Energy storage liquid cooling system

Abstract

The utility model discloses an energy storage liquid cooling system which comprises a heat exchanger. The first liquid conveying component communicates with the cold receiving end of the heat exchanger to form a first liquid cooling flow path; the refrigeration module is communicated with the cold supply end of the heat exchanger to form a refrigeration loop; an air cooling component; the second liquid conveying component is communicated with the air cooling component to form a second liquid cooling flow path; a liquid outlet of the cooled end of the heat exchanger selectively communicates with a liquid inlet of the second liquid conveying component through a first branch. A liquid inlet of the first liquid conveying component selectively communicates with a liquid outlet of the air cooling component through a second branch. When the environment temperature is high and the heat exchange efficiency of the air cooling component is low, the first liquid cooling flow path and the second liquid cooling flow path are connected in a bridging mode through the first branch and the second branch, a low-temperature secondary refrigerant in the first liquid cooling flow path can be partially led into the second liquid cooling flow path through the first branch, cooling capacity compensation of the PCS is achieved, insufficient cooling capacity of the PCS is made up, and normal operation of the PCS is ensured.

Description

Technical Field

[0001] This utility model relates to the field of energy storage technology, and in particular to an energy storage liquid cooling system. Background Technology

[0002] Large-scale energy storage systems typically use shipping containers as carriers, assembling battery systems, energy management systems, battery management systems (BMS), converter systems (PCS), cooling systems, fire suppression systems, lighting, and monitoring systems. With the continuous growth of installed energy storage capacity, energy storage cells are developing towards larger capacity, lower cost, and longer lifespan. The high energy density of large-capacity cells poses challenges to thermal management and temperature control in energy storage systems.

[0003] Liquid cooling temperature control technology is widely used in containerized energy storage systems. It removes the heat generated by the energy storage system through liquid circulation, thereby maintaining a stable internal temperature. Currently, PCS liquid cooling circulation systems mainly utilize natural air cooling sources. When the ambient temperature is high, insufficient cooling capacity may occur, causing the internal temperature of the PCS to rise and preventing the PCS from operating normally. Utility Model Content

[0004] In response to the problems mentioned in the background art, this utility model provides an energy storage liquid cooling system to solve the problem that in the prior art, when the external ambient temperature is high, the cooling capacity of the PCS liquid cooling circulation system is insufficient, causing the internal temperature of the PCS to rise and the PCS to fail to operate normally.

[0005] To achieve the above-mentioned objectives, the present invention employs the following technical solution:

[0006] This utility model proposes an energy storage liquid cooling system, comprising:

[0007] Heat exchanger;

[0008] The first liquid infusion component is connected to the cooling end of the heat exchanger to form a first liquid cooling flow path, which is used to dissipate heat from the energy storage battery.

[0009] A refrigeration module, which is connected to the cooling end of the heat exchanger to form a refrigeration circuit;

[0010] Air-cooled components;

[0011] The second infusion component is connected to the air-cooling component to form a second liquid-cooling flow path, which is used to dissipate heat from the PCS.

[0012] The outlet of the cooled end of the heat exchanger is selectively connected to the inlet of the second liquid delivery component via a first branch; the inlet of the first liquid delivery component is selectively connected to the outlet of the air-cooled component via a second branch.

[0013] The above embodiments have the following advantages or beneficial effects: By setting up a heat exchanger, a first liquid delivery component, a refrigeration module, an air-cooled component, and a second liquid delivery component, the refrigeration module indirectly cools the refrigerant in the first liquid cooling flow path through heat exchange via the heat exchanger; the outlet of the cooled end of the heat exchanger is selectively connected to the inlet of the second liquid delivery component through the first branch, and the inlet of the first liquid delivery component is selectively connected to the outlet of the air-cooled component through the second branch. When the ambient temperature is high and the heat exchange efficiency of the air-cooled component is low, the first branch and the second branch bridge and connect the first liquid cooling flow path and the second liquid cooling flow path. The low-temperature refrigerant in the first liquid cooling flow path can be partially introduced into the second liquid cooling flow path through the first branch, thereby compensating for the cooling capacity of the PCS and making up for the insufficient cooling capacity of the PCS, which is beneficial to ensuring the normal operation of the PCS.

[0014] In some embodiments of this application, the energy storage liquid cooling system further includes:

[0015] A first proportional regulating valve is disposed in the first branch and is used to regulate the flow rate of the first branch;

[0016] The second proportional control valve is located in the second branch and is used to regulate the flow rate of the second branch;

[0017] The first proportional control valve and the second proportional control valve are configured to adjust synchronously.

[0018] The above embodiments have the following advantages or beneficial effects: by setting a first proportional regulating valve in the first branch and a second proportional regulating valve in the second branch, the first and second proportional regulating valves can be adjusted synchronously to achieve precise distribution control of cooling capacity.

[0019] In some embodiments of this application, the energy storage liquid cooling system further includes:

[0020] A bypass branch is provided, one end of which is connected to the outlet of the first infusion component, and the other end of which is connected to the outlet of the cooling end of the heat exchanger.

[0021] A first valve, which is located in the bypass branch, is used to open or close the bypass branch.

[0022] The above embodiments have the following advantages or beneficial effects: by setting a bypass branch and a first valve, when the flow rate of the first liquid cooling flow path is too large, the flow resistance of the refrigerant flowing into the cooling end of the heat exchanger can be appropriately reduced by opening the bypass branch, thereby maintaining the stability of the hydraulic pressure supplied by the energy storage battery.

[0023] In some embodiments of this application, the cooling module includes:

[0024] A compression refrigeration unit includes a compressor, a condenser, and an electronic expansion valve. The cooling ends of the compressor, the condenser, the electronic expansion valve, and the heat exchanger are connected in sequence through pipelines to form a compression refrigeration circuit.

[0025] The above embodiments have the following advantages or beneficial effects: the compression refrigeration unit includes a compressor, a condenser and an electronic expansion valve. When the ambient temperature is high, the compressor can quickly achieve stable and efficient cooling of the first liquid cooling flow path by circulating the refrigerant.

[0026] In some embodiments of this application, the cooling module further includes:

[0027] The fluorine pump refrigeration unit includes a liquid receiver, a fluorine pump, and an electronic expansion valve. The liquid receiver, the fluorine pump, the electronic expansion valve, and the cooling supply end of the heat exchanger are connected in sequence through pipelines.

