Device for separating positive and negative pole pieces of waste lithium battery

Abstract

The utility model relates to the technical field of battery recycling, in particular to a waste lithium battery positive and negative pole piece separation device which comprises a shell, a positive pole piece and a negative pole piece, the motor is fixedly installed on the shell, the motor is connected with the clamping assembly, and the motor can drive the clamping assembly to rotate; the cutting assembly is mounted on the shell, and the cutting assembly can move along the path of the guide rail and cut off positive and negative tabs of the waste lithium battery; the cleaning assembly is mounted on the shell, and the cleaning assembly can move along the path of the guide rail and clean the cut positive and negative tabs; the conveying assembly is installed at the discharging end of the shell, a cutting assembly is arranged on the side, away from the discharging end, of the conveying assembly, and the cutting assembly is used for conducting cutting treatment on the cut waste lithium batteries again; the drying oven is installed at the discharging end of the cutting assembly, and a collecting chamber is arranged on the side, away from the cutting assembly, of the drying oven.

Description

Technical Field

[0001] This utility model relates to the field of battery recycling technology, and in particular to a device for separating the positive and negative electrode sheets of waste lithium batteries. Background Technology

[0002] Waste lithium-ion batteries mainly include aluminum casings, plastic parts, electrolytes, positive electrode plates, negative electrode plates, and separators. Currently, the main method for recycling lithium batteries is dismantling and crushing, followed by the recovery of valuable metals using physical or chemical methods. This method of directly crushing after dismantling is not only lengthy and cumbersome, but also introduces a large number of impurities into the recovery of positive electrode active materials, resulting in high subsequent impurity removal costs and low recycling quality. Therefore, separating the positive electrode plates separately before recycling can not only shorten the recycling process, but also greatly improve the quality and recycling rate of each recycled product.

[0003] A Chinese patent with publication number CN111370796B discloses a device and method for dismantling waste lithium batteries and separating positive and negative electrode sheets. It uses a gripping device to grab the cut-off upper shell and the first end of the internal cell separator and move it to the biting and pulling device in the separation device. However, since the separator of the internal cell is fixed with high-temperature tape, grabbing the first end of the separator may cause the separator to crack. In addition, the device is in an open space, and the evaporation of electrolyte will cause air pollution and endanger the health of the workers. Utility Model Content

[0004] To address the technical problems mentioned above, this utility model proposes a device for separating the positive and negative electrode sheets of waste lithium batteries.

[0005] To achieve the above objectives, this utility model provides the following technical solution:

[0006] A device for separating positive and negative electrode sheets of waste lithium batteries, characterized in that it comprises:

[0007] The housing has guide rails on it;

[0008] The motor is fixedly mounted on the housing and connected to the clamping assembly. The motor can drive the clamping assembly to rotate.

[0009] The cutting assembly is mounted on the housing and can move along the guide rail path to cut off the positive and negative tabs of the waste lithium battery;

[0010] The cleaning component is mounted on the housing and can move along the guide rail path to clean the cut positive and negative tabs;

[0011] A conveying assembly is installed at the discharge end of the housing. A cutting assembly is provided on the side of the conveying assembly away from the discharge end. The cutting assembly is used to further cut the waste lithium batteries after cutting.

[0012] An oven is installed at the discharge end of the cutting assembly, and a collection chamber is provided on the side of the oven away from the cutting assembly.

[0013] Preferably, the clamping assembly has a cylinder inside its housing, which is connected to a clamp inside the housing and can drive the clamp to move up or down.

[0014] Preferably, the oven is equipped with an exhaust port, which is connected to the gas collection hood via a connecting pipe.

[0015] Preferably, it also includes an air separation device, which is located between the oven and the collection chamber, and the collection chamber is provided with several collection bins.

[0016] Preferably, the shell has a conveying pipe, which is arc-shaped and inclined downward from the inlet end to the outlet end.

[0017] Preferably, the inner wall of the conveying pipe is made of a material with a low coefficient of friction, so that the waste lithium batteries can fall smoothly from the arc-shaped part to the feed end of the conveying component.

[0018] Preferably, the cutting component is provided with a baffle at one end of the oven.

[0019] Compared with the prior art, the beneficial effects of this utility model are:

[0020] Compared with existing technologies, this method avoids the direct crushing of positive and negative electrode sheets from waste lithium batteries, which shortens the recycling process, improves the recycling efficiency of waste lithium batteries, and enhances the quality and recycling rate of recycled products. Furthermore, the partially enclosed environment helps to prevent environmental pollution caused by the volatilization of electrolyte during battery dismantling. Attached Figure Description

[0021] Figure 1 This is a schematic diagram of the structure of the waste lithium battery positive and negative electrode separation device proposed in this utility model;

[0022] Figure 2 This is a schematic diagram of the structure of the housing in the waste lithium battery positive and negative electrode separation device proposed in this utility model;

[0023] Figure 3 This is a side view of the waste lithium battery positive and negative electrode separation device proposed in this utility model;

[0024] Figure 4 This is a schematic diagram of the internal structure of the housing in the waste lithium battery positive and negative electrode separation device proposed in this utility model.

