Energy storage temperature control system

Abstract

The utility model discloses an energy storage temperature control system, which comprises a first heat transfer component, a second heat transfer component, a gas compressor, a first heat exchanger and an electronic expansion valve, wherein the first heat transfer component is used for exchanging heat with an energy storage battery; the second heat transfer component is used for exchanging heat with an energy storage converter; the first heat transfer component and the second heat transfer component are provided with fluid channels. An outlet of the gas compressor, the first heat exchanger, the electronic expansion valve and the first heat transfer component are sequentially connected through pipelines to form a first cooling channel. The first heat transfer component and the second heat transfer component are connected through a pipeline to form a second cooling passage; the second heat transfer part is connected with an inlet of the gas compressor through a pipeline to form a cooling backflow channel; the first cooling passage, the fluid passage of the first heat transfer component, the second cooling passage, the fluid passage of the second heat transfer component and the cooling backflow passage form a cooling circulation passage; the temperature control system can cool the energy storage battery and the energy storage converter at the same time, and the energy efficiency is high.

Description

TECHNICAL FIELD

[0001] The utility model relates to a kind of energy storage temperature control systems, in particular to the cooling system of energy storage battery and the cooling system of energy storage converter integrated temperature control system. BACKGROUND

[0002] Energy storage system is a kind of equipment or system that can store energy, which can store excess energy and use when needed. Energy storage system is usually used to improve energy utilization efficiency, reduce energy waste, improve power grid stability, etc. Energy storage system can include batteries, supercapacitors, flywheels, hydraulic systems and other devices or technologies, among which batteries are one of the most commonly used energy storage methods. Energy storage system can be used in various application scenarios, such as power grid peak shaving, renewable energy grid connection, electric vehicle charging, home energy storage, etc.

[0003] During the operation of the energy storage system, the battery will generate a lot of heat, and if the heat cannot be removed in time, it will cause the temperature of the device to rise, which will bring safety hazards and affect the performance of the battery and the normal operation of the system. At the same time, the battery pack needs to be in a suitable stable state to play the role of energy storage, so it also needs to be heated when the ambient temperature is low. Energy storage converter (PCS) is also a key control device in the energy storage system, and energy storage converter (PCS) is the second most heat-generating device after the battery, so temperature control of energy storage converter (PCS) is also needed to ensure the normal operation of energy storage converter (PCS) and the system.

[0004] In the existing thermal management system, the cooling system uses air cooling, liquid cooling and direct cooling. Most battery cooling systems and energy storage converter cooling systems are independent of each other. Some cooling systems that use liquid cooling can integrate both battery cooling and energy storage converter cooling functions, but the cooling system that uses liquid cooling needs to perform secondary heat exchange when operating, which has low thermal efficiency. At the same time, the cooling system that uses liquid cooling needs to set up a water pump to circulate the cooling liquid, which increases power consumption. UTILITY MODEL CONTENTS

[0005] The utility model aims to provide a new energy storage temperature control system.

[0006] To achieve the above-mentioned purpose, the utility model adopts the technical scheme of: an energy storage temperature control system, comprising a heat supply module and a heat transfer module, the heat transfer module comprising a first heat transfer component for heat exchange with an energy storage battery and a second heat transfer component for heat exchange with an energy storage converter, the first heat transfer component and the second heat transfer component each having a first port, a second port and a fluid channel communicating the first port and the second port, the heat supply module comprising a gas compressor, a first heat exchanger and an electronic expansion valve.

[0007] The energy storage temperature control system has a cooling mode, in which the outlet of the gas compressor, the first heat exchanger, the electronic expansion valve, and the first port of the first heat transfer component are sequentially connected by pipelines to form a first cooling passage for supplying refrigerant to the first heat transfer component; the second port of the first heat transfer component and the first port of the second heat transfer component are connected by a pipeline to form a second cooling passage for supplying refrigerant to the second heat transfer component; the second port of the second heat transfer component and the inlet of the gas compressor are connected by a pipeline to form a cooling return passage for recovering refrigerant; and the first cooling passage, the fluid passage of the first heat transfer component, the second cooling passage, the fluid passage of the second heat transfer component, and the cooling return passage constitute a cooling circulation passage.

[0008] The energy storage temperature control system further comprises a controller, and the heat supply module is connected to and controlled by the controller.

[0009] In some embodiments, a first branch pipeline is connected between the first cooling passage and the second cooling passage, and has a first connecting end and a second connecting end separately arranged at two ends. The first connecting end is connected to a pipeline between the electronic expansion valve and the first port of the first heat transfer component, and the second connecting end is connected to the second cooling passage. The outlet of the gas compressor, the first heat exchanger, the electronic expansion valve, the first branch pipeline, and the first port of the second heat transfer component are sequentially connected by pipelines to form a PCS cooling passage for directly supplying refrigerant to the second heat transfer component, and the PCS cooling passage and the cooling return passage constitute a PCS cooling circulation passage.

[0010] In some embodiments, the heat supply module further comprises a circulating pump, and the outlet of the circulating pump is connected to the first port of the first heat transfer component by a pipeline to form a circulating pump cooling passage for supplying refrigerant to the first heat transfer component. The second port of the second heat transfer component, the first heat exchanger, and the inlet of the circulating pump are sequentially connected by pipelines to form a circulating pump return passage for recovering refrigerant. The circulating pump cooling passage, the fluid passage of the first heat transfer component, the second cooling passage, the fluid passage of the second heat transfer component, and the circulating pump return passage constitute a circulating pump cooling circulation passage.

[0011] In some embodiments, the energy storage temperature control system has a PCS cooling circulation passage, a first electromagnetic valve is arranged on the first branch pipeline, a second electromagnetic valve is arranged on the pipeline between the first connection end and the first port of the first heat transfer component, or the second electromagnetic valve is arranged on the pipeline between the second connection end and the second port of the first heat transfer component, and the first electromagnetic valve and the second electromagnetic valve are respectively connected with the controller; when the first electromagnetic valve is opened and the second electromagnetic valve is closed, the PCS cooling passage is connected, and the PCS cooling circulation passage is opened; when the first electromagnetic valve is closed and the second electromagnetic valve is opened, the PCS cooling passage is closed, the first cooling passage and the second cooling passage are connected, and the cooling circulation passage is opened.

