A heat management device, battery swap station and energy storage power station

Abstract

The application discloses a heat management device, a battery swap station and an energy storage power station. The heat management device is used for adjusting the temperature of a battery in the power station, and comprises a heating module, a refrigeration module and a fluid circulation loop. The fluid circulation loop has a fluid therein, and comprises a heat exchange part, a fluid storage part and a refrigeration part. The heat exchange part is used for heat exchange with the battery, the fluid storage part is used for storing the fluid, the heating module is used for heating the fluid in the fluid storage part, and the refrigeration module is used for refrigerating the fluid in the refrigeration part. The heat management device can perform heat management on the battery in the power station, and help improve the performance and safety of the battery in the power station.

Description

Technical Field

[0001] This application relates to the field of thermal management, and more specifically, to a thermal management device, a battery swapping station, and an energy storage power station. Background Technology

[0002] Energy conservation and emission reduction are crucial for the sustainable development of the automotive industry. In this context, electric vehicles, due to their energy-saving and environmentally friendly advantages, have become an important component of the automotive industry's sustainable development. Batteries, as the primary energy storage component in electric vehicles, directly affect their performance.

[0003] Temperature is a crucial factor affecting battery lifespan and cycle performance. Excessively low temperatures can reduce battery charging and discharging efficiency, significantly degrading the overall performance of electric vehicles; excessively high temperatures can reduce battery charging and discharging capacity, potentially causing serious safety issues. Therefore, vehicle batteries are typically equipped with thermal management components to manage and regulate their temperature. However, existing thermal management components are designed specifically for vehicles. For applications where batteries are not located in vehicles and their thermal management components cannot operate independently (such as batteries in power stations), there is a lack of devices capable of providing efficient thermal management.

[0004] Application content

[0005] This application provides a thermal management device, a battery swapping station, and an energy storage power station, which can perform thermal management on the batteries in the power station, helping to improve the performance and safety of the batteries in the power station.

[0006] In a first aspect, a thermal management device is provided for regulating the temperature of a battery in a power station. The thermal management device includes a heating module, a cooling module, and a fluid circulation loop. The fluid circulation loop contains a fluid and includes a heat exchange section, a fluid storage section, and a cooling section. The heat exchange section is used to exchange heat with the battery, the fluid storage section is used to store the fluid, the heating module is used to heat the fluid in the fluid storage section, and the cooling module is used to cool the fluid in the cooling section.

[0007] This application provides a thermal management device comprising a fluid storage section and a cooling section, capable of heating or cooling the fluid in a fluid circulation loop to control the fluid temperature. The fluid circulation loop includes a heat exchange section capable of exchanging heat with the battery, thereby adjusting the battery temperature. This thermal management device effectively regulates the battery temperature in a power station, effectively mitigating situations where battery performance is affected or thermal runaway causes serious safety issues due to the inability of the battery's thermal management components to operate independently. This helps improve battery performance and safety in various application scenarios.

[0008] In some embodiments, the thermal management device includes a control module for controlling the heating module or the cooling module to heat or cool the fluid.

[0009] In the embodiments of this application, the automatic control of fluid temperature can be achieved by setting a control module, saving manpower and improving the working efficiency of the power plant.

[0010] In some embodiments, the heating module includes at least one heater for heating the fluid in the fluid storage section.

[0011] In the embodiments of this application, the heating module directly heats the fluid in the fluid storage section of the fluid circulation loop through a heater. The heater has high heat exchange efficiency and provides relatively uniform heating of the fluid, which helps to improve the heating efficiency of the heating module and thus helps to improve the working efficiency of the thermal management device.

[0012] In some embodiments, the refrigeration module includes: an evaporator for absorbing heat from the fluid in the refrigeration module; and at least one condenser connected to the evaporator for dissipating the heat absorbed by the evaporator.

[0013] In the embodiments of this application, the refrigeration module directly cools the fluid in the refrigeration section of the fluid circulation loop through the cooperation of the evaporator and condenser. This enables efficient heat exchange and has a better cooling effect compared with other refrigeration methods, which helps to improve the refrigeration efficiency of the refrigeration module and thus helps to improve the working efficiency of the thermal management device.

[0014] In some embodiments, the fluid storage portion includes an opening for replenishing the fluid to the fluid storage portion or discharging the fluid outside the fluid circulation loop.

[0015] In the embodiments of this application, by providing an opening in the fluid storage section, excess liquid in the fluid circulation loop can be promptly removed from the fluid circulation loop, or fluid can be promptly replenished into the fluid circulation loop to prevent insufficient fluid in the circulation from affecting the heat exchange performance of the thermal management device.

[0016] In some embodiments, the opening includes a fluid inlet and at least one fluid outlet, the fluid inlet being used to replenish the fluid to the fluid storage portion and the fluid outlet being used to discharge the fluid to the outside of the fluid circulation loop.

[0017] In the embodiments of this application, by providing multiple openings in the fluid storage section, namely a fluid inlet and at least one fluid outlet, the amount of fluid in the fluid circulation loop can be controlled more quickly and flexibly, further ensuring the heat exchange performance of the heat exchange device.

[0018] In some embodiments, the thermal management device includes: a first detection module for detecting a first temperature and a second temperature, wherein the first temperature is the temperature of the fluid at a first location in the fluid circulation loop, and the second temperature is the temperature of the fluid at a second location in the fluid circulation loop, wherein at the first location the fluid flows from the heat exchange section to the fluid storage section or the cooling section, and at the second location the fluid flows from the heat exchange section or the cooling section back to the heat exchange section; and a control module for controlling the heating module or the cooling module to heat or cool the fluid to raise or lower the second temperature.

[0019] In the embodiments of this application, by setting a first detection module, the thermal management device can obtain the temperature at the first and second positions in the fluid circulation loop in a timely manner, and quickly control the heating module and the cooling module through the control module so that the heating module and the cooling module heat or cool the fluid as needed, thereby achieving precise control of the battery temperature.

[0020] In some embodiments, the first position is located between the heat exchange section and the cooling section, and the second position is located between the heat exchange section and the fluid storage section.

[0021] In some embodiments, the thermal management device includes a flow regulation module for regulating the flow rate of the fluid in the fluid circulation loop.

[0022] In the embodiments of this application, by setting a flow regulation module, the flow rate of the fluid in the fluid circulation loop can be controlled, which can prevent the fluid circulation loop from being damaged by excessive flow rate or the heat exchange performance of the thermal management device from being affected by insufficient flow rate.

