A positive and negative electrode current collector disc encapsulation welding all-in-one machine

Abstract

The application relates to a battery cell positive and negative electrode current collector disc rubber coating and welding integrated machine, which is characterized by comprising a battery cell feeding device, a negative electrode current collector disc welding device and a positive electrode current collector disc welding device. The battery cell feeding device feeds the battery cell to the negative electrode current collector disc welding device, the negative electrode current collector disc welding device welds the negative electrode current collector disc to the negative electrode of the battery cell, and then the battery cell is conveyed to the positive electrode current collector disc welding device to weld the positive electrode current collector disc to the positive electrode of the battery cell. The battery cell positive and negative electrode current collector disc rubber coating and welding integrated machine can realize automatic welding of the positive and negative electrodes of the battery cell to the current collector disc, so as to improve the production efficiency.

Description

Technical Field

[0001] This invention relates to the field of lithium battery production technology, and in particular to an integrated machine for coating and welding the positive and negative current collectors of a battery cell. Background Technology

[0002] The battery cell is the most important component of a battery. It undergoes a series of processes, including mechanical / ultrasonic leveling, encapsulation, casing, current collector welding, and sealing, before being assembled into a finished battery. Therefore, the performance of the battery cell directly impacts the overall battery performance, making the cell preparation and current collector welding processes crucial before assembly.

[0003] Currently, when welding current collectors at the ends of battery cells, the cells are typically fed along a linearly distributed cell feeding line. A current collector loading line is set up on one side of the cell feeding line, which transfers the current collectors to a welding clamping mechanism on the cell feeding line. The welding clamping mechanism clamps the current collectors between the end of the battery cell and the welding head, so that the current collectors can be welded using laser welding equipment.

[0004] However, in practical applications, it has been found that existing current collector welding systems can only be installed along the extension direction of the cell feeding line, which results in a large space requirement and low welding efficiency. Summary of the Invention

[0005] The main objective of this invention is to provide an integrated machine for coating and welding current collectors of the positive and negative electrodes of a battery cell, so as to solve the above-mentioned technical problems and automatically weld current collectors to the positive and negative electrodes of the battery cell.

[0006] To achieve the above objectives, the present invention adopts the following technical solution: A battery cell positive and negative current collector coating and welding integrated machine includes a battery cell feeding device, a negative current collector welding device and a positive current collector welding device. The battery cell feeding device feeds the battery cell to the negative current collector welding device, the negative current collector welding device welds the negative current collector to the negative electrode of the battery cell, and then the battery cell is conveyed to the positive current collector welding device to weld the positive current collector to the positive electrode of the battery cell. The battery cell feeding device includes a battery cell preparation mechanism, a battery cell conveying mechanism, and a battery cell feeding mechanism. The battery cell conveying mechanism includes a battery cell conveying belt and a battery cell storage structure. Multiple battery cell storage structures are installed on the battery cell conveying belt. The battery cell preparation mechanism feeds the battery cells onto the battery cell storage structures for storage. The battery cell feeding mechanism feeds the battery cells from the battery cell storage structures onto the negative electrode current collector welding device. The negative electrode current collector welding device includes: The negative electrode turntable mechanism is used to receive the battery cells transferred from the battery cell feeding mechanism, with the negative electrode of the battery cell facing upwards; The negative electrode current collector feeding mechanism is used to feed the negative electrode current collector onto the negative electrode of the battery cell located on the negative electrode turntable mechanism; The negative electrode welding mechanism welds the negative electrode current collector to the negative electrode of the battery cell; The cell transfer mechanism flips and transfers the cell onto the positive current collector welding device; The positive electrode current collector welding device includes: A positive electrode rotating disk mechanism is used to receive the battery cells transferred from the battery cell transfer mechanism; The positive current collector feeding mechanism is used to feed the positive current collector onto the positive current collector coating mechanism. The positive current collector coating mechanism is used to coat the positive current collector with rubber and then transfer it to the positive terminal of the battery cell located in the positive current collector mechanism. The positive electrode welding mechanism welds the positive electrode current collector to the positive electrode of the battery cell. The positive electrode bending mechanism bends the positive electrode current collector welded to the positive electrode of the battery cell.

[0007] As a preferred technical solution, the negative electrode collector feeding mechanism includes a negative electrode collector transferring component, a negative electrode collector storage component, and a negative electrode collector lifting component. The negative electrode collector transferring component is installed above the negative electrode collector storage component, and the negative electrode collector lifting component is installed in the negative electrode collector storage component. The negative electrode collector storage component rotates relative to the negative electrode collector lifting component. The negative electrode collector storage component includes a negative electrode storage turntable and a negative electrode storage unit, and the negative electrode storage unit is installed on the negative electrode storage turntable.

