A sorting device for positive and negative electrode sheets of waste lithium ion batteries

Abstract

The application discloses a kind of waste lithium ion battery positive and negative pole piece sorting device, belong to lithium battery recycling technical field, the problem that existing sorting device is separated when being separated to negative pole piece and positive pole piece is blocked normal falling track of negative pole piece, the sorting device includes main support, feed assembly, feeding piece and screening assembly, main support upper surface is equipped with feed assembly, main support upper surface is located at the side of feed assembly and is equipped with feeding piece, main support is equipped with the screening assembly that the lithium battery positive and negative pole piece of feeding piece output is sorted, screening assembly includes feeding belt, detection assembly and jet end, feeding belt is transported to the lithium battery positive and negative pole piece of feeding piece output below detection assembly, detection assembly distinguishes lithium battery positive and negative pole piece, jet end is separated under the condition that not affecting normal falling of negative pole piece, positive pole piece is handled.

Description

Technical Field

[0001] This invention belongs to the field of lithium battery recycling technology, specifically relating to a sorting device for positive and negative electrode sheets of waste lithium-ion batteries. Background Technology

[0002] With the continuous development of lithium battery technology, more and more devices are now using lithium batteries as their driving energy source, leading to a year-on-year increase in the use of lithium batteries. However, the lifespan of lithium batteries is generally only about 5 to 10 years, which results in a large number of scrapped lithium batteries that need to be recycled every year. Currently, the recycling of lithium batteries involves multiple processes, including crushing, screening, and sorting. Sorting involves separating the positive and negative electrodes from the crushed lithium battery waste. By utilizing the different materials used in the positive and negative electrodes, copper sheets (negative electrode sheets) and aluminum sheets (positive electrode sheets) in lithium batteries are separated. This is a commonly used sorting method in the recycling of lithium batteries.

[0003] Chinese invention patent publication number CN118491890A discloses a sorting device for recycling positive and negative electrode sheets of lithium-ion batteries. The device includes an X-ray sorting chamber and a feed inlet. A conveyor belt is installed below the X-ray sorting chamber and the feed inlet. The positive and negative electrode sheets of the lithium batteries enter the surface of the conveyor belt through the feed inlet and are conveyed to the area below the X-ray sorting chamber. The X-ray sorting chamber is used to mark and screen the material below it. An airflow nozzle is installed at the end of the conveyor belt. Under the action of the airflow nozzle, the marked material is blown, thus achieving the sorting of the positive and negative electrode sheets of the lithium batteries. The aforementioned sorting device uses an X-ray sorting chamber to accurately mark the positive and negative electrode plates in lithium batteries, facilitating the subsequent push of materials into the correct receiving chamber by the airflow nozzle. However, certain problems exist in actual use. Specifically, the airflow nozzle is installed on the material's drop trajectory, causing materials to fall directly onto the nozzle, obstructing the gas jet. Furthermore, when the airflow nozzle blows the material, the blown material moves to the side, colliding with materials falling from above, resulting in neither material falling accurately into the corresponding receiving chamber, thus affecting the accuracy of subsequent material sorting. Summary of the Invention

[0004] The purpose of this section is to outline some aspects of embodiments of the present invention and to briefly describe some preferred embodiments. Simplifications or omissions may be made in this section, as well as in the abstract and title of this application, to avoid obscuring the purpose of these documents; however, such simplifications or omissions should not be construed as limiting the scope of the invention.

[0005] To address the problems mentioned in the background section, the present invention adopts the following technical solution.

[0006] A waste lithium-ion battery positive and negative electrode sheet sorting device includes a main support and a feeding component. The feeding component for conveying lithium-ion battery positive and negative electrode sheets is installed at the top of the main support. A screening component is installed inside the main support and below the feeding component. The screening component performs screening processing on the negative and positive electrode sheets in the conveyed lithium-ion battery positive and negative electrode sheets. The screening component is provided with an air jet end to avoid collision between the positive and negative electrode sheets during screening.

