Spot welding device with buffering protection and welding slag removal functions for BMS protection plate

Abstract

The utility model provides a spot welding device with buffering protection and welding slag removal functions for a BMS (battery management system) protection plate, which relates to the technical field of spot welding devices and comprises spot welding equipment. A spot welding table is fixedly installed on one side of the spot welding equipment, clamping mechanisms are arranged on the two sides of the spot welding table and comprise telescopic cylinders, the telescopic cylinders are fixedly installed on the spot welding table, push blocks are slidably connected into the telescopic cylinders, and air inlet channels penetrating through the two ends of the push blocks at the same time are formed in the push blocks. Gas in the telescopic cylinder and the air bag is sprayed out through the spray head, so that welding slag on the BMS protection plate is blown away, and the situation that the electrical performance is reduced in the using process, and potential safety hazards exist is avoided; the air bag has good buffering capacity and can adapt to the shapes and the sizes of different workpieces, the supporting plate cannot be excessively attached to and tightly press the BMS protection plate, and the BMS protection plate is prevented from being damaged.

Description

Technical Field

[0001] The utility model relates to the technical field of spot welding devices, in particular to a spot welding device for a BMS protection plate with both buffer protection and welding slag removal. Background Art

[0002] Spot welding equipment is used when processing the BMS protection plate. Spot welding refers to a welding method that uses a columnar electrode to form a weld between the contact surfaces of two overlapping workpieces. During spot welding, pressure is first applied to make the workpieces in close contact, and then the current is turned on. The contact between the workpieces melts under the action of resistance heat, and a weld is formed after cooling.

[0003] For example, the patent entitled: A spot welding device for a BMS protection plate with both buffer protection and welding slag removal (patent publication number: CN216758486U) discloses a spot welding device for a BMS protection plate with both buffer protection and welding slag removal, including a spot welding device, a support table and a receiving block. The utility model, by setting a clamping plate, two connecting rods, a receiving block, a limit mechanism and a transmission mechanism, fixes the BMS protection plate with the clamping plate, solves the problem that the BMS protection plate is prone to shaking during the operation, and the shaking will affect the welding structure, thus causing it to be scrapped, inconvenient for users to use, and there is no clamping and fixing device.

[0004] However, the above patent does not take into account that the BMS protection board will generate electric sparks during the spot welding process. After cooling, the electric sparks will turn into welding slag and fall on the BMS protection board, affecting its electrical performance and posing a safety hazard. In addition, the BMS protection board is relatively fragile, and the force during clamping should not be too large. Excessive clamping force may cause unnecessary damage to it and affect its normal operation.

[0005] Therefore, it is necessary to propose a spot welding device for a BMS protection plate that has both buffer protection and welding slag removal to solve the above problems. Utility Model Content

[0006] In order to solve the above technical problems, the utility model provides a spot welding device for a BMS protection plate which has both buffer protection and welding slag removal.

[0007] The utility model provides a spot welding device for a BMS protection plate with both buffer protection and welding slag removal, comprising a spot welding device, wherein a spot welding table is fixedly installed on one side of the spot welding device: clamping mechanisms are arranged on both sides of the spot welding table, the clamping mechanisms comprise a telescopic cylinder, the telescopic cylinder is fixedly installed on the spot welding table, a push block is slidably connected in the telescopic cylinder, an air intake channel which simultaneously passes through both ends of the push block is opened inside the push block, one end of the push block away from the telescopic cylinder movably passes through the telescopic cylinder and is fixedly installed with a support plate, an air bag is fixedly installed on the support plate, and the air intake channel is communicated with the air bag.

[0008] Preferably, a through hole is opened at the top of the air inlet channel, a gas diverter is fixedly installed on the top of the push block, the gas diverter is connected to the through hole, a nozzle is fixedly connected to one side of the gas diverter, and a first solenoid valve is arranged in the through hole.

[0009] Preferably, a plurality of air inlet channels are provided, and the plurality of air inlet channels are distributed at equal distances along the push block.

[0010] Preferably, a spring is provided inside the telescopic cylinder, one end of the spring is fixedly connected to the push block, and the other end of the spring is fixedly connected to the inner wall of the telescopic cylinder.

[0011] Preferably, a second solenoid valve is provided at one end of the air inlet passage close to the telescopic cylinder.

[0012] Preferably, an electric air pump is fixedly installed at the bottom of the spot welding table, a three-way pipe is fixedly installed on the air outlet end of the electric air pump, and both ends of the three-way pipe are fixedly connected with hoses, and the end of the hose away from the electric air pump is connected to the corresponding telescopic cylinder.

[0013] Compared with the related art, the spot welding device for BMS protection plate provided by the utility model has the following beneficial effects:

[0014] 1. The utility model sprays out the gas in the telescopic tube and the airbag through the nozzle, thereby blowing off the welding slag on the BMS protection plate, avoiding the degradation of electrical performance during use and the potential safety hazards;

[0015] 1. The utility model has good buffering ability through the airbag, can adapt to the shapes and sizes of different workpieces, will not make the support plate excessively fit and press the BMS protection plate, and avoid damage to the BMS protection plate. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 A schematic structural diagram of a preferred embodiment of a spot welding device for a BMS protection plate having both buffer protection and welding slag removal provided by the utility model;

[0017] Figure 2 It is a structural cross-sectional view of the clamping mechanism of the utility model;

[0018] Figure 3 For the utility model Figure 2 An enlarged view of the structure at A shown;

[0019] Figure 4 It is a structural cross-sectional view of the push block and the gas diverter of the utility model.

