Temperature control device for battery diaphragm extraction

Abstract

The temperature control device is communicated with an extraction module used for extracting a battery diaphragm, the extraction module comprises at least one extraction tank used for containing extract liquor, and each extraction tank is provided with an outlet used for outputting the extract liquor and an inlet used for inputting the extract liquor. Each temperature control device comprises a temperature sensor mounted in the extraction tank, a first filter mounted at the inlet, a second filter mounted at the outlet, a magnetic pump communicated between the first filter and the second filter, and a condenser, and the temperature sensor is used for measuring the temperature of the extraction liquid in the corresponding extraction tank and is in signal connection with the condenser; the condenser comprises an inner circulation passage and an outer circulation passage which are independent from each other, the outlet, the second filter, the magnetic pump, the inner circulation passage, the first filter and the inlet are sequentially in fluid communication to form an inner circulation loop, and the outer circulation passage is in fluid communication with a cooling water source. The temperature of the extraction liquid is effectively controlled, the extraction liquid is saved, and the extraction efficiency of the extraction module is improved.

Description

Technical Field

[0001] The present application relates to the technical field of lithium battery diaphragm production equipment, and in particular to a temperature control device for battery diaphragm extraction. Background Art

[0002] When the battery diaphragm is extracted, the extraction tank is filled with an extraction liquid used for extraction. The extraction liquid is generally dichloromethane. Since dichloromethane is volatile, the temperature of the extraction liquid in the extraction tank needs to be controlled to avoid the effects of the volatilization of the extraction liquid and uneven temperature on the extraction of the battery diaphragm. Summary of the invention

[0003] In order to solve the above-mentioned technical problems, the purpose of this application is to provide a temperature control device for battery diaphragm extraction.

[0004] To achieve the above-mentioned purpose, the present application adopts the following technical scheme: a temperature control device for battery diaphragm extraction, connected to an extraction module for extracting the battery diaphragm, the extraction module comprising at least one extraction tank for holding an extract, each of the extraction tanks being provided with an outlet for outputting the extract and an inlet for inputting the extract, the temperature control device comprising a temperature sensor installed in the extraction tank, a first filter installed at the inlet, a second filter installed at the outlet, a magnetic pump connected between the first filter and the second filter, and a condenser, the temperature sensor being used to measure the temperature of the extract in the corresponding extraction tank and being connected to the condenser signal, the condenser comprising an internal circulation passage and an external circulation passage independent of each other, the outlet, the second filter, the magnetic pump, the internal circulation passage, the first filter and the inlet being fluidically connected in sequence to form an internal circulation loop, and the external circulation passage being fluidically connected to a cooling water source.

[0005] In the above technical solution, it is further preferred that the condenser is a plate condenser.

[0006] In the above technical solution, it is further preferred that a check valve is provided between the magnetic pump and the internal circulation passage.

[0007] Compared with the prior art, the present invention has the following beneficial effects:

[0008] The temperature control device of the present application monitors the temperature of the extraction liquid in the extraction tank in real time, and effectively controls the temperature of the extraction liquid through the internal circulation of the extraction liquid and the external circulation of cooling water, ensuring that the extraction liquid is in a temperature range that is not easy to volatilize, saving the extraction liquid and improving the extraction efficiency of the extraction module. BRIEF DESCRIPTION OF THE DRAWINGS

[0009] Figure 1A schematic diagram of the structure of a temperature control device provided in an embodiment of the present application.

[0010] Figure 2 for Figure 1 Working principle diagram of the connection between the temperature control device and the extraction tank.

[0011] Wherein: 10, extraction tank; 1, outlet; 2, inlet; 20, temperature control device; 3, temperature sensor; 4, first filter; 5, second filter; 6, magnetic pump; 7, condenser; 8, check valve. DETAILED DESCRIPTION

[0012] To describe the technical content, structural features, achieved purpose and effect of the application in detail, the technical solutions in the embodiments of the application will be described below in conjunction with the drawings in the embodiments of the application. Obviously, the described embodiments are only a part of the embodiments of the application, rather than all of the embodiments. In the following description, for the purpose of explanation, many specific details are set forth to provide a detailed description of various exemplary embodiments or implementations of the invention. However, various exemplary embodiments may also be implemented without these specific details or in the case of one or more equivalent arrangements. In addition, various exemplary embodiments may be different, but not necessarily exclusive. For example, without departing from the inventive concept, the specific shape, structure and characteristics of the exemplary embodiment may be used or implemented in another exemplary embodiment.

[0013] An embodiment of the present application provides a temperature control device for extracting battery diaphragms. The temperature control device is connected to an extraction module for extracting battery diaphragms. The extraction module includes a plurality of extraction tanks for containing extraction liquid. The temperature control device is used to adjust the temperature of the extraction liquid in each extraction tank to ensure that the temperature in the extraction tank is stably maintained within a temperature range, reduce the volatilization of the extraction liquid, and ensure the purity of the extraction liquid in the extraction tank.

