CN118073698A

CN118073698A - Lithium battery pole piece material separation equipment

Info

Publication number: CN118073698A
Application number: CN202410148233.XA
Authority: CN
Inventors: 孙大力
Original assignee: Beijing Carbon Land Technology Co ltd
Current assignee: Beijing Carbon Land Technology Co ltd
Priority date: 2024-02-02
Filing date: 2024-02-02
Publication date: 2024-05-24

Abstract

The invention belongs to the technical field of environmental protection equipment, and discloses lithium battery pole piece material separation equipment, which comprises a shell, a separation assembly, a feeding bin, a material distribution assembly, a conveying assembly and a collection assembly, wherein the separation assembly consists of a vibration generator and a vibration adjuster, can generate vibration and adjust the vibration to a proper working state, the material distribution assembly comprises a carrying mechanism and a material absorber, can carry materials under the action of negative pressure, and the collection assembly can realize the separation of large and small particles in the materials. The device adopts the mechanical vibration principle to realize the separation of the current collector and the active material, the damage to the current collector is small, the resource recovery ratio is improved, and the value of the recovered material is improved.

Description

Lithium battery pole piece material separation equipment

Technical Field

The invention belongs to the technical field of environmental protection equipment, relates to technical equipment for recycling solid wastes of lithium battery pole pieces, and particularly relates to equipment for recycling waste pole piece resources and application thereof.

Background

With the high-speed development of the lithium battery field, the quantity of produced lithium batteries is in explosive growth, and with the consumption of service life, more and more waste lithium batteries need to be treated. At present, the waste lithium batteries are recycled, and the battery cores still having the utilization value are recycled into a proper use scene by taking echelon utilization as the first step. And (5) carrying out regeneration treatment on the cells which cannot be reused. The usual processing method is as follows: crushing and sorting, wet leaching and valuable metal resource recovery. In the crushing and sorting link, the whole battery cell is crushed and powdered, the main materials in the battery cell are mixed together, and then the separation of different materials is realized by means of air separation, magnetic separation, gravity separation, color separation, screening and the like. This has the disadvantage that the various materials are blended with one another and it is difficult to achieve very high purity of the sort. There are some improvement techniques to finely disassemble the battery cell, separate the case, the diaphragm, the pole piece, and the electrolyte, and separately process them, thus greatly reducing the blending of materials, but for the pole piece, there is a problem that the current collector and the active material attached thereon are difficult to separate. This problem is solved, usually also by means of breaking up and sorting, the current collector and the active material are separated. The purity of such separation is difficult to reach a high level. Therefore, it is necessary to develop a new device to solve the problem of fine separation of the current collector from the active material.

Disclosure of Invention

In view of the above problems, the invention aims to overcome the defects of the prior art, and provides a lithium battery pole piece material separation device which can finely separate a current collector from an active material, thereby improving the recovery rate of resources, improving the purity of recovered resources, saving labor force consumption and improving the labor environment.

The technical scheme adopted for solving the technical problems is as follows:

A vibration separation device (1) is used for separating materials on a lithium battery pole piece, and consists of a vibration generator (1-1) and a vibration adjuster (1-2), wherein the vibration type generated by the vibration generator (1-1) is selected from one of mechanical vibration, sound wave, infrasonic wave and ultrasonic wave. The frequency of the vibration generated is in the range of 10Hz-100 kHz. Under proper frequency, the vibration generated by the vibration generator (1-1) does not need to be conducted by adding liquid medium, so that the material separation efficiency can reach more than 99.5%. The vibration generator (1-1) adopts electric or pneumatic power as an energy source. The vibration adjuster (1-2) is arranged between the vibration generator (1-1) and the material to be processed.

The distance between the vibration generator (1-1) and the vibration regulator (1-2) is 0-500mm, and the distance between the vibration regulator (1-2) and the processed material is 0-500mm. The vibration generator (1-1), the vibration adjuster (1-2) and the positioning structure thereof have sufficient rigidity to keep the relative distance fixed.

The vibration adjuster (1-2) has a plate or box shape having at least one flat surface. The vibration wave-shaping device has the advantages that the effects of reflection, resonance, absorption, amplification and the like on vibration are realized through the characteristics of the self material and the shape of the vibration wave-shaping device, and the vibration wave-shaping device is used for changing the waveform of vibration wave conduction, so that the intensity and the layout of the vibration are changed, and the vibration conducted to the processed material is in a controlled range. The included angle between the vibration regulator (1-2) and the placing plane of the processed material is 0-45 degrees. A metallic or non-metallic material is used.