[0007] As a preferred embodiment of the present invention, the screening assembly includes a feeding belt, an upper housing, and a light emitter. The feeding belt is mounted on the main support, and the upper housing is mounted on the main support and located on the side of the feeding belt. A detection assembly is mounted on the inner wall of the upper housing. The detection assembly distinguishes the positive and negative electrode sheets of the lithium-ion battery conveyed on the feeding belt. An outer shell is mounted at the bottom of the upper housing, and an air jet is mounted on the side wall of the outer shell. The air jet blows and separates the positive electrode sheet without affecting the normal falling of the negative electrode sheet after screening. A dividing frame is mounted on the inner wall of the outer shell, and a mating component is mounted on the side of the outer shell. The outer shell and the mating component together form a hollow rectangular frame structure.

[0008] As a preferred embodiment of the present invention, the mating component includes a baffle plate. The baffle plate is installed on the side of the outer shell and blocks the opening on the side of the outer shell. The positive electrode sheet slides along the surface of the dividing frame and falls between the dividing frame and the mating component.

[0009] As a preferred embodiment of the present invention, the mating component includes a side baffle, a side baffle and a rotating receiving plate. The side baffle is installed at the side opening of the outer shell, and a rotating groove is opened in the side baffle. The rotating receiving plate is rotatably installed in the rotating groove. The end of the rotating receiving plate is attached to the end of the dividing frame. The rotating receiving plate extends the conveying path length of the dividing frame and separately screens out the positive and negative electrode sheets of lithium-ion batteries that are not accurately marked.

[0010] As a preferred embodiment of the present invention, a negative electrode plate separating cavity is formed between the outer shell and the dividing frame, and a positive electrode plate separating cavity is formed between the dividing frame and the mating component.

[0011] As a preferred embodiment of the present invention, the detection component includes a light emitter and a receiver. The light emitter is installed on the inner wall of the upper housing, and the light emitter emits X-rays that irradiate the positive and negative electrode plates of the lithium-ion battery. The receiver is installed on the inner wall of the upper housing to receive the light refracted by the electrode plates. The positive and negative electrode plates of the lithium-ion battery between the light emitter and the receiver are marked and distinguished according to the different types of light received by the receiver.

[0012] As a preferred embodiment of the present invention, it further includes a feeding assembly, which includes a limiting frame, a feeding port, a vibrating plate, and a reciprocating assembly. The limiting frame is installed on the upper surface of the main support, and the vibrating plate is slidably installed between the limiting frames. The limiting frame is equipped with a feeding port for inputting the positive and negative electrode sheets of lithium-ion batteries to be screened. The bottom end of the vibrating plate is equipped with a reciprocating assembly that drives the vibrating plate to shake up and down so that the surface of the vibrating plate is evenly distributed.

[0013] As a preferred embodiment of the present invention, the reciprocating assembly includes a support base, a motor assembly, and a rotating rod. A support plate is installed at the bottom of the vibrating plate, and support bases are symmetrically installed on the upper surface of the main support. A rotating rod is rotatably installed between the support bases. A motor assembly is installed on the surface of the main support. The output end of the motor assembly is connected to the end of the rotating rod. A cam is installed on the rotating rod. The cam is in contact with the support plate. A spring assembly is installed at the bottom of the vibrating plate, and the other end of the spring assembly is connected to the main support.

[0014] As a preferred embodiment of the present invention, when the cam protrusion is pressed against the support plate, the spring assembly enters a storage state. When the cam is no longer pressing against the support plate, the spring assembly releases its own elastic force to pull the vibration plate back to its original position, and the positive and negative electrode sheets of the lithium-ion battery on the vibration plate are flattened.

[0015] As a preferred embodiment of the present invention, the feeding component includes a receiving conveyor belt, side plates, a blocking frame, and a receiving bin. A receiving conveyor belt for receiving the positive and negative electrode sheets of lithium-ion batteries conveyed by the vibrating plate is installed on the upper surface of the main support. A receiving bin is installed on the main support and at the end of the receiving conveyor belt. The receiving bin conveys the received material to the screening assembly. Side plates are symmetrically installed on the receiving conveyor belt, and blocking frames are installed on the side plates. The bottom end of the blocking frame extends above the surface of the receiving conveyor belt.