[0023] In some embodiments, the flow regulation module includes a switching valve disposed at the opening for regulating the flow rate of the fluid at the opening.

[0024] In some embodiments, the thermal management device further includes a second detection module for detecting a first pressure, wherein the first pressure is the pressure of the fluid at the second location.

[0025] In the embodiments of this application, by setting a second detection module, the pressure of the fluid at the second position in the fluid circulation loop can be detected, and the pressure of the fluid in the fluid circulation loop, especially the fluid about to flow into the heat exchange section, can be monitored. This enables the control module to accurately adjust the fluid pressure in the circulation loop based on the fluid pressure data detected by the second detection module, which helps to improve the overall performance of the thermal management device.

[0026] In some embodiments, the thermal management device includes a power module disposed in the fluid circulation loop for driving the fluid flow in the fluid circulation loop.

[0027] In some embodiments, the fluid includes at least one of water, purified water, brine solution, and liquid nitrogen.

[0028] In some embodiments, the power station is a battery swapping station, which includes at least one battery cabinet, in which the battery is disposed, and the heat exchange section is connected to or disposed around the battery's thermal management components.

[0029] In some embodiments, the power station is an energy storage power station, which includes at least one electrical cabinet, the battery is disposed in the electrical cabinet, and the heat exchange section is connected to or disposed around the thermal management components of the battery.

[0030] In the embodiments of this application, a power station is equipped with an electrical cabinet, and the battery is placed inside the electrical cabinet. The heat exchange part of the fluid circulation loop in the thermal management device is directly connected to the thermal management component of the battery or is placed around the electrical cabinet. The temperature of the battery in the electrical cabinet can be precisely controlled by directly replacing the fluid in the thermal management component of the battery or by controlling the ambient temperature around the electrical cabinet.

[0031] In some embodiments, the control module is configured to control the heating module to heat the fluid to increase the second temperature when the first temperature is less than a first threshold.

[0032] In some embodiments, the control module is configured to control the cooling module to cool the fluid to reduce the second temperature when the first temperature is greater than a second threshold.

[0033] In the embodiments of this application, when the first temperature is less than a first threshold and greater than a second threshold, the control module controls the heating module and the cooling module to work to adjust the temperature of the fluid, thereby accurately controlling the temperature of the fluid within a range greater than the second threshold and less than the first threshold, thereby controlling the battery temperature to be stable within a certain range. This range can be the temperature range within which the battery can maintain efficient cycle performance and ensure safety. Thus, the thermal management device can effectively manage the thermal performance of the battery in the power station.

[0034] In some embodiments, the control module is used to control the heating module to heat the fluid to raise the second temperature to a first preset temperature, wherein the first preset temperature is greater than or equal to the first threshold and less than or equal to the second threshold.

[0035] In the embodiments of this application, the control module controls the heating module to raise the temperature of the fluid to a first preset temperature, that is, controls the heating module to directly heat the fluid to a preset value. This preset value is within the temperature range formed by the second threshold and the first threshold, thereby controlling the fluid temperature within the required temperature range and thus achieving effective control of the battery temperature.

[0036] In some embodiments, the control module is used to control the heating module to heat the fluid to raise the second temperature to a second preset temperature; the second preset temperature is the first preset temperature plus a first preset value, and the first preset value is set according to at least one of the ambient temperature, the distance of the second position from the battery, and the length of the fluid circulation loop between the second position and the battery.

[0037] In the embodiments of this application, considering the influence of factors such as ambient temperature, the distance between the second position and the battery, and the length of the fluid circulation loop on temperature, the control module controls the heating module to raise the fluid temperature to a second preset temperature. This second preset temperature is higher than the first preset temperature and may not fall within the temperature range formed by the second and first thresholds. However, the second preset temperature can effectively compensate for heat loss along the path of the fluid from the second position to the thermal management component entering the battery or reaching the vicinity of the battery due to the aforementioned factors. Therefore, the thermal management device can more accurately control the battery temperature, improving the performance of the thermal management device.

[0038] In some embodiments, the control module is used to control the refrigeration module to cool the fluid so that the second temperature is reduced to a first preset temperature.

[0039] In some embodiments, the control module is used to control the cooling module to cool the fluid so that the second temperature is reduced to a third preset temperature; the third preset temperature is the first preset temperature minus a second preset value, and the second preset value is set according to at least one of the ambient temperature, the distance of the second position from the battery, and the length of the fluid circulation loop between the second position and the battery.

[0040] In the embodiments of this application, similar to the heating module, the cooling module can directly reduce the second temperature to the first preset temperature, i.e., directly reduce it to the required temperature range, or it can reduce the second temperature to a third preset temperature. The third preset temperature is lower than the first preset temperature and may not fall within the temperature range formed by the second and first thresholds. However, the third preset temperature can effectively compensate for the heat absorbed by the fluid along its path from the second position to the thermal management component of the battery or to the vicinity of the battery under the influence of the aforementioned factors. Therefore, the thermal management device can more accurately control the battery temperature and improve the performance of the thermal management device.

[0041] In some embodiments, the control module is configured to control the flow regulation module to increase the flow rate until the first pressure is greater than or equal to the third threshold when the first pressure is less than the third threshold; or to control the flow regulation module to decrease the flow rate until the first pressure is less than or equal to the fourth threshold when the first pressure is greater than the fourth threshold.

[0042] In the embodiments of this application, the control module can also control the flow regulation module to regulate the pressure of the fluid in the fluid circulation loop when the first pressure is less than the third threshold and greater than the fourth threshold, so as to efficiently and accurately regulate the pressure in the fluid circulation loop and further improve the overall performance of the thermal management device.

[0043] In a second aspect, a battery swapping station is provided, the battery swapping station including a thermal management device as described in any embodiment of the first aspect.

[0044] Thirdly, an energy storage power station is provided, the energy storage power station including the thermal management device as described in any embodiment of the first aspect. Attached Figure Description

[0045] To more clearly illustrate the technical solutions of the embodiments of this application, the drawings used in the embodiments of this application will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on the drawings without creative effort.

