Double-circulation loop energy storage heat management system

Abstract

The utility model discloses a double circulation loop energy storage heat management system, an energy storage device comprises a first heat transfer component and a second heat transfer component, the heat management system comprises a dry cooler, a refrigeration module with a heat exchanger, a first communicating pipeline and a second communicating pipeline, and a first circulation loop is formed among a liquid outlet of the first heat transfer component, the dry cooler and a liquid supply port of the first heat transfer component; a second circulation loop is formed among the liquid outlet of the second heat transfer component, the heat exchanger and the liquid supply port of the second heat transfer component; the first communicating pipeline is connected between the pipeline in front of the liquid supply port of the second heat transfer component and the pipeline in front of the liquid supply port of the first heat transfer component; the second communicating pipeline is arranged at the upstream of the first communicating pipeline and is connected between the first circulating loop and the second circulating loop; under the high temperature condition, the first communicating pipeline and the second communicating pipeline are both opened, the refrigerant flows from the second circulating loop to the first circulating loop along the second communicating pipeline, the refrigerant in the first circulating loop can be cooled, and the condensation phenomenon is avoided.

Description

Technical Field

[0001] This utility model relates to a dual-loop energy storage thermal management system. Background Technology

[0002] In existing technologies, some energy storage liquid cooling systems are equipped with inverter cooling circuits and battery cooling circuits. The inverter cooling circuit has an inverter cooling device for cooling the energy storage inverter, and the battery cooling circuit has a battery cooling device for cooling the battery. In the inverter cooling circuit, a cooling fan is used to cool the refrigerant before it is introduced into the inverter cooling device. In the battery cooling circuit, a heat exchanger is used to cool the refrigerant before it is introduced into the battery cooling device. When the ambient temperature is high, the cooling fan alone cannot meet the cooling requirements of the refrigerant. Some thermal management systems will also introduce the refrigerant from the inverter cooling circuit into the heat exchanger for cooling before it is introduced into the inverter cooling device. However, the refrigerant temperature introduced into the inverter cooling device in this way is too low, which will cause condensation. Condensation water is very likely to form at the liquid cooling pipeline, and once the condensate water flows into the energy storage inverter, it will cause inverter failure. Summary of the Invention

[0003] The purpose of this invention is to provide a new dual-loop energy storage thermal management system.

[0004] To achieve the above objectives, the technical solution adopted by this utility model is as follows: a dual-loop energy storage thermal management system. The energy storage device is equipped with a first heat transfer component for exchanging heat with the energy storage converter and a second heat transfer component for exchanging heat with the battery. The energy storage thermal management system includes a dry cooler and a refrigeration module. The first liquid outlet of the first heat transfer component, the dry cooler, and the first liquid supply port of the first heat transfer component are sequentially connected by pipelines and together with the first heat transfer component form a first circulation loop in which the refrigerant can circulate. A first circulation pump is provided in the first circulation loop. The refrigeration module includes a heat exchanger for cooling the refrigerant. The second liquid outlet of the second heat transfer component, the heat exchanger, and the second liquid supply port of the second heat transfer component are sequentially connected by pipelines and together with the second heat transfer component form a second circulation loop in which the refrigerant can circulate. A second circulation pump is provided in the second circulation loop.

[0005] The energy storage thermal management system further includes a first connecting pipe and a second connecting pipe. The first connecting pipe has a first port and a second port located at opposite ends. The first port is connected to the pipe between the heat exchanger and the second liquid supply port of the second heat transfer component, and the second port is connected to the pipe between the dry cooler and the first liquid supply port of the first heat transfer component. The first connecting pipe is configured to allow the refrigerant to flow from the first port to the second port. The second connecting pipe has a third port and a fourth port located at opposite ends. The third port is connected to the pipe in the second circulation loop and is located upstream of the first port along the direction of refrigerant flow to the second heat transfer component. The fourth port is connected to the pipe between the dry cooler and the second port. A control valve for controlling the opening and closing of the pipe is provided on either the first or second connecting pipe.

