CN117500690A

CN117500690A - Thermal management device, power exchange station and energy storage power station

Info

Publication number: CN117500690A
Application number: CN202280038314.3A
Authority: CN
Inventors: 阙仕标
Original assignee: Contemporary Amperex Technology Co Ltd
Current assignee: Contemporary Amperex Technology Co Ltd
Priority date: 2022-05-31
Filing date: 2022-05-31
Publication date: 2024-02-02
Also published as: WO2023230861A1

Abstract

The application discloses a thermal management device, a power exchange station and an energy storage power station. The thermal management device is used for adjusting the temperature of the battery in the power station, and the thermal management device includes: a heating module, a refrigeration module, and a fluid circulation loop; the fluid circulation loop has fluid therein, and the fluid circulation loop includes: a heat exchange portion, a fluid storage portion, and a refrigeration portion; the heat exchange part is used for exchanging heat with the battery, the fluid storage part is used for storing fluid, the heating module is used for heating the fluid in the fluid storage part, and the refrigerating module is used for refrigerating the fluid in the refrigerating part. The thermal management device can be used for carrying out 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

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 particularly, to a thermal management device, a power exchange station, and an energy storage power station.

Background

Energy conservation and emission reduction are key to sustainable development of the automobile industry. In this case, the electric vehicle is an important component for sustainable development of the automobile industry due to the energy-saving and environment-friendly advantages. Batteries are used as the primary energy storage element in electric vehicles, directly affecting the performance of the electric vehicle.

Temperature is one of the factors that has an important influence on the service life and cycle performance of the battery. The excessively low temperature may cause the reduction of the charge and discharge efficiency of the battery, so that the overall performance of the electric vehicle is greatly reduced; too high a temperature may cause a decrease in the charge and discharge capacity of the battery, and serious safety problems are caused in serious cases. Therefore, a battery in a vehicle is generally equipped with a thermal management member to manage and regulate the temperature of the battery. However, existing thermal management components are designed for batteries in vehicles, and for applications where some batteries are not in a vehicle and their thermal management components cannot operate independently (e.g., batteries in a power station), there is no device capable of efficiently thermally managing them.

Content of the application

The embodiment of the application provides a thermal management device, a power exchange station and an energy storage power station, which can be used for carrying out thermal management on batteries in the power station and helping to improve the performance and the safety of the batteries in the power station.

In a first aspect, there is provided a thermal management device for regulating the temperature of a battery in a power station, the thermal management device comprising: a heating module, a refrigeration module, and a fluid circulation loop; the fluid circulation loop has fluid therein, and the fluid circulation loop includes: a heat exchange portion, a fluid storage portion, and a refrigeration portion; wherein the heat exchange part is used for carrying out 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 refrigerating module is used for refrigerating the fluid in the refrigerating part.

Embodiments of the present application provide a thermal management device having a fluid storage portion and a refrigeration portion, capable of heating or cooling a fluid in a fluid circulation loop, and realizing control of a fluid temperature in the fluid circulation loop. The fluid circulation loop comprises a heat exchange part which can exchange heat with the battery, thereby realizing the adjustment of the temperature of the battery. The thermal management device can effectively regulate and control the temperature of the battery in the power station, effectively improve the condition that the performance of the battery is influenced or serious safety problem is caused by thermal runaway because the thermal management component of the battery in the power station cannot work independently, and help to improve the performance and safety of the battery in different application scenes.

In some embodiments, the thermal management device comprises: and the control module is used for controlling the heating module or the refrigerating module to heat or refrigerate the fluid.

In the embodiment of the application, through setting up control module can realize the automatic control to fluid temperature, uses manpower sparingly, improves the work efficiency of power station.

In some embodiments, the heating module comprises: at least one heater for heating the fluid in the fluid storage section.

In the embodiment of the application, the heating module directly heats the fluid in the fluid storage part of the fluid circulation loop through the heater, and the heater has high heat exchange efficiency and relatively uniform heating of the fluid, so that the heating efficiency of the heating module is improved, and the working efficiency of the thermal management device is improved.

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

In the embodiment of the application, the refrigeration module is matched with the condenser through the evaporator to directly cool the fluid in the refrigeration part of the fluid circulation loop, so that efficient heat exchange can be realized, the refrigeration effect is better compared with other refrigeration modes, the refrigeration efficiency of the refrigeration module is improved, and the work efficiency of the thermal management device is improved.

In some embodiments, the fluid storage portion comprises: an opening for replenishing the fluid to the fluid storage portion or discharging the fluid to the outside of the fluid circulation circuit.

In the embodiment of the application, the redundant liquid in the fluid circulation loop can be timely discharged from the fluid circulation loop or the fluid can be timely supplemented into the fluid circulation loop by arranging the opening in the fluid storage part, so that the heat exchange performance of the heat management device is prevented from being influenced due to insufficient fluid in the circulation.

In some embodiments, the opening comprises: a fluid inflow port for replenishing the fluid to the fluid storage portion, and at least one fluid discharge port for discharging the fluid out of the fluid circulation loop.

In the embodiment of the application, the plurality of openings, namely the fluid inflow opening and the at least one fluid discharge opening, are arranged in the fluid storage part, so that the quantity of the fluid in the fluid circulation loop can be controlled more rapidly and flexibly, and the heat exchange performance of the heat exchange device is further ensured.

In some embodiments, the thermal management device comprises: a first detection module for detecting a first temperature and a second temperature, the first temperature being a temperature of the fluid at a first location in the fluid circulation loop, the second temperature being a temperature of the fluid at a second location in the fluid circulation loop, the fluid flowing from the heat exchange portion to the fluid storage portion or the refrigeration portion at the first location, the fluid flowing from the heat exchange portion or the refrigeration portion to the heat exchange portion at the second location; the control module is used for controlling the heating module or the refrigerating module to heat or refrigerate the fluid so as to increase or decrease the second temperature.