[0012] In some embodiments, the energy storage temperature control system has a circulation pump cooling circulation passage, the heat supply module has a first parallel branch, the first parallel branch has a first end portion and a second end portion arranged at two ends, the first end portion is connected with the pipeline between the electronic expansion valve and the first heat exchanger, and the second end portion is connected with the pipeline between the electronic expansion valve and the first port of the first heat transfer component, and the circulation pump is arranged on the first parallel branch; the heat supply module has a second parallel branch, the second parallel branch has a third end portion and a fourth end portion arranged at two ends, the third end portion is connected with the pipeline between the second port of the second heat transfer component and the gas compressor inlet, and the fourth end portion is connected with the pipeline at the gas compressor outlet; the second port of the second heat transfer component, the second parallel branch, the first heat exchanger and the inlet of the circulation pump are sequentially connected through the pipeline to form the circulation pump backflow passage.

[0013] In some embodiments, a third electromagnetic valve is arranged between the inlet of the gas compressor and the third end portion, or the third electromagnetic valve is arranged between the outlet of the gas compressor and the fourth end portion, and the third electromagnetic valve is connected with the controller; when the circulation pump is opened, the electronic expansion valve is closed, and the third electromagnetic valve is closed, the circulation pump cooling circulation passage is connected, and the cooling circulation passage is closed; when the circulation pump is closed, the electronic expansion valve is opened, and the third electromagnetic valve is opened, the cooling circulation passage is connected, and the circulation pump cooling circulation passage is closed.

[0014] In some embodiments, the energy storage temperature control system has a circulating pump cooling circulation passage, a first branch pipe is connected between the first cooling passage and the second cooling passage, the first branch pipe has a first connection end and a second connection end arranged at two ends, the first connection end is connected to a pipe between an outlet of the circulating pump and a first port of the first heat transfer component, and the second connection end is connected to the second cooling passage; the outlet of the circulating pump, the first branch pipe and the first port of the second heat transfer component are connected by pipes to form a circulating pump PCS cooling passage for directly supplying refrigerant to the second heat transfer component, and the circulating pump PCS cooling passage and the circulating pump return passage constitute a circulating pump PCS cooling circulation passage.

[0015] In some embodiments, the energy storage temperature control system has a circulating pump cooling circulation passage, a second branch pipe is connected between the first cooling passage and the second cooling passage, one end of the second branch pipe is connected to a pipe between the first heat exchanger and the circulating pump, and the other end of the second branch pipe is connected to the second cooling passage; a fourth electromagnetic valve is arranged on the second branch pipe, the fourth electromagnetic valve is signal-connected to the controller, and when the fourth electromagnetic valve is opened and the circulating pump is opened, a free cooling circulation passage is formed between the circulating pump and the first heat transfer component.

[0016] In some embodiments, the heat supply module includes a second heat exchanger, and the temperature control system further has a heating mode, in which the outlet of the gas compressor is connected to the second heat exchanger by a pipe, the second heat exchanger is connected to the second port of the first heat transfer component by a pipe, a third branch pipe is connected between the two pipes, the third branch pipe has a first interface and a second interface arranged at two ends, the first interface is connected to the pipe between the gas compressor and the second heat exchanger, and the second interface is connected to the pipe between the second heat exchanger and the second port of the first heat transfer component; the outlet of the gas compressor, the second heat exchanger / third branch pipe and the second port of the first heat transfer component are connected to form a heating passage for supplying refrigerant to the first heat transfer component; the first port of the first heat transfer component, the first heat exchanger and the inlet of the gas compressor are sequentially connected by pipes to form a heating return passage for recovering refrigerant, and the heating passage, the fluid passage in the first heat transfer component and the heating return passage constitute a heating circulation passage.

[0017] In some embodiments, a fifth electromagnetic valve is arranged between the first interface and the second heat exchanger, and the fifth electromagnetic valve is connected to the controller; the second interface is connected to the second cooling passage through a third parallel branch, the third parallel branch has a fifth end and a sixth end arranged at two ends, the fifth end is connected to a pipeline between the second port of the second heat transfer component and the second interface, and the sixth end is connected to the second cooling passage; in the cooling mode, the fifth electromagnetic valve is closed, the third parallel branch is closed, and the second port of the second heat transfer component, the third branch pipeline and the inlet of the gas compressor are sequentially connected to form the cooling return passage; in the heating mode, the fifth electromagnetic valve can be closed, the third parallel branch is opened, and the outlet of the gas compressor, the second heat exchanger / third branch pipeline, the third parallel branch and the second port of the first heat transfer component are connected to form the heating passage.

[0018] In some embodiments, the heat supply module includes a capillary tube, the capillary tube is arranged in parallel with the electronic expansion valve through a fourth parallel branch, the fourth parallel branch has a seventh end and an eighth end arranged at two ends, the seventh end is connected to a pipeline between the first heat exchanger and the electronic expansion valve, and the eighth end is connected to a pipeline between the electronic expansion valve and the first port of the first heat transfer component, the capillary tube is arranged on the fourth parallel branch, a sixth one-way valve is arranged between the capillary tube and the eighth end, and the sixth one-way valve is configured to allow only one-way flow of refrigerant from the capillary tube to the eighth end.

[0019] Thanks to the use of the above technical solutions, the utility model has the following advantages compared with the prior art: the utility model can simultaneously cool the energy storage battery and the energy storage converter by using a set of energy storage temperature control system, and the temperature control system cools by using a direct cooling method, which can save energy and improve efficiency compared with air cooling and liquid cooling. Compared with the prior art, the utility model can be used for thermal management of high-energy-density energy storage boxes, and at least one of cost, energy efficiency and stability is superior to existing temperature control systems. BRIEF DESCRIPTION OF DRAWINGS

[0020] FIG. 1 is a schematic diagram of an energy storage temperature control system according to an embodiment of the utility model; Figure 1 FIG. 2 is a schematic diagram of a cooling circulation passage of the energy storage temperature control system of the embodiment of the utility model;

[0021] FIG. 3 is a schematic diagram of a circulating pump cooling circulation passage of the energy storage temperature control system of the embodiment of the utility model; Figure 2 FIG. 4 is a schematic diagram of a PCS cooling circulation passage of the energy storage temperature control system of the embodiment of the utility model;

[0022] FIG. 5 is a schematic diagram of a cooling circulation passage of an energy storage temperature control system according to another embodiment of the utility model; Figure 3 FIG. 6 is a schematic diagram of a cooling circulation passage of an energy storage temperature control system according to another embodiment of the utility model;

[0023] Figure 2 is a schematic diagram of a cooling circulation passage of the energy storage temperature control system of the embodiment; Figure 4 Figure 3 is a schematic diagram of a free cooling circulation passage of the energy storage temperature control system of the embodiment;

