All-vanadium redox flow battery cooling system

Abstract

The present invention belongs to the field of battery cooling technology and relates to a cooling system for an all-vanadium liquid flow battery, comprising a first heat dissipation module, a second heat dissipation module, a radiation cooling membrane, a solid adsorption cooling module, and a thermoelectric cooling module; and a circulation transport module for transporting the cooling energy generated by the solid adsorption cooling module and the cooling energy generated by the thermoelectric cooling module to the first and second heat dissipation modules, and removing heat from the first and second heat dissipation modules. The present invention can generate cooling energy through the adsorption and desorption cycles of the solid adsorption cooling module and through the thermoelectric effect of the thermoelectric cooling module, allowing the circulation transport module to transport the cooling energy generated by the solid adsorption cooling module and the cooling energy generated by the thermoelectric cooling module to the first and second heat dissipation modules, respectively, and remove heat from the first and second heat dissipation modules. This not only improves the heat dissipation effect, but also reduces energy consumption, ensuring that the battery's charge and discharge performance is not affected.

Description

Technical Field

[0001] The invention belongs to the technical field of battery cooling and relates to an all-vanadium liquid flow battery cooling system. Background Art

[0002] The Vanadium Redox Flow Battery (VRFB) is a circulating liquid redox battery using vanadium as the active material. Due to its long life, high safety, and flexible capacity expansion, it is primarily used for large-scale, long-duration energy storage. A VRFB primarily consists of a stack (electrochemical reaction unit) and a reservoir (electrolyte storage unit), along with supporting equipment such as piping, pumps, and control systems. A common issue with VRFB operation is heat generation, primarily from electrochemical reaction heat, overpotential heat, cross-reaction heat, and bypass current heat. Heat is absorbed by the electrochemical reaction during charging and released during discharge. Overpotential heat, cross-reaction heat, and bypass current heat all contribute to electrolyte temperature increases during the charge and discharge processes. Battery temperature affects electrochemical performance and plays a significant role in the efficiency of the battery system.

[0003] At present, in order to reduce the heating problem of all-vanadium liquid flow batteries, the commonly used heat dissipation methods include operating parameter control heat dissipation, active heat dissipation and passive heat dissipation. Among them, operating parameter control heat dissipation is to reduce the battery temperature by reducing the current value and electrolyte flow rate; active heat dissipation is to reduce the battery temperature by forced air cooling and liquid cooling; and passive heat dissipation is to dissipate heat through natural convection.

[0004] However, all three of the above heat dissipation methods have defects to varying degrees. The regulation of operating parameters will affect the battery's charge and discharge performance; active heat dissipation will increase energy consumption and increase operating costs; the effect of passive heat dissipation is limited and depends on the design of the battery structure. Summary of the Invention

[0005] The object of the present invention is to provide a cooling system for an all-vanadium redox flow battery, which can improve the heat dissipation effect while reducing energy consumption and ensuring that the charge and discharge performance of the battery is not affected.

[0006] To achieve the above objectives, the present invention provides the following technical solutions:

[0007] A cooling system for an all-vanadium redox flow battery comprises a first heat dissipation module disposed on a battery stack of the all-vanadium redox flow battery and a second heat dissipation module disposed in a liquid storage tank of the all-vanadium redox flow battery, and further comprises:

[0008] A radiation cooling membrane is provided on the outside of the battery stack and the outside of the liquid storage tank of the all-vanadium liquid flow battery, and is used for radiation cooling of the outside of the battery stack and the liquid storage tank of the all-vanadium liquid flow battery;

[0009] Solid adsorption refrigeration module, used to generate cooling through adsorption and desorption cycles.

[0010] Thermoelectric cooling modules are used to generate cooling through the thermoelectric effect.

[0011] The circulation transport module is respectively connected to the first heat dissipation module, the second heat dissipation module, the solid adsorption refrigeration module, and the thermoelectric refrigeration module, and is used to transport the cold energy generated by the solid adsorption refrigeration module and the cold energy generated by the thermoelectric refrigeration module to the first heat dissipation module and the second heat dissipation module, respectively, and take away the heat of the first heat dissipation module and the second heat dissipation module.

[0012] The present invention is also characterized in that:

[0013] The solid adsorption refrigeration module includes:

[0014] The two adsorbers are each provided with a refrigerant.

