An electrode sheet separating device and a lithium battery recycling line

Abstract

The application discloses a kind of pole piece separating device and lithium battery recycling line, it is related to lithium battery recycling technical field.The pole piece separating device includes stripping groove, filter screen, vibrator, switch mechanism, liquid injection mechanism and fishing mechanism.Filter screen is set in stripping groove, to separate and form separation cavity and fishing cavity with stripping groove, liquid injection mechanism is installed in stripping groove, filter screen is used to stop pole piece fragment, vibrator is connected with filter screen, vibrator is used to drive filter screen vibration, switch mechanism is installed in stripping groove, and is connected with filter screen, switch mechanism is used to drive filter screen movement to communicate separation cavity and fishing cavity, fishing mechanism is installed in stripping groove, fishing mechanism is used to fish out current collector floating in fishing cavity.The pole piece separating device provided by the application can ensure that current collector and battery powder are completely separated, reduce battery powder loss, improve battery powder recovery rate, and can realize the rapid discharge of current collector, improve separation efficiency.

Description

Technical Field

[0001] This invention relates to the field of lithium battery recycling technology, and more specifically, to an electrode separation device and a lithium battery recycling line. Background Technology

[0002] Currently, with the explosive growth in sales of new energy vehicles, the volume of retired batteries is about to enter a period of rapid increase. The current method of battery recycling generally involves first dismantling the battery by crushing it, breaking down the positive and negative electrodes, separator, and casing into small pieces or particles mixed together. This is then separated to separate the electrode fragments. Next, a reaction solution is used to soak and decompose the electrode fragments, achieving the separation of the current collector and battery powder. However, during the soaking and decomposition process, if there are many electrode fragments or the battery powder has high adhesion strength, incomplete separation of the current collector and battery powder can easily occur, leading to battery powder loss and a reduced battery powder recovery rate. Furthermore, after separation, both the battery powder and the current collector remain mixed in the reaction solution, requiring subsequent physical separation to separate them, a cumbersome process with low efficiency.

[0003] In view of this, designing and manufacturing an electrode separation device and a lithium battery recycling line with high recycling rate and high separation efficiency is particularly important in lithium battery recycling. Summary of the Invention

[0004] The purpose of this invention is to provide an electrode separation device that can ensure complete separation of current collector and battery powder, reduce battery powder loss, improve battery powder recovery rate, and enable rapid discharge of current collector to improve separation efficiency.

[0005] Another objective of this invention is to provide a lithium battery recycling line that can ensure complete separation of the current collector and battery powder, reduce battery powder loss, improve battery powder recovery rate, and enable rapid discharge of the current collector to improve separation efficiency.

[0006] The present invention is achieved by the following technical solution.

[0007] An electrode separation device includes a stripping tank, a filter screen, a vibrator, a switching mechanism, a spraying mechanism, and a retrieval mechanism. The stripping tank is used to hold stripping liquid. The filter screen is disposed in the stripping tank to divide the stripping tank into a separation cavity and a retrieval cavity. The separation cavity is used to feed electrode fragments. The spraying mechanism is installed in the stripping tank and is used to spray stripping liquid so that the stripping liquid carries the electrode fragments from the separation cavity to the retrieval cavity. The filter screen is used to block the electrode fragments. The vibrator is connected to the filter screen and is used to drive the filter screen to vibrate, thereby accelerating the separation of the electrode fragments into current collectors and battery powder. The switching mechanism is installed in the stripping tank and connected to the filter screen. The switching mechanism is used to drive the filter screen to move to connect the separation cavity and the retrieval cavity, so that the current collectors can enter the retrieval cavity under the drive of the stripping liquid. The vibrator is also used to drive the filter screen to vibrate, so as to shake the current collectors adhering to the filter screen into the retrieval cavity. The retrieval mechanism is installed in the stripping tank and is used to retrieve the current collectors floating in the retrieval cavity.

[0008] Optionally, the switching mechanism includes a first driving member and a rotating shaft. The rotating shaft is rotatably mounted in the stripping groove and is connected to the first driving member in a transmission manner. The filter screen is connected to the rotating shaft. The first driving member is used to drive the filter screen to rotate through the rotating shaft to separate or connect the separation cavity and the retrieval cavity.

[0009] Optionally, the filter screen includes a filter screen body and a sleeve. The filter screen body is connected to the circumferential surface of the sleeve and extends radially along the sleeve. The sleeve is fitted outside the rotating shaft and is drivenly connected to the rotating shaft. The vibrator is connected to the sleeve.

[0010] Optionally, a limiting groove is formed on the circumferential surface of the sleeve, and a limiting post is provided on the circumferential surface of the rotating shaft. The limiting post is set in the limiting groove, the cross-sectional area of ​​the limiting post is smaller than the area of ​​the limiting groove, and the inner diameter of the sleeve is larger than the diameter of the rotating shaft.

[0011] Optionally, there are multiple limiting grooves and multiple limiting posts. The multiple limiting posts are divided into multiple groups. The multiple groups of limiting posts are spaced apart along the axial direction of the rotating shaft. In each group, multiple limiting posts are spaced apart along the circumferential direction of the rotating shaft. Each limiting post is set in a limiting groove.

