Battery cell recycling apparatus and battery cell recycling method

Abstract

The application discloses a kind of battery recovery equipment and battery recovery method, battery recovery equipment includes clamping assembly, pole piece separation mechanism, diaphragm separation mechanism, tumble hopper, rotating assembly and receiving tray, clamping assembly is used to make battery reverse roll out, pole piece separation mechanism is used to make first pole piece and first diaphragm separate, the first diaphragm separation component of diaphragm separation mechanism is used to make first diaphragm and second pole piece separate, the second diaphragm separation component of diaphragm separation mechanism is used to make second diaphragm and second pole piece separate, tumble hopper includes tumble main body part and tumble guide portion, in vertical direction, tumble guide portion is gradually inclined from tumble main body part to the direction close to pole piece separation mechanism, to make battery can be along tumble guide portion reverse roll tumble to tumble main body part when battery falls from clamping assembly to tumble guide portion, and maintain reverse roll tumble, rotating assembly is used to make battery from clamping assembly release can slide in receiving tray and slide to tumble guide portion.

Description

Technical Field

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

[0002] In related technologies, a common recycling method for square battery cells is to use anti-winding equipment to separate and recycle the positive electrode, negative electrode, and separator of the scrapped battery cells.

[0003] In actual separation and recycling processes, gripper assemblies are typically used to hold the rolled-up battery cells and rotate them to unwind them, separating the positive electrode, negative electrode, and separator. The separated positive electrode, negative electrode, and separator are then wound up separately. However, because the battery cells are square in shape, the linear speed of the unwinding process is constantly changing. This causes the unwinding speed to be unable to match the moving speed of the positive electrode, making it prone to breakage and interrupting recycling. This necessitates frequent manual intervention in automated production, impacting the battery cell recycling efficiency. Summary of the Invention

[0004] This invention discloses a battery cell recycling device and a battery cell recycling method, which can solve the problem of electrode breakage during the separation and recycling process.

[0005] To achieve the above objectives, in a first aspect, the present invention discloses a battery cell recycling device, which is used to separate and recycle a first electrode, a second electrode, a first diaphragm, and a second diaphragm of a battery cell, wherein the first electrode, the first diaphragm, the second electrode, and the second diaphragm are stacked in sequence.

[0006] The battery cell recycling equipment includes:

[0007] A clamping assembly for rotatably clamping the battery cell and for driving the battery cell to rotate so that the battery cell is unrolled.

[0008] An electrode separation mechanism is used to separate the first electrode and the first separator of the unfolded portion of the battery cell.

[0009] A diaphragm separation mechanism is located below the electrode separation mechanism. The diaphragm separation mechanism includes a first diaphragm separation component and a second diaphragm separation component. The first diaphragm separation component is used to separate the first diaphragm and the second electrode in the remaining part of the battery cell. The second diaphragm separation component is used to separate the second diaphragm and the second electrode in the remaining part of the battery cell. The remaining part of the battery cell is configured as: the first diaphragm after the first electrode is separated from the first diaphragm, the second electrode, and the second diaphragm.

[0010] The tumbling bucket includes a tumbling main body and a tumbling guide connected to each other. The tumbling guide is located between the tumbling main body and the electrode separation mechanism. In the vertical direction, the tumbling guide is gradually inclined from the tumbling main body toward the electrode separation mechanism so that the battery cell released from the clamping assembly tumbles to the tumbling main body for dewinding and tumbling.

[0011] A rotating assembly, disposed between the clamping assembly and the tumbling main body, and in the vertical direction, the rotating assembly is higher than the tumbling guide portion; and

[0012] The receiving tray has one end connected to the rotating assembly and the other end movably abutting against the tumbling guide. It can disengage from the tumbling guide under the rotation of the rotating assembly, so that when the battery cell falls from the clamping assembly to the tumbling guide, the battery cell can be anti-wound and tumbled along the tumbling guide to the tumbling main body and maintain anti-wound tumbling.

[0013] In the battery cell recycling equipment provided in this application, a tumbling bucket is provided below the clamping assembly. After the electrode separation mechanism separates the first electrode and the first diaphragm, the clamping assembly releases the battery cell and feeds it into the tumbling bucket. The battery cell then unwinds by naturally tumbling under its own weight and the traction force of the first and second diaphragms. This avoids the situation where the linear velocity of the battery cell when it is rotated by the clamping assembly is inconsistent with the linear velocity of the first electrode. This solves the problem of the first electrode breaking due to the mismatch between the linear velocity of the battery cell when it is rotated and unwound by the linear velocity of the first electrode.

[0014] Based on the above design, this application further configures the tumbling bucket as a structure including a tumbling main body and a tumbling guide. A rotating component and a receiving tray are also provided above the tumbling main body. The battery cell released from the clamping component first falls onto the receiving tray, and then the rotating component drives the receiving tray to rotate, allowing the battery cell to slide smoothly down the receiving tray to the tumbling guide. Then, it smoothly tumbles along the tumbling guide to the tumbling main body for reverse winding. This ensures the falling posture of the battery cell, prevents the battery cell from getting stuck in the tumbling bucket, and allows the battery cell to tumble in the tumbling bucket, thereby effectively solving the problem of easy strip breakage during electrode reverse winding.

[0015] As an optional implementation, in an embodiment of the first aspect of the present invention, the tilt angle θ formed by the tumbling guide and the horizontal direction satisfies the following relationship:

[0016] θ>arctan((L / 2) / (H / 2))=arctan(L / H);

[0017] Where L is the width of the battery cell and H is the thickness of the battery cell.

[0018] When the above relationship is satisfied, the center of gravity (point of application of gravity) of the battery cell can generate a tilting moment on the edge of the support surface of the roll guide, so that the battery cell rolls on the roll guide without slipping.

[0019] As an optional implementation, in an embodiment of the first aspect of the present invention, the electrode separation mechanism includes an electrode adsorption assembly, which is movably disposed on one side of the tumbling bucket. The electrode adsorption assembly is used to adsorb the first electrode of the unfolded portion of the battery cell and to drive the first electrode to move so as to separate the first electrode from the first separator.

[0020] Compared to using a clamping component to pinch the first electrode, the first electrode is adsorbed by an electrode adsorption component, allowing it to move together with the adsorption component. This achieves separation between the first electrode and the first diaphragm, avoiding damage to the first electrode, ensuring its integrity, and facilitating its direct recycling after recovery.

[0021] As an optional implementation, in an embodiment of the first aspect of the present invention, the electrode separation mechanism further includes a vacuum belt assembly disposed on the side of the electrode adsorption assembly away from the tumbling bucket. The vacuum belt assembly is used to adsorb the first electrode adsorbed by the electrode adsorption assembly and to transport the first electrode to the electrode recycling area.

[0022] Since the adsorption area of ​​the vacuum belt assembly is usually larger than that of the electrode vacuum suction cup, it can increase the contact area between the electrode separation mechanism and the first electrode, improve the connection stability between the electrode separation mechanism and the first electrode, and facilitate the electrode separation mechanism to stably transport the first electrode to the electrode recycling area for recycling; it can also use the vacuum belt assembly to adsorb and flatten the first electrode, so as to facilitate the subsequent dust removal process.

[0023] As an optional implementation, in an embodiment of the first aspect of the present invention, the electrode recovery area is located below the vacuum belt assembly in the vertical direction; the vacuum belt assembly includes an electrode adsorption area and an electrode release area connected to each other, the electrode adsorption area is used to adsorb the first electrode adsorbed by the electrode adsorption assembly, and the electrode release area is used to release the first electrode adsorbed by the electrode adsorption area, so that the first electrode detaches from the vacuum belt assembly and falls into the electrode recovery area.

[0024] Compared to using a clamping component to pinch the first electrode to detach it from the vacuum belt assembly, dividing the vacuum belt assembly into an electrode adsorption area and an electrode release area allows the vacuum belt assembly to maintain adsorption force to transport the first electrode to the electrode recycling area. It also eliminates the need for a clamping component to pinch the first electrode to detach it from the vacuum assembly, thus avoiding damage to the first electrode, ensuring its integrity, and facilitating its direct recycling.

[0025] As an optional implementation, in an embodiment of the first aspect of the present invention, the electrode adsorption area is at least partially formed on the bottom surface of the vacuum belt assembly in the vertical direction, and the electrode release area is formed on the bottom surface of the vacuum belt assembly in the vertical direction. The cell recycling device further includes a support roller, which is disposed below the electrode release area in the vertical direction. The support roller is used to support the first electrode released from the electrode release area, so as to avoid the first electrode being pulled away from the electrode adsorption as the weight of the first electrode in the electrode recycling area increases. This avoids the vacuum belt assembly being unable to adsorb and transport the first electrode, thereby ensuring that the first electrode can be successfully separated from the first diaphragm for recycling.

[0026] As an optional implementation, in an embodiment of the first aspect of the present invention, the cell recycling equipment further includes a dust removal device, which is disposed above and / or below the vacuum belt assembly in the vertical direction. The dust removal device is used to remove impurities on the surface of the first electrode sheet adsorbed by the vacuum belt assembly, so that the surface of the first electrode sheet can be kept clean, which is conducive to the direct recycling of the first electrode sheet after recycling, reducing the probability of short circuit in the cell made from the recycled first electrode sheet, thereby reducing the scrap rate of the cell and saving costs.

[0027] Furthermore, the first electrode is flattened using a vacuum belt assembly. That is, after the first electrode is flattened on the vacuum belt assembly, the surface of the first electrode is cleaned by a dust removal device. After cleaning, it is directly collected in the first electrode collection box. This effectively removes impurities from the surface of the first electrode, resulting in better dust removal. At the same time, compared to the method of dust removal after the first electrode enters the first electrode collection box, setting a dust removal device above or below the vacuum belt assembly can remove dust from the first electrode while recovering it, which is more efficient.

