A carbon anode material cleaning system

Abstract

This invention proposes a carbon anode material cleaning system, comprising: a water tank equipped with an ultrasonic generator and a heater; a vertically adjustable basket above the water tank; a filter assembly for intercepting positive and negative electrode material particles within the water tank; and a scraping mechanism for cleaning accumulated material from the filter assembly. This invention utilizes ultrasonic waves to vibrate and clean the battery electrodes, causing positive and negative electrode material particles to detach from the electrodes. These detached particles are intercepted by the filter, and after a certain amount is collected, a scraper scoops up and collects the particles, thus ensuring the purity of the recovered positive and negative electrode material particles.

Description

Technical Field

[0001] This invention relates to the field of battery recycling technology, and more specifically to a carbon anode material cleaning system. Background Technology

[0002] Lithium-ion batteries generally consist of four main materials: positive electrode material, negative electrode material, separator, and electrolyte. After a period of use, lithium-ion batteries need to be recycled. The focus of lithium-ion battery recycling is the recycling of these four main materials, especially the positive electrode material and the negative electrode material.

[0003] The positive electrode of a lithium battery consists of a metal sheet and positive electrode material attached to the metal sheet, while the negative electrode consists of a metal sheet and negative electrode material attached to the metal sheet. When recycling the positive and negative electrode sheets, the positive and negative electrode materials need to be recycled separately from the positive and negative electrode sheets.

[0004] Currently, when recycling positive and negative electrode sheets, the sheets are usually crushed before the metal particles and positive and negative electrode particles are recycled separately. However, because the metal particles and positive and negative electrode material particles are mixed together after the sheets are crushed, the recycled metal particles and positive and negative electrode material particles contain a lot of impurities. Summary of the Invention

[0005] To address the technical problems existing in the background art, this invention proposes a carbon anode material cleaning system.

[0006] The present invention proposes a carbon anode material cleaning system, comprising: a water tank equipped with an ultrasonic generator and a heater, a basket that can be raised and lowered above the water tank, and a filter assembly for intercepting positive and negative electrode material particles and a scraping mechanism for cleaning the accumulated material on the filter assembly inside the water tank.

[0007] Preferably, the filter assembly includes an outer frame and a filter screen. The inner side of the outer frame is provided with a groove along its peripheral wall and an elastic element disposed in the groove. The filter screen is located inside the outer frame, and its edge is located in the groove and connected to the elastic element. The scraping mechanism includes a scraper ring, a traction cable, and an unwinding component for controlling the unwinding length of the traction cable. The scraper ring is located above the middle of the filter screen. One end of the traction cable passes through the scraper ring and is connected to the filter screen, and the other end is connected to the unwinding component.

[0008] Preferably, the unwinding component is mounted on the basket and moves up and down with the basket.

[0009] Preferably, the unwinding component is mounted on the water tank.

[0010] Preferably, the unwinding component includes a power component and a drum that can be driven by the power component to rotate in both directions, and one end of the traction cable 5 is connected to the drum.

[0011] Preferably, a guide wheel is provided above the scraper ring, one end of the traction cable passes through the scraper ring and is connected to the filter screen, and the other end is connected to the unwinding component via the guide wheel.

[0012] Preferably, the unwinding component includes a connecting structural member, which is fixed to the basket, and one end of the traction cable is fixed to the structural member.

[0013] Preferably, the outer frame is provided with vertically fixed uprights, and the scraper ring is fixed to the uprights via connecting rods.

[0014] Preferably, the filter assembly is installed vertically within the water tank, and a guide plate is provided below the filter assembly. The guide plate is inclined and fixedly connected to the outer frame, and there is a gap between the lowest end of the guide plate and the outer frame.

[0015] Preferably, it also includes a connector A and a connector B that can be connected to each other, wherein connector A is installed on the upright and connector B is installed on the outer wall of the suspended platform.

[0016] Preferably, connector A includes a hook and a connecting rope connecting the hook to the upright, and connector B is a hanging ring for the hook to be attached.

[0017] Preferably, the upright is a hollow pole with a counterweight that can move up and down inside, and a retaining ring at its end to prevent the counterweight from sliding out; one end of the connecting rope is fixed to the counterweight, and the other end is connected to the hook.

[0018] The carbon anode material cleaning system of the present invention includes a water tank equipped with an ultrasonic generator and a heater. A vertically movable basket is positioned above the water tank. Inside the water tank are a filter assembly for intercepting positive and negative electrode material particles and a scraping mechanism for cleaning accumulated material on the filter assembly. The basket holds the battery electrodes to be de-powdered and brings them into the water tank. Ultrasonic waves vibrate and clean the battery electrodes, causing the positive and negative electrode material particles to detach. These detached particles are intercepted by the filter, and after a certain amount is collected, a scraper scoops up and collects the particles, thus ensuring the purity of the recovered positive and negative electrode material particles. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the structure of a carbon anode material cleaning system proposed in this invention.

