Electrolyte volatilization recovery device

Abstract

The utility model discloses an electrolyte volatilization recovery device which comprises a shell, an induced draft fan, a condensation pipe, a liquid storage box and a cooling assembly, a first outlet formed in the upper portion of the shell is communicated with an air inlet of the induced draft fan, an air outlet of the induced draft fan is communicated with an inlet of the condensation pipe, and an outlet in the condensation pipe is communicated with a material storage box used for storing electrolyte. An exhaust port formed in the storage box communicates with an air inlet formed in the lower portion of the shell through a circulating pipeline, and the cooling assembly is connected with the condensation pipe and used for cooling the condensation pipe; according to the electrolyte volatilization recovery device provided by the utility model, the nitrogen is added into the shell for protection, and the nitrogen enters the shell through the circulating pipeline after being cooled by the condensing pipe along with the gaseous electrolyte, so that the temperature in the shell can be properly reduced, the ignition and combustion of fragments caused by over-high temperature in the shell are avoided, and the device is safer.

Description

Technical Field

[0001] The utility model relates to the technical field of battery recycling, in particular to an electrolyte volatilization recycling device. Background Art

[0002] Lithium-ion batteries are widely used in electronics, transportation, energy storage, aerospace and other fields due to their significant advantages such as low cost, good safety performance, long life, high specific energy, no memory effect, and environmental friendliness. It is expected that in the next few years, a large number of waste batteries will be generated after the end of the service life of lithium-ion batteries, but the battery's liquid core still contains a large amount of electrolyte, which needs to be recycled to avoid wasting resources.

[0003] However, electrolyte recovery needs to be carried out in a high-temperature environment. The fragments of the liquid-carrying core are easily burned at high temperatures, causing safety problems. Utility Model Content

[0004] In order to solve the technical problems existing in the background technology, the utility model proposes an electrolyte volatilization recovery device.

[0005] The utility model proposes an electrolyte volatilization recovery device, which comprises a shell, an induced draft fan, a condenser, a liquid storage box, and a cooling component. A first outlet opened at the upper part of the shell is connected to an air inlet of the induced draft fan, an air outlet of the induced draft fan is connected to an inlet of the condenser, an outlet on the condenser is connected to a storage box for storing electrolyte, an exhaust port opened on the storage box is connected to an air inlet opened at the lower part of the shell through a circulation pipeline, and the cooling component is connected to the condenser for cooling the condenser.

[0006] Preferably, the outlet of the circulation pipeline is connected to the air inlet of the shell through a three-way valve, the inlet of the three-way valve is connected to the outlet of the circulation pipeline, the first outlet of the three-way valve is connected to the air inlet of the shell, and the second outlet is connected to the external inert gas negative pressure tank.

[0007] Preferably, the condenser is composed of a first cooling section and a second cooling section in the direction from the inlet to the outlet, wherein the circulation pipe is connected to the first cooling section of the condenser, and the cooling assembly is connected to the second cooling section of the condenser.

[0008] Preferably, the circulation pipeline is spirally wound around the first cooling section of the condenser tube, and the flow direction of the material flowing through the circulation pipeline is opposite to the flow direction of the material flowing through the condenser tube.

[0009] Preferably, the cooling assembly includes a refrigerator and a heat conductor, and the heat conductor is arranged between the refrigerator and the second cooling section of the condenser tube.

[0010] The utility model provides an electrolyte volatilization recovery device, which also comprises a heat preservation box, and the condenser is located in the heat preservation box.

[0011] The electrolyte volatilization recovery device proposed in the utility model adds nitrogen protection in the shell, and the nitrogen is cooled along with the gaseous electrolyte through the condenser and then enters the shell through the circulation pipeline, which can appropriately reduce the temperature in the shell to avoid the ignition and combustion of fragments due to excessive temperature in the shell, making the device safer; in addition, the volatilized electrolyte is pre-cooled when passing through the first cooling section of the condenser, and then cooled and condensed by the cooling component when passing through the second cooling section of the condenser, so that the heat in the device can be fully utilized, the energy utilization rate is improved, and the energy consumption is reduced. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 This is a cross-sectional schematic diagram of the overall structure of an electrolyte volatilization recovery device proposed by the utility model;

[0013] Figure 2 The utility model provides a schematic diagram of the flow direction of a condenser pipe and the flow direction of a circulation pipe in an electrolyte volatilization recovery device. DETAILED DESCRIPTION

[0014] Reference Figure 1 The utility model proposes an electrolyte volatilization recovery device, comprising a shell 1, an induced draft fan 2, a condenser 3, a liquid storage tank 4, and a cooling assembly 5. The first outlet opened at the upper part of the shell 1 is connected to the air inlet of the induced draft fan 2, the air outlet of the induced draft fan 2 is connected to the inlet of the condenser 3, the outlet on the condenser 3 is connected to the storage box 4 for storing electrolyte, the exhaust port opened on the storage box 4 is connected to the air inlet opened at the lower part of the shell 1 through the circulation pipe 6, and the cooling assembly 5 is connected to the condenser 3 for cooling the condenser 3.

