A power battery pole piece powder removal device

Abstract

The present invention provides a power battery pole piece de-powdering device, comprising a feed inlet, a shell, a knife roller, a discharge port, and a driving motor. The feed inlet is arranged on the side of the shell, and the discharge port is arranged on one end face of the shell. The knife roller is arranged in the shell, and the driving motor drives the knife roller to rotate. The inner wall of the shell is evenly provided with a plurality of inner convex ridges along the axial direction, and the outer wall of the knife roller is provided with outer convex ridges matching the positions of the inner convex ridges. The present invention provides an automated, efficient, and environmentally friendly power battery pole piece de-powdering device. The present application adopts the distribution form of the Archimedean spiral lines of the outer convex ridges and the inner convex ridges. The knife roller rotates under the drive of the driving motor. The outer convex ridges and the inner convex ridges are two Archimedean spiral curves with opposite rotation directions. When rotating, the inner convex ridges and the outer convex ridges cooperate to form a shearing surface, and the power battery pole piece is cut into pieces under the action of the shear force instead of being kneaded, thereby removing the black powder on the pole piece foil, and the de-powdering rate is high.

Description

Technical Field

[0001] The present invention relates to the field of power battery recycling equipment, in particular to power battery pole piece powder removal equipment. Background Art

[0002] National policies vigorously promote the popularization of electric vehicles. As the energy storage device of electric vehicles, power batteries need to be properly disposed of and recycled after the end of their life cycle to ease resource shortages and eliminate environmental pollution.

[0003] After the waste power batteries are crushed, the positive / negative active substances (black powder) adhered to the surface of the power battery current collector - aluminum / copper foil need to be effectively separated. Since the active substances are adhered to the surface of the current collector with organic binders, most separation processes are high-temperature incineration to remove the binders, and then the aluminum / copper foil and black powder are separated by a rotary vibrating screen. However, the binders are mainly PVDF (polyvinylidene fluoride) and CMC (carboxymethyl cellulose). High-temperature incineration will bring fluoride smoke pollution, high production energy consumption, and the high-temperature incineration process cannot guarantee the complete separation of aluminum / copper foil and black powder. It is still necessary to go through a de-powdering process to increase the black powder yield.

[0004] Therefore, at a stage where the power battery recycling industry still needs national policy and financial support to develop, an automated, efficient and environmentally friendly power battery pole piece powder removal equipment is needed. Summary of the invention

[0005] The purpose of the present invention is to provide an automated, efficient and environmentally friendly power battery pole piece powder removal device.

[0006] The above technical purpose of the present invention is achieved through the following technical scheme: a power battery pole piece de-powdering equipment, including a feed port, a shell, a knife roller, a discharge port, and a drive motor. The shell side is provided with a feed port, and one end face of the shell is provided with a discharge port. The knife roller is arranged in the shell. The drive motor drives the knife roller to rotate. The inner wall of the shell is evenly provided with a plurality of inner ridges along the axial direction, and the outer wall of the knife roller is provided with outer ridges matching the positions of the inner ridges.

[0007] By adopting the above technical solution, the shell of the device is a horizontal cylindrical shape. When in use, the motor drives the knife roller to rotate, and the inner ridges of the inner wall of the shell interact with the outer ridges on the knife roller to remove the positive / negative battery materials adhering to the aluminum / copper foil.

[0008] As a further configuration of the present invention, in the direction from the feed port to the discharge port, the inner convex ridges are distributed on the inner wall of the shell in a continuous stepless and gradually shrinking curved path.

[0009] As a further configuration of the present invention, the inner ridges are distributed along an Archimedean spiral path on the inner surface of the shell.

[0010] By adopting the above technical solution, the ridges of the Archimedean spiral that gradually shrinks from the feed inlet to the discharge outlet can gradually cut the battery pole pieces along the path and gradually and completely remove the black powder therein.

[0011] As a further configuration of the present invention, the cross section of the inner convex ridge is triangular.

[0012] By adopting the above technical solution, it is convenient to shear and crush the battery pole pieces.

[0013] As a further configuration of the present invention, the inner ridge is detachably mounted on the inner wall of the housing. The inner ridge is mounted in the housing in sections by means of replaceable wearing parts.

