Battery cell winding apparatus

Abstract

The application relates to a battery cell winding device which comprises two material roll in-sheet mechanisms, a diaphragm cutter mechanism, a tail adhesive mechanism, a material feeding mechanism and a winding needle mechanism. The two material roll in-sheet mechanisms respectively transmit the two material rolls to the winding needle mechanism after rectifying the two material rolls. The diaphragm cutter mechanism cuts the first material roll after the winding needle mechanism winds the two material rolls to form a battery cell. The tail adhesive mechanism adheres tail adhesive on the battery cell. The material feeding mechanism feeds the battery cell and feeds adhesive paper to the winding needle mechanism. The winding needle mechanism adsorbs the adhesive paper, the cut material roll end is adhered to the adhesive paper, and the material roll is directly wound on the winding needle mechanism. The material feeding mechanism feeds the adhesive paper to the winding needle mechanism to directly wind the adhered material roll, and the diaphragm cutter mechanism cuts the material roll during winding, so that the time for fixing the material roll and cutting the material roll is saved, the winding efficiency is improved, the two material roll in-sheet mechanisms rectify the material rolls and then transmit the material rolls to the winding needle mechanism, and the neatness of the two material rolls during winding is ensured.

Description

Technical Field

[0001] This invention relates to the field of lithium battery production technology, and in particular to a cell winding device. Background Technology

[0002] Lithium-ion batteries are increasingly widely used due to their advantages such as small size, light weight, and large capacity. The electrode dimensions of lithium batteries require them to be both long and wide, and very thin. The positive and negative electrode plates are separated by a separator, and their relative positions are strictly controlled. To produce batteries or capacitors with large capacity and low internal resistance, the core must be tightly wound and have neat end faces, requiring smooth and high-quality processing.

[0003] In existing technologies, when winding lithium battery cells, positive electrode sheets, negative electrode sheets, and separators are alternately wound to form the cell. After the electrode sheets on the feeding device are unwound, the roller containing the electrode sheets needs to be removed. However, existing winding machines need to be stopped and the separator head needs to be fixed and clamped by the inner clamp of the winding needle before winding. Therefore, the winding process cannot be carried out continuously, which affects production efficiency. Summary of the Invention

[0004] The main objective of this invention is to provide a battery cell winding device to solve the above-mentioned technical problems and improve production efficiency.

[0005] To achieve the above objectives, the present invention adopts the following technical solution:

[0006] A battery cell winding device includes a first material winding mechanism, a second material winding mechanism, a diaphragm cutter mechanism, a tail adhesive applicator mechanism, a feeding mechanism, and a winding needle mechanism. The first material winding mechanism corrects the deviation of a first material roll and then transmits it to the winding needle mechanism. The second material winding mechanism corrects the deviation of a second material roll and then transmits it to the winding needle mechanism. The winding needle mechanism winds the first and second material rolls to form a battery cell. The diaphragm cutter mechanism cuts the first material roll. The winding needle mechanism rotates until the battery cell is aligned with the tail adhesive applicator. The tail adhesive applicator applies tail adhesive to the battery cell. The winding needle mechanism rotates until the battery cell is aligned with the feeding mechanism. The feeding mechanism feeds the battery cell and applies adhesive paper to the winding needle mechanism. The winding needle mechanism absorbs the adhesive paper. The cut end of the first material roll adheres to the adhesive paper. The first material roll is directly wound on the winding needle mechanism.

[0007] As a preferred technical solution, the needle winding mechanism includes three needle winding bodies and three locking components. The needle winding bodies are aligned with the locking components. Each needle winding body includes a mounting base, a rotating shaft, a spring, and two needle winding structures. The rotating shaft is disposed on the mounting base, and the two needle winding structures are connected through the rotating shaft. The spring is disposed between the mounting base and the needle winding structure, and the locking components are locked to the ends of the needle winding structures.

[0008] As a preferred technical solution, the needle winding structure includes a needle winding mounting base, an inner needle sleeve, and an outer needle winding. One end of the inner needle sleeve is fixed to the needle winding mounting base, and the outer needle winding is disposed on the outer surface of the inner needle sleeve.

[0009] As a preferred technical solution, the first material winding mechanism includes a fixed bracket, a movable bracket, a CCD camera, an encoder roller, an encoder pressure roller, a correction roller, a correction pressure roller, and a drive assembly. The CCD camera, the encoder roller, the encoder pressure roller, the correction roller, and the correction pressure roller are mounted on the movable bracket, and the CCD camera is aligned with the encoder roller. The drive assembly is mounted on the fixed bracket and drives the movable bracket to move. The composite sheet passes sequentially between the encoder roller and the encoder pressure roller, and between the correction roller and the correction pressure roller, before being wound onto a winding needle to form a battery cell.

[0010] As a preferred technical solution, the diaphragm cutter mechanism includes a cutter mounting plate, a fixed plate, a diaphragm cutter assembly, a diaphragm pressure roller, a cutter drive assembly, a pressure roller mounting plate, and a pressure roller drive assembly. The diaphragm cutter assembly is disposed on the cutter mounting plate, the diaphragm pressure roller is rotatably disposed on the pressure roller mounting plate, the pressure roller drive assembly drives the pressure roller mounting plate to move relative to the fixed plate, and the cutter drive assembly drives the cutter mounting plate to move relative to the fixed plate.

[0011] As a preferred technical solution, the feeding mechanism includes a substrate and a flipping component, an adhesive application component, and a clamping component disposed on the substrate. The clamping component feeds the already wound battery cell, the flipping component rotates the substrate, and the adhesive application component applies adhesive tape to the winding needle.

