Device and system for rubbing and separating pole piece and diaphragm

Abstract

The utility model provides a rubbing and separating device and system for a pole piece and a diaphragm, and belongs to the field of lithium battery recycling. The rubbing and separating device comprises a device body, a first rubbing and separating mechanism, a second rubbing and separating mechanism and a conveying belt are arranged in the device body, the first rubbing and separating mechanism and the second rubbing and separating mechanism extend in the first direction, are arranged in a spaced and staggered mode in the second direction, and are connected with the conveying belt. The conveying belt is located between the first rubbing and separating mechanism and the second rubbing and separating mechanism, and the first rubbing and separating mechanism reciprocates in the second direction relative to the device body so as to be tightly attached to or away from the second rubbing and separating mechanism to extrude or release materials; and the conveyor belt is driven to move through rotation at different rotating speeds, so that the materials are rubbed and separated, the magnetic separation of the thin film and the pole piece is more accurate, the thin film can be accurately collected, and the problem of pollution caused by thin film melting is avoided.

Description

Technical Field

[0001] The present disclosure relates to the technical field of battery recycling, and in particular to a device and system for rubbing and separating pole pieces and diaphragms. Background Art

[0002] With the continuous promotion of new energy vehicles, lithium battery technology has developed rapidly, and the production of lithium batteries has also increased dramatically. However, the service life of lithium batteries is limited, so the number of retired lithium batteries has also increased. How to deal with retired lithium batteries has become a new hot topic.

[0003] Lithium batteries contain a large amount of metal components, which can be recycled. At present, the recycling of lithium batteries usually starts with breaking the outer shell to get the internal battery core, which is composed of multiple layers of positive electrode sheets, negative electrode sheets and thin films. The positive electrode sheets, negative electrode sheets and diaphragm sheets are separated by magnetic separation or manual separation, or by melting the thin films in the positive and negative electrode sheets due to their different melting points, and then magnetic separation is performed to distinguish the positive and negative electrode sheets.

[0004] However, in actual use, the diaphragm and the positive and negative electrodes are all micro-sheets with a thickness of only about one-tenth of a millimeter, and the flow rate per minute is as high as 100,000 sheets. When magnetic separation is carried out through the magnetic roller, a large number of positive electrode sheets, negative electrode sheets and diaphragms will show serious stacking phenomenon, while the positive electrode sheets stacked with the diaphragm will not be affected by the magnetic field of the magnetic roller during magnetic separation, which will cause the accuracy of magnetic separation to become lower; when the method of melting the film is used, it will cause pollution and the film cannot be collected. Utility Model Content

[0005] A technical problem to be solved by the present disclosure is that when the positive electrode sheets, negative electrode sheets and separators in lithium batteries are sorted, a small amount of separator microsheets may overlap and adhere to the surface of the positive electrode sheets or negative electrode sheets, resulting in a decrease in the magnetic separation accuracy during the subsequent magnetic separation.

[0006] In order to solve the above technical problems, the present disclosure provides a device for rubbing and separating a pole piece and a diaphragm, which comprises:

[0007] The device body includes a first rubbing mechanism, a second rubbing mechanism and a conveyor belt, the first rubbing mechanism and the second rubbing mechanism extend along a first direction, the first rubbing mechanism and the second rubbing mechanism are alternately arranged along a second direction, the first rubbing mechanism and the second rubbing mechanism are respectively connected to the conveyor belt, the conveyor belt is located between the first rubbing mechanism and the second rubbing mechanism, and the first rubbing mechanism reciprocates relative to the device body along the second direction to be close to or away from the second rubbing mechanism to achieve extrusion or release of the material;

[0008] Among them, the first direction is the conveying direction of the material, the second direction is the gravity direction, and the first rubbing mechanism and the second rubbing mechanism are connected to an external control device to drive the conveyor belt to move through differential motion to achieve material rubbing.

[0009] In some embodiments, the aforementioned pole piece and diaphragm rubbing and separating device, wherein the first rubbing and separating mechanism comprises a plurality of upper guide rollers and a plurality of pressure devices;

[0010] A plurality of upper guide rollers are arranged at intervals along the first direction, and the positions of the plurality of pressure devices correspond one to one with the positions of the plurality of upper guide rollers, so as to adjust the pressure of the plurality of upper guide rollers on the conveyor belt to ensure smooth transportation of materials along the first direction.

