Air conditioning system for energy storage device, control method and energy storage device

Abstract

The application discloses an air conditioning system for energy storage equipment, a control method and the energy storage equipment. The air conditioning system comprises a first pipeline unit, a second pipeline unit and a third pipeline unit, a second heat exchange assembly with a first channel and a second channel, a first heat exchange assembly with a first heat exchange pipe and a second heat exchange pipe and a valve assembly. The first pipeline unit comprises a first pump and at least one cooling assembly, and is used for heat exchange with energy storage batteries to cool the energy storage batteries. The second pipeline unit and the third pipeline unit are used for cooling heat exchange medium of the first pipeline unit. The first heat exchange assembly further comprises first fins, part of the first fins are connected with the first heat exchange pipe, and part of the first fins are connected with the second heat exchange pipe. The air conditioning system is favorable for reducing operation energy consumption and improving system utilization.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of energy storage systems, in particular to an air conditioning system for energy storage equipment, a control method and energy storage equipment. BACKGROUND

[0002] With the in-depth development of new energy such as wind power and photovoltaic power generation, the combination of wind energy, solar energy and energy storage, the energy storage capacity of the energy storage battery in the energy storage system can deliver electric energy to the power grid when the wind power and photovoltaic power generation are small, and can also shift peak load to valley load, saving the user's electricity cost and solving the problem of electricity shortage at peak time. In some practical applications, the energy storage battery is arranged in a closed box, and the heat generated by the battery charging and discharging needs to be cooled by installing an air conditioning system, and the electricity consumption of the air conditioning system also needs to use the storage of the energy storage battery. Therefore, how to reduce the energy consumption of the air conditioning system while ensuring the cooling effect is a problem that needs to be solved by those skilled in the art. SUMMARY

[0003] In a first aspect, the present application provides an air conditioning system for energy storage equipment, which uses multiple cooling pipeline units to reduce the energy consumption of the air conditioning system and improve the utilization rate of the system.

[0004] Another aspect of the present application provides a control method for an air conditioning system, which can effectively reduce the energy consumption of the air conditioning system.

[0005] Still another aspect of the present application provides an energy storage equipment, more specifically an energy storage equipment with the air conditioning system of the first aspect.

[0006] According to the air conditioning system of the first aspect of the present application, the air conditioning system comprises a first pipeline unit, a second pipeline unit and a third pipeline unit;

[0007] A first heat exchange assembly has a first heat exchange pipe and a second heat exchange pipe;

[0008] A second heat exchange assembly has a first channel and a second channel;

[0009] The first pipeline unit comprises a first pump and at least one cooling assembly, the first channel of the second heat exchange assembly is in communication with one inlet and outlet of the first pump, the first channel is in communication with one inlet and outlet of the cooling assembly, and the other inlet and outlet of the cooling assembly is in communication with the other inlet and outlet of the first pump;

[0010] The second pipeline unit comprises a compressor and a throttling assembly, the first heat exchange pipe of the first heat exchange assembly is communicated with one inlet and outlet of the compressor, the first heat exchange pipe is communicated with one inlet and outlet of the throttling assembly, the second channel of the second heat exchange assembly is communicated with the other inlet and outlet of the compressor, and the second channel is communicated with the other inlet and outlet of the throttling assembly.

[0011] The valve assembly comprises a plurality of inlets and outlets, one of the inlets and outlets is communicated with the first pipeline unit, another of the inlets and outlets is communicated with the first channel of the second heat exchange assembly, and the other of the inlets and outlets is communicated with the third pipeline unit.

[0012] The third pipeline unit, the second heat exchange pipe of the first heat exchange assembly is communicated with one inlet and outlet of the valve assembly, and the second heat exchange pipe is communicated with the inlet and outlet of the other valve assembly.

[0013] The first heat exchange assembly further comprises first fins, part of the first fins is connected with the first heat exchange pipe, and part of the first fins is connected with the second heat exchange pipe.

[0014] In some embodiments, the first pipeline unit comprises a first refrigerant, the second pipeline unit comprises a second refrigerant, the first heat exchange pipe and the second heat exchange pipe are not communicated, and / or the first channel and the second channel are not communicated.