[0012] Optionally, the electrode separation device further includes a conveyor belt, and the retrieval mechanism includes a drive assembly, a connecting ring, and a retrieval net. The drive assembly is installed in the stripping trough and connected to the connecting ring. The conveyor belt passes through the connecting ring, and the retrieval net is connected to the connecting ring. The retrieval net is used to extend into the retrieval cavity to retrieve the current collector. The retrieval net is also used to send the current collector to the conveyor belt, and the conveyor belt is used to drive the current collector to discharge.

[0013] Optionally, the net includes a connecting part and a scooping part. One end of the connecting part is connected to a connecting ring, and the other end is hinged to the scooping part. The scooping part is used to rotate to a first limit position relative to the unfolded connecting part under the action of gravity and the resistance of the stripping fluid, so as to scoop up the collecting fluid. The scooping part is also used to rotate to a second limit position relative to the folded connecting part under the action of gravity, so as to push the collecting fluid to the conveyor belt.

[0014] Optionally, the net also includes a baffle, one end of which is connected to the connecting part, and the other end is used to abut against the scooping part when the scooping part rotates to the second limit position, so as to shake off the collector adhering to the scooping part onto the conveyor belt.

[0015] Optionally, the electrode separation device further includes a circulating filtration mechanism, which includes a water pump and a filter. One end of the water pump is connected to the retrieval cavity, and the other end is connected to the spraying mechanism through the filter. The water pump is used to extract the mixed solution of battery powder and stripping liquid in the retrieval cavity, the filter is used to filter out the battery powder in the mixed solution, and the spraying mechanism is used to spray the filtered stripping liquid into the stripping tank.

[0016] A lithium battery recycling line includes the aforementioned electrode separation device. This device comprises a stripping tank, a filter screen, a vibrator, a switching mechanism, a liquid spraying mechanism, and a retrieval mechanism. The stripping tank holds stripping liquid, and the filter screen is disposed within the stripping tank to divide it into a separation cavity and a retrieval cavity. The separation cavity is used to feed electrode fragments. The liquid spraying mechanism is installed within the stripping tank and sprays out stripping liquid to carry the electrode fragments from the separation cavity to the retrieval cavity. The filter screen is used to block the electrode fragments. The vibrator is connected to the filter screen and is used to drive the filter screen to vibrate, thereby accelerating the separation of electrode fragments into current collectors and battery powder. The switching mechanism is installed in the stripping tank and connected to the filter screen. The switching mechanism is used to drive the filter screen to move to connect the separation cavity and the retrieval cavity, so that the current collector can enter the retrieval cavity under the drive of the stripping liquid. The vibrator is also used to drive the filter screen to vibrate, so as to shake off the current collectors adhering to the filter screen into the retrieval cavity. The retrieval mechanism is installed in the stripping tank and is used to retrieve the current collectors floating in the retrieval cavity.

[0017] The electrode separation device and lithium battery recycling line provided by this invention have the following beneficial effects: The electrode separation device provided by this invention includes a stripping tank for holding stripping liquid, a filter screen disposed within the stripping tank to divide the tank into a separation cavity and a retrieval cavity. The separation cavity is used to feed electrode fragments. A spraying mechanism is installed within the stripping tank to spray stripping liquid, causing the stripping liquid to carry the electrode fragments from the separation cavity to the retrieval cavity. The filter screen is used to block the electrode fragments. A vibrator is connected to the filter screen and is used to drive the filter screen to vibrate, thereby accelerating the separation of the electrode fragments into current collectors and battery powder. A switching mechanism is installed in the stripping tank and connected to the filter screen. The switching mechanism is used to drive the filter screen to move, connecting the separation cavity and the retrieval cavity, so that the current collector can enter the retrieval cavity under the influence of the stripping liquid. The vibrator is also used to drive the filter screen to vibrate, shaking off the current collectors adhering to the filter screen into the retrieval cavity. A retrieval mechanism is installed in the stripping tank and is used to retrieve the current collectors floating in the retrieval cavity. Compared with the prior art, the electrode separation device provided by the present invention can ensure complete separation of current collector and battery powder by adopting a vibrator and switching mechanism connected to the filter screen and a retrieval mechanism installed in the stripping tank, thereby reducing battery powder loss, improving battery powder recovery rate, and enabling rapid discharge of current collector, thus improving separation efficiency.

[0018] The lithium battery recycling line provided by this invention includes an electrode separation device, which can ensure complete separation of current collector and battery powder, reduce battery powder loss, improve battery powder recovery rate, and enable rapid discharge of current collector, thereby improving separation efficiency. Attached Figure Description

[0019] To more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of the present invention and should not be regarded as a limitation on the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.

