Thermal management system, energy storage device, control method and storage medium

Abstract

The invention discloses a thermal management system, an energy storage device, a control method and a storage medium. The heat management system is used for the energy storage equipment, the energy storage equipment comprises a heating piece, the heat management system comprises a compressor assembly, a power assembly and a heat exchanger, the compressor assembly is connected with the power assembly, and the compressor assembly and the power assembly are connected with the heat exchanger. The heat management system is configured to control one of the compressor assembly and the power assembly to supply refrigerants to the heat exchanger according to the demand state of the heating piece and the environment temperature. The heat management system is arranged in the energy storage equipment, and one of the compressor assembly and the power assembly is controlled to supply the refrigerant to the heat exchanger according to the demand state of the heating piece and the environment temperature, so that the refrigerant can directly exchange heat with the heating piece, and a complicated air duct or water channel does not need to be designed in the energy storage equipment; the cost, the pipeline complexity and the occupied space of the energy storage equipment are reduced, and miniaturization of the energy storage equipment is facilitated.

Description

Technical Field

[0001] The present invention relates to the technical field of energy storage devices, and in particular to a thermal management system, an energy storage device, a control method of the thermal management system, and a computer-readable storage medium. Background Art

[0002] In the related art, the thermal management system of energy storage equipment usually controls the temperature of the battery cells of energy storage equipment by directly cooling with cold air or indirectly cooling with cold water through cold plates. However, the use of air cooling and water cooling requires consideration of factors such as the uniformity of the wind field, the uniformity of the water pipe flow, the difference in the heat exchange performance of the cold plate, and the fluctuation of the pipeline flow. It is necessary to design appropriate air ducts or water channels in the energy storage equipment, resulting in high cost of energy storage equipment, complex pipeline design, and the need to occupy a large amount of space. Summary of the invention

[0003] Embodiments of the present invention provide a thermal management system, an energy storage device, a control method of the thermal management system, and a computer-readable storage medium to solve at least one of the above-mentioned technical problems.

[0004] A thermal management system provided in an embodiment of the present invention is used for an energy storage device, wherein the energy storage device includes a heat generating component, and the thermal management system includes a compressor assembly, a power assembly and a heat exchanger, wherein the compressor assembly and the power assembly are connected, and the compressor assembly and the power assembly are respectively connected to the heat exchanger, and the heat exchanger is connected to the heat generating component, and the thermal management system is configured to control one of the compressor assembly and the power assembly to supply refrigerant to the heat exchanger according to the demand state of the heat generating component and the ambient temperature.

[0005] In this way, by setting up a thermal management system in the energy storage device, and controlling one of the compressor assembly and the power assembly to supply refrigerant to the heat exchanger in contact with the heat element according to the demand state of the heat element and the ambient temperature, the refrigerant can directly exchange heat with the heat element. There is no need to design complex air ducts or water channels in the energy storage device, which reduces the cost of the energy storage device, the complexity of the pipelines and the occupied space, and is conducive to the miniaturization of the energy storage device.

[0006] In certain embodiments, when the heat generating component is in a state requiring heat dissipation and a high temperature environment, the thermal management system is configured to control the compressor assembly to supply refrigerant to the heat exchanger; when the heat generating component is in a state requiring heat dissipation and a low temperature environment, the thermal management system is configured to control the power assembly to supply refrigerant to the heat exchanger.

[0007] In this way, when the heating element is in a high-temperature environment and needs to dissipate heat, a large amount of refrigerant is needed for heat dissipation, so that the refrigerant required for heat dissipation can be transferred to the heating element for heat dissipation through the compressor, thereby improving the heat dissipation efficiency; when the heating element is in a low-temperature environment and needs to dissipate heat, the low-temperature environment can take away part of the heat, and a large amount of refrigerant is not needed to participate in the heat dissipation, so that the refrigerant required for heat dissipation can be transferred to the heating element for heat dissipation through the power component, thereby reducing energy consumption.

[0008] In certain embodiments, the thermal management system includes an electric heating element. When the heating element is in a heating demand state and a low temperature environment, the thermal management system is configured to control the power component to supply refrigerant to the heat exchanger and the electric heating element and to control the electric heating element to heat the refrigerant.

[0009] In this way, when the heating element is in a low-temperature environment and needs to be heated, the refrigerant is preheated by providing an electric heating element, so that the refrigerant can heat the heating element.

[0010] In certain embodiments, the thermal management system includes a condenser, a liquid storage tank, a bypass valve, a shut-off valve and an electronic expansion valve, the inlet of the condenser is connected to the compressor assembly, the outlet of the condenser is connected to the inlet of the liquid storage tank, the liquid storage tank includes a first outlet and a second outlet, the first outlet is connected to the electronic expansion valve through the bypass valve and the power assembly respectively, the second outlet is connected to the electronic expansion valve through the shut-off valve, the electronic expansion valve is connected to the inlet of the heat exchanger, and the outlet of the heat exchanger is respectively connected to the compressor assembly and the liquid storage tank.

[0011] In this way, by setting up a condenser, a liquid storage tank, a bypass valve, a stop valve and an electronic expansion valve, the high-temperature and high-pressure refrigerant flowing out of the compressor can be condensed by the condenser into a high-pressure and low-temperature liquid refrigerant and stored in the liquid storage tank. The bypass valve and the stop valve can limit the flow direction of the refrigerant. Then, after the high-pressure and low-temperature liquid refrigerant is throttled by the electronic expansion valve, the low-temperature and low-pressure refrigerant formed can fully contact the heat generating component to dissipate heat, thereby improving the heat dissipation efficiency.

[0012] In certain embodiments, when the heat generating component is in a state where heat dissipation is required and in a high temperature environment, the compressor assembly transports the refrigerant to the condenser for heat exchange, and the refrigerant that has undergone heat exchange passes through the liquid storage tank, the bypass valve, the stop valve and the electronic expansion valve and then enters the heat exchanger for heat dissipation, and the refrigerant that has undergone heat dissipation flows back to the compressor assembly.

[0013] In this way, the refrigerant after heat dissipation can absorb heat and change from liquid to gas, so that by controlling the gaseous refrigerant after heat dissipation to flow back to the compressor, the refrigerant can be reused without causing liquid hammer to the compressor.

[0014] In certain embodiments, the power assembly includes a first valve, a second valve and a fluorine pump, the first outlet is connected to the fluorine pump through the first valve, and the fluorine pump is connected to the heating element through the second valve and the electronic expansion valve. When the heating element is in a state of heat dissipation demand and a low-temperature environment, the compressor assembly, the bypass valve, and the stop valve are closed, and the first valve and the second valve are opened, and the fluorine pump supplies the refrigerant in the liquid storage tank to the heat exchanger for heat dissipation.

