Battery cell reverse winding device and battery cell recovery equipment

Abstract

The utility model provides a battery cell reverse winding device and battery cell recovery equipment. The battery cell reverse winding device comprises a base; the unwinding mechanism, the clamping mechanism and the reverse winding device are all arranged on the base; the unwinding mechanism is used for clamping the battery cell at the clamping station, and a diaphragm of the battery cell at the clamping station is provided with two starting ends; the clamping mechanism is used for grabbing the starting end of the diaphragm on the battery cell so as to convey the diaphragm to the reverse rolling device, and the reverse rolling device is used for reversely rolling the pole piece of the unfolded battery cell and the diaphragm respectively, so that classified recovery of the pole piece and the diaphragm is realized, and the recovery rate of metal elements in the pole piece is improved.

Description

Technical Field

[0001] This utility model belongs to the field of wound battery cell technology. Specifically, this utility model relates to a battery cell dewinding device and a battery cell recycling equipment. Background Technology

[0002] When dismantling and recycling used batteries, the common method is to crush the entire battery cell pack and then sort it.

[0003] However, the complete breakage of the battery cell leads to severe mixing of the positive and negative electrode materials and the separator, which greatly increases the difficulty and cost of subsequent separation; at the same time, the recovery rate of important metal elements in the electrode is low, and the recycling cost is also high. Utility Model Content

[0004] One objective of this invention is to provide a new technical solution for a battery cell dewinding device and a battery cell recycling equipment.

[0005] According to a first aspect of the present invention, a battery cell dewinding device is provided, comprising:

[0006] Base;

[0007] An unwinding mechanism, a clamping mechanism, and a rewinding device are provided, wherein the unwinding mechanism, the clamping mechanism, and the rewinding device are all disposed on the base;

[0008] The unwinding mechanism is used to clamp the battery cell in the clamping position, and the diaphragm of the battery cell in the clamping position has two starting ends.

[0009] The clamping mechanism is used to grip the starting end of the separator on the battery cell to transport the separator to the unwinding device, which is used to unwind the electrode and separator of the unfolded battery cell respectively.

[0010] Optionally, the unwinding mechanism includes a clamping bracket, two clamping spacing adjustment mechanisms, and two cell clamping claws. The clamping spacing adjustment mechanisms are disposed on the clamping bracket and are used to drive the cell clamping claws to move closer to or away from the cell so as to clamp the cell at the clamping position.

[0011] Optionally, the unwinding mechanism includes a cell clamping claw driving mechanism, which is disposed on the clamping gap adjusting mechanism;

[0012] The battery cell clamping claw drive mechanism can drive the battery cell clamping claw to rotate and provide feedback on the rotation direction and rotation angle of the battery cell clamping claw.

[0013] Optionally, it also includes a transfer mechanism, which includes a transfer bracket, a lateral movement structure, a lifting structure, and a cell gripper assembly. The cell gripper assembly is movably connected to the transfer bracket through the lifting structure and the lateral movement structure. The lifting structure is used to drive the cell gripper assembly to move up and down. The lateral movement structure can drive the lifting structure and the cell gripper assembly to move together. The cell gripper assembly is used to grip the unfolded cell to the anti-rolling station.

[0014] Optionally, the cell gripper assembly includes an opening and closing structure and two clamping plates, the two clamping plates being arranged at a distance from each other and both connected to the opening and closing structure;

[0015] A clamping space is formed between the two clamping plates, and the opening and closing structure is used to adjust the gap size of the clamping space.

[0016] Optionally, one end of the clamping plate is provided with multiple protruding teeth, and when a battery cell is gripped between the two clamping plates, the starting end of the separator on the battery cell is located between the protruding teeth of the two clamping plates.

[0017] Optionally, the transfer mechanism includes a clamping plate rotation structure, which is disposed on the lifting structure and can drive the battery cell gripper assembly to rotate.

[0018] Optionally, the gripping mechanism includes a gripping bracket, a translation module, a lifting assembly, and a starting gripper assembly. The starting gripper assembly is movably connected to the gripping bracket through the translation module and the lifting assembly. The lifting assembly is used to drive the starting gripper assembly to move up and down. The translation module can drive the lifting assembly and the starting gripper assembly to move together. The starting gripper assembly is used to grip the starting end of the diaphragm to the anti-rolling device.

[0019] Optionally, the starting gripper assembly includes a plurality of grippers, with a gripping gap formed between adjacent teeth, and the grippers can extend into the gripping gap to grip the starting end of the diaphragm.

[0020] Optionally, the anti-winding device includes a diaphragm electrode anti-winding mechanism and an electrode anti-winding mechanism;

[0021] The clamping mechanism is used to grip the starting end of the diaphragm to the diaphragm electrode unwinding mechanism, and the electrode unwinding mechanism is used to unwind the electrode on the outside of the diaphragm.

[0022] Optionally, the diaphragm electrode rewinding mechanism includes a rewinding bracket, a winding device, a winding device telescopic mechanism, and a material-scraping baffle. The winding device is movably connected to the rewinding bracket via the winding device telescopic mechanism. The winding device includes two winding rollers. The clamping mechanism is used to grip the starting end of the diaphragm between the two winding rollers. The material-scraping baffle is used to stop the rewinding of the diaphragm electrode when the winding device is retracted to the rewinding bracket.