[0020] Numbers in the figure: 1. spot welding equipment; 2. spot welding table; 3. electric air pump; 4. telescopic cylinder; 5. gas diverter; 6. air bag; 7. nozzle; 8. push block; 9. support plate; 10. spring; 11. hose; 12. first solenoid valve; 13. air intake channel; 14. through hole; 15. second solenoid valve. DETAILED DESCRIPTION

[0021] The utility model is further described below in conjunction with the accompanying drawings and implementation modes.

[0022] Please refer to Figure 1 , Figure 2 , Figure 3 and Figure 4 ,in, Figure 1 A schematic structural diagram of a preferred embodiment of a spot welding device for a BMS protection plate having both buffer protection and welding slag removal provided by the utility model; Figure 2 for Figure 1 A structural cross-sectional view of the clamping mechanism shown; Figure 3 for Figure 2 An enlarged view of the structure at A shown; Figure 4 for Figure 1 A structural cross-sectional view of the push block and gas diverter is shown.

[0023] refer to Figure 1 As shown, the spot welding device 1 includes a spot welding device 1, which is a common welding device in the prior art and is usually composed of components such as a pressurizing mechanism, an electrode and a frame, which will not be described in detail here. A spot welding table 2 is fixedly installed on one side of the spot welding device 1, and the spot welding table 2 is used to place the BMS protection plate.

[0024] refer to Figure 1 and Figure 2 As shown, a clamping mechanism is provided on both sides of the spot welding table 2, and the clamping mechanism includes a telescopic cylinder 4, which is fixedly installed on the spot welding table 2, and a push block 8 is slidably connected in the telescopic cylinder 4. An air intake channel 13 that runs through both ends of the push block 8 is opened inside the push block 8, and the air intake channel 13 is used to transmit the gas in the telescopic cylinder 4. One end of the push block 8 away from the telescopic cylinder 4 moves through the telescopic cylinder 4 and is fixedly installed with a support plate 9, on which an air bag 6 is fixedly installed, and the air intake channel 13 is communicated with the air bag 6, and a spring 10 is provided inside the telescopic cylinder 4, and the spring 10 is used to reset the push block 8, one end of the spring 10 is fixedly connected to the push block 8, and the other end of the spring 10 is fixedly connected to the inner wall of the telescopic cylinder 4.

[0025] The airbag 6 has good buffering ability and can adapt to the shapes and sizes of different workpieces. It will not make the support plate 9 excessively fit and press the BMS protection plate, thereby avoiding damage to the BMS protection plate.

[0026] refer to Figure 4As shown, specifically, a plurality of air inlet channels 13 are provided, and the plurality of air inlet channels 13 are distributed at equal distances along the push block 8. The plurality of air inlet channels 13 are provided to inflate the airbag 6 from multiple points, which can improve the stability and uniformity of clamping.

[0027] Taking into account that the BMS protection plate is relatively fragile, the clamping force should not be too large. Therefore, an electric air pump 3 is fixedly installed at the bottom of the spot welding table 2. The electric air pump 3 is used to control the clamping mechanism to clamp the BMS protection plate for fixing. A three-way pipe is fixedly installed on the air outlet end of the electric air pump 3, and both ends of the three-way pipe are fixedly connected with a hose 11. The end of the hose 11 away from the electric air pump 3 is connected to the corresponding telescopic cylinder 4. The clamping force is controlled by adjusting the air pressure generated by the electric air pump 3 inputting gas into the telescopic cylinder 4, so that accurate and stable clamping can be achieved to avoid excessive clamping force.

[0028] It should be noted that in order to prevent the airbag 6 from bursting due to over-inflation, a pressure sensor (not shown in the figure) can be installed on the inner wall of the air inlet channel 13 close to one end of the airbag 6. The pressure sensor is used to detect the air pressure in the airbag 6 to prevent the airbag 6 from bursting due to excessive pressure.

[0029] During operation, a controller may be provided to connect between the electric air pump 3 and a pressure sensor, and the pressure sensor detects the air pressure in the airbag 6. When the pressure sensor detects that the air pressure is too high, the controller controls the electric air pump 3 to stop inflating by transmitting information to the controller.