[0015] The solar thermal collector is connected to the heat storage tank, and the outlet of the heat storage tank is connected to the first inlet of the two adsorbers respectively. The solar thermal collector uses solar energy to heat hot water and stores the hot water in the heat storage tank. The heat storage tank is used to provide hot water for desorption of the two adsorbers.

[0016] The inlet of the condenser is connected to the first outlet of the two adsorbers respectively.

[0017] The inlet of the liquid receiver is connected to the outlet of the condenser.

[0018] The first inlet of the evaporator is connected to the outlet of the liquid storage tank through a throttle valve, the outlet of the evaporator is respectively connected to the second inlets of the two adsorbers, and the second inlet and the second outlet of the evaporator are respectively connected to the circulation conveying module.

[0019] The thermoelectric cooling module includes:

[0020] Photovoltaic panel assemblies are used to generate electricity using solar energy.

[0021] The digital control matcher is electrically connected to the photovoltaic panel assembly and is used to convert the voltage output by the photovoltaic panel assembly.

[0022] The battery is electrically connected to the digital control matcher and is used to store the electrical energy generated by the photovoltaic panel assembly.

[0023] The thermoelectric cooler is electrically connected to the numerical control matcher. The thermoelectric cooler has a cold end fin and a hot end fin. The inlet and outlet of the cold end fin are respectively connected to the circulation conveying module.

[0024] The heat storage tank is connected to the two adsorbers through a water pump, the second outlets of the two adsorbers are connected to the first inlet of the cooler, the first outlet of the cooler is connected to the inlets of the two water pumps respectively, the second inlet and the second outlet of the cooler are connected to a cooling assembly, the outlet of each water pump is connected to the inlet of the hot end fin, the outlet of the hot end fin is connected to the first inlet of the heat recovery tank, the second inlet of the heat recovery tank is connected to the second outlets of the two adsorbers respectively, and the outlet of the heat recovery tank is connected to the inlet of the heat storage tank.

[0025] The cooling components include:

[0026] The storage tank stores cooling water therein, and the outlet of the storage tank is connected to the second inlet of the cooler.

[0027] The cooling tower has an inlet connected to the second outlet of the cooler.

[0028] It also includes an air cooling module, which includes:

[0029] A plurality of fans are provided in the battery stack of the all-vanadium liquid flow battery and are used for forced convection heat dissipation of the battery stack of the all-vanadium liquid flow battery.

[0030] It also includes a control module, which is electrically connected to multiple temperature sensors. The multiple temperature sensors are used to detect the stack temperature and liquid storage tank temperature of the all-vanadium liquid flow battery and feed the detected temperature back to the control module. The control module is electrically connected to multiple fans and two water pumps respectively, and the control module is used to control the start and stop of the multiple fans and two water pumps.

[0031] It also includes a radiation cooling module, which includes:

[0032] The radiation cooling membrane is arranged on the outside of the battery stack and the outside of the liquid storage tank of the all-vanadium liquid flow battery.

[0033] The all-vanadium redox flow battery cooling system of the present invention has the following advantages:

[0034] First, through the cooperation of the first heat dissipation module, the second heat dissipation module, the solid adsorption refrigeration module, the thermoelectric refrigeration module and the circulation and transportation module, cold energy can be generated through the adsorption and desorption cycle of the solid adsorption refrigeration module, and cold energy can be generated through the thermoelectric effect of the thermoelectric refrigeration module. The circulation and transportation module can transport the cold energy generated by the solid adsorption refrigeration module and the cold energy generated by the thermoelectric refrigeration module to the first heat dissipation module and the second heat dissipation module respectively, and take away the heat of the first heat dissipation module and the second heat dissipation module, which not only improves the heat dissipation effect, but also reduces energy consumption, ensuring that the charging and discharging performance of the battery is not affected.

[0035] Second, the present invention couples solid adsorption refrigeration, thermoelectric refrigeration, and radiation refrigeration with traditional heat dissipation systems. Solid adsorption refrigeration, thermoelectric refrigeration, and radiation refrigeration are all clean and environmentally friendly cooling methods, which improve the overall heat dissipation efficiency and reduce the heat dissipation energy consumption of all-vanadium liquid flow batteries in summer.