[0015] According to the air conditioning system of the present application, the second pipeline unit and the third pipeline unit share one first heat exchange assembly, which can reduce the power consumption of the air conditioner and the size of the air conditioner, so as to provide more space for loading more energy storage batteries, thereby increasing the power storage capacity of the energy storage system.

[0016] In addition, the air conditioning system according to the above-mentioned embodiments of the present application can further have the following additional technical features:

[0017] In some embodiments, the second pipeline unit further comprises a four-way valve, the first heat exchange pipe of the first heat exchange assembly is communicated with one inlet and outlet of the four-way valve, the first heat exchange pipe is communicated with one inlet and outlet of the throttling assembly, the second channel of the second heat exchange assembly is communicated with one inlet and outlet of the four-way valve, the second channel is communicated with the other inlet and outlet of the throttling assembly, and the two inlets and outlets of the compressor are communicated with the two inlets and outlets of the four-way valve.

[0018] In some embodiments, the third pipeline unit further comprises a second pump, the second pump is communicated with the second heat exchange pipe, and the second pump is communicated with the inlet and outlet of one valve assembly.

[0019] In addition, the air conditioning system according to the embodiments of the present application can further have the following additional technical features:

[0020] In some embodiments, the first heat exchange assembly comprises a first header, the first heat exchange pipes are multiple, the multiple first heat exchange pipes are directly or indirectly connected with the first header, the second heat exchange pipes are multiple, the multiple first heat exchange pipes and the second heat exchange pipes are arranged along the length direction of the first header.

[0021] In some embodiments, the first heat exchange assembly comprises a second header, a third header and a fourth header.

[0022] The first heat exchange pipes of the first heat exchange assembly are directly or indirectly connected with the second header, the second heat exchange pipes of the first heat exchange assembly are directly or indirectly connected with the third header, and the second heat exchange pipes of the first heat exchange assembly are directly or indirectly connected with the fourth header.

[0023] The first fins are multiple, the first fins, the first heat exchange pipes and the second heat exchange pipes of the first heat exchange assembly are arranged along the length direction of the first header.

[0024] In some embodiments, the air conditioning system further comprises a fan, when the air conditioning system is running, the airflow flows through the first heat exchange pipes and the second heat exchange pipes of the first heat exchange assembly at the same time; the valve assembly comprises a first valve and a second valve, the first valve and the second valve are stop valves, and the valve assembly further comprises at least one three-way valve.

[0025] According to the second aspect of the present application, a control method of an air conditioning system is provided, wherein the air conditioning system has a first working mode, a second working mode and a third working mode in a running state, and the control method comprises the following steps:

[0026] When the air conditioning system is in the first working mode, the valve assembly is controlled to connect the first pipe unit and the first channel of the second heat exchange assembly, the valve assembly is controlled to disconnect the first pipe unit and the third pipe unit, and the compressor of the second pipe unit is in a working state.

[0027] When the air conditioning system is in the second working mode, the valve assembly is controlled to connect the first pipe unit and the first channel of the second heat exchange assembly, the valve assembly is controlled to connect the first pipe unit and the third pipe unit, and the compressor of the second pipe unit is in a working state.

[0028] When the air conditioning system is in the third working mode, the valve assembly is controlled to connect the first pipe unit and the third pipe unit, and the valve assembly is controlled to disconnect the first pipe unit and the first channel of the second heat exchange assembly.

[0029] In some embodiments, the control method controls the operation state of the air conditioning system by setting temperature thresholds, specifically, three environment temperature thresholds, i.e., a first environment temperature threshold T1, a second environment temperature threshold T2, and a third environment temperature threshold T3, wherein T1

[0030] detecting an environment temperature T, comparing the environment temperature T with the environment temperature thresholds,

[0031] when the environment temperature T satisfies T≥T3, controlling the air conditioning system to operate in the first operation mode;

[0032] when the environment temperature T satisfies T2

[0033] when the environment temperature T satisfies T1≤T≤T2, controlling the air conditioning system to operate in the third operation mode.

[0034] In some embodiments, the valve assembly comprises a first valve and a second valve, and the first valve and the second valve are stop valves.

[0035] The first valve is installed in the first pipeline unit, and the second valve is installed in the third pipeline unit.

