Pole piece separating device and lithium battery recycling line

Abstract

The invention discloses a pole piece separation device and a lithium battery recovery line, and relates to the technical field of lithium battery recovery. The pole piece separating device comprises a stripping groove, a filter screen, a vibrator, a switching mechanism, a liquid spraying mechanism and a fishing mechanism. The filter screen is arranged in the stripping groove to divide the stripping groove into a separation cavity and a fishing cavity, the liquid spraying mechanism is installed in the stripping groove, the filter screen is used for blocking pole piece fragments, the vibrator is connected with the filter screen and used for driving the filter screen to vibrate, and the switching mechanism is installed in the stripping groove and connected with the filter screen. The switch mechanism is used for driving the filter screen to move so as to communicate the separation cavity with the fishing cavity, and the fishing mechanism is installed in the stripping groove and used for fishing out the current collector floating in the fishing cavity. The pole piece separation device provided by the invention can ensure complete separation of the current collector and the battery powder, reduce the loss of the battery powder, improve the recovery rate of the battery powder, realize rapid discharge of the current collector and improve the separation efficiency.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of lithium battery recycling, in particular to a pole piece separation device and a lithium battery recycling line. BACKGROUND

[0002] At present, with the explosive growth of new energy vehicle sales, the amount of retired batteries is about to enter a rapid growth period. The current way of recycling batteries is generally to first crush the battery for disassembly, so that the positive pole piece, negative pole piece, diaphragm and shell are all turned into small pieces or small particles mixed together, then the pole piece fragments are separated out, and then the pole piece fragments are soaked and decomposed by using a reaction solution to realize the separation of the current collector and the battery powder. However, in the process of soaking and decomposing the pole piece fragments, if the number of pole piece fragments is large or the adhesion strength of the battery powder is high, the current collector and the battery powder may not be completely separated, resulting in loss of battery powder and reduction of battery powder recovery rate, and the battery powder and the current collector are mixed in the reaction solution after separation, and subsequent physical separation is required to separate the battery powder and the current collector, which is complicated and has low separation efficiency.

[0003] Therefore, it is particularly important to design and manufacture a pole piece separation device and a lithium battery recycling line with high recovery rate and high separation efficiency. SUMMARY

[0004] The present application aims to provide a pole piece separation device that can ensure complete separation of the current collector and the battery powder, reduce loss of the battery powder, improve the battery powder recovery rate, and realize rapid discharge of the current collector to improve the separation efficiency.

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

[0006] The present application is achieved by using the following technical solutions.

[0007] The application discloses a kind of pole piece separating device, including stripping groove, filter screen, vibrator, switch mechanism, liquid injection mechanism and fishing mechanism, stripping groove is used to hold stripping liquid, filter screen is arranged in stripping groove, to separate into separating cavity and fishing cavity with stripping groove, separating cavity is used for pole piece fragment feed, liquid injection mechanism is installed in stripping groove, liquid injection mechanism is used to spray stripping liquid, to make stripping liquid drive pole piece fragment from separating cavity to fishing cavity, filter screen is used to stop pole piece fragment, vibrator is connected with filter screen, vibrator is used to drive filter screen vibration, to accelerate pole piece fragment is separated into current collector and battery powder, switch mechanism is installed in stripping groove, and is connected with filter screen, switch mechanism is used to drive filter screen movement to communicate separating cavity and fishing cavity, so that current collector can be driven by stripping liquid to enter fishing cavity, vibrator is also used to drive filter screen vibration, to shake current collector adhered on filter screen to fishing cavity, fishing mechanism is installed in stripping groove, fishing mechanism is used to fish current collector floating in fishing cavity.

[0008] Optionally, the switch mechanism includes a first driving member and a rotating shaft, the rotating shaft is rotatably installed in the stripping groove and is in transmission connection with the first driving member, the filter screen is connected with the rotating shaft, and the first driving member is used to drive the filter screen to rotate through the rotating shaft to separate or communicate the separating cavity and the fishing cavity.

