Flow battery system and electrolyte simultaneous cooling device

Abstract

The utility model discloses a kind of liquid flow battery system and electrolyte synchronous cooling device, wherein, electrolyte synchronous cooling device includes: at least one group of heat exchange cavity group, the heat exchange cavity group includes the positive electrode heat exchange cavity, cooling circulation cavity and negative electrode heat exchange cavity that are sequentially closely arranged to realize heat transfer;First circulating pump on the circulating pipeline connected between positive electrode heat exchange cavity and positive electrode tank, for realizing positive electrode electrolyte circulation flow;Second circulating pump on the circulating pipeline connected between negative electrode heat exchange cavity and negative electrode tank, for realizing negative electrode electrolyte circulation flow;And, circulating cooling unit connected to cooling circulation cavity, for realizing cooling medium circulation flow.It can be designed according to need by the plate cavity room structure design of side by side, and the cavity structure is big, greatly reduces flow resistance in circulation process, so the efficacy of first circulating pump and second circulating pump is relatively lower, to improve energy storage effect, and greatly improve the stability of heat exchange.

Description

Technical Field

[0001] This utility model relates to the field of flow battery technology, and in particular to a flow battery system and a synchronous cooling device for electrolyte. Background Technology

[0002] Existing flow batteries use tubular heat exchangers made of non-conductive materials with low heat transfer coefficients, such as PTFE, PFA, or plastics. To increase the heat exchange area and meet heat exchange requirements, hundreds of thin tubes are often used, arranged in a spiral pattern to increase the heat exchange residence time. In practical applications, this results in drawbacks such as poor heat exchange performance, high resistance, significant pressure drop, increased pump consumption, and reduced system energy output.

[0003] In engineering practice, pipeline heat exchange is the primary method, meaning heat exchangers are installed on the pipelines before the fuel cell stack. However, even with heat exchangers installed on both the positive and negative electrode pipelines, pressure imbalances can occur due to variations in the internal resistance of different heat exchangers. Furthermore, the additional internal resistance caused by the pipeline heat exchangers leads to a significant pressure drop. When high flow rates and high head are required, the increased resistance from the heat exchangers greatly increases pump power consumption, thereby reducing energy storage efficiency. Utility Model Content

[0004] In order to overcome the shortcomings of the prior art, the purpose of this utility model is to provide a flow battery system and an electrolyte synchronous cooling device, which has the advantages of improving heat exchange effect and reducing pipeline resistance.

[0005] The objective of this utility model is achieved through the following technical solution:

[0006] According to a first aspect of the present disclosure, an electrolyte synchronous cooling device is provided, comprising:

[0007] At least one heat exchange chamber group, the heat exchange chamber group including a positive electrode heat exchange chamber, a cooling circulation chamber and a negative electrode heat exchange chamber arranged in close proximity to each other to realize heat transfer, the positive electrode heat exchange chamber is connected to the positive electrode tank to realize the circulation and convergence of the positive electrode electrolyte, the negative electrode heat exchange chamber is connected to the negative electrode tank to realize the circulation and convergence of the negative electrode electrolyte, and the cooling circulation chamber is used to realize the circulation and convergence of the cooling medium;

[0008] A first circulation pump on the circulation pipeline connected between the positive electrode heat exchange chamber and the positive electrode tank is used to realize the circulation flow of the positive electrode electrolyte;

[0009] A second circulation pump connected to the circulation pipeline between the negative electrode heat exchange chamber and the negative electrode tank is used to realize the circulation flow of the negative electrode electrolyte; and

[0010] A circulating cooling unit connected to the cooling circulation chamber is used to realize the circulation of cooling medium and cooling.