In the embodiment of the application, through setting up first detection module, can make thermal management device in time obtain the temperature of first position, second position department in the fluid circulation loop to thereby control heating module and refrigerating module rapidly through control module, thereby make heating module and refrigerating module heat or refrigerate the fluid as required, realize the accurate control to battery temperature.

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

In some embodiments, the thermal management device comprises: and the flow regulating module is used for regulating the flow of the fluid in the fluid circulation loop.

In the embodiment of the application, by arranging the flow regulating module, the flow of the fluid in the fluid circulation loop can be controlled, and the damage to the fluid circulation loop caused by overlarge flow of the fluid in the fluid circulation loop or the influence on the heat exchange performance of the thermal management device caused by overlarge flow of the fluid can be avoided.

In some embodiments, the flow regulation module comprises: the switch valve is arranged at the opening and is used for adjusting the flow of the fluid at the opening.

In some embodiments, the thermal management device further comprises: and a second detection module for detecting a first pressure, the first pressure being the pressure of the fluid at the second location.

In the embodiment of the application, through setting up the pressure that the second detection module can detect the fluid in the fluid circulation circuit in the second position, monitor the fluid in the fluid circulation circuit especially will flow into the fluid pressure of heat exchange part for control module can carry out accurate regulation to the fluid pressure in the circulation circuit according to the fluid pressure data that the second detection module detected, helps promoting heat management device's wholeness ability.

In some embodiments, the thermal management device comprises: the power module is arranged in the fluid circulation loop and used for driving the fluid in the fluid circulation loop to flow.

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

In some embodiments, the power station is a power exchange station comprising at least one electrical cabinet in which the battery is disposed, the heat exchange portion being connected with a thermal management component of the battery or disposed around the electrical cabinet.

In some embodiments, the power station is an energy storage power station comprising at least one electrical cabinet in which the battery is disposed, the heat exchange portion being connected with a thermal management component of the battery or disposed around the electrical cabinet.

In an embodiment of the application, an electrical cabinet is provided in the power station, the battery is arranged in the electrical cabinet, and the heat exchange part of the fluid circulation loop in the thermal management device is directly connected with the thermal management part of the battery or is arranged around the electrical cabinet. The temperature of the battery in the electric cabinet can be precisely controlled by directly replacing the fluid in the thermal management component of the battery or by controlling the temperature of the environment surrounding the electric cabinet.

In some embodiments, the control module is to control the heating module to heat the fluid to raise the second temperature if 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 if the first temperature is greater than a second threshold.

In the embodiment of the application, the control module respectively controls the heating module and the refrigerating module to work to adjust the temperature of the fluid under the condition that the first temperature is smaller than the first threshold and larger than the second threshold, so that the temperature of the fluid can be accurately controlled within the range larger than the second threshold and smaller than the first threshold, and the battery temperature is controlled to be stabilized within a certain range, and the range can be a temperature range in which the battery can maintain efficient cycle performance and ensure safety, so that the thermal management device can effectively perform thermal management on the battery in the power station.

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

In the embodiment of the application, the control module increases the temperature of the fluid to the first preset temperature by controlling the heating module, namely, the control module directly heats the temperature of the fluid to a preset value, and the preset value is in a temperature range formed by the second threshold and the first threshold, so that the temperature of the fluid can be controlled in a required temperature range, and further, the effective control of the temperature of the battery is realized.

In some embodiments, the control module is configured 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 an ambient temperature, a distance between the second position and the battery, and a length of the fluid circulation loop between the second position and the battery.

In the embodiment of the application, considering the influence of factors such as the ambient temperature, the distance between the second position and the battery, the length of the fluid circulation loop and the like on the temperature, the control module increases the fluid temperature to a second preset temperature by controlling the heating module, wherein the second preset temperature is higher than the first preset temperature and possibly does not fall in a temperature range formed by the second threshold and the first threshold, but the second preset temperature can effectively compensate the heat loss of the fluid on a path from passing through the second position to a thermal management component entering the battery or reaching the periphery of the battery under the influence of the factors. Therefore, the thermal management device can control the temperature of the battery more accurately, and the performance of the thermal management device is improved.

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

In some embodiments, the control module is configured to control the refrigeration module to cool 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, and the second preset value is set according to at least one of an ambient temperature, a distance between the second position and the battery, and a length of the fluid circulation loop between the second position and the battery.

In this embodiment, similar to the heating module, the cooling module may directly reduce the second temperature to the first preset temperature, that is, directly reduce the second temperature to the required temperature range, or reduce the second temperature to the third preset temperature, where 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 is capable of effectively compensating for the heat absorbed by the fluid on the path from the second position to the thermal management component entering the battery or to the periphery of the battery under the influence of the above factors. Therefore, the thermal management device can control the temperature of the battery more accurately, and the performance of the thermal management device is improved.

In some embodiments, the control module is to control the flow adjustment module to increase the flow rate until the first pressure is greater than or equal to a third threshold value if the first pressure is less than the third threshold value; or controlling the flow regulating module to reduce the flow until the first pressure is less than or equal to a fourth threshold value if the first pressure is greater than the fourth threshold value.

In the embodiment of the application, the control module can also control the flow regulating module to regulate the pressure of the fluid in the fluid circulation loop under the condition that the first pressure is smaller than the third threshold value and larger than the fourth threshold value, so that the pressure in the fluid circulation loop is regulated and controlled efficiently and accurately, and the overall performance of the thermal management device is further improved.

In a second aspect, a power exchange station is provided, comprising a thermal management device according to any of the embodiments of the first aspect.

