Electrolyte pretreatment system and electrolyte pretreatment cabinet

Abstract

The utility model discloses an electrolyte pretreatment system and an electrolyte pretreatment cabinet, and the electrolyte pretreatment system comprises an electrolyte circulation system which comprises an electrolyte inlet, an electrolyte outlet and an electrolyte pipeline, and the electrolyte pipeline is provided with a filtering module, a cooling module and a power circulation module; the cold water circulation system comprises a cold water inlet, a cold water outlet and a cold water pipeline, and the cold water inlet and the cold water outlet are connected with an outer circulation cooling module; and at least part of the cold water pipeline flows through the cooling module and is used for exchanging heat for the cooling module, so that the cooling module cools the electrolyte in the electrolyte pipeline. The electrolyte circulating system and the cold water circulating system are integrated, impurities in the electrolyte are removed through the filtering module, the cooling module is combined with the outer circulating cooling module, accurate control over the temperature of the electrolyte is achieved, meanwhile, the power circulating module guarantees continuous and uniform flowing of the electrolyte, and the service life of the electrolyte is prolonged. And the efficiency and the stability of the whole pretreatment process are improved.

Description

Technical Field

[0001] The utility model relates to the technical field related to electrolysis pretreatment, and in particular to an electrolyte pretreatment system and an electrolyte pretreatment cabinet. Background Art

[0002] In the electrochemical industry, electrolyte temperature and purity are crucial factors influencing the efficiency of the electrolysis process, product quality, and stable equipment operation. Traditionally, electrolytes are directly injected into the electrolytic cell for electrolysis, neglecting necessary pretreatment, such as temperature control and impurity filtration. This results in excessively high electrolyte temperatures during the electrolysis process, accelerating electrode corrosion, reducing electrolysis efficiency, and even leading to safety incidents. Furthermore, impurities in the electrolyte can deposit on the electrode surface, hindering the electrochemical reaction and reducing product purity and yield.

[0003] To overcome these challenges, several electrolyte pretreatment systems have emerged in the prior art. However, most suffer from complex structures, high energy consumption, and difficult maintenance. In particular, some systems employ natural or intermittent cooling, which prevents precise and continuous control of electrolyte temperature. This results in significant fluctuations during the electrolysis process, impacting product quality. Utility Model Content

[0004] To overcome at least one of the above-mentioned drawbacks of the prior art, the present invention provides an electrolyte pretreatment system and electrolyte pretreatment cabinet. These systems address issues such as poor electrolyte pretreatment results, high energy consumption, and difficult maintenance, providing a compact, easy-to-operate, and high-performance electrolyte pretreatment solution.

[0005] The technical solution adopted by the present invention to solve the problem is:

[0006] An electrolyte pretreatment system comprises: an electrolyte circulation system, the electrolyte circulation system comprising an electrolyte inlet, an electrolyte outlet and an electrolyte pipeline, the electrolyte inlet and the electrolyte outlet are used to communicate with an electrolytic cell, and the electrolyte pipeline is provided with a filtration module, a cooling module and a power circulation module; a cold water circulation system, the cold water circulation system comprising a cold water inlet, a cold water outlet and a cold water pipeline, the cold water inlet and the cold water outlet are connected to an external circulation cooling module; wherein, at least a portion of the cold water pipeline flows through the cooling module for heat exchange for the cooling module, so that the cooling module cools the electrolyte in the electrolyte pipeline.

[0007] By adopting the above solution, the electrolyte circulation system and the cold water circulation system are integrated, the filtration module is used to remove impurities in the electrolyte, and the cooling module is combined with the external circulation cooling module to achieve precise control of the electrolyte temperature. At the same time, the power circulation module ensures the continuous and uniform flow of the electrolyte, thereby improving the efficiency and stability of the entire pretreatment process.

[0008] Furthermore, the power circulation module is also connected to an electrolyte replenishing module for replenishing electrolyte into the electrolyte pipeline.

[0009] By adopting the above solution, the electrolyte level and appropriate concentration in the electrolytic cell are maintained constant by timely replenishing new liquid, thereby ensuring the continuity and stability of the electrolysis process; the automated replenishment mechanism reduces the operator's manual operation frequency, reduces labor intensity, and improves work efficiency.

[0010] Furthermore, the electrolyte replenishment module includes an electrolyte storage tank and an electronic pump, and the electronic pump is used to transport the electrolyte in the electrolyte storage tank to the power circulation module.

