Liquid path unit, energy storage device and energy storage system

Abstract

The invention provides a liquid path unit, an energy storage device and an energy storage system, and relates to the technical field of energy storage. The liquid path unit is provided with a circulation input port and a circulation output port and comprises a plurality of heat management components, a first pipeline assembly, a second pipeline assembly, a first switch piece and a second switch piece. The heat management component is provided with an inlet and an outlet; the first pipeline assembly is communicated with the circulating input port and the inlet of each heat management component; the second pipeline assembly is communicated with the circulating output port and the outlet of each heat management component; the first switch piece is arranged on the first pipeline assembly and used for opening or closing the circulation input port. And the second switch piece is arranged on the second pipeline assembly and used for opening or closing the circulating output port, so that the heat exchange medium can be injected into the liquid path unit before the liquid path unit and the refrigerant unit are assembled, and the heat exchange medium can be conveniently injected. The first switch piece and the second switch piece can enable the liquid path unit to form a self-sealing system, so that the liquid path unit can store and transport the heat exchange medium.

Description

Technical Field

[0001] The present application relates to the field of energy storage technology, and in particular to a fluid circuit unit, an energy storage device and an energy storage system. Background Art

[0002] Under the background of vigorous development of power battery vehicles, the existing vehicle thermal management system, in which the power batteries are composed of hundreds or thousands of battery cells, the industry currently mainly adopts liquid cooling technology for such a large system thermal management solution. At present, there is a problem of difficulty in assembly due to the complexity of the system. Summary of the invention

[0003] The embodiments of the present application provide a fluid circuit unit, an energy storage device, and an energy storage system to improve the difficulty of assembly caused by the complexity of the energy storage system.

[0004] In the first aspect, an embodiment of the present application provides a liquid circuit unit, which has a circulation input port and a circulation output port, and the liquid circuit unit includes multiple thermal management components, a first pipeline assembly, a second pipeline assembly, a first switch element and a second switch element; the thermal management component has an inlet and an outlet; the first pipeline assembly connects the circulation input port and the inlet of each of the thermal management components; the second pipeline assembly connects the circulation output port and the outlet of each of the thermal management components; the first switch element is arranged on the first pipeline assembly, for opening or closing the circulation input port; the second switch element is arranged on the second pipeline assembly, for opening or closing the circulation output port.

[0005] In the above technical solution, the liquid circuit unit is provided with a first switch and a second switch. The first switch is provided in the first pipeline assembly to open or close the circulation input port of the liquid circuit unit; the second switch is provided in the second pipeline assembly to open or close the circulation output port of the liquid circuit unit. The first switch and the second switch are provided so that when the first switch closes the circulation input port and the second switch closes the circulation output port, the first switch and the second switch can seal the heat exchange medium in the passage formed by the first pipeline assembly, the thermal management component and the second pipeline assembly. Then, the heat exchange medium can be injected into the liquid circuit unit before the assembly of the liquid circuit unit and the refrigerant unit, so as to facilitate the injection of the heat exchange medium and thus facilitate the assembly of the energy storage device and the energy storage system equipped with the liquid circuit unit. The first switch and the second switch can make the liquid circuit unit form a self-enclosed system, so as to realize the storage and transportation of the heat exchange medium with the liquid circuit unit.

[0006] In some embodiments of the first aspect of the present application, the first switch component is a quick-insert stop valve, and the second switch component is a quick-insert stop valve.

[0007] In the above technical solution, the quick-insert stop valve can not only open or close the circulation output port and the circulation input port, but also be conveniently connected to the heat exchanger. The quick-insert stop valve has high integration, simple assembly and more cost advantages.

[0008] In some embodiments of the first aspect of the present application, the first pipeline assembly includes a first main pipe and a plurality of first branch pipes, one end of each of the first branch pipes is connected to the first main pipe, the other end of each of the first branch pipes is connected to an inlet of at least one of the thermal management components, and the first switch element is disposed on the first main pipe.

[0009] In the above technical solution, the first pipeline assembly includes a first main pipe and a plurality of first branch pipes, one end of each first branch pipe is connected to the inlet of at least one thermal management component, and the other end of each first branch pipe is connected to the first main pipe, so that each first pipeline assembly can manage the heat exchange medium in the plurality of thermal management components, which is conducive to improving the uniformity of the internal temperature of the liquid circuit unit. The first switch is arranged on the first main pipe, and by opening or closing the first switch, the channel in the first main pipe can be connected, thereby connecting the circulation input port and the plurality of first branch pipes, or the channel in the first main pipe can be cut off, thereby cutting off the circulation input port and the plurality of first branch pipes, which is convenient for the installation of the first switch.

[0010] In some embodiments of the first aspect of the present application, the liquid circuit unit also includes a second main pipe and a third switch component, the second main pipe is connected to each of the first branch pipes, the second main pipe is formed with an injection port for injecting heat exchange medium into each of the first branch pipes, and the third switch component is arranged on the second main pipe, and the third switch component is used to open or close the injection port.

[0011] In the above technical solution, the provision of the second main pipe facilitates the injection of heat exchange medium into each first branch, and the provision of the third switch element can reduce the risk of leakage after the heat exchange medium is injected.

[0012] In some embodiments of the first aspect of the present application, the liquid circuit unit includes a supply tank, which is connected to the first main pipe, and the supply tank is used to replenish heat exchange medium to each of the first branch pipes.

[0013] In the above technical solution, the supply tank can replenish the heat exchange medium in time after the amount of heat exchange medium in the first branch pipe decreases, so that the amount of heat exchange medium in the first pipeline assembly, the thermal management component and the second pipeline assembly is always constant, so that the liquid circuit unit maintains a stable temperature regulation capability.

[0014] In some embodiments of the first aspect of the present application, at least part of the first branch pipes is provided with at least one fourth switch element, and the fourth switch element is used to connect the first main pipe and the thermal management component or disconnect the first main pipe and the thermal management component.

[0015] In the above technical solution, the provision of the fourth switch element facilitates the independent control of the corresponding first branch pipes, thereby facilitating the independent management of each first branch pipe, making the working mode of the liquid circuit assembly more flexible.

[0016] In some embodiments of the first aspect of the present application, each of the first branch pipes is provided with two fourth switch members.

[0017] In the above technical solution, each first branch pipe is provided with two fourth switch members, which not only facilitates the independent control of each first branch pipe, but also enables each first branch pipe to be controlled in sections, which is convenient for repairing and replacing the section where the first branch pipe fails, reducing consumables and reducing costs.

[0018] In some embodiments of the first aspect of the present application, at least part of the first branch pipe is connected to a second branch pipe, a first opening is formed at one end of the second branch pipe, and the first branch pipe is provided with a fifth switch element, and the fifth switch element is used to connect the first opening and the first branch pipe or cut off the first opening and the first branch pipe.

[0019] In the above technical solution, the second branch pipe is provided to facilitate independent discharge of the heat exchange medium in the first branch pipe without affecting other first branch pipes, thereby facilitating independent management of the first straight pipe and making the working mode of the liquid circuit assembly more flexible.

[0020] In some embodiments of the first aspect of the present application, each of the first branch pipes is connected to the second branch pipe.

[0021] In the above technical solution, each first branch pipe is connected to a second branch pipe, and the heat exchange medium in each first branch pipe is discharged independently without affecting other first branch pipes, thereby facilitating the independent management of each first straight pipe and making the working mode of the liquid circuit component more flexible.

[0022] In some embodiments of the first aspect of the present application, the second pipeline assembly includes a third main pipe and a plurality of third branch pipes, one end of each of the third branch pipes is connected to the third main pipe, and the other end of each of the third branch pipes is connected to an outlet of at least one of the thermal management components.

[0023] In the above technical solution, the second pipeline assembly includes a third main pipe and multiple third branch pipes, and the other end of each third branch pipe is connected to the outlet of at least one thermal management component. In this way, each second pipeline assembly can manage the heat exchange medium in multiple thermal management components, which is beneficial to improving the uniformity of the internal temperature of the liquid circuit unit.

[0024] In some embodiments of the first aspect of the present application, the liquid circuit unit also includes a fourth main pipe and a sixth switch, the fourth main pipe is connected to each of the third branches, the fourth main pipe is formed with a first exhaust port for exhausting gas in the second pipeline assembly, and the sixth switch is used to open or close the first exhaust port.

[0025] In the above technical solution, the fourth main pipe is provided to facilitate the discharge of gas in each third branch pipe, so that the heat exchange medium can fill the entire first pipeline assembly, the second pipeline assembly and the thermal management component, so that the liquid circuit assembly has a better temperature regulation ability. The sixth switch can reduce the risk of leakage of the heat exchange medium.

[0026] In some embodiments of the first aspect of the present application, the liquid circuit unit also includes a fifth main pipe and a seventh switch, at least part of the third branch pipe is connected to the fifth main pipe, the fifth main pipe is formed with a second exhaust port for exhausting gas in the first pipeline assembly and the thermal management component, and the seventh switch is used to open or close the second exhaust port.

[0027] In the above technical solution, the setting of the fifth main pipe facilitates the discharge of gas into the first pipeline assembly and the thermal management component, so that the heat exchange medium can fill the entire first pipeline assembly and the thermal management component, so that the liquid circuit assembly has a better temperature regulation ability. The setting of the seventh switch can reduce the risk of leakage of the heat exchange medium.

[0028] In some embodiments of the first aspect of the present application, at least part of the third branch pipe is provided with at least one eighth switch element, and the eighth switch element is used to connect the third main pipe and the thermal management component or disconnect the third main pipe and the thermal management component.

[0029] In the above technical solution, the provision of the eighth switch element facilitates the independent control of the corresponding third branch pipes, thereby facilitating the independent management of each third branch pipe, making the working mode of the liquid circuit assembly more flexible.

[0030] In some embodiments of the first aspect of the present application, each of the third branches is provided with two of the eighth switch members.

[0031] In the above technical solution, each third branch pipe is provided with two eighth switch members, which not only facilitates the independent control of each third branch pipe, but also enables each third branch pipe to be controlled in sections, which is convenient for repairing and replacing the section where the third branch pipe fails, reducing consumables and reducing costs.