[0011] In some embodiments, the aforementioned pole piece and diaphragm rubbing and separating device, wherein the pressure device comprises a pressure spring and an adjusting rod;

[0012] The pressure spring is located between the adjusting rod and the upper guide roller. The pressure spring is used to reduce the impact force of several upper guide rollers on the second rubbing mechanism. The adjusting rod is fixedly connected to the device body. An adjusting nut is provided on the side of the adjusting rod away from the upper guide roller. The adjusting nut is connected to the pressure spring to adjust the telescopic range of the pressure spring.

[0013] In some embodiments, in the aforementioned pole piece and diaphragm rubbing and separating device, the second rubbing and separating mechanism comprises a plurality of lower guide rollers; the plurality of lower guide rollers are arranged at intervals along the first direction.

[0014] In some embodiments, in the aforementioned pole piece and diaphragm rubbing and separating device, the feed end of the device body is provided with brushes at intervals along a third direction to prevent leakage of materials; wherein the third direction is perpendicular to the first direction and the second direction.

[0015] In some embodiments, in the aforementioned pole piece and diaphragm rubbing and separating device, the rotation speed of the first rubbing and separating mechanism is greater than the rotation speed of the second rubbing and separating mechanism.

[0016] In some embodiments, in the aforementioned pole piece and diaphragm rubbing and separating device, the contact surface between the conveyor belt and the material is provided with corrugations to increase the friction between the contact surface between the conveyor belt and the material.

[0017] In some embodiments, in the aforementioned pole piece and diaphragm rubbing and separating device, when the first rubbing and separating mechanism and the second rubbing and separating mechanism are in close contact with each other, the projection of the conveyor belt along the third direction is a horizontal "S" shape.

[0018] A second aspect of the present application provides a rubbing and separation system, which includes the aforementioned pole piece and diaphragm rubbing and separation device.

[0019] Through the above technical scheme, the present invention provides a pole piece and diaphragm rubbing separation device and system, which has a movable first rubbing separation mechanism close to the second rubbing separation mechanism, and drives the first rubbing separation mechanism and the second rubbing separation mechanism to rotate at different speeds at the same time, so as to separate the pole piece and the diaphragm that are stuck together, and complete the transportation of the pole piece and the film as the conveyor belt moves, so that the subsequent magnetic separation of the film and the pole piece is more accurate, and the film can also be accurately collected, avoiding the problem of pollution caused by the melted film. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to more clearly illustrate the embodiments of the present disclosure or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present disclosure. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0021] Figure 1 It is a schematic diagram of the three-dimensional structure of a pole piece and diaphragm rubbing and separating device disclosed in an embodiment of the present disclosure;

[0022] Figure 2 It is an enlarged structural schematic diagram of a device body of a pole piece and diaphragm rubbing and separating device disclosed in an embodiment of the present disclosure.

[0023] Description of reference numerals:

[0024] 1. Device body; 2. First rubbing mechanism; 21. Upper guide roller; 22. Pressure device; 221. Pressure spring; 222. Adjusting rod; 3. Second rubbing mechanism; 31. Lower guide roller; 4. Conveyor belt; 5. Adjusting nut; 6. Brush; a. First direction; b. Second direction; c. Third direction. DETAILED DESCRIPTION

[0025] The following is a further detailed description of the embodiments of the present disclosure in conjunction with the accompanying drawings and examples. The detailed description of the following embodiments and the accompanying drawings are used to exemplarily illustrate the principles of the present disclosure, but cannot be used to limit the scope of the present disclosure. The present disclosure can be implemented in many different forms and is not limited to the specific embodiments disclosed herein, but includes all technical solutions that fall within the scope of the claims.

[0026] The present disclosure provides these embodiments to make the present disclosure thorough and complete, and to fully express the scope of the present disclosure to those skilled in the art. It should be noted that unless otherwise specifically stated, the relative arrangement of the parts and steps, the composition of the materials, the numerical expressions and the numerical values ​​set forth in these embodiments should be interpreted as being merely exemplary, and not as limiting.

[0027] It should be noted that, in the description of the present disclosure, unless otherwise specified, the meaning of "multiple" is greater than or equal to two; the terms "upper", "lower", "left", "right", "inner", "outer", etc., indicating the orientation or positional relationship, are only for the convenience of describing the present disclosure and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation of the present disclosure. When the absolute position of the object being described changes, the relative positional relationship may also change accordingly.

[0028] In addition, the words "first", "second" and similar words used in the present disclosure do not indicate any order, quantity or importance, but are only used to distinguish different parts. "Vertical" does not mean vertical in the strict sense, but is within the tolerance range. "Parallel" does not mean parallel in the strict sense, but is within the tolerance range. "Include" or "comprising" and similar words mean that the elements before the word include the elements listed after the word, and do not exclude the possibility of including other elements.