[0016] Compared with the prior art, the beneficial effects of the present invention are as follows: This invention utilizes a screening component to stably transport crushed lithium-ion battery positive and negative electrode sheets. The difference in the reflected light wavelengths when the positive and negative electrode sheets are irradiated by X-rays is used to distinguish them. When separating the positive electrode sheet from the negative electrode sheet, an air jet is used to quickly separate the material conveyed by the feeding belt without affecting the normal falling of the negative electrode sheet. The blown positive electrode sheet is pushed laterally and directly enters the positive electrode sheet separation chamber, preventing collisions between the positive and negative electrode sheets that could prevent precise separation. The invention also includes a baffle plate that seals the positive electrode sheet separation chamber, allowing the positive electrode sheet to fall stably onto the lower feeding conveyor belt. Furthermore, the invention includes a side baffle and a rotating receiving plate. The rotating receiving plate has a stable adjustable angle, and its end fits against the end of the dividing frame, allowing for the separate collection of lithium-ion battery positive and negative electrode sheets that were not accurately detected by the detection component, ensuring the overall screening effect of the device.

[0017] In this invention, the feeding components and feeding parts enable precise distribution of the input material, ensuring that the positive and negative electrode sheets of lithium-ion batteries are evenly distributed on the surface of the receiving conveyor belt. This facilitates accurate detection of individual positive and negative electrode sheets by the subsequent detection components. Furthermore, the use of blocking frames pushes the accumulated positive and negative electrode sheets, ensuring the stability of the lithium-ion battery positive and negative electrode sheets during transport and facilitating screening by the subsequent screening components. Attached Figure Description

[0018] Figure 1 This is a perspective view of the overall structure of the present invention.

[0019] Figure 2 This is a plan view of the structure of the sorting device of the present invention.

[0020] Figure 3 This is a perspective view of the feeding assembly structure of the present invention.

[0021] Figure 4 This is a schematic diagram of the reciprocating component in this invention.

[0022] Figure 5 This is a perspective view of the feeding component structure of the present invention.

[0023] Figure 6 This is a perspective view of the structure of the screening component of the present invention.

[0024] Figure 7 This is a perspective view of the internal structure of the outer shell of the present invention.

[0025] Figure 8 This is a perspective view of the mating component structure in Embodiment 1 of the present invention.

[0026] Figure 9 This is a perspective view of the mating component structure in Embodiment 2 of the present invention.

[0027] The correspondence between the labels and component names in the attached figures is as follows: 1. Main support; 2. Feeding assembly; 21. Limiting frame; 22. Feed inlet; 23. Vibrating plate; 24. Reciprocating assembly; 241. Support base; 242. Motor assembly; 243. Rotating rod; 244. Cam; 245. Spring assembly; 3. Feeding component; 31. Receiving conveyor belt; 32. Side plate; 33. Blocking frame; 34. Receiving bin; 4. Screening assembly; 41. Feeding belt; 42. Upper shell; 43. Light emitter; 44. Receiver; 45. Jet nozzle; 46. Outer shell; 47. Dividing frame; 48. Mating component; 481. Blocking plate; 482. Side baffle; 483. Rotating receiving plate; 484. Drive motor; 5. Feeding conveyor belt. Detailed Implementation

[0028] To make the above-mentioned objects, features and advantages of the present invention more apparent and understandable, the specific embodiments of the present invention will be described in detail below with reference to the accompanying drawings.

[0029] Many specific details are set forth in the following description in order to provide a full understanding of the invention. However, the invention may also be practiced in other ways different from those described herein, and those skilled in the art can make similar extensions without departing from the spirit of the invention. Therefore, the invention is not limited to the specific embodiments disclosed below.

[0030] Secondly, the term "one embodiment" or "embodiment" as used herein refers to a specific feature, structure, or characteristic that may be included in at least one implementation of the present invention. The phrase "in one embodiment" appearing in different places throughout this specification does not necessarily refer to the same embodiment, nor is it a single or selective embodiment that mutually excludes other embodiments. The present invention provides the following embodiments. Example

