WO2023230861A1

WO2023230861A1 - Thermal management device, battery swapping station, and energy storage power station

Info

Publication number: WO2023230861A1
Application number: PCT/CN2022/096298
Authority: WO
Inventors: 阙仕标
Original assignee: 宁德时代新能源科技股份有限公司
Priority date: 2022-05-31
Filing date: 2022-05-31
Publication date: 2023-12-07
Also published as: CN117500690A

Abstract

The present application discloses a thermal management device, a battery swapping station, and an energy storage power station. The thermal management device is used for regulating a temperature in the power station; the thermal management device comprises: a heating module, a refrigeration module, and a fluid circulation circuit; a fluid is provided in the fluid circulation circuit, and the fluid circulation circuit comprises a heat exchange part, a fluid storage part, and a refrigeration part, wherein the heat exchange part is used for performing heat exchange with a 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 thermal management device of the present application can perform thermal management on the battery in the power station, and helps to improve the performance and safety of the battery in the power station.

Description

A thermal management device, power exchange station and energy storage power station

Technical field

The present application relates to the field of thermal management, and more specifically, to a thermal management device, a power swap station and an energy storage power station.

Background technique

Energy conservation and emission reduction are the key to the sustainable development of the automobile industry. In this case, electric vehicles have become an important part of the sustainable development of the automotive industry due to their energy-saving and environmentally friendly advantages. As the main energy storage component in electric vehicles, batteries directly affect the performance of electric vehicles.

Temperature is one of the factors that has an important impact on the service life and cycle performance of the battery. Too low a temperature may cause the battery's charging and discharging efficiency to decrease, significantly reducing the overall performance of the electric vehicle; too high a temperature may cause the battery's charging and discharging capacity to decrease, causing serious safety issues in severe cases. Therefore, batteries in vehicles are generally equipped with thermal management components to manage and regulate the temperature of the battery. However, existing thermal management components are designed for batteries in vehicles. For some application scenarios where the batteries are not in the vehicle and the thermal management components cannot work independently (such as batteries in power stations), there is a lack of efficient thermal management capabilities. installation.

Application content

Embodiments of the present application provide a thermal management device, a battery swap station and an energy storage power station, which can perform thermal management on batteries in the power station and help improve the performance and safety of the batteries in the power station.

In a first aspect, a thermal management device is provided. The thermal management device is used to regulate the temperature of batteries in a power station. The thermal management device includes: a heating module, a refrigeration module and a fluid circulation loop; the fluid circulation loop has a fluid , the fluid circulation loop includes: a heat exchange part, a fluid storage part and a refrigeration part; wherein the heat exchange part is used to exchange heat with the battery, the fluid storage part is used to store the fluid, the The heating module is used to heat the fluid in the fluid storage part, and the refrigeration module is used to cool the fluid in the refrigeration part.

Embodiments of the present application provide a thermal management device, which has a fluid storage part and a refrigeration part, and is capable of heating or cooling the fluid in the fluid circulation loop to control the temperature of the fluid in the fluid circulation loop. The fluid circulation loop includes a heat exchange part, which can exchange heat with the battery to adjust the battery temperature. Thermal management devices can effectively regulate the battery temperature in the power station, effectively improving the situation where the battery in the power station cannot work independently due to its own thermal management components, which affects the performance of the battery or causes thermal runaway, causing serious safety issues, and helps improve different application scenarios. Lower battery performance and safety.

In some embodiments, the thermal management device includes: a control module for controlling the heating module or the refrigeration module to heat or cool the fluid.

In the embodiments of the present application, automatic control of fluid temperature can be achieved by setting up a control module, saving manpower and improving the working efficiency of the power station.

In some embodiments, the heating module includes at least one heater for heating the fluid in the fluid storage portion.

In the embodiment of the present application, the heating module directly heats the fluid in the fluid storage part of the fluid circulation loop through the heater. The heater has high heat exchange efficiency and relatively uniform heating of the fluid, which helps to improve the heating of the heating module. efficiency, thereby helping to improve the efficiency of thermal management devices.

In some embodiments, the refrigeration module includes: an evaporator for absorbing heat from the fluid in the refrigeration module; at least one condenser connected to the evaporator for discharging the The amount of heat absorbed by the evaporator.

In the embodiment of the present application, the refrigeration module directly cools the fluid in the refrigeration part of the fluid circulation loop through the cooperation of the evaporator and the condenser, which can achieve efficient heat exchange and have better refrigeration effect compared with other refrigeration forms. Helps improve the cooling efficiency of the refrigeration module, thereby helping to improve the working efficiency of the thermal management device.

In some embodiments, the fluid storage portion includes an opening for replenishing the fluid to the fluid storage portion or discharging the fluid out of the fluid circulation loop.

In the embodiments of the present application, by providing openings in the fluid storage part, excess liquid in the fluid circulation circuit can be promptly removed from the fluid circulation circuit, or fluid can be replenished in the fluid circulation circuit in time to prevent insufficient fluid in the circulation from affecting thermal management. The heat exchange performance of the device.

In some embodiments, the opening includes: a fluid inlet and at least one fluid outlet, the fluid inlet is used to replenish the fluid to the fluid storage part, and the fluid outlet is used to supply the fluid to the fluid storage part. The fluid is discharged outside the circulation loop.

In the embodiments of the present application, by arranging multiple openings in the fluid storage part, that is, the 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 exchanger device Exchange performance.

In some embodiments, the thermal management device includes: a first detection module for detecting a first temperature and a second temperature, where the first temperature is the temperature of the fluid at a first location in the fluid circulation loop. , the second temperature is the temperature of the fluid at a second position in the fluid circulation loop, where the fluid flows from the heat exchange part to the fluid storage part or the refrigeration part , in the second position, the fluid flows from the heat exchange part or the refrigeration part to the heat exchange part; the control module is used to control the heating module or the refrigeration module to process the fluid. Heating or cooling to increase or decrease the second temperature.

In the embodiment of the present application, by setting the first detection module, the thermal management device can obtain the temperature at the first position and the second position in the fluid circulation loop in time, and quickly control the heating module and the refrigeration module through the control module. This allows the heating module and cooling module to heat or cool the fluid as needed to achieve precise control of the battery temperature.