[0006] In some embodiments, the energy storage thermal management system has a first mode and a second mode. In the first mode, the refrigeration module is in the on state, both the first and second circulation pumps are on, and the control valve is in the closed state. In the second mode, the refrigeration module is in the on state, both the first and second circulation pumps are on, the control valve is in the open state, and the refrigerant flows from the first port to the second port and from the fourth port to the third port.

[0007] In some embodiments, the energy storage thermal management system is provided with a three-way valve. The first port of the three-way valve is connected to the second liquid outlet of the second heat transfer component via a pipeline, the second port of the three-way valve is connected to the heat exchanger via a pipeline, and the third port of the three-way valve is connected to the pipeline between the first liquid outlet of the first heat transfer component and the dry cooler via a pipeline. In the first mode and the second mode, the first port and the second port are connected. The energy storage thermal management system also has a third mode in which the refrigeration module is in a closed state, the first port and the third port are connected, and the control valve is in a closed state.

[0008] In some embodiments, the energy storage thermal management system has a fourth mode, in which the first interface is connected to the second interface, the refrigeration module is in a closed state, and the control valve is in a closed state.

[0009] In some embodiments, a heater is provided in the pipeline of the second circulation loop. The heater is located on the pipeline between the heat exchanger and the second liquid supply port of the second heat transfer component. In the first mode and the second mode, the heater is turned off. The energy storage thermal management system has a heating mode. In the heating mode, the refrigeration module is in a closed state and the heater is turned on.

[0010] In some embodiments, the third port is connected to the pipeline between the second liquid outlet of the second heat transfer component and the heat exchanger; or, the third port is connected to the pipeline between the heat exchanger and the first port.

[0011] In some embodiments, the first circulating pump is disposed on the pipeline between the fourth port and the second port, the second circulating pump is disposed on the pipeline between the third port and the first port, and the energy storage thermal management system includes an expansion tank, which is connected to the pipeline between the fourth port and the first circulating pump via a pipeline; or, the expansion tank is connected to the pipeline between the third port and the second circulating pump via a pipeline.

[0012] In some embodiments, the energy storage thermal management system includes a controller and a pressure sensor. The pressure sensor is located at the inlet of the first circulating pump or at the inlet of the second circulating pump. The pressure sensor is signal-connected to the controller, and the controller is signal-connected to the expansion tank. The energy storage thermal management system includes a refrigerant replenishment device. The refrigerant replenishment device includes a refrigerant replenishment pipeline. The refrigerant replenishment pipeline is provided with a one-way valve to prevent refrigerant backflow. The refrigerant replenishment pipeline is connected to the pipeline between the third port and the second circulating pump, or the refrigerant replenishment pipeline is connected to the pipeline between the fourth port and the first circulating pump.

[0013] In some embodiments, the refrigeration module further includes a compressor, a condenser, and an electronic expansion valve. The heat exchanger has a first fluid passage and a second fluid passage capable of heat exchange. The compressor outlet, condenser, electronic expansion valve, first fluid passage, and compressor inlet are sequentially connected by pipelines to form a refrigeration loop in which refrigerant can circulate. The second liquid outlet, second fluid passage, and second liquid supply port of the second heat transfer component are sequentially connected by pipelines to form the second circulation loop. The dry cooler and the condenser share the same set of cooling fans.

[0014] In some embodiments, the energy storage thermal management system has a fifth mode, in which the refrigeration module is in a closed state and the cooling fan of the dry cooler is turned off.