[0009] Optionally, the filter screen includes a filter screen body and a sleeve, the filter screen body is connected with the circumferential surface of the sleeve and is arranged along the radial direction of the sleeve, the sleeve is sleeved on the outer side of the rotating shaft and is in transmission connection with the rotating shaft, and the vibrator is connected with the sleeve.

[0010] Optionally, the circumferential surface of the sleeve is provided with a limiting groove, the circumferential surface of the rotating shaft is provided with a limiting column, the limiting column is arranged in the limiting groove, the cross-sectional area of the limiting column 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, the number of the limiting groove and the limiting column is multiple, the multiple limiting columns are divided into multiple groups, the multiple groups of limiting columns are arranged along the axial direction of the rotating shaft, the multiple limiting columns in each group are arranged along the circumferential direction of the rotating shaft, and each limiting column is arranged in a limiting groove.

[0012] Optionally, the pole piece separating device further includes a conveying belt, the fishing mechanism includes a driving assembly, a connecting ring and a fishing net, the driving assembly is installed in the stripping groove and is connected with the connecting ring, the conveying belt passes through the connecting ring, and the fishing net is connected to the connecting ring, the fishing net is used to extend into the fishing cavity to fish the current collector, the fishing net is also used to send the current collector to the conveying belt, and the conveying belt is used to drive the current collector to discharge.

[0013] Optionally, the fishing net comprises a connecting portion and a fishing portion, one end of the connecting portion is connected with the connecting ring, the other end is hingedly connected with the fishing portion, the fishing portion is used to rotate to a first limit position unfolded relative to the connecting portion under the action of gravity and stripping liquid resistance, so as to facilitate the fishing of the current collector, and the fishing portion is used to rotate to a second limit position folded relative to the connecting portion under the action of gravity, so as to push the current collector to the conveying belt.

[0014] Optionally, the fishing net further comprises a blocking rod, one end of the blocking rod is connected with the connecting portion, and the other end is used to abut against the fishing portion when the fishing portion rotates to the second limit position, so as to shake off the current collector adhered to the fishing portion to the conveying belt.

[0015] Optionally, the pole piece separation device further comprises a circulating filtering mechanism, the circulating filtering mechanism comprises a water pump and a filter, one end of the water pump is in communication with the fishing cavity, the other end is connected with the liquid spraying mechanism through the filter, the water pump is used to pump out the mixed solution of the battery powder and the stripping liquid in the fishing cavity, the filter is used to filter out the battery powder in the mixed solution, and the liquid spraying mechanism is used to spray the filtered stripping liquid into the stripping groove.

[0016] A lithium battery recycling line comprising the pole piece separation device, the pole piece separation device comprising a stripping groove, a filter screen, a vibrator, a switching mechanism, a liquid spraying mechanism and a fishing mechanism, the stripping groove is used to contain stripping liquid, the filter screen is arranged in the stripping groove to divide the stripping groove into a separation cavity and a fishing cavity, the separation cavity is used for feeding pole piece fragments, the liquid spraying mechanism is installed in the stripping groove, and the liquid spraying mechanism is used to spray stripping liquid to drive the pole piece fragments to flow from the separation cavity to the fishing cavity, the filter screen is used to block the pole piece fragments, the vibrator is connected with the filter screen, and the vibrator is used to drive the filter screen to vibrate to accelerate the separation of the pole piece fragments into current collectors and battery powders, the switching mechanism is installed in the stripping groove and connected with the filter screen, and the switching mechanism is used to drive the filter screen to move to communicate the separation cavity and the fishing cavity, so that the current collectors can enter the fishing cavity under the driving of the stripping liquid, the vibrator is also used to drive the filter screen to vibrate to shake off the current collectors adhered to the filter screen to the fishing cavity, and the fishing mechanism is installed in the stripping groove, and the fishing mechanism is used to fish out the current collectors floating in the fishing cavity.