[0011] By adopting this solution, the electronic pump achieves precise flow control and stable pressure output. It automatically adjusts pumping speed based on system requirements, ensuring smooth and accurate delivery of electrolyte to the electrolyte pipeline. Furthermore, the electronic pump offers advantages such as low noise, low power consumption, and a long lifespan, reducing system operating costs and maintenance.

[0012] Furthermore, the filter module includes an electrolyte filter, the electrolyte filter includes a filter inlet, a filter outlet and a filter element, the filter element is located between the filter inlet and the filter outlet, and the filter inlet and the filter outlet are connected to the electrolyte pipeline.

[0013] By adopting the above solution, impurities in the electrolyte, such as solid particles and suspended matter, can be removed to ensure the cleanliness of the electrolyte; when the electrolyte enters the filter element through the filter inlet, the impurities are intercepted by the filter element and adsorbed on its surface or inside, while the clean electrolyte flows out of the filter outlet through the tiny pores of the filter element and re-enters the electrolyte pipeline for circulation.

[0014] Furthermore, a filter bracket is provided below the electrolyte filter, and the filter bracket is detachably connected to the electrolyte filter.

[0015] By adopting the above solution, the main function of the filter bracket is to provide a stable support platform to ensure that the electrolyte filter remains level and stable during installation, and to prevent displacement or tipping due to vibration or external force.

[0016] Furthermore, the cooling module includes a heat exchanger, which includes a first heat exchange space for accommodating electrolyte and a second heat exchange space for accommodating cold water, and a heat exchange medium is filled between the first heat exchange space and the second heat exchange space.

[0017] With this solution, as the electrolyte and cold water flow through the first and second heat exchange spaces, respectively, heat is exchanged between them via the heat exchange medium. Heat from the electrolyte is transferred to the heat exchange medium, which then transfers heat to the cold water, thereby cooling the electrolyte.

[0018] Furthermore, the power circulation module includes at least one group of circulation pipelines, which include a circulation pump and a control valve. When multiple groups of circulation pipelines are provided, each group of power circulation modules is connected in parallel and connected between the electrolyte inlet and the first heat exchange space.

[0019] By adopting this approach, when the system needs to process large quantities of electrolyte or requires higher circulation efficiency, the power circulation module can be designed to include multiple sets of circulation lines. Each set of circulation lines is equipped with an independent circulation pump and control valve and connected in parallel between the electrolyte inlet and the first heat exchange space. This design improves system flexibility and scalability while achieving uniform electrolyte distribution and efficient circulation.

[0020] Furthermore, the first heat exchange space has a first inlet and a first outlet, the first inlet is connected to the circulation pipeline, and the first outlet is connected to the filter module; the second heat exchange space has a second inlet and a second outlet, the second inlet is connected to the cold water inlet, and the second outlet is connected to the cold water outlet.

[0021] By adopting the above solution, a complete heat exchange effect can be achieved, and the pipeline connection is clear, the integration is convenient, and the space occupancy rate is improved.

[0022] Furthermore, the external circulation cooling module includes a circulating water pump and a cold water source. The circulating water pump is used to transport cold water in the cold water source to the cold water inlet. The temperature of the cold water source is 45°C-55°C.

[0023] By adopting the above solution, the circulating water pump is responsible for extracting cold water from the cold water source and transporting it to the cold water inlet of the cooling module through the pipeline system. The cold water with a temperature range of 45℃-55℃ can effectively absorb the heat released by the electrolyte.

[0024] An electrolyte pretreatment cabinet comprises a shell and an electrolyte pretreatment system located in the shell.

[0025] By adopting the above solution, multiple functions such as filtration, cooling and circulation are integrated into the cabinet. Through reasonable system design and module configuration, comprehensive pretreatment and efficient utilization of the electrolyte can be achieved.

[0026] In summary, the electrolyte pretreatment system and electrolyte pretreatment cabinet provided by the present invention have the following technical effects:

[0027] 1. Through the combination of the external circulation cooling module and the cooling module, the system can achieve precise and continuous control of the electrolyte temperature. This avoids the problem of accelerated electrode corrosion due to excessive electrolyte temperature, thereby improving electrolysis efficiency and reducing electrode loss;

[0028] 2. The setting of the filtration module effectively removes impurities and particulate matter in the electrolyte, prevents the deposition of impurities on the electrode surface, ensures the smooth progress of the electrochemical reaction, and thus improves the purity and yield of the product;