[0012] As a preferred technical solution, the adhesive application assembly includes an adhesive application structure, an adhesive preparation structure, an adhesive application movable plate, and an adhesive application cylinder. The adhesive preparation structure is disposed on both sides of the adhesive application structure, and the adhesive application structure and the adhesive preparation structure are disposed on the adhesive application movable plate. The adhesive application cylinder drives the adhesive application movable plate to move.

[0013] As a preferred technical solution, the adhesive application structure includes an adhesive application block cylinder and an adhesive application block, wherein the adhesive application block cylinder drives the adhesive application block to move.

[0014] As a preferred technical solution, the glue preparation structure includes a glue preparation base, a glue preparation movable seat, a glue preparation roller, an auxiliary glue preparation roller, a glue preparation cylinder, and a glue preparation guide rail. The glue preparation guide rail is disposed on the glue application movable plate. The glue preparation roller and the auxiliary glue preparation roller are rotatably disposed on the glue preparation movable seat. The glue preparation base is connected to the glue preparation movable seat. The glue preparation cylinder drives the glue preparation base to move along the glue preparation guide rail.

[0015] As a preferred technical solution, the clamping assembly includes a clamping plate, a clamping cylinder, a clamping motor, and two grippers. The clamping cylinder is disposed on the substrate, and the clamping motor is disposed on the clamping plate. The clamping cylinder drives the clamping plate to move relative to the substrate, and the clamping motor drives the two grippers to move closer to or further away from each other.

[0016] The beneficial effects of the present invention are as follows: In the above-mentioned battery cell winding equipment, the feeding mechanism takes out the battery cell that has been wound and feeds adhesive paper to the winding needle mechanism. The winding needle mechanism absorbs the adhesive paper, and the ends of the material roll can be directly wound through the adhesive paper without stopping the machine to fix the material roll. The diaphragm cutter mechanism can cut the material roll during winding without stopping the machine to cut, saving the time of fixing the ends of the material roll and cutting the material roll, and improving the winding efficiency. The first material roll feeding mechanism and the second material roll feeding mechanism correct the deviation of the material roll and then transfer it to the winding needle mechanism, which can ensure the uniformity of the two material rolls during winding. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the battery cell winding equipment involved in the present invention;

[0018] Figure 2 This is a schematic diagram of the locking mechanism of the coiled needle body according to the present invention;

[0019] Figure 3 This is a schematic diagram of the structure of the coiled needle body when opened, as per the present invention.

[0020] Figure 4 This is a cross-sectional view of the coiled needle structure involved in the present invention;

[0021] Figure 5 This is a schematic diagram of the structure of the first material winding mechanism involved in the present invention. Figure 1 ;

[0022] Figure 6 This is a schematic diagram of the structure of the first material winding mechanism involved in the present invention. Figure 2 ;

[0023] Figure 7This is a schematic diagram of the diaphragm cutter mechanism involved in the present invention. Figure 1 ;

[0024] Figure 8 This is a schematic diagram of the diaphragm cutter mechanism involved in the present invention. Figure 2 ;

[0025] Figure 9 This is a side view of the diaphragm cutter mechanism involved in the present invention;

[0026] Figure 10 This is a cross-sectional view of the cutter mounting roller involved in the present invention;

[0027] Figure 11 This is a schematic diagram of the feeding mechanism involved in the present invention;

[0028] Figure 12 This is a schematic diagram of the substrate, flipping assembly, adhesive application assembly, and clamping assembly involved in the present invention.

[0029] Figure 13 This is a schematic diagram of the operation of the adhesive application assembly before the adhesive paper is fed to the winding needle, as per the present invention.

[0030] Figure 14 This is a schematic diagram of the operation of the adhesive application assembly of the present invention when feeding adhesive paper to the winding needle;

[0031] Figure 15 This is a schematic diagram of the adhesive application assembly involved in the present invention. Detailed Implementation

[0032] 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.

[0033] like Figure 1As shown, a battery cell winding device includes a first material winding mechanism 1, a second material winding mechanism 2, a diaphragm cutter mechanism 3, a tail adhesive applicator mechanism 4, a feeding mechanism 5, and a winding needle mechanism 6. The first material winding mechanism 1 corrects the deviation of a first material roll a and then transmits it to the winding needle mechanism 6. The second material winding mechanism 2 corrects the deviation of a second material roll b and then transmits it to the winding needle mechanism 6. The winding needle mechanism 6 winds the first material roll a and the second material roll b at the winding station to form a battery cell c. The diaphragm cutter mechanism 3 cuts the first material roll a. The winding needle mechanism 6 rotates 60° to the adhesive applicator station. The tail adhesive applicator 4 adheres tail adhesive to the battery cell c. The winding needle mechanism 5 rotates 60° again... Material feeding mechanism 5 feeds battery cell c and adhesive tape d onto needle winding mechanism 6. Needle winding mechanism 6 adsorbs adhesive tape d, so that the end of the cut first material roll a adheres to adhesive tape d. The first material roll a can be directly wound up without stopping the machine to fix the end of the first material roll a onto needle winding mechanism 6. First material winding sheet mechanism 1 and second material winding sheet mechanism 2 can correct the deviation of the first material roll a and the second material roll b, which can ensure the flatness between the first material roll a and the second material roll b during winding. In this embodiment, the first material roll a and the second material roll b are electrode sheets or foils. Preferably, the first material roll a is a composite electrode sheet with two layers of separators laminated to both ends of the negative electrode sheet, and the second material roll b is a positive electrode sheet.

[0034] Please combine Figure 2 and Figure 3 As shown, the winding needle mechanism 6 includes three winding needle bodies 61 and three locking components 62. The winding needle bodies 61 and the locking components 62 are aligned. When it is necessary to wind the battery cell c, the locking components 62 are connected to the winding needle bodies 61 to expand the diameter of the winding needle bodies 61 before winding. When it is necessary to remove the battery cell c after winding, the locking components 62 are separated from the winding needle bodies 61 to reduce the diameter of the winding needle bodies 61, and the unloading mechanism 5 removes the battery cell c.