[0028] As an optional implementation, in an embodiment of the first aspect of the present invention, the vacuum belt assembly includes a first vacuum belt and a second vacuum belt. The first vacuum belt is used to adsorb the first electrode adsorbed by the electrode adsorption assembly. The second vacuum belt and the first vacuum belt are partially spaced apart and stacked in the vertical direction, so that the second vacuum belt is used to adsorb the first electrode adsorbed by the first vacuum belt and to transport the first electrode to the electrode recycling area. The dust removal device includes a first dust removal component and a second dust removal component. The first dust removal component is disposed above one of the first vacuum belt and the second vacuum belt, and the second dust removal component is disposed below the other of the first vacuum belt and the second vacuum belt. This allows for dust removal from both surfaces of the first electrode, resulting in a better dust removal effect.

[0029] As an optional implementation, in the embodiment of the first aspect of the present invention, the first electrode is a positive electrode. Since this application typically uses aluminum foil as the main material for the positive electrode and copper foil as the main material for the negative electrode, and aluminum foil is more valuable than copper foil, this application uses an electrode adsorption assembly and a vacuum belt assembly to adsorb and flatten the positive electrode. After the positive electrode is flattened on the vacuum belt assembly, a dust removal device is used to clean the surface of the positive electrode, ensuring that the positive electrode is kept as undamaged and clean as possible for recycling and reuse, thus increasing its recycling value.

[0030] As an optional implementation, in an embodiment of the first aspect of the present invention, the battery cell recycling equipment further includes a guide roller, which is disposed on the side of the tumbling guide portion away from the tumbling main body portion, and the guide roller is higher than the tumbling guide portion in the vertical direction. The guide roller is used to conduct and support the battery cell unfolding portion, prevent the battery cell unfolding portion from contacting the highest point of the tumbling guide portion in the vertical direction, reduce the friction between the battery cell unfolding portion and the tumbling guide portion, avoid damage to the battery cell unfolding portion, and thereby avoid interruption of the recycling of the subsequent first electrode, first diaphragm, second electrode and second diaphragm, thus affecting the recycling process.

[0031] As an optional implementation, in an embodiment of the first aspect of the present invention, the number of guide rollers is multiple, and the multiple guide rollers are arranged at intervals along the moving direction of the electrode adsorption assembly. Among the multiple guide rollers, the guide roller closest to the tumbling guide in the moving direction of the electrode adsorption assembly is used to conduct and support the unfolded part of the battery cell, and the remaining guide rollers are used to conduct and support the first electrode after it has separated from the first diaphragm.

[0032] In this way, the friction between the unfolded part of the cell and the tumbling guide can be reduced by using the guide roller closest to the tumbling guide. The other guide rollers can also support the first electrode sheet, preventing the first electrode sheet from breaking due to its weight.

[0033] As an optional implementation, in an embodiment of the first aspect of the present invention, the battery cell recycling device further includes a first limiting roller and a second limiting roller. The first limiting roller and the second limiting roller are both located above the diaphragm separation mechanism in the vertical direction, and the first limiting roller and the second limiting roller are arranged at intervals along the moving direction of the electrode separation mechanism. The gap between the first limiting roller and the second limiting roller is used for the passage of the remaining part of the battery cell, and the first limiting roller and the second limiting roller can approach each other to push the remaining part of the battery cell to move, thereby adjusting the position of the remaining part of the battery cell to ensure that the remaining part of the battery cell falls smoothly between the first diaphragm separation assembly and the second diaphragm separation assembly, thereby ensuring that the first diaphragm separation assembly can smoothly act on the first diaphragm to separate the first diaphragm and the second electrode, and ensuring that the second diaphragm separation assembly can smoothly act on the second diaphragm to separate the second diaphragm and the second electrode.

[0034] As an optional implementation, in an embodiment of the first aspect of the present invention, the first membrane separation component includes a movably disposed first membrane adsorption component. The first membrane adsorption component is used to adsorb the first membrane in the remaining part of the battery cell and to drive the first membrane to move so as to separate the first membrane and the second electrode. Compared with the method of using a clamping component to pinch the first membrane, the first membrane adsorption component adsorbs the first membrane so that the first membrane can move together with the first membrane adsorption component, thereby realizing the separation between the first membrane and the second electrode, which can avoid damage to the first membrane and ensure the integrity of the first membrane.

[0035] And / or, the second membrane separation assembly includes a movably disposed second membrane adsorption assembly. The second membrane adsorption assembly is used to adsorb the second membrane in the remaining part of the battery cell and to drive the second membrane to move so that the second membrane is separated from the second electrode. Compared with the method of using a clamping assembly to pinch the second membrane, the second membrane adsorption assembly adsorbs the second membrane so that the second membrane can move together with the second membrane adsorption assembly, thereby realizing the separation between the second membrane and the second electrode. This can avoid damage to the second membrane and ensure the integrity of the second membrane.

[0036] As an optional implementation, in an embodiment of the first aspect of the present invention, the first diaphragm separation assembly further includes a rotatably disposed first diaphragm receiving assembly. The first diaphragm receiving assembly is used to wind and receive the first diaphragm that has been taken away by the first diaphragm adsorption assembly. In this way, the traction force of the first diaphragm receiving assembly on the first diaphragm provides the power for the cell to tumble in the tumbling body, reducing the pulling force of the first electrode on the cell, thereby reducing the traction force of the electrode separation mechanism on the first electrode, so as to avoid the situation where the first electrode is broken by the electrode separation mechanism.

[0037] And / or, the second diaphragm separation assembly further includes a rotatably disposed second diaphragm receiving assembly, which is used to wind and collect the second diaphragm that has been taken away by the second diaphragm adsorption assembly. In this way, the traction force of the second diaphragm receiving assembly on the second diaphragm provides the power for the cell to tumble in the tumbling body, reducing the pulling force of the first electrode on the cell, thereby reducing the traction force of the electrode separation mechanism on the first electrode, so as to avoid the first electrode being broken by the electrode separation mechanism.

[0038] As an optional implementation, in an embodiment of the first aspect of the present invention, the battery cell recycling equipment further includes an electrostatic eliminator, which is used to eliminate static electricity in the battery cell unfolded portion before the first electrode and the first diaphragm are separated, thereby ensuring that the first electrode can be smoothly separated from the first diaphragm under the action of the electrode separation mechanism, ensuring that the first diaphragm can be smoothly separated from the second electrode under the action of the first diaphragm separation assembly, and ensuring that the second diaphragm can be smoothly separated from the second electrode under the action of the second diaphragm separation assembly.

[0039] In a second aspect, the present invention discloses a battery cell recycling method using the battery cell recycling equipment described in the first aspect above, the battery cell recycling method comprising:

[0040] The clamping assembly holds the battery cell;

[0041] The clamping assembly drives the battery cell to rotate so as to unroll and unfold the battery cell.

[0042] The electrode separation mechanism separates the first electrode and the first separator in the unfolded part of the cell, and the remaining part of the cell falls between the first separator separation assembly and the second separator separation assembly;

[0043] The first diaphragm separation assembly separates the first diaphragm and the second electrode in the remaining portion of the battery cell;

[0044] The second diaphragm separation assembly separates the second diaphragm and the second electrode in the remaining portion of the cell;

[0045] The clamping assembly releases the battery cell into the receiving tray;

[0046] The rotating component drives the receiving tray to rotate, allowing the battery cell to slide to the tumbling guide and then tumble from the tumbling guide to the tumbling main body for reverse winding and tumbling.

[0047] The above-mentioned cell recycling method has two advantages. First, after the electrode separation mechanism separates the first electrode and the first diaphragm, the clamping assembly releases the cell and feeds it into the tumbling hopper. The cell then unwinds naturally by using its own weight and the traction force of the first and second diaphragms, avoiding the mismatch between the linear velocity of the cell and the linear velocity of the first electrode when the clamping assembly rotates. This solves the problem of the first electrode breaking due to the mismatch between the linear velocity of the cell and the linear velocity of the first electrode. Second, the cell released from the clamping assembly first falls onto the receiving tray, and then the rotating assembly drives the receiving tray to rotate, allowing the cell to slide smoothly down the receiving tray to the tumbling guide. Then, it smoothly tumbles along the tumbling guide to the tumbling main body for reverse winding, ensuring the cell's falling posture and preventing it from getting stuck in the tumbling hopper. This allows the cell to tumble in the tumbling hopper, effectively solving the problem of easy breakage during electrode reverse winding.

[0048] As an optional implementation, in an embodiment of the second aspect of the present invention, the battery cell recycling equipment further includes an electrostatic elimination device;

[0049] After the step of the clamping assembly rotating the battery cell to unwind and unfold the battery cell, and before the step of the electrode separation mechanism separating the first electrode and the first separator in the unfolded portion of the battery cell, the battery cell recycling method further includes:

[0050] The static electricity elimination device eliminates static electricity in the unfolded part of the battery cell.

[0051] Before the first electrode and the first diaphragm are separated, static electricity in the unfolded part of the cell is eliminated. This ensures that the first electrode can be smoothly separated from the first diaphragm under the action of the electrode separation mechanism, that the first diaphragm can be smoothly separated from the second electrode under the action of the first diaphragm separation assembly, and that the second diaphragm can be smoothly separated from the second electrode under the action of the second diaphragm separation assembly.

[0052] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0053] The battery cell recycling equipment and method provided in this invention have a tumbling bucket below the clamping assembly. After the electrode separation mechanism separates the first electrode and the first diaphragm, the clamping assembly releases the battery cell and feeds it into the tumbling bucket. The battery cell then unwinds by naturally tumbling under its own weight and the traction force of the first and second diaphragms. This avoids the situation where the linear velocity of the battery cell when it is rotated by the clamping assembly is inconsistent with the linear velocity of the first electrode. This solves the problem of the first electrode breaking due to the mismatch between the linear velocity of the battery cell when it is rotated by the clamping assembly and the linear velocity of the first electrode.

