Battery recovery device and battery recovery method

Abstract

The invention is suitable for the technical field of battery recovery, and provides a battery recovery device and a battery recovery method. The battery recovery device comprises a conveying mechanism, at least one diaphragm separation mechanism and at least one pole piece separation mechanism, wherein the conveying mechanism is provided with a conveying face and a limiting assembly, the conveying mechanism is used for conveying the electrode assembly, and the unseparated part in the electrode assembly can be kept in the original conveying state through the limiting assembly; the electrode assembly comprises a diaphragm and a pole piece; the diaphragm separation mechanism is used for separating the diaphragm from the adjacent pole piece; and the pole piece separating mechanism is used for separating the pole piece from the adjacent diaphragm and / or separating the pole piece from the conveying surface. The battery recovery device and the battery recovery method provided by the invention are not only suitable for disassembly of a dry electrode assembly, but also suitable for disassembly of a wet electrode assembly.

Description

Technical Field

[0001] The present application belongs to the technical field of battery recycling, and in particular, relates to a battery recycling device and a battery recycling method. Background Art

[0002] During long-term charging and discharging, the properties of the internal materials of the battery will change and it will no longer be usable. Directly discarding the battery will affect the environment and waste resources. Among them, the electrode assembly in the battery has a high recycling value, but there is currently a lack of recycling equipment and methods suitable for recycling wet electrode assemblies. Summary of the invention

[0003] In view of the above problems, the present application provides a battery recycling device and a battery recycling method, aiming to provide a recycling device and a recycling method suitable for recycling wet electrode assemblies.

[0004] In a first aspect, an embodiment of the present application provides a battery recycling device, comprising a conveying mechanism, at least one diaphragm separation mechanism and at least one electrode piece separation mechanism; wherein the conveying mechanism has a conveying surface and a limiting component, the conveying mechanism is used to convey the electrode assembly, and can keep the unseparated part of the electrode assembly in the original conveying state through the limiting component; the electrode assembly comprises a diaphragm and a electrode piece; the diaphragm separation mechanism is used to separate the diaphragm from the adjacent electrode piece; the electrode piece separation mechanism is used to separate the electrode piece from the adjacent diaphragm, and / or separate the electrode piece from the conveying surface.

[0005] The battery recycling device provided in the embodiment of the present application includes a conveying mechanism, at least one diaphragm separation mechanism and at least one pole piece separation mechanism, wherein the conveying mechanism has a conveying surface and a limit assembly, the conveying mechanism is used to convey the electrode assembly, and can keep the unseparated part of the electrode assembly in the original conveying state through the limit assembly. The diaphragm separation mechanism can separate the diaphragm from the pole piece. The pole piece separation mechanism can separate the pole piece from the diaphragm, and / or separate the pole piece from the conveying surface. The battery recycling device provided in the embodiment of the present application can reduce the risk of the remaining part of the electrode assembly being taken away from the conveying mechanism under the action of tension when the diaphragm separation mechanism separates the diaphragm, or when the pole piece separation mechanism separates the pole piece, to a certain extent, so that the diaphragm and the pole piece in the electrode assembly can be separated in sequence, so that the battery recycling device provided in the embodiment of the present application is not only suitable for the disassembly of dry electrode assemblies, but also suitable for the disassembly of wet electrode assemblies, and can realize the separate separation of each component in the electrode assembly to facilitate the subsequent separate treatment of these parts, which can reduce the risk of environmental pollution to a certain extent.

[0006] In some embodiments, the diaphragm includes a first diaphragm and a second diaphragm, and the electrode includes a first electrode and a second electrode; the first diaphragm, the first electrode, the second diaphragm and the second electrode are stacked in sequence, and the second electrode is in contact with the conveying surface;

[0007] There are two pole piece separation mechanisms, and the two pole piece separation mechanisms are respectively used to guide the first pole piece and the second pole piece to the outside of the conveying mechanism accordingly.

[0008] There are two pole piece separation mechanisms, compared with one pole piece separation mechanism. Therefore, the first pole piece and the second pole piece can be recovered separately without moving the position of the pole piece separation mechanism, so that the recovery of the pole pieces can be faster, which can improve the recovery efficiency of each component of the electrode assembly to a certain extent.

[0009] In some embodiments, the limiting component is a vacuum component, which is located below the conveying surface or in the space enclosed by the conveying surface. The vacuum component is used to make the air pressure below the conveying surface lower than the air pressure above the conveying surface, or to make the air pressure inside the space enclosed by the conveying surface lower than the air pressure outside the space enclosed by the conveying surface.

[0010] The conveying mechanism adopts a vacuum conveying mechanism, which can make the electrode assembly fit the conveying surface better when being conveyed on the conveying surface, so that other parts of the electrode assembly are not easily lifted by the diaphragm when the diaphragm separation mechanism grabs the diaphragm, so that other parts of the electrode assembly can be kept flat and continue to be conveyed forward, so that when the pole pieces in other parts move to the position of the pole piece separation mechanism, they can be separated from the remaining part of the electrode assembly or the conveying surface through the pole piece separation mechanism. In addition, the vacuum assembly in the vacuum conveying mechanism is a limit assembly, so that the conveying mechanism can adopt the existing vacuum conveying mechanism on the market, without modification, and can be equipped with a limit assembly, which can reduce the design and operation difficulty of the conveying mechanism to a certain extent, and can improve the assembly efficiency of the battery recycling device.

[0011] In some embodiments, the pole piece separation mechanism has a guide surface that is arranged obliquely relative to the conveying surface of the conveying mechanism, and the guide surface is used to guide the first pole piece and / or the second pole piece to the outside of the conveying mechanism.

[0012] The pole piece separation mechanism realizes separation of the first pole piece or the second pole piece through the guide surface, and the operation is simple, and the structure adopted by the pole piece separation mechanism can also be very simple, which can reduce the production and purchase costs of the pole piece separation mechanism and facilitate assembly.

[0013] In some embodiments, the conveying surface is an annular structure, and the two guide surfaces are disposed on opposite sides of the conveying surface. The two guide surfaces are disposed on both sides of the conveying mechanism, which can reduce the length of the conveying mechanism compared to the two guide surfaces being located on the same side of the conveying mechanism, and make the battery recycling device compact and occupy a small space.

[0014] In some embodiments, the conveying surface has a first end and a second end arranged opposite to each other along its conveying direction, and the first end is the starting end of the conveying surface; along the conveying sequence, the guide surface located in the front corresponds to the position of the second end, and a gap is formed between the guide surface and the conveying surface for the second diaphragm and the second pole piece to pass through.

[0015] By adopting the solution provided in this embodiment, one of the guide surfaces corresponds to the second end position, so that after the electrode assembly after the first diaphragm is removed reaches the position of the guide surface under the transportation of the conveying mechanism, the first electrode sheet in the electrode assembly can fall across the second end of the conveying mechanism after passing through the guide surface, thereby reducing the risk of the first electrode sheet falling onto the conveying mechanism again after being separated by the electrode sheet separation mechanism to a certain extent, and allowing the remaining part of the electrode assembly on the conveying mechanism to be transported normally, and facilitating the recovery of the first electrode sheet.

[0016] In some embodiments, a direction perpendicular to the conveying direction is taken as a projection direction, and the orthographic projections of the two guide surfaces along the projection direction do not overlap.

[0017] By adopting the solution provided in this embodiment, the first pole piece and the second pole piece can be dropped to different positions after being guided by two guide surfaces, which can reduce the risk of mixing of the first pole piece and the second pole piece to a certain extent, thereby facilitating the subsequent separate recovery of the two pole pieces.

[0018] In some embodiments, along the conveying sequence, the guide surface at the rear corresponds to the first end position. This can maximize the distance between the two guide surfaces, so that the distance between the first pole piece and the second pole piece after they are guided by the guide surface and dropped from the conveying mechanism to the ground can be larger, which can reduce the risk of mixing the two pole pieces after they fall to a certain extent, and provide convenience for the separate recovery of the two pole pieces.

[0019] In some embodiments, the pole piece separation mechanism comprises a block having an inclined surface for contacting the first pole piece and / or the second pole piece, the inclined surface being the guide surface. The pole piece separation mechanism adopts the structure provided in this embodiment, which is simple in structure and easy to install.

[0020] In some embodiments, the battery recycling device further includes a recycling box, which is arranged corresponding to the guide surface and is used to receive the first pole piece and / or the second pole piece that falls after being guided by the guide surface. The arrangement of the recycling box facilitates the centralized collection of the first pole piece and / or the second pole piece, and subsequent processing.

[0021] In some embodiments, the membrane separation mechanism is provided with two, and the two membrane separation mechanisms are used to separate the first membrane and the second membrane respectively, so that the first membrane and the second membrane are separated from other components of the electrode assembly respectively. Compared with the case where there is only one membrane separation mechanism, the membrane separation mechanism is provided with two, so that the first membrane and the second membrane can be recovered separately without moving the position of the membrane separation mechanism, so that the membrane recovery can be faster, and the recovery efficiency of each component of the electrode assembly can be improved to a certain extent.

[0022] In some embodiments, the diaphragm separation mechanism includes an adsorption component and a first driving component, wherein the first driving component is drivingly connected to the adsorption component to drive the adsorption component to reciprocate between an adsorption position and a release position, and the adsorption component is used to adsorb the first diaphragm and / or the second diaphragm at the adsorption position, and to release the adsorbed first diaphragm and / or the second diaphragm at the release position.

[0023] The membrane separation mechanism adopts the structure provided in this embodiment, including an adsorption component and a first drive component, wherein the first drive component is connected to the adsorption component in a driving manner, and can control the adsorption component to move between an adsorption position and a release position. In this way, the first membrane or the second membrane can be captured and released by adsorption, which is not likely to cause damage to the structure of the first membrane or the second membrane, and is convenient for subsequent recycling.

[0024] In some embodiments, the first driving assembly includes a lifting assembly and a translation assembly, the adsorption assembly is connected to the lifting assembly, the lifting assembly is connected to the translation assembly, the lifting assembly is used to drive the adsorption assembly to rise or fall relative to the conveying surface, and the translation assembly is used to drive the lifting assembly to translate in a direction parallel to the conveying surface. The first driving assembly adopts the structure provided by this embodiment, which is simple in structure and easy to design and assemble.

[0025] In some embodiments, the battery recycling device further includes a loading mechanism, which is used to place the electrode assembly on the conveying surface. The provision of the loading mechanism can further improve the automation of the battery recycling device and improve the disassembly efficiency and recycling efficiency of the electrode assembly.

[0026] In some embodiments, the feeding mechanism includes a clamping assembly and a second driving assembly, the clamping assembly is used to clamp and release the electrode assembly, the clamping assembly is connected to the second driving assembly, and the second driving assembly is used to drive the clamping assembly to move between a material taking position away from the conveying surface and a material discharge position close to the conveying surface. The feeding mechanism adopts the structure provided in this embodiment, which is simple in structure and easy to operate.

[0027] In some embodiments, the second drive assembly includes a connecting member, a first guide portion, and a driving member, the clamping assembly is connected to the connecting member, the connecting member is slidably disposed on the first guide portion, and the driving member is used to drive the connecting member to move along the first guide portion. The second drive assembly adopts the structure provided by this embodiment, which is simple in structure and easy to assemble.

[0028] In some embodiments, the first guide portion includes a guide groove, and the connecting member is slidably mounted in the guide groove. The first guide portion adopts a guide groove, which has a simple structure and is easy to process.

[0029] In some embodiments, the feeding mechanism further includes a guide assembly, which is used to cooperate with the first guide portion to guide the connecting member to move along a preset path. The guide assembly can cooperate with the first guide portion to limit the connecting member to move along the preset path, so that the electrode assembly clamped by the clamping assembly can move from the material taking position to the material discharging position along the preset path, and is not likely to hit obstacles, thereby achieving smooth movement of the electrode assembly.

[0030] In some embodiments, the guide assembly includes a second guide portion and a sliding member slidably disposed on the second guide portion, the sliding member is provided with a third guide portion, the connecting member is slidably disposed on the third guide portion along a first direction, the sliding member is slidably disposed on the second guide portion along a second direction, and the second direction is angularly disposed with the first direction. The guide assembly adopts the structure provided in this embodiment, which is simple and stable in structure and easy to design and process.

[0031] In some embodiments, the battery recycling device further comprises a stripping mechanism, which is used to remove the protective film of the battery cell to expose the end of the electrode assembly. The provision of the stripping mechanism can further improve the automation of the battery recycling device, thereby improving the disassembly efficiency and recycling efficiency of the electrode assembly.

[0032] In some embodiments, the stripping mechanism includes a tip and a third driving component, the third driving component is used to drive the tip to reciprocate between a stripping position and an avoidance position, the tip is used to pierce the battery cell at the stripping position to remove the protective film, and is used to be located outside the moving path of the electrode assembly at the avoidance position. The stripping mechanism adopts the structure provided in this embodiment, which is simple in structure and easy to operate.

[0033] In some embodiments, the battery recycling device further comprises at least one diaphragm winding mechanism, which is used to wind the first diaphragm and / or the second diaphragm separated by the diaphragm separation mechanism into a roll. The arrangement of the diaphragm winding mechanism facilitates winding the first diaphragm or the second diaphragm into a roll and collecting it for subsequent processing.

[0034] In some embodiments, the diaphragm winding mechanism and the diaphragm separation mechanism are arranged one by one. By adopting the solution provided in this embodiment, the first diaphragm and / or the second diaphragm separated by the diaphragm separation mechanism can be directly wound by the corresponding diaphragm winding mechanism, which can reduce the moving distance of the diaphragm separation mechanism, thereby reducing the volume of the diaphragm separation mechanism and making the structure of the entire battery recycling device compact.

[0035] In some embodiments, the diaphragm winding mechanism includes a frame, a winding frame, a telescopic drive assembly and a rotation drive assembly, the winding frame is movably mounted on the frame, the telescopic drive assembly is arranged on the frame and is used to drive the winding frame to move along a third direction relative to the frame to adjust the distance between the winding frame and the diaphragm separation mechanism, and the rotation drive assembly is arranged on the frame and is used to drive the winding frame to rotate relative to the frame to wind the first diaphragm and / or the second diaphragm. The diaphragm winding mechanism adopts the structure provided in this embodiment, and the structure is stable.

