Energy storage device, photovoltaic-energy storage system, and charging network

Abstract

The present application relates to the technical field of energy, and provides an energy storage device, a photovoltaic-energy storage system, and a charging network. The energy storage device comprises a thermal management module, a battery module, a power module and a radiator module. The thermal management module comprises a housing, and a valve assembly, a first evaporator and a condenser which are arranged in the housing, wherein the housing comprises a plurality of coolant interfaces. Two coolant ports of the first evaporator are connected to the valve assembly, and two coolant ports of the condenser are connected between the valve assembly and one of the coolant interfaces. The battery module comprises a first heat exchange plate, the power module comprises a second heat exchange plate, the radiator module comprises a radiator, and the first heat exchange plate, the second heat exchange plate and the radiator are connected to the valve assembly by means of the corresponding coolant interfaces. The energy storage device can achieve efficient regulation and control of the temperature of a battery, thereby improving the operation reliability of the photovoltaic-energy storage system and the charging network using the energy storage device.

Description

Energy storage device, photovoltaic storage system and charging network

[0001] CROSS-REFERENCE TO RELATED APPLICATIONS

[0002] This application claims priority to the Chinese patent application filed with the State Intellectual Property Office of the People's Republic of China on August 25, 2023, with application number 202311086505.X and application name "A kind of energy storage device, photovoltaic storage system and charging network", the entire contents of which are incorporated by reference into this application. Technical Field

[0003] The present application relates to the field of energy technology, and in particular to an energy storage device, a photovoltaic storage system, and a charging network. Background Art

[0004] With the continuous development and widespread application of clean energy, energy storage devices capable of storing electrical energy have begun to be widely used in various fields. Currently, there is an increasing number of large-scale energy storage devices at the cabinet or container level, which can accommodate more batteries and thus improve the energy storage capacity of energy storage devices.

[0005] In energy storage devices, multiple batteries are connected in series and parallel and housed within a housing to effectively protect the batteries. During actual use, the batteries must be kept within a normal temperature range to ensure charge and discharge performance and safety. For this reason, energy storage devices typically incorporate a heat dissipation system to regulate the battery temperature. However, heat dissipation systems using traditional air cooling are inefficient and no longer meet the efficiency requirements for battery temperature control in current energy storage devices.

[0006] Summary of the Invention

[0007] The present application provides an energy storage device, a photovoltaic storage system, and a charging network that can achieve efficient regulation of battery temperature.

[0008] In a first aspect, the present application provides an energy storage device, which may include a thermal management module, a battery module, a power module, and a radiator module. The thermal management module includes a housing, a valve body assembly, a first evaporator, and a condenser disposed within the housing, and the housing includes multiple coolant interfaces. The two coolant ports of the first evaporator are connected to the valve body assembly, and the two coolant ports of the condenser are connected between the valve body assembly and a coolant interface. Thus, the coolant passages between the evaporator and the condenser and other modules can be connected or disconnected through the valve body assembly according to the specific operating mode requirements of the energy storage device. The battery module includes a first heat exchange plate, which is connected to the valve body assembly via two coolant interfaces. In addition, the power module includes a second heat exchange plate, which is connected to the valve body assembly via two coolant interfaces. It is worth mentioning that in the present application, the second heat exchange plate and the first heat exchange plate can be connected to two different coolant interfaces, or the second heat exchange plate and the first heat exchange plate can be connected in series between the two coolant interfaces. The radiator module includes a radiator, which is connected to the valve body assembly via two coolant interfaces. The radiator and the first heat exchange plate are connected to two different coolant interfaces, and the radiator and the second heat exchanger are connected to two different coolant interfaces, so that the first radiator, the first heat exchange plate and the second heat exchange plate are all connected to the coolant circulation loop of the thermal management module through the coolant interface. In the energy storage device provided in the present application, by integrating the various structures of the thermal management module into a shell, the integration of the thermal management module can be effectively improved, which facilitates the connection between the thermal management module and other modules and saves the pipes connecting the thermal management module and other modules, thereby helping to reduce the cost of the energy storage device. In addition, during the operation of the energy storage device, the corresponding coolant interface and the coolant passage between the corresponding coolant interface and the evaporator or condenser can be connected or disconnected by the valve body assembly, so that in any mode, heat can be exchanged with the first heat exchange plate through the circulation of the coolant, thereby effectively improving the temperature control efficiency of the first heat exchange plate, thereby improving the temperature control efficiency of the battery in the battery module, which is conducive to improving the operational reliability of the energy storage device.

[0009] In a possible implementation of the present application, the thermal management system further includes a first throttle valve, which is disposed in the shell. The energy storage device further includes a compressor, which can be disposed in the shell, which is conducive to improving the integration of the energy storage device. Alternatively, the compressor can be disposed outside the shell, and the shell further includes two refrigerant interfaces, and the compressor is connected between the two refrigerant interfaces, which can improve the flexibility of the compressor setting position. In addition, the compressor, the first evaporator, the first throttle valve and the condenser are connected in sequence to form a refrigerant circulation loop. The refrigerant circulation loop can achieve heat exchange with the first heat exchange plate by exchanging heat with the coolant flowing through the first evaporator or condenser, thereby achieving regulation of the battery temperature.

[0010] In a possible implementation of the present application, the thermal management module also includes a dehumidification module, which is arranged inside the shell, or the dehumidification module is arranged outside the shell. The dehumidification module includes a second evaporator and a second throttle valve, and the compressor, the second evaporator, the second throttle valve and the condenser are connected in sequence to form another refrigerant circulation loop in the energy storage device. Since the temperature of the second evaporator will be relatively low during the circulation of the refrigerant in the circulation loop, when the ambient humidity is high and the temperature of the second evaporator is lower than the dew point temperature of the air, the water vapor in the air condenses into water droplets, which are discharged through the drainage pipe to reduce the humidity in the energy storage device. Since the temperature of the second evaporator is relatively low, it can also reduce the temperature of the air in the energy storage device, which is beneficial for keeping the battery in a lower temperature environment.

[0011] In one possible implementation of the present application, the energy storage device further includes a bypass valve connected in parallel with the compressor. Thus, when the compressor is in heating mode, the bypass valve is also open to decompress the compressor, thereby utilizing the heat generated by the compressor itself to heat the battery. When the compressor is in cooling mode, the bypass valve is closed. Since the heat generated by the compressor itself can meet the battery heating requirements, the heating device in the energy storage device can be removed, which helps improve the energy efficiency of the energy storage device.

[0012] In one possible implementation of the present application, a valve assembly is connected between the first heat exchange plate and the first evaporator to open or close the passage between the first heat exchange plate and the first evaporator. When the energy storage device operates in high-temperature mode, the valve assembly can open the passage between the first heat exchange plate and the first evaporator, cooling the first heat exchange plate through the first evaporator and thereby dissipating heat from the battery.

[0013] In one possible implementation of the present application, the valve assembly is further connected between the first heat exchange plate and the radiator to open or close the passage between the first heat exchange plate and the radiator. Thus, when the energy storage device operates in a suitable temperature mode, the valve assembly can open the passage between the first heat exchange plate and the radiator, cooling the first heat exchange plate through the radiator, thereby dissipating heat from the battery.

[0014] In one possible implementation of the present application, the valve assembly is further connected between the first and second heat exchange plates to open or close the passage between them. When the energy storage device operates in low-temperature mode, the valve assembly can connect the passage between the first and second heat exchange plates, allowing the heat generated by the power circuit to heat the first heat exchange plate for heat recovery.

[0015] In a possible implementation of the present application, the valve body assembly is also connected between the first heat exchange plate and the condenser, and is used to connect or disconnect the passage between the first heat exchange plate and the condenser. At this time, the passage between the first heat exchange plate and the condenser can be connected through the valve body assembly, so that the first heat exchange plate is heated by the heat generated by the condenser, thereby allowing the energy storage device to operate in heat pump mode.

[0016] In a possible implementation of the present application, the valve body assembly is also connected between the second heat exchange plate and the radiator, and is used to connect or disconnect the passage between the second heat exchange plate and the radiator. When the valve body assembly connects the passage between the second heat exchange plate and the radiator, the second heat exchange plate can be cooled through the radiator, thereby achieving heat dissipation of the power circuit.

[0017] In a possible implementation of the present application, the valve body assembly is also connected between the radiator and the condenser, and is used to connect or disconnect the passage between the radiator and the condenser. When the valve body assembly connects the passage between the radiator and the condenser, the condenser can be cooled through the radiator.

[0018] In one possible implementation of the present application, the thermal management module further includes an electric heater, which can be connected in series to the path connected to the first heat exchange plate. Thus, when the energy storage device operates in a low-temperature environment, the electric heater can be used to heat the coolant flowing through the first heat exchange plate, thereby heating the first heat exchange plate and, in turn, increasing the temperature of the battery.

[0019] In one possible implementation of the present application, the valve body assembly may include a valve body, which may include multiple valve ports, each of which can be used to connect to a first evaporator, a condenser or at least one coolant interface, so that the passage between the various coolant interfaces can be connected or disconnected through the valve body, or the passage between each coolant interface and the first evaporator or condenser can be connected or disconnected, so that the energy storage device can operate in multiple different modes.

[0020] In one possible implementation of the present application, the valve body assembly includes at least two valve bodies, each valve body includes multiple valve ports, and each valve port is used to connect to the first evaporator, the condenser or at least one coolant interface, so that the passages between the various coolant interfaces can be connected or disconnected through the at least two valve bodies, or the passages between each coolant interface and the first evaporator or condenser can be connected or disconnected, so that the energy storage device can operate in multiple different modes.