[0011] To achieve the above technical solution, a first circulating pump drives the positive electrolyte to circulate between the positive electrode tank and the positive electrode heat exchange chamber, a second circulating pump drives the negative electrolyte to circulate between the negative electrode tank and the negative electrode tube heat exchange chamber, and a circulating cooling unit drives the cooling medium to circulate. During the circulation process, the heat in the positive and negative electrolytes is transferred to the cooling medium through the heat exchange chamber assembly, achieving cooling. After heat exchange with the positive and negative electrolytes, the temperature of the cooling medium rises, and then it is cooled by the circulating cooling unit, thus maintaining the cooling medium at the required low temperature. This causes the temperature of the positive and negative electrolytes passing through the heat exchange chamber assembly to decrease. The positive electrolyte cooled in the positive electrode heat exchange chamber flows back to the positive electrode tank and mixes with the positive electrolyte in the positive electrode tank, thereby cooling the overall positive electrolyte in the positive electrode tank. Similarly, the negative electrolyte cooled in the negative electrode heat exchange chamber... After the electrolyte flows back to the negative electrode tank, it merges with the negative electrode electrolyte in the tank, thereby cooling the overall negative electrode electrolyte in the tank. Meanwhile, the cooling medium can maintain a low temperature during circulation in the circulating cooling unit, meeting the need for continuous cooling. Through the parallel plate chamber structure design, the heat dissipation area can be designed according to needs. The large chamber structure greatly reduces the flow resistance during circulation, so the efficiency of the first and second circulation pumps is relatively low, thus improving the energy storage effect. At the same time, the number of heat exchange chambers can be configured according to heat dissipation needs to meet different heat exchange requirements. Furthermore, the positive and negative electrode electrolytes cool down and dissipate heat simultaneously, greatly improving the stability of heat exchange and achieving overall cooling of the positive and negative electrode tanks. It is less affected by the environment and can ensure that the flow and pressure of the system remain balanced during operation.

[0012] In some exemplary embodiments, a first inlet pipe and a first outlet pipe are connected between the positive electrode heat exchange chamber and the positive electrode tank. The first circulation pump is connected to the first inlet pipe and / or the first outlet pipe. The positive electrode electrolyte is input into the positive electrode heat exchange chamber through the first inlet pipe and then flows back to the positive electrode tank through the first outlet pipe.

[0013] To achieve the above technical solution, the positive electrode electrolyte is injected into the positive electrode heat exchange chamber from the positive electrode tank through the first inlet pipe under the drive of the first circulation pump, and then flows back from the positive electrode heat exchange chamber to the positive electrode tank through the first outlet pipe, thereby realizing the circulation of the positive electrode electrolyte.

[0014] In some exemplary embodiments, a second inlet pipe and a second outlet pipe are connected between the negative electrode heat exchange chamber and the negative electrode tank. The second circulation pump is connected to the second inlet pipe and / or the second outlet pipe. The negative electrode electrolyte is input into the negative electrode heat exchange chamber through the second inlet pipe and then flows back to the negative electrode tank through the second outlet pipe.

[0015] To achieve the above technical solution, the negative electrode electrolyte is injected into the negative electrode heat exchange chamber from the negative electrode tank through the second inlet pipe under the drive of the second circulation pump, and then flows back from the negative electrode heat exchange chamber to the negative electrode tank through the second outlet pipe, thereby realizing the circulation of the negative electrode electrolyte.

[0016] In some exemplary embodiments, the circulating cooling unit is connected to a storage tank for storing cooling medium, and a third inlet pipe and a third outlet pipe are connected between the cooling circulation chamber and the circulating cooling unit. The circulating cooling unit is connected to the third inlet pipe and the third outlet pipe, and the cooling medium enters the cooling circulation chamber through the third inlet pipe and then flows back to the storage tank through the third outlet pipe.

[0017] To achieve the above technical solution, the circulating cooling unit pumps cooling medium from the storage tank. Driven by the circulating cooling unit, the cooling medium is injected from the storage tank into the cooling circulation chamber through the third inlet pipe, and then flows back from the cooling circulation chamber to the storage tank through the third outlet pipe, thus realizing the circulation of the cooling medium.

[0018] In some exemplary embodiments, two or more heat exchange cavity groups are provided, and each heat exchange cavity group is arranged side by side in sequence, with an insulating layer between adjacent heat exchange cavity groups.

[0019] The above technical solution can meet the requirements of high heat exchange, and the insulation layer can effectively reduce leakage current in the positive and negative electrolytes.

[0020] In some exemplary embodiments, both the positive electrode tank and the negative electrode tank are equipped with temperature sensors, and the circulating cooling unit is connected to a flow controller, which is used to control the flow rate of the cooling medium pumped by the circulating cooling unit.