[0023] Optionally, the electrode rewinding mechanism includes an electrode tightening assembly, which includes an electrode tightening roller and an electrode clamping roller. The electrode clamping roller can approach the electrode tightening roller to clamp the electrode on the outside of the diaphragm between the electrode tightening roller and the electrode clamping roller. When the electrode tightening roller rotates, it can rewind the electrode on the outside of the diaphragm.

[0024] Optionally, it also includes a posture adjustment mechanism, which includes a dropping frame, a cell limiting baffle and a roller. The dropping frame is used to accommodate the cells falling from the rewinding station. The cell limiting baffle is used to limit the two sides of the cell. The roller can support the diaphragm electrode during the rewinding process when it rotates.

[0025] Optionally, the attitude adjustment mechanism includes a discharge baffle and a discharge baffle moving mechanism. The bottom of the discharge frame is provided with a discharge port, and the discharge baffle is movably disposed at the discharge port through the discharge baffle moving mechanism.

[0026] According to a second aspect of the present invention, a battery cell recycling device is provided, which includes the battery cell dewinding device described in the first aspect.

[0027] One technical advantage of this utility model is:

[0028] This application provides a battery cell dewinding device, which includes a base; an unwinding mechanism, a clamping mechanism, and a dewinding device, all of which are disposed on the base; the unwinding mechanism is used to clamp the battery cell in the clamping position, and the separator of the battery cell in the clamping position has two starting ends; the clamping mechanism is used to grasp the starting ends of the separator on the battery cell to transport the separator to the dewinding device; the dewinding device is used to dewind the electrode and separator of the unfolded battery cell respectively, so as to realize the classification and recycling of the electrode and separator and improve the metal element recovery rate in the electrode.

[0029] Other features and advantages of the present invention will become clear from the following detailed description of exemplary embodiments of the present invention with reference to the accompanying drawings. Attached Figure Description

[0030] The accompanying drawings, which are incorporated in and form part of this specification, illustrate embodiments of the present invention and, together with their description, serve to explain the principles of the present invention.

[0031] Figure 1 A schematic diagram of a battery cell dewinding device provided in one embodiment of the present invention;

[0032] Figure 2 A schematic diagram of the transfer mechanism of a battery cell dewinding device provided in one embodiment of this utility model;

[0033] Figure 3 A schematic diagram of the unwinding mechanism of a battery cell dewinding device provided in one embodiment of this utility model;

[0034] Figure 4 A schematic diagram of the attitude adjustment mechanism of a battery cell dewinding device provided in one embodiment of this utility model. Figure 1 ;

[0035] Figure 5 A schematic diagram of the attitude adjustment mechanism of a battery cell dewinding device provided in one embodiment of this utility model. Figure 2 ;

[0036] Figure 6 A schematic diagram of the clamping mechanism of a battery cell dewinding device provided in one embodiment of this utility model;

[0037] Figure 7 A schematic diagram of the diaphragm electrode rewinding mechanism of a battery cell rewinding device provided in one embodiment of this utility model. Figure 1 ;

[0038] Figure 8 A schematic diagram of the diaphragm electrode rewinding mechanism of a battery cell rewinding device provided in one embodiment of this utility model. Figure 2 ;

[0039] Figure 9 This is a schematic diagram of the electrode feeding hopper of a battery cell dewinding device provided in one embodiment of the present invention.

[0040] in:

[0041] 1. Base;

[0042] 2. Transfer mechanism; 201. Transfer bracket; 202. Lateral movement structure; 203. Lifting structure; 204. Clamping plate rotation structure; 205. Cell gripper assembly; 2051. Opening and closing structure; 2052. Clamping plate;

[0043] 3. Unwinding mechanism; 301. Clamping bracket; 302. Clamping gap adjustment mechanism; 303. Cell clamping claw; 304. Cell clamping claw drive mechanism;

[0044] 4. Attitude adjustment mechanism; 401. Unloading frame; 402. Cell limiting baffle; 403. Cell limiting baffle adjustment mechanism; 406. Unloading baffle; 407. Overpass roller; 410. Unloading baffle moving mechanism; 411. Cell limiting baffle force adjustment mechanism;

[0045] 5. Clamping mechanism; 501. Gripping bracket; 502. Translation module; 503. Lifting assembly; 504. Starting gripper assembly;

[0046] 6. Diaphragm electrode rewinding mechanism; 601. Rewinding bracket; 602. Winding device; 6021. Winding roller assembly; 6022. Winding roller drive assembly; 603. Winding device telescopic mechanism; 604. Material feeding baffle; 605. Detection sensor;

[0047] 7. Electrode feeding hopper;

[0048] 12. Electrode rewinding mechanism; 1201. Electrode tightening roller; 1202. Electrode clamping roller; 1203. Electrode tightening roller drive component; 1204. Electrode clamping roller moving mechanism;

[0049] 100. Battery cells. Detailed Implementation

[0050] Various exemplary embodiments of the present invention will now be described in detail with reference to the accompanying drawings. It should be noted that, unless otherwise specifically stated, the relative arrangement, numerical expressions, and values ​​of the components and steps set forth in these embodiments do not limit the scope of the present invention.

