Battery cap welding machine

Abstract

A battery cap welding machine comprises a base, and a welding mechanism and a cleaning mechanism are arranged on the base. The cleaning mechanism comprises an ultrasonic unit, a laser generator and a dust collection unit, and the ultrasonic unit, the laser generator and the dust collection unit cooperate to rapidly strip, gasify and remove welding slag; the ultrasonic unit makes contact with the welding position through the solid-state coupling piece and is used for generating high-frequency vibration so that welding slag can be preliminarily loosened and stripped from the welding face. The laser generator is used for focusing residual welding slag parts and instantly gasifying stubborn welding slag by using high energy of laser; and the dust suction unit sucks and cleans the welding slag stripped and gasified by the ultrasonic unit and the laser generator through a plurality of dust suction ports. According to the invention, through the ultrasonic, laser and dust collection units in the cleaning mechanism, the residual stubborn welding slag after the welding of the battery cap is removed in all directions, so that the welding slag cleaning efficiency and quality are greatly improved, the potential problems such as short circuit caused by the residual welding slag are reduced, the product yield is remarkably improved, and the battery production efficiency is improved.

Description

Technical Field

[0001] The present invention mainly relates to the technical field of battery production equipment, in particular to a battery cap welding machine. Background Art

[0002] The battery cap refers to a component used to encapsulate and protect the battery, usually located on the top of the battery; it is usually made of metal material and connected to the battery casing, and plays the role of fixing the internal components of the battery, preventing dust and moisture from entering the battery, and protecting the battery from damage. The cap is fixed to the battery by welding.

[0003] The existing technology discloses an automatic pressure welding device for generating caps of lithium batteries, comprising a fixed seat, the upper end of the fixed seat is connected to a conveying plate through a support rod, the middle part of the upper end of the fixed seat is connected to a welding machine through a mechanical arm, and the welding gun is located in front of the conveying plate, and a plurality of clamping units are evenly rotated and installed above the conveying plate, and a positioning unit is slidably installed at the front and rear ends of the fixed seat, a cap unit is arranged above the positioning unit, and the installation position of the cap unit corresponds to the longitudinal position of the positioning unit, an upper cover unit is installed on the left side of the cap unit, and the upper ends of the cap unit and the upper cover unit are both installed on the free end of the outside; the above mechanism can clamp lithium batteries of different sizes, and align the caps corresponding to the lithium batteries to the lithium batteries, thereby increasing the quality of the lithium batteries after welding is completed, and at the same time, the welding parts are polished to remove the welding slag remaining at the welding parts to prevent the welding slag residue from affecting the quality of the lithium batteries.

[0004] However, the grinding block of the cleaning mechanism in the above technical solution relies on gradual size change to gradually grind the welding slag. For some stubborn welding slag or impurities mixed in the internal pores generated during welding, this grinding method alone may not be able to completely remove them. The residual impurities will still affect the performance of the lithium battery. In addition, the cleaning process is carried out in steps and relies on the push rod to press down one by one. The cleaning efficiency is low, which slows down the production rhythm of the entire lithium battery cap welding. Summary of the invention

[0005] The present invention mainly provides a battery cap welding machine to solve the technical problems raised in the above background technology.

[0006] The technical solution adopted by the present invention to solve the above technical problems is: A battery cap welding machine comprises a base, on which a welding mechanism and a cleaning mechanism are provided; The cleaning mechanism includes an ultrasonic unit, a laser generator and a dust suction unit, which work together to quickly peel off, gasify and remove the welding slag; The ultrasonic unit is in contact with the welding point through a solid coupling sheet, and is used to generate high-frequency vibration to initially loosen and peel off the welding slag from the welding surface; The laser generator is used to focus on the residual welding slag and use the high energy of the laser to instantly gasify the stubborn welding slag; The dust suction unit removes and cleans the welding slag peeled off and gasified by the ultrasonic unit and the laser generator through a plurality of dust suction ports.

[0007] Preferably, the cleaning mechanism is also provided with an intelligent control module and a rotary encoder, the intelligent control module receives data from a capacitive sensor for monitoring welding slag residue and an infrared sensor for sensing the temperature of the welding surface, and the intelligent control module is electrically connected to the ultrasonic unit, laser generator and dust suction unit, and controls the start-up sequence, operating time and parameter adjustment of the ultrasonic unit, laser generator and dust suction unit according to a preset algorithm.