[0029] 3. The electrolyte circulation system and the cold water circulation system are cleverly combined to form a compact and integrated electrolyte pretreatment system. This design not only saves space, but also simplifies the operation process and reduces the difficulty of operation;

[0030] 4. Use external circulation cooling module to provide a stable cold water source for the cooling module, and achieve rapid cooling of the electrolyte through heat exchange. This cooling method is not only highly efficient but also saves energy consumption;

[0031] 5. By pre-treating the electrolyte, the system can ensure the stability and consistency of the electrolyte during the electrolysis process, thereby reducing equipment failure and downtime caused by electrolyte problems. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] Figure 1 This is a front structural diagram of an embodiment of the utility model;

[0033] Figure 2 This is a schematic diagram of the top structure of an embodiment of the utility model;

[0034] Figure 3 This is a schematic diagram of the module connection structure of an embodiment of the present utility model.

[0035] The reference numerals have the following meanings: 1. electrolyte circulation system; 11. electrolyte inlet; 12. electrolyte outlet; 13. electrolyte pipeline; 2. filter module; 21. electrolyte filter; 22. filter inlet; 23. filter outlet; 24. filter element; 25. filter bracket; 3. cooling module; 31. heat exchanger; 311. first heat exchange space; 312. second heat exchange space; 313. heat exchange medium; 32. first inlet; 33. First outlet; 34. Second inlet; 35. Second outlet; 4. Power circulation module; 41. Circulation pipeline; 411. Circulation pump; 412. Control valve; 5. Cold water circulation system; 51. Cold water inlet; 52. Cold water outlet; 53. Cold water pipeline; 6. External circulation cooling module; 61. Circulation water pump; 62. Cold water source; 7. Electrolyte replenishment module; 71. Electrolyte storage tank; 72. Electronic pump; 8. Shell; 9. Electrolyzer. DETAILED DESCRIPTION

[0036] For better understanding and implementation, the technical solutions in the embodiments of the present invention will be clearly and completely described and discussed below in conjunction with the drawings of the present invention. Obviously, what is described here is only a part of the examples of the present invention, not all the examples. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention.

[0037] In order to facilitate the understanding of the embodiments of the present invention, the following will be further explained with reference to specific embodiments as examples in conjunction with the drawings, and each embodiment does not constitute a limitation on the embodiments of the present invention.

[0038] In the description of the present invention, it should be noted that the terms "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating directions or positional relationships, are based on the directions or positional relationships shown in the accompanying drawings. They are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction. Therefore, they cannot be understood as limiting the present invention.

[0039] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those commonly understood by those skilled in the art in the art of the present invention. The terms used herein in the specification of the present invention are only for the purpose of describing specific embodiments and are not intended to limit the present invention.

[0040] Example 1 of the present utility model is shown in FIG. Figure 1-Figure 3As shown, an electrolyte pretreatment system is disclosed, including an electrolyte circulation system 1 and the cold water circulation system 5, the electrolyte circulation system 1 includes an electrolyte inlet 11, an electrolyte outlet 12 and an electrolyte pipeline 13, the electrolyte inlet 11 and the electrolyte outlet 12 are both located at one end of the system for connecting to the electrolytic cell 9, and the electrolyte pipeline 13 is provided with a filter module 2, a cooling module 3 and a power circulation module 4; the cold water circulation system 5 includes a cold water inlet 51, a cold water outlet 52 and a cold water pipeline 53, the cold water inlet 51 and the cold water outlet 52 are located at the system end. The other end of the system is used to connect to the external circulation cooling module 6. The cold water pipe 53 at least partially flows through the cooling module 3 for heat exchange for the cooling module 3, so that the cooling module 3 cools the electrolyte in the electrolyte pipe 13. By integrating the electrolyte circulation system 1 and the cold water circulation system 5, the filter module 2 is used to remove impurities in the electrolyte. The cooling module 3 is combined with the external circulation cooling module 6 to achieve precise control of the electrolyte temperature. At the same time, the power circulation module 4 ensures the continuous and uniform flow of the electrolyte, thereby improving the efficiency and stability of the entire pretreatment process.

[0041] The utility model also relates to an electrolyte pretreatment cabinet, comprising a shell 8 and an electrolyte pretreatment system located in the shell 8. By integrating multiple functions such as filtration, cooling and circulation into the cabinet, and through reasonable system design and module configuration, comprehensive pretreatment and efficient utilization of the electrolyte can be achieved.

