Double-station spot welding equipment

Abstract

The utility model relates to the field of battery cell spot welding equipment, in particular to double-station spot welding equipment which comprises a carrier plate, an XYZ three-axis moving module and a rotating motor, a rotating air cylinder is arranged on the carrier plate and used for controlling a battery cell jig to rotate in the horizontal direction, and the output end of the rotating motor is connected with the carrier plate. And the rotating motor is used for controlling the battery cell jig to rotate in the vertical direction. Through the arrangement of the rotating air cylinder and the rotating motor, during spot welding, the spot welding machine only needs to be horizontally moved and lifted, and compared with the prior art that a rotating mechanism is arranged to control the spot welding machine to rotate around the battery cell jig, the rotating air cylinder and the rotating motor are used for controlling the battery cell jig to rotate; therefore, spot welding holes in all the faces of the battery cell jig face the spot welding head to facilitate spot welding, the moving range of the spot welding machine is small, the length needed by spot welding cables is shortened, energy consumption is reduced, the winding problem caused by the fact that the spot welding cables are too long is avoided, and the spot welding effect is improved.

Description

Technical Field

[0001] This utility model relates to the field of battery cell spot welding equipment, specifically to a dual-workstation spot welding equipment. Background Technology

[0002] Currently, battery packs on the market consist of battery cells, a protection board connected to the battery cells, and an outer casing that covers the battery cells and the protection board. A crucial step in battery manufacturing is spot-welding the protection board to the positive and negative electrodes of the battery cells. The protection board has nickel strips, which are spot-welded to the positive and negative electrodes of the battery cells during processing.

[0003] In existing technologies, battery cells are typically placed inside a battery cell fixture, and then a dedicated spot welding mechanism is used to spot weld the battery cells. The battery cell fixture has spot welding holes corresponding to the welding points on the battery cells. The spot welding mechanism is moved and lifted by an XYZ three-axis moving module. However, since the spot welding holes on the battery cell fixture are located on more than one surface of the fixture, in order to spot weld each spot welding hole, a dedicated rotation mechanism needs to be set up on the XYZ three-axis moving module to control the spot welding mechanism to rotate around the battery cell fixture in the vertical and horizontal directions. The rotation range of the spot welding mechanism is too large, which requires a very long spot welding cable, increasing energy consumption. Furthermore, excessively long spot welding cables are prone to tangling, affecting the spot welding process. Utility Model Content

[0004] The technical solution adopted by this utility model to solve its technical problem is: to provide a dual-site welding device, comprising:

[0005] The carrier plate is provided in two. The carrier plate is used to place the battery cell fixture. The battery cell fixture is provided with a number of spot welding holes. A rotary cylinder is provided on the carrier plate. The output end of the rotary cylinder is connected to the battery cell fixture. The rotary cylinder is used to control the battery cell fixture to rotate in the horizontal direction.

[0006] The XYZ three-axis moving module has a spot welding motor at its output end and a spot welding head at its output end. The XYZ three-axis moving module is used to control the movement of the spot welding head.

[0007] A rotary motor, the output end of which is connected to the carrier plate, is used to control the cell fixture to rotate in the vertical direction.

[0008] Furthermore, the carrier plate is provided with a mounting bracket, the output end of the rotary cylinder is connected to the mounting bracket, the mounting bracket is provided with a positioning hole, and the battery cell fixture is provided with a positioning rod. When the battery cell fixture is placed into the mounting bracket, the positioning rod is inserted into the positioning hole.

[0009] Furthermore, the carrier plate is also provided with a positioning cylinder, and the mounting bracket is provided with multiple limiting holes one corresponding to the output end of the positioning cylinder. The carrier plate is provided with limiting holes two corresponding to the limiting holes one. When the battery cell fixture rotates to the point where the spot welding hole on the corresponding surface faces the spot welding head, the output shaft of the positioning cylinder passes through the corresponding limiting holes one and the limiting holes two.

[0010] Furthermore, the battery cell fixture is provided with a mounting groove, and the mounting bracket is provided with a mounting protrusion that matches the mounting groove. The battery cell fixture is installed into the mounting bracket along the mounting protrusion.

[0011] Furthermore, it also includes a lifting cylinder, the output end of which is connected to the rotary motor, and the lifting cylinder is used to control the lifting of the rotary motor.

[0012] Furthermore, it also includes a rack for carrying the various components, the rack being equipped with a cooling fan.