[0036] In some embodiments, the telescopic drive assembly is in detachable contact with the winding frame, so that when the winding frame rotates relative to the frame under the action of the rotary drive assembly, it is not affected by the telescopic drive assembly, which facilitates the separate control of translation and rotation, as well as the design of the telescopic drive assembly and the rotary drive assembly.

[0037] In some embodiments, the winding frame has a winding surface for winding the first diaphragm or the second diaphragm, and has a convex portion extending outside the winding surface, and the telescopic drive assembly can be in contact with the convex portion. By adopting the solution provided in this embodiment, the contact between the telescopic drive assembly and the winding frame can be achieved by contacting the convex portion without touching the winding surface and the diaphragm on the winding surface, thereby reducing the adverse effects of the telescopic drive assembly on the winding of the diaphragm, so that the winding of the diaphragm can be carried out normally.

[0038] In some embodiments, the telescopic drive assembly includes a telescopic power source and a pushing assembly, the telescopic power source has a driving end that can move along the third direction relative to the frame, and the pushing assembly is arranged at the driving end; the pushing assembly includes a first body and a second body arranged at intervals along the third direction, a space for accommodating the protrusion and allowing the protrusion to rotate is formed between the first body and the second body, and the first body and the second body drive the protrusion to move along the third direction by contacting the protrusion.

[0039] By adopting the solution provided in this embodiment, when it is necessary to push the winding frame for translation through the telescopic driving assembly, the driving end can be driven to move in the corresponding direction through the telescopic power source, so that the first body or the second body abuts against the convex portion, and drives it and the winding frame to move in the corresponding direction. When it is necessary to rotationally drive the winding frame through the rotation driving assembly, the driving end can be driven to move in the opposite direction through the telescopic power source, so that the first body or the second body is separated from the convex portion. In this way, when the rotation driving assembly drives the winding frame to rotate, the convex portion will not rub against the first body or the second body, so that the winding frame can rotate smoothly.

[0040] In some embodiments, the frame is provided with a rod extending along the third direction, the rod can rotate relative to the frame around its own axis, the winding frame is sleeved on the rod, and the rotation drive assembly drives the rod to rotate so as to drive the winding frame to rotate. The structure provided in this embodiment makes the structure of the diaphragm winding mechanism simple and easy to operate.

[0041] In some embodiments, the battery recycling device further includes a flattening member, which is located in front of the diaphragm separation mechanism along the conveying direction of the conveying mechanism, and a channel is formed between the flattening member and the conveying surface for the electrode assembly to pass through in a flat manner. The provision of the flattening member can reduce the risk of the components in the electrode assembly tilting upward when the electrode assembly is conveyed by the conveying mechanism to a certain extent, so that the electrode assembly can better fit the conveying mechanism, so that the subsequent diaphragm separation mechanism and the electrode sheet separation mechanism can pick up the corresponding components at the preset position. The preset position refers to the position of the above-mentioned adsorption position and the guide surface.

[0042] In a second aspect, an embodiment of the present application provides a battery recycling method, using the battery recycling device provided by any of the above embodiments, the battery recycling method comprising:

[0043] placing the electrode assembly on the conveying surface of the conveying mechanism;

[0044] Sequentially removing the diaphragm and the electrode sheet of the electrode assembly from the conveying mechanism through the diaphragm separation mechanism and the electrode sheet separation mechanism;

[0045] In the process of sequentially removing the diaphragm and the pole piece of the electrode assembly from the conveying mechanism by the diaphragm separation mechanism and the pole piece separation mechanism, the battery recycling method further comprises:

[0046] The limiting assembly allows the unseparated portion of the electrode assembly to maintain its original conveying state. The battery recycling method provided in the embodiment of the present application, using the battery recycling devices provided in the above embodiments, can reduce to a certain extent the risk that the remaining portion of the electrode assembly is carried away from the conveying mechanism under the action of tension when the diaphragm separation mechanism separates the diaphragm, or when the pole piece separation mechanism separates the pole piece, so that the diaphragm and pole piece in the electrode assembly can be separated in sequence, so that the battery recycling method provided in the embodiment of the present application is not only applicable to the disassembly of dry electrode assemblies, but also to the disassembly of wet electrode assemblies, and can separate the components of the electrode assembly to facilitate the subsequent separate treatment of these parts, which can reduce the risk of environmental pollution to a certain extent. In some embodiments, the diaphragm includes a first diaphragm and a second diaphragm, and the pole piece includes a first pole piece and a second pole piece; the first diaphragm, the first pole piece, the second diaphragm and the second pole piece are stacked in sequence, and the second pole piece is in contact with the conveying surface;

[0047] The diaphragm separation mechanism and the pole piece separation mechanism are each provided with two,

[0048] The step of sequentially removing the diaphragm and the electrode sheet of the electrode assembly from the conveying mechanism by the diaphragm separation mechanism and the electrode sheet separation mechanism comprises:

[0049] Separating the first diaphragm from the first pole piece by one of the diaphragm separation mechanisms, and recovering the first diaphragm;

[0050] Separating the first pole piece from the second diaphragm by one of the pole piece separation mechanisms, and recovering the first pole piece;

[0051] Separating the second diaphragm from the second pole piece by another diaphragm separation mechanism, and recovering the second diaphragm;

[0052] The second pole piece is separated from the conveying surface by another pole piece separation mechanism, and the second pole piece is recovered.

[0053] By adopting the solution provided in this embodiment, the first diaphragm, the first pole piece, the second diaphragm and the second pole piece can be separated and recycled layer by layer, which can reduce the risk of mixing of different materials to a certain extent and facilitate subsequent processing.

[0054] In some embodiments, the battery recycling device further includes a loading mechanism;

[0055] Placing the electrode assembly on the conveying surface of the conveying mechanism comprises:

[0056] The electrode assembly is placed on the conveying surface by the loading mechanism.

[0057] By adopting the solution provided in this embodiment, the automation level of the battery recycling device can be further improved, and the disassembly efficiency and recycling efficiency of the electrode assembly can be improved.

[0058] In some embodiments, the battery recycling device further comprises a peeling mechanism;

[0059] Before placing the electrode assembly on the conveying surface of the conveying mechanism, the battery recycling method further includes:

[0060] The protective film of the battery cell is removed by the peeling mechanism to expose the end of the electrode assembly.

[0061] By adopting the solution provided in this embodiment, the automation level of the battery recycling device can be further improved, thereby improving the disassembly efficiency and recycling efficiency of the electrode assembly.

[0062] In some embodiments, the battery recycling device further comprises a flattening member, which is located in front of the diaphragm separation mechanism along the conveying direction of the conveying mechanism, and a channel is formed between the flattening member and the conveying surface for the electrode assembly to pass through in a flat manner;

[0063] Between placing the electrode assembly on the conveying surface of the conveying mechanism and sequentially removing the diaphragm and the electrode sheet of the electrode assembly from the conveying mechanism by the diaphragm separation mechanism and the electrode sheet separation mechanism, the method further includes:

[0064] The electrode assembly is flattened by the flattening member.

[0065] By adopting the solution provided in this embodiment, the risk of the components in the electrode assembly being lifted up when the electrode assembly is conveyed by the conveying mechanism can be reduced to a certain extent, so that the electrode assembly can be better fitted with the conveying mechanism, so that the subsequent diaphragm separation mechanism and the electrode sheet separation mechanism can pick up the corresponding components at the preset position. The preset position refers to the position where the above-mentioned adsorption position and the guide surface are located.

[0066] The above description is only an overview of the technical solution of the present application. In order to more clearly understand the technical means of the present application, it can be implemented in accordance with the contents of the specification. In order to make the above and other purposes, features and advantages of the present application more obvious and easy to understand, the specific implementation methods of the present application are listed below. BRIEF DESCRIPTION OF THE DRAWINGS

[0067] Various other advantages and benefits will become apparent to those of ordinary skill in the art by reading the detailed description of the preferred embodiments below. The accompanying drawings are only for the purpose of illustrating the preferred embodiments and are not to be considered as limiting the present application. Moreover, the same reference numerals are used throughout the drawings to represent the same components. In the drawings:

[0068] Figure 1 A schematic diagram of the structure of a battery recycling device according to some embodiments of the present application;

[0069] Figure 2 A schematic diagram of a partial structure of an electrode assembly according to some embodiments of the present application;

[0070] Figure 3 It is a schematic structural diagram of a battery recycling device in some other embodiments of the present application;

[0071] Figure 4 A schematic diagram of the structure of a diaphragm separation mechanism in a battery recycling device in some embodiments of the present application;

[0072] Figure 5 This is a schematic diagram of the structure of a feeding mechanism in a battery recycling device in some embodiments of the present application;

[0073] Figure 6 A schematic diagram of the structure of a sliding member in a battery recycling device in some embodiments of the present application;

[0074] Figure 7 A schematic diagram of the structure of a stripping mechanism in a battery recycling device in some embodiments of the present application;

[0075] Figure 8 A schematic diagram of the structure of a diaphragm winding mechanism in a battery recycling device in some embodiments of the present application;

[0076] Fig. 9 It is a schematic structural diagram of a battery recycling device in some other embodiments of the present application;

[0077] Fig.10 A schematic diagram of a battery recycling method according to some embodiments of the present application;

[0078] Fig.11 A schematic diagram of a battery recycling method according to some other embodiments of the present application;

[0079] Fig.12 A schematic diagram of a battery recycling method according to some other embodiments of the present application;

[0080] Fig.13 A schematic diagram of a battery recycling method according to some other embodiments of the present application;

[0081] Fig.14Schematic diagram of the process of battery recycling method according to other embodiments of the present application.

[0082] The reference numerals in the specific implementation manner are as follows:

[0083] 100, conveying mechanism; 110, first end; 120, second end;

[0084] 200, diaphragm separation mechanism; 210, adsorption assembly; 211, suction nozzle; 220, first driving assembly; 221, lifting assembly; 222, translation assembly;

[0085] 300, pole piece separation mechanism; 310, guide surface; 320, block;

[0086] 400, electrode assembly; 410, first diaphragm; 420, first pole piece; 430, second diaphragm; 440, second pole piece;

[0087] 500, feeding mechanism; 510, clamping assembly; 520, second driving assembly; 521, connecting member; 523, driving member; 524, first guide portion; 530, guide assembly; 531, second guide portion; 532, sliding member; 533, third guide portion;

[0088] 600, peeling mechanism; 610, tip; 620, third driving assembly;

[0089] 700, diaphragm winding mechanism; 710, frame; 720, winding frame; 730, telescopic driving assembly; 731, telescopic power source; 732, pushing assembly; 7321, first body; 7322, second body; 7323, space; 740, rotation driving assembly; 750, convex portion; 760, rod body;

[0090] 800, recycling bin;

[0091] 900, battery cell; 910, flattening part;

[0092] Y, conveying direction; X, projection direction; B, first direction; C, second direction; A, third direction. DETAILED DESCRIPTION

[0093] The following embodiments of the technical solution of the present application are described in detail in conjunction with the accompanying drawings. The following embodiments are only used to more clearly illustrate the technical solution of the present application, and are therefore only used as examples, and cannot be used to limit the scope of protection of the present application.

[0094] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by technicians in the technical field to which this application belongs; the terms used herein are only for the purpose of describing specific embodiments and are not intended to limit this application; the terms "including" and "having" in the specification and claims of this application and the above-mentioned figure descriptions and any variations thereof are intended to cover non-exclusive inclusions.

[0095] In the description of the embodiments of the present application, the technical terms "first", "second", etc. are only used to distinguish different objects, and cannot be understood as indicating or implying relative importance or implicitly indicating the number, specific order or primary and secondary relationship of the indicated technical features. In the description of the embodiments of the present application, the meaning of "multiple" is more than two, unless otherwise clearly and specifically defined.

[0096] Reference to "embodiments" herein means that a particular feature, structure, or characteristic described in conjunction with the embodiments may be included in at least one embodiment of the present application. The appearance of the phrase in various locations in the specification does not necessarily refer to the same embodiment, nor is it an independent or alternative embodiment that is mutually exclusive with other embodiments. It is explicitly and implicitly understood by those skilled in the art that the embodiments described herein may be combined with other embodiments.

[0097] In the description of the embodiments of the present application, the term "and / or" is only a description of the association relationship of the associated objects, indicating that there may be three relationships. For example, A and / or B can represent: A exists alone, A and B exist at the same time, and B exists alone. In addition, the character " / " in this article generally indicates that the associated objects before and after are in an "or" relationship.

[0098] In the description of the embodiments of the present application, the term "multiple" refers to more than two (including two). Similarly, "multiple groups" refers to more than two groups (including two groups), and "multiple pieces" refers to more than two pieces (including two pieces).

[0099] In the description of the embodiments of the present application, the technical terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, which are only for the convenience of describing the embodiments of the present application and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the embodiments of the present application.

[0100] In the description of the embodiments of the present application, unless otherwise clearly specified and limited, technical terms such as "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, and it can be the internal connection of two elements or the interaction relationship between two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the embodiments of the present application can be understood according to the specific circumstances.

[0101] At present, from the perspective of market development, the application of power batteries is becoming more and more extensive. Power batteries are not only used in energy storage power systems such as hydropower, thermal power, wind power and solar power stations, but also widely used in electric vehicles such as electric bicycles, electric motorcycles, electric cars, as well as military equipment and aerospace and other fields. With the continuous expansion of the application field of power batteries, the market demand is also constantly expanding.

[0102] The working principle of power batteries is realized through the principle of charge and discharge. During the long-term charge and discharge process, the properties of the internal materials of the power battery will change. After a certain period of use, the power battery will no longer be able to work normally and become a waste battery.