[0031] like Figure 1 and Figure 2The diagram shows the structure of the waste lithium-ion battery positive and negative electrode sheet sorting device in this embodiment. The sorting device in this embodiment can accurately distinguish the positive and negative electrode sheets in the lithium battery and separate the separated battery sheets, allowing the positive and negative electrode sheets to enter the corresponding receiving chambers. The sorting device includes a main support 1, a feeding assembly 2, a feeding component 3, and a screening assembly 4. The feeding assembly 2 is installed on the upper surface of the main support 1. The crushed lithium battery positive and negative electrode sheets are dispersed by the operation of the feeding assembly 2, allowing the lithium battery positive and negative electrode sheets to be evenly dispersed on the surface of the feeding assembly 2, facilitating subsequent processing of the dispersed lithium batteries. The positive and negative electrode sheets of the lithium battery are sorted. A feeding component 3 is installed on the upper surface of the main support 1 on the side of the feeding component 2. The feeding component 3 conveys the dispersed positive and negative electrode sheets of the lithium battery and inputs them into the subsequent components. A screening component 4 is installed on the main support 1 to sort the positive and negative electrode sheets of the lithium battery output from the feeding component 3. The screening component 4 uses the difference in the radiation emitted by the negative electrode sheet and the positive electrode sheet under X-ray irradiation to screen the negative electrode sheet and the positive electrode sheet in the lithium battery. A feeding conveyor belt 5 is installed at the bottom of the main support 1 to receive and convey the material sorted by the screening component 4.

[0032] As attached Figure 3 As shown, this is a schematic diagram of the feeding assembly 2 in this embodiment. The feeding assembly 2 includes a limiting frame 21, a feeding port 22, a vibrating plate 23, and a reciprocating assembly 24. The limiting frame 21 is installed on one side of the upper surface of the main support 1. The vibrating plate 23 is slidably installed inside the limiting frame 21. The vibrating plate 23 slides up and down along the length of the limiting frame 21. The feeding port 22 is installed on the limiting frame 21. The broken lithium battery positive and negative electrode sheets enter the surface of the vibrating plate 23 through the feeding port 22. The reciprocating assembly 24 is installed on the surface of the main support 1 and below the vibrating plate 23. The operation of the reciprocating assembly 24 drives the vibrating plate 23 to shake up and down inside the limiting frame 21. By using the vibration of the vibrating plate 23 itself, the lithium battery positive and negative electrode sheets accumulated on the surface of the vibrating plate 23 are gradually dispersed, allowing the lithium battery positive and negative electrode sheets to enter the subsequent feeding component 3 in a uniformly distributed manner.

[0033] It is worth noting that the vibrating plate 23 is arranged at an angle. By utilizing the slope of the vibrating plate 23 and its own vibration, the positive and negative electrode sheets of the lithium battery on the upper surface of the vibrating plate 23 are gradually moved towards the side of the feeding component 3. The end of the vibrating plate 23 is attached to the upper surface of the feeding component 3, ensuring that the positive and negative electrode sheets of the lithium battery accurately enter the feeding component 3, and assisting the feeding component 3 in stably conveying the dispersed positive and negative electrode sheets of the lithium battery.

[0034] As attached Figure 4As shown, this is a schematic diagram of the reciprocating assembly 24 in this embodiment. The reciprocating assembly 24 includes a support base 241, a motor assembly 242, and a rotating rod 243. A support plate is installed at the bottom of the vibrating plate 23. Support bases 241 are symmetrically installed on the upper surface of the main support 1 and below the vibrating plate 23. A rotating rod 243 is rotatably installed between the support bases 241. A cam 244 is installed on the rotating rod 243. The top of the cam 244 is in contact with the support plate. The motor assembly 242 is installed at the end of the rotating rod 243. The operation of the output end of the motor assembly 242 drives the rotating rod 243 to rotate synchronously. At this time, the cam 244 rotates around the rotating rod 243 as the axis. The protrusion of the cam 244 will be in contact with the bottom of the support plate. At this time, the support plate is pushed and squeezed, driving the vibration. The plate 23 moves towards the side closer to the feed inlet 22, thus raising the position of the vibrating plate 23. A spring assembly 245 is symmetrically installed at the bottom of the vibrating plate 23, with its end connected to the main support 1. When the vibrating plate 23 moves upward, the spring assembly 245 enters a storage state. As the cam 244 continues to rotate, the protrusion of the cam 244 is no longer in contact with the support plate. At this time, the vibrating plate 23 is pulled by the elastic force of the spring assembly 245, causing it to move downward. Through the cyclic rotation of the cam 244 and the cooperation of the spring assembly 245, the overall position of the vibrating plate 23 moves up and down, thereby generating vibration. This causes the lithium battery positive and negative electrode materials that have fallen onto the surface of the vibrating plate 23 to gradually disperse and be conveyed towards the side closer to the feeding component 3.