[0046] Figure 1 This is a schematic structural diagram of an electrical device according to this application;

[0047] Figure 2 This is a schematic structural diagram of a battery according to this application;

[0048] Figure 3 This is a schematic structural diagram of a thermal management device according to this application;

[0049] Figure 4 This is a schematic structural diagram of a power plant according to this application;

[0050] Figure 5 This is another schematic structural diagram of a thermal management device according to this application;

[0051] Figure 6 This is a schematic structural diagram of a battery swapping station according to this application;

[0052] Figure 7 This is a schematic structural diagram of an energy storage power station according to this application. Detailed Implementation

[0053] The embodiments of this application will be described in further detail below with reference to the accompanying drawings and examples. The detailed description of the following embodiments and the accompanying drawings are used to illustrate the principles of this application by way of example, but should not be used to limit the scope of this application, that is, this application is not limited to the described embodiments.

[0054] In the description of this application, it should be noted that, unless otherwise stated, "a plurality of" means two or more; the terms "upper," "lower," "left," "right," "inner," and "outer," etc., indicating orientation or positional relationships, are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation on this application. Furthermore, the terms "first," "second," and "third," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance. "Vertical" is not vertical in the strict sense, but within the allowable tolerance range. "Parallel" is not parallel in the strict sense, but within the allowable tolerance range.

[0055] The directional terms used in the following description refer to the directions shown in the figures and are not intended to limit the specific structure of this application. It should also be noted in the description of this application that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a direct connection or an indirect connection through an intermediate medium. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.

[0056] In this application, the term "and / or" is merely a description of the relationship between related objects, indicating that three relationships can exist. For example, A and / or B can represent three possibilities: A exists, A and B exist simultaneously, and B exists. Additionally, in this application, the character " / " generally indicates that the preceding and following related objects have an "or" relationship.

[0057] Unless otherwise defined, all technical and scientific terms used in this application have the same meaning as commonly understood by one of ordinary skill in the art to which this application pertains; the terminology used in the description of this application is for the purpose of describing particular embodiments only and is not intended to limit the application; the terms "comprising" and "having," and any variations thereof, in the description, claims, and accompanying drawings of this application are intended to cover non-exclusive inclusion. The terms "first," "second," etc., in the description, claims, or accompanying drawings of this application are used to distinguish different objects, not to describe a specific order or hierarchy.

[0058] In this application, the reference to "embodiment" means that a specific feature, structure, or characteristic described in connection with an embodiment may be included in at least one embodiment of this application. The appearance of this phrase in various places throughout the specification does not necessarily refer to the same embodiment, nor is it a mutually exclusive, independent, or alternative embodiment. It will be explicitly and implicitly understood by those skilled in the art that the embodiments described in this application can be combined with other embodiments.

[0059] In this application, "multiple" refers to two or more (including two), similarly, "multiple groups" refers to two or more (including two groups), "multiple pieces" refers to two or more (including two pieces), and "multiple columns" refers to two or more (including two columns).

[0060] In an automotive industry that relies on traditional energy sources, actively developing new energy vehicles can reduce environmental harm. For new energy vehicles, battery technology is a crucial factor in their development.

[0061] my country has a vast territory with diverse climates and temperatures. Temperature is a crucial factor affecting battery cycle performance and safety. In practical production and daily life, excessively low battery temperatures can lead to lower cycle performance and capacity retention; excessively high battery temperatures can cause unnecessary side reactions within the battery, resulting in reduced capacity and, in severe cases, battery safety issues. Therefore, battery thermal management is a vital component of battery technology.

[0062] Currently, battery thermal management is typically achieved by equipping batteries with thermal management components. For example, fans and air ducts are installed around the battery, or water-cooled plates are installed and connected to the vehicle's moving parts or water supply system to manage battery thermal performance. However, in situations where batteries are not located within a vehicle (e.g., batteries in a power station), the battery's own thermal management components may not function, thus failing to provide effective thermal management.

[0063] In view of this, this application provides a thermal management device that can effectively manage the thermal properties of batteries in a power station, helping to improve the performance and safety of batteries in the power station and further expand the application range of batteries.

[0064] like Figure 1 The diagram shows a structural schematic of a vehicle 1 according to this application. Vehicle 1 can be a gasoline-powered vehicle, a natural gas-powered vehicle, or a new energy vehicle. New energy vehicles can be pure electric vehicles, hybrid electric vehicles, or range-extended electric vehicles, etc. A motor 11, a controller 12, and a battery 10 can be installed inside vehicle 1. The controller 12 controls the battery 10 to supply power to the motor 11. For example, the battery 10 can be installed at the bottom, front, or rear of vehicle 1. The battery 10 can be used to power vehicle 1. For example, the battery 10 can serve as the operating power source for vehicle 1, for example, for the electrical system of vehicle 1, such as for the power requirements of vehicle 1's starting, navigation, and operation. In another embodiment of this application, the battery 10 can not only serve as the operating power source for vehicle 1, but also as the driving power source for vehicle 1, replacing or partially replacing gasoline or natural gas to provide driving power for vehicle 1.

[0065] It should be understood that this application uses a vehicle as an example of an electrical device, but electrical devices can also include mobile phones, portable devices, laptops, ships, spacecraft, electric toys, and power tools, etc. Vehicles can be gasoline-powered cars, natural gas-powered cars, or new energy vehicles; new energy vehicles can be pure electric vehicles, hybrid electric vehicles, or range-extended electric vehicles, etc.; spacecraft include airplanes, rockets, space shuttles, and spacecraft, etc.; electric toys include stationary or mobile electric toys, such as game consoles, electric car toys, electric ship toys, and electric airplane toys, etc.; power tools include metal cutting power tools, grinding power tools, assembly power tools, and railway power tools, such as electric drills, electric grinders, electric wrenches, electric screwdrivers, electric hammers, impact drills, concrete vibrators, and electric planers, etc. This application does not impose any special limitations on the above-mentioned electrical devices.

[0066] In this application, a battery refers to a physical module comprising one or more battery cells to provide electrical energy. For example, the battery mentioned in this application may include a battery module or a battery pack. A battery generally includes a casing for encapsulating one or more battery cells. The casing prevents liquids or other foreign matter from affecting the charging or discharging of the battery cells.

[0067] To meet diverse power demands, a battery can comprise multiple individual cells, which can be connected in series, parallel, or a combination of both. A battery can also be called a battery pack. Optionally, multiple individual cells can first be connected in series, parallel, or a combination of both to form a battery module, and then multiple battery modules can be connected in series, parallel, or a combination of both to form a battery. In other words, multiple individual cells can be directly assembled into a battery, or they can first be assembled into battery modules, and then the battery modules can be assembled into a battery.