[0015] Due to the application of the above technical solution, this utility model has the following advantages compared with the prior art: The energy storage thermal management system of this utility model has a control valve closed under normal temperature conditions, and the first circulation loop and the second circulation loop operate independently. When the ambient temperature is too high, the control valve can be opened, and the first circulation loop and the second circulation loop can be connected to each other through the first connecting pipe and the second connecting pipe. Before the refrigerant is introduced into the first heat transfer component, the refrigerant in the second circulation loop can flow into the first circulation loop through the first connecting pipe and mix with the refrigerant in the first circulation loop. This not only cools the refrigerant in the first circulation loop a second time, but also, compared with directly introducing the refrigerant in the second circulation loop into the heat exchanger for cooling, this method will not make the temperature of the refrigerant introduced into the first heat transfer component too low, avoid condensation, and can regulate the energy storage converter to a suitable operating temperature. Attached Figure Description

[0016] Appendix Figure 1 This is a schematic diagram of a dual-loop energy storage thermal management system according to a specific embodiment of the present invention;

[0017] Appendix Figure 2 This is a schematic diagram of the energy storage thermal management system in the first mode of this embodiment;

[0018] Appendix Figure 3 This is a schematic diagram of the energy storage thermal management system in the second mode of this embodiment;

[0019] Appendix Figure 4 This is a schematic diagram of the energy storage thermal management system in the third mode of this embodiment;

[0020] Wherein: 10a, first liquid outlet; 10b, second liquid outlet; 20a, first liquid supply port; 20b, second liquid supply port; 110, dry cooler; 121, first circulating pump; 122, second circulating pump; 130, three-way valve; 140, heater; 150, expansion tank; 160, liquid replenishment device; 161, liquid replenishment pipeline; 162, one-way valve; 163, liquid replenishment tank; 164, liquid replenishment pump; 210, compressor; 220, condenser; 221, cooling fan; 230, electronic expansion valve; 240, heat exchanger; 241, first fluid passage; 242, second fluid passage; 310, first connecting pipeline; 320, second connecting pipeline; 330, control valve. Detailed Implementation

[0021] The technical solution of this utility model will be described in detail below with reference to the accompanying drawings and specific embodiments, so that the advantages and features of this utility model can be more easily understood by those skilled in the art. Obviously, the embodiments described in this application are only a part of the embodiments, not all of them. All other embodiments obtained by those skilled in the art based on the embodiments in this application without creative effort are within the scope of protection of this application.

[0022] The energy storage device includes a first heat transfer component for exchanging heat with the energy storage converter, a second heat transfer component for exchanging heat with the battery, and the energy storage device also includes, for example, Figure 1 The diagram illustrates a dual-loop energy storage thermal management system. The thermal management system includes a dry cooler 110 and a refrigeration module. The first liquid outlet 10a of the first heat transfer component, the dry cooler 110, and the first liquid supply port 20a of the first heat transfer component are sequentially connected via pipelines, forming a first circulation loop in which refrigerant can circulate. A first circulation pump 121 is provided in the first circulation loop. The refrigeration module includes a heat exchanger 240 for cooling the refrigerant. The second liquid outlet 10b of the second heat transfer component, the heat exchanger 240, and the second liquid supply port 20b of the second heat transfer component are sequentially connected via pipelines, forming a second circulation loop in which refrigerant can circulate. A second circulation pump 122 is provided in the second circulation loop.

[0023] The energy storage thermal management system also includes a first connecting pipe 310 and a second connecting pipe 320. The first connecting pipe 310 has a first port and a second port located at opposite ends. The first port connects the pipe between the heat exchanger 240 and the second liquid supply port 20b of the second heat transfer component, and the second port connects the pipe between the dry cooler 110 and the first liquid supply port 20a of the first heat transfer component. The second connecting pipe 320 has a third port and a fourth port located at opposite ends. The third port connects to the pipe in the second circulation loop and is located upstream of the first port in the direction of refrigerant flow to the second heat transfer component. The fourth port connects to the pipe in the first circulation loop and is located upstream of the second port in the direction of refrigerant flow to the first heat transfer component. A control valve 330 for controlling the opening and closing of the pipe and the degree of pipe opening is provided on either the first connecting pipe 310 or the second connecting pipe 320.