[0021] To achieve the above technical solution, a temperature sensor can detect the temperature values ​​of the positive and negative electrolytes. Based on the temperature values, the flow rate of the circulating cooling unit can be adjusted by a flow controller to control the temperature values ​​of the positive and negative electrolytes within a set temperature range, thereby effectively improving the heat exchange effect.

[0022] In some exemplary embodiments, the liquid storage tank is also connected to a temperature control device for adjusting the temperature of the cooling medium.

[0023] To achieve the above technical solution, the temperature of the cooling medium can be adjusted according to the measured temperature value by the temperature control device, and the flow rate of the cooling medium can be controlled to meet the heat exchange requirements under complex conditions and effectively improve the heat exchange effect.

[0024] According to a second aspect of the present disclosure, a flow battery system is provided, comprising:

[0025] A battery stack, wherein the two sides of the battery stack are a positive electrode connection side and a negative electrode connection side, respectively;

[0026] A positive electrode container and a negative electrode container, wherein the positive electrode connection side is connected to the positive electrode container, and the negative electrode connection side is connected to the negative electrode container;

[0027] The electrolyte synchronous cooling device as described in the first aspect; and...

[0028] A delivery unit used to realize the electrolyte power supply cycle.

[0029] To achieve the above technical solution, during use, the positive and negative electrolytes are circulated into the battery stack through the delivery unit, thereby generating electrical energy through an electrochemical reaction. At the same time, the electrolyte synchronous cooling device controls the circulation cooling, thereby achieving synchronous cooling and heat dissipation of the positive and negative electrolytes, which greatly improves the stability of heat exchange.

[0030] In some exemplary embodiments, the positive electrode container is connected to the positive electrode connection side via a first infusion pipe and a first return pipe, and the negative electrode container is connected to the negative electrode connection side via a second infusion pipe and a second return pipe.

[0031] In some exemplary embodiments, the delivery unit includes: a first delivery unit connected to the positive electrode connection side and a second delivery unit connected to the negative electrode connection side, wherein the first delivery unit is connected to the first infusion tube and / or the first return tube, and the second delivery unit is connected to the second infusion tube and / or the second return tube.

[0032] In summary, compared with the prior art, this utility model has the following beneficial effects:

[0033] This utility model provides a flow battery system and an electrolyte synchronous cooling device. A first circulating pump drives the positive electrolyte to circulate between the positive electrode tank and the positive electrode heat exchange chamber, while a second circulating pump drives the negative electrolyte to circulate between the negative electrode tank and the negative electrode tube heat exchange chamber. A circulating cooling unit drives the cooling medium to circulate. During the circulation process, heat in the positive and negative electrolytes is transferred to the cooling medium through the heat exchange chamber assembly, achieving cooling. After heat exchange with the positive and negative electrolytes, the cooling medium's temperature rises, and then it is cooled by the circulating cooling unit, thus maintaining the cooling medium at the required low temperature. This lowers the temperature of the positive and negative electrolytes passing through the heat exchange chamber assembly. The positive electrolyte cooled in the positive electrode heat exchange chamber flows back to the positive electrode tank and mixes with the positive electrolyte in the tank, thereby cooling the overall positive electrolyte in the tank. The negative electrode electrolyte cooled in the negative electrode heat exchange chamber flows back to the negative electrode tank and merges with the negative electrode electrolyte in the negative electrode tank, thereby cooling the overall negative electrode electrolyte in the negative electrode tank. The cooling medium can maintain a low temperature during the circulation process, meeting the need for continuous cooling. Through the parallel plate chamber structure design, its heat dissipation area can be designed according to needs. The large cavity structure greatly reduces the flow resistance during circulation, so the efficiency of the first and second circulation pumps is relatively low, thereby improving the energy storage effect. At the same time, the number of heat exchange chamber groups can be configured according to heat dissipation needs to meet different heat exchange requirements. The positive and negative electrode electrolytes are cooled and dissipated simultaneously, which greatly improves the stability of heat exchange and can achieve overall cooling of the positive and negative electrode tanks. It is less affected by the environment and can ensure that the flow and pressure of the system remain balanced during operation. Attached Figure Description

[0034] Figure 1 This is a schematic diagram of the electrolyte synchronous cooling device in Embodiment 1 of this utility model.