[0014] like Figure 2 As shown, each extraction tank 10 is provided with an outlet 1 for outputting the extract and an inlet 2 for inputting the extract. The temperature control device 20 is fluidly connected with the inlet 2 and the outlet 1, and forms an internal circulation with the extract in the extraction tank 10 through the inlet 2 and the outlet 1, so as to ensure that the temperature of the extract inside the extraction tank 10 is constant.

[0015] like Figure 1 , 2As shown, the temperature control device 20 includes a temperature sensor 3 installed in the extraction tank 10, a first filter 4 installed at the inlet 2, a second filter 5 installed at the outlet 1, a magnetic pump 6 and a condenser 7 connected between the first filter 4 and the second filter 5, the condenser 7 includes an internal circulation path and an external circulation path independent of each other, the outlet 1, the second filter 5, the magnetic pump 6, the internal circulation path, the first filter 4 and the inlet 2 are fluidly connected in sequence to form an internal circulation loop, the magnetic pump 6 provides power for the extract transported in the internal circulation loop, so that the extract in the extraction tank 10 is output from the outlet 1, and after being cooled by the condenser 7, it is re-input into the extraction tank 10 from the inlet 2 to realize the internal circulation; the magnetic pump 6 has good corrosion resistance, which effectively prevents the extract transported by the magnetic pump 6 from being contaminated. The first filter 4 and the second filter 5 filter the extract at the inlet 2 and the outlet 1 respectively. The first filter 4 filters the extract upstream of the magnetic pump 6 to prevent impurities from entering the magnetic pump 6, thereby avoiding the performance of the magnetic pump 6 being affected by the impurities and extending the service life of the magnetic pump 6. The second filter 5 is located downstream of the magnetic pump 6 and is used to filter the extract circulated back into the extraction tank 10 to ensure the purity of the extract entering the extraction tank 10.

[0016] like Figure 2 As shown, the outer circulation passage is connected to the cooling water source fluid, and the cooling water transported in the outer circulation passage and the extract transported in the inner circulation passage perform heat exchange in the condenser 7, and the cooling water takes away the heat in the extract, so as to cool the extract circulated back to the extraction tank 10, thereby ensuring that the temperature of the extract in the extraction tank 10 is constant and reducing the volatilization amount of the extract. In the present application, the outer circulation passages of the temperature control devices of multiple extraction tanks are connected to the same cooling water source fluid.

[0017] A check valve 8 is provided between the magnetic pump 6 and the internal circulation passage of the condenser 7 to prevent the backflow of the extracting liquid from affecting the performance of the magnetic pump 6 .

[0018] The temperature sensor 3 is connected to the condenser 7 signal. The temperature sensor 3 is used to measure the temperature of the extract in the corresponding extraction tank 10. The temperature sensor 3 transmits the detection result signal to the condenser 7. The condenser 7 controls the flow rate of cooling water in the external circulation path based on the detection result to quickly reduce the temperature of the extract in the internal circulation path to the required temperature.

[0019] In the embodiment of the present application, the condenser 7 is a plate condenser, which has high cooling efficiency and can reduce the temperature of the extract to the required range in time to avoid excessive volatilization of the extract.

[0020] The temperature control device of the present application monitors the temperature of the extraction liquid in the extraction tank in real time, and effectively controls the temperature of the extraction liquid through the internal circulation of the extraction liquid and the external circulation of cooling water, ensuring that the extraction liquid is in a temperature range that is not easy to volatilize, saving the extraction liquid and improving the extraction efficiency of the extraction module.

[0021] The above shows and describes the basic principles, main features and advantages of the present application. Those skilled in the art should understand that the present application is not limited by the above embodiments, and the above embodiments and descriptions are only for explaining the principles of the present application. Without departing from the spirit and scope of the present application, the present application may have various changes and improvements, and the scope of protection required by the present application is defined by the attached claims, description and their equivalents.

Claims

1. A temperature control device for battery diaphragm extraction, connected to an extraction module for extracting the battery diaphragm, wherein the extraction module comprises at least one extraction tank for containing an extraction liquid, characterized in that: Each of the extraction tanks is provided with an outlet for outputting the extract and an inlet for inputting the extract. The temperature control device comprises a temperature sensor installed in the extraction tank, a first filter installed at the inlet, a second filter installed at the outlet, a magnetic pump connected between the first filter and the second filter, and a condenser. The temperature sensor is used to measure the temperature of the extract in the corresponding extraction tank and is connected to the condenser signal. The condenser comprises an internal circulation passage and an external circulation passage that are independent of each other. The outlet, the second filter, the magnetic pump, the internal circulation passage, the first filter and the inlet are fluidically connected in sequence to form an internal circulation loop. The external circulation passage is fluidically connected to a cooling water source.

2. The temperature control device according to claim 1, characterized in that: The condenser is a plate condenser.

3. The temperature control device according to claim 1, characterized in that: A check valve is arranged between the magnetic pump and the inner circulation passage.

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