[0008] Preferably, the ultrasonic unit is provided with an ultrasonic transducer, which is connected to a solid coupling plate and can generate high-frequency vibrations in the frequency range of 20kHz-50kHz. Each vibration lasts for 5-10 seconds, and the vibration duration can be dynamically adjusted by the intelligent control module according to the size of the battery cap and the type of welding process.

[0009] Preferably, the laser generator can output a laser beam with a power range of 10-30W, and the scanning time is automatically regulated by the intelligent control module within 5-10 seconds according to the residual amount of welding slag, and the laser generator is provided with a pulse modulation module, which controls the laser energy output by adjusting the pulse frequency.

[0010] Preferably, the dust suction unit comprises a dust suction ring, 6-8 dust suction ports are evenly distributed on the dust suction ring, the dust suction ports are connected to a dust collecting bin via a negative pressure pipe, and a full bin detection sensor is provided in the dust collecting bin.

[0011] Preferably, the cleaning mechanism is provided with an electric lifting rod, the lifting end of the electric lifting rod is connected to a workbench, and the ultrasonic unit, laser generator and dust suction unit are all arranged at the bottom of the workbench.

[0012] Preferably, the welding mechanism comprises an electric telescopic rod, the bottom of which is mounted on the base, and the telescopic end of the electric telescopic rod is connected to a welding table, and a welding head and a rotary encoder are provided at the bottom of the welding table.

[0013] Preferably, the base is provided with a rotating module, and the rotating module includes a rotating motor, the output end of the rotating motor is transmission-connected with a driving gear, the driving gear is meshed with a driven gear for transmission, the driven gear is arranged on a rotating shaft, one end of the rotating shaft is rotationally connected to the base through a bearing seat, and the other end is rotationally connected to a rotating table, 6-10 placement units are arranged on the rotating table, and the placement units are distributed in a ring shape on the rotating table, and in addition, an electronic sensing tag is provided at a position corresponding to each placement unit on the upper surface of the rotating table.

[0014] Preferably, a clamping module is provided in the placement unit, and the clamping module includes a clamping motor, and the output end of the clamping motor is transmission-connected with a driving bevel gear, and the driving bevel gear is meshingly transmission-connected with four circumferentially distributed driven bevel gears, and the driven bevel gears are all connected with a clamping screw, and a clamping block is sleeved on the clamping screw, and a buffer pad is provided on the contact surface between the clamping block and the battery.

[0015] Preferably, a spinning motor is further provided in the placement unit, and an output end of the spinning motor is transmission-connected to a connecting rod, and one end of the connecting rod away from the spinning motor is connected to the bottom of the clamping module.

[0016] Compared with the prior art, the present invention has the following beneficial effects: 1. The present invention uses the ultrasonic, laser and dust suction units in the cleaning mechanism to comprehensively remove the stubborn welding slag remaining after the battery cap welding, which greatly improves the efficiency and quality of welding slag cleaning, reduces potential problems such as short circuit caused by welding slag residue, significantly improves product yield, and improves battery production efficiency.

[0017] 2. The present invention collects sensor data in real time through the intelligent control module with rotary encoder and electronic induction tag, and dynamically adjusts the ultrasonic vibration duration, laser scanning duration and power, vacuum negative pressure and other parameters according to variables such as battery cap size, welding process, residual welding slag, etc., so as to make the cleaning process more in line with actual working conditions, reduce unnecessary energy consumption and extend the service life of the equipment.

[0018] 3. The present invention reduces manual intervention by setting up close cooperation of various modules, from welding, cleaning to material flow, positioning and clamping, thus reducing labor costs and quality risks caused by human operational errors, improving the automation and intelligence level of the production line, and enhancing market competitiveness.

[0019] The present invention will be explained in detail below with reference to the accompanying drawings and specific embodiments. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a schematic diagram of the overall structure of the present invention; Figure 2It is a top view of the overall structure of the present invention; Figure 3 It is a side view of the overall structure of the present invention; Figure 4 It is a cross-sectional view of the rotating module structure of the present invention; Figure 5 It is a side cross-sectional view of the spin motor structure of the present invention; Figure 6 It is a schematic diagram of the cleaning mechanism structure of the present invention; Figure 7 It is a cross-sectional view of the clamping module of the present invention.