[0024] In this embodiment, the refrigeration module further includes a compressor 210, a condenser 220, and an electronic expansion valve 230. The heat exchanger 240 has a first fluid passage 241 and a second fluid passage 242 capable of heat exchange. The outlet of the compressor 210, the condenser 220, the electronic expansion valve 230, the first fluid passage 241, and the inlet of the compressor 210 are sequentially connected by pipelines to form a refrigeration circuit in which the refrigerant can circulate. The second liquid outlet 10b, the second fluid passage 242, and the second liquid supply port 20b of the second heat transfer component are sequentially connected by pipelines to form a second circulation circuit.

[0025] In this embodiment, the energy storage thermal management system has a first mode and a second mode. The first mode is activated at room temperature. In this mode, the cooling module is on, both the first circulation pump 121 and the second circulation pump 122 are on, and the control valve 330 is closed. Specifically, see [link to documentation]. Figure 2 As shown, in the first mode, compressor 210, first circulation pump 121, and second circulation pump 122 are all turned on, and the first connecting pipe 310 or the second connecting pipe 320 is closed. The refrigerant circulates in the refrigeration circuit. The first circulation circuit and the second circulation circuit operate independently. The refrigerant in the first circulation circuit is cooled by the dry cooler 110 and used to cool the energy storage converter. The refrigerant in the second circulation circuit is cooled by the refrigeration module in the heat exchanger 240 and is used to cool the battery.

[0026] In high-temperature environments, the energy storage thermal management system activates its second mode. In this mode, the cooling module is on, both the first circulation pump 121 and the second circulation pump 122 are activated, and the control valve 330 is open. For details, see [link to relevant documentation]. Figure 3 As shown, in the second mode, compressor 210, first circulation pump 121, and second circulation pump 122 are all turned on, and first connecting pipe 310 and second connecting pipe 320 are both open. The first circulation loop and the second circulation loop are interconnected through the first connecting pipe 310 and the second connecting pipe 320. The refrigerant in the first circulation loop can flow from the fourth port to the third port, and the refrigerant in the second circulation loop can also flow from the first port to the second port. Thus, before the refrigerant flows into the first heat transfer component, the low-temperature refrigerant in the first circulation loop, after being cooled by heat exchanger 240, can flow into the first circulation loop. Therefore, after being cooled by dry cooler 110, the refrigerant in the first circulation loop receives a second cooling, ensuring that the refrigerant entering the first heat transfer component meets the liquid supply temperature requirements under high-temperature conditions.

[0027] In the first mode, by closing either the first connecting pipe 310 or the second connecting pipe 320, even if the other pipe is connected to both the first and second circulation loops while both are operating normally, no refrigerant will flow into that pipe due to pressure balance at both ends, and the refrigerants in the first and second circulation loops will not mix. In the second mode, both the first connecting pipe 310 and the second connecting pipe 320 are opened, forming a new loop within both the first and second circulation loops. Refrigerant can flow within both pipes, achieving not only mixing of the refrigerant in the first and second circulation loops but also maintaining a stable total amount of refrigerant in both loops.

[0028] In this embodiment, under high-temperature conditions, the heat exchange efficiency between the refrigerant and the cooling medium in the heat exchanger 240 can be improved by increasing the power of the refrigeration module. This allows the cooling medium to achieve better cooling in the heat exchanger 240, ensuring that the battery also receives better cooling even under high-temperature conditions. In this embodiment, the cooling medium is driven to flow unidirectionally within the first connecting pipe 310 by controlling the rotation speeds of the first circulating pump 121 and the second circulating pump 122. In other embodiments, unidirectional flow of the cooling medium can be achieved by using existing methods such as a one-way valve.