[0028] The above embodiments have the following advantages or beneficial effects: by setting up a fluorine pump refrigeration unit, which includes a liquid receiver, a fluorine pump and an electronic expansion valve, the fluorine pump is turned on when the ambient temperature is low. The power of the fluorine pump is much smaller than that of the compressor, which helps to reduce energy consumption and improve the energy utilization rate of the energy storage battery liquid cooling system.

[0029] In some embodiments of this application, the energy storage liquid cooling system further includes:

[0030] The first pipeline is connected in parallel to both ends of the compressor;

[0031] A first one-way valve is installed on the first pipeline, with its input end connected to the input end of the compressor and its output end connected to the output end of the compressor.

[0032] The above embodiments have the following advantages or beneficial effects: the first pipeline is connected in parallel to both ends of the compressor. When the ambient temperature is low, it is necessary to start the refrigerant pump, open the first one-way valve, and close the compressor, so that the refrigerant will not flow through the compressor. When the ambient temperature is high, it is necessary to start the compression refrigeration circuit. The first one-way valve is closed and the compressor is turned on, so that the refrigerant will flow through the compressor.

[0033] In some embodiments of this application, the energy storage liquid cooling system includes:

[0034] The second pipeline is connected in parallel to both ends of the fluorine pump and the reservoir;

[0035] The second check valve is installed on the second pipeline, with its input end connected to the inlet of the liquid reservoir and its output end connected to the outlet of the fluorine pump.

[0036] A first solenoid valve is disposed on the pipeline connecting the liquid reservoir and the condenser;

[0037] The second solenoid valve is installed on the pipeline connecting the reservoir and the fluorine pump.

[0038] The above embodiments have the following advantages or beneficial effects: The compression refrigeration circuit includes a second pipeline, a second one-way valve, a first solenoid valve, and a second solenoid valve. The second pipeline is connected in parallel across the refrigerant pump and the receiver. When the ambient temperature is low, the refrigerant pump is started, the first solenoid valve, the second solenoid valve, and the first one-way valve are opened, and the second one-way valve is closed. In this way, the refrigerant flows through the receiver and the refrigerant pump, which can save energy. When the ambient temperature is high and the PCS cooling capacity is insufficient, the compressor is started, the first solenoid valve, the second solenoid valve, and the first one-way valve are closed, and the second one-way valve is opened. The refrigerant does not pass through the receiver and the refrigerant pump, and the compressor is used for refrigeration to compensate for the insufficient cooling capacity of the PCS.

[0039] In some embodiments of this application, the energy storage liquid cooling system further includes:

[0040] The second pipeline is connected in parallel to both ends of the fluorine pump;

[0041] The second check valve is installed on the second pipeline, with its input end connected to the inlet of the fluorine pump and its output end connected to the outlet of the fluorine pump.

[0042] A first solenoid valve is disposed on the pipeline connecting the liquid reservoir and the condenser;

[0043] The second solenoid valve is installed on the pipeline connecting the liquid reservoir and the fluorine pump;

[0044] The third solenoid valve is disposed on the pipeline connected in parallel at both ends of the first solenoid valve, the reservoir and the second solenoid valve.

[0045] The above embodiments have the following advantages or beneficial effects: By setting a second pipeline, a second check valve, a first solenoid valve, a second solenoid valve, and a third solenoid valve, the second pipeline is connected in parallel to both ends of the refrigerant pump. When the ambient temperature is low, the refrigerant pump is started, the first solenoid valve, the second solenoid valve, and the first check valve are opened, and the third solenoid valve and the second check valve are closed. In this way, the refrigerant flows through the receiver and the refrigerant pump. When the ambient temperature is high, the PCS cooling capacity is insufficient, the compressor is started, the second check valve and the third solenoid valve are opened, and the first solenoid valve, the second solenoid valve, and the first check valve are closed. The refrigerant does not flow through the refrigerant pump and the receiver. The compressor is used for cooling, which can compensate for the insufficient cooling capacity of the PCS. The refrigerant flowing out of the condenser flows through the second pipeline.

[0046] In some embodiments of this application, the energy storage liquid cooling system further includes a temperature sensor and a pressure sensor, wherein the temperature sensor and the pressure sensor are respectively disposed at the inlet and outlet of the first liquid cooling flow path, and the inlet and outlet of the second liquid cooling flow path.

[0047] The above embodiments have the following advantages or beneficial effects: by setting temperature and pressure sensors, it is convenient to detect the temperature and pressure of the inlet and outlet of the energy storage battery and PCS in real time.

[0048] In some embodiments of this application, the energy storage liquid cooling system further includes:

[0049] Expansion tank;

[0050] The first connecting pipe has one end connected to the first liquid cooling flow path and the other end connected to the output end of the expansion tank;

[0051] A second valve is provided on the first connecting pipe and is used to open or close the first connecting pipe.

[0052] The second connecting pipe has one end connected to the second liquid cooling flow path and the other end connected to the output end of the expansion tank.

[0053] A third valve is provided on the second connecting pipe for opening or closing the second connecting pipe.

[0054] The above embodiments have the following advantages or beneficial effects: the expansion tank and the first liquid cooling flow path are connected by the first connecting pipe, and the expansion tank and the second liquid cooling flow path are connected by the second connecting pipe. The first liquid cooling flow path and the second liquid cooling flow path share the expansion tank, which is beneficial to maintaining the pressure stability of the two liquid cooling flow paths. Attached Figure Description

[0055] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0056] Figure 1 A schematic diagram of an embodiment of the energy storage liquid cooling system provided by the present invention;

[0057] Figure 2 A schematic diagram showing the flow direction of the heat transfer fluid and refrigerant in the first operating condition of the energy storage liquid cooling system provided by the present invention;

[0058] Figure 3A schematic diagram showing the flow direction of the heat transfer fluid and refrigerant in the energy storage liquid cooling system provided by the present invention under the second sub-condition;

[0059] Figure 4 A schematic diagram showing the flow direction of the heat transfer fluid and refrigerant in the second sub-condition 2 of the energy storage liquid cooling system provided by the present invention;

[0060] Figure 5 A schematic diagram showing the flow direction of the refrigerant and coolant in heating mode according to an embodiment of the energy storage liquid cooling system provided by the present invention;

[0061] Figure 6 A schematic diagram of the structure of an embodiment of the energy storage liquid cooling system provided by the present invention in the liquid replenishment state;

[0062] Figure 7 A schematic diagram of another embodiment of the energy storage liquid cooling system provided by the present invention;

[0063] Figure 8 A schematic diagram of another embodiment of the energy storage liquid cooling system provided by the present invention;

[0064] Figure 9 A schematic diagram of another embodiment of the energy storage liquid cooling system provided by the present invention;

[0065] Figure 10 This is a schematic diagram of another embodiment of the energy storage liquid cooling system provided by the present invention.