[0020] Figure 1 This is a schematic diagram of the electrode separation device provided in an embodiment of the present invention; Figure 2 This is a schematic diagram of the connection between the switching mechanism and the filter screen in the electrode separation device provided in an embodiment of the present invention; Figure 3 This is a cross-sectional view of the connection between the switching mechanism and the filter screen in the electrode separation device provided in an embodiment of the present invention; Figure 4 This is a schematic diagram of the structure of the electrode separation device provided in the embodiment of the present invention, showing the cooperation between the retrieval mechanism and the conveyor belt; Figure 5 This is a schematic diagram of the retrieval mechanism in the electrode separation device provided in an embodiment of the present invention; Figure 6 This is a schematic diagram of the connection between the liquid spraying mechanism and the stripping tank in the electrode separation device provided in an embodiment of the present invention; Figure 7 This is a schematic diagram of the circulating filtration mechanism in the electrode separation device provided in an embodiment of the present invention.

[0021] Icons: 100-Electrode separation device; 110-Stripping groove; 111-Separation cavity; 112-Retrieving cavity; 120-Filter screen; 121-Filter screen body; 122-Sleeve; 123-Limiting groove; 130-Vibrator; 140-Switching mechanism; 141-First driving component; 142-Rotating shaft; 143-Limiting post; 150-Spraying mechanism; 151-First nozzle group; 152-Second nozzle group; 153-Third nozzle group; 160-Retrieving... 161-Retrieving mechanism; 1611-Drive assembly; 1612-Second driving component; 1613-Chain drive unit; 1614-Second support wheel; 162-Connecting ring; 163-Retrieving net; 1631-Connecting part; 1632-Retrieving part; 1633-Block; 1634-Straight section; 1635-Arc-shaped section; 170-Conveyor belt; 171-Outer cover; 180-Circulating filtration mechanism; 181-Water pump; 182-Filter. Detailed Implementation

[0022] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. The components of the embodiments of the present invention described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.

[0023] Therefore, the following detailed description of the embodiments of the invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely to illustrate selected embodiments of the invention. All other embodiments obtained by those skilled in the art based on the embodiments of the invention without inventive effort are within the scope of protection of the invention.

[0024] It should be noted that similar labels and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.

[0025] In the description of this invention, it should be noted that the terms "inner," "outer," "upper," "lower," "horizontal," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship commonly used when the product of the invention is in use. They are only for the convenience of describing the invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of the invention. In addition, the terms "first," "second," "third," etc., are only used to distinguish descriptions and should not be construed as indicating or implying relative importance.

[0026] In the description of this invention, it should also be noted that, unless otherwise explicitly specified and limited, the terms "set," "connected," "installed," and "connected" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0027] The following detailed description of some embodiments of the present invention is provided in conjunction with the accompanying drawings. Unless otherwise specified, features in the following embodiments can be combined with each other.

[0028] Please refer to Figure 1 This invention provides a lithium battery recycling line (not shown) for recycling lithium batteries. It ensures complete separation of the current collector and battery powder, reduces battery powder loss, improves battery powder recovery rate, and enables rapid discharge of the current collector, thus improving separation efficiency.

[0029] The lithium battery recycling equipment includes a crushing device (not shown), a sorting device (not shown), and an electrode separation device 100. The crushing device, sorting device, and electrode separation device 100 are arranged sequentially. The crushing device crushes the lithium battery to break down the electrodes, separators, and casing into small pieces or particles mixed together. The sorting device separates the electrode fragments. The electrode separation device 100 peels and decomposes the electrode fragments to separate them into current collectors and battery powder.

[0030] The electrode separation device 100 includes a stripping tank 110, a filter screen 120, a vibrator 130, a switching mechanism 140, a liquid spraying mechanism 150, and a retrieval mechanism 160. The stripping tank 110 holds the stripping liquid to facilitate a chemical reaction between the stripping liquid and the electrode fragments, thereby separating the electrode fragments into battery powder and current collector. The filter screen 120 is disposed within the stripping tank 110 to divide the stripping tank 110 into a separation cavity 111 and a retrieval cavity 112. The separation cavity 111 is used to feed the electrode fragments. The area of ​​the filter holes on the filter screen 120 is smaller than the area of ​​the current collector, allowing the stripping liquid to flow between the separation cavity 111 and the retrieval cavity 112 through the filter holes, while the current collector in the separation cavity 111 cannot pass through the filter screen 120 to enter the retrieval cavity 112. A spraying mechanism 150 is installed inside the stripping tank 110. The spraying mechanism 150 sprays stripping liquid, causing the stripping liquid to carry electrode fragments from the separation cavity 111 to the retrieval cavity 112. During this process, a filter screen 120 is used to block the electrode fragments, ensuring they remain in contact with the filter screen 120. A vibrator 130 is connected to the filter screen 120 and drives the filter screen 120 to vibrate, thereby causing the electrode fragments to vibrate. This accelerates the separation of the electrode fragments into current collectors and battery powder, improving the separation efficiency of the current collectors and battery powder, and ensuring complete separation of the current collectors and battery powder. A switching mechanism 140 is installed in the stripping tank 110 and connected to the filter screen 120. The switching mechanism 140 drives the filter screen 120 to open after the current collector and battery powder are completely separated, connecting the separation cavity 111 and the retrieval cavity 112, allowing the current collector to enter the retrieval cavity 112 under the influence of the stripping liquid. The vibrator 130 is also used to drive the filter screen 120 to vibrate when the switching mechanism 140 is opened, so as to shake off the current collector adhering to the filter screen 120 into the retrieval cavity 112, facilitating subsequent discharge of the current collector. The retrieval mechanism 160 is installed in the stripping tank 110, and the retrieval mechanism 160 is used to retrieve the current collector floating in the retrieval cavity 112 to achieve rapid discharge of the current collector. In this way, the current collector and battery powder can be completely separated, reducing battery powder loss, improving battery powder recovery rate, and achieving rapid discharge of the current collector, thereby improving separation efficiency.