[0029] In this embodiment, the dry cooler 110 and the condenser 220 share the same cooling fan 221, which can effectively save system setup. In this embodiment, the fourth port is connected to the pipeline between the dry cooler 110 and the first liquid supply port 20a of the first heat transfer component. The refrigerant cooled by the dry cooler 110 flows into the second circulation loop through the second connecting pipeline 320, reducing the impact on the temperature of the refrigerant in the second circulation loop and improving the energy efficiency of the thermal management system.

[0030] In this embodiment, the third port is connected to the pipeline between the second fluid passage 242 and the first port. In some embodiments, the third port is connected to the pipeline between the second liquid outlet 10b of the second heat transfer component and the second fluid passage 242. In this way, after the refrigerant in the first circulation loop flows into the second circulation loop from the second connecting pipeline 320, it will be cooled by the heat exchanger 240 and will not affect the temperature of the refrigerant that is finally introduced into the second heat transfer component.

[0031] In this embodiment, the energy storage thermal management system is equipped with a three-way valve 130. The first port a of the three-way valve 130 is connected to the second liquid outlet 10b of the second heat transfer component via a pipeline. The second port b of the three-way valve 130 is connected to the second fluid passage 242 via a pipeline. The third port c of the three-way valve 130 is connected to the pipeline between the first liquid outlet 10a of the first heat transfer component and the dry cooler 110 via a pipeline. In the first mode and the second mode, the first port a and the second port b are connected.

[0032] In this embodiment, the energy storage thermal management system also has a third mode, which can be activated in low-temperature environments. See [link to documentation]. Figure 4 As shown, in this mode, due to the low ambient temperature, there is no need to use the refrigeration module to cool the refrigerant flowing into the second heat transfer component. Therefore, in the third mode, the compressor 210 is off, the refrigeration module is in the off state, and the first port a and the third port c of the three-way valve 130 are connected, while one of the first connecting pipe 310 and the second connecting pipe 320 is closed. In the third mode, the refrigerant discharged from the second liquid outlet 10b of the second heat transfer component no longer flows to the heat exchanger 240. Instead, after passing through the three-way valve 130, it mixes with the refrigerant discharged from the first heat transfer component and then flows together into the dry cooler 110, where it is cooled. Afterward, the refrigerant is split at the fourth port or the second port, so that part of the refrigerant flows to the first liquid supply port 20a of the first heat transfer component, and the other part flows to the second liquid supply port 20b of the second heat transfer component.

[0033] In this embodiment, a control valve 330 is provided on the first connecting pipe 310. In the first mode, the first connecting pipe 310 is closed, and the first port a and the second port b of the three-way valve 130 are connected. The first circulation loop and the second circulation loop operate independently. Although the second connecting pipe 320 is in the open state in the thermal management system, there is no pressure difference between the third port and the fourth port when the first circulation loop and the second circulation loop are operating, and no refrigerant flows into the second connecting pipe 320. In the second mode, the control valve 330 is opened, and the first connecting pipe 310 is also switched to the open state. The temperature of the refrigerant flowing into the first heat transfer component can be adjusted by controlling the opening degree of the control valve 330. In this embodiment, in the third mode, the control valve 330 is closed, and the refrigerant is diverted at the fourth port after being cooled by the dry cooler 110.

[0034] In other embodiments, the control valve 330 is disposed on the second connecting pipe 320, and its working principle is similar to that of the control valve 330 disposed on the first connecting pipe 310, which will not be described in detail here. In this embodiment, the control valve 330 is an electric ball valve. In other embodiments, the control valve 330 may be other valve bodies capable of controlling the opening and closing of the pipe.

[0035] In this embodiment, the energy storage thermal management system has a fourth mode. In the fourth mode, the first interface a and the second interface b are connected, the compressor 210 is turned off, the refrigeration module is in a turned-off state, and one of the first connecting pipes 310 or the second connecting pipe 320 is closed. Specifically, in the fourth mode, the control valve 330 is closed. When the battery side temperature is low and no cooling treatment is required, the fourth mode is activated. In this mode, the first circulation loop and the second circulation loop operate independently, and since the compressor 210 is in a turned-off state, the refrigeration module does not work, and therefore does not cool the refrigerant in the second circulation loop. At the same time, in this mode, the dry cooler 110 works normally, and the first circulation loop operates normally, thereby cooling the energy storage converter.