[0015] In this way, by arranging the first valve and the second valve on both sides of the fluorine pump respectively, the opening and closing of the fluorine pump can be controlled by the first valve and the second valve, thereby avoiding confusion between the compressor assembly and the power assembly.

[0016] In certain embodiments, the thermal management system includes a one-way valve and a three-way valve, the first end of the three-way valve being connected to the heat exchanger via the one-way valve, the second end of the three-way valve being connected to the inlet of the condenser, and the third end of the three-way valve being connected to the liquid storage tank; when the heating element is in a state where heat dissipation is required and the environment is low temperature, the refrigerant heat exchanged through the heat exchanger flows into the condenser through the one-way valve and the three-way valve, and the refrigerant after heat exchange through the condenser flows into the liquid storage tank; when the heating element is in a state where heating is required and the environment is low temperature, the refrigerant heat exchanged through the heat exchanger flows into the liquid storage tank through the one-way valve and the three-way valve.

[0017] In this way, by setting a one-way valve and a three-way valve, the flow direction of the refrigerant can be controlled, so that the refrigerant can flow into the condenser for heat exchange according to the different demand states of the heating element, without the participation of the compressor, which is conducive to improving the heat dissipation efficiency. Or according to the different demand states of the heating element, the refrigerant can be controlled to enter the liquid storage tank after heat exchange with the heating element, reducing the time for the refrigerant to absorb heat at the electric heating element, which is conducive to improving the heating efficiency.

[0018] In certain embodiments, the heating element includes an energy storage power supply and an energy storage inverter, the energy storage power supply and the energy storage inverter are connected in series, the heat exchanger includes a first heat exchanger and a second heat exchanger, the first heat exchanger is connected to the energy storage power supply, the second heat exchanger is connected to the energy storage inverter, the first heat exchanger and the second heat exchanger are connected in series or the first heat exchanger and the second heat exchanger are connected in parallel.

[0019] In this way, by connecting the energy storage power supply and the energy storage inverter in series, the refrigerant can continue to exchange heat with the energy storage inverter after the heat exchange of the energy storage power supply, so that the refrigerant can be fully converted into gaseous refrigerant, avoiding liquid refrigerant entering the compressor to cause liquid hammer. By connecting the first heat exchanger and the second heat exchanger in parallel, the energy storage power supply and the energy storage inverter can be cooled at the same time, improving the heat dissipation efficiency.

[0020] In certain embodiments, the compressor assembly includes a compressor, an oil-liquid separator, an exhaust check valve and an oil return pipe, the compressor outlet is connected to the inlet of the oil-liquid separator, the first outlet of the oil-liquid separator is connected to the condenser of the energy storage device through the exhaust check valve, and the second outlet of the oil-liquid separator is connected to the inlet of the compressor through the oil return pipe.

[0021] Thus, by providing an oil separator and an oil return pipe, the lubricating oil in the refrigerant can be recovered. By providing an exhaust check valve, the refrigerant can be prevented from flowing back into the compressor, thereby damaging the compressor.

[0022] An energy storage device provided in an embodiment of the present invention includes the thermal management system described in any one of the above embodiments.

[0023] A control method for a thermal management system provided in an embodiment of the present invention is used for an energy storage device, wherein the energy storage device includes a heat generating component, and the thermal management system includes a compressor assembly, a power assembly and a heat exchanger, wherein the compressor assembly and the power assembly are connected, and the compressor assembly and the power assembly are respectively connected to the heat exchanger, and the heat exchanger is connected to the heat generating component, and the control method includes determining a demand state of the heat generating component according to a start instruction and an ambient temperature, wherein the demand state includes a heat dissipation demand state and a heating demand state of the heat generating component; and according to the demand state, controlling one of the compressor assembly and the power assembly to supply refrigerant to the heat exchanger.

[0024] In this way, by setting up a thermal management system in the energy storage device, and controlling one of the compressor assembly and the power assembly to supply refrigerant to the heat exchanger in contact with the heat element according to the demand state of the heat element and the ambient temperature, the refrigerant can directly exchange heat with the heat element. There is no need to design complex air ducts or water channels in the energy storage device, which reduces the cost of the energy storage device, the complexity of the pipelines and the occupied space, and is conducive to the miniaturization of the energy storage device.

[0025] In certain embodiments, according to the demand state, one of the compressor assembly and the power assembly is controlled to supply refrigerant to the heat exchanger in contact with the heat generating element, including controlling the compressor assembly to supply refrigerant to the heat exchanger when the heat generating element is in a heat dissipation demand state and a high temperature environment; and controlling the power assembly to supply refrigerant to the heat exchanger when the heat generating element is in a heat dissipation demand state and a low temperature environment.

[0026] In this way, when the heating element is in a high-temperature environment and needs to dissipate heat, a large amount of refrigerant is needed for heat dissipation, so that the refrigerant required for heat dissipation can be transferred to the heating element for heat dissipation through the compressor, thereby improving the heat dissipation efficiency; when the heating element is in a low-temperature environment and needs to dissipate heat, the low-temperature environment can take away part of the heat, and a large amount of refrigerant is not needed to participate in the heat dissipation, so that the refrigerant required for heat dissipation can be transferred to the heating element for heat dissipation through the power component, thereby reducing energy consumption.

[0027] In certain embodiments, the thermal management system includes an electric heating element, and according to the demand state, controls one of the compressor assembly and the power assembly to supply refrigerant to a heat exchanger in contact with the heating element, including controlling the power assembly to supply refrigerant to the heat exchanger and the electric heating element and controlling the electric heating element to heat the refrigerant when the heating element is in a heating demand state and a low temperature environment.

[0028] In this way, when the heating element is in a low-temperature environment and needs to be heated, the refrigerant is preheated by providing an electric heating element, so that the refrigerant can heat the heating element.

[0029] An embodiment of the present invention provides a computer-readable storage medium on which a computer program is stored. When the computer program is executed by a processor, the steps of any of the above-mentioned control methods for a thermal management system are implemented.

