CN211045516U

CN211045516U - Square shell lithium battery insulation stop frame

Info

Publication number: CN211045516U
Application number: CN201921963488.2U
Authority: CN
Inventors: 齐永成
Original assignee: Hefei Guoxuan High Tech Power Energy Co Ltd
Current assignee: Hefei Gotion High Tech Power Energy Co Ltd
Priority date: 2019-11-13
Filing date: 2019-11-13
Publication date: 2020-07-17
Anticipated expiration: 2029-11-13

Abstract

The utility model provides an insulation stop frame of a square shell lithium battery, which comprises an upper stop frame and a lower stop frame which are buckled together; the upper stop moving frame comprises an upper stop moving frame body, and two pole column holes for the pole columns of the battery cell to pass through are formed in the upper stop moving frame body; the lower stopping frame comprises a lower stopping frame body, two welding slag grooves used for collecting welding slag are arranged on one side, close to the upper stopping frame, of the lower stopping frame body, and the two welding slag grooves and the two pole holes are arranged in a one-to-one correspondence mode. The utility model provides a stop frame can realize effectively that connection piece and book core top separate, prevents that the welding slag from getting into to roll up the core and arousing the short circuit, and fixed roll core prevents to rock simultaneously.

Description

Square shell lithium battery insulation stop frame

Technical Field

The utility model relates to a lithium cell technical field especially relates to an insulating locking frame of square shell lithium cell.

Background

In the production process of the square lithium ion power battery, because the positive electrode and the negative electrode need to be led out from the inside of the battery, a certain distance is reserved between the cover plate and the winding core in the battery so as to facilitate the connection of the connecting sheet and the positive electrode and the negative electrode. When the battery is used, the battery jolts and moves along with a vehicle body, and if an object is not added between the winding core and the top cover so as to prevent the winding core from moving up and down along with the movement of the battery, potential safety hazards can be brought after a long time; in addition, the connecting sheet and the cover plate pole are subjected to laser welding, fine welding slag is easily generated and falls into the battery core to cause short circuit thermal runaway, the conventional production line mainly depends on adhesive tape sticking, the adhesive tape bonding capacity is reduced through electrolyte soaking, the adhesive tape is easy to fall off, safety accidents are caused, and property and personnel loss is caused.

SUMMERY OF THE UTILITY MODEL

Based on the technical problem that exists among the background art, the utility model provides an insulating locking frame of square shell lithium cell.

The utility model provides an insulation stop frame of a square shell lithium battery, which comprises an upper stop frame and a lower stop frame which are buckled together;

the upper stop moving frame comprises an upper stop moving frame body, and two pole column holes for the pole columns of the battery cell to pass through are formed in the upper stop moving frame body;

the lower stopping frame comprises a lower stopping frame body, two welding slag grooves used for collecting welding slag are arranged on one side, close to the upper stopping frame, of the lower stopping frame body, and the two welding slag grooves and the two pole holes are arranged in a one-to-one correspondence mode.

Preferably, the upper stop moving frame body is provided with buckles at the two sides of the two pole column holes; the lower stopping frame body is close to one side of the upper stopping frame body, clamping grooves matched with the buckles are formed in the positions, on the two sides of the two welding slag grooves, of the lower stopping frame body, and the two buckles are connected with the two clamping grooves in a buckled mode respectively.

Preferably, a plurality of limiting blocks are arranged on one side, close to the lower stopping frame body, of the upper stopping frame body.

Preferably, the upper stop frame body is provided with a plurality of limiting holes, the lower stop frame body is provided with a plurality of limiting columns on one side close to the upper stop frame body, the limiting columns are matched with the limiting holes, and the limiting columns are respectively matched and clamped with the limiting holes.

Preferably, a first explosion-proof hole is formed in the position, located between the two pole column holes, of the upper stopping frame body, and a second explosion-proof hole corresponding to the first explosion-proof hole is formed in the position, located between the two welding slag grooves, of the lower stopping frame body.

Preferably, the upper stop motion frame body is provided with a liquid injection hole.

The utility model provides a square shell lithium cell insulation locking frame, through the cooperation of buckle and draw-in groove be connected with top stop frame, lower stop frame lock together, utmost point post hole is used for electric core utmost point post to pass, with connection piece laser welding, the welding slag groove is used for collecting connection piece and utmost point post laser welding and falls down the welding slag, prevents to get into electric core and causes the short circuit; the liquid injection hole is used for injecting liquid into the battery cell through the stopping frame; the first explosion-proof hole and the second explosion-proof hole are used for air outlet of the battery cell explosion-proof valve, the limiting block limits the distance between the upper stopping frame and the lower stopping frame, and the limiting hole and the limiting column are used for limiting the braking positions of the upper stopping frame and the lower stopping frame. The utility model provides a stop frame can realize effectively that connection piece and book core top separate, prevents that the welding slag from getting into to roll up the core and arousing the short circuit, and fixed roll core prevents to rock simultaneously.

Drawings

Fig. 1 is a schematic structural view of an upper stop frame in an insulation stop frame of a square-shell lithium battery provided by the present invention;

fig. 2 is a schematic structural view of a lower locking frame in an insulation locking frame of a square-shell lithium battery provided by the utility model.

Detailed Description

Referring to fig. 1 and 2, the utility model provides an insulation stop frame for square shell lithium battery, comprising an upper stop frame 1 and a lower stop frame 2 which are buckled together;

the upper stop moving frame 1 comprises an upper stop moving frame body 11, and two pole holes 12 for the battery pole to pass through are formed in the upper stop moving frame body 11.