[0068] For example, such as Figure 2 The diagram shown is a structural schematic of a battery 10 according to this application. The battery 10 may include multiple battery cells 20. The number of battery cells 20 can be set to any value. Multiple battery cells 20 can be connected in series, parallel, or mixed to achieve a larger capacity or power.

[0069] Optionally, the battery cell 20 may include a lithium-ion secondary battery, a lithium-ion primary battery, a lithium-sulfur battery, a sodium-lithium-ion battery, a sodium-ion battery, or a magnesium-ion battery, etc., and this application embodiment is not limited thereto. In some embodiments, the battery cell 20 may also be referred to as a battery cell.

[0070] The battery cell 20 includes an electrode assembly and an electrolyte. The electrode assembly consists of a positive electrode, a negative electrode, and a separator. The battery cell primarily functions by the movement of metal ions between the positive and negative electrode plates. The positive electrode includes a positive current collector and a positive active material layer. The positive active material layer is coated on the surface of the positive current collector. The current collector without the positive active material layer protrudes from the current collector with the positive active material layer, and serves as the positive electrode tab. Taking a lithium-ion battery as an example, the material of the positive current collector can be aluminum, and the positive active material can be lithium cobalt oxide, lithium iron phosphate, ternary lithium, or lithium manganese oxide, etc. The negative electrode includes a negative current collector and a negative active material layer. The negative active material layer is coated on the surface of the negative current collector. The current collector without the negative active material layer protrudes from the current collector with the negative active material layer, and serves as the negative electrode tab. The material of the negative current collector can be copper, and the negative active material can be carbon or silicon, etc. To ensure that a large current can be carried without melting, multiple positive electrode tabs are stacked together, and multiple negative electrode tabs are stacked together. The diaphragm can be made of polypropylene (PP) or polyethylene (PE), etc. Furthermore, the electrode assembly can be a wound structure or a stacked structure; the embodiments of this application are not limited to these.

[0071] Optionally, the battery 10 further includes a housing, a battery management system, and related mounting components. The battery management system includes thermal management components.

[0072] The thermal management device 300 of the present application embodiment will be described next.

[0073] Figure 3 This is a schematic structural diagram of a thermal management device 300 according to an embodiment of this application. The thermal management device 300 is used to regulate the temperature of batteries in a power station.

[0074] like Figure 3 As shown, the thermal management device 300 includes a heating module 301, a cooling module 302, and a fluid circulation loop 303. The fluid circulation loop 303 contains fluid and includes a heat exchange section 3031, a fluid storage section 3032, and a cooling section 3033. The heat exchange section 3031 is used for heat exchange with the battery 10, and the fluid storage section 3032 is used for storing the fluid. The heating module 301 is used to heat the fluid in the fluid storage section 3032, and the cooling module 303 is used to cool the fluid in the cooling section 3033.

[0075] Specifically, the thermal management device 300 is applied in scenarios where the thermal management components of the battery 10 itself cannot function properly, especially in applications such as power plants. The thermal management device 300 heats or cools the fluid in the fluid circulation loop 303 through the heating module 301 and the cooling module 302. The fluid in the fluid circulation loop 303 flows from the fluid storage section 3032 or the cooling section 3033 to the heat exchange section 3031 and then flows back to the fluid storage section 3032 or the cooling section 3033. In the heat exchange section 3031, the fluid exchanges heat with the battery 10. Thus, the thermal management device 300 can effectively control the temperature of the battery 10 by heating or cooling the fluid.

[0076] It should be understood that the fluid circulation loop 303 can be a circulation loop formed by connecting the heat exchange section 3031, the heating section 3032, and the cooling section 3033 in series; or it can be as follows: Figure 3 As shown, the heat exchange section 3031 forms a circulation loop with the heating section 3032 and the cooling section 3033 respectively. Figure 3 This application only illustrates one possible scenario and does not limit the scope of the embodiments described herein.

[0077] In this embodiment, on the one hand, the thermal management device 300 can control the temperature of the battery 10 in the power station, solving the problem that the battery 10 cannot effectively manage its thermal performance because its own thermal management components cannot work independently. This improves the performance and safety of the battery 10 in the power station, reducing the risk of performance degradation or safety hazards caused by excessively high or low temperatures, thereby helping to improve the safety of the power station. On the other hand, the thermal management device 300 controls the temperature of the battery 10 by controlling the temperature of a fluid. Compared with other thermal management methods such as air cooling, the thermal conversion efficiency and temperature control accuracy of the fluid are high, enabling the temperature of the battery 10 to be controlled within a suitable range, thus improving the thermal management efficiency and effect of the thermal management device 300.

[0078] Figure 4 This is a schematic structural diagram of a power plant 400 as an example of its own implementation.

[0079] Optionally, the power station 400 is a battery swapping station, which includes at least one battery cabinet 401, in which the battery 10 is disposed, and the heat exchange part 3031 is connected to or disposed around the thermal management component of the battery 10.

[0080] Specifically, when the battery 10 includes a thermal management component, the heat exchange portion 3031 of the fluid circulation loop 303 in the thermal management device 300 can be directly connected to the thermal management component of the battery 10, for example, to the water-cooling plate of the battery 10. Alternatively, when coolant is filled between the battery cells 20, it can be connected to the coolant inlet and outlet of the battery 10. The thermal management component of the battery 10 described in this application refers to a thermal management component based on fluid cooling or heating. The thermal management device 300 is directly connected to the thermal management component of the battery 10, and can replace the fluid in the thermal management component with the fluid in the fluid circulation loop 303, thereby achieving effective thermal management of the battery 10 in the power station 400 by controlling the temperature of the fluid in the fluid circulation loop 303.

[0081] In the absence of corresponding thermal management components for the battery 10, the heat exchange portion 3031 of the fluid circulation loop 303 in the thermal management device 300 is arranged around the electrical cabinet 401, and the battery 10 is arranged in the electrical cabinet 401. By arranging the heat exchange portion 3031 of the fluid circulation loop 303 around the electrical cabinet 401, the ambient temperature around the battery 10 can be effectively controlled, thereby achieving effective thermal management of the battery 10 in the power station 400 by the influence of the ambient temperature on the temperature of the battery 10.

[0082] In this embodiment, by directly connecting the heat exchange portion 3031 of the fluid circulation loop 303 to the thermal management component of the battery 10, or by placing the heat exchange portion 3031 around the electrical cabinet 400 of the battery swapping station, the temperature of the battery 10 can be controlled within a relatively precise range by the temperature of the fluid in the fluid circulation loop 303, thereby achieving precise control of the temperature of the battery 10 in the power station 400.