[0014] By adopting the above technical solution, since the inner ridge is a wearable part, the inner ridge can be replaced after being worn, which can reduce production costs.

[0015] As a further configuration of the present invention, the outer convex ridges are distributed along the Archimedean spiral path, and the rotation direction of the Archimedean spiral of the outer convex ridges is opposite to the rotation direction of the Archimedean spiral of the inner convex ridges.

[0016] By adopting the above technical solution, the inner convex ridges and the outer convex ridges with opposite directions can form a shearing surface for shearing the pole piece, and the battery pole piece can be sheared to achieve the purpose of removing black powder from the pole piece.

[0017] As a further configuration of the present invention, the cross section of the outer convex ridge is rectangular.

[0018] As a further configuration of the present invention, a plurality of the inner convex ridges are arranged at intervals, and a plurality of the outer convex ridges are arranged at intervals.

[0019] As a further configuration of the present invention, the intervals between the plurality of inner ridges gradually decrease from the feed inlet to the discharge outlet, and the intervals between the plurality of outer ridges gradually decrease from the feed inlet to the discharge outlet.

[0020] By adopting the above technical solution, the inner and outer ridges are easy to disassemble, and at the same time, the battery pole pieces will be gradually cut smaller as they move in the discharge direction. Therefore, the distance between the inner and outer ridges is gradually reduced, providing a barrier for the small pole pieces, which is convenient for thorough shearing of the pole pieces.

[0021] Beneficial effects of the present invention: The present invention is significantly different from the existing grain shelling equipment. The existing grain shelling equipment is generally a grinding disc with radial ridges, or a ridge with parallel structures of inner and outer shells. This design is because grains such as rice are granular, and the shelling machine will not cause the rice core to roll, resulting in a low shelling rate. The present invention processes black powder adhering to copper and aluminum foil. The use of radial ridge grinding discs or parallel ridges will cause the copper and aluminum foil to aggregate due to the rubbing force during the powder removal process, and the black powder will be wrapped in the copper and aluminum particles, resulting in a low powder removal rate. Therefore, the present application adopts the distribution form of the Archimedean spiral line of the outer ridge and the inner ridge. The knife roller rotates under the drive of the driving motor. The outer ridge and the inner ridge are two Archimedean spiral curves with opposite rotation directions. When rotating, the inner ridge and the outer ridge cooperate to form a shearing surface, and the power battery pole piece is cut small under the action of the shear force instead of rubbing, thereby removing the black powder on the pole piece foil, and the powder removal rate is high. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings required for use in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0023] Figure 1 It is a schematic diagram of the cross-sectional structure of the shell of the power battery pole piece powder removal device of the present invention;

[0024] Figure 2 It is a schematic diagram of the top view of the structure of the power battery pole piece de-powdering device of the present invention.

[0025] In the figure, 1, feed port, 2, shell, 3, knife roller, 4, discharge port, 5, drive motor, 6, inner convex ridge, 7, outer convex ridge, 8, belt. DETAILED DESCRIPTION

[0026] The technical solution of the present invention will be clearly and completely described below in conjunction with specific embodiments. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0027] See also Figure 1-2The present invention provides a power battery pole piece de-powdering device, comprising a feed port 1, a shell 2, a knife roller 3, a discharge port 4, and a drive motor 5. The feed port 1 is arranged on the side of the shell 2, and the discharge port 4 is arranged on one end face of the shell 2. The knife roller 3 is arranged in the shell 2, and the drive motor 5 drives the knife roller 3 to rotate through a belt 8. The inner wall of the shell 2 is evenly provided with a plurality of inner convex ridges 6 along the axial direction, and the outer wall of the knife roller 3 is provided with an outer convex ridge 7 matching the position of the inner convex ridge 6.

[0028] Specifically, from the feed port 1 to the discharge port 4, the inner ridge 6 is distributed on the inner wall of the shell 2 in a continuous stepless and gradually shrinking curved path. Specifically, the inner ridge 6 is distributed along the Archimedean spiral path on the inner surface of the shell 2, and the outer ridge 7 is distributed along the Archimedean spiral path, and the rotation direction of the Archimedean spiral of the outer ridge 7 is opposite to the rotation direction of the Archimedean spiral of the inner ridge 6.

