, and an insulating gasket is arranged between the bottom supporting plate structure and the battery cell.

The vertical section of the boss is a trapezoid with a wide upper part and a narrow lower part.

The vertical section of the conduction groove is in a trapezoid shape with a wide upper part and a narrow lower part.

The vertical section of the boss is larger than the area of the vertical section of the conduction groove.

Only one end of each boss is communicated with the conduction groove.

A plurality of battery cell grooves for electrolyte to enter are formed between the bottom supporting plate structure and the insulating gaskets.

The bottom support plate is small in thickness, and the thickness range is 0.2-1 mm.

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

1. the utility model increases the clearance at the bottom of the battery cell by arranging the lug boss on the plane of the bottom supporting plate, thereby realizing the technical effects that the electrolyte can enter the battery cell from the bottom more easily to increase the infiltration speed of the battery cell, reduce the liquid injection time and improve the production efficiency;

2. the utility model realizes the technical effect of saving material cost by setting the thickness of the bottom support plate to be smaller under the condition that the distance between the electric core and the aluminum shell is not changed through supporting the electric core by the boss arranged on the plane of the bottom support plate;

3. the bottom supporting plate of the utility model has uniform structure thickness, simple structure and easy molding;

4. the utility model discloses through set up the conduction groove at boss both ends, realize making electrolyte more easily get into the technological effect of the die cavity at the boss back;

5. the utility model discloses an offer the conduction groove in turn at boss both ends, the guide way has the effect similar to the strengthening rib, the power of electric core is pressed perpendicularly downwards when using the bottom plate board, the power disperses into two and has contained angle and relatively little power, it has stability similar to triangle-shaped, make bottom plate board intensity bigger, and the bottom plate board offers the conduction groove in boss both sides simultaneously than offering the conduction groove in only one side and bending more easily;

6. the utility model discloses an establish the bottom plate into sclausura structure, the coating drops on the bottom plate when preventing to use, and then falls to the aluminum hull bottom, leads to the problem of the inside little short circuit of battery, has realized the technological effect that separates coating and aluminum hull bottom.

Drawings

Fig. 1 is a schematic structural diagram of the present invention.

Fig. 2 is a schematic view of a partial structure of the present invention.

Fig. 3 is a schematic view of a partial vertical cross section of the present invention.

Fig. 4 is a schematic diagram of a conventional bottom plate structure.

Fig. 5 is a schematic bottom vertical sectional view of a conventional secondary battery.

Wherein: 1. bottom support plate, 11, boss, 12, conduction groove, 2, electric core, 3, insulating gasket, 4, aluminum hull, 5, electric core groove, 6, current bottom support plate structure, 61, bottom support plate hole.

Detailed Description

The present invention will be described in detail below with reference to the accompanying drawings and specific embodiments.

Examples

As shown in fig. 1, the utility model provides a secondary battery's bottom plate structure, this bottom plate structure includes bottom plate board 1, by bottom plate board 1 left side to a plurality of bosss 11 of right side setting and the conduction groove 12 of seting up in turn at boss 11 front and back both ends, through setting up bottom plate board 11 to sclausura structure, and set up boss 11 on bottom plate board 11, boss 11 is used for supporting electric core 2, and increase the clearance between bottom plate board 11 and electric core 2, make electrolyte get into electric core 2 from the bottom more easily, and then increase the infiltration speed of electrolyte in the battery bottom, and can avoid coating to 4 bottoms of aluminum hull, set up conduction groove 12 in turn at boss 11 both ends, can make electrolyte get into the die cavity at the boss 11 back more easily, electric core slot 5 promptly, it is higher to compare the intensity of both sides fluting bottom plate board.

This bottom mounting plate structure sets up between electric core 22 and aluminum hull 4 for separate electric core 2 and aluminum hull 4, and be equipped with insulating gasket 3 between this structure and electric core 2.

The above description is only for the specific embodiments of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art can easily think of various equivalent modifications or replacements within the technical scope of the present invention, and these modifications or replacements should be covered within the scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.

Claims

1. The utility model provides a secondary battery's bottom plate structure, its characterized in that, this bottom plate structure includes bottom plate (1), a plurality of bosss (11) that set up side by side from the left side to the right side on bottom plate (1) and with boss (11) front and back both ends conduction groove (12) that communicate in turn.

2. The bottom plate structure of the secondary battery according to claim 1, wherein the bottom plate structure is arranged between the battery cell (2) and the inner bottom surface of the aluminum shell (4), and an insulating gasket (3) is arranged between the bottom plate structure and the battery cell (2).

3. The bottom pallet structure of a secondary battery according to claim 1, wherein the vertical section of the boss (11) is a trapezoid having a wide top and a narrow bottom.

4. The bottom plate structure of a secondary battery according to claim 3, wherein the vertical section of the conduction groove (12) is a trapezoid with a wide top and a narrow bottom.

5. The bottom pallet structure of a secondary battery according to claim 4, wherein the vertical section of the boss (11) is larger than the area of the vertical section of the conduction groove (12).

6. The tray structure of a secondary battery according to claim 1, wherein each of the bosses (11) has only one end communicating with the conduction groove (12).

7. The tray structure of claim 1, wherein a plurality of cell slots (5) for the electrolyte to enter are formed between the tray structure and the insulating spacer (3).

8. The bottom plate structure of a secondary battery according to claim 1, wherein the bottom plate (1) has a small thickness ranging from 0.2 to 1 mm.