[0029] It should also be noted that in the description of the present disclosure, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" 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 directly connected or indirectly connected through an intermediate medium. For ordinary technicians in this field, the specific meanings of the above terms in the present disclosure can be understood according to the specific circumstances. When a specific device is described as being located between a first device and a second device, there may or may not be an intermediate device between the specific device and the first device or the second device.

[0030] All terms used in the present disclosure have the same meanings as those understood by those of ordinary skill in the art to which the present disclosure belongs, unless otherwise specifically defined. It should also be understood that terms defined in general dictionaries, for example, should be interpreted as having meanings consistent with their meanings in the context of the relevant technology, and should not be interpreted in an idealized or extremely formal sense, unless explicitly defined as such herein.

[0031] Technologies, methods, and equipment known to ordinary technicians in the relevant art may not be discussed in detail, but where appropriate, the technologies, methods, and equipment should be considered part of the specification.

[0032] Embodiment 1

[0033] Reference Figure 1 and attached Figure 2The present embodiment discloses a pole piece and diaphragm rubbing and separating device, which comprises a device body 1, wherein a first rubbing and separating mechanism 2, a second rubbing and separating mechanism 3 and a conveyor belt 4 are arranged inside the device body 1, the first rubbing and separating mechanism 2 and the second rubbing and separating mechanism 3 extend along a first direction a, the first rubbing and separating mechanism 2 and the second rubbing and separating mechanism 3 are arranged alternately along a second direction b, the first rubbing and separating mechanism 2 and the second rubbing and separating mechanism 3 are respectively connected to the conveyor belt 4, the conveyor belt 4 is located between the first rubbing and separating mechanism 2 and the second rubbing and separating mechanism 3, the first rubbing and separating mechanism 2 moves back and forth relative to the device body 1 along the second direction b, so as to be close to or away from the second rubbing and separating mechanism 3 to achieve the extrusion or release of the material; wherein the first direction a is the conveying direction of the material, the second direction b is the gravity direction, the first rubbing and separating mechanism 2 and the second rubbing and separating mechanism 3 are connected to an external control device, so as to drive the conveyor belt 4 to move by rotating at different speeds, so as to achieve the rubbing and separating of the material.

[0034] Specifically, in order to solve the problem of material overlap when the positive electrode sheets, negative electrode sheets and diaphragms are sorted, resulting in low accuracy during magnetic separation and the inability to collect thin films, the electrode sheet and diaphragm rubbing separation device provided in this embodiment has a first rubbing mechanism 2 that moves to fit the second rubbing mechanism 3 after the material enters the device body 1, and at the same time, the first rubbing mechanism 2 and the second rubbing mechanism 3 are driven by an external controller to rotate at different speeds, so that the electrode sheets and diaphragms that are stuck together can be separated, and the pole sheets and thin films can be transported as the conveyor belt 4 moves, thereby improving the accuracy of the subsequent magnetic separation.

[0035] Among them, the electrode and diaphragm rubbing device provided in this embodiment is mainly used for separating positive and negative electrode sheets. The device body 1, the device body 1 is provided with a first rubbing mechanism 2, a second rubbing mechanism 3 and a conveyor belt 4, wherein the first rubbing mechanism 2 and the second rubbing mechanism 3 are both general terms for electrode rubbing devices, the first rubbing mechanism 2 moves back and forth along the second direction b relative to the device body 1, that is, the first rubbing mechanism 2 can be close to or away from the second rubbing mechanism 3 to achieve the extrusion or release of the material, and at the same time, when the first rubbing mechanism 2 and the second rubbing mechanism 3 are close to each other, the projection of the conveyor belt 4 along the third direction c is a horizontal "S" shape. It can be understood that when the conveyor belt 4 is transported in this shape, the first rubbing mechanism 2 can be moved back and forth along the second direction b. Both the first and second rubbing mechanisms 3 can rub the materials, thereby improving the rubbing effect of the materials; the conveyor belt 4 can be but is not limited to belt transmission, and the conveyor belt 4 is located between the first rubbing mechanism 2 and the second rubbing mechanism 3, that is, the first rubbing mechanism 2 and the second rubbing mechanism 3 act on the conveyor belt 4 to realize the rubbing and transportation of the materials, and at the same time, the contact surface between the conveyor belt 4 and the material is provided with corrugations. It can be understood that when the conveyor belt 4 is rubbed under the action of the first rubbing mechanism 2 and the second rubbing mechanism 3, the corrugations can increase the friction force of the contact surface between the conveyor belt 4 and the material, thereby preventing the conveyor belts 4 from slipping and affecting the rubbing of the materials.