A lithium battery pole piece material separation device, comprising a shell (2), a separation component (3), one or more components of a feeding bin (4), a material distribution component (5), a conveying component (6) and a collection component (7), wherein the separation component (3) comprises the vibration separation device (1) according to claim 1.

The appearance of the feeding bin (4) is a cuboid container, the top or the side wall of the feeding bin is provided with an opening, the feeding bin is connected with the shell, a sealable door is arranged at a corresponding position of the shell, and the relative movement of the feeding bin and the shell can be realized through standard mechanical structures such as a track, a pulley and the like. The infrared sensing device is arranged on the side wall of the feeding bin, the thickness of the material stack can be judged, and the lifting mechanism and the tray are arranged at the bottom of the feeding bin and are adjusted according to the thickness of the material.

The cloth component (5) comprises a conveying mechanism (5-1) and a suction device (5-2). The carrying mechanism (5-1) is provided with a fixed point which is connected with the shell, the carrying mechanism (5-1) can change the shape and the posture of the carrying mechanism, and the suction device (5-2) arranged on the carrying mechanism (5-1) can realize the translation and the rotation of the space in the shell. The aspirator (5-2) has a negative pressure aspiration capability, the negative pressure being provided by an external system. The aspirator (5-2) is provided with one or a plurality of aspirator nozzles, and the aspirator direction is vertical to the plane where the materials are placed. The set negative pressure value and the suction nozzle parameter are designed according to the weight of the processed material. The valve is arranged on the gas path of the suction device, which can be rapidly opened and closed to provide or cut off negative pressure.

The conveying assembly (6) is connected with the cloth assembly (5), the separating assembly (3) and the collecting assembly (7), and adopts common conveying modes such as belt type, roller type, chain plate and the like. Part of the conveying component can reach the position of the moving end of the carrying mechanism (5-1), can reach the influence area of the vibration generator (1-1) in the separating component, can provide accommodation and support for the processed materials, and can reach the receiving port of the collecting component (7).

The separation assembly (3) comprises a vibration separation device (1) and a position adjusting mechanism (3-1). The position adjusting mechanism (3-1) is fixedly arranged on the shell, and the vibration separating device (1) arranged on the position adjusting mechanism (3-1) can realize the translation and rotation of the space in the shell by changing the shape and the posture of the vibration separating device. The position adjusting mechanism (3-1) adopts a common mechanical structure form such as a link mechanism, a sliding block mechanism, a mechanical arm and the like. The vibration separating device (1) is arranged on the moving end of the position adjusting mechanism, and the relative position and posture between the vibration separating device and the processed material can be adjusted through the position adjusting mechanism (3-1).

The collecting assembly (7) comprises a collecting container (7-1), a receiving opening (7-2), a powder material outlet (7-3), a large material outlet (7-4), an air inlet (7-5) and an air outlet (7-6). The material receiving opening is connected with the conveying component and keeps sealed with the shell. The collecting container comprises a separation unit (7-7) for powder and large materials. The separation unit (7-7) is used for separating powder materials from large materials in one or more combination modes of screen mesh, airflow, gravity, inertia and the like, and the separated materials are discharged through the powder material outlet (7-3) and the large material outlet (7-4) respectively. The side wall of the collecting container is provided with an air inlet (7-5), and the top is provided with an air outlet (7-6). The exhaust port (7-6) of the collecting container is connected with the dust remover (7-8).

The housing (2) has sufficient strength and rigidity to enable gas sealing. When the shell is in work, the shell keeps a positive pressure state, the gas can be protective gas such as air, nitrogen and the like, and the gas is provided from outside the system.

The invention has the advantages and positive effects that:

1. the device adopts the mechanical vibration principle to realize the separation of the current collector and the active material, the mode has little damage to the current collector, can realize almost lossless separation, has the recovery rate of the material approaching 100 percent, obviously improves the proportion of resource recovery compared with the recovery method of crushing and powdering, and generates larger economic value.

2. The device has the characteristic of adjustable vibration intensity, can work under the condition of being suitable for separation intensity, can realize complete recovery to the current collector, can not break into powder state, and to the active material, little mix into current collector powder therein, has obvious simplification effect to the processing of follow-up technology, and the recovered current collector and active material powder are convenient for high-value utilization.