[0020] Figure 2 This is a schematic diagram of the filter assembly in a carbon anode material cleaning system proposed in this invention.

[0021] Figure 3 This is a schematic diagram of the installation of the filter assembly in a water tank in a carbon negative electrode material cleaning system proposed in this invention.

[0022] Figure 4 This is a schematic diagram of the assembly of connector A with the upright in a carbon negative electrode material cleaning system proposed in this invention. Detailed Implementation

[0023] Reference Figure 1 The present invention proposes a carbon anode material cleaning system, comprising: a water tank 1 equipped with an ultrasonic generator and a heater; a vertically adjustable basket 2 above the water tank 1; a filter assembly 3 for intercepting positive and negative electrode material particles and a scraping mechanism for cleaning accumulated material on the filter assembly 3; and the specific working method is as follows:

[0024] The heater heats the water in the water tank 1, and the ultrasonic generator emits 20Hz ultrasonic waves. The battery electrode sheets to be de-powdered are transported to the water tank 1 by the basket 2, so that the ultrasonic waves can vibrate and clean the battery electrode sheets in the basket, causing the electrode material particles attached to the metal sheets to fall off. The fallen positive and negative electrode material particles are intercepted and collected by the filter assembly 3. After a certain amount is collected, the material on the filter assembly 3 is cleaned by the scraping mechanism.

[0025] Reference Figure 2-3 The filter assembly 3 includes an outer frame 31 and a filter screen 32. The inner side of the outer frame 31 is provided with a groove along its peripheral wall and an elastic element 10 disposed in the groove. The outer frame 31 is provided with a vertically fixed upright 311. The filter screen 32 is located inside the outer frame 31, and its edge is located in the groove and connected to the elastic element 10. The scraping mechanism includes a scraper ring 4, a traction cable 5, and an unwinding component 6 for controlling the unwinding length of the traction cable 5. The scraper ring 4 is located above the middle of the filter screen 32 and is fixed to the upright 311 by a connecting rod. One end of the traction cable 5 passes through the scraper ring 4 and is connected to the filter screen 32, and the other end is connected to the unwinding component 6. When the accumulated material on the filter screen 32 reaches a certain thickness, the unwinding component 6 shortens the length of the traction cable 5 to gradually lift the filter screen 32 from the middle. During the lifting process, the filter screen 32 needs to pass through the scraper ring 4, and the edge of the filter screen 32 is subjected to the tension of the elastic element 10, so that when the filter screen 32 passes through the scraper ring 4, its surface is scraped by the scraper ring 4, thereby achieving the purpose of cleaning the accumulated material.

[0026] Specifically: The filter assembly 3 is installed vertically within the water tank 1. A guide plate 7 is located below the filter assembly 3, and the guide plate 7 is inclined and fixedly connected to the outer frame 31. When cleaning accumulated material, the filter assembly 3 is positioned above the water surface, and a receiving container is placed at the lowest end of the guide plate 7. The accumulated material cleaned from the filter screen 32 by the scraper ring 4 automatically falls onto the guide plate 7 and down the inclined surface of the guide plate 7 into the receiving container.

[0027] Furthermore, in order to facilitate the lifting of the filter assembly 3 without adding extra power, this embodiment also provides connectors A8 and B9 that can be connected to each other. Connector A8 is installed on the upright 311, and connector B9 is installed on the outer wall of the basket 2. When it is necessary to lift the filter assembly 3 out of the water, connectors A8 and B9 are connected so that it can be lifted by the rise of the basket 2.

[0028] Reference Figure 4 Specifically: Connector A8 includes a hook 81 and a connecting rope 82 connecting the hook 81 to the upright 311; connector B9 is a hanging ring for the hook 81 to hook onto. The upright 311 is a hollow rod with a counterweight 11 that can move up and down inside, and a retaining ring at its end to prevent the counterweight 11 from sliding out; one end of the connecting rope 82 is fixed to the counterweight 11, and the other end is connected to the hook 81. This structural design ensures that a certain distance is maintained between the suspended basket 2 and the filter assembly 3, and the hollow upright 311 and the counterweight 11 work together to automatically store the connecting rope 82, making the outer tube structure simpler.

[0029] Furthermore, in this embodiment, the specific installation methods of the unwinding component 6 include at least the following two:

[0030] The first type involves installing the unwinding component 6 on the suspended basket 2 and raising and lowering it along with the suspended basket 2. This installation method can prevent the unwinding component 6 from interfering with the entry and exit of the suspended basket 2 from the water tank 1.