[0008] As a preferred technical solution, the negative electrode storage unit includes a negative electrode storage base and a negative electrode storage structure. The negative electrode storage base is fixed in the negative electrode storage turntable, and the negative electrode storage structure is snapped onto the negative electrode storage base. The negative electrode storage structure includes a negative electrode storage bucket and a negative electrode storage movable seat, and multiple negative electrode storage buckets are equidistantly fixed on the negative electrode storage movable seat.

[0009] As a preferred technical solution, the negative electrode storage tank is provided with a lifting groove that allows the negative electrode current collector lifting assembly to enter.

[0010] As a preferred technical solution, the negative electrode current collector lifting assembly includes a lifting drive structure, an upper base plate, a lower base plate, a guide rod, a lead screw, a movable plate, and a claw structure. The claw structure is mounted on the movable plate. The upper base plate is connected and fixed to the lower base plate via the guide rod. The two ends of the lead screw are mounted on the upper base plate and the lower base plate. The movable plate engages with the lead screw. The lifting drive structure drives the lead screw to rotate, thereby moving the movable plate along the guide rod.

[0011] As a preferred technical solution, the jaw structure includes a jaw cylinder and a jaw, and the jaw cylinder drives the jaw to move.

[0012] As a preferred technical solution, the negative electrode collector transfer assembly includes a transfer lifting cylinder, a transfer mounting base, a transfer rotary motor, a rotary mounting base, and a suction cup unit. The suction cup unit is installed on both sides of the rotary mounting base, the transfer rotary motor is installed on the transfer mounting base, the transfer lifting cylinder drives the transfer mounting base to move, and the transfer rotary motor drives the rotary mounting base to rotate.

[0013] As a preferred technical solution, the suction cup unit includes a suction cup mounting base, a suction cup drive motor, and a suction cup. The suction cup drive motor drives the suction cup mounting base to rotate, and the suction cup is mounted on the suction cup mounting base.

[0014] As a preferred technical solution, the positive electrode current collector coating mechanism includes an annular guide rail conveying mechanism, a defective rejection mechanism, a glue application mechanism, a glue wrapping mechanism, a glue leakage detection mechanism, a defective glue rejection mechanism, and a current collector unloading mechanism. The annular guide rail conveying mechanism includes a material transfer component and an annular guide rail. Multiple material transfer components move along the annular guide rail. The positive electrode current collector loading mechanism, the defective rejection mechanism, the glue application mechanism, the glue wrapping mechanism, the glue leakage detection mechanism, the defective glue rejection mechanism, and the current collector unloading mechanism are arranged in an orderly manner around the annular guide rail.

[0015] As a preferred technical solution, the material transfer assembly includes a material transfer base, a placement base, and a pressing unit. The placement base and the pressing unit are mounted on the material transfer base. The positive electrode current collector is placed on the placement base. The pressing unit presses the positive electrode current collector onto the placement base. A placement groove is provided on the top of the placement base. The pressing unit includes a first pressing cylinder, a second pressing cylinder, a pressing block, a first pressing movable block, and a second pressing movable block. The first pressing cylinder is mounted on the material transfer base. The second pressing cylinder is mounted on the first pressing movable block. The pressing block is mounted on the second pressing movable block. The first pressing cylinder drives the first pressing movable block to move, and the second pressing cylinder drives the second pressing movable block to move.