[0066] Figure label:

[0067] 1. Energy storage battery;

[0068] 2. PCS;

[0069] 3. Heat exchanger;

[0070] 4. First infusion unit;

[0071] 5. Refrigeration module; 51. Compressor; 52. Condenser; 53. Electronic expansion valve; 54. Liquid receiver; 55. Refrigerant pump; 56. First solenoid valve; 57. Second solenoid valve; 58. Third solenoid valve;

[0072] 6. Air-cooled components;

[0073] 7. Second infusion unit;

[0074] 8. First branch; 81. First proportional control valve;

[0075] 9. Second branch; 91. Second proportional control valve;

[0076] 10. Bypass branch; 101. First valve;

[0077] 20. First pipeline; 201. First check valve;

[0078] 30. Second pipeline; 301. Second check valve;

[0079] 40. Expansion tank; 401. First connecting pipe; 4011. Second valve; 402. Second connecting pipe; 4021. Third valve;

[0080] 90. Battery outlet temperature sensor; 98. Battery inlet temperature sensor; 92. PCS outlet temperature sensor; 93. PCS inlet temperature sensor; 94. Battery outlet pressure sensor; 95. Battery inlet pressure sensor; 96. PCS outlet pressure sensor; 97. PCS inlet pressure sensor;

[0081] 60. First filter; 61. Second filter;

[0082] 70. Battery-powered water heater; 71. PCS water heater;

[0083] 80. Infusion tank. Detailed Implementation

[0084] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0085] In the description of this application, it should be understood that the terms "center", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this application.

[0086] The terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this application, unless otherwise stated, "a plurality of" means two or more.

[0087] In the description of this application, it should be noted that, unless otherwise expressly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection between two components. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.

[0088] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0089] The following disclosure provides many different embodiments or examples for implementing various structures of this invention. To simplify the disclosure, specific examples of components and arrangements are described below. These are merely examples and are not intended to limit the scope of the invention. Furthermore, reference numerals and / or letters may be repeated in different examples; such repetition is for simplification and clarity and does not in itself indicate a relationship between the various embodiments and / or arrangements discussed. In addition, examples of various specific processes and materials are provided in this invention, but those skilled in the art will recognize the application of other processes and / or the use of other materials.

[0090] A complete electrochemical energy storage system mainly consists of a battery pack, a battery management system (BMS), an energy management system (EMS), a power storage converter (PCS), and other electrical equipment.

[0091] The Battery Management System (BMS) is primarily responsible for battery monitoring, evaluation, protection, and equalization. It acts as the brain of the energy storage system, serving as the link between the battery cells and the energy storage system / power station. It enables intelligent management and maintenance of each battery unit, mainly responsible for battery health detection, evaluation, and protection, ensuring the cells operate in a safer and more comfortable environment, achieving dynamic maintenance of battery consistency and precise control of ambient temperature.

[0092] A PCS (Power Conversion System), also known as a bidirectional energy storage inverter, is the core component that enables bidirectional flow of electrical energy between an energy storage system and the power grid. It is used to control the charging and discharging process of batteries and to perform AC-DC conversion.

[0093] The Energy Management System (EMS) is responsible for monitoring and controlling the energy flow within the battery storage system and coordinating the operation of the BMS, PCS, and other components.

[0094] A battery cluster typically consists of battery modules, battery packs, and a battery management system. A battery module is the basic unit of a battery cluster; it contains multiple individual battery cells and provides connection and protection for those cells. A battery pack, on the other hand, is composed of multiple battery modules connected in series or parallel, providing the overall voltage and capacity of the battery cluster.

[0095] This disclosure proposes an energy storage liquid cooling system, combined with... Figures 1 to 10 As shown, the energy storage liquid cooling system includes an energy storage battery 1, a PCS2, a heat exchanger 3, a first liquid delivery component 4, a cooling module 5, an air-cooled component 6, a second liquid delivery component 7, and a control module.

[0096] The energy storage battery 1 has a first liquid cooling channel inside, and the PCS2 has a second liquid cooling channel inside.

[0097] The first liquid delivery component 4 is connected to the cooled end of the heat exchanger 3 to form a first liquid cooling flow path. The two ends of the first liquid cooling flow path and the two ends of the first liquid cooling channel are connected by the first liquid inlet chuck and the first liquid outlet chuck, respectively. The first liquid cooling flow path and the first liquid cooling channel form a closed loop. A coolant is passed through the closed loop to cool and dissipate heat from the energy storage battery 1.

[0098] The refrigeration module 5 is connected to the cooling end of the heat exchanger 3 to form a refrigeration circuit. Refrigerant flows through the refrigeration circuit. The refrigeration module 5 is used for refrigeration. The refrigeration circuit cools the first liquid cooling flow path through the heat exchanger 3.

[0099] The second liquid infusion component 7 is connected to the air-cooling component 6 to form a second liquid cooling flow path. The two ends of the second liquid cooling flow path and the two ends of the second liquid cooling channel are connected to the second liquid inlet chuck and the second liquid outlet chuck, respectively. The second liquid cooling flow path and the second liquid cooling channel form a closed loop. A coolant is passed through the closed loop to cool and dissipate heat from the PCS2.

[0100] The outlet of the cooling end of the heat exchanger 3 is selectively connected to the inlet of the second liquid delivery component 7 via the first branch 8; the inlet of the first liquid delivery component 4 is selectively connected to the outlet of the air-cooled component 6 via the second branch 9.

[0101] Specifically, by setting up a heat exchanger 3, a first liquid delivery component 4, a refrigeration module 5, an air-cooled component 6, and a second liquid delivery component 7, the refrigeration module 5 indirectly cools the refrigerant in the first liquid cooling flow path after heat exchange through the heat exchanger 3. The outlet of the cooled end of the heat exchanger 3 is selectively connected to the inlet of the second liquid delivery component 7 through the first branch 8, and the inlet of the first liquid delivery component 4 is selectively connected to the outlet of the air-cooled component 6 through the second branch 9. When the ambient temperature is high and the heat exchange efficiency of the air-cooled component is low, the first branch 8 and the second branch 9 bridge the first liquid cooling flow path and the second liquid cooling flow path. The low-temperature refrigerant in the first liquid cooling flow path can be partially introduced into the second liquid cooling flow path through the first branch 8 and the second branch 9 to compensate for the cooling capacity of the PCS2. This can make up for the insufficient cooling capacity of the PCS2 and help ensure the normal operation of the PCS2.