[0036] when T≥T3, the first valve is opened, the second valve is closed, and the system operates in the first operation mode;

[0037] when T2

[0038] when T1≤T≤T2, the first valve is closed, the second valve is opened, and the system operates in the third operation mode.

[0039] In some embodiments, the second environment temperature threshold T2 satisfies T2≤11℃, and the third environment temperature threshold T3 satisfies T3≥20℃.

[0040] According to a third aspect of the present application, an energy storage device is provided, comprising a box body, an air conditioning system, and an energy storage battery arranged in the box body, wherein the air conditioning system is used for temperature adjustment of the energy storage battery, and the air conditioning system is the air conditioning system of any one of the above embodiments. Since the energy storage device is provided with the air conditioning system of the above embodiments, the energy consumption of the entire energy storage device is lower, and more space is available for loading the energy storage battery, so that the energy storage capacity of the entire energy storage device is higher.

[0041] It should be understood that the above general description and the following detailed description are only exemplary and cannot limit the present application. BRIEF DESCRIPTION OF DRAWINGS

[0042] Figure 1 The overall structure schematic diagram of the air conditioning system of the present application;

[0043] Figure 2 The composition schematic diagram of each pipeline unit in the air conditioning system;

[0044] Figure 3 The flow direction schematic diagram of the fluid in the pipeline when the air conditioning system is in the first working mode;

[0045] Figure 4 The flow direction schematic diagram of the fluid in the pipeline when the air conditioning system is in the second working mode;

[0046] Figure 5 The flow direction schematic diagram of the fluid in the pipeline when the air conditioning system is in the third working mode;

[0047] Figure 6 The schematic diagram of the air conditioning system when the valve assembly includes a first valve and a second valve;

[0048] Figure 7 The three-dimensional structure schematic diagram of the first heat exchange assembly of the present application;

[0049] Figure 8 The planar structure schematic diagram of the first heat exchange assembly of the present application;

[0050] Figure 9 The side view structure schematic diagram of Figure 8 ;

[0051] Figure 10 The control flow chart of the control method of the present application.

[0052] Reference signs: first pipeline unit 1, second pipeline unit 2, third pipeline unit 3, first heat exchange assembly 4, second heat exchange assembly 5, valve assembly 6;

[0053] First pump 11, cooling assembly 12, distribution element 13, compressor 21, throttling assembly 22, four-way valve 23, fan 31, first heat exchange pipe 41, second heat exchange pipe 42, first fin 43, first header 44, second header 45, third header 46, fourth header 47, first passage 51, second passage 52, first three-way valve 61, second three-way valve 62, first valve 611, second valve 612. DETAILED DESCRIPTION

[0054] In order for those skilled in the art to more clearly understand the objects, technical solutions and advantages of the present application, the present application is further described below in conjunction with the drawings and examples.

[0055] It should be understood that the described embodiments are only some, not all, of the embodiments in this application. All other embodiments obtained by those skilled in the art based on the embodiments in this application without inventive effort are within the scope of protection of this application.

[0056] An air conditioning system, control method, and energy storage device according to embodiments of the present invention are described below with reference to the accompanying drawings.

[0057] like Figures 1-9 As shown, according to an embodiment of the present invention, the air conditioning system uses water cooling to cool the energy storage device, and specifically includes: a first pipeline unit 1, a second pipeline unit 2 and a third pipeline unit 3;

[0058] The first heat exchange component 4 has a first heat exchange tube 41 and a second heat exchange tube 42; in this embodiment, the first heat exchange component 4 is a tubular heat exchanger.

[0059] The second heat exchange component 5 has a first channel 51 and a second channel 52; in this embodiment, the second heat exchange component 5 is a plate / shell heat exchanger.

[0060] The first piping unit 1 cools the energy storage battery by exchanging heat with water; that is, the first piping unit 1 is a unit that directly cools the energy storage battery. Therefore, the first piping unit 1 includes a first pump 11 and at least one cooling component 12. The first pump 11 is used to provide a power source, while the cooling component 12 is used to directly cool the energy storage battery. The cooling component 12 mentioned here may be, but is not limited to, a cooling plate.

[0061] In addition, the first pipeline unit 1 may also include a liquid distribution element 13. The function of the liquid distribution element 13 is to distribute the water flowing into the first pipeline unit 1, so as to make the amount of water passing through each cooling component 12 more uniform, so as to ensure the cooling effect.