[0042] In a specific embodiment, the filter module 2 includes an electrolyte filter 21, and the electrolyte filter 21 includes a filter inlet 22, a filter outlet 23 and a filter element 24. The filter element 24 is located between the filter inlet 22 and the filter outlet 23, and the filter inlet 22 and the filter outlet 23 are connected to the electrolyte pipe 13. The electrolyte filter 21 is equipped with a high-precision filter element 24 for removing impurities in the electrolyte. Impurities in the electrolyte, such as solid particles and suspended matter, can be removed to ensure the cleanliness of the electrolyte. A detachable filter bracket 25 is provided at the bottom of the electrolyte filter 21. The main function of the filter bracket 25 is to provide a stable support platform to ensure that the electrolyte filter 21 remains level and stable during installation, and to prevent displacement or tipping due to vibration or external force. In this embodiment 1, the filter bracket 25 is fixed to the bottom of the housing to provide a stable support effect for the electrolyte filter 21.

[0043] In a specific embodiment, the cooling module 3 includes a heat exchanger 31, which includes a first heat exchange space 311 for accommodating electrolyte and a second heat exchange space 312 for accommodating cold water. The first heat exchange space 311 has a first inlet 32 ​​and a first outlet 33. The first inlet 32 ​​communicates with the circulation pipeline 41, and the first outlet 33 communicates with the filter module 2. The second heat exchange space 312 has a second inlet 34 and a second outlet 35. The second inlet 34 communicates with the cold water inlet 51, and the second outlet 35 communicates with the cold water outlet 52. A heat exchange medium 313 is filled between the first heat exchange space 311 and the second heat exchange space 312. When the electrolyte and the cold water flow through the first heat exchange space 311 and the second heat exchange space 312, respectively, heat is exchanged between them through the heat exchange medium 313. The heat of the electrolyte is transferred to the heat exchange medium 313, which then transfers the heat to the cold water, thereby cooling the electrolyte. Optionally, the first heat exchange space 311 and the second heat exchange space 312 may be two spirally wound pipes, with a heat exchange medium 313 filled between them to increase the heat exchange area. Alternatively, the first heat exchange space 311 and the second heat exchange space 312 may also be a pipe-in-pipe structure, with the heat exchange medium 313 filled between the two pipes. In other embodiments, the specific structures of the first heat exchange space 311 and the second heat exchange space 312 are not limited, as long as they can achieve heat exchange between them.

[0044] The specific operating steps are as follows: when the electrolyte is pumped to the first heat exchange space 311 through the power circulation module 4, it exchanges heat with the heat exchange medium 313. During this process, the heat of the electrolyte is transferred to the heat exchange medium 313, thereby reducing its temperature. Simultaneously, in the second heat exchange space 312, cold water enters through the second inlet 34 and absorbs heat from the first heat exchange space 311, before flowing out through the second outlet 35. This forms a complete heat exchange cycle, achieving electrolyte cooling and reuse of the cooling medium.

[0045] In some embodiments, the power circulation module 4 includes at least one group of circulation pipelines 41, and the circulation pipelines 41 include a circulation pump 411 and a control valve 412. When there are multiple groups of circulation pipelines 41, each group of power circulation modules 4 is connected in parallel and connected between the electrolyte inlet 11 and the first heat exchange space 311. When the system needs to process a large amount of electrolyte or requires higher circulation efficiency, the power circulation module 4 can be designed to include multiple groups of circulation pipelines 41. Each group of circulation pipelines 41 is equipped with an independent circulation pump 411 and a control valve 412, and is connected in parallel between the electrolyte inlet 11 and the first heat exchange space 311. This design can improve the flexibility and scalability of the system, while achieving uniform distribution and efficient circulation of the electrolyte. Optionally, a pH adjustment unit and a degassing unit can also be set in the circulation pipeline 41 to achieve the target pH value of the electrolyte.

