CN220971239U

CN220971239U - Battery cell welding fixture

Info

Publication number: CN220971239U
Application number: CN202322474968.5U
Authority: CN
Inventors: 王丽; 李德治; 方斌
Original assignee: Jiangsu Zenio New Energy Battery Technologies Co Ltd
Current assignee: Jiangsu Zenio New Energy Battery Technologies Co Ltd
Priority date: 2023-09-12
Filing date: 2023-09-12
Publication date: 2024-05-17
Anticipated expiration: 2033-09-12

Abstract

The utility model relates to a battery cell welding fixture, comprising: a substrate; the limiting assembly comprises a plurality of stop blocks, the stop blocks are respectively and movably arranged on the substrate, and a space for accommodating the battery cell is formed between the stop blocks; the pressing assembly is located on one side of the substrate and comprises a sliding rail, a sliding block and a pressing block, the sliding block is located on the sliding rail and can move along the sliding rail, the pressing block is arranged on the sliding block and is used for propping against the rotating sheet and/or the lug. The welding fixture is high in compatibility, the welding fixture does not need to be replaced frequently, the polar lugs can be prevented from shaking, the welding precision is improved, and the cost is reduced.

Description

Battery cell welding fixture

Technical Field

The utility model relates to the technical field of battery cell welding, in particular to a battery cell welding fixture.

Background

In the production and processing process of the battery, after the preparation of the battery core is completed, two adapter pieces are required to be welded on the anode lug and the cathode lug respectively.

The conventional welding action is as follows: the bare cell is arranged on an anode welding fixture, then the switching sheet is arranged on an anode tab, and welding is started; after the anode welding is completed, the battery core needs to be transferred into a cathode welding fixture, and the welding is started. In this welding process, the following technical drawbacks exist:

On one hand, the existing welding fixture is only applicable to one type of battery cell, if the battery cells with different specifications are replaced, the welding fixture needs to be replaced frequently, the cost is high, and in the welding process, the welding fixtures of the anode and the cathode are replaced;

On the other hand, in the process that the battery cell moves from the anode welding fixture to the cathode welding fixture, the battery cell pole piece can be caused to shake, and the welding quality is affected.

Disclosure of utility model

Therefore, the technical problems to be solved by the utility model are to overcome the technical defects that in the prior art, the cathode and anode welding clamp needs to be replaced, the cost is high, and the electrode plate of the battery cell can shake due to the movement of the battery cell, so that the welding quality is affected.

In order to solve the technical problems, the utility model provides a battery cell welding fixture, which comprises: a substrate;

The limiting assembly comprises a plurality of stop blocks, the stop blocks are respectively and movably arranged on the substrate, and a space for accommodating the battery cell is formed between the stop blocks;

The pressing assembly is located on one side of the substrate and comprises a sliding rail, a sliding block and a pressing block, the sliding block is located on the sliding rail and can move along the sliding rail, the pressing block is arranged on the sliding block and is used for pressing the switching piece and/or the lug.

In one embodiment of the utility model, an air flow channel is arranged in the pressing block, an opening at one end of the air flow channel is connected with a negative pressure system, and an opening at the other end of the air flow channel is arranged towards the welding end of the tab.

In one embodiment of the utility model, a pipe body is arranged in the air flow channel, one end of the pipe body is connected with the negative pressure system, and the other end of the pipe body is arranged towards the welding end of the tab.

In one embodiment of the utility model, the base plate is provided with a plurality of first mounting holes, and the stop block is mounted on the first mounting holes through the locking piece; the plurality of first mounting holes are arranged in an array.

In one embodiment of the utility model, a second mounting hole is formed in the position, corresponding to the first mounting hole, of the stop block, and the locking piece is arranged in the first mounting hole and the second mounting hole in a penetrating manner to achieve fixation.

In one embodiment of the utility model, the locking member is a bolt, screw or dowel.

In one embodiment of the utility model, the base plate is provided with a handle.