[0062] The first channel 51 of the second heat exchange component 5 is connected to one inlet and outlet of the first pump 11, and the first channel 51 is connected to one inlet and outlet of the cooling component 12. The other inlet and outlet of the cooling component 12 is connected to the other inlet and outlet of the first pump 11 to form a circulation path. Water enters from one inlet and outlet of the cooling component 12, cools the energy storage battery through the cooling component 12, and then flows out of the first pipeline unit 1 under the action of the first pump 11. The water flowing out undergoes heat exchange in the second pipeline unit 2 and / or the third pipeline unit 3, and after cooling down, it flows back into the first pipeline unit 1. This cycle is repeated to cool the energy storage battery.

[0063] The second unit 2 cools the water flowing out of the first pipeline unit 1 by exchanging heat between the refrigerant and water. Therefore, the second pipeline unit 2 includes a compressor 21 and a throttling component 22. The throttling component 22 can be an expansion valve; in other embodiments, it can also be a capillary tube. The first heat exchange tube 41 of the first heat exchange component 4 is connected to one inlet and outlet of the compressor 21, and to one inlet and outlet of the throttling component 22. The second channel 52 of the second heat exchange component 5 is connected to the other inlet and outlet of the compressor 21, and to the other inlet and outlet of the throttling component 22, forming a circulation path. The water flowing out of the first pipeline unit 1 enters the second heat exchange component 5, where it exchanges heat with the refrigerant. After cooling, the water circulates back into the first pipeline unit 1 as a cold source to cool the energy storage battery.

[0064] The valve assembly 6 includes multiple inlets and outlets, one of which is connected to the first pipeline unit 1, another of which is connected to the first channel 51 of the second heat exchange assembly 5, and yet another of which is connected to the third pipeline unit 3; the air conditioning system includes at least two valve assemblies.

[0065] It should be noted that valve assembly 6 can be two three-way valves, i.e. Figure 1 The first three-way valve 61 and the second three-way valve 62 shown are examples. Furthermore, the valve assembly can also consist of four valves, or two valves and one three-way valve. Specific valve combinations include, but are not limited to, these. Regardless of the valve combination, as long as it controls the fluid flow direction, allowing the fluid in the pipeline to flow in a predetermined direction, it is acceptable. Here, an embodiment using two valves and one three-way valve will be described:

[0066] like Figure 6 As shown, the two valves are a first valve 611 and a second valve 612, which are shut-off valves. The valve assembly also includes at least one three-way valve. The first valve 611 is located at the inlet of the first channel 51 of the second heat exchange assembly 5, and is used to control the connection / or closure of the first pipeline unit 1 and the first channel 51. The second valve 612 is located on the pipeline between the first pipeline unit 1 and the third pipeline unit 3, and is used to control the connection / or closure of the first pipeline unit 1 and the third pipeline unit 3.

[0067] The third pipe unit 3, the second heat exchange pipe 42 of the first heat exchange assembly 4 is communicated with one inlet and outlet of the valve assembly 6, the second heat exchange pipe 42 is communicated with the inlet and outlet of another valve assembly 6. The third pipe unit 3 is through the fan 31 and the second heat exchange pipe 42 of the first heat exchange assembly 4 to the water of the first pipe unit 1 directly cooling to reach the cooling purpose. The air flow is simultaneously flowed through the first heat exchange pipe 41 and the second heat exchange pipe 42 of the first heat exchange assembly 4 when the air conditioning system is running.

[0068] The first heat exchange assembly 4 further includes the first fin 43, part of the first fin 43 is connected with the first heat exchange pipe 41, part of the first fin 43 is connected with the second heat exchange pipe 42.

[0069] Some embodiments, the first pipe unit 1 includes the first refrigerant, the second pipe unit 2 includes the second refrigerant, the first heat exchange pipe 41 and the second heat exchange pipe 42 are not communicated, and / or the first channel 51 and the second channel 52 are not communicated.