[0046] In order to prevent the concentration of the electrolyte or the solution from gradually decreasing and failing to reach a circulation state, in some embodiments, the power circulation module 4 is further connected to an electrolyte replenishing module 7, which is used to replenish the electrolyte in the electrolyte pipeline 13. By timely replenishing new liquid, the electrolyte is maintained at a constant liquid level and appropriate concentration in the electrolytic cell 9, thereby ensuring the continuity and stability of the electrolysis process; the automated replenishing mechanism reduces the operator's manual operation frequency, reduces labor intensity, and improves work efficiency. In this embodiment 1, the electrolyte replenishing module 7 includes an electrolyte storage tank 71 and an electronic pump 72, and the electronic pump 72 is used to transport the electrolyte in the electrolyte storage tank 71 to the power circulation module 4; optionally, a pump body bracket is provided at the bottom of the electronic pump 72, and the pump body bracket is used to fix and form the electronic pump 72, and the pump body bracket is fixed to the bottom of the shell to improve operational stability. Optionally, the electrolyte replenishment module 7 is also connected to a control system. The control system obtains the concentration and liquid level parameters of the electrolyte by setting a detection module in the pipeline. The control system calculates the amount of electrolyte that needs to be replenished and controls the electronic pump 72 to start. The electronic pump 72 pumps the electrolyte in the electrolyte storage tank 71 to the power circulation module 4. Through the push of the power circulation module 4, the electrolyte is reintroduced into the electrolyte circulation system 1 to complete the replenishment process. During the replenishment process, the control system will continuously monitor relevant parameters to ensure the accuracy and stability of the replenishment. The electronic pump 72 has precise flow control and stable pressure output capabilities, and can automatically adjust the pumping speed according to the needs of the system to ensure that the electrolyte can be smoothly and accurately transported to the electrolyte pipeline 13.

[0047] In some embodiments, the external circulation cooling module 6 includes a circulating water pump 61 and a cold water source 62. The circulating water pump 61 is used to transport the cold water in the cold water source 62 to the cold water inlet 51. The temperature of the cold water source 62 is 45°C-55°C, preferably 50°C. The circulating water pump 61 is responsible for extracting the cold water from the cold water source 62 and transporting it to the cold water inlet 51 of the cooling module 3 through the pipeline system. Cold water with a temperature range of 45°C-55°C can effectively absorb the heat released by the electrolyte. Optionally, the cold water source 62 can be groundwater, cooling tower water, industrial circulating water, etc., depending on the actual situation of the system and available resources. It is sufficient to achieve a heat exchange effect.

[0048] The working steps of the external circulation cooling module 6 are as follows: in the electrolyte pretreatment system, when the electrolyte is transported to the cooling module 3 through the power circulation module 4, it first enters the first heat exchange space 311 to exchange heat with the heat exchange medium 313. At the same time, the circulating water pump 61 in the external circulation cooling module 6 starts working, extracts the cold water from the cold water source 62 and transports it to the cold water inlet 51 of the cooling module 3 through the pipeline system. After the cold water enters the second heat exchange space 312, it exchanges heat with the heat exchange medium 313 in the first heat exchange space 311, absorbs the heat of the electrolyte and heats up. Then, the heated hot water flows out of the cooling module 3 through the cold water outlet 52, and may return to the cold water source 62 for re-cooling treatment or be discharged into other treatment systems. In this way, a closed external circulation cooling system is formed, which provides stable cooling support for the electrolyte pretreatment system.

[0049] The working steps of the entire system include the following two types: the first is that the electrolyte is discharged from the electrolytic cell 9 and enters the filter module 2 for impurity removal. The filtered electrolyte enters the first heat exchange space 311 of the cooling module 3 and exchanges heat with the heat exchange medium 313 to reduce the temperature. At the same time, the circulating water pump 61 transports the cold water in the cold water source 62 to the second heat exchange space 312 for heating. The heated hot water is discharged through the cold water outlet 52 for replacement or cooling. The cooled electrolyte continues to flow through the circulation pipeline 41 of the power circulation module 4 and finally flows to the electrode tank. The second is that the electrolyte is discharged from the electrolytic cell 9 and enters the circulation pipeline 41 of the power circulation module 4, then flows through the first heat exchange space 311 for heat exchange, and then removes impurities from the filter module 2, and finally flows back to the electrolytic cell 9.

[0050] In summary, the electrolyte pretreatment system and electrolyte pretreatment cabinet provided by the present invention have the following technical effects:

[0051] 1. Through the combination of the external circulation cooling module 6 and the cooling module 3, the system can achieve precise and continuous control of the electrolyte temperature. This avoids the problem of accelerated electrode corrosion due to excessively high electrolyte temperature, thereby improving electrolysis efficiency and reducing electrode loss;

[0052] 2. The setting of the filter module 2 effectively removes impurities and particulate matter in the electrolyte, prevents the deposition of impurities on the electrode surface, ensures the smooth progress of the electrochemical reaction, and thus improves the purity and yield of the product;

[0053] 3. The electrolyte circulation system 1 and the cold water circulation system 5 are cleverly combined to form a compact, integrated electrolyte pretreatment system. This design not only saves space, but also simplifies the operation process and reduces the difficulty of operation;

[0054] 4. Use the external circulation cooling module 6 to provide a stable cold water source 62 for the cooling module 3, and achieve rapid cooling of the electrolyte through heat exchange. This cooling method is not only highly efficient but also saves energy consumption;

[0055] 5. By pre-treating the electrolyte, the system can ensure the stability and consistency of the electrolyte during the electrolysis process, thereby reducing equipment failure and downtime caused by electrolyte problems.