[0102] Specifically, during the cooling compensation process, the first branch 8 is connected to the inlet of the second liquid delivery component 7. This is because the pressure at the inlet of the second liquid delivery component 7 is lower, which facilitates the introduction of some of the low-temperature refrigerant in the first liquid cooling flow path into the second liquid cooling flow path. The second branch 9 is connected to the inlet of the first liquid delivery component 4. The pressure at the inlet of the first liquid delivery component 4 is lower, which facilitates the return of some of the refrigerant in the second liquid cooling flow path to the first liquid cooling flow path.

[0103] Specifically, the first infusion component 4 and the second infusion component 7 include, but are not limited to, a water pump.

[0104] Specifically, the air-cooled component 6 includes a dry cooler or an air cooler.

[0105] Specifically, the heat exchanger 3 includes plate heat exchanger 3, spiral plate heat exchanger 3, plate-fin heat exchanger 3, etc.

[0106] In some embodiments of this application, the energy storage liquid cooling system further includes a first proportional regulating valve 81 and a second proportional regulating valve 91.

[0107] The first proportional regulating valve 81 is installed in the first branch 8 and is used to regulate the flow rate of the first branch 8; the second proportional regulating valve 91 is installed in the second branch 9 and is used to regulate the flow rate of the second branch 9, wherein the first proportional regulating valve 81 and the second proportional regulating valve 91 are regulated synchronously.

[0108] Specifically, by setting a first proportional regulating valve 81 in the first branch 8, the opening degree of the first branch 8 can be adjusted, and by setting a second proportional regulating valve 91 in the second branch 9, the opening degree of the second branch 9 can be adjusted. The first proportional regulating valve 81 and the second proportional regulating valve 91 can be adjusted synchronously, that is, opened and closed at the same time, so as to realize the fine distribution control of the refrigerant in the first liquid cooling flow path.

[0109] Specifically, the first proportional control valve 81 and the second proportional control valve 91 include, but are not limited to, electric proportional control valves, pneumatic proportional control valves and electromagnetic proportional control valves.

[0110] In some embodiments of this application, a first filter 60 is provided in the first liquid cooling flow path, and the first filter 60 is located between the first liquid delivery component 4 and the heat exchanger 3.

[0111] A second filter 61 is provided in the second liquid cooling flow path. The second filter 61 is located on the side of the second infusion component 7 away from the air-cooled component 6.

[0112] The first filter 60 and the second filter 61 can intercept impurities such as particulate matter and metal shavings in the refrigerant, preventing them from entering the liquid cooling flow path and avoiding blockage of pipes or damage to key components such as pumps and valves.

[0113] In some embodiments of this application, the energy storage liquid cooling system further includes a bypass branch 10 and a first valve 101.

[0114] One end of the bypass branch 10 is connected to the outlet of the first infusion component 4, and the other end of the bypass branch 10 is connected to the outlet of the cooling end of the heat exchanger 3.

[0115] The first valve 101 is located in the bypass branch 10 and is used to open or close the bypass branch 10.

[0116] Specifically, by setting the bypass branch 10 and the first valve 101, when the flow rate of the first liquid cooling flow path is too large, the resistance flowing through the first filter 60 and the heat exchanger 3 will be relatively large, which will cause the pressure of the refrigerant flowing out of the heat exchanger 3 to be too low. By opening the bypass branch 10, the flow rate of the refrigerant flowing into the cooled end of the filter and the heat exchanger 3 can be appropriately reduced, avoiding excessive refrigerant pressure loss, which is conducive to maintaining the stability of the hydraulic pressure supplied by the energy storage battery 1.

[0117] In some embodiments of this application, the refrigeration module 5 includes a compression refrigeration unit.

[0118] The compression refrigeration unit includes a compressor 51, a condenser 52, and an electronic expansion valve 53. The cooling supply ends of the compressor 51, condenser 52, electronic expansion valve 53, and heat exchanger 3 are connected in sequence through pipelines to form a compression refrigeration circuit.

[0119] Specifically, the compression refrigeration unit includes a compressor 51, a condenser 52, and an electronic expansion valve 53. The compressor 51 can quickly achieve stable and efficient cooling of the first liquid cooling flow path by circulating refrigerant.

[0120] In some embodiments of this application, the refrigeration module 5 further includes a fluorine pump refrigeration unit.

[0121] The fluorine pump refrigeration unit includes a liquid receiver 54, a fluorine pump 55, and an electronic expansion valve 53. The liquid receiver 54, the fluorine pump 55, the electronic expansion valve 53, and the cooling end of the heat exchanger 3 are connected in sequence through pipelines to form a fluorine pump refrigeration circuit.

[0122] Specifically, by setting up a refrigerant pump refrigeration unit, which includes a liquid receiver 54, a refrigerant pump 55, and an electronic expansion valve 53, the operating power of the refrigerant pump 55 is usually less than 300W, while the operating power of the compressor 51 is more than 5KW. The power of the refrigerant pump 55 is much less than that of the compressor 51. Turning on the refrigerant pump 55 and turning off the compressor 51 helps to reduce energy consumption and lower the operating cost of the energy storage liquid cooling system.

[0123] In some embodiments of this application,

[0124] In the first operating condition, the outlet of the cooling end of the heat exchanger 3 is connected to the inlet of the second liquid delivery component 7 through the first branch 8, and part of the refrigerant in the first liquid cooling flow path flows into the second liquid cooling flow path through the first branch 8; the inlet of the first liquid delivery component 4 is connected to the outlet of the air-cooled component 6 through the second branch 9, and part of the refrigerant in the second liquid cooling flow path flows into the first liquid cooling flow path simultaneously through the second branch 9, thereby activating the cooling module 5 and the air-cooled component 6. The cooling module 5 cools and dissipates heat from the energy storage battery 1 and PCS2, and the air-cooled component 6 cools and dissipates heat from the PCS2.

[0125] In the second operating condition, the outlet of the cooling end of the heat exchanger 3 is disconnected from the inlet of the second liquid delivery component 7; the inlet of the first liquid delivery component 4 is disconnected from the outlet of the air-cooling component 6, and the refrigeration module 5 and the air-cooling component 6 are started. The refrigeration module 5 dissipates heat to the energy storage battery 1, and the air-cooling component 6 dissipates heat to the PCS2.