[0070] Referring to Figure 1 Some embodiments, the second pipe unit 2 further includes the four-way valve 23, at this time, the first heat exchange pipe 41 of the first heat exchange assembly 4 is communicated with one inlet and outlet of the four-way valve 23, the first heat exchange pipe 41 is communicated with one inlet and outlet of the throttling assembly 22, the second channel 52 of the second heat exchange assembly 5 is communicated with one inlet and outlet of the four-way valve 23, the second channel 52 is communicated with another inlet and outlet of the throttling assembly 22, two inlets and outlets of the compressor 21 are communicated with two inlets and outlets of the four-way valve 23.

[0071] In winter, the temperature is low, the energy storage battery may exist the problem of abnormal charging and discharging due to too low temperature when it is just used, therefore, the energy storage device needs to be heated in this case, the function of the four-way valve 23 in the second pipe unit 2 is to reverse the refrigerant, thereby heating the energy storage device. Since the energy storage battery will continuously heat when it works normally, therefore, the heating process is short. After the energy storage battery can work normally and start to heat, it is cooled according to the set temperature threshold or demand. In addition, when the air conditioning system is not provided with the four-way valve 23, and the energy storage device needs to be heated in the above case, electric heating can also be used for heating.

[0072] In some embodiments, the third pipeline unit 3 further comprises a second pump (not shown in the figure), which is in communication with the second heat exchange pipe 42 and the inlet and outlet of one of the valve assemblies 6. The main function of the second pump is to increase the pressure of the water in the third pipeline unit 3. Since the first pipeline unit 1 is already provided with a first pump, the function of the second pump is not very necessary, and it can only be used when the cooling demand is large and the water flow rate in the first pipeline unit 1 and the third pipeline unit 3 needs to be fast.

[0073] During the use of the air conditioning system, the working states of the second pipeline unit 2 and the third pipeline unit 3 can be determined according to the ambient temperature, and the flow directions of the fluid in the air conditioning system in different working states are shown in Figures 3-5 More specifically, in winter or when the temperature of the energy storage battery is low and the heat dissipation cooling demand is small, the third pipeline unit 3 can be used alone to cool the energy storage battery. Since the energy consumption of the third pipeline unit 3 is low, the energy consumption of the air conditioner in this case can be effectively reduced. In summer or when the temperature of the energy storage battery is high and the heat dissipation demand is large, the second pipeline unit 2 can be used alone, or the second pipeline unit 2 and the third pipeline unit 3 can be used simultaneously to enhance the heat dissipation effect. In addition, the second pipeline unit 2 and the third pipeline unit 3 can also be used as backup systems.

[0074] In addition, the air conditioning system further comprises a temperature control system and a temperature alarm system. The temperature control system is used to control the working states of the second pipeline unit 2 and the third pipeline unit 3 according to the temperature in the battery cabin or the temperature of the battery, and the temperature alarm system is used to issue an audible and visual alarm when the temperature is higher than a preset temperature threshold.

[0075] Referring to Figures 7-9 In some embodiments, the first heat exchange assembly 4 comprises a first header 44, the first heat exchange pipes 41 are a plurality of, the plurality of first heat exchange pipes 41 are directly or indirectly connected with the first header 44, the second heat exchange pipes 42 are a plurality of, and the plurality of first heat exchange pipes 41 and the second heat exchange pipes 42 are arranged along the length direction of the first header 44.

[0076] In some embodiments, the first heat exchange assembly comprises a second header 45, a third header 46 and a fourth header 47.

[0077] The first heat exchange pipes 41 of the first heat exchange assembly 4 are directly or indirectly connected with the second header 45, the second heat exchange pipes 45 of the first heat exchange assembly 4 are directly or indirectly connected with the third header 46, and the second heat exchange pipes 45 of the first heat exchange assembly 4 are directly or indirectly connected with the fourth header 47.

[0078] The first fins 43 are multiple, and the first fins, the first heat exchange pipes 41 and the second heat exchange pipes 42 of the first heat exchange assembly 4 are arranged along the length direction of the first header 44.