[0021] In a second aspect, this application also provides a photovoltaic storage system, which may include a power generation device, a power conversion device, and the energy storage device described in the first aspect. The power conversion device is connected between the power generation device and the energy storage device, and the power generation device is used to store the generated electrical energy in the battery of the energy storage device through the power conversion device. By using the above-mentioned energy storage device, the operational reliability of the photovoltaic storage system can be effectively improved.

[0022] In a third aspect, the present application further provides a charging network, which may include charging piles and the energy storage device described in the first aspect above, wherein the charging piles are electrically connected to the energy storage device, and the energy storage device is used to provide electrical energy to the charging piles. By applying the above energy storage device, the operational reliability of the charging network can be effectively improved. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] FIG1 is a structural block diagram of an energy storage device provided in an embodiment of the present application;

[0024] FIG2a is a schematic structural diagram of an energy storage device provided in an embodiment of the present application;

[0025] FIG2 b is another schematic structural diagram of an energy storage device provided in an embodiment of the present application;

[0026] FIG3 is a schematic diagram of a specific structure of an energy storage device provided in an embodiment of the present application;

[0027] FIG4 is a schematic diagram of an operating mode of the energy storage device shown in FIG3 ;

[0028] FIG5 is a schematic diagram of another operating mode of the energy storage device shown in FIG3 ;

[0029] FIG6 is a schematic diagram of another operating mode of the energy storage device shown in FIG3 ;

[0030] FIG7 is a schematic diagram of another operating mode of the energy storage device shown in FIG3 ;

[0031] FIG8 is a schematic diagram of another operating mode of the energy storage device shown in FIG3 ;

[0032] FIG9 is a schematic diagram of another specific structure of the energy storage device provided in an embodiment of the present application;

[0033] FIG10 is a schematic diagram of another specific structure of the energy storage device provided in an embodiment of the present application;

[0034] FIG11 is a schematic diagram of another specific structure of the energy storage device provided in an embodiment of the present application;

[0035] FIG12 is a schematic diagram of another specific structure of the energy storage device provided in an embodiment of the present application;

[0036] FIG13 is a schematic diagram of an operating mode of the energy storage device shown in FIG12 ;

[0037] FIG14 is a schematic diagram of another operating mode of the energy storage device shown in FIG12 ;

[0038] FIG15 is a schematic diagram of another operating mode of the energy storage device shown in FIG12 ;

[0039] FIG16 is a schematic diagram of another specific structure of the energy storage device provided in an embodiment of the present application;

[0040] FIG17 is a schematic diagram of an operating mode of the energy storage device shown in FIG16 ;

[0041] FIG18 is a schematic diagram of another operating mode of the energy storage device shown in FIG16 ;

[0042] FIG19 is a schematic diagram of another operating mode of the energy storage device shown in FIG16 ;

[0043] FIG20 is a schematic diagram of another operating mode of the energy storage device shown in FIG16 ;

[0044] FIG21 is a schematic diagram of another operating mode of the energy storage device shown in FIG16 ;

[0045] FIG22 is a schematic diagram of another specific structure of the energy storage device provided in an embodiment of the present application;

[0046] FIG23 is a schematic diagram of another specific structure of the energy storage device provided in an embodiment of the present application;

[0047] FIG24 is a schematic diagram of another specific structure of the energy storage device provided in an embodiment of the present application;

[0048] FIG25 is a schematic diagram of another specific structure of the energy storage device provided in an embodiment of the present application;

[0049] FIG26 is a schematic diagram of another specific structure of the energy storage device provided in an embodiment of the present application;

[0050] FIG27 is a schematic diagram of another specific structure of the energy storage device provided in an embodiment of the present application;

[0051] FIG28 is a schematic diagram of another specific structure of the energy storage device provided in an embodiment of the present application;

[0052] FIG29 is a schematic diagram of another specific structure of the energy storage device provided in an embodiment of the present application;

[0053] FIG30 is a schematic diagram of an operating mode of the energy storage device shown in FIG29 ;

[0054] FIG31 is a schematic diagram of another operating mode of the energy storage device shown in FIG29 ;

[0055] FIG32 is a schematic diagram of another operating mode of the energy storage device shown in FIG29 ;

[0056] FIG33 a is a schematic diagram of another operating mode of the energy storage device shown in FIG29 ;

[0057] FIG33 b is a schematic diagram of another operating mode of the energy storage device shown in FIG29 ;

[0058] FIG34 is a schematic diagram of another operating mode of the energy storage device shown in FIG29 ;

[0059] FIG35 is a schematic diagram of another specific structure of the energy storage device provided in an embodiment of the present application;

[0060] FIG36 is a schematic diagram of another specific structure of the energy storage device provided in an embodiment of the present application;

[0061] FIG37 is a schematic diagram of another specific structure of the energy storage device provided in an embodiment of the present application;

[0062] FIG38 is a schematic diagram of another specific structure of the energy storage device provided in an embodiment of the present application;

[0063] FIG39 is a schematic diagram of an operating mode of the energy storage device shown in FIG38 ;

[0064] FIG40 is a schematic diagram of another operating mode of the energy storage device shown in FIG38 ;

[0065] FIG41 is a schematic diagram of another operating mode of the energy storage device shown in FIG38 ;

[0066] FIG42 a is a schematic diagram of another operating mode of the energy storage device shown in FIG38 ;

[0067] FIG42 b is a schematic diagram of another operating mode of the energy storage device shown in FIG38 ;

[0068] FIG43 is a schematic diagram of another operating mode of the energy storage device shown in FIG38 ;

[0069] FIG44 is a schematic diagram of another specific structure of the energy storage device provided in an embodiment of the present application;

[0070] FIG45 is a schematic diagram of another specific structure of the energy storage device provided in an embodiment of the present application;

[0071] FIG46 is a schematic diagram of another specific structure of the energy storage device provided in an embodiment of the present application;

[0072] FIG47 is a schematic diagram of another specific structure of the energy storage device provided in an embodiment of the present application;

[0073] FIG48 is a schematic diagram of an operating mode of the energy storage device shown in FIG47 ;

[0074] FIG49 is a schematic diagram of another operating mode of the energy storage device shown in FIG47 ;

[0075] FIG50 is a schematic diagram of another operating mode of the energy storage device shown in FIG47;

[0076] FIG51 a is a schematic diagram of another operating mode of the energy storage device shown in FIG47 ;

[0077] FIG51 b is a schematic diagram of another operating mode of the energy storage device shown in FIG47 ;

[0078] FIG52 is a schematic diagram of another operating mode of the energy storage device shown in FIG47 ;

[0079] FIG53 is a schematic diagram of another specific structure of the energy storage device provided in an embodiment of the present application;

[0080] FIG54 is a schematic diagram of another specific structure of the energy storage device provided in an embodiment of the present application;

[0081] FIG55 is a schematic diagram of another specific structure of the energy storage device provided in an embodiment of the present application;

[0082] FIG56 is a schematic diagram of another specific structure of the energy storage device provided in an embodiment of the present application;

[0083] FIG57 is a schematic diagram of another specific structure of the energy storage device provided in an embodiment of the present application;

[0084] FIG58 is a schematic diagram of another specific structure of the energy storage device provided in an embodiment of the present application;

[0085] FIG59 is a schematic diagram of another specific structure of the energy storage device provided in an embodiment of the present application;

[0086] FIG60 is a schematic structural diagram of a solar storage system provided in an embodiment of the present application;

[0087] Figure 61 is a structural diagram of a charging network provided in an embodiment of the present application. DETAILED DESCRIPTION

[0088] In order to make the purpose, technical solutions and advantages of the present application clearer, the embodiments of the present application will be further described in detail with reference to the accompanying drawings. However, the example embodiments can be implemented in various forms and should not be construed as being limited to the embodiments set forth herein. The same reference numerals in the figures represent the same or similar structures, and thus their repeated description will be omitted. The words expressing position and direction described in the embodiments of the present application are all explained using the accompanying drawings as examples, but changes may be made as needed, and the changes made are all included in the scope of protection of the present application. The drawings in the embodiments of the present application are only used to illustrate the relative position relationship and do not represent the true proportion.

[0089] It should be noted that the following description sets forth specific details to facilitate understanding of the present application. However, the embodiments of the present application can be implemented in a variety of other ways than those described herein, and those skilled in the art can make similar generalizations without violating the connotations of the embodiments of the present application. Therefore, the present application is not limited to the specific embodiments disclosed below.

[0090] To facilitate understanding of the energy storage device provided in the embodiments of this application, the following first introduces its application scenarios. The energy storage device provided in the embodiments of this application can be used in, but is not limited to, five types of industrial and commercial energy storage scenarios, including small-scale industrial and commercial (such as small factories, etc.), medium-sized industrial and commercial, large-scale industrial and commercial, photovoltaic storage and charging stations, and small and medium-sized microgrids (such as islands, etc.), as well as three types of power station scenarios, including wind and solar energy storage power stations, grid energy storage power stations, and large microgrids, for storing and releasing electrical energy.

[0091] At present, according to the different requirements of the application scenario for power consumption, energy storage equipment can also be divided into module-level energy storage equipment, cabinet-level energy storage equipment and container-level energy storage equipment. Referring to Figure 1, Figure 1 is a structural block diagram of an energy storage device 100 provided in an embodiment of the present application. The energy storage device 100 may include a box body 10 and a battery module 2 arranged in the box body. The battery in the battery module 2 is the basic unit for the energy storage device to realize the storage and release of electric energy. During the charging and discharging process of the battery, a lot of heat will be generated. In order to ensure the charging and discharging performance and safety of the battery, it is usually necessary to cool the battery.