[0054] Based on the above design, this application further configures the tumbling bucket as a structure including a tumbling main body and a tumbling guide. A rotating component and a receiving tray are also provided above the tumbling main body. The battery cell released from the clamping component first falls onto the receiving tray, and then the rotating component drives the receiving tray to rotate, allowing the battery cell to slide smoothly down the receiving tray to the tumbling guide. Then, it smoothly tumbles along the tumbling guide to the tumbling main body for reverse winding. This ensures the falling posture of the battery cell, prevents the battery cell from getting stuck in the tumbling bucket, and allows the battery cell to tumble in the tumbling bucket, thereby effectively solving the problem of easy strip breakage during electrode reverse winding. Attached Figure Description

[0055] To more clearly illustrate the technical solutions in the embodiments of the present invention, the accompanying drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0056] Figure 1 This is a simplified structural diagram of the battery cell recycling equipment disclosed in the embodiments of the present invention, including a clamping assembly and an electrode separation mechanism;

[0057] Figure 2 This is a simplified diagram of the battery cell recycling equipment disclosed in the embodiments of the present invention, which includes a clamping assembly and an electrode separation mechanism, and the electrode separation mechanism adsorbs the first electrode.

[0058] Figure 3 This is a simplified structural diagram of the battery cell recycling equipment disclosed in this embodiment of the invention, showing the separation of the first electrode and the first separator.

[0059] Figure 4 This is a simplified structural diagram of the battery cell recycling equipment disclosed in the embodiments of the present invention, which separates the first electrode and the first diaphragm, the first diaphragm and the second electrode, and the second diaphragm and the second electrode.

[0060] Figure 5This is a simplified structural diagram of the battery cell recycling equipment disclosed in the embodiments of the present invention, which separates the first electrode and the first diaphragm, separates the first diaphragm and the second electrode, separates the second diaphragm and the second electrode, and winds the first diaphragm and the second diaphragm onto the first and second receiving rollers.

[0061] Figure 6 The battery cell recycling equipment disclosed in this embodiment of the invention also includes a simplified structural diagram of a tumbling bucket;

[0062] Figure 7 This is a mechanical analysis model diagram of the battery cell disposed on the tumbling guide of the tumbling bucket, as disclosed in an embodiment of the present invention;

[0063] Figure 8 This is a three-dimensional structural diagram of the battery cell recycling equipment disclosed in the embodiments of the present invention from a first-view perspective;

[0064] Figure 9 yes Figure 8 A magnified view of point A in the image;

[0065] Figure 10 This is a three-dimensional structural diagram of the battery cell recycling equipment disclosed in an embodiment of the present invention from a second perspective;

[0066] Figure 11 This is an exploded structural diagram of the first vacuum belt disclosed in an embodiment of the present invention;

[0067] Figure 12 This is a schematic diagram of the first exploded structure of the second vacuum belt disclosed in an embodiment of the present invention;

[0068] Figure 13 This is a schematic diagram of the second exploded structure of the second vacuum skin disclosed in the embodiments of the present invention;

[0069] Figure 14 This is a three-dimensional structural diagram of the battery cell recycling equipment disclosed in the embodiments of the present invention from a third-person perspective;

[0070] Figure 15 This is a three-dimensional structural schematic diagram of the diaphragm separation mechanism, the first limiting roller, and the second limiting roller disclosed in the embodiments of the present invention;

[0071] Figure 16 yes Figure 15 A magnified view of point B in the image;

[0072] Figure 17 yes Figure 15 A magnified view of point C in the image;

[0073] Figure 18 This is a schematic flowchart of the battery cell recycling method disclosed in an embodiment of the present invention.

[0074] Explanation of main figure symbols

[0075] 100 - Cell recycling equipment; 10 - Clamping assembly; 11 - Electrode separation mechanism; 111 - Electrode adsorption assembly; 111a - First driving mechanism; 111b - First vacuum suction cup; 112 - Vacuum belt assembly; 112a - Electrode adsorption area; 112b - Electrode release area; 112c - First vacuum belt; 112d - Second vacuum belt; 1121 - Vacuum box; 1121a - First end; 1121b - Second end 1121c - First air vent; 1122 - Conveyor belt; 1122a - Second air vent; 1123 - Rotary motor; 1124 - Rotating shaft; 12 - Diaphragm separation mechanism; 121 - First diaphragm separation assembly; 1211 - First diaphragm adsorption assembly; 1211a - Second drive mechanism; 1211b - Second vacuum suction cup; 1212 - First diaphragm receiving assembly; 1212a - Second rotating component; 1212b - ... Two connecting rods; 1212c - First receiving roller; 1212d - Second receiving roller; 122 - Second diaphragm separation assembly; 1221 - Second diaphragm adsorption assembly; 1222 - Second diaphragm receiving assembly; 13 - Tumbling bucket; 131 - Tumbling main body; 132 - Tumbling guide; 14 - Rotating assembly; 141 - First rotating component; 142 - First connecting rod; 15 - Receiving tray; 16 - Static elimination device; 17a - First 17b-Second electrode collection box; 18-Support roller; 19-Dust removal device; 191-First dust removal assembly; 192-Second dust removal assembly; 20-Impurity collection box; 21-Sensor; 22-Correction assembly; 221-First correction roller; 222-Second correction roller; 23-Guide roller; 24-First limiting roller; 25-Second limiting roller; 26-First diaphragm collection box; 27-Second diaphragm collection box;

[0076] 200 - Cell; 201 - First electrode; 202 - First separator; 203 - Second electrode; 204 - Second separator. Detailed Implementation

[0077] To make the objectives, technical solutions, and advantages of this application clearer, the exemplary embodiments of this application will be clearly and completely described below with reference to the accompanying drawings of the exemplary embodiments. Obviously, the described exemplary embodiments are only some embodiments of this application, and not all embodiments. That is, the specific embodiments described herein are merely used to explain this application and are not intended to limit this application.

[0078] It should be noted that the brief descriptions of terminology used in this application are merely for the purpose of facilitating understanding of the embodiments described below, and are not intended to limit the embodiments of this application. Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs. The terminology used herein in the specification of this application is for the purpose of describing particular embodiments only and is not intended to limit this application.

[0079] In the description of this application, it should be understood that the terms "center", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They 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. Therefore, they should not be construed as limitations on this application.

[0080] The terms "first," "second," etc., used in this application may be used herein to describe various elements, but these elements are not limited by these terms. These terms are used only to distinguish one element from another. For example, without departing from the scope of this application, a first diaphragm separation assembly may be referred to as a second diaphragm separation assembly, and similarly, a second diaphragm separation assembly may be referred to as a first diaphragm separation assembly. Both the first diaphragm separation assembly and the second diaphragm separation assembly are separation components, but they are not the same separation component.

[0081] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this application, unless otherwise stated, "a plurality of" means two or more.

[0082] 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.

[0083] In the description of this application, it should be noted that the singular forms of "a," "an," and "the" may also include the plural forms, unless the context clearly indicates otherwise. It should also be understood that terms such as "comprising / including" or "having" specify the presence of the stated features, integrals, steps, operations, components, parts, or combinations thereof, but do not preclude the possibility of the presence or addition of one or more other features, integrals, steps, operations, components, parts, or combinations thereof.

[0084] In addition, the term "and / or" as used in this specification includes any and all combinations of the related listed items. For example, A and / or B can mean: A alone, A and B together, or B alone. That is, the term "and / or" as used in this specification includes any and all combinations of the related listed items.

[0085] Initially, the common method for recycling square battery cells was to manually separate the positive electrode, negative electrode, and separator of the scrapped cells. The separated positive electrode, negative electrode, and separator were then fed into a shredder for shredding. The shredded material was then fed into a specialized crusher for further crushing. The crushed material was then fed into an analyzer for initial sorting. The mixture of metal and electrode powder was fed into a linear screen for sieving. The upper layer produced metal, the lower layer produced electrode powder, and the middle layer produced a mixture of metal and electrode powder. The mixture of metal and electrode powder was then fed into a grinder for further grinding. The ground material was then fed into a collector and discharged to a vibrating screen for further sieving and recycling.

[0086] However, manually separating the positive and negative electrode sheets requires a lot of manpower, and the positive and negative electrode sheets will inevitably contaminate each other during the manual separation process.

[0087] For example, when copper (Cu) and other metallic impurities are present in the positive electrode recyclable material, this portion of the positive electrode recyclable material cannot be directly repaired or recycled into the positive electrode material, and its recycling value is greatly reduced. This is because once positive electrode recyclable material mixed with copper and other metallic impurities is used directly, when the voltage during the battery formation stage reaches the redox potential of these metallic impurities, these metallic impurities will first oxidize at the positive electrode and then be reduced at the negative electrode. When the metallic elements at the negative electrode accumulate to a certain extent, the hard edges of the deposited metal will pierce the separator, causing the battery to self-discharge. Self-discharge has a fatal impact on lithium-ion batteries, so it is particularly important for the lithium battery recycling industry to prevent the introduction of metallic impurities at the source.

[0088] In order to overcome the above problems, related technologies use anti-winding equipment to separate the positive electrode, negative electrode, and separator of the waste battery cell. However, during the anti-winding process, the positive and negative electrode sheets are prone to breakage, which leads to the interruption of anti-winding. This requires frequent manual intervention in automatic production, which affects the anti-winding speed of the anti-winding equipment, resulting in low recycling efficiency of the battery cell. Moreover, there is still a situation where the positive and negative electrodes are contaminated with each other.

[0089] Furthermore, in the actual separation and recycling process, the gripper assembly of the anti-winding equipment typically clamps the rolled-up battery cells and drives them to rotate and unwind, separating the positive electrode, negative electrode, and separator. The separated positive electrode, negative electrode, and separator are then wound up separately. However, because the battery cells are square in shape, the linear speed of the anti-winding process is constantly changing. This causes the linear speed of the anti-winding to be unable to match the moving speed of the positive electrode, making the positive electrode prone to breakage and leading to recycling interruptions. This necessitates frequent manual intervention in automated production, impacting the battery cell recycling efficiency.