In some embodiments, the first position is between the heat exchange portion and the refrigeration portion and the second position is between the heat exchange portion and the fluid storage portion.

In some embodiments, the thermal management device includes: a flow adjustment module for adjusting the flow rate of the fluid in the fluid circulation loop.

In the embodiments of the present application, by setting up the flow adjustment module, the flow rate of the fluid in the fluid circulation loop can be controlled, and it is possible to avoid excessive flow rate of the fluid in the fluid circulation loop from damaging the fluid circulation loop, or excessive flow rate of the fluid from affecting the thermal management device. Heat exchange performance.

In some embodiments, the flow adjustment module includes: a switch valve, which is disposed at the opening and used to adjust the flow rate of the fluid at the opening.

In some embodiments, the thermal management device further includes: a second detection module configured to detect a first pressure, where the first pressure is the pressure of the fluid at the second position.

In the embodiment of the present application, by arranging the second detection module, the pressure of the fluid at the second position in the fluid circulation circuit can be detected, and the fluid in the fluid circulation circuit, especially the pressure of the fluid that is about to flow into the heat exchange part, can be monitored, so that the control module The fluid pressure in the circulation loop can be accurately adjusted based on the fluid pressure data detected by the second detection module, which helps to improve the overall performance of the thermal management device.

In some embodiments, the thermal management device includes: a power module, the power module is disposed in the fluid circulation circuit and is used to drive the fluid flow in the fluid circulation circuit.

In some embodiments, the fluid includes at least one of water, purified water, saline solution, and liquid nitrogen.

In some embodiments, the power station is a power swap station, the power swap station includes at least one power cabinet, the battery is disposed in the power cabinet, and the heat exchange part is connected or arranged with a thermal management component of the battery. around the electrical cabinet.

In some embodiments, the power station is an energy storage power station, the energy storage power station includes at least one electrical cabinet, the battery is disposed in the electrical cabinet, and the heat exchange part is connected to a thermal management component of the battery. Or be installed around the electrical cabinet.

In the embodiment of the present application, a power cabinet is provided in the power station, and the battery is placed in the 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 arranged around the power cabinet. The temperature of the battery in the electrical cabinet can be accurately controlled by directly replacing the fluid in the thermal management component of the battery or by controlling the ambient temperature around the electrical cabinet.

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.

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

In the embodiment of the present application, when the first temperature is less than the first threshold and greater than the second threshold, the control module controls the operation of the heating module and the refrigeration module respectively to adjust the temperature of the fluid, and can accurately control the temperature of the fluid to be greater than the second threshold. The second threshold value is within the range of the second threshold value and less than the first threshold value, thereby controlling the battery temperature to be stable within a certain range. This range can be a temperature range in which the battery can maintain efficient cycle performance and ensure safety. Therefore, the thermal management device can effectively control the temperature in the power station. battery thermal management.

In some embodiments, the control module is used to control the heating module to heat the fluid to increase the second temperature to a first preset temperature, and the first preset temperature is greater than or equal to the third A threshold and less than or equal to the second threshold.

In the embodiment of the present application, the control module controls the heating module to increase the temperature of the fluid to a first preset temperature, that is, controls the heating module to directly heat the fluid temperature to a preset value, and the preset value is between the second threshold and Within the temperature range formed by the first threshold, the fluid temperature can be controlled within a required temperature range, thereby achieving effective control of the battery temperature.

In some embodiments, the control module is used to control the heating module to heat the fluid to increase the second temperature to a second preset temperature; the second preset temperature is the first preset temperature. Assume that the temperature is added to a first preset value. The first preset value is based on the ambient temperature, the distance between the second position and the battery, and the length of the fluid circulation loop between the second position and the battery. at least one setting in .

In the embodiment of the present application, considering the influence of environmental temperature, the distance between the second position and the battery, the length of the fluid circulation loop and other factors on the temperature, the control module controls the heating module to increase the fluid temperature to the second preset level. The second preset temperature is higher than the first preset temperature and may not fall within the temperature range formed by the second threshold and the first threshold, but the second preset temperature can effectively compensate for the fluid passing through under the influence of the above factors. The second location is heat loss on the path into the thermal management components of the battery or to the surroundings of the battery. As a result, the thermal management device can more accurately control the temperature of the battery and improve the performance of the thermal management device.

In some embodiments, the control module is used to control the refrigeration module to refrigerate the fluid to reduce the second temperature to a first preset temperature.

In some embodiments, the control module is used to control the refrigeration module to refrigerate the fluid to reduce the second temperature to a third preset temperature; the third preset temperature is the first preset temperature. temperature minus a second preset value. The second preset value is based on the ambient temperature, the distance between the second position and the battery, and the length of the fluid circulation loop between the second position and the battery. at least one setting.

In the embodiment of the present application, similar to the heating module, the refrigeration module can directly reduce the second temperature to the first preset temperature, that is, directly reduce it to a required temperature range, or it can also reduce the second temperature to the third preset temperature. temperature, the third preset temperature is lower than the first preset temperature and may not fall within the temperature range formed by the second threshold and the first threshold, but the third preset temperature can effectively compensate for the fluid passing through under the influence of the above factors. The second location is the heat absorbed on its path into the thermal management components of the battery or around the battery. As a result, the thermal management device can more accurately control the temperature of the battery and improve the performance of the thermal management device.

In some embodiments, the control module is configured to control the flow adjustment module to increase the flow until the first pressure is greater than or equal to the third threshold when the first pressure is less than a third threshold. ; Or in the case where the first pressure is greater than the fourth threshold, control the flow adjustment module to reduce the flow until the first pressure is less than or equal to the fourth threshold.

In the embodiment of the present application, the control module can also control the flow adjustment module to adjust the pressure of the fluid in the fluid circulation circuit when the first pressure is less than the third threshold and greater than the fourth threshold, so as to efficiently and effectively control the pressure in the fluid circulation circuit. Precise control further improves the overall performance of the thermal management device.

A second aspect provides a power swap station, which includes the thermal management device as described in any embodiment of the first aspect.

In a third aspect, an energy storage power station is provided. The energy storage power station includes the thermal management device as described in any embodiment of the first aspect.