[0016] The beneficial effects of this invention are as follows: The above-mentioned integrated welding machine for positive and negative electrode current collectors of battery cells has a battery cell feeding device that aligns with the winding and unloading conveyor belt. It can directly grab four battery cells from the winding and unloading conveyor belt, flip them so that the negative electrode of the battery cell faces upward and is transported to the negative electrode current collector welding device. The negative electrode current collector feeding mechanism is equipped with four negative electrode storage structures, which enables the negative electrode current collector transfer component to grab four current collectors at one time, improving feeding efficiency. The battery cell transfer mechanism can flip the battery cells so that the positive electrode of the battery cell faces upward and is transported to the positive electrode current collector welding device for welding. The positive electrode current collector coating mechanism can perform defective product rejection, glue application, glue wrapping, glue leakage detection, and defective glue rejection on the positive electrode current collector. Finally, it is fed to the current collector welding machine and welded to the positive electrode of the battery cell. Finally, the positive electrode current collector welded to the positive electrode of the battery cell is bent by the positive electrode bending mechanism, thereby realizing automatic welding of current collectors for the positive and negative electrodes of the battery cell, thereby improving production efficiency. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the integrated welding machine for coating the positive and negative current collectors of the battery cell, which is involved in this invention. Figure 2 This is a schematic diagram of the negative electrode current collector welding device involved in the present invention. Figure 3 This is a schematic diagram of the positive electrode current collector welding device involved in the present invention; Figure 4 This is a schematic diagram of the negative electrode current collector feeding mechanism involved in the present invention. Figure 5 This is a schematic diagram of the negative electrode current collector lifting assembly involved in the present invention; Figure 6 This is a schematic diagram of the negative electrode current collector transfer assembly involved in the present invention; Figure 7 This is a schematic diagram of the material transfer assembly involved in the present invention; Figure 8 This is a schematic diagram of the positive electrode bending mechanism involved in the present invention; Figure 9 This is a schematic diagram of the briquetting assembly involved in the present invention; Figure 10 This is a schematic diagram of the extrusion assembly involved in the present invention; Figure 11 This is a schematic diagram of the structure of the bent collector plate involved in this invention. Detailed Implementation

[0018] To make the objectives, technical solutions, and advantages of this invention clearer, the invention will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative and not intended to limit the invention.

[0019] Please combine Figure 1 , Figure 2 and Figure 3 As shown, a battery cell positive and negative current collector coating and welding integrated machine includes a battery cell feeding device 1, a negative current collector welding device 2, and a positive current collector welding device 3. The battery cell feeding device 1 aligns with the winding unloading conveyor belt and uploads the battery cell to the negative current collector welding device 2. The negative current collector welding device 2 welds the negative current collector to the negative electrode of the battery cell. Then, it is conveyed to the positive current collector welding device 3 to weld the positive current collector to the positive electrode of the battery cell, so that current collectors are welded to both ends of the battery cell.

[0020] The battery cell feeding device 1 includes a battery cell preparation mechanism 11, a battery cell conveying mechanism 12, and a battery cell feeding mechanism 13. The battery cell conveying mechanism 12 includes a battery cell conveying belt 121 and a battery cell storage structure 122. Multiple battery cell storage structures 122 are installed on the battery cell conveying belt 121. The battery cell preparation mechanism 11 uploads the battery cells to the battery cell storage structure 122 for storage. The battery cell feeding mechanism 13 uploads the battery cells on the battery cell storage structure 122 to the negative electrode current collector welding device 2. The negative electrode current collector welding device 2 includes: The negative electrode turntable mechanism 21 is used to receive the battery cells transmitted from the battery cell feeding mechanism 13, with the negative electrode of the battery cell facing upwards. It includes a negative electrode turntable 211, a negative electrode sleeve structure 212, and a negative electrode positioning mechanism 215. Multiple negative electrode sleeve structures 212 and multiple negative electrode positioning mechanisms 215 are equidistantly installed on the negative electrode turntable 211. The battery cell is placed on the negative electrode sleeve structure 212 and clamped. The negative electrode positioning mechanism 215 moves to the negative electrode of the battery cell and is fixed, which can position the negative electrode current collector and improve the consistency of the position of the negative electrode current collector on the negative electrode of the battery cell during welding. The negative electrode sleeve structure 212 includes a negative electrode sleeve clamping cylinder 213 and a negative electrode sleeve contour block 214. The negative electrode sleeve clamping cylinder 213 drives the two negative electrode sleeve contour blocks 214 to move relative to each other. The negative electrode current collector feeding mechanism 22 is used to feed the negative electrode current collector onto the negative electrode of the battery cell located on the negative electrode turntable mechanism 21; The negative electrode welding mechanism 23 welds the negative electrode current collector to the negative electrode of the battery cell; The cell transfer mechanism 24 flips and transfers the cell to the positive electrode current collector welding device 3. It includes a cell transfer clamping assembly 241 and a cell transfer flipping assembly 242. The cell transfer clamping assembly 241 clamps the cell from the negative electrode sleeve structure 212 and stops the cell at the cell transfer flipping assembly 242. The cell transfer flipping assembly 242 clamps the cell and rotates it 180° so that the positive electrode of the cell faces upward. Then it rotates and places the cell on the positive electrode turntable mechanism 33. The positive current collector welding device 3 includes: The positive electrode turntable mechanism 33 is used to receive the battery cells transferred from the battery cell transfer mechanism 24 with the positive electrode facing upward. It includes a positive electrode turntable 331, a positive electrode sleeve structure 332, and a positive electrode positioning mechanism 335. Multiple positive electrode sleeve structures 332 and multiple positive electrode positioning mechanisms 335 are equidistantly installed on the positive electrode turntable 331. The battery cell is placed on the positive electrode sleeve structure 332 and clamped. The positive electrode positioning mechanism 335 moves to the positive electrode of the battery cell and is fixed, which can position the positive electrode current collector and improve the consistency of the position of the positive electrode current collector on the positive electrode of the battery cell during welding. The positive electrode sleeve structure 332 includes a positive electrode sleeve clamping cylinder 333 and a positive electrode sleeve contour block 334. The positive electrode sleeve clamping cylinder 333 drives the two positive electrode sleeve contour blocks 334 to move relative to each other. The positive current collector feeding mechanism 31 is used to feed the positive current collector onto the positive current collector coating mechanism 32; The positive current collector coating mechanism 32 is used to transfer the coated positive current collector to the positive terminal of the battery cell located in the positive current collector mechanism. Positive electrode welding mechanism 34 welds the positive electrode current collector to the positive electrode of the battery cell; The positive electrode bending mechanism 35 bends the positive electrode current collector welded to the positive electrode of the battery cell.