[0035] As attached Figure 5 As shown, this is a structural schematic diagram of the feeding component 3 in this embodiment. The feeding component 3 includes a receiving conveyor belt 31, side plates 32, and a blocking frame 33. The receiving conveyor belt 31 is installed on the upper surface of the main support 1 at the end of the vibrating plate 23. The operation of the receiving conveyor belt 31 itself drives the positive and negative electrode sheets of the lithium battery discharged from the vibrating plate 23 to continue to be conveyed. Side plates 32 are symmetrically installed on both sides of the receiving conveyor belt 31. The blocking frame 33 is installed on the side plates 32. The bottom of the blocking frame 33 extends towards the side close to the surface of the receiving conveyor belt 31. The blocking frame 33 blocks the receiving conveyor belt 31. The positive and negative electrode sheets of the lithium battery are pushed on the main support 1. When the positive and negative electrode sheets of the lithium battery are still piled up, the blocking frame 33 can push and flatten the piled positive and negative electrode sheets of the lithium battery, so that the positive and negative electrode sheets of the lithium battery can be stably transported without exceeding a certain height. The main support 1 is equipped with a receiving chamber 34 on its upper surface to receive the positive and negative electrode sheets of the lithium battery conveyor belt 31. The receiving chamber 34 inputs the positive and negative electrode sheets of the lithium battery conveyor belt 31 into the subsequent screening component 4, so that the subsequent screening component 4 can screen the positive and negative electrode sheets of the lithium battery.

[0036] It is worth noting that in this embodiment, the bottom end of the receiving chamber 34 extends to the upper surface of the component in the screening assembly 4. By utilizing the height of the receiving chamber 34 itself, the distance that the positive and negative electrode sheets of the lithium battery fall is extended. By utilizing the effect of gravity, the positive and negative electrode sheets of the lithium battery stably enter the subsequent screening assembly 4, which facilitates the subsequent screening assembly 4 to distinguish the positive and negative electrode sheets in the positive and negative electrode sheets of the lithium battery.

[0037] As attached Figure 6 and Figure 7 As shown, this is a schematic diagram of the screening component 4 in this embodiment. The main support 1 includes a feeding belt 41, an upper housing 42, and a light emitter 43. The feeding belt 41 is installed on the main support 1 at the bottom of the receiving chamber 34. The feeding belt 41 conveys the positive and negative lithium battery electrode sheets discharged from the receiving chamber 34. The upper housing 42 is installed on the main support 1 on one side of the feeding belt 41. The light emitter 43 is installed on the inner wall of the upper housing 42. The receiver 44 is installed on the inner wall of the upper housing 42 and on the side of the light emitter 43. The light emitter 43 emits specific light, which shines on the positive and negative lithium battery electrode sheets to be sorted. After refraction, the light is received by the receiver 44. Based on the difference in the light emitted by the negative and positive electrode sheets, the type and material of the positive and negative lithium battery electrode sheets conveyed by the feeding belt 41 between the light emitter 43 and the receiver 44 can be quickly identified. In this embodiment, the light emitter 43 and the receiver 44... The system comprises a detection assembly for the positive and negative electrodes of a lithium battery, which marks the positions of the corresponding positive and negative electrodes. An outer shell 46 is installed at the bottom of the upper shell 42. The positive and negative electrodes of the lithium battery conveyed by the feeding belt 41 fall into the outer shell 46. During the process of the positive and negative electrodes falling inside the outer shell 46, a jet end 45 is installed on the side wall of the outer shell 46. The jet end 45 blows on the corresponding positive and negative electrodes according to the different light emitted by the light emitter 43 and the position marking, thus distinguishing the negative and positive electrodes and allowing them to be transported separately. A dividing frame 47 is installed inside the outer shell 46. The left side of the dividing frame 47 forms a negative electrode separation cavity with the inner wall of the outer shell 46. A mating part 48 is installed on the side of the outer shell 46. The mating part 48 and the dividing frame 47 form a positive electrode separation cavity. The jet end 45 sprays the corresponding type of material into the corresponding cavity.