3. The device has high automation degree, realizes automatic production from the pole piece to two products, greatly improves the production efficiency, simultaneously works in a fully sealed state, and prevents dust emission in the production process by dust removal treatment of exhaust gas, thereby improving the working environment.

Drawings

Fig. 1 is a schematic structural diagram of a lithium battery pole piece material separation device in the invention.

The reference numerals are as follows:

The device comprises a vibration separation device (1), a vibration generator (1-1), a vibration adjuster (1-2), a shell (2), a separation assembly (3), a position adjustment mechanism (3-1), a feeding bin (4), a material distribution assembly (5-1), a conveying mechanism (5-2), a material suction device (6), a conveying assembly (7) a collecting assembly (7-1) a collecting container (7-2), a material receiving opening (7-3), a powder material outlet (7-4) a large material outlet (7-5), an air inlet (7-6), an air outlet (7-7) a separation unit (7-8) and a dust remover.

Detailed Description

The invention will now be further illustrated by reference to the following examples, which are intended to be illustrative, not limiting, and are not intended to limit the scope of the invention.

Various conventional means involved in the specific embodiments are conventional in the art, and a person skilled in the art may refer to various conventional specifications, technical literature or related specifications, manuals, etc. before the date of application of the present invention, where no particular remarks are made in this text.

A lithium battery pole piece material separation device comprises a core component vibration separation device (1), and the separation of a battery pole piece current collector and an active substance attached to the battery pole piece current collector is realized by utilizing the principle of vibration. The structure of which is shown in figure 1. The vibration separating device (1) consists of a vibration generator (1-1) and a vibration adjuster (1-2), wherein the vibration generator (1-1) is a device for generating a vibration source, and the generated vibration can be one of mechanical vibration, sound wave, infrasonic wave and ultrasonic wave. The frequency of the vibration generated is in the range of 10Hz-100 kHz. Under proper frequency, the vibration generated by the vibration generator (1-1) does not need to be conducted by adding liquid medium, so that the material separation efficiency can reach more than 99.5%. The vibration generator (1-1) adopts electric or pneumatic power as an energy source.

Between the vibration generator (1-1) and the material to be processed, a vibration adjuster (1-2) can be arranged, and the effects of reflection, resonance, absorption, amplification and the like on vibration are realized by the characteristics of the material and the shape of the vibration adjuster, so that the waveform during vibration wave conduction is changed, and the intensity and the layout of the vibration are changed, so that the vibration transmitted to the material to be processed is in a controlled range. If the self-vibration characteristics of the material to be processed are compatible with the vibration generating device, the vibration adjuster may not be provided. The vibration regulator (1-2) can be set as a flat plate, and can be transmitted out in a plane after receiving vibration through the flat plate, and can also be set as a box type so as to change the vibration frequency of the vibration regulator and achieve different vibration control effects. For more uniform propagation, the direction facing the processed material is a plane, the included angle between the plane and the material bearing plane can be adjusted according to the property of the material, the angle is 0-45 degrees, and the angle can be adjusted in the processing process. Different metal or nonmetal materials are adopted in combination with different requirements on the self-vibration frequency of the vibration regulator (1-2), and the materials with proper characteristics are selected in cooperation with the shape of the self-vibration regulator.

The distance between the vibration generator (1-1) and the vibration regulator (1-2) is selected according to the vibration frequency, material characteristics and other factors, and is usually 0-500mm, and in order to keep the distance fixed, the vibration generator, the vibration regulator and the positioning structure thereof have enough rigidity.

The lithium battery pole piece material separation equipment at least comprises a shell (2) and a separation assembly (3), and can be additionally provided with a feeding bin (4), a material distribution assembly (5), a conveying assembly (6), a collection assembly (7) and other components according to the functional requirement. The vibration separating device (1) is part of a separating assembly (3).

The housing (2) serves to support the entire equipment components and to provide a sealed environment for the equipment. Has enough strength and rigidity, and can realize gas sealing. When the shell is in work, the shell keeps a positive pressure state, the gas can be protective gas such as air, nitrogen and the like, and the gas is provided from outside the system.