[0083] Optionally, the power station 400 is an energy storage power station, which includes at least one cabinet 401, in which the battery 10 is disposed, and the heat exchange part 3031 is connected to or disposed around the thermal management component of the battery 10.

[0084] Optionally, in some other embodiments, the power station 400 is a substation, and the battery swapping station includes at least one electrical cabinet 401, in which the battery 10 is disposed, and the heat exchange section 3031 is connected to or disposed around the thermal management component of the battery 10.

[0085] Optionally, please continue to see Figure 3 The thermal management device 300 includes a control module 304, which is used to control the heating module 301 to heat the fluid or control the cooling module 302 to cool the fluid.

[0086] Specifically, the control module 304 can be a microcontroller, the main controller of the power station 400, or a microcontroller connected to the main controller of the power station 400. For example, the control module 304 includes a memory, a processor, a communication interface, etc.

[0087] The memory can be read-only memory (ROM), static storage device, or random access memory (RAM), and computer programs can be stored in the memory.

[0088] The processor can be a general-purpose central processing unit (CPU), microprocessor, application-specific integrated circuit (ASIC), graphics processing unit (GPU), or one or more integrated circuits, used to execute relevant programs to achieve the functions required by the units and modules in the thermal management device of this application embodiment.

[0089] The processor can also be an integrated circuit chip with signal processing capabilities. In implementation, the functions to be performed by the units and modules in the thermal management device of this application embodiment can be accomplished through integrated logic circuits in the processor's hardware or through software instructions.

[0090] The aforementioned processor can also be a general-purpose processor, a digital signal processor (DSP), an ASIC, a field-programmable gate array (FPGA), or other programmable logic devices, discrete gate or transistor logic devices, or discrete hardware components. It can implement or execute the methods, steps, and logic block diagrams disclosed in the embodiments of this application. The general-purpose processor can be a microprocessor or any conventional processor. The steps of the methods disclosed in the embodiments of this application can be directly embodied in the execution of hardware processors, or can be executed by a combination of hardware and software modules in the processor. The software modules can reside in random access memory, flash memory, read-only memory, programmable read-only memory, electrically erasable programmable memory, registers, or other mature storage media in the art. This storage medium is located in memory; the processor reads information from the memory and, in conjunction with its hardware, completes the functions required by the units and modules included in the apparatus of the embodiments of this application.

[0091] It should be noted that although the control module 304 described above only mentions memory, processor, and communication interface, those skilled in the art should understand that, in specific implementations, the control module 304 may also include hardware devices for implementing other additional functions, depending on specific needs. Furthermore, those skilled in the art should understand that the control module 304 may also only include the devices necessary for implementing the embodiments of this application.

[0092] In this embodiment, by setting a control module 304 in the thermal management device 300, the automatic control of the fluid temperature can be realized, thereby automatically controlling the temperature of the battery 10, which effectively improves the working efficiency of the thermal management device 300 and the power station 400.

[0093] Figure 5 This is another schematic structural diagram of a thermal management device 300 according to an embodiment of this application.

[0094] like Figure 5 As shown, optionally, the heating module 301 includes at least one heater 3011 for heating the fluid in the fluid storage section 3032.

[0095] Specifically, the fluid storage section 3032 can be a water tank, a water reservoir, etc. The heater 3011 can be directly installed in the fluid storage section 3032 and in direct contact with the fluid in the fluid storage section 3032. When the heater 3011 is working, it directly heats the fluid in the fluid storage section 3032. Alternatively, the heater 3011 can be installed around the fluid storage section 3032 and in contact with the fluid storage section 3032. When the heater 3011 is working, it heats the fluid in the fluid storage section 3032 by heating the outer wall of the fluid storage section 3032.

[0096] It should be understood that although the fluid storage section 3032 can be a water tank, a reservoir, etc., the water tank or reservoir described in this application does not limit the fluid contained therein. In other words, the fluid in the water tank can be water or other fluids, and the same applies to the reservoir.

[0097] Optionally, in one embodiment, the heater 3011 is an electric heater. The electric heater has a heating tube or heating plate, which is disposed directly in the fluid storage portion 3032 or around the outer wall of the fluid storage portion 3032.

[0098] In this embodiment, the heating module 301 uses an electric heater to heat the fluid in the fluid storage section of the fluid circulation loop. The electric heater has high heat exchange efficiency and heats the fluid more evenly, which helps to improve the heating efficiency of the heating module 301 and improve the heating performance and working efficiency of the thermal management device 300.

[0099] Preferably, the electric heater is an electric heater in the form of a heating tube, which is smaller in size and shape, which helps in the overall arrangement of the thermal management device 300 and helps save space in the thermal management device 300.

[0100] Optionally, the power of the electric heater is 10-50kW.

[0101] Optionally, in one embodiment, the heater 3011 is an infrared heater. The infrared heater has a heating tube or heating plate that is directly disposed in the fluid storage portion 3032 or disposed around the outer wall of the fluid storage portion 3032.

[0102] Please continue reading Figure 5 Optionally, the refrigeration module 302 includes an evaporator 3021 and at least one condenser 3022, wherein the evaporator 3021 is connected to the condenser 3022, and the evaporator 3021 is used to absorb heat from the fluid in the refrigeration module 302, and the condenser 3022 is used to discharge the heat absorbed by the evaporator 3021.

[0103] Specifically, the refrigeration module 302 contains a refrigerant, which can be at least one of the following: saturated hydrocarbons such as fluorine, chlorine, bromine derivatives, hydrocarbons, ammonia, hydrogen, and helium. This application embodiment does not limit the type of refrigerant. The refrigeration section of the fluid circulation loop 303 in the thermal management device 300 is located in the evaporator 3021 of the refrigeration module 302. When the refrigeration module 302 is working, the refrigerant in the evaporator 3021 absorbs heat from the refrigeration section 3033 of the fluid circulation loop 303 and vaporizes, thereby cooling the fluid in the refrigeration section 3033. After absorbing heat and vaporizing, the refrigerant in the evaporator 3021 enters the condenser 3022, where it condenses and liquefies, changing from a gaseous state to a liquid state and releasing heat, i.e., dissipating the heat absorbed by the evaporator 3021.

[0104] In this embodiment, the refrigeration module 302 has an evaporator 3021 and a condenser 3022. The two work together to cool the refrigeration part 3033 of the fluid circulation loop 303. This refrigeration method has high heat exchange efficiency and good refrigeration effect, which helps to improve the refrigeration efficiency of the refrigeration module 303 and helps to improve the refrigeration performance and working efficiency of the thermal management device 300.