Description of the drawings

In order to explain the technical solutions of the embodiments of the present application more clearly, the drawings required to be used in the embodiments of the present application will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. Those of ordinary skill in the art can also obtain other drawings based on the drawings without exerting creative efforts.

Figure 1 is a schematic structural diagram of an electrical device of the present application;

Figure 2 is a schematic structural diagram of a battery of the present application;

Figure 3 is a schematic structural diagram of a thermal management device of the present application;

Figure 4 is a schematic structural diagram of a power station of this application;

Figure 5 is another schematic structural diagram of a thermal management device of the present application;

Figure 6 is a schematic structural diagram of a power swap station of the present application;

Figure 7 is a schematic structural diagram of an energy storage power station of the present application.

Detailed ways

The embodiments of the present 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 the present application, but cannot be used to limit the scope of the present application, that is, the present application is not limited to the described embodiments.

In the description of this application, it should be noted that, unless otherwise stated, "plurality" means more than two; the terms "upper", "lower", "left", "right", "inside", " The orientation or positional relationship indicated such as "outside" is only for the convenience of describing the present application and simplifying the description. It does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation of the present application. Application restrictions. Furthermore, the terms "first," "second," "third," etc. are used for descriptive purposes only and are not to be construed as indicating or implying relative importance. "Vertical" is not vertical in the strict sense, but within the allowable error range. "Parallel" is not parallel in the strict sense, but within the allowable error range.

The directional words appearing in the following description are the directions shown in the figures and do not limit the specific structure of the present application. In the description of this application, it should also be noted that, unless otherwise clearly stated and limited, the terms "installation", "connection" and "connection" should be understood in a broad sense. For example, it can be a fixed connection or a removable connection. Detachable connection, or integral connection; it can be directly connected or indirectly connected through an intermediate medium. For those of ordinary skill in the art, the specific meanings of the above terms in this application may be understood based on specific circumstances.

The term "and/or" in this application is just an association relationship describing associated objects, indicating that there can be three relationships, for example, A and/or B, which can mean: A exists, A and B exist simultaneously, and B exists these three situations. In addition, the character "/" in this application generally indicates that the related objects are an "or" relationship.

Unless otherwise defined, all technical and scientific terms used in this application have the same meanings as commonly understood by those skilled in the technical field of this application; the terms used in the specification of this application are only for describing specific implementations. The purpose of the examples is not intended to limit the application; the terms "including" and "having" and any variations thereof in the description and claims of the application and the above description of the drawings are intended to cover non-exclusive inclusion. The terms "first", "second", etc. in the description and claims of this application or the above-mentioned drawings are used to distinguish different objects, rather than to describe a specific order or priority relationship.

Reference in this application to "an embodiment" means that a particular feature, structure or characteristic described in connection with the embodiment may be included in at least one embodiment of the application. The appearances of this phrase in various places in the specification are not necessarily all referring to the same embodiment, nor are separate or alternative embodiments mutually exclusive of other embodiments. It will be explicitly and implicitly understood by those skilled in the art that the embodiments described herein may be combined with other embodiments.

"Multiple" appearing in this application refers to more than two (including two). Similarly, "multiple groups" refers to two or more groups (including two groups), and "multiple tablets" refers to two or more tablets. (including two pieces), multiple columns refers to more than two columns (including two columns).

In the automotive industry environment that uses traditional energy as power supply, environmental pollution problems are becoming more and more serious. Actively developing new energy vehicles can reduce the harm to the environment. For new energy vehicles, battery technology is an important factor related to their development.

Our country has a very wide geographical area, and the climate and temperature vary greatly from place to place. Temperature is one of the important factors affecting battery cycle performance and safety performance. In actual production and life, too low a battery's temperature can easily lead to lower cycle performance and capacity retention; too high a battery's temperature can easily lead to unnecessary side reactions inside the battery, resulting in a reduction in battery capacity, and in severe cases, it can cause battery failure. security issues. Therefore, the thermal management of batteries is an important part of battery technology.

Currently, thermal management of batteries is usually achieved by equipping batteries with thermal management components. For example, fans and air ducts are set up around the battery, or water-cooling plates are set up, and the thermal management of the battery is achieved by connecting to the vehicle's mechanical parts or water supply parts. However, in some situations where the battery is not placed in the vehicle (for example, the battery in the power station), the thermal management components of the battery itself cannot work, and the battery cannot be effectively thermally managed.

In view of this, this application provides a thermal management device that can effectively manage the heat of batteries in power stations, help improve the performance and safety of batteries in power stations, and further expand the application range of batteries.

As shown in Figure 1, it is a schematic structural diagram of a vehicle 1 of the present application. The vehicle 1 can be a fuel vehicle, a gas vehicle or a new energy vehicle. The new energy vehicle can be a pure electric vehicle, a hybrid vehicle or a range-extended vehicle. A motor 11 , a controller 12 and a battery 10 may be installed inside the vehicle 1 . The controller 12 is used to control the battery 10 to provide power to the motor 11 . For example, the battery 10 may be disposed at the bottom, front or rear of the vehicle 1 . The battery 10 can be used to supply power to the vehicle 1 . For example, the battery 10 can be used as an operating power source of the vehicle 1 and used in the circuit system of the vehicle 1 , for example, to meet the power requirements for starting, navigation, and operation of the vehicle 1 . In another embodiment of the present application, the battery 10 can not only be used as an operating power source of the vehicle 1 , but also can be used as a driving power source of the vehicle 1 , replacing or partially replacing fuel or natural gas to provide driving power for the vehicle 1 .

It should be understood that this application takes a vehicle as an example as an electrical device, but the electrical device can also be a mobile phone, a portable device, a laptop, a ship, a spacecraft, an electric toy, an electric tool, etc. Vehicles can be fuel vehicles, gas vehicles or new energy vehicles, and new energy vehicles can be pure electric vehicles, hybrid vehicles or extended-range vehicles, etc.; spacecraft include aircraft, rockets, space shuttles, spaceships, etc.; electric toys include fixed Type or mobile electric toys, such as game consoles, electric car toys, electric ship toys and electric airplane toys, etc.; electric tools include metal cutting electric tools, grinding electric tools, assembly electric tools and railway electric tools, for example, Electric drills, electric grinders, electric wrenches, electric screwdrivers, electric hammers, impact drills, concrete vibrators, planers and more. The embodiments of this application impose no special restrictions on the above electrical equipment.