[0079] It is worth mentioning that the first heat exchange assembly 4 can also be a micro-channel heat exchanger, and the heat exchange pipe of the micro-channel heat exchanger comprises multiple channels arranged along the length direction of the heat exchange pipe, and the multiple channels are arranged along the width direction of the heat exchange pipe. Compared with the traditional finned tube heat exchanger, the air side convective heat transfer coefficient of the micro-channel heat exchanger is higher, the energy efficiency of the machine is higher, the power consumption of the air conditioner can be reduced, and the utilization rate of the energy storage container can be improved. At the same time, the size of the machine mainly depends on the size of the heat exchanger, the micro-channel heat exchanger structure is more compact, and the air conditioning unit after adopting the micro-channel can be small, the internal volume of the container is limited, more space can be used to install more batteries, and the power storage capacity of the energy storage container can be improved.

[0080] The control method of the air conditioning system of the present application is described below, and the flow chart of the control method is shown in Figure 10 The air conditioning system has a first working mode, a second working mode and a third working mode in the running state, more specifically, the air conditioning system has a first working mode, a second working mode and a third working mode when performing the refrigeration function, and the control method comprises the following steps:

[0081] When the air conditioning system is in the first working mode, the valve assembly 6 is controlled to connect the first pipe unit 1 and the first channel 51 of the second heat exchange assembly 5, and the valve assembly 6 is controlled to disconnect the first pipe unit 1 and the third pipe unit 3, and the compressor 21 of the second pipe unit 2 is in working state;

[0082] When the air conditioning system is in the second working mode, the valve assembly 6 is controlled to connect the first pipe unit 1 and the first channel 51 of the second heat exchange assembly 5, and the valve assembly 6 is controlled to connect the first pipe unit 1 and the third pipe unit 3, and the compressor 21 of the second pipe unit 2 is in working state;

[0083] When the air conditioning system is in the third working mode, the valve assembly 6 is controlled to connect the first pipe unit 1 and the third pipe unit 3, and the valve assembly 6 is controlled to disconnect the first pipe unit 1 and the first channel 51 of the second heat exchange assembly 5.

[0084] In addition, since the energy storage battery continuously releases heat when working normally, the heating function of the air conditioning system is only used when the energy storage battery is abnormal at the beginning of charging and discharging. Since the energy storage battery continuously releases heat when working normally, the heating process is short. The function of the four-way valve 23 in the second pipeline unit 2 is to reverse the refrigerant, thereby heating the energy storage device. After the energy storage battery can work normally and release heat, it is cooled. In addition, when the air conditioning system does not have a four-way valve 23, and the energy storage device needs to be heated in the above-mentioned case, electric heating can also be used for heating.

[0085] In some embodiments, the control method controls the operating state of the air conditioning system by setting temperature thresholds, specifically: setting three environment temperature thresholds, i.e. a first environment temperature threshold T1, a second environment temperature threshold T2 and a third environment temperature threshold T3, T1

[0086] Detecting the environment temperature T, comparing the environment temperature T with the environment temperature threshold,

[0087] When the environment temperature T satisfies: T≥T3, the air conditioning system is controlled to operate in the first working mode;

[0088] When the environment temperature T satisfies: T2

[0089] When the environment temperature T satisfies: T1≤T≤T2, the air conditioning system is controlled to operate in the third working mode.

[0090] Referring to Figure 6 In some embodiments, the valve assembly includes a first valve 611 and a second valve 612, and the first valve 611 and the second valve 612 are stop valves. At this time, the first valve 611 is installed in the first pipeline unit 1, and the second valve 612 is installed in the third pipeline unit 3.

[0091] When T≥T3, the first valve 611 is opened, the second valve 612 is closed, and the system operates in the first working mode to cool the energy storage battery. At this time, the air conditioning system has high energy consumption, but the cooling effect is good, and the energy storage battery can be quickly and efficiently cooled.

[0092] When T2

[0093] When T1≤T≤T2, the first valve 611 is closed and the second valve 612 is opened, and the system operates in the third working mode. At this time, since the cooling requirement of the energy storage battery is low, the third pipeline unit 3 which is more energy-saving is selected to cool the energy storage battery.

[0094] When T

[0095] An energy storage device, comprising: a box body, an air conditioning system, and an energy storage battery arranged in the box body, wherein the air conditioning system is used for temperature adjustment of the energy storage battery, and the air conditioning system is the air conditioning system of any one of the above embodiments. Since the energy storage device is provided with the air conditioning system in the above embodiments, the energy consumption of the entire energy storage device is lower, and there is more space to load the energy storage battery, so the entire energy storage device has higher energy storage capacity.