[0032] In some embodiments of the first aspect of the present application, at least part of the third branch is connected to a fourth branch, a second opening is formed at one end of the fourth branch, and the fourth branch is provided with a ninth switch element, and the ninth switch element is used to connect the second opening and the third branch or cut off the second opening and the third branch.

[0033] In the above technical solution, the fourth branch pipe is provided to facilitate the independent discharge of the heat exchange medium in the corresponding third branch pipe without affecting other third branch pipes, thereby facilitating the independent management of the third branch pipe and making the working mode of the liquid circuit assembly more flexible. The ninth switch reduces the risk of heat exchange medium leaking from the fourth branch pipe when the pipeline is normal.

[0034] In some embodiments of the first aspect of the present application, each of the third branches is connected to the fourth branch.

[0035] In the above technical solution, each third branch is connected to a fourth branch, and the heat exchange medium in each third branch is discharged independently without affecting other third branches, thereby facilitating the independent management of each third branch and making the working mode of the liquid circuit component more flexible.

[0036] In some embodiments of the first aspect of the present application, the liquid circuit unit further includes a pumping device, and the pumping device is used to pump the heat exchange medium in the first pipeline assembly to the thermal management component.

[0037] In the above technical solution, before the heat exchangers of the liquid circuit unit and the refrigerant unit form a liquid circuit circulation loop, the pumping device can make the heat exchange medium quickly fill the first pipeline assembly, each thermal management component and the second pipeline assembly, thereby improving the heat exchange medium injection efficiency. After the heat exchangers of the liquid circuit unit and the refrigerant unit form a liquid circuit circulation loop, the pumping device is conducive to the heat exchange medium always maintaining a flowing state in the first management component, the thermal management component and the second pipeline assembly, thereby improving the temperature regulation capability.

[0038] In some embodiments of the first aspect of the present application, the first pipeline assembly includes a first main pipe and a plurality of first branch pipes, one end of each of the first branch pipes is connected to the first main pipe, and the other end of each of the first branch pipes is connected to the input end of at least one of the thermal management components; each of the first branch pipes is provided with the pumping device.

[0039] In the above technical solution, each first branch pipe is provided with a pumping device. Before the heat exchangers of the liquid circuit unit and the refrigerant unit form a liquid circuit circulation loop, the pumping device can quickly fill the first pipeline assembly, each thermal management component and the second pipeline assembly with heat exchange medium, thereby improving the efficiency of heat exchange medium injection. The uniformity of heat exchange medium distribution is improved. After the heat exchangers of the liquid circuit unit and the refrigerant unit form a liquid circuit circulation loop, the pumping device is conducive to the heat exchange medium always maintaining a flowing state in the first management component, the thermal management component and the second pipeline assembly, thereby improving the temperature regulation capability.

[0040] In some embodiments, the first pipeline assembly includes a first main pipe and a plurality of first branch pipes, one end of each of the first branch pipes is connected to the first main pipe, and the other end of each of the first branch pipes is connected to an input end of at least one of the thermal management components; the pumping device is disposed on the first main pipe.

[0041] In the above technical solution, the pumping device is arranged on the first main pipe, and a pumping device can be arranged to provide power for the circulation of the heat exchange medium of each first branch pipe, which can reduce the number of pumping devices of the liquid circuit unit and save costs. In the embodiment in which the liquid circuit unit is arranged in the box of the energy storage device, the fewer the number of pumping devices, the less internal space of the box is occupied, which is conducive to improving the energy density of the energy storage device.

[0042] In some embodiments of the first aspect of the present application, the liquid circuit unit further includes a first temperature detection component, and the first temperature detection component is used to detect the temperature of the heat exchange medium in the first pipeline assembly.

[0043] In the above technical solution, the temperature of the heat exchange medium in the first pipeline assembly is detected by the first temperature detection component, which facilitates the temperature of the heat exchange medium in the first pipeline assembly to be grasped and facilitates more accurate temperature regulation of the battery cell.

[0044] In some embodiments of the first aspect of the present application, the liquid circuit unit further includes a second temperature detection component, and the second temperature detection component is used to detect the temperature of the heat exchange medium in the second pipeline assembly.

[0045] In the above technical solution, the temperature of the heat exchange medium in the second pipeline assembly is detected by the second temperature detection member, which facilitates the temperature of the heat exchange medium in the second pipeline assembly to be grasped and facilitates more accurate temperature regulation of the battery cell.

[0046] In a second aspect, an embodiment of the present application provides an energy storage device, which includes a box, a battery cell and a fluid circuit unit provided in any of the above embodiments; the battery cell is accommodated in the box; the fluid circuit unit is arranged in the box, and the thermal management component is used to adjust the temperature of the battery cell.

[0047] In the above technical solution, the liquid circuit unit in any of the above embodiments is provided with a first switch and a second switch. The first switch is provided in the first pipeline assembly to open or close the circulation input port of the liquid circuit unit; the second switch is provided in the second pipeline assembly to open or close the circulation output port of the liquid circuit unit. The first switch and the second switch are provided so that when the first switch closes the circulation input port and the second switch closes the circulation output port, the first switch and the second switch can seal the heat exchange medium in the passage formed by the first pipeline assembly, the thermal management component and the second pipeline assembly, and the heat exchange medium can be injected into the liquid circuit unit before the liquid circuit unit and the refrigerant unit are assembled, so as to facilitate the injection of the heat exchange medium and thus facilitate the assembly of the energy storage device.

[0048] In a third aspect, an embodiment of the present application provides an energy storage system, which includes: a refrigerant unit and an energy storage device provided by any of the above embodiments, the refrigerant unit includes a heat exchanger; the circulation output port and the circulation input port are both connected to the heat exchanger.

[0049] In the above technical solution, the refrigerant unit and the energy storage device provided in the above embodiment can be separately arranged and then connected into an integral structure, which is convenient for assembling the energy storage system. In addition, the energy storage device in the above embodiment can inject the heat exchange medium into the liquid circuit unit before assembling the liquid circuit unit and the refrigerant unit, which is convenient for injecting the heat exchange medium, thereby facilitating the assembly of the energy storage system.

[0050] In some embodiments of the third aspect of the present application, the refrigerant unit is disposed outside the box.

[0051] In the above technical solution, the refrigerant unit is arranged outside the box of the energy storage device, which can make more space inside the box of the energy storage device for accommodating battery cells, which is beneficial to improve the energy density of the battery cells.

[0052] In some embodiments of the third aspect of the present application, the energy storage system includes a plurality of the energy storage devices, and the circulation output port and the circulation input port of each of the energy storage devices are detachably connected to the heat exchanger.

[0053] In the above technical solution, the circulation output port and the circulation input port of each of the multiple energy storage devices are detachably connected to the heat exchanger, so the refrigerant unit can synchronously exchange heat with the multiple energy storage devices, improve the heat exchange efficiency, and save costs. The circulation output port and the circulation input port are detachably connected to the heat exchanger, which is convenient for the assembly or disassembly of the refrigerant unit and the energy storage device, and also convenient for the maintenance and replacement of the energy storage system.

[0054] In a fourth aspect, an embodiment of the present application further provides a refrigerant system, comprising a condenser, a compressor, a heat exchanger and an energy storage device provided according to the second aspect, wherein the output end of the compressor is connected to the input end of the condenser; the heat exchanger has a first pair of interfaces and a second pair of interfaces, the first pair of interfaces is used to connect to the input end of the compressor, and the second pair of interfaces is used to connect to the output end of the condenser; the circulation output port and the circulation input port are both connected to the heat exchanger.

[0055] In the above technical solution, the condenser, compressor, heat exchanger and energy storage device provided in the above embodiment can be separately arranged and then connected into an integral structure, which is convenient for the assembly of the refrigerant system. In addition, the energy storage device in the above embodiment can realize the injection of heat exchange medium into the liquid circuit unit before the assembly of the liquid circuit unit, heat exchanger, condenser and compressor, which is convenient for the injection of heat exchange medium and thus facilitates the assembly of the refrigerant system. BRIEF DESCRIPTION OF THE DRAWINGS

[0056] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings required for use in the embodiments will be briefly introduced below. It should be understood that the following drawings only show certain embodiments of the present application and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other related drawings can be obtained based on these drawings without paying creative work.

[0057] Figure 1 A schematic diagram of an energy storage system provided in some embodiments of the present application;

[0058] Figure 2 for Figure 1 Schematic diagram of the intermediate refrigerant unit;

[0059] Figure 3 for Figure 1 Schematic diagram of the energy storage device in;

[0060] Figure 4 Schematic diagram of energy storage devices provided in other embodiments of the present application.

[0061] Icons: 100-energy storage system; 10-refrigeration unit; 11-heat exchanger; 111-first pair of interfaces; 112-second pair of interfaces; 113-third pair of interfaces; 114-fourth pair of interfaces; 12-compressor; 121-input end of compressor; 122-output end of compressor; 13-condenser; 131-input end of condenser; 132-output end of condenser; 14-first connecting pipe; 15-second connecting pipe; 16-third connecting pipe; 20-energy storage device; 21-liquid circuit unit; 21a-circulation input port; 21b-circulation output port; 22-box; 23-battery monomer; 24-thermal management component; 241-inlet; 242-outlet; 25-first pipeline assembly; 251-first main pipe; 2511-first switch valve; 252-first branch pipe; 25 3-the fourth switch piece; 254-the second branch pipe; 2541-the first opening; 255-the fifth switch piece; 26-the second pipeline assembly; 261-the third main pipe; 2611-the second switch valve; 262-the third branch pipe; 263-the eighth switch piece; 264-the fourth branch pipe; 2641-the second opening; 265-the ninth switch piece; 27-the first switch piece; 28-the second switch piece; 29-the second main pipe; 291-the injection port; 210-the third switch piece; 220-the fourth main pipe; 2201-the first exhaust port; 230-the sixth switch piece; 240-the fifth main pipe; 2401-the second exhaust port; 250-the seventh switch piece; 260-the pumping device; 270-the first temperature detection piece; 280-the second temperature detection piece; 290-the third temperature detection piece; Q-the supply tank. DETAILED DESCRIPTION

[0062] In order to make the purpose, technical solution and advantages of the embodiments of the present application clearer, the technical solution in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, rather than all the embodiments. The components of the embodiments of the present application described and shown in the drawings here can be arranged and designed in various different configurations.