[0021] Please refer to Figure 4As shown, the negative electrode current collector feeding mechanism 22 and the positive electrode current collector feeding mechanism 31 have the same structure. Therefore, in this embodiment, only the negative electrode current collector feeding mechanism 22 is described as an example. The negative electrode current collector feeding mechanism 22 includes a negative electrode current collector transferring component 221, a negative electrode current collector storage component 222, and a negative electrode current collector lifting component 223. The negative electrode current collector transferring component 221 is installed above the negative electrode current collector storage component 222, and the negative electrode current collector lifting component 223 is installed in the negative electrode current collector storage component 222. The negative electrode current collector storage component 222 rotates relative to the negative electrode current collector lifting component 223. The negative electrode current collector storage component 222 includes a negative electrode storage turntable 2221 and a negative electrode storage unit 2222. The negative electrode storage unit 2222 is installed on the negative electrode storage turntable 2221. In this embodiment, the negative electrode storage unit 2222 is located on the negative electrode storage turntable 2221. Four negative electrode storage units 2222 are provided on the 2221. The negative electrode collectors are stored on the negative electrode storage units 2222. The negative electrode collector lifting assembly 223 is installed in the middle of the negative electrode storage turntable 2221. The negative electrode collector lifting assembly 223 lifts the negative electrode collectors stored on the negative electrode storage units 2222. The negative electrode collector transfer assembly 221 adsorbs the negative electrode collector located on the top of the negative electrode storage unit 2222 and vibrates it, and moves the negative electrode collector to the negative electrode positioning mechanism 215. When one negative electrode storage unit 2222 has finished feeding, the negative electrode storage turntable 2221 rotates 90° relative to the negative electrode collector lifting assembly 223, so that the negative electrode collector lifting assembly 223 aligns with another negative electrode storage unit 2222. The negative electrode collector lifting assembly 223 lifts the negative electrode collector in the negative electrode storage unit 2222.

[0022] Specifically, the negative electrode storage unit 2222 includes a negative electrode storage base 2223 and a negative electrode storage structure. The negative electrode storage base 2223 is fixed in the negative electrode storage turntable 2221, and the negative electrode storage structure is mounted on the negative electrode storage base 2223. The negative electrode storage structure includes a negative electrode storage bucket 2225 and a negative electrode storage moving seat 2224. Multiple negative electrode storage buckets 2225 are equidistantly fixed on the negative electrode storage moving seat 2224. After a negative electrode storage structure is filled, it can be removed from the negative electrode storage base 2223 and replaced with a negative electrode storage structure that is full of negative electrode collectors. The negative electrode storage bucket 2225 is provided with a lifting groove 2226 that allows the negative electrode collector lifting assembly 223 to enter, which is used to push the negative electrode collector stored in the negative electrode storage bucket 2225 to rise.

[0023] Please refer to Figure 5As shown, specifically, the negative electrode current collector lifting assembly 223 includes a lifting drive structure 2231, an upper substrate 2234, a lower substrate 2235, a guide rod 2233, a lead screw 2232, a movable plate 2237, and a claw structure 2236. The claw structure 2236 is mounted on the movable plate 2237. The upper substrate 2234 is connected and fixed to the lower substrate 2235 through the guide rod 2233. The two ends of the lead screw 2232 are mounted on the upper substrate 2234 and the lower substrate 2235. The movable plate 2237 engages with the lead screw 2232. The lifting drive structure 2231 drives the lead screw 2232 to rotate, thereby moving the movable plate 2237 along the guide rod 2233. The gripper structure 2236 includes a gripper cylinder 22361 and a gripper 22362. The gripper cylinder 22361 drives the gripper 22362 to move. The width of the gripper 22362 matches the width of the lifting groove 2226, and the length of the gripper 22362 is greater than the diameter of the negative electrode storage tank 2225. The lifting drive structure 2231 drives the lead screw 2232 to rotate, causing the movable plate 2237 to move along the guide rod 2233, thereby realizing the lifting and lowering of the gripper structure 2236.