The feeding bin (4) can be designed into a cuboid container similar to a drawer, the top or the side wall of the cuboid container is provided with an opening, and sheet materials are stacked in the container through the opening of the container. The container can play a role in supporting and roughly positioning materials. The container is connected with the shell, and the relative movement of the feeding bin and the shell is realized through standard mechanical structures such as a track, a pulley and the like. A sealable door is arranged at a corresponding position of the shell, so that the tightness of the whole equipment is maintained. The infrared sensing device can be arranged on the side wall of the feeding bin, the thickness of the material stack can be judged, and the lifting mechanism and the tray which are adjusted to be high and low according to the thickness of the material are arranged at the bottom of the feeding bin.

The cloth component (5) comprises a conveying mechanism (5-1) and a suction device (5-2). The carrying mechanism (5-1) is provided with a fixed point which is connected with the shell, and the carrying mechanism can change the shape and the posture of the carrying mechanism, so that the suction device (5-2) arranged on the carrying mechanism (5-1) can realize the translation and the rotation of the space in the shell. The aspirator (5-2) has a negative pressure aspiration capability, the negative pressure being provided by an external system. The suction device is provided with one or more suction nozzles, and the suction direction is perpendicular to the plane where the materials are placed. The set negative pressure value and the suction nozzle parameter are designed according to the weight of the processed material. The valve is arranged on the gas path of the suction device, which can be rapidly opened and closed to provide or cut off negative pressure.

The conveying assembly (6) plays a role in conveying materials, and can convey the materials from the distribution assembly (5) area to the separation assembly (3) area and the feed inlet of the collection assembly. The material is conveyed to the separation assembly (3) from the material distribution assembly (5) as a starting point, reaches the influence area of the vibration generator (1-1) in the separation assembly, and is conveyed to the material receiving opening (7-2) of the collection assembly (7) after vibration separation. The conveying component (6) adopts common conveying forms such as belt type, roller type, chain plate and the like. The conveyor assembly is capable of providing containment and support for the material being processed.

The separation assembly (3) is used for providing a vibration source and adjusting the relative position of the vibration source and the material. Comprises a vibration separation device (1) and a position adjusting mechanism (3-1). The position adjusting mechanism (3-1) is fixedly arranged on the shell, the vibration separating device (1) arranged on the position adjusting mechanism can be moved to any position of the influence area of the vibration generator by changing the posture position of the position adjusting mechanism, and the position adjusting mechanism (3-1) adopts the common mechanical structure forms of a connecting rod mechanism, a sliding block mechanism, a mechanical arm and the like. The vibration separation device is arranged on the moving end of the position adjusting mechanism, and the relative position and the posture between the vibration separation device and the processed material can be adjusted through the position adjusting mechanism.

The collecting component (7) plays a role in tightening the separated materials and separates the powder materials from the large materials. The core part is a collecting container (7-1), and the collecting container is provided with a receiving port (7-2), a powder material outlet (7-3), a large material outlet (7-4), an air inlet (7-5), an air outlet (7-6) and other interfaces. The receiving opening (7-2) is connected with the conveying component (6) and keeps sealing with the shell. The collecting container (7-1) comprises a separation unit (7-7) for powder and large materials. The separation of the powder material and the large material is realized by one or more combination modes of sieving, airflow separation, gravity separation, inertial separation and the like, and the separated materials are respectively discharged through a powder material outlet (7-3) and a large material outlet (7-4). The side wall of the collecting container is provided with an air inlet (7-5), the top is provided with an air outlet (7-6), powder and flaky or massive materials are easier to separate under the action of air flow, and the separation effect can be improved. The exhaust port of the collecting container is connected with a dust remover (7-8) to remove dust from the discharged tail gas.

An exemplary embodiment is described below.

In the embodiment, the lithium battery pole piece material separation device is designed into a form of horizontal feeding and horizontal conveying. The materials enter the equipment from the feeding bin (4), stacked materials are stacked one by one to the conveying assembly (6) through the distributing assembly (5), the stacked materials are conveyed to the separating assembly (3) through the conveying assembly (6) to be separated, and finally the stacked materials are conveyed to the collecting assembly (7) to be separated and then are respectively collected.

The feeding bin (4) adopts a drawer type, the length and the width are divided into about 350mm, 250mm and 150mm, the bottom is flat bottom, and for convenient feeding and transportation, the wall plates at the two sides only keep the lower part and the height is about 50 mm. An infrared sensing device is arranged on the side wall of the drawer, and a feeding signal is output when the material is lower than the detection range of the sensing device. The bottom of the feeding bin is provided with a wheel type guide rail which is connected with the shell, and the feeding bin and the shell can move horizontally. And during feeding, the feeding bin is pulled out of the shell. The materials to be treated are 30 to 50 laminated sheets into a group, put into a feeding bin, pushed into the feeding bin, and closed and kept sealed.