[0063] Therefore, the following detailed description of the embodiments of the present application provided in the accompanying drawings is not intended to limit the scope of the present application for which protection is sought, but merely represents selected embodiments of the present application. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in the field without creative work are within the scope of protection of the present application.

[0064] It should be noted that, in the absence of conflict, the embodiments and features in the embodiments of the present application may be combined with each other.

[0065] It should be noted that similar reference numerals and letters denote similar items in the following drawings, and therefore, once an item is defined in one drawing, further definition and explanation thereof is not required in subsequent drawings.

[0066] In the description of the embodiments of the present application, it should be noted that the indicated orientation or positional relationship is based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship in which the product of the application is usually placed when in use, or the orientation or positional relationship commonly understood by those skilled in the art, which is only for the convenience of describing the present application and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present application. In addition, the terms "first", "second", "third", etc. are only used to distinguish the description and cannot be understood as indicating or implying relative importance.

[0067] At present, from the perspective of market development, the application of batteries is becoming more and more extensive. Batteries are not only used in energy storage power systems such as hydropower, thermal power, wind power and solar power stations, but also widely used in electric vehicles such as electric bicycles, electric motorcycles, electric cars, as well as military equipment and aerospace and other fields. With the continuous expansion of battery application areas, its market demand is also constantly expanding.

[0068] Power batteries are generally formed by connecting multiple battery cells in series, parallel or hybrid to form a high-power battery. With the vigorous development of power batteries in the automotive industry, the energy storage requirements for power batteries are getting higher and higher, which requires power batteries to have more battery cells. The more battery cells there are, the more difficult it is to manage heat.

[0069] Therefore, an energy storage system has emerged, which includes at least one energy storage device and a refrigerant unit. The energy storage device includes a liquid circuit unit and a battery cell. The liquid circuit unit is used to adjust the temperature of the battery cell. The refrigerant unit is used to exchange heat with the liquid circuit unit, thereby taking away the heat of the battery cell taken away by the liquid circuit component, thereby reducing the temperature of the battery cell and achieving temperature management of the battery cell. However, the refrigerant unit and the liquid circuit unit in the related art are an integrated structure, which makes the energy storage system more complicated and inconvenient to transport and assemble.

[0070] Based on the above considerations, in order to improve the problem of difficulty in assembly due to the complexity of the energy storage system, the present application provides a liquid circuit unit, the liquid circuit unit has a circulation input port and a circulation output port, the liquid circuit unit includes multiple thermal management components, a first pipeline assembly, a second pipeline assembly, a first switch component and a second switch component; the thermal management component has an inlet and an outlet; the first pipeline assembly connects the circulation input port and the inlet of each thermal management component; the second pipeline assembly connects the circulation output port and the outlet of each thermal management component; the first switch component is arranged on the first pipeline assembly, for opening or closing the circulation input port; the second switch component is arranged on the second pipeline assembly, for opening or closing the circulation output port.

[0071] The liquid circuit unit is provided with a first switch and a second switch. The first switch is provided on the first pipeline assembly and is used to open or close the circulation input port of the liquid circuit unit; the second switch is provided on the second pipeline assembly and is used to open or close the circulation output port of the liquid circuit unit. The first switch and the second switch are provided so that when the first switch closes the circulation input port and the second switch closes the circulation output port, the first switch and the second switch can seal the heat exchange medium in the passage formed by the first pipeline assembly, the thermal management component and the second pipeline assembly, so that the heat exchange medium can be injected into the liquid circuit unit before the liquid circuit unit and the refrigerant unit are assembled.

[0072] like Figure 1 , Figure 2 As shown, an embodiment of the present application provides an energy storage system 100, which includes a refrigerant unit 10 and an energy storage device 20. The refrigerant unit 10 is used to carry away the temperature of the energy storage device 20 so as to reduce the temperature inside the energy storage device 20. The energy storage device 20 includes a liquid circuit unit 21, and the refrigerant unit 10 is used to exchange heat with the liquid circuit unit 21, so as to reduce the temperature inside the energy storage device 20.

[0073] The refrigerant unit 10 may be disposed outside the energy storage device 20 .

[0074] like Figure 1 , Figure 2 As shown, in some embodiments, the refrigerant unit 10 includes a heat exchanger 11 , a compressor 12 and a condenser 13 .

[0075] The heat exchanger 11 is a component for performing heat exchange between the refrigerant in the refrigerant unit 10 and the heat exchange medium in the fluid circuit unit 21 .

[0076] The types of refrigerant of the refrigerant unit 10 include, but are not limited to, Freon, alkane, ammonia, and carbon dioxide.

[0077] like Figure 1 , Figure 2As shown, the heat exchanger 11 has a first docking port 111, a second docking port 112, a third docking port 113 and a fourth docking port 114. The first docking port 111 and the second docking port 112 are connected through a first channel (not shown in the figure) inside the heat exchanger 11, and the first channel is used for the refrigerant flowing through the refrigerant unit 10. The third docking port 113 and the fourth docking port 114 are connected through a second channel (not shown in the figure) inside the heat exchanger 11, and the second channel is used for the heat exchange medium flowing through the liquid circuit unit 21. The first channel and the second channel are independent of each other. When the heat exchange medium of the liquid circuit unit 21 flows through the second channel, heat exchange occurs with the refrigerant of the refrigerant unit 10 passing through the first channel, so that the refrigerant in the first channel can take away the heat of the heat exchange medium in the second channel, thereby realizing heat exchange between the refrigerant unit 10 and the liquid circuit unit 21, and reducing the temperature inside the energy storage device 20.

[0078] The input end 121 of the compressor is used for supplying refrigerant into the compressor 12, and the output end 122 of the compressor is used for supplying refrigerant out of the compressor 12. The output end 132 of the condenser is used for supplying refrigerant into the condenser 13, and the output end 132 of the condenser is used for supplying refrigerant out of the condenser 13.

[0079] The first port 111 is used to communicate with the input end 121 of the compressor. Figure 1 , Figure 2 As shown, the first docking port 111 is used to communicate with the input end 121 of the compressor through the first connecting pipe 14 .

[0080] The output end 122 of the compressor is used to communicate with the input end 131 of the condenser. Figure 1 , Figure 2 As shown, the output end 122 of the compressor is used to communicate with the input end 131 of the condenser through the second connecting pipe 15.

[0081] The output end 132 of the condenser is used to communicate with the second docking port 112. Figure 1 , Figure 2 As shown, the output end 132 of the condenser is used to communicate with the second docking port 112 through the third connecting pipe 16 .

[0082] The passage where the first channel, the first connecting pipe 14 , the compressor 12 , the second connecting pipe 15 , the condenser 13 , and the third connecting pipe 16 are located forms a refrigerant circuit of the refrigerant unit 10 .

[0083] The compressor 12 can compress and drive the refrigerant in the refrigerant circuit. The compressor 12 can convert the high-temperature and low-pressure refrigerant into the high-temperature and high-pressure refrigerant.

[0084] The condenser 13 is used to release the heat of the high-temperature and high-pressure refrigerant from the compressor 12 and discharge the low-temperature and low-pressure refrigerant.

[0085] The specific working principle of the refrigerant unit 10 is as follows: the refrigerant in the first channel forms a high-temperature and low-pressure gaseous refrigerant after heat exchange with the heat exchange medium in the second channel of the heat exchanger 11. The high-temperature and low-pressure refrigerant is discharged from the heat exchanger 11 from the first docking port 111 of the heat exchanger 11 and enters the compressor 12 through the first connecting pipe 14. The compressor 12 drives the gaseous, high-temperature and low-pressure refrigerant to form a high-temperature and high-pressure liquid refrigerant or a high-temperature and high-pressure gas-liquid two-phase refrigerant. The compressor 12 then drives the high-temperature and high-pressure refrigerant to the condenser 13, releases heat through the condenser 13, forms a low-temperature and high-pressure liquid refrigerant, and returns to the first channel again through the third connecting pipe 16 and the second docking port 112, thereby continuing the heat exchange with the heat exchange medium in the second channel.

[0086] The third docking port 113 of the heat exchanger 11 of the refrigerant unit 10 is used to communicate with the circulation output port 21 b of the liquid circuit unit 21 , and the fourth docking port 114 of the heat exchanger 11 of the refrigerant unit 10 is used to communicate with the circulation input port 21 a of the liquid circuit unit 21 .

[0087] The number of refrigerant units 10 may be one or more. More than one means two or more. In the embodiment where the number of refrigerant units 10 is more than one, the third docking port 113 of each refrigerant unit 10 is connected to the circulation output port 21b of the liquid circuit unit 21, and the fourth docking port 114 of each refrigerant unit 10 is connected to the circulation input port 21a of the liquid circuit unit 21.

[0088] The circulation output port 21b of the liquid circuit unit 21 is connected to the third docking port 113, and after the circulation input port 21a of the liquid circuit unit 21 is connected to the first docking port, the second channel and the liquid circuit unit 21 together form a liquid loop. The heat exchange medium in the liquid circuit unit 21 is discharged from the circulation output port 21b and enters the second channel, passes through the second channel, and then enters the liquid circuit unit 21 from the circulation input port 21a. Figure 3 , Figure 4 The hollow arrow in the figure indicates the flow direction of the heat exchange medium. The heat exchange medium can be water, air, etc.

[0089] like Figure 1 , Figure 3 , Figure 4 As shown, in some embodiments, the energy storage device 20 further includes a box 22 and a battery cell 23 ; the battery cell 23 is accommodated in the box 22 ; the fluid circuit unit 21 is disposed in the box 22 , and the thermal management component 24 is used to adjust the temperature of the battery cell 23 .

[0090] The energy storage device 20 may be an energy storage cabinet or an energy storage container. The box 22 of the energy storage device 20 may also be referred to as a prefabricated cabin, a battery cabin, a container, etc. The box 22 may contain a plurality of battery cells 23, and the plurality of battery cells 23 may be connected in series, in parallel, or in mixed connection. Mixed connection means that the plurality of battery cells 23 are both connected in series and in parallel. The box 22 may also contain a battery module formed by a plurality of battery cells 23, and the plurality of battery modules may be connected in series, in parallel, or in mixed connection. The box 22 may also contain a plurality of battery packs composed of battery cells 23. The box 22 may include a plurality of rows of battery modules, and a row of battery modules may be referred to as a battery cluster, and each battery module includes a plurality of battery cells connected in series, in parallel, or in mixed connection. It is understandable that a plurality of battery clusters may be provided in the box 22. The box 22 may also include one or more battery cabinets, and each battery cabinet includes a cabinet and a battery cluster.