[0035] Please combine Figure 2 , Figure 3 and Figure 4As shown, the needle coil body 1 includes a mounting base 611, a rotating shaft 612, a spring 614, and two needle coiling structures 613. The rotating shaft 612 is mounted on the mounting base 611, and the two needle coiling structures 613 are hinged to each other via the rotating shaft 612. The spring 614 is located between the mounting base 611 and the needle coiling structures 613. A needle coiling misalignment gap 614 is provided between the two needle coiling structures 613. The locking component 2 can lock the ends of the needle coiling structures 613, causing the two needle coiling structures 613 to move away from each other, increasing the needle coiling misalignment gap 614, and thus increasing the diameter of the entire needle coil body 61. When the locking component 62 leaves the needle coiling structures 613, the two needle coiling structures 613 move closer to each other due to the force of the spring 614, reducing the needle coiling misalignment gap 614, and thus reducing the diameter of the entire needle coil body 61. The needle winding structure 613 includes a needle winding mounting base 6131, an inner needle sleeve 6132, and an outer needle winding 6133. One end of the inner needle sleeve 6132 is fixed to the needle winding mounting base 6131, and the outer needle winding 6133 is fixed to the outer surface of the inner needle sleeve 6132. The outer needle winding 6133 is provided with a vacuum adsorption chamber 61331, adsorption holes 61332, a diaphragm cutter clearance groove 61333, and an air connector 61334. The vacuum adsorption chamber 61331 is located inside the outer needle winding 6133, and multiple adsorption holes 61332 are equidistantly arranged on the outer surface of the outer needle winding 6133. The vacuum adsorption chamber 61331 communicates with the adsorption holes 61332, and the air connector 61334 communicates with the vacuum adsorption chamber 61331, allowing negative gas to be supplied. The pressure allows the adsorption hole 61332 to adsorb adhesive paper at the unloading station, and then the cut diaphragm end is adhered to the adhesive paper at the winding station. This allows the winding needle body 61 to continue rotating, and the adhesive paper adheres to the cut diaphragm end after the diaphragm cutter cuts the diaphragm, so that the diaphragm can be directly wound around the diaphragm, thereby improving production efficiency. The diaphragm cutter clearance groove 61333 is set on one side of the adsorption hole 61332 to avoid the diaphragm cutter from being exposed, preventing the winding needle body 61 from colliding with the diaphragm cutter mechanism 3, thereby improving the service life of the diaphragm cutter mechanism 3.

[0036] Please continue to combine Figure 2 and Figure 3As shown, the inner needle sleeve 6132 is provided with a locking block 61321, which is located at one end of the inner needle sleeve 6132. The locking block 61321 has an inclined surface 61322 that slopes outward radially along the inner needle sleeve 6132. The locking assembly 62 includes a linear motion module 622 and a locking nozzle 621. The linear motion module 622 drives the locking nozzle 621 to move. The locking nozzle 621 has an inclined guide groove (not shown in the figure). The locking block 61321 moves along the inclined guide groove. When it is necessary to increase the diameter of the coiled needle body 61, the linear motion module 622 drives the locking nozzle 621 to approach the locking block 61321. The locking block 61321 and the inclined guide groove... When the groove contacts, the linear motion module 622 continues to drive, and the locking block 61321 moves along the inclined guide groove through the inclined surface 61322, thereby causing the two winding needle structures 613 to move away from each other. The spring 614 is compressed, increasing the winding needle misalignment gap 614, thereby increasing the diameter of the entire winding needle body 61. When the battery cell c needs to be removed after winding, the diameter of the winding needle body 61 needs to be reduced. The linear motion module 622 drives the locking nozzle 621 away from the locking block 61321, and the two winding needle structures 613 move closer to each other under the force of the spring 614, reducing the winding needle misalignment gap 614, thereby reducing the diameter of the entire winding needle body 61, making it easier to remove the battery cell c.

[0037] Please combine Figure 5 and Figure 6As shown, the first material winding mechanism 1 includes a fixed bracket 11, a movable bracket 12, a CCD camera 13, an encoder roller 14, an encoder pressure roller 15, a correction roller 16, a correction pressure roller 17, a light source 18, a transverse drive assembly 19, and a longitudinal drive assembly 110. The CCD camera 13, encoder roller 14, encoder pressure roller 15, correction roller 16, correction pressure roller 17, and light source 18 are mounted on the movable bracket 12. The CCD camera 13 and light source 18 are aligned with the encoder roller 14. The encoder roller 14, encoder pressure roller 15, correction roller 16, and correction pressure roller 17 are rotatably mounted on the movable bracket 12. The longitudinal drive assembly 110 is mounted on the fixed bracket 11 and drives the movable bracket 12 to move longitudinally relative to the fixed bracket 11. The transverse drive assembly 19 drives... The movable fixed bracket 11 moves laterally, and the first roll a passes sequentially between the encoder roller 14 and the encoder pressure roller 15, and between the correction roller 16 and the correction pressure roller 17. It is then wound onto the needle winding mechanism 6 to form a battery cell c. The CCD camera 13 records the initial entry angle of the first roll a as a reference position. As the needle winding mechanism 6 rotates, the thickness of the battery cell c on the needle winding mechanism 6 gradually increases. When the CCD camera 13 detects a change in the entry angle of the first roll a, the lateral drive assembly 19 drives the fixed bracket 11 to move, thereby moving the encoder roller 14, encoder pressure roller 15, correction roller 16, and correction pressure roller 17. This ensures that the entry angle of the first roll a is consistent, allowing precise control of the encoder value and the winding value to be synchronized, ensuring that each battery cell c formed by winding has the same thickness. The longitudinal drive assembly 110 can drive the movable bracket 12 to move longitudinally relative to the fixed bracket 11 according to the diameter of the needle winding mechanism 6, bringing the correction roller 16 closer to the needle winding mechanism 6, thereby improving the correction effect.