[0017] The pole piece separation device and the lithium battery recycling line provided by the application have the following beneficial effects: The pole piece separation device provided by the application, the stripping groove is used for containing the stripping liquid, the filter screen is arranged in the stripping groove to separate the stripping groove into a separation cavity and a fishing cavity, the separation cavity is used for feeding the pole piece fragments, the liquid spraying mechanism is installed in the stripping groove, the liquid spraying mechanism is used for spraying the stripping liquid to drive the pole piece fragments to flow from the separation cavity to the fishing cavity, the filter screen is used for blocking the pole piece fragments, the vibrator is connected with the filter screen, and the vibrator is used for driving the filter screen to vibrate to accelerate the separation of the pole piece fragments into the current collector and the battery powder, the switch mechanism is installed in the stripping groove and connected with the filter screen, and the switch mechanism is used for driving the filter screen to move to communicate the separation cavity and the fishing cavity, so that the current collector can enter the fishing cavity under the driving of the stripping liquid, and the vibrator is also used for driving the filter screen to vibrate to shake off the current collector adhered to the filter screen into the fishing cavity. The pole piece separation device provided by the application can guarantee the complete separation of the current collector and the battery powder, reduce the loss of the battery powder, improve the recovery rate of the battery powder, realize the rapid discharge of the current collector, and improve the separation efficiency.

[0018] The lithium battery recycling line provided by the application comprises the pole piece separation device, can guarantee the complete separation of the current collector and the battery powder, reduce the loss of the battery powder, improve the recovery rate of the battery powder, realize the rapid discharge of the current collector, and improve the separation efficiency. BRIEF DESCRIPTION OF DRAWINGS

[0019] In order to more clearly illustrate the technical solutions of the embodiments of the application, the following will briefly introduce the drawings needed to be used in the embodiments. It should be understood that the following drawings only show some of the embodiments of the application, and therefore should not be regarded as a limitation to the scope. For those skilled in the art, other related drawings can also be obtained without creative labor.

[0020] Figure 1 The structure schematic view of the pole piece separation device provided by the embodiment of the application; Figure 2 The structure schematic view of the pole piece separation device provided by the embodiment of the application, the switch mechanism is connected with the filter screen; Figure 3 The sectional view of the pole piece separation device provided by the embodiment of the application, the switch mechanism is connected with the filter screen; Figure 4 The structure schematic view of the pole piece separation device provided by the embodiment of the application, the fishing mechanism cooperates with the conveying belt; Figure 5 The structure schematic view of the pole piece separation device provided by the embodiment of the application, the fishing mechanism cooperates with the conveying belt; Figure 6 A structure schematic diagram of a liquid spraying mechanism connected with a peeling groove in an electrode plate separating device provided by the embodiment of the present application is shown in the figure. Figure 7 A structure schematic diagram of a circulating filtering mechanism in an electrode plate separating device provided by the embodiment of the present application is shown in the figure.

[0021] Figure: 100-electrode plate separating device; 110-peeling groove; 111-separating cavity; 112-fishing cavity; 120-filter screen; 121-filter screen body; 122-sleeve; 123-limiting groove; 130-vibrator; 140-switching mechanism; 141-first driving member; 142-rotating shaft; 143-limiting column; 150-liquid spraying mechanism; 151-first nozzle group; 152-second nozzle group; 153-third nozzle group; 160-fishing mechanism; 161-driving assembly; 1611-second driving member; 1612-chain transmission unit; 1613-first supporting wheel; 1614-second supporting wheel; 162-connection ring; 163-fishing net; 1631-connection part; 1632-fishing part; 1633-stop rod; 1634-straight section; 1635-arc section; 170-conveying belt; 171-outer cover; 180-circulating filtering mechanism; 181-water pump; 182-filter. DETAILED DESCRIPTION

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

[0023] Therefore, the following detailed description of the embodiments of the present application provided in the drawings is not intended to limit the scope of the claimed present application, but only represents selected embodiments of the present application. All other embodiments obtained by those of ordinary skill in the art based on the embodiments in the present application without creative work are within the scope of protection of the present application.

[0024] It should be noted that: similar labels and letters represent similar items in the following drawings, therefore, once an item is defined in one drawing, it does not need to be further defined and explained in the subsequent drawings.