[0031] It should be noted that the electrode fragments are separated to form current collectors and battery powder. The current collector is in sheet form, and its area is larger than that of the filter pores. The current collector cannot pass through the filter screen 120 and enter the retrieval cavity 112. Furthermore, the density of the current collector is less than that of the stripping fluid, so it will float upwards in the stripping fluid. The battery powder is in dust form, and its density is slightly greater than that of the stripping fluid. It will either be suspended in the stripping fluid or settle to the bottom of the stripping fluid.

[0032] Please refer to the reference. Figure 2 and Figure 3The switching mechanism 140 includes a first driving member 141 and a rotating shaft 142. The rotating shaft 142 is rotatably mounted on the peeling groove 110 and is drivenly connected to the first driving member 141. The rotating shaft 142 can rotate relative to the peeling groove 110, and the peeling groove 110 can limit the rotation of the rotating shaft 142. The filter screen 120 is connected to the rotating shaft 142. The first driving member 141 is used to drive the filter screen 120 to rotate via the rotating shaft 142 to separate or connect the separation cavity 111 and the retrieval cavity 112. Specifically, the stripping tank 110 is placed horizontally, and the rotating shaft 142 is located at the top of the stripping tank 110. When the first driving member 141 drives the filter screen 120 to rotate to a vertical plane through the rotating shaft 142, the filter screen 120 separates the separation cavity 111 and the retrieval cavity 112. At this time, the current collector in the separation cavity 111 cannot pass through the filter screen 120 to enter the retrieval cavity 112. When the first driving member 141 drives the filter screen 120 to rotate to a horizontal plane or close to a horizontal plane through the rotating shaft 142, the filter screen 120 is separated from the stripping liquid in the stripping tank 110 to connect the separation cavity 111 and the retrieval cavity 112. At this time, the current collector in the separation cavity 111 can enter the retrieval cavity 112 with the flow of the stripping liquid. At this time, the filter screen 120 vibrates under the action of the vibrator 130 to shake off the current collector adhering to the filter screen 120 into the retrieval cavity 112.

[0033] Furthermore, the first driving component 141 drives the rotating shaft 142 and the filter screen 120 to rotate in the direction from the separation cavity 111 to the retrieval cavity 112, so as to prevent the filter screen 120 from retrieval the current collector in the separation cavity 111 during the rotation opening process, and to ensure that the current collector in the separation cavity 111 can completely enter the retrieval cavity 112 under the action of the stripping liquid.

[0034] In this embodiment, the switching mechanism 140 separates or connects the separation cavity 111 and the retrieval cavity 112 by rotating the filter screen 120. However, it is not limited to this. In other embodiments, the switching mechanism 140 may also separate or connect the separation cavity 111 and the retrieval cavity 112 by raising or lowering the filter screen 120. The specific method by which the switching mechanism 140 moves the filter screen 120 is not limited.

[0035] The filter screen 120 includes a filter screen body 121 and a sleeve 122. The filter screen body 121 is connected to the circumferential surface of the sleeve 122 and extends radially along the sleeve 122. The sleeve 122 is sleeved on the outside of the rotating shaft 142 and is connected to the rotating shaft 142 in a transmission manner. The rotating shaft 142 can drive the sleeve 122 to rotate under the action of the first driving member 141. The vibrator 130 is connected to the sleeve 122, and the vibrator 130 can drive the filter screen body 121 to vibrate relative to the rotating shaft 142 through the sleeve 122.

[0036] Furthermore, a limiting groove 123 is formed on the circumferential surface of the sleeve 122, and a limiting post 143 is extended from the circumferential surface of the rotating shaft 142. The limiting post 143 is disposed within the limiting groove 123, and the rotating shaft 142 can drive the sleeve 122 to rotate through the cooperation of the limiting post 143 and the limiting groove 123. Specifically, the cross-sectional area of ​​the limiting post 143 is smaller than the area of ​​the limiting groove 123, and the inner diameter of the sleeve 122 is larger than the diameter of the rotating shaft 142. That is, the relative position of the sleeve 122 and the rotating shaft 142 is not completely fixed, but has a certain amount of movement margin, so that the vibrator 130 can drive the filter body 121 to vibrate through the sleeve 122 without affecting the rotating shaft 142.