[0092] Current energy storage devices primarily utilize air cooling and liquid cooling to dissipate heat from batteries. Since air cooling relies primarily on air flow to remove heat from the battery surface, its heat dissipation efficiency is low. In conditions of high ambient temperatures or when the battery generates significant heat, air cooling cannot meet the battery's heat dissipation requirements. Liquid cooling, on the other hand, relies primarily on coolant (such as water) flowing through coolant pipes to dissipate heat from the battery, offering higher heat dissipation efficiency. Consequently, an increasing number of energy storage devices are adopting liquid cooling to dissipate heat from the battery.

[0093] In view of this, the energy storage device provided in the embodiments of the present application can dissipate heat from the battery using liquid cooling in various operating modes to achieve efficient regulation of the battery temperature, which is beneficial for improving the energy efficiency of the energy storage device. To make the objectives, technical solutions, and advantages of this application more clear, the present application will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0094] Referring to Figure 2a, Figure 2a is a schematic diagram of the structure of an energy storage device provided in an embodiment of the present application. In the present application, the energy storage device 100 may include a thermal management module 1, a battery module 2, a power module 3 and a radiator module 4. The thermal management module 1 includes a shell 101 and a valve body assembly 102, a first evaporator 103 and a condenser 105 arranged in the shell 101. The shell 101 includes a plurality of coolant interfaces 1011. Among them, the coolant interface 1011 can be used to connect to a coolant pipe. The coolant pipe refers to a pipe for the circulation of coolant, wherein the coolant can be but is not limited to water or ethylene glycol.

[0095] In the energy storage device 100 provided in the embodiment of the present application, the two coolant ports of the first evaporator 103 are connected to the valve assembly 102, and the two coolant ports of the condenser 105 are connected between the valve assembly 102 and a coolant interface 1011. The valve assembly 102 can then be used to connect or disconnect the coolant passages between the first evaporator 103 and the condenser 105 and other structures.

[0096] The battery module 2 includes a battery 201 and a first heat exchange plate 202. The battery 201 is in thermal contact with the first heat exchange plate 202, which is connected to the valve assembly 102 via two coolant ports 1011. In practice, the liquid inlet and outlet of the first heat exchange plate 202 are each connected to the valve assembly 102 via a coolant port 1011. The valve assembly 102 can then be used to connect or disconnect the coolant passage between the first heat exchange plate 202 and other structures.

[0097] It is worth mentioning that in the energy storage device provided in the embodiment of the present application, the first heat exchange plate 202 can be a cold plate or other types of heat exchangers such as an immersion heat exchanger.

[0098] The power module 3 includes a power circuit 301 and a second heat exchange plate 302, wherein the power circuit 301 may include a power conversion system (PCS), which is connected to the battery 201 and is used to control the charging or discharging function of the battery 201. The energy storage converter can specifically be a DC-AC converter or a DC-DC converter. That is, the energy storage converter can include a DC-AC converter or a DC-DC converter, a control unit, etc. In specific applications, the specific type of the energy storage converter can be reasonably selected according to actual needs, and this application does not limit this. In addition, in the embodiment of the present application, the power circuit 301 may also include a direct current converter (DCDC), etc.

[0099] It is worth noting that in the energy storage device provided in the embodiments of the present application, the second heat exchange plate 302 can be a cold plate or other type of heat exchanger, such as an immersion heat exchanger. Furthermore, when both the first heat exchange plate 202 and the second heat exchange plate 302 are immersion evaporators, they can also be integrated, i.e., the battery 201 and the power circuit 301 can be immersed in the same heat exchanger.

[0100] The second heat exchange plate 302 is in thermal contact with the power circuit 301, dissipating heat from the power circuit 301 through the circulation of coolant within the second heat exchange plate 302. When connecting the second heat exchange plate 302 to the thermal management module 1, the second heat exchange plate 302 is connected to the valve body assembly 102 via two coolant interfaces 1011. Specifically, the liquid inlet and liquid outlet of the second heat exchange plate 302 are each connected to the valve body assembly 102 via a coolant interface 1011. The valve body assembly 102 can then be used to connect or disconnect the coolant passage between the second heat exchange plate 302 and other structures. It is worth mentioning that in the energy storage device 100 shown in Figure 2a, the second heat exchange plate 302 and the first heat exchange plate 202 are connected to two different coolant interfaces 1011, so that the second heat exchange plate 302 is connected to the thermal management module 1 through the two coolant interfaces 1011, while the first heat exchange plate 202 is connected to the thermal management module 1 through the other two coolant interfaces 1011, so as to improve the flexibility of the setting position of the first heat exchange plate 202 and the second heat exchange plate 302.

[0101] Since the power circuit 301 generates a large amount of heat during operation, when the temperature of the battery 201 is low, the valve body assembly 102 can be connected to the passage between the first heat exchange plate 202 and the second heat exchange plate 302, so that the heat generated by the power circuit 301 can be transferred to the surface of the battery 201 through the coolant passage between the first heat exchange plate 202 and the second heat exchange plate 302, thereby making rational use of the waste heat generated by the power circuit 301 and achieving efficient use of heat.

[0102] The radiator module 4 includes a radiator 401, which is also connected to the valve body assembly 102 via two coolant interfaces 1011. In a specific implementation, the liquid inlet and liquid outlet of the radiator 401 are respectively connected to the valve body assembly 102 via a coolant interface 1011. The valve body assembly 102 can then be used to connect or disconnect the coolant passage between the radiator 401 and other structures. It is worth mentioning that in the energy storage device 100 shown in Figure 2a, the radiator 401 and the first heat exchange plate 202 are connected to two different coolant interfaces 1011, and the radiator 401 and the second heat exchange plate 302 are connected to two different coolant interfaces 1011, thereby improving the flexibility of the location of the radiator 401, the first heat exchange plate 202, and the second heat exchange plate 302.

[0103] In the embodiment of the present application, when the valve body assembly 102 connects the passage between the radiator 401 and the first heat exchange plate 202, heat from the first heat exchange plate 202 can be transferred to the radiator 401 via the coolant pipe, thereby enabling the radiator 401 to dissipate heat from the battery. Furthermore, when the valve body assembly 102 connects the passage between the radiator 401 and the second heat exchange plate 302, heat from the second heat exchange plate 302 can be transferred to the radiator 401 via the coolant pipe, thereby enabling the radiator 401 to dissipate heat from the power circuit 301, thereby maintaining the power circuit 301 within a normal operating temperature range.

[0104] In addition, the radiator module 4 may further include a fan 402 . The fan 402 is disposed close to the radiator 401 . The fan 402 may be used to accelerate the circulation speed of air flowing through the radiator 401 , thereby improving the heat dissipation performance of the radiator 401 .

[0105] In the energy storage device 100 shown in FIG2a , the thermal management module 1 further includes a first throttle valve 104 disposed within the housing 101 . Furthermore, the housing 101 includes two refrigerant ports 1012 , which can be connected to refrigerant pipes. Refrigerant pipes are pipes for circulating refrigerant, which may be, but are not limited to, Freon or liquid ammonia compounds.

[0106] In the energy storage device 100 shown in Figure 2a, the energy storage device 100 also includes a compressor 5, which is arranged outside the shell 101 of the thermal management module 1. The compressor 5 is connected between the two refrigerant interfaces 1012, and the compressor 5, the condenser 105, the first throttle valve 104 and the first evaporator 103 are connected in sequence through refrigerant pipes to form a refrigerant circulation loop.

[0107] In addition, reference may be made to FIG2b, which is another schematic diagram of the structure of the energy storage device 100 provided in this application. In FIG2b, the compressor 5 can be accommodated in the housing 101 of the thermal management module 1, and the compressor 5, the condenser 105, the first throttle valve 104, and the first evaporator 103 are still connected in sequence through the refrigerant pipe to form a refrigerant circulation loop, which is conducive to improving the integration of the energy storage device 100. The other structures of the energy storage device 100 shown in FIG2b can be set with reference to the energy storage device 100 shown in FIG2a above, and will not be described in detail here.

[0108] Since the energy storage device 100 provided in the embodiment of the present application includes both a circuit formed by connecting refrigerant pipes and a circuit formed by connecting coolant pipes, in order to facilitate the distinction between different pipes in the various drawings of the embodiment of the present application, the coolant pipes are represented by dotted lines and the refrigerant pipes are represented by solid lines.

[0109] In the energy storage device 100 provided in the embodiment of the present application, by integrating the various structures of the thermal management module 1 into a housing 101, the integration level of the thermal management module 1 can be effectively improved, which facilitates the connection between the thermal management module 1 and other modules and saves the pipes connecting the thermal management module 1 and other modules, thereby helping to reduce the cost of the energy storage device 100. In addition, during operation, the energy storage device 100 can effectively regulate the connection and disconnection states of different coolant interfaces 1011 through the valve body assembly 102, thereby flexibly adjusting the connection states of different modules. When the energy storage device 100 operates in various modes, the temperature of the battery 201 can be regulated by circulating the coolant between the modules connected by the coolant pipes for heat exchange. This can effectively improve the efficiency of the temperature regulation of the battery 201, thereby helping to improve the operating energy efficiency of the energy storage device 100.