[0038] Please continue to refer to this. Figure 6 As shown, the longitudinal drive assembly 110 and the transverse drive assembly 19 have the same structure. The transverse drive assembly 19 includes a drive motor 191, a drive screw 192, a drive connecting block 193, and a drive guide rail 194. The drive screw 192 meshes with the drive connecting block 193, and the drive connecting block 193 is fixed to the fixed bracket 11. The drive motor 191 drives the drive screw 192 to rotate, thereby moving the drive connecting block 193, which in turn moves the fixed bracket 11 along the drive guide rail 194.

[0039] Please continue to refer to this. Figure 1 As shown, the second material roll feeding mechanism 2 includes a feeding pressure roller 21, a correction sensor 22, and a correction structure 23. The second material roll b is transmitted to the winding needle mechanism 6 through the feeding pressure roller 21. The correction sensor 22 senses the position of the second material roll b. When the second material roll b needs to be corrected, the correction structure 23 drives the second material roll b to move.

[0040] like Figure 7As shown, the diaphragm cutter mechanism 3 includes a cutter mounting plate 31, a fixed plate 32, a diaphragm cutter assembly 35, a diaphragm pressure roller 36, a cutter drive assembly 34, a pressure roller mounting plate 33, a pressure roller drive assembly 37, a roll-up drive assembly 38, and a roll-up pressure roller 39. The diaphragm cutter assembly 35 is mounted on the cutter mounting plate 31, and the diaphragm pressure roller 36 is rotatably mounted on the pressure roller mounting plate 33. The pressure roller drive assembly 37 drives the pressure roller mounting plate 33 to move relative to the fixed plate 32, and the cutter drive assembly 34 drives the cutter mounting plate 31 to move relative to the fixed plate 32. When the battery cell c completes one winding and the first roll a needs to be cut, the cutter drive assembly 34 drives the cutter mounting plate 31 to move relative to the fixed plate 32, so that the diaphragm cutter assembly 35 contacts the battery cell c located on the winding needle body 61, and the pressure roller drive assembly 37 drives the roll-up pressure roller 39. The pressure roller mounting plate 33 moves relative to the fixed plate 32, causing the diaphragm pressure roller 36 to press the first roll a. The winding needle body 61 continues to rotate, driving the diaphragm cutter assembly 35 to cut the first roll a where only two layers of diaphragm are laminated. The cutter drive assembly 34 drives the cutter mounting plate 31 to reset. The residual roll drive assembly 38 drives the residual roll pressure roller 39 to press it onto the battery cell c. The winding needle mechanism 6 rotates 60°, and the diaphragm pressure roller 36 presses the cut end of the first roll a onto another winding needle body 61. The tail adhesive applicator 5 applies the tail adhesive onto the battery cell c. The residual roll drive assembly 38 drives the residual roll pressure roller 39 to reset. This can assist the winding needle body 61 in winding the cut end of the first roll a, and can prevent the cut end of the first roll a from detaching from the winding needle body 61. Subsequently, the cutter pressure roller drive assembly 37 drives the pressure roller mounting plate 33 to reset.

[0041] Please combine Figure 7 , Figure 8 , Figure 9 and Figure 10As shown, the diaphragm cutter assembly 35 includes a cutter mounting roller 351, a cutter rotary motor 352, a synchronous belt 353, and a synchronous pulley 354. The synchronous pulley 354 is fixed to one end of the cutter mounting roller 351. The cutter rotary motor 352 is connected to the synchronous pulley 354 through the synchronous belt 353. The cutter rotary motor 352 drives the synchronous pulley 354 to rotate through the synchronous belt 353, thereby driving the cutter mounting roller 351 to rotate. The cutter mounting roller 351 includes a support shaft 3511, a cutter 3517, a heating tube 3512, a heat insulation layer 3513, a rubber coating layer 3515, and a support layer 3514. A cutter mounting structure 3516 is provided on the support shaft 3511, and the cutter 3517 is detachably mounted on the cutter mounting structure 3516. The heating tube 3512 is located inside the support shaft 3511. The heat insulation layer 3513, the support layer 3514, and the rubber coating layer 3515 are sequentially arranged outside the support shaft 3511, and the heat insulation layer 3513 covers the cutter mounting structure 3516. The support layer 3514 is made of metal and can provide rigid support. The heat insulation layer 3513 can prevent the heat from the heating tube 3512 from dissipating to the cutter mounting roller 351 and can block the heat transfer to the rubber coating layer 3515, thereby preventing damage to the first roll a. The rubber coating layer 3515 can prevent metal debris from being rolled into the battery cell c.

[0042] Please continue to refer to this. Figure 9 As shown, the cutter drive assembly 34 includes a cutter drive motor 341, a cutter drive screw 342, a cutter drive guide rail 345, a cutter drive connecting block 343, and a cutter drive slider 344. The cutter drive slider 344 is fixed to the upper end face of the cutter mounting plate 31, and the cutter drive guide rail 345 is fixed to the lower end face of the fixing plate 32. The cutter drive connecting block 343 meshes with the cutter drive screw 342 and is fixed to the cutter mounting plate 31. The cutter drive motor 341 drives the cutter drive screw 342 to rotate, which in turn moves the cutter drive connecting block 343, thereby causing the cutter drive slider 344 to move along the cutter drive guide rail 345, and thus moving the diaphragm cutter assembly 35.

