Diaphragm tail roll mechanism and battery cell lamination machine

Abstract

The utility model relates to a diaphragm tail winding mechanism and a battery core laminating machine, the diaphragm tail winding mechanism comprises a blanking manipulator, a diaphragm tail clamping device and a tail winding device, the blanking manipulator reciprocates among a laminating table, a diaphragm cutting position and a tail winding position, and the diaphragm tail clamping device and the tail winding device are respectively arranged at the diaphragm cutting position and the tail winding position; the discharging manipulator clamps the battery cells and the diaphragms on the stacking table to move to a tail rolling position, and pulls the diaphragms to penetrate through the diaphragm tail clamping device; at the diaphragm cutting position, the diaphragm tail clamping device clamps the diaphragm and cuts off the diaphragm between the tail clamping position and the stacking table; and at the tail winding position, the battery cell on the discharging manipulator is transferred to the tail winding device, and the tail winding device clamps the battery cell and drives the battery cell to rotate, so that the diaphragm between the diaphragm cutting position and the tail winding position is wound on the battery cell. According to the utility model, the diaphragm is clamped and cut off through the diaphragm tail clamping device, and the diaphragm tail clamping device can clamp the diaphragm all the time until a tail roll is finished, so that the diaphragm can be uniformly wrapped on a battery cell, the diaphragm wrinkling condition is reduced, and the yield of the battery cell is improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to lithium battery technical field especially relates to a diaphragm tail roll mechanism and electric core lamination machine. BACKGROUND

[0002] In the lithium battery lamination production process, the positive plate, negative plate is stacked in Z type on both sides of the diaphragm to form the electric core, then the diaphragm is cut off to finish, and the diaphragm finishing is to wind the tail section diaphragm on the surface of the electric core one and a half or three circles to ensure that the diaphragm completely covers the gap between the positive and negative plates, prevents the positive and negative plates from directly contacting, or the problem of the plate burr piercing the diaphragm to cause short circuit, improves the safety performance of the electric core, and simultaneously, the diaphragm winding on the surface of the electric core helps to tightly package the positive and negative plates and the diaphragm in the electric core together to form a complete electric core structure, and protects the electric core from the influence of the external environment.

[0003] In the existing diaphragm finishing scheme, the tail roll needle height is kept unchanged, the diaphragm tail clamp structure is moved up and down by clamping the diaphragm, which makes the up and down swinging diaphragm easily fall off from the diaphragm tail clamp structure, or makes the diaphragm wrinkle, thereby affecting the yield of the electric core, and in addition, the existing diaphragm finishing scheme mostly adopts the pressure wheel structure, the diaphragm is pressed on the electric core through the pressure wheel structure, the pressure wheel structure is arranged between the diaphragm tail clamp structure and the electric core, so that the last section of the diaphragm separated from the diaphragm tail clamp structure has no tension, thereby the pressure wheel structure cannot guarantee that the last section of the diaphragm can be stably and tightly wrapped on the electric core, and the safety performance of the electric core cannot be guaranteed. SUMMARY

[0004] In order to solve the problems in the prior art, the utility model provides a diaphragm tail roll mechanism and an electric core lamination machine.

[0005] In the first aspect, the utility model provides a diaphragm tail roll mechanism, including the blanking manipulator, diaphragm tail clamp device and tail roll device, the blanking manipulator reciprocates between the lamination table, the film cutting position and the tail roll position, and the diaphragm tail clamp device and the tail roll device are arranged at the film cutting position and the tail roll position respectively; the blanking manipulator clamps and moves the electric core and the diaphragm on the lamination table to the tail roll position, and pulls the diaphragm through the diaphragm tail clamp device; at the film cutting position, the diaphragm tail clamp device clamps the diaphragm, and cuts off the diaphragm between the tail clamp position and the lamination table; at the tail roll position, the electric core on the blanking manipulator is transferred to the tail roll device, the tail roll device clamps the electric core, and drives the electric core to rotate, so as to wind the diaphragm between the film cutting position and the tail roll position on the electric core.

[0006] In some embodiments, the blanking manipulator and the diaphragm tail clamp device are arranged on the same linear module, the linear module is a double-motor double-sliding-table linear module, and the blanking manipulator and the diaphragm tail clamp device are arranged on the two sliding tables of the linear module respectively.

[0007] In some embodiments, the blanking manipulator comprises a blanking moving base, a blanking rotating motor, a blanking rotating base and a material clamp connected in sequence, the blanking moving base is connected with a slide table in the linear module, the blanking rotating motor is arranged on the blanking moving base, the blanking rotating base is drivingly connected with a driving end of the blanking rotating motor, the material clamp is arranged on one side of the blanking rotating base, and the blanking rotating motor drives the blanking rotating base and the material clamp to rotate on a horizontal plane.