[0030] Additional aspects and advantages of the present invention will be given in part in the following description and in part will be obvious from the following description, or will be learned through practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] The above and / or additional aspects and advantages of the present invention will become apparent and easily understood from the description of the embodiments in conjunction with the following drawings, in which:

[0032] Figure 1 is a schematic diagram of the structure of an energy storage device according to some embodiments of the present invention;

[0033] Figure 2 is a schematic diagram of the refrigerant flow of a thermal management system in certain embodiments of the present invention;

[0034] Figure 3is another refrigerant flow schematic diagram of a thermal management system according to certain embodiments of the present invention;

[0035] Figure 4 is another schematic diagram of refrigerant flow in a thermal management system of certain embodiments of the present invention;

[0036] Figures 5 to 7 is a flow chart of a control method of a thermal management system according to certain embodiments of the present invention;

[0037] Figure 8 It is a schematic diagram of the connection status of a computer-readable storage medium and a processor according to some embodiments of the present invention.

[0038] Description of main component reference numerals:

[0039] 1000, energy storage device; 100, heating element; 110, energy storage power supply; 120, energy storage inverter; 200, thermal management system; 210, compressor assembly; 211, compressor; 212, oil separator; 213, exhaust check valve; 214, oil return pipe; 220, power assembly; 221, first valve; 222, second valve; 223, fluorine pump; 224, bypass valve; 225, stop valve; 230, electric heating element; 240, condenser; 250, liquid storage tank; 260, electronic expansion valve; 270, check valve; 280, three-way valve; 290, heat exchanger; 291, first heat exchanger; 292, second heat exchanger; 300, computer readable storage medium; 310, processor; 320, memory; 321, computer program. DETAILED DESCRIPTION

[0040] The embodiments of the present invention are described in detail below, examples of which are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and cannot be understood as limiting the present invention.

[0041] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying 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 limiting the present invention. In the description of the present invention, "multiple" means two or more, unless otherwise clearly and specifically defined.

[0042] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected" and "connected" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection. It can be a mechanical connection or an electrical connection. It can be directly connected or indirectly connected through an intermediate medium. It can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0043] In the present invention, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may include that the first and second features are in direct contact, or may include that the first and second features are not in direct contact but are in contact through another feature between them. Moreover, a first feature being "above", "above" and "above" a second feature includes that the first feature is directly above and obliquely above the second feature, or simply indicates that the first feature is higher in level than the second feature. A first feature being "below", "below" and "below" a second feature includes that the first feature is directly below and obliquely below the second feature, or simply indicates that the first feature is lower in level than the second feature.

[0044] The disclosure herein provides many different embodiments or examples for realizing different structures of the present invention. In order to simplify the disclosure of the present invention, the components and settings of specific examples are described herein. Of course, they are merely examples, and the purpose is not to limit the present invention. In addition, the present invention may repeat reference numbers and / or reference letters in different examples, and such repetition is for the purpose of simplification and clarity, and does not itself indicate the relationship between the various embodiments and / or settings discussed. In addition, the present invention provides various specific examples of processes and materials, but those of ordinary skill in the art may recognize the application of other processes and / or the use of other materials.

[0045] See also Figures 1 to 4 , a thermal management system 200 provided in an embodiment of the present invention is used for an energy storage device 1000. The energy storage device 1000 includes a heating element 100, and the thermal management system 200 includes a compressor assembly 210, a power assembly 220, and a heat exchanger 290. The compressor assembly 210 and the power assembly 220 are connected, and the compressor assembly 210 and the power assembly 220 are respectively connected to the heat exchanger 290, and the heat exchanger 290 is connected to the heating element 100. The thermal management system 200 is configured to control one of the compressor assembly 210 and the power assembly 220 to supply refrigerant to the heat exchanger 290 according to the demand state of the heating element 100 and the ambient temperature.

[0046] In this way, by setting up a thermal management system 200 in the energy storage device 1000, and according to the demand state of the heating element 100 and the ambient temperature, controlling one of the compressor assembly 210 and the power assembly 220 to supply refrigerant to the heat exchanger 290 in contact with the heating element 100, the refrigerant can directly exchange heat with the heating element 100, and there is no need to design complex air ducts or water channels in the energy storage device 1000, thereby reducing the cost, pipeline complexity and occupied space of the energy storage device 1000, which is conducive to the miniaturization of the energy storage device 1000.

[0047] The energy storage device 1000 may be a device that can store energy in the form of electrical energy and release it when needed to supply it to a power system or other equipment. For example, the energy storage device 1000 may be a charging pile, a charging station, or a charging container. This application takes the energy storage device 1000 as a charging pile as an example for explanation.

[0048] Specifically, the energy storage device 1000 includes a heating element 100, which can generate heat when working. The heating element 100 includes but is not limited to an energy storage power supply 110, an energy storage converter 120, etc. The heat exchanger 290 includes a first heat exchanger 291 and a second heat exchanger 292, the first heat exchanger 291 is connected to the energy storage power supply 110, and the second heat exchanger 292 is connected to the energy storage converter 120. The first heat exchanger 291 and the second heat exchanger 292 can be connected in series or the first heat exchanger 291 and the second heat exchanger 292 can be connected in parallel.

[0049] For example, when the energy storage power supply 110 is charged and discharged, the energy storage power supply 110 needs to be charged to 105%, so that the extra 5% of the power is dissipated in the form of heat; the energy storage inverter 120 is a device that can realize the conversion of AC and DC during the charging and discharging process of the energy storage power supply 110. When the energy storage inverter 120 is converted, the energy storage inverter 120 can convert 100% of the AC into 95% of the DC, so that the missing 5% is dissipated in the form of heat. When the energy storage power supply 110 and the energy storage inverter 120 are connected in series, since the energy storage inverter 120 can accept the refrigerant with a higher temperature for heat exchange, the energy storage power supply 110 and the energy storage inverter 120 are connected in series, so that the refrigerant can continue to be heat exchanged with the second heat exchanger 292 after the heat exchange of the first heat exchanger 291, so that the refrigerant can be fully converted into a gaseous refrigerant, and liquid refrigerant is prevented from entering the compressor 211 to cause liquid hammer. By connecting the first heat exchanger 291 and the second heat exchanger 292 in parallel, the energy storage power supply 110 and the energy storage converter 120 can be cooled at the same time, thereby improving the cooling efficiency.

[0050] The energy storage device 1000 is provided with a thermal management system 200, which can manage the heat of the heating element 100 according to the needs of the heating element 100 in the energy storage device 1000. The thermal management system 200 includes a compressor assembly 210 and a power assembly 220, and the compressor assembly 210 and the power assembly 220 can provide power to the thermal management system 200. For example, when the heating element 100 needs to dissipate heat, the compressor assembly 210 and the power assembly 220 can promote the refrigerant to circulate continuously in the thermal management system 200, thereby achieving a continuous heat dissipation effect.