[0021] Description of the drawings: 1. Base; 101. Rotary encoder; 102. Electronic induction tag; 2. Welding mechanism; 201. Electric telescopic rod; 202. Welding table; 203. Welding head; 3. Cleaning mechanism; 301. Intelligent control module; 302. Electric lifting rod; 303. Workbench; 4. Ultrasonic unit; 401. Ultrasonic transducer; 402. Solid-state coupling plate; 5. Laser generator; 501. Pulse modulation module; 6. Dust suction unit; 601. Dust suction ring; 602, dust suction port; 603, dust collection bin; 6031, full bin detection sensor; 7, rotation module; 701, rotation motor; 702, driving gear; 703, driven gear; 704, rotating shaft; 705, rotating table; 8, placement unit; 9, clamping module; 901, clamping motor; 902, driving bevel gear; 903, driven bevel gear; 904, clamping screw; 905, clamping block; 906, buffer pad; 10, spinning motor; 1001, connecting rod. DETAILED DESCRIPTION

[0022] To facilitate understanding of the present invention, the present invention will be described more comprehensively below with reference to the relevant drawings. Several embodiments of the present invention are given in the drawings, but the present invention can be implemented in different forms and is not limited to the embodiments described in the text. On the contrary, these embodiments are provided to make the content disclosed in the present invention more thorough and comprehensive. Example

[0023] Please refer to the attached Figure 1 , 2As shown in Figures 3 and 6, a battery cap welding machine comprises a base 1, a welding mechanism 2 and a cleaning mechanism 3 are arranged on the base 1, the cleaning mechanism 3 comprises an ultrasonic unit 4, a laser generator 5 and a dust suction unit 6, the synergistic effect of which enables the welding slag to be quickly peeled off, gasified and removed, the ultrasonic transducer 401 of the ultrasonic unit 4 contacts the welding part through a solid coupling sheet 402, and is used to generate high-frequency vibration to initially loosen and peel off the welding slag from the welding surface, the laser generator 5 is used to focus on the residual welding slag part, and use the high energy of the laser to instantly gasify the stubborn welding slag, and the dust suction unit 6 peels off the ultrasonic unit 4 and the laser generator 5 through a plurality of dust suction ports 602 evenly distributed on a dust suction ring 601 connected to the electric lifting rod 302 The cleaning mechanism 3 is also provided with an intelligent control module 301 and a rotary encoder 101. The intelligent control module 301 receives data from a capacitive sensor for monitoring residual welding slag and an infrared sensor for sensing the temperature of the welding surface. The intelligent control module 301 is electrically connected to an ultrasonic unit 4, a laser generator 5 and a dust suction unit 6. The starting sequence, operating time and parameter adjustment of the ultrasonic unit 4, the laser generator 5 and the dust suction unit 6 are controlled according to a preset algorithm. The cleaning mechanism is provided with an electric lifting rod 302. The lifting end of the electric lifting rod 302 is connected to a workbench 303. The ultrasonic unit 4, the laser generator 5 and the dust suction unit 6 are all arranged at the bottom of the workbench 303.

[0024] It should be noted that after the welding of the battery cap is completed, the cleaning mechanism 3 is entered. First, the workbench 303 is driven by the electric lifting rod 302 to descend to the working position. At this time, the dust suction ring 601 of the dust suction unit 6 is located below the welding position and the dust suction operation is started. Then the ultrasonic transducer 401 of the ultrasonic unit 4 generates 20kHz-50kHz high-frequency vibration and transmits it to the battery cap welding position through the solid coupling plate 402. Each vibration lasts for 5-10 seconds, so that the stubborn welding slag at the welding position is initially loosened and peeled off from the welding surface, which reduces the difficulty of subsequent cleaning. Subsequently, the laser generator 5 outputs a laser beam with a power of 10-30W to scan the welding position. The scanning time depends on According to the residual amount of welding slag, the intelligent control module 301 automatically controls within 5-10 seconds, and with the help of the pulse modulation module 501 to flexibly adjust the pulse frequency, the laser energy is accurately output, and the stubborn welding slag that has not been cleaned up by the ultrasonic unit 4 is instantly vaporized under the high-energy impact. At the same time, the dust suction unit 6 is located below the welding point. Through the 6-8 dust suction ports 602 evenly distributed on the dust suction ring 601, the welding slag shaken off by the ultrasonic unit 4 and vaporized by the laser generator 5 is quickly sucked away and transported to the dust collecting bin 603 along the pipeline. The full bin detection sensor 6031 arranged in the dust collecting bin 603 will issue a prompt when the dust collecting bin 603 is full, so as to clean it in time.