[0090] In view of this, the researchers of this application have set up a tumbling bucket below the gripper assembly. After the electrode separation mechanism drives the first electrode of the unfolded part of the battery cell to move, so that the first electrode and the first separator are separated, the gripper assembly releases the battery cell and feeds the battery cell into the tumbling bucket. The first separator separation assembly separates the first separator and the second electrode, and the second separator separation assembly separates the second separator and the second electrode. The battery cell is unwound by tumbling with its own weight and the traction force of the first and second separators. This solves the problem that the linear speed of the battery cell unwinding is mismatched with the moving speed of the positive electrode, which makes the positive electrode very easy to break.

[0091] Meanwhile, the researchers of this application also discovered during the experiment that during the process of the battery cell falling from the gripper assembly into the tumbling bucket, the battery cell is prone to getting stuck in the tumbling bucket and cannot tumble, which will still cause the positive electrode sheet to break easily, thus leading to the interruption of recycling. This requires frequent manual intervention to automatically straighten the position of the battery cell in the tumbling bucket so that the battery cell can tumble in the tumbling bucket, which will result in a relatively low recycling efficiency of the battery cell.

[0092] In view of this, the researchers of this application have set up a rotating component and a receiving tray above the tumbling bucket to control the posture of the battery cell after it falls. Specifically, the battery cell released from the gripper component falls to the receiving tray, and the rotating component drives the receiving tray to rotate so that the battery cell can slide smoothly into the tumbling bucket under the action of the receiving tray. This can ensure the falling posture of the battery cell, prevent the battery cell from getting stuck in the tumbling bucket, and allow the battery cell to tumble in the tumbling bucket, thereby solving the problem of easy strip breakage during the reverse winding of the electrode sheet.

[0093] The technical solutions of some embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0094] Please see Figure 1 This application discloses a battery cell recycling device, which is used to separate and recycle the first electrode 201, the first diaphragm 202, the second electrode 203, and the second diaphragm 204 of a battery cell 200, wherein the first electrode 201, the first diaphragm 202, the second electrode 203, and the second diaphragm 204 are stacked in sequence.

[0095] Please see Figures 1 to 3 The battery cell recycling device 100 provided in this application embodiment includes a clamping assembly 10, an electrode separation mechanism 11, and a diaphragm separation mechanism 12.

[0096] The clamping assembly 10 in this application is used to rotatably clamp the battery cell 200 and to drive the battery cell 200 to rotate so that the battery cell 200 is unrolled and unfolded to facilitate subsequent processes, such as facilitating the electrode separation mechanism 11 in subsequent processes to adsorb, pinch or clamp the first electrode 201 of the unfolded part of the battery cell so as to separate the first electrode 201 and the first diaphragm 202.

[0097] Optionally, the clamping assembly 10 includes a robotic arm (not shown) and a motion mechanism (not shown) connected to the robotic arm. The robotic arm is used to rotatably clamp the battery cell and to drive the battery cell to rotate so that the rolled battery cell is unrolled. The motion mechanism is used to drive the robotic arm to move along at least one degree of freedom. For example, in a three-dimensional Cartesian coordinate system, x, y, and z constitute the three coordinate axes of the three-dimensional Cartesian coordinate system, where the z direction is consistent with the vertical direction. The motion mechanism can drive the robotic arm to move along one of the x, y, and z directions to adjust the position of the battery cell and ensure the smooth progress of subsequent processes, such as ensuring that the clamping assembly 10 releases the battery cell and smoothly loads the battery cell into the tumbling bucket 13.

[0098] In this application, the electrode separation mechanism 11 is used to separate the first electrode 201 and the first separator 202 of the battery cell unfolded portion; the separator separation mechanism 12 includes a first separator separation component 121 and a second separator separation component 122. The first separator separation component 121 is used to separate the first separator 202 and the second electrode 203 of the battery cell unfolded portion, and the second separator separation component 122 is used to separate the second separator 204 and the second electrode 203 of the battery cell unfolded portion. This allows the first electrode 201, the first separator 202, the second electrode 203, and the second separator 204 to be separated from each other.

[0099] It is known, such as Figure 1 As shown, the coiled battery cell 200 held on the clamping assembly 10 is unwound and unfolded, with the front end of the battery cell 200 unfolding, as shown. Figure 2 and Figure 3 As shown, the electrode separation mechanism 11 separates the first electrode 201 and the first separator 202 of the unfolded portion of the battery cell, forming the first electrode 201 and the remaining portion of the battery cell consisting of the unseparated first separator 202, the second electrode 203, and the second separator 204 (that is, the first separator 202, the second electrode 203, and the second separator 204 after the separation of the first electrode 201 and the first separator 202). The remaining portion of the battery cell hangs down naturally and falls between the first separator separation assembly 121 and the second separator separation assembly 122, and then... Figure 4 and Figure 5 As shown, the first separator 202 and the second electrode 203 in the remaining part of the battery cell are separated by the first separator separation component 121, and the second separator separation component 122 separates the second separator 204 and the second electrode 203. The second electrode 203 naturally hangs down into the second electrode collection box 17b under its own weight, thus avoiding winding and coiling the second electrode 203 and reducing the risk of the second electrode 203 breaking. This is because after the second electrode 203 is wound into a coiled battery cell, stress concentration will occur at the bending position of the second electrode 203. If it is unwound and rewound in the reverse direction, the stress concentration at the bending position of the second electrode 203 will be aggravated, making the second electrode 203 prone to breakage.

[0100] Because the second electrode 203 can be unwound by wrapping it with two diaphragms (i.e., the first diaphragm 202 and the second diaphragm 204) during the above process, the mutual contamination of the first electrode 201 and the second electrode 203 can be avoided.

[0101] Please see Figure 5 and Figure 6The battery cell recycling device 100 provided in this application embodiment also includes a tumbling bucket 13. The tumbling bucket 13 can be disposed below the clamping assembly 10 in the vertical direction or above the clamping assembly 10 in the vertical direction. When the tumbling bucket 13 is disposed below the clamping assembly 10 in the vertical direction, the clamping assembly 10 can move upward to be located above the tumbling bucket 13 in the vertical direction, so that when the clamping assembly 10 releases the battery cell, the battery cell can fall into the tumbling bucket 13.

[0102] Furthermore, the tumbling bucket 13 includes a tumbling main body 131 and a tumbling guide 132 connected to each other. The tumbling guide 132 is located between the tumbling main body 131 and the electrode separation mechanism 11. In the vertical direction, the tumbling guide 132 is gradually inclined from the tumbling main body 131 toward the electrode separation mechanism 11, so that the tumbling guide 132 can cooperate with the tumbling main body 131 to enable the battery cell released from the self-clamping assembly 10 to be de-wound and tumbled. That is, the inclined tumbling guide 132 can enable the battery cell to be de-wound and tumbled along the tumbling guide 132 to the tumbling main body 131 when the battery cell falls from the self-clamping assembly 10 to the tumbling guide 132, and maintain the de-wound and tumbling on the tumbling main body.

[0103] That is, when the clamping assembly 10 releases the battery cell 200, the battery cell 200 falls to the tumbling guide 132. Since the tumbling guide 132 is gradually inclined from the tumbling main body 131 toward the electrode separation mechanism 11, the battery cell 200 can tumble along the tumbling guide 132 to the tumbling main body 131. At this time, the battery cell 200 uses its own weight and the traction force of the first diaphragm 202 and the second diaphragm 204 to perform a natural tumbling action to unwind, avoiding the situation where the linear velocity of the battery cell 200 when it is driven to rotate and reverse-wind by the clamping assembly 10 is inconsistent with the linear velocity of the first electrode 201. This solves the problem of the first electrode 201 breaking due to the mismatch between the linear velocity of the battery cell 200 when it is driven to rotate and reverse-wind by the clamping assembly 10 and the linear velocity of the first electrode 201.

[0104] Understandably, to ensure that the battery cell 200 does not slip on the rolling guide 132, the tilt angle of the rolling guide 132 can be adjusted until the battery cell rolls. Its mechanical model is as follows: Figure 7 As shown. When the center of gravity of the battery cell 200 exceeds the range of the support surface of the roll guide 132, the center of gravity (the point of application of gravity) of the battery cell 200 generates a tilting moment on the edge point of the support surface of the roll guide 132, causing the battery cell to start to roll. The tilt angle θ formed by the roll guide 132 and the horizontal direction satisfies the following relationship: θ>arctan((L / 2) / (H / 2))=arctan(L / H), where L is the width of the battery cell and H is the thickness of the battery cell.

[0105] Please see Figure 8 and Figure 9 The battery cell recycling device 100 provided in this application embodiment further includes a rotating assembly 14 and a receiving tray 15. The rotating assembly 14 is disposed between the clamping assembly and the tumbling main body 131, and in the vertical direction, the rotating assembly 14 is higher than the tumbling guide 132. One end of the receiving tray 15 is connected to the rotating assembly 14, and the other end of the receiving tray 15 is in movable contact with the tumbling guide 132. The other end of the receiving tray 15 can disengage from the tumbling guide 132 under the rotation of the rotating assembly 14, so that the battery cell released from the clamping assembly 10 can slide in the receiving tray 15 and slide to the tumbling guide 132.

[0106] That is, when the clamping component 10 releases the battery cell, the battery cell falls to the receiving tray 15. The rotating component 14 drives the receiving tray 15 to rotate, allowing the battery cell to slide smoothly down the receiving tray 15 to the tumbling guide part 132. Then, it smoothly tumbles along the tumbling guide part 132 to the tumbling main body part 131 for reverse winding and tumbling. This ensures the falling posture of the battery cell and prevents the battery cell from getting stuck in the tumbling bucket 13. It allows the battery cell to tumble in the tumbling bucket 13, thereby effectively solving the problem of easy strip breakage during the reverse winding of the electrode sheet.

[0107] For example, one end of the receiving tray 15 may be located above the rotating component 14 in the vertical direction or below the rotating component 14 in the vertical direction.