[0025] In the description of the present application, it should be noted that the terms "inner", "outer", "upper", "lower", "horizontal" and the like indicate the orientation or positional relationship shown in the drawings, or the orientation or positional relationship in which the product of the present application is usually placed during use, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the present application. In addition, the terms "first", "second", "third" and the like are only used to distinguish the description and cannot be understood as indicating or implying relative importance.

[0026] In the description of the present application, it should be noted that, unless otherwise specified and limited, the terms "set", "connected", "mounted", "connected" should be understood broadly, for example, it can be fixedly connected, or it can be detachably connected, or integrally connected; it can be mechanically connected, or it can be electrically connected; it can be directly connected, or it can be indirectly connected through an intermediate medium, or it can be connected inside two elements. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0027] Some embodiments of the present application will be described in detail below with reference to the accompanying drawings. The features in the following examples can be combined with each other without conflict.

[0028] Please refer to Figure 1 The lithium battery recycling line (not shown in the figure) provided by the embodiments of the present application is used for recycling lithium batteries. It can ensure complete separation of the current collector and the battery powder, reduce the loss of the battery powder, improve the recovery rate of the battery powder, and realize rapid discharge of the current collector, thereby improving the separation efficiency.

[0029] The lithium battery recycling device comprises a crushing device (not shown in the figure), a sorting device (not shown in the figure) and a pole piece separation device 100. The crushing device, the sorting device and the pole piece separation device 100 are sequentially arranged. The crushing device is used for crushing the lithium battery, so that the pole piece, the diaphragm and the shell and the like are all changed into small pieces or small particles mixed together. The sorting device is used for separating the pole piece fragments therefrom. The pole piece separation device 100 is used for stripping and decomposing the pole piece fragments, so that the pole piece fragments are separated to obtain the current collector and the battery powder.

[0030] The pole piece separation device 100 comprises a stripping groove 110, a filter screen 120, a vibrator 130, a switching mechanism 140, a liquid spraying mechanism 150 and a fishing mechanism 160. The stripping groove 110 is used to hold the stripping liquid, so as to realize the chemical reaction between the stripping liquid and the pole piece fragments, thereby separating the pole piece fragments into the battery powder and the current collector. The filter screen 120 is arranged in the stripping groove 110 to separate the stripping groove 110 into a separation cavity 111 and a fishing cavity 112, the separation cavity 111 is used for pole piece fragment feeding, the area of the filter hole on the filter screen 120 is smaller than the area of the current collector, the stripping liquid can flow between the separation cavity 111 and the fishing cavity 112 through the filter hole, and the current collector in the separation cavity 111 cannot pass through the filter screen 120 to enter the fishing cavity 112. The liquid spraying mechanism 150 is installed in the stripping groove 110, and the liquid spraying mechanism 150 is used to spray the stripping liquid to drive the pole piece fragments to flow from the separation cavity 111 to the fishing cavity 112, and in this process, the filter screen 120 is used to block the pole piece fragments to keep the pole piece fragments in contact with the filter screen 120. The vibrator 130 is connected with the filter screen 120, and the vibrator 130 is used to drive the filter screen 120 to vibrate, thereby driving the pole piece fragments to vibrate, so as to accelerate the separation of the pole piece fragments into the current collector and the battery powder, improve the separation efficiency of the current collector and the battery powder, and ensure the complete separation of the current collector and the battery powder. The switching mechanism 140 is installed in the stripping groove 110 and connected with the filter screen 120, and the switching mechanism 140 is used to drive the filter screen 120 to move to open after the complete separation of the current collector and the battery powder, so as to make the separation cavity 111 and the fishing cavity 112 communicate, thereby enabling the current collector to enter the fishing cavity 112 under the driving 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 adhered to the filter screen 120 to the fishing cavity 112, facilitating the subsequent discharge of the current collector. The fishing mechanism 160 is installed in the stripping groove 110, and the fishing mechanism 160 is used to fish out the current collector floating in the fishing cavity 112, so as to realize the rapid discharge of the current collector. In this way, the complete separation of the current collector and the battery powder can be ensured, the loss of the battery powder is reduced, the recovery rate of the battery powder is improved, and the rapid discharge of the current collector and the separation efficiency are improved.