[0008] In some embodiments, the diaphragm tail clamp device comprises a tail clamp moving base, a fixed clamp plate, a movable clamp plate and a diaphragm cutting assembly, the tail clamp moving base is connected with a slide table in the linear module, an installation frame is arranged below the tail clamp moving base, the fixed clamp plate is arranged at a lower end of the installation frame, the movable clamp plate is movably arranged on the installation frame and located directly above the fixed clamp plate, a clamping opening for clamping the diaphragm is formed between the movable clamp plate and the fixed clamp plate, the installation frame is provided with a first lifting cylinder connected with the movable clamp plate and a first guide rail, the first lifting cylinder drives the movable clamp plate to move up and down along the first guide rail to clamp the diaphragm, and the diaphragm cutting assembly is movably arranged on one side of the installation frame close to the stacking table, and a cutter of the diaphragm cutting assembly performs hot cutting work on the diaphragm clamped by the movable clamp plate and the fixed clamp plate through heat.

[0009] In some embodiments, the diaphragm cutting assembly comprises a lifting plate, a guide rod, a cutter seat, a first pressing plate, a second pressing plate and a cutter, the lifting plate is movably arranged on the installation frame by a second lifting cylinder, the guide rod is arranged through the lifting plate and in sliding contact with the lifting plate, a lower end of the guide rod is fixed with the cutter seat, the first pressing plate and the second pressing plate are fixed in parallel at a lower end of the cutter seat, the cutter is fixed between the first pressing plate and the second pressing plate and exposes a cutting edge in the direction of the fixed clamp plate, the lifting plate is provided with a third lifting cylinder, a driving end of the third lifting cylinder is connected with the cutter seat, and the third lifting cylinder drives the cutter seat and the cutter to move along the guide rod.

[0010] In some embodiments, the first pressing plate and the second pressing plate are electrically insulating plates, and both ends of the cutter are connected with conductive blocks, and the conductive blocks are fixed with the first pressing plate.

[0011] In some embodiments, the tail winding device comprises winding needles, jaw cylinders, a rotary drive assembly, a lifting module and a translation module, two pairs of winding needles are arranged on both sides of the tail winding position in the width direction of the diaphragm, each pair of winding needles is arranged on two clamping blocks of the driving end of the jaw cylinder, the two pairs of winding needles are clamped or released from the battery cell through the respective jaw cylinders, the jaw cylinders are arranged on the lifting seat of the lifting module through the rotary drive assembly, the rotary drive assembly drives the rotation of the winding needles and the clamped battery cell to wind the diaphragm on the battery cell, and each pair of winding needles moves in the vertical direction and the horizontal direction through the lifting module and the translation module respectively.

[0012] In some embodiments, the rotary drive assembly comprises a rotary shaft and a winding motor, the rotary shaft is movably arranged on the lifting seat through a bearing, the winding motor is fixed on the lifting seat, the rotary shaft is sleeved with a driving wheel, the driving wheel is in transmission connection with the winding motor, one end of the rotary shaft is fixed with the jaw cylinder, the other end of the rotary shaft is provided with an electrical slip ring for supplying power and air to the jaw cylinder, and the rotary shaft is internally provided with an air path and a wire slot.

[0013] In some embodiments, the lifting seat is provided with an electrostatic eliminator below the winding needle through a support, and the electrostatic eliminator is arranged in the width direction of the diaphragm.

[0014] In the second aspect, the utility model also provides a battery cell lamination machine, including diaphragm tail mechanism, the diaphragm tail mechanism is the diaphragm tail winding mechanism of first aspect.

[0015] Compared with the prior art, the utility model has the beneficial effects that: the movement of the battery cell from the stacking table to the tail winding position is completed by the blanking mechanical arm, and the diaphragm is simultaneously elongated to the required length at the tail winding time, the diaphragm is clamped and cut by the diaphragm tail clamping device, the diaphragm cutting force is more uniform by using the heating sheet as a cutter, and the diaphragm cutting size is more uniform; the diaphragm tail clamping device can move to the position of the side end face of the battery cell in the rear section of the diaphragm tail winding, so that the diaphragm tail clamping device can clamp the diaphragm all the time until the tail winding is completed, the diaphragm can be uniformly wrapped on the battery cell, the stability and tightness of the diaphragm wrapped battery cell are improved, the occurrence of diaphragm wrinkling is reduced, and the yield of the battery cell is improved; the height of the diaphragm tail clamping device and the clamped diaphragm does not change when the tail winding device controls the height of the diaphragm, the stability of the diaphragm tail clamping device and the clamped diaphragm during movement is ensured, and the occurrence of diaphragm wrinkling is further avoided. BRIEF DESCRIPTION OF DRAWINGS

[0016] Figure 1 It is a three-dimensional structure schematic diagram of the diaphragm tail winding mechanism of the embodiment of the application.