[0105] Optionally, the condenser 3022 includes a compressor for compressing the gaseous refrigerant in the condenser to liquefy the refrigerant and release heat.

[0106] Optionally, the compressor power of condenser 3022 is 1-10kW.

[0107] Please continue reading Figure 5Optionally, the fluid storage section 3032 includes an opening 3032a for replenishing fluid into the fluid storage section 3032 or discharging fluid out of the fluid circulation loop 303.

[0108] Specifically, the fluid storage section 3032 may be provided with one or more openings 3032a. When one opening 3032a is provided, the opening 3032a can serve as both a fluid inlet and a fluid outlet. Depending on the usage requirements of the thermal management device 300, fluid can be added to or discharged from the fluid storage section 3032 through the opening 3032a, enabling the fluid circulation loop 303 of the thermal management device 300 to operate stably.

[0109] In this embodiment, by providing an opening 3032a in the fluid storage section 3032, the amount of fluid in the fluid storage section 3032 can be flexibly controlled, thereby achieving flexible control of the total amount of fluid in the fluid circulation loop 303. This effectively avoids the situation where the thermal management device 300 cannot efficiently control the temperature of the battery 10 due to insufficient fluid in the fluid circulation loop 303, or avoids damage to the fluid circulation loop 303 due to excessive fluid or excessive pressure, thus helping to improve the service life of the thermal management device 300.

[0110] Preferably, the opening 3032a includes a fluid inlet and at least one fluid outlet. The fluid inlet is used to replenish fluid into the fluid storage section 3032, and the fluid outlet is used to discharge fluid out of the fluid circulation loop 303.

[0111] Specifically, the fluid storage section 3032 may be provided with multiple openings 3032a, namely, a fluid inlet and at least one fluid outlet. The fluid inlet is positioned higher than the fluid outlet on the fluid storage section 3032. For example, when the fluid storage section 303 is a cubic box, the fluid inlet may be located on the top wall of the box, while the fluid outlet may be located on the side wall of the box. The fluid inlet being located on the top wall of the box facilitates the inflow of fluid into the fluid storage section 3032 under gravity, while the fluid outlet being located on the side wall of the box facilitates the outflow of fluid from the fluid storage section 3032 under gravity. Thus, fluid can be added to or discharged from the fluid storage section 3032 without the aid of external force.

[0112] In this embodiment, on the one hand, providing multiple openings 3032a in the fluid storage section 3032 helps to improve the control efficiency of the total amount of fluid in the fluid circulation loop 303; on the other hand, gravity can be used to replenish and discharge the fluid in the fluid storage section 3032, saving the power consumption caused by fluid replenishment and discharge, and helping to improve the working efficiency of the thermal management device.

[0113] Please continue reading Figure 5 ,like Figure 5 As shown, the thermal management device 300 includes a first detection module 305 for detecting a first temperature T1 and a second temperature T2. The first temperature T1 is the temperature of the fluid at a first position P1 in the fluid circulation loop 303; the second temperature T2 is the temperature of the fluid at a second position P2 in the fluid circulation loop 303. At the first position P1, fluid flows from the heat exchange section 3031 to the fluid storage section 3032 or to the cooling section 3033; at the second position P2, fluid flows from the fluid storage section 3032 or the cooling section 3033 to the heat exchange section 3031.

[0114] Optionally, the control module 304 is used to control the heating module 301 or the cooling module 302 to heat or cool the fluid so that the second temperature T2 increases or decreases.

[0115] Specifically, at the first position P1, fluid flows from the heat exchange section 3031 to the fluid storage section 3032 or to the cooling section 3033. In other words, the first position P1 is the outlet of the heat exchange section 3031 and the inlet of the fluid storage section 3032 or the cooling section 3033. At the second position P2, fluid flows from the fluid storage section 3032 or the cooling section 3033 to the heat exchange section 3031. In other words, the second position P2 is the inlet of the heat exchange section 3031 and the outlet of the fluid storage section 3032 or the cooling section 3033. The temperature at the first position P1 is the temperature of the fluid after heat exchange, reflecting the current temperature of the battery 10. The temperature at the second position P2 is the temperature of the fluid that is about to flow into the heat exchange section 3031 to exchange heat with the battery 10, reflecting the desired temperature reached by the battery 10. The first detection module 305 includes at least two detection units 3051, which detect the temperature of the fluid at different positions.

[0116] In this embodiment, by setting the first detection module 305, the thermal management device 300 can obtain the first temperature T1 of the fluid at the first position P1 and the second temperature T2 of the fluid at the second position P2 in the fluid circulation loop 303 in a timely manner. Thus, it can determine whether the current temperature of the battery 10 is too hot or too cold by using the first temperature T1, and by heating or cooling the fluid, the second temperature T2 is made to flow back into the fluid circulation loop 3031 at the desired temperature to adjust the temperature of the battery 10. Therefore, the thermal management device 300 can accurately and timely regulate the temperature of the battery 10.

[0117] Optionally, the first position P1 is located between the heat exchange section 3031 and the cooling section 3033, and the second position P2 is located between the heat exchange section 3031 and the fluid storage section 3032.

[0118] Optionally, the thermal management device 300 includes a flow regulation module 306 for regulating the flow rate of fluid in the fluid circulation loop 303.

[0119] Optionally, the flow regulation module 306 includes a switching valve 3061, which is disposed at the opening 3032a and is used to regulate the flow rate of the fluid at the opening 3032a.

[0120] Optionally, the switching valve 3061 is located at the second position P2 to regulate the flow rate of the fluid at the inlet of the heat exchange section 3031.

[0121] In this embodiment, by setting the flow regulation module 306, the flow rate of the fluid in the fluid circulation loop 303 can be flexibly controlled, avoiding damage to the fluid circulation loop 303 due to excessive flow rate, or affecting the heat exchange between the heat exchange section 3031 and the battery 10 due to insufficient flow rate, thus helping to improve the heat exchange performance of the thermal management device 300 and extend the service life of the thermal management device 300.

[0122] Optionally, see Figure 5 The thermal management device also includes a second detection module 307 for detecting a first pressure p, which is the pressure p of the fluid at the second position P2.