[0036] Third, the solid adsorption refrigeration and thermoelectric refrigeration in the present invention are active heat dissipation, and solar energy is used as the driving force for refrigeration. Compared with traditional active heat dissipation solutions (air cooling, liquid cooling, etc.), the same refrigerant is used, and the cooling effect is more significant. At the same time, the refrigerant flow rate is smaller than that of traditional solutions, energy consumption is also less, and it is clean, environmentally friendly and pollution-free. BRIEF DESCRIPTION OF THE DRAWINGS

[0037] Figure 1 It is a schematic diagram of the overall structure of the present invention.

[0038] Figure 2 It is a structural schematic diagram of the solid adsorption refrigeration module in the present invention.

[0039] Figure 3 Schematic diagram of the structure of the thermoelectric cooling module in the present invention.

[0040] Figure 4 It is a schematic diagram of the overall process of the present invention.

[0041] Figure 5 It is a schematic diagram of the main structure of the liquid storage tank in the present invention.

[0042] Reference numerals:

[0043] 1. Adsorber, 2. Heat exchange coil, 3. Storage tank, 4. Cooler, 5. Water pump, 6. Cooling tower, 7. Control module, 8. Heat recovery tank, 9. Solar collector, 10. Heat storage tank, 11. Condenser, 12. Liquid reservoir, 13. Throttle valve, 14. Evaporator, 15. Refrigerant outlet, 16. Refrigerant inlet, 17. Photovoltaic panel assembly, 18. CNC matcher, 19. Thermoelectric cooler, 20. Battery, 21. Cold end fin, 22. Hot end fin, 23. Liquid storage tank, 24. Air cooling module, 25. First solenoid valve, 26. Second solenoid valve, 27. Third solenoid valve, 28. Fourth solenoid valve, 29. Fifth solenoid valve, 30. Sixth solenoid valve, 31. Seventh solenoid valve, 32. Eighth solenoid valve, 33. Ninth solenoid valve. DETAILED DESCRIPTION

[0044] The technical solutions in the present invention will be described clearly and in detail below with reference to the accompanying drawings. In the description of the embodiments of the present invention, unless otherwise specified, " / " means or, for example, A / B can mean A or B: "and / or" in the text is only a description of the association relationship of associated objects, indicating that there can be three relationships, such as A and / or B, which can mean: A exists alone, A and B exist at the same time, and B exists alone. In addition, in the description of the embodiments of the present invention, "multiple" refers to two or more than two. The following terms "first" and "second" are used for descriptive purposes only and cannot be understood as implying or suggesting relative importance or implicitly indicating the number of technical features indicated. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features.

[0045] like Figure 1 As shown, the present invention provides a cooling system for an all-vanadium liquid flow battery, comprising a first heat dissipation module arranged on the battery stack of the all-vanadium liquid flow battery, a second heat dissipation module arranged in the liquid storage tank 23 of the all-vanadium liquid flow battery, a radiation cooling membrane, a solid adsorption cooling module, a thermoelectric cooling module and a circulation transport module. The radiation cooling membrane is arranged on the outside of the battery stack and the outside of the liquid storage tank of the all-vanadium liquid flow battery. The radiation cooling membrane is used to perform radiation cooling on the outside of the battery stack and the liquid storage tank of the all-vanadium liquid flow battery. The solid adsorption cooling module is used to generate cooling through adsorption and desorption cycles. The thermoelectric cooling module is used to generate cooling through thermoelectric effect. The circulation transport module is connected to the first heat dissipation module, the second heat dissipation module, the solid adsorption cooling module and the thermoelectric cooling module respectively. The circulation transport module is used to transport the cooling generated by the solid adsorption cooling module and the cooling generated by the thermoelectric cooling module to the first heat dissipation module and the second heat dissipation module respectively, and take away the heat of the first heat dissipation module and the second heat dissipation module. The present invention cooperates with the first heat dissipation module, the second heat dissipation module, the radiation cooling membrane, the solid adsorption cooling module, the thermoelectric cooling module and the circulation conveying module to perform radiation cooling on the outside of the battery stack and the liquid storage tank of the all-vanadium liquid flow battery through the radiation cooling membrane, and generates cooling energy through the adsorption and desorption cycle of the solid adsorption cooling module and the thermoelectric effect of the thermoelectric cooling module. The circulation conveying module can respectively transport the cooling energy generated by the solid adsorption cooling module and the cooling energy generated by the thermoelectric cooling module to the first heat dissipation module and the second heat dissipation module, and take away the heat transported to the first heat dissipation module and the second heat dissipation module respectively, which not only improves the heat dissipation effect, but also reduces energy consumption, ensuring that the charging and discharging performance of the battery is not affected.