[0091] The liquid circuit unit 21 is arranged in the box 22 of the energy storage device 20. The liquid circuit unit 21 is used to adjust the temperature of the battery cell 23, such as lowering the temperature of the battery cell 23, reducing the risk of explosion and fire of the energy storage device 20, so that the energy storage device 20 can supply energy normally and improve the reliability of the energy storage system 100.

[0092] like Figure 1 , Figure 3 , Figure 4 As shown, in some embodiments, the liquid circuit unit 21 has a circulation input port 21a and a circulation output port 21b, and the liquid circuit unit 21 includes multiple thermal management components 24, a first pipeline assembly 25, a second pipeline assembly 26, a first switch 27 and a second switch 28; the thermal management component 24 has an inlet 241 and an outlet 242; the first pipeline assembly 25 connects the circulation input port 21a and the inlet 241 of each thermal management component 24; the second pipeline assembly 26 connects the circulation output port 21b and the outlet 242 of each thermal management component 24; the first switch 27 is arranged on the first pipeline assembly 25, for opening or closing the circulation input port 21a; the second switch 28 is arranged on the second pipeline assembly 26, for opening or closing the circulation output port 21b.

[0093] The circulation input port 21a of the liquid circuit unit 21 is the input end for the heat exchange medium to enter the liquid circuit unit 21 during the circulation process, and the circulation output port 21b of the liquid circuit unit 21 is the output end for the heat exchange medium to be discharged from the liquid circuit unit 21 during the circulation process. The circulation input port 21a can be formed at one end of the first pipeline assembly 25 away from the thermal management component 24. The circulation output port 21b can be formed at one end of the second pipeline assembly 26 away from the thermal management component 24.

[0094] The thermal management component 24 is used for heat exchange with the battery cell 23. A channel for heat exchange medium to flow is formed inside the thermal management component 24. The inlet 241 is an end where the heat exchange medium enters the internal channel of the thermal management component 24, and the outlet 242 is an end where the heat exchange medium is discharged from the internal channel of the thermal management component 24.

[0095] The thermal management component 24 may also be referred to as a water cooling plate, a liquid cooling plate, a heat exchange plate, a temperature regulating plate, etc. The heat exchange medium may be water, air, a mixture of water and ethylene glycol, a refrigerant, a phase change material, etc.

[0096] The first switch 27 can be arranged in the middle area of ​​the first pipeline assembly 25. The first switch 27 can cut off the internal passage of the first pipeline assembly 25, so that when the first switch 27 is closed, the passage between the circulation input port 21a and the thermal management component 24 is cut off, and the heat exchange medium cannot flow to the thermal management component 24 through the first pipeline assembly 25 after passing through the circulation input port 21a. When the first switch 27 is opened, the heat exchange medium can flow to the thermal management component 24 through the first pipeline assembly 25 after passing through the circulation input port 21a. The first switch 27 arranged in the middle area of ​​the first pipeline assembly 25 mentioned here is not limited to the first switch 27 being arranged in the middle position of the extension direction of the first pipeline assembly 25, and can also be arranged near the position where the circulation input port 21a is formed in the first pipeline assembly 25.

[0097] The second switch 28 can be arranged in the middle area of ​​the second pipeline assembly 26. The second switch 28 can cut off the internal passage of the second pipeline assembly 26, so that when the second switch 28 is closed, the passage between the circulation output port 21b and the thermal management component 24 is cut off, and the heat exchange medium cannot be discharged from the liquid circuit unit 21 from the circulation output port 21b after being discharged from the thermal management component 24. When the first switch 27 is opened, the heat exchange medium can be discharged from the liquid circuit unit 21 from the circulation input port 21a after being discharged from the thermal management component 24.

[0098] The first switch component 27 can be a solenoid valve, a stop valve, a manual switch component, a one-way valve, etc. The second switch component 28 can be a solenoid valve, a stop valve, a manual switch component, etc. The structures of the first switch component 27 and the second switch component 28 can be the same or different. The first switch component 27 can also be used as a connecting component between the circulation input port 21a and the fourth docking port 114, that is, the circulation input port 21a and the fourth docking port 114 are connected through the first switch component 27. The second switch component 28 can also be used as a connecting component between the circulation output port 21b and the third docking port 113, that is, the circulation output port 21b and the third docking port 113 are connected through the second switch component 28. The first switch component 27 and the second switch component 28 can be quick-insert stop valves to facilitate connection with the third docking port 113 and the fourth docking port 114 of the heat exchanger 11, and the quick-insert stop valves have high integration, simple assembly, and more cost advantages. The quick-insert stop valve is equipped with a quick-insert socket and can be SAE, VDA or other structural forms.

[0099] The liquid circuit unit 21 is provided with a first switch 27 and a second switch 28. The first switch 27 is provided on the first pipeline assembly 25, and is used to open or close the circulation input port 21a of the liquid circuit unit 21; the second switch 28 is provided on the second pipeline assembly 26, and is used to open or close the circulation output port 21b of the liquid circuit unit 21. The first switch 27 and the second switch 28 are provided, when the first switch 27 closes the circulation input port 21a, and the second switch 28 closes the circulation output port 21b, the first switch 27 and the second switch 28 can seal the heat exchange medium in the passage formed by the first pipeline assembly 25, the thermal management component 24, and the second pipeline assembly 26, so that the heat exchange medium can be injected into the liquid circuit unit 21 before the liquid circuit unit 21 and the refrigerant unit 10 are assembled, so as to facilitate the injection of the heat exchange medium, thereby facilitating the assembly of the energy storage device 20 and the energy storage system 100 equipped with the liquid circuit unit 21. The first switch component 27 and the second switch component 28 can enable the liquid circuit unit 21 to form a self-enclosed system, thereby realizing the storage and transportation of heat exchange medium with the liquid circuit unit 21.

[0100] In some embodiments, the first switch member 27 is a quick-insert stop valve, and the second switch member 28 is a quick-insert stop valve.

[0101] The quick-insert stop valve can not only open or close the circulation output port 21b and the circulation input port 21a, but also be conveniently connected to the heat exchanger 11. The quick-insert stop valve has high integration, simple assembly and cost advantages.

[0102] like Figure 1 , Figure 3 , Figure 4As shown, in some embodiments, the first pipeline assembly 25 includes a first main pipe 251 and a plurality of first branch pipes 252, one end of each first branch pipe 252 is connected to the first main pipe 251, the other end of each first branch pipe 252 is connected to the inlet of at least one thermal management component 24, and the first switch element 27 is disposed on the first main pipe 251.

[0103] Each first branch pipe 252 is connected to the first main pipe 251 , and the heat exchange medium entering the first main pipe 251 can be distributed to each first branch pipe 252 , and then flow to the thermal management component 24 connected to each first branch pipe 252 .

[0104] The circulation input port 21a can be formed at one end of the first main pipe 251 away from the first branch pipe 252. The first switch 27 can be arranged in the middle area of ​​the first main pipe 251, and the second switch 28 can cut off the internal passage of the first main pipe 251, so that when the first switch 27 is closed, the passage between the circulation input port 21a and the first branch pipe 252 is cut off, and the heat exchange medium cannot flow through the first main pipe 251 to the first branch pipe 252 after passing through the circulation input port 21a. When the first switch 27 is opened, the heat exchange medium can flow through the first main pipe 251 to the first branch pipe 252 after passing through the circulation input port 21a, and then flow to the thermal management component 24. The first switch 27 mentioned here being arranged in the middle area of ​​the first main pipe 251 is not limited to the first switch 27 being arranged in the middle position of the extension direction of the first main pipe 251, and can also be arranged near the position where the circulation input port 21a is formed in the first main pipe 251.

[0105] In some embodiments, the first switch element 27 may be disposed at one end of the first main pipe 251 where the circulation input port 21 a is formed, and the first switch element 27 may open or close the circulation input port 21 a.

[0106] Each first branch pipe 252 may be connected to an inlet of a heat management component 24, and each first branch pipe 252 may be connected to the inlets of multiple heat management components 24. Figure 1 , Figure 3 , Figure 4 As shown, the liquid circuit unit 21 includes multiple rows of thermal management components 24, each row of thermal management components 24 includes multiple thermal management components 24, and the arrangement direction of the multiple rows of thermal management components 24 and the arrangement direction of the thermal management components 24 in each row of thermal management components 24 can be perpendicular. A first branch pipe 252 can be connected to the inlets 241 of multiple thermal management components 24 in a row of thermal management components 24, so as to achieve a first branch pipe connected to the inlets 241 of multiple thermal management components 24.

[0107] The first pipeline assembly 25 includes a first main pipe 251 and a plurality of first branch pipes 252. One end of each first branch pipe 252 is connected to the inlet of at least one heat management component 24, and the other end of each first branch pipe 252 is connected to the first main pipe 251. In this way, each first pipeline assembly 25 can manage the heat exchange medium in the plurality of heat management components 24, which is beneficial to improve the uniformity of the internal temperature of the liquid circuit unit 21. The first switch 27 is arranged on the first main pipe 251. By opening or closing the first switch 27, the channel in the first main pipe 251 can be connected, thereby connecting the circulation input port 21a and the plurality of first branch pipes 252, or the channel in the first main pipe 251 can be cut off, thereby cutting off the circulation input port 21a and the plurality of first branch pipes 252, which facilitates the installation of the first switch 27.

[0108] like Figure 1 , Figure 3 , Figure 4 As shown, in some embodiments, the liquid circuit unit 21 also includes a second main pipe 29 and a third switch component 210. The second main pipe 29 is connected to each first branch pipe 252. The second main pipe 29 is formed with an injection port 291 for injecting heat exchange medium into each first branch pipe 252. The third switch component 210 is arranged on the second main pipe 29, and the third switch component 210 is used to open or close the injection port 291.