[0017] Figure 2 is a perspective view of a blanking manipulator according to an embodiment of the present application.

[0018] Figure 3 is a perspective view of a diaphragm tail clamp device according to an embodiment of the present application.

[0019] Figure 4 is a perspective view of a partial diaphragm cutting assembly according to an embodiment of the present application.

[0020] Figure 5 is an exploded view of a partial diaphragm cutting assembly according to an embodiment of the present application.

[0021] Figure 6 is a perspective view of a tail winding device according to an embodiment of the present application.

[0022] Figure 7 is a perspective view of a winding needle, a clamping jaw air cylinder and a rotary drive assembly according to an embodiment of the present application.

[0023] Figure 8 is a cross-sectional view of a winding needle, a clamping jaw air cylinder and a rotary drive assembly according to an embodiment of the present application.

[0024] Figure 9 is a planar state diagram of an electric core and a diaphragm during diaphragm tail winding according to an embodiment of the present application.

[0025] Reference signs: 101, stacking table; 102, diaphragm cutting position; 103, tail winding position; 104, waiting position; 105, electric core; 106, diaphragm;

[0026] 1, blanking manipulator; 11, blanking moving seat; 12, blanking rotary motor; 13, blanking rotary seat; 14, material clamp; 15, clamping drive module;

[0027] 2, diaphragm tail clamp device; 21, tail clamp moving seat; 22, fixed clamp plate; 23, movable clamp plate; 24, diaphragm cutting assembly; 241, lifting plate; 242, guide rod; 243, cutter seat; 244, first pressing plate; 245, second pressing plate; 246, cutter; 247, conductive block; 248, second lifting air cylinder; 249, third lifting air cylinder; 25, mounting frame; 26, clamping opening; 27, first lifting air cylinder; 28, first guide rail;

[0028] 3, tail winding device; 31, winding needle; 32, clamping jaw air cylinder; 33, rotary drive assembly; 331, winding motor; 332, bearing; 333, drive wheel; 334, electrical slip ring; 335, rotary shaft; 336, air path; 337, wire slot; 338, power supply circuit; 34, lifting module; 35, translation module; 36, clamping block; 37, lifting seat; 38, translation seat;

[0029] 4, electrostatic bar; 41, support;

[0030] 5, linear module; 51, slide. DETAILED DESCRIPTION

[0031] The specific embodiments of the present application will be described with reference to the accompanying drawings.

[0032] Reference Figure 1 , the figure is a schematic diagram of the diaphragm tail roll mechanism, the horizontal is the linear module 5, the blanking manipulator 1 and the diaphragm tail clamp device 2 are connected with the two slide tables 51 of the linear module 5 respectively, the two motors of the linear module 5 control the movement of the two slide tables 51, so as to control the movement of the diaphragm tail clamp device 2 and the blanking manipulator 1 respectively, the tail roll device 3 is arranged below the linear module 5, the blanking manipulator 1 clamps the battery cell 105 at the stacking table 101, and the battery cell 105 and the diaphragm 106 are transported to the tail roll device 3 together, then the tail roll device 3 clamps the battery cell 105, the diaphragm tail clamp device 2 clamps the diaphragm 106 and cuts off, the tail roll device 3 drives the battery cell 105 to rotate, and the diaphragm 106 is wound on the battery cell 105.

[0033] Reference Figures 1 to 9 A diaphragm tail roll mechanism, comprising a blanking manipulator 1, a diaphragm tail clamp device 2 and a tail roll device 3, the blanking manipulator 1 reciprocates between the stacking table 101, the film cutting position 102 and the tail roll position 103, the diaphragm tail clamp device 2 and the tail roll device 3 are arranged at the film cutting position 102 and the tail roll position 103 respectively; the blanking manipulator 1 clamps the battery cell 105 and the diaphragm 106 on the stacking table 101 and moves to the tail roll position 103, and pulls the diaphragm 106 through the diaphragm tail clamp device 2; at the film cutting position 102, the diaphragm tail clamp device 2 clamps the diaphragm 106, and cuts off the diaphragm 106 between the tail clamp position and the stacking table 101; at the tail roll position 103, the battery cell 105 on the blanking manipulator 1 is transferred to the tail roll device 3, the tail roll device 3 clamps the battery cell 105, and drives the battery cell 105 to rotate, so as to wind the diaphragm 106 between the film cutting position 102 and the tail roll position 103 on the battery cell 105.