[0108] Optionally, the rotating assembly 14 includes a first rotating component 141 and a first connecting rod 142 connected to the first rotating component 141. The first connecting rod 142 is fixedly connected to one end of the receiving tray 15. The first rotating component 141 drives the first connecting rod 142 to rotate, thereby driving the receiving tray 15 to rotate, so that the other end of the receiving tray 15 disengages from the tumbling guide part 132. This allows the battery cell released from the self-clamping assembly 10 to slide in the receiving tray 15 and slide to the tumbling guide part 132, thereby controlling the posture of the battery cell after it falls. The first rotating component 141 can be a rotary cylinder or a rotary motor, etc.

[0109] In some embodiments, the rotating assembly 14 further includes a pressure regulating valve (not shown) for regulating the rotational speed of the first rotating component 141 to control the battery cell to slide slowly into the tumbling guide portion 132, thus ensuring the battery cell's falling posture.

[0110] During the unwinding process of the battery cell, the electrodes and separators (e.g., between the first electrode and the first separator, between the second electrode and the first separator, and between the second electrode and the second separator) will rub against each other and generate static electricity, which will cause the electrodes and separators to be unable to separate smoothly.

[0111] In some embodiments, the battery cell recycling equipment 100 further includes an electrostatic eliminator 16, which is used to eliminate static electricity in the deployed portion of the battery cell before the first electrode and the first separator are separated. This ensures that the first electrode can be smoothly separated from the first separator by the electrode separation mechanism 11, that the first separator can be smoothly separated from the second electrode by the first separator separation assembly 121, and that the second separator can be smoothly separated from the second electrode by the second separator separation assembly 122.

[0112] Optionally, the static eliminator 16 can be an ion air knife, a fixed device for eliminating static electricity. It can deliver static neutralizing ions to the target object to eliminate the static electricity generated by the friction between the electrode and the separator during the unwinding process of the battery cell, thereby ensuring that the electrode and the separator can be separated smoothly.

[0113] In some embodiments, such as Figure 8 and Figure 9 As shown, the electrode separation mechanism 11 may include an electrode adsorption assembly 111, which is movably disposed on one side of the tumbling bucket 13. The electrode adsorption assembly 111 is used to adsorb the first electrode of the unfolded part of the battery cell and to drive the first electrode to move, so as to separate the first electrode from the first separator. Compared with the method of using a clamping assembly to pinch the first electrode, by adsorbing the first electrode with the electrode adsorption assembly 111, the first electrode can move together with the electrode adsorption assembly 111, thereby realizing the separation between the first electrode and the first separator. This can avoid damage to the first electrode, ensure the integrity of the first electrode, and facilitate the direct recycling of the first electrode after recovery.

[0114] Optionally, the electrode adsorption assembly 111 includes a first driving mechanism 111a and a first vacuum suction cup 111b connected to the first driving mechanism 111a. The first vacuum suction cup 111b is used to adsorb the first electrode of the battery cell unfolded portion. The first driving mechanism 111a is used to drive the first vacuum suction cup 111b to move to the first electrode of the battery cell unfolded portion, adsorb the first electrode, and drive the first vacuum suction cup 111b with the adsorbed first electrode to move away from the tumbling bucket 13, so as to separate the first electrode and the first diaphragm.

[0115] For example, the first drive mechanism 111a may be a cylinder mechanism or a hydraulic cylinder mechanism, etc.

[0116] In some embodiments, such as Figure 8 and Figure 9As shown, the electrode separation mechanism 11 also includes a vacuum belt assembly 112. The vacuum belt assembly 112 is located on the side of the electrode adsorption assembly 111 away from the tumbling bucket 13. The vacuum belt assembly 112 is used to adsorb the first electrode adsorbed by the electrode adsorption assembly 111. That is, when the electrode adsorption assembly 111 adsorbs the first electrode and moves to the vacuum belt assembly 112, the electrode adsorption assembly 111 releases the first electrode so that the vacuum belt assembly 112 can adsorb the first electrode, or the adsorption force of the vacuum belt assembly 112 is controlled to be greater than the adsorption force of the electrode adsorption assembly 111, so that the vacuum belt assembly 112 adsorbs the first electrode from the electrode adsorption assembly 111. Furthermore, the vacuum belt assembly 112 is also used to transport the first electrode to the electrode recycling area.

[0117] Since the adsorption area of ​​the vacuum belt assembly 112 is usually larger than that of the first vacuum suction cup 111b, it can increase the contact area between the electrode separation mechanism 11 and the first electrode, improve the connection stability between the electrode separation mechanism 11 and the first electrode, and facilitate the electrode separation mechanism 11 to stably transport the first electrode to the electrode recycling area for recycling; it can also use the vacuum belt assembly 112 to adsorb and flatten the first electrode, so as to facilitate the subsequent dust removal process.

[0118] In some embodiments, the first vacuum suction cup 111b is rotatably connected to the first drive mechanism 111a. When the first vacuum suction cup 111b adsorbs the first electrode of the unfolded part of the battery cell, the first vacuum suction cup 111b rotates relative to the first drive mechanism 111a, so that the first electrode is located at the bottom or top of the first vacuum suction cup 111b in the vertical direction, so as to move the first electrode to the top or bottom of the vacuum belt assembly 112 in the vertical direction.

[0119] In some embodiments, such as Figure 8 and Figure 9 As shown, the battery cell recycling equipment 100 also includes a sensor 21 and a correction component 22. Both the sensor 21 and the correction component 22 are disposed between the tumbling hopper 13 and the vacuum belt assembly 112. The sensor 21 is used to sense the position of the first electrode sheet separated from the first diaphragm in the width direction of the vacuum belt assembly 112. The correction component 22 is used to move the first electrode sheet along the width direction of the vacuum belt assembly 112 when the sensor 21 detects a shift in the first electrode sheet. That is, when the sensor 21 detects a shift in the first electrode sheet relative to the vacuum belt assembly 112 in the width direction, the correction component 22 moves the first electrode sheet along the width direction of the vacuum belt assembly 112, adjusting its position to ensure it does not deviate, thus ensuring that the first electrode sheet can be adsorbed by the vacuum belt assembly 112 and transported to the electrode recycling area.

[0120] The width direction of the vacuum belt assembly 112 is perpendicular to the vertical direction and the moving direction of the electrode adsorption assembly 111.

[0121] In some embodiments, the correction assembly 22 includes a first correction roller 221 and a second correction roller 222 arranged at intervals along the vertical direction. The gap between the first correction roller 221 and the second correction roller 222 is used for the passage of the first electrode sheet after separation from the first diaphragm. At least one of the first correction roller 221 and the second correction roller 222 can move in the vertical direction. That is, only the first correction roller 221 can move in the vertical direction, only the second correction roller 222 can move in the vertical direction, or both the first correction roller 221 and the second correction roller 222 can move in the vertical direction, so that the first correction roller 221 and the second correction roller 222 can approach each other to clamp the first electrode sheet after separation from the first diaphragm. This allows the correction assembly 22 to clamp the first electrode sheet and move it along the width direction of the vacuum belt assembly 112 to adjust the position of the first electrode sheet. At the same time, the correction roller located below the first electrode sheet can also support the first electrode sheet to prevent the first electrode sheet from breaking due to the weight of the first electrode sheet.

[0122] Optionally, the first straightening roller 221 and / or the second straightening roller 222 can be moved in the vertical direction by a power mechanism such as a pneumatic cylinder mechanism or a hydraulic cylinder mechanism.

[0123] In some embodiments, the battery cell recycling equipment 100 further includes a guide roller 23, which is disposed on the side of the tumbling guide portion 132 away from the tumbling main body portion 131, and the guide roller 23 is higher than the tumbling guide portion 132 in the vertical direction, so that the guide roller 23 can be used to conduct and support the battery cell unfolding portion, prevent the battery cell unfolding portion from contacting the highest point of the tumbling guide portion 132 in the vertical direction, reduce the friction between the battery cell unfolding portion and the tumbling guide portion 132, avoid damage to the battery cell unfolding portion, and thus avoid interruption of the recycling of the subsequent first electrode, first diaphragm, second electrode and second diaphragm, which would affect the recycling.

[0124] Optionally, the number of guide rollers 23 can be multiple, such as two, three, four, five, etc. The multiple guide rollers 23 are arranged at intervals along a first preset direction. Among the multiple guide rollers 23, the guide roller 23 closest to the tumbling guide 132 in the moving direction of the electrode adsorption assembly 111 is used to conduct and support the unfolded portion of the battery cell, while the remaining guide rollers 23 are used to conduct and support the first electrode sheet after it has separated from the first diaphragm. This reduces friction between the unfolded portion of the battery cell and the tumbling guide 132 by using the guide roller 23 closest to it, and also supports the first electrode sheet by using the remaining guide rollers 23, preventing the first electrode sheet from breaking due to its weight.

[0125] In some embodiments, such as Figure 10 As shown, the electrode recovery area is located below the vacuum belt assembly 112 in the vertical direction. The vacuum belt assembly 112 may include an electrode adsorption area 112a and an electrode release area 112b connected to each other. The electrode adsorption area 112a is used to adsorb the first electrode adsorbed by the electrode adsorption assembly 111. The electrode release area 112b is located above the electrode recovery area in the vertical direction and is used to release the first electrode adsorbed by the electrode adsorption area 112a. That is, the first electrode is adsorbed by the adsorption area, but when it is transported to the electrode release area 112b, the first electrode is no longer adsorbed by the vacuum belt assembly 112, so that the first electrode can detach from the vacuum belt assembly 112 and fall to the electrode recovery area under its own gravity. That is, the first electrode is finally collected in a non-rolled manner, relying on gravity to hang naturally and recover to the electrode recovery area, avoiding the problem of belt breakage caused by secondary winding.

[0126] Compared to using a clamping component to pinch the first electrode to detach it from the vacuum belt assembly 112, dividing the vacuum belt assembly 112 into an electrode adsorption area 112a and an electrode release area 112b allows the vacuum belt assembly 112 to maintain adsorption force to transport the first electrode to the electrode recycling area, without the need for a clamping component to pinch the first electrode to detach it from the vacuum assembly. This avoids damage to the first electrode, ensures its integrity, and facilitates its direct recycling.