[0109] One end of the second main pipe 29 is connected to the first main pipe 251, and the other end of the second main pipe 29 or the side wall of the first main pipe 251 forms an injection port 291. The connection position of the second main pipe 29 and the first main pipe 251 can be located between the connection position of the first branch pipe 252 and the first main pipe 251 and the circulation input port 21a. The connection position of the second main pipe 29 and the first main pipe 251 can also be located at the connection position of the first branch pipe 252 and the first main pipe 251.

[0110] The third switch 210 is used to open or close the injection port 291, which means that the first switch 27 can prevent or allow the heat exchange medium to enter the second main pipe 29 from the injection port 291, and enter the first main pipe 251 and the first branch pipe 252 through the second main pipe 29. In this case, the third switch 210 can be set at the injection port 291 to directly open or close the injection port 291.

[0111] The third switch 210 is used to open or close the injection port 291, which may also mean that the first switch 27 can prevent or allow the heat exchange medium entering the second main pipe 29 from the injection port 291 to enter the first main pipe 251 and the first branch pipe 252. In this case, the third switch 210 can be arranged at a position of the second main pipe 29 close to the third switch.

[0112] The third switch element 210 can be a liquid filling valve, a solenoid valve, a stop valve, a manual switch element, a one-way valve, etc.

[0113] The provision of the second main pipe 29 facilitates the injection of heat exchange medium into each first branch, and the provision of the third switch member 210 can reduce the risk of leakage after the heat exchange medium is injected.

[0114] like Figure 1 , Figure 3 As shown, in some embodiments, the liquid circuit unit 21 includes a supply tank Q, which is connected to the first main pipe 251 , and the supply tank Q is used to replenish heat exchange medium to each first branch pipe 252 .

[0115] The supply tank Q is connected to the first main pipe 251 through the fourth connecting pipe. The connection position of the fourth connecting pipe and the first main pipe 251 can be located between the connection position of the first branch pipe 252 and the first main pipe 251 and the circulation input port 21a. The connection position of the fourth connecting pipe and the first main pipe 251 can also be located at the connection position of the first branch pipe 252 and the first main pipe 251.

[0116] The number of supply boxes Q can be one or more.

[0117] The supply tank Q is used to replenish the heat exchange medium in the liquid circuit in time after the amount of heat exchange medium in the liquid circuit is lost, so as to alleviate the problem of reduced heat exchange capacity due to the reduction of the amount of heat exchange medium in the liquid circuit. Specifically, the supply tank Q can replenish the heat exchange medium in time after the amount of heat exchange medium in the first branch pipe 252 is reduced, so that the amount of heat exchange medium in the first pipeline assembly 25, the thermal management component 24 and the second pipeline assembly 26 is always constant, so that the liquid circuit unit 21 maintains a stable temperature regulation ability.

[0118] In some embodiments, the liquid circuit unit 21 may not be provided with a supply box Q or the supply box Q may be provided outside the box body 22, so as to reduce the occupation of the internal space of the energy storage device 20 and help improve the energy density.

[0119] like Figure 1 , Figure 3 , Figure 4 As shown, in some embodiments, at least part of the first branch pipe 252 is provided with at least one fourth switch 253, and the fourth switch 253 is used to connect the first main pipe 251 and the thermal management component 24 or disconnect the first main pipe 251 and the thermal management component 24.

[0120] The fourth switch 253 controls the opening and closing of the internal channel of the corresponding first branch pipe 252 so that the first main pipe 251 and the heat management component 24 are connected through the first branch pipe 252 or the passage between the first main pipe 251 and the heat management component 24 is cut off.

[0121] The fourth switch element 253 can be a solenoid valve, a stop valve, a manual switch element, a one-way valve, etc.

[0122] Part of the first branch pipes 252 may be provided with the fourth switch 253, or all of the first branch pipes 252 may be provided with the fourth switch 253. In the first branch pipe 252 provided with the fourth switch, the first branch pipe 252 may be provided with one fourth switch, or may be provided with a plurality of fourth switch 253s.

[0123] The provision of the fourth switch element 253 facilitates the independent control of the corresponding first branch pipe 252, thereby facilitating the independent management of each first branch pipe 252, making the working mode of the liquid circuit assembly more flexible.

[0124] Exemplarily, each first branch pipe 252 is provided with two fourth switch elements 253 .

[0125] The two fourth switch members 253 of the first branch pipe 252 are arranged at intervals along the extending direction of the first branch pipe 252 .

[0126] Each first branch pipe 252 is provided with two fourth switch elements 253, which not only facilitates the independent control of each first branch pipe 252, but also enables each first branch pipe 252 to be controlled in sections, making it easy to repair and replace the section where the first branch pipe 252 fails, thereby reducing consumables and lowering costs.

[0127] In some other embodiments, a first switch valve 2511 may also be provided on the first main pipe 251 , and the first switch valve 2511 is used to cut off or conduct the first main pipe 251 .

[0128] The first switch valve 2511 can be in the form of a ball valve, a butterfly valve, etc., so as to conveniently control the on-off of the first pipeline assembly 25.

[0129] In the embodiment in which the first switch valve 2511 is provided on the first main pipe 251 , the first branch pipe 252 may be provided with one or more fourth switch elements 253 . Figure 4 FIG. 2 shows a situation in which a first switch valve 2511 is provided on the first main pipe 251 and a fourth switch element 253 is provided on the first branch pipe 252 .

[0130] like Figure 1 , Figure 3 , Figure 4 As shown, in some embodiments, at least part of the first branch pipe 252 is connected to the second branch pipe 254, a first opening 2541 is formed at one end of the second branch pipe 254, and the first branch pipe 252 is provided with a fifth switch member 255, which is used to connect the first opening 2541 and the first branch pipe 252 or cut off the first opening 2541 and the first branch pipe 252.

[0131] One end of the second branch pipe 254 is connected to the first branch pipe 252 , and the other end of the second branch pipe 254 is formed with a first opening 2541 .

[0132] The fifth switch 255 can be arranged in the middle area of ​​the second branch pipe 254, and the fifth switch 255 can control the opening and closing of the internal channel of the second branch pipe 254, so as to control whether the heat exchange medium in the first branch pipe 252 is discharged from the first opening 2541. The fifth switch 255 arranged in the middle area of ​​the second branch pipe 254 mentioned here is not limited to the fifth switch 255 being arranged in the middle position of the extension direction of the second branch pipe 254, and can also be arranged near the position where the first opening 2541 is formed in the second branch pipe 254.

[0133] Of course, the fifth switch element 255 may also be provided at one end of the second branch pipe 254 where the first opening 2541 is formed, and the fifth switch can open or close the first opening 2541 .

[0134] The fifth switch element 255 can be a solenoid valve, a stop valve, a manual switch element, a one-way valve, etc.

[0135] Some of the first branch pipes 252 may be connected to the second branch pipe 254 , or all of the first branch pipes 252 may be connected to the second branch pipe 254 .

[0136] The provision of the second branch pipe 254 facilitates independent discharge of the heat exchange medium in the corresponding first branch pipe 252 without affecting other first branch pipes 252, thereby facilitating independent management of the first straight pipe and making the working mode of the liquid circuit assembly more flexible.

[0137] In some embodiments, each first branch pipe 252 is connected to a second branch pipe 254, and the heat exchange medium in each first branch pipe 252 is discharged independently without affecting other first branch pipes 252, thereby facilitating independent management of each first branch pipe and making the working mode of the liquid circuit component more flexible.

[0138] like Figure 1 , Figure 3 , Figure 4 As shown, in some embodiments, the second pipe assembly 26 includes a third main pipe 261 and multiple third branch pipes 262, one end of each third branch pipe 262 is connected to the third main pipe 261, and the other end of each third branch pipe 262 is connected to the outlet 242 of at least one thermal management component 24.

[0139] Each third branch pipe 262 is connected to the third main pipe 261 , and the heat exchange medium in each third branch pipe 262 is collected by the third main pipe 261 and then discharged from the circulation output port 21 b .

[0140] The circulation output port 21b may be formed at one end of the third main pipe 261 away from the third branch pipe 262. The second switch 28 may be disposed in the middle region of the third main pipe 261, and the second switch 28 may cut off the internal passage of the third main pipe 261, so that when the third switch 210 is in the closed state, the passage between the circulation output port 21b and the third branch pipe 262 is cut off, and the heat exchange medium cannot be discharged from the circulation output port 21b. When the second switch 28 is in the open state, the heat exchange medium cannot be discharged from the circulation output port 21b after being discharged from the thermal management component 24. The second switch 28 disposed in the middle region of the third main pipe 261 mentioned here is not limited to the second switch 28 being disposed in the middle position in the extension direction of the third main pipe 261, and may also be disposed in a position close to the third main pipe 261 where the circulation output port 21b is formed.

[0141] In some embodiments, the second switch element 28 may be disposed at one end of the third main pipe 261 where the circulation outlet 21 b is formed, and the second switch element 28 may open or close the circulation outlet 21 b.

[0142] Each third branch pipe 262 can be connected to the inlet of a thermal management component 24, and each third branch pipe 262 can also be connected to the inlets of multiple thermal management components 24. Exemplarily, the liquid circuit unit 21 includes multiple rows of thermal management components 24, each row of thermal management components 24 includes multiple thermal management components 24, and the arrangement direction of the multiple rows of thermal management components 24 and the arrangement direction of the thermal management components 24 in each row of thermal management components 24 can be perpendicular. One third branch pipe 262 can be connected to the outlets 242 of multiple thermal management components 24 in a row of thermal management components 24, so as to realize the connection of one third branch pipe 262 with the outlets 242 of multiple thermal management components 24.

[0143] The second pipeline assembly 26 includes a third main pipe 261 and multiple third branch pipes 262. The other end of each third branch pipe 262 is connected to the outlet 242 of at least one thermal management component 24. In this way, each second pipeline assembly 26 can manage the heat exchange medium in multiple thermal management components 24, which is beneficial to improving the uniformity of the internal temperature of the liquid circuit unit 21.

[0144] like Figure 1 , Figure 3 , Figure 4 As shown, in some embodiments, the liquid circuit unit 21 also includes a fourth main pipe 220 and a sixth switch 230, the fourth main pipe 220 is connected to each third branch pipe 262, the fourth main pipe 220 is formed with a first exhaust port 2201 for exhausting the gas in the second pipeline assembly 26, and the sixth switch is used to open or close the first exhaust port 2201.