[0034] The diaphragm tail-winding mechanism of this application uses a feeding robot 1 to move the battery cell 105 from the stacking platform 101 to the tail-winding position 103, and simultaneously stretches the diaphragm 106 to the required length for tail-winding. The diaphragm 106 is then clamped and cut by the diaphragm tail-clamping device 2. The use of an electric heating element as a cutter 246 ensures more uniform force distribution during diaphragm 106 cutting, resulting in more uniform cut dimensions. The diaphragm tail-clamping device 2 can move to the position of the battery cell 105 side end face at the rear of the tail-winding of the diaphragm 106, allowing the diaphragm tail-clamping device 2 to continuously clamp the diaphragm. 106 until the end of the roll, so that the separator 106 can be evenly wrapped around the battery cell 105, improving the stability and tightness of the separator 106 wrapping the battery cell 105, reducing the occurrence of wrinkles in the separator 106, and improving the yield of the battery cell 105; the end-winding device 3 controls the height of the separator 106 when the battery cell 105 is rolled at the end, so that the height of the separator end clamping device 2 and the clamped separator 106 does not change, ensuring the stability of the separator end clamping device 2 and the clamped separator 106 during movement, and further avoiding the occurrence of wrinkles in the separator 106.

[0035] To facilitate control of the movement of the unloading robot 1 and the diaphragm tail clamp device 2, in this embodiment, reference is made to... Figure 1 The unloading robot 1 and the diaphragm tail clamp device 2 are set on the same linear module 5. The linear module 5 is a dual-motor, dual-slide table linear module 5. The unloading robot 1 and the diaphragm tail clamp device 2 are respectively set on the two slide tables 51 of the linear module 5.

[0036] Understandably, with this setup, the motors at both ends of the linear module 5 control the movement of the two slides 51 respectively. The two slides 51 can move synchronously or asynchronously. When it is necessary to drive the unloading robot 1 to pick up the battery cell 105 on the stack 101, the unloading robot 1 moves quickly from the waiting position 104 to the stack 101. At the same time, the diaphragm tail clamp device 2 will also move synchronously to the stack 101. When the unloading robot 1 transfers the battery cell 105 from the stack 101 to the tail roll position 103, the diaphragm 106 tail roll device 3 is still at the stack 101. After the unloading robot 1 transfers the battery cell 105 to the tail roll device 3 and returns to the waiting position 104, the diaphragm tail clamp device 2 will gradually move from the stack 101 to the tail roll position 103 following the progress of the tail roll.

[0037] In order to achieve the transfer of battery cell 105, in this embodiment, reference is made to... Figure 2 The unloading robot 1 includes an unloading moving seat 11, an unloading rotary motor 12, an unloading rotary seat 13, and a clamp 14 connected in sequence. The unloading moving seat 11 is connected to a slide 51 in the linear module 5. The unloading rotary motor 12 is mounted on the unloading moving seat 11. The unloading rotary seat 13 is connected to the drive end of the unloading rotary motor 12. The clamp 14 is mounted on one side of the unloading rotary seat 13. The unloading rotary motor 12 drives the unloading rotary seat 13 and the clamp 14 to rotate on the horizontal plane.

[0038] It can be understood that, in this way, by connecting the blanking moving seat 11 with the slide table 51 of the linear module 5, the linear module 5 is far away from the moving path of the battery cell 105, and the high blanking moving seat 11 is used to ensure that the material clamp 14 can drive the battery cell 105 to move on the specified path. The blanking rotating motor 12 and the blanking rotating seat 13 drive the material clamp 14 to rotate, so that the battery cell 105 can be conveniently transferred to different stations. For example, after the battery cell 105 completes the tail winding work of the separator 106 by the tail winding device 3, the blanking manipulator 1 clamps the battery cell 105 and moves to the rubber bonding station. By rotating the material clamp 14, the rotation of the battery cell 105 on the horizontal plane can be realized, so that the rubber bonding of different positions of the battery cell 105 can be facilitated. The material clamping driving module 15 is arranged on the blanking rotating seat 13, and the material clamp 14 is controlled to act by the material clamping driving module 15.