[0051] The embodiments of this application will now be described in detail, examples of which are illustrated in the accompanying drawings. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this application, and should not be construed as limiting this application. All other embodiments obtained by those skilled in the art based on the embodiments of this application without inventive effort are within the scope of protection of this application.

[0052] The terms "first" and "second" in the specification and claims of this application may explicitly or implicitly include one or more of the features. In the description of this application, unless otherwise stated, "multiple" means two or more. Furthermore, "and / or" in the specification and claims indicates at least one of the connected objects, and the character " / " generally indicates that the preceding and following objects are in an "or" relationship.

[0053] In the description of this application, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc., indicating the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this application.

[0054] In the description of this application, it should be noted that, unless otherwise expressly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection between two components. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.

[0055] It should be noted that similar labels and letters in the following figures indicate similar items; therefore, once an item is defined in one figure, it does not need to be discussed further in subsequent figures.

[0056] Reference Figure 1 This application provides a battery cell dewinding device, which includes:

[0057] Base 1;

[0058] The unwinding mechanism 3, the clamping mechanism 5, and the antiwinding device are all located on the base 1.

[0059] The unwinding mechanism 3 is used to clamp the battery cell 100 in the clamping position. The diaphragm of the battery cell 100 in the clamping position has two starting ends.

[0060] The gripping mechanism 5 is used to grip the starting end of the separator on the battery cell to transport the separator to the unwinding device, which is used to unwind the electrode and separator of the unfolded battery cell 100 respectively.

[0061] In this embodiment, the base 1 serves as the structural frame of the cell dewinding device, providing an installation position and protection for the unwinding mechanism 3, the clamping mechanism 5, and the dewinding device.

[0062] In this embodiment, see Figure 1The unwinding mechanism 3 can clamp the battery cell 100 in the clamping position along the Y direction, and the battery cell 100 can be unwound along the X direction; while the clamping mechanism 5 can move up and down in the Z direction so that the clamping mechanism 5 can grab the starting end of the separator on the battery cell.

[0063] In this embodiment, the starting end of the diaphragm can be obtained by cutting the diaphragm using a diaphragm cutting mechanism. The diaphragm cutting mechanism can include a cutting head. When the cutting head moves, it can cut the outer diaphragm of the cell 100 at the cutting station to cut the diaphragm at the cutting position, so that two starting ends of the diaphragm can be obtained on both sides of the cutting position.

[0064] In one embodiment, the cutting head can cut the outermost separator of the battery cell 100 at the cutting station while moving, that is, cut the outermost separator. One starting end of the cut outermost separator is at the far end of the battery cell winding and becomes a waste separator, which will fall off the battery cell; the other starting end is at the near end of the battery cell winding, that is, the separator that is still connected to the center of the battery cell.

[0065] In one embodiment, the cutting head, while moving, can cut the outermost and second-outermost separators of the battery cell 100 at the cutting station, that is, cut the outermost and second-outermost separators apart. One starting end of the cut outermost and second-outermost separators is at the far end of the battery cell winding and will fall off the battery cell; the other starting end of the outermost separator will also fall off the battery cell and be recycled as waste separator, while the other starting end of the second-outermost separator is at the near end of the battery cell winding, that is, the separator is still connected to the center of the battery cell. Moreover, the electrode between the outermost and second-outermost separators can be exposed, and after the electrode is separated from the separator, it can be reverse-wound and recycled.

[0066] In one embodiment, the cutting head, while moving, can cut the outermost, second-outermost, and second-second-outermost (the second-outermost layer being the membrane furthest from the outermost) separators of the battery cell 100 at the cutting station. This means the outermost, second-outermost, and second-second-outermost separators are cut apart. One starting end of the cut outermost and second-outermost separators is at the far end of the battery cell winding and will fall off the battery cell. The other starting end of the outermost separator will also fall off the battery cell and be recycled as waste separator. The other starting end of the second-outermost and second-second-outermost separators is at the near end of the battery cell winding, meaning it remains connected to the center of the battery cell. Furthermore, the electrode between the outermost and second-outermost separators can be exposed and, after separating from the separator, can be unwound and recycled. Simultaneously, the electrode between the second-outermost and second-second-outermost separators can be unwound and recycled along with the second-outermost and second-second-outermost separators.

[0067] In one embodiment, the preceding robotic arm grips the battery cell 100 to the clamping station, and the two clamping structures of the unwinding mechanism 3 clamp the battery cell 100 at both ends, keeping the battery cell 100 in the clamping station. Then, the preceding robotic arm retracts. The diaphragm separation mechanism can lift and clamp the starting end of the diaphragm, and as the diaphragm separation mechanism moves the starting end of the diaphragm away from the battery cell 100, it can unfold the battery cell 100. After the battery cell is unfolded, the electrodes and diaphragms can be sorted and recycled, avoiding the mixed collection of electrodes and diaphragms. At the same time, after the electrodes and diaphragms are separated, the recovery rate of metal elements in the electrodes is improved, and the recycling cost is reduced.

[0068] The battery cell unwinding device provided in this application includes a base 1; an unwinding mechanism 3, a clamping mechanism 5, and an unwinding device, all of which are disposed on the base 1; the unwinding mechanism 3 is used to clamp the battery cell 100 in the clamping position, and the separator of the battery cell 100 in the clamping position has two starting ends; the clamping mechanism 5 is used to grasp the starting ends of the separator on the battery cell to transport the separator to the unwinding device; the unwinding device is used to unwind the electrode and separator of the unfolded battery cell 100 respectively, so as to realize the classification and recycling of the electrode and separator and improve the metal element recovery rate in the electrode.