[0036] In this embodiment, the energy storage thermal management system has a heating mode. A heater 140 is provided on the pipeline of the second circulation loop. Specifically, the heater 140 is located on the pipeline between the second fluid passage 242 and the second liquid supply port 20b of the second heat transfer component. In the first, second, third, and fourth modes, the heater 140 is in the off state. When the battery side temperature is lower than the normal operating temperature, the heating mode is turned on. In this mode, the compressor 210 is turned off, the refrigeration module stops working, and the heater 140 is turned on to heat the refrigerant introduced into the second heat transfer component.

[0037] In this embodiment, the first circulation pump 121 is installed on the pipeline between the fourth port and the second port, and the second circulation pump 122 is installed on the pipeline between the third port and the first port. The energy storage thermal management system includes an expansion tank 150, which is connected to the pipeline between the third port and the second circulation pump 122 via a pipeline, or the expansion tank 150 is connected to the pipeline between the fourth port and the first circulation pump 121 via a pipeline. Since the second connecting pipeline 320 connects the first circulation loop and the second circulation loop, specifically, the second connecting pipeline 320 connects the pipeline at the inlet of the first circulation pump 121 and the inlet of the second circulation pump 122, only one expansion tank 150 needs to be installed in the first circulation loop or the second circulation loop to balance the pressure in the first circulation loop and the second circulation loop.

[0038] In this embodiment, the energy storage thermal management system includes a controller and a pressure sensor. The pressure sensor is located at the inlet of the second circulation pump 122 or at the inlet of the first circulation pump 121. The pressure sensor is signal-connected to the controller, and the controller is signal-connected to the expansion tank 150. Since the second connecting pipe 320 connects the first and second circulation loops, only one of the two locations—the inlet of the first circulation pump 121 or the inlet of the second circulation pump 122—needs to be equipped with a pressure sensor. The controller uses the pressure data detected by the pressure sensor to control the expansion tank 150 to regulate the pressure.

[0039] In this embodiment, the energy storage thermal management system includes a refrigerant replenishment device 160. The refrigerant replenishment device 160 is connected to the pipeline at the inlet of the first circulation pump 121 via a refrigerant replenishment pipeline 161, or the refrigerant replenishment pipeline 161 is connected to the pipeline at the inlet of the second circulation pump 122. Specifically, see... Figure 1 As shown, in this embodiment, the liquid replenishment device 160 is connected to the pipeline at the inlet of the second circulation pump 122 through the liquid replenishment pipeline 161. The liquid replenishment device 160 can replenish the refrigerant in the first circulation loop and the second circulation loop in a timely manner.

[0040] In this embodiment, the replenishment pipeline 161 is equipped with a one-way valve 162 to prevent refrigerant backflow. Specifically, the one-way valve 162 only allows refrigerant to flow unidirectionally to the second circulation pump 122. In this embodiment, the replenishment device 160 also includes a replenishment water tank 163 for storing refrigerant, and a replenishment pump 164 is provided on the replenishment pipeline 161 to drive the refrigerant from the replenishment water tank 163 to the first circulation loop or the second circulation loop.

[0041] In this embodiment, the energy storage thermal management system also has a fifth mode. When neither the battery side nor the energy storage converter side needs cooling, the fifth mode is activated, the compressor 210 is turned off, the refrigeration module is turned off, the cooling fan 221 is turned off, and the first circulation pump 121 and the second circulation pump 122 can continue to work, so that the refrigerant flows in the first circulation loop and the second circulation loop, ensuring that the temperature of the battery side and the energy storage converter side is uniform.