In one embodiment of the utility model, the pressing block is clamped with the sliding block, a clamping groove is formed in the back surface of the pressing block, a protruding portion is arranged on the sliding block, and the protruding portion is clamped in the clamping groove.

In one embodiment of the utility model, a reference surface is arranged on the substrate, the side surface of the battery cell where the tab is located abuts against the reference surface, and the reference surface is positioned on one side of the substrate close to the sliding rail.

In one embodiment of the utility model, a sliding groove is formed in the sliding rail, one end of the sliding block is arranged in the sliding groove, and the sliding block is fixed with the sliding rail through a positioning block.

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

1. According to the utility model, the battery cell is arranged on the substrate, a space for accommodating the battery cell is formed by the plurality of stop blocks, and the battery cell is positioned on the substrate, so that after the position of the battery cell is fixed, the slide block is moved along the slide rail, so that the slide block is positioned on the tab side of the battery cell, the pressing block on the slide block is pressed on the switching piece or on the switching piece and the tab, and then the tab and the switching piece are welded and fixed.

2. The limiting assembly is arranged, so that the limiting assembly can be suitable for battery cells with different sizes, the position of the stop block is adjusted according to the size of the battery cells, the application range is wide, the limiting assembly is compatible with battery cells with different types, and the mold changing time and cost are reduced.

3. The utility model can adapt to the battery cores with different specifications due to the arrangement of the pressing assembly, the pressing block can be adjusted according to the position of the tab, and the use of the sliding block and the sliding rail can improve the adjustment precision.

4. In the welding process of the cathode lug, the anode lug and the switching piece, the battery core is not required to be moved, and only the welding fixture is required to be integrally moved, so that the problem of pole piece shaking in the transferring process is solved, and the reject ratio is reduced from 2% to 0%.

5. According to the utility model, after the switching piece is manually placed, the switching piece or the lug is pressed by the pressing block, so that the distance between the switching piece and the root of the lug is ensured to be unchanged in the subsequent welding process.

6. The cathode and anode of the battery cell are welded by using the same fixture, so that the feeding auxiliary time is reduced, and the cost is reduced.

Drawings

In order that the utility model may be more readily understood, a more particular description of the utility model will be rendered by reference to specific embodiments thereof that are illustrated in the appended drawings.

FIG. 1 is a schematic diagram of a first embodiment of the present utility model;

FIG. 2 is an enlarged view of the structure of FIG. 1 in area A;

FIG. 3 is a second schematic diagram of the structure of the present utility model;

Fig. 4 is a schematic structural view of the briquette.

Description of the specification reference numerals: 10. a battery cell; 11. a tab; 12. a transfer sheet; 20. a substrate; 21. a first mounting hole; 22. a tank body; 221. a reference surface; 30. a stop block; 31. a second mounting hole; 40. a slide rail; 50. briquetting; 51. a clamping groove; 60. a slide block; 70. a tube body; 80. a handle.

Detailed Description

The present utility model will be further described with reference to the accompanying drawings and specific examples, which are not intended to be limiting, so that those skilled in the art will better understand the utility model and practice it.

Referring to fig. 1-4, the utility model discloses a die bonding fixture, which comprises a substrate 20, a limiting assembly and a pressing assembly.

The substrate 20, the substrate 20 may be rectangular, and the substrate 20 is horizontally disposed.

The limiting assembly comprises a plurality of stoppers 30, the stoppers 30 are respectively movably arranged on the substrate 20, and spaces for accommodating the battery cells 10 are formed between the stoppers 30. Through the cooperation of a plurality of dogs 30, can carry out spacing to electric core 10, because a plurality of dogs 30 are portable, can adapt to not unidimensional electric core 10.