[0126] In the first operating condition, the ambient temperature is higher than that in the second operating condition. Specifically, in the first operating condition, the air-cooled component 6 dissipates heat from the PCS2, and the cooling module 5 dissipates heat from the energy storage battery 1 while also compensating for the insufficient cooling capacity of the PCS2 caused by the low heat exchange efficiency of the air-cooled component 6 at higher ambient temperatures. In the second operating condition, the PCS2 uses the air-cooled component 6 as a cooling source, which can make full use of the natural air cooling source to meet the optimal operating temperature of the PCS2, which is conducive to improving the energy utilization rate of the energy storage liquid cooling system.

[0127] In some embodiments of this application, the second operating condition includes a second sub-operating condition one and a second sub-operating condition two, wherein the ambient temperature under the second sub-operating condition one is higher than the ambient temperature under the second sub-operating condition two.

[0128] In the second sub-condition, the outlet of the cooling end of the heat exchanger 3 is disconnected from the inlet of the second liquid delivery component 7; the inlet of the first liquid delivery component 4 is disconnected from the outlet of the air-cooled component 6. The compression refrigeration unit and the air-cooled component 6 are started. The compression refrigeration circuit formed by the compressor 51, condenser 52, electronic expansion valve 53 and the cooling end of the heat exchanger 3 cools and dissipates heat to the energy storage battery 1, and the air-cooled component 6 cools and dissipates heat to the PCS2.

[0129] Under the second sub-condition, the outlet of the cooling end of the heat exchanger 3 is disconnected from the inlet of the second liquid delivery component 7; the inlet of the first liquid delivery component 4 is disconnected from the outlet of the air-cooled component 6. The fluorine pump refrigeration unit and the air-cooled component 6 are started. The fluorine pump refrigeration circuit formed by the liquid receiver 54, the fluorine pump 55, the electronic expansion valve 53 and the cooling end of the heat exchanger 52 cools and dissipates heat to the energy storage battery 1, and the air-cooled component 6 cools and dissipates heat to the PCS2.

[0130] In some embodiments of this application, the energy storage liquid cooling system further includes a first pipeline 20 and a first check valve 201.

[0131] The first pipe 20 is connected to the refrigerant pump refrigeration circuit, and the first pipe 20 is connected in parallel to both ends of the compressor 51.

[0132] The first check valve 201 is installed on the first pipeline 20. The input end of the first check valve 201 is connected to the input end of the compressor 51, and the output end of the first check valve 201 is connected to the output end of the compressor 51.

[0133] Specifically, the first pipeline 20 is connected in parallel to both ends of the compressor 51. When the ambient temperature is low and the refrigerant pump refrigeration circuit needs to be started, the first one-way valve 201 is opened and the compressor 51 is turned off, so the refrigerant will not flow through the compressor 51. When the ambient temperature is high and the compressor refrigeration circuit needs to be started, the first one-way valve 201 is closed and the compressor 51 is turned on, so the refrigerant will flow through the compressor 51.

[0134] In some embodiments of this application, the energy storage liquid cooling system includes a second pipeline 30, a second check valve 301, a first solenoid valve 56, and a second solenoid valve 57.

[0135] Combination Figures 1 to 6 As shown, the second pipeline 30 is connected in parallel to both ends of the fluorine pump 55 and the reservoir 54. The second check valve 301 is installed on the second pipeline 30. The input end of the second check valve 301 is connected to the inlet of the reservoir 54, and the output end of the second check valve 301 is connected to the outlet of the fluorine pump 55.

[0136] The first solenoid valve 56 is installed on the refrigerant pump refrigeration circuit and is located on the pipeline connecting the liquid receiver 54 and the condenser 52.

[0137] The second solenoid valve 57 is installed on the refrigerant pump refrigeration circuit and is located on the pipeline connecting the liquid receiver 54 and the refrigerant pump 55.

[0138] Specifically, the second pipeline 30 is connected to the compression refrigeration circuit. The second pipeline 30 is connected in parallel to the two ends of the refrigerant pump 55 and the receiver 54. When the ambient temperature is low, when the refrigerant pump refrigeration circuit is started, the first solenoid valve 56, the second solenoid valve 57 and the first check valve are opened, and the second check valve 301 is closed. In this way, the refrigerant flows through the receiver 54 and the refrigerant pump 55, and the refrigerant pump 55 is used for refrigeration. The refrigerant pump 55 has low power and can save energy. When the ambient temperature is high, when the compression refrigeration circuit is started, the first solenoid valve 56, the second solenoid valve 57 and the first check valve are closed, and the second check valve 301 is opened. The refrigerant does not pass through the receiver 54 and the refrigerant pump 55, and the compressor is used for refrigeration to compensate for the insufficient cooling capacity of the PCS.

[0139] In other embodiments of this application, the energy storage liquid cooling system further includes a second pipeline 30, a second one-way valve 301, a first solenoid valve 56, and a second solenoid valve 57.

[0140] The second pipe 30 is connected to the compression refrigeration circuit, combined with Figure 7 and Figure 8 As shown, the second pipeline 30 is connected in parallel to both ends of the fluorine pump 55.

[0141] The second check valve 301 is installed on the second pipeline 30. The input end of the second check valve 301 is connected to the inlet of the fluorine pump 55, and its output end is connected to the outlet of the fluorine pump 55.

[0142] The first solenoid valve 56 is installed on the refrigerant pump refrigeration circuit and is located on the pipeline connecting the liquid receiver 54 and the condenser 52.

[0143] The second solenoid valve 57 is installed on the refrigerant pump refrigeration circuit and is located on the pipeline connecting the liquid receiver 54 and the refrigerant pump 55.

[0144] The third solenoid valve 58 is installed on the compression refrigeration circuit and is connected in parallel to the pipelines at both ends of the first check valve, the liquid receiver, and the second check valve.

[0145] Specifically, by setting up a second pipeline 30, a second one-way valve 301, a first solenoid valve 56, a second solenoid valve 57, and a third solenoid valve 58, the second pipeline 30 is connected in parallel across the two ends of the refrigerant pump 55. When the ambient temperature is low, the refrigerant pump is started, the first solenoid valve 56, the second solenoid valve 57, and the first one-way valve are opened, and the third solenoid valve 58 and the second one-way valve 301 are closed. In this way, the refrigerant flows through the receiver 54 and the refrigerant pump 55. When the ambient temperature is high, the PCS cooling capacity is insufficient, the compressor is started, the second one-way valve 301 and the third solenoid valve 58 are opened, and the first solenoid valve 56, the second solenoid valve 57, and the first one-way valve are closed. The refrigerant does not flow through the refrigerant pump 55 and the receiver 54. The compressor is used for cooling, which can compensate for the insufficient cooling capacity of the PCS. The refrigerant flowing out of the condenser 52 flows through the second pipeline.