In this application, a battery refers to a physical module that includes 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. Batteries generally include a box for packaging one or more battery cells. The box can prevent liquid or other foreign matter from affecting the charging or discharging of the battery cells.

In order to meet different power requirements, the battery may include multiple battery cells, wherein the multiple battery cells may be connected in series, in parallel, or in mixed connection. Hybrid connection refers to a mixture of series and parallel connection. Batteries may also be called battery packs. Optionally, multiple battery cells can be first connected in series, parallel, or mixed to form a battery module, and then multiple battery modules can be connected in series, parallel, or mixed to form a battery. In other words, multiple battery cells can directly form a battery, or they can first form a battery module, and then the battery module can form a battery.

For example, as shown in FIG. 2 , it is a schematic structural diagram of a battery 10 of the present application. The battery 10 may include a plurality of 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 connection to achieve larger capacity or power.

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., which are not limited in the embodiments of the present application. In some embodiments, the battery cell 20 may also be called a cell.

The battery cell 20 includes an electrode assembly and an electrolyte. The electrode assembly is composed of a positive electrode sheet, a negative electrode sheet and a separator. Battery cells mainly rely on the movement of metal ions between the positive and negative electrodes to work. The positive electrode sheet includes a positive electrode current collector and a positive electrode active material layer. The positive electrode active material layer is coated on the surface of the positive electrode current collector. The current collector that is not coated with the positive electrode active material layer protrudes from the current collector that is coated with the positive electrode active material layer. The current collector coated with the positive electrode active material layer serves as the positive electrode tab. Taking lithium-ion batteries as an example, the material of the positive electrode current collector can be aluminum, and the positive electrode active material can be lithium cobalt oxide, lithium iron phosphate, ternary lithium or lithium manganate, etc. The negative electrode sheet includes a negative electrode current collector and a negative electrode active material layer. The negative electrode active material layer is coated on the surface of the negative electrode current collector. The current collector that is not coated with the negative electrode active material layer protrudes from the current collector that is coated with the negative electrode active material layer. The current collector coated with the negative active material layer serves as the negative electrode tab. The material of the negative electrode current collector can be copper, and the negative electrode active material can be carbon or silicon. In order to ensure that large currents can pass through without melting, the number of positive electrode tabs is multiple and stacked together, and the number of negative electrode tabs is multiple and stacked together. The material of the separator can be polypropylene (PP) or polyethylene (Polyethylene, PE). In addition, the electrode assembly may have a rolled structure or a laminated structure, and the embodiments of the present application are not limited thereto.

Optionally, the battery 10 further includes a box, a battery management system and related installation structural components. Among them, the battery management system includes thermal management components.

Next, the thermal management device 300 according to the embodiment of the present application will be introduced.

Figure 3 is a schematic structural diagram of a thermal management device 300 according to an embodiment of the present application. The thermal management device 300 is used to adjust the temperature of batteries in a power station.

As shown in FIG. 3 , the thermal management device 300 includes a heating module 301 , a cooling module 302 and a fluid circulation circuit 303 . There is fluid in the fluid circulation circuit 303 , and the fluid circulation circuit 303 includes a heat exchange part 3031 , a fluid storage part 3032 and a refrigeration part 3033 . The heat exchange part 3031 is used for heat exchange with the battery 10, and the fluid storage part 3032 is used for storing fluid. The heating module 301 is used to heat the fluid in the fluid storage part 3032, and the cooling module 303 is used to cool the fluid in the refrigeration part 3033.

Specifically, the thermal management device 300 is applied in scenarios where the thermal management component of the battery 10 itself cannot work properly, especially in usage scenarios such as power stations. 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 circuit 303 flows from the fluid storage part 3032 or the refrigeration part 3033 to the heat exchange part 3031 and then flows back to the fluid storage part 3032 or the refrigeration part 3033. In the heat exchange part 3031, the fluid exchanges heat with the battery 10, thereby, The thermal management device 300 can achieve effective temperature control of the battery 10 by heating or cooling the fluid.

It should be understood that the fluid circulation loop 303 can be a circulation loop composed of a heat exchange part 3031, a heating part 3032 and a refrigeration part 3033 connected in series; it may also be shown in Figure 3 that the heat exchange part 3031 is connected with the heating part 3032 and the refrigeration part 3033 respectively. Section 3033 forms a circular loop. Figure 3 only shows one possible situation, and the embodiment of the present application does not limit this.

In this embodiment, on the one hand, the thermal management device 300 can control the temperature of the battery 10 in the power station, which solves the problem that the battery 10 in the power station cannot perform effective thermal management because its own thermal management components cannot work independently. The performance and safety of the battery 10 in the power station are improved, and the risk of performance degradation or safety hazards of the battery 10 due to excessively high or low temperature of the battery 10 in the power station is reduced, thus 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 the fluid. Compared with other thermal management methods such as air cooling, the heat conversion efficiency of controlling the fluid temperature is high and the temperature control accuracy is high, and the temperature of the battery 10 can be reduced. The temperature is controlled within an appropriate range to improve the thermal management efficiency and thermal management effect of the thermal management device 300 .

FIG. 4 is a schematic structural diagram of a power station 400 according to this embodiment.

Optionally, the power station 400 is a power swap station. The power swap station includes at least one power cabinet 401. The battery 10 is placed in the power cabinet 401. The heat exchange part 3031 is connected to the thermal management component of the battery 10 or is arranged around the power cabinet 401.

Specifically, in the case where the battery 10 includes a thermal management component, the heat exchange part 3031 of the fluid circulation loop 303 in the thermal management device 300 may be directly connected to the thermal management component of the battery 10, for example, connected to a water cooling plate of the battery 10. For another example, when the cooling liquid is filled between the battery cells 20 , the cooling liquid inlet and the cooling liquid outlet of the battery 10 are connected. The thermal management components of the battery 10 described in the embodiments of this application refer to thermal management components 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 through the fluid circulation loop 303, so as to effectively control the temperature of the fluid in the fluid circulation loop 303 for the battery 10 in the power station 400. Thermal management.