In a third aspect, there is provided an energy storage power station comprising a thermal management device according to any of the embodiments of the first aspect.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings that are needed in the embodiments of the present application will be briefly described below, and it is obvious that the drawings described below are only some embodiments of the present application, and that other drawings may be obtained according to the drawings without inventive effort for a person skilled in the art.

FIG. 1 is a schematic block diagram of an electrical device of the present application;

FIG. 2 is a schematic block diagram of a battery of the present application;

FIG. 3 is a schematic block diagram of a thermal management device of the present application;

FIG. 4 is a schematic block diagram of a power plant of the present application;

FIG. 5 is another schematic block diagram of a thermal management device of the present application;

FIG. 6 is a schematic block diagram of a power plant of the present application;

fig. 7 is a schematic block diagram of an energy storage power station of the present application.

Detailed Description

Embodiments of the present application are described in further detail below with reference to the accompanying drawings and examples. The following detailed description of the embodiments and the accompanying drawings are provided to illustrate the principles of the present application and are not intended to limit the scope of the application, i.e., the application is not limited to the embodiments described.

In the description of the present application, it is to be noted that, unless otherwise indicated, the meaning of "plurality" is two or more; the terms "upper," "lower," "left," "right," "inner," "outer," and the like indicate an orientation or positional relationship merely for convenience of description and to simplify the description, and do not indicate or imply that the devices or elements being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus are not to be construed as limiting the present application. Furthermore, the terms "first," "second," "third," and the like are used for descriptive purposes only and are not to be construed as indicating or implying relative importance. The "vertical" is not strictly vertical but is within the allowable error range. "parallel" is not strictly parallel but is within the tolerance of the error.

The directional terms appearing in the following description are all directions shown in the drawings and do not limit the specific structure of the present application. In the description of the present application, it should also be noted that, unless explicitly specified and limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be either fixedly connected, detachably connected, or integrally connected, for example; can be directly connected or indirectly connected through an intermediate medium. The specific meaning of the terms in the present application can be understood as appropriate by one of ordinary skill in the art.

The term "and/or" in this application is merely an association relation describing an associated object, and indicates that three relations may exist, for example, a and/or B may indicate: there are three cases, a, B, a and B simultaneously. In this application, the character "/" generally indicates that the associated object is an or relationship.

Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs; the terminology used in the description of the application herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the application; the terms "comprising" and "having" and any variations thereof in the description and claims of the present application and in the description of the figures above are intended to cover non-exclusive inclusions. The terms first, second and the like in the description and in the claims or in the above-described figures, are used for distinguishing between different objects and not necessarily for describing a particular sequential or chronological order.

Reference in the specification 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 such phrases 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. Those of skill in the art will explicitly and implicitly understand that the embodiments described herein may be combined with other embodiments.

The term "plurality" as used herein refers to two or more (including two), and similarly, "plural sets" refers to two or more (including two), and "plural sheets" refers to two or more (including two), and plural columns refer to two or more (including two).

In the industrial environment of automobiles using conventional energy as power supply, the problem of environmental pollution is more serious, and new energy automobiles are actively developed, so that the damage to the environment can be reduced. For new energy automobiles, battery technology is an important factor concerning the development of the new energy automobiles.

The region of China is extremely wide, and the climate and temperature differences of all the regions are quite different. And temperature is one of the important factors affecting the cycle performance and safety performance of the battery. In actual production and life, the low temperature of the battery easily leads to lower cycle performance and capacity retention rate; the excessive temperature of the battery easily causes unnecessary side reactions in the battery, causes the reduction of the battery capacity, and causes the safety problem of the battery when serious. Therefore, thermal management of batteries is an important component of battery technology.

Currently, thermal management of batteries is generally accomplished by providing the batteries with thermal management components. For example, a fan and an air duct are provided around the battery, or a water cooling plate is provided, and the battery is thermally managed by connecting the battery to a motor vehicle or a water supply member. However, in the case where some batteries are not placed in a vehicle (e.g., batteries in a power station), the thermal management components of the batteries themselves are not operational, and efficient thermal management of the batteries is not possible.

In view of this, the present application provides a thermal management device that can perform effective thermal management on a battery in a power station, helps to improve performance and safety of the battery in the power station, and further expands the application range of the battery.

As shown in fig. 1, a schematic structural diagram of a vehicle 1 according to the present application is shown, where the vehicle 1 may be a fuel-oil vehicle, a gas-oil vehicle or a new energy vehicle, and the new energy vehicle may be a pure electric vehicle, a hybrid vehicle or an extended range vehicle. The motor 11, the controller 12 and the battery 10 may be provided inside the vehicle 1, and the controller 12 is configured to control the battery 10 to supply power to the motor 11. For example, the battery 10 may be provided at the bottom or the head or the tail of the vehicle 1. The battery 10 may be used for power supply of the vehicle 1, e.g. the battery 10 may be used as an operating power source for the vehicle 1, for electrical circuitry of the vehicle 1, e.g. for start-up, navigation and operational power requirements of the vehicle 1. In another embodiment of the present application, the battery 10 may not only serve as an operating power source for the vehicle 1, but also as a driving power source for the vehicle 1, instead of or in part instead of fuel oil or natural gas, to provide driving power for the vehicle 1.

It should be understood that the present application uses a vehicle as an example of electric equipment, but the electric equipment may also be a mobile phone, a portable device, a notebook computer, a ship, a spacecraft, an electric toy, an electric tool, and the like. The vehicle can be a fuel oil vehicle, a fuel gas vehicle or a new energy vehicle, and the new energy vehicle can be a pure electric vehicle, a hybrid electric vehicle or a range-extended vehicle; spacecraft including airplanes, rockets, space planes, spacecraft, and the like; the electric toy includes fixed or mobile electric toys, such as a game machine, an electric car toy, an electric ship toy, and an electric airplane toy; power tools include metal cutting power tools, grinding power tools, assembly power tools, and railroad power tools, such as electric drills, electric grinders, electric wrenches, electric screwdrivers, electric hammers, impact drills, concrete shakers, and electric planers, among others. The embodiment of the application does not limit the electric equipment in particular.