[0046] The first heat dissipation module includes a plurality of heat sinks, which are evenly arranged on the battery stack of the all-vanadium liquid flow battery and are used to absorb heat generated by the battery stack of the all-vanadium liquid flow battery.

[0047] like Figure 5As shown, the second heat dissipation module includes a heat exchange coil 2, which is arranged in the liquid storage tank 23 of the all-vanadium redox flow battery. The heat exchange coil 2 has a refrigerant outlet 15 and a refrigerant inlet 16, and the refrigerant outlet 15 and the refrigerant inlet 16 are respectively connected to the circulation and transportation module.

[0048] Among them, the circulation and transportation module includes an exhaust fan, which is respectively connected to the first heat dissipation module, the second heat dissipation module, the solid adsorption refrigeration module, and the thermoelectric refrigeration module. The exhaust fan sends external air into the first heat dissipation module and the second heat dissipation module to be heated into hot air, and then sends the hot air into the solid adsorption refrigeration module and the thermoelectric refrigeration module for heat exchange. After the heat exchange, it becomes cold air, and then the cold air is sent into multiple heat sinks and heat exchange coils 2 to cool down the multiple heat sinks and heat exchange coils 2.

[0049] like Figure 2 As shown, the solid adsorption refrigeration module includes two adsorbers 1, a solar thermal collector 9, a hot water storage tank 10, a condenser 11, a liquid storage tank 12 and an evaporator 14. A refrigerant is respectively provided inside the two adsorbers 1. The refrigerant is one of activated carbon and methanol, molecular sieve and water, silica gel and water, and calcium chloride and ammonia. The refrigerant is preferably molecular sieve and water. The solar thermal collector 9 is connected to the hot water storage tank 10. The outlet of the hot water storage tank 10 is respectively connected to the first inlet of the two adsorbers 1. The solar thermal collector 9 uses solar energy to heat hot water and stores the hot water in the hot water storage tank 10. The hot water storage tank 10 is used to provide hot water for desorption of the two adsorbers 1. The inlet of the condenser 11 is respectively connected to the first outlet of the two adsorbers 1, the inlet of the liquid storage tank 12 is connected to the outlet of the condenser 11, the first inlet of the evaporator 14 is connected to the outlet of the liquid storage tank 12 through a throttle valve 13, the outlet of the evaporator 14 is respectively connected to the second inlet of the two adsorbers 1, and the second inlet and the second outlet of the evaporator 14 are respectively connected to the circulation and conveying module.

[0050] like Figure 3 As shown, the thermoelectric cooling module includes a photovoltaic panel assembly 17, a CNC matcher 18, a battery 20 and a thermoelectric refrigerator 19. The photovoltaic panel assembly 17 is used to generate electricity using solar energy. The CNC matcher 18 is electrically connected to the photovoltaic panel assembly 17. The CNC matcher 18 is used to convert the voltage output by the photovoltaic panel assembly 17 to match the input voltage of the battery 20 with the input voltage of the thermoelectric refrigerator 19. The battery 20 is electrically connected to the CNC matcher 18. The battery 20 is used to store the electrical energy generated by the photovoltaic panel assembly 17. The thermoelectric refrigerator 19 is electrically connected to the CNC matcher 18. The thermoelectric refrigerator 19 has a cold end fin 21 and a hot end fin 22. The inlet and outlet of the cold end fin 21 are respectively connected to the circulation conveying module. The thermoelectric refrigerator 19 is used to use the electrical energy generated by the photovoltaic panel assembly 17 or the electrical energy stored in the battery 20 to cool and cool the cooling medium transported by the circulation conveying module.

[0051] like Figure 1 、 Figure 2 As shown, the hot water storage tank 10 is connected to the two adsorbers 1 through a water pump 5, the second outlets of the two adsorbers 1 are connected to the first inlet of the cooler 4, the first outlets of the cooler 4 are respectively connected to the inlets of the two water pumps 5, the second inlet and the second outlet of the cooler 4 are connected to a cooling component, the outlet of each water pump 5 is connected to the inlet of the hot end fin 22, and the outlet of the hot end fin 22 is connected to the first inlet of the heat recovery tank 8, so that water can be sent into the hot end fin 22 through the two water pumps 5 to cool the hot end fin 22. After heat exchange, the water temperature rises and enters the heat recovery tank 8. The second inlet of the heat recovery tank 8 is respectively connected to the second outlets of the two adsorbers 1, and the outlet of the heat recovery tank 8 is connected to the inlet of the hot water storage tank 10. When each adsorber 1 releases heat through adsorption, the corresponding water pump 5 sends water into the adsorber 1 to cool the adsorber 1. After heat exchange, the water temperature rises and enters the heat recovery tank 8 and finally enters the hot water storage tank 10.