[0043] Please continue to refer to this. Figure 9 As shown, the pressure roller drive assembly 37 includes a pressure roller drive cylinder 371, a pressure roller drive slider 372, and a pressure roller drive guide rail 373. The pressure roller drive guide rail 373 is fixed to the upper end face of the fixed plate 32, and the pressure roller drive slider 372 is fixed to the lower end face of the pressure roller mounting plate 33. The pressure roller drive slider 372 moves along the pressure roller drive guide rail 373, and the pressure roller drive cylinder 371 drives the pressure roller mounting plate 33 to move along the pressure roller drive guide rail 373, thereby driving the diaphragm pressure roller 36 to move.

[0044] Please continue to refer to this. Figure 1As shown, the tail adhesive applicator 4 includes a tail adhesive roller 41, a swing arm assembly 43, and a glue preparation assembly 42. The glue preparation assembly 42 feeds the tail adhesive onto the tail adhesive roller 41, and the swing arm assembly 43 drives the tail adhesive roller 41 to move, thus applying the tail adhesive onto the battery cell c of the winding needle body 61 located at the adhesive applicator station.

[0045] like Figure 11 As shown, the feeding mechanism 5 includes a substrate 51, a flipping component 52, an adhesive application component 53, a clamping component 54, and an adhesive application component 55. The flipping component 52, the adhesive application component 53, and the clamping component 54 are disposed on the substrate 51. The clamping component 54 feeds the battery cell c located on the needle winding mechanism 6. The adhesive application component 55 feeds the adhesive paper d to the adhesive application component 53. The flipping component 52 drives the substrate 51 to rotate, thereby changing the positions of the adhesive application component 53 and the clamping component 54. The adhesive application component 53 feeds the adhesive paper d to the needle winding mechanism 6, and the needle winding mechanism 6 adsorbs the adhesive paper d.

[0046] Please combine Figure 12 , Figure 13 and Figure 14As shown, the adhesive application assembly 53 includes an adhesive application structure 533, an adhesive preparation structure 534, an adhesive application movable plate 531, and an adhesive application cylinder 532. The adhesive preparation structure 534 is disposed on both sides of the adhesive application structure 534, which can press the two ends of the adhesive paper d onto the surface of the needle body 61, so that the body 61 adsorbs and presses the adhesive paper d tightly. The adhesive application structure 533 and the adhesive preparation structure 534 are disposed on the adhesive application movable plate 531. The adhesive application cylinder 532 drives the adhesive application movable plate 531 to move, pressing the adhesive paper d onto the needle body 61. The adhesive application structure 533 includes an adhesive application block cylinder 5332 and an adhesive application block 5331. The adhesive application block cylinder 5332 drives the adhesive application block 5331 to move. The glue preparation structure 534 includes a glue preparation base 5341, a glue preparation cylinder 5342, a glue preparation roller 5343, an auxiliary glue preparation roller 5344, a glue preparation movable seat 5345, guide rods 5346, a spring (not shown in the figure), a glue preparation guide rail 5347, a glue preparation slider 5348, an anti-rotation cylinder 5349, and a limit ring 53410. The glue preparation guide rail 5347 is mounted on the glue application movable plate 531. The glue preparation roller 5343 and the auxiliary glue preparation roller 5344 are rotatably mounted on two glue preparation movable seats 5345 respectively. One end of each of the two guide rods 5346 is mounted on one glue preparation movable seat 5345, and the guide rods 5346 are mounted on one of the glue preparation movable seats 5345. 46 is inserted into the glue preparation base 5341. A limiting ring 53410 is set at the other end of the guide rod 5346 to limit the movement distance of the guide rod 5346. The guide rod 5346 passes through the spring. One end of the spring abuts against the glue preparation movable seat 5345, and the other end abuts against the glue preparation base 5341. The glue preparation base 5341 and the glue preparation slider 5348 are fixed. The glue preparation slider 5348 moves along the glue preparation guide rail 5347. The glue preparation cylinder 5342 drives the glue preparation base 5341 to move along the glue preparation guide rail 5347. The anti-rotation cylinder 53410 abuts against the glue preparation roller 5343 to prevent the glue preparation roller 5343 from rotating. When the adhesive tape d needs to be fed to the needle winding mechanism 6, the flipping component 52 drives the rotating base plate 51 to align the adhesive application component 53 with the needle winding body 61. The adhesive application cylinder 532 drives the adhesive application movable plate 531 to move, moving the adhesive tape d to a position tangent to the needle winding body 61. The adhesive application block cylinder 5332 drives the adhesive application block 5331 to move, pressing the adhesive tape d onto the surface of the needle winding body 61. The needle winding body 61 absorbs the adhesive tape d. The glue preparation cylinder 5342 drives the glue preparation base 5341 along the glue preparation... The adhesive guide rail 5347 moves, and the adhesive preparation roller 5343 and the auxiliary adhesive preparation roller 5344 contact the winding needle body 61 and compress the spring, so that the adhesive preparation roller 5343 and the auxiliary adhesive preparation roller 5344 press the two ends of the adhesive paper d to the surface of the winding needle body 61 to prevent the winding needle body 61 from not adhering the adhesive paper d tightly. Then the adhesive application cylinder 532, the adhesive block application cylinder 5332 and the adhesive preparation cylinder 5342 reset. At this time, the winding needle body 61 rotates, so that the adhesive paper d adheres to the first roll a and begins to wind.

[0047] Please continue to refer to this. Figure 12As shown, the clamping assembly 54 includes a clamping plate 541, a clamping cylinder 543, a clamping motor 542, and two grippers 544. The clamping cylinder 543 is fixed on the base plate 51, and the clamping motor 542 is fixed on the clamping plate 541. The clamping cylinder 543 drives the clamping plate 541 to move relative to the base plate 51, and the clamping motor 542 drives the two grippers 541 to move closer or further apart. When it is necessary to unload the battery cell c from the needle winding body 61, the flipping assembly 52 drives the base plate 51 to rotate, so that the gap between the two grippers 541 aligns with the battery cell c. The clamping cylinder 543 drives the clamping plate 541 to move, so that the battery cell is located between the two grippers 541. The clamping motor 542 drives the two grippers 541 to move closer to each other to clamp the battery cell c, so that the battery cell c is detached from the needle winding body 61 and the battery cell c is unloaded.