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 referred to in the present application may include a battery module or a battery pack, or the like. The battery generally includes a case for enclosing one or more battery cells. The case body can prevent liquid or other foreign matters from affecting the charge or discharge of the battery cells.

To meet different power requirements, the battery may include a plurality of battery cells, where the plurality of battery cells may be connected in series or parallel or a series-parallel connection, and the series-parallel connection refers to a mixture of series and parallel connection. The battery may also be referred to as a battery pack. Optionally, the plurality of battery cells may be connected in series or parallel or in series-parallel to form a battery module, and then the plurality of battery modules are connected in series or parallel or in series-parallel to form a battery. That is, a plurality of battery cells may be directly assembled into a battery, or may be assembled into a battery module first, and the battery module may be assembled into a battery.

For example, as shown in fig. 2, a schematic structure of a battery 10 according to the present application, the battery 10 may include a plurality of battery cells 20. The number of the battery cells 20 may be set to any value. The plurality of battery cells 20 may be connected in series, parallel, or series-parallel to achieve a larger capacity or power.

Alternatively, 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, a magnesium ion battery, or the like, to which the embodiment of the present application is not limited. In some embodiments, the battery cells 20 may also be referred to as cells.

The battery cell 20 includes an electrode assembly and an electrolyte, and the electrode assembly is composed of a positive electrode sheet, a negative electrode sheet, and a separator. The battery cell mainly relies on metal ions to move between the positive and negative electrode plates to operate. The positive plate comprises a positive electrode current collector and a positive electrode active material layer, wherein the positive electrode active material layer is coated on the surface of the positive electrode current collector, the current collector without the positive electrode active material layer protrudes out of the current collector coated with the positive electrode active material layer, and the current collector without the positive electrode active material layer is used as a positive electrode lug. Taking a lithium ion battery as an example, the material of the positive electrode current collector may be aluminum, and the positive electrode active material may be lithium cobaltate, lithium iron phosphate, ternary lithium, lithium manganate or the like. The negative electrode sheet comprises a negative electrode current collector and a negative electrode active material layer, wherein the negative electrode active material layer is coated on the surface of the negative electrode current collector, the current collector without the negative electrode active material layer protrudes out of the current collector with the coated negative electrode active material layer, and the current collector without the negative electrode active material layer is used as a negative electrode tab. The material of the negative electrode current collector may be copper, and the negative electrode active material may be carbon, silicon, or the like. In order to ensure that the high current is passed without fusing, the number of positive electrode lugs is multiple and stacked together, and the number of negative electrode lugs is multiple and stacked together. The separator may be made of Polypropylene (PP) or Polyethylene (PE). In addition, the electrode assembly may be a wound structure or a lamination structure, and the embodiment of the present application is not limited thereto.

Optionally, the battery 10 further includes a housing, a battery management system, and associated mounting structures. Wherein the battery management system includes a thermal management component.

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

Fig. 3 is a schematic structural diagram of a thermal management device 300 according to an embodiment of the present application, where the thermal management device 300 is used to regulate the temperature of a battery 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 loop 303. Wherein the fluid circulation loop 303 has a fluid therein, the fluid circulation loop 303 comprises a heat exchange portion 3031, a fluid storage portion 3032 and a refrigeration portion 3033. The heat exchange portion 3031 is for heat exchange with the battery 10, and the fluid storage portion 3032 is for storing a fluid. The heating module 301 is used to heat the fluid in the fluid storage portion 3032 and the refrigeration module 303 is used to refrigerate the fluid in the refrigeration portion 3033.

Specifically, the thermal management device 300 is applied to a situation where the thermal management components of the battery 10 itself cannot function properly, especially a use situation such as a power station. 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 portion 3032 or the refrigeration portion 3033 to the heat exchange portion 3031 and then flows back to the fluid storage portion 3032 or the refrigeration portion 3033, and the fluid exchanges heat with the battery 10 in the heat exchange portion 3031, so that the thermal management device 300 can effectively control the temperature of the battery 10 by heating or refrigerating the fluid.

It should be understood that the fluid circulation loop 303 may be a circulation loop formed by connecting a heat exchange portion 3031, a heating portion 3032 and a cooling portion 3033 in series; as shown in fig. 3, the heat exchange portion 3031 may form a circulation circuit with the heating portion 3032 and the cooling portion 3033, respectively. Fig. 3 illustrates only one possible scenario, and the embodiment of the present application is not limited thereto.

In this embodiment, on the one hand, the thermal management device 300 can control the temperature of the battery 10 in the power station, so as to solve the problem that the battery 10 in the power station cannot perform effective thermal management on the battery 10 due to the fact that the thermal management components of the battery 10 cannot work independently. The performance and the safety of the battery 10 in the power station are improved, and the risk that the performance of the battery 10 is reduced or potential safety hazards are caused due to the fact that the temperature of the battery 10 in the power station is too high or too low is reduced, so that the safety of the power station is improved. On the other hand, the thermal management device 300 controls the temperature of the battery 10 by controlling the temperature of the fluid, and has high heat conversion efficiency and high temperature control accuracy, compared with other thermal management methods such as air cooling, so that the temperature of the battery 10 can be controlled within a proper range, and the thermal management efficiency and the thermal management effect of the thermal management device 300 can be improved.

Fig. 4 is a schematic block diagram of a power station 400 according to an embodiment of the present invention.