The pressing assembly is located on one side of the substrate 20, the pressing assembly comprises a sliding rail 40, a sliding block 60 and a pressing block 50, the sliding block 60 is located on the sliding rail 40 and can move along the sliding rail 40, the pressing block 50 is arranged on the sliding block 60, and the pressing block 50 is used for pressing the switching piece 12 and/or the lug 11. Because the sizes of the battery cells 10 are different, the positions of the corresponding electrode lugs 11 are also different, and the sliding blocks 60 can move along the sliding rails 40, so that the movement of the pressing blocks 50 can be realized, and the battery cells 10 with different sizes or different specifications are adapted. The pressing block 50 is used for pressing the switching piece 12 and/or the tab 11, so that the switching piece 12 and the tab 11 are fixed in position, and welding precision between the switching piece 12 and the tab 11 is ensured.

The working principle of the utility model is as follows: the battery cell 10 is placed on the substrate 20, a space for accommodating the battery cell 10 is formed by the plurality of stop blocks 30, and the battery cell 10 is positioned on the substrate 20, so that after the position of the battery cell 10 is fixed, the slide block 60 is positioned on the tab 11 side of the battery cell 10 by moving the slide block 60 along the slide rail 40, the pressing block 50 on the slide block 60 is pressed on the switching piece 12 or on the switching piece 12 and the tab 11, and then the tab 11 and the switching piece 12 are welded and fixed.

The utility model has the following advantages:

Firstly, the limiting component is arranged, so that the limiting component can be suitable for the battery cells 10 with different sizes, the position of the stop block 30 is adjusted according to the size of the battery cells 10, the application range is wide, the battery cells 10 with different types are compatible, and the mold changing time and cost are reduced;

Secondly, the utility model can adapt to the battery cores 10 with different specifications due to the arrangement of the pressing assembly, the pressing block 50 can be adjusted according to the position of the tab 11, and the use of the sliding block 60 and the sliding rail 40 can improve the adjustment precision;

Thirdly, in the welding process of the cathode lug, the anode lug and the switching piece 12, the battery cell 10 is not required to be moved, and only the welding fixture is required to be integrally moved, so that the problem of pole piece shaking in the transferring process is solved, and the reject ratio is reduced from 2% to 0%;

Fourthly, after the switching piece 12 is manually placed, the switching piece 12 or the tab 11 is pressed by the pressing block 50, so that the distance between the switching piece 12 and the root of the tab 11 is ensured to be unchanged in the subsequent welding process;

Fifthly, the cathode and anode of the battery cell 10 are welded by using the same fixture, so that the feeding auxiliary time is reduced, and the cost is reduced.

Further, in the welding process of the adapter piece 12 and the tab 11, welding slag and smoke dust are easy to generate, and the environment is influenced. Due to the arrangement of the airflow channel, before welding, the welding position of the tab 11 can be vacuumized to remove dust, and after welding is finished, the welding slag is vacuumized and adsorbed. For the air flow channel, there are at least two arrangements:

Firstly, a through hole is formed in the pressing block 50, one end of the through hole is arranged towards the welding end of the lug 11, and the other end of the through hole can be connected with a negative pressure system through a hose, so that smoke dust and welding slag can be adsorbed by the through hole when the negative pressure system generates negative pressure;

Secondly, a pipe body 70 is arranged in the pressing block 50, one end of the pipe body 70 is connected with a negative pressure system, and the other end of the pipe body 70 is arranged towards the welding end of the lug 11, so that the pipe body 70 can continuously adsorb welding slag and smoke dust under the action of the negative pressure system.

In the utility model, the pressing block 50 presses the cathode and anode lugs 11 at the same time, so that the consistency of the distance between the front and rear transfer sheets 12 and the root of the lug 11 is ensured. The pressing block 50 can press all the battery cells 10 with the electrode lugs 11 at intervals of 0-125mm, so that the mold changing time and the cost are reduced.

The base plate 20 is provided with a plurality of first mounting holes 21, and the stopper 30 is mounted on the first mounting holes 21 by a locking member. The plurality of mounting holes 21 are arranged in an array. Since the first mounting holes 21 have a plurality of holes, the plurality of stoppers 30 can be fixed, and the plurality of mounting holes 21 are arranged in an array, i.e. the positions of the stoppers 30 can be conveniently adjusted, so that the battery cells 10 with different sizes and specifications can be adapted.