[0039] In order to stably clamp the separator 106, in the embodiment, referring to Figures 3 to 5 , the separator tail clamping device 2 includes a tail clamping moving seat 21, a fixed clamping plate 22, a movable clamping plate 23 and a separator cutting assembly 24. The tail clamping moving seat 21 is connected with one of the slide tables 51 of the linear module 5. An installation frame 25 is arranged below the tail clamping moving seat 21. The fixed clamping plate 22 is arranged at the lower end of the installation frame 25. The movable clamping plate 23 is movably arranged on the installation frame 25 and located directly above the fixed clamping plate 22. The clamping opening 26 for clamping the separator 106 is formed between the movable clamping plate 23 and the fixed clamping plate 22. The installation frame 25 is provided with a first lifting cylinder 27 and a first guide rail 28 connected with the movable clamping plate 23. The first lifting cylinder 27 drives the movable clamping plate 23 to move up and down along the first guide rail 28 to clamp the separator 106. The separator cutting assembly 24 is movably arranged on the side of the installation frame 25 close to the stacking table 101. The cutter 246 of the separator cutting assembly 24 performs hot cutting work on the separator 106 clamped by the movable clamping plate 23 and the fixed clamping plate 22 through heat.

[0040] It needs to be further explained that, referring to Figure 9 , the height at which the fixed clamping plate 22 and the movable clamping plate 23 clamp the separator 106 is also the horizontal height of the separator 106. This height does not change when the battery cell 105 winds the separator 106. The battery cell 105 in the winding and rotating state is moved up and down by the lifting module 34 of the tail winding device 3, so as to ensure the stability of the separator 106 during the movement from the stacking table 101 to the tail winding position 103 by the separator tail clamping device 2, thereby avoiding the wrinkling of the separator 106 and improving the yield of the battery cell 105.

[0041] It can be understood that, thus arranged, the clamping plate 22 remains stationary, the gas holes of the external air source are arranged on the clamping plate 22, the diaphragm 106 is adsorbed by negative pressure, two first guide rails 28 are arranged at both ends of the movable clamping plate 23, and the two first lifting cylinders 27 at both ends of the movable clamping plate 23 drive the movable clamping plate 23 to move together, so that the force between the movable clamping plate 23 and the clamping plate 22 is uniform, effectively avoiding the situation that the diaphragm 106 is not clamped tightly due to uneven force, avoiding the situation that the diaphragm 106 is wrinkled, and improving the yield of the battery cell 105.

[0042] In order to stably cut the diaphragm 106, in the embodiment, referring to Figures 3 to 5 , the diaphragm cutting assembly 24 includes a lifting plate 241, a guide rod 242, a cutter seat 243, a first pressing plate 244, a second pressing plate 245, and a cutter 246. The lifting plate 241 is movably arranged on the mounting frame 25 by the second lifting cylinder 248, the guide rod 242 is arranged through the lifting plate 241 and in sliding contact with the lifting plate 241, the lower end of the guide rod 242 is fixed with the cutter seat 243, the first pressing plate 244 and the second pressing plate 245 are fixed in parallel at the lower end of the cutter seat 243, the cutter 246 is fixed between the first pressing plate 244 and the second pressing plate 245 and exposes a cutting edge in the direction of the clamping plate 22, and the lifting plate 241 is provided with a third lifting cylinder 249, the driving end of the third lifting cylinder 249 is connected with the cutter seat 243, and the third lifting cylinder 249 drives the cutter seat 243 and the cutter 246 to move along the guide rod 242.

[0043] It can be understood that, thus arranged, the cutter 246 is an electric heating sheet, the cutter 246 is heated by electrification, the heated cutter 246 quickly melts and cuts the diaphragm 106 by heat, the diaphragm 106 is cut more uniformly under more uniform force, the cutter 246 is fixed by clamping of the first pressing plate 244 and the second pressing plate 245, the lifting stroke of the cutter 246 is controlled in two sections, when cutting the diaphragm 106, the second lifting cylinder 248 controls the lifting plate 241 to descend synchronously with the movable clamping plate 23, when the movable clamping plate 23 clamps the diaphragm 106 on the clamping plate 22, the third lifting cylinder 249 drives the cutter seat 243 and the cutter 246 to descend, and the cutter 246 melts and cuts the diaphragm 106.

[0044] In order to ensure that the cutter 246 can stably heat, in the embodiment, referring to Figures 4 to 5 , the first pressing plate 244 and the second pressing plate 245 are electrically insulating plates, and the two ends of the cutter 246 are connected with conductive blocks 247, and the conductive blocks 247 are fixed with the first pressing plate 244.

[0045] It needs to be further explained that the first pressing plate 244 and the second pressing plate 245 press the main body of the cutter 246, only leaving two ends connected with the conductive block 247, facilitating power connection, and the cutter 246 is exposed by 2MM on the lower side of the first pressing plate 244 and the second pressing plate 245, facilitating the cutter 246 to cut the diaphragm 106.