[0030] refer to Figure 2 and Figure 3 As shown, considering that the BMS protection plate will generate electric sparks during the spot welding process, the electric sparks will become welding slag after cooling and fall on the BMS protection plate, affecting its electrical performance and posing a safety hazard. Therefore, a through hole 14 is opened at the top of the air inlet channel 13, and a gas diverter 5 is fixedly installed on the top of the push block 8. The gas diverter 5 is connected to the through hole 14. The side of the gas diverter 5 close to the air bag 6 is fixedly connected to a nozzle 7, which is used for spraying dispersed gas so that the gas can blow off the welding slag on the BMS protection plate; a second solenoid valve 15 is provided at one end of the air inlet channel 13 close to the telescopic cylinder 4; a first solenoid valve 12 is provided in the through hole 14; the gas diverter 5 is used to discharge the remaining gas in the air bag 6 or the telescopic cylinder 4. When the clamping work is completed, the corresponding first solenoid valve 12 or the second solenoid valve 15 is opened, so that the high-pressure gas in the air bag 6 or the high-pressure gas in the telescopic cylinder 4 can be sprayed from the nozzle 7 due to the pressure flow, thereby blowing off the welding slag of the BMS protection plate.

[0031] During specific operation, when the BMS protection plate needs to be clamped and fixed, the electric air pump 3 is started, the first solenoid valve 12 and the second solenoid valve 15 are closed, and the electric air pump 3 inflates the telescopic cylinder 4 so that the push block 8 stretches the spring 10. When the push block 8 moves, the BMS protection plate is clamped by the support plate 9. At this time, there is no gas in the airbag 6 and it will be squeezed between the BMS protection plate and the support plate 9.

[0032] If the BMS protection plate is easily damaged by clamping during actual processing, the second solenoid valve 15 is opened to allow the gas to be evenly distributed into the airbag 6, causing the airbag 6 to expand and clamp the BMS protection plate. This has a better cushioning effect and maintains basic clamping stability, which can provide spot welding processing and avoid damage to the BMS protection plate.

[0033] During specific use, the pressure in the airbag 6 can also be monitored by a pressure sensor. When the pressure value in the airbag 6 reaches a suitable level, the second solenoid valve 15 can be closed, thereby adjusting the pressure in the telescopic cylinder 4 to change the degree of compression.

[0034] After the spot welding is completed, when the first solenoid valve 12 is opened, the high-pressure gas in the airbag 6 is ejected from the nozzle 7 to blow away the welding slag on the surface of the BMS protection plate, and has a certain cooling effect on the BMS protection plate; when the first solenoid valve 12 and the second solenoid valve 15 are opened at the same time, the high-pressure gas in the telescopic cylinder 4 and the airbag 6 is ejected from the nozzle 7 to blow away the welding slag on the surface of the BMS protection plate.

[0035] This avoids the degradation of electrical performance of the BMS protection board during use, which could pose a safety hazard.

[0036] The above description is only an embodiment of the present invention, and does not limit the patent scope of the present invention. Any equivalent structure or equivalent process transformation made by using the contents of the specification and drawings of the present invention, or directly or indirectly applied in other related technical fields, are also included in the patent protection scope of the present invention.

Claims

1. A spot welding device for a BMS protection plate with both buffer protection and slag removal, comprising a spot welding device (1), a spot welding table (2) fixedly mounted on one side of the spot welding device (1): characterized in that: A clamping mechanism is provided on both sides of the spot welding table (2), and the clamping mechanism comprises a telescopic cylinder (4), the telescopic cylinder (4) is fixedly mounted on the spot welding table (2), a push block (8) is slidably connected in the telescopic cylinder (4), an air intake passage (13) is provided inside the push block (8) and passes through both ends of the push block (8), one end of the push block (8) away from the telescopic cylinder (4) movably passes through the telescopic cylinder (4) and is fixedly mounted with a support plate (9), an air bag (6) is fixedly mounted on the support plate (9), and the air intake passage (13) is connected to the air bag (6).

2. A spot welding device for a BMS protection plate with both buffer protection and slag removal according to claim 1, characterized in that: A through hole (14) is provided at the top of the air inlet passage (13); a gas diverter (5) is fixedly installed at the top of the push block (8); the gas diverter (5) is connected to the through hole (14); a nozzle (7) is fixedly connected to one side of the gas diverter (5); and a first solenoid valve (12) is provided in the through hole (14).

3. A spot welding device for a BMS protection plate with both buffer protection and slag removal according to claim 1, characterized in that: A plurality of air intake channels (13) are provided, and the plurality of air intake channels (13) are distributed at equal distances along the push block (8).

4. A spot welding device for a BMS protection plate with both buffer protection and slag removal according to claim 1, characterized in that: A spring (10) is arranged inside the telescopic cylinder (4), one end of the spring (10) is fixedly connected to the push block (8), and the other end of the spring (10) is fixedly connected to the inner wall of the telescopic cylinder (4).

5. A spot welding device for a BMS protection plate with both buffer protection and slag removal according to claim 1, characterized in that: A second solenoid valve (15) is provided at one end of the air inlet passage (13) close to the telescopic cylinder (4).

6. A spot welding device for a BMS protection plate with both buffer protection and slag removal according to claim 1, characterized in that: An electric air pump (3) is fixedly installed at the bottom of the spot welding table (2), a three-way pipe is fixedly installed on the air outlet end of the electric air pump (3), and both ends of the three-way pipe are fixedly connected to a hose (11), and the end of the hose (11) away from the electric air pump (3) is connected to the corresponding telescopic cylinder (4).

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