[0051] In the thermal management system 200, the compressor assembly 210 and the power assembly 220 can be connected, and the compressor assembly 210 and the power assembly 220 can be respectively connected to the heat exchanger 290, so that the compressor assembly 210 and the power assembly 220 can respectively control the circulation flow of the refrigerant in the thermal management system 200, that is, when the compressor 211 controls the circulation of the refrigerant, the power assembly 220 is turned off; when the power assembly 220 controls the circulation of the refrigerant, the compressor assembly 210 is turned off.

[0052] According to the ambient temperature of the energy storage device 1000 and the demand state of the energy storage device 1000, one of the compressor assembly 210 and the power assembly 220 can be selected to control the circulation of the refrigerant in the thermal management system 200, so that the refrigerant can pass through the heat exchanger 290 in contact with the heating element 100, and perform heat exchange on the heating element 100 through the heat exchanger 290. Among them, the heat exchanger 290 can be a cold plate, an evaporator, etc. The heat exchanger 290 includes a first heat exchanger 291 and a second heat exchanger 292. The first heat exchanger 291 can be in contact with the energy storage power supply 110, and the second heat exchanger 292 can be in contact with the energy storage inverter 120. It should be noted that the contact between the heat exchanger 290 and the heating element 100 can be direct contact or indirect contact by setting a heat transfer layer such as thermal grease or thermal silica gel between the heat exchanger 290 and the heating element 100.

[0053] In certain embodiments, when the heat generating element 100 is in a state where heat dissipation is required and in a high temperature environment, the thermal management system 200 is configured to control the compressor assembly 210 to supply refrigerant to the heat exchanger 290; when the heat generating element 100 is in a state where heat dissipation is required and in a low temperature environment, the thermal management system 200 is configured to control the power assembly 220 to supply refrigerant to the heat exchanger 290.

[0054] In this way, when the heating element 100 is in a high-temperature environment and needs to dissipate heat, a large amount of refrigerant is needed for heat dissipation, so that the refrigerant required for heat dissipation can be transmitted to the heating element 100 for heat dissipation through the compressor 211, which can improve the heat dissipation efficiency; when the heating element 100 is in a low-temperature environment and needs to dissipate heat, the low-temperature environment can take away part of the heat, and a large amount of refrigerant is not needed to participate in the heat dissipation, so that the refrigerant required for heat dissipation can be transmitted to the heating element 100 for heat dissipation through the power component 220, which can reduce energy consumption.

[0055] Specifically, the demand state of the heating element 100 includes a heat dissipation demand state and a heating demand state. The heat dissipation demand state indicates that the heat generated by the heating element 100 is too high, affecting the energy storage of the energy storage component, so that the temperature of the heating element 100 needs to be reduced; the heating demand state indicates that the ambient temperature of the energy storage device 1000 is too low, and the efficiency of the energy storage of the heating element 100 is reduced, so that the temperature of the heating element 100 needs to be heated to improve the energy storage efficiency of the heating element 100.

[0056] When the heating element 100 is in a state of heat dissipation demand and a high temperature environment, the environment cannot take away the heat generated by the heating element 100. At this time, the compressor assembly 210 is started, the power assembly 220 is turned off, and the refrigerant in the thermal management system 200 is provided with flow power by the compressor assembly 210, so that the refrigerant flows to the heat exchanger 290 for heat exchange, and the refrigerant that has undergone heat exchange can flow directly back to the compressor assembly 210.

[0057] When the heating element 100 is in a state where heat dissipation is required and in a low-temperature environment, part of the heat generated by the heating element 100 can be taken away by the low-temperature environment, so a large amount of refrigerant is not needed to participate in the heat dissipation of the heating element 100. By turning off the compressor 211, the refrigerant in the thermal management system 200 can be powered by the power component 220 to flow to the heat exchanger 290 for heat exchange.

[0058] See also Figure 4 In some embodiments, the thermal management system 200 includes an electric heating element 230. When the heating element 100 is in a heating demand state and a low temperature environment, the thermal management system 200 is configured to control the power component 220 to supply refrigerant to the heat exchanger 290 and the electric heating element 230 and to control the electric heating element 230 to heat the refrigerant.

[0059] In this way, when the heating element 100 is in a low temperature environment and needs to be heated, the refrigerant is preheated by providing the electric heating element 230 , so that the refrigerant can heat the heating element 100 .

[0060] Specifically, the thermal management system 200 also includes an electric heating element 230, which can heat the refrigerant. The electric heating element 230 can be connected in series with the heat exchanger 290, so that the refrigerant needs to pass through the electric heating element 230 before flowing to the heat exchanger 290. When the heating element 100 is in a heating demand state and a low-temperature environment, the efficiency of charging and discharging of the heating element 100 is reduced due to the influence of the low-temperature environment, so it is necessary to increase the temperature of the heating element 100. At this time, the compressor assembly 210 is turned off, and the refrigerant in the thermal management system 200 is provided with flow power by the power assembly 220, so that the refrigerant flows to the electric heating element 230 for heating, and the refrigerant that absorbs heat continues to flow to the heat exchanger 290 to exchange heat with the heating element 100, thereby being able to heat the heating element 100.

[0061] See also Figure 2 , Figure 3 and Figure 4 In some embodiments, the thermal management system 200 includes a condenser 240, a liquid storage tank 250, a bypass valve 224, a stop valve 225 and an electronic expansion valve 260. The inlet of the condenser 240 is connected to the compressor assembly 210, and the outlet of the condenser 240 is connected to the inlet of the liquid storage tank 250. The liquid storage tank 250 includes a first outlet and a second outlet. The first outlet is connected to the electronic expansion valve 260 through the bypass valve and the power assembly 220 respectively, and the second outlet is connected to the electronic expansion valve 260 through the stop valve. The electronic expansion valve 260 is connected to the inlet of the heat exchanger 290, and the outlet of the heat exchanger 290 is connected to the compressor assembly 210 and the liquid storage tank 250 respectively.

[0062] In this way, by setting up the condenser 240, the liquid storage tank 250, the bypass valve 224, the stop valve 225 and the electronic expansion valve 260, the high-temperature and high-pressure refrigerant flowing out of the compressor 211 can be condensed by the condenser 240 into a high-pressure and low-temperature liquid refrigerant, and stored in the liquid storage tank 250, and the bypass valve 224 and the stop valve 225 can limit the flow direction of the refrigerant. Then, after the high-pressure and low-temperature liquid refrigerant is throttled by the electronic expansion valve 260, the formed low-temperature and low-pressure refrigerant can fully contact with the heating element 100 to dissipate heat, thereby improving the heat dissipation efficiency.

