Spot welding device for BMS protection plate

Abstract

The utility model relates to the technical field of spot welding devices, and discloses a spot welding device for a BMS (battery management system) protection plate, which comprises a box body, a placing plate and a numerical control frame are respectively and fixedly mounted on the inner wall of the box body, a motor is fixedly mounted on the outer wall of the box body, and a double-end screw rod is fixedly mounted on an output shaft of the motor. A moving block is slidably connected to the inner wall of the box body, and an air cylinder is fixedly assembled at the bottom of the numerical control frame. By starting a motor, the motor drives a double-end lead screw to rotate, so that the double-end lead screw drives two extension blocks and moving blocks to move towards the middle through threaded connection with the extension blocks at the two ends, positioning wheels outside the two moving blocks are attached to the outer wall of a protection plate, and then two rotating plates are pushed by the protection plate; and two rotating columns rotate, then positioning wheels on the outer walls of two moving blocks position and fix the four corners of the protection plate, friction force generated when the protection plate is clamped is reduced through the positioning wheels, and then edge abrasion of the BMS protection plate is reduced.

Description

Technical Field

[0001] This utility model relates to the field of spot welding device technology, specifically a spot welding device for BMS protection board. Background Technology

[0002] The BMS protection board is a key component in the battery management system, mainly used to protect the battery pack, extend battery life, and ensure the safe and reliable operation of the battery.

[0003] Existing spot welding equipment for BMS protection boards mostly uses clamps to fix the protection board during use, which may cause wear on the edges of the protection board, resulting in edge damage. In addition, the method of fixing the welding head is complicated, and the welding head needs to be replaced and disassembled for maintenance frequently, resulting in excessive disassembly time. Utility Model Content

[0004] To address the shortcomings of existing technologies, this utility model provides a spot welding device for BMS protection boards, which has the advantages of reduced edge friction during positioning and easy replacement of welding heads, thus solving the problems mentioned in the background art.

[0005] This utility model provides the following technical solution: a spot welding device for a BMS protection board, comprising a housing, a placement plate and a CNC frame fixedly installed on the inner wall of the housing, a motor fixedly installed on the outer wall of the housing, a double-ended lead screw fixedly installed on the output shaft of the motor, a moving block slidably connected to the inner wall of the housing, a cylinder fixedly mounted on the bottom of the CNC frame, a spot welding device fixedly installed on the telescopic end of the cylinder, a rotating column rotatably connected to the inner wall of the moving block, a rotating plate fixedly installed on the bottom of the rotating column, a positioning wheel rotatably connected to the bottom of the rotating plate, a torsion spring provided on the inner wall of the moving block, an extension block fixedly installed on the bottom of the moving block, an installation block fixedly installed on the bottom of the spot welding device, a spot welding head provided on the bottom of the installation block, a gear rotatably connected to the inner wall of the installation block, a rack slidably connected to the inner wall of the installation block, a pressure plate fixedly installed on the outer wall of the rack, a spring provided on the inner wall of the installation block, a locking block fixedly installed on the outer wall of the pressure plate, and a limit block fixedly installed on the outer wall of the spot welding head.

[0006] As a preferred technical solution of this utility model: the shape of the locking block is adapted to the inner wall shape of the limiting block, and the locking block is located on the inner wall of the limiting block.

[0007] As a preferred technical solution of this utility model: the number of racks, pressure plates and springs is two, and the two pressure plates and springs are symmetrically arranged. The two racks are located on the upper and lower sides of the gear, and the gear meshes with the two racks.

[0008] As a preferred technical solution of this utility model: the torsion spring is located between the inner wall of the rotating column and the moving block, and the two ends of the torsion spring are respectively connected to the outer wall of the rotating column and the inner wall of the moving block.

[0009] As a preferred technical solution of this utility model: the number of the moving block, rotating column, rotating plate, torsion spring, positioning wheel and extension block is two, and the two moving blocks, rotating column, rotating plate, torsion spring, positioning wheel and extension block are symmetrically arranged on both sides of the inner wall of the box.

[0010] As a preferred technical solution of this utility model: the double-ended lead screw passes through the extension block, and the double-ended lead screw and the extension block are threadedly connected, and the extension block is in contact with the inner wall of the box.

[0011] Compared with the prior art, the present invention has the following beneficial effects:

[0012] 1. The BMS protection board uses a spot welding device. By starting the motor, the motor drives the double-ended lead screw to rotate. The double-ended lead screw, through the threaded connection with the two end extension blocks, drives the two extension blocks and the moving blocks to move towards the center. This causes the positioning wheels on the outside of the two moving blocks to come into contact with the outer wall of the protection board. Consequently, the two rotating plates are pushed by the protection board, causing the two rotating columns to rotate. This, in turn, causes the positioning wheels on the outer wall of the two moving blocks to position and fix the four corners of the protection board. The positioning wheels reduce the friction when clamping the protection board, thereby reducing the edge wear of the BMS protection board.