[0024] Figure 4 is a schematic diagram of a heating circulation passage of the energy storage temperature control system of the embodiment; Figure 5 Figure 5 is a schematic diagram of a cooling circulation passage of the energy storage temperature control system of the embodiment;

[0025] Figure 6 is a schematic diagram of a free cooling circulation passage of the energy storage temperature control system of the embodiment; Figure 6 Figure 7 is a schematic diagram of a heating circulation passage of the energy storage temperature control system of the embodiment;

[0026] Wherein: 101, energy storage battery; 102, energy storage converter; 11, first heat transfer component; 12, second heat transfer component; 2, gas compressor; 3, gas-liquid separator; 41, first heat exchanger; 42, second heat exchanger; 5, fluid storage tank; 61, electronic expansion valve; 62, circulating pump; 711, first electromagnetic valve; 712, second electromagnetic valve; 713, third electromagnetic valve; 714, fourth electromagnetic valve; 715, fifth electromagnetic valve; 721, first check valve; 722, second check valve; 723, third check valve; 724, fourth check valve; 725, fifth check valve; 726, sixth check valve; 73, four-way reversing valve; 8, capillary tube; 91, first branch pipeline; 92, second branch pipeline; 93, third branch pipeline. DETAILED DESCRIPTION

[0027] The technical solutions of the present application will be described in detail below with reference to the drawings and specific embodiments, so that the advantages and features of the present application are more easily understood by those skilled in the art. Obviously, the embodiments described in the present application are only some of the embodiments of the present application, not all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the present application.

[0028] Reference Figure 1The energy storage temperature control system shown includes a heat supply module and a heat transfer module, the heat transfer module includes a first heat transfer component 11 for heat exchange with the energy storage battery 101, a second heat transfer component 12 for heat exchange with the energy storage converter 102. The first heat transfer component 11 and the second heat transfer component 12 each have a first port, a second port and a fluid channel communicating the first port and the second port. In this embodiment, the fluid channel of the first heat transfer component 11 has a shape such that the pressure difference when the fluid flows from the first port of the first heat transfer component 11 to the second port through the fluid channel is less than a predetermined value, thereby being able to control the pressure drop between the first port and the second port of the first heat transfer component 11. After the refrigerant is introduced into the fluid channel of the first heat transfer component 11, the size of the temperature difference between the first port and the second port of the refrigerant can be controlled, so that the temperature of the refrigerant in the fluid channel of the first heat transfer component 11 is uniform, and the heat exchange effect of the refrigerant with the energy storage battery 101 is better.

[0029] The heat supply module includes a gas compressor 2, a first heat exchanger 41 and an electronic expansion valve 61. The temperature control system has a cooling mode, in which the outlet of the gas compressor 2, the first heat exchanger 41, the electronic expansion valve 61, the first port of the first heat transfer component 11 are connected in sequence by pipelines to form a first cooling passage for supplying refrigerant to the first heat transfer component 11. The second port of the first heat transfer component 11 and the first port of the second heat transfer component 12 are connected by pipelines to form a second cooling passage for supplying refrigerant to the second heat transfer component 12. The second port of the second heat transfer component 12 and the inlet of the gas compressor 2 are connected in sequence by pipelines to form a cooling return passage for recovering refrigerant. The first cooling passage, the fluid channel in the first heat transfer component 11, the second cooling passage, the fluid channel in the second heat transfer component 12 and the cooling return passage constitute a cooling circulation passage. When the temperature of the energy storage battery 101 and the energy storage converter 102 is too high, the cooling circulation passage can be opened, and the heat supply module can simultaneously cool the energy storage battery 101 and the energy storage converter 102.

[0030] In this embodiment, the heat supply module further includes a gas-liquid separator 3 and a fluid storage tank 5, the outlet of the gas compressor 2, the first heat exchanger 41, the fluid storage tank 5, the first port of the first heat transfer component 11 are connected in sequence by pipelines to form a first cooling passage for supplying refrigerant to the first heat transfer component 11, the second port of the second heat transfer component 12, the gas-liquid separator 3, the inlet of the gas compressor 2 are connected in sequence by pipelines to form a cooling return passage for recovering refrigerant, and the electronic expansion valve 61 is located on the pipeline between the fluid storage tank 5 and the first port of the first heat transfer component 11. The refrigerant of this embodiment can be selected from one of R134a, R1234yf, R410A, R513A, R513B and R454B.

[0031] In the cooling circulation passage, the gas compressor 2 discharges the refrigerant in a high-temperature and high-pressure gaseous state, the first heat exchanger 41 cools the refrigerant flowing therethrough, the refrigerant continues to flow forward through the electronic expansion valve 62 and is converted into a gas-liquid two-phase state, the gas-liquid two-phase refrigerant flows into the fluid passage of the first heat transfer component 11 and exchanges heat with the energy storage battery 101, the refrigerant flowing out of the second port of the first heat transfer component 11 is still in a gas-liquid two-phase state, and after the refrigerant enters the second heat transfer component 12 from the first port of the second heat transfer component 12 and exchanges heat with the energy storage inverter 102, the refrigerant flowing out of the second port of the second heat transfer component 12 is converted into a gaseous state. The gaseous refrigerant flows through the gas-liquid separator 3 and flows back to the gas compressor 2.

[0032] In the embodiment, the energy storage battery 101 includes multiple groups, each group of the energy storage battery 101 is provided with a first heat transfer component 11, the first ports of the multiple first heat transfer components 11 are connected to each other, the second ports of the multiple first heat transfer components 11 are connected to each other, and the multiple first heat transfer components 11 are arranged in parallel with each other. In some preferred embodiments, liquid distributors are arranged at the interfaces of the first ports of the multiple first heat transfer components 11 and the interfaces of the second ports of the multiple first heat transfer components 11, for uniformly distributing the refrigerant into each first heat transfer component 11. In another embodiment, a distribution valve is arranged on each parallel pipeline formed between the multiple first heat transfer components 11, for controlling the flow of the refrigerant, thereby ensuring uniform distribution of the refrigerant.

[0033] The control module includes a controller, and the heat supply module is connected to and controlled by the controller. The temperature control system includes a solenoid valve assembly for controlling the opening and closing of the pipeline, and the controller is electrically connected to the solenoid valve assembly. The controller is configured to control the opening and closing and the opening degree of the solenoid valve, thereby controlling the opening and closing of the cooling circulation passage.