Alternatively, the power station 400 is a power exchange station comprising at least one electric cabinet 401, the battery 10 being arranged in the electric cabinet 401, the heat exchanging portion 3031 being connected to the thermal management components of the battery 10 or being arranged around the electric cabinet 401.

In particular, in the case where 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 may be directly connected to the thermal management component of the battery 10, for example, to a water cooling plate of the battery 10. For another example, when the battery cells 20 are filled with the coolant, the coolant inlet and the coolant outlet of the battery 10 are connected. The thermal management component of the battery 10 according to the embodiment of the present 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 components of the battery 10, and is capable of displacing fluid in the fluid circulation loop 303 with the thermal management components, 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.

In the case where the battery 10 is not provided with the corresponding heat management part, the heat exchange portion 3031 of the fluid circulation loop 303 in the heat management apparatus 300 is disposed around the electric cabinet 401, the battery 10 is disposed in the electric cabinet 401, and by disposing the heat exchange portion 3031 of the fluid circulation loop 303 around the electric cabinet 401, the ambient temperature around the battery 10 can be effectively controlled, so that effective heat management of the battery 10 in the power station 400 is achieved by the influence of the ambient temperature on the temperature of the battery 10.

In this embodiment, by directly connecting the heat exchange portion 3031 of the fluid circulation loop 303 with the thermal management component of the battery 10, or disposing the heat exchange portion 3031 around the electric cabinet 400 of the power exchange 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, so as to achieve precise control of the temperature of the battery 10 in the power station 400.

Alternatively, the power station 400 is an energy storage power station comprising at least one electric cabinet 401, the battery 10 being arranged in the electric cabinet 401, the heat exchanging portion 3031 being connected to the thermal management components of the battery 10 or being arranged around the electric cabinet 401.

Alternatively, in some other embodiments, where the power station 400 is a substation, the power station comprises at least one electrical cabinet 401, the battery 10 is arranged in the electrical cabinet 401, and the heat exchanging portion 3031 is connected to the thermal management components of the battery 10 or is arranged around the electrical cabinet 401.

Optionally, referring to fig. 3, the thermal management device 300 includes a control module 304, where the control module 304 is configured to control the heating module 301 to heat the fluid or control the cooling module 302 to cool the fluid.

Specifically, the control module 304 may be a single-chip microcomputer, or may be a master control of the power station 400, or a single-chip microcomputer connected to the master 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 may be a read-only memory (ROM), a static storage device and a random access memory (random access memory, RAM), in which the computer program may be stored.

The processor may employ a general-purpose central processing unit (central processing unit, CPU), microprocessor, application specific integrated circuit (application specific integrated circuit, ASIC), graphics processor (graphics processing unit, GPU) or one or more integrated circuits for executing associated programs to perform the functions required by the units, modules in the thermal management device of the embodiments of the present application.

The processor may also be an integrated circuit chip with signal processing capabilities. In the implementation process, the functions required to be executed by the units and modules in the thermal management device of the embodiments of the present application may be implemented by an integrated logic circuit of hardware in a processor or instructions in a software form.

The processor may also be a general purpose processor, a digital signal processor (digital signal processing, DSP), an ASIC, an off-the-shelf programmable gate array (field programmable gate array, FPGA) or other programmable logic device, discrete gate or transistor logic device, discrete hardware components. The disclosed methods, steps, and logic blocks in the embodiments of the present application may be implemented or performed. A general purpose processor may be a microprocessor or the processor may be any conventional processor or the like. The steps of a method disclosed in connection with the embodiments of the present application may be embodied directly in a hardware processor for execution, or in a combination of hardware and software modules in the processor for execution. The software modules may be located in a random access memory, flash memory, read only memory, programmable read only memory, or electrically erasable programmable memory, registers, etc. as well known in the art. The storage medium is located in a memory, and the processor reads information in the memory, and combines with hardware to implement the functions required to be executed by the units and modules included in the apparatus of the embodiments of the present application.

It should be noted that although the control module 304 is described above with reference to a memory, processor, communication interface, in particular implementations, those skilled in the art will appreciate that the control module 304 may also include hardware devices that perform other additional functions, as desired. Furthermore, it will be appreciated by those skilled in the art that the control module 304 may also include only the necessary components to implement embodiments of the present application.

In this embodiment, the control module 304 is disposed in the thermal management device 300 to automatically control the temperature of the fluid, so as to automatically control the temperature of the battery 10, thereby effectively improving the working efficiency of the thermal management device 300 and the power station 400.

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

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

In particular, the fluid storage portion 3032 may be a water reservoir, or the like. The heater 3011 may be disposed directly in the fluid storage portion 3032 in direct contact with the fluid in the fluid storage portion 3032, the heater 3011 being operative to directly heat the fluid in the fluid storage portion 3032; the heater 3011 may also be disposed about the fluid storage portion 3032 in contact with the fluid storage portion 3032, the heater 3011 being operative to heat fluid in the fluid storage portion 3032 by heating an outer wall of the fluid storage portion 3032.

It should be appreciated that although the fluid storage portion 3032 may be a water reservoir, etc., the water reservoir, etc., as described herein is not limiting of the fluid therein. In other words, the fluid in the water storage tank can be water or other fluids, and the water storage tank is the same.

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

In this embodiment, the heating module 301 heats the fluid in the fluid storage portion of the fluid circulation loop by using the electric heater, so that the heat exchange efficiency of the electric heater is high, and the heating of the fluid is relatively uniform, which is helpful to improve the heating efficiency of the heating module 301 and help the heating performance and the working efficiency of the thermal management device 300.

Preferably, the electric heater is an electric heater in the form of a heating tube, which is more compact in volume and shape, facilitates the overall arrangement of the thermal management device 300 and helps to save space of the thermal management device 300.