[0015] When in use, the induced draft fan 2 drives the gas inside the shell 1, including air, the inert gas filled in the shell 1 and the volatilized gaseous electrolyte to circulate along the condenser 3, the storage box 4, the circulation pipe 6 and the shell 1. When the volatilized gaseous electrolyte flows in the condenser 3, it condenses into liquid when it is cold and enters the storage box 4 through the outlet of the condenser 3, while the remaining gas returns to the shell 1 through the exhaust port of the storage box 4 and the circulation pipe 6 to circulate again, so that the inert gas used to prevent the electrode from catching fire can be recycled. At the same time, the cooled inert gas can also return to the shell 1 to appropriately reduce the temperature in the shell 1, so as to avoid the burning of the broken materials caused by excessive temperature in the shell 1.

[0016] In the above embodiment, the condenser 3 in the utility model is composed of a first cooling section and a second cooling section in the direction from the inlet to the outlet, wherein the circulation pipe 6 is connected to the first cooling section of the condenser 3, and the cooling assembly 5 is connected to the second cooling section of the condenser 2. Before the inert gas returns to the shell 1 through the circulation pipe 6, it first exchanges heat with the gas that has just entered the condenser 3, and pre-cools the gaseous electrolyte passing through the condenser 3, thereby improving the heat utilization in the device and improving the energy utilization rate.

[0017] In order to avoid heat transfer between the external high-temperature air and the condenser 3, the device further includes a heat preservation box 7, and the condenser 3 is located in the heat preservation box 7.

[0018] It should be further explained that the circulation pipe 6 is spirally wound around the first cooling section of the condenser tube 3, and the flow direction of the material flowing through the circulation pipe 6 is opposite to the flow direction of the material flowing through the condenser tube 3. Figure 2 .

[0019] In the above embodiment, the cooling assembly 5 includes a refrigerator 51 and a heat-conducting member 52 , and the heat-conducting member 52 is arranged between the refrigerator 51 and the second cooling section of the condenser tube 3 .

[0020] The refrigerator 51 may be a water cooler, and the heat conducting member 52 may be a cooling water pipe spirally wound on the second cooling section of the condenser tube 3, and the cooling water pipe is connected to the water cooler.

[0021] The refrigerator 51 and the heat-conducting member 52 may also adopt other solutions for cooling the condenser tube 3 .

[0022] In the above embodiments, the inert gas may escape to the outside when the shell 1 opens the feed port to feed or opens the discharge port to discharge, resulting in a decrease in the density of the inert gas in the shell 1 and affecting the stability. Therefore, in order to replenish the inert gas into the shell 1, the outlet of the circulation pipe 3 in the electrolyte volatilization recovery device proposed in the utility model is connected to the air inlet of the shell 1 through a three-way valve 8, the inlet of the three-way valve 8 is connected to the outlet of the circulation pipe 3, the first outlet of the three-way valve 8 is connected to the air inlet of the shell 1, and the second outlet is connected to the external inert gas negative pressure tank.

[0023] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes within the technical scope disclosed by the present invention according to the technical scheme and the utility model concept of the present invention, which should be covered by the protection scope of the present invention.

Claims

1. An electrolyte volatilization recovery device, characterized in that: The invention comprises a shell (1), an induced draft fan (2), a condenser (3), a liquid storage tank (4), and a cooling assembly (5); a first outlet provided at the upper portion of the shell (1) is connected to an air inlet of the induced draft fan (2); an air outlet of the induced draft fan (2) is connected to an inlet of the condenser (3); an outlet on the condenser (3) is connected to a liquid storage tank (4) for storing electrolyte; an exhaust port provided on the liquid storage tank (4) is connected to an air inlet provided at the lower portion of the shell (1) via a circulation pipe (6); and the cooling assembly (5) is connected to the condenser (3) for cooling the condenser (3).

2. The electrolyte volatilization recovery device according to claim 1, characterized in that: The outlet of the circulation pipeline (6) is connected to the air inlet of the shell (1) via a three-way valve (8), the inlet of the three-way valve (8) is connected to the outlet of the circulation pipeline (6), the first outlet of the three-way valve (8) is connected to the air inlet of the shell (1), and the second outlet is connected to an external inert gas negative pressure tank.

3. The electrolyte volatilization recovery device according to claim 1, characterized in that: The condenser (3) is composed of a first cooling section and a second cooling section in the direction from the inlet to the outlet, wherein the circulation pipe (6) is connected to the first cooling section of the condenser (3), and the cooling assembly (5) is connected to the second cooling section of the condenser (3).

4. The electrolyte volatilization recovery device according to claim 3, characterized in that: The circulation pipeline (6) is spirally wound on the first cooling section of the condenser tube (3), and the flow direction of the material flowing through the circulation pipeline (6) is opposite to the flow direction of the material flowing through the condenser tube (3).

5. The electrolyte volatilization recovery device according to claim 4, characterized in that: The cooling assembly (5) comprises a refrigerator (51) and a heat conductor (52), wherein the heat conductor (52) is arranged between the refrigerator (51) and the second cooling section of the condenser tube (3).

6. The electrolyte volatilization recovery device according to claim 5, characterized in that: It also includes a heat preservation box (7), and the condenser pipe (3) is located in the heat preservation box (7).

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