[0034] In the embodiment, the energy storage temperature control system also has a defrosting mode. When the external environment is low, the defrosting mode can be started to remove the frost condensed on the surface of the first heat exchanger 41. In the embodiment, the cooling circulation passage can be used for defrosting, and the first heat exchanger 41 has a fan for performing heat exchange treatment. When the defrosting mode is started, the fan of the first heat exchanger 41 is not started. Thus, when the refrigerant discharged from the gas compressor 2 in a high-temperature and high-pressure state flows through the first heat exchanger 41, the refrigerant exchanges heat with the frost condensed on the surface of the first heat exchanger 41, thereby achieving the effect of defrosting.

[0035] In the embodiment, referring to Figure 3As shown, the first cooling passage and the second cooling passage are connected by a first branch pipe 91, the first branch pipe 91 has a first connecting end and a second connecting end arranged at two ends, the first connecting end connects the pipe between the electronic expansion valve 61 and the first port of the first heat transfer component 11, and the second connecting end connects the second cooling passage. The electromagnetic valve assembly includes a first electromagnetic valve 711 and a second electromagnetic valve 712, the first electromagnetic valve 711 is arranged on the first branch pipe 91, and the second electromagnetic valve 712 is arranged on the pipe between the first connecting end and the first port of the first heat transfer component 11, or the second electromagnetic valve 712 is arranged on the pipe between the second connecting end and the second port of the first heat transfer component 11. When the first electromagnetic valve 711 is opened and the second electromagnetic valve 712 is closed, the outlet of the gas compressor 2, the first heat exchanger 41, the fluid storage tank 5, the electronic expansion valve 61, and the first port of the second heat transfer component 12 are sequentially connected by the pipe to form a PCS cooling passage for directly supplying refrigerant to the second heat transfer component 12, and the PCS cooling passage and the cooling return passage constitute a PCS cooling circulation passage. When the first electromagnetic valve 711 is closed and the second electromagnetic valve 712 is opened, the PCS cooling passage is closed, the first cooling passage and the second cooling passage are communicated, and the cooling circulation passage is opened.

[0036] When the energy storage battery 101 does not need to be cooled, the energy storage converter 102 can be cooled alone through the PCS cooling passage. In the PCS cooling circulation passage, the gas compressor 2 discharges refrigerant in a high-temperature and high-pressure gas state, the first heat exchanger 41 cools the refrigerant flowing therethrough, the refrigerant continues to flow forward through the electronic expansion valve 62, and then the refrigerant enters the second heat transfer component 12 from the first port of the second heat transfer component 12 and exchanges heat with the energy storage converter 102, so that the energy storage converter 102 is cooled, and the refrigerant flowing out of the second port of the second heat transfer component 12 is converted into a gas state. After the gas-state refrigerant flows through the gas-liquid separator 3, it flows back to the gas compressor 2.

[0037] In this embodiment, referring to Figure 2As shown, the heat supply module further comprises a circulating pump 62, an outlet of the circulating pump 62 is connected with the first port of the first heat transfer component 11 through a pipeline to form a circulating pump cooling passage for supplying refrigerant to the first heat transfer component 11; the second port of the second heat transfer component 12, the first heat exchanger 41 and the inlet of the circulating pump 62 are sequentially connected through pipelines to form a circulating pump return passage for recovering refrigerant; the circulating pump cooling passage, the second cooling passage and the circulating pump return passage constitute a circulating pump cooling circulation passage. Specifically, the second port of the second heat transfer component 12, the gas-liquid separator 3, the first heat exchanger 41, the fluid storage tank 5 and the inlet of the circulating pump 62 are connected to form the circulating pump return passage. In this embodiment, the circulating pump 62 is a fluorine pump, which can circulate refrigerant through the fluorine pump when the external environment temperature is low. Compared with using the gas compressor 2 for circulation, the fluorine pump has higher efficiency. At the same time, the fluorine pump has higher energy efficiency ratio, can more effectively utilize electric energy, reduce energy consumption, and can provide more stable temperature control and has better adaptability.

[0038] In this embodiment, the circulating pump 62 is arranged in parallel with the electronic expansion valve 61 through a first parallel branch, the first parallel branch has a first end portion and a second end portion arranged at two ends, the first end portion is connected with a pipeline between the electronic expansion valve 61 and the first heat exchanger 41, specifically, the first end portion is connected with a pipeline between the electronic expansion valve 61 and the fluid storage tank 5, the second end portion is connected with a pipeline between the electronic expansion valve 61 and the first port of the first heat transfer component 11, and the circulating pump 62 is arranged on the first parallel branch. In this embodiment, the outlet and the inlet of the gas compressor 2 are connected through a second parallel branch, the second parallel branch has a third end portion and a fourth end portion arranged at two ends, the third end portion is connected with a pipeline between the second port of the second heat transfer component 12 and the inlet of the gas compressor 2, specifically, the third end portion is connected with a pipeline between the gas-liquid separator 3 and the inlet of the gas compressor 2, and the fourth end portion is connected with a pipeline at the outlet of the gas compressor 2. The electromagnetic valve assembly comprises a third electromagnetic valve 713 arranged between the inlet of the gas compressor 2 and the third end portion, or arranged between the outlet of the gas compressor 2 and the fourth end portion. When the circulating pump 62 is opened and the third electromagnetic valve 713 is closed, the circulating pump circulation passage is connected and the cooling circulation passage is closed; when the circulating pump 62 is closed and the third electromagnetic valve 713 is opened, the cooling circulation passage is connected and the circulating pump cooling circulation passage is closed.

[0039] In this embodiment, a first one-way valve 721 is provided between the outlet of the circulating pump 62 and the second end, allowing refrigerant to flow unidirectionally from the circulating pump 62 to the second end. A second one-way valve 722 is provided on the second parallel branch, allowing refrigerant to flow unidirectionally from the third end to the fourth end. The first one-way valve 721 and the second one-way valve 722 are used to prevent refrigerant backflow. In this embodiment, a third one-way valve 723 is provided between the outlet of the gas compressor 2 and the fourth end, allowing refrigerant to flow unidirectionally from the gas compressor 2 to the fourth end, also to prevent refrigerant backflow.