[0069] In one embodiment, see Figure 3 The unwinding mechanism 3 includes a clamping bracket 301, two clamping distance adjustment mechanisms 302 and two cell clamping claws 303. The clamping distance adjustment mechanism 302 is disposed on the clamping bracket 301 and is used to drive the cell clamping claws 303 to move closer to or away from the cell so as to clamp the cell 100 in the clamping position.

[0070] In this embodiment, when the battery cell is transferred to the clamping station, the two battery cell clamping claws 303 move towards each other to clamp both ends of the battery cell in the height direction of the Y battery cell, which facilitates the unwinding of the battery cell.

[0071] In this embodiment, the clamping gap adjustment mechanism 302 drives the cell clamping claws 303 to move to clamp the cell. Specifically, the two cell clamping claws 303 move closer to or further away from the cell 100 from both sides of the cell 100 to clamp or release the cell 100, ensuring the stability of the cell at the clamping position.

[0072] In one embodiment, the end of the battery cell clamping claw 303 facing the battery cell is provided with a round nail protrusion. When clamping the battery cell, the battery cell clamping claw 303 can be inserted into the battery cell through the round nail protrusion to stabilize the clamping effect on the battery cell.

[0073] In one embodiment, see Figure 3 The unwinding mechanism 3 includes a cell clamping claw drive mechanism 304, which is disposed on the clamping distance adjustment mechanism 302.

[0074] The battery cell clamping claw drive mechanism 304 can drive the battery cell clamping claw 303 to rotate and provide feedback on the rotation direction and rotation angle of the battery cell clamping claw 303.

[0075] In this embodiment, the battery cell clamping claw driving mechanism 304 can drive the battery cell clamping claws 303 to move towards each other, so that when the battery cell is in the clamping position of the unwinding mechanism 3, the clamping distance adjustment mechanism 302 can adjust the distance between the battery cell clamping claws 303 according to the battery cell height to hold the battery cell.

[0076] On the other hand, the battery cell clamping claw drive mechanism 304 can be a servo motor with an absolute encoder, which can realize the rotation control of the battery cell clamping claw 303. That is, the battery cell clamping claw drive mechanism 304 can realize the rotation of the battery cell while driving the battery cell clamping claw 303 to rotate. At the same time, the battery cell clamping claw drive mechanism 304 can provide feedback on the rotation direction and angle of the battery cell clamping claw 303. The rotation direction of the battery cell clamping claw 303 is consistent with the unfolding direction of the battery cell, so as to realize the detection of the winding direction of the battery cell and facilitate the transfer mechanism 2 to transfer the polarity of the battery cell.

[0077] In one embodiment, see Figure 2 It also includes a transfer mechanism 2, which includes a transfer bracket 201, a transverse structure 202, a lifting structure 203, and a cell gripper assembly 205. The cell gripper assembly 205 is movably connected to the transfer bracket 201 through the lifting structure 203 and the transverse structure 202. The lifting structure 203 is used to drive the cell gripper assembly 205 to rise and fall, and the transverse structure 202 can drive the lifting structure 203 and the cell gripper assembly 205 to move together. The cell gripper assembly 205 is used to grab the unfolded cell to the anti-rolling station.

[0078] In this embodiment, the cell transfer mechanism 2 is used to transfer the cell from the previous process to the unwinding mechanism 3. The lifting structure 203 is used to adjust the height of the cell gripper assembly 205 to avoid obstructing the structures of the preceding and following processes.

[0079] In this embodiment, the lateral movement structure 202 can be driven by a servo motor and belt to achieve horizontal movement of the cell gripper assembly 205, and the lifting structure 203 is driven by a servo motor and screw to achieve lifting movement of the cell gripper assembly 205. The cell gripper assembly 205 can use a cylinder-driven clamping plate to grip the cell, that is, the transfer mechanism 2 can transport the cell from the unwinding mechanism 3 to the clamping mechanism 8, which facilitates gripping of the diaphragm starting end and improves the efficiency of cell rewinding.

[0080] In one embodiment, see Figure 2The battery cell gripper assembly 205 includes an opening and closing structure 2051 and two clamping plates 2052, which are arranged at intervals relative to each other and are both connected to the opening and closing structure 2051.

[0081] A clamping space is formed between the two clamping plates 2052, and the opening and closing structure 2051 is used to adjust the gap size of the clamping space.

[0082] In this embodiment, when the battery cell gripper assembly 205 moves toward the battery cell, it can accommodate the battery cell into the clamping space between the two clamping plates 2052. Moreover, the opening and closing structure 2051 can adjust the gap size of the clamping space to match the thickness of the battery cell, ensuring the stability of the battery cell between the two clamping plates 2052.

[0083] In one embodiment, see Figure 2 One end of the clamping plate 2052 is provided with multiple protruding teeth. When the two clamping plates 2052 are used to grip the battery cell, the starting end of the separator on the battery cell is located between the protruding teeth of the two clamping plates 2052.