[0103] Used batteries contain a large amount of lithium compounds, inorganic salts, graphite, elemental copper, elemental aluminum and other substances, all of which have high recycling value. Some substances (such as lithium compounds) will seriously pollute the environment if they are directly discarded without treatment.

[0104] If you want to process used batteries, you generally need to separate the different substances in the used batteries first, and then process them together. In the related art, the substances in the battery are separated manually or by a battery recycling device. When the substances in the battery are separated manually, the workload is large and it is easy to cause harm to the health of the operator. The battery recycling device is only suitable for disassembling dry electrode assemblies. For wet electrode assemblies where there is liquid surface tension between the diaphragm and the electrode, it is impossible to effectively separate the various parts of the used battery.

[0105] In order to alleviate the above-mentioned problems, an embodiment of the present application provides a battery recycling device. By setting a limit assembly in the conveying mechanism, the unseparated part of the electrode assembly can maintain the original conveying state, and then the diaphragm separation mechanism and the electrode piece separation mechanism are used in conjunction to achieve layer-by-layer separation of each diaphragm and each electrode piece in the electrode assembly. It is not only suitable for the disassembly of dry electrode assemblies, but also for the disassembly of wet electrode assemblies.

[0106] The battery recycling device disclosed in the embodiment of the present application can be used alone to recycle waste batteries, or it can be used in conjunction with other equipment to achieve the processing of waste batteries, such as using the battery recycling device as a battery processing system for battery recycling equipment.

[0107] The battery processing system may include a waste battery conveying mechanism, a battery recycling device, and a pole piece processing device, etc., which may be specifically configured according to the use requirements. Among them, the waste battery conveying mechanism is used to convey the waste batteries to the station where the battery recycling device is located. The waste battery conveying mechanism may be a belt conveying mechanism, a plate chain conveying mechanism, or a mesh belt conveying mechanism, or a roller conveying mechanism, or other mechanisms that can achieve the above functions. The pole piece processing device may include pole piece cleaning equipment, pole piece recycling equipment, etc., which may be flexibly selected according to the use requirements.

[0108] Please refer to Figure 1 As shown, an embodiment of the present application provides a battery recycling device, which includes a conveying mechanism 100 , at least one diaphragm separation mechanism 200 , and at least one electrode sheet separation mechanism 300 .

[0109] The conveying mechanism 100 has a conveying surface and a limiting assembly. The conveying mechanism 100 is used to convey the electrode assembly 400, and can keep the unseparated part of the electrode assembly 400 in the original conveying state through the limiting assembly. The electrode assembly 400 includes a diaphragm and an electrode piece.

[0110] The diaphragm separation mechanism 200 is used to separate the diaphragm from the adjacent pole piece.

[0111] The pole piece separation mechanism 300 is used to separate the pole piece from the adjacent diaphragm and / or to separate the pole piece from the conveying surface.

[0112] The conveying mechanism 100 has a conveying surface, and the conveying mechanism 100 may also include a limit component, and may also include components with other functions according to the needs of use. Among them, the conveying mechanism 100 can be a belt conveying mechanism, a plate chain conveyor or a mesh belt conveying mechanism, or a roller conveying mechanism, or other mechanisms that can achieve the above functions. It can be understood that when the conveying mechanism 100 is a belt conveying mechanism, a plate chain conveyor or a mesh belt conveying mechanism, the conveying surface of the conveying mechanism 100 is the side of the conveyor belt that is used to contact the electrode assembly 400; when the conveying mechanism 100 is a roller conveying mechanism, the conveying surface of the conveying mechanism 100 is the plane where the lines of contact between each roller in the roller conveying mechanism and the electrode assembly 400 are located.

[0113] The limiting component can be any component that can keep the unseparated part of the electrode assembly 400 in the original conveying state and does not affect the separation of the corresponding parts of the electrode assembly by the diaphragm separation mechanism 200 and the pole piece separation mechanism 300, and can be an adsorption component, a vacuum component, or other components that can achieve the above functions. The unseparated part of the electrode assembly 400 refers to the part of the diaphragm and the pole piece that is not picked up by the diaphragm separation mechanism 200 and the pole piece separation mechanism 300, and is still on the conveying mechanism 100 and needs to be conveyed by the conveying mechanism 100. Maintaining the original conveying state means that the diaphragm and the electrode piece are stacked in the original stacking order, and the portion of the electrode assembly that is in contact with the conveying surface is still in contact with the conveying surface and is not lifted up by the separated portion, such as when the diaphragm separation mechanism picks up one of the diaphragms, the electrode piece in contact with the diaphragm is not lifted up and is still in contact with the other unseparated portions of the electrode assembly, or when the diaphragm separation mechanism picks up one of the electrode pieces, the diaphragm in contact with the electrode piece is not lifted up by the electrode piece and is still in contact with the other unseparated portions of the electrode assembly. It is understandable that, depending on the structure and use function of the limit assembly, the limit assembly can be fixedly installed on the above-mentioned conveying assembly or on one side of the conveying assembly, or can be installed on the above-mentioned conveying assembly or on one side of the conveying assembly in a movable connection manner.

[0114] The diaphragm separation mechanism 200 is a mechanism that can separate the diaphragm from the adjacent pole piece by grabbing, sucking, etc. It can be a robot, an adsorption mechanism, or other mechanisms that can achieve the above functions.

[0115] The electrode piece separation mechanism 300 is a mechanism capable of separating the electrode piece from the unseparated portion of the electrode assembly 400 or the conveying mechanism 100, and may be a robot, an adsorption mechanism, or other mechanisms capable of achieving the above functions.

[0116] In the related art, the electrode assembly to be disassembled generally includes an electrode assembly in a roll or a block, and a protective film covering the outside of the electrode assembly. Whether it is an electrode assembly in a roll or an electrode assembly in a block, the electrode assembly generally has a plurality of diaphragms and a plurality of pole pieces stacked in layers. When the electrode assembly is in a roll, the ends are generally covered by the diaphragm and need to be exposed by cutting.

[0117] When disassembling the waste batteries, firstly, the waste batteries are processed, the protective film covering the waste batteries is removed, and the end of the electrode assembly 400 is exposed, and then the electrode assembly 400 is placed on the conveying surface of the conveying mechanism 100. At this time, the arrangement order of the components in the electrode assembly 400 is, from the conveying surface outward, the electrode piece, the diaphragm, the electrode piece, the diaphragm...

[0118] It should be noted that when the electrode assembly is arranged in a roll, the electrode assembly 400 is placed on the conveying surface of the conveying mechanism 100 in the above process. Generally, the end of the electrode assembly 400 is firstly laid flat on the conveying surface by dragging the end of the electrode assembly 400, and then the conveying mechanism is operated and the friction between the part of the electrode assembly 400 placed on the conveying surface and the conveying surface is used to make the other part of the electrode assembly 400 roll, so as to gradually unfold and be driven to be laid flat on the conveying surface.

[0119] In this embodiment, one or two of the diaphragm separation mechanism 200 and the pole piece separation mechanism 300 can be provided according to the use requirements.

[0120] For ease of understanding, the diaphragm includes a first diaphragm 410 and a second diaphragm 430, and the pole piece includes a first pole piece 420 and a second pole piece 440. From the conveying surface outward, the second pole piece 440, the second diaphragm 430, the first pole piece 420, and the first diaphragm 410 are sequentially arranged. The diaphragm separation mechanism 200 and the pole piece separation mechanism 300 are respectively provided with two, and the working principle of the battery recycling device provided in the embodiment of the present application is described:

[0121] The two diaphragm separation mechanisms 200 and the two pole piece separation mechanisms 300 are arranged in sequence along the conveying direction Y of the conveying mechanism 100 in the order of diaphragm separation mechanism 200 , pole piece separation mechanism 300 , diaphragm separation mechanism 200 and pole piece separation mechanism 300 .

[0122] The electrode assembly 400 is conveyed by the conveying mechanism 100. When the electrode assembly 400 passes through the station where the first diaphragm separation mechanism 200 is located, the diaphragm separation mechanism 200 lifts the end of the first diaphragm 410 to separate the first diaphragm 410 from other parts of the electrode assembly 400 and detaches from the conveying surface of the conveying mechanism 100. During this period, the remaining part of the electrode assembly 400 continues to move forward under the conveyance of the conveying mechanism 100.

[0123] That is, the other components in the electrode assembly 400 (the second electrode sheet 440, the second diaphragm 430 and the first electrode sheet 420) continue to be conveyed forward. When moving to the workstation where the first electrode sheet separation mechanism 300 is located, the electrode sheet separation mechanism 300 lifts the end of the first electrode sheet 420 and guides it outside the conveying surface. With the operation of the conveying mechanism 100, the other parts of the first electrode sheet 420 can be separated from the remaining parts of the electrode assembly 400 (the second electrode sheet 440 and the second diaphragm 430).

[0124] Afterwards, the remaining part of the electrode assembly 400 (the second electrode plate 440 and the second diaphragm 430) continues to move forward under the conveyance of the conveying mechanism 100. When it moves to the workstation where the second diaphragm separation mechanism 200 is located, the diaphragm separation mechanism 200 lifts the end of the second diaphragm 430 to separate it from the second electrode plate 440 in the electrode assembly 400. During this period, the second electrode plate 440 continues to move forward under the conveyance of the conveying mechanism 100. As the conveying mechanism 100 operates, the second diaphragm 430 is gradually separated from the second electrode plate 440.

[0125] Afterwards, the second electrode sheet 440 continues to move forward under the transportation of the conveying mechanism 100. When it moves to the workstation where the second electrode sheet separation mechanism 300 is located, the electrode sheet separation mechanism 300 lifts the end of the second electrode sheet 440 and guides it outside the conveying surface. As the conveying mechanism 100 operates, the second electrode sheet 440 can be completely separated from the conveying mechanism 100.

[0126] It can be understood that when it is set as a diaphragm separation mechanism 200 or a pole piece separation mechanism 300, the battery recovery device provided in this embodiment can be used in conjunction with other equipment, or the diaphragm separation mechanism 200 or the pole piece separation mechanism 300 can be set in a manner that can move relative to the conveying mechanism 100 to achieve the above operations.

[0127] For example, when there is one diaphragm separation mechanism 200, the first diaphragm 410 can be separated from other components in the electrode assembly 400 by the diaphragm separation mechanism 200 in this embodiment, and the second diaphragm 430 can be separated from other components in the electrode assembly 400 by other equipment; the diaphragm separation mechanism 200 can also be set to be movable relative to the conveying mechanism 100. When the electrode assembly 400 is transported by the conveying mechanism 100, the first diaphragm 410 is first separated from other components in the electrode assembly 400 by the diaphragm separation mechanism 200, and then the first pole piece 420 is separated from other components in the electrode assembly 400 by the pole piece separation mechanism 300. During this period, the diaphragm separation mechanism 200 moves to the rear of the pole piece separation mechanism 300, and then the second diaphragm 430 is separated from other components in the electrode assembly 400 by it.

[0128] Regardless of which of the above methods is adopted, since the conveying surface and the limiting assembly are provided in the conveying mechanism 100, when the electrode assembly 400 is disassembled by the battery recycling device provided in the embodiment of the present application, the electrode assembly 400 can be laid flat on the conveying surface in a stacked manner, and when the diaphragm separation mechanism 200 separates the diaphragm, or when the pole piece separation mechanism 300 separates the pole piece, the limiting assembly can keep the unseparated part of the electrode assembly 400 in the original conveying state. In this way, the risk of the remaining part of the electrode assembly 400 being taken away from the conveying mechanism 100 under the action of tension when the diaphragm separation mechanism 200 separates the diaphragm, or when the pole piece separation mechanism 300 separates the pole piece, can be reduced to a certain extent, so that the diaphragm and the pole piece in the electrode assembly 400 can be separated in sequence.

[0129] The battery recycling device provided in the embodiment of the present application includes a conveying mechanism 100, at least one diaphragm separation mechanism 200 and at least one pole piece separation mechanism 300, wherein the conveying mechanism 100 has a conveying surface and a limiting component, and the conveying mechanism 100 is used to convey the electrode assembly 400, and can keep the unseparated part of the electrode assembly 400 in the original conveying state through the limiting component. The diaphragm separation mechanism 200 can separate the diaphragm from other components of the electrode assembly 400. The pole piece separation mechanism 300 can separate the pole piece from other components of the electrode assembly 400, and / or separate the pole piece from the conveying surface. The battery recycling device provided in the embodiment of the present application can reduce to a certain extent the risk that the remaining part of the electrode assembly 400 is carried away from the conveying mechanism 100 under the action of tension when the diaphragm separation mechanism 200 separates the diaphragm, or the electrode sheet separation mechanism 300 separates the electrode sheet, so that the diaphragm and the electrode sheet in the electrode assembly 400 can be separated in sequence. In this way, the battery recycling device provided in the embodiment of the present application is not only suitable for the disassembly of dry electrode assemblies, but also for the disassembly of wet electrode assemblies, and can realize the separate separation of each component in the electrode assembly to facilitate the subsequent separate processing of these parts, which can reduce the risk of environmental pollution to a certain extent.

[0130] In some embodiments, the diaphragm includes a first diaphragm 410 and a second diaphragm 430, and the pole piece includes a first pole piece 420 and a second pole piece 440. The first diaphragm 410, the first pole piece 420, the second diaphragm 430 and the second pole piece 440 are stacked in sequence, and the second pole piece 440 is in contact with the conveying surface.

[0131] like Figure 2 As shown, two electrode sheet separation mechanisms 300 are provided. The two electrode sheet separation mechanisms 300 are used to guide the first electrode sheet 420 and the second electrode sheet 440 to the outside of the conveying mechanism 100 respectively.

[0132] The first diaphragm 410 and the second diaphragm 430 are generally made of the same material, or they can be made of different materials. The size of the first diaphragm 410 is generally larger than the size of other components in the electrode assembly 400. The first pole piece 420 is a larger pole piece in the battery cell, and the second pole piece 440 is a smaller pole piece in the battery cell.