[0127] In summary, throughout the entire process of recycling the first electrode sheet, the first electrode sheet is picked up by adsorption force to avoid damage to it. Furthermore, the first electrode sheet is not wound or rolled up at any point, which helps to reduce the risk of breakage. This is because after the first electrode sheet is wound into a coiled cell, stress concentration occurs at the bending point of the first electrode sheet. If it is unwound and rewound in the reverse direction, the stress concentration at the bending point of the first electrode sheet will be aggravated, making the first electrode sheet more prone to breakage.

[0128] In some embodiments, the electrode recycling area is provided with a first electrode collection box 17a for collecting the first electrode released from the electrode release area 112b.

[0129] In some embodiments, such as Figure 10 As shown, the electrode adsorption area 112a is at least partially formed on the bottom surface of the vacuum belt assembly 112 in the vertical direction, and the electrode release area 112b is formed on the bottom surface of the vacuum belt assembly 112 in the vertical direction. The battery cell recycling device 100 also includes a support roller 18, which is disposed below the electrode release area 112b in the vertical direction. This allows the support roller 18 to support the first electrode released from the electrode release area 112b, preventing the first electrode from being pulled away from the electrode adsorption as its weight increases in the electrode recycling area. This also prevents the vacuum belt assembly 112 from failing to adsorb and transport the first electrode, thus ensuring that the first electrode can be smoothly separated from the first diaphragm for recycling. At the same time, the support roller 18 can be configured to move along the length of the first electrode, that is, the support roller 18 can move along the length of the first electrode, so that the first electrode can fall into the first electrode collection box 17a in a "Z" shape, saving storage space and making it less likely to break the first electrode.

[0130] In some embodiments, such as Figure 8 and Figure 10 As shown, the battery cell recycling equipment 100 also includes a dust removal device 19, such as an ultrasonic dust removal device 19. The dust removal device 19 is arranged above and / or below the vacuum belt assembly 112 in the vertical direction so that the dust removal device 19 can be used to remove impurities, such as dust particles and metal particles, from the surface of the first electrode sheet adsorbed by the vacuum belt assembly 112. This allows the first electrode sheet to remain clean, which is beneficial for the first electrode sheet to be directly recycled after recycling. This reduces the probability of short circuits in the battery cells made from the recycled first electrode sheet, thereby reducing the scrap rate of the battery cells and saving costs.

[0131] Furthermore, the first electrode is flattened by adsorbing the vacuum belt assembly 112. That is, after the first electrode is flattened on the vacuum belt assembly 112, the surface of the first electrode is cleaned by the dust removal device 19. After cleaning, it is directly collected in the first electrode collection box 17a. This can effectively remove impurities from the surface of the first electrode, and the dust removal effect is better. At the same time, compared with the method of dust removal after the first electrode enters the first electrode collection box 17a, the dust removal device 19 is set above or below the vacuum belt assembly 112, which can remove dust from the first electrode while recovering it, and the efficiency is higher.

[0132] In some embodiments, the dust removal device 19 is pipe-connected to an impurity collection box 20, which is used to collect impurities on the surface of the first electrode plate removed by the dust removal device 19.

[0133] In some embodiments, the vacuum belt assembly 112 includes a first vacuum belt 112c and a second vacuum belt 112d. In the moving direction of the electrode adsorption assembly 111, the first vacuum belt 112c is closer to the tumbling bucket 13 than the second vacuum belt 112d. The first vacuum belt 112c is used to adsorb the first electrode adsorbed by the electrode adsorption assembly 111. The second vacuum belt 112d and the first vacuum belt 112c are partially spaced apart and stacked in the vertical direction, so that the second vacuum belt 112d can be used to adsorb the first electrode adsorbed by the first vacuum belt 112c and to transport the first electrode to the electrode recycling area. The dust removal device 19 includes a first dust removal assembly 191 and a second dust removal assembly 192. The first dust removal assembly 191 is disposed above one of the first vacuum belt 112c and the second vacuum belt 112d, and the second dust removal assembly 192 is disposed below the other of the first vacuum belt 112c and the second vacuum belt 112d. This allows for dust removal from both surfaces of the first electrode, resulting in a better dust removal effect.

[0134] In one exemplary configuration, a first vacuum belt 112c is located below a second vacuum belt 112d in the vertical direction, and the top surface of the first vacuum belt 112c in the vertical direction forms an electrode adsorption area 112a to adsorb the first electrode adsorbed by the electrode adsorption assembly 111. The bottom surface of the second vacuum belt 112d in the vertical direction forms an electrode adsorption area 112a and an electrode release area 112b. The electrode adsorption areas 112a of the second vacuum belt 112d and the electrode adsorption areas 112a of the first vacuum belt 112c are partially spaced apart from each other and stacked in the vertical direction, so that the electrode adsorption area 112a of the second vacuum belt 112d can be used to adsorb the first electrode adsorbed by the electrode adsorption area 112a of the first vacuum belt 112c.

[0135] In this exemplary embodiment, the first dust removal assembly 191 is located above the first vacuum belt 112c in the vertical direction, while the second dust removal assembly 192 is located below the second vacuum belt 112d in the vertical direction.

[0136] In another exemplary embodiment, the first vacuum belt 112c is located above the second vacuum belt 112d in the vertical direction, and the bottom surface of the first vacuum belt 112c in the vertical direction forms an electrode adsorption area 112a to adsorb the first electrode adsorbed by the electrode adsorption assembly 111. The top surface of the second vacuum belt 112d in the vertical direction forms an electrode adsorption area 112a and an electrode release area 112b. The electrode adsorption areas 112a of the second vacuum belt 112d and the electrode adsorption areas 112a of the first vacuum belt 112c are partially spaced apart from each other and stacked in the vertical direction, so that the electrode adsorption area 112a of the second vacuum belt 112d can be used to adsorb the first electrode adsorbed by the electrode adsorption area 112a of the first vacuum belt 112c.

[0137] In this exemplary embodiment, the first dust removal assembly 191 is located above and below the first vacuum belt 112c in the vertical direction, while the second dust removal assembly 192 is located above the second vacuum belt 112d in the vertical direction.

[0138] Optionally, such as Figure 10 , Figure 11 and Figure 12 As shown, the first vacuum belt 112c and the second vacuum belt 112d of the vacuum belt assembly 112 both include a vacuum box 1121, a conveyor belt 1122 and a rotary motor 1123. The vacuum box 1121 has a first end 1121a and a second end 1121b arranged opposite to each other in the moving direction of the electrode adsorption assembly. The first end 1121a and the second end 1121b are respectively provided with rotatable shafts 1124. The conveyor belt 1122 is sleeved on the outer periphery of the vacuum box 1121 and the two shafts 1124. The rotary motor 1123 is connected to one of the shafts 1124, so that the rotary motor 1123 can drive the shaft 1124 to rotate, thereby driving the conveyor belt 1122 to move.

[0139] Among them, such as Figure 11 As shown, for the first vacuum belt 112c, the vacuum box 1121 is provided with a first air hole 1121c communicating with its internal space, and the conveyor belt 1122 is provided with a second air hole 1122a communicating with the first air hole 1121c. A vacuum pumping mechanism (not shown) is provided in the internal space of the vacuum box 1121 to form a negative pressure in the internal space of the vacuum box 1121, thereby forming a negative pressure in the second air hole 1122a communicating with the first air hole 1121c, thereby adsorbing the first electrode. The area where the second air hole 1122a communicating with the first air hole 1121c is located (i.e., the location of the first end 1121a of the vacuum box 1121) forms the electrode adsorption area 112a.

[0140] As for the second vacuum belt 112d, such as Figure 12As shown in an exemplary embodiment, the first end 1121a is provided with a first air hole 1121c communicating with the internal space of the vacuum box 1121, while the second end 1121b is not provided with an air hole communicating with the internal space of the vacuum box 1121. The conveyor belt 1122 is provided with a second air hole 1122a, which can communicate with the first air hole 1121c when it is located at the first end 1121a. A vacuum mechanism (not shown) is provided inside the vacuum box 1121 to create a negative pressure inside the vacuum box 1121. This negative pressure creates a negative pressure inside the second vent 1122a, which is connected to the first vent 1121c. This causes the first electrode to be attracted. The area where the second vent 1122a is connected to the first vent 1121c (i.e., the location of the first end 1121a of the vacuum box 1121) forms the electrode adsorption area 112a. Since the second end 1121b of the vacuum box 1121 does not have a vent, even if the area where the second end 1121b is located has a second vent 1122a, it will not be connected to the internal space of the vacuum box 1121 and will not attract the first electrode. Therefore, the area where the second end 1121b is located forms the electrode release area 112b.

[0141] Another example, such as Figure 13 As shown, a first cavity is formed inside the first end 1121a, and a second cavity is formed inside the second end 1121b. The first cavity and the second cavity are isolated from each other. A first air hole 1121c communicating with the first cavity is provided at the first end 1121a of the vacuum box 1121, and a second air hole 1122a is provided on the conveyor belt 1122. The second air hole 1122a can communicate with the first air hole 1121c when it is located at the first end 1121a. The first cavity is equipped with a vacuum mechanism to create a negative pressure in the first cavity, thereby creating a negative pressure in the second vent 1122a that is connected to the first vent 1121c. This causes the first electrode to be adsorbed, and the area where the second vent 1122a is connected to the first vent 1121c forms the electrode adsorption area 112a. Since the second cavity is not connected to the first cavity and is isolated from it, the second cavity is not affected by the vacuum mechanism and does not form a negative pressure. Even if there is a second vent in the area where the second cavity is located, the first electrode will not be adsorbed, and the area where the second cavity is located forms the electrode release area 112b.

[0142] In some embodiments, the first electrode is a positive electrode, and the second electrode is a negative electrode. Since this application typically uses aluminum foil as the main material for the positive electrode and copper foil as the main material for the negative electrode, and aluminum foil is more valuable than copper foil, this application uses the electrode adsorption assembly 111 and the vacuum belt assembly 112 to adsorb and flatten the positive electrode. After the positive electrode is flattened on the vacuum belt assembly 112, the surface of the positive electrode is cleaned by the dust removal device 19. This allows the positive electrode to be kept as undamaged and clean as possible for recycling and reuse, resulting in higher recycling value.