[0025] It should be noted that the ultrasonic transducer 401 has the ability to generate high-frequency vibrations of 20kHz-50kHz. The lower frequency ultrasonic waves have strong penetration and can penetrate deep into the welding area to drive the surrounding welding slag to resonate; the higher frequency focuses on the cleaning of tiny particles and shallow adhesion welding slag. The two complement each other. The duration of each vibration is preset at 5-10 seconds, which can not only ensure sufficient cleaning efficiency, but also avoid potential damage to the battery cap due to excessive vibration; the intelligent control module 301 quickly makes dynamic adjustments to the vibration duration of the ultrasonic transducer 401 based on the pre-implanted algorithm and the real-time collected data, so that the ultrasonic cleaning process is always maintained in the best state.

[0026] It should be noted that the laser generator 5 can output a laser beam with a power in the range of 10-30W. The lower power of 10W is sufficient to gently deal with the situation where there is less welding slag and the adhesion is shallow, and to avoid excessive energy shock causing thermal damage to the fragile welding parts of the battery cap; and when encountering those stubborn welding slag that are firmly adhered and accumulated heavily, the high power output of 30W can release strong energy and instantly disintegrate the welding slag; the intelligent control module 301 flexibly adjusts the scanning time and frequency of the laser generator 5 according to the welding slag residue information fed back by the capacitive sensor, to ensure that the welding slag in every corner can be touched and vaporized by the laser beam.

[0027] It should be noted that when the welding cleaning operation is carried out, the negative pressure value in the negative pressure pipe connected to the suction port 602 is maintained at 60-100Kpa to ensure the suction strength, and the intelligent control module 301 will accurately control the lifting action of the electric lifting rod 302 based on the preset algorithm and the data fed back by various sensors, such as the welding surface height, the estimated distribution of welding slag, etc., to ensure the efficiency and smoothness of the slag removal and dust suction operations in all aspects.

[0028] Please refer to the attached Figure 1 , 2 As shown in Figure 3, the welding mechanism 2 includes an electric telescopic rod 201, the bottom of which is installed on the base 1, and the telescopic end of the electric telescopic rod 201 is connected to a welding table 202, and a welding head 203 is provided at the bottom of the welding table 202. In addition, the welding mechanism 2 is also provided with a control unit 204 and a rotary encoder 101.

[0029] It should be noted that when the battery cap to be welded is located directly below the welding mechanism 2, the rotary encoder 101 detects that it is in the correct position and feeds back a signal to the control system. The control system extends and retracts the electric telescopic rod 201 according to a preset program, so that the welding head 203 on the welding table 202 is located in the correct position of the battery cap to be welded, thereby ensuring the welding effect.

[0030] Please refer to the attached Figure 1 , 2As shown in , 3, 4, and 7, the base 1 is provided with a rotating module 7, and the rotating module 7 includes a rotating motor 701. The output end of the rotating motor 701 is transmission-connected with a driving gear 702, and the driving gear 702 is meshed with a driven gear 703 for transmission. The driven gear 703 is arranged on a rotating shaft 704, and one end of the rotating shaft 704 is rotationally connected to the base 1 through a bearing seat, and the other end is rotationally connected to a rotating table 705. The rotating table 705 is provided with 6-10 placement units 8, and the placement units 8 are distributed in a ring shape on the rotating table 705. In addition, an electronic sensing tag 102 is provided on the upper surface of the rotating table 705 at a position corresponding to each placement unit 8. A clamping module 9 is provided in the placement unit 8, and the clamping module 9 includes a clamping motor 901. The output end of the clamping motor 901 is transmission-connected with an active bevel gear 902. The active bevel gear 902 is meshed with four driven bevel gears 903 distributed in a circle. The driven bevel gears 903 are all connected with a clamping screw 904. A clamping block 905 is sleeved on the clamping screw 904. A buffer pad 906 is provided on the contact surface between the clamping block 905 and the battery. A spinning motor 10 is also provided in the placement unit 8. The output end of the spinning motor 10 is transmission-connected with a connecting rod 1001. The end of the connecting rod 1001 away from the spinning motor 10 is connected to the bottom of the clamping module 9.