[0133] The two pole piece separation mechanisms 300 are respectively used to guide the first pole piece 420 and the second pole piece 440 to the outside of the conveying mechanism 100, which means that one pole piece separation mechanism 300 is used to guide the first pole piece 420 to the outside of the conveying mechanism 100, and the other pole piece separation mechanism 300 is used to guide the second pole piece 440 to the outside of the conveying mechanism 100.

[0134] There are two pole piece separation mechanisms 300, compared with one pole piece separation mechanism 300, so that the first pole piece 420 and the second pole piece 440 can be recovered separately without moving the position of the pole piece separation mechanism 300, so that the recovery of the pole pieces can be faster, and the recovery efficiency of each component of the electrode assembly 400 can be improved to a certain extent.

[0135] In some embodiments, the limiting component is a vacuum component, and the vacuum component is located below the conveying surface or in the space surrounded by the conveying surface. The vacuum component is used to make the air pressure below the conveying surface lower than the air pressure above the conveying surface, or to make the air pressure in the space surrounded by the conveying surface lower than the air pressure outside the space surrounded by the conveying surface.

[0136] The conveying mechanism in this embodiment may be a vacuum conveying mechanism. The vacuum conveying mechanism generally includes a conveyor belt and a vacuum pumping assembly. The conveyor belt may be provided with air flow holes. The vacuum pumping assembly may include a vacuum pump, and may also include a pipeline used in conjunction with the vacuum pump, etc., which may be specifically set according to the use requirements.

[0137] The vacuum assembly can be arranged in different ways according to the arrangement of the conveying surface, the diaphragm separation mechanism, and the electrode separation mechanism. For example, if the conveying surface is arranged in a single plane, the vacuum assembly can be arranged below the conveying surface, so that the air pressure below the conveying surface is less than the air pressure above the conveying surface, so that the diaphragm and the electrode on the conveying surface can be arranged in a close relationship under the action of air pressure, and the laminate composed of the diaphragm and the electrode is arranged in a close relationship with the conveying surface. If the conveying surface adopts an annular structure, the vacuum assembly can be arranged in the space surrounded by the conveying surface, so that the air pressure in the space surrounded by the conveying surface is less than the air pressure outside the space surrounded by the conveying surface, so that the diaphragm and the electrode on the conveying surface can be arranged in a close relationship under the action of air pressure, and the laminate composed of the diaphragm and the electrode is arranged in a close relationship with the conveying surface. By adopting the scheme provided in this embodiment, the conveying mechanism 100 can be a vacuum conveying mechanism, so that the conveying mechanism 100 can be equipped with a limit assembly without modification, which can reduce the design and operation difficulty of the conveying mechanism to a certain extent, and can improve the assembly efficiency of the battery recycling device.

[0138] In some embodiments, Figure 1 As shown, the electrode piece separation mechanism 300 has a guide surface 310 which is arranged obliquely relative to the conveying surface of the conveying mechanism 100. The guide surface 310 is used to guide the first electrode piece 420 and / or the second electrode piece 440 to the outside of the conveying mechanism 100.

[0139] The guide surface 310 may be a plane surface or a curved surface, a continuous surface or a discontinuous surface, and may be specifically set according to usage requirements.

[0140] When in use, the height of the guide surface 310 can be set according to the use requirements of the electrode separation mechanism 300. When the electrode separation mechanism 300 is used to separate the first electrode 420 from other components in the electrode assembly 400, the guide surface 310 can be set so that the bottom surface is flush with the bottom surface of the first electrode 420, so that when the electrode assembly 400 is transported by the conveying mechanism 100 to the position where the guide surface 310 is located, the first electrode 420 can be guided to the outside of the conveying mechanism 100 along the direction of the guide surface 310 without the need for human operation. When the electrode separation mechanism 300 is used to separate the second electrode 440 from the conveying surface, the guide surface 310 can be set so that the bottom surface is flush with the bottom surface of the second electrode 440, so that when the second electrode 440 is transported by the conveying mechanism 100 to the position where the guide surface 310 is located, the second electrode 440 can be guided to the outside of the conveying mechanism 100 along the direction of the guide surface 310 without the need for human operation.

[0141] The pole piece separation mechanism 300 separates the first pole piece 420 and / or the second pole piece 440 through the guide surface 310. The operation is simple, and the structure adopted by the pole piece separation mechanism 300 can also be very simple, which can reduce the production and purchase costs of the pole piece separation mechanism 300 and facilitate assembly.

[0142] In some embodiments, the conveying surface is an annular structure. The two guide surfaces 310 are disposed on opposite sides of the conveying surface.

[0143] The two guide surfaces 310 are arranged on two opposite sides of the conveying surface, which means that along the direction perpendicular to the conveying direction, one guide surface 310 is arranged on one side of the conveying surface, and the other guide surface 310 is arranged on the other side of the conveying surface, that is, one guide surface 310 is located on the upper side of the annular structure formed by the conveying surfaces, and the other guide surface 310 is located on the lower side of the annular structure formed by the conveying surfaces.

[0144] The operating principle of the battery recycling device provided in this embodiment is as follows:

[0145] During the conveying process of the electrode assembly 400 through the conveying mechanism 100, the first diaphragm 410 is first removed. When passing through the first guide surface 310 in the conveying direction Y, the first electrode piece 420 is guided by the guide surface 310 away from the conveying surface and separated from other components in the electrode assembly 400. At the same time, the remaining part of the electrode assembly 400 (i.e., the second diaphragm 430 and the second electrode piece 440) passes through the gap between the guide surface 310 and the conveying surface, passes through the end of the conveying mechanism 100, moves with the conveying surface to the lower surface of the conveying surface, and continues to move with the conveying surface. When reaching the second guide surface 310, the second electrode piece 440 is guided by the guide surface 310 away from the conveying surface.

[0146] It can be seen that the two guide surfaces 310 are disposed on both sides of the conveying mechanism 100. Compared with the two guide surfaces 310 being located on the same side of the conveying mechanism 100, the length of the conveying mechanism 100 can be shortened, and the battery recycling device can be compact in structure and occupy a small space.

[0147] In some embodiments, Figure 1 As shown, the conveying surface has a first end 110 and a second end 120 that are relatively arranged along its conveying direction Y. The first end 110 is the starting end of the conveying surface. The conveying surface in this embodiment is a flat annular structure, and the conveying direction Y is the length direction of the conveying surface. The first end 110 and the second end 120 are the two ends in the length direction of the conveying surface. The starting end of the conveying surface refers to the end where the starting point and the end point of the conveying surface are located. Since the conveying surface is an annular structure, the starting point and the end point are one point, and the loading position of the electrode assembly can be used as the starting point and the end point of the conveying surface.

[0148] Along the conveying sequence, the guide surface 310 located in the front corresponds to the position of the second end 120 , and a gap is formed between the guide surface 310 and the conveying surface for the second diaphragm 430 and the second pole piece 440 to pass through.

[0149] The conveying sequence refers to the order in which the electrode assembly first passes through one guide surface 310 and then passes through another guide surface 310 during the battery recycling operation. The guide surface 310 located in the front refers to the guide surface 310 that the electrode assembly passes through first during the above process.

[0150] The operating principle of the battery recycling device provided in this embodiment is as follows:

[0151] During the transportation of the electrode assembly 400 through the conveying mechanism 100, the first diaphragm 410 is first removed. When passing through the guide surface 310 located in the front, the first electrode piece 420 is guided by the guide surface 310 and can cross the second end 120 of the conveying mechanism 100 and fall. At the same time, the remaining part of the electrode assembly 400 (i.e., the second diaphragm 430 and the second electrode piece 440) passes through the gap between the above-mentioned guide surface 310 and the conveying surface, passes through the second end 120 and reaches the lower surface of the conveying surface, and continues to be transported.

[0152] By adopting the solution provided in this embodiment, the guide surface 310 located above the conveying mechanism 100 is located above the second end 120, so that after the electrode assembly 400 with the first diaphragm 410 removed reaches the position of the guide surface 310 under the conveyance of the conveying mechanism 100, the first electrode piece 420 in the electrode assembly 400 can cross the second end 120 of the conveying mechanism 100 after passing through the guide surface 310 and fall, thereby reducing the risk of the first electrode piece 420 falling onto the conveying mechanism 100 again after being separated by the electrode piece separation mechanism 300 to a certain extent, and also allowing the remaining part of the electrode assembly 400 on the conveying mechanism 100 to be normally conveyed, and facilitating the recovery of the first electrode piece 420.

[0153] In some embodiments, Figure 1 As shown, the direction perpendicular to the conveying direction Y is taken as the projection direction X, and the orthographic projections of the two guide surfaces 310 along the projection direction X do not overlap.

[0154] The conveying direction Y refers to the straight line direction from the first end to the second end.

[0155] The orthographic projections of the two guide surfaces 310 along the projection direction X do not overlap, which means that there is a gap between the orthographic projections of the two guide surfaces 310 along the projection direction X, or the two are connected but have no overlapping area.

[0156] By adopting the solution provided in this embodiment, the first pole piece 420 and the second pole piece 440 can fall to different positions after being guided by the two guide surfaces 310, which can reduce the risk of mixing of the first pole piece 420 and the second pole piece 440 to a certain extent, thereby facilitating the subsequent separate recovery of the two.

[0157] In some embodiments, along the conveying sequence, the guide surface 310 located at the rear corresponds to the position of the first end 110, that is, the two guide surfaces 310 are respectively arranged at the two ends of the conveying mechanism 100. The guide surface 310 located at the rear refers to the guide surface 310 that is passed later during the process of the electrode assembly being conveyed by the conveying surface. In this way, the distance between the two guide surfaces 310 can be maximized, so that the distance between the first electrode piece 420 and the second electrode piece 440 after being guided by the guide surface 310 and dropped by the conveying mechanism 100 to the ground can be larger, which can reduce the risk of mixing of the two after they fall to a certain extent, and provide convenience for the separate recovery of the two.

[0158] In some embodiments, Figure 1 As shown, the pole piece separation mechanism 300 includes a block 320. The block 320 has an inclined surface for contacting the first pole piece 420 and / or the second pole piece 440, and the inclined surface is a guide surface 310.

[0159] The pole piece separation mechanism 300 adopts the structure provided in this embodiment, which has a simple structure and is easy to install.

[0160] In some embodiments, Figure 3 As shown, the battery recycling device further includes a recycling box 800 . The recycling box 800 is disposed corresponding to the guide surface 310 and is used to receive the first pole piece 420 and / or the second pole piece 440 that falls after being guided by the guide surface 310 .

[0161] The recovery box 800 may be any box that can store the first pole piece 420 and / or the second pole piece 440 .

[0162] The recycling box 800 and the guide surface 310 are arranged correspondingly, which means that the number of the two is the same and the positions are corresponding. The corresponding positions mean that the pole pieces that fall after being guided by the guide surface 310 can directly fall into the recycling box 800.

[0163] When in use, the recycling box 800 can be placed under the guide surface 310, so that the first pole piece 420 and / or the second pole piece 440 separated after being guided by the guide surface 310 can directly fall into the recycling box 800 to achieve automatic recycling of the first pole piece 420 and / or the second pole piece 440.

[0164] The provision of the recycling box 800 facilitates the centralized collection of the first pole piece 420 and the second pole piece 440 , as well as subsequent processing.

[0165] In some embodiments, Figure 1 and Figure 3 As shown, there are two diaphragm separation mechanisms 200. The two diaphragm separation mechanisms 200 are used to separate the first diaphragm 410 and the second diaphragm 430 respectively, so as to separate the first diaphragm 410 and the second diaphragm 430 from other components of the electrode assembly 400 respectively.

[0166] In this embodiment, the structures of the two diaphragm separation mechanisms 200 may be the same or different, depending on the usage requirements of the two.

[0167] Compared with a diaphragm separation mechanism 200 having only one diaphragm separation mechanism 200, the first diaphragm 410 and the second diaphragm 430 can be recovered separately without moving the position of the diaphragm separation mechanism 200, so that the recovery of the diaphragm can be faster, which can improve the recovery efficiency of each component of the electrode assembly 400 to a certain extent.

[0168] In some embodiments, Figure 3 and Figure 4 As shown, the membrane separation mechanism 200 includes an adsorption assembly 210 and a first drive assembly 220. The first drive assembly 220 is drivingly connected to the adsorption assembly 210 to drive the adsorption assembly 210 to reciprocate between the adsorption position and the release position. The adsorption assembly 210 is used to adsorb the first membrane 410 and / or the second membrane 430 at the adsorption position, and to release the adsorbed first membrane 410 and / or the second membrane 430 at the release position.

[0169] The adsorption component 210 may include an air pump and a suction nozzle 211, etc., and may also include a vacuum pump and a suction head, etc., which may be specifically configured according to usage requirements.

[0170] The first driving component 220 can select a linear driving mechanism that can drive the adsorption component 210 to perform linear motion, such as a cylinder, a hydraulic cylinder, etc., according to the needs of use, or a combined driving mechanism that can drive the adsorption component 210 to perform curved motion, such as a combination of multiple cylinders, hydraulic cylinders, motors, etc.

[0171] The adsorption position and the release position are two virtual positions, which can be determined according to specific circumstances. Among them, the adsorption position is generally close to the conveying mechanism 100, which can make the first diaphragm 410 and / or the second diaphragm 430 adsorbed by the adsorption component 210. The release position is generally a position outside the conveying mechanism 100, which can be the location of the recovery device for holding the first diaphragm 410 and / or the second diaphragm 430, or a position for facilitating the collection of the first diaphragm 410 and / or the second diaphragm 430.

[0172] It should be noted that the first drive component 220 in this embodiment can be fixedly connected to the adsorption component 210, or movably connected, or detachably connected to the adsorption component 210, which can be set specifically according to the needs of use. The above-mentioned detachable connection means that the two can be separated from each other when not in use, and then connected for use when in use. If the first drive component 220 is connected to the adsorption component 210 through a clamp with an opening and closing function, the first drive component 220 can clamp the adsorption component 210 through the clamp when in use, and drive it to move between the adsorption position and the release position. When not in use, the clamp can be controlled to open so that the clamp releases the adsorption component 210. Alternatively, the first drive component 220 is connected to the adsorption component 210 through an electromagnetic component, and the first drive component 220 can be connected to the adsorption component 210 through the electromagnetic component when in use, and drive it to move between the adsorption position and the release position. When not in use, the electromagnetic component can be separated from the adsorption component 210 by disconnecting the power supply of the electromagnetic component. Of course, in other embodiments, the first drive component 220 can also be detachably connected to the adsorption component 210 in other ways.