The carrying mechanism (5-1) of the cloth component (5) adopts a four-axis parallel robot, and the movement radius is 400mm. And 4 vacuum suckers (5-2) are arranged at the tail end of the actuating mechanism and are horizontally arranged in a plane and are arranged in a rectangular shape. The carrying mechanism sucks one top sheet of the stacked pole pieces from the feeding bin and moves the stacked pole pieces to conveying equipment of the conveying assembly.

The conveying component (6) adopts chain plates for conveying, the conveying length is about 1000mm, and the separating component (3) is positioned above the middle part of the conveying equipment. And the material is influenced from top to bottom. The material is transported to this zone where the conveyor device stays. After a period of vibration separation, the pole piece and the powder are separated and are conveyed to a receiving port of the collecting assembly (7) together.

The vibration generator (1-1) adopts a resonant cavity type sound wave generator, the sound amplifying opening adopts a hyperbolic shape, and the sound generating distance from top to bottom is 500mm. The sound wave frequency ranges from 30 Hz to 3000Hz, and the compressed air is used as a power source. The vibration generating device (1-1) is arranged on the position adjusting mechanism (3-1), and the position adjusting mechanism (3-1) is a three-axis mechanical arm, so that translation of two degrees of freedom in the horizontal direction and lifting in the high-low direction can be realized. The vibration regulator (1-2) is of a steel plate box-shaped structure, and is arranged between the vibration generator (1-1) and the processed material, and is 300mm away from the vibration generator. The thickness of the steel plate is 0.5mm, and reinforcing ribs are arranged in the steel plate to control the self-vibration frequency of the steel plate.

The collecting container (7-1) is a vertical pressure tank, the middle part is provided with a screen (7-7), the screen is installed at 5 degrees with the horizontal direction, the aperture of the screen is 100 meshes, and a vibrating electrode is arranged on the frame of the screen. The mixture entering from the material receiving opening (7-2) falls into the lower part of the screen under the action of the vibration of the screen, and the large material is remained on the screen. The oversize material moves to a large material outlet (7-4) on the side wall under the action of vibration, and is discharged intermittently. The undersize remains at the bottom of the collection vessel and is periodically discharged. An air inlet (7-5) is provided at a position below the screen of the side wall of the pressure tank, and compressed air is intermittently supplied into the pipe for agitating the mixture on the screen. An exhaust port (7-6) is arranged at the top of the pressure tank, redundant gas is discharged, the exhaust port is connected with a dust remover (7-8), and the discharged tail gas is subjected to dust removal treatment.

Different types of vibration generators are selected to generate vibration with different frequencies, and the separation effects of the vibration generators with different frequencies are different, so that the separation effects of the vibration generators with different frequencies are compared, and comparison data are as follows:

Although embodiments of the present invention have been disclosed for illustrative purposes, those skilled in the art will appreciate that: various substitutions, changes and modifications are possible without departing from the spirit and scope of the invention and the appended claims, and therefore the scope of the invention is not limited to the disclosure of the embodiments.

Claims

1. A vibration separation device (1) for material separation on lithium battery pole pieces, which is characterized in that: the vibration separation device (1) is composed of a vibration generator (1-1) and a vibration adjuster (1-2), wherein the vibration type generated by the vibration generator (1-1) is selected from one of mechanical vibration, sound wave, infrasonic wave and ultrasonic wave. The frequency of the vibration generated is in the range of 10Hz-100 kHz. Under proper frequency, the vibration generated by the vibration generator (1-1) does not need to be conducted by adding liquid medium, so that the material separation efficiency can reach more than 99.5%. The vibration generator (1-1) adopts electric or pneumatic power as an energy source. The vibration adjuster (1-2) is arranged between the vibration generator (1-1) and the material to be processed.

2. The vibratory separation apparatus (1) of claim 1, wherein: the distance between the vibration generator (1-1) and the vibration regulator (1-2) is 0-500mm, and the distance between the vibration regulator (1-2) and the processed material is 0-500mm. The vibration generator (1-1), the vibration adjuster (1-2) and the positioning structure thereof have sufficient rigidity to keep the relative distance fixed.