[0046] It can be understood that, in this way, by the electrically insulating first pressing plate 244 and the second pressing plate 245, the current only flows through the conductive block 247 and the cutter 246, the conductive block 247 made of copper has high conductivity, the cutter 246 adopts an electric heating sheet with low conductivity, the electric heating sheet has better toughness than the electric heating wire, the fixing mode is simpler, the service life is longer, and the diaphragm 106 is cut more uniformly.

[0047] In order to clamp and rotate the battery cell 105, in the embodiment, referring to Figures 6 to 8 , the tail winding device 3 includes winding needles 31, clamping jaw cylinders 32, a rotating drive assembly 33, a lifting module 34 and a translation module 35, two pairs of winding needles 31 are arranged on both sides of the diaphragm 106 in the width direction of the tail winding position 103, each pair of winding needles 31 is arranged on two clamping blocks 36 of the driving end of the clamping jaw cylinder 32, the two pairs of winding needles 31 are respectively clamped or released by the respective clamping jaw cylinders 32, the clamping jaw cylinders 32 are arranged on the lifting seat 37 of the lifting module 34 through the rotating drive assembly 33, the rotating drive assembly 33 drives the winding needles 31 and the clamped battery cell 105 to rotate, so as to wind the diaphragm 106 on the battery cell 105, the lifting module 34 is arranged on the translation seat 38 of the translation module 35, and each pair of winding needles 31 moves in the vertical direction and the horizontal direction through the lifting module 34 and the translation module 35 respectively.

[0048] It can be understood that, in this way, the clamping jaw cylinders 32, the rotating drive assembly 33, the lifting module 34 and the translation module 35 are respectively used to drive the winding needles 31 to clamp the battery cell 105, drive the winding needles 31 and the battery cell 105 to rotate, drive the winding needles 31 and the battery cell 105 to lift, and drive the winding needles 31 to translate, when the unloading manipulator 1 transfers the battery cell 105 of the stacking table 101 to the tail winding position 103, the two pairs of winding needles 31 move from the outside to the battery cell 105 through the translation module 35, after being positioned, the clamping jaw cylinders 32 drive the winding needles 31 to clamp the battery cell 105, the unloading manipulator 1 releases the battery cell 105 and retreats to the waiting position 104, so that the battery cell 105 is transferred to the tail winding device 3, then the rotating drive assembly 33 drives the winding needles 31 and the battery cell 105 to rotate, so that the diaphragm 106 is wound on the battery cell 105, and at the same time of winding, the height of the winding needles 31 and the battery cell 105 is adjusted through the lifting module 34, so that the height of the diaphragm 106 between the diaphragm tail clamping device 2 and the tail winding device 3 is basically unchanged.

[0049] In order to stably drive the rotating needle 31 to rotate, in the embodiment, the rotating drive assembly 33 comprises a rotating shaft 335, a winding motor 331, the rotating shaft 335 is movably arranged on the lifting seat 37 through a bearing 332, the winding motor 331 is fixed on the lifting seat 37, the rotating shaft 335 is sleeved with a driving wheel 333, the driving wheel 333 is in transmission connection with the winding motor 331, one end of the rotating shaft 335 is fixed with the clamping jaw cylinder 32, the other end of the rotating shaft 335 is provided with an electrical slip ring 334 for supplying power and air to the clamping jaw cylinder 32, the rotating shaft 335 is internally provided with an air path 336 and a wire slot 337, the electrical slip ring 334 supplies air to the clamping jaw cylinder 32 through the air path 336, and the wire slot 337 is provided with a power supply line 338 electrically connected to the electrical slip ring 334 and the clamping jaw cylinder 32. Figures 7 to 8 It needs to be further explained that the tail winding operation of the diaphragm 106 usually needs to rotate the battery cell 105 by one and a half or three turns to ensure that the diaphragm 106 fully covers the battery cell 105, so the wire at the rotating needle 31 and the clamping jaw cylinder 32 needs to be ensured not to be wound on the tail winding device 3, so as to cause the stretching and fracture of the circuit line and the air path 336 line.

[0050] It can be understood that in this way, the rotating motor drives the rotating shaft 335 and the clamping jaw cylinder 32 to rotate, thereby driving the rotating needle 31 to rotate, the clamping jaw cylinder 32 for controlling the rotating needle 31 is connected to the air and electricity through the electrical slip ring 334, the electrical slip ring 334 and the hollow rotating shaft 335 cooperate, the air path 336 and the circuit of the clamping jaw cylinder 32 are built-in through the electrical slip ring 334, the air path 336 and the wire slot 337 in the rotating shaft 335, the clamping jaw cylinder 32 is supplied with air and electricity through the air path 336 and the wire slot 337 of the rotating shaft 335, so that the wire at the clamping jaw cylinder 32 is not wound due to rotation, and the wire is more beautiful.