[0110] The above describes the basic design principles of the heat dissipation system architecture of the energy storage device 100 provided in this application. Next, the specific implementation of the energy storage device 100 and the operating mode of the energy storage device 100 under different operating conditions will be described in conjunction with specific embodiments to facilitate understanding of the temperature control method of the battery 201 in the energy storage device 100.

[0111] First, refer to Figure 3, which is a schematic diagram of a specific structure of the energy storage device 100 provided in an embodiment of the present application. In the energy storage device 100, the valve body assembly 102 of the thermal management module 1 includes two four-way valves, and each four-way valve includes four valve ports. For ease of distinction, the two four-way valves can be respectively recorded as four-way valve 1021a and four-way valve 1021b. The first evaporator 103 is connected between the four-way valve 1021a and the four-way valve 1021b, and the condenser 105 is connected between the four-way valve 1021b and a coolant interface 1011. The other valve ports of the four-way valve 1021a and the four-way valve 1021b are respectively connected to a coolant interface 1011. It is worth mentioning that the two four-way valves are connected to the first evaporator 103 and the condenser 105 through coolant pipes, so the two four-way valves can be used to connect or disconnect the passages between the first heat exchange plate 202, the second heat exchange plate 302, the radiator 401, the condenser 105 and the first evaporator 103.

[0112] In addition, in the embodiment provided in FIG. 3 of the present application, the thermal management module 1 further includes two water pumps, namely, water pump 106a and water pump 106b, which can be disposed within the housing 101. Water pump 106a is connected between the first heat exchange plate 202 and the four-way valve 1021a to accelerate the flow of coolant through the first heat exchange plate 202, thereby improving the heat exchange efficiency of the first heat exchange plate 202. Water pump 106b is disposed at one end of the radiator 401 to accelerate the flow of coolant through the radiator 401, thereby improving the heat dissipation efficiency of the radiator 401. It will be appreciated that in actual applications, the locations of water pumps 106a and 106b can be flexibly arranged, as long as water pump 106a can accelerate the flow of coolant through the first heat exchange plate 202, and water pump 106b can accelerate the flow of coolant through the radiator 401. In some possible embodiments, when the water pump 106a and the water pump 106b are located in the same circulation path, one water pump may be selectively removed to save the number of water pumps used, which will not be elaborated here.

[0113] As shown in FIG3 , the thermal management module 1 further includes an electric heater 107 , which can be used to heat the coolant flowing through the first heat exchange plate 202 , thereby increasing the surface temperature of the battery 201 . In a specific configuration, the electric heater 107 can be connected in series with the passageway connected to the first heat exchange plate 202 , allowing for various placement locations. For example, as shown in FIG3 , the electric heater 107 can be connected in series with the four-way valve 1021a and the passageway connected to the first heat exchange plate 202 . In other possible embodiments, the electric heater 107 can also be placed in other locations, as long as the electric heater 107 can communicate with the first heat exchange plate 202 .

[0114] It is worth mentioning that in the embodiment of the present application, the electric heater 107 can be disposed inside the housing 101 to improve the integration of the thermal management module 1. Alternatively, the electric heater 107 can also be an independent module disposed outside the housing 101 to increase the flexibility of the location of the electric heater 107.

[0115] In practical applications, the energy storage device 100 provided in this application can connect or disconnect different coolant interfaces through the valve body assembly 102 so that the energy storage device 100 can operate in corresponding operating modes. Next, several operating modes of the energy storage device 100 provided in FIG3 are illustrated with reference to the accompanying drawings.

[0116] 4 , which illustrates the operating mode of the energy storage device 100 when the ambient temperature is high (such as in summer), shows three circulation loops, which are described below.

[0117] The first circulation loop includes the compressor 5, the condenser 105, the first throttle valve 104, and the first evaporator 103, which are sequentially connected through the refrigerant pipeline. The first circulation loop is a refrigerant circulation loop. During the refrigerant circulation in the circulation loop, the first evaporator 103 can be kept at a relatively low temperature.

[0118] In the second circulation loop, four-way valve 1021a and second four-way valve 1021a connect the passage between first heat exchange plate 202 and first evaporator 103, thereby sequentially connecting first heat exchange plate 202, water pump 106a, first evaporator 103, and electric heater 107 through the coolant channel. Since the temperature of first evaporator 103 is relatively low at this point, the coolant circulating in this circulation loop exchanges heat with the first evaporator 103, cooling first heat exchange plate 202 and thereby dissipating heat from battery 201.

[0119] In the third circulation loop, four-way valves 1021a and 1021b connect the passage between the second heat exchange plate 302 and the radiator 401, thereby connecting the second heat exchange plate 302, the water pump 106b, the radiator 401, and the condenser 105 sequentially through the coolant channel. As the coolant circulates through this circulation loop, the radiator 401 cools the coolant, thereby cooling the second heat exchange plate 302 and dissipating heat from the power circuit 301. Furthermore, since the condenser 105 is also connected in series within this circulation loop, the radiator 401 can also be used to cool the condenser 105.

[0120] It should be noted that, in the operating mode shown in FIG. 4 , the electric heater 107 is in an off state.

[0121] In addition, referring to FIG. 5 , FIG. 5 shows the operation mode of the energy storage device 100 when the ambient temperature is relatively suitable (such as in spring or autumn).

[0122] In this operating mode, four-way valves 1021a and 1021b connect the coolant passages between the first heat exchange plate 202, the second heat exchange plate 302, and the radiator 401. This connects the first heat exchange plate 202, the water pump 106a, the second heat exchange plate 302, the first evaporator 103, the water pump 106b, the radiator 401, and the electric heater 107 in sequence through the coolant passages, forming a circulation loop. As the coolant circulates through this circulation loop, the radiator 401 cools the first and second heat exchange plates 202, 302, thereby dissipating heat from the battery 201 and the power circuit 301.

[0123] It is worth mentioning that in the operating mode shown in FIG5 , the electric heater 107 is in the off state. Furthermore, since the heat dissipation requirements of the battery 201 and the power circuit 301 can be met solely by the radiator 401 when the ambient temperature is relatively suitable, the compressor 5, the first evaporator 103, and the condenser 105 are all in the off state in this operating mode.

[0124] 6 , which shows the operation mode of the energy storage device 100 when the ambient temperature is low (such as in winter).

[0125] During the operation of the energy storage device 100, the power circuit 301 always generates a large amount of heat. In winter, in low temperatures, to ensure the charge and discharge performance of the battery 201, the battery 201 needs to be heated. Based on this, it is possible to consider using the heat generated by the power circuit 301 to heat the battery 201. In specific implementation, as shown in Figure 6, the four-way valve 1021a and the four-way valve 1021b connect the passage between the first heat exchange plate 202 and the second heat exchange plate 302, so that the first heat exchange plate 202, the water pump 106a, the second heat exchange plate 302, the condenser 105, and the electric heater 107 are connected in sequence through the coolant channel to form a circulation loop. As the coolant circulates in this circulation loop, the heat generated by the power circuit 301 can be transferred to the first heat exchange plate 202 to heat the battery 201, thereby achieving efficient heat utilization. In this operating mode, the electric heater 107 can be turned on or off as needed, which will not be described in detail here.

[0126] In the operating mode shown in FIG6 , the compressor 5, the first evaporator 103, and the condenser 105 are all in the closed state. However, in actual application, as shown in FIG7 , the first throttle valve 104 and the compressor 5 can also be set to the open state as needed. That is, the working principle of the heat pump is used to make the condenser 105 reach a higher temperature, so that the condenser 105 can heat the coolant flowing in the circulation loop formed by the first heat exchange plate 202, the electric heater 107, the condenser 105, the second heat exchange plate 302, and the water pump 106a connected in sequence through the coolant channel, thereby allowing the condenser 105 to provide heat energy to the first heat exchange plate 202.

[0127] As shown in Figure 8, the energy storage device 100 operates in a low ambient temperature (e.g., winter temperatures) when neither the heat generated by the power circuit 301 nor the heat generated by the condenser 105 in heat pump mode can meet the battery heating requirements. In this mode, the electric heater 107 is turned on, and the first heat exchange plate 202, water pump 106a, first evaporator 103, and electric heater 107 are sequentially connected via a coolant pipe to form a circulation loop. The electric heater 107 heats the coolant circulating in this circulation loop, thereby heating the battery 201.

[0128] It is worth mentioning that, in the operating mode shown in FIG8 , the compressor 5 , the first evaporator 103 and the condenser 105 are all in a closed state.

[0129] When the energy storage device 100 operates under low ambient temperature conditions, in addition to heating the battery through the electric heater 107, other possible methods can also be used. For example, referring to Figure 9, Figure 9 is another specific structural schematic diagram of the energy storage device 100 provided in an embodiment of the present application. Compared with the energy storage device 100 shown in Figure 3, the energy storage device 100 in Figure 9 adds a bypass valve 108 to the compressor 5. The bypass valve 108 is arranged in parallel with the compressor 5, wherein the bypass valve 108 can be, for example, a solenoid valve. In this way, when the compressor 5 is in the heating state, the bypass valve 108 is also in the open state to reduce the pressure on the compressor 5, so that the heat generated by the compressor 5 itself can be used to heat the battery 201. When the compressor 5 is in the cooling state, the bypass valve 108 is in the closed state. It can be understood that when the heat generated by the compressor 5 itself can meet the heating requirements of the battery, the electric heater 107 in the energy storage device 100 can be removed, which is beneficial to improving the energy efficiency of the energy storage device 100.

[0130] Other possible operating modes of the energy storage device 100 provided in FIG. 9 can be referred to those shown in FIG. 4 to FIG. 8 above, and are not described in detail here.