[0048] Please refer to Figure 15As shown, the gluing assembly 55 includes a gluing unit 551, a first moving structure 552, a second moving structure 553, and a third moving structure 554. Two gluing units 551 are provided; one gluing unit 551 is located on one side of the third moving structure 554, and the other gluing unit 551 is connected to the third moving structure 554. One gluing unit 551 and the third moving structure 554 are connected to the second moving structure 553, and the second moving structure 553 is connected to the first moving structure 552. The first moving structure 552 drives the second moving structure 553 to move, so that the adhesive paper d on the gluing unit 551 can adhere to the adhesive surface. The adhesive applicator 53, driven by the second moving structure 553, moves the third moving structure 554 and one of its adhesive application units 551. This allows the adhesive paper d on the two adhesive application units 551 to be fed to the adhesive applicator 53, enabling the adhesive applicator 53 to feed the adhesive paper to both sides of the winding needle body 61 to adhere the two ends of the diaphragm. The third moving structure 554 drives another adhesive application unit 551 to move, changing the distance between the two adhesive application units 551. This allows the adhesive applicator 55 to adjust the distance between the two adhesive papers according to the width of the diaphragm, making the adhesive applicator 53 and adhesive application unit 55 adaptable to diaphragms of different widths, thus having a wide range of applications. The gluing unit 551 includes a gluing substrate 5511 and a glue dispensing tray 5512, an anti-sticking roller 5513, a glue pressing structure 5514, a glue pulling roller 5515, a glue pulling guide rail 5516, a cutting structure 55110, a first gluing suction cup 5517, a second gluing suction cup 5518, and a third gluing suction cup 5519 disposed on the gluing substrate 5511. The anti-sticking roller 5513 is aligned with the glue pressing structure 5514 and pulls the glue. Roller 5515 moves along adhesive-applying guide rail 5516. Cutting structure 55110 is positioned between first adhesive-applying suction cup 5517 and second adhesive-applying suction cup 5518. Adhesive-applying tray 5512 unwinds the adhesive paper d, passing it between anti-sticking roller 5513 and pressing structure 5514, with the adhesive end face of adhesive paper d adhering to anti-sticking roller 5513. The paper is then unwound between adhesive-applying roller 5515 and first adhesive-applying suction cup 5517. The end is adhered to the glue-pulling roller 5515. The first glue-applying suction cup 5517 adsorbs the adhesive paper d. When the adhesive paper d needs to be loaded, the glue-pulling roller 5515 moves along the glue-pulling guide rail 5516, pulling the adhesive paper d through the second glue-applying plate 5518 to the third glue-applying plate 5519. The second glue-applying suction cup 5518 and the third glue-applying suction cup 5519 adsorb the adhesive paper d. The cutting structure 55110 is driven to cut the adhesive paper d between the first glue-applying suction cup 5517 and the second glue-applying suction cup 5518. The first moving structure 552 drives the second moving structure 553 to move, so that the adhesive paper d located on the glue-applying unit 551 can be aligned with the adhesive application component 53. The second moving structure 553 drives the third moving structure 554 and one of its glue-applying units 551 to move, which can drive the adhesive paper d on the two glue-applying units 551 to be loaded onto the adhesive application component 53.The pressing structure 5514 can press the adhesive tape d onto the anti-sticking roller 5513, so that the adhesive tape strip remains taut.

[0049] Before use, the above-mentioned cell winding equipment moves the glue-pulling roller 5515 along the glue-pulling guide rail 5516, pulling the adhesive paper d through the second glue-applying plate 5518 to the third glue-applying plate 5519. The second glue-applying suction cup 5518 and the third glue-applying suction cup 5519 adsorb the adhesive paper d. The cutting structure 55110 is driven to cut the adhesive paper d between the first glue-applying suction cup 5517 and the second glue-applying suction cup 5518, so that the adhesive paper d is adsorbed and fixed between the second glue-applying suction cup 5518 and the third glue-applying suction cup 5519, ready to be fed onto the adhesive application assembly 53.

[0050] The first moving structure 552 drives the second moving structure 553 to move, so that the adhesive paper d on the gluing unit 551 can be aligned with the adhesive block 5331. The second moving structure 553 drives the third moving structure 554 and one of its gluing units 551 to move, so that the adhesive paper d on the two gluing units 551 moves closer to the adhesive block 5331. The adhesive block cylinder 5332 drives the adhesive block 5331 to move. The anti-rotation cylinder 53410 drives it to abut against the preparation roller 5343 to prevent the preparation roller 5343 from rotating, so that the adhesive paper d sticks to the adhesive block 5331 and the preparation roller 5343, completing one feeding of the adhesive paper d.