[0042] In summary, the energy storage thermal management system of this embodiment can activate a first mode under normal temperature conditions, in which the first and second circulation loops operate independently. When the ambient temperature is too high, a second mode can be activated. In this mode, the first and second circulation loops are interconnected through the first connecting pipe 310 and the second connecting pipe 320. Before the refrigerant is introduced into the first heat transfer component, the refrigerant in the second circulation loop can flow into the first circulation loop through the first connecting pipe 310 and mix with the refrigerant in the first circulation loop. This not only provides secondary cooling for the refrigerant in the first circulation loop, but also, compared to directly introducing the refrigerant from the second circulation loop into the heat exchanger for cooling, this method prevents the refrigerant temperature introduced into the first heat transfer component from being too low, avoiding condensation, and allowing the energy storage converter to be regulated to a suitable operating temperature. When the ambient temperature decreases, the energy storage thermal management system can switch to a third mode. In this mode, both the refrigerant used to introduce the first and second heat transfer components are cooled by the dry cooler 110, which can effectively save energy. Meanwhile, the energy storage thermal management system also has a fourth mode for cooling the energy storage converter only, a fifth mode that does not require cooling the battery and energy storage converter but can ensure uniform temperature of the battery and energy storage converter, and a heating mode for heating the battery. The energy storage thermal management system integrates multiple modes and has rich functions.

[0043] The above embodiments are only for illustrating the technical concept and features of this utility model. Their purpose is to enable those skilled in the art to understand the content of this utility model and implement it. They should not be used to limit the protection scope of this utility model. All equivalent changes or modifications made in accordance with the spirit and essence of this utility model should be covered within the protection scope of this utility model.

Claims

1. A dual-loop energy storage thermal management system, wherein the energy storage device is provided with a first heat transfer component for exchanging heat with an energy storage converter and a second heat transfer component for exchanging heat with a battery, characterized in that: The energy storage thermal management system includes a dry cooler (110) and a refrigeration module. The first liquid outlet (10a) of the first heat transfer component, the dry cooler (110), and the first liquid supply port (20a) of the first heat transfer component are connected in sequence through pipelines and together with the first heat transfer component form a first circulation loop in which the refrigerant can circulate. The first circulation loop is equipped with a first circulation pump (121). The refrigeration module includes a heat exchanger (240) for cooling the refrigerant. The second liquid outlet (10b) of the second heat transfer component, the heat exchanger (240), and the second liquid supply port (20b) of the second heat transfer component are connected in sequence through pipelines and together with the second heat transfer component form a second circulation loop in which the refrigerant can circulate. The second circulation loop is equipped with a second circulation pump (122). The energy storage thermal management system is further provided with a first connecting pipe (310) and a second connecting pipe (320). The first connecting pipe (310) has a first port and a second port located at both ends. The first port is connected to the pipe between the heat exchanger (240) and the second liquid supply port (20b) of the second heat transfer component. The second port is connected to the pipe between the dry cooler (110) and the first liquid supply port (20a) of the first heat transfer component. The first connecting pipe (310) is configured to allow the refrigerant to flow from the first port to the second port. The second connecting pipe (320) has a third port and a fourth port located at both ends. The third port is connected to the pipe in the second circulation loop and is located upstream of the first port along the direction of the refrigerant flow to the second heat transfer component. The fourth port is connected to the pipe between the dry cooler (110) and the second port. A control valve (330) for controlling the opening and closing of the pipe is provided on the first connecting pipe (310) or the second connecting pipe (320).

2. The dual-loop energy storage thermal management system according to claim 1, characterized in that, The energy storage thermal management system has a first mode and a second mode. In the first mode, the refrigeration module is in the on state, the first circulation pump (121) and the second circulation pump (122) are both on, and the control valve (330) is in the closed state. In the second mode, the refrigeration module is in the on state, the first circulation pump (121) and the second circulation pump (122) are both on, the control valve (330) is in the open state, the refrigerant flows from the first port to the second port, and the refrigerant flows from the fourth port to the third port.