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

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

With continued reference to fig. 5, the refrigeration module 302 optionally includes an evaporator 3021 and at least one condenser 3022, where the evaporator 3021 is connected to the condenser 3022, and the evaporator 3021 is configured to absorb heat from fluid in the refrigeration module 302, and the condenser 3022 is configured to discharge heat absorbed by the evaporator 3021.

Specifically, the refrigeration module 302 has a refrigerant therein, and the refrigerant may be at least one of fluorine, chlorine, bromine derivatives of saturated hydrocarbon, ammonia, hydrogen, helium, and the like, and the embodiment of the present application does not limit the types of the refrigerant. In the heat management apparatus 300, the cooling portion of the fluid circulation circuit 303 is disposed in the evaporator 3021 of the cooling module 302, and when the cooling module 302 is operated, the refrigerant in the evaporator 3021 absorbs heat of the cooling portion 3033 of the fluid circulation circuit 303 and evaporates, thereby cooling the fluid in the cooling portion 3033. The refrigerant in the evaporator 3021 absorbs heat, evaporates, enters the condenser 3022, condenses and liquefies in the condenser 3022, changes from a gaseous state to a liquid state, and releases heat, i.e., discharges heat absorbed by the evaporator 3021.

In this embodiment, the refrigeration module 302 has an evaporator 3021 and a condenser 3022, and the refrigeration portion 3033 of the fluid circulation loop 303 is cooled by the cooperation of the evaporator 3021 and the condenser, so that the refrigeration efficiency of the refrigeration module 303 is improved, and the refrigeration performance and the working efficiency of the thermal management device 300 are improved.

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

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

With continued reference to fig. 5, the fluid storage portion 3032 optionally includes an opening 3032a, the opening 3032a being used to replenish fluid into the fluid storage portion 3032 or to drain fluid out of the fluid circulation loop 303.

In particular, the fluid storage portion 3032 may be provided with one or more openings 3032a, and in the case where one opening 3032a is provided, the opening 3032a may be both a fluid inlet and a fluid outlet. The fluid circulation loop 303 of the thermal management device 300 can be made to operate stably by replenishing fluid into the fluid storage portion 3032 through the opening 3032a or discharging fluid out of the fluid storage portion 3032 according to the use requirement of the thermal management device 300.

In this embodiment, the opening 3032a is provided in the fluid storage portion 3032, so that the amount of fluid in the fluid storage portion 3032 can be flexibly controlled, thereby flexibly controlling the total amount of fluid in the fluid circulation loop 303, effectively avoiding the situation that 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 avoiding damage to the fluid circulation loop 303 caused by excessive fluid and excessive pressure in the fluid circulation loop 303, and helping to improve the service life of the thermal management device 300.

Preferably, the opening 3032a includes a fluid flow inlet and at least one fluid outlet. The fluid inflow port is used to replenish the fluid in the fluid storage portion 3032, and the fluid discharge port is used to discharge the fluid to the outside of the fluid circulation circuit 303.

Specifically, the fluid storage portion 3032 may be provided with a plurality of openings 3032a, and the plurality of openings 3032a, i.e., the fluid inflow port and at least one fluid discharge port, are disposed at a position higher than the fluid discharge port on the fluid storage portion 3032. For example, in the case where the fluid storage portion 303 is a cubic box, the fluid inflow port may be provided on the top wall of the box, and the fluid discharge port may be provided on the side wall of the box. The fluid inlet port is provided in the top wall of the housing to facilitate fluid flow into the fluid storage portion 3032 under gravity, while the fluid outlet port is provided in the side wall of the housing to facilitate fluid flow out of the fluid storage portion 3032 under gravity. Thereby, the fluid can be replenished into the fluid storage portion 3032 or discharged to the outside of the fluid storage portion without the aid of an external force.

In the present embodiment, on the one hand, providing the plurality of openings 3032a in the fluid storage portion 3032 contributes to an improvement in the control efficiency of the total amount of fluid in the fluid circulation circuit 303; on the other hand, the replenishment and discharge of the fluid in the fluid storage portion 3032 can be realized by utilizing gravity, power consumption caused by the replenishment and discharge of the fluid can be saved, and the work efficiency of the thermal management device can be improved.

With continued reference to fig. 5, as shown in fig. 5, the thermal management device 300 includes a first detection module 305 for detecting a first temperature T1 and a second temperature T2. Wherein the first temperature T1 is the temperature of the fluid at the first position P1 in the fluid circulation loop 303; the second temperature T2 is the temperature of the fluid at the second position P2 in the fluid circulation loop 303. At the first position P1, fluid flows from the heat exchange portion 3031 to the fluid storage portion 3032 or to the refrigeration portion 3033; at the second position P2, fluid flows from the fluid storage portion 3032 or the refrigeration portion 3033 to the heat exchange portion 3031.

Optionally, the control module 304 is configured to control the heating module 301 or the cooling module 302 to heat or cool the fluid to raise or lower the second temperature T2.

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

In this embodiment, by providing the first detection module 305, the thermal management device 300 can timely 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, so that whether the temperature of the battery 10 is overheated or supercooled can be determined by the first temperature T1, and the fluid is heated or refrigerated, so that the second temperature T2 flows into the fluid circulation loop 3031 again at a desired temperature to adjust the temperature of the battery 10, thereby the thermal management device 300 can accurately and timely regulate the temperature of the battery 10.

Alternatively, the first position P1 is located between the heat exchange portion 3031 and the refrigeration portion 3033, and the second position P2 is located between the heat exchange portion 3031 and the fluid storage portion 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, the switch valve 3061 being disposed at the opening 3032a for adjusting the flow of fluid at the opening 3032 a.

Optionally, a switching valve 3061 is provided at the second position P2 for adjusting the flow of fluid at the water inlet of the heat exchanging part 3031.