[0031] The second method involves installing the unwinding component 6 on the water tank 1, which facilitates inspection and maintenance.

[0032] In this embodiment, the unwinding component 6 includes at least the following two structural designs:

[0033] In the first embodiment, the unwinding component 6 includes a power unit and a drum that can be driven to rotate by the power unit. One end of the traction cable 5 is fixedly mounted on the drum. The power unit controls the forward or reverse rotation of the drum to achieve the unwinding or rewinding of the traction cable 5. Furthermore, to facilitate the rewinding of the traction cable 5, a guide wheel is also provided above the scraper ring 4 in this embodiment. One end of the traction cable 5 passes through the scraper ring 4 and connects to the filter screen 32, while the other end is connected to the unwinding component 6 via the guide wheel. This type of unwinding component 6 can be installed on either the suspended basket 2 or the water tank 1.

[0034] The second type includes a connecting structural component 6, which is fixed to the basket 2, with one end of the traction cable 5 fixed to the structural component. During normal electrode cleaning operations, the lifting height of the basket 2 does not pull the traction cable 5. When it is necessary to clean the accumulated material on the filter screen 32, the lifting height of the basket 2 is increased, thereby pulling the filter screen 32 through the scraper ring 4 via the traction cable 5 to clean the surface of the filter screen. This structure is the simplest and lowest cost, but it is not suitable for situations where the filter screen assembly 3 is lifted using the basket 2.

[0035] The above description is only a preferred embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in the present invention, based on the technical solution and inventive concept of the present invention, should be covered within the scope of protection of the present invention.

Claims

1. A carbon anode material cleaning system, characterized in that, include: A water tank (1) is equipped with an ultrasonic generator and a heater. A basket (2) that can be raised and lowered is provided above the water tank (1). A filter assembly (3) for intercepting positive and negative electrode material particles and a scraping mechanism for cleaning the accumulated material on the filter assembly (3) are provided inside the water tank (1). The filter assembly (3) includes an outer frame (31) and a filter screen (32). The inner side of the outer frame (31) is provided with a groove along its peripheral wall and an elastic element (10) disposed in the groove. The filter screen (32) is located inside the outer frame (31), and its edge is located in the groove and connected to the elastic element (10). The scraping mechanism includes a scraper ring (4), a traction cable (5), and an unwinding component (6) for controlling the unwinding length of the traction cable (5). The scraper ring (4) is located above the middle of the filter screen (32). One end of the traction cable (5) passes through the scraper ring (4) and is connected to the filter screen (32), and the other end is connected to the unwinding component (6). The outer frame (31) is provided with a vertically fixed upright (311), and the scraper ring (4) is fixed to the upright (311) by a connecting rod; It also includes a connector A (8) and a connector B (9) that can be connected to each other, wherein the connector A (8) is installed on the upright (311) and the connector B (9) is installed on the outer wall of the basket (2); Connector A (8) includes a hook (81) and a connecting rope (82) connecting the hook (81) and the upright (311); connector B (9) is a hanging ring for the hook (81) to hook. The upright pole (311) is a hollow pole with a counterweight (11) that can move up and down inside. A retaining ring is provided at its end to prevent the counterweight (11) from sliding out. One end of the connecting rope (82) is fixed to the counterweight (11), and the other end is connected to the hook (81).

2. The carbon anode material cleaning system according to claim 1, characterized in that, The unwinding component (6) is installed on the basket (2) and rises and falls with the lifting of the basket (2).

3. The carbon anode material cleaning system according to claim 1, characterized in that, The unwinding component (6) is installed on the water tank (1).

4. The carbon anode material cleaning system according to claim 2 or 3, characterized in that, The unwinding component (6) includes a power component and a drum that can be driven by the power component to rotate in both directions. One end of the traction cable (5) is connected to the drum.

5. The carbon anode material cleaning system according to claim 1, characterized in that, A guide wheel is provided above the scraper ring (4). One end of the traction cable (5) passes through the scraper ring (4) and is connected to the filter screen (32), while the other end is connected to the unwinding component (6) via the guide wheel.

6. The carbon anode material cleaning system according to claim 2, characterized in that, The unwinding component (6) includes a connecting structural member, which is fixed to the basket (2), and one end of the traction cable (5) is fixed to the structural member.

7. The carbon anode material cleaning system according to claim 1, characterized in that, The filter assembly (3) is installed in the water tank (1) and can move up and down. A guide plate (7) is provided below the filter assembly (3). The guide plate (7) is set at an angle and is fixedly connected to the outer frame (31).

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