Lithium battery electrolyte recovery device

Abstract

The utility model discloses a lithium battery electrolyte recovery device, and belongs to the technical field of lithium battery electrolyte recovery. Comprising an evaporation barrel; a plurality of communicated communicating rings are arranged in the middle of the evaporation barrel, a plurality of heating wires are arranged on the upper portion of the evaporation barrel, a plurality of nozzles are arranged above the communicating rings respectively, the communicating rings are communicated with the lower portion of an electrolyte box through a first pump body, the electrolyte box is communicated with the lower portion of the evaporation barrel through a second pump body, and the upper end of the evaporation barrel is communicated with a collecting box through a condensation pipe. A valve is arranged on a pipeline for communicating the pump body II with the evaporation barrel; a pump body I is arranged to convey electrolyte in an electrolyte box into a communicating ring, so that the electrolyte is sprayed out from a spray head, an organic solvent in the water-mist-shaped electrolyte can be quickly vaporized under the action of a heating wire, and the vaporized organic solvent can rise to enter a condensation pipe and then is liquefied to enter a collection box; and the non-vaporized part of the electrolyte can be stored at the lower part of the evaporation barrel, and the electrolyte can be reheated in the collection box by opening the valve and the second pump body.

Description

Technical Field

[0001] This invention provides a lithium battery electrolyte recycling device, belonging to the field of lithium battery electrolyte recycling technology. Background Technology

[0002] Lithium-ion batteries are high-energy-density batteries that utilize the movement of lithium ions between positive and negative electrodes to achieve charging and discharging processes. They are mainly composed of positive electrode, negative electrode, electrolyte, and separator. The positive electrode material is usually a lithium-containing compound, while the negative electrode is mostly graphite. Due to their advantages such as lightweight, high voltage, long cycle life, and low self-discharge rate, lithium-ion batteries are widely used in consumer electronics, electric vehicles, and energy storage systems.

[0003] The electrolyte of lithium batteries is recycled in various situations, such as at the end of the battery's life, waste disposal during the production process, and handling of damaged or faulty batteries. The electrolyte contains a variety of chemical substances, including organic solvents and lithium salts. If it is discarded directly without recycling, it will cause serious environmental pollution.

[0004] Currently, pyrolysis is a common method for treating lithium battery electrolytes. It mainly involves heating the electrolyte in a container to evaporate the organic solvent, and then using a condenser to recover it. However, currently, ordinary containers are used to hold the electrolyte, resulting in a slow evaporation rate and low efficiency. Utility Model Content

[0005] The technical problem this invention aims to solve is that the current method of treating electrolytes using pyrolysis is slow and inefficient.

[0006] To solve the above problems, the proposed technical solution is as follows: a lithium battery electrolyte recovery device, including an evaporation tank; the middle part of the evaporation tank is provided with several interconnected connecting rings, the upper part is provided with several heating wires, and several nozzles are respectively provided above the several connecting rings; the connecting rings are connected to the lower part of the electrolyte tank through a pump body one, the electrolyte tank is connected to the lower part of the evaporation tank through a pump body two, the upper end of the evaporation tank is connected to a collection tank through a condenser pipe, and a valve is provided on the pipe connecting the pump body two to the evaporation tank.

[0007] As an improvement, the upper part of the evaporation tank gradually narrows;

[0008] As an improvement, after the pump body delivers the electrolyte from the electrolyte tank to the connecting ring, the electrolyte is sprayed out of the nozzle at a height equal to that of the heating wire.

[0009] As an improvement, the lowest end of the pipe connecting the bottom of the pump body to the electrolyte tank is on the same plane as the bottom end of the electrolyte tank;

[0010] As an improvement, the lowest end of the pipe at the bottom of the pump body connecting the evaporator is on the same plane as the bottom end of the evaporator.

[0011] The beneficial effects of this utility model are:

[0012] Pump body one delivers the electrolyte from the electrolyte tank to the connecting ring inside the evaporator, causing the electrolyte to spray out from the nozzle. Under the action of the heating wire, the organic solvent inside the water mist electrolyte can be rapidly vaporized. The vaporized organic solvent rises into the condenser and then liquefies into the collection tank. The unvaporized portion of the electrolyte is stored at the bottom of the evaporator. By opening the valve and pump body two, the electrolyte can be reheated in the collection tank. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the structure of a lithium battery electrolyte recovery device according to the present invention. Figure 1 .

[0014] Figure 2 This is a schematic diagram of the structure of a lithium battery electrolyte recovery device according to the present invention. Figure 2 .

[0015] Figure 3 This is a schematic diagram of the internal structure of the evaporation tank of a lithium battery electrolyte recovery device according to this utility model.

[0016] 1. Evaporation tank; 2. Connecting ring; 3. Heating wire; 4. Nozzle; 5. Pump body one; 6. Electrolyte tank; 7. Pump body two; 8. Condenser; 9. Collection tank; 10. Valve. Detailed Implementation

[0017] The present invention will be further described below with reference to the accompanying drawings.