[0173] The membrane separation mechanism 200 adopts the structure provided in this embodiment, including an adsorption component 210 and a first drive component 220, wherein the first drive component 220 is drivingly connected to the adsorption component 210, and can control the adsorption component 210 to move between the adsorption position and the release position. In this way, the first membrane 410 and / or the second membrane 430 can be captured and released by adsorption, which is not easy to damage the structure of the first membrane 410 and / or the second membrane 430, and is convenient for subsequent recycling.

[0174] In some embodiments, Figure 4 As shown, the first driving assembly 220 includes a lifting assembly 221 and a translation assembly 222. The adsorption assembly 210 is connected to the lifting assembly 221, and the lifting assembly 221 is connected to the translation assembly 222. The lifting assembly 221 is used to drive the adsorption assembly 210 to rise or fall relative to the conveying surface, and the translation assembly 222 is used to drive the lifting assembly 221 to translate in a direction parallel to the conveying surface.

[0175] The lifting assembly 221 and the translation assembly 222 in this embodiment can be formed by one body or a combination of multiple bodies. In addition, the two can use components with the same structure or components with different structures.

[0176] The lifting assembly 221 and the translation assembly 222 in this embodiment can adopt various structures respectively. For ease of understanding, an example is given below. For example, the lifting assembly 221 adopts a vertically arranged cylinder, hydraulic cylinder, etc., and the translation assembly 222 adopts a cylinder, hydraulic cylinder, etc. arranged parallel to the conveying surface. Alternatively, the structure shown in the figure is adopted.

[0177] The first driving assembly 220 adopts the structure provided in this embodiment, which has a simple structure and is easy to design and assemble.

[0178] In some embodiments, Figure 1 and Figure 3 As shown, the battery recycling device further includes a loading mechanism 500, and the loading mechanism 500 is used to place the electrode assembly 400 on the conveying surface.

[0179] The above-mentioned loading mechanism 500 is used to place the electrode assembly 400 on the conveying surface, which generally means that the loading mechanism 500 can pick up the electrode assembly 400 and place the electrode assembly 400 on the conveying surface of the conveying mechanism 100 in a flat manner.

[0180] The feeding mechanism 500 in this embodiment can be any mechanism or a combination of multiple mechanisms that can place the electrode assembly 400 on the conveying surface of the conveying mechanism 100, and can be set according to the use requirements. The setting of the feeding mechanism 500 can further improve the automation degree of the battery recycling device and improve the disassembly efficiency and recycling efficiency of the electrode assembly 400.

[0181] In some embodiments, Figure 5 As shown, the feeding mechanism 500 includes a clamping assembly 510 and a second driving assembly 520. The clamping assembly 510 is used to clamp and release the electrode assembly 400. The clamping assembly 510 is connected to the second driving assembly 520. The second driving assembly 520 is used to drive the clamping assembly 510 to move between a material taking position away from the conveying surface and a material discharging position close to the conveying surface.

[0182] The clamping assembly 510 refers to an assembly with an opening and closing function, which can clamp and release the electrode assembly 400. It should be noted that the clamping and releasing of the electrode assembly 400 mentioned here can be clamping and releasing the entire electrode assembly 400 when the size of the electrode assembly 400 is small, or can be clamping and releasing the end of the electrode assembly 400; when the size of the electrode assembly 400 is large, it generally refers to clamping and releasing the end of the electrode assembly 400.

[0183] The second driving component 520 can select a linear driving mechanism that can drive the adsorption component 210 to perform linear motion, such as a cylinder, a hydraulic cylinder, etc., according to the needs of use, or a combined driving mechanism that can drive the adsorption component 210 to perform curved motion, such as a combination of multiple cylinders, hydraulic cylinders, motors, etc.

[0184] The material taking position and the material discharging position are two virtual positions, which can be determined according to specific circumstances. Among them, the material taking position is generally the position of the electrode assembly 400 in the initial state. The material discharging position is generally a position close to the conveying surface, at which the clamping assembly 510 releases the electrode assembly 400 and the electrode assembly 400 can fall onto the conveying surface.

[0185] The feeding mechanism 500 adopts the structure provided in this embodiment, which has a simple structure and is easy to operate.

[0186] In some embodiments, Figure 5 As shown, the second driving assembly 520 includes a connecting member 521, a first guide portion 524 and a driving member 523. The clamping assembly 510 is connected to the connecting member 521. The connecting member 521 is slidably disposed on the first guide portion 524. The driving member 523 is used to drive the connecting member 521 to move along the first guide portion 524.

[0187] The connecting member 521 can be a rod body 760, a bracket, etc. connected to the clamping assembly 510, and can be specifically designed according to usage requirements.

[0188] The first guide portion 524 may be a straight structure, a curved structure, or an irregular structure capable of guiding the connection member 521 to move between the first position and the second position. When the connection member 521 is located at the first position, the clamping assembly 510 is located at the material taking position, and when the connection member 521 is located at the second position, the clamping assembly 510 is located at the material discharging position.

[0189] The driving member 523 can be selected according to the needs of use, and can be a linear driving mechanism that can drive the connecting member 521 to perform linear motion along the extension direction of the first guide portion 524, such as a cylinder, a hydraulic cylinder, etc., or a combined driving mechanism that can drive the connecting member 521 to perform curved motion along the extension direction of the first guide portion 524, such as a combination of multiple cylinders, hydraulic cylinders, motors, etc.

[0190] The second driving assembly 520 adopts the structure provided in this embodiment, which has a simple structure and is easy to assemble.

[0191] In some embodiments, the first guide portion 524 includes a guide groove, and the connecting member 521 is slidably installed in the guide groove.

[0192] The first guide portion 524 adopts a guide groove, which has a simple structure and is easy to process.

[0193] In some embodiments, Figure 5 As shown, the feeding mechanism 500 further includes a guide assembly 530. The guide assembly 530 is used to cooperate with the first guide portion 524 to guide the connecting member 521 to move along a preset path.

[0194] The preset path refers to a path between the first position and the second position mentioned above. The path can be set manually. Generally, a path with a short moving distance and which can avoid intermediate obstacles is selected. The specific path can be designed according to usage needs.

[0195] The guide assembly 530 is a guide structure used to cooperate with the first guide portion 524 so that the connector 521 can move along a preset path. The guide assembly 530 can be arranged in a variety of forms, depending on the structure of the first guide portion 524, the drive member 523, and the movement requirements of the electrode assembly 400.

[0196] The guide assembly 530 can cooperate with the first guide portion 524 to limit the connection member 521 to move along a preset path, so that the electrode assembly 400 clamped by the clamping assembly 510 can move from the material taking position to the material discharging position along the preset path without easily hitting obstacles, thereby achieving smooth movement of the electrode assembly 400.

[0197] In some embodiments, Figure 5 and Figure 6 As shown, the guide assembly 530 includes a second guide portion 531 and a sliding member 532 slidably disposed on the second guide portion 531. A third guide portion 533 is disposed on the sliding member 532. The connecting member 521 is slidably disposed on the third guide portion 533 along a first direction B. The sliding member 532 is slidably disposed on the second guide portion 531 along a second direction C. The second direction C and the first direction B are arranged at an angle.

[0198] The structures of the second guide portion 531 and the third guide portion 533 may be the same or different. For example, the second guide portion 531 and the third guide portion 533 may both adopt the structure of a guide groove, or both adopt the structure of a slide rail, or one may adopt the structure of a guide groove and the other may adopt the structure of a slide rail, which may be specifically configured according to the use requirements.

[0199] The second direction C is generally a direction parallel to the conveying direction Y, or other directions at an angle to the conveying direction Y, which can be determined according to the use requirements. The first direction B can be a vertical direction perpendicular to the conveying direction Y, or other directions at an angle to the vertical direction, which can be determined according to the use requirements. As long as the connecting member 521 is controlled to move along the second direction C and the first direction B, the connecting member 521 can be moved along the preset path.

[0200] The working principle of the feeding mechanism 500 used in this embodiment is as follows:

[0201] When in use, a part of the connecting member 521 moves along the extension direction of the first guide portion 524 under the drive of the driving member 523. At the same time, another part of the connecting member 521 moves along the second direction C or the third direction A under the guidance of the corresponding parts in the guide assembly 530, so that the connecting member 521 can move along the preset path in a relatively stable posture.

[0202] The guide assembly 530 adopts the structure provided in this embodiment, which is simple and stable and easy to design and process.

[0203] In some embodiments, Figure 1 and Figure 3 As shown, the battery recycling device further includes a stripping mechanism 600. The stripping mechanism 600 is used to remove the protective film of the battery cell 900 so that the end of the electrode assembly 400 is exposed.

[0204] The peeling mechanism 600 refers to a mechanism having at least the following function: being able to pierce the protective film of the battery so that one end of the electrode assembly 400 is exposed.

[0205] The peeling mechanism 600 may have only the above functions, or may have other functions in addition to the above functions, which may be specifically set according to usage requirements.

[0206] It is understandable that when one end of the electrode assembly 400 is not exposed after the protective film is removed, the corresponding diaphragm can also be punctured or cut by the peeling mechanism 600 .

[0207] The working principle of the battery recycling device provided in this embodiment is as follows:

[0208] First, the protective film on the outside of the waste battery is punctured by the stripping mechanism 600, and then the protective film can be removed manually, by the stripping mechanism 600 or by other equipment. At this time, the end of the electrode assembly 400 is exposed, and then the end of the electrode assembly 400 is grabbed by the loading mechanism 500 and placed in a flat manner on the conveying surface of the conveying mechanism 100. As the conveying mechanism 100 operates, the other parts of the electrode assembly 400 can be conveyed in a flat manner in contact with the conveying surface, and then the first diaphragm 410, the first pole piece 420, the second diaphragm 430 and the second pole piece 440 are separated in turn by the diaphragm separation mechanism 200 and the pole piece separation mechanism 300.

[0209] The provision of the stripping mechanism 600 can further improve the automation level of the battery recycling device, thereby improving the disassembly efficiency and recycling efficiency of the electrode assembly 400 .

[0210] In some embodiments, Figure 7 As shown, the stripping mechanism 600 includes a tip 610 and a third driving assembly 620. The third driving assembly 620 is used to drive the tip 610 to reciprocate between the stripping position and the avoidance position, and the tip 610 is used to pierce the battery cell 900 to remove the protective film at the stripping position, and is used to be outside the moving path of the electrode assembly when in the avoidance position.

[0211] The tip 610 may be the edge of a blade, the edge of a pair of scissors, the tip 610 of a needle, or other structures that can achieve cutting of the protective film, and the specific structure can be selected according to usage requirements.

[0212] The third driving component 620 can select a linear driving mechanism that can drive the tip 610 to perform linear motion, such as a cylinder, a hydraulic cylinder, etc., according to the needs of use, or a combined driving mechanism that can drive the tip 610 to perform curved motion, such as a combination of multiple cylinders, hydraulic cylinders, motors, etc.

[0213] The moving path of the electrode assembly refers to the path along which the electrode assembly moves from the initial position to the conveying mechanism.

[0214] The stripping position and the avoidance position are two virtual positions, which can be determined according to specific circumstances. Among them, the stripping position is generally a position close to the waste battery (also a battery cell) whose protective film has not been stripped, and the tip 610 can pierce the protective film of the waste battery at this position. The avoidance position is generally a position away from the above-mentioned waste battery, and at this position, it will not cause adverse effects on the movement of the electrode assembly to the conveying mechanism under the action of the feeding mechanism.

[0215] The third driving component 620 can be a lifting driving component that can control the upward and downward movement of the tip 610, or a translation driving component that can control the left and right movement of the tip 610, or other driving components that can control the tip 610 to move along an irregular path. The specific configuration can be based on usage requirements.

[0216] The peeling mechanism 600 adopts the structure provided in this embodiment, which has a simple structure and is easy to operate.

[0217] In some embodiments, Figure 1 and Figure 3 As shown, the battery recycling device further includes at least one separator winding mechanism 700. The separator winding mechanism 700 is used to wind the first separator 410 and / or the second separator 430 separated by the separator separation mechanism 200 into a roll.

[0218] The diaphragm winding mechanism 700 may employ a winding device capable of winding the diaphragm into a roll.

[0219] The provision of the membrane winding mechanism 700 facilitates winding the first membrane 410 and / or the second membrane 430 into a roll and collecting them for subsequent processing.

[0220] In some embodiments, the diaphragm winding mechanism 700 and the diaphragm separating mechanism 200 are arranged in a one-to-one correspondence.

[0221] The one-to-one arrangement of the diaphragm winding mechanism 700 and the diaphragm separation mechanism 200 means that the number of the two is the same and the positions are corresponding. The corresponding positions mean that the corresponding diaphragm winding mechanism 700 and the diaphragm separation mechanism 200 are close to each other, and the diaphragm picked up by the diaphragm separation mechanism 200 can be directly transported to the corresponding diaphragm winding mechanism 700 without the help of other equipment.

[0222] By adopting the solution provided in this embodiment, the first diaphragm 410 and / or the second diaphragm 430 separated by the diaphragm separation mechanism 200 can be directly wound by the corresponding diaphragm winding mechanism 700, so that the moving distance of the diaphragm separation mechanism 200 is small, thereby making the volume of the diaphragm separation mechanism 200 smaller and the structure of the entire battery recycling device compact.