[0031] It should be noted that the pole piece fragments are separated into the current collector and the battery powder, wherein the current collector is in a sheet shape, the area of the current collector is greater than the area of the filter hole, the current collector cannot pass through the filter screen 120 to enter the fishing cavity 112, and the density of the current collector is less than the density of the stripping liquid, which will float upward in the stripping liquid; the battery powder is in a dust shape, and the density of the battery powder is slightly greater than the density of the stripping liquid, which will be suspended in the stripping liquid or sink to the bottom of the stripping liquid.

[0032] Please refer to Figure 2 and Figure 3The switch mechanism 140 comprises a first driving member 141 and a rotating shaft 142. The rotating shaft 142 is rotatably installed on the stripping groove 110 and is in driving connection with the first driving member 141. The rotating shaft 142 can rotate relative to the stripping groove 110, and the stripping groove 110 can limit the rotating shaft 142. The filter screen 120 is connected with the rotating shaft 142. The first driving member 141 is used to drive the filter screen 120 to rotate through the rotating shaft 142, so as to separate or connect the separation cavity 111 and the catching cavity 112. Specifically, the stripping groove 110 is horizontally placed, and the rotating shaft 142 is arranged at the top of the stripping groove 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 catching cavity 112. At this time, the current collector in the separation cavity 111 cannot pass through the filter screen 120 to enter the catching 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 groove 110, so as to connect the separation cavity 111 and the catching cavity 112. At this time, the current collector in the separation cavity 111 can enter the catching cavity 112 along with the flow of the stripping liquid. At this time, the filter screen 120 is vibrated under the action of the vibrator 130, so as to shake off the current collector adhered to the filter screen 120 to the catching cavity 112.

[0033] Further, the direction in which the first driving member 141 drives the rotating shaft 142 and the filter screen 120 to rotate is from the separation cavity 111 to the catching cavity 112, so as to prevent the filter screen 120 from lifting the current collector in the separation cavity 111 in the process of rotating to open, and to ensure that the current collector in the separation cavity 111 can completely enter the catching cavity 112 under the action of the flow of the stripping liquid.

[0034] In the embodiment, the switch mechanism 140 separates or connects the separation cavity 111 and the catching cavity 112 by driving the filter screen 120 to rotate. However, it is not limited thereto. In other embodiments, the switch mechanism 140 can also separate or connect the separation cavity 111 and the catching cavity 112 by driving the filter screen 120 to ascend and descend. The manner in which the switch mechanism 140 drives the filter screen 120 to move is not specifically limited.

[0035] The filter screen 120 comprises a filter screen body 121 and a sleeve 122. The filter screen body 121 is connected to the peripheral surface of the sleeve 122 and is arranged along the radial direction of the sleeve 122. The sleeve 122 is sleeved on the outside of the rotating shaft 142 and is in driving connection with the rotating shaft 142. 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 with the sleeve 122. The vibrator 130 can drive the filter screen body 121 to vibrate relative to the rotating shaft 142 through the sleeve 122.

[0036] Further, the circumferential surface of the sleeve 122 is provided with a limiting groove 123, the circumferential surface of the rotating shaft 142 is provided with a limiting column 143, the limiting column 143 is arranged in the limiting groove 123, and the rotating shaft 142 can drive the sleeve 122 to rotate through the cooperation of the limiting column 143 and the limiting groove 123. Specifically, the cross-sectional area of the limiting column 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 movement allowance, so that the vibrator 130 can drive the filter screen body 121 to vibrate through the sleeve 122 without affecting the rotating shaft 142.