3. The vibratory separation apparatus (1) of claim 1, wherein: the appearance of the vibration regulator (1-2) is a plate or box shape with at least one plane, and the included angle between the vibration regulator (1-2) and the placing plane of the processed material is 0-45 degrees. A metallic or non-metallic material is used.

4. A lithium battery pole piece material separation device is characterized in that: comprising a housing (2), a separation assembly (3) comprising one or more of a feed bin (4), a cloth assembly (5), a transport assembly (6), a collection assembly (7), said separation assembly (3) comprising a vibratory separation apparatus (1) according to claim 1.

5. The lithium battery pole piece material separation device according to claim 4, wherein: the appearance of the feeding bin (4) is a cuboid container, the top or the side wall of the feeding bin is provided with an opening, the feeding bin is connected with the shell, a sealable door is arranged at a corresponding position of the shell, and the relative movement of the feeding bin and the shell can be realized through standard mechanical structures such as a track, a pulley and the like.

6. The lithium battery pole piece material separation device according to claim 4, wherein: the cloth component (5) comprises a conveying mechanism (5-1) and a suction device (5-2). The carrying mechanism (5-1) is provided with a fixed point which is connected with the shell, the carrying mechanism (5-1) can change the shape and the posture of the carrying mechanism, and the suction device (5-2) arranged on the carrying mechanism (5-1) can realize the translation and the rotation of the space in the shell. The aspirator (5-2) has a negative pressure aspiration capability, the negative pressure being provided by an external system. The aspirator (5-2) is provided with one or a plurality of aspirator nozzles, and the aspirator direction is vertical to the plane where the materials are placed. The set negative pressure value and the suction nozzle parameter are designed according to the weight of the processed material. The valve is arranged on the gas path of the suction device, which can be rapidly opened and closed to provide or cut off negative pressure.

7. The lithium battery pole piece material separation device according to claim 4, wherein: the conveying assembly (6) is connected with the cloth assembly (5), the separating assembly (3) and the collecting assembly (7), and adopts common conveying modes such as belt type, roller type, chain plate and the like. Part of the conveying component can reach the position of the moving end of the carrying mechanism (5-1), can reach the influence area of the vibration generator (1-1) in the separating component, can provide accommodation and support for the processed materials, and can reach the receiving port of the collecting component (7).

8. The lithium battery pole piece material separation device according to claim 4, wherein: the separation assembly (3) comprises a vibration separation device (1) and a position adjusting mechanism (3-1). The position adjusting mechanism (3-1) is fixedly arranged on the shell, and the vibration separating device (1) arranged on the position adjusting mechanism (3-1) can realize the translation and rotation of the space in the shell by changing the shape and the posture of the vibration separating device. The position adjusting mechanism (3-1) adopts a common mechanical structure form such as a link mechanism, a sliding block mechanism, a mechanical arm and the like. The vibration separating device (1) is arranged on the moving end of the position adjusting mechanism, and the relative position and posture between the vibration separating device and the processed material can be adjusted through the position adjusting mechanism (3-1).

9. The lithium battery pole piece material separation device according to claim 4, wherein: the collecting assembly (7) comprises a collecting container (7-1), a receiving opening (7-2), a powder material outlet (7-3), a large material outlet (7-4), an air inlet (7-5) and an air outlet (7-6). The material receiving opening is connected with the conveying component and keeps sealed with the shell. The collecting container comprises a separation unit (7-7) for powder and large materials. The separation unit (7-7) is used for separating powder materials from large materials in one or more combination modes of screen mesh, airflow, gravity, inertia and the like, and the separated materials are discharged through the powder material outlet (7-3) and the large material outlet (7-4) respectively. The side wall of the collecting container is provided with an air inlet (7-5), and the top is provided with an air outlet (7-6). The exhaust port (7-6) of the collecting container is connected with the dust remover (7-8).

10. The lithium battery pole piece material separation device according to claim 4, wherein: the housing (2) has sufficient strength and rigidity to enable gas sealing. When the shell is in work, the shell keeps a positive pressure state, the gas can be protective gas such as air, nitrogen and the like, and the gas is provided from outside the system.

11. The feed bin (4) of claim 5, wherein: the infrared sensing device is arranged on the side wall of the feeding bin, the thickness of the material stack can be judged, and the lifting mechanism and the tray are arranged at the bottom of the feeding bin and are adjusted according to the thickness of the material.

12. Use of a lithium battery pole piece material separation device according to any one of claims 1 to 11 for separating a lithium battery pole piece current collector from an adherent thereon.