[0024] Please refer to Figure 6As shown, the negative electrode collector transfer assembly 221 includes a transfer lifting cylinder 2211, a transfer mounting base 2212, a transfer rotary motor 2213, a rotary mounting base 2214, and a suction cup unit 2215. The suction cup unit 2215 is mounted on both sides of the rotary mounting base 2214, and the transfer rotary motor 2213 is mounted on the transfer mounting base 2212. The transfer lifting cylinder 2211 drives the transfer mounting base 2212 to move, and the transfer rotary motor 2213 drives the rotary mounting base 2214 to rotate. The suction cup unit 2215 includes a suction cup mounting base 2217, a suction cup drive motor 2216, and a suction cup 2218. The suction cup drive motor 2216 drives the suction cup mounting base 2217 to rotate, and the suction cup 2218 is mounted on the suction cup mounting base 2217. In this embodiment, four suction cups 2218 are provided. When the negative electrode collector plate transfer assembly 221 needs to adsorb the negative electrode collector plate, the transfer lifting cylinder 2211 drives the transfer mounting base 2212 to move, which in turn drives the transfer rotary motor 2213 to move, aligning the suction cup unit 2215 with the top of the negative electrode storage tank 2225. The suction cup drive motor 2216 drives the suction cup mounting base 2217 to move, thereby bringing the suction cup 2218 into contact with the negative electrode collector plate. This causes all four suction cups 2218 to simultaneously adsorb the negative electrode collector plate and vibrate, preventing adjacent negative electrode collector plates from sticking together. The transfer lifting cylinder 2211 then resets, and subsequently, the transfer rotary motor 2213 drives the rotary mounting base 2214 to rotate 180°, aligning the suction cup unit 2215 on the other side with the negative electrode storage tank 2225. At the top of 25, the negative electrode collector plate lifting assembly 223 lifts the negative electrode collector plate in the negative electrode storage tank 2225 to a height equal to the thickness of the negative electrode collector plate. The material transfer lifting cylinder 2211 drives the material transfer mounting base 2212 to move, thereby causing the suction cups 2218 to contact the negative electrode collector plate. The four suction cups 2218 adsorb the negative electrode collector plate and shake it. The material transfer lifting cylinder 2211 resets, so that the suction cup units 2215 on both sides adsorb the negative electrode collector plates, thus satisfying the requirement of feeding multiple negative electrode collector plates at one time. Finally, the material transfer lifting cylinder 2211 drives the material transfer mounting base 2212 to move above the negative electrode positioning mechanism 215, placing the negative electrode collector plate on the adsorption unit 2215 onto the negative electrode positioning mechanism 215.

[0025] Please continue to refer to this. Figure 3As shown, the positive electrode current collector coating mechanism 32 includes an annular guide rail conveying mechanism 321, a defective rejection mechanism 322, a glue application mechanism 323, a glue wrapping mechanism 324, a glue leakage detection mechanism 325, a defective glue rejection mechanism 326, and a current collector unloading mechanism 327. The annular guide rail conveying mechanism 321 includes a material transfer component 3212 and an annular guide rail 3211. Multiple material transfer components 3212 move along the annular guide rail 3211. The positive electrode current collector loading mechanism 31, the defective rejection mechanism 322, the glue application mechanism 323, the glue wrapping mechanism 324, the glue leakage detection mechanism 325, the defective glue rejection mechanism 326, and the current collector unloading mechanism 327 are arranged in an orderly manner around the annular guide rail 3211, so that the material transfer components 3212 can move sequentially to each component for operation. The positive electrode current collector loading mechanism 31 is used to load the positive electrode current collector... The positive electrode current collector is fed to the transfer assembly 3212, which sequentially moves the positive electrode current collector to the defective rejection mechanism 322, the adhesive application mechanism 323, the adhesive wrapping mechanism 324, the adhesive leakage detection mechanism 325, the defective adhesive rejection mechanism 326, and the current collector unloading mechanism 327. The defective rejection mechanism 322 rejects the defective positive electrode current collector. The adhesive application mechanism 323 applies adhesive to the handle of the positive electrode current collector. The adhesive wrapping mechanism 324 wraps adhesive on the back of the body of the positive electrode current collector. The adhesive leakage detection mechanism 325 detects adhesive leakage in the positive electrode current collector after adhesive wrapping. The defective adhesive rejection mechanism 326 rejects the positive electrode current collector with defective adhesive application. The current collector unloading mechanism 327 transfers the positive electrode current collector after inspection to the positive electrode welding mechanism 34. The defective rejection mechanism 322 and the defective adhesive rejection mechanism 326 have the same structure.