[0143] In some embodiments, such as Figures 14 to 16 As shown, the battery cell recycling equipment 100 also includes a first limiting roller 24 and a second limiting roller 25. The first limiting roller 24 and the second limiting roller 25 are both located above the diaphragm separation mechanism 12 in the vertical direction, and are arranged at intervals along the moving direction of the electrode separation mechanism 11, specifically along the moving direction of the electrode adsorption assembly 111. The gap between the first limiting roller 24 and the second limiting roller 25 is used for the passage of the remaining part of the battery cell, and the first limiting roller 24 and the second limiting roller 25 can approach each other to push the remaining part of the battery cell to move, thereby adjusting the position of the remaining part of the battery cell to ensure that the remaining part of the battery cell falls smoothly between the first diaphragm separation assembly 121 and the second diaphragm separation assembly 122, thereby ensuring that the first diaphragm separation assembly 121 can smoothly act on the first diaphragm to separate the first diaphragm and the second electrode, and ensuring that the second diaphragm separation assembly 122 can smoothly act on the second diaphragm to separate the second diaphragm and the second electrode.

[0144] As one embodiment, only the first limiting roller 24 can move toward the second limiting roller 25 to push the remaining part of the battery cell to move, thereby adjusting the position of the remaining part of the battery cell.

[0145] In another embodiment, only the second limiting roller 25 can move toward the first limiting roller 24 to push the remaining part of the battery cell to move, thereby adjusting the position of the remaining part of the battery cell.

[0146] In another embodiment, the first limiting roller 24 can move toward the second limiting roller 25, and the second limiting roller 25 can also move toward the first limiting roller 24, so that the first limiting roller 24 and the second limiting roller 25 move closer to each other, thereby pushing the remaining part of the battery cell to move and adjusting the position of the remaining part of the battery cell.

[0147] Optionally, the first limiting roller 24 and / or the second limiting roller 25 can be moved by a power mechanism such as a pneumatic cylinder mechanism or a hydraulic cylinder mechanism.

[0148] In some embodiments, such as Figure 14 , Figure 15 and Figure 17 As shown, the first diaphragm separation assembly 121 includes a movably disposed first diaphragm adsorption assembly 1211. The first diaphragm adsorption assembly 1211 is used to adsorb the first diaphragm in the remaining part of the battery cell and to drive the first diaphragm to move so as to separate the first diaphragm and the second electrode. Compared with the method of using a clamping assembly to pinch the first diaphragm, the first diaphragm is adsorbed by the first diaphragm adsorption assembly 1211 so that the first diaphragm can move together with the first diaphragm adsorption assembly 1211, thereby realizing the separation between the first diaphragm and the second electrode, which can avoid damage to the first diaphragm and ensure the integrity of the first diaphragm.

[0149] Similarly, the second diaphragm separation assembly 122 includes a movably disposed second diaphragm adsorption assembly 1221. The second diaphragm adsorption assembly 1221 is used to adsorb the second diaphragm in the remaining part of the battery cell and to drive the second diaphragm to move so that the second diaphragm is separated from the second electrode. Compared with the method of using a clamping assembly to pinch the second diaphragm, the second diaphragm is adsorbed by the second diaphragm adsorption assembly 1221 so that the second diaphragm can move together with the second diaphragm adsorption assembly 1221, thereby realizing the separation between the second diaphragm and the second electrode. This can avoid damage to the second diaphragm and ensure the integrity of the second diaphragm.

[0150] In this application, the structures of the first membrane adsorption component 1211 and the second membrane adsorption component 1221 may be the same or different, and the specific method adopted can be determined according to the actual situation.

[0151] This application takes the first membrane adsorption component 1211 and the second membrane adsorption component 1221 as examples of having the same structure, and uses the first membrane adsorption component 1211 as an example to describe the specific structure of the first membrane adsorption component 1211 and the second membrane adsorption component 1221.

[0152] The first membrane adsorption assembly 1211 in this application includes a second driving mechanism 1211a and a second vacuum suction cup 1211b connected to the second driving mechanism 1211a. The second vacuum suction cup 1211b is used to adsorb the remaining part of the first membrane of the battery cell. The second driving mechanism 1211a is used to drive the second vacuum suction cup 1211b to move to the remaining part of the first membrane of the battery cell, adsorb the first membrane, and drive the second vacuum suction cup 1211b that has adsorbed the first membrane to move away from the second electrode, so as to separate the first membrane and the second electrode.

[0153] Optionally, the second drive mechanism 1211a may be a cylinder mechanism or a hydraulic cylinder mechanism, etc.

[0154] In some embodiments, the first diaphragm separation assembly 121 further includes a rotatably disposed first diaphragm receiving assembly 1212, which is used to wind and collect the first diaphragm taken away by the first diaphragm adsorption assembly 1211. In this way, the traction force of the first diaphragm receiving assembly 1212 on the first diaphragm provides the power for the cell to tumble in the tumbling body 131, reducing the pulling force of the first electrode on the cell, thereby reducing the traction force of the electrode separation mechanism 11 on the first electrode, so as to avoid the first electrode being pulled off by the electrode separation mechanism 11.

[0155] Similarly, the second diaphragm separation assembly 122 also includes a rotatably mounted second diaphragm receiving assembly 1222. The second diaphragm receiving assembly 1222 is used to wind and collect the second diaphragm that has been taken away by the second diaphragm adsorption assembly 1221. In this way, the traction force of the second diaphragm receiving assembly 1222 on the second diaphragm provides the power for the cell to tumble in the tumbling body 131, reducing the pulling force of the first electrode on the cell, thereby reducing the traction force of the electrode separation mechanism 11 on the first electrode, so as to avoid the first electrode being pulled off by the electrode separation mechanism 11.

[0156] This application takes the first diaphragm receiving assembly 1212 and the second diaphragm receiving assembly 1222 as examples of having the same structure, and uses the first diaphragm receiving assembly 1212 as an example to describe the specific structure of the first diaphragm receiving assembly 1212 and the second diaphragm receiving assembly 1222.

[0157] The first diaphragm take-up assembly 1212 in this application includes a second rotating component 1212a, a second connecting rod 1212b, a first take-up roller 1212c, and a second take-up roller 1212d. The second connecting rod 1212b is connected to the second rotating component 1212a. The first take-up roller 1212c is connected to one end of the second connecting rod 1212b, and the second take-up roller 1212d is connected to the other end of the second connecting rod 1212b and spaced apart from the first take-up roller 1212c. After the second vacuum suction cup 1211b drives the first diaphragm through the gap between the first take-up roller 1212c and the second take-up roller 1212d, the second driving mechanism 1211a drives the entire assembly of the second connecting rod 1212b, the first take-up roller 1212c, and the second take-up roller 1212d to rotate, so as to wind the first diaphragm onto the first take-up roller 1212c and the second take-up roller 1212d.

[0158] Optionally, the second drive mechanism 1211a may be a rotary cylinder or a rotary motor, etc.

[0159] In some embodiments, the first diaphragm receiving assembly 1212 is provided with a first diaphragm collection box 26 in the lower vertical direction. After the first diaphragm is received, the first receiving roller 1212c and the second receiving roller 1212d of the first diaphragm receiving assembly 1212 rotate in opposite directions to release the tape, and collect the first diaphragm in the first diaphragm collection box 26.

[0160] Similarly, the second diaphragm receiving assembly 1222 is provided with a second diaphragm collection box 27 in the lower vertical direction. After the second diaphragm is received, the first receiving roller 1212c and the second receiving roller 1212d of the second diaphragm receiving assembly 1222 rotate in opposite directions to release the tape, and collect the second diaphragm in the second diaphragm collection box 27.

[0161] Please see Figure 18 This application also discloses a battery cell recycling method using the battery cell recycling equipment described in any of the foregoing embodiments, the battery cell recycling method comprising:

[0162] 101. The clamping component holds the battery cell in place.

[0163] 102. The clamping assembly drives the battery cell to rotate so as to unroll and unfold the battery cell.

[0164] like Figure 1 As shown, in this step, the rolled-up battery cell is unrolled, so that the front end of the battery cell unfolds to form the unfolded part of the battery cell.

[0165] 103. Static eliminator eliminates static electricity in the unfolded part of the battery cell.

[0166] The electrostatic elimination device used in this step can be an ion air knife, which is a fixed electrostatic elimination device that can deliver electrostatic neutralizing ions to the target object to eliminate the static electricity generated by the friction between the electrode and the separator (e.g., between the first electrode and the first separator, between the second electrode and the first separator, and between the second electrode and the second separator) during the unwinding process of the battery cell, thereby ensuring that the electrode and the separator can be separated smoothly in the subsequent steps.

[0167] 104. The electrode separation mechanism separates the first electrode and the first diaphragm in the unfolded part of the battery cell, and the remaining part of the battery cell falls between the first diaphragm separation assembly and the second diaphragm separation assembly.

[0168] The specific structure of the electrode separation mechanism used in this step can be found in the description of the specific structure of the electrode separation mechanism above, and will not be repeated here.

[0169] 105. The first diaphragm separation assembly separates the first diaphragm and the second electrode in the remaining part of the cell.

[0170] The specific structure of the first diaphragm separation component used in this step can be found in the description of the specific structure of the first diaphragm separation component above, and will not be repeated here.

[0171] 106. The second diaphragm separation assembly separates the second diaphragm and the second electrode in the remaining part of the cell.

[0172] The specific structure of the second diaphragm separation component used in this step can be found in the description of the specific structure of the second diaphragm separation component above, and will not be repeated here.

[0173] It is understandable that step 105 can be performed before step 106, or step 106 can be performed before step 105, or steps 105 and 106 can be performed simultaneously. The specific method can be determined according to the actual situation, and this application embodiment does not make specific limitations.