When the battery 10 is not provided with corresponding thermal management components, the heat exchange part 3031 of the fluid circulation circuit 303 in the thermal management device 300 is disposed around the electrical cabinet 401 , and the battery 10 is disposed in the electrical cabinet 401 . The heat exchange part 3031 arranged around the fluid circulation loop 303 can effectively control the ambient temperature around the battery 10, thereby achieving effective thermal management of the battery 10 in the power station 400 through the influence of the ambient temperature on the temperature of the battery 10.

In this embodiment, by directly connecting the heat exchange part 3031 of the fluid circulation loop 303 with the thermal management component of the battery 10, or by arranging the heat exchange part 3031 around the power cabinet 400 of the power swap station, the fluid in the fluid circulation loop 303 can be passed through. The temperature of the battery 10 is controlled within a relatively precise range, thereby achieving precise control of the temperature of the battery 10 in the power station 400.

Optionally, the power station 400 is an energy storage power station. The energy storage power station includes at least one electrical cabinet 401. The battery 10 is arranged in the electrical cabinet 401. The heat exchange part 3031 is connected to the thermal management component of the battery 10 or is arranged around the electrical cabinet 401. .

Optionally, in some other embodiments, the power station 400 is a substation. The power swap station includes at least one electrical cabinet 401. The battery 10 is disposed in the electrical cabinet 401. The heat exchange part 3031 is connected to or disposed in the thermal management component of the battery 10. Around the electrical cabinet 401.

Optionally, please continue to refer to FIG. 3 . The thermal management device 300 includes a control module 304 . The control module 304 is used to control the heating module 301 to heat the fluid or the refrigeration module 302 to cool the fluid.

Specifically, the control module 304 may be a single-chip microcomputer, or may be the main control of the power station 400, or a single-chip microcomputer connected to the main control of the power station 400, or the like. For example, the control module 304 includes a memory, a processor, a communication interface, and the like.

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

The processor can be a general central processing unit (CPU), a microprocessor, an application specific integrated circuit (ASIC), a graphics processing unit (GPU), or one or more integrated circuits. The circuit is used to execute relevant programs to realize the functions required to be performed by the units and modules in the thermal management device according to the embodiment of the present application.

The processor can also be an integrated circuit chip with signal processing capabilities. During the implementation process, the functions required to be performed by the units and modules in the thermal management device of the embodiment of the present application can be completed by instructions in the form of hardware integrated logic circuits or software in the processor.

The above-mentioned processor can also be a general-purpose processor, a digital signal processor (DSP), an ASIC, an off-the-shelf programmable gate array (FPGA) or other programmable logic devices, discrete gates or transistor logic devices , discrete hardware components. Each method, step and logical block diagram disclosed in the embodiment of this application can be implemented or executed. A general-purpose processor may be a microprocessor or the processor may be any conventional processor, etc. The steps of the methods disclosed in conjunction with the embodiments of the present application can be directly implemented by a hardware processor, or executed by a combination of hardware and software modules in the processor. The software module can be located in random access memory, flash memory, read-only memory, programmable read-only memory or electrically erasable programmable memory, registers and other mature storage media in this field. The storage medium is located in the memory, and the processor reads the information in the memory, and combines its hardware to complete the functions required to be performed by the units and modules included in the device of the embodiment of the present application.

It should be noted that although the above control module 304 only mentions memory, processor, and communication interface, during the specific implementation process, according to specific needs, those skilled in the art will understand that the control module 304 may also include hardware that implements other additional functions. device. In addition, those skilled in the art should understand that the control module 304 may only include components necessary to implement the embodiments of the present application.

In this embodiment, by arranging the control module 304 in the thermal management device 300, automatic control of the fluid temperature can be realized, thereby automatically controlling the temperature of the battery 10, effectively improving the working efficiency of the thermal management device 300 and the power station 400.

FIG. 5 is another schematic structural diagram of a thermal management device 300 according to an embodiment of the present application.

As shown in FIG. 5 , optionally, the heating module 301 includes at least one heater 3011 for heating the fluid in the fluid storage portion 3032 .

Specifically, the fluid storage portion 3032 may be a water storage tank, a water reservoir, or the like. The heater 3011 can be directly disposed in the fluid storage part 3032 and in direct contact with the fluid in the fluid storage part 3032. When the heater 3011 works, it directly heats the fluid in the fluid storage part 3032; the heater 3011 can also be disposed around the fluid storage part 3032. , in contact with the fluid storage part 3032, the heater 3011 heats the fluid in the fluid storage part 3032 by heating the outer wall of the fluid storage part 3032 when operating.

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

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

In this embodiment, the heating module 301 uses an electric heater to heat the fluid in the fluid storage part of the fluid circulation loop. The electric heater has high heat exchange efficiency and relatively uniform heating of the fluid, which helps to improve the efficiency of the heating module 301. Heating efficiency helps the heating performance and working efficiency of the thermal management device 300 .

Preferably, the electric heater is in the form of a heating tube. The volume and shape of the heating tube are smaller, which facilitates the overall layout of the thermal management device 300 and helps save the space of the thermal management device 300 .

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

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

Please continue to refer to Figure 5. Optionally, the refrigeration module 302 includes an evaporator 3021 and at least one condenser 3022. The evaporator 3021 is connected to the condenser 3022, where the evaporator 3021 is used to absorb the heat of the fluid in the refrigeration module 302 and condense it. The evaporator 3022 is used to discharge the heat absorbed by the evaporator 3021.

Specifically, the refrigeration module 302 contains a refrigerant. The refrigerant may be at least one of fluorine, chlorine, bromine derivatives of saturated hydrocarbons, hydrocarbons, ammonia, hydrogen, helium and other substances. The embodiments of the present application are suitable for The type of refrigerant is not limited. The refrigeration part of the fluid circulation loop 303 in the thermal management device 300 is arranged in the evaporator 3021 of the refrigeration module 302. When the refrigeration module 302 is working, the refrigerant in the evaporator 3021 absorbs the heat of the refrigeration part 3033 of the fluid circulation loop 303 and vaporizes. Thus, the fluid in the refrigeration portion 3033 is refrigerated. The refrigerant in the evaporator 3021 absorbs heat and vaporizes, then enters the condenser 3022. It is condensed and liquefied in the condenser 3022, changes from gaseous state to liquid state, and releases heat, that is, the heat absorbed by the evaporator 3021 is discharged.