[0052] like Figure 1 、 Figure 2 As shown, the cooling component includes a storage tank 3 and a cooling tower 6. Cooling water is stored in the storage tank 3. The outlet of the storage tank 3 is connected to the second inlet of the cooler 4, and the inlet of the cooling tower 6 is connected to the second outlet of the cooler 4. The hot water in the hot water storage tank 10 enters the adsorber 1 in the desorption process for heat exchange, and flows out of the adsorber 1 after the hot water temperature is reduced. When the temperature of the water flowing out of the adsorber 1 is lower than the temperature of the water in the hot water storage tank 10, the heat recovery condition is not met, and the water flowing out of the adsorber 1 does not enter the heat recovery tank 8. Part of the water flows into the hot water storage tank 10, and part of the water flows into the cooler 4 to exchange heat with the cold water from the storage tank 3. After the temperature of the cold water in the storage tank 3 increases, it enters the cooling tower 6 for cooling. After the temperature of the water flowing out of the adsorber 1 continues to decrease, it passes through the water pump 5, and part of the water enters the hot end fin 22 of the thermoelectric cooler 19, and part of the water enters the adsorber 1 to cool the adsorber 1.

[0053] like Figure 1 、 Figure 4 As shown, the present invention provides a cooling system for an all-vanadium liquid flow battery, further comprising an air cooling module 24. The air cooling module 24 comprises a plurality of fans, which are arranged in the battery stack of the all-vanadium liquid flow battery and are used to perform forced convection heat dissipation on the battery stack of the all-vanadium liquid flow battery.

[0054] like Figure 1 、 Figure 4As shown, the present invention provides a cooling system for an all-vanadium liquid flow battery, further comprising a control module 7, the control module 7 being electrically connected to a plurality of temperature sensors, the plurality of temperature sensors being used to detect the stack temperature of the all-vanadium liquid flow battery and the temperature of the liquid storage tank 23 and feeding back the detected temperatures to the control module 7, the control module 7 being electrically connected to a plurality of fans and two water pumps 5, respectively, and the control module 7 being used to control the start and stop of the plurality of fans and the two water pumps 5.

[0055] like Figure 1 、 Figure 4 As shown, the present invention provides an all-vanadium liquid flow battery cooling system, which also includes a radiation cooling module. The radiation cooling module includes a radiation cooling membrane. The radiation cooling membrane is arranged on the outside of the all-vanadium liquid flow battery stack and the outside of the liquid storage tank 23. The radiation cooling membrane is made of a polymer microsphere composite material and utilizes the principle of radiation cooling to further improve the cooling effect.

[0056] like Figure 1 As shown, the first outlet of each adsorber 1 is provided with a first solenoid valve 25, the second inlet of each adsorber 1 is provided with a second solenoid valve 26, the second outlet of each adsorber 1 is provided with a third solenoid valve 27, the inlet of each water pump 5 is provided with a fourth solenoid valve 28, the outlet of the heat storage tank 10 is provided with a fifth solenoid valve 29, the first inlet of the cooler 4 is provided with a sixth solenoid valve 30, the first inlet of the heat recovery tank 8 is provided with a seventh solenoid valve 31, the first inlet of the cooler 4 is provided with an eighth solenoid valve 32, the outlet of the heat recovery tank 8 is provided with a A ninth solenoid valve 33 is provided, and the first solenoid valve 25, the second solenoid valve 26, the third solenoid valve 27, the fourth solenoid valve 28, the fifth solenoid valve 29, the sixth solenoid valve 30, the seventh solenoid valve 31, the eighth solenoid valve 32 and the ninth solenoid valve 33 are all electrically connected to the control module 7, so as to facilitate the control of the start and stop of the first solenoid valve 25, the second solenoid valve 26, the third solenoid valve 27, the fourth solenoid valve 28, the fifth solenoid valve 29, the sixth solenoid valve 30, the seventh solenoid valve 31, the eighth solenoid valve 32 and the ninth solenoid valve 33 through the control module 7.