[0031] It should be noted that the rotating motor 701 serves as the power source of the rotating module 7. After starting, its output end drives the driving gear 702 to rotate, and the driving gear 702 is meshed and connected with the driven gear 703, thereby driving the driven gear 703 to rotate, thereby driving the rotating shaft 704 to rotate, and one end of the rotating shaft 704 is installed on the base 1 through a bearing seat, and the other end is connected to the rotating table 705, so that the rotating table 705 can rotate steadily and smoothly; an electronic sensing tag 102 is embedded in the corresponding position of each placement unit 8 distributed in a circle on the rotating table 705, which cooperates with the rotary encoder 101 arranged on the welding mechanism 2 and the cleaning mechanism 3 to accurately locate the position of each placement unit 8 so that it can trigger the corresponding process.

[0032] It should be noted that the clamping module 9 utilizes the clamping motor 901, the active bevel gear 902, the driven bevel gear 903 and the clamping screw 904 to synchronously clamp the battery from four directions, which can adapt to batteries of different specifications and firmly fix their position to prevent displacement deviation in processes such as welding and cleaning where external forces are applied, thereby ensuring operation accuracy; the buffer pad 906 on the clamping block 905 stabilizes the battery while avoiding scratches, dents and other damages to the battery casing caused by rigid contact, thereby reducing the defective rate in the production process.

[0033] It should be noted that when welding and cleaning are performed, the spin motor 10 is started, and its output end drives the clamping module 9 to rotate through the connecting rod 1001, allowing the battery to rotate stably and smoothly, ensuring that all parts can be treated evenly, optimizing the welding effect and cleaning integrity.

[0034] The specific operation process of the present invention is as follows: The battery to be welded is placed in the corresponding placement unit 8 on the rotating table 705, and the clamping motor 901 is started. The power is transmitted to the four clamping screws 904 through the meshing of the active bevel gear 902 and the driven bevel gear 903, driving the clamping block 905 to move along the screw toward the battery until the buffer pad 906 fits tightly with the battery to fix the battery; Then, the rotating motor 701 is started, and the driving gear 702 also rotates accordingly, and the driving gear 702 meshes with the driven gear 703 to rotate, thereby driving the rotating shaft 704 to rotate, and then driving the rotating table 705 to rotate, so that the placement unit 8 on the rotating table 705 starts to move; When the battery to be welded in the placement unit 8 moves to the welding mechanism 2, the rotary encoder 101 provided in the welding mechanism 2 detects the electronic induction tag 102, and quickly transmits the position and angle data to the control system. The control system immediately instructs the electric lifting rod 302 to fine-tune the height of the welding table 202 and adjust the parameters of the welding head 203 to weld the lithium battery according to the preset program. At the same time, the spin motor 10 is started, so that the battery to be welded in the placement unit 8 starts to spin. After welding is completed, the placement unit 8 continues to move. When it moves to the cleaning mechanism 3, the rotary encoder 101 provided on the cleaning mechanism 3 detects the electronic sensing tag 102 and quickly sends a signal to the intelligent control module 301. The intelligent control module 301 regulates the cleaning mechanism 3 according to the data of the capacitive sensor and the infrared sensor. First, the electric lifting rod 302 lowers the dust suction unit 6 to below the battery welding position and starts the dust suction port 602. Then, the ultrasonic unit 4 is controlled to move the solid coupling plate 402 of the ultrasonic transducer 401 close to the welding position, and the welding slag at the welding position is peeled off so that it is sucked into the dust collecting bin 603 by the dust suction unit 6. Then, the ultrasonic unit 4 is reset, and the laser generator 5 scans the rotating battery welding position so that the stubborn residual welding slag is gasified and sucked into the dust collecting bin 603 by the dust suction port 602. After the cleaning is completed, the dust suction unit 6 is reset, and the placement unit 8 continues to move until it reaches the unloading position, and the clamping module 9 releases the battery, so that the battery is unloaded.

[0035] The above is an exemplary description of the present invention in combination with the accompanying drawings. It is obvious that the specific implementation of the present invention is not limited to the above-mentioned method. As long as such non-substantial improvements are made by adopting the method concept and technical solution of the present invention, or the concept and technical solution of the present invention are directly applied to other occasions without improvement, they are all within the protection scope of the present invention.

Claims

1. A battery cap welding machine, comprising a base (1), characterized in that: The base (1) is provided with a welding mechanism (2) and a cleaning mechanism (3); The cleaning mechanism (3) comprises an ultrasonic unit (4), a laser generator (5) and a dust suction unit (6), which work together to quickly peel off, gasify and remove the welding slag; The ultrasonic unit (4) is in contact with the welding point through a solid coupling sheet (402) and is used to generate high-frequency vibration to initially loosen and peel off the welding slag from the welding surface; The laser generator (5) is used to focus on the residual welding slag and utilize the high energy of the laser to instantly gasify the stubborn welding slag; The dust suction unit (6) removes and cleans the weld slag peeled off and gasified by the ultrasonic unit (4) and the laser generator (5) through a plurality of dust suction ports (602).