[0123] Specifically, the first pressure p of the fluid at the second position P2 reflects the current pressure of the fluid in the heat exchange section 3031. Obtaining the first pressure p helps the thermal management device 300 adjust the flow rate of the fluid in the fluid circulation loop 303 in a timely manner according to the pressure of the heat exchange section 3031, thereby ensuring a safe and efficient heat exchange process between the battery 10 and the fluid. The second detection module 307 may include multiple pressure detection units to detect the pressure of the fluid at different positions in the fluid circulation loop 303, enabling the thermal management device 300 to adjust the flow rate of the fluid in the fluid circulation loop 303 according to the pressure of the fluid at different positions.

[0124] In this embodiment, by setting the second detection module 307, the thermal management device 300 can accurately regulate the pressure in the fluid circulation loop according to the fluid pressure data, which helps to improve the overall performance of the thermal management device 300.

[0125] Optionally, the thermal management device 300 includes a power module (not shown in the figure), which is disposed in the fluid circulation loop 303 and is used to drive the fluid flow in the fluid circulation loop 303.

[0126] Specifically, the power module may include one or more power units. Taking a liquid pump as an example, the liquid pump can be set at different positions in the fluid circulation loop 303 to drive the fluid to flow in the fluid circulation loop 303. When the power module includes only one power unit, the power unit can be set at the second position P2 to drive the fluid to enter the heat exchange section 3031 in a timely manner.

[0127] Optionally, the fluid includes at least one of water, pure water, brine solution, and liquid nitrogen.

[0128] Next, we will further explain how the control module 304 controls the temperature of the fluid.

[0129] Optionally, the control module 304 is used to control the heating module 301 to heat the fluid to raise the second temperature T2 when the first temperature T1 is less than the first threshold.

[0130] Optionally, the control module 304 is used to control the cooling fluid of the cooling module 302 to reduce the second temperature T2 when the first temperature T1 is greater than the second threshold.

[0131] Specifically, the second threshold is greater than the first threshold, and the temperature range between the first and second thresholds is the suitable temperature range for the battery. When the first temperature T1 is less than the first threshold, it indicates that the battery 10 temperature is too low and needs to be raised; when the first temperature T1 is greater than the second threshold, it indicates that the battery 10 temperature is too high and needs to be cooled. The control module controls the heating module 301 and the cooling module 302 according to the first temperature T1, and promptly raises or lowers the temperature of the fluid in the fluid circulation loop when the first temperature T1 does not fall within the range between the first and second thresholds, thereby raising or lowering the temperature of the battery 10.

[0132] For example, the first threshold is greater than or equal to 10°C and less than or equal to 20°C; the second threshold is greater than or equal to 45°C and less than or equal to 55°C.

[0133] In this embodiment, the control module 304 adjusts and precisely controls the second temperature T2 of the fluid according to the first temperature T1 of the fluid, thereby controlling the temperature of the battery 10 to be stable within a certain range. This range is the temperature range within which the battery 10 can maintain efficient cycle performance and ensure safety. Thus, the thermal management device 300 can effectively manage the thermal of the battery in the power station.

[0134] Optionally, the control module 304 is used to control the heating module 301 to heat the fluid so that the second temperature T2 rises to a first preset temperature, the first preset temperature being greater than or equal to a first threshold and less than or equal to a second threshold.

[0135] Optionally, the control module 304 is used to control the heating module 301 to heat the fluid so that the second temperature T2 rises to a second preset temperature. The second preset temperature is the first preset temperature plus a first preset value. The first preset value is set according to at least one of the ambient temperature, the distance between the second position screen and the battery 10, and the length of the fluid circulation loop 303 between the second position P2 and the battery 10.

[0136] Specifically, when the control module 304 controls the heating module 301 to heat the fluid, it can directly cause the heating module 301 to heat the fluid's second temperature T2 to the first preset temperature, i.e., the temperature range between the first threshold and the second threshold. Considering that factors such as ambient temperature, the distance between the second position P2 and the battery 10, and the length of the fluid circulation loop 303 between the second position P2 and the battery 10 affect the fluid temperature in the fluid circulation loop 303, for example, if the ambient temperature is too high or too low, the distance between the second position P2 and the battery 10 is too far, or the length of the fluid circulation loop 303 between the second position P2 and the battery 10 is too long, the fluid will experience heat loss during its flow from the second position P2 to the heat exchange section 3031, resulting in the fluid temperature in the heat exchange section 3031 heating the battery 10 being lower than the second temperature T2. Based on this, when the control module 304 controls the heating module 301 to heat the fluid, the heating module 301 can heat the fluid's second temperature T2 to a second preset temperature, which is higher than the first preset temperature. This can compensate for the fluid heat loss caused by the above factors, so that the temperature of the fluid that exchanges heat with the battery 10 is within the temperature range of the first threshold to the second threshold.

[0137] Optionally, the control module 304 is used to control the cooling fluid in the cooling module 302 to reduce the second temperature T2 to the first preset temperature.

[0138] Optionally, the control module 304 is used to control the cooling fluid of the cooling module 302 to reduce the second temperature T2 to a third preset temperature. The third preset temperature is the first preset temperature minus a second preset value. The second preset value is set according to at least one of the ambient temperature, the distance of the second position P2 from the battery 10, and the length of the fluid circulation loop 303 between the second position P2 and the battery 10.

[0139] Specifically, similar to the control method of the heating module 301, when the control module 304 controls the cooling module 302 to cool the fluid, it can directly cause the cooling module 302 to lower the second temperature T2 of the fluid to a first preset temperature; or it can cause the cooling module 302 to lower the second temperature T2 of the fluid to a third preset temperature, where the third preset temperature is lower than the first preset temperature. This compensates for the temperature rise caused by the fluid absorbing heat as it flows from the second position P2 to the heat exchange section 3031, due to factors such as excessively high ambient temperature, a large distance between the second position P2 and the battery 10, or an excessively long fluid circulation loop 303 between the second position P2 and the battery 10. This ensures that the temperature of the fluid exchanging heat with the battery 10 is within the range of the first threshold to the second threshold.

[0140] Optionally, the control module 304 is used to control the flow regulation module 306 to increase the flow rate until the first pressure p is greater than or equal to the third threshold when the first pressure p is less than the third threshold; or to control the flow regulation module 306 to decrease the flow rate until the first pressure p is less than or equal to the fourth threshold when the first pressure is greater than the fourth threshold.

