Sectional type tab welding tool

Abstract

The sectional type tab welding tool comprises a tab pressing head, a pressing head fixing seat, a spring, a fixing seat connecting plate, a fixing seat connecting bolt, an air cylinder connecting block and a pressing head fixing bolt, and a plurality of spaced pressing head parts are formed on the surface, facing the pressing head fixing seat, of the tab pressing head in a protruding mode. A pressure head moving groove matched with the pressure head part is formed in the surface, facing the tab pressure head, of the pressure head fixing seat in a sunken mode, the pressure head part of the tab pressure head is installed in the pressure head moving groove after the spring is installed in the tab pressure head, and a pressure head fixing bolt is installed in the surface, away from the tab pressure head, of the pressure head fixing seat; the pressing head fixing bolt penetrates through the spring and then is screwed on the pressing head part, the fixing seat connecting plate is installed on the surface, away from the tab pressing head, of the pressing head fixing seat through the fixing seat connecting bolt, and the air cylinder connecting block is installed on the surface, away from the pressing head fixing seat, of the fixing seat connecting plate through a bolt. According to the utility model, the tab pressing head is used for pressing separately, so that no gap is formed between the tab and the busbar.

Description

Technical fields:

[0001] This utility model relates to a segmented electrode welding fixture, which belongs to the field of electrode welding technology for new energy soft-pack modules. Background technology:

[0002] Currently, the tab welding process for soft-pack modules uses a galvanometer-type laser welding machine. The direction and focus of the laser beam are controlled by adjusting the galvanometer. The galvanometer allows for rapid adjustment and high-frequency scanning, enabling precise focusing of the laser beam within the welding area, thus achieving high-speed and fine welding. The busbar and battery cell tabs are welded together using the galvanometer welding machine. During welding, it is crucial to ensure the effective weld length and that the weld appearance is free of defects such as incomplete welds or burn-through, to meet the module's current carrying capacity. One factor affecting the welding effect is the presence of a gap between the tab and the busbar. Therefore, this segmented tab welding head is designed to press the tab and busbar tightly together, ensuring a zero gap between them. Utility model content:

[0003] This utility model provides a segmented electrode welding fixture to solve the problems existing in the prior art. The segmented electrode welding fixture is used to press the busbar. Each segment of the pressing head is equipped with a spring and can be pressed separately. If the busbar is bent, each segment of the pressing head will press the electrode separately to ensure that there is no gap between the electrode and the busbar.

[0004] The technical solution adopted in this utility model is as follows: a segmented electrode tab welding fixture, including an electrode tab pressure head, a pressure head fixing seat, a spring, a fixing seat connecting plate, a fixing seat connecting bolt, a cylinder connecting block, and a pressure head fixing bolt. The electrode tab pressure head has a plurality of spaced-apart pressure heads protruding on the surface facing the pressure head fixing seat. The pressure head fixing seat has a pressure head movement groove that mates with the pressure heads recessed on the surface facing the electrode tab pressure head. The spring is installed in the electrode tab pressure head, and the pressure heads of the electrode tab pressure head are installed in the pressure head movement groove. A pressure head fixing bolt is installed on the surface of the pressure head fixing seat away from the electrode tab pressure head. The pressure head fixing bolt passes through the spring and is tightened onto the pressure head. The fixing seat connecting plate is installed on the surface of the pressure head fixing seat away from the electrode tab pressure head by the fixing seat connecting bolt. The cylinder connecting block is installed on the surface of the fixing seat connecting plate away from the pressure head fixing seat by bolts.

[0005] Furthermore, a guide hole is formed on the pressure head, and the guide hole is a threaded hole.

[0006] Furthermore, a through hole is formed on the pressure head fixing seat at the position of the pressure head movement groove, penetrating the pressure head fixing seat.

[0007] Furthermore, after the spring is installed in the guide hole of the tab head, the head fixing bolt passes through the through hole and the spring and is screwed into the guide hole of the head to install the tab head and the head fixing seat together.

[0008] Furthermore, an opening is formed in the middle of the pressure head limiting block, and the end of the electrode pressure head that is not installed in the pressure head movement groove extends beyond the pressure head limiting block after passing through the opening.

[0009] Furthermore, the pressure head fixing seat has connection holes on both sides for connecting protective nitrogen gas.

[0010] This utility model has the following beneficial effects:

[0011] (1) This utility model uses a tab press head to press separately to ensure that there is no gap between the tab and the busbar;

[0012] (2) Use a spring of appropriate force to press it down, so as to buffer the product and prevent it from being crushed;

[0013] (3) A protective nitrogen connection hole is reserved to make the welding surface smoother during welding. Attached image description:

[0014] Figure 1 This is a schematic diagram of the segmented electrode tab welding fixture of this utility model.

[0015] Figure 2 This is a schematic diagram of the electrode pressure head.

[0016] Figure 3 This is a schematic diagram of the installation of the electrode head and the head fixing seat. Detailed implementation method:

[0017] The present invention will be further described below with reference to the accompanying drawings.

[0018] This utility model of segmented electrode welding fixture includes an electrode pressure head 1, a pressure head fixing seat 2, a spring 3, a fixing seat connecting plate 4, a fixing seat connecting bolt 5, a cylinder connecting block 6, and a pressure head limiting block 7.