In this embodiment, by providing the flow adjustment module 306, the flow of the fluid in the fluid circulation loop 303 can be flexibly controlled, so that damage to the fluid circulation loop 303 caused by excessive flow of the fluid in the fluid circulation loop 303 or influence on heat exchange between the heat exchange portion 3031 and the battery 10 caused by insufficient flow of the fluid can be avoided, thereby helping to improve heat exchange performance of the thermal management device 300 and prolong the service life of the thermal management device 300.

Optionally, referring to fig. 5, the thermal management device further comprises a second detection module 307 for detecting a 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 pressure of the fluid in the current heat exchange portion 3031. The acquisition of the first pressure p helps the thermal management device 300 to adjust the flow rate of the fluid in the fluid circulation loop 303 in time for the pressure condition of the heat exchange portion 3031 so as to ensure a safe and efficient heat exchange process between the battery 10 and the fluid. The second detection module 307 may include a plurality of pressure detection units that respectively detect the pressure of the fluid at different positions in the fluid circulation loop 303, so that the thermal management device 300 can adjust the flow rate of the fluid in the fluid circulation loop 303 according to the pressure of the fluid at the different positions.

In this embodiment, by providing the second detection module 307, the thermal management device 300 can accurately regulate and control the pressure in the fluid circulation loop according to the pressure data of the fluid, so as to help to improve the overall performance of the thermal management device 300.

Optionally, the thermal management device 300 includes a power module (not shown) disposed in the fluid circulation loop 303 for driving fluid flow in the fluid circulation loop 303.

In particular, the power module may include one or more power units. Taking the power unit as an example of a liquid pump, the liquid pump may be disposed at a different position of the fluid circulation circuit 303, and drive fluid to flow in the fluid circulation circuit 303. When the power module comprises only one power unit, the power unit may be arranged at the second position P2, driving fluid into the heat exchanging portion 3031 in time.

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

Next, a further description will be given of how the control module 304 controls the temperature of the fluid.

Optionally, the control module 304 is configured to control the heating module 301 to heat the fluid to raise the second temperature T2 if the first temperature T1 is less than the first threshold.

Optionally, the control module 304 is configured to control the refrigeration module 302 to cool the fluid to decrease the second temperature T2 if 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 indicates that the temperature of the battery 10 is too low, and a temperature rise is required; when the first temperature T1 is greater than the second threshold, it indicates that the temperature of the battery 10 is too high, and a temperature reduction is required. The control module controls the heating module 301 and the cooling module 302 according to the first temperature T1, and timely heats up or cools down the fluid in the fluid circulation loop when the first temperature T1 does not fall within the range from the first threshold to the second threshold, thereby heating up or cooling down the battery 10.

Illustratively, the first threshold is greater than or equal to 10 ℃ and less than or equal to 20 ℃; the second threshold is greater than or equal to 45 ℃ and less than or equal to 55 ℃.

In this embodiment, the control module 304 adjusts the second temperature T2 of the precise control fluid according to the first temperature T1 of the fluid, so as to control the temperature of the battery 10 to be stable within a certain range, wherein the range is a temperature range in which the battery 10 can maintain efficient cycle performance and ensure safety, and thus the thermal management device 300 can effectively perform thermal management on the battery in the power station.

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

Optionally, the control module 304 is configured to control the heating module 301 to heat the fluid to raise the second temperature T2 to a second preset temperature, where the second preset temperature is the first preset temperature plus the 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 screen from the battery 10, and the length of the fluid circulation loop 303 between the second position P2 and the battery 10.

Specifically, the control module 304 may directly cause the heating module 301 to heat the second temperature T2 of the fluid to a first preset temperature, that is, a temperature range from the first threshold value to the second threshold value, when controlling the heating module 301 to heat the fluid. Considering that factors such as the ambient 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, etc. have an influence on the temperature of the fluid in the fluid circulation loop 303, for example, that the ambient temperature is higher than that of the battery 10, 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., heat loss experienced by the fluid during the process of flowing through the second position P2 to the heat exchange portion 3031 is caused, so that the temperature of the fluid for warming the battery 10 at the heat exchange portion 3031 is lower than the second temperature T2. Based on this, the control module 304 may cause the heating module 301 to heat the second temperature T2 of the fluid to a second preset temperature, which is higher than the first preset temperature, when controlling the heating module 301 to heat the fluid, thereby being able to compensate for the heat loss of the fluid caused by the above-mentioned factors such that the temperature of the fluid, which is heat-exchanged with the battery 10, is in the temperature range of the first threshold to the second threshold.

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

Optionally, the control module 304 is configured to control the refrigeration module 302 to cool the fluid to reduce the second temperature T2 to a third preset temperature, where 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 P2 from 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 manner of controlling the heating module 301, the control module 304 may directly cause the cooling module 302 to reduce the second temperature T2 of the fluid to the first preset temperature when controlling the cooling module 302 to cool the fluid; the refrigeration module 302 may also be configured to reduce the second temperature T2 of the fluid to a third preset temperature, where the third preset temperature is less than the first preset temperature, so as to compensate for a temperature increase caused by heat absorption during the flow of the fluid through the second position P2 to the heat exchange portion 3031 when the ambient temperature is too high, 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. Such that the temperature of the fluid that is in heat exchange with the battery 10 is in the temperature range of the first threshold value to the second threshold value.

Optionally, the control module 304 is configured to control the flow adjustment module 306 to increase the flow 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 in the event that the first pressure is greater than the fourth threshold, control the flow adjustment module 306 to decrease the flow 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 a safe and efficient heat exchange efficiency, where a first pressure p less than the third threshold indicates that the fluid pressure is smaller, and insufficient fluid flow may result in a lower heat exchange efficiency, and thus an increase in flow is required to increase the pressure; a first pressure p greater than the fourth threshold indicates a greater fluid pressure that may affect heat exchange efficiency or damage the fluid circulation loop 303, thereby requiring a reduced flow rate to reduce the pressure.