[0063] Specifically, the thermal management system 200 includes a condenser 240, a liquid storage tank 250, a bypass valve 224, a stop valve 225 and an electronic expansion valve 260. Among them, the condenser 240 can condense the refrigerant flowing through, so that the high-temperature gaseous refrigerant is condensed into a low-temperature liquid refrigerant; the liquid storage tank 250 can be used to store liquid refrigerant; the bypass valve 224 and the stop valve 225 can allow the refrigerant to flow through to prevent the refrigerant from entering the power assembly 220; the electronic expansion valve 260 can play a throttling role in the thermal management system 200, and is used to control the flow rate of the refrigerant flowing in the pipeline, so that by connecting the inlet of the liquid storage tank 250 to the outlet of the condenser 240, the liquid refrigerant condensed by the condenser 240 can enter the liquid storage tank 250 for storage, and the liquid storage tank 250 includes a first outlet and a second outlet, and the first outlet can be connected to the bypass valve 224 and the power assembly 220 respectively, so that the refrigerant in the liquid storage tank 250 can The refrigerant can flow to the bypass valve 224 and the power assembly 220, and the bypass valve 224 and the power assembly 220 can be connected to the electronic expansion valve 260, so that the refrigerant flowing out of the bypass valve 224 and the power assembly 220 flows into the inlet of the heat exchanger 290 after being throttled by the electronic expansion valve 260; the second outlet can be connected to the electronic expansion valve 260 through the stop valve 225, so that the refrigerant flowing out of the liquid storage tank 250 can enter the electronic expansion valve 260 after passing through the stop valve 225, and can flow into the inlet of the heat exchanger 290 after being throttled by the electronic expansion valve 260, and the outlet of the heat exchanger 290 is respectively connected to the compressor assembly 210 and the liquid storage tank 250, so that the refrigerant after heat exchange can flow to the compressor assembly 210 and the liquid storage tank 250 respectively.

[0064] See also Figure 2 In some embodiments, when the heating element 100 is in a state of heat dissipation demand and a high temperature environment, the compressor assembly 210 transports the refrigerant to the condenser 240 for heat exchange. The refrigerant that has undergone heat exchange passes through the liquid storage tank 250, the stop valve 225, the bypass valve 224 and the electronic expansion valve 260 and then enters the heat exchanger 290 for heat dissipation. The refrigerant that has undergone heat dissipation flows back to the compressor assembly 210.

[0065] In this way, the refrigerant after heat dissipation can absorb heat and change from liquid to gas, so that the gaseous refrigerant after heat dissipation can be controlled to flow back to the compressor 211, so that the refrigerant can be reused without causing liquid hammer to the compressor 211.

[0066] Specifically, when the heating element 100 is in a state of heat dissipation demand and a high-temperature environment, the temperature of the heating element 100 is relatively high and the high-temperature environment cannot dissipate heat for the heating element 100, so that the compressor assembly 210 can compress the refrigerant, so that the refrigerant becomes a high-temperature and high-pressure gaseous refrigerant, and transports it to the condenser 240 for heat exchange. The high-temperature and high-pressure gaseous refrigerant after heat exchange can be condensed into a high-pressure liquid refrigerant, and the high-pressure liquid refrigerant can be transported to the liquid storage tank 250 for partial storage. The excess high-pressure liquid refrigerant flows out from the first outlet and the second outlet of the liquid storage tank 250, and flows into the electronic expansion valve 260 after passing through the bypass valve 224 and the stop valve 225. After throttling of the electronic expansion valve 260, the high-pressure liquid refrigerant can become a low-pressure liquid refrigerant, so that the low-pressure liquid refrigerant can enter the heat exchanger 290 for heat dissipation, and the low-pressure liquid refrigerant that absorbs heat can become a low-pressure gaseous refrigerant and flow back to the compressor assembly 210 for compression, thereby forming a heat dissipation cycle.

[0067] See also Figure 3 In some embodiments, the power component 220 includes a first valve 221, a second valve 222 and a fluorine pump 223. The first outlet of the liquid storage tank 250 is connected to the fluorine pump 223 through the first valve 221. The fluorine pump 223 is connected to the heating element 100 through the second valve 222 and the electronic expansion valve 260. When the heating element 100 is in a state of heat dissipation demand and a low temperature environment, the compressor component 210, the bypass valve and the stop valve are closed, the first valve 221 and the second valve 222 are opened, and the fluorine pump 223 supplies the refrigerant in the liquid storage tank 250 to the heat exchanger 290 for heat dissipation.

[0068] In this way, by arranging the first valve 221 and the second valve 222 on both sides of the fluorine pump 223 respectively, the opening and closing of the fluorine pump 223 can be controlled by the first valve 221 and the second valve 222, thereby avoiding confusion between the compressor assembly 210 and the power assembly 220.

[0069] Specifically, the power assembly 220 includes a first valve 221, a second valve 222 and a fluorine pump 223. The first valve 221 and the second valve 222 are arranged at both ends of the fluorine pump 223, so that the first valve 221 and the second valve 222 can control the opening and closing of the fluorine pump 223. The first valve 221 and the second valve 222 can be square valves, and the first outlet of the liquid storage tank 250 can be connected to the first valve 221, so that the first valve 221 can control whether the refrigerant in the liquid storage tank 250 flows into the fluorine pump 223. The second valve 222 can be connected to the electronic expansion valve 260, so that the second valve 222 can control whether the refrigerant flowing out of the fluorine pump 223 flows to the electronic expansion valve 260, and the second valve 222 can also prevent the refrigerant flowing out of the second outlet of the liquid storage tank 250 from flowing back to the fluorine pump 223.

[0070] When the heating element 100 is in a state where heat dissipation is required and in a low-temperature environment, the low-temperature environment takes away part of the heat of the heating element 100, so that a large amount of refrigerant is not needed to participate in the heat dissipation. The compressor assembly 210, the bypass valve 224 and the stop valve 225 can be closed, and the first valve 221 and the second valve 222 are controlled to be opened. After the fluorine pump 223 receives the liquid refrigerant flowing out from the first outlet of the liquid storage tank 250, the fluorine pump 223 can supply the refrigerant in the liquid storage tank 250 to the heat exchanger 290 for heat dissipation.