[0056] The technical means disclosed in the present invention are not limited to those disclosed in the above-mentioned embodiments, but also include technical solutions composed of any combination of the above-mentioned technical features. It should be noted that those skilled in the art can make various improvements and modifications without departing from the principles of the present invention, and such improvements and modifications are also considered to be within the scope of protection of the present invention.

Claims

1. An electrolyte pretreatment system, characterized in that: include: An electrolyte circulation system (1), the electrolyte circulation system (1) comprising an electrolyte inlet (11), an electrolyte outlet (12) and an electrolyte pipeline (13), the electrolyte inlet (11) and the electrolyte outlet (12) being used to communicate with an electrolytic cell (9), and the electrolyte pipeline (13) being provided with a filter module (2), a cooling module (3) and a power circulation module (4); A cold water circulation system (5), the cold water circulation system (5) comprising a cold water inlet (51), a cold water outlet (52) and a cold water pipe (53), the cold water inlet (51) and the cold water outlet (52) being connected to an external circulation cooling module (6); The cold water pipe (53) at least partially flows through the cooling module (3) and is used to exchange heat for the cooling module (3), so that the cooling module (3) cools the electrolyte in the electrolyte pipe (13).

2. The electrolyte pretreatment system according to claim 1, characterized in that: The power circulation module (4) is also connected to an electrolyte replenishing module (7) for replenishing electrolyte in the electrolyte pipeline (13).

3. An electrolyte pretreatment system according to claim 2, characterized in that: The electrolyte replenishment module (7) comprises an electrolyte storage tank (71) and an electronic pump (72), and the electronic pump (72) is used to transport the electrolyte in the electrolyte storage tank (71) to the power circulation module (4).

4. The electrolyte pretreatment system according to claim 1, characterized in that: The filter module (2) comprises an electrolyte filter (21), the electrolyte filter (21) comprises a filter inlet (22), a filter outlet (23) and a filter element (24), the filter element (24) is located between the filter inlet (22) and the filter outlet (23), and the filter inlet (22) and the filter outlet (23) are connected to the electrolyte pipeline (13).

5. An electrolyte pretreatment system according to claim 4, characterized in that: A filter bracket (25) is further provided below the electrolyte filter (21), and the filter bracket (25) is detachably connected to the electrolyte filter (21).

6. The electrolyte pretreatment system according to claim 1, characterized in that: The cooling module (3) comprises a heat exchanger (31), the heat exchanger (31) comprising a first heat exchange space (311) for accommodating electrolyte and a second heat exchange space (312) for accommodating cold water, and a heat exchange medium (313) is filled between the first heat exchange space (311) and the second heat exchange space (312).

7. An electrolyte pretreatment system according to claim 6, characterized in that: The power circulation module (4) includes at least one group of circulation pipelines (41), and the circulation pipelines (41) include a circulation pump (411) and a control valve (412). When multiple groups of circulation pipelines (41) are provided, each group of power circulation modules (4) is connected in parallel and connected between the electrolyte inlet (11) and the first heat exchange space (311).

8. An electrolyte pretreatment system according to claim 7, characterized in that: The first heat exchange space (311) has a first inlet (32) and a first outlet (33), the first inlet (32) is connected to the circulation pipeline (41), and the first outlet (33) is connected to the filter module (2); the second heat exchange space (312) has a second inlet (34) and a second outlet (35), the second inlet (34) is connected to the cold water inlet (51), and the second outlet (35) is connected to the cold water outlet (52).

9. The electrolyte pretreatment system according to claim 1, characterized in that: The external circulation cooling module (6) comprises a circulating water pump (61) and a cold water source (62). The circulating water pump (61) is used to transport cold water in the cold water source (62) to the cold water inlet (51). The temperature of the cold water source (62) is 45°C-55°C.

10. An electrolyte pretreatment cabinet, characterized in that: The invention comprises a shell (8) and an electrolyte pretreatment system according to any one of claims 1 to 9 located in the shell (8).

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