[0096] Other configurations and operations of the heat exchanger according to the embodiments of the present application are known to those skilled in the art, and will not be described in detail here.

[0097] In the description of the present application, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the present application.

[0098] In addition, the terms "first" and "second" are only for descriptive purposes, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the technical features indicated. Therefore, the features defined with "first" and "second" can explicitly or implicitly include at least one of the features. In the description of the present application, the meaning of "a plurality of" is at least two, such as two, three, etc., unless otherwise specifically limited.

[0099] In the present application, unless specifically defined otherwise, the terms "mounting", "connected", "connecting", "fixed", "fixedly connected", "connection", "fixedly connected", "connected", "fixed", and the like should be construed broadly, for example, can be fixed connection, can also be detachable connection, or integral; can be mechanical connection, can also be electrical connection or communication with each other; can be directly connected, can also be indirectly connected through an intermediate medium, can be the internal communication of two elements or the interaction relationship between two elements, unless otherwise specifically defined. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0100] In the present application, unless specifically defined otherwise, the first feature is "on" or "under" the second feature. The first and second features can be in direct contact, or the first and second features can be in indirect contact through an intermediate medium. Moreover, the first feature "above", "over" and "on" the second feature can be that the first feature is directly above or obliquely above the second feature, or only indicates that the horizontal height of the first feature is higher than that of the second feature. The first feature "below", "under" and "under" the second feature can be that the first feature is directly below or obliquely below the second feature, or only indicates that the horizontal height of the first feature is less than that of the second feature.

[0101] In the description of the present application, the description of the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present application. In the present application, the illustrative description of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any appropriate manner in any one or more embodiments or examples. In addition, those skilled in the art can combine and combine different embodiments or features of different embodiments or examples described in the present application without contradiction.

[0102] Although the embodiments of the present application have been shown and described above, it should be understood that the above embodiments are exemplary and should not be construed as limiting the present application. Those skilled in the art can make changes, modifications, replacements and variations to the above embodiments within the scope of the present application.

Claims

1. An air conditioning system for an energy storage device, characterized in that: The air conditioning system includes a first piping unit, a second piping unit, and a third piping unit; A first heat exchange assembly, the first heat exchange assembly having a first heat exchange tube and a second heat exchange tube; A second heat exchange assembly, the second heat exchange assembly having a first channel and a second channel; The first piping unit includes a first pump and at least one cooling component. The first channel of the second heat exchange component is connected to one inlet and outlet of the first pump, the first channel is connected to one inlet and outlet of the cooling component, and the other inlet and outlet of the cooling component is connected to the other inlet and outlet of the first pump. The second piping unit includes a compressor and a throttling assembly. The first heat exchange tube of the first heat exchange assembly is connected to one inlet and outlet of the compressor, and the first heat exchange tube is connected to one inlet and outlet of the throttling assembly. The second channel of the second heat exchange assembly is connected to another inlet and outlet of the compressor, and the second channel is connected to another inlet and outlet of the throttling assembly. The throttling assembly is an expansion valve or a capillary tube. The valve assembly includes multiple inlets and outlets, one of which is connected to a first piping unit, another of which is connected to a first channel of a second heat exchange component, and yet another of which is connected to a third piping unit; the air conditioning system includes at least two valve assemblies. The third piping unit has a second heat exchange tube of the first heat exchange assembly connected to the inlet and outlet of one of the valve assemblies, and the second heat exchange tube connected to the inlet and outlet of another valve assembly. The first heat exchange assembly further includes a first fin, a portion of which is connected to the first heat exchange tube, and a portion of which is connected to the second heat exchange tube; The first piping unit includes a first refrigerant, the second piping unit includes a second refrigerant, the first heat exchange tube and the second heat exchange tube are not connected, and / or the first channel and the second channel are not connected.

2. The air conditioning system according to claim 1, characterized in that: The second piping unit also includes a four-way valve. The first heat exchange tube of the first heat exchange assembly is connected to one inlet and outlet of the four-way valve. The first heat exchange tube is connected to one inlet and outlet of the throttling assembly. The second channel of the second heat exchange assembly is connected to one inlet and outlet of the four-way valve. The second channel is connected to the other inlet and outlet of the throttling assembly. The two inlets and outlets of the compressor are connected to the two inlets and outlets of the four-way valve.