[0071] See also Figure 3 and Figure 4 In some embodiments, the thermal management system 200 includes a one-way valve 270 and a three-way valve 280, the first end of the three-way valve 280 is connected to the heat exchanger 290 through the one-way valve 270, the second end of the three-way valve 280 is connected to the inlet of the condenser 240, and the third end of the three-way valve 280 is connected to the liquid storage tank 250; when the heating element 100 is in a heat dissipation demand state and a low temperature environment, the refrigerant heat exchanged by the heat exchanger 290 flows into the condenser 240 through the one-way valve 270 and the three-way valve 280, and the refrigerant after heat exchange in the condenser 240 flows into the liquid storage tank 250; when the heating element 100 is in a heating demand state and a low temperature environment, the refrigerant heat exchanged by the heat exchanger 290 flows into the liquid storage tank 250 through the one-way valve 270 and the three-way valve 280.

[0072] In this way, by setting the one-way valve 270 and the three-way valve 280, the flow direction of the refrigerant can be controlled, so that the refrigerant can be controlled to flow into the condenser 240 for heat exchange according to the different demand states of the heating element 100, without the participation of the compressor 211, which is conducive to improving the heat dissipation efficiency. Or according to the different demand states of the heating element 100, the refrigerant can be controlled to enter the liquid storage tank 250 after the heat exchange with the heating element 100, reducing the time for the refrigerant to absorb heat at the electric heating element 230, which is conducive to improving the heating efficiency.

[0073] The thermal management system 200 includes a one-way valve 270 and a three-way valve 280. The one-way valve 270 can control the refrigerant to flow in one direction and prohibit the refrigerant from flowing in the opposite direction; the three-way valve 280 includes three interfaces, which can connect three pipelines, and the refrigerant can flow into one of the flow paths and flow out from the other two flow paths.

[0074] Specifically, the first end of the three-way valve 280 can be connected to the heat exchanger 290 through the one-way valve 270, so that the refrigerant that has undergone heat exchange in the heat exchanger 290 can flow from the first end into the three-way valve 280 after passing through the one-way valve 270, and the refrigerant is prohibited from flowing back from the three-way valve 280 to the heat exchanger 290. The second end of the three-way valve 280 can be connected to the condenser 240, and the third end of the three-way valve 280 can be connected to the liquid storage tank 250, so that the refrigerant that enters the three-way valve 280 from the first end enters the condenser 240 for condensation when the second end is opened, and enters the liquid storage tank 250 for storage when the third end is opened.

[0075] When the heating element 100 is in a state where heat dissipation is required and the environment is low temperature, the refrigerant that has undergone heat exchange in the heat exchanger 290 flows into the condenser 240 for condensation after passing through the one-way valve 270 and the three-way valve 280. The refrigerant that has undergone condensation in the condenser 240 can flow into the liquid storage tank 250. When the heating element 100 is in a state where heating is required and the environment is low temperature, the refrigerant that has undergone heat exchange in the heat exchanger 290 flows into the liquid storage tank 250 for storage after passing through the one-way valve 270 and the three-way valve 280.

[0076] See also Figure 2 , Figure 3 and Figure 4 In some embodiments, the compressor assembly 210 includes a compressor 211, an oil-liquid separator 212, an exhaust check valve 213 and an oil return pipe 214. The outlet of the compressor 211 is connected to the inlet of the oil-liquid separator 212. The first outlet of the oil-liquid separator 212 is connected to the condenser 240 of the energy storage device 1000 through the exhaust check valve 213. The second outlet of the oil-liquid separator 212 is connected to the inlet of the compressor 211 through the oil return pipe 214.

[0077] Thus, the lubricating oil in the refrigerant can be recovered by providing the oil separator 212 and the oil return pipe 214. The exhaust check valve 213 can be provided to prevent the refrigerant from flowing back into the compressor 211 and causing damage to the compressor 211.

[0078] Specifically, the compressor assembly 210 includes a compressor 211, an oil-liquid separator 212, an exhaust check valve 213 and an oil return pipe 214. The compressor 211 can compress liquid refrigerant into a high-pressure and high-temperature gaseous refrigerant. Since the refrigerant is mixed with lubricating oil, the outlet of the compressor 211 is connected to the inlet of the oil-liquid separator 212, so that the oil-liquid separator 212 can separate the gaseous refrigerant and the lubricating oil, and the first outlet of the oil-liquid separator 212 is connected to the condenser 240 of the energy storage device 1000 through the exhaust check valve 213, so that the gaseous refrigerant can flow into the condenser 240 from the first outlet of the oil-liquid separator 212, and the second outlet of the oil-liquid separator 212 is connected to the oil return pipe 214, and the oil return pipe 214 can be connected to the inlet of the compressor 211, so that the lubricating oil can flow back to the compressor 211 for reuse.

[0079] See also Figure 5 A control method of a thermal management system 200 provided in an embodiment of the present invention is used for an energy storage device 1000. The energy storage device 1000 includes a heating element 100. The thermal management system 200 includes a compressor assembly 210, a power assembly 220, and a heat exchanger 290. The compressor assembly 210 and the power assembly 220 are connected. The compressor assembly 210 and the power assembly 220 are respectively connected to the heat exchanger 290. The heat exchanger 290 is connected to the heating element 100. The control method includes:

[0080] Step 011: determining the demand state of the heating element 100 according to the start-up instruction and the ambient temperature, the demand state including the heat dissipation demand state and the heating demand state of the heating element 100;

[0081] Step 012: According to the demand status, control one of the compressor assembly 210 and the power assembly 220 to supply refrigerant to the heat exchanger 290.

[0082] In this way, by setting up a thermal management system 200 in the energy storage device 1000, and according to the demand state of the heating element 100 and the ambient temperature, controlling one of the compressor assembly 210 and the power assembly 220 to supply refrigerant to the heat exchanger 290 in contact with the heating element 100, the refrigerant can directly exchange heat with the heating element 100, and there is no need to design complex air ducts or water channels in the energy storage device 1000, thereby reducing the cost, pipeline complexity and occupied space of the energy storage device 1000, which is conducive to the miniaturization of the energy storage device 1000.

[0083] The energy storage device 1000 includes a heating element 100, and the thermal management system 200 includes a compressor assembly 210 and a power assembly 220. The compressor assembly 210 and the power assembly 220 are connected in parallel, and the compressor assembly 210 and the power assembly 220 are respectively connected to the heating element 100. The energy storage device 1000 is provided with a control device for controlling the thermal management system 200, and the control device includes a processor 310, a memory 320, and a computer program 321. The computer program 321 is stored in the memory 320 and executed by the processor 310, and the computer program 321 includes instructions for executing the control method of the thermal management system 200.