[0084] In this embodiment, when the cell transfer mechanism 2 is working, the transverse structure 202 moves to the cell of the previous process, and the clamping plate 2052 clamps the cell. The starting end of the cell separator is located at the opening of the protruding teeth on the clamping plate 2052. The clamping plate rotation structure 204 determines which mirror station the cell is matched with according to the winding direction of the cell. As needed, it can rotate the cell 180° to accurately send the cell to the unwinding mechanism 3, thereby improving the efficiency of cell transfer.

[0085] In one embodiment, see Figure 2 The transfer mechanism 2 includes a clamping plate rotating structure 204, which is disposed on the lifting structure 203 and can drive the battery cell gripper assembly 205 to rotate.

[0086] In this embodiment, the clamping plate rotating structure 204 is used to distribute the battery cells to a suitable mirror position according to the battery cell winding direction.

[0087] In one embodiment, the clamping plate rotating structure 204 can be a hollow rotating platform. After determining the winding direction of the battery cell, the clamping plate rotating structure 204 can make corresponding posture adjustments according to the winding direction of the battery cell, so that the winding direction of the battery cell is consistent with the winding direction required for the subsequent anti-winding action, which facilitates the anti-winding operation of the battery cell.

[0088] In one embodiment, see Figure 6The gripping mechanism 5 includes a gripping bracket 501, a translation module 502, a lifting component 503, and a starting gripper component 504. The starting gripper component 504 is movably connected to the gripping bracket 501 through the translation module 502 and the lifting component 503. The lifting component 503 is used to drive the starting gripper component 504 to rise and fall. The translation module 502 can drive the lifting component 503 and the starting gripper component 504 to move together. The starting gripper component 504 is used to grip the starting end of the diaphragm to the anti-rolling device.

[0089] In this embodiment, the translation module 502 can be driven by a servo motor and belt to achieve horizontal movement of the starting gripper assembly 504, and the lifting assembly 503 can be driven by a cylinder to achieve lifting and lowering of the starting gripper assembly 504. The starting gripper assembly 504 can grip the starting end of the diaphragm wound inside the cell; specifically, the starting gripper assembly 504 can be driven by a gripper cylinder, with a clamping block with a rubber pad installed on the cylinder head for gripping the unfolded starting end of the diaphragm; the starting gripper assembly 504 can grip and transport the starting end of the diaphragm to the anti-winding device to facilitate the anti-winding action of the anti-winding device on the diaphragm.

[0090] In one embodiment, see Figure 6 The starting gripper assembly 504 includes multiple grippers with a gripping gap formed between adjacent teeth. The grippers can extend into the gripping gap to grip the starting end of the diaphragm.

[0091] In this embodiment, when the cell transfer mechanism 2 transfers the cell to the unwinding mechanism 3, the clamping mechanism 5 moves toward the unwinding mechanism 3, and the starting gripper assembly 504 clamps the starting end of the diaphragm at the clamping plate 2052, pulling the diaphragm to the working position of the diaphragm electrode unwinding mechanism 6 to facilitate the unwinding of the diaphragm electrode.

[0092] In one embodiment, see Figure 7 and Figure 8 The anti-winding device includes a diaphragm electrode anti-winding mechanism 6 and an electrode anti-winding mechanism 12;

[0093] The clamping mechanism 5 is used to grip the starting end of the diaphragm to the diaphragm electrode unwinding mechanism 6, and the electrode unwinding mechanism 12 is used to unwind the electrode on the outside of the diaphragm.

[0094] In this embodiment, the diaphragm electrode unwinding mechanism 6 can be used to unwind the diaphragm electrode. The diaphragm electrode can refer to an electrode sandwiched between two layers of diaphragms. For example, a negative electrode is sandwiched between two layers of diaphragms. The remaining electrode can be shaken off the diaphragm electrode and then wound onto the electrode unwinding mechanism 12. For example, a positive electrode can be shaken off the diaphragm electrode and then wound onto the electrode unwinding mechanism 12. This allows the electrode unwinding mechanism 12 to unwind the electrode on the outside of the diaphragm, thereby achieving the classification and recycling of the electrode and the diaphragm.

[0095] In one embodiment, see Figure 7 The diaphragm electrode rewinding mechanism 6 includes a rewinding bracket 601, a winding device 602, a winding device telescopic mechanism 603, and a material-scraping baffle 604. The winding device 602 is movably connected to the rewinding bracket 601 through the winding device telescopic mechanism 603. The winding device 602 includes two winding rollers. The clamping mechanism 5 is used to grip the starting end of the diaphragm between the two winding rollers. The material-scraping baffle 604 is used to stop the rewinding of the diaphragm electrode when the winding device 602 is retracted to the rewinding bracket 601.

[0096] In this embodiment, the winding device 602 includes a winding roller assembly 6021 and a winding roller drive assembly 6022. After the clamping mechanism 5 pulls the diaphragm over, the winding device 602 extends and reverses the diaphragm electrode sheet. After the diaphragm electrode sheet is reversed, the stripping baffle 604 extends and the winding device 602 retracts. The diaphragm electrode sheet wound on the winding roller is stripped off by the stripping baffle 604 and collected in the electrode sheet drop hopper 7.