[0026] Please refer to Figure 7 As shown, specifically, the transfer assembly 3212 includes a transfer base 3213, a placement base 3214, and a pressing unit 3215. The placement base 3214 and the pressing unit 3215 are mounted on the transfer base 3213. The positive electrode current collector is placed on the placement base 3214. The pressing unit 3215 presses the positive electrode current collector onto the placement base 3214. The top of the placement base 3214 is provided with a placement groove 32141, allowing the body of the positive electrode current collector to be placed in the placement groove 32141. The pressing unit 3215 includes a first pressing cylinder 3216 and a second pressing cylinder 3218. The device comprises a clamping block 32110, a first clamping movable block 3217, and a second clamping movable block 3219. A first clamping cylinder 3216 is mounted on a material transfer seat 3213, a second clamping cylinder 3218 is mounted on the first clamping movable block 3217, and a clamping block 32110 is mounted on the second clamping movable block 3219. The first clamping cylinder 3216 drives the first clamping movable block 3217 to move, and the second clamping cylinder 3218 drives the second clamping movable block 3219 to move, thereby pressing the clamping block 32110 against the edge of the collector plate body to fix the positive electrode collector plate.

[0027] like Figure 8 and Figure 11 As shown, the positive electrode bending mechanism 35 includes a pressing assembly 351, a driving assembly 352, and a pressing assembly 353. The pressing assembly 351 presses the positive electrode current collector body portion b1 located at the top of the battery cell a. The driving assembly 352 drives the pressing assembly 353 to align with the top of the battery cell a. The pressing assembly 353 bends the positive electrode current collector handle portion b2 along the bending portion b3 relative to the positive electrode current collector body portion b1.

[0028] Please refer to Figure 9 As shown, the pressing assembly 351 includes a pressing cylinder 3511, a pressing block 3512, a pressing block mounting base 3513, and a positioning unit 3515. The pressing block 3512 is provided with a rotating shaft 3514, and the pressing block 3512 is mounted on the pressing block mounting base 3513 through the rotating shaft 3514, thereby realizing that the angle of the pressing block 3512 can be adjusted. The pressing cylinder 3511 drives the pressing block mounting base 3513 to move. The positioning unit 3515 is provided on the lower side of the pressing block mounting base 3513 so that the lower end of the pressing block 3512 can be aligned with the top of the battery cell. The positioning unit 3515 includes a first adjustment structure 3516, a second adjustment structure 3517, and a positioning block 3518. The first adjustment structure 3516 is connected to the pressure block mounting base 3512, the second adjustment structure 3517 is connected to the first adjustment structure 3516, and the second adjustment structure 3516 is connected to the positioning block 3518. The positioning block 3518 is provided with a positioning groove 3519 that allows the battery cell to enter. Adjusting the first adjustment structure 3516 can move the second adjustment structure 3517, and adjusting the second adjustment structure 3517 can move the positioning block 3518, so that the three sides of the positioning groove 3519 are in contact with the side wall of the battery cell.

[0029] Please continue to refer to this. Figure 8 As shown, the drive assembly 352 includes a drive motor 3521 and a drive module 3522. The drive motor 3521 drives the drive module 3522 to move, thereby moving the extrusion assembly 353. In this embodiment, the drive module 3522 is a lead screw drive module.