[0018] according to Figure 1 As shown in Figure 3: This utility model provides a lithium battery electrolyte recovery device, including an evaporation tank 1; the evaporation tank 1 has several interconnected connecting rings 2 in the middle and several heating wires 3 at the top, and several nozzles 4 are respectively provided above the connecting rings 2. The connecting rings 2 are connected to the lower part of the electrolyte tank 6 through a pump body 5; after the pump body 5 delivers the electrolyte in the electrolyte tank 6 to the connecting rings 2, the electrolyte is sprayed out from the nozzles 4 at a height equal to the height of the heating wires 3; the lowest end of the pipe connecting the lower part of the pump body 5 to the electrolyte tank 6 is at the same plane as the lower end of the electrolyte tank 6; thus, by starting the pump body 5, the electrolyte in the electrolyte tank 6 can be delivered to the connecting rings 2, so that the electrolyte is sprayed out from the nozzles 4. The water mist electrolyte can quickly vaporize the organic solvent inside under the action of the heating wires 3.

[0019] according to Figure 1 , 2As shown: The upper end of the evaporator 1 is connected to the collection box 9 through the condenser 8; the upper end of the evaporator 1 gradually narrows; in this way, the vaporized organic solvent will rise and be re-liquefied through the condenser 8, and then enter the evaporator 1.

[0020] according to Figure 1 , 2 As shown: the electrolyte tank 6 is connected to the lower part of the evaporation tank 1 through the second pump body 7. A valve 10 is installed on the pipe connecting the second pump body 7 to the evaporation tank 1. The lowest end of the pipe connecting the second pump body 7 to the lower part of the evaporation tank 1 is on the same plane as the lower end of the evaporation tank 1. In this way, the unvaporized electrolyte will fall and accumulate at the lower part of the evaporation tank 1. When the organic solvent in a batch of electrolyte is completely vaporized or when the electrolyte is pyrolyzed again, the electrolyte at the lower part of the evaporation tank 1 can flow back into the electrolyte tank 6 by opening the valve 10 and the second pump body 7.

[0021] The principle of this invention is as follows: During use, pump 5 is activated first. Pump 5 transports the electrolyte from the electrolyte tank 6 to the connecting ring 2, causing the electrolyte to spray out from the nozzle 4. Under the action of the heating wire 3, the organic solvent inside the water mist electrolyte rapidly vaporizes. The vaporized organic solvent rises and re-liquefies through the condenser 8, then enters the evaporation tank 1. Unvaporized electrolyte falls and accumulates at the bottom of the evaporation tank 1. When the organic solvent in a batch of electrolyte has completely vaporized, or when the electrolyte is subjected to pyrolysis again, opening valve 10 and pump 7 allows the electrolyte at the bottom of the evaporation tank 1 to flow back into the electrolyte tank 6. After the pyrolysis of a batch of electrolyte is complete, the electrolyte in the electrolyte tank 6 is replaced. When a certain amount of organic solvent is collected in the collection tank 9, the organic solvent is processed, and then the collection tank 9 is reinstalled. During installation, ensure that all parts of the device are tightly connected.

[0022] The present invention and its embodiments have been described above. This description is not restrictive, and the accompanying drawings are only one embodiment of the present invention; the actual structure is not limited thereto. In conclusion, if those skilled in the art are inspired by this description and design similar structures and embodiments without departing from the inventive spirit of the present invention, such designs should fall within the protection scope of the present invention.

Claims

1. A lithium battery electrolyte recovery device, comprising an evaporation tank (1); characterized in that: The evaporation tank (1) has several interconnected connecting rings (2) in the middle and several heating wires (3) in the upper part. Several nozzles (4) are respectively provided above the several connecting rings (2). The connecting rings (2) are connected to the lower part of the electrolyte tank (6) through pump body one (5). The electrolyte tank (6) is connected to the lower part of the evaporation tank (1) through pump body two (7). The upper end of the evaporation tank (1) is connected to the collection tank (9) through the condenser pipe (8). A valve (10) is provided on the pipe of pump body two (7) connecting to the evaporation tank (1).

2. The lithium battery electrolyte recovery device of claim 1, wherein: The upper part of the evaporation tank (1) gradually narrows.

3. The lithium battery electrolyte recovery device of claim 1, wherein: After the pump body (5) delivers the electrolyte in the electrolyte tank (6) to the connecting ring (2), the electrolyte is sprayed out from the nozzle (4) at a height equal to that of the heating wire (3).

4. The lithium battery electrolyte recovery device according to claim 1, characterized in that: The bottom end of the pipe connecting the pump body (5) to the lower part of the electrolyte tank (6) is on the same plane as the bottom end of the electrolyte tank (6).

5. The lithium battery electrolyte recovery device of claim 1, wherein: The bottom end of the pipe connecting the second pump body (7) to the lower part of the evaporator (1) is on the same plane as the bottom end of the evaporator (1).

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