[0036] The term "and / or" in this article is merely a description of the association relationship of associated objects, identifying three possible relationships. For example, A and / or B is specifically understood as: A and B can be included at the same time, A can exist alone, or B can exist alone, and any of the above three situations can be met.

[0037] In some embodiments, refer to the attached Figure 1 and attached Figure 2 In the present embodiment of the electrode and diaphragm rubbing and separating device, in a specific implementation, the first rubbing and separating mechanism 2 includes a plurality of upper guide rollers 21 and a plurality of pressure devices 22; the plurality of upper guide rollers 21 are arranged at intervals along the first direction a, and the positions of the plurality of pressure devices 22 correspond one by one to the positions of the plurality of upper guide rollers 21, so as to adjust the pressure of the plurality of upper guide rollers 21 on the conveyor belt 4 to ensure smooth transportation of the material along the first direction a.

[0038] Specifically, in order to ensure the rubbing effect, the first rubbing mechanism 2 in this embodiment includes a plurality of upper guide rollers 21 and a plurality of pressure devices 22, wherein the upper guide rollers 21 are metal cylindrical round rollers, and the plurality of upper guide rollers 21 are arranged at intervals along the first direction a, and the positions of the plurality of pressure devices 22 correspond to the positions of the plurality of upper guide rollers 21 one by one, wherein the pressure device 22 includes a pressure spring 221 and an adjusting rod 222; the pressure spring 221 is located between the adjusting rod 222 and the upper guide roller 21, and it can be understood that the pressure spring 221 can be used to reduce the impact force of the plurality of upper guide rollers 21 on the second rubbing mechanism 3, and the second rubbing mechanism 3 is used for rubbing. During the time division, the pressure of the upper guide roller 21 can be adjusted by the pressure spring 221 to prevent blockage during material transportation; the adjusting rod 222 is fixedly connected to the mounting body, and an adjusting nut 5 is provided on the side of the adjusting rod 222 away from the upper guide roller 21, and the adjusting nut 5 is connected to the pressure spring 221. It can be understood that by rotating the adjusting nut 5 on the adjusting rod 222, the telescopic range of the pressure spring 221 can be changed, thereby adjusting the pressure effect of the upper guide roller 21 on the second rubbing mechanism 3 to prevent excessive pressure from affecting the transportation of materials. The adjusting nut 5 can be rotated according to the actual production situation to ensure the normal rubbing and transportation.

[0039] In some embodiments, refer to the attached Figure 1 and attached Figure 2 In the pole piece and diaphragm rubbing and separating device provided in this embodiment, in a specific implementation, the second rubbing and separating mechanism 3 includes a plurality of lower guide rollers 31; the plurality of lower guide rollers 31 are arranged at intervals along the first direction a.

[0040] Specifically, in order to ensure the rubbing and separating effect, in this embodiment, the second rubbing and separating mechanism 3 includes a plurality of lower guide rollers 31, wherein the lower guide rollers 31 have the same structure as the upper guide rollers 21, and the plurality of lower guide rollers 31 are arranged at intervals along the first direction a. It can be understood that the lower guide rollers 31 are arranged at intervals and staggered relative to the upper guide rollers 21 to ensure that the conveyor belt 4 forms an "S" shape, thereby ensuring the optimal rubbing and separating effect on the materials.

[0041] In some embodiments, refer to the attached Figure 1 and attached Figure 2 In the specific implementation of the electrode and diaphragm rubbing device provided in this embodiment, the feed end of the device body 1 is provided with brushes 6 at intervals along the third direction c to prevent leakage of materials; wherein the third direction c is perpendicular to the first direction a and the second direction b.

[0042] Specifically, in order to avoid leakage of materials, in this embodiment, the feed end of the device body 1 is provided with brushes 6 at intervals along the third direction c. It can be understood that when the material is transported to the device body 1, if the single volume is too large, it will leak from both sides of the feed end of the device body 1. By setting the brushes 6, the leakage of materials can be prevented, thereby ensuring the continuity of material transportation.

[0043] In some embodiments, refer to the attached Figure 1 and attached Figure 2 In the pole piece and diaphragm rubbing and separating device provided in this embodiment, in a specific implementation, the rotation speed of the first rubbing and separating mechanism 2 is greater than the rotation speed of the second rubbing and separating mechanism 3.

[0044] Specifically, in order to ensure stable transportation of materials, in this embodiment, the rotation speed of the first rubbing mechanism 2 is greater than the rotation speed of the second rubbing mechanism 3. It can be understood that the rotation speed of the first rubbing mechanism 2 is greater than the rotation speed of the second rubbing mechanism 3, which can not only provide sufficient pressure through the conveyor belt 4, but also provide sufficient power for the transportation of materials, thereby maximizing production capacity.