[0141] Specifically, the range from the third threshold to the fourth threshold is the pressure range that enables the thermal management device 300 to have safe and efficient heat exchange efficiency. If the first pressure p is less than the third threshold, it means that the fluid pressure is low and the fluid flow rate is insufficient, which may result in low heat exchange efficiency. Therefore, it is necessary to increase the flow rate to increase the pressure. If the first pressure p is greater than the fourth threshold, it means that the fluid pressure is high, which may affect the heat exchange efficiency or damage the fluid circulation loop 303. Therefore, it is necessary to reduce the flow rate to reduce the pressure.

[0142] In this embodiment, the control module 304 regulates the pressure of the fluid flowing into the heat exchange section 3031 according to the first pressure p at the second position P2, which can timely and accurately regulate the pressure in the fluid circulation loop 303, further improving the overall performance of the thermal management device 300.

[0143] This application also includes an embodiment of a battery swapping station. Figure 6 This is a schematic structural diagram of a battery swapping station 600 according to an embodiment of this application. Figure 6 As shown, the battery swapping station 600 includes a thermal management device 300 in any possible embodiment of this application.

[0144] This application also provides an energy storage power station. Figure 7 This is a schematic structural diagram of an energy storage power station 700 as described in one embodiment. Figure 7 As shown, the energy storage power station 700 includes a thermal management device 300 in any possible embodiment of this application.

[0145] Although this application has been described with reference to preferred embodiments, various modifications can be made thereto and components can be replaced with equivalents without departing from the scope of this application. In particular, the technical features mentioned in the various embodiments can be combined in any manner, provided there is no structural conflict. This application is not limited to the specific embodiments disclosed herein, but includes all technical solutions falling within the scope of the claims.

Claims

1. A thermal management device, characterized in that, The thermal management device is used to regulate the temperature of the batteries in the power station, and the thermal management device includes: Heating module, cooling module, fluid circulation loop, control module, and first detection module; The fluid circulation loop contains fluid and includes: a heat exchange section, a fluid storage section, and a refrigeration section; The control module is used to control the heating module or the cooling module to heat or cool the fluid; A first detection module is used to detect a first temperature and a second temperature. The first temperature is the temperature of the fluid at a first position in the fluid circulation loop, and the second temperature is the temperature of the fluid at a second position in the fluid circulation loop. At the first position, the fluid flows from the heat exchange section to the fluid storage section or the cooling section, and at the second position, the fluid flows from the heat exchange section or the cooling section back to the heat exchange section. The first position is located between the heat exchange section and the cooling section, and the second position is located between the heat exchange section and the fluid storage section. The heat exchange section is used to exchange heat with the battery, the fluid storage section is used to store the fluid, the heating module is used to heat the fluid in the fluid storage section, and the cooling module is used to cool the fluid in the cooling section. The control module is configured to: determine whether the current battery temperature is overheated or overcooled based on the first temperature, and control the heating module or the cooling module to heat or cool the fluid based on at least one of the ambient temperature, the distance of the second position from the battery, and the length of the fluid circulation loop between the second position and the battery, so that the second temperature rises to a second preset temperature or falls to a third preset temperature; the second preset temperature is the first preset temperature plus a first preset value; the third preset temperature is the first preset temperature minus the second preset value.

2. The thermal management device according to claim 1, characterized in that, The heating module includes: At least one heater for heating the fluid in the fluid storage section.

3. The thermal management device according to claim 2, characterized in that, The cooling module includes: An evaporator is used to absorb heat from the fluid in the refrigeration module; At least one condenser, connected to the evaporator, is used to discharge the heat absorbed by the evaporator.

4. The thermal management device according to claim 1, characterized in that, The fluid storage section includes: An opening for replenishing the fluid to the fluid storage section or discharging the fluid outside the fluid circulation loop.

5. The thermal management device according to claim 4, characterized in that, The opening of the fluid storage section includes: The fluid inlet is for replenishing the fluid to the fluid storage section, and the fluid outlet is for discharging the fluid outside the fluid circulation loop.

6. The thermal management device according to claim 5, characterized in that, The thermal management device includes: A flow regulation module is used to regulate the flow rate of the fluid in the fluid circulation loop.

7. The thermal management device according to claim 6, characterized in that, The flow regulation module includes: A switching valve is disposed at the opening and is used to regulate the flow rate of the fluid at the opening.

8. The thermal management device according to claim 6 or 7, characterized in that, The thermal management device further includes: The second detection module is used to detect the first pressure, which is the pressure of the fluid at the second position. The control module is used to control the flow regulation module to increase or decrease the first pressure.

9. The thermal management device according to claim 1, characterized in that, The thermal management device includes: A power module is disposed in the fluid circulation loop and is used to drive the fluid flow in the fluid circulation loop.

10. The thermal management device according to claim 1, characterized in that, The fluid includes at least one of water, pure water, brine solution, and liquid nitrogen.

11. The thermal management device according to claim 1, characterized in that, The power station is a battery swapping station, which includes at least one battery cabinet, in which the battery is housed. The heat exchange section is connected to or located around the battery's thermal management components.

12. The thermal management device according to claim 1, characterized in that, The power station is an energy storage power station, which includes at least one electrical cabinet, in which the battery is installed, and the heat exchange section is connected to or located around the thermal management components of the battery.

13. The thermal management device according to claim 1, characterized in that, The control module is used to control the heating module to heat the fluid to increase the second temperature when the first temperature is less than the first threshold.

14. The thermal management device according to claim 1, characterized in that, The control module is used to control the cooling module to cool the fluid so as to reduce the second temperature when the first temperature is greater than the second threshold.

15. The thermal management device according to claim 13, characterized in that, The control module is used to control the heating module to heat the fluid so that the second temperature rises to the first preset temperature, wherein the first preset temperature is greater than or equal to the first threshold and less than or equal to the second threshold.

16. The thermal management device according to claim 14, characterized in that, The control module is used to control the refrigeration module to cool the fluid so that the second temperature is reduced to the first preset temperature.

17. The thermal management device according to claim 8, characterized in that, The control module is used to control the flow regulation module to increase the flow rate until the first pressure is greater than or equal to the third threshold when the first pressure is less than the third threshold; or to control the flow regulation module to decrease the flow rate until the first pressure is less than or equal to the fourth threshold when the first pressure is greater than the fourth threshold.

18. A battery swapping station, characterized in that, The battery swapping station includes a thermal management device as described in any one of claims 1-11 and 13-17.

19. An energy storage power station, characterized in that, The energy storage power station includes a thermal management device as described in any one of claims 1-10 and 12-17.

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