[0037] In this embodiment, there are multiple limiting grooves 123 and multiple limiting posts 143. The multiple limiting posts 143 are divided into multiple groups. The multiple groups of limiting posts 143 are spaced apart along the axial direction of the rotating shaft 142. In each group, the multiple limiting posts 143 are spaced apart along the circumferential direction of the rotating shaft 142. Each limiting post 143 is set in a limiting groove 123. The multiple limiting grooves 123 and multiple limiting posts 143 work together to ensure the reliability of the transmission connection between the rotating shaft 142 and the sleeve 122 and to prevent the sleeve 122 from disengaging from the rotating shaft 142.

[0038] During the separation of electrode fragments, a batch of electrode fragments is first placed into the stripping fluid in the separation cavity 111, so that it flows towards the retrieval cavity 112 under the action of the spraying mechanism 150. When the electrode fragments move to the position of the filter screen 120, the filter screen 120 blocks the electrode fragments. Then, the vibrator 130 is activated to drive the filter screen body 121 to vibrate through the sleeve 122, thereby causing the electrode fragments to vibrate and accelerating the separation of the electrode fragments into current collectors and battery powder. After the current collectors and battery powder are completely separated, the first driving member 141 drives the filter screen body 121 to leave the stripping fluid through the cooperation of the rotating shaft 142 and the sleeve 122, so as to connect the separation cavity 111. 1. The current collector in the separation cavity 111 can enter the retrieval cavity 112 with the flow of the stripping liquid. Then, the vibrator 130 is started again to drive the filter body 121 to vibrate through the sleeve 122, thereby shaking off the current collector adhering to the filter body 121 into the retrieval cavity 112. After this batch of current collectors has completely flowed into the retrieval cavity 112, the first drive member 141 drives the filter body 121 to reset through the cooperation of the rotating shaft 142 and the sleeve 122, so as to separate the separation cavity 111 and the retrieval cavity 112, waiting for the next batch of electrode fragments to be fed in. This cycle is repeated to achieve continuous feeding and separation of electrode fragments with high separation efficiency.

[0039] Please refer to the reference. Figure 4 and Figure 5Optionally, the electrode separation device 100 further includes a conveyor belt 170. A retrieval mechanism 160 is used to retrieve the current collector floating in the retrieval cavity 112 onto the conveyor belt 170. The conveyor belt 170 drives the current collector to discharge, thus achieving the discharge function of the current collector. Further, an outer cover 171 is provided above the conveyor belt 170. The current collector retrieved by the retrieval mechanism 160 falls onto the conveyor belt 170 through the outer cover 171. The outer cover 171 is used to limit and guide the current collector to prevent it from falling outside the conveyor belt 170.

[0040] The retrieval mechanism 160 includes a drive assembly 161, a connecting ring 162, and a retrieval net 163. The drive assembly 161 is mounted on the stripping tank 110 and connected to the connecting ring 162, and is used to drive the connecting ring 162 to rotate. The retrieval net 163 is connected to the connecting ring 162 and can move under the drive of the connecting ring 162. The retrieval net 163 is used to extend into the strainer to retrieve the collected fluid, and is also used to send the collected fluid to the conveyor belt 170. When the drive assembly 161 drives the retrieval net 163 to a first preset position via the connecting ring 162, the retrieval net 163 extends into the stripping liquid. Subsequently, the retrieval net 163 moves under the action of the drive assembly 161 and retrieves the collected fluid. When the retrieval net 163 moves to a second preset position, the retrieval net 163 carries the collected fluid away from the stripping liquid. Afterward, the retrieval net 163 sends the collected fluid to the conveyor belt 170 under the action of the drive assembly 161.

[0041] In this embodiment, the scooping net 163 extends radially along the connecting ring 162 to improve the reliability of scooping the collected fluid, reduce the possibility of the collected fluid falling off the scooping net 163, and facilitate production and processing.

[0042] The scooping net 163 includes a connecting part 1631 and a scooping part 1632. One end of the connecting part 1631 is fixedly connected to a connecting ring 162, and the other end is hinged to the scooping part 1632. The connecting ring 162 can drive the scooping part 1632 to move through the connecting part 1631 during rotation. Specifically, the connecting part 1631 and the scooping part 1632 are connected by a one-way hinge. The scooping part 1632 can rotate at an angle less than or equal to 180 degrees relative to the connecting part 1631. The scooping part 1632 is used to rotate to a first extreme position unfolded relative to the connecting part 1631 under the action of gravity and the resistance of the stripping fluid, so as to scoop up the collected fluid. The scooping part 1632 is also used to rotate to a second extreme position folded relative to the connecting part 1631 under the action of gravity, so as to push the collected fluid to the conveyor belt 170.