[0097] In one embodiment, after the clamping mechanism 5 grips the starting end of the diaphragm to the diaphragm electrode rewinding mechanism 6, the winding device telescopic mechanism 603 drives the winding roller assembly 6021 to extend. At this time, the diaphragm electrode is located between the two winding rollers. The winding roller drive assembly 6022 drives the winding roller assembly 6021 to rotate so as to wind the diaphragm onto the winding roller. After one cell is rewinded, the winding roller drive assembly 6022 rotates the two winding rollers to the vertical position, that is, the two winding rollers are arranged one above the other. The material-pushing baffle 604 extends out as the material-pushing baffle retracts. At the same time as the winding device telescopic mechanism 603 retracts, the material roll of the diaphragm electrode after rewinding is pushed away from the winding roller by the material-pushing baffle to obtain the material roll of the diaphragm electrode after rewinding, which facilitates the recycling and utilization of the diaphragm electrode.

[0098] In one embodiment, the diaphragm electrode rewinding mechanism 6 may be equipped with a detection sensor 605. The detection sensor is used to detect whether the material roll has been wound up and whether the material roll has broken. If the material roll breaks, the rewound battery cell is rejected and a new battery cell is replaced to perform the rewinding operation, thus ensuring the effectiveness of the battery cell rewinding.

[0099] In one embodiment, see Figure 4 The electrode rewinding mechanism 12 includes an electrode tightening assembly, which includes an electrode tightening roller 1201 and an electrode clamping roller 1202. The electrode clamping roller 1202 can approach the electrode tightening roller 1201 to clamp the electrode on the outside of the diaphragm between the electrode tightening roller and the electrode clamping roller 1202. When the electrode tightening roller 1201 rotates, it can rewind the electrode on the outside of the diaphragm.

[0100] In this embodiment, the electrode rewinding mechanism 12 includes an electrode tightening roller drive 1203 and an electrode clamping roller moving mechanism 1204. The electrode tightening roller drive 1203 is used to drive the electrode tightening roller 1201 to rotate, and the electrode clamping roller moving mechanism 1204 is used to drive the electrode clamping roller 1202 to approach the electrode tightening roller 1201.

[0101] In this embodiment, the rotation of the electrode tightening roller can be synchronized with the anti-rolling of the diaphragm electrode anti-rolling mechanism 6, so as to pull and peel the electrode from the diaphragm electrode while realizing the synchronous anti-rolling of the electrode and the diaphragm electrode, thereby improving the efficiency of cell anti-rolling.

[0102] In one embodiment, see Figure 4 It also includes a posture adjustment mechanism 4, which includes a dropping frame 401, a cell limiting baffle 402 and a roller 407. The dropping frame 401 is used to accommodate the cells falling from the rewinding station, the cell limiting baffle 402 is used to limit the two sides of the cells, and the roller 407 can support the diaphragm electrode sheet during the rewinding process when it rotates.

[0103] In this embodiment, the attitude adjustment mechanism 4 further includes a cell limiting baffle adjustment mechanism 403 and a cell limiting baffle force adjustment mechanism 411. The cell limiting baffle adjustment mechanism 403 is used to adjust the distance between the two cell limiting baffles 402 so that the distance between the two cell limiting baffles 402 matches the height of the cell. The cell limiting baffle force adjustment mechanism 411 can ensure that the cell limiting baffles 402 always restrict the cell with a certain force without jamming the cell, thus ensuring the stability of the cell flipping.

[0104] In this embodiment, the cell limiting baffle 402 includes baffles located on both sides of the blanking frame 401. The cell limiting baffle 402 can move the baffles on both sides towards the cell according to the cell height, so that the cell can only rotate within the constraint range between the two baffles, avoiding deviation when the cell is reverse-rolled. The roller 407 can provide support for the strip of material that unfolds the cell during the reverse-rolling process.

[0105] In one embodiment, a spring buffer is connected to the end of the cell limiting baffle 402. The spring buffer can provide buffering while the baffle limits the cell, so that the baffle has a certain elasticity when constraining the cell, so as to avoid the strip breaking due to the baffle hard contacting the cell.

[0106] In one embodiment, see Figure 4 and Figure 5 The attitude adjustment mechanism 4 includes a material discharge baffle 406 and a material discharge baffle moving mechanism 410. The bottom of the material discharge frame 401 is provided with a material discharge port, and the material discharge baffle 406 is movably set at the material discharge port through the material discharge baffle moving mechanism 410.

[0107] In this embodiment, the battery cell is released after the unwinding mechanism 3 finishes unwinding and falls onto the discharge baffle 406. The battery cell limiting baffle adjustment mechanism 403 drives the battery cell limiting baffle 402 to a set position according to the battery cell height measured in the previous process. When the diaphragm electrode rewinding mechanism 6 rewinds the battery cell, the battery cell is controlled to roll in the attitude adjustment mechanism 4 until the battery cell rewinding is completed. The discharge baffle 406 moves and opens the discharge port, dropping the electrode sheet into the lower electrode sheet discharge hopper 7.