[0037] In the embodiment, the number of the limiting groove 123 and the limiting column 143 is multiple, the multiple limiting columns 143 are divided into multiple groups, the multiple groups of limiting columns 143 are arranged along the axial direction of the rotating shaft 142, the multiple limiting columns 143 in each group are arranged along the circumferential direction of the rotating shaft 142, each limiting column 143 is arranged in a limiting groove 123, and the multiple limiting grooves 123 and the multiple limiting columns 143 jointly act to ensure the reliability of the transmission connection between the rotating shaft 142 and the sleeve 122, and prevent the sleeve 122 from being separated from the rotating shaft 142.

[0038] In the separation process of the pole piece fragments, a batch of pole piece fragments is first put into the stripping liquid in the separation cavity 111, so that the pole piece fragments flow towards the fishing cavity 112 under the action of the liquid spraying mechanism 150; when the pole piece fragments move to the position of the filter screen 120, the filter screen 120 blocks the pole piece fragments; then the vibrator 130 is started to drive the filter screen body 121 to vibrate through the sleeve 122, so as to drive the pole piece fragments to vibrate and accelerate the separation of the pole piece fragments into the current collector and the battery powder; after the current collector and the battery powder are completely separated, the first driving member 141 drives the filter screen body 121 to move away from the stripping liquid through the cooperation of the rotating shaft 142 and the sleeve 122, so as to communicate the separation cavity 111 and the fishing cavity 112, at this time, the current collector in the separation cavity 111 can flow into the fishing cavity 112 along with the stripping liquid; then the vibrator 130 is started again to drive the filter screen body 121 to vibrate through the sleeve 122, so as to shake off the current collector adhered to the filter screen body 121 to the fishing cavity 112; when the batch of current collectors completely flow to the fishing cavity 112, the first driving member 141 drives the filter screen 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 fishing cavity 112, and wait for the next batch of pole piece fragments to be put in; the cycle is repeated to realize the continuous feeding and separation of the pole piece fragments, and the separation efficiency is high.

[0039] Please refer to Figure 4 and Figure 5Optionally, the pole piece separating device 100 further comprises a conveying belt 170, the fishing mechanism 160 is used to fish the current collector floating in the fishing cavity 112 to the conveying belt 170, the conveying belt 170 is used to drive the current collector to discharge, so as to realize the discharging function of the current collector. Further, an outer cover 171 is arranged above the conveying belt 170, the current collector fished by the fishing mechanism 160 falls on the conveying belt 170 through the outer cover 171, and the outer cover 171 is used to limit and guide the current collector, so as to prevent the current collector from falling to the area outside the conveying belt 170.

[0040] The fishing mechanism 160 comprises a driving assembly 161, a connecting ring 162 and a fishing net 163. The driving assembly 161 is installed on the stripping groove 110 and connected with the connecting ring 162, and is used to drive the connecting ring 162 to rotate. The fishing net 163 is connected with the connecting ring 162 and can move under the driving of the connecting ring 162, and is used to extend into the mesh to fish the current collector and send the current collector to the conveying belt 170. When the driving assembly 161 drives the fishing net 163 to move to a first preset position through the connecting ring 162, the fishing net 163 extends into the stripping liquid, and then the fishing net 163 moves and fishes the current collector under the action of the driving assembly 161, and when the fishing net 163 moves to a second preset position, the fishing net 163 drives the current collector to leave the stripping liquid, and then the fishing net 163 sends the current collector to the conveying belt 170 under the action of the driving assembly 161.

[0041] In the embodiment, the fishing net 163 is arranged along the radial direction of the connecting ring 162, so as to improve the reliability of fishing the current collector, reduce the possibility of the current collector falling off from the fishing net 163, and facilitate production and processing.