[0043] Optionally, the scoop net 163 also includes a stop bar 1633. One end of the stop bar 1633 is connected to the connecting part 1631, and the other end is used to abut against the scooping part 1632 when the scooping part 1632 rotates to the second limit position, so as to shake off the current collector adhering to the scooping part 1632 onto the conveyor belt 170. Specifically, when the scoop net 163 rotates to the highest position with the connecting ring 162, the scooping part 1632 rotates downward under the action of gravity until it abuts against the stop bar 1633 and reaches the second limit position folded relative to the connecting part 1631. During this process, the scooping part 1632 collides with the stop bar 1633, causing the current collector adhering to the scooping part 1632 and the connecting part 1631 to fall onto the conveyor belt 170 under the action of inertia and vibration.

[0044] The retrieval section 1632 includes a straight section 1634 and an arc-shaped section 1635 connected to each other. The straight section 1634 is hinged to the connecting section 1631, and the curvature direction of the arc-shaped section 1635 is the same as the direction in which the retrieval section 1632 rotates relative to the folding direction of the connecting section 1631, and the same as the rotation direction of the connecting ring 162, so as to improve retrieval efficiency and prevent the current collector from falling off after retrieval. Specifically, the retrieval net 163 moves in the stripping liquid from the retrieval cavity 112 to the separation cavity 111, so that the retrieval net 163 can retrieve the current collector floating in the stripping liquid.

[0045] Preferably, there are multiple scooping nets 163, which are arranged in a circular array on the connecting ring 162 to further improve scooping efficiency. In this embodiment, there are four scooping nets 163, but it is not limited to this. In other embodiments, there may be three or five scooping nets 163, and the number of scooping nets 163 is not specifically limited.

[0046] In this embodiment, there are two connecting rings 162, which are coaxial and arranged opposite to each other. The net 163 is connected between the two connecting rings 162. The two connecting rings 162 work together to enhance the fixing function of the net 163, prevent the net 163 from being displaced or deformed relative to the connecting rings 162, and ensure the reliability of the connecting rings 162 in driving the net 163 to move.

[0047] The drive assembly 161 includes a second drive member 1611, a chain drive unit 1612, a first support wheel 1613, and a second support wheel 1614. The second drive member 1611 is mounted on the stripping groove 110 and is connected to the first support wheel 1613 via the chain drive unit 1612. The second drive member 1611 drives the first support wheel 1613 to rotate via the chain drive unit 1612. Both the first support wheel 1613 and the second support wheel 1614 are rotatably mounted on the stripping groove 110. The first support wheel 1613, the second support wheel 1614, and the connecting ring 162 are arranged axially parallel. The connecting ring 162 is mounted on the first support wheel 1613 and the second support wheel 1614 and rotates in cooperation with both the first support wheel 1613 and the second support wheel 1614. Specifically, during the process of the second driving component 1611 driving the first support wheel 1613 to rotate, the first support wheel 1613 drives the connecting ring 162 to rotate, and the connecting ring 162 drives the second support wheel 1614 to rotate. During this process, the first support wheel 1613 and the second support wheel 1614 work together to achieve the load-bearing function of the connecting ring 162 and ensure the stability of the rotation of the connecting ring 162.

[0048] In this embodiment, there are two first support wheels 1613 and two second support wheels 1614. The two first support wheels 1613 are arranged opposite to each other on both sides of the stripping groove 110, and the two second support wheels 1614 are arranged opposite to each other on both sides of the stripping groove 110. Each first support wheel 1613 and each second support wheel 1614 are rotatably engaged with a connecting ring 162. The second driving member 1611 can drive the two first support wheels 1613 to rotate simultaneously through the chain drive unit 1612, so that the two connecting rings 162 rotate synchronously, thereby ensuring the reliability of the movement of the net 163.

[0049] It should be noted that the conveyor belt 170 passes through the connecting ring 162 and is simultaneously located within two connecting rings 162. When the connecting ring 162 drives the scoop net 163 to move above the conveyor belt 170, the collector fluid located in the scoop net 163 falls onto the conveyor belt 170 under the action of gravity, thereby realizing the discharge function of the collector fluid.

[0050] During the retrieval of the current collector, the drive assembly 161 is first activated to move the retrieval net 163 via the connecting ring 162. Before the retrieval net 163 enters the stripping liquid in the retrieval cavity 112, the retrieval part 1632 rotates continuously relative to the connecting part 1631 under the action of gravity, and always remains in the vertical direction. When the retrieval net 163 moves to the first preset position, the retrieval part 1632 comes into contact with the stripping liquid. Subsequently, the retrieval part 1632 rotates under the resistance of the stripping liquid and the action of gravity to... Relative to the first extreme position of the connecting part 1631, the straight section 1634 of the retrieval part 1632 is on the same plane as the connecting part 1631, and the retrieval part 1632 is fully extended; during the process of the retrieval net 163 moving from the first preset position to the second preset position, the retrieval part 1632 remains fully extended and retrieves the current collector floating in the stripping fluid; when the retrieval net 163 moves to the second preset position, the retrieval net 163 pulls the current collector away from the stripping fluid; subsequently, the retrieval net 1632... 63 continues to drive the current collector movement. During this process, the scoop net 163 is located diagonally above the outer cover 171. Part of the current collector inside the scoop net 163 will slide downwards under the action of gravity and fall through the outer cover 171 onto the conveyor assembly. When the scoop net 163 moves to the top of the connecting ring 162, the scoop net 163 is directly above the outer cover 171. At this time, the scooping part 1632 will fall under the action of gravity and quickly rotate to the second extreme position folded relative to the connecting part 1631, so as to scoop the net 163. Part of the collected fluid inside the net 163 is pushed down, allowing it to pass through the outer cover 171 and fall onto the conveyor belt 170. In addition, when the retrieval part 1632 rotates rapidly to the second limit position, it will collide with the baffle 1633. Through inertia and vibration, the residual collected fluid adhering to the net 163 is shaken off, allowing it to pass through the outer cover 171 and fall onto the conveyor belt 170, thus completing the retrieval operation of the collected fluid and improving the retrieval efficiency. This cycle is repeated to achieve continuous retrieval and discharge of the collected fluid, resulting in high discharge efficiency.