[0146] The refrigerant charge in the fluorine pump refrigeration circuit is large, which can lead to high pressure protection issues when the ambient temperature is high. By setting up a solenoid valve to short-circuit the liquid receiver 54 under system control, the system operating pressure can be reduced, which helps to ensure the reliable operation of the refrigerant circulation system.

[0147] On the other hand, combining Figure 6 and Figure 7 As shown, Figure 6 By connecting the second pipeline 30 in parallel to both ends of the refrigerant pump 55 and the receiver 54, no additional solenoid valve is needed in the compression refrigeration circuit, which simplifies the structure and helps reduce costs.

[0148] In some embodiments, the energy storage liquid cooling system further includes an expansion tank, and the first liquid cooling flow path and the second liquid cooling flow path share the same expansion tank, see [link to relevant documentation]. Figure 1 Alternatively, the first and second liquid cooling flow paths may each be equipped with corresponding expansion tanks, see [link / reference]. Figure 8 .

[0149] Specifically, by setting up an expansion tank, which is used to regulate the pressure of the liquid cooling system, the expansion tank can accommodate the extra refrigerant when it is heated and expands, preventing the system pressure from becoming too high; when the refrigerant cools and contracts, the refrigerant in the expansion tank can flow back into the system, which helps to maintain the stability of the pressure of the two liquid cooling flow paths.

[0150] Combination Figure 1 Taking the first liquid cooling flow path and the second liquid cooling flow path sharing the same expansion tank as an example: the energy storage liquid cooling system includes an expansion tank 40, a first connecting pipe 401, a second valve 4011, a second connecting pipe 402, and a third valve 4021.

[0151] One end of the first connecting pipe 401 is connected to the first liquid cooling flow path, and the other end of the first connecting pipe 401 is connected to the output end of the expansion tank 40.

[0152] The second valve 4011 is provided on the first connecting pipe 401 and is used to open or close the first connecting pipe 401.

[0153] One end of the second connecting pipe 402 is connected to the second liquid cooling flow path, and the other end of the second connecting pipe 402 is connected to the output end of the expansion tank 40.

[0154] The third valve 4021 is installed on the second connecting pipe 402 and is used to open or close the second connecting pipe 402.

[0155] When the refrigerant liquid pressure detected by the battery outlet pressure sensor 94, battery inlet pressure sensor 95, PCS outlet pressure sensor 96, and PCS inlet pressure sensor 97 is abnormal, the control module will control the second valve 4011 and the third valve 4021 to open or close, so as to keep the refrigerant liquid pressure in the first liquid cooling flow path and the second liquid cooling flow path normal.

[0156] In some embodiments of this application, the energy storage liquid cooling system further includes a temperature sensor and a pressure sensor, which are respectively disposed at the inlet of the first liquid cooling flow path, the outlet of the first liquid cooling flow path, the inlet of the second liquid cooling flow path, and the outlet of the second liquid cooling flow path.

[0157] Specifically, by setting temperature and pressure sensors, it is easy to detect the temperature and pressure of the liquid inlet and outlet of the energy storage battery 1, as well as the temperature and pressure of the liquid inlet and outlet of the PCS2 in real time.

[0158] Specifically, the temperature sensors include battery outlet temperature sensor 90, battery inlet temperature sensor 98, PCS outlet temperature sensor 92, and PCS inlet temperature sensor 93.

[0159] Specifically, the battery outlet temperature sensor 90 is located at the inlet of the first liquid cooling flow path, the battery inlet temperature sensor 98 is located at the outlet of the first liquid cooling flow path, the PCS outlet temperature sensor 92 is located at the inlet of the second liquid cooling flow path, and the PCS inlet temperature sensor 93 is located at the outlet of the second liquid cooling flow path.

[0160] Specifically, the pressure sensors include battery outlet pressure sensor 94, battery inlet pressure sensor 95, PCS outlet pressure sensor 96, and PCS inlet pressure sensor 97.

[0161] Specifically, the battery outlet pressure sensor 94 is located at the inlet of the first liquid cooling flow path, the battery inlet pressure sensor 95 is located at the outlet of the first liquid cooling flow path, the PCS outlet pressure sensor 96 is located at the inlet of the second liquid cooling flow path, and the PCS inlet pressure sensor 97 is located at the outlet of the second liquid cooling flow path.

[0162] In some embodiments of this application, the energy storage liquid cooling system further includes a replenishment tank 80 and a replenishment pump. The replenishment tank is used to replenish liquid to the first liquid cooling flow path and the second liquid cooling flow path. The first liquid cooling flow path and the second liquid cooling flow path share the same replenishment pump (see [reference]). Figure 1 Alternatively, the first and second liquid cooling flow paths may each be equipped with corresponding replenishment pumps to participate in... Figure 7 .

[0163] Taking the first liquid cooling flow path and the second liquid cooling flow path as an example of sharing the same replenishing pump, the input end of the replenishing pump is connected to the replenishing tank 80, and the output end of the replenishing pump is connected to the first liquid cooling flow path through the first replenishing branch and to the second liquid cooling flow path through the second replenishing branch.

[0164] Control valves are installed on the first and second replenishment branches respectively. Taking the energy storage battery side as an example, when the energy storage battery outlet pressure is detected to be lower than the replenishment pressure, the replenishment pump is started and the corresponding control valve is opened to replenish the liquid. When the energy storage battery outlet pressure reaches the normal range, the replenishment stops. The replenishment process on the PCS side is similar to the above, and will not be described in detail here.

[0165] In some other embodiments of this application, a safety valve is provided in both the first liquid cooling flow path and the second liquid cooling flow path. The output end of the safety valve is connected to the replenishment tank 80. This allows the refrigerant discharged from the safety valve to be introduced into the replenishment tank 80, thus avoiding waste of the refrigerant.

[0166] In other embodiments of this application, the energy storage liquid cooling system further includes a battery water heater 70 and a PCS water heater 71. The battery water heater 70 is located between the heat exchanger 3 and the first outlet chuck; the PCS water heater 71 is located between the air-cooled component 6 and the second outlet chuck.

[0167] In other embodiments of this application, the first infusion component 4, the second infusion component 7, the first proportional regulating valve 81, the second proportional regulating valve 91, the first valve 101, the compressor 51, the refrigerant pump 55, the first check valve 201, the second check valve 301, the first solenoid valve 56, the second solenoid valve 57, the third solenoid valve 58, the second valve 4011, the third valve 4021, the replenishment pump, the control valve, the battery outlet temperature sensor 90, the battery inlet temperature sensor 98, the PCS outlet temperature sensor 92, the PCS inlet temperature sensor 93, the battery outlet pressure sensor 94, the battery inlet pressure sensor 95, the PCS outlet pressure sensor 96, and the PCS inlet pressure sensor 97 are all electrically connected to the control module.