[0084] Specifically, the processor 310 can determine the required state of the heating element 100 according to the start instruction and the ambient temperature. The start instruction can be pressing the power button and the start button of the energy storage device 1000 in the traditional push-button energy storage device 1000, can be turned on by saying "turn on the energy storage device 1000 for heat dissipation" or "start the energy storage device 1000 for heat dissipation" and other voice instructions in the smart energy storage device 1000, can be turned on remotely by clicking the corresponding button on the mobile phone APP, can be turned on by the ON button on the energy storage device 1000 equipped with a remote control, or can be automatically turned on when the ambient temperature detected by the temperature sensor in the energy storage device 1000 and the temperature of the heating element 100 reach a preset temperature threshold. A temperature sensor can be set on the energy storage device 1000, and the temperature of the environment where the energy storage device 1000 is located can be detected by the temperature sensor, and the ambient temperature data is transmitted to the processor 310. The demand state includes a heat dissipation demand state and a heating demand state of the heating element 100. The heat dissipation demand state of the heating element 100 refers to that the temperature of the heating element 100 in the energy storage device 1000 is too high. In order to avoid thermal runaway of the heating element 100, the heating element 100 needs to be cooled. The heating demand state of the heating element 100 refers to that the ambient temperature of the heating element 100 is too low, which affects the normal operation of the heating element 100, so that the heating element 100 needs to be heated so that the heating element 100 can reach a normal operating temperature.

[0085] The processor 310 can control one of the compressor assembly 210 and the power assembly 220 to supply refrigerant to the heat exchanger 290 in contact with the heating element 100 according to the demand state. For example, when the processor 310 determines that the heating element 100 needs a large amount of refrigerant for heat dissipation according to the demand state, the compressor assembly 210 can be controlled to supply refrigerant to the heat exchanger 290 in contact with the heating element 100; when the processor 310 determines that the heating element 100 needs a small amount of refrigerant for heat dissipation according to the demand state, the power assembly 220 can be controlled to supply refrigerant to the heat exchanger 290 in contact with the heating element 100.

[0086] See also Figure 6In some embodiments, step 012: according to the demand state, controlling one of the compressor assembly 210 and the power assembly 220 to supply refrigerant to the heat exchanger 290 in contact with the heating element 100 includes:

[0087] Step 0121: When the heat generating element 100 is in a heat dissipation demand state and a high temperature environment, the compressor assembly 210 is controlled to supply refrigerant to the heat exchanger 290;

[0088] Step 0122 : When the heat generating element 100 is in a state where heat dissipation is required and the environment is low temperature, the power assembly 220 is controlled to supply refrigerant to the heat exchanger 290 .

[0089] In this way, when the heating element 100 is in a high-temperature environment and needs to dissipate heat, a large amount of refrigerant is needed for heat dissipation, so that the refrigerant required for heat dissipation can be transmitted to the heating element 100 for heat dissipation through the compressor 211, which can improve the heat dissipation efficiency; when the heating element 100 is in a low-temperature environment and needs to dissipate heat, the low-temperature environment can take away part of the heat, and a large amount of refrigerant is not needed to participate in the heat dissipation, so that the refrigerant required for heat dissipation can be transmitted to the heating element 100 for heat dissipation through the power component 220, which can reduce energy consumption.

[0090] Specifically, when the heating element 100 is in a state where heat dissipation is required and in a high-temperature environment, the environment cannot take away the heat generated by the heating element 100. At this time, the processor 310 can control the compressor assembly 210 to start and control the power assembly 220 to shut down, so that the refrigerant in the thermal management system 200 can provide flow power through the compressor assembly 210, so that the refrigerant flows to the heat exchanger 290 for heat exchange, and the refrigerant that has undergone heat exchange can flow directly back to the compressor assembly 210.

[0091] When the heating element 100 is in a state where heat dissipation is required and in a low-temperature environment, part of the heat generated by the heating element 100 can be taken away by the low-temperature environment, so a large amount of refrigerant is not needed to participate in the heat dissipation of the heating element 100, so that the processor 310 can turn off the compressor 211 and turn on the power component 220, so that the refrigerant in the thermal management system 200 can provide flow power through the power component 220, so that it flows to the heat exchanger 290 for heat exchange, and the refrigerant that has undergone heat exchange can flow back to the condenser 240 and then enter the liquid storage tank 250 for condensation, without having to flow back to the compressor component 210.

[0092] See also Figure 7 In some embodiments, the thermal management system 200 includes an electric heating element 230. Step 012: According to the demand state, controlling one of the compressor assembly 210 and the power assembly 220 to supply refrigerant to the heat exchanger 290 in contact with the heating element 100 includes:

[0093] Step 0123: When the heating element 100 is in a heating demand state and a low temperature environment, the power assembly 220 is controlled to supply refrigerant to the heat exchanger 290 and the electric heating element 230 and the electric heating element 230 is controlled to heat the refrigerant.

[0094] In this way, when the heating element 100 is in a low temperature environment and needs to be heated, the refrigerant is preheated by providing the electric heating element 230 , so that the refrigerant can heat the heating element 100 .

[0095] Specifically, the thermal management system 200 also includes an electric heating element 230, which can heat the refrigerant. When the heating element 100 is in a state of heating demand and a low-temperature environment, the efficiency of charging and discharging of the heating element 100 is reduced due to the influence of the low-temperature environment, so it is necessary to increase the temperature of the heating element 100. At this time, the processor 310 can control the compressor assembly 210 to shut down, and the refrigerant in the thermal management system 200 can provide flow power through the power assembly 220, so that the refrigerant flows to the electric heating element 230 for heating, and the refrigerant that absorbs heat continues to flow to the heat exchanger 290 to exchange heat with the heating element 100, thereby heating the heating element 100.

[0096] See also Figure 8 The embodiment of the present invention further provides a computer-readable storage medium 300 on which a computer program 321 is stored. When the computer program 321 is executed by the processor 310, the steps of the control method described in any of the above embodiments are implemented. For the sake of brevity, they are not repeated here.

[0097] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "illustrative embodiments", "examples", "specific examples", or "some examples" means that the specific features, structures, materials, or characteristics described in conjunction with the embodiments or examples are included in at least one embodiment or example of the present invention. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials, or characteristics described may be combined in any one or more embodiments or examples in a suitable manner.