[0013] The beneficial effects of this utility model are as follows: It provides a dual-workstation spot welding device, including a carrier plate, an XYZ three-axis moving module, and a rotary motor. A rotary cylinder is mounted on the carrier plate, and the output end of the rotary cylinder is connected to a battery cell fixture. The rotary cylinder controls the rotation of the battery cell fixture in the horizontal direction. A spot welding motor is mounted on the output end of the XYZ three-axis moving module, and the output end of the rotary motor is connected to the carrier plate. The rotary motor controls the rotation of the battery cell fixture in the vertical direction. With the rotary cylinder and rotary motor, during spot welding, the spot welding machine only needs to perform translation and lifting. Compared to the prior art where a rotating mechanism controls the spot welding machine to move around the battery cell fixture, this utility model controls the rotation of the battery cell fixture through the rotary cylinder and rotary motor, thereby aligning the spot welding holes on each surface of the battery cell fixture towards the spot welding head for easier spot welding. The movement range of the spot welding machine is smaller, shortening the required length of the spot welding cable, thus reducing energy consumption, avoiding the tangling problem caused by excessively long spot welding cables, and improving the spot welding effect. Attached Figure Description

[0014] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0015] In the picture: Figure 1 An overall structural diagram of a dual-station welding device provided by this utility model;

[0016] Figure 2 for Figure 1 The diagram shows the three-dimensional structure of the XYZ three-axis moving module and the spot welding machine.

[0017] Figure 3 for Figure 1 A three-dimensional structural diagram of the part shown;

[0018] Figure 4 for Figure 3 Exploded view of the structure shown;

[0019] Figure 5 for Figure 3 An exploded view of the structure shown from another perspective.

[0020] Explanation of reference numerals in the attached drawings: 100, Dual-station spot welding equipment; 10, Carrier plate; 11, Rotary cylinder; 12, Mounting bracket; 121, Positioning hole one; 122, Mounting protrusion; 123, Limiting hole one; 13, Positioning cylinder; 14, Limiting hole two; 15, Support shaft; 20, XYZ three-axis moving module; 21, Spot welding motor; 22, Spot welding head; 23, Spot welding cable; 30, Rotary motor; 40, Frame; 41, Cooling fan; 50, Lifting cylinder; 200, Battery cell fixture; 201, Spot welding hole; 202, Positioning rod; 203, Mounting groove. Detailed Implementation

[0021] To make the technical problem to be solved, the technical solution, and the beneficial effects of this utility model clearer, the present utility model will now be described in detail with reference to the accompanying drawings. This drawing is a simplified schematic diagram, illustrating only the basic aspects of the present utility model, and therefore only shows the components relevant to the present utility model. Obviously, the described embodiments are only some, not all, of the embodiments of this utility model. All other embodiments obtained by those skilled in the art based on the embodiments of this utility model without creative effort are within the scope of protection of this utility model.

[0022] Please refer to Figure 1-5 This utility model provides a dual-station spot welding device 100, including a carrier plate 10, an XYZ three-axis moving module 20 and a rotary motor 30, as well as a frame 40 and a lifting cylinder 50 for supporting various components.

[0023] Specifically, the length direction of the frame 40 shown in the figure is the X-axis direction, the width direction of the frame 40 is the Y-axis direction, and the height direction of the frame 40 is the Z-axis direction.

[0024] Two carrier plates 10 are provided, and correspondingly, two rotary cylinders 11 and two rotary motors 30 are also provided. The carrier plate 10 is used to place the battery cell fixture 200. The battery cell fixture 200 is provided with several spot welding holes 201. The carrier plate 10 is provided with a rotary cylinder 11 and a support shaft 15 corresponding to the rotary cylinder 11. The output end of the rotary cylinder 11 is connected to the battery cell fixture 200. The rotary cylinder 11 is used to control the rotation of the battery cell fixture 200 in the horizontal direction. Furthermore, the rotary cylinder 11 is used to control the cell fixture 200 to rotate around the X-axis. The carrier plate 10 is provided with a mounting bracket 12. The output end of the rotary cylinder 11 and the support shaft 15 both pass through the carrier plate 10 and the mounting bracket 12 and are fixedly connected. The cell fixture 200 is placed in the mounting bracket 12, and the cell fixture 200 and the mounting bracket 12 are relatively fixed. The two end faces of the cell fixture 200 along the Z-axis direction are provided with a number of spot welding holes 201, and the spot welding holes 201 on each end face are arranged in pairs.

[0025] The XYZ three-axis moving module 20 has a spot welding motor 21 at its output end, and a spot welding head 22 at its output end. The XYZ three-axis moving module 20 is used to control the movement of the spot welding head 22, and a spot welding cable 23 is connected to the spot welding head 22. Specifically, in this embodiment, the XYZ three-axis moving module 20 uses a lead screw drive mechanism.

[0026] The output end of the rotary motor 30 is fixedly connected to the carrier plate 10. The rotary motor 30 is used to control the rotation of the battery cell fixture 200 in the vertical direction. Furthermore, the rotary motor 30 is used to control the rotation of the battery cell fixture 200 around the Z-axis.

[0027] During spot welding, the spot welding machine only needs to move horizontally and vertically. Compared with the existing technology that sets a rotating mechanism to control the spot welding machine to move around the battery cell fixture 200, in this utility model, the rotating cylinder 11 and the rotating motor 30 control the rotation of the battery cell fixture 200, so that the spot welding holes 201 on each side of the battery cell fixture 200 are oriented towards the spot welding head 22 for easy spot welding. The movement range of the spot welding machine is smaller, which shortens the required length of the spot welding cable 23, thereby reducing energy consumption, avoiding the entanglement problem caused by the excessive length of the spot welding cable 23, and improving the spot welding effect.