[0042] The fishing net 163 comprises a connecting part 1631 and a fishing part 1632. One end of the connecting part 1631 is fixedly connected with the connecting ring 162, and the other end is hingedly connected with the fishing part 1632, and the connecting ring 162 can drive the fishing part 1632 to move through the connecting part 1631 during rotation. Specifically, the connecting part 1631 and the fishing part 1632 are connected through a one-way hinge, the rotation angle of the fishing part 1632 relative to the connecting part 1631 is less than or equal to 180 degrees, the fishing part 1632 is used to rotate to a first limit position unfolded relative to the connecting part 1631 under the action of gravity and stripping liquid resistance, so as to fish the current collector; and the fishing part 1632 is also used to rotate to a second limit position folded relative to the connecting part 1631 under the action of gravity, so as to push the current collector to the conveying 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 driving assembly 161 comprises a second driving member 1611, a chain transmission unit 1612, a first supporting wheel 1613 and a second supporting wheel 1614. The second driving member 1611 is installed on the stripping groove 110 and connected with the first supporting wheel 1613 through the chain transmission unit 1612, and is used to drive the first supporting wheel 1613 to rotate through the chain transmission unit 1612. The first supporting wheel 1613 and the second supporting wheel 1614 are both rotatably installed on the stripping groove 110, and the axial directions of the first supporting wheel 1613, the second supporting wheel 1614 and the connecting ring 162 are parallel. The connecting ring 162 is loaded on the first supporting wheel 1613 and the second supporting wheel 1614 and simultaneously rotates with the first supporting wheel 1613 and the second supporting wheel 1614. Specifically, in the process of driving the first supporting wheel 1613 to rotate by the second driving member 1611, the first supporting wheel 1613 drives the connecting ring 162 to rotate, and the connecting ring 162 drives the second supporting wheel 1614 to rotate. In this process, the first supporting wheel 1613 and the second supporting wheel 1614 jointly act to realize the load-bearing function of the connecting ring 162 and ensure the stability of the rotation of the connecting ring 162.

[0048] In the embodiment, the number of the first supporting wheels 1613 and the second supporting wheels 1614 is both two. The two first supporting wheels 1613 are oppositely arranged on the two sides of the stripping groove 110, and the two second supporting wheels 1614 are oppositely arranged on the two sides of the stripping groove 110. Each first supporting wheel 1613 and a second supporting wheel 1614 are rotatably connected with a connecting ring 162. The second driving member 1611 can drive the two first supporting wheels 1613 to rotate simultaneously through the chain transmission unit 1612, so as to drive the two connecting rings 162 to rotate synchronously, thereby ensuring the reliability of the movement of the fishing net 163.

[0049] It should be noted that the conveying belt 170 is arranged through the connecting ring 162, and the conveying belt 170 is arranged in the two connecting rings 162. When the connecting ring 162 drives the fishing net 163 to move to the upper side of the conveying belt 170, the current collector in the fishing net 163 falls onto the conveying belt 170 under the action of gravity, thereby realizing the discharging function of the current collector.

[0050] In the process of collecting the current collector, the driving assembly 161 is first started to drive the net 163 through the connecting ring 162; before the net 163 enters the stripping liquid in the collection cavity 112, the collection part 1632 continuously rotates relative to the connecting part 1631 under the action of gravity and is always kept in the vertical direction; when the net 163 moves to the first preset position, the collection part 1632 is in contact with the stripping liquid; then the collection part 1632 rotates to the first limit position relative to the connecting part 1631 under the action of the resistance of the stripping liquid and the action of gravity, at this time the flat section 1634 of the collection part 1632 is in the same plane with the connecting part 1631, and the collection part 1632 is fully unfolded; in the process of the net 163 moving from the first preset position to the second preset position, the collection part 1632 keeps the fully unfolded state and collects the current collector floating in the stripping liquid; when the net 163 moves to the second preset position, the net 163 drives the current collector to leave the stripping liquid; then the net 163 continues to drive the current collector to move, in this process, the net 163 is located obliquely above the cover 171, part of the current collector in the net 163 will slide downward under the action of gravity and fall through the cover 171 to the belt conveying assembly; when the net 163 moves to the top of the connecting ring 162, the net 163 is located directly above the cover 171, at this time the collection part 1632 will fall under the action of gravity and quickly rotate to the second limit position relative to the connecting part 1631 to push part of the current collector in the net 163 downward so as to fall through the cover 171 to the belt conveying belt 170, in addition, when the collection part 1632 quickly rotates to the second limit position, it will collide with the stop rod 1633 to shake off the residual current collector adhered to the net 163 through the inertia and vibration effects, so as to fall through the cover 171 to the conveying belt 170, thus completing the collection of the current collector and improving the collection efficiency; the cycle is repeated to realize the continuous collection and discharge of the current collector, and the discharge efficiency is high.