[0040] In this embodiment, see Figure 4 As shown, the second solenoid valve 712 is installed on the pipeline between the second end of the first parallel branch and the first port of the first heat transfer component 11, or the second solenoid valve 712 is installed on the pipeline between the second connection end and the second port of the first heat transfer component 11. When the circulating pump 62 is open, the third solenoid valve 713 is closed, the first solenoid valve 711 is open, and the second solenoid valve 712 is closed, the outlet of the circulating pump 62 is connected to the second heat transfer component 12 through a pipeline, forming a circulating pump PCS cooling passage that directly supplies refrigerant to the second heat transfer component 12. The circulating pump PCS cooling passage and the circulating pump return passage constitute the circulating pump PCS cooling circulation passage. When the external ambient temperature is low and the energy storage battery 101 does not need to be cooled, the circulating pump 62 can drive the refrigerant to cool the energy storage converter 102.

[0041] In this embodiment, see Figure 5 As shown, the first cooling passage and the second cooling passage are connected by a second branch pipe 92. One end of the second branch pipe 92 is connected to the pipe between the first heat exchanger 41 and the electronic expansion valve 61. Specifically, one end of the second branch pipe 92 is connected to the pipe between the first heat exchanger 41 and the fluid storage tank 5, and the other end of the second branch pipe 92 is connected to the second cooling passage. The solenoid valve assembly includes a fourth solenoid valve 714 disposed on the second branch pipe. When the fourth solenoid valve 714 is open and the circulation pump 62 is open, a free cold circulation passage is formed between the circulation pump 62 and the first heat transfer component 11. Specifically, the circulation pump 62, the first heat transfer component 11, and the fluid storage tank 5 are connected by pipes to form a free cold circulation passage. When there is a temperature difference between multiple energy storage batteries 101, that is, when the temperatures of multiple energy storage batteries 101 are inconsistent, the refrigerant is driven by the circulation pump 62 to circulate in the free cold circulation passage, which can balance the temperature of multiple energy storage batteries 101.

[0042] In this embodiment, see Figure 6As shown, the heat supply module includes a second heat exchanger 42, and the temperature control system further has a heating mode. In the heating mode, the outlet of the gas compressor 2 is connected to the second heat exchanger 42 through a pipeline, the second heat exchanger 42 is connected to the second port of the first heat transfer component 11 through a pipeline, and the two pipelines are connected through a third branch pipeline 93. The third branch pipeline 93 has a first interface and a second interface arranged at two ends respectively. The first interface is connected to the pipeline between the gas compressor 2 and the second heat exchanger 42, and the second interface is connected to the pipeline between the second heat exchanger 42 and the second port of the first heat transfer component 11. The outlet of the gas compressor 2, the second heat exchanger 42 / third branch pipeline 93, and the second port of the first heat transfer component 11 are connected to form a heating passage for supplying refrigerant to the first heat transfer component 11. The first port of the first heat transfer component 11, the first heat exchanger 41, and the inlet of the gas compressor 2 are sequentially connected through pipelines to form a heating return passage for recovering refrigerant. Specifically, the first port of the first heat transfer component 11, the fluid storage tank 5, the first heat exchanger 41, the gas-liquid separator 3, and the inlet of the gas compressor 2 are sequentially connected to form the heating return passage. The heating passage, the fluid channel in the first heat transfer component 11, and the heating return passage constitute a heating circulation passage.

[0043] In the embodiment, the electromagnetic valve assembly includes a fifth electromagnetic valve 715 arranged between the first interface and the second heat exchanger 42. In the cooling mode, the fifth electromagnetic valve 715 is closed, and the second port of the second heat transfer component 12, the third branch pipeline 93, and the inlet of the gas compressor 2 are sequentially connected to form a cooling return passage. In the heating mode, the gas compressor 2 discharges high-temperature and high-pressure gaseous refrigerant, and the fifth electromagnetic valve 715 can be opened, so that part of the refrigerant discharged from the gas compressor 2 can directly flow to the second interface through the third branch pipeline 93, and the other part of the refrigerant discharged from the gas compressor 2 can flow through the second heat exchanger 42 for heat exchange treatment, so as to be converted from gaseous state to liquid state, and then flow to the second interface. At the second interface, the two parts of the refrigerant are combined together and form a gas-liquid two-phase state. The gas-liquid two-phase refrigerant flows into the first heat transfer component 11 from the second port and exchanges heat with the energy storage battery 101. The refrigerant flows out of the first port of the first heat transfer component 11, flows through the first heat exchanger 41 for heat exchange treatment and is converted into gaseous state. The gaseous refrigerant flows through the gas-liquid separator 3 and flows back to the gas compressor 2.

[0044] In the working of the energy storage system, the energy storage converter 102 usually does not need to be heated. In the embodiment, a fourth one-way valve 724 is arranged on the pipeline between the second port of the second heat transfer component 12 and the third branch pipeline 93, and specifically, the fourth one-way valve 724 is arranged between the second interface and the second port of the second heat transfer component 12, and the fourth one-way valve 724 is configured to allow the refrigerant to flow only in one direction from the second port of the second heat transfer component 12 to the third branch pipeline 93. In the cooling mode, the refrigerant that has completed heat exchange and cooling of the second heat transfer component 12 can pass through the fourth one-way valve 724 and flow from the third branch pipeline 93 to the gas-liquid separator 3. In the heating mode, the refrigerant is prevented from flowing to the second heat transfer component 12 by the fourth one-way valve 724, and thus cannot flow into the second heat transfer component 12.

[0045] In the embodiment, the second interface and the second cooling passage are connected through a third parallel branch, and the third parallel branch has a fifth end portion and a sixth end portion arranged at two ends, wherein the fifth end portion is connected to the pipeline between the fourth one-way valve 724 and the second interface, and the sixth end portion is connected to the second cooling passage, and a fifth one-way valve 725 is arranged on the third parallel branch, and the fifth one-way valve 725 is configured to allow the refrigerant to flow only in one direction from the fifth end portion to the sixth end portion. In the cooling mode, the third parallel branch is closed. In the heating mode, the third parallel branch is opened, and the outlet of the gas compressor 2, the second heat exchanger 42 / third branch pipeline 93, the third parallel branch, and the second port of the first heat transfer component 11 are connected and form a heating passage, and the refrigerant flowing at the second interface flows to the second port of the first heat transfer component 11 through the third parallel branch.