[0145] One end of the fourth main pipe 220 is connected to the third main pipe 261, and the other end of the fourth main pipe 220 or the side wall of the fourth main pipe 220 forms a first exhaust port 2201. The connection position of the fourth main pipe 220 and the third main pipe 261 can be located between the connection position of the third branch pipe 262 and the third main pipe 261 and the circulation output port 21b. The connection position of the fourth main pipe 220 and the third main pipe 261 can also be located at the connection position of the third branch pipe 262 and the third main pipe 261.

[0146] The sixth switch 230 is used to open or close the first exhaust port 2201, which means that the sixth switch 230 can prevent or allow the gas from the inside of the liquid circuit assembly 21 to reach the first exhaust port 2201. In this case, the sixth switch 230 can be disposed in the middle area of ​​the fourth main pipe 220.

[0147] The sixth switch element 230 may be disposed at one end of the fourth main pipe 220 where the first exhaust port 2201 is disposed, and the sixth switch element 230 may open or close the first exhaust port 2201 to allow or prevent the gas inside the liquid circuit unit 21 from being discharged from the first exhaust port 2201 .

[0148] The fourth main pipe 220 is provided to facilitate the discharge of gas in each third branch pipe 262, so that the heat exchange medium can fill the entire first pipeline assembly 25, the second pipeline assembly 26 and the thermal management component 24, so that the liquid circuit assembly has a better temperature regulation ability. The sixth switch 230 can reduce the risk of leakage of the heat exchange medium.

[0149] like Figure 1 , Figure 3 , Figure 4 As shown, in some embodiments, the liquid circuit unit 21 also includes a fifth main pipe 240 and a seventh switch 250, at least part of the third branch pipe 262 is connected to the fifth main pipe 240, the fifth main pipe 240 is formed with a second exhaust port 2401 for exhausting the gas in the first pipeline assembly 25 and the thermal management component 24, and the seventh switch is used to open or close the second exhaust port 2401.

[0150] One end of the fifth main pipe 240 is connected to the third branch pipe 262, and the other end of the fifth main pipe 240 or the side wall of the fifth main pipe 240 forms a second exhaust port 2401. The connection position of the fifth main pipe 240 and the third branch pipe 262 can be located at any position of the third branch pipe 262. Exemplarily, the connection position of the fifth main pipe 240 and the third branch pipe 262 is located at an end of the third branch pipe 262 that is farthest from the third main pipe 261 along its extension direction.

[0151] The seventh switch 250 is used to open or close the second exhaust port 2401, which means that the seventh switch 250 can prevent or allow the gas from the inside of the liquid circuit assembly 21 to reach the second exhaust port 2401. In this case, the seventh switch 250 can be disposed in the middle area of ​​the fifth main pipe 240.

[0152] The seventh switch element 250 may be disposed at one end of the fifth main pipe 240 where the second exhaust port 2401 is disposed. The seventh switch element may open or close the second exhaust port 2401 to allow or prevent the gas inside the liquid circuit unit 21 from being discharged from the second exhaust port 2401 .

[0153] The seventh switch element 250 may be a solenoid valve, a stop valve, a manual switch element, a one-way valve, an exhaust valve, etc.

[0154] The second exhaust port 2401 is mainly used to exhaust at least part of the gas in the first pipeline assembly 25 and the thermal management component 24 during the process of injecting liquid into the liquid circuit assembly 21 .

[0155] The fifth main pipe 240 is provided to facilitate the discharge of gas into the first pipeline assembly 25 and the thermal management component 24, so that the heat exchange medium can fill the entire first pipeline assembly 25 and the thermal management component 24, so that the liquid circuit assembly has a better temperature regulation ability. The seventh switch 250 can reduce the risk of leakage of the heat exchange medium.

[0156] like Figure 1 , Figure 3 , Figure 4 As shown, in some embodiments, at least part of the third branch pipe 262 is provided with at least one eighth switch 263, and the eighth switch 263 is used to connect the third main pipe 261 and the thermal management component 24 or disconnect the third main pipe 261 and the thermal management component 24.

[0157] The eighth switch 263 controls the opening and closing of the inner channel of the corresponding third branch pipe 262 so that the third main pipe 261 and the heat management component 24 are connected through the third branch pipe 262 or the passage between the third main pipe 261 and the heat management component 24 is cut off.

[0158] The eighth switch element 263 can be a solenoid valve, a stop valve, a manual switch element, a one-way valve, etc.

[0159] Part of the third branch pipes 262 may be provided with the eighth switch 263, or all of the third branch pipes 262 may be provided with the eighth switch 263. In the third branch pipe 262 provided with the eighth switch, the third branch pipe 262 may be provided with one eighth switch 263, or may be provided with multiple eighth switches.

[0160] The provision of the eighth switch element 263 facilitates the independent control of the corresponding third branch pipe 262, thereby facilitating the independent management of each third branch pipe 262, making the working mode of the liquid circuit assembly more flexible.

[0161] Exemplarily, each third branch pipe 262 is provided with two eighth switch elements 263 .

[0162] The two eighth switch members 263 of the third branch pipe 262 are arranged at intervals along the extending direction of the third branch pipe 262 .

[0163] Each third branch pipe 262 is provided with two eighth switch components 263, which not only facilitates the independent control of each third branch pipe 262, but also enables each third branch pipe 262 to be controlled in sections, making it easy to repair and replace the section where the third branch pipe 262 fails, thereby reducing consumables and lowering costs.

[0164] In some other embodiments, a second switch valve 2611 may also be provided on the third main pipe 261 , and the second switch valve 2611 is used to cut off or conduct the third main pipe 261 .

[0165] The second switch valve 2611 can be in the form of a ball valve, a butterfly valve, etc., so as to conveniently control the on-off of the second pipeline assembly 26.

[0166] In the embodiment where the second switch valve 2611 is provided on the third main pipe 261 , the third branch pipe 262 may be provided with one or more eighth switch elements 263 . Figure 4 FIG. 2 shows a situation in which a second switch valve 2611 is provided on the third main pipe 261 and an eighth switch element 263 is provided on the third branch pipe 262 .

[0167] like Figure 1 , Figure 3 , Figure 4 As shown, in some embodiments, at least part of the third branch pipe 262 is connected to the fourth branch pipe 264, a second opening 2641 is formed at one end of the fourth branch pipe 264, and the fourth branch pipe 264 is provided with a ninth switch member 265, which is used to connect the second opening 2641 and the third branch pipe 262 or cut off the second opening 2641 and the third branch pipe 262.

[0168] One end of the fourth branch pipe 264 is connected to the third branch pipe 262 , and the other end of the fourth branch pipe 264 is formed with a second opening 2641 .

[0169] The ninth switch 265 can be arranged in the middle area of ​​the fourth branch pipe 264, and can control the opening and closing of the internal passage of the fourth branch pipe 264, so as to control whether the heat exchange medium in the third branch pipe 262 is discharged from the second opening 2641. The ninth switch 265 arranged in the middle area of ​​the fourth branch pipe 264 mentioned here is not limited to the ninth switch 265 being arranged in the middle position of the extension direction of the fourth branch pipe 264, and can also be arranged near the fourth branch pipe 264 where the second opening 2641 is formed.

[0170] Of course, the ninth switch element 265 may also be provided at one end of the fourth branch pipe 264 where the second opening 2641 is formed, and the ninth switch can open or close the second opening 2641 .

[0171] The ninth switch element 265 can be a solenoid valve, a stop valve, a manual switch element, a one-way valve, etc.

[0172] Some of the third branch pipes 262 may be connected to the fourth branch pipe 264 , or all of the third branch pipes 262 may be connected to the fourth branch pipe 264 .

[0173] The fourth branch pipe 264 is provided to facilitate the independent discharge of the heat exchange medium in the corresponding third branch pipe 262 without affecting other third branch pipes 262, thereby facilitating the independent management of the third branch pipe 262, making the working mode of the liquid circuit assembly more flexible. The ninth switch 265 reduces the risk of heat exchange medium leaking from the fourth branch pipe 264 when the pipeline is normal.

[0174] Each third branch pipe 262 is connected to the fourth branch pipe 264, so the heat exchange medium in each third branch pipe 262 is discharged independently without affecting other third branches 262, thereby facilitating the independent management of each third branch pipe 262 and making the working mode of the liquid circuit component more flexible.

[0175] In some embodiments, in some embodiments, the liquid circuit unit 21 further includes a pumping device 260 , and the pumping device 260 is used to pump the heat exchange medium in the first pipeline assembly 25 to the thermal management component 24 .

[0176] The pumping device 260 is used to provide power for the heat exchange medium to circulate in the liquid loop. The pumping device 260 can be arranged in the first pipeline assembly 25.

[0177] The pumping device 260 may be a water pump, a motor, etc. The number of the pumping device 260 may be one or more.

[0178] Before the liquid circuit unit 21 and the heat exchanger 11 of the refrigerant unit 10 form a liquid loop, the pumping device 260 can quickly fill the first pipeline assembly 25, each thermal management component 24, and the second pipeline assembly 26 with the heat exchange medium, thereby improving the efficiency of heat exchange medium injection. After the liquid circuit unit 21 and the heat exchanger 11 of the refrigerant unit 10 form a liquid loop, the pumping device 260 is conducive to the heat exchange medium always remaining in a flowing state in the first management component, the thermal management component 24, and the second pipeline assembly 26, thereby improving the temperature regulation capability.

[0179] like Figure 1 , Figure 3 As shown, in some embodiments, the first pipeline assembly 25 includes a first main pipe 251 and a plurality of first branch pipes 252, one end of each first branch pipe 252 is connected to the first main pipe 251, and the other end of each first branch pipe 252 is connected to the input end of at least one thermal management component 24; each first branch pipe 252 is provided with a pumping device 260.

[0180] The pumping device 260 is disposed on each first branch pipe 252 , that is, each first branch pipe 252 is provided with a pumping device 260 . The pumping device 260 on each first branch pipe 252 can provide power for the circulation flow of the heat exchange medium in the corresponding first branch pipe 252 .