[0051] In order to reduce the wrinkling of the diaphragm 106, in the embodiment, the lifting seat 37 is provided with an electrostatic eliminator 4 below the rotating needle 31 through a support 41, and the electrostatic eliminator 4 is arranged along the width direction of the diaphragm 106.

[0052] Figure 6 It can be understood that in this way, by configuring the electrostatic eliminator 4, the static electricity generated in the process is eliminated at the same time of the tail winding operation, the wrinkling of the diaphragm 106 caused by static adsorption is effectively reduced, the probability of short circuit of the battery cell 105 is reduced, and the yield of the battery cell 105 is improved.

[0053] It can be understood that in this way, by configuring the electrostatic eliminator 4, the static electricity generated in the process is eliminated at the same time of the tail winding operation, the wrinkling of the diaphragm 106 caused by static adsorption is effectively reduced, the probability of short circuit of the battery cell 105 is reduced, and the yield of the battery cell 105 is improved.

[0054] ​The tail roll structure is cancelled in the embodiment of the application, so that the diaphragm tail clamp device 2 can actually move to the position of the side end surface of the battery cell 105 during the tail roll operation, that is, the diaphragm tail clamp device 2 can clamp the diaphragm 106 all the time until the tail roll is completed, so that the diaphragm 106 has good tension during the tail roll operation of the diaphragm 106, so that the diaphragm 106 can uniformly wrap the battery cell 105, the stability and tightness of the diaphragm 106 wrapping the battery cell 105 are improved, the occurrence of the diaphragm 106 wrinkling is reduced, and the yield of the battery cell 105 is improved.

[0055] The embodiment of the application also provides a battery cell 105 laminating machine, which comprises the diaphragm 106 tailing mechanism.

[0056] The diaphragm tailing mechanism comprises a blanking manipulator 1, a diaphragm tail clamp device 2 and a tail roll device 3. When the lamination of the battery cell 105 at the stacking table 101 is completed, the blanking clamp 14 manipulator moves close to the stacking table 101 together with the diaphragm tail clamp device 2 while the stacking table 101 is raised, the blanking manipulator 1 clamps the battery cell 105 on the stacking table 101 and immediately moves to the tail roll position 103, the diaphragm 106 is lengthened to the required length during the moving process, the diaphragm tail clamp device 2 clamps the diaphragm 106, and then the cutter 246 cuts the diaphragm 106 (at this time, the stacking table 101 is lowered to the lamination height, and the lamination of the next battery cell 105 is performed), the blanking manipulator 1 and the diaphragm tail clamp device 2 move synchronously to make the diaphragm tail clamp device 2 avoid the pole returning position (the lamination of the next battery cell 105 is started between the stacking table 101 and the pole returning position), the blanking manipulator 1 moves to the tail roll position 103, the two pairs of roll needles 31 of the tail roll device 3 clamp the battery cell 105, and the blanking clamp 14 manipulator exits to the waiting position 104; then the long and short roll needles 31 of the tail roll device 3 rotate synchronously and in the same direction, so that the diaphragm 106 is wound and wrapped around the battery cell 105, the diaphragm tail clamp device 2 moves to the tail roll position 103 synchronously with the winding of the diaphragm 106, until all the diaphragm 106 is wound on the battery cell 105, after the tail roll is completed, the blanking clamp 14 manipulator moves from the waiting position 104 to the tail roll position 103 to clamp the battery cell 105 and transfer to the next process.

[0057] The above is not intended to limit the technical scope of the application in any way, and any modification, equivalent change and modification made to the above embodiment according to the technical essence of the application still belong to the scope of the technical scheme of the application.

Claims

1. A diaphragm tail wrap mechanism characterized by, The device comprises a blanking manipulator, a diaphragm tail clamp device and a tail roll device, the blanking manipulator reciprocates between a stacking table, a film cutting position and a tail roll position, the diaphragm tail clamp device and the tail roll device are respectively arranged at the film cutting position and the tail roll position; the blanking manipulator clamps the battery cell and the diaphragm on the stacking table and moves to the tail roll position, and pulls the diaphragm through the diaphragm tail clamp device; at the film cutting position, the diaphragm tail clamp device clamps the diaphragm and cuts the diaphragm between the tail clamp position and the stacking table; at the tail roll position, the battery cell on the blanking manipulator is transferred to the tail roll device, the tail roll device clamps the battery cell and drives the battery cell to rotate, so as to wind the diaphragm between the film cutting position and the tail roll position on the battery cell.

2. The septum tail wrap mechanism of claim 1, wherein, The blanking manipulator and the diaphragm tail clamp device are arranged on the same linear module, the linear module is a double-motor double-sliding-table linear module, and the blanking manipulator and the diaphragm tail clamp device are respectively arranged on the two sliding tables of the linear module.