[0098] Any process or method description in a flowchart or otherwise described herein may be understood to represent a module, segment or portion of code that includes one or more executable instructions for implementing the steps of a specific logical function or process, and the scope of the preferred embodiments of the present invention includes alternative implementations in which functions may not be performed in the order shown or discussed, including performing functions in a substantially simultaneous manner or in the reverse order depending on the functions involved, which should be understood by those skilled in the art to which the embodiments of the present invention belong.

[0099] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the claims and their equivalents.

Claims

1. A thermal management system for energy storage equipment, characterized in that: The energy storage device includes a heat generating component, and the thermal management system includes a compressor assembly, a power assembly and a heat exchanger, wherein the compressor assembly and the power assembly are connected, and the compressor assembly and the power assembly are respectively connected to the heat exchanger, and the heat exchanger is connected to the heat generating component. The thermal management system is configured to control one of the compressor assembly and the power assembly to supply refrigerant to the heat exchanger according to the demand state of the heat generating component and the ambient temperature.

2. The thermal management system according to claim 1, characterized in that: When the heat generating element is in a heat dissipation demand state and a high temperature environment, the thermal management system is configured to control the compressor assembly to supply refrigerant to the heat exchanger; When the heat generating component is in a state requiring heat dissipation and in a low temperature environment, the thermal management system is configured to control the power component to supply refrigerant to the heat exchanger.

3. The thermal management system according to claim 1, characterized in that: The thermal management system includes an electric heating element. When the heating element is in a heating demand state and a low temperature environment, the thermal management system is configured to control the power component to supply refrigerant to the heat exchanger and the electric heating element and to control the electric heating element to heat the refrigerant.

4. The thermal management system according to claim 1, characterized in that: The thermal management system includes a condenser, a liquid storage tank, a bypass valve, a stop valve and an electronic expansion valve. The inlet of the condenser is connected to the compressor assembly, and the outlet of the condenser is connected to the inlet of the liquid storage tank. The liquid storage tank includes a first outlet and a second outlet. The first outlet is connected to the electronic expansion valve through the bypass valve and the power assembly respectively, and the second outlet is connected to the electronic expansion valve through the stop valve. The electronic expansion valve is connected to the inlet of the heat exchanger, and the outlet of the heat exchanger is respectively connected to the compressor assembly and the liquid storage tank.

5. The thermal management system according to claim 4, characterized in that: When the heat generating component is in a state of heat dissipation demand and a high temperature environment, the compressor assembly transports the refrigerant to the condenser for heat exchange. The refrigerant after heat exchange passes through the liquid storage tank, the bypass valve, the stop valve and the electronic expansion valve and then enters the heat exchanger for heat dissipation. The refrigerant after heat dissipation flows back to the compressor assembly.

6. The thermal management system according to claim 4, characterized in that: The power component includes a first valve, a second valve and a fluorine pump. The first outlet of the liquid storage tank is connected to the fluorine pump through the first valve, and the fluorine pump is connected to the heating element through the second valve and the electronic expansion valve. When the heating element is in a state of heat dissipation demand and a low-temperature environment, the compressor component, the bypass valve and the stop valve are closed, and the first valve and the second valve are opened, and the fluorine pump supplies the refrigerant in the liquid storage tank to the heat exchanger for heat dissipation.

7. The thermal management system according to claim 6, characterized in that: The thermal management system comprises a one-way valve and a three-way valve, wherein a first end of the three-way valve is connected to the heat exchanger through the one-way valve, a second end of the three-way valve is connected to the inlet of the condenser, and a third end of the three-way valve is connected to the liquid storage tank; When the heating element is in a state of heat dissipation requirement and a low temperature environment, the refrigerant after heat exchange in the heat exchanger flows into the condenser through the one-way valve and the three-way valve, and the refrigerant after heat exchange in the condenser flows into the liquid storage tank; When the heating element is in a heating demand state and a low temperature environment, the refrigerant that has undergone heat exchange in the heat exchanger flows into the liquid storage tank through the one-way valve and the three-way valve.

8. The thermal management system according to claim 1, characterized in that: The heating element includes an energy storage power supply and an energy storage inverter, the energy storage power supply and the energy storage inverter are connected in series, the heat exchanger includes a first heat exchanger and a second heat exchanger, the first heat exchanger is connected to the energy storage power supply, the second heat exchanger is connected to the energy storage inverter, the first heat exchanger and the second heat exchanger are connected in series or the first heat exchanger and the second heat exchanger are connected in parallel.

9. The thermal management system according to claim 1, characterized in that: The compressor assembly includes a compressor, an oil-liquid separator, an exhaust one-way valve and an oil return pipe. The compressor outlet is connected to the inlet of the oil-liquid separator. The first outlet of the oil-liquid separator is connected to the condenser of the energy storage device through the exhaust one-way valve. The second outlet of the oil-liquid separator is connected to the inlet of the compressor through the oil return pipe.

10. An energy storage device, characterized in that: A thermal management system comprising any one of claims 1-9.

11. A control method for a thermal management system, used for an energy storage device, characterized in that: The energy storage device includes a heating element, the thermal management system includes a compressor assembly, a power assembly and a heat exchanger, the compressor assembly is connected to the power assembly, the compressor assembly and the power assembly are respectively connected to the heat exchanger, the heat exchanger is connected to the heating element, and the control method includes: Determining the demand state of the heating element according to the start-up instruction and the ambient temperature, wherein the demand state includes the heat dissipation demand state and the heating demand state of the heating element; According to the demand state, one of the compressor assembly and the power assembly is controlled to supply refrigerant to the heat exchanger.

12. The control method according to claim 11, characterized in that: According to the demand state, controlling one of the compressor assembly and the power assembly to supply refrigerant to the heat exchanger in contact with the heat generating element comprises: When the heat generating element is in a heat dissipation demand state and a high temperature environment, controlling the compressor assembly to supply refrigerant to the heat exchanger; When the heat generating element is in a state where heat dissipation is required and in a low temperature environment, the power assembly is controlled to supply refrigerant to the heat exchanger.

13. The control method according to claim 11, characterized in that: The thermal management system includes an electric heating element, and according to the demand state, controlling one of the compressor assembly and the power assembly to supply refrigerant to a heat exchanger in contact with the heating element includes: When the heating element is in a heating demand state and a low temperature environment, the power assembly is controlled to supply refrigerant to the heat exchanger and the electric heating element, and the electric heating element is controlled to heat the refrigerant.

14. A computer-readable storage medium having a computer program stored thereon, characterized in that: When the computer program is executed by a processor, the steps of the control method of the thermal management system according to any one of claims 11 to 13 are implemented.

Images