[0038] It is worth noting that the jet end 45 is installed on the side wall of the outer casing 46 and is not on the trajectory of the falling lithium battery positive and negative electrode sheets. When the lithium battery positive and negative electrode sheets fall from the feeding belt 41 into the outer casing 46, the negative electrode sheet falls directly into the negative electrode sheet separation chamber, while the positive electrode sheet is pushed by the jet end 45 with a straight thrust, allowing the positive electrode sheet to directly enter the positive electrode sheet separation chamber. The collection of the two materials does not interfere with each other, preventing the positive electrode sheet from colliding with other negative electrode sheets when the jet end 45 pushes the positive electrode sheet, which would cause a deviation in the separation of the two materials.

[0039] As attached Figure 8 As shown, it is a structural schematic diagram of the mating component 48 in this embodiment. The mating component 48 includes a baffle plate 481. The baffle plate 481 is installed on the side of the outer shell 46. The baffle plate 481 and the outer shell 46 enclose a hollow frame. The baffle plate 481 blocks the material conveyed by the side wall of the dividing frame 47, so that the material falls stably onto the surface of the lower feeding conveyor belt 5, thereby achieving accurate collection of the material. Example

[0040] As attached Figure 9 As shown, this is a schematic diagram of the structure of the mating component 48 in this embodiment. The difference between this embodiment and Embodiment 1 is that the mating component 48 includes a side baffle 482, a rotating receiving plate 483, and a drive motor 484. The side baffle 482 is installed on the side of the outer shell 46. A rotating groove is opened in the side baffle 482, and the rotating receiving plate 483 is rotatably installed in the rotating groove. The end of the rotating receiving plate 483 is in contact with the side surface of the dividing frame 47, so that the material conveyed on the dividing frame 47 is output along the surface of the rotating receiving plate 483. The drive motor 484 is installed on the side of the side baffle 482. The operation of the drive motor 484 drives the rotating receiving plate 483 to rotate at an overall angle. When the receiver 44 and the light emitter 43 cannot accurately detect the type and material of the positive and negative electrode sheets of the lithium battery below, especially the positive and negative electrode sheets of the lithium battery with a small emitting surface, the drive motor 484 drives the rotating receiving plate 483 to rotate at an angle, directly discharging the material whose type and material have not been clearly analyzed to the side position, so as to facilitate subsequent separate processing.

[0041] The above description, in conjunction with specific embodiments, provides a further detailed explanation of the present invention. It should not be construed that the specific implementation of the present invention is limited to these descriptions. For those skilled in the art, several simple deductions or substitutions can be made without departing from the concept of the present invention, and all such deductions or substitutions should be considered to fall within the scope of protection defined by the claims submitted herein.