[0035] Figure 2 This is a schematic diagram of the heat exchange cavity assembly in Embodiment 1 of this utility model.

[0036] Figure 3 This is a schematic diagram of the electrolyte synchronous cooling device in Embodiment 2 of this utility model.

[0037] Figure 4 This is a schematic diagram of the heat exchange cavity assembly in Embodiment 2 of this utility model.

[0038] Figure 5 This is a schematic diagram of the electrolyte synchronous cooling device in Embodiment 3 of this utility model.

[0039] Figure 6 This is a schematic diagram of the flow battery system in Embodiment 4 of this utility model.

[0040] The numbers and letters in the diagram represent the names of the corresponding components:

[0041] 10. Heat exchange chamber assembly; 11. Positive electrode heat exchange chamber; 12. Cooling circulation chamber; 13. Negative electrode heat exchange chamber; 14. Insulation layer; 20. First circulation pump; 21. Positive electrode tank; 22. First liquid inlet pipe; 23. First liquid outlet pipe; 24. First liquid delivery pipe; 25. First liquid return pipe; 30. Second circulation pump; 31. Negative electrode tank; 32. Second liquid inlet pipe; 33. Second liquid outlet pipe; 34. Second liquid delivery pipe; 35. Second liquid return pipe; 40. Circulating cooling unit; 41. Storage tank; 42. Third liquid inlet pipe; 43. Third liquid outlet pipe; 44. Flow controller; 45. Temperature control device; 50. Temperature sensor; 60. Battery stack; 61. Positive electrode connection side; 62. Negative electrode connection side; 71. First conveying unit; 72. Second conveying unit. Detailed Implementation

[0042] 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.

[0043] Example 1

[0044] like Figure 1 and Figure 2 As shown, this utility model embodiment provides an electrolyte synchronous cooling device, including: at least one heat exchange chamber group 10, the heat exchange chamber group 10 including a positive electrode heat exchange chamber 11, a cooling circulation chamber 12 and a negative electrode heat exchange chamber 13 arranged in close contact to realize heat transfer, the positive electrode heat exchange chamber 11 is connected to the positive electrode tank 21 to realize the circulation and convergence of the positive electrode electrolyte, the negative electrode heat exchange chamber 13 is connected to the negative electrode tank 31 to realize the circulation and convergence of the negative electrode electrolyte, and the cooling circulation chamber 12 is used to realize the circulation and convergence of the cooling medium; a first circulation pump 20 connected to the circulation pipeline between the positive electrode heat exchange chamber 11 and the positive electrode tank 21 to realize the circulation flow of the positive electrode electrolyte; a second circulation pump 30 connected to the circulation pipeline between the negative electrode heat exchange chamber 13 and the negative electrode tank 31 to realize the circulation flow of the negative electrode electrolyte; and a circulation cooling unit 40 connected to the cooling circulation chamber 12 to realize the circulation flow of the cooling medium and cooling.

[0045] Specifically, the positive electrode heat exchange chamber 11, the cooling circulation chamber 12, and the negative electrode heat exchange chamber 13 can be three chambers separated by two partition plates sealed in the same housing, or they can be three independent chambers attached to each other. The positive electrode heat exchange chamber 11, the cooling circulation chamber 12, and the negative electrode heat exchange chamber 13 are all made of materials with a large heat exchange coefficient, such as titanium or silicon carbide.

[0046] A first inlet pipe 22 and a first outlet pipe 23 are connected between the positive electrode heat exchange chamber 11 and the positive electrode tank 21. A first circulation pump 20 is connected to the first inlet pipe 22 and / or the first outlet pipe 23. The positive electrode electrolyte enters the positive electrode heat exchange chamber 11 through the first inlet pipe 22 and then flows back to the positive electrode tank 21 through the first outlet pipe 23. Driven by the first circulation pump 20, the positive electrode electrolyte is injected from the positive electrode tank 21 into the positive electrode heat exchange chamber 11 through the first inlet pipe 22, and then flows back from the positive electrode heat exchange chamber 11 to the positive electrode tank 21 through the first outlet pipe 23, realizing the circulation of the positive electrode electrolyte.