[0131] Because water vapor is generated during the heat exchange process between the modules of the energy storage device 100, it is difficult for the energy storage device 100 based on liquid cooling to discharge this water vapor. Water vapor that exists in the energy storage device 100 for a long time will corrode the battery 201 and related electronic components, and may even cause adverse conditions such as short circuits, affecting the safety and service life of the energy storage device 100. In order to improve the operational safety of the energy storage device 100, a dehumidification module 109 can be provided in the energy storage device 100. For specific implementation, please refer to Figure 10, which is another specific structural schematic diagram of the energy storage device 100 provided in an embodiment of the present application. As shown in Figure 10, the thermal management module 1 also includes a dehumidification module 109, which can be located inside the housing 101. In some other possible embodiments, the dehumidification module 109 can also be located outside the housing 101. In addition, the dehumidification module 109 includes a second evaporator 1091 and a second throttle valve 1092 connected by a refrigerant pipeline.

[0132] Continuing with Figure 10 , in the energy storage device 100, the compressor 5, dehumidification module 109, and condenser 105 are sequentially connected via refrigerant pipes to form a dehumidification cycle. As the refrigerant circulates through the loop formed by the compressor 5, second evaporator 1091, second throttle valve 1092, and condenser 105, the temperature of the second evaporator 1091 is relatively low. When the ambient humidity is high and the temperature of the second evaporator 1091 is lower than the dew point of the air, water vapor in the air condenses into water droplets, which are then discharged through the drainage pipe, thereby reducing the humidity in the energy storage device 100.

[0133] Since the temperature of the second evaporator 1091 is relatively low, it can also reduce the temperature of the air within the energy storage device 100, which helps keep the battery 201 in a relatively low temperature environment. In addition, the dehumidification module 109 can also include a fan (not shown in Figure 10), which can be located near the second evaporator 1091 to accelerate the circulation of air through the second evaporator 1091, thereby reducing the temperature of the second evaporator 1091, which helps improve the dehumidification effect of the dehumidification module 109.

[0134] In the energy storage device 100 shown in FIG10 , the circulation loop formed by the first heat exchange plate 202 and the radiator 401 can effectively reduce the surface temperature of the battery 201. Furthermore, the lower temperature of the second evaporator 1091 in the dehumidification module 109 can effectively reduce the temperature of the air within the energy storage device 100, thereby effectively improving the heat dissipation effect on the battery 201. Furthermore, the second evaporator 1091 in the dehumidification module 109 can condense moisture within the energy storage device 100, thereby reducing the humidity of the air within the energy storage device 100. This allows the battery 201 to operate in a relatively dry environment, which helps ensure the reliability and service life of the battery 201.

[0135] It is understood that in the embodiment provided in FIG10 , the combination of the second evaporator 1091 and the second throttle valve 1092 is arranged in parallel with the combination of the first evaporator 103 and the first throttle valve 104 so that the two do not affect each other. Specifically, when performing dehumidification, the second throttle valve 1092 can be opened and the first throttle valve 104 can be closed, so that the refrigerant can circulate in the circulation loop composed of the compressor 5, the condenser 105, the second throttle valve 1092, and the second evaporator 1091, thereby making the second evaporator 1091 have a lower temperature to achieve the dehumidification function. In addition, the first throttle valve 104 and the second throttle valve 1092 can be opened at the same time, that is, the refrigerant can circulate in the circulation loop composed of the compressor 5, the condenser 105, the first throttle valve 104, and the first evaporator 103, and can also circulate in the circulation loop composed of the compressor 5, the condenser 105, the second throttle valve 1092, and the second evaporator 1091. As a result, both the first evaporator 103 and the second evaporator 1091 have relatively low temperatures. That is, the first evaporator 103 can cool the battery 201, and the second evaporator 1091 can dehumidify. Of course, in a specific implementation, the first throttle valve 104 can be opened and the second throttle valve 1092 can be closed, allowing the refrigerant to circulate in the loop formed by the compressor 5, the condenser 105, the first throttle valve 104, and the first evaporator 103. This allows the first evaporator 103 to have a relatively low temperature, thereby achieving the cooling function for the battery 201.

[0136] In summary, in the energy storage device 100 provided in FIG. 10 of the present application, the first evaporator 103 and the second evaporator 1091 in the thermal management module 1 are decoupled from each other, which can avoid mutual influence between the two. In addition, the combination of the first evaporator 103 and the first throttle valve 104 and the combination of the second evaporator 1091 and the second throttle valve 1092 share the same condenser 105 and compressor 5, thereby effectively reducing the number of components used, which is conducive to reducing the volume and cost of the thermal management module 1 and facilitating the realization of an integrated design. Of course, in other possible embodiments, the first evaporator 103 and the second evaporator 1091 can also be arranged in series, so that the first evaporator 103 and the second evaporator 1091 can share a throttle valve. For example, only the first throttle valve 104 or the second throttle valve 1092 can be set, thereby reducing the number of components used, which is conducive to reducing production costs.

[0137] Other possible operating modes of the energy storage device 100 provided in FIG. 10 may refer to those shown in FIG. 4 to FIG. 9 above, and are not described in detail here.

[0138] It is worth mentioning that in the embodiment of the present application, the provision of the dehumidification module 109 is independent of the bypass of the compressor 5, that is, the dehumidification module 109 and the bypass valve 108 at the compressor 5 can be provided at different times. For example, referring to FIG11 , in the energy storage device 100 shown in FIG11 , the bypass valve 108 is not provided at the compressor 5, and the thermal management module 1 is provided with the dehumidification module 109, which still enables the energy storage device 100 to operate in multiple modes for efficiently regulating the temperature of the battery 201. The operating modes of the energy storage device 100 shown in FIG11 can be described with reference to FIG4 to FIG10 , and will not be described in detail here.

[0139] In the above-mentioned embodiment of the present application, the first heat exchange plate 202 of the battery module 2 and the second heat exchange plate 302 of the power module 3 can be connected to the thermal management module 1 through two coolant interfaces 1011 respectively. In some other possible embodiments of the present application, the first heat exchange plate 202 of the battery module 2 and the second heat exchange plate 302 of the power module 3 can also be connected in series between the two coolant interfaces 1011. As shown in Figure 12, Figure 12 is another structural schematic diagram of the energy storage device provided by the embodiment of the present application. Among them, the combination formed by the first heat exchange plate 202 and the second heat exchange plate 302 connected in series is connected to the two coolant interfaces 1011. This can facilitate the cooling of the coolant flowing through the second heat exchange plate 302, thereby facilitating the cooling of the power circuit 301, thereby improving the operational reliability of the power circuit 301. In addition, it is also convenient to synchronously control the temperature of the power circuit 301 and the battery 201, which is conducive to simplifying the circulation loop of the coolant of the energy storage device 100. Other structures of the energy storage device 100 shown in FIG12 may be configured with reference to FIG3 above, and will not be described in detail here.

[0140] In addition, based on the energy storage device 100 shown in FIG12 , a bypass valve 108 or a dehumidification module 109 can also be provided for the compressor 5 according to actual application requirements. For example, as shown in FIG13 , compared to the energy storage device shown in FIG12 , the energy storage device 100 shown in FIG13 further includes a bypass valve 108 , which is provided in parallel with the compressor 5 .

[0141] As shown in FIG14 , compared with the energy storage device shown in FIG12 , the thermal management module 1 of the energy storage device 100 shown in FIG14 further includes a dehumidification module 109 . The dehumidification module 109 can be configured with reference to any of the above embodiments and will not be described in detail herein.

[0142] As shown in Figure 15, compared with the energy storage device shown in Figure 14, the energy storage device 100 shown in Figure 15 also includes a bypass valve 108, and the thermal management module 1 also includes a dehumidification module 109, wherein the bypass valve 108 and the dehumidification module 109 can be set with reference to any of the above embodiments and will not be described in detail here.

[0143] In the energy storage device 100 provided in the embodiment of the present application, the function of the valve body assembly 102 in the thermal management module 1 can be realized not only by the two four-way valves mentioned above, but also by other possible methods. For example, reference can be made to Figure 16, which is another specific structural diagram of the energy storage device 100 provided in the embodiment of the present application. In the energy storage device 100, the valve body assembly 102 of the thermal management module 1 includes an eight-way valve 1022, and the eight-way valve 1022 includes eight valve ports. Each valve port can be used to connect or disconnect with the first evaporator 103, the condenser 105 or at least one coolant interface 1011.

[0144] In practical applications, the communication status between different modules can be effectively adjusted through the valve body assembly 102 according to actual needs, so that the energy storage device 100 shown in FIG. 16 can operate in the corresponding operating mode.

[0145] For example, when the ambient temperature is high (such as in high temperature and high humidity in summer), refer to Figure 17, which is a schematic diagram of the circulation loop of the energy storage device 100 shown in Figure 16 in this operating mode. Figure 17 shows three circulation loops in this operating mode:

[0146] The first circulation loop includes the compressor 5, the condenser 105, the first throttle valve 104, and the first evaporator 103, which are sequentially connected through the refrigerant pipeline. The first circulation loop is a refrigerant circulation loop. During the refrigerant circulation in the circulation loop, the first evaporator 103 can be kept at a relatively low temperature.

[0147] In the second circulation path, eight-way valve 1022 connects the first heat exchange plate 202 and the first evaporator 103, thereby connecting the first heat exchange plate 202, water pump 106a, first evaporator 103, and electric heater 107 sequentially through the coolant channel. Since the temperature of the first evaporator 103 is relatively low at this point, the coolant circulating in this loop exchanges heat with the first evaporator 103, cooling the first heat exchange plate 202 and thus dissipating heat from the battery.