3. The air conditioning system according to claim 1, characterized in that: The third piping unit also includes a second pump, which is connected to the second heat exchange tube and to the inlet and outlet of one of the valve assemblies.

4. The air conditioning system according to any one of claims 1-3, characterized in that: The first heat exchange assembly includes a first manifold, and there are multiple first heat exchange tubes. The multiple first heat exchange tubes are directly or indirectly connected to the first manifold. There are also multiple second heat exchange tubes, and the multiple first heat exchange tubes and the second heat exchange tubes are spaced apart along the length of the first manifold.

5. The air conditioning system according to claim 4, characterized in that: The first heat exchange assembly includes a second manifold, a third manifold, and a fourth manifold; The first heat exchange tube of the first heat exchange component is directly or indirectly connected to the second manifold; the second heat exchange tube of the first heat exchange component is directly or indirectly connected to the third manifold; and the second heat exchange tube of the first heat exchange component is directly or indirectly connected to the fourth manifold. The first fin is multiple, and the first heat exchange tube and the second heat exchange tube of the first heat exchange assembly are spaced apart along the length direction of the first manifold.

6. The air conditioning system according to claim 1, characterized in that: The system includes a fan, and when the air conditioning system is running, the airflow flows through the first heat exchange tube and the second heat exchange tube of the first heat exchange component simultaneously; the valve assembly includes a first valve and a second valve, the first valve and the second valve being shut-off valves, and the valve assembly also includes at least one three-way valve.

7. A control method for an air conditioning system, characterized in that: The air conditioning system is any one of claims 1-3 or the air conditioning system described in claim 5. The air conditioning system has a first operating mode, a second operating mode, and a third operating mode during operation. The control method includes the following steps: When the air conditioning system is in the first working mode, the valve assembly is controlled to connect the first channel of the first pipeline unit and the second heat exchange assembly, and the valve assembly is controlled to disconnect the first pipeline unit and the third pipeline unit, and the compressor of the second pipeline unit is in working state. When the air conditioning system is in the second working mode, the valve assembly is controlled to connect the first channel of the first pipeline unit and the second heat exchange assembly, and the valve assembly is controlled to connect the first pipeline unit and the third pipeline unit, and the compressor of the second pipeline unit is in working state; When the air conditioning system is in the third operating mode, the valve assembly is controlled to connect the first pipeline unit and the third pipeline unit, and the valve assembly is controlled to disconnect the first channel between the first pipeline unit and the second heat exchange assembly.

8. The control method according to claim 7, characterized in that: Three ambient temperature thresholds are set: the first ambient temperature threshold T1, the second ambient temperature threshold T2, and the third ambient temperature threshold T3, where T1 < T2 < T3. Detect the ambient temperature T, and compare the ambient temperature T with the ambient temperature threshold. When the ambient temperature T satisfies: T≥T3, the air conditioning system is controlled to operate in the first working mode; When the ambient temperature T satisfies the condition that T2 < T < T3, the air conditioning system is controlled to operate in the second working mode. When the ambient temperature T satisfies T1≤T≤T2, the air conditioning system is controlled to operate in the third working mode.

9. The control method according to claim 8, characterized in that: The valve assembly includes a first valve and a second valve, wherein the first valve and the second valve are shut-off valves; The first valve is installed in the first piping unit, and the second valve is installed in the third piping unit; When T≥T3, the first valve is opened and the second valve is closed, and the system operates in the first working mode; When T2 < T < T3, open the first valve and open the second valve, and the system operates in the second working mode; When T1≤T≤T2, the first valve is closed and the second valve is opened, and the system operates in the third working mode.

10. The control method according to claim 8 or 9, characterized in that: The second ambient temperature threshold T2 has a value range that satisfies: T2≤11℃; the third ambient temperature threshold T3 has a value range that satisfies: T3≥20℃.

11. An energy storage device, characterized in that: It includes a housing, an air conditioning system, and an energy storage battery disposed within the housing. The air conditioning system is used to regulate the temperature of the energy storage battery. The air conditioning system is the air conditioning system described in any one of claims 1-3 or claim 5 or 6.

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