[0057] Working principle: Multiple temperature sensors detect the temperature of the battery stack and the temperature of the liquid storage tank 23 of the all-vanadium redox flow battery in real time and feed the detected temperature back to the control module 7.

[0058] When the detected temperature is between 10℃ and 15℃, the air temperature is relatively low and the all-vanadium liquid flow battery can dissipate heat by natural convection.

[0059] When the detected temperature is between 15°C and 30°C, the sunlight increases, and the solar collector 9 begins to operate. The hot water it produces is stored in the hot water storage tank. The control module 7 controls the two water pumps 5 to start up in sequence, transporting the hot water from the hot water storage tank to the two adsorbers 1. The two adsorbers 1 undergo a desorption process. Simultaneously, the photovoltaic panel assembly 17 starts to charge the battery 20. At this point, natural convection may no longer be able to meet the cooling requirements, so the control module 7 controls the activation of multiple fans to provide forced convection cooling.

[0060] When the detected temperature is between 30℃ and 40℃, the solid adsorption refrigeration module is turned on for solid adsorption refrigeration. The fan can be turned off or the fan speed can be reduced. The desorption process of one adsorber 1 is completed and adsorption refrigeration is performed. The water vapor in the evaporator 14 flows into the adsorber 1, absorbs heat and enters the condenser 11 to be condensed into cooling water, and then flows back to the evaporator 14 through the throttle valve 13 to cool and reduce the pressure. The circulation and delivery module sends air into multiple heat sinks and heat exchange coils 2. The air is heated into hot air, and then sent to the evaporator 14 for cooling. After heat exchange, it becomes cold air, and then sent to multiple heat sinks and heat exchange coils 2 to cool the multiple heat sinks and heat exchange coils 2. The cooling water becomes water vapor and enters the adsorber 1 again for circulation. When the adsorber 1 is saturated with adsorption, the desorption process of the other adsorber 1 is completed, and another adsorber 1 is replaced for adsorption refrigeration. At the same time, the adsorber 1 performs the desorption process.

[0061] When the detected temperature exceeds 40°C, the photovoltaic panel assembly 17 has fully charged the battery 20, but there is still sufficient sunlight. The thermoelectric cooling module is directly turned on for thermoelectric cooling. At this time, solid adsorption cooling and thermoelectric cooling are carried out simultaneously. The system cooling power is sufficient and the fan can be turned off. The photovoltaic panel assembly 17 supplies power to the thermoelectric cooler 19 through the CNC matcher 18. The temperature of the cold end fins 21 of the thermoelectric cooler 19 drops. The circulation conveying module sends air into the multiple heat sinks and heat exchange coils 2. The air is heated to hot air, which is then sent to the cold end fins 21 for cooling. After heat exchange, it becomes cold air, which is then sent to the multiple heat sinks and heat exchange coils 2 to cool the multiple heat sinks and heat exchange coils 2. After absorbing heat, the cold end fins 21 transfer the heat to the hot end fins 22 through the thermoelectric effect for heat dissipation.

[0062] When the sunlight may no longer be able to support the solar collector 9, the two adsorbers 1 are also unable to perform the desorption process, and the electric energy stored in the battery 20 is immediately used to continue to power the thermoelectric cooler 19 for thermoelectric cooling.

[0063] When the power of the battery 20 is consumed, the two adsorbers 1 also reach the adsorption saturation state. At this time, if the heat dissipation demand is still large, the fan is turned on for forced convection heat dissipation, and switched to natural convection depending on the change of heat dissipation demand.

[0064] It will be understood that the present invention is described by way of some embodiments, and it will be appreciated by those skilled in the art that various changes or equivalent substitutions may be made to these features and embodiments without departing from the spirit and scope of the present invention. In addition, under the teachings of the present invention, these features and embodiments may be modified to adapt to specific circumstances and materials without departing from the spirit and scope of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed herein, and all embodiments falling within the scope of the claims of the present invention are intended to be protected by the present invention.