[0047] A second inlet pipe 32 and a second outlet pipe 33 are connected between the negative electrode heat exchange chamber 13 and the negative electrode tank 31. A second circulation pump 30 is connected to the second inlet pipe 32 and / or the second outlet pipe 33. The negative electrode electrolyte enters the negative electrode heat exchange chamber 13 through the second inlet pipe 32 and then flows back to the negative electrode tank 31 through the second outlet pipe 33. Driven by the second circulation pump 30, the negative electrode electrolyte is injected from the negative electrode tank 31 into the negative electrode heat exchange chamber 13 through the second inlet pipe 32, and then flows back from the negative electrode heat exchange chamber 13 to the negative electrode tank 31 through the second outlet pipe 33, realizing the circulation of the negative electrode electrolyte.

[0048] A circulating cooling unit 40 is connected to a storage tank 41 for storing the cooling medium. A third inlet pipe 42 and a third outlet pipe 43 connect the cooling circulation chamber 12 and the circulating cooling unit 40. The cooling medium enters the cooling circulation chamber 12 through the third inlet pipe 42 and then flows back to the storage tank 41 through the third outlet pipe 43. The circulating cooling unit 40 can be, for example, a chiller, and the cooling medium can be, for example, ultrapure water, ethylene glycol, etc. The circulating cooling unit 40 pumps the cooling medium from the storage tank 41. Driven by the circulating cooling unit 40, the cooling medium is injected from the storage tank 41 into the cooling circulation chamber 12 through the third inlet pipe 42, and then flows back to the storage tank 41 from the cooling circulation chamber 12 through the third outlet pipe 43, thus realizing the circulation of the cooling medium.

[0049] The positive electrolyte is driven by the first circulating pump 20 to circulate between the positive electrode tank 21 and the positive electrode heat exchange chamber 11, and the negative electrolyte is driven by the second circulating pump 30 to circulate between the negative electrode tank 31 and the negative electrode tube heat chamber. The cooling medium is circulated by the circulating cooling unit 40. During the circulation process, the heat in the positive and negative electrolytes is transferred to the cooling medium through the heat exchange chamber assembly 10 to achieve cooling. After the cooling medium exchanges heat with the positive and negative electrolytes, its temperature rises. After being cooled by the circulating cooling unit 40, the cooling medium is kept at the required low temperature, so that the temperature of the positive and negative electrolytes passing through the heat exchange chamber assembly 10 decreases. The positive electrolyte cooled in the positive electrode heat exchange chamber 11 flows back to the positive electrode tank 21 and mixes with the positive electrolyte in the positive electrode tank 21, thereby cooling the positive electrolyte in the positive electrode tank 21 as a whole. Similarly, the cooling medium in the negative electrode heat exchange chamber 13... After the negative electrode electrolyte flows back to the negative electrode tank 31, it merges with the negative electrode electrolyte in the negative electrode tank 31, thereby cooling the overall negative electrode electrolyte in the negative electrode tank 31. The cooling medium can maintain a low temperature during the circulation process, meeting the need for continuous cooling. Through the parallel plate chamber structure design, its heat dissipation area can be designed according to needs. The large cavity structure greatly reduces the flow resistance during circulation. Therefore, the efficiency of the first circulation pump 20 and the second circulation pump 30 is relatively low, which can improve the energy storage effect. At the same time, the number of heat exchange chamber groups 10 can be configured according to heat dissipation needs to meet different heat exchange requirements. The positive electrode electrolyte and the negative electrode electrolyte are cooled and dissipated simultaneously, which greatly improves the stability of heat exchange and can achieve overall cooling of the positive electrode tank 21 and the negative electrode tank 31. It is less affected by the environment and can ensure that the flow and pressure of the system remain balanced during operation.