[0028] The mounting bracket 12 has a positioning hole 121, and the battery cell fixture 200 has a positioning rod 202. When the battery cell fixture 200 is placed into the mounting bracket 12, the positioning rod 202 is inserted into the positioning hole 121. The battery cell fixture 200 has a mounting groove 203, and the inner walls on both sides of the mounting bracket 12 along the length direction have mounting protrusions 122 that are adapted to the mounting grooves 203. The battery cell fixture 200 is installed into the mounting bracket 12 along the mounting protrusions 122. Specifically, in this embodiment, the cross-section of the mounting bracket 12 is "U" shaped, and the battery cell fixture 200 is installed into the mounting bracket 12 along the opening of the mounting bracket 12. The mounting protrusions 122 limit the battery cell fixture 200 and guide the battery cell fixture 200 into the mounting bracket 12, facilitating the installation of the battery cell fixture 200.

[0029] The carrier plate 10 is also provided with a positioning cylinder 13, and the mounting bracket 12 is provided with multiple limiting holes 123 corresponding to the output end of the positioning cylinder 13. The carrier plate 10 is provided with limiting holes 14 corresponding to the limiting holes 123. When the battery cell fixture 200 rotates to the point where the spot welding hole 201 on the corresponding surface faces the spot welding head 22, the output shaft of the positioning cylinder 13 passes through the corresponding limiting holes 123 and 14.

[0030] Specifically, in this embodiment, two limiting holes 123 and 14 are arranged side by side along the Y-axis. Taking the top surface of the battery cell fixture 200 as the front, when the front of the battery cell fixture 200 faces the spot welding head 22, the output shaft of the positioning cylinder 13 passes through one of the limiting holes and the second limiting hole 14. When the rotary cylinder 11 needs to control the rotation of the battery cell fixture 200, the output shaft of the positioning cylinder 13 moves out of the first limiting hole 123 and the second limiting hole 14. When the rotary cylinder 11 controls the battery cell fixture 200 to rotate to face the spot welding head 22, the output shaft of the positioning cylinder 13 passes through the other limiting hole 123 and the second limiting hole 14, thereby achieving the limitation of the battery cell fixture 200.

[0031] The lifting cylinder 50 is fixedly mounted on the frame 40. The output end of the lifting cylinder 50 is fixedly connected to the rotary motor 30. The lifting cylinder 50 is used to control the lifting of the rotary motor 30. The lifting cylinder 50 is used to cooperate with the XYZ three-axis moving module 20 to facilitate spot welding by the spot welding head 22.

[0032] A cooling fan 41 is provided on the rack 40. Specifically, the cooling fan 41 is located on the side of the rack 40.

Claims

1. A dual-site welding device, characterized in that, include: The carrier plate is provided in two. The carrier plate is used to place the battery cell fixture. The battery cell fixture is provided with a number of spot welding holes. A rotary cylinder is provided on the carrier plate. The output end of the rotary cylinder is connected to the battery cell fixture. The rotary cylinder is used to control the battery cell fixture to rotate in the horizontal direction. The XYZ three-axis moving module has a spot welding motor at its output end and a spot welding head at its output end. The XYZ three-axis moving module is used to control the movement of the spot welding head. A rotary motor, the output end of which is connected to the carrier plate, is used to control the cell fixture to rotate in the vertical direction.

2. The dual-site welding equipment according to claim 1, characterized in that: The carrier plate is provided with a mounting bracket, the output end of the rotary cylinder is connected to the mounting bracket, the mounting bracket is provided with a positioning hole, and the battery cell fixture is provided with a positioning rod. When the battery cell fixture is placed into the mounting bracket, the positioning rod is inserted into the positioning hole.

3. The dual-site welding equipment according to claim 2, characterized in that: The carrier plate is also provided with a positioning cylinder. The mounting bracket is provided with multiple limiting holes one corresponding to the output end of the positioning cylinder. The carrier plate is provided with limiting holes two corresponding to the limiting holes one. When the battery cell fixture rotates to the point where the spot welding hole on the corresponding surface faces the spot welding head, the output shaft of the positioning cylinder passes through the corresponding limiting holes one and two.

4. The dual-site welding equipment according to claim 2, characterized in that: The battery cell fixture is provided with a mounting groove, and the mounting frame is provided with a mounting protrusion that matches the mounting groove. The battery cell fixture is installed into the mounting frame along the mounting protrusion.

5. The dual-site welding equipment according to claim 1, characterized in that: It also includes a lifting cylinder, the output end of which is connected to the rotary motor, and the lifting cylinder is used to control the lifting of the rotary motor.

6. The dual-site welding equipment according to claim 1, characterized in that: It also includes a rack for carrying the various components, and the rack is equipped with a cooling fan.

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