[0051] The linear motion module 622 drives the locking nozzle 621 to approach the locking block 61321. The locking block 61321 contacts the inclined guide groove. The linear motion module 622 continues to drive, and the locking block 61321 moves along the inclined guide groove through the inclined surface 61322, thereby causing the two winding needle structures 613 to move away from each other. The spring 614 is compressed, increasing the winding needle misalignment gap 614, thereby expanding the diameter of the entire winding needle body 61. The flipping component 52 drives the rotating base plate 51 to align the adhesive application component 53 with the winding needle body 61. The adhesive application cylinder 532 drives the adhesive application movable plate 531 to move, moving the adhesive paper d to a position tangent to the winding needle body 61. The adhesive application block cylinder 5332 drives the adhesive application block 5331 to move, pressing the adhesive paper d onto the surface of the winding needle body 61. 61. Adhesive paper d is adsorbed. The adhesive preparation cylinder 5342 drives the adhesive preparation base 5341 to move along the adhesive preparation guide rail 5347. The adhesive preparation roller 5343 and the auxiliary adhesive preparation roller 5344 contact the winding needle body 61 and compress the spring, so that the adhesive preparation roller 5343 and the auxiliary adhesive preparation roller 5344 press the two ends of the adhesive paper d to the surface of the winding needle body 61. The adsorption hole 61332 adsorbs the adhesive paper d to prevent the winding needle body 61 from not adsorbing the adhesive paper d tightly. Then the adhesive application cylinder 532, the adhesive block application cylinder 5332 and the adhesive preparation cylinder 5342 are reset. At this time, the winding needle mechanism 6 rotates 60°, so that the winding needle body 61 with the adhesive tape d moves to the winding station. At the same time, the adhesive application assembly 55 continues to prepare the adhesive tape d, so that the adhesive tape d can be fed to the adhesive application assembly 53 next time to complete the sequential adhesive application.

[0052] In use, the first material winding mechanism 1 conveys the first material roll a to the winding needle mechanism 6, and the second material winding mechanism 2 conveys the second material roll b to the winding needle mechanism 6. The end of the first material roll a is adhered to the adhesive paper d on the winding needle body 61 located at the winding station. The second material roll b is wound up by the friction between it and the first material roll a, forming the battery cell c.

[0053] When the diaphragm cutter mechanism 3 cuts the first roll a, the cutter drive motor 341 drives the cutter drive screw 342 to rotate, which in turn moves the cutter drive connecting block 343, thereby moving the cutter drive slider 344 along the cutter drive guide rail 345. This causes the cutter mounting plate 31 to move relative to the fixed plate 32, which in turn moves the diaphragm cutter assembly 35 until the surface of the cutter mounting roller 351 contacts the first roll a. The pressure roller drive slider 372 moves along the pressure roller drive guide rail 373, and the pressure roller drive cylinder 371 drives... The pressure roller mounting plate 33 moves along the pressure roller drive guide rail 373, thereby driving the diaphragm pressure roller 36 to move, so that the diaphragm pressure roller 36 presses the first roll a. At this time, the winding needle body 61 continues to rotate, driving the cutter mounting roller 351 and the diaphragm pressure roller 36 to rotate to a certain angle. Then, the cutter 3517 contacts the first roll a and cuts it at the point where only two layers of diaphragm are laminated on the first roll a. The cutter drive motor 341 drives the diaphragm cutter assembly 35 to reset. The residual roll drive assembly 38 drives the residual roll pressure roller 39 to press it onto the battery cell c. Driven by a rotary motor 352, the synchronous belt 353 drives the synchronous pulleys 34 and 354 to rotate, which in turn drives the cutter mounting roller 351 to rotate, causing the cutter 3517 to rotate to a set angle. This ensures that in the next cut, after the cutter mounting roller 351 rotates to the same angle, the cutter 3517 can contact the first roll a. The needle body 61 continues to rotate, and the needle mechanism 6 rotates 60°, transferring the cut battery cell c to the adhesive application station. Another needle body 61 is transferred to the winding station, and the adhesive preparation assembly 42 feeds the tail adhesive to the receiving station. On the tail roller 41, the swing arm assembly 43 drives the tail roller 41 to move, and applies the tail glue to the battery cell c of the winding needle body 61 located at the glue application station. The residual roll drive assembly 38 drives the residual roll pressure roller 39 to reset. The diaphragm pressure roller 36 presses the end of the cut first roll a onto another winding needle body 61. When the other winding needle body 61 successfully winds the end of the cut first roll a, the pressure roller drive cylinder 371 drives the pressure roller mounting plate 33 to move along the pressure roller drive guide rail 373, thereby resetting the diaphragm pressure roller 36.

[0054] After the tail adhesive is applied, the needle winding mechanism 6 rotates 60°, moving the battery cell c with the applied tail adhesive to the unloading station. The linear motion module 622 drives the locking nozzle 621 away from the locking block 61321. The two needle winding structures 613 move closer to each other under the force of the spring 614, reducing the needle misalignment gap 614, thereby reducing the diameter of the entire needle winding body 61. The flipping component 52 drives the rotating base plate 51, aligning the clamping component 54 with the battery cell, the adhesive application component 53 with the glue application component 55, and aligning the gap between the two grippers 541 with the battery cell. The clamping cylinder 543 is then driven... The clamping plate 541 moves, positioning the battery cell between the two grippers 541. The clamping motor 542 drives the two grippers 541 to move closer together, clamping the battery cell c and causing it to detach from the winding needle body 61, thus unloading the battery cell c. Simultaneously, the first moving structure 552 drives the second moving structure 553 to move, aligning the adhesive tape d on the gluing unit 551 with the adhesive block 5331. The second moving structure 553 then drives the third moving structure 554 and one of its gluing units 551 to move, bringing the adhesive tape d on both gluing units 551 closer to the adhesive block 5331. The adhesive block cylinder 5332 drives the adhesive block 5331 to move, and the anti-rotation cylinder 53410 drives it to abut against the glue preparation roller 5343 to prevent the glue preparation roller 5343 from rotating, so that the adhesive paper d adheres to the adhesive block 5331 and the glue preparation roller 5343, completing the first feeding of the adhesive paper d; after the battery cell c is fed, the flipping component 52 drives the rotating base plate 51 to align the adhesive application component 53 with the winding needle body 61, the adhesive application cylinder 532 drives the adhesive application movable plate 531 to move, moving the adhesive paper d to a position tangent to the winding needle body 61, and the adhesive block cylinder 5332 drives the adhesive block 5331 to move. The adhesive paper d is pressed onto the surface of the winding needle body 61. The winding needle body 61 adsorbs the adhesive paper d. The glue preparation cylinder 5342 drives the glue preparation base 5341 to move along the glue preparation guide rail 5347. The glue preparation roller 5343 and the auxiliary glue preparation roller 5344 contact the winding needle body 61 and compress the spring, so that the glue preparation roller 5343 and the auxiliary glue preparation roller 5344 press the two ends of the adhesive paper d onto the surface of the winding needle body 61 to prevent the winding needle body 61 from not adsorbing the adhesive paper d tightly. Then the glue application cylinder 532, the glue application block cylinder 5332 and the glue preparation cylinder 5342 reset to complete one winding.