[0223] In some embodiments, Figure 8 As shown, the diaphragm winding mechanism 700 includes a frame 710, a winding frame 720, a telescopic driving assembly 730 and a rotation driving assembly 740. The winding frame 720 is movably mounted on the frame 710. The telescopic driving assembly 730 is disposed on the frame 710 and is used to drive the winding frame 720 to move relative to the frame 710 along the third direction A to adjust the distance between the winding frame 720 and the diaphragm separation mechanism 200. The rotation driving assembly 740 is disposed on the frame 710 and is used to drive the winding frame 720 to rotate relative to the frame 710 to wind the first diaphragm 410 and / or the second diaphragm 430.

[0224] The frame 710 is a frame body capable of carrying other components in the diaphragm winding mechanism 700, and its structure and shape can be set according to usage requirements.

[0225] The winding frame 720 is a cylindrical structure or a quasi-cylindrical structure capable of carrying the diaphragm. The diaphragm can be wound into a roll by rotating the winding frame 720.

[0226] The telescopic drive assembly 730 may use one telescopic drive member 523 , or multiple telescopic drive members 523 , as long as it can drive the winding rack 720 to move along the third direction A relative to the frame 710 to adjust the distance between the winding rack 720 and the diaphragm separation mechanism 200 .

[0227] The rotation drive assembly 740 may adopt one rotation drive member 523 , or multiple rotation drive members 523 , as long as it can drive the winding frame 720 to rotate relative to the frame 710 to wind the first diaphragm 410 and / or the second diaphragm 430 .

[0228] The diaphragm winding mechanism 700 adopts the structure provided in this embodiment and has a stable structure.

[0229] In some embodiments, the telescopic drive assembly 730 and the winding frame 720 are in detachable contact.

[0230] Separable contact means that the telescopic drive assembly 730 can contact the winding rack 720 when it is necessary to drive the winding rack 720 to move along the third direction A relative to the frame 710, and separate from the winding rack 720 when it is not necessary for the winding rack 720 to move along the third direction A relative to the frame 710.

[0231] By adopting the solution provided in this embodiment, when the winding rack 720 needs to move along the third direction A relative to the frame 710, the telescopic drive assembly 730 is controlled to contact the winding rack 720 to push it to move relative to the frame 710. When the winding rack 720 needs to be rotated, the telescopic drive assembly 730 can be controlled to separate from the winding rack 720, and the winding rack 720 can be controlled to rotate relative to the frame 710 by the rotating drive assembly 740.

[0232] In this way, when the winding frame 720 rotates relative to the frame 710 under the action of the rotating drive assembly 740, it will not be affected by the telescopic drive assembly 730, which facilitates the separate control of translation and rotation, as well as the design of the telescopic drive assembly 730 and the rotating drive assembly 740.

[0233] In some embodiments, the winding frame 720 has a winding surface for winding the first diaphragm 410 or the second diaphragm 430, and has a protrusion 750 extending out of the winding surface. The telescopic driving assembly 730 and the protrusion 750 are in detachable contact.

[0234] The winding surface can be a continuous surface or a discontinuous surface, which can be set according to the use requirements. The protrusion 750 can be a convex block, a rod body or other structures, which can be arranged on the winding surface or outside the winding surface.

[0235] By adopting the solution provided in this embodiment, the contact between the telescopic drive component 730 and the winding frame 720 can be achieved by contacting the protrusion 750, without touching the winding surface and the diaphragm on the winding surface, thereby reducing the adverse effects of the telescopic drive component 730 on the winding of the diaphragm, so that the winding of the diaphragm can proceed normally.

[0236] In some embodiments, Figure 8 As shown, the telescopic driving assembly 730 includes a telescopic power source 731 and a push assembly 732. The telescopic power source 731 has a driving end that can move along a third direction A relative to the frame 710, and the push assembly 732 is disposed at the driving end.

[0237] The push assembly 732 includes a first body 7321 and a second body 7322 spaced apart along the third direction A. A space 7323 is formed between the first body 7321 and the second body 7322 to accommodate the protrusion 750 and allow the protrusion 750 to rotate. The first body 7321 and the second body 7322 drive the protrusion 750 to move along the third direction A by contacting the protrusion 750.

[0238] The telescopic power source 731 can be a device that can provide power for telescopic movement, such as a pneumatic cylinder, a hydraulic cylinder, etc.

[0239] The first body 7321 and the second body 7322 can be rods, blocks or other structures. The structures of the first body 7321 and the second body 7322 can be the same or different, and can be set according to the use requirements.

[0240] For ease of understanding, Figure 8 Taking the figure as an example, the working principle of the telescopic driving assembly 730 provided in this embodiment to push the winding frame 720 is described:

[0241] When it is necessary to push the winding rack 720 outward through the telescopic driving assembly 730, the driving end of the telescopic power source 731 is controlled to move outward. At this time, the first body 7321 contacts the protrusion 750, and the first body 7321 pushes the protrusion 750 and the winding rack 720 as a whole to move outward relative to the frame 710.

[0242] When it is necessary to push the winding frame 720 to retract inward through the telescopic drive assembly 730, the driving end of the telescopic power source 731 is controlled to move inward. At this time, the second body 7322 contacts the protrusion 750, and the protrusion 750 and the winding frame 720 are pushed as a whole along the negative direction of the third direction A through the second body 7322.

[0243] When the winding frame 720 needs to be rotationally driven by the rotation driving assembly 740, the driving end of the telescopic power source 731 is first controlled to move inward or outward so that the first body 7321 and the second body 7322 are not in contact with the protrusion 750, and then the winding frame 720 is driven to rotate by the rotation driving assembly 740.

[0244] By adopting the solution provided in this embodiment, when it is necessary to translate the winding frame 720 through the telescopic driving assembly 730, the driving end can be driven to move in the corresponding direction through the telescopic power source 731, so that the first body 7321 or the second body 7322 abuts against the convex portion 750, and drives it and the winding frame 720 to move in the corresponding direction. When it is necessary to rotationally drive the winding frame 720 through the rotation driving assembly 740, the driving end can be driven to move in the opposite direction through the telescopic power source 731, so that the first body 7321 or the second body 7322 is separated from the convex portion 750. In this way, when the rotation driving assembly 740 drives the winding frame 720 to rotate, the convex portion 750 will not rub against the first body 7321 or the second body 7322, so that the winding frame 720 can rotate smoothly.

[0245] In some embodiments, Figure 8 As shown, the frame 710 is provided with a rod 760 extending along the third direction A. The rod 760 can rotate around its own axis relative to the frame 710. The winding frame 720 is sleeved on the rod 760, and the rotation drive assembly 740 can drive the winding frame 720 to rotate by driving the rod 760 to rotate.

[0246] The rod body 760 in this embodiment can be rotatably disposed on the frame 710 or on the rotation drive assembly 740 , and can be specifically set according to the use requirements. The winding frame 720 is sleeved on the rod body 760 and can slide along the extension direction of the rod body 760 .

[0247] The structure provided in this embodiment makes the diaphragm winding mechanism 700 simple in structure and easy to operate.

[0248] In some embodiments, Fig. 9 As shown, the battery recycling device further includes a flattening member 910. Along the conveying direction Y of the conveying mechanism 100, the flattening member 910 is located in front of the diaphragm separation mechanism 200. A channel is formed between the flattening member 910 and the conveying surface for the electrode assembly 400 to pass through in a flat manner.

[0249] The flattening member 910 can be a single member or a combination of multiple members. When a single member is used, the flattening member 910 can be a plate, a rod, etc., which can be selected according to the use requirements.

[0250] The flattening member 910 can be fixed above the annular structure formed by the conveying surface by hanging, supporting by a bracket, etc.

[0251] Along the conveying direction Y of the conveying mechanism 100 , the flattening member 910 is located in front of the diaphragm separation mechanism 200 , which means that when the electrode assembly is conveyed forward by the conveying mechanism, the electrode assembly first passes through the station where the flattening member 910 is located, and then passes through the station where the diaphragm separation mechanism 200 is located.

[0252] The arrangement of the flattening member 910 can reduce the risk of the components of the electrode assembly 400 being lifted up when the electrode assembly 400 is conveyed by the conveying mechanism 100 to a certain extent, so that the electrode assembly 400 can be better fitted with the conveying mechanism 100, so that the subsequent diaphragm separation mechanism and the electrode sheet separation mechanism can pick up the corresponding components at the preset position. The preset position refers to the position of the above-mentioned adsorption position and the guide surface.

[0253] According to some embodiments of the present application, Figures 1 to 9 As shown, a battery recycling device is provided, which includes a conveying mechanism 100 , a feeding mechanism 500 , a stripping mechanism 600 , two electrode sheet separation mechanisms 300 , two diaphragm separation mechanisms 200 , two diaphragm winding mechanisms 700 and two recycling boxes 800 .

[0254] The conveying mechanism 100 is a vacuum conveying mechanism, which has a conveying surface and a limiting component. The vacuuming component in the vacuum conveying mechanism is a limiting component.

[0255] The electrode piece separation mechanism 300 includes a block 320, and the block 320 has an inclined surface that is inclined relative to the conveying surface of the conveying mechanism 100, and the inclined surface is a guide surface 310. The two guide surfaces 310 are respectively arranged on both sides of the conveying surface and are located at both ends of the conveying mechanism 100. The guiding directions of the two guide surfaces 310 are opposite. The guide surface 310 located above the conveying surface is used to guide the first electrode piece to detach from the conveying surface and fall across the corresponding end surface of the conveying mechanism; the guide surface 310 located below the conveying surface is used to guide the second electrode piece to detach from the conveying surface and fall across the corresponding end surface of the conveying mechanism.

[0256] The recovery boxes 800 are arranged corresponding to the guide surface 310 , wherein one recovery box 800 is used to receive the first pole piece 420 that falls after being guided by the guide surface 310 , and the other recovery box 800 is used to receive the second pole piece 440 that falls after being guided by the guide surface 310 .

[0257] The membrane separation mechanism 200 includes an adsorption assembly 210 and a first driving assembly 220. The first driving assembly 220 is drivingly connected to the adsorption assembly 210 to drive the adsorption assembly 210 to reciprocate between the adsorption position and the release position. The adsorption assembly 210 of one membrane separation mechanism 200 is used to adsorb the first membrane 410 at the adsorption position, and to release the adsorbed first membrane 410 at the release position. The adsorption assembly 210 of another membrane separation mechanism 200 is used to adsorb the second membrane 430 at the adsorption position, and to release the adsorbed second membrane 430 at the release position.

[0258] The first driving assembly 220 includes a lifting assembly 221 and a translation assembly 222. The adsorption assembly 210 is connected to the lifting assembly 221, and the lifting assembly 221 is connected to the translation assembly 222. The lifting assembly 221 is used to drive the adsorption assembly 210 to rise or fall relative to the conveying surface, and the translation assembly 222 is used to drive the lifting assembly 221 to translate in a direction parallel to the conveying surface.

[0259] The adsorption assembly 210 may be a vacuum adsorption mechanism, which can adsorb a single membrane in the electrode assembly to separate the corresponding membrane. In an optional embodiment, the first driving assembly 220 includes a cam guide rod mechanism and a power source (not limited to a cylinder or a servo motor) connected to the cam guide rod mechanism, and the cam guide rod mechanism is any mechanism available on the market that can drive the adsorption assembly 210 to rise and fall and translate in a direction parallel to the conveying surface.

[0260] In an optional embodiment, the cam guide rod mechanism includes a frame, a slider slidably arranged on the frame in a direction parallel to the conveying surface, and a lifting mechanism movably arranged on the slider in a vertical direction. The adsorption component is installed at the driving end of the lifting mechanism, and the power source is connected to the sliding drive to drive it to move relative to the frame in a horizontal direction. The lifting mechanism includes a rod body and a lifting power source that drives the rod body to rise and fall in a vertical direction, and the adsorption component is installed at one end of the rod body that is the lifting power source. In an optional embodiment, the lifting mechanism can be a screw lifting mechanism.

[0261] The loading mechanism 500 is used to place the electrode assembly 400 on the conveying mechanism 100. The loading mechanism 500 includes a clamping assembly 510 and a second driving assembly 520. The clamping assembly 510 is used to clamp and release the electrode assembly 400, and the clamping assembly 510 is connected to the second driving assembly 520, and the second driving assembly 520 is used to drive the clamping assembly 510 to move between a material taking position away from the conveying surface and a material discharge position close to the conveying surface.

[0262] The second driving assembly 520 includes a connecting member 521, a first guide portion 524 and a driving member 523. The clamping assembly 510 is connected to the connecting member 521. The first guide portion 524 includes a guide groove, and the connecting member 521 is slidably installed in the guide groove. The driving member 523 is used to drive the connecting member 521 to move along the extension direction of the guide groove.

[0263] In an optional embodiment, the clamping assembly 510 includes a first clamping jaw fixedly connected to the connecting member 521, a second clamping jaw movably connected to the connecting member 521, and a power source drivingly connected to the second clamping jaw, wherein the power source can control the second clamping jaw to move horizontally relative to the first clamping jaw to adjust the distance between the two, thereby achieving clamping or release of the corresponding part of the electrode assembly.

[0264] The feeding mechanism 500 further includes a guide assembly 530, which is used to cooperate with the first guide portion 524 to guide the connecting member 521 to move along a preset path. The guide assembly 530 includes a second guide portion 531 and a sliding member 532 slidably disposed on the second guide portion 531, and a third guide portion 533 is disposed on the sliding member 532. The connecting member 521 is slidably disposed on the third guide portion 533 along the first direction B, and the sliding member 532 is slidably disposed on the second guide portion 531 along the second direction C. The second direction C is perpendicular to the first direction B.

[0265] The stripping mechanism 600 is mainly used to strip the protective film, finishing tape and diaphragm on the surface of the battery by certain physical and mechanical means (such as puncturing, cutting, etc.). The stripping mechanism 600 includes a tip 610 and a third driving component 620. The third driving component 620 is used to drive the tip 610 to move back and forth between the stripping position and the avoidance position. The tip 610 is used to puncture the battery cell 900 at the stripping position to remove the protective film and expose the end of the electrode assembly 400, and is used to be located outside the moving path of the electrode assembly at the avoidance position. In an optional embodiment, the tip 610 is a hot cutter.