In this embodiment, the refrigeration module 302 has an evaporator 3021 and a condenser 3022, which cooperate to cool down 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 helps improve the refrigeration performance and working efficiency of the thermal management device 300.

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

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

Continuing to refer to FIG. 5 , optionally, the fluid storage portion 3032 includes an opening 3032 a for replenishing fluid into the fluid storage portion 3032 or discharging fluid to the outside of the fluid circulation circuit 303 .

Specifically, the fluid storage part 3032 may be provided with one or more openings 3032a. In the case where one opening 3032a is provided, the opening 3032a may be both a fluid inlet and a fluid outlet. According to the use needs of the thermal management device 300, the fluid is replenished into the fluid storage part 3032 through the opening 3032a or the fluid is discharged from the fluid storage part 3032, so that the fluid circulation circuit 303 of the thermal management device 300 can operate stably.

In this embodiment, by providing the opening 3032a in the fluid storage part 3032, the amount of fluid in the fluid storage part 3032 can be flexibly controlled, thereby achieving flexible control of the total amount of fluid in the fluid circulation circuit 303, and effectively avoiding the thermal management device 300 due to fluid circulation. Insufficient fluid in the circuit 303 prevents efficient control of the temperature of the battery 10 , or avoids excessive fluid and excessive pressure in the fluid circulation circuit 303 causing damage to the fluid circulation circuit 303 , thereby helping to increase the service life of the thermal management device 300 .

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 part 3032 , and the fluid outlet is used to discharge fluid to the outside of the fluid circulation circuit 303 .

Specifically, the fluid storage part 3032 may be provided with a plurality of openings 3032a, which are the fluid inlet and at least one fluid outlet. The fluid inlet is provided on the fluid storage part 3032 at a higher position than the fluid outlet. For example, when the fluid storage part 303 is a cubic box, the fluid inlet may be provided on the top wall of the box, and the fluid outlet may be provided on the side wall of the box. The fluid inlet provided on the top wall of the box helps the fluid flow into the fluid storage part 3032 under the action of gravity, and the fluid discharge port provided on the side wall of the box helps the fluid flow out of the fluid storage part 3032 under the action of gravity. Thereby, fluid can be replenished into the fluid storage portion 3032 or discharged out of the fluid storage portion without the help of external force.

In this embodiment, on the one hand, providing multiple openings 3032a in the fluid storage part 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 realize the flow of the fluid in the fluid storage part 3032. Replenishment and discharge, saving power consumption caused by fluid replenishment and discharge, helping to improve the working efficiency of the thermal management device.

Please continue to refer to FIG. 5. As shown in FIG. 5, the thermal management device 300 includes a first detection module 305 for detecting the first temperature T1 and the second temperature T2. Wherein, the first temperature T1 is the temperature of the fluid at the first position P1 in the fluid circulation circuit 303; the second temperature T2 is the temperature of the fluid at the second position P2 in the fluid circulation circuit 303. At the first position P1, the fluid flows from the heat exchange part 3031 to the fluid storage part 3032 or to the refrigeration part 3033; at the second position P2, the fluid flows from the fluid storage part 3032 or the refrigeration part 3033 to the heat exchange part 3031.

Optionally, the control module 304 is used to control the heating module 301 or the cooling module 302 to heat or cool the fluid to increase or decrease the second temperature T2.

Specifically, at the first position P1, the fluid flows from the heat exchange part 3031 to the fluid storage part 3032 or to the refrigeration part 3033. In other words, the first position P1 is the water outlet of the heat exchange part 3031, the fluid storage part 3032 or the refrigeration part. 3033 water inlet. At the second position P2, the fluid flows from the fluid storage part 3032 or the refrigeration part 3033 to the heat exchange part 3031. In other words, the second position P2 is the water inlet of the heat exchange part 3031 and the water outlet of the fluid storage part 3032 or the refrigeration part 3033. . The temperature at the first position P1 is the temperature of the fluid after heat exchange, which can reflect 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 part 3031 for heat exchange with the battery 10, and can Reflects the temperature that the battery 10 is expected to reach. The first detection module 305 includes at least two detection units 3051, which respectively detect the temperature of the fluid at different locations.

In this embodiment, by setting the first detection module 305, the thermal management device 300 can promptly 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, Therefore, it is possible to determine whether the current temperature of the battery 10 is overheated or undercooled based on the first temperature T1, and by heating or cooling the fluid, the second temperature T2 flows into the fluid circulation loop 3031 again 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 .

Optionally, the first position P1 is located between the heat exchange part 3031 and the refrigeration part 3033, and the second position P2 is located between the heat exchange part 3031 and the fluid storage part 3032.

Optionally, the thermal management device 300 includes a flow adjustment module 306 for adjusting the flow of fluid in the fluid circulation loop 303 .

Optionally, the flow adjustment module 306 includes a switch valve 3061, which is disposed at the opening 3032a for regulating the flow of fluid at the opening 3032a.

Optionally, the switch valve 3061 is disposed at the second position P2 for adjusting the flow of fluid at the water inlet of the heat exchange part 3031.

In this embodiment, the flow rate of the fluid in the fluid circulation circuit 303 can be flexibly controlled by setting the flow adjustment module 306 to avoid excessive flow of fluid in the fluid circulation circuit 303 from damaging the fluid circulation circuit 303, or excessive flow of fluid from affecting the heat exchange part. The heat exchange between 3031 and the battery 10 helps improve the heat exchange performance of the thermal management device 300 and extend the service life of the thermal management device 300 .

Optionally, referring to FIG. 5 , the thermal management device further includes a second detection module 307 for detecting the first pressure p, which is the pressure p of the fluid at the second position P2.