[0108] Specifically, see Figure 1 The cell transfer mechanism 2 places the cell on the unwinding mechanism 3. The clamping mechanism 5 clamps the beginning of the diaphragm and pulls it to the left and down. At the same time, the unwinding mechanism 3 unwinds the diaphragm electrode sheet. The diaphragm electrode sheet unwinding mechanism 6 passes between the two rollers. The diaphragm electrode sheet unwinding mechanism 6 begins to unwind. At the same time, the clamping mechanism 5 releases the diaphragm, and the unwinding mechanism 3 unwinds. After the diaphragm electrode sheet is wrapped around the diaphragm electrode sheet unwinding mechanism 6, the unwinding mechanism 3 releases the cell and it falls to the lower attitude adjustment mechanism 4. The diaphragm electrode sheet unwinding mechanism 6 continues to unwind, and the attitude adjustment mechanism 4 simultaneously restricts the attitude of the cell to reduce the risk of tape breakage until the cell unwinding is completed.

[0109] In one specific embodiment, the clamping mechanism 5 moves to the clamping station, the starting gripper assembly 504 clamps the diaphragm between the clamping plates 2052, the cell transfer mechanism 2 releases and exits the cell, the translation module 502 moves to the lower left to the limit position and pulls the diaphragm to the lower left. At the same time as pulling, the cell clamping claw drive mechanism 304 drives the cell to rotate, the diaphragm electrode side is pulled to the lower left, and the cell side is actively unwound.

[0110] After the diaphragm electrode is pulled to the leftmost limit position of the translation module 502, the lifting component 503 moves up and down rapidly to shake off the lower electrode adhering to the diaphragm. The lower electrode can be a negative electrode. The lower electrode falls onto the dropping baffle 406 of the attitude adjustment mechanism 4. Then, the electrode clamping roller moving mechanism 1204 drives the electrode clamping roller 1202 to press against the electrode tightening roller 1201, clamping the lower electrode between the electrode tightening roller 1201 and the electrode clamping roller 1202.

[0111] The winding device 602 of the diaphragm electrode unwinding mechanism 6 extends. At this time, the electrode between the two layers of diaphragm clamped by the clamping mechanism 5 is located between the two winding rollers of the winding device 602. For example, the diaphragm electrode formed by the positive electrode between the two layers of diaphragm is located between the two winding rollers of the winding device 602. The winding device 602 winds up, and at the same time, the starting gripper assembly 504 releases the diaphragm electrode. The cell clamping claw drive mechanism 304 unwinds, winding the diaphragm electrode several times onto the winding device 602.

[0112] The two clamping structures of the clamping spacing adjustment mechanism 302 are moved away from each other, causing the battery cell on the battery cell clamping claw 303 to fall onto the dropping baffle 406 of the attitude adjustment mechanism 4. The battery cell limiting baffle adjustment mechanism 403 adjusts the spacing of the battery cell limiting baffle 402 according to the battery cell height to frame the battery cell. At the same time, the battery cell limiting baffle force adjustment mechanism 411 ensures that the battery cell limiting baffle 402 always restricts the battery cell with a certain force.

[0113] The diaphragm electrode rewinding mechanism 6 continues to rewind the battery cell. At this time, the diaphragm electrode rests on the roller 407, and the battery cell tumbles on the discharge baffle 406. Once the detection sensor detects that the rewinding of the battery cell is complete, the discharge baffle moving mechanism 410 moves the discharge baffle 406 away, and the lower electrode falls into the lower hopper. At the same time, at the diaphragm electrode rewinding mechanism 6, the winding device 602 rotates to a position where the two winding rollers are relatively vertical. The stripping baffle 604 extends, and the winding device telescopic mechanism 603 drives the winding device 602 to retract. The diaphragm electrode is stripped off by the stripping baffle 604 and falls into the electrode discharge hopper 7, completing the battery cell rewinding and separation.

[0114] This application provides a battery cell recycling device, which includes the aforementioned battery cell dewinding device.

[0115] This battery cell recycling equipment can realize processes such as battery cell feeding, separator cutting, electrode separation, and classified collection, thereby improving the efficiency of battery cell recycling. At the same time, the battery cell recycling equipment can be equipped with dust removal and purification devices to remove harmful impurities such as dust and waste gas generated throughout the process, ensuring the environmental friendliness of the battery cell recycling process.

[0116] Although specific embodiments of the present invention have been described in detail by way of examples, those skilled in the art should understand that the above examples are for illustrative purposes only and are not intended to limit the scope of the present invention. Those skilled in the art should understand that modifications can be made to the above embodiments without departing from the scope and spirit of the present invention. The scope of the present invention is defined by the appended claims.

Claims

1. An electrode core reverse winding device characterized by comprising: The application relates to a battery cell winding and unwinding device. The device comprises: a base (1); an unwinding mechanism (3), a clamping mechanism (5) and a rewinding device, which are arranged on the base (1); the unwinding mechanism (3) is used for clamping a battery cell (100) at a clamping station, the diaphragm of the battery cell (100) at the clamping station has two starting ends; 2. The cell unroll device of claim 1, wherein, the clamping mechanism (5) is used for grabbing the starting ends of the diaphragm on the battery cell, so as to transport the diaphragm to the rewinding device, and the rewinding device is used for rewinding the pole piece and the diaphragm of the unwound battery cell (100) respectively.