[0266] The diaphragm winding mechanism 700 is arranged in a one-to-one correspondence with the diaphragm separation mechanism 200. The diaphragm winding mechanism 700 includes a frame 710, a winding frame 720, a telescopic driving assembly 730 and a rotating driving assembly 740. The winding frame 720 is movably mounted on the frame 710. The telescopic driving assembly 730 is arranged on the frame 710 and is used to drive the winding frame 720 to move relative to the frame 710 along the third direction A to adjust the distance between the winding frame 720 and the diaphragm separation mechanism 200. The rotating driving assembly 740 is arranged on the frame 710 and is used to drive the winding frame to rotate relative to the frame 710 to wind the first diaphragm 410 and / or the second diaphragm 430.

[0267] The winding frame 720 has a winding surface for winding the first diaphragm 410 or the second diaphragm 430, and has a convex portion 750 extending outside the winding surface, and the telescopic driving assembly 730 is in detachable contact with the convex portion 750. The telescopic driving assembly 730 includes a telescopic power source 731 and a push assembly 732, the telescopic power source 731 has a driving end that can move relative to the frame 710 along the third direction A, and the push assembly 732 is arranged at the driving end.

[0268] The push assembly 732 includes a first body 7321 and a second body 7322 spaced apart along a third direction A. A space 7323 is formed between the first body 7321 and the second body 7322 to accommodate the protrusion 750 and allow the protrusion 750 to rotate. The first body 7321 and the second body 7322 drive the protrusion 750 to move along the third direction A by contacting the protrusion 750.

[0269] The frame 710 is provided with a rod body 760 extending along the third direction A. The rod body 760 can rotate around its own axis relative to the frame 710. The winding frame 720 is sleeved on the rod body 760. The rotation drive assembly 740 drives the rod body 760 to rotate, thereby driving the winding frame 720 to rotate.

[0270] In some embodiments, the battery recycling device further includes a flattening member 910 located above the conveying surface. Along the conveying direction of the conveying mechanism 100, the flattening member 910 is located in front of the diaphragm separation mechanism 200. A channel is formed between the flattening member 910 and the conveying surface for the electrode assembly 400 to pass through in a flat manner. The flattening member 910 is a plate parallel to the conveying surface.

[0271] The process of disassembling a battery using the battery recycling device provided in this embodiment is as follows:

[0272] The stripping mechanism 600 is located in front of or below the loading mechanism 500. Before disassembling the battery, the protective film on the surface of the battery is first stripped off by the stripping mechanism 600, and the corresponding diaphragm is cut off to expose the end of the four-layer structure of diaphragm, electrode piece, diaphragm, and electrode piece (i.e., the electrode assembly 400). Then, the end of the electrode assembly 400 is grasped by the loading mechanism 500 and placed on the conveying surface of the vacuum conveying mechanism.

[0273] The vacuum conveying mechanism is running, and the conveying surface is in a circular motion. The diaphragm separation mechanism 200 moves downward at a specified position, and the end of the first diaphragm 410 is adsorbed by the adsorption component 210, and driven to move to the corresponding diaphragm winding mechanism and wound into a roll by the diaphragm winding mechanism. At the same time, the remaining part of the electrode assembly 400 continues to move forward under the conveyance of the vacuum conveying mechanism. Before moving to the corner, the first electrode 420 is separated under the action of the guide surface 310 of the electrode separation mechanism 300, and the second electrode 420 is moved to the second electrode 420. The diaphragm 430 and the second electrode piece 440 continue to move forward under the action of the vacuum conveying mechanism. When they move to the specified position, another diaphragm separation mechanism 200 adsorbs the second diaphragm 430 and moves it to the corresponding diaphragm winding mechanism and is wound into a roll by the diaphragm winding mechanism. The second electrode piece 440 continues to move forward under the conveyance of the vacuum conveying mechanism. When it reaches another electrode piece separation mechanism 300, it detaches from the conveying surface under the guidance of the guide surface 310 of the electrode piece separation mechanism 300 and falls into the corresponding recycling box 800.

[0274] Then, the four-layer structure is gradually unfolded from the battery cell 900 through the rotation of the vacuum conveying mechanism, and then the first diaphragm 410, the first pole piece 420, the second diaphragm 430, and the second pole piece 440 are peeled off layer by layer through the diaphragm separation mechanism 200, the pole piece separation mechanism 300, the diaphragm separation mechanism 200, and the pole piece separation mechanism 300.

[0275] Among them, the electrode separation mechanism 300 located above the conveying surface is located at the corner of the conveying surface, so that the first electrode 420 can fall directly into the corresponding recycling box 800 after being separated by the guide surface 310, and no other recycling equipment is required to collect and transport the first electrode 420 again.

[0276] The two guide surfaces 310 are disposed at both ends of the conveying mechanism 100 so that different pole pieces can fall into different recycling boxes 800 without being mixed, which is convenient for subsequent separate processing.

[0277] In the above operation, since the size of the diaphragm is larger than that of the electrode piece, the loading mechanism 500 can grasp and move the end of the electrode assembly 400 by grasping the first diaphragm 410 and the second diaphragm 430 .

[0278] In summary, the battery recycling device provided in this embodiment can use a fully physical method to achieve layer-by-layer separation of cathode sheets, anode sheets, and various diaphragms in waste power batteries, and the separation process can achieve separate collection of pure cathode sheets and separate collection of pure anode sheets.

[0279] By using the battery recycling device provided in this embodiment, the components in the electrode assembly 400 can be separated without stopping during the circular rotation of the conveyor belt in the vacuum conveying mechanism, thereby improving the separation efficiency of a single device.

[0280] According to some embodiments of the present application, Fig.10 As shown, the present application also provides a battery recycling method, which uses the battery recycling devices provided in the above embodiments. The battery recycling method includes:

[0281] S1. placing the electrode assembly on the conveying surface of the conveying mechanism;

[0282] S2. The diaphragm and the electrode sheet in the electrode assembly are removed from the conveying mechanism in sequence through the diaphragm separation mechanism and the electrode sheet separation mechanism.

[0283] The above step S1 can be to directly place the entire electrode assembly in a flat manner on the conveying surface of the conveying mechanism, or to first place the end of the electrode assembly in a flat manner on the conveying surface of the conveying mechanism, and then place the other parts of the electrode assembly in a flat manner on the conveying surface of the conveying mechanism as the conveying mechanism operates.

[0284] In the above step S2, when the diaphragm and the electrode plate in the electrode assembly are removed from the conveying mechanism in sequence by the diaphragm separation mechanism and the electrode plate separation mechanism, the unseparated parts of the electrode assembly can be fixed by the limiting assembly in the conveying mechanism to reduce the risk of causing a significant adverse effect on the flatness of other unseparated parts during the separation process of each component, so that the diaphragm and the electrode plate can be separated layer by layer.

[0285] In the process of sequentially removing the diaphragm and the electrode sheet of the electrode assembly from the conveying mechanism by the diaphragm separation mechanism and the electrode sheet separation mechanism in the above step S2, the battery recycling method further comprises:

[0286] S3. The unseparated part of the electrode assembly is kept in the original conveying state through the limiting assembly.

[0287] The position limiting assembly in this embodiment can adopt the position limiting assembly provided in any of the above embodiments. The position limiting assembly can work in other steps except when only the last pole piece is left on the conveying surface in step S2.

[0288] The battery recycling method provided in the embodiment of the present application, using the battery recycling devices provided in the above embodiments, can reduce to a certain extent the risk that the remaining part of the electrode assembly 400 is taken away from the conveying mechanism 100 under the action of tension when the diaphragm separation mechanism 200 separates the diaphragm, or when the pole piece separation mechanism 300 separates the pole piece, so that the diaphragm and pole piece in the electrode assembly 400 can be separated in sequence. In this way, the battery recycling method provided in the embodiment of the present application is not only applicable to the disassembly of dry electrode assemblies, but also to the disassembly of wet electrode assemblies, and can realize the separate separation of the various components in the electrode assembly to facilitate the subsequent separate processing of these parts, which can reduce the risk of environmental pollution to a certain extent. In some embodiments, such as Figure 1 and Figure 2 As shown, the diaphragm includes a first diaphragm 410 and a second diaphragm 430. The pole piece includes a first pole piece 420 and a second pole piece 440. The first diaphragm 410, the first pole piece 420, the second diaphragm 430 and the second pole piece 440 are stacked in sequence, and the second pole piece 440 is in contact with the conveying surface.

[0289] There are two diaphragm separation mechanisms 200 and two pole piece separation mechanisms 300 .

[0290] like Fig.11 As shown, the above step S2 sequentially removes the diaphragm and the electrode sheet of the electrode assembly from the conveying mechanism through the diaphragm separation mechanism and the electrode sheet separation mechanism, including:

[0291] S21. Separate the first diaphragm from the first pole piece through one of the diaphragm separation mechanisms, and recover the first diaphragm.

[0292] It can be understood that one of the diaphragm separation mechanisms mentioned here refers to the diaphragm separation mechanism that the electrode assembly passes through first along the conveying sequence.

[0293] S22. Separate the first pole piece from the second diaphragm through one of the pole piece separation mechanisms, and recover the first pole piece.

[0294] It can be understood that one of the electrode separation mechanisms mentioned here refers to the electrode separation mechanism that the electrode assembly passes through first along the conveying sequence.

[0295] S23, separating the second diaphragm from the second pole piece through another diaphragm separation mechanism, and recovering the second diaphragm.

[0296] It can be understood that the other diaphragm separation mechanism mentioned here refers to the diaphragm separation mechanism that passes after the electrode assembly along the conveying sequence.

[0297] S24, separating the second pole piece from the conveying surface through another pole piece separation mechanism, and recovering the second pole piece.

[0298] It can be understood that the other electrode separation mechanism mentioned here refers to the electrode separation mechanism that passes after the electrode assembly along the conveying sequence.

[0299] The diaphragm separation mechanism and the pole piece separation mechanism in this embodiment may adopt the diaphragm separation mechanism and the pole piece separation mechanism provided by any of the above embodiments.

[0300] In this embodiment, the above step S3 works in step S21, step S22 and step S23 except step S24. For example, during step S21, the limiting assembly can keep the first pole piece, the second diaphragm and the second pole piece in a stacked arrangement, and the three are fixed to the conveying surface as a whole; during step S22, the limiting assembly can keep the second diaphragm and the second pole piece in a stacked arrangement, and the two are fixed to the conveying surface as a whole; during step S23, the limiting assembly can fix the second pole piece to the conveying surface.

[0301] By adopting the solution provided in this embodiment, the first diaphragm, the first pole piece, the second diaphragm and the second pole piece can be separated and recycled layer by layer, which can reduce the risk of mixing of different materials to a certain extent and facilitate subsequent processing.

[0302] In some embodiments, the battery recycling device further includes a loading mechanism 500. The loading mechanism 500 in this embodiment can be the loading mechanism 500 provided in any of the above embodiments.

[0303] like Fig.12 As shown, the above step S1 of placing the electrode assembly on the conveying surface of the conveying mechanism includes:

[0304] S11. Place the electrode assembly on the conveying surface through the loading mechanism.

[0305] Placing the electrode assembly on the conveying surface by means of the loading mechanism means picking up the electrode assembly 400 by the loading mechanism 500 and placing the electrode assembly 400 on the conveying surface of the conveying mechanism 100 in a flat manner.

[0306] By adopting the solution provided in this embodiment, the automation level of the battery recycling device can be further improved, and the disassembly efficiency and recycling efficiency of the electrode assembly 400 can be improved.

[0307] In some embodiments, the battery recycling device further includes a peeling mechanism 600. The peeling mechanism 600 in this embodiment can be the peeling mechanism 600 provided in any of the above embodiments.

[0308] like Fig.13 As shown, before placing the electrode assembly on the conveying surface of the conveying mechanism in the above step S1, the battery recycling method further includes:

[0309] S0. Remove the protective film of the battery cell by a peeling mechanism to expose the end of the electrode assembly.

[0310] Specifically, during the operation of step S0, the protective film on the outside of the waste battery can be punctured by the stripping mechanism 600 first, and then the protective film can be removed manually, by the stripping mechanism 600 or by other equipment, and the end of the electrode assembly 400 is exposed.

[0311] It is understandable that when one end of the electrode assembly 400 is not exposed after the protective film is removed, the corresponding diaphragm can also be punctured or cut by the peeling mechanism 600 .

[0312] By adopting the solution provided in this embodiment, the automation level of the battery recycling device can be further improved, thereby improving the disassembly efficiency and recycling efficiency of the electrode assembly 400.

[0313] In some embodiments, Fig. 9 As shown, the battery recycling device further includes a flattening member 910. Along the conveying direction Y of the conveying mechanism 100, the flattening member 910 is located in front of the diaphragm separation mechanism 200, and a channel is formed between the flattening member 910 and the conveying surface for the electrode assembly 400 to pass through in a flat manner. The flattening member 910 in this embodiment can be the flattening member 910 provided in any of the above embodiments.

[0314] like Fig.14 As shown, between the above step S1 of placing the electrode assembly on the conveying surface of the conveying mechanism, and the above step S2 of sequentially removing the diaphragm and the electrode sheet of the electrode assembly from the conveying mechanism by the diaphragm separation mechanism and the electrode sheet separation mechanism, the following steps are also included:

[0315] S4. Flatten the electrode assembly using a flattening piece.

[0316] Specifically, when the battery recycling method provided in this embodiment is used, the end of the electrode assembly can be placed flat on the conveying surface first, and then the electrode assembly will pass through the channel between the flattening member 910 and the conveying surface to form a channel for the electrode assembly 400 to pass through in a flat manner, and then reach the diaphragm separation mechanism. When the electrode assembly passes through the channel between the flattening member 910 and the conveying surface, if there is a part of the electrode assembly that is tilted upward, it will be flattened by the flattening member, thereby achieving the flattening of the electrode assembly.