Specifically, the first pressure p of the fluid at the second position P2 can reflect the current pressure situation of the fluid in the heat exchange part 3031. Obtaining the first pressure p helps the thermal management device 300 promptly adjust the flow rate of the fluid in the fluid circulation loop 303 according to the pressure of the heat exchange part 3031 to ensure 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 that respectively detect the pressure of the fluid at different locations in the fluid circulation circuit 303, so that the thermal management device 300 can adjust the flow rate of the fluid in the fluid circulation circuit 303 according to the pressure of the fluid at different locations.

In this embodiment, by setting the second detection module 307, the thermal management device 300 can accurately regulate the pressure in the fluid circulation circuit according to the pressure data of the fluid, helping to improve the overall performance of the thermal management device 300.

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

Specifically, a power module may include one or more power units. Taking the power unit as a liquid pump as an example, the liquid pump can be disposed at different positions of the fluid circulation circuit 303 to drive the fluid to flow in the fluid circulation circuit 303 . When the power module only includes one power unit, the power unit may be disposed at the second position P2 to drive the fluid into the heat exchange part 3031 in time.

Optionally, the fluid includes at least one of water, purified water, saline solution, and liquid nitrogen.

Next, how the control module 304 controls the temperature of the fluid is further introduced.

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

Optionally, the control module 304 is configured to control the refrigeration module 302 to refrigerate the fluid to reduce the second temperature T2 when the first temperature T1 is greater than the second threshold.

Specifically, the second threshold is greater than the first threshold, and the temperature range from the first threshold to the second threshold is a suitable temperature range for the battery. When the first temperature T1 is less than the first threshold, it means that the temperature of the battery 10 is too low and needs to be heated up; when the first temperature T1 is greater than the second threshold, it means that the temperature of the battery 10 is too high and needs to be cooled down. The control module controls the heating module 301 and the refrigeration module 302 according to the first temperature T1, and when the first temperature T1 does not fall within the range of the first threshold to the second threshold, the fluid in the fluid circulation loop is heated or cooled in time, so as to The battery 10 is heated or cooled.

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.

In this embodiment, the control module 304 adjusts and accurately 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 enables the battery 10 to maintain efficient cycle performance and ensure safety. Therefore, the thermal management device 300 can effectively perform thermal management on the battery in the power station.

Optionally, the control module 304 is used to control the heating module 301 to heat the fluid to increase the second temperature T2 to a first preset temperature, which is greater than or equal to the first threshold and less than or equal to the second threshold.

Optionally, the control module 304 is used to control the heating module 301 to heat the fluid to increase the second temperature T2 to a second preset temperature. The second preset temperature is the first preset temperature plus the first preset value. The 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 .

Specifically, when controlling the heating module 301 to heat the fluid, the control module 304 can directly cause the heating module 301 to heat the second temperature T2 of the fluid to the first preset temperature, that is, within the temperature range from the first threshold to the second threshold. Considering that environmental temperature, the distance between the second position P2 and the battery 10 , the length of the fluid circulation loop 303 between the second position P2 and the battery 10 and other factors have an impact on the fluid temperature in the fluid circulation loop 303 , for example, the ambient temperature is higher than Too low, the distance between the second position P2 and the battery 10 is far, or the length of the fluid circulation loop 303 between the second position P2 and the battery 10 is too long, etc., all of which will cause the fluid to flow through the second position P2. The heat loss experienced during the heat exchange part 3031 causes the temperature of the fluid heated to the battery 10 in the heat exchange part 3031 to be lower than the second temperature T2. Based on this, when controlling the heating module 301 to heat the fluid, the control module 304 can cause the heating module 301 to heat the second temperature T2 of the fluid to a second preset temperature, and the second preset temperature is higher than the first preset temperature, whereby The heat loss of the fluid caused by the above factors can be compensated, so that the temperature of the fluid that undergoes heat exchange with the battery 10 is within the temperature range from the first threshold to the second threshold.

Optionally, the control module 304 is used to control the refrigeration module 302 to refrigerate the fluid to reduce the second temperature T2 to the first preset temperature.

Optionally, the control module 304 is used to control the refrigerating fluid of the refrigeration module 302 to reduce the second temperature T2 to a third preset temperature. The third preset temperature is the first preset temperature minus the second preset value. The setting value is set according to at least one of the 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 .

Specifically, similar to the way of controlling the heating module 301, when the control module 304 controls the refrigeration module 302 to refrigerate the fluid, it can directly cause the refrigeration module 302 to reduce the second temperature T2 of the fluid to the first preset temperature; it can also cause the refrigeration module 302 to reduce the second temperature T2 of the fluid to the first preset temperature; 302 reduces the second temperature T2 of the fluid to a third preset temperature, which is smaller than the first preset temperature, thereby compensating for the distance between the second position P2 and the battery 10 due to excessive ambient temperature. If the fluid circulation loop 303 between the second position P2 and the battery 10 is too far away or the length of the fluid circulation loop 303 between the second position P2 and the battery 10 is too long, the fluid will absorb heat while flowing to the heat exchange part 3031 through the second position P2 and the temperature will rise. The temperature of the fluid that undergoes heat exchange with the battery 10 is within a temperature range from the first threshold to the second threshold.

Optionally, the control module 304 is used to control the flow adjustment 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 when the first pressure is greater than the fourth threshold In this case, the flow adjustment module 306 is controlled to reduce the flow rate until the first pressure p is less than or equal to the fourth threshold.

Specifically, the range from the third threshold to the fourth threshold is a 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 small and the fluid flow is insufficient, which may be It will result in lower heat exchange efficiency, so the flow rate needs to be increased to increase the pressure; the first pressure p is greater than the fourth threshold, indicating that the fluid pressure is relatively large, which may affect the heat exchange efficiency or cause damage to the fluid circulation loop 303, so The flow rate needs to be reduced to reduce the pressure.

In this embodiment, the control module 304 regulates the pressure of the fluid flowing into the heat exchange part 3031 according to the first pressure p at the second position P2, and can accurately regulate the pressure in the fluid circulation circuit 303 in a timely manner, further improving the The overall performance of the thermal management device 300.

The embodiment of the present application also uses a power swap station. FIG. 6 is a schematic structural diagram of a power swap station 600 according to the embodiment of the present application. As shown in FIG. 6 , the power swap station 600 includes the thermal management device 300 in any possible embodiment of the present application.