[0030] Please refer to Figure 10As shown, the extrusion assembly 353 includes a cylinder mounting base 3532, an extrusion cylinder 3531, an extrusion block mounting base 3533, an extrusion block 3534, and an angle adjustment unit 3535. The cylinder mounting base 3532 is rotatably disposed in the angle adjustment unit 3535. The extrusion cylinder 3531 is mounted on the cylinder mounting base 3532, and the extrusion block 3534 is mounted on the extrusion block mounting base 3533. The extrusion cylinder 3531 drives the extrusion block mounting base 3533 to move, thereby bending the positive electrode current collector handle b2. The bending slope of the extrusion block 3534 is parallel to the side of the pressure block 3512 near the extrusion block 3534. The angle adjustment unit 3535 includes an adjustment base 3537 and an angle adjustment platform 3536. The angle adjustment platform 3536 is connected to the cylinder mounting seat 3532, which is rotatably mounted on the adjustment base 3537. The adjustment base 3537 is connected to the drive module 353522. The angle adjustment platform 3536 adjusts the rotation of the cylinder mounting seat 3532 relative to the adjustment base 3537. The angle adjustment platform 3536 can rotate 360° and is marked with corresponding scales. The accuracy of the angle adjustment platform 3536 can reach ±5′. As a preferred embodiment, the cylinder mounting seat 3532 is provided with a guide block 3538, and the adjustment base 3537 is provided with an arc groove 3539. The guide block 3538 moves along the arc groove 3539, thereby limiting the rotation angle of the cylinder mounting seat 3532.

[0031] Before use, the above-mentioned positive electrode current collector welding bending device adjusts the angle of the pressure block 3512 according to the production requirements of the battery cell model, and adjusts the position of the positioning block 3518 through the first adjustment structure 3516 and the second adjustment structure 3517 so that the battery cell a is aligned with the bottom of the pressure block 3512 after passing through the positioning block 3518. The angle adjustment table 3536 is operated to rotate the cylinder mounting seat 3532 relative to the adjustment base 3537, so that the bending slope of the extrusion block 3534 is parallel to the side of the pressure block 3512 near the extrusion block 3534. In use, the battery cell with the positive current collector plate b welded is placed in the positive sleeve structure 332 by the feeding mechanism. The positive sleeve clamping cylinder 333 drives the positive sleeve contour block 334 to move relative to the battery cell, thereby clamping the battery cell. The positive turntable 331 rotates, causing the positive sleeve structure 332 containing the battery cell to rotate to the positive bending mechanism 35. The pressing cylinder 3511 drives the pressing mounting base 3513 to move, so that the battery cell passes through the placement groove 32141 and the pressing block 3512 is pressed into the positive current collector plate body part b1 located on top of the battery cell. The extrusion cylinder 3531 drives the extrusion block 3534 to approach the battery cell, driving... The moving cell 3511 drives the driving module 353522 to move, causing the extrusion block 3534 to move from below the cell to the top of the cell, keeping the lower end of the extrusion block 3534 flush with the top of the cell. This causes the positive current collector handle b2 to bend relative to the positive current collector body b1. The extrusion cylinder 3531 drives the extrusion block 3534 to move, moving the end of the extrusion block 3534 to the bending part b3. Through the interaction between the side of the pressure block 3512 and the bending slope of the extrusion block 3534, the positive current collector handle b2 and the bending slope of the extrusion block 3534 are made parallel, thus completing one bending.

[0032] The embodiments described above are merely preferred examples of the present invention and are not intended to limit the scope of the present invention. Therefore, all equivalent changes or modifications made to the structure, features and principles described in the claims of the present invention should be included within the scope of the present invention patent application.