[0046] In the embodiment, the heat supply module further includes a capillary tube 8, and the capillary tube 8 is arranged in parallel with the electronic expansion valve 61 through a fourth parallel branch, and the fourth parallel branch has a seventh end portion and an eighth end portion arranged at two ends, wherein the seventh end portion is connected to the pipeline between the first heat exchanger 41 and the electronic expansion valve 61, and specifically, the seventh end portion is connected to the pipeline between the fluid storage tank 5 and the first end portion of the first parallel branch, and the eighth end portion is connected to the pipeline between the electronic expansion valve 61 and the first port of the first heat transfer component 11, and specifically, the eighth end portion is connected to the pipeline between the third one-way valve 723 and the first port of the first heat transfer component 11, and the capillary tube 8 is arranged on the fourth parallel branch. In the cooling cycle passage, the capillary tube 8 can play an auxiliary adjusting role, and is used to cooperate with the electronic expansion valve 61 to regulate the refrigerant, so that the refrigerant in the first heat transfer component 11 is in a gas-liquid two-phase state.

[0047] In this embodiment, the sixth one-way valve 726 is arranged between the capillary tube 8 and the eighth end portion, and only allows the refrigerant to flow from the seventh end portion to the eighth end portion. In the cooling cycle passage and the PCS cycle passage, the capillary tube 8 can assist the electronic expansion valve 61 to adjust. In the cooling cycle passage and the PCS cycle passage of the circulating pump, since the circulating pump 62 is turned on, the pressure at the outlet of the circulating pump 62 is greater than the pressure at the outlet, that is, the pressure at the second end portion of the first parallel branch is greater than the pressure at the first port, and the refrigerant can only flow from the high-pressure second end portion to the low-pressure first end portion. The sixth one-way valve 726 can prevent the flow of the refrigerant, thereby preventing the refrigerant from flowing back from the capillary tube 8. In the heating mode, since the sixth one-way valve 726 is arranged, the refrigerant will not flow through the capillary tube 8, and the capillary tube 8 does not play a role.

[0048] In this embodiment, the heat supply module includes a four-way reversing valve 73, which includes four interfaces, namely a first interface a, a second interface b, a third interface c, and a fourth interface d. The outlet of the gas compressor 2 is connected to the first interface a through a pipeline, the first heat exchanger 41 is connected to the second interface b through a pipeline, the gas-liquid separator 3 is connected to the third interface c through a pipeline, and the second heat exchanger 42 is connected to the fourth interface d through a pipeline. In the cooling mode, the first interface a is connected to the second interface b, and the third interface c is connected to the fourth interface d; in the heating mode, the first interface a is connected to the fourth interface d, and the second interface b is connected to the third interface c. In this embodiment, the four-way reversing valve 73 is electrically connected or communicatively connected to the controller, and the controller can control the four-way reversing valve 73 to switch.

[0049] When the temperature difference of the energy storage battery 101 is greater than t0, the controller controls the free cooling cycle passage to be opened, so as to balance the temperature of each energy storage battery 101. t0 is a predetermined temperature threshold, and 3℃≤t0≤5℃.

[0050] When the temperature of the energy storage battery 101 is lower than t1, the heating mode is started, the controller controls the heating cycle passage to be opened, and the refrigerant is used to heat the energy storage battery 101.

[0051] When the temperature of the energy storage battery 101 is higher than t2 but lower than t3, and the ambient temperature is higher than t4, the cooling mode is started, the controller controls the PCS cooling cycle passage to be opened, and the temperature control system only cools the energy storage inverter 102.

[0052] When the temperature of the energy storage battery 101 is higher than t3, and the ambient temperature is higher than t4, the cooling mode is started, the controller controls the cooling cycle passage to be opened, and the temperature control system cools the energy storage battery 101 and the energy storage inverter 102.

[0053] When the temperature of the energy storage battery 101 is higher than t2 and lower than t3, and the ambient temperature is lower than t4, the cooling mode is started, and the controller controls the circulation pump PCS cooling circulation passage to be opened, and the temperature control system cools the energy storage inverter 102 by using the circulation pump 62.

[0054] When the temperature of the energy storage battery 101 is higher than t3, and the ambient temperature is lower than t4, the cooling mode is started, and the controller controls the circulation pump cooling circulation passage to be opened, and the temperature control system cools the energy storage battery 101 and the energy storage inverter 102 by using the circulation pump 62. The above-mentioned t1, t2, t3 and t4 are all predetermined temperature thresholds, and t4 < t1 < t2 < t3. In some preferred embodiments, 30℃ ≤ t3 ≤ 35℃, 0℃ ≤ t4 ≤ 5℃, 15℃ ≤ t2 ≤ 30℃, and 10℃ ≤ t1 ≤ 15℃.

[0055] In the embodiment, the energy storage temperature control system comprises a pressure sensor arranged in the pipeline of the heat supply module, and the pressure sensor is electrically connected or signal connected with the controller. The pressure sensor comprises a first pressure sensor arranged at the inlet of the gas compressor 2 and a second pressure sensor arranged at the outlet of the gas compressor 2. The controller is electrically connected or signal connected with the gas compressor 2, the circulation pump 62 and the electronic expansion valve 61, and the controller can adjust the rotating speed of the gas compressor 2, the conveying speed of the circulation pump 62 and the opening degree of the electronic expansion valve 61 according to the detection value of the pressure sensor. Specifically, the first pressure sensor can obtain the pressure value P1 at the inlet of the gas compressor 2, and the second pressure sensor can obtain the pressure value P2 at the outlet of the gas compressor 2.

[0056] In the cooling mode, when the cooling circulation passage or the PCS circulation passage is opened, the temperature value T1 at the second port of the second heat transfer component 12 is obtained, and the saturated temperature Tp1 of the refrigerant corresponding to the pressure value P1 is compared with T1,

[0057] When Tp1 < T1, the rotating speed of the gas compressor 2 is reduced;

[0058] When Tp1 > T1, the rotating speed of the gas compressor 2 is increased.

[0059] In the cooling mode, when the circulation pump circulation passage or the circulation pump PCS circulation passage is opened, the temperature value T1 at the second port of the second heat transfer component 12 is also obtained, and the saturated temperature Tp1 of the refrigerant corresponding to the pressure value P1 is compared with T1,

[0060] When Tp1 < T1, the conveying speed of the circulation pump 62 is reduced;

[0061] When Tp1 > T1, the conveying speed of the circulation pump 62 is increased.

[0062] In the heating mode, the pressure value P2 at the outlet of the gas compressor is obtained, and the temperature T1' at the second port of the first heat transfer component 11 is obtained,

[0063] The saturation temperature Tp2 of the refrigerant at the pressure value P2 is compared with T1',

[0064] When Tp2 < T1', the speed of the gas compressor 2 is increased;

[0065] When Tp2 > T1', the speed of the gas compressor 2 is decreased.