An embodiment of the present application also provides an energy storage power station. Figure 7 is a schematic structural diagram of an energy storage power station 700 according to this embodiment. As shown in FIG. 7 , the energy storage power station 700 includes the thermal management device 300 in any possible embodiment of the present application.

While the present application has been described with reference to preferred embodiments, various modifications may be made and equivalents may be substituted for components thereof without departing from the scope of the application. In particular, as long as there is no structural conflict, the technical features mentioned in the various embodiments can be combined in any way. The application is not limited to the specific embodiments disclosed herein, but includes all technical solutions falling within the scope of the claims.

Claims

A thermal management device, characterized in that the thermal management device is used to regulate the temperature of batteries in a power station, and the thermal management device includes:

Heating modules, cooling modules and fluid circulation circuits;

There is fluid in the fluid circulation loop, and the fluid circulation loop includes: a heat exchange part, a fluid storage part and a refrigeration part;

Wherein, the heat exchange part is used for heat exchange with the battery, the fluid storage part is used for storing the fluid, and the heating module is used for heating the fluid in the fluid storage part, so The refrigeration module is used to refrigerate the fluid in the refrigeration part.
The thermal management device according to claim 1, characterized in that the thermal management device includes:

A control module is used to control the heating module or the refrigeration module to heat or cool the fluid.
The thermal management device according to claim 1 or 2, characterized in that the heating module includes:

At least one heater for heating the fluid in the fluid storage portion.
The thermal management device according to claim 3, wherein the refrigeration module includes:

an evaporator, used to absorb the heat of the fluid in the refrigeration module;

At least one condenser, the condenser is connected to the evaporator and used to discharge the heat absorbed by the evaporator.
The thermal management device according to any one of claims 1-4, characterized in that the fluid storage part includes:

An opening is used to replenish the fluid to the fluid storage part or discharge the fluid to the outside of the fluid circulation circuit.
The thermal management device of claim 5, wherein the fluid storage portion opening includes:

a fluid inlet and at least one fluid outlet, the fluid inlet is used to replenish the fluid to the fluid storage part, and the fluid outlet is used to discharge the fluid outside the fluid circulation loop.
The thermal management device according to any one of claims 1-6, characterized in that the thermal management device includes:

The 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 in the fluid circulation loop. The temperature of the fluid at a second position where the fluid flows from the heat exchange part to the fluid storage part or the refrigeration part and where the fluid flows from the The heat exchange part or the refrigeration part flows to the heat exchange part;

The control module is used to control the heating module or the refrigeration module to heat or cool the fluid to increase or decrease the second temperature.
The thermal management device according to claim 7, wherein the first position is between the heat exchange part and the refrigeration part, and the second position is between the heat exchange part and the fluid storage part. between parts.
The thermal management device according to any one of claims 1-8, characterized in that the thermal management device includes:

A flow adjustment module is used to adjust the flow rate of the fluid in the fluid circulation loop.
The thermal management device according to claim 9, characterized in that the flow adjustment module includes:

A switching valve is provided at the opening and used to adjust the flow rate of the fluid at the opening.
The thermal management device according to claim 9 or 10, characterized in that the thermal management device further includes:

a second detection module, configured to detect a first pressure, where the first pressure is the pressure of the fluid at the second position;

The control module is used to control the flow adjustment module to increase or decrease the first pressure.
The thermal management device according to any one of claims 1-11, characterized in that the thermal management device includes:

A power module is provided in the fluid circulation circuit and is used to drive the fluid flow in the fluid circulation circuit.
The thermal management device according to any one of claims 1 to 12, wherein the fluid includes at least one of water, purified water, saline solution, and liquid nitrogen.
The thermal management device according to claim 1, wherein the power station is a power swap station, the power swap station includes at least one power cabinet, the battery is arranged in the power cabinet, and the heat exchange part is connected to the power cabinet. The thermal management component of the battery is connected or arranged around the electrical cabinet.
The thermal management device according to claim 1, wherein the power station is an energy storage power station, the energy storage power station includes at least one electrical cabinet, the battery is arranged in the electrical cabinet, and the heat exchange part It is connected to the thermal management component of the battery or is arranged around the electrical cabinet.
The thermal management device according to any one of claims 1-15, wherein the control module is used to control the heating module to heat the fluid when the first temperature is less than a first threshold. to increase the second temperature.
The thermal management device according to any one of claims 1-15, wherein the control module is configured to control the refrigeration module to cool the fluid when the first temperature is greater than a second threshold. to lower the second temperature.
The thermal management device according to claim 16, wherein the control module is used to control the heating module to heat the fluid to increase the second temperature to a first preset temperature, and the first The preset temperature is greater than or equal to the first threshold and less than or equal to the second threshold.
The thermal management device according to claim 16, wherein the control module is used to control the heating module to heat the fluid to increase the second temperature to a second preset temperature;

The second preset temperature is the first preset temperature plus a first preset value. The first preset value is based on the ambient temperature, the distance between the second position and the battery, and the second position. At least one of the lengths of the fluid circulation loop between the battery and the battery is provided.
The thermal management device according to claim 17, wherein the control module is used to control the refrigeration module to cool the fluid to reduce the second temperature to a first preset temperature.
The thermal management device according to claim 17, wherein the control module is used to control the refrigeration module to refrigerate the fluid to reduce the second temperature to a third preset temperature;

The third preset temperature is the first preset temperature minus a second preset value. The second preset value is based on the ambient temperature, the distance between the first position and the battery, and the first position. At least one of the lengths of the fluid circulation loop between the battery and the battery is provided.
The thermal management device according to any one of claims 1-21, wherein the control module is configured to control the flow adjustment module to increase the pressure when the first pressure is less than a third threshold. flow until the first pressure is greater than or equal to the third threshold; or in the case where the first pressure is greater than the fourth threshold, control the flow adjustment module to reduce the flow until the first pressure is less than or equal to The fourth threshold.
A power swap station, characterized in that the power swap station includes the thermal management device according to any one of claims 1-22.
An energy storage power station, characterized in that the energy storage power station includes the thermal management device according to any one of claims 1-22.