The lower stopping frame 2 comprises a lower stopping frame body 21, two welding slag grooves 22 used for collecting welding slag are arranged on one side, close to the upper stopping frame 1, of the lower stopping frame body 21, and the two welding slag grooves 22 and the two pole column holes 12 are arranged in a one-to-one correspondence mode.

The utility model discloses in, utmost point post hole 12 is used for electric core utmost point post to pass, with connection piece laser welding, welding slag groove 22 is used for collecting connection piece and utmost point post laser welding slag that falls down, prevents to get into electric core and causes the short circuit.

In this embodiment, the upper stop frame body 11 is provided with buckles 13 at two sides of the two pole holes 12. The lower stop frame body 21 is close to one side of the upper stop frame body 11 and is provided with clamping grooves 23 matched with the buckles 13 at two sides of the two welding slag grooves 22, and the two buckles 13 are respectively connected with the two clamping grooves 23 in a buckling mode. The upper stop frame 1 and the lower stop frame 2 are buckled together through the matching connection of the buckle 13 and the clamping groove 23.

In this embodiment, a plurality of limiting blocks 14 are arranged on one side of the upper stopping frame body close to the lower stopping frame body 21, and the limiting blocks 14 limit the distance between the upper stopping frame 1 and the lower stopping frame 2.

In this embodiment, the upper stop frame body is provided with a plurality of limiting holes 15, the lower stop frame body 21 is provided with a plurality of limiting posts 24 on one side close to the upper stop frame body 11, the limiting posts 24 are matched with the limiting holes 15, and the limiting posts 24 are respectively matched and clamped with the limiting holes 15. The limiting hole 15 and the limiting column 24 are used for limiting the braking positions of the upper stopping frame 1 and the lower stopping frame 2.

In this embodiment, a first explosion-proof hole 16 is disposed between the two pole holes 12 on the upper stop frame body 11, and a second explosion-proof hole 25 corresponding to the first explosion-proof hole 16 is disposed between the two slag welding grooves 22 on the lower stop frame body 21. The first explosion-proof hole 16 and the second explosion-proof hole 25 are used for air outlet of the cell explosion-proof valve.

In this embodiment, the upper stop motion frame body 11 is provided with a liquid injection hole 17; the liquid injection hole 17 is used for injecting liquid into the battery cell through the stop frame.

The utility model provides a stop frame, upper stop frame 1 is fixed on the apron, the core of the connection piece that will weld carries out laser welding with apron utmost point post, stop frame 2 under the installation, spacing hole 15 and spacing post 24 let upper and lower stop frame just align, buckle 13 corresponds with draw-in groove 23, press down gently, buckle 13 gets into draw-in groove 23 and locks lower stop frame 2, stopper 14, spacing hole 15 on upper stop frame 2 and spacing post 24 on lower stop frame 2 limit upper stop frame 1 and lower stop frame 2 intermediate distance jointly, prevent to have the destruction to connection piece and core utmost point ear, welding slag groove 21 of lower stop frame 2 just in time corresponds below the laser welding, receive the tiny welding slag that the laser welding falls; after the winding core is combined into the periphery of the shell and welded, the stopping frame is just between the winding core and the cover plate, and the winding core is prevented from shaking.

The above, only be the concrete implementation of the preferred embodiment of the present invention, but the protection scope of the present invention is not limited thereto, and any person skilled in the art is in the technical scope of the present invention, according to the technical solution of the present invention and the utility model, the concept of which is equivalent to replace or change, should be covered within the protection scope of the present invention.

Claims

1. An insulation stop frame of a square shell lithium battery is characterized by comprising an upper stop frame (1) and a lower stop frame (2) which are buckled together;

the upper stop moving frame (1) comprises an upper stop moving frame body (11), and two pole column holes (12) for the pole columns of the battery cell to pass through are formed in the upper stop moving frame body (11);

the lower stopping frame (2) comprises a lower stopping frame body (21), two welding slag grooves (22) used for collecting welding slag are arranged on one side, close to the upper stopping frame (1), of the lower stopping frame body (21), and the two welding slag grooves (22) are in one-to-one correspondence with the two pole column holes (12).

2. The insulation stop frame for the square lithium battery with the shell as claimed in claim 1, wherein the upper stop frame body (11) is provided with a buckle (13) at the two sides of the two pole holes (12); the lower stopping frame body (21) is close to one side of the upper stopping frame body (11) and is positioned at two sides of the two welding slag grooves (22), clamping grooves (23) matched with the buckles (13) are formed in the two sides of the lower stopping frame body, and the two buckles (13) are respectively connected with the two clamping grooves (23) in a buckling mode.

3. The insulation stopper of a square-shaped lithium battery pack as claimed in claim 1, wherein the upper stopper body is provided with a plurality of stoppers (14) at a side thereof adjacent to the lower stopper body (21).

4. The insulation stop frame for the square-shell lithium battery according to any one of claims 1-3, wherein a plurality of limiting holes (15) are formed in the upper stop frame body, a plurality of limiting posts (24) are formed on one side, close to the upper stop frame body (11), of the lower stop frame body (21), the limiting posts (24) are matched with the limiting holes (15), and the limiting posts (24) are respectively matched and clamped with the limiting holes (15).

5. The insulation stopper of a square-shaped lithium battery pack according to any one of claims 1 to 3, wherein a first explosion-proof hole (16) is formed in the upper stopper body (11) at a position between the two post holes (12), and a second explosion-proof hole (25) corresponding to the first explosion-proof hole (16) is formed in the lower stopper body (21) at a position between the two welding slag grooves (22).

6. The insulation stopper of a square-shelled lithium battery according to any one of claims 1 to 3, wherein the upper stopper body (11) is provided with a liquid injection hole (17).