3. The septum tail wrap mechanism of claim 2, wherein, The blanking manipulator comprises a blanking moving seat, a blanking rotating motor, a blanking rotating seat and a material clamp which are sequentially connected, the blanking moving seat is connected with one sliding table in the linear module, the blanking rotating motor is arranged on the blanking moving seat, the blanking rotating seat is in transmission connection with the driving end of the blanking rotating motor, the material clamp is arranged on one side of the blanking rotating seat, and the blanking rotating motor drives the blanking rotating seat and the material clamp to rotate on the horizontal plane.

4. The septum tail wrap mechanism of claim 1, wherein, The diaphragm tail clamp device comprises a tail clamp moving seat, a fixed clamp plate, a movable clamp plate and a diaphragm cutting assembly, the tail clamp moving seat is connected with one sliding table in the linear module, a mounting frame is arranged below the tail clamp moving seat, the fixed clamp plate is arranged at the lower end of the mounting frame, the movable clamp plate is movably arranged on the mounting frame and located directly above the fixed clamp plate, a clamp opening for clamping the diaphragm is formed between the movable clamp plate and the fixed clamp plate, the mounting frame is provided with a first lifting cylinder connected with the movable clamp plate and a first guide rail, the first lifting cylinder drives the movable clamp plate to move up and down along the first guide rail to clamp the diaphragm, and the diaphragm cutting assembly is movably arranged on one side of the mounting frame close to the stacking table, and a cutter of the diaphragm cutting assembly performs hot cutting work on the diaphragm clamped by the movable clamp plate and the fixed clamp plate through heat.

5. The septum tail wrap mechanism of claim 4, wherein, The diaphragm cutting assembly comprises a lifting plate, a guide rod, a cutter seat, a first pressing plate, a second pressing plate and a cutter, the lifting plate is movably arranged on the mounting frame through a second lifting cylinder, the guide rod is arranged on the lifting plate and in sliding contact with the lifting plate, the lower end of the guide rod is fixed with the cutter seat, the first pressing plate and the second pressing plate are fixed in parallel at the lower end of the cutter seat, the cutter is fixed between the first pressing plate and the second pressing plate and exposes a cutting edge in the direction of the fixed clamp plate, and the lifting plate is provided with a third lifting cylinder, the driving end of the third lifting cylinder is connected with the cutter seat, and the third lifting cylinder drives the cutter seat and the cutter to move along the guide rod.

6. The septum tail wrap mechanism of claim 5, wherein, The first pressing plate and the second pressing plate are electrically insulating plates, and the two ends of the cutter are connected with conductive blocks, and the conductive blocks are fixed with the first pressing plate.

7. The septum tail wrap mechanism of claim 1, wherein, The tail winding device comprises winding needles, clamping jaw cylinders, a rotary drive assembly, a lifting module and a translation module. Two pairs of winding needles are arranged on both sides of the tail winding position in the width direction of the diaphragm. Each pair of winding needles is arranged on two clamping blocks of the driving end of the clamping jaw cylinder. The two pairs of winding needles are clamped or released from the battery cell by the respective clamping jaw cylinders. The clamping jaw cylinders are arranged on the lifting seat of the lifting module by the rotary drive assembly. The rotary drive assembly drives the rotation of the winding needles and the clamped battery cell to wind the diaphragm on the battery cell. The lifting module is arranged on the translation seat of the translation module. Each pair of winding needles moves in the vertical direction and the horizontal direction by the lifting module and the translation module, respectively.

8. The septum tail wrap mechanism of claim 7, wherein, The rotary drive assembly comprises a rotary shaft and a winding motor. The rotary shaft is movably arranged on the lifting seat by a bearing. The winding motor is fixed on the lifting seat. The rotary shaft is sleeved with a driving wheel. The driving wheel is in transmission connection with the winding motor. One end of the rotary shaft is fixed with the clamping jaw cylinder. The other end of the rotary shaft is provided with an electrical slip ring for supplying power and air to the clamping jaw cylinder. The rotary shaft is internally provided with an air path and a wire slot. The electrical slip ring supplies air to the clamping jaw cylinder through the air path. The wire slot is provided with a power supply line electrically connected to the electrical slip ring and the clamping jaw cylinder.

9. The septum tail wrap mechanism of claim 7, wherein, The lifting seat is provided with an electrostatic bar below the winding needle by a support. The electrostatic bar is arranged in the width direction of the diaphragm.

10. An electrode stacker, characterized by comprising: The diaphragm tail winding mechanism comprises the diaphragm tail winding mechanism according to any one of claims 1 to 9.

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