Claims

1. A machine for integrating adhesive coating and welding of positive and negative current collectors of a battery cell, characterized in that, It includes a battery cell feeding device, a negative current collector welding device, and a positive current collector welding device. The battery cell feeding device feeds the battery cell to the negative current collector welding device, which welds the negative current collector to the negative electrode of the battery cell. Then, it is conveyed to the positive current collector welding device to weld the positive current collector to the positive electrode of the battery cell. The battery cell feeding device includes a battery cell preparation mechanism, a battery cell conveying mechanism, and a battery cell feeding mechanism. The battery cell conveying mechanism includes a battery cell conveying belt and a battery cell storage structure. Multiple battery cell storage structures are installed on the battery cell conveying belt. The battery cell preparation mechanism feeds the battery cells onto the battery cell storage structures for storage. The battery cell feeding mechanism feeds the battery cells from the battery cell storage structures onto the negative electrode current collector welding device. The negative electrode current collector welding device includes: The negative electrode turntable mechanism is used to receive the battery cells transferred from the battery cell feeding mechanism, with the negative electrode of the battery cell facing upwards; The negative electrode current collector feeding mechanism is used to feed the negative electrode current collector onto the negative electrode of the battery cell located on the negative electrode turntable mechanism; The negative electrode welding mechanism welds the negative electrode current collector to the negative electrode of the battery cell; The cell transfer mechanism flips and transfers the cell onto the positive current collector welding device; The positive electrode current collector welding device includes: A positive electrode rotating disk mechanism is used to receive the battery cells transferred from the battery cell transfer mechanism; The positive current collector feeding mechanism is used to feed the positive current collector onto the positive current collector coating mechanism. The positive current collector coating mechanism is used to coat the positive current collector with rubber and then transfer it to the positive terminal of the battery cell located in the positive current collector mechanism. The positive electrode welding mechanism welds the positive electrode current collector to the positive electrode of the battery cell. The positive electrode bending mechanism bends the positive electrode current collector welded to the positive electrode of the battery cell. The negative electrode collector feeding mechanism includes a negative electrode collector transferring component, a negative electrode collector storage component, and a negative electrode collector lifting component. The negative electrode collector transferring component is installed above the negative electrode collector storage component. The negative electrode collector lifting component is installed in the negative electrode collector storage component, and the negative electrode collector storage component rotates relative to the negative electrode collector lifting component. The negative electrode collector storage component includes a negative electrode storage turntable and a negative electrode storage unit. The negative electrode storage unit is installed on the negative electrode storage turntable. The negative electrode storage unit includes a negative electrode storage base and a negative electrode storage structure. The negative electrode storage base is fixed in the negative electrode storage turntable, and the negative electrode storage structure is snapped onto the negative electrode storage base. The negative electrode storage structure includes a negative electrode storage bucket and a negative electrode storage movable seat, and multiple negative electrode storage buckets are equidistantly fixed on the negative electrode storage movable seat. The positive electrode current collector coating mechanism includes an annular guide rail conveying mechanism, a defective rejection mechanism, a glue application mechanism, a glue wrapping mechanism, a glue leakage detection mechanism, a defective glue rejection mechanism, and a current collector unloading mechanism. The annular guide rail conveying mechanism includes a material transfer component and an annular guide rail. Multiple material transfer components move along the annular guide rail. The positive electrode current collector loading mechanism, the defective rejection mechanism, the glue application mechanism, the glue wrapping mechanism, the glue leakage detection mechanism, the defective glue rejection mechanism, and the current collector unloading mechanism are arranged in an orderly manner around the annular guide rail.

2. The integrated welding machine for the positive and negative current collectors of the battery cell according to claim 1, characterized in that, The negative electrode storage tank is provided with a lifting slot that allows the negative electrode current collector lifting assembly to enter.

3. The integrated welding machine for the positive and negative current collectors of the battery cell according to claim 1, characterized in that, The negative electrode current collector lifting assembly includes a lifting drive structure, an upper base plate, a lower base plate, a guide rod, a lead screw, a movable plate, and a claw structure. The claw structure is mounted on the movable plate. The upper base plate is connected and fixed to the lower base plate via the guide rod. The two ends of the lead screw are mounted on the upper base plate and the lower base plate. The movable plate engages with the lead screw. The lifting drive structure drives the lead screw to rotate, thereby moving the movable plate along the guide rod.

4. The integrated welding machine for the positive and negative current collectors of the battery cell according to claim 3, characterized in that, The gripper structure includes a gripper cylinder and a gripper, and the gripper cylinder drives the gripper to move.

5. The integrated welding machine for the positive and negative current collectors of the battery cell according to claim 1, characterized in that, The negative electrode collector transfer assembly includes a transfer lifting cylinder, a transfer mounting base, a transfer rotary motor, a rotary mounting base, and a suction cup unit. The suction cup unit is installed on both sides of the rotary mounting base, and the transfer rotary motor is installed on the transfer mounting base. The transfer lifting cylinder drives the transfer mounting base to move, and the transfer rotary motor drives the rotary mounting base to rotate.

6. The integrated welding machine for the positive and negative current collectors of the battery cell according to claim 5, characterized in that, The suction cup unit includes a suction cup mounting base, a suction cup drive motor, and a suction cup. The suction cup drive motor drives the suction cup mounting base to rotate, and the suction cup is mounted on the suction cup mounting base.

7. The integrated welding machine for the positive and negative current collectors of the battery cell according to claim 1, characterized in that, The material transfer assembly includes a material transfer base, a placement base, and a pressing unit. The placement base and the pressing unit are mounted on the material transfer base. The positive electrode current collector is placed on the placement base. The pressing unit presses the positive electrode current collector onto the placement base. A placement groove is provided on the top of the placement base. The pressing unit includes a first pressing cylinder, a second pressing cylinder, a pressing block, a first pressing movable block, and a second pressing movable block. The first pressing cylinder is mounted on the material transfer base. The second pressing cylinder is mounted on the first pressing movable block. The pressing block is mounted on the second pressing movable block. The first pressing cylinder drives the first pressing movable block to move, and the second pressing cylinder drives the second pressing movable block to move.

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