[0019] The electrode head 1 has several spaced-apart pressure heads 10 protruding from its surface facing the pressure head fixing seat 2. The pressure heads 10 have guide holes 100 formed on them, and the guide holes 100 are threaded holes.

[0020] The pressure head fixing seat 2 has a recessed groove 20 on the surface facing the electrode head 1, which is in contact with the pressure head 10. The pressure head fixing seat 2 has a through hole 21 at the position of the pressure head movement groove 20.

[0021] After the spring 3 is installed in the guide hole 100 of the tab head 1, the pressure head 10 of the tab head 1 is installed in the pressure head movement groove 20. Then, the pressure head fixing bolt 8 is installed from the surface of the pressure head fixing seat 2 away from the tab head 1. The pressure head fixing bolt 8 passes through the through hole 21 and the spring 3 and is screwed into the guide hole 100 of the pressure head 10, thereby installing the tab head 1 and the pressure head fixing seat 2 together.

[0022] The fixed base connecting plate 4 is installed onto the surface of the pressure head fixed base 2 away from the electrode tab pressure head 1 by the fixed base connecting bolts 5. The cylinder connecting block 6 is installed onto the surface of the fixed base connecting plate 4 away from the pressure head fixed base 2 by bolts.

[0023] An opening 70 is formed in the middle of the pressure head limiting block 7. The end of the electrode pressure head 1 that is not installed in the pressure head movement groove 20 passes through the opening 70 and extends beyond the pressure head limiting block 7.

[0024] The working principle of this segmented electrode welding fixture is as follows:

[0025] (1) Install the spring 3 in the guide hole 100 of the electrode head 1;

[0026] (2) Install the assembled electrode head 1 on the head fixing seat 2. The head fixing seat 2 is provided with a number of head movement grooves 20 to restrict the movement direction of the electrode head 1.

[0027] (3) After the electrode head is installed on the head fixing seat 2, the segmented head is locked with the head fixing bolt 4 to prevent the head from popping out.

[0028] (4) Attach the pressure head limiting block 7 to the outside of the electrode pressure head 1 to ensure the neatness of the electrode pressure head 1 extending outwards;

[0029] (5) The pressure head fixing seat 2 has connection holes 22 on both sides for connecting protective nitrogen gas. Nitrogen gas is blown during welding to prevent oxidation.

[0030] (6) The pressure head fixing seat 2 is connected to the fixing seat connecting plate 4 by the fixing seat connecting bolt 5;

[0031] (7) The fixed base connecting plate 4 and the cylinder connecting block 6 are connected by bolts;

[0032] (8) The cylinder connecting block 6 connects the various components on it to the cylinder with bolts, and the cylinder drives the electrode head 1 to press the electrode.

[0033] The above description is only a preferred embodiment of the present utility model. It should be noted that for those skilled in the art, several improvements can be made without departing from the principle of the present utility model, and these improvements should also be considered within the protection scope of the present utility model.

Claims

1. A segmented electrode tab welding fixture, characterized in that: The device includes an electrode head (1), a head fixing seat (2), a spring (3), a fixing seat connecting plate (4), a fixing seat connecting bolt (5), a cylinder connecting block (6), a head limiting block (7), and a head fixing bolt (8). The electrode head (1) has several spaced-apart head protrusions on its surface facing the head fixing seat (2). The head fixing seat (2) has recesses on its surface facing the electrode head (1) forming head movement grooves (20) that mate with the head protrusions (10). The spring (3) is installed in the electrode head (1). Then, the pressure head (10) of the electrode pressure head (1) is installed in the pressure head movement groove (20). A pressure head fixing bolt (8) is installed on the surface of the pressure head fixing seat (2) away from the electrode pressure head (1). The pressure head fixing bolt (8) passes through the spring (3) and is tightened on the pressure head (10). The fixing seat connecting plate (4) is installed on the surface of the pressure head fixing seat (2) away from the electrode pressure head (1) by the fixing seat connecting bolt (5). The cylinder connecting block (6) is installed on the surface of the fixing seat connecting plate (4) away from the pressure head fixing seat (2) by bolts.

2. The segmented electrode tab welding fixture as described in claim 1, characterized in that: The pressure head (10) has a guide hole (100), which is a threaded hole.

3. The segmented electrode welding fixture as described in claim 2, characterized in that: The pressure head fixing seat (2) has a through hole (21) formed at the position of the pressure head movement groove (20).

4. The segmented electrode welding fixture as described in claim 3, characterized in that: After the spring (3) is installed in the guide hole (100) of the tab head (1), the head fixing bolt (8) passes through the through hole (21) and the spring (3) and is screwed into the guide hole (100) of the head head (10) to install the tab head (1) and the head fixing seat (2) together.

5. The segmented electrode tab welding fixture as described in claim 4, characterized in that: An opening (70) is formed in the middle of the pressure head limiting block (7), and the end of the electrode pressure head (1) that is not installed in the pressure head movement groove (20) extends out of the pressure head limiting block (7) after passing through the opening (70).

6. The segmented electrode welding fixture as described in claim 5, characterized in that: The pressure head fixing seat (2) has connection holes (22) on both sides for connecting protective nitrogen gas.

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