[0148] In the third circulation path, eight-way valve 1022 connects the passages between the second heat exchange plate 302, condenser 105, and radiator 401, thereby connecting the second heat exchange plate 302, condenser 105, radiator 401, and water pump 106b sequentially through the coolant channel. As the coolant circulates through this circulation loop, radiator 401 cools the second heat exchange plate 302, thereby cooling the second heat exchange plate 302 and dissipating heat from the battery. Furthermore, since condenser 105 is also connected in series within this circulation loop, radiator 401 can also be used to cool the condenser 105.

[0149] It should be noted that, in the operating mode shown in FIG. 17 , the electric heater 107 is in an off state.

[0150] In addition, the first heat exchange plate 202 can also be cooled by the radiator 401. For example, valve port 7 of the eight-way valve 1022 can be connected to valve port 4, and valve port 1 can be connected to valve port 2, so that the passage between the first heat exchange plate 202 and the radiator 401 is connected through the eight-way valve 1022. In this case, the coolant can flow through the circulation loop in which the first heat exchange plate 202, the water pump 106a, the water pump 106b, and the radiator 401 are connected in sequence.

[0151] In addition, referring to FIG. 18 , FIG. 18 shows the operation mode of the energy storage device 100 when the ambient temperature is relatively suitable (such as in spring or autumn).

[0152] Specifically, Figure 18 illustrates a circulation loop. The eight-way valve 1022 connects the passages between the first heat exchange plate 202, the second heat exchange plate 302, the condenser 105, and the radiator 401. This connects the first heat exchange plate 202, the water pump 106a, the condenser 105, the second heat exchange plate 302, the water pump 106b, the radiator 401, and the electric heater 107 sequentially through the coolant channel to form a circulation loop. As the coolant circulates through this circulation loop, the radiator 401 cools the first and second heat exchange plates 202, 302, thereby dissipating heat from the battery 201 and the power circuit 301.

[0153] It is worth mentioning that in the operating mode shown in FIG18 , the electric heater 107 is in the off state. Furthermore, since the heat dissipation requirements of the battery 201 and the power circuit 301 can be met solely by the radiator 401 when the ambient temperature is relatively suitable, the compressor 5, the first evaporator 103, and the condenser 105 are all in the off state in this operating mode.

[0154] Referring to FIG. 19 , FIG. 19 shows the operating mode of the energy storage device when the ambient temperature is low (such as low temperatures in winter).

[0155] In Figure 19, eight-way valve 1022 connects the passage between first heat exchange plate 202 and second heat exchange plate 302, thereby connecting the first heat exchange plate 202, water pump 106a, second heat exchange plate 302, and electric heater 107 sequentially through the coolant channel to form a circulation loop. As the coolant circulates through this circulation loop, heat generated by power circuit 301 is transferred to first heat exchange plate 202, heating battery 201 and achieving efficient heat utilization. In this operating mode, electric heater 107 can be turned on or off as needed, which will not be detailed here.

[0156] It should be noted that in actual applications, the first throttle valve 104 and the compressor 5 can both be set to the open state as needed, as shown in Figure 20. That is, the working principle of the heat pump is used to ensure that the condenser 105 has a higher temperature, thereby allowing the condenser 105 to provide heat energy to the first heat exchange plate 202. In addition, the electric heater 107 can also be turned on as needed to increase the temperature of the first heat exchange plate 202. It is understandable that when the energy storage device 100 is deployed in a region with lower temperatures, the electric heater 107 can be installed as needed. When the energy storage device 100 is deployed in a region with higher temperatures, the electric heater 107 can be omitted, thereby reducing deployment costs.

[0157] As shown in Figure 21, Figure 21 shows the operating mode of the energy storage device 100 when the ambient temperature is low (such as in winter), and the heat generated by the power circuit 301 and the heat generated by the condenser 105 in the heat pump mode cannot meet the heating needs of the battery 201. In this mode, the electric heater 107 is turned on, and the first heat exchange plate 202, the water pump 106a, the condenser 105, the second heat exchange plate 302 and the electric heater 107 are connected in sequence through the coolant pipe to form a circulation loop, so that the coolant circulating in the circulation loop is heated by the electric heater 107 to achieve heating of the battery 201. In addition, since the second heat exchange plate 302 is also connected in series in the above-mentioned path, the heat generated by the second heat exchange plate 302 can also be transferred to the first heat exchange plate 202, thereby achieving heating of the battery 201.

[0158] It is worth noting that in the operating mode shown in Figure 21, the compressor 5, the first evaporator 103, and the condenser 105 are all in the off state. Furthermore, in this mode, to enable heating of the battery 201 by the electric heater 107, valve ports 1 and 6 of the eight-way valve 1022 can be connected, and valve ports 4 and 5 can be connected. This allows the first heat exchange plate 202, the water pump 106a, the condenser 105, the second heat exchange plate 302, and the electric heater 107 to be sequentially connected via the coolant pipe to form a circulation loop. This allows the first heat exchange plate 202 to be heated by both the second heat exchange plate 302 and the electric heater 107.

[0159] When the energy storage device 100 is operating under low ambient temperature conditions, in addition to heating the battery through the electric heater 107, other possible methods can also be used. For example, referring to Figure 22, Figure 22 is another specific structural schematic diagram of the energy storage device 100 provided in an embodiment of the present application. Compared with the energy storage device 100 shown in Figure 16, the energy storage device 100 in Figure 22 adds a bypass valve 108 to the compressor 5. The bypass valve 108 is arranged in parallel with the compressor 5, wherein the bypass valve 108 can be, for example, a solenoid valve. In this way, when the compressor 5 is operating in the heating state, the bypass valve 108 is opened to reduce the pressure of the compressor 5, so that the heat generated by the compressor 5 itself can be used to heat the battery 201. When the compressor is operating in the cooling state, the bypass valve 108 is closed. It can be understood that when the heat generated by the compressor 5 itself can meet the heating requirements of the battery, the electric heater 107 in the energy storage device 100 can be removed, which is conducive to improving the energy efficiency of the energy storage device 100.

[0160] Other possible operating modes of the energy storage device 100 provided in FIG. 22 can be referred to those shown in FIG. 17 to FIG. 21 above, and will not be described in detail here.

[0161] In addition, a dehumidification module 109 can also be added to the energy storage device 100 shown in Figure 22. Specifically, refer to Figure 23, which is another specific structural schematic diagram of the energy storage device 100 provided in an embodiment of the present application. As shown in Figure 23, the thermal management module 1 also includes a dehumidification module 109. The dehumidification module 109 can be configured with reference to the dehumidification module 109 in any of the above embodiments, and will not be described in detail here. In the energy storage device 100 shown in Figure 23, the compressor 5, the dehumidification module 109, and the condenser 105 are connected in sequence through the refrigerant pipe to form a dehumidification cycle. Since the temperature of the second evaporator 1091 will be relatively low during the circulation of the refrigerant in the circulation loop formed by the compressor 5, the dehumidification module 109, and the condenser 105, when the ambient humidity is high and the temperature of the second evaporator 1091 is lower than the dew point temperature of the air, the water vapor in the air condenses into water droplets, which are then discharged through the drainage pipe to reduce the humidity in the energy storage device 100.

[0162] Because the second evaporator 1091 has a lower temperature, it can also lower the temperature of the air within the energy storage device 100, helping to maintain a lower temperature environment for the batteries. Furthermore, the dehumidification module 109 can also include a fan, which can be positioned near the second evaporator 1091 to accelerate the flow of air through the second evaporator 1091, thereby lowering the temperature of the second evaporator 1091 and improving the dehumidification effect of the dehumidification module 109.

[0163] In the energy storage device 100 shown in FIG23 , the circulation loop formed by the first heat exchange plate 202 and the radiator 401 can effectively reduce the surface temperature of the battery 201. Furthermore, the lower temperature of the second evaporator 1091 in the dehumidification module 109 can effectively reduce the temperature of the air within the energy storage device 100, thereby effectively improving the heat dissipation effect on the battery. Furthermore, the second evaporator 1091 in the dehumidification module 109 can condense moisture within the energy storage device 100, thereby reducing the humidity of the air within the energy storage device 100. This allows the battery to operate in a relatively dry environment, which helps ensure battery reliability and service life.

[0164] It is understood that in the embodiment provided in FIG23 , the combination of the second evaporator 1091 and the second throttle valve 1092 is arranged in parallel with the combination of the first evaporator 103 and the first throttle valve 104, so that the two do not affect each other. Specifically, when performing dehumidification, the second throttle valve 1092 can be opened and the first throttle valve 104 can be closed, so that the refrigerant can circulate in the circulation loop composed of the compressor 5, the condenser 105, the second throttle valve 1092, and the second evaporator 1091, thereby making the second evaporator 1091 have a lower temperature to achieve the dehumidification function. In addition, the first throttle valve 104 and the second throttle valve 1092 can be opened at the same time, that is, the refrigerant can circulate in the circulation loop composed of the compressor 5, the condenser 105, the first throttle valve 104, and the first evaporator 103, and can also circulate in the circulation loop composed of the compressor 5, the condenser 105, the second throttle valve 1092, and the second evaporator 1091. As a result, both the first evaporator 103 and the second evaporator 1091 have relatively low temperatures. That is, the first evaporator 103 can cool the battery 201, and the second evaporator 1091 can dehumidify. Of course, in a specific implementation, the first throttle valve 104 can be opened and the second throttle valve 1092 can be closed, allowing the refrigerant to circulate in the loop formed by the compressor 5, the condenser 105, the first throttle valve 104, and the first evaporator 103. This allows the first evaporator 103 to have a relatively low temperature, thereby achieving the cooling function for the battery 201.