[0168] Referring to the attached diagram, the temperature control process of the energy storage liquid cooling system is as follows:

[0169] In cooling mode:

[0170] (1) Under the first operating condition, see Figure 2 .

[0171] When Tring > Ta, for example, Ta = 45℃, the refrigeration module 5 uses compressor 51 for cyclic refrigeration, closes the first solenoid valve 56, the second solenoid valve 57, and the first check valve 201, and opens the third solenoid valve 58, the second check valve 301, the first proportional regulating valve 81, and the second proportional regulating valve 91.

[0172] The refrigerant circulation process: The high-temperature and high-pressure refrigerant discharged from the compressor 51 is condensed and heat exchanged in the condenser 52, then passes through the third solenoid valve 58 and the second one-way valve 301 (at this time, it does not pass through the refrigerant pump 55), the filter, and is throttled and depressurized in the electronic expansion valve 53. Then it enters the refrigeration end of the heat exchanger 3 for evaporation and heat exchange, and then returns to the compressor 51 for compression.

[0173] The refrigerant circulation process: The high-temperature refrigerant from the energy storage battery 1 enters the cooling end of the heat exchanger 3 through the first inlet chuck, the first liquid delivery component 4, and the first filter 60 to release heat and cool down. Then, through the battery water heater 70 (not working in cooling mode), part of the refrigerant enters the first liquid cooling channel through the first outlet chuck to cool the energy storage battery 1 and circulates. The other part of the refrigerant enters the second liquid cooling flow path through the first branch 8 to compensate for the cooling capacity of the PCS2.

[0174] PCS liquid cooling circulation process: The high-temperature refrigerant from PCS2 passes through the second inlet chuck and merges with the refrigerant from the first branch 8. It then enters the air-cooling component 6 through the second liquid delivery component 7. The air-cooling component 6 uses natural cold source to cool the refrigerant. Then, the refrigerant passes through the PCS water heater 71 (not working in cooling mode). Part of the refrigerant enters the second liquid cooling channel through the second outlet chuck to cool the interior of PCS2 and circulate. The other part of the refrigerant enters the first liquid cooling flow path through the second branch 9 and circulates.

[0175] The liquid outlet temperature of energy storage battery 1 is around 18~22℃, and the liquid outlet temperature of PCS2 is around 40~55℃. The liquid outlet temperature To_PCS on the PCS2 side is used as the target temperature.

[0176] When the detected PCS outlet temperature is greater than To_PCS + Δ1℃, the first proportional control valve 81 and the second proportional control valve 91 are simultaneously opened to a larger degree. At the same time, the compressor 51 frequency increases by Δ2Hz every 30 seconds until the PCS outlet temperature is less than or equal to To_PCS - Δ3℃. At this point, the current opening degree of the first proportional control valve 81 and the second proportional control valve 91 and the operating frequency of the compressor 51 after the increase are adjusted until the PCS outlet temperature is less than or equal to To_PCS - Δ4℃. Then, the first proportional control valve 81 and the second proportional control valve 91 are simultaneously closed to a smaller degree. At the same time, the compressor 51 frequency decreases by Δ4Hz every 30 seconds. When the PCS outlet temperature is less than or equal to To_PCS - Δ5℃, the first proportional control valve 81 and the second proportional control valve 91 are closed. The compressor 51 frequency is reduced to the operating frequency before the frequency increase and maintained. Then, the compressor switches to automatic PID adjustment based on the outlet temperature To_coil measured by the energy storage battery 1.

[0177] For example: When To_PCS = 45℃, the outlet liquid temperature To_coil on the energy storage battery 1 side is set to 18℃. When To_PCS > 45℃, the first proportional regulating valve 81 and the second proportional regulating valve 91 are controlled to open simultaneously to ensure that the outlet liquid temperature on the PCS2 side reaches 45℃; at the same time, the frequency of the corresponding compressor 51 is increased to improve the cooling performance, ensuring that the outlet liquid temperature To_coil on the energy storage battery 1 side is ≤ 18℃; when To_PCS ≤ 45℃, the first proportional regulating valve 81 and the second proportional regulating valve 91 are controlled to close simultaneously, and at the same time, the frequency of the corresponding compressor 51 is reduced to reduce the cooling output of the compressor 51, maintaining the outlet liquid temperature To_coil on the energy storage battery 1 side ≤ 18℃.

[0178] (2) Under the second sub-condition, see Figure 3 .

[0179] When Tb < T_loop ≤ Ta, Ta and Tb can be set, for example, Ta = 45℃, Tb = 5℃. The refrigeration module 5 uses compressor 51 for cyclic refrigeration, closes the first solenoid valve 56, the second solenoid valve 57, the first proportional regulating valve 81 and the second proportional regulating valve 91, and opens the third solenoid valve 58.

[0180] The high-temperature, high-pressure refrigerant discharged from the compressor 51 is condensed and heat-exchanged in the condenser 52, then passes through the third solenoid valve 58 and the second one-way valve 301 (at this time, it does not pass through the refrigerant pump 55), and the filter. It is then throttled and depressurized in the electronic expansion valve 53, and then enters the refrigeration end of the heat exchanger 3 for evaporation and heat exchange, and then returns to the compressor 51 for compression.

[0181] Coolant circulation system: The high-temperature coolant from the energy storage battery 1 enters the cooling end of the heat exchanger 3 through the first inlet chuck, the first liquid delivery component 4, and the first filter 60 to release heat and cool down. Then it passes through the battery water heater 70 (not working in cooling mode) and then enters the first liquid cooling channel through the first outlet chuck to cool down the energy storage battery 1.

[0182] PCS liquid cooling cycle process: The refrigerant from PCS2 enters the second liquid delivery component 7 and the air-cooling component 6 after passing through the second liquid inlet chuck. It is cooled by the natural cold source of the air-cooling component 6. The cooled refrigerant passes through the PCS water heater 71 (not working in cooling mode) and finally enters the second liquid cooling channel through the second liquid outlet chuck to cool the inside of PCS2.

[0183] (3) Under the second sub-condition, see Figure 4 .

[0184] When Tring ≤ Tb, Tb can be set, for example, Tb = 5℃. The refrigeration module 5 uses a refrigerant pump 55 for cyclic refrigeration, opening the first one-way valve 201, the first solenoid valve 56, and the second solenoid valve 57, and closing the third solenoid valve 58, the second one-way valve 301, the first proportional regulating valve 81, and the second proportional regulating valve 91.