[0174] After the first diaphragm and the second electrode separate, the second electrode naturally falls into the collection box under its own weight. This avoids winding and coiling the second electrode, reducing the risk of breakage. This is because after the second electrode is wound into a coiled cell, stress concentration occurs at the bending points. If it is unwound and rewound in the reverse direction, the stress concentration at the bending points will be aggravated, making the second electrode more prone to breakage.

[0175] 107. The clamping assembly releases the battery cell into the receiving tray.

[0176] In this step, specifically after the clamping component is released and the battery cell is loosened, the battery cell falls to the receiving tray under its own gravity.

[0177] 108. The rotating component drives the receiving tray to rotate, allowing the battery cell to slide to the tumbling guide and then tumble from the tumbling guide to the tumbling main body for reverse winding and tumbling.

[0178] In this step, after the battery cell falls onto the receiving tray, the rotating component drives the receiving tray to rotate, allowing the battery cell to slide smoothly down the receiving tray to the tumbling guide section. Then, it smoothly tumbles along the tumbling guide section to the tumbling main body section for reverse winding and tumbling. This ensures the falling posture of the battery cell, prevents the battery cell from getting stuck in the tumbling hopper, and allows the battery cell to tumble in the tumbling hopper, thereby effectively solving the problem of easy strip breakage during electrode reverse winding.

[0179] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0180] Furthermore, the embodiments described above are merely illustrative of several implementation methods of this application, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of this application. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this application, and these all fall within the protection scope of this application. Therefore, the content of this specification should not be construed as a limitation of this application, and the protection scope of this application should be determined by the appended claims.

Claims

1. A battery cell recycling device, characterized in that, The battery cell recycling equipment is used to separate and recycle the first electrode, the second electrode, the first diaphragm, and the second diaphragm of the battery cell, wherein the first electrode, the first diaphragm, the second electrode, and the second diaphragm are stacked in sequence. The battery cell recycling equipment includes: A clamping assembly for rotatably clamping the battery cell and for driving the battery cell to rotate so that the battery cell is unrolled. An electrode separation mechanism is used to separate the first electrode and the first separator of the unfolded portion of the battery cell. A diaphragm separation mechanism is located below the electrode separation mechanism. The diaphragm separation mechanism includes a first diaphragm separation component and a second diaphragm separation component. The first diaphragm separation component is used to separate the first diaphragm and the second electrode in the remaining part of the battery cell. The second diaphragm separation component is used to separate the second diaphragm and the second electrode in the remaining part of the battery cell. The remaining part of the battery cell is configured as: the first diaphragm after the first electrode is separated from the first diaphragm, the second electrode, and the second diaphragm. The tumbling bucket includes a tumbling main body and a tumbling guide connected to each other. The tumbling guide is located between the tumbling main body and the electrode separation mechanism. In the vertical direction, the tumbling guide is gradually inclined from the tumbling main body toward the electrode separation mechanism so that when the battery cell falls from the clamping assembly to the tumbling guide, the battery cell can be unwinded and tumbled along the tumbling guide to the tumbling main body and maintain the unwinding tumbling. A rotating assembly, disposed between the clamping assembly and the tumbling main body, and in the vertical direction, the rotating assembly is higher than the tumbling guide portion; and The receiving tray has one end connected to the rotating assembly and the other end movably abutting against the tumbling guide. It can disengage from the tumbling guide under the rotation of the rotating assembly, so that the battery cell released from the clamping assembly can slide in the receiving tray and slide to the tumbling guide.

2. The battery cell recycling equipment according to claim 1, characterized in that, The tilt angle θ formed by the tumbling guide and the horizontal direction satisfies the following relationship: θ>arctan((L / 2) / (H / 2))=arctan(L / H); Where L is the width of the battery cell and H is the thickness of the battery cell.

3. The battery cell recycling equipment according to claim 1, characterized in that, The electrode separation mechanism includes an electrode adsorption assembly, which is movably disposed on one side of the tumbling bucket. The electrode adsorption assembly is used to adsorb the first electrode of the unfolded part of the battery cell and to drive the first electrode to move so as to separate the first electrode from the first separator.

4. The battery cell recycling equipment according to claim 3, characterized in that, The electrode separation mechanism further includes a vacuum belt assembly, which is disposed on the side of the electrode adsorption assembly away from the tumbling bucket. The vacuum belt assembly is used to adsorb the first electrode adsorbed by the electrode adsorption assembly and to transport the first electrode to the electrode recycling area.

5. The battery cell recycling equipment according to claim 4, characterized in that, The electrode recovery area is located below the vacuum belt assembly in the vertical direction; The vacuum belt assembly includes an electrode adsorption area and an electrode release area connected to each other. The electrode adsorption area is used to adsorb the first electrode adsorbed by the electrode adsorption assembly, and the electrode release area is used to release the first electrode adsorbed by the electrode adsorption area, so that the first electrode detaches from the vacuum belt assembly and falls into the electrode recovery area.

6. The battery cell recycling equipment according to claim 5, characterized in that, The electrode adsorption area is at least partially formed on the bottom surface of the vacuum belt assembly in the vertical direction, and the electrode release area is formed on the bottom surface of the vacuum belt assembly in the vertical direction. The cell recycling equipment also includes a support roller, which is disposed below the electrode release area in the vertical direction. The support roller is used to support the first electrode that is released and falls from the electrode release area.

7. The battery cell recycling equipment according to claim 4, characterized in that, The battery cell recycling equipment also includes a dust removal device, which is disposed above and / or below the vacuum belt assembly in the vertical direction. The dust removal device is used to remove impurities from the surface of the first electrode plate that is adsorbed by the vacuum belt assembly.

8. The battery cell recycling equipment according to claim 7, characterized in that, The vacuum belt assembly includes a first vacuum belt and a second vacuum belt. The first vacuum belt is used to adsorb the first electrode adsorbed by the electrode adsorption assembly. The second vacuum belt and the first vacuum belt are partially spaced apart and stacked in the vertical direction, so that the second vacuum belt is used to adsorb the first electrode adsorbed by the first vacuum belt and to transport the first electrode to the electrode recycling area. The dust removal device includes a first dust removal component and a second dust removal component. The first dust removal component is disposed above one of the first vacuum belt and the second vacuum belt, and the second dust removal component is disposed below the other of the first vacuum belt and the second vacuum belt.

9. The battery cell recycling equipment according to claim 7, characterized in that, The first electrode is a positive electrode.

10. The battery cell recycling equipment according to claim 4, characterized in that, The battery cell recycling equipment also includes a guide roller, which is located on the side of the tumbling guide portion away from the tumbling main body portion, and the guide roller is higher than the tumbling guide portion in the vertical direction. The guide roller is used to conduct and support the unfolded part of the battery cell.

11. The battery cell recycling equipment according to claim 10, characterized in that, The number of guide rollers is multiple, and the multiple guide rollers are arranged at intervals along the moving direction of the electrode adsorption assembly. Among the multiple guide rollers, the guide roller closest to the tumbling guide in the moving direction of the electrode adsorption assembly is used to conduct and support the unfolded part of the battery cell, and the remaining guide rollers are used to conduct and support the first electrode after it is separated from the first diaphragm.

12. The battery cell recycling equipment according to claim 1, characterized in that, The battery cell recycling equipment further includes a first limiting roller and a second limiting roller. The first limiting roller and the second limiting roller are both located above the diaphragm separation mechanism in the vertical direction, and the first limiting roller and the second limiting roller are arranged at intervals along the moving direction of the electrode separation mechanism. The gap between the first limiting roller and the second limiting roller is used to allow the remaining part of the battery cell to pass through, and the first limiting roller and the second limiting roller can approach each other.

13. The battery cell recycling equipment according to claim 1, characterized in that, The first membrane separation assembly includes a movably disposed first membrane adsorption assembly, which is used to adsorb the first membrane in the remaining part of the battery cell and to drive the first membrane to move so as to separate the first membrane from the second electrode. And / or, The second membrane separation assembly includes a movably disposed second membrane adsorption assembly, which is used to adsorb the second membrane in the remaining part of the battery cell and to drive the second membrane to move so as to separate the second membrane from the second electrode.

14. The battery cell recycling equipment according to claim 13, characterized in that, The first membrane separation assembly further includes a rotatably disposed first membrane receiving assembly, which is used to wind and collect the first membrane that has been carried away by the first membrane adsorption assembly; and / or, The second diaphragm separation assembly further includes a rotatably disposed second diaphragm receiving assembly, which is used to wind and collect the second diaphragm that has been carried away by the second diaphragm adsorption assembly.

15. The battery cell recycling equipment according to claim 1, characterized in that, The battery cell recycling equipment also includes an electrostatic elimination device, which is used to eliminate static electricity in the unfolded portion of the battery cell before the first electrode and the first diaphragm are separated.

16. A method for recycling battery cells using the battery cell recycling equipment as described in any one of claims 1-14, characterized in that, The battery cell recycling method includes: The clamping assembly holds the battery cell; The clamping assembly drives the battery cell to rotate so as to unroll and unfold the battery cell. The electrode separation mechanism drives the unfolded first electrode to move, so that the first electrode and the first diaphragm are separated, and the remaining part of the cell falls between the first diaphragm separation assembly and the second diaphragm separation assembly. The first membrane separation assembly drives the first membrane in the remaining part of the cell to move, so as to separate the first membrane from the second electrode. The second membrane separation assembly moves the second membrane in the remaining part of the cell to separate the second membrane from the second electrode. The clamping assembly releases the battery cell into the receiving tray; The rotating component drives the receiving tray to rotate, allowing the battery cell to slide to the tumbling guide and then tumble from the tumbling guide to the tumbling main body for reverse winding and tumbling.

17. The cell recycling method according to claim 16, characterized in that, The battery cell recycling equipment also includes an electrostatic elimination device; Prior to the step of separating the first electrode and the first separator in the unfolded portion of the battery cell by the electrode separation mechanism, the battery cell recycling method further includes: The static electricity elimination device eliminates static electricity in the unfolded part of the battery cell.

Images