[0181] Each first branch pipe 252 is provided with a pumping device 260. Before the liquid circuit unit 21 and the heat exchanger 11 of the refrigerant unit 10 form a liquid loop, the pumping device 260 can quickly fill the first pipeline assembly 25, each thermal management component 24 and the second pipeline assembly 26 with the heat exchange medium, thereby improving the efficiency of heat exchange medium injection. Improve the uniformity of heat exchange medium distribution. After the liquid circuit unit 21 and the heat exchanger 11 of the refrigerant unit 10 form a liquid loop, the pumping device 260 is conducive to the heat exchange medium always maintaining a flowing state in the first management component, the thermal management component 24 and the second pipeline assembly 26, thereby improving the temperature regulation ability. The provision of a pumping device 260 on each first branch pipe 252 also facilitates the independent control of the circulation capacity of the heat exchange medium in each first branch pipe 252.

[0182] like Figure 1 , Figure 3 As shown, in the embodiment where each first branch pipe 252 is provided with a pumping device 260, at least one fourth switch member 253 is provided at the rear end of the pumping device 260, which can simplify the difficulty of replacing the pumping device 260 and alleviate the loss, discharge and refilling of the heat exchange medium in the liquid circuit unit 21 during the replacement process of the pumping device 260. The rear end of the pumping device 260 refers to the end of the pumping device 260 that pumps out the heat exchange medium.

[0183] like Figure 4As shown, in other embodiments, the first pipeline assembly 25 includes a first main pipe 251 and a plurality of first branch pipes 252, one end of each first branch pipe 252 is connected to the first main pipe 251, and the other end of each first branch pipe 252 is connected to the input end of at least one thermal management component 24; the pumping device 260 is disposed on the first main pipe 251.

[0184] The pumping device 260 is disposed on the first main pipe 251, and one pumping device 260 can be disposed to provide power for the circulation of the heat exchange medium of each first branch pipe 252, which can reduce the number of pumping devices 260 of the liquid circuit unit 21 and save costs. In the embodiment where the liquid circuit unit 21 is disposed on the box 22 of the energy storage device 20, the fewer the number of pumping devices 260, the less internal space of the box 22 is occupied, which is conducive to improving the energy density of the energy storage device 20.

[0185] In the embodiment where the pumping device 260 is arranged on the first main pipe 251, the first switch valve 2511 is arranged at the rear end of the pumping device 260, which can simplify the difficulty of replacing the pumping device 260 and alleviate the loss, discharge and re-injection of heat exchange medium in the liquid circuit unit 21 during the replacement process of the pumping device 260.

[0186] like Figure 1 , Figure 3 , Figure 4 As shown, in some embodiments, the liquid circuit unit 21 further includes a first temperature detection component 270 , and the first temperature detection component 270 is used to detect the temperature of the heat exchange medium in the first pipeline assembly 25 .

[0187] In the embodiment where the first pipeline assembly 25 includes a first main pipe 251 and a plurality of first branch pipes 252 , the first temperature detecting member 270 may be disposed on an outer surface of the first main pipe 251 .

[0188] The first temperature detection member 270 may be a temperature sensor, a thermocouple, a thermal resistor, a thermistor, or the like.

[0189] The temperature of the heat exchange medium in the first pipeline assembly 25 is detected by the first temperature detection member 270 , so that the temperature of the heat exchange medium in the first pipeline assembly 25 can be easily grasped, and the temperature of the battery cell 23 can be adjusted more accurately.

[0190] In some embodiments, the fluid circuit unit 21 further includes a second temperature detection component 280 , and the second temperature detection component 280 is used to detect the temperature of the heat exchange medium in the second pipeline assembly 26 .

[0191] In the embodiment where the second pipeline assembly 26 includes a third main pipe 261 and a plurality of third branch pipes 262 , the second temperature detecting member 280 may be disposed on an outer surface of the third main pipe 261 .

[0192] The second temperature detection member 280 may be a temperature sensor, a thermocouple, a thermal resistor, a thermistor, or the like.

[0193] The temperature of the heat exchange medium in the second pipeline assembly 26 is detected by the second temperature detection member 280 , so that the temperature of the heat exchange medium in the second pipeline assembly 26 can be easily grasped, and the temperature regulation of the battery cell 23 can be realized more accurately.

[0194] Among them, the liquid circuit unit 21 can be provided with only the first temperature detection member 270 or only the second temperature detection member 280. Of course, the liquid circuit unit 21 can also include the first temperature detection member 270 and the second temperature detection member 280. Through the temperature difference obtained by the first temperature detection member 270 and the second temperature detection member 280, it can be known that after the heat exchange medium flows from the first pipeline assembly 25 through the thermal management component 24 to the second pipeline assembly 26, the heat exchange between the heat exchange medium and the battery cell 23 causes the temperature change of the battery cell 23, which is conducive to more accurately adjusting the temperature of the battery cell 23.

[0195] In some embodiments, the fluid circuit assembly 21 further includes a third temperature detection component 290 , and the third temperature detection component 290 is used to detect the temperature of the battery cell 23 .

[0196] The third temperature detection member 290 may be a temperature sensor, a thermocouple, a thermal resistor, a thermistor, or the like.

[0197] The third temperature detection element 290 can detect the temperature of the battery cell 23 in real time, and can obtain the temperature of the battery cell 23 before and after the thermal management component 24 is adjusted, which is conducive to more accurate adjustment of the temperature of the battery cell 23.

[0198] An embodiment of the present application provides an energy storage device 20, which includes a box 22, a battery cell 23 and a fluid circuit unit 21 provided in any of the above embodiments; the battery cell 23 is accommodated in the box 22; the fluid circuit unit 21 is arranged in the box 22, and the thermal management component 24 is used to adjust the temperature of the battery cell 23.

[0199] The liquid circuit unit 21 in any of the above embodiments is provided with a first switch 27 and a second switch 28. The first switch 27 is provided in the first pipeline assembly 25, and is used to open or close the circulation input port 21a of the liquid circuit unit 21; the second switch 28 is provided in the second pipeline assembly 26, and is used to open or close the circulation output port 21b of the liquid circuit unit 21. The first switch 27 and the second switch 28 are provided, when the first switch 27 closes the circulation input port 21a, and the second switch 28 closes the circulation output port 21b, the first switch 27 and the second switch 28 can seal the heat exchange medium in the passage formed by the first pipeline assembly 25, the thermal management component 24, and the second pipeline assembly 26, so that the heat exchange medium can be injected into the liquid circuit unit 21 before the liquid circuit unit 21 and the refrigerant unit 10 are assembled, so as to facilitate the injection of the heat exchange medium, thereby facilitating the assembly of the energy storage device 20.

[0200] An embodiment of the present application also provides a refrigerant system, which includes a condenser 13, a compressor 12, a heat exchanger 11 and an energy storage device 20 provided in any of the above embodiments, wherein the output end 122 of the compressor is connected to the input end 131 of the condenser; the heat exchanger 11 has a first docking port 111 and a second docking port 112, the first docking port 111 is used to communicate with the input end 121 of the compressor, and the second docking port 112 is used to communicate with the output end 132 of the condenser; the circulation output port 21b and the circulation input port 21a are both connected to the heat exchanger 11.

[0201] The first docking port 111 and the second docking port 112 are connected to each other through a first channel inside the heat exchanger 11 , and the first channel is used for the refrigerant to flow through.

[0202] The heat exchanger 11 also has a third docking port 113 and a fourth docking port 114, which are connected inside the heat exchanger 11 through a second channel for the heat exchange medium flowing through the liquid circuit unit 21. The first channel and the second channel are independent of each other.

[0203] The circuit where the condenser 13, the compressor 12, and the heat exchanger 11 are located is a refrigerant circuit. When the refrigerant flows through the first channel, it exchanges heat with the heat exchange medium flowing through the second channel, thereby reducing the temperature of the battery cell.

[0204] The condenser 13, the compressor 12, the heat exchanger 11 and the energy storage device 20 provided in the above embodiment can be arranged separately and then connected into an integral structure, which is convenient for the assembly of the refrigerant system. In addition, the energy storage device 20 in the above embodiment can realize the injection of heat exchange medium into the liquid circuit unit 21 before the assembly of the liquid circuit unit 21, the heat exchanger 11, the condenser 13 and the compressor 12, which is convenient for the injection of heat exchange medium, thereby facilitating the assembly of the refrigerant system.

[0205] An embodiment of the present application provides an energy storage system 100, which includes a refrigerant unit 10 and an energy storage device 20 provided in any of the above embodiments. The refrigerant unit 10 includes a heat exchanger 11; a circulation output port 21b and a circulation input port 21a are both connected to the heat exchanger 11.

[0206] The refrigerant unit 10 and the energy storage device 20 provided in the above embodiment can be separately arranged and then connected into an integral structure, which facilitates the assembly of the energy storage system 100. In addition, the energy storage device 20 in the above embodiment can realize the injection of heat exchange medium into the liquid circuit unit 21 before the liquid circuit unit 21 and the refrigerant unit 10 are assembled, which facilitates the injection of heat exchange medium, thereby facilitating the assembly of the energy storage system 100.

[0207] In some embodiments, the refrigerant unit 10 is disposed outside the box body 22 .

[0208] The refrigerant unit 10 is disposed outside the box body 22 of the energy storage device 20 , so that more space inside the box body 22 of the energy storage device 20 can be used to accommodate the battery cells 23 , which is beneficial to improving the energy density of the battery cells 23 .

[0209] In some embodiments, the energy storage system 100 includes a plurality of the energy storage devices 20 , and a circulation output port 21 b and a circulation input port 21 a of each energy storage device 20 are connected to the heat exchanger 11 .

[0210] The circulation output port 21b and the circulation input port 21a of each energy storage device 20 in the multiple energy storage devices 20 are both detachably connected to the heat exchanger 11, so the refrigerant unit 10 can simultaneously perform heat exchange with multiple energy storage devices 20, thereby improving heat exchange efficiency and saving costs. The circulation output port 21b and the circulation input port 21a are both detachably connected to the heat exchanger 11, which facilitates the assembly or disassembly of the refrigerant unit 10 and the energy storage device 20, and also facilitates the maintenance and replacement of the energy storage system 100.

[0211] The embodiment of the present application provides an energy storage device 20, which includes a box 22, a battery cell 23 and a fluid circuit assembly 21. The battery cell 23 and the fluid circuit assembly 21 are arranged in the box 22. The energy storage device 20 includes multiple rows of battery cells 23, and each row of battery cells 23 includes multiple battery cells 23. In some embodiments of the present application, the energy storage device 20 includes five rows of battery cells 23, and each row of battery cells 23 includes eight battery cells 23.