[0013] 2. The BMS protection board uses a spot welding device. By rotating the gear, the gear meshes with the rack, causing the rack to move. This causes the rack to move the pressure plate and the locking block, resulting in the spring contracting. At this point, the locking block separates from the inner wall of the limiting block, thus eliminating the fixing relationship of the limiting block. The spot welding head and the limiting block can then be removed from the inner wall of the mounting block for replacement and maintenance. Attached Figure Description

[0014] Figure 1 This is a three-dimensional structural diagram of the present invention;

[0015] Figure 2 This is a schematic cross-sectional view of the present invention.

[0016] Figure 3 This is a schematic diagram of the movable block structure of this utility model;

[0017] Figure 4 This is a schematic diagram of the mounting block structure of this utility model;

[0018] Figure 5 This is a schematic diagram of the cross-sectional structure of the mounting block of this utility model;

[0019] Figure 6 This is a schematic diagram of the locking block structure of this utility model.

[0020] In the diagram: 1. Box body; 2. Placement plate; 3. CNC frame; 4. Motor; 5. Double-ended lead screw; 6. Moving block; 7. Rotating column; 8. Rotating plate; 9. Torsion spring; 10. Positioning wheel; 11. Extension block; 12. Cylinder; 13. Spot welding equipment; 14. Mounting block; 15. Spot welding head; 16. Gear; 17. Rack; 18. Pressure plate; 19. Spring; 20. Locking block; 21. Limiting block. Detailed Implementation

[0021] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0022] Please see Figure 1 - Figure 6 A spot welding device for a BMS protection board includes a housing 1. A placement plate 2 and a CNC frame 3 are fixedly installed on the inner wall of the housing 1. A motor 4 is fixedly installed on the outer wall of the housing 1. A double-ended lead screw 5 is fixedly installed on the output shaft of the motor 4. A moving block 6 is slidably connected to the inner wall of the housing 1. A cylinder 12 is fixedly mounted on the bottom of the CNC frame 3. A spot welding device 13 is fixedly installed on the telescopic end of the cylinder 12. A rotating column 7 is rotatably connected to the inner wall of the moving block 6. A rotating plate 8 is fixedly installed on the bottom of the rotating column 7. A [missing information - likely a component or device] is rotatably connected to the bottom of the rotating plate 8. The positioning wheel 10 and the inner wall of the moving block 6 are provided with torsion springs 9. An extension block 11 is fixedly installed at the bottom of the moving block 6. An installation block 14 is fixedly installed at the bottom of the spot welding equipment 13. A spot welding head 15 is provided at the bottom of the installation block 14. A gear 16 is rotatably connected to the inner wall of the installation block 14. A rack 17 is slidably connected to the inner wall of the installation block 14. A pressure plate 18 is fixedly installed on the outer wall of the rack 17. A spring 19 is provided on the inner wall of the installation block 14. A locking block 20 is fixedly installed on the outer wall of the pressure plate 18. A limit block 21 is fixedly installed on the outer wall of the spot welding head 15.

[0023] In the above structure, the shapes of the spot welding head 15 and the limiting block 21 are the same as the inner wall shape of the mounting block 14, so that the spot welding head 15 and the limiting block 21 can be inserted into the interior of the mounting block 14 from the bottom, thereby making the mounting block 14 and the spot welding head 15 connected.

[0024] In a preferred embodiment, the shape of the locking block 20 is adapted to the inner wall shape of the limiting block 21, and the locking block 20 is located on the inner wall of the limiting block 21.

[0025] In the above structure, the spring 19 pushes the pressure plate 18, which in turn causes the spring 19 to move the locking block 20 into the interior of the limiting block 21, so that the locking block 20 enters the inner wall of the limiting block 21, thereby fixing the position of the limiting block 21.

[0026] In a preferred embodiment, there are two racks 17, pressure plates 18 and springs 19, and the two pressure plates 18 and springs 19 are arranged symmetrically. The two racks 17 are located on the upper and lower sides of the gear 16, and the gear 16 meshes with the two racks 17.

[0027] In the above structure, by rotating the gear 16, the gear 16 meshes with the two racks 17, causing the two racks 17 to move, which in turn causes the two pressure plates 18 and the locking block 20 to move, thereby compressing the two springs 19.

[0028] In a preferred embodiment, the torsion spring 9 is located between the inner walls of the rotating column 7 and the moving block 6, and the two ends of the torsion spring 9 overlap with the outer wall of the rotating column 7 and the inner wall of the moving block 6, respectively.

[0029] In the above structure, when the rotating plate 8 rotates, it drives the rotating column 7 to rotate, which in turn drives one end of the torsion spring 9 to move, causing the torsion spring 9 to deform. When the rotational force of the rotating plate 8 disappears, the elasticity of the torsion spring 9 restores the structure to its original state.

[0030] In a preferred embodiment, there are two moving blocks 6, rotating columns 7, rotating plates 8, torsion springs 9, positioning wheels 10 and extension blocks 11, and the two moving blocks 6, rotating columns 7, rotating plates 8, torsion springs 9, positioning wheels 10 and extension blocks 11 are symmetrically arranged on both sides of the inner wall of the housing 1.