[0050] Example 2

[0051] This embodiment provides an electrolyte synchronous cooling device, which differs from Embodiment 1 in that: Figure 3 and Figure 4 As shown, in this embodiment, two or more heat exchange cavity groups 10 are provided, for example, 2-5 groups are provided. Each heat exchange cavity group 10 is arranged side by side and attached to each other. An insulating layer 14 is provided between adjacent heat exchange cavity groups 10. The insulating layer 14 can be formed by coating an insulating coating on the surface of the heat exchange cavity group 10, or it can be an insulating plate pasted on the surface of the heat exchange cavity group 10. The arrangement of multiple heat exchange cavity groups 10 can meet the requirements of high heat exchange, and the arrangement of the insulating layer 14 can effectively reduce the leakage of positive and negative electrolytes.

[0052] Example 3

[0053] This embodiment provides an electrolyte synchronous cooling device, which differs from Embodiment 1 or Embodiment 2 in that: Figure 5As shown, in this embodiment, temperature sensors 50 are provided in both the positive electrode tank 21 and the negative electrode tank 31. The circulating cooling unit 40 is connected to a flow controller 44. The flow controller 44 is used to control the flow rate of the cooling medium pumped by the circulating cooling unit 40. One or more temperature sensors 50 can be set in the positive electrode tank 21 and the negative electrode tank 31 respectively. The flow controller 44 can control the flow rate by controlling the opening degree, and can also adjust the pumped flow rate by controlling the rotation speed of the circulating cooling unit 40.

[0054] Understandably, the temperature sensor 50 and the flow controller 44 are typically connected to the control system of the flow battery system and centrally controlled through the flow battery control system. The temperature sensor 50 can detect the temperature values ​​of the positive and negative electrolytes. Based on the temperature values, the flow controller 44 can adjust the flow rate of the circulating cooling unit 40 to control the temperature values ​​of the positive and negative electrolytes within the set temperature range, thereby effectively improving the heat exchange effect.

[0055] In some embodiments, the storage tank 41 is also connected to a temperature control device 45 for adjusting the temperature of the cooling medium. The temperature control device 45 may include a heating unit such as a heating tube or heating wire, or a refrigeration unit such as a compressor refrigeration system or a semiconductor refrigeration system. The temperature control device 45 can adjust the temperature of the cooling medium according to the measured temperature value, and can be combined with the flow control of the cooling medium to meet the heat exchange requirements of complex situations and effectively improve the heat exchange effect.

[0056] Example 4

[0057] like Figure 6 As shown, this utility model embodiment provides a flow battery system, including: a battery stack 60, with a positive electrode connection side 61 and a negative electrode connection side 62 on both sides; a positive electrode tank 21 and a negative electrode tank 31, with the positive electrode connection side 61 connected to the positive electrode tank 21 and the negative electrode connection side 62 connected to the negative electrode tank 31; an electrolyte synchronous cooling device as described in Embodiment 1, Embodiment 2, or Embodiment 3; and a delivery unit for realizing electrolyte power supply circulation.

[0058] Specifically, the positive electrode tank 21 is used to store the positive electrode electrolyte, and the negative electrode tank 31 is used to store the positive electrode electrolyte. The positive electrode tank 21 is connected to the positive electrode connection side 61 through the first inlet pipe 24 and the first return pipe 25, and the negative electrode tank 31 is connected to the negative electrode connection side 62 through the second inlet pipe 34 and the second return pipe 35. The delivery unit includes a first delivery unit 71 connected to the positive electrode connection side 61 and a second delivery unit 72 connected to the negative electrode connection side 62. The first delivery unit 71 is connected to the first inlet pipe 24 and / or the first return pipe 25, and the second delivery unit 72 is connected to the second inlet pipe 34 and / or the second return pipe 35. In this embodiment, both the first delivery unit 71 and the second delivery unit 72 are inlet pumps. The first delivery unit 71 is connected to the first inlet pipe 24, and the second delivery unit 72 is connected to the second inlet pipe 34.

[0059] In use, the positive and negative electrolytes are circulated into the battery stack 60 through the delivery unit, thereby generating electrical energy through an electrochemical reaction. At the same time, the electrolyte synchronous cooling device controls the circulation cooling, thereby achieving synchronous cooling and heat dissipation of the positive and negative electrolytes, which greatly improves the stability of heat exchange.