[0212] The liquid circuit assembly 21 includes multiple rows of thermal management components 24, each row of thermal management components 24 includes multiple thermal management components 24, and one row of battery cells 23 is correspondingly provided with one row of thermal management components 24. The liquid circuit assembly 21 includes five rows of thermal management components 24, and each row of thermal management components 24 includes eight thermal management components 24. The liquid circuit assembly 21 also includes a first pipeline assembly 25, a second pipeline assembly 26, a first switch 27, and a second switch 28. The first pipeline assembly 25 connects the circulation input port 21a of the liquid circuit assembly 21 and the inlet 241 of each thermal management component 24. The second pipeline assembly 26 connects the circulation output port 21b of the liquid circuit assembly 21 and the outlet 242 of each thermal management component 24. The first switch 27 and the second switch 28 are both quick-insert stop valves. The first switch 27 is arranged on the first pipeline assembly 25, and can open or close the circulation input port 21a. The second switch 28 is arranged on the second pipeline assembly 26, and can open or close the circulation output port 21b. The first pipeline assembly 25 includes a first main pipe 251 and five first branch pipes 252, and the five first branch pipes 252 are all connected to the first main pipe 251. The five first branch pipes 252 are respectively connected to the inlet 241 of each thermal management component 24 of the five rows of thermal management components 24. The circulation input port 21a is formed at one end of the first main pipe 251, and the first switch member 27 is arranged on the first main pipe 251. The liquid circuit unit 21 also includes a second main pipe 29, which is connected to the first main pipe 251, and one end of the second main pipe 29 is formed with an injection port 291 for injecting heat exchange medium into the first pipeline assembly 25, and the second main pipe 29 is provided with a third switch member 210, which is a liquid injection valve. Two fourth switch members 253 are arranged on each first branch pipe 252; or one fourth switch member 253 is arranged on each first branch pipe 252 and a first switch valve 2511 for cutting off or conducting the first main pipe 251 is arranged on the first main pipe 251. Each first branch pipe 252 is provided with a second branch pipe 254, and a first opening 2541 is formed at one end of the second branch pipe 254, and a fifth switch 255 is also provided on the second branch pipe 254. The fifth switch 255 is a pipeline stop valve. The second pipeline assembly 26 includes a third main pipe 261 and five third branch pipes 262, and the five third branch pipes 262 are all connected to the third main pipe 261. The five third branch pipes 262 are respectively connected to the outlet 242 of each thermal management component 24 of the five rows of thermal management components 24. The circulation output port 21b is formed at one end of the third main pipe 261, and the second switch 28 is provided on the third main pipe 261. The liquid circuit unit 21 also includes a fourth main pipe 220, which is connected to the third main pipe 261, and a first exhaust port 2201 is formed at one end of the fourth main pipe 220, and the fourth main pipe 220 is provided with a sixth switch 230. The sixth switch 230 is an exhaust valve.Two eighth switch components 263 are provided on each third branch pipe 262; or one eighth switch component 263 is provided on each third branch pipe 262 and a second switch valve 2611 for cutting off or conducting the third main pipe 261 is provided on the third main pipe 261. A fourth branch pipe 264 is provided on each third branch pipe 262, a second opening 2641 is formed at one end of the fourth branch pipe 264, and a ninth switch component 265 is also provided on the fourth branch pipe 264. The ninth switch component 265 is a pipeline stop valve. A fifth main pipe 240 is provided on each third branch pipe 262, a second exhaust port 2401 is formed at one end of the fifth main pipe 240, and a seventh switch component 250 is also provided on the fifth main pipe 240. The seventh switch component 250 is an exhaust valve.

[0213] The above are only preferred embodiments of the present application and are not intended to limit the present application. For those skilled in the art, the present application may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. A liquid circuit unit, characterized in that: The liquid circuit unit has a circulation input port and a circulation output port, and the liquid circuit unit includes: a plurality of thermal management components, the thermal management components having an inlet and an outlet; a first pipe assembly, connecting the circulation input port and the inlet of each of the thermal management components; A second pipeline assembly, connecting the circulation output port and an outlet of each of the thermal management components; A first switch, disposed on the first pipeline assembly, for opening or closing the circulation input port; The second switch is arranged on the second pipeline assembly and is used to open or close the circulation output port.

2. The liquid circuit unit according to claim 1, characterized in that: The first switch component is a quick-insert stop valve, and the second switch component is a quick-insert stop valve.

3. The fluid circuit unit according to claim 1, characterized in that: The first pipeline assembly includes a first main pipe and a plurality of first branch pipes, one end of each of the first branch pipes is connected to the first main pipe, the other end of each of the first branch pipes is connected to an inlet of at least one of the thermal management components, and the first switch is arranged on the first main pipe.

4. The liquid circuit unit according to claim 3, characterized in that: The liquid circuit unit also includes a second main pipe and a third switch component. The second main pipe is connected to each of the first branch pipes. The second main pipe is formed with an injection port for injecting heat exchange medium into each of the first branch pipes. The third switch component is arranged on the second main pipe and is used to open or close the injection port.

5. The fluid circuit unit according to claim 3, characterized in that: The liquid circuit unit includes a supply box, which is communicated with the first main pipe and is used to replenish heat exchange medium to each of the first branch pipes.

6. The liquid circuit unit according to claim 3, characterized in that: At least a portion of the first branch pipes is provided with at least one fourth switch element, and the fourth switch element is used to connect the first main pipe and the heat management component or disconnect the first main pipe and the heat management component.

7. The fluid circuit unit according to claim 6, characterized in that: Each of the first branch pipes is provided with two of the fourth switch elements.

8. The fluid circuit unit according to claim 3, characterized in that: At least part of the first branch pipe is connected to a second branch pipe, a first opening is formed at one end of the second branch pipe, and the first branch pipe is provided with a fifth switch element, which is used to connect the first opening and the first branch pipe or cut off the first opening and the first branch pipe.

9. The fluid circuit unit according to claim 8, characterized in that: Each of the first branch pipes is connected to the second branch pipe.

10. The fluid circuit unit according to claim 1, characterized in that: The second pipe assembly includes a third main pipe and a plurality of third branch pipes, one end of each of the third branch pipes is connected to the third main pipe, and the other end of each of the third branch pipes is connected to an outlet of at least one of the thermal management components.

11. The fluid circuit unit according to claim 10, characterized in that: The liquid circuit unit also includes a fourth main pipe and a sixth switch. The fourth main pipe is connected to each of the third branches. The fourth main pipe is formed with a first exhaust port for exhausting gas in the second pipeline assembly. The sixth switch is used to open or close the first exhaust port.

12. The fluid circuit unit according to claim 10, characterized in that: The liquid circuit unit also includes a fifth main pipe and a seventh switch. At least part of the third branch pipe is connected to the fifth main pipe. The fifth main pipe is formed with a second exhaust port for exhausting gas in the first pipeline assembly and the thermal management component. The seventh switch is used to open or close the second exhaust port.

13. The fluid circuit unit according to claim 10, characterized in that: At least part of the third branch pipes is provided with at least one eighth switch element, and the eighth switch element is used to connect the third main pipe and the heat management component or disconnect the third main pipe and the heat management component.

14. The fluid circuit unit according to claim 13, characterized in that: Each of the third branch pipes is provided with two of the eighth switch members.

15. The fluid circuit unit according to claim 10, characterized in that: At least part of the third branch pipe is connected to a fourth branch pipe, a second opening is formed at one end of the fourth branch pipe, and the fourth branch pipe is provided with a ninth switch member, which is used to connect the second opening and the third branch pipe or cut off the second opening and the third branch pipe.

16. The fluid circuit unit according to claim 15, characterized in that: Each of the third branch pipes is connected to the fourth branch pipe.

17. The fluid circuit unit according to claim 1, characterized in that: The fluid circuit unit further includes a pumping device, which is used to pump the heat exchange medium in the first pipeline assembly to the thermal management component.

18. The fluid circuit unit according to claim 17, characterized in that: The first pipeline assembly includes a first main pipe and a plurality of first branch pipes, one end of each of the first branch pipes is connected to the first main pipe, and the other end of each of the first branch pipes is connected to the input end of at least one of the thermal management components; Each of the first branch pipes is provided with the pumping device.

19. The fluid circuit unit according to claim 17, characterized in that: The first pipeline assembly includes a first main pipe and a plurality of first branch pipes, one end of each of the first branch pipes is connected to the first main pipe, and the other end of each of the first branch pipes is connected to the input end of at least one of the thermal management components; The pumping device is arranged on the first main pipe.

20. The fluid circuit unit according to claim 1, characterized in that: The liquid circuit unit also includes a first temperature detection component, which is used to detect the temperature of the heat exchange medium in the first pipeline assembly.

21. The fluid circuit assembly according to claim 1, characterized in that: The liquid circuit unit also includes a second temperature detection component, and the second temperature detection component is used to detect the temperature of the heat exchange medium in the second pipeline assembly.

22. An energy storage device, characterized in that: include: Box; A battery cell is contained in the box; According to any one of claims 1 to 21, the liquid circuit unit is arranged in the box body, and the thermal management component is used to adjust the temperature of the battery cell.

23. An energy storage system, characterized in that: include: Refrigerant unit, including heat exchanger; According to the energy storage device according to claim 22, the circulation output port and the circulation input port are both connected to the heat exchanger.

24. The energy storage system according to claim 23, characterized in that: The refrigerant unit is arranged outside the box.

25. The energy storage system according to claim 24, characterized in that: The energy storage system comprises a plurality of the energy storage devices, and the circulation output port and the circulation input port of each of the energy storage devices are detachably connected to the heat exchanger.

26. A refrigerant system, characterized in that: include: Condenser; A compressor, wherein an output end of the compressor is connected to an input end of the condenser; A heat exchanger having a first pair of ports and a second pair of ports, wherein the first pair of ports is used to communicate with the input end of the compressor, and the second pair of ports is used to communicate with the output end of the condenser; According to the energy storage device according to claim 22, the circulation output port and the circulation input port are both connected to the heat exchanger.

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