[0165] In summary, in the energy storage device 100 provided in FIG. 23 of the present application, the first evaporator 103 and the second evaporator 1091 in the thermal management module 1 are decoupled from each other, which can avoid mutual influence between the two. In addition, the combination of the first evaporator 103 and the first throttle valve 104 and the combination of the second evaporator 1091 and the second throttle valve 1092 share the same condenser 105 and compressor 5, which can effectively reduce the number of components used, help reduce the volume and cost of the adjustment device, and facilitate the realization of an integrated design. Of course, in other possible embodiments, the first evaporator 103 and the second evaporator 1091 can also be arranged in series, so that the first evaporator 103 and the second evaporator 1091 can share a throttle valve. For example, only the first throttle valve 104 or the second throttle valve 1092 can be set, so that the number of components used can be reduced, which is conducive to reducing production costs.

[0166] Other possible operating modes of the energy storage device 100 provided in FIG. 23 can be referred to those shown in FIG. 17 to FIG. 22 above, and will not be described in detail here.

[0167] It is worth mentioning that in the embodiment of the present application, the provision of the dehumidification module 109 is independent of the bypass of the compressor 5, that is, the dehumidification module 109 and the bypass valve 108 at the compressor 5 may not be provided at the same time. For example, referring to FIG24 , in the energy storage device 100 shown in FIG24 , the bypass valve 108 is not provided at the compressor 5, and the thermal management system is provided with a dehumidification module 109, which still enables the energy storage device 100 to operate in multiple modes for efficiently regulating the temperature of the battery 201. Among them, the various operating modes of the energy storage device 100 shown in FIG24 can be referred to as shown in FIG17 to FIG23 , and will not be described in detail here.

[0168] In the above embodiment of the present application, the first heat exchange plate 202 of the battery module 2 and the second heat exchange plate 302 of the power module 3 can be connected to the thermal management module 1 through two coolant interfaces respectively. In some other possible embodiments of the present application, the first heat exchange plate 202 of the battery module 2 and the second heat exchange plate 302 of the power module 3 can also be connected in series, as shown in Figure 25, which is another structural schematic diagram of the energy storage device provided by the embodiment of the present application. Among them, the combination formed by the first heat exchange plate 202 and the second heat exchange plate 302 connected in series is connected to the two coolant interfaces 1011, which can facilitate the cooling of the coolant flowing through the second heat exchange plate 302, thereby facilitating the cooling of the power circuit 301, thereby improving the operational reliability of the power circuit 301. In addition, it is also convenient to synchronously control the temperature of the power circuit 301 and the battery 201, which is conducive to simplifying the circulation loop of the coolant of the energy storage device 100. The other structures of the energy storage device 100 shown in Figure 25 can be set with reference to Figure 16 above, and will not be described in detail here.

[0169] In addition, based on the energy storage device 100 shown in FIG25 , a bypass valve 108 or a dehumidification module 109 can also be provided for the compressor 5 according to actual application requirements. For example, as shown in FIG26 , compared with the energy storage device 100 shown in FIG25 , the energy storage device 100 shown in FIG26 further includes a bypass valve 108, which is provided in parallel with the compressor 5.

[0170] As shown in FIG27 , compared with the energy storage device shown in FIG25 , the thermal management module 1 of the energy storage device 100 shown in FIG27 further includes a dehumidification module 109 . The dehumidification module 109 can be configured with reference to any of the above embodiments and will not be described in detail herein.

[0171] As shown in Figure 28, compared with the energy storage device shown in Figure 27, the energy storage device 100 shown in Figure 28 also includes a bypass valve 108, and the thermal management module 1 also includes a dehumidification module 109, wherein the bypass valve 108 and the dehumidification module 109 can be set with reference to any of the above embodiments and will not be described in detail here.

[0172] In the above embodiment, the valve body assembly 102 is configured as two four-way valves connected in series or as an eight-way valve, so that the valve body assembly 102 includes eight valve ports for connecting to the first evaporator 103, the condenser 105 or the coolant interface 1011. In actual applications, the number of interfaces of the valve body assembly 102 can also be adjusted according to specific needs. For example, referring to Figure 29, Figure 29 is another specific structural diagram of the energy storage device 100 provided in an embodiment of the present application. Among them, the valve body assembly 102 of the thermal management module 1 includes two five-way valves, and each five-way valve includes five valve ports. For ease of distinction in the embodiment of the present application, the two five-way valves may be referred to as five-way valve 1023a and five-way valve 1023b, respectively. The first evaporator 103 is connected between the five-way valve 1023a and the five-way valve 1023b, the condenser 105 is connected between the five-way valve 1023b and a coolant port 1011, and the other valve ports of the two five-way valves are each connected to a coolant port 1011. The five-way valve 1023a and the five-way valve 1023b can then be used to connect or disconnect the passages between the first heat exchange plate 202, the second heat exchange plate 302, the radiator 401, the condenser 105, and the first evaporator 103.

[0173] In actual applications, the energy storage device 100 provided in FIG29 can connect or disconnect different coolant interfaces through two five-way valves to enable the energy storage device 100 to operate in corresponding operating modes. Next, several operating modes of the energy storage device 100 provided in FIG29 are illustrated with reference to the accompanying drawings.

[0174] First, refer to FIG30 , which shows the operation mode of the energy storage device 100 when the ambient temperature is high (such as in the high temperature of summer). In FIG30 , four circulation loops are shown:

[0175] The first circulation loop includes the compressor 5, the condenser 105, the first throttle valve 104, and the first evaporator 103, which are sequentially connected through the refrigerant pipeline. The first circulation loop is a refrigerant circulation loop. During the refrigerant circulation in the circulation loop, the first evaporator 103 can be kept at a relatively low temperature.

[0176] In the second circulation loop, five-way valves 1023a and 1023b connect the passage between the first heat exchange plate 202 and the first evaporator 103, thereby connecting the first heat exchange plate 202, the water pump 106a, the first evaporator 103, and the electric heater 107 sequentially through the coolant channel. Since the temperature of the first evaporator 103 is relatively low at this point, the coolant circulating in this circulation loop exchanges heat with the first evaporator 103, cooling the first heat exchange plate 202 and thus dissipating heat from the battery 201.

[0177] In the third circulation loop, five-way valves 1023a and 1023b connect the passage between the second heat exchange plate 302 and the radiator 401, thereby sequentially connecting the second heat exchange plate 302, the water pump 106b, the radiator 401, and the condenser 105 through the coolant channel. As the coolant circulates through this circulation loop, the radiator 401 cools the second heat exchange plate 302, thereby cooling the second heat exchange plate 302 and dissipating heat from the power circuit 301.

[0178] In the fourth circulation loop, the five-way valve 1023a and the five-way valve 1023b connect the passage between the condenser 105 and the radiator 401, so that the condenser 105, the water pump 106b and the radiator 401 are connected in sequence through the coolant channel. When the coolant circulates in the circulation loop, the radiator 401 can cool the condenser 105.

[0179] It should be noted that, in the operating mode shown in FIG. 30 , the electric heater 107 is in an off state.

[0180] In addition, referring to FIG. 31 , FIG. 31 shows the operating mode of the energy storage device 100 when the ambient temperature is relatively suitable (such as in spring or autumn).

[0181] In this operating mode, five-way valves 1023a and 1023b connect the coolant passages between the first heat exchange plate 202, the second heat exchange plate 302, and the radiator 401. This connects the first heat exchange plate 202, the water pump 106a, the second heat exchange plate 302, the first evaporator 103, the water pump 106b, the radiator 401, and the electric heater 107 in sequence through the coolant passages, forming a circulation loop. As the coolant circulates through this circulation loop, the radiator 401 cools the first and second heat exchange plates 202, 302, thereby dissipating heat from the battery 201 and the power circuit 301.

[0182] It is worth mentioning that in the operating mode shown in FIG31 , the electric heater 107 is in the off state. Furthermore, since the heat dissipation requirements of the battery and power circuit 301 can be met solely by the radiator 401 when the ambient temperature is relatively suitable, the compressor 5, the first evaporator 103, and the condenser 105 are all in the off state in this operating mode.

[0183] 32 , which shows the operating mode of the energy storage device 100 when the ambient temperature is low (such as in winter).

[0184] During the operation of the energy storage device 100, the power circuit 301 always generates a large amount of heat. In winter, under low temperature conditions, in order to ensure the charging and discharging performance of the battery, the battery needs to be heated. Based on this, it can be considered to use the heat generated by the power circuit 301 to heat the battery. In specific implementation, as shown in Figure 32, the five-way valve 1023a and the five-way valve 1023b connect the coolant passage between the first heat exchange plate 202 and the second heat exchange plate 302, so that the first heat exchange plate 202, the water pump 106a, the second heat exchange plate 302 and the electric heater 107 are connected in sequence through the coolant channel to form a circulation loop. Then, during the circulation of the coolant in this circulation loop, the heat generated by the power circuit 301 can be transferred to the first heat exchange plate 202 to achieve heating of the battery 201, thereby achieving efficient use of heat. Among them, in this operating mode, the electric heater 107 can be turned on or off as needed, which will not be described in detail here.