The second mounting hole 31 is formed in the position, corresponding to the first mounting hole 21, on the stop block 30, and the locking piece penetrates through the first mounting hole and the second mounting hole 31 to be fixed. Specifically, the first mounting hole 21 and the second mounting hole 31 may each have two. And the locking member may be a bolt, screw or dowel.

Further, the second mounting hole 31 may be a kidney-shaped hole, and the first mounting hole 21 may be a circular hole. By providing kidney-shaped holes, fine adjustment of the position of the stopper 30 can be achieved.

Specifically, the left side, the right side and the non-lug 11 side of the battery cell 10 are both provided with adjustable stop blocks 30, two rows of M4 threaded holes, namely first mounting holes 21 are formed in the clamp, the gap between the adjacent first mounting holes 21 is 10mm, the stop blocks 30 are matched with waist-shaped counter-sunk holes, the stop blocks 30 are moved according to the width and the length of the battery cell 10 and locked on the threaded holes of the base plate 20, the width of the battery cell can be compatible with 51-125mm, the length of the battery cell 10 can be compatible with 129-159mm, and the positioning switching before different types of battery cells 10 is facilitated.

A handle 80 is provided on the base plate 20. By arranging the handle 80, the whole jig is convenient to move.

The pressing block 50 is clamped with the sliding block 60, a clamping groove 51 is formed in the back face of the pressing block 50, a protruding portion is arranged on the sliding block 60, and the protruding portion is clamped in the clamping groove 51. The slider 60 clamping groove 51 on the back of the lug 11 pressing block 50 is convenient for installing the lug 11 pressing block 50 on the slider 60, the lug 11 pressing block 50 can move in the X-axis direction according to the distance between the lugs 11, the dust removal pipeline opening also moves along with the lug 11 pressing block 50, and foreign matters on the lug 11 and welded welding slag are adsorbed more specifically.

The press block 50 moves in the X-axis direction according to the position of the tab 11, the tab 11 press block 50 is connected with the slide block 60 through the clamping groove 51 on the back of the tab 11 press block 50, the 7X 3mm thick slide block 60 clamping groove 51 with the thickness of 0.2mm is milled on the back of the tab 11 press block 50, the slide block 60 drives the tab 11 press block 50 to move on the slide rail 40, the movable length of the slide rail 40 is 149mm, the battery core 10 with the spacing of 0-125mm between the tabs 11 can be pressed, the slide rail 40 is arranged on a welding fixture installation large plate and does not move along with the welding fixture, when the welding fixture is moved to a cathode welding seat after anode welding is completed, the tab 11 press block 50 needs to be taken away, and the slide block 60 clamping groove 51 on the back of the tab 11 press block 50 is arranged on a new slide block 60 for adjustment movement.

The base plate 20 is provided with a reference surface 221, and the side surface of the cell 10 where the tab 11 is located abuts against the reference surface 221. The reference surface 221 is located on a side of the substrate 20 near the sliding rail 40.

In an embodiment, the upper surface of the substrate 20 is a plane, and a step surface, that is, a reference surface 221 is disposed on the substrate 20 near the sliding rail, and by abutting the end surface of the tab side of the battery cell 10 against the reference surface 221, the root of the tab 11 is aligned with the reference surface 221, so as to improve the subsequent welding precision.

In another embodiment, a groove 22 is disposed on the substrate 20, the limiting component is disposed in the groove 22, and the non-tab side positioning of the battery cell 10 is achieved by matching a plurality of stoppers 30 of the limiting component, and the end face of the tab 11 of the battery cell 10 abuts against the inner sidewall of the groove 22, so that the root of the tab 11 can be aligned with the reference surface 221, thereby improving the subsequent welding precision.

Specifically, a reference surface 221 with a height of 1.5mm is arranged on the tab 11 side of the battery cell 10, so that the position of the tab 11 side of the battery cell 10 can be conveniently positioned.