[0045] Embodiment 2

[0046] This embodiment provides a rubbing system, which includes at least one pole piece and diaphragm rubbing device. Specifically, the pole piece and diaphragm rubbing device is the pole piece and diaphragm rubbing device of embodiment 1. Please refer to the description of embodiment 1 for its specific structure and working principle, and no further details will be given here.

[0047] So far, various embodiments of the present disclosure have been described in detail. In order to avoid obscuring the concept of the present disclosure, some details known in the art are not described. Based on the above description, those skilled in the art can fully understand how to implement the technical solution disclosed here.

[0048] Although some specific embodiments of the present disclosure have been described in detail by way of examples, it should be understood by those skilled in the art that the above examples are for illustration only and are not intended to limit the scope of the present disclosure. It should be understood by those skilled in the art that the above embodiments may be modified or some technical features may be replaced by equivalents without departing from the scope and spirit of the present disclosure. In particular, the various technical features mentioned in the various embodiments may be combined in any manner as long as there is no structural conflict.

Claims

1. A device for rubbing and separating a pole piece and a diaphragm, characterized in that: include: A device body (1), wherein a first rubbing mechanism (2), a second rubbing mechanism (3) and a conveyor belt (4) are arranged inside the device body (1), the first rubbing mechanism (2) and the second rubbing mechanism (3) extend along a first direction, the first rubbing mechanism (2) and the second rubbing mechanism (3) are arranged alternately along a second direction, the first rubbing mechanism (2) and the second rubbing mechanism (3) are respectively connected to the conveyor belt (4), the conveyor belt (4) is located between the first rubbing mechanism (2) and the second rubbing mechanism (3), and the first rubbing mechanism (2) moves back and forth relative to the device body (1) along the second direction to closely contact or move away from the second rubbing mechanism (3) to achieve squeezing or releasing of the material; The first direction is the conveying direction of the material, the second direction is the gravity direction, and the first rubbing mechanism (2) and the second rubbing mechanism (3) are connected to an external control device to drive the conveyor belt to move through differential motion to achieve rubbing of the material.

2. A pole piece and diaphragm rubbing and separating device according to claim 1, characterized in that: The first rolling and separating mechanism (2) comprises a plurality of upper guide rollers (21) and a plurality of pressure devices (22); The plurality of upper guide rollers (21) are arranged at intervals along the first direction, and the positions of the plurality of pressure devices (22) correspond one-to-one to the positions of the plurality of upper guide rollers (21), so as to regulate the pressure of the plurality of upper guide rollers (21) on the conveyor belt (4) to ensure that the material is smoothly transported along the first direction.

3. A pole piece and diaphragm rubbing and separating device according to claim 2, characterized in that: The pressure device (22) comprises a pressure spring (221) and an adjustment rod (222); The pressure spring (221) is located between the adjustment rod (222) and the upper guide roller (21), and the pressure spring (221) is used to reduce the impact force of the plurality of upper guide rollers (21) on the second rubbing mechanism (3). The adjustment rod (222) is fixedly connected to the device body (1), and an adjustment nut (5) is provided on the side of the adjustment rod (222) away from the upper guide roller (21). The adjustment nut (5) is connected to the pressure spring (221) to adjust the telescopic range of the pressure spring (221).

4. A pole piece and diaphragm rubbing and separating device according to claim 1, characterized in that: The second rubbing and separating mechanism (3) comprises a plurality of lower guide rollers (31); The plurality of lower guide rollers (31) are arranged at intervals along the first direction.

5. The pole piece and diaphragm rubbing and separating device according to claim 1, characterized in that: The feed end of the device body (1) is provided with baffle brushes (6) at intervals along the third direction to prevent leakage of the material; The third direction is perpendicular to the first direction and the second direction.

6. The pole piece and diaphragm rubbing and separating device according to claim 1, characterized in that: The rotation speed of the first rubbing mechanism (2) is greater than the rotation speed of the second rubbing mechanism (3).

7. The pole piece and diaphragm rubbing and separating device according to claim 1, characterized in that: The contact surface between the conveyor belt (4) and the material is provided with a corrugated layer to increase the friction between the contact surface between the conveyor belt and the material.

8. The pole piece and diaphragm rubbing and separating device according to claim 1, characterized in that: When the first rubbing and separating mechanism (2) and the second rubbing and separating mechanism (3) are in close contact with each other, the projection of the conveyor belt (4) along the third direction is a horizontal "S" shape.

9. A rubbing and scoring system, characterized in that: It includes: At least the pole piece and diaphragm rubbing and separating device as described in any one of claims 1-8.

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