[0066] In the embodiment, the energy storage temperature control system comprises a temperature sensor arranged in the pipeline of the heat supply module, and a controller electrically connected or communicatively connected with the temperature sensor. The controller can obtain and analyze data of the temperature sensor and the pressure sensor, and adjust the opening degree of the electronic expansion valve 61 and the opening and closing of the fifth electromagnetic valve according to the analysis result, so as to adjust the temperature or state of the refrigerant. The temperature sensor comprises a first temperature sensor arranged at the second port of the second heat transfer component 12. Specifically, the first temperature sensor is arranged between the second interface of the third branch pipeline 93 and the fifth end portion of the third parallel branch. In the cooling mode, the first temperature sensor can be used to detect the temperature value T1. In the heating mode, since the first temperature sensor is connected with the second port of the first heat transfer component 11 through the pipeline, and no other mechanism is arranged between the pipeline, the stable value detected by the first temperature sensor is the above-mentioned temperature value T1'. In this way, two different temperature values in two modes can be detected by the first temperature sensor, the number of temperature sensors is reduced, and resources and costs are saved.

[0067] In the embodiment, the temperature sensor comprises a second temperature sensor arranged at the inlet of the gas compressor 2, and the second temperature sensor is used to obtain the temperature T2 at the inlet of the gas compressor 2. In the cooling mode and the heating mode,

[0068] When T2-Tp1 > (Ta+db), the electronic expansion valve 61 is opened;

[0069] When T2-Tp1 < (Ta-db), the electronic expansion valve 61 is closed;

[0070] When (Ta-db) ≤ T2-Tp1 ≤ (Ta+db), the electronic expansion valve 61 is maintained;

[0071] Wherein, Ta is a predetermined temperature threshold, and db is an empirical parameter;

[0072] In the heating mode,

[0073] When T1'-Tp2 > Tb, the fifth electromagnetic valve 715 is opened;

[0074] When T1'-Tp2

[0075] Wherein, Tb, Tc are predetermined temperature thresholds, and Tb>Tc.

[0076] In the embodiment, the second heat exchanger 42 has a heat dissipation mechanism for heat exchange between the refrigerant and the ambient environment, the first heat exchanger 41 has an air inlet, the heat dissipation mechanism is arranged at the air inlet, and the heat dissipation mechanism is located on the air inlet path of the first heat exchanger 41. In this way, in the heating mode, the heat dissipated by the second heat exchanger 42 can enter the first heat exchanger 41 through the air inlet for secondary utilization, avoiding waste of energy.

[0077] In summary, the temperature control system of the embodiment can open the cooling circulation passage and cool the energy storage battery 101 and the energy storage converter 102 by controlling the opening and closing of the valve through the controller in the cooling mode. The PCS cooling circulation passage can also be opened to cool the energy storage converter 102 alone. When the ambient temperature is low, the circulation pump cooling circulation passage can be opened to cool the energy storage battery 101 and the energy storage converter 102 simultaneously by using the circulation pump 62. The circulation pump PCS cooling circulation passage can also be opened to cool the energy storage converter 102 alone by using the circulation pump 62. The thermal management system has a heating mode, in which the heating circulation passage is opened to heat the energy storage battery 101. When the temperature of the energy storage battery 101 is uneven, the free cooling circulation passage can be opened to eliminate the temperature difference of the energy storage battery 101 by using the circulation pump 62. The temperature control system is rich in functions and has high energy efficiency.

[0078] The above embodiments are only for illustrating the technical concept and characteristics of the present application, and the purpose is to enable those skilled in the art to understand the content of the present application and implement it, and cannot limit the protection scope of the present application. Any equivalent changes or modifications made according to the spirit and essence of the present application should be covered within the protection scope of the present application.

Claims

1. An energy storage temperature control system, comprising a heat supply module and a heat transfer module, characterized in that: The heat transfer module includes a first heat transfer component (11) for exchanging heat with the energy storage battery (101) and a second heat transfer component (12) for exchanging heat with the energy storage converter (102). The first heat transfer component (11) and the second heat transfer component (12) each have a first port, a second port and a fluid channel connecting the first port and the second port. The heat supply module includes a gas compressor (2), a first heat exchanger (41) and an electronic expansion valve (61). The energy storage temperature control system has a cooling mode. In the cooling mode, the outlet of the gas compressor (2), the first heat exchanger (41), the electronic expansion valve (61), and the first port of the first heat transfer component (11) are connected in sequence through pipelines to form a first cooling passage for supplying refrigerant to the first heat transfer component (11). The second port of the first heat transfer component (11) and the first port of the second heat transfer component (12) are connected through pipelines to form a second cooling passage for supplying refrigerant to the second heat transfer component (12). The second port of the second heat transfer component (12) and the inlet of the gas compressor (2) are connected through pipelines to form a cooling return passage for recovering refrigerant. The first cooling passage, the fluid channel of the first heat transfer component (11), the second cooling passage, the fluid channel of the second heat transfer component (12), and the cooling return passage constitute a cooling circulation passage. The energy storage temperature control system also includes a controller, and the heat supply module is connected to and controlled by the controller.

2. The energy storage temperature control system according to claim 1, characterized in that, A first branch pipe (91) is connected between the first cooling passage and the second cooling passage. The first branch pipe (91) has a first connection end and a second connection end located at both ends. The first connection end is connected to the pipe between the electronic expansion valve (61) and the first port of the first heat transfer component (11), and the second connection end is connected to the second cooling passage. The outlet of the gas compressor (2), the first heat exchanger (41), the electronic expansion valve (61), the first branch pipe (91), and the first port of the second heat transfer component (12) are connected in sequence through pipes to form a PCS cooling passage that directly supplies refrigerant to the second heat transfer component (12). The PCS cooling passage and the cooling return passage constitute a PCS cooling circulation passage. And / or, the heat supply module further includes a circulation pump (62), the outlet of which is connected to the first port of the first heat transfer component (11) via a pipeline to form a circulation pump cooling passage for supplying refrigerant to the first heat transfer component (11); the second port of the second heat transfer component (12), the first heat exchanger (41), and the inlet of the circulation pump (62) are connected in sequence via pipelines to form a circulation pump return passage for recovering refrigerant; the circulation pump cooling passage, the fluid channel of the first heat transfer component (11), the second cooling passage, the fluid channel of the second heat transfer component (12), and the circulation pump return passage constitute a circulation pump cooling circulation passage.