[0025] In the diagram: 1-shell, 101-guide rail, 102-arc section, 2-cutting assembly, 3-cleaning assembly, 4-motor, 5-box, 6-conveying assembly, 7-cutting assembly, 8-drying oven, 9-exhaust port, 10-air separation equipment, 11-collection chamber, 12-cylinder, 13-clamp. Detailed Implementation

[0026] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0027] like Figures 1-4 As shown, this embodiment provides a device for separating the positive and negative electrodes of waste lithium batteries, including:

[0028] Housing 1, with guide rail 101 provided on housing 1;

[0029] Motor 4 is fixedly mounted on housing 1. Motor 4 is connected to clamping assembly and can drive clamping assembly to rotate.

[0030] Cutting component 2 is mounted on housing 1. Cutting component 2 can move along the path of guide rail 101 and cut off the positive and negative tabs of waste lithium battery.

[0031] Cleaning component 3 is installed on housing 1. Cleaning component 3 can move along the path of guide rail 101 and clean the cut positive and negative tabs.

[0032] The conveying component 6 is installed at the discharge end of the housing 1. A cutting component 7 is provided on the side of the conveying component 6 away from the discharge end. The cutting component 7 is used to cut the waste lithium battery again.

[0033] Oven 8 is installed at the discharge end of the cutting assembly 7, and a collection chamber 11 is provided on the side of the oven 8 away from the cutting assembly 7.

[0034] Overall, the waste lithium batteries that need to be separated from their positive and negative electrodes are clamped and fixed by the clamping assembly. After clamping and fixing, the cutting assembly 2 is driven to move along the guide rail 101 to cut the positive and negative electrodes of the waste lithium batteries. After the positive and negative electrodes are cut, the cleaning assembly 3 is driven to move along the guide rail 101 to clean the cut positive and negative electrodes. After cleaning, the motor 4 drives the entire clamping assembly to rotate 180 degrees. The internal cells of the waste lithium batteries fall from the shell under their own gravity. The fallen cells reach the conveying assembly 6 through the discharge end of the shell 1 and are then conveyed to the cutting assembly 7. When the cells reach the cutting assembly 7, they are cut by the cutting assembly 7 to cut and separate the positive electrode, negative electrode and separator. The cut and separated cells are then conveyed to the oven 8 through the conveying assembly 6 for low-temperature drying. Finally, the dried cells are sent to the collection chamber 11 for collection.

[0035] like Figure 2 and Figure 4 As shown, in this embodiment, a cylinder 12 is provided inside the housing 5 of the clamping assembly. The cylinder 12 is connected to the clamp 13 inside the housing 5, and the cylinder 12 can drive the clamp 13 to move up / down.

[0036] Specifically, during the clamping process of the clamping component clamping the waste lithium battery, after the clamping and fixing of the waste lithium battery is completed by the clamp 13, the cutting component 2 is driven to move along the path of the guide rail 101. During the movement of the cutting component 2 along the guide rail 101, the driving component drives the cutting blade to rotate to complete the cutting process of the positive and negative tabs on the waste lithium battery, and drives the cleaning component 3 to move along the path of the guide rail 101. During the movement of the cleaning component 3 along the guide rail 101, the driving component drives the cleaning roller to rotate to complete the cleaning process of the positive and negative tabs.

[0037] After the motor 4 drives the clamping assembly to rotate 180 degrees, the cylinder 12 can extend and retract to drive the entire clamp 13 to move up and down. Under the action of gravity and the inertia of the up and down movement, the battery cell is separated from the waste lithium battery, which can prevent the battery cell from being unable to detach from the waste lithium battery shell due to insufficient inertial force.

[0038] like Figure 3 As shown, in this embodiment, the oven 8 is provided with an exhaust port 9, which is connected to the gas collection hood via a connecting pipe.

[0039] Specifically, the oven 8 is equipped with an exhaust port 9. The exhaust gas inside the oven 8 is drawn into the gas collection hood through the connecting pipe by a centrifugal fan. This can prevent the exhaust gas generated during the low-temperature drying process of the battery cells from polluting the environment and can also provide some protection for the staff.