[0051] Please refer to Figure 6The spraying mechanism 150 includes a first nozzle group 151, a second nozzle group 152 and a third nozzle group 153. The first nozzle assembly 151 is disposed on both sides of the peeling tank 110. The first nozzle assembly 151 is used to spray peeling liquid towards the middle of the peeling tank 110, and the spraying direction is from the separation cavity 111 to the retrieval cavity 112, so as to drive the peeling liquid in the peeling tank 110 from the separation cavity 111 to the retrieval cavity 112. The second nozzle assembly 152 is disposed at the bottom of the peeling tank 110. The second nozzle assembly 152 is used to spray peeling liquid obliquely upward, and the spraying direction is from the separation cavity 111 to the retrieval cavity 112, so as to drive the peeling liquid in the peeling tank 110 from the separation cavity 111 to the retrieval cavity 112, and drive the collector to move upward. The third nozzle assembly 153 is disposed at the bottom of the peeling tank 110 and is located below the retrieval mechanism 160. The third nozzle assembly 153 is used to spray peeling liquid in a vertically upward direction, so as to drive the collector to move upward, so that the retrieval mechanism 160 can retrieve the collector.

[0052] Please refer to Figure 7 Optionally, the electrode separation device 100 further includes a circulating filtration mechanism 180, which includes a water pump 181 and a filter 182. One end of the water pump 181 is connected to the retrieval cavity 112, and the other end is connected to the spraying mechanism 150 through the filter 182. The water pump 181 is used to extract the mixed solution of battery powder and stripping fluid from the retrieval cavity 112, and the filter 182 is used to filter out the battery powder from the mixed solution to achieve the discharge function of battery powder. The spraying mechanism 150 is used to spray the filtered stripping fluid into the stripping tank 110 to achieve the recycling function of the stripping fluid and save costs.

[0053] The electrode separation device 100 provided in this embodiment of the invention includes a stripping tank 110 for holding stripping liquid, a filter screen 120 disposed within the stripping tank 110 to divide the stripping tank 110 into a separation cavity 111 and a retrieval cavity 112. The separation cavity 111 is used to feed electrode fragments. A spraying mechanism 150 is installed within the stripping tank 110 and is used to spray stripping liquid so that the stripping liquid carries the electrode fragments from the separation cavity 111 to the retrieval cavity 112. The filter screen 120 is used to block the electrode fragments. A vibrator 130 is connected to the filter screen 120 and is used to drive the filter screen 120. The system features zero vibration to accelerate the separation of electrode fragments into current collectors and battery powder. A switching mechanism 140 is installed in the stripping tank 110 and connected to the filter screen 120. The switching mechanism 140 is used to drive the filter screen 120 to move and connect the separation cavity 111 and the retrieval cavity 112, so that the current collector can enter the retrieval cavity 112 under the action of the stripping liquid. The vibrator 130 is also used to drive the filter screen 120 to vibrate, so as to shake off the current collectors adhering to the filter screen 120 into the retrieval cavity 112. A retrieval mechanism 160 is installed in the stripping tank 110 and is used to retrieve the current collectors floating in the retrieval cavity 112. Compared with existing technologies, the electrode separation device 100 provided by this invention, due to the use of a vibrator 130 and a switching mechanism 140 connected to the filter screen 120, as well as a retrieval mechanism 160 installed in the stripping tank 110, can ensure complete separation of the current collector and battery powder, reduce battery powder loss, improve battery powder recovery rate, and achieve rapid discharge of the current collector, thus improving separation efficiency. This results in a high degree of automation and high recycling efficiency for lithium battery recycling lines.

[0054] The above are merely preferred embodiments of the present invention and are not intended to limit the present invention. Various modifications and variations can be made to the present invention by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the scope of protection of the present invention.