[0317] By adopting the solution provided in this embodiment, the risk of the components in the electrode assembly 400 being lifted up when the electrode assembly 400 is transported by the transport mechanism 100 can be reduced to a certain extent, so that the electrode assembly 400 can be better fitted with the transport mechanism 100, so that the subsequent diaphragm separation mechanism and the electrode sheet separation mechanism can pick up the corresponding components at the preset position. The preset position refers to the position where the above-mentioned adsorption position and the guide surface are located.

[0318] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present application, rather than to limit them; although the present application has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or replace some or all of the technical features therein by equivalents; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the scope of the technical solutions of the embodiments of the present application, and they should all be included in the scope of the claims and specification of the present application. In particular, as long as there is no structural conflict, the various technical features mentioned in the various embodiments can be combined in any way. The present application is not limited to the specific embodiments disclosed herein, but includes all technical solutions that fall within the scope of the claims.

Claims

1. A battery recycling device, characterized in that: It comprises a conveying mechanism (100), at least one diaphragm separation mechanism (200) and at least one pole piece separation mechanism (300); The conveying mechanism (100) comprises a conveying surface and a limiting component, the conveying mechanism (100) is used to convey the electrode assembly (400), and can keep the unseparated part of the electrode assembly (400) in the original conveying state through the limiting component; the electrode assembly (400) comprises a diaphragm and an electrode sheet; The diaphragm separation mechanism (200) is used to separate the diaphragm from the adjacent pole piece; The pole piece separation mechanism (300) is used to separate the pole piece from the adjacent diaphragm and / or to separate the pole piece from the conveying surface.

2. The battery recycling device according to claim 1, characterized in that: The diaphragm comprises a first diaphragm (410) and a second diaphragm (430), and the pole piece comprises a first pole piece (420) and a second pole piece (440); the first diaphragm (410), the first pole piece (420), the second diaphragm (430) and the second pole piece (440) are stacked in sequence, and the second pole piece (440) is in contact with the conveying surface; Two of the pole piece separation mechanisms (300) are provided, and the two pole piece separation mechanisms (300) are used to respectively guide the first pole piece (420) and the second pole piece (440) to the outside of the conveying mechanism (100).

3. The battery recycling device according to claim 2, characterized in that: The limiting component is a vacuum component, which is located below the conveying surface or in the space (7323) enclosed by the conveying surface. The vacuum component is used to make the air pressure below the conveying surface lower than the air pressure above the conveying surface, or to make the air pressure inside the space (7323) enclosed by the conveying surface lower than the air pressure outside the space (7323) enclosed by the conveying surface.

4. The battery recycling device according to claim 3, characterized in that: The pole piece separation mechanism (300) has a guide surface (310) arranged obliquely relative to a conveying surface of the conveying mechanism (100), and the guide surface (310) is used to guide the first pole piece (420) and / or the second pole piece (440) to the outside of the conveying mechanism (100).

5. The battery recycling device according to claim 4, characterized in that: The conveying surface is an annular structure, and the two guide surfaces (310) are arranged on two opposite sides of the conveying surface.

6. The battery recycling device according to claim 5, characterized in that: The conveying surface has a first end (110) and a second end (120) which are arranged opposite to each other along the conveying direction (Y), and the first end (110) is the starting end of the conveying surface; Along the conveying sequence, the guide surface (310) located in the front corresponds to the position of the second end (120), and a gap is formed between the guide surface (310) and the conveying surface for the second diaphragm (430) and the second pole piece (440) to pass through.

7. The battery recycling device according to claim 6, characterized in that: The direction perpendicular to the conveying direction (Y) is taken as the projection direction (X), and the orthographic projections of the two guide surfaces (310) along the projection direction (X) do not overlap.

8. The battery recycling device according to claim 6 or 7, characterized in that: Along the conveying sequence, the guide surface (310) located at the rear corresponds to the position of the first end (110).

9. The battery recycling device according to any one of claims 4 to 8, characterized in that: The pole piece separation mechanism (300) comprises a block (320), wherein the block (320) has an inclined surface for contacting the first pole piece (420) and / or the second pole piece (440), and the inclined surface is the guide surface (310).

10. The battery recycling device according to any one of claims 4 to 9, characterized in that: The battery recycling device further comprises a recycling box (800), wherein the recycling box (800) is arranged corresponding to the guide surface (310) and is used to receive the first pole piece (420) and / or the second pole piece (440) that falls after being guided by the guide surface (310).

11. The battery recycling device according to any one of claims 2 to 10, characterized in that: The diaphragm separation mechanisms (200) are provided with two, and the two diaphragm separation mechanisms (200) are respectively used to separate the first diaphragm (410) and the second diaphragm (430), so that the first diaphragm (410) and the second diaphragm (430) are respectively separated from other components of the electrode assembly (400).

12. The battery recycling device according to any one of claims 2 to 11, characterized in that: The diaphragm separation mechanism (200) comprises an adsorption component (210) and a first driving component (220), wherein the first driving component (220) is drivingly connected to the adsorption component (210) to drive the adsorption component (210) to reciprocate between an adsorption position and a release position, and the adsorption component (210) is used to adsorb the first diaphragm (410) and / or the second diaphragm (430) at the adsorption position, and to release the adsorbed first diaphragm (410) and / or the second diaphragm (430) at the release position.

13. The battery recycling device according to claim 12, characterized in that: The first driving component (220) comprises a lifting component (221) and a translation component (222); the adsorption component (210) is connected to the lifting component (221); the lifting component (221) is connected to the translation component (222); the lifting component (221) is used to drive the adsorption component (210) to rise or fall relative to the conveying surface; the translation component (222) is used to drive the lifting component (221) to translate in a direction parallel to the conveying surface.

14. The battery recycling device according to any one of claims 1 to 13, characterized in that: The battery recycling device further comprises a loading mechanism (500), wherein the loading mechanism (500) is used to place the electrode assembly (400) on the conveying surface.

15. The battery recycling device according to claim 14, characterized in that: The loading mechanism (500) comprises a clamping assembly (510) and a second driving assembly (520), wherein the clamping assembly (510) is used to clamp and release the electrode assembly (400), and the clamping assembly (510) is connected to the second driving assembly (520), and the second driving assembly (520) is used to drive the clamping assembly (510) to move between a material taking position away from the conveying surface and a material discharge position close to the conveying surface.

16. The battery recycling device according to claim 15, characterized in that: The second driving component (520) includes a connecting member (521), a first guide portion (524) and a driving member (523); the clamping component (510) is connected to the connecting member (521); the connecting member (521) is slidably disposed on the first guide portion (524); and the driving member (523) is used to drive the connecting member (521) to move along the first guide portion (524).

17. The battery recycling device according to claim 16, characterized in that: The first guide portion (524) comprises a guide groove, and the connecting member (521) is slidably mounted in the guide groove.

18. The battery recycling device according to claim 16 or 17, characterized in that: The feeding mechanism (500) further comprises a guide assembly (530), wherein the guide assembly (530) is used to cooperate with the first guide portion (524) to guide the connecting member (521) to move along a preset path.

19. The battery recycling device according to claim 18, characterized in that: The guide assembly (530) comprises a second guide portion (531) and a sliding member (532) slidably arranged on the second guide portion (531); a third guide portion (533) is provided on the sliding member (532); the connecting member (521) is slidably arranged on the third guide portion (533) along a first direction (B); the sliding member (532) is slidably arranged on the second guide portion (531) along a second direction (C); and the second direction (C) and the first direction (B) are arranged at an angle.

20. The battery recycling device according to any one of claims 1 to 19, characterized in that: The battery recycling device further comprises a stripping mechanism (600) for removing a protective film of a battery cell (900) to expose an end of the electrode assembly (400).

21. The battery recycling device according to claim 20, characterized in that: The stripping mechanism (600) comprises a tip (610) and a third driving component (620), wherein the third driving component (620) is used to drive the tip (610) to reciprocate between a stripping position and an avoidance position, wherein the tip (610) is used to pierce the battery cell (900) at the stripping position to remove the protective film, and is used to be located outside the moving path of the electrode assembly (400) at the avoidance position.

22. The battery recycling device according to any one of claims 2 to 13, characterized in that: The battery recycling device further comprises at least one diaphragm winding mechanism (700), wherein the diaphragm winding mechanism (700) is used to wind the first diaphragm (410) and / or the second diaphragm (430) separated by the diaphragm separation mechanism (200) into a roll.

23. The battery recycling device according to claim 22, characterized in that: The diaphragm winding mechanism (700) and the diaphragm separation mechanism (200) are arranged in a one-to-one correspondence.

24. The battery recycling device according to claim 22 or 23, characterized in that: The diaphragm winding mechanism (700) comprises a frame (710), a winding frame (720), a telescopic driving assembly (730) and a rotating driving assembly (740); the winding frame (720) is movably mounted on the frame (710); the telescopic driving assembly (730) is disposed on the frame (710) and is used to drive the winding frame (720) to move along a third direction relative to the frame (710) so as to adjust the distance between the winding frame (720) and the diaphragm separation mechanism (200); the rotating driving assembly (740) is disposed on the frame (710) and is used to drive the winding frame (720) to rotate relative to the frame (710) so as to wind the first diaphragm (410) and / or the second diaphragm (430).

25. The battery recycling device according to claim 24, characterized in that: The telescopic driving assembly (730) is in detachable contact with the winding frame (720).

26. The battery recycling device according to claim 25, characterized in that: The winding frame (720) has a winding surface for winding the first diaphragm (410) or the second diaphragm (430), and has a convex portion (750) extending outside the winding surface, and the telescopic drive component (730) is in detachable contact with the convex portion (750).

27. The battery recycling device according to claim 26, characterized in that: The telescopic driving assembly (730) comprises a telescopic power source (731) and a pushing assembly (732), wherein the telescopic power source (731) has a driving end capable of moving along the third direction relative to the frame (710), and the pushing assembly (732) is arranged at the driving end; The pushing assembly (732) includes a first body (7321) and a second body (7322) arranged at intervals along the third direction, and a space (7323) is formed between the first body (7321) and the second body (7322) to accommodate the protrusion (750) and allow the protrusion (750) to rotate. The first body (7321) and the second body (7322) drive the protrusion (750) to move along the third direction by contacting the protrusion (750).

28. The battery recycling device according to any one of claims 24 to 27, characterized in that: The frame (710) is provided with a rod body (760) extending along the third direction. The rod body (760) can rotate around its own axis relative to the frame (710). The winding frame (720) is sleeved on the rod body (760). The rotation drive assembly (740) drives the rod body (760) to rotate, thereby driving the winding frame (720) to rotate.

29. The battery recycling device according to any one of claims 1 to 28, characterized in that: The battery recycling device also includes a flattening member (910), which is located in front of the diaphragm separation mechanism (200) along the conveying direction (Y) of the conveying mechanism (100), and a channel is formed between the flattening member (910) and the conveying surface for the electrode assembly (400) to pass through in a flat manner.

30. A battery recycling method, characterized in that: Using the battery recycling device according to any one of claims 1 to 29, the battery recycling method comprises: Placing the electrode assembly (400) on the conveying surface of the conveying mechanism (100); The diaphragm and the electrode sheet of the electrode assembly (400) are sequentially removed from the conveying mechanism (100) by means of the diaphragm separation mechanism (200) and the electrode sheet separation mechanism (300); In the process of sequentially removing the diaphragm and the pole piece of the electrode assembly (400) from the conveying mechanism (100) by the diaphragm separation mechanism (200) and the pole piece separation mechanism (300), the battery recycling method further comprises: The limiting assembly enables the unseparated portion of the electrode assembly (400) to maintain the original conveying state.

31. The battery recycling method according to claim 30, characterized in that: The diaphragm comprises a first diaphragm (410) and a second diaphragm (430), and the pole piece comprises a first pole piece (420) and a second pole piece (440); the first diaphragm (410), the first pole piece (420), the second diaphragm (430) and the second pole piece (440) are stacked in sequence, and the second pole piece (440) is in contact with the conveying surface; The diaphragm separation mechanism (200) and the pole piece separation mechanism (300) are each provided with two, The method of sequentially removing the diaphragm and the electrode sheet of the electrode assembly (400) from the conveying mechanism (100) by means of the diaphragm separation mechanism (200) and the electrode sheet separation mechanism (300) comprises: Separating the first diaphragm (410) from the first pole piece (420) by using one of the diaphragm separation mechanisms (200), and recovering the first diaphragm (410); Separating the first pole piece (420) from the second diaphragm (430) by using one of the pole piece separation mechanisms (300), and recovering the first pole piece (420); Separating the second diaphragm (430) from the second pole piece (440) by another diaphragm separation mechanism (200), and recovering the second diaphragm (430); The second pole piece (440) is separated from the conveying surface by another pole piece separation mechanism (300), and the second pole piece (440) is recovered.

32. The battery recycling method according to claim 30 or 31, characterized in that: The battery recycling device also includes a loading mechanism (500); Placing the electrode assembly (400) on the conveying surface of the conveying mechanism (100) comprises: The electrode assembly (400) is placed on the conveying surface by the loading mechanism (500).

33. The battery recycling method according to any one of claims 30 to 32, characterized in that: The battery recycling device also includes a stripping mechanism (600); Before placing the electrode assembly (400) on the conveying surface of the conveying mechanism (100), the battery recycling method further comprises: The protective film of the battery cell (900) is removed by the peeling mechanism (600) to expose the end of the electrode assembly (400).

34. The battery recycling method according to any one of claims 30 to 33, characterized in that: The battery recycling device further comprises a flattening member (910), which is located in front of the diaphragm separation mechanism (200) along the conveying direction (Y) of the conveying mechanism (100), and a channel is formed between the flattening member (910) and the conveying surface for the electrode assembly (400) to pass through in a flat manner; Between placing the electrode assembly (400) on the conveying surface of the conveying mechanism (100), and sequentially removing the diaphragm and the electrode sheet of the electrode assembly (400) from the conveying mechanism (100) by the diaphragm separation mechanism (200) and the electrode sheet separation mechanism (300), the method further comprises: The electrode assembly (400) is flattened by the flattening member (910).

Images