3. The dual-loop energy storage thermal management system according to claim 2, characterized in that, The energy storage thermal management system is equipped with a three-way valve (130). The first port of the three-way valve (130) is connected to the second liquid outlet (10b) of the second heat transfer component through a pipeline. The second port of the three-way valve (130) is connected to the heat exchanger (240) through a pipeline. The third port of the three-way valve (130) is connected to the pipeline between the first liquid outlet (10a) of the first heat transfer component and the dry cooler (110) through a pipeline. In the first mode and the second mode, the first interface is connected to the second interface; the energy storage thermal management system also has a third mode, in which the refrigeration module is in a closed state, the first interface is connected to the third interface, and the control valve (330) is in a closed state.

4. The dual-loop energy storage thermal management system according to claim 3, characterized in that, The energy storage thermal management system has a fourth mode. In the fourth mode, the first interface is connected to the second interface, the refrigeration module is in a closed state, and the control valve (330) is in a closed state.

5. The dual-loop energy storage thermal management system according to claim 2, characterized in that, A heater (140) is provided in the pipeline of the second circulation loop. The heater (140) is located in the pipeline between the heat exchanger (240) and the second liquid supply port (20b) of the second heat transfer component. In the first mode and the second mode, the heater (140) is turned off. The energy storage thermal management system has a heating mode. In the heating mode, the refrigeration module is turned off and the heater (140) is turned on.

6. The dual-loop energy storage thermal management system according to claim 1, characterized in that, The third port is connected to the pipeline between the second liquid outlet (10b) of the second heat transfer component and the heat exchanger (240); or, the third port is connected to the pipeline between the heat exchanger (240) and the first port.

7. The dual-loop energy storage thermal management system according to claim 1, characterized in that, The first circulating pump (121) is disposed on the pipeline between the fourth port and the second port, and the second circulating pump (122) is disposed on the pipeline between the third port and the first port. The energy storage thermal management system includes an expansion tank (150), which is connected to the pipeline between the fourth port and the first circulating pump (121) via a pipeline; or, the expansion tank (150) is connected to the pipeline between the third port and the second circulating pump (122) via a pipeline.

8. The dual-loop energy storage thermal management system according to claim 7, characterized in that, The energy storage thermal management system is equipped with a controller and a pressure sensor. The pressure sensor is located at the inlet of the first circulating pump (121) or at the inlet of the second circulating pump (122). The pressure sensor is signal-connected to the controller, and the controller is signal-connected to the expansion tank (150). The energy storage thermal management system includes a refrigerant replenishment device (160) for replenishing refrigerant. The refrigerant replenishment device (160) includes a refrigerant replenishment line (161). The refrigerant replenishment line (161) is provided with a one-way valve (162) to prevent refrigerant backflow. The refrigerant replenishment line (161) is connected to the pipeline between the third port and the second circulation pump (122), or the refrigerant replenishment line (161) is connected to the pipeline between the fourth port and the first circulation pump (121).

9. The dual-loop energy storage thermal management system according to claim 1, characterized in that, The refrigeration module also includes a compressor (210), a condenser (220), and an electronic expansion valve (230). The heat exchanger (240) has a first fluid passage (241) and a second fluid passage (242) for heat exchange. The outlet of the compressor (210), the condenser (220), the electronic expansion valve (230), the first fluid passage (241), and the inlet of the compressor (210) are connected in sequence through pipelines to form a refrigeration circuit in which the refrigerant can circulate. The second liquid outlet (10b), the second fluid passage (242), and the second liquid supply port (20b) of the second heat transfer component are connected in sequence through pipelines to form the second circulation circuit. The dry cooler (110) and the condenser (220) share the same set of cooling fans (221).

10. The dual-loop energy storage thermal management system according to claim 1, characterized in that, The energy storage thermal management system has a fifth mode in which the refrigeration module is in a closed state and the cooling fan (221) of the dry cooler (110) is turned off.

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