[0040] like Figure 3As shown, in this embodiment, an air separation device 10 is also included. The air separation device 10 is located between the oven 8 and the collection chamber 11, and the collection chamber 11 is provided with a plurality of collection bins.

[0041] Specifically, after the battery cell is cut by the cutting component 7 and dried inside the drying oven 8, in order to collect the positive electrode, negative electrode and separator in the battery cell separately, after the positive electrode, negative electrode and separator enter the air classifier 10, due to the difference in weight of the positive electrode, negative electrode and separator, the air classifier 10 can separate the positive electrode, negative electrode and separator and collect them one by one in several collection bins. By sorting the positive electrode, negative electrode and separator, the workload of the staff can be further reduced and manual sorting can be avoided.

[0042] like Figure 1 and Figure 3 As shown, in this embodiment, the housing 1 has a conveying pipe 102, which is arc-shaped and is inclined downward from the inlet end to the outlet end.

[0043] Specifically, after the battery cell separates from the waste lithium battery casing, it can be smoothly transported to the feed end of the conveying component 6 through its own gravity and inertia and the structural design of the conveying pipe 102, which can save kinetic energy.

[0044] like Figure 3 As shown, in this embodiment, the inner wall of the conveying pipe 102 is made of a material with a low coefficient of friction so that the waste lithium batteries can fall smoothly from the arc-shaped part to the feed end of the conveying component 6.

[0045] Specifically, the inner wall of the conveying pipe 102 is made of a material with a low coefficient of friction, which allows the battery cells to fall smoothly from the conveying pipe 102 to the feed end of the conveying assembly 6.

[0046] like Figure 3 As shown, in this embodiment, the cutting component 7 is provided with a baffle at one end of the oven 8.

[0047] Specifically, the cutting component 7 is equipped with a baffle at one end of the oven 8. After the battery cell is cut, the baffle is set and the conveying component 6 conveys the positive electrode sheet, negative electrode sheet and separator smoothly into the oven 8. At the same time, the scraps generated during the battery cell cutting process can be intercepted, collected and uniformly processed, which can reduce the disposal costs of enterprises while protecting the environment.

[0048] Of course, those skilled in the art will recognize that this invention is not limited to the details of the exemplary embodiments described above, but also includes the same or similar structures that can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered exemplary and non-limiting in all respects, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, all variations falling within the meaning and scope of equivalents of the claims are intended to be included within this invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

[0049] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

[0050] The technologies, shapes, and structures not described in detail in this utility model are all known technologies.

Claims

1. A device for separating the positive and negative electrodes of waste lithium batteries, characterized in that, include: Housing (1), with guide rail (101) on the housing (1). Motor (4) is fixedly mounted on housing (1). Motor (4) is connected to clamping assembly. Motor (4) can drive clamping assembly to rotate. Cutting assembly (2) is mounted on housing (1). Cutting assembly (2) can move along the path of guide rail (101) and cut off the positive and negative tabs of waste lithium battery. Cleaning component (3) is installed on housing (1). Cleaning component (3) can move along the path of guide rail (101) and clean the cut positive and negative tabs; The conveying assembly (6) is installed at the discharge end of the housing (1). A cutting assembly (7) is provided on the side of the conveying assembly (6) away from the discharge end. The cutting assembly (7) is used to cut the waste lithium battery after cutting. The oven (8) is installed at the discharge end of the cutting assembly (7), and a collection chamber (11) is provided on the side of the oven (8) away from the cutting assembly (7).

2. The waste lithium battery positive and negative electrode separation device according to claim 1, characterized in that, The clamping assembly housing (5) is equipped with a cylinder (12), which is connected to the clamp (13) inside the housing (5). The cylinder (12) can drive the clamp (13) to move up / down.

3. The waste lithium battery positive and negative electrode separation device according to claim 1, characterized in that, The oven (8) is equipped with an exhaust port (9), which is connected to the gas collection hood via a connecting pipe.

4. The waste lithium battery positive and negative electrode separation device according to claim 1 or 3, characterized in that, It also includes an air separation device (10), which is located between the oven (8) and the collection chamber (11), which has several collection bins.

5. The waste lithium battery positive and negative electrode separation device according to claim 1, characterized in that, The housing (1) has a conveying pipe (102), which is arc-shaped and is inclined downward from the feed end to the discharge end.

6. The waste lithium battery positive and negative electrode separation device according to claim 5, characterized in that, The inner wall of the conveying pipe (102) is made of a material with a low coefficient of friction so that the waste lithium batteries can fall smoothly from the arc part to the feed end of the conveying assembly (6).

7. The waste lithium battery positive and negative electrode separation device according to claim 1, characterized in that, The cutting component (7) is provided with a baffle at one end of the oven (8).

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