Claims

1. An electrode tab separation device characterized by, The device includes a stripping tank (110), a filter screen (120), a vibrator (130), a switching mechanism (140), a liquid spraying mechanism (150), and a retrieval mechanism (160). The stripping tank (110) is used to hold stripping liquid. The filter screen (120) is disposed in the stripping tank (110) to divide the stripping tank (110) into a separation cavity (111) and a retrieval cavity (112). The separation cavity (111) is used to feed electrode fragments. The liquid spraying mechanism (150) is installed in the stripping tank (110) and is used to spray stripping liquid so that the stripping liquid carries the electrode fragments from the separation cavity (111) to the retrieval cavity (112). The filter screen (120) is used to block the electrode fragments. The vibrator (130) is connected to the filter screen (120). The vibrator (130) is used to drive the filter screen (120) to vibrate, so as to accelerate the separation of electrode fragments into current collectors and battery powder. The switching mechanism (140) is installed in the stripping groove (110) and connected to the filter screen (120). The switching mechanism (140) is used to drive the filter screen (120) to move to connect the separation cavity (111) and the retrieval cavity (112), so that the current collector can enter the retrieval cavity (112) under the drive of the stripping liquid. The vibrator (130) is also used to drive the filter screen (120) to vibrate, so as to shake the current collectors adhering to the filter screen (120) into the retrieval cavity (112). The retrieval mechanism (160) is installed in the stripping groove (110). The retrieval mechanism (160) is used to retrieve the current collectors floating in the retrieval cavity (112).

2. The pole piece separation device of claim 1, wherein, The switching mechanism (140) includes a first driving member (141) and a rotating shaft (142). The rotating shaft (142) is rotatably mounted on the stripping groove (110) and is connected to the first driving member (141). The filter screen (120) is connected to the rotating shaft (142). The first driving member (141) is used to drive the filter screen (120) to rotate through the rotating shaft (142) to separate or connect the separation cavity (111) and the retrieval cavity (112).

3. The electrode separation device according to claim 2, characterized in that, The filter screen (120) includes a filter screen body (121) and a sleeve (122). The filter screen body (121) is connected to the circumferential surface of the sleeve (122) and extends radially along the sleeve (122). The sleeve (122) is sleeved on the outside of the rotating shaft (142) and is connected to the rotating shaft (142) in a transmission manner. The vibrator (130) is connected to the sleeve (122).

4. The electrode separation device according to claim 3, characterized in that, The sleeve (122) has a limiting groove (123) on its circumferential surface, and the rotating shaft (142) has a limiting post (143) extending from its circumferential surface. The limiting post (143) is located in the limiting groove (123). The cross-sectional area of ​​the limiting post (143) is smaller than the area of ​​the limiting groove (123), and the inner diameter of the sleeve (122) is larger than the diameter of the rotating shaft (142).

5. The electrode separation device according to claim 4, characterized in that, The number of the limiting groove (123) and the limiting post (143) are both multiple. The multiple limiting posts (143) are divided into multiple groups. The multiple groups of limiting posts (143) are arranged at intervals along the axial direction of the rotating shaft (142). In each group, the multiple limiting posts (143) are arranged at intervals along the circumferential direction of the rotating shaft (142). Each limiting post (143) is disposed in one limiting groove (123).

6. The electrode separation device according to claim 1, characterized in that, The electrode separation device further includes a conveyor belt (170), and the retrieval mechanism (160) includes a drive assembly (161), a connecting ring (162), and a retrieval net (163). The drive assembly (161) is installed on the stripping groove (110) and connected to the connecting ring (162). The conveyor belt (170) passes through the connecting ring (162), and the retrieval net (163) is connected to the connecting ring (162). The retrieval net (163) is used to extend into the retrieval cavity (112) to retrieve the current collector. The retrieval net (163) is also used to send the current collector to the conveyor belt (170), and the conveyor belt (170) is used to drive the current collector to discharge.

7. The electrode separation device according to claim 6, characterized in that, The scooping net (163) includes a connecting part (1631) and a scooping part (1632). One end of the connecting part (1631) is connected to the connecting ring (162), and the other end is hinged to the scooping part (1632). The scooping part (1632) is used to rotate to a first extreme position that is unfolded relative to the connecting part (1631) under the action of gravity and the resistance of the stripping liquid, so as to scoop up the collecting fluid. The scooping part (1632) is also used to rotate to a second extreme position that is folded relative to the connecting part (1631) under the action of gravity, so as to push the collecting fluid to the conveyor belt (170).

8. The electrode separation device according to claim 7, characterized in that, The net (163) also includes a stop bar (1633), one end of which is connected to the connecting part (1631), and the other end is used to abut against the scooping part (1632) when the scooping part (1632) rotates to the second limit position, so as to shake off the current collector adhering to the scooping part (1632) onto the conveyor belt (170).

9. The electrode separation device according to claim 1, characterized in that, The electrode separation device further includes a circulating filtration mechanism (180), which includes a water pump (181) and a filter (182). One end of the water pump (181) is connected to the retrieval cavity (112), and the other end is connected to the spraying mechanism (150) through the filter (182). The water pump (181) is used to extract the mixed solution of battery powder and stripping liquid in the retrieval cavity (112). The filter (182) is used to filter out the battery powder in the mixed solution. The spraying mechanism (150) is used to spray the filtered stripping liquid into the stripping tank (110).

10. A lithium battery recycling line, characterized in that, Includes the electrode separation device as described in any one of claims 1-9.

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