Claims

1. A cooling system for an all-vanadium liquid flow battery, comprising a first heat dissipation module arranged on a battery stack of the all-vanadium liquid flow battery and a second heat dissipation module arranged in a liquid storage tank (23) of the all-vanadium liquid flow battery, characterized in that: Also includes: A radiation cooling film is arranged outside the battery stack of the all-vanadium liquid flow battery and outside the liquid storage tank (23), and is used to perform radiation cooling on the outside of the battery stack of the all-vanadium liquid flow battery and the liquid storage tank (23); Solid adsorption refrigeration module, used to generate cooling through adsorption and desorption cycles; Thermoelectric cooling module, used to generate cooling through thermoelectric effect; The circulation transport module is connected to the first heat dissipation module, the second heat dissipation module, the solid adsorption refrigeration module, and the thermoelectric refrigeration module, respectively, and is used to transport the cold energy generated by the solid adsorption refrigeration module and the cold energy generated by the thermoelectric refrigeration module to the first heat dissipation module and the second heat dissipation module, respectively, and take away the heat of the first heat dissipation module and the second heat dissipation module; The solid adsorption refrigeration module comprises: Two adsorbers (1), each containing a refrigerant; A solar thermal collector (9) and a hot water storage tank (10), wherein the solar thermal collector (9) is connected to the hot water storage tank (10), and the outlet of the hot water storage tank (10) is respectively connected to the first inlet of the two adsorbers (1). The solar thermal collector (9) utilizes solar energy to heat hot water, and stores the hot water in the hot water storage tank (10). The hot water storage tank (10) is used to provide hot water for desorption of the two adsorbers (1); A condenser (11), the inlet of which is connected to the first outlet of the two adsorbers (1); a liquid storage container (12), the inlet of which is connected to the outlet of the condenser (11); An evaporator (14), wherein a first inlet is connected to an outlet of a liquid storage tank (12) via a throttle valve (13), an outlet of the evaporator (14) is respectively connected to the second inlets of the two adsorbers (1), and a second inlet and a second outlet of the evaporator (14) are respectively connected to a circulation transport module; The thermoelectric cooling module comprises: Photovoltaic panel assembly (17) for generating electricity using solar energy; A digital control matcher (18) is electrically connected to the photovoltaic panel assembly (17) and is used to convert the voltage output by the photovoltaic panel assembly (17); A storage battery (20) is electrically connected to the digital control matcher (18) and is used to store the electrical energy generated by the photovoltaic panel assembly (17); The thermoelectric cooler (19) is electrically connected to the numerical control matcher (18). The thermoelectric cooler (19) has a cold end fin (21) and a hot end fin (22). The inlet and outlet of the cold end fin (21) are respectively connected to the circulation conveying module.

2. The all-vanadium redox flow battery cooling system according to claim 1, characterized in that: The heat storage tank (10) is connected to the two adsorbers (1) via a water pump (5); the second outlets of the two adsorbers (1) are connected to the first inlet of the cooler (4); the first outlet of the cooler (4) is respectively connected to the inlets of the two water pumps (5); the second inlet and the second outlet of the cooler (4) are connected to a cooling assembly; the outlet of each water pump (5) is connected to the inlet of a hot end fin (22); the outlet of the hot end fin (22) is connected to the first inlet of a heat recovery tank (8); the second inlet of the heat recovery tank (8) is respectively connected to the second outlets of the two adsorbers (1); and the outlet of the heat recovery tank (8) is connected to the inlet of the heat storage tank (10).

3. The all-vanadium redox flow battery cooling system according to claim 2, characterized in that: The cooling assembly comprises: A storage tank (3) stores cooling water therein, wherein the outlet of the storage tank (3) is connected to the second inlet of the cooler (4); The inlet of the cooling tower (6) is connected to the second outlet of the cooler (4).

4. The all-vanadium redox flow battery cooling system according to claim 3, characterized in that: It also includes an air cooling module (24), the air cooling module (24) including: A plurality of fans are provided in the battery stack of the all-vanadium liquid flow battery and are used for forced convection heat dissipation of the battery stack of the all-vanadium liquid flow battery.

5. The all-vanadium redox flow battery cooling system according to claim 4, characterized in that: The system further comprises a control module (7), wherein the control module (7) is electrically connected to a plurality of temperature sensors, and the plurality of temperature sensors are used to detect the temperature of the battery stack of the all-vanadium liquid flow battery and the temperature of the liquid storage tank (23) and to feed back the detected temperature to the control module (7). The control module (7) is electrically connected to a plurality of fans and two water pumps (5) respectively, and the control module (7) is used to control the start and stop of the plurality of fans and the two water pumps (5).

Images