3. The cell unroll device of claim 2, wherein, The unwinding mechanism (3) comprises a clamping support (301), two clamping distance adjusting mechanisms (302) and two battery cell clamping claws (303), the clamping distance adjusting mechanisms (302) are arranged on the clamping support (301) and are used for driving the battery cell clamping claws (303) to approach or move away from the battery cell, so as to clamp the battery cell (100) at the clamping station. The unwinding mechanism (3) comprises a battery cell clamping claw driving mechanism (304), which is arranged on the clamping distance adjusting mechanism (302); 4. The cell unroll device of claim 1, wherein, The battery cell clamping claw driving mechanism (304) can drive the battery cell clamping claw (303) to rotate and feed back the rotating direction and rotating angle of the battery cell clamping claw (303).

5. The cell unroll device of claim 4, wherein, The device further comprises a transfer mechanism (2), which comprises a transfer support (201), a horizontal moving structure (202), a lifting structure (203) and a battery cell gripper assembly (205), the battery cell gripper assembly (205) is movably connected to the transfer support (201) through the lifting structure (203) and the horizontal moving structure (202), the lifting structure (203) is used for driving the battery cell gripper assembly (205) to lift, the horizontal moving structure (202) can drive the lifting structure (203) and the battery cell gripper assembly (205) to move together, and the battery cell gripper assembly (205) is used for grabbing the unwound battery cell to a rewinding station. The battery cell gripper assembly (205) comprises an opening and closing structure (2051) and two clamping plates (2052), the two clamping plates (2052) are oppositely arranged and connected to the opening and closing structure (2051); 6. The cell unroll device of claim 5, wherein, a clamping space is formed between the two clamping plates (2052), and the opening and closing structure (2051) is used for adjusting the gap size of the clamping space.

7. The cell unroll device of claim 4, wherein, One end of the clamping plate (2052) is provided with a plurality of protruding teeth, and when the battery cell is grabbed between the two clamping plates (2052), the starting end of the diaphragm on the battery cell is located between the protruding teeth of the two clamping plates (2052). The transfer mechanism (2) comprises a clamping plate rotating structure (204), which is arranged on the lifting structure (203) and can drive the battery cell gripper assembly (205) to turn.

8. The cell unroll device of claim 6, wherein, The clamping mechanism (5) comprises a grabbing support (501), a translation module (502), a lifting assembly (503), and a starting end gripper assembly (504), the starting end gripper assembly (504) is movably connected to the grabbing support (501) through the translation module (502) and the lifting assembly (503), the lifting assembly (503) is used for driving the starting end gripper assembly (504) to lift, the translation module (502) can drive the lifting assembly (503) and the starting end gripper assembly (504) to move together, and the starting end gripper assembly (504) is used for grabbing the starting end of the diaphragm to the uncoiling device.

9. The cell unroll device of claim 8, wherein, The starting end gripper assembly (504) comprises a plurality of clamping jaws, and a grabbing gap is formed between adjacent protrusions, and the clamping jaws can extend into the grabbing gap to grab the starting end of the diaphragm.

10. The cell unroll device of claim 1, wherein, The uncoiling device comprises a diaphragm pole piece uncoiling mechanism (6) and a pole piece uncoiling mechanism (12). The clamping mechanism (5) is used for grabbing the starting end of the diaphragm to the diaphragm pole piece uncoiling mechanism (6), and the pole piece uncoiling mechanism (12) is used for uncoiling the pole piece outside the diaphragm.

11. The cell unroll device of claim 10, wherein, The diaphragm pole piece uncoiling mechanism (6) comprises an uncoiling support (601), a winding device (602), a winding device telescopic mechanism (603), and a material scraping baffle (604), the winding device (602) is movably connected to the uncoiling support (601) through the winding device telescopic mechanism (603), the winding device (602) comprises two winding rollers, the clamping mechanism (5) is used for grabbing the starting end of the diaphragm between the two winding rollers, and the material scraping baffle (604) is used for stopping the uncoiled diaphragm pole piece when the winding device (602) is retracted to the uncoiling support (601).

12. The cell unroll device of claim 10, wherein, The pole piece uncoiling mechanism (12) comprises a pole piece tightening assembly, the pole piece tightening assembly comprises a pole piece tightening roller (1201) and a pole piece clamping roller (1202), the pole piece clamping roller (1202) can be close to the pole piece tightening roller (1201) to clamp the pole piece outside the diaphragm between the pole piece tightening roller and the pole piece clamping roller (1202), and the pole piece tightening roller (1201) can uncoil the pole piece outside the diaphragm in rotation.

13. The cell unroll device of claim 12, wherein, Further comprising a posture adjusting mechanism (4), the posture adjusting mechanism (4) comprises a blanking frame (401), a battery cell limiting baffle (402), and a passing roller (407), the blanking frame (401) is used for accommodating the battery cell dropped from the uncoiling station, the battery cell limiting baffle (402) is used for limiting the two sides of the battery cell, and the passing roller (407) can support the diaphragm pole piece in the uncoiling process in rotation.

14. The cell unroll device of claim 13, wherein, The posture adjusting mechanism (4) comprises a blanking baffle (406) and a blanking baffle moving mechanism (410), the bottom of the blanking frame (401) is provided with a blanking opening, and the blanking baffle (406) is movably arranged in the blanking opening through the blanking baffle moving mechanism (410).

15. An electric chip recycling apparatus, characterized by, The battery cell uncoiling device comprises the battery cell uncoiling device according to any one of claims 1-14. The battery cell uncoiling device comprises the battery cell uncoiling device according to any one of claims 1-14.

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