[0060] The above embodiments only illustrate several implementation methods of this utility model, and their descriptions are relatively specific and detailed, but they should not be construed as limiting the scope of the utility model patent. It should be noted that for those skilled in the art, several modifications and improvements can be made without departing from the concept of this utility model. These are all equivalent modifications and improvements made to the above embodiments based on the essential technology of this utility model, and all of these fall within the protection scope of this utility model.

Claims

1. An electrolyte synchronous cooling device, characterized in that, include: At least one heat exchange chamber group, the heat exchange chamber group including a positive electrode heat exchange chamber, a cooling circulation chamber and a negative electrode heat exchange chamber arranged in close proximity to each other to realize heat transfer, the positive electrode heat exchange chamber is connected to the positive electrode tank to realize the circulation and convergence of the positive electrode electrolyte, the negative electrode heat exchange chamber is connected to the negative electrode tank to realize the circulation and convergence of the negative electrode electrolyte, and the cooling circulation chamber is used to realize the circulation and convergence of the cooling medium; A first circulation pump on the circulation pipeline connected between the positive electrode heat exchange chamber and the positive electrode tank is used to realize the circulation flow of the positive electrode electrolyte; A second circulation pump connected to the circulation pipeline between the negative electrode heat exchange chamber and the negative electrode tank is used to realize the circulation flow of the negative electrode electrolyte; and A circulating cooling unit connected to the cooling circulation chamber is used to realize the circulation of cooling medium and cooling.

2. The electrolyte synchronous cooling device according to claim 1, characterized in that, The positive electrode heat exchange chamber is connected to the positive electrode tank by a first inlet pipe and a first outlet pipe. The first circulation pump is connected to the first inlet pipe and / or the first outlet pipe. The positive electrode electrolyte is input into the positive electrode heat exchange chamber through the first inlet pipe and then flows back to the positive electrode tank through the first outlet pipe.

3. The electrolyte synchronous cooling device according to claim 1, characterized in that, The negative electrode heat exchange chamber is connected to the negative electrode tank by a second inlet pipe and a second outlet pipe. The second circulation pump is connected to the second inlet pipe and / or the second outlet pipe. The negative electrode electrolyte is fed into the negative electrode heat exchange chamber through the second inlet pipe and then flows back to the negative electrode tank through the second outlet pipe.

4. The electrolyte synchronous cooling device according to claim 1, characterized in that, The circulating cooling unit is connected to a storage tank for storing cooling medium. A third inlet pipe and a third outlet pipe are connected between the cooling circulation chamber and the circulating cooling unit. The cooling medium enters the cooling circulation chamber through the third inlet pipe and flows back to the storage tank through the third outlet pipe.

5. The electrolyte synchronous cooling device according to claim 1, characterized in that, The heat exchange cavity group is provided in two or more groups, and each heat exchange cavity group is arranged side by side in sequence, with an insulating layer between adjacent heat exchange cavity groups.

6. The electrolyte synchronous cooling device according to claim 4, characterized in that, Temperature sensors are installed in both the positive electrode tank and the negative electrode tank. The circulating cooling unit is connected to a flow controller, which is used to control the flow rate of the cooling medium pumped by the circulating cooling unit.

7. The electrolyte synchronous cooling device according to claim 6, characterized in that, The storage tank is also connected to a temperature control device for adjusting the temperature of the cooling medium.

8. A flow battery system, characterized in that, include: A battery stack, wherein the two sides of the battery stack are a positive electrode connection side and a negative electrode connection side, respectively; A positive electrode container and a negative electrode container, wherein the positive electrode connection side is connected to the positive electrode container, and the negative electrode connection side is connected to the negative electrode container; The electrolyte synchronous cooling device as described in any one of claims 1-7; and, A delivery unit used to realize the electrolyte power supply cycle.

9. The flow battery system according to claim 8, characterized in that, The positive electrode container is connected to the positive electrode connection side through a first infusion pipe and a first return pipe, and the negative electrode container is connected to the negative electrode connection side through a second infusion pipe and a second return pipe.

10. The flow battery system according to claim 9, characterized in that, The delivery unit includes: a first delivery unit connected to the positive electrode connection side and a second delivery unit connected to the negative electrode connection side, wherein the first delivery unit is connected to the first infusion tube and / or the first return tube, and the second delivery unit is connected to the second infusion tube and / or the second return tube.

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