3. The energy storage temperature control system according to claim 2, characterized in that, The energy storage temperature control system has a PCS cooling circulation path. A first solenoid valve (711) is provided on the first branch pipe (91). A second solenoid valve (712) is provided on the pipe between the first connection end and the first port of the first heat transfer component (11). Alternatively, the second solenoid valve (712) is provided on the pipe between the second connection end and the second port of the first heat transfer component (11). The first solenoid valve (711) and the second solenoid valve (712) are respectively connected to the controller signal. When the first solenoid valve (711) is open and the second solenoid valve (712) is closed, the PCS cooling passage is connected and the PCS cooling circulation passage is opened; when the first solenoid valve (711) is closed and the second solenoid valve (712) is open, the PCS cooling passage is closed, the first cooling passage and the second cooling passage are connected and the cooling circulation passage is opened.

4. The energy storage temperature control system according to claim 2, characterized in that, The energy storage temperature control system has a circulating pump cooling circulation path, and the heat supply module has a first parallel branch. The first parallel branch has a first end and a second end located at both ends. The first end is connected to the pipeline between the electronic expansion valve (61) and the first heat exchanger (41), and the second end is connected to the pipeline between the electronic expansion valve (61) and the first port of the first heat transfer component (11). The circulating pump (62) is located on the first parallel branch. The heat supply module has a second parallel branch, which has a third end and a fourth end located at both ends. The third end is connected to the pipeline between the second port of the second heat transfer component (12) and the inlet of the gas compressor (2), and the fourth end is connected to the pipeline at the outlet of the gas compressor (2). The second port of the second heat transfer component (12), the second parallel branch, the first heat exchanger (41), and the inlet of the circulating pump (62) are connected in sequence through pipelines to form the circulation pump return path.

5. The energy storage temperature control system according to claim 4, characterized in that, A third solenoid valve (713) is provided between the inlet of the gas compressor (2) and the third end, or the third solenoid valve (713) is provided between the outlet of the gas compressor (2) and the fourth end, and the third solenoid valve (713) is signal-connected to the controller; When the circulating pump (62) is open, the electronic expansion valve (61) is closed, and the third solenoid valve (713) is closed, the cooling circulation path of the circulating pump is connected, and the cooling circulation path is closed; when the circulating pump (62) is closed, the electronic expansion valve (61) is open, and the third solenoid valve (713) is open, the cooling circulation path is connected, and the cooling circulation path of the circulating pump is closed.

6. The energy storage temperature control system according to claim 2, characterized in that, The energy storage temperature control system has a circulating pump cooling circulation path. A first branch pipe (91) is connected between the first cooling path and the second cooling path. The first branch pipe (91) has a first connection end and a second connection end located at both ends. The first connection end is connected to the pipe between the outlet of the circulating pump (62) and the first port of the first heat transfer component (11). The second connection end is connected to the second cooling path. The outlet of the circulating pump (62), the first branch pipe (91), and the first port of the second heat transfer component (12) are connected by pipes to form a circulating pump PCS cooling path that directly supplies refrigerant to the second heat transfer component (12). The circulating pump PCS cooling path and the circulating pump return path constitute the circulating pump PCS cooling circulation path.

7. The energy storage temperature control system according to claim 2, characterized in that, The energy storage temperature control system has a circulating pump cooling circulation path. A second branch pipe (92) is connected between the first cooling path and the second cooling path. One end of the second branch pipe (92) is connected to the pipe between the first heat exchanger (41) and the circulating pump (62), and the other end of the second branch pipe (92) is connected to the second cooling path. A fourth solenoid valve (714) is provided on the second branch pipe (92), and the fourth solenoid valve (714) is signal-connected to the controller. When the fourth solenoid valve (714) is opened and the circulating pump (62) is opened, a free cold circulation path is formed between the circulating pump (62) and the first heat transfer component (11).

8. The energy storage temperature control system according to claim 1, characterized in that, The heat supply module includes a second heat exchanger (42), and the temperature control system also has a heating mode. In the heating mode, the outlet of the gas compressor (2) is connected to the second heat exchanger (42), and the second heat exchanger (42) is connected to the second port of the first heat transfer component (11) through a pipeline. The two pipelines are connected through a third branch pipeline (93). The third branch pipeline (93) has a first interface and a second interface located at both ends. The first interface is connected to the pipeline between the gas compressor (2) and the second heat exchanger (42), and the second interface is connected to the pipeline between the second heat exchanger (42) and the second port of the first heat transfer component (11). The outlet of the gas compressor (2), the second heat exchanger (42) / third branch pipeline (93), and the second port of the first heat transfer component (11) are connected to form a heating path for supplying refrigerant to the first heat transfer component (11). The first port of the first heat transfer component (11), the first heat exchanger (41), and the inlet of the gas compressor (2) are connected in sequence through pipelines to form a heating return path for recovering refrigerant. The heating path, the fluid channel in the first heat transfer component (11), and the heating return path constitute a heating circulation path.

9. The energy storage temperature control system according to claim 8, characterized in that, A fifth solenoid valve (715) is provided between the first interface and the second heat exchanger (42), and the fifth solenoid valve (715) is signal-connected to the controller; the second interface and the second cooling passage are connected through a third parallel branch, and the third parallel branch has a fifth end and a sixth end located at both ends. The fifth end is connected to the pipeline between the second port of the second heat transfer component (12) and the second interface, and the sixth end is connected to the second cooling passage; in the cooling mode, the fifth solenoid valve (715) is closed, the third parallel branch is closed, and the second port of the second heat transfer component (12), the third branch pipeline (93), and the inlet of the gas compressor (2) are sequentially connected to form the cooling return path; In the heating mode, the fifth solenoid valve (715) can be closed, the third parallel branch is opened, and the outlet of the gas compressor (2), the second heat exchanger (42) / third branch pipe (93), the third parallel branch, and the second port of the first heat transfer component (11) are connected to form the heating passage.

10. The energy storage temperature control system according to claim 1, characterized in that, The heat supply module includes a capillary tube (8), which is connected in parallel with the electronic expansion valve (61) via a fourth parallel branch. The fourth parallel branch has a seventh end and an eighth end located at both ends. The seventh end is connected to the pipeline between the first heat exchanger (41) and the electronic expansion valve (61), and the eighth end is connected to the pipeline between the electronic expansion valve (61) and the first port of the first heat transfer component (11). The capillary tube (8) is located on the fourth parallel branch, and a sixth one-way valve (726) is provided between the capillary tube (8) and the eighth end. The sixth one-way valve (726) is configured to allow refrigerant to flow unidirectionally from the capillary tube (8) to the eighth end.

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