Claims

1. A waste lithium-ion battery positive and negative electrode sheet sorting device, comprising a main support (1) and a feeding component (3), wherein the feeding component (3) for conveying lithium-ion battery positive and negative electrode sheets is installed at the top of the main support (1), and a screening component (4) is installed inside the main support (1) and below the feeding component (3), wherein the screening component (4) performs screening processing on the negative electrode sheet and the positive electrode sheet in the conveyed lithium-ion battery positive and negative electrode sheets, characterized in that: The screening assembly (4) is equipped with a jet end (45) to prevent collisions between the positive and negative electrode sheets of the lithium-ion battery during screening. The screening component (4) includes a feeding belt (41), an upper shell (42) and a light emitter (43). The feeding belt (41) is installed on the main support (1). The upper shell (42) is installed on the main support (1) and located on the side of the feeding belt (41). The outer shell (46) is installed at the bottom of the upper shell (42). A dividing frame (47) is installed on the inner wall of the outer shell (46). A mating part (48) is installed on the side of the outer shell (46). The outer shell (46) and the mating part (48) together form a hollow rectangular frame structure. The fitting component (48) includes a side baffle (482), a side baffle (482) and a rotating receiving plate (483). A side baffle (482) is installed at the side opening of the outer shell (46). A rotating groove is provided in the side baffle (482). A rotating receiving plate (483) is rotatably installed in the rotating groove. The end of the rotating receiving plate (483) is attached to the end of the dividing frame (47). The rotating receiving plate (483) extends the conveying path length of the dividing frame (47) and separates the lithium-ion battery positive and negative electrode sheets that are not accurately marked. It also includes a feeding assembly (2), which includes a limiting frame (21), a feeding port (22), a vibrating plate (23), and a reciprocating assembly (24). The limiting frame (21) is installed on the upper surface of the main support (1), and the vibrating plate (23) is slidably installed between the limiting frames (21). The limiting frame (21) is equipped with a feeding port (22) for inputting the positive and negative electrode sheets of lithium-ion batteries to be screened. The bottom end of the vibrating plate (23) is equipped with a reciprocating assembly (24) that drives the vibrating plate (23) to shake up and down so that the surface of the vibrating plate (23) is evenly distributed. The vibrating plate (23) is arranged at an inclination. By utilizing the slope of the vibrating plate (23) itself and the vibration of the vibrating plate (23) itself, the positive and negative electrode sheets of lithium batteries on the upper surface of the vibrating plate (23) gradually move towards the side closer to the feeding component (3), and the end of the vibrating plate (23) is attached to the upper surface of the feeding component (3) to ensure that the positive and negative electrode sheets of lithium batteries accurately enter the feeding component (3). The feeding component (3) includes a receiving conveyor belt (31), a side plate (32), a blocking frame (33), and a receiving bin (34). The upper surface of the main support (1) is equipped with a receiving conveyor belt (31) for receiving the positive and negative electrode sheets of lithium-ion batteries conveyed by the vibrating plate (23). The receiving bin (34) is installed on the main support (1) and located at the end of the receiving conveyor belt (31). The receiving bin (34) conveys the received material to the screening component (4). The side plate (32) is symmetrically installed on the receiving conveyor belt (31). The blocking frame (33) is installed on the side plate (32). The bottom end of the blocking frame (33) extends above the surface of the receiving conveyor belt (31).

2. The waste lithium-ion battery positive and negative electrode sorting device according to claim 1, characterized in that: The inner wall of the upper shell (42) is equipped with a detection component. The detection component distinguishes the positive and negative electrode sheets of the lithium-ion battery conveyed on the feeding belt (41). The side wall of the outer shell (46) is equipped with a jet end (45). The jet end (45) blows and separates the positive electrode sheet without affecting the normal falling of the negative electrode sheet after screening.

3. The waste lithium-ion battery positive and negative electrode sorting device according to claim 2, characterized in that: A negative electrode plate separating cavity is formed between the outer shell (46) and the dividing frame (47), and a positive electrode plate separating cavity is formed between the dividing frame (47) and the mating part (48).

4. The waste lithium-ion battery positive and negative electrode sorting device according to claim 2, characterized in that: The detection component includes a light emitter (43) and a receiver (44). The light emitter (43) is installed on the inner wall of the upper housing (42). The light emitter (43) emits X-rays that irradiate the positive and negative electrodes of the lithium-ion battery. The receiver (44) is installed on the inner wall of the upper housing (42) to receive the light refracted by the electrode. The positive and negative electrodes of the lithium-ion battery between the light emitter (43) and the receiver (44) are marked and distinguished according to the different types of light received by the receiver (44).

5. The waste lithium-ion battery positive and negative electrode sorting device according to claim 1, characterized in that: The reciprocating assembly (24) includes a support base (241), a motor assembly (242), and a rotating rod (243). A support plate is installed at the bottom of the vibrating plate (23). Support bases (241) are symmetrically installed on the upper surface of the main support (1). A rotating rod (243) is rotatably installed between the support bases (241). A motor assembly (242) is installed on the surface of the main support (1). The output end of the motor assembly (242) is connected to the end of the rotating rod (243). A cam (244) is installed on the rotating rod (243). The cam (244) is in contact with the support plate. A spring assembly (245) is installed at the bottom of the vibrating plate (23). The other end of the spring assembly (245) is connected to the main support (1).

6. The waste lithium-ion battery positive and negative electrode sorting device according to claim 5, characterized in that: When the cam (244) protrudes and presses against the support plate, the spring assembly (245) enters the storage state. When the cam (244) stops pressing against the support plate, the spring assembly (245) releases its own elastic force to pull the vibration plate (23) back to its original position, and flattens the positive and negative electrode sheets of the lithium-ion battery on the vibration plate (23).

Images