2. A battery cap welding machine according to claim 1, characterized in that: The cleaning mechanism (3) is further provided with an intelligent control module (301) and a rotary encoder (101); the intelligent control module (301) receives data from a capacitive sensor for monitoring welding slag residue and an infrared sensor for sensing the temperature of the welding surface; and the intelligent control module (301) is electrically connected to the ultrasonic unit (4), the laser generator (5) and the dust suction unit (6); and controls the start-up sequence, operating time and parameter adjustment of the ultrasonic unit (4), the laser generator (5) and the dust suction unit (6) according to a preset algorithm.

3. A battery cap welding machine according to claim 2, characterized in that: The ultrasonic unit (4) is provided with an ultrasonic transducer (401), the ultrasonic transducer (401) being connected to a solid coupling plate (402), and the ultrasonic transducer (401) being capable of generating high-frequency vibrations in the frequency range of 20 kHz to 50 kHz, with each vibration lasting for 5 to 10 seconds, and the vibration duration can be dynamically adjusted by the intelligent control module (301) according to the size of the battery cap and the type of welding process.

4. A battery cap welding machine according to claim 2, characterized in that: The laser generator (5) can output a laser beam with a power range of 10-30 W. The scanning time is automatically controlled by the intelligent control module (301) within 5-10 seconds according to the amount of residual welding slag. The laser generator (5) is provided with a pulse modulation module (501). The pulse modulation module (501) controls the laser energy output by adjusting the pulse frequency.

5. A battery cap welding machine according to claim 2, characterized in that: The dust suction unit (6) comprises a dust suction ring (601), 6 to 8 dust suction ports (602) are evenly distributed on the dust suction ring (601), the dust suction ports (602) are connected to a dust collecting bin (603) via a negative pressure pipe, and a full bin detection sensor (6031) is provided in the dust collecting bin (603).

6. A battery cap welding machine according to claim 1, characterized in that: The cleaning mechanism (3) is provided with an electric lifting rod (302), the lifting end of the electric lifting rod (302) is connected to a workbench (303), and the ultrasonic unit (4), the laser generator (5) and the dust suction unit (6) are all arranged at the bottom of the workbench (303).

7. A battery cap welding machine according to claim 1, characterized in that: The welding mechanism (2) comprises an electric telescopic rod (201), the bottom of the electric telescopic rod (201) being mounted on the base (1), and the telescopic end of the electric telescopic rod (201) being connected to a welding table (202), the bottom of the welding table (202) being provided with a welding head (203) and a rotary encoder (101).

8. A battery cap welding machine according to claim 1, characterized in that: The base (1) is provided with a rotating module (7), the rotating module (7) comprising a rotating motor (701), the output end of the rotating motor (701) being transmission-connected with a driving gear (702), the driving gear (702) being meshed with a driven gear (703) for transmission, the driven gear (703) being arranged on a rotating shaft (704), one end of the rotating shaft (704) being rotationally connected to the base (1) via a bearing seat, and the other end of the rotating shaft (704) being rotationally connected to a rotating platform (705), the rotating platform (705) being provided with 6 to 10 placement units (8), the placement units (8) being distributed in a ring shape on the rotating platform (705), and in addition, an electronic sensing tag (102) is arranged on the upper surface of the rotating platform (705) at a position corresponding to each placement unit (8).

9. A battery cap welding machine according to claim 8, characterized in that: The placement unit (8) is provided with a clamping module (9), the clamping module (9) comprising a clamping motor (901), the output end of the clamping motor (901) being transmission-connected to a driving bevel gear (902), the driving bevel gear (902) being meshingly transmission-connected to four circumferentially distributed driven bevel gears (903), the driven bevel gears (903) being connected to a clamping screw rod (904), a clamping block (905) being sleeved on the clamping screw rod (904), and a buffer pad (906) being provided on a contact surface between the clamping block (905) and the battery.

10. A battery cap welding machine according to claim 9, characterized in that: A spinning motor (10) is also provided in the placement unit (8), and the output end of the spinning motor (10) is transmission-connected to a connecting rod (1001), and one end of the connecting rod (1001) away from the spinning motor (10) is connected to the bottom of the clamping module (9).

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