[0031] In the above structure, by moving two movable blocks 6, rotating columns 7, rotating plates 8, torsion springs 9, positioning wheels 10 and extension blocks 11 towards the center, the positioning wheels 10 on the outside of the two movable blocks 6 come into contact with the outer wall of the protective plate, thereby causing the two rotating plates 8 to be pushed by the protective plate, causing the two rotating columns 7 to rotate, and thus causing the positioning wheels 10 on the outer wall of the two movable blocks 6 to fix the four corners of the protective plate.

[0032] In a preferred embodiment: the double-ended lead screw 5 passes through the extension block 11, and the double-ended lead screw 5 and the extension block 11 are threadedly connected, and the extension block 11 is in contact with the inner wall of the housing 1.

[0033] In the above structure, by starting the motor 4, the motor 4 drives the double-ended lead screw 5 to rotate, which in turn causes the double-ended lead screw 5 to move through the threaded connection with the extension block 11, which in turn causes the extension block 11 to move the moving block 6.

[0034] Working Principle: When using this equipment, the BMS protection board is placed above the placement plate 2. The motor 4 is then started, causing it to drive the double-ended lead screw 5 to rotate. The lead screw 5, through its threaded connection with the two end extension blocks 11, moves the two extension blocks 11 and the moving block 6 towards the center. This causes the positioning wheels 10 on the outer walls of the two moving blocks 6 to engage with the outer wall of the protection board, pushing the two rotating plates 8 and causing the two rotating columns 7 to rotate. The positioning wheels 10 on the outer walls of the two moving blocks 6 then fix the four corners of the protection board in place. At this point, the circuit is completed. The control frame 3, cylinder 12, spot welding equipment 13, and spot welding head 15 weld the BMS protection board. When the spot welding head 15 needs to be replaced, the gear 16 is rotated, which in turn causes the gear 16 to mesh with the two racks 17, thereby moving the two racks 17. This causes the two racks 17 to move the two pressure plates 18 and the locking block 20, thereby compressing the two springs 19. At this time, the locking block 20 separates from the inner wall of the limiting block 21, thereby eliminating the fixing relationship of the limiting block 21. The spot welding head 15 and the limiting block 21 can then be removed for replacement or maintenance.

[0035] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A spot welding device for BMS protection panels, comprising a box (1), characterized in that: The inner wall of the box (1) is respectively fixedly installed with a placing plate (2) and a numerical control frame (3), the outer wall of the box (1) is fixedly installed with a motor (4), the output shaft of the motor (4) is fixedly installed with a double-head screw rod (5), the inner wall of the box (1) is slidably connected with a moving block (6), the bottom of the numerical control frame (3) is fixedly assembled with an air cylinder (12), the telescopic end of the air cylinder (12) is fixedly installed with a spot welding device (13), the inner wall of the moving block (6) is rotatably connected with a rotating column (7), the bottom of the rotating column (7) is fixedly installed with a rotating plate (8), the bottom of the rotating plate (8) is rotatably connected with a positioning wheel (10), the inner wall of the moving block (6) is provided with a torsion spring (9), the bottom of the moving block (6) is fixedly installed with an extension block (11), the bottom of the spot welding device (13) is fixedly installed with a mounting block (14), the bottom of the mounting block (14) is provided with a spot welding head (15), the inner wall of the mounting block (14) is rotatably connected with a gear (16), the inner wall of the mounting block (14) is slidably connected with a rack (17), the outer wall of the rack (17) is fixedly installed with a pressing plate (18), the inner wall of the mounting block (14) is provided with a spring (19), the outer wall of the pressing plate (18) is fixedly installed with a locking block (20), and the outer wall of the spot welding head (15) is fixedly installed with a limiting block (21).

2. The spot welding device for BMS protection board according to claim 1, characterized in that: The shape of the locking block (20) is matched with the inner wall shape of the limiting block (21), and the locking block (20) is located in the inner wall of the limiting block (21).

3. The spot welding device for BMS protection board according to claim 1, characterized in that: The number of the rack (17), the pressing plate (18) and the spring (19) is two, and the two pressing plates (18) and springs (19) are symmetrically arranged, and the two racks (17) are respectively located on the upper and lower sides of the gear (16), and the gear (16) is engaged with the two racks (17).

4. The spot welding device for a BMS protection board according to claim 1, characterized in that: The torsion spring (9) is located between the rotating column (7) and the inner wall of the moving block (6), and the two ends of the torsion spring (9) are respectively connected with the outer wall of the rotating column (7) and the inner wall of the moving block (6).

5. The spot welding device for a BMS protection board according to claim 1, characterized in that: The number of the moving block (6), the rotating column (7), the rotating plate (8), the torsion spring (9), the positioning wheel (10) and the extension block (11) is two, and the two moving blocks (6), rotating columns (7), rotating plates (8), torsion springs (9), positioning wheels (10) and extension blocks (11) are symmetrically arranged on the two sides of the inner wall of the box (1).

6. The spot welding device for a BMS protection board according to claim 1, characterized in that: The double-head screw rod (5) penetrates the extension block (11), and the double-head screw rod (5) and the extension block (11) are in a threaded connection relationship, and the extension block (11) is attached to the inner wall of the box (1).

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