In this embodiment, the control module 304 regulates and controls the pressure of the fluid flowing into the heat exchange portion 3031 according to the first pressure P at the second position P2, so that the pressure in the fluid circulation loop 303 can be regulated and controlled accurately in time, and the overall performance of the thermal management device 300 is further improved.

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

The embodiment of the application further provides an energy storage power station, and fig. 7 is a schematic structural diagram of an energy storage power station 700 of the embodiment. As shown in fig. 7, the energy storage power station 700 includes the thermal management device 300 in any of the possible embodiments of the present application.

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

Claims

A thermal management device for regulating the temperature of a battery in a power plant, the thermal management device comprising:

a heating module, a refrigeration module, and a fluid circulation loop;

The fluid circulation loop has fluid therein, and the fluid circulation loop includes: a heat exchange portion, a fluid storage portion, and a refrigeration portion;

wherein the heat exchange part is used for carrying out 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 refrigerating module is used for refrigerating the fluid in the refrigerating part.
The thermal management device of claim 1, wherein the thermal management device comprises:

and the control module is used for controlling the heating module or the refrigerating module to heat or refrigerate the fluid.
The thermal management device of claim 1 or 2, wherein the heating module comprises:

at least one heater for heating the fluid in the fluid storage section.
A thermal management device in accordance with claim 3, wherein said refrigeration module comprises:

an evaporator for absorbing heat of the fluid in the refrigeration module;

and at least one condenser connected with the evaporator for discharging heat absorbed by the evaporator.
The thermal management device of any one of claims 1-4, wherein the fluid storage section comprises:

an opening for replenishing the fluid to the fluid storage portion or discharging the fluid to the outside of the fluid circulation circuit.
The thermal management device of claim 5, wherein the fluid storage section opening comprises:

a fluid inflow port for replenishing the fluid to the fluid storage portion, and at least one fluid discharge port for discharging the fluid out of the fluid circulation loop.
The thermal management device of any one of claims 1-6, wherein the thermal management device comprises:

a first detection module for detecting a first temperature and a second temperature, the first temperature being a temperature of the fluid at a first location in the fluid circulation loop, the second temperature being a temperature of the fluid at a second location in the fluid circulation loop, the fluid flowing from the heat exchange portion to the fluid storage portion or the refrigeration portion at the first location, the fluid flowing from the heat exchange portion or the refrigeration portion to the heat exchange portion at the second location;

The control module is used for controlling the heating module or the refrigerating module to heat or refrigerate the fluid so as to increase or decrease the second temperature.
The thermal management device of claim 7, wherein the first location is between the heat exchange portion and the refrigeration portion and the second location is between the heat exchange portion and the fluid storage portion.
The thermal management device of any one of claims 1-8, wherein the thermal management device comprises:

and the flow regulating module is used for regulating the flow of the fluid in the fluid circulation loop.
The thermal management device of claim 9, wherein the flow adjustment module comprises:

the switch valve is arranged at the opening and is used for adjusting the flow of the fluid at the opening.
The thermal management device of claim 9 or 10, further comprising:

a second detection module for detecting a first pressure, the first pressure being the pressure of the fluid at the second location;

the control module is configured to control the flow regulation module to raise or lower the first pressure.
The thermal management device of any one of claims 1-11, wherein the thermal management device comprises:

the power module is arranged in the fluid circulation loop and used for driving the fluid in the fluid circulation loop to flow.
The thermal management device of any one of claims 1-12, wherein the fluid comprises at least one of water, purified water, saline solution, liquid nitrogen.
The thermal management device of claim 1, wherein the power station is a power exchange station comprising at least one electrical cabinet in which the battery is disposed, the heat exchange portion being connected to a thermal management component of the battery or disposed around the electrical cabinet.
The thermal management device of claim 1, wherein the power station is an energy storage power station comprising at least one electrical cabinet in which the battery is disposed, the heat exchange portion being connected to a thermal management component of the battery or disposed around the electrical cabinet.
The thermal management device of any one of claims 1-15, wherein the control module is configured to control the heating module to heat the fluid to raise the second temperature if the first temperature is less than a first threshold.
The thermal management device of any one of claims 1-15, wherein the control module is configured to control the refrigeration module to cool the fluid to reduce the second temperature if the first temperature is greater than a second threshold.
The thermal management device of claim 16, wherein the control module is configured to control the heating module to heat the fluid to raise the second temperature to a first preset temperature, the first preset temperature being greater than or equal to the first threshold and less than or equal to the second threshold.
The thermal management apparatus of claim 16, wherein the control module is configured 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 an ambient temperature, a distance between the second position and the battery, and a length of the fluid circulation loop between the second position and the battery.
The thermal management device of claim 17, wherein the control module is configured to control the refrigeration module to cool the fluid to reduce the second temperature to a first preset temperature.
The thermal management apparatus of claim 17, wherein the control module is configured to control the refrigeration module to cool 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, and the second preset value is set according to at least one of an ambient temperature, a distance between the first position and the battery, and a length of the fluid circulation loop between the first position and the battery.
The thermal management device of any one of claims 1-21, wherein the control module is to control the flow adjustment module to increase the flow until the first pressure is greater than or equal to a third threshold if the first pressure is less than the third threshold; or controlling the flow adjustment module to decrease the flow rate until the first pressure is less than or equal to a fourth threshold value if the first pressure is greater than the fourth threshold value.
A power plant, characterized in that it comprises a thermal management device according to any one of claims 1-22.
An energy storage power station comprising the thermal management device of any one of claims 1-22.