[0185] Refrigerant cycle process: The high-temperature and high-pressure refrigerant from the cooling end of heat exchanger 3 enters the condenser 52 for condensation and heat exchange through the first one-way valve 201 (without passing through the compressor 51 at this time), and then enters the refrigerant pump 55 for pressurization through the first solenoid valve 56, the liquid receiver 54, and the second solenoid valve 57. After passing through the filter and the electronic expansion valve 53 (the refrigerant pump 55 is kept at its maximum opening in the refrigeration cycle mode), it enters the cooling end of heat exchanger 3 for evaporation and heat exchange, thus completing the refrigerant cycle refrigeration.

[0186] The refrigerant circulation process: The high-temperature refrigerant from the energy storage battery 1 enters the cooling end of the heat exchanger 3 through the first inlet chuck, the first liquid delivery component 4, and the first filter 60 to release heat and cool down. Then it passes through the battery water heater 70 (not working in cooling mode) and then enters the first liquid cooling channel through the first outlet chuck to cool down the energy storage battery 1.

[0187] PCS liquid cooling cycle process: The refrigerant from PCS2 enters the second liquid delivery component 7 and the air-cooling component 6 after passing through the second liquid inlet chuck. It is cooled by the natural cold source of the air-cooling component 6. The cooled refrigerant passes through the PCS water heater 71 (not working in cooling mode) and finally enters the second liquid cooling channel through the second liquid outlet chuck to cool the inside of PCS2.

[0188] In heating mode, see Figure 5 :

[0189] Refrigeration module 5 is not working, and the refrigerant circulation process does not occur. During the refrigerant circulation process, the first liquid delivery component 4 and the battery water heater 70 are activated, and the battery water heater 70 heats the refrigerant in the first liquid cooling flow path.

[0190] When the air-cooled component 6 is not working, the second infusion component 7 and the PCS water heater 71 are started. The PCS water heater 71 heats the refrigerant in the second liquid cooling flow path.

[0191] In the description of the above embodiments, specific features, structures, materials, or characteristics may be combined in any suitable manner in one or more embodiments or examples.

[0192] The above are merely specific embodiments of this utility model, but the protection scope of this utility model is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in this utility model should be included within the protection scope of this utility model. Therefore, the protection scope of this utility model should be determined by the scope of the claims.

Claims

1. An energy storage liquid cooling system, characterized in that, include: Heat exchanger; The first liquid infusion component is connected to the cooling end of the heat exchanger to form a first liquid cooling flow path, which is used to dissipate heat from the energy storage battery. A refrigeration module, which is connected to the cooling end of the heat exchanger to form a refrigeration circuit; Air-cooled components; The second infusion component is connected to the air-cooling component to form a second liquid-cooling flow path, which is used to dissipate heat from the PCS. The outlet of the cooled end of the heat exchanger is selectively connected to the inlet of the second liquid delivery component via a first branch; the inlet of the first liquid delivery component is selectively connected to the outlet of the air-cooled component via a second branch.

2. The energy storage liquid cooling system according to claim 1, characterized in that, The energy storage liquid cooling system also includes: A first proportional regulating valve is disposed in the first branch and is used to regulate the flow rate of the first branch; The second proportional control valve is located in the second branch and is used to regulate the flow rate of the second branch; The first proportional control valve and the second proportional control valve are configured to adjust synchronously.

3. The energy storage liquid cooling system according to claim 1, characterized in that, The energy storage liquid cooling system also includes: A bypass branch is provided, one end of which is connected to the outlet of the first infusion component, and the other end of which is connected to the outlet of the cooling end of the heat exchanger. A first valve, which is located in the bypass branch, is used to open or close the bypass branch.

4. The energy storage liquid cooling system according to claim 1, characterized in that, The cooling module includes: A compression refrigeration unit includes a compressor, a condenser, and an electronic expansion valve. The cooling ends of the compressor, the condenser, the electronic expansion valve, and the heat exchanger are connected in sequence through pipelines to form a compression refrigeration circuit.

5. The energy storage liquid cooling system according to claim 4, characterized in that, The refrigeration module also includes: The fluorine pump refrigeration unit includes a liquid receiver, a fluorine pump, and an electronic expansion valve. The liquid receiver, the fluorine pump, the electronic expansion valve, and the cooling supply end of the heat exchanger are connected in sequence through pipelines.

6. The energy storage liquid cooling system according to claim 5, characterized in that, The energy storage liquid cooling system also includes: The first pipeline is connected in parallel to both ends of the compressor; A first one-way valve is installed on the first pipeline, with its input end connected to the input end of the compressor and its output end connected to the output end of the compressor.

7. The energy storage liquid cooling system according to claim 6, characterized in that, The energy storage liquid cooling system also includes: The second pipeline is connected in parallel to both ends of the fluorine pump and the reservoir; The second check valve is installed on the second pipeline, with its input end connected to the inlet of the liquid reservoir and its output end connected to the outlet of the fluorine pump. A first solenoid valve is disposed on the pipeline connecting the liquid reservoir and the condenser; The second solenoid valve is installed on the pipeline connecting the reservoir and the fluorine pump.

8. The energy storage liquid cooling system according to claim 6, characterized in that, The energy storage liquid cooling system also includes: The second pipeline is connected in parallel to both ends of the fluorine pump; The second check valve is installed on the second pipeline, with its input end connected to the inlet of the fluorine pump and its output end connected to the outlet of the fluorine pump. A first solenoid valve is disposed on the pipeline connecting the liquid reservoir and the condenser; The second solenoid valve is installed on the pipeline connecting the liquid reservoir and the fluorine pump; The third solenoid valve is disposed on the pipeline connected in parallel at both ends of the first solenoid valve, the reservoir and the second solenoid valve.

9. The energy storage liquid cooling system according to claim 1, characterized in that, The energy storage liquid cooling system also includes a temperature sensor and a pressure sensor, which are respectively located at the inlet and outlet of the first liquid cooling flow path and the inlet and outlet of the second liquid cooling flow path.

10. The energy storage liquid cooling system according to claim 1, characterized in that, The energy storage liquid cooling system also includes: Expansion tank; The first connecting pipe has one end connected to the first liquid cooling flow path and the other end connected to the output end of the expansion tank; A second valve is provided on the first connecting pipe and is used to open or close the first connecting pipe. The second connecting pipe has one end connected to the second liquid cooling flow path and the other end connected to the output end of the expansion tank. A third valve is provided on the second connecting pipe for opening or closing the second connecting pipe.

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