[0029] Specifically, the cross section of the inner ridge 6 is triangular, and is mounted on the housing in sections by using replaceable wearing parts.

[0030] Specifically, the cross section of the outer ridge 7 is rectangular.

[0031] Specifically, a plurality of the inner ridges 6 are arranged at intervals, a plurality of the outer ridges 7 are arranged at intervals, and the intervals between the inner ridges 6 gradually decrease from the feed port 1 to the discharge port 4 , and the intervals between the outer ridges 7 gradually decrease from the feed port 1 to the discharge port 4 .

[0032] Working principle: The present invention is significantly different from the existing grain shelling equipment. The existing grain shelling equipment is generally a grinding disc with radial ridges, or a ridge with parallel structures of inner and outer shells. This design is because grains such as rice are granular, and the shelling machine will not cause the rice core to roll, resulting in a low shelling rate. The present invention processes black powder adhering to copper and aluminum foil. The use of radial ridge grinding discs or parallel ridges will cause the copper and aluminum foil to aggregate due to the rubbing force during the powder removal process, and the black powder will be wrapped in the copper and aluminum particles, resulting in a low powder removal rate. Therefore, the present application adopts the distribution form of the Archimedean spiral line of the outer ridge 7 and the inner ridge 6. The knife roller 3 rotates under the drive of the drive motor 5. The outer ridge 7 and the inner ridge 6 are two Archimedean spiral curves with opposite rotation directions. When rotating, the inner ridge 6 and the outer ridge 7 cooperate to form a shearing surface, which cuts the power battery pole piece under the action of shear force instead of rubbing it, thereby removing the black powder on the pole piece foil, and the powder removal rate is high.

[0033] The above is a detailed introduction to a power battery pole piece de-powdering device provided by the present invention. Specific embodiments are used herein to illustrate the principles and implementation methods of the present invention. The description of the above embodiments is only used to help understand the method of the present invention and its core idea. It should be pointed out that for ordinary technicians in this technical field, without departing from the principles of the present invention, several improvements and modifications can be made to the present invention, and these improvements and modifications also fall within the scope of protection of the claims of the present invention.

Claims

1. A power battery pole piece powder removal device, characterized in that: The invention comprises a feed port (1), a shell (2), a knife roller (3), a discharge port (4), and a drive motor (5); the feed port (1) is arranged on the side of the shell (2); the discharge port (4) is arranged on one end face of the shell (2); the knife roller (3) is arranged in the shell (2); the drive motor (5) drives the knife roller (3) to rotate; the inner wall of the shell (2) is evenly provided with a plurality of inner ridges (6) along the axial direction; the outer wall of the knife roller (3) is provided with outer ridges (7) matching the positions of the inner ridges (6); and the feed port (1) is arranged on the side of the shell (2); the discharge port (4) is arranged on the end face of the shell (2); the knife roller (3) is arranged in the shell (2); and the drive motor (5) drives the knife roller (3) to rotate. In the direction of the discharge port (4), the inner ridge (6) is distributed on the inner wall of the shell (2) in a continuous stepless and gradually shrinking curved path, the inner ridge (6) is distributed on the inner surface of the shell (2) along an Archimedean spiral path, the outer ridge (7) is distributed along an Archimedean spiral path, the rotation direction of the Archimedean spiral of the outer ridge (7) is opposite to the rotation direction of the Archimedean spiral of the inner ridge (6), a plurality of the inner ridges (6) are arranged at intervals, and a plurality of the outer ridges (7) are arranged at intervals.

2. The power battery pole piece powder removal device according to any one of claim 1, characterized in that: The cross section of the inner convex ridge (6) is triangular.

3. The power battery pole piece powder removal equipment according to claim 2, characterized in that: The inner ridge (6) is detachably mounted on the inner wall of the shell (2).

4. The power battery pole piece powder removal equipment according to claim 1, characterized in that: The cross section of the outer convex ridge (7) is rectangular.

5. The power battery pole piece powder removal equipment according to claim 1, characterized in that: The intervals between the plurality of inner ridges (6) gradually decrease from the feed inlet (1) to the discharge outlet (4), and the intervals between the plurality of outer ridges (7) gradually decrease from the feed inlet (1) to the discharge outlet (4).

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