[0051] Please refer to Figure 6The liquid spraying mechanism 150 comprises a first nozzle group 151, a second nozzle group 152 and a third nozzle group 153. The first nozzle group 151 is arranged on both sides of the stripping groove 110, and is used to spray the stripping liquid towards the middle part of the stripping groove 110, and the spraying direction is from the separation cavity 111 to the fishing cavity 112, so as to drive the stripping liquid in the stripping groove 110 to flow from the separation cavity 111 to the fishing cavity 112. The second nozzle group 152 is arranged at the bottom of the stripping groove 110, and is used to spray the stripping liquid obliquely upwards, and the spraying direction is from the separation cavity 111 to the fishing cavity 112, so as to drive the stripping liquid in the stripping groove 110 to flow from the separation cavity 111 to the fishing cavity 112, and drive the flow collector to move upwards. The third nozzle group 153 is arranged at the bottom of the stripping groove 110 and below the fishing mechanism 160, and is used to spray the stripping liquid vertically upwards, so as to drive the flow collector to move upwards, and facilitate the fishing mechanism 160 to fish out the flow collector.

[0052] Please refer to Figure 7 Optionally, the pole piece separation device 100 further comprises a circulating filtering mechanism 180, and the circulating filtering mechanism 180 comprises a water pump 181 and a filter 182. One end of the water pump 181 is in communication with the fishing cavity 112, and the other end is connected with the liquid spraying mechanism 150 through the filter 182. The water pump 181 is used to pump out the mixed solution of the battery powder and the stripping liquid in the fishing cavity 112, the filter 182 is used to filter out the battery powder in the mixed solution, so as to realize the discharging function of the battery powder, and the liquid spraying mechanism 150 is used to spray the filtered stripping liquid into the stripping groove 110, so as to realize the recycling function of the stripping liquid and save cost.

[0053] The pole piece separation device 100 provided by the embodiment of the present application, the stripping groove 110 is used for containing the stripping liquid, the filter screen 120 is arranged in the stripping groove 110, so as to separate the stripping groove 110 to form the separation cavity 111 and the fishing cavity 112, the separation cavity 111 is used for feeding the pole piece fragments, the liquid spraying mechanism 150 is installed in the stripping groove 110, the liquid spraying mechanism 150 is used for spraying the stripping liquid, so that the stripping liquid drives the pole piece fragments to flow from the separation cavity 111 to the fishing cavity 112, the filter screen 120 is used for blocking the pole piece fragments, the vibrator 130 is connected with the filter screen 120, the vibrator 130 is used for driving the filter screen 120 to vibrate, so as to accelerate the separation of the pole piece fragments into the current collector and the battery powder, the switch mechanism 140 is installed in the stripping groove 110 and connected with the filter screen 120, the switch mechanism 140 is used for driving the filter screen 120 to move to communicate the separation cavity 111 and the fishing cavity 112, so that the current collector can enter the fishing cavity 112 under the driving of the stripping liquid, the vibrator 130 is also used for driving the filter screen 120 to vibrate, so as to shake off the current collector adhered to the filter screen 120 to the fishing cavity 112, the fishing mechanism 160 is installed in the stripping groove 110, and the fishing mechanism 160 is used for fishing out the current collector floating in the fishing cavity 112. Compared with the prior art, the pole piece separation device 100 provided by the present application can ensure that the current collector and the battery powder are completely separated, reduce the loss of the battery powder, improve the recovery rate of the battery powder, realize the rapid discharge of the current collector, and improve the separation efficiency. The lithium battery recycling line has high automation degree and high recovery efficiency.

[0054] The above only describes the preferred embodiments of the present application and is not used to limit the present application. For those skilled in the art, the present application can have various modifications and changes. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. An electrode separation device, characterized in that, 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 electrode separation device according to claim 1, characterized in that, 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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