[0055] 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 battery cell winding device, characterized in that, The device includes a first material winding mechanism, a second material winding mechanism, a diaphragm cutter mechanism, a tail adhesive applicator mechanism, a feeding mechanism, and a winding needle mechanism. The first material winding mechanism corrects the deviation of the first material roll and then transmits it to the winding needle mechanism. The second material winding mechanism corrects the deviation of the second material roll and then transmits it to the winding needle mechanism. The winding needle mechanism winds the first and second material rolls to form a battery cell. The diaphragm cutter mechanism cuts the first material roll. The winding needle mechanism rotates until the battery cell is aligned with the tail adhesive applicator mechanism. The tail adhesive applicator applies tail adhesive to the battery cell. The winding needle mechanism rotates until the battery cell is aligned with the feeding mechanism. The feeding mechanism feeds the battery cell and applies adhesive paper to the winding needle mechanism. The winding needle mechanism absorbs the adhesive paper. The cut end of the first material roll is adhered to the adhesive paper. The first material roll is directly wound on the winding needle mechanism. The needle winding mechanism includes three needle winding bodies and three locking components. The needle winding bodies are aligned with the locking components. Each needle winding body includes a mounting base, a rotating shaft, a spring, and two needle winding structures. The rotating shaft is disposed on the mounting base, and the two needle winding structures are connected through the rotating shaft. The spring is disposed between the mounting base and the needle winding structure, and the locking components are locked to the ends of the needle winding structures. The coiled needle structure includes a coiled needle mounting base, an inner needle sleeve, and an outer coiled needle. One end of the inner needle sleeve is fixed to the coiled needle mounting base, and the outer coiled needle is disposed on the outer surface of the inner needle sleeve. The inner needle sleeve is provided with a locking block, which is located at one end of the inner needle sleeve. The locking block is provided with an inclined surface that is radially outward along the inner needle sleeve. The locking assembly includes a linear motion module and a locking nozzle. The linear motion module drives the locking nozzle to move. The locking nozzle is provided with an inclined guide groove, and the locking block moves along the inclined guide groove.

2. The cell winding equipment according to claim 1, characterized in that, The first material winding mechanism includes a fixed bracket, a movable bracket, a CCD camera, an encoder roller, an encoder pressure roller, a correction roller, a correction pressure roller, and a drive assembly. The CCD camera, the encoder roller, the encoder pressure roller, the correction roller, and the correction pressure roller are mounted on the movable bracket. The CCD camera is aligned with the encoder roller. The drive assembly is mounted on the fixed bracket and drives the movable bracket to move. The composite sheet passes sequentially between the encoder roller and the encoder pressure roller, and between the correction roller and the correction pressure roller, before being wound onto a winding needle to form a battery cell.

3. The battery cell winding equipment according to claim 2, characterized in that, The diaphragm cutter mechanism includes a cutter mounting plate, a fixed plate, a diaphragm cutter assembly, a diaphragm pressure roller, a cutter drive assembly, a pressure roller mounting plate, and a pressure roller drive assembly. The diaphragm cutter assembly is mounted on the cutter mounting plate, the diaphragm pressure roller is rotatably mounted on the pressure roller mounting plate, the pressure roller drive assembly drives the pressure roller mounting plate to move relative to the fixed plate, and the cutter drive assembly drives the cutter mounting plate to move relative to the fixed plate.

4. The battery cell winding equipment according to claim 2 or 3, characterized in that, The feeding mechanism includes a substrate and a flipping component, an adhesive application component, and a clamping component disposed on the substrate. The clamping component feeds the already wound battery cell, the flipping component rotates the substrate, and the adhesive application component applies adhesive tape to the winding needle.

5. The cell winding equipment according to claim 4, characterized in that, The adhesive application assembly includes an adhesive application structure, an adhesive preparation structure, an adhesive application movable plate, and an adhesive application cylinder. The adhesive preparation structure is disposed on both sides of the adhesive application structure. The adhesive application structure and the adhesive preparation structure are disposed on the adhesive application movable plate. The adhesive application cylinder drives the adhesive application movable plate to move.

6. The cell winding equipment according to claim 5, characterized in that, The adhesive application structure includes an adhesive application block cylinder and an adhesive application block, and the adhesive application block cylinder drives the adhesive application block to move.

7. The cell winding equipment according to claim 6, characterized in that, The glue preparation structure includes a glue preparation base, a glue preparation movable seat, a glue preparation roller, an auxiliary glue preparation roller, a glue preparation cylinder, and a glue preparation guide rail. The glue preparation guide rail is disposed on the glue application movable plate. The glue preparation roller and the auxiliary glue preparation roller are rotatably disposed on the glue preparation movable seat. The glue preparation base is connected to the glue preparation movable seat. The glue preparation cylinder drives the glue preparation base to move along the glue preparation guide rail.

8. The cell winding equipment according to claim 7, characterized in that, The clamping assembly includes a clamping plate, a clamping cylinder, a clamping motor, and two grippers. The clamping cylinder is disposed on the substrate, and the clamping motor is disposed on the clamping plate. The clamping cylinder drives the clamping plate to move relative to the substrate, and the clamping motor drives the two grippers to move closer to or further away from each other.

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