The slide rail 40 is provided with a slide groove, one end of the slide block 60 is arranged in the slide groove, and the slide block 60 and the slide rail 40 are fixed through a positioning block.

The operation steps of the utility model are as follows:

1. The first step: the battery cell 10 is placed in a welding fixture, and the x-axis and the Y-axis are limited by a stop block 30;

2. And a second step of: the switching piece 12 is placed on the anode tab 11, a square groove on the back surface of the pressing block 50 of the tab 11 is clamped on the sliding block 60, the switching piece moves according to the position of the tab 11, the tab 11 is pressed, and the starting key is pressed for welding;

3. And a third step of: after the anode welding is finished, the clamp is placed below a cathode welding machine;

4. fourth step: the switching piece 12 is placed on the cathode tab 11, the square groove on the back surface of the pressing block 50 of the tab 11 is clamped on the sliding block 60, the switching piece moves according to the position of the tab 11, the tab 11 is pressed, and the starting key is pressed for welding.

It is apparent that the above examples are given by way of illustration only and are not limiting of the embodiments. Other variations and modifications of the present utility model will be apparent to those of ordinary skill in the art in light of the foregoing description. It is not necessary here nor is it exhaustive of all embodiments. While still being apparent from variations or modifications that may be made by those skilled in the art are within the scope of the utility model.

Claims

1. A die bonding fixture, comprising:

A substrate (20);

The limiting assembly comprises a plurality of stop blocks (30), the stop blocks (30) are respectively and movably arranged on the base plate (20), and a space for accommodating the battery cell (10) is formed between the stop blocks (30);

the pressing assembly is located on one side of the substrate (20), the pressing assembly comprises a sliding rail (40), a sliding block (60) and a pressing block (50), the sliding block (60) is located on the sliding rail (40) and can move along the sliding rail (40), the pressing block (50) is arranged on the sliding block (60), and the pressing block (50) is used for pressing the rotating sheet (12) and/or the lug (11).

2. The die bonding fixture according to claim 1, wherein an air flow channel is arranged in the pressing block (50), an opening at one end of the air flow channel is connected with a negative pressure system, and an opening at the other end of the air flow channel is arranged towards the bonding end of the tab (11).

3. The cell welding fixture according to claim 2, wherein a pipe body (70) is arranged in the air flow channel, one end of the pipe body (70) is connected with a negative pressure system, and the other end of the pipe body (70) is arranged towards the welding end of the tab (11).

4. The die bonding fixture according to claim 1, wherein a plurality of first mounting holes (21) are formed in the base plate (20), and the stopper (30) is mounted on the first mounting holes (21) through a locking member; the plurality of first mounting holes (21) are arranged in an array.

5. The die bonding fixture according to claim 4, wherein a second mounting hole (31) is formed in the stopper (30) at a position corresponding to the first mounting hole (21), and the locking member is inserted into the first mounting hole (21) and the second mounting hole (31) to achieve fixation.

6. The die bonding fixture according to claim 5, wherein the locking member is a bolt, a screw, or a dowel.

7. The die bonding fixture according to claim 1, wherein a handle (80) is provided on the base plate (20).

8. The die bonding fixture according to claim 1, wherein the pressing block (50) is clamped with the sliding block (60), a clamping groove (51) is formed in the back surface of the pressing block (50), a protruding portion is arranged on the sliding block (60), and the protruding portion is clamped in the clamping groove (51).

9. The battery cell welding fixture according to claim 1, wherein a reference surface (221) is arranged on the substrate (20), the side surface of the battery cell (10) where the tab (11) is located abuts against the reference surface (221), and the reference surface (221) is located on one side of the substrate (20) close to the sliding rail (40).

10. The die-bonding jig according to claim 1, wherein a slide groove is provided on the slide rail (40), one end of the slider (60) is provided in the slide groove, and the slider (60) is fixed to the slide rail (40) through a positioning block.