[0185] In the operating mode shown in FIG32 , the compressor 5, the first evaporator 103, and the condenser 105 are all in the closed state. However, in actual applications, as shown in FIG33a and FIG33b , the first throttle valve 104 and the compressor 5 can also be set to the open state as needed. That is, the working principle of the heat pump is used to maintain a higher temperature of the condenser 105, so that the condenser 105 can heat the coolant flowing in the circulation loop formed by the first heat exchange plate 202, the water pump 106a, the condenser 105, and the electric heater 107 connected in sequence through the coolant channel, thereby allowing the condenser 105 to provide heat energy to the first heat exchange plate 202.

[0186] As shown in Figure 34, the energy storage device 100 operates in a low ambient temperature (e.g., winter temperatures) when neither the heat generated by the power circuit 301 nor the heat generated by the condenser 105 in heat pump mode can meet the battery heating requirements. In this mode, the electric heater 107 is turned on, and the first heat exchange plate 202, water pump 106a, first evaporator 103, and electric heater 107 are sequentially connected via a coolant pipe to form a circulation loop. The electric heater 107 heats the coolant circulating in this circulation loop, thereby heating the battery 201.

[0187] It is worth mentioning that, in the operating mode shown in FIG34 , the compressor 5 , the first evaporator 103 and the condenser 105 are all in the closed state.

[0188] When the energy storage device 100 is operating under low ambient temperature conditions, in addition to heating the battery through the electric heater 107, other possible methods can also be used. For example, referring to Figure 35, Figure 35 is another specific structural schematic diagram of the energy storage device 100 provided in an embodiment of the present application. Compared with the energy storage device 100 shown in Figure 29, the energy storage device 100 in Figure 35 adds a bypass valve 108 to the compressor 5. The bypass valve 108 is arranged in parallel with the compressor 5, wherein the bypass valve 108 can be, for example, a solenoid valve. In this way, when the compressor 5 is operating in the heating state, the bypass valve 108 is opened to reduce the pressure of the compressor 5, so that the heat generated by the compressor 5 itself can be used to heat the battery 201. When the compressor is operating in the cooling state, the bypass valve 108 is closed. It can be understood that when the heat generated by the compressor 5 itself can meet the heating requirements of the battery 201, the electric heater 107 in the energy storage device 100 can be removed, which is conducive to improving the energy efficiency of the energy storage device 100.

[0189] Other possible operating modes of the energy storage device 100 provided in FIG35 can be referred to those shown in FIG30 to FIG32 , FIG33 a and FIG33 b , and FIG34 , which will not be described in detail here.

[0190] Referring to Figure 36, Figure 36 is another specific structural schematic diagram of the energy storage device 100 provided in an embodiment of the present application. Compared with the energy storage device 100 shown in Figure 35, in the energy storage device 100 shown in Figure 36, the thermal management module 1 is further provided with a dehumidification module 109. The dehumidification module 109 can be configured with reference to the dehumidification module 109 in any of the above embodiments, and will not be described in detail here. In the energy storage device 100 shown in Figure 36, the compressor 5, the dehumidification module 109, and the condenser 105 are connected in sequence through the refrigerant pipe to form a dehumidification cycle. Since the temperature of the second evaporator 1091 will be relatively low during the circulation of the refrigerant in the circulation loop formed by the compressor 5, the dehumidification module 109, and the condenser 105, when the ambient humidity is high and the temperature of the second evaporator 1091 is lower than the dew point temperature of the air, the water vapor in the air condenses into water droplets, which are then discharged through the drainage pipe to reduce the humidity in the energy storage device 100.

[0191] Because the second evaporator 1091 has a lower temperature, it can also lower the temperature of the air within the energy storage device 100, helping to maintain a lower temperature environment for the batteries. Furthermore, the dehumidification module 109 can also include a fan, which can be positioned near the second evaporator 1091 to accelerate the flow of air through the second evaporator 1091, thereby lowering the temperature of the second evaporator 1091 and improving the dehumidification effect of the dehumidification module 109.

[0192] In the energy storage device 100 shown in FIG36 , the circulation loop formed by the first heat exchange plate 202 and the radiator 401 can effectively reduce the temperature of the battery surface. Furthermore, the lower temperature of the second evaporator 1091 in the dehumidification module 109 can effectively reduce the temperature of the air within the energy storage device 100, thereby effectively improving the heat dissipation effect on the battery 201. Furthermore, the second evaporator 1091 in the dehumidification module 109 can condense moisture within the energy storage device 100, thereby reducing the humidity of the air within the energy storage device 100. This allows the battery 201 to operate in a relatively dry environment, which helps ensure the reliability and service life of the battery 201.

[0193] It is understood that in the embodiment provided in FIG36 , the combination of the second evaporator 1091 and the second throttle valve 1092 is arranged in parallel with the combination of the first evaporator 103 and the first throttle valve 104, so that the two do not affect each other. Specifically, when performing dehumidification, the second throttle valve 1092 can be opened and the first throttle valve 104 can be closed, so that the refrigerant can circulate in the circulation loop composed of the compressor 5, condenser 105, second throttle valve 1092, and second evaporator 1091, thereby maintaining a lower temperature in the second evaporator 1091 to achieve the dehumidification function. In addition, the first throttle valve 104 and the second throttle valve 1092 can be opened simultaneously, that is, the refrigerant can circulate in the circulation loop composed of the compressor 5, condenser 105, first throttle valve 104, and first evaporator 103, and can also circulate in the circulation loop composed of the compressor 5, condenser 105, second throttle valve 1092, and second evaporator 1091. As a result, both the first evaporator 103 and the second evaporator 1091 have relatively low temperatures. That is, the first evaporator 103 can cool the battery 201, and the second evaporator 1091 can dehumidify. Of course, in a specific implementation, the first throttle valve 104 can be opened and the second throttle valve 1092 can be closed, allowing the refrigerant to circulate in the loop formed by the compressor 5, the condenser 105, the first throttle valve 104, and the first evaporator 103. This allows the first evaporator 103 to have a relatively low temperature, thereby achieving the cooling function for the battery 201.

[0194] In summary, in the energy storage device 100 provided in FIG. 36 of the present application, the first evaporator 103 and the second evaporator 1091 in the thermal management module 1 are decoupled from each other, which can avoid mutual influence between the two. In addition, the combination of the first evaporator 103 and the first throttle valve 104 and the combination of the second evaporator 1091 and the second throttle valve 1092 share the same condenser 105 and compressor 5, thereby effectively reducing the number of components used, which is conducive to reducing the volume and cost of the adjustment device and facilitating the realization of an integrated design. Of course, in other possible embodiments, the first evaporator 103 and the second evaporator 1091 can also be arranged in series, so that the first evaporator 103 and the second evaporator 1091 can share a throttle valve. For example, only the first throttle valve 104 or the second throttle valve 1092 can be set, thereby reducing the number of components used, which is conducive to reducing production costs.

[0195] Other possible operating modes of the energy storage device 100 provided in FIG36 can be referred to those shown in FIG30 to FIG32, FIG33a and FIG33b, and FIG34 to FIG35, and will not be described in detail here.

[0196] It is worth mentioning that in the embodiment of the present application, the setting of the dehumidification module 109 is independent of the bypass of the compressor 5, that is, the dehumidification module 109 and the bypass valve 108 at the compressor 5 may not be set at the same time. For example, referring to Figure 37, in the energy storage device 100 shown in Figure 37, the bypass valve 108 is not provided at the compressor 5, and the thermal management system is provided with a dehumidification module 109, which still enables the energy storage device 100 to operate in multiple modes for efficient regulation of the battery temperature. Among them, the operating mode of the energy storage device 100 shown in Figure 37 can be referred to Figures 30 to 32, Figures 33a and 33b, and Figures 34 to 36, and will not be described in detail here.

[0197] Referring to Figure 38 , Figure 38 is another specific structural schematic diagram of the energy storage device 100 provided in an embodiment of the present application. In this energy storage device 100, the valve body assembly 102 is a ten-way valve 1024, which can also provide ten valve ports for connecting or disconnecting multiple coolant interfaces. In actual applications, the connection status of different coolant interfaces can be effectively adjusted through the valve body assembly 102 according to actual needs, so that the energy storage device 100 shown in Figure 34 can operate in the corresponding operating mode.

[0198] For example, when the ambient temperature is high (such as in high temperature and high humidity in summer), refer to Figure 39, which is a schematic diagram of the circulation loop of the energy storage device 100 shown in Figure 38 in this operating mode. Figure 39 shows four circulation loops in this operating mode:

[0199] The first circulation loop includes the compressor 5, the condenser 105, the first throttle valve 104, and the first evaporator 103, which are sequentially connected through the refrigerant pipeline. The first circulation loop is a refrigerant circulation loop. During the refrigerant circulation in the circulation loop, the first evaporator 103 can be kept at a relatively low temperature.

[0200] In the second circulation loop, ten-way valve 1024 connects the coolant passage between first heat exchange plate 202 and first evaporator 103, thereby connecting first heat exchange plate 202, first evaporator 103, water pump 106a, and electric heater 107 sequentially through the coolant passage. Since the temperature of first evaporator 103 is relatively low at this point, the coolant circulating in this circulation loop exchanges heat with first evaporator 103, cooling first heat exchange plate 202 and thereby dissipating heat from the battery.

[0201] In the third circulation loop, the ten-way valve 1024 connects the coolant passage between the second heat exchange plate 302 and the radiator 401, thereby sequentially connecting the second heat exchange plate 302, the water pump 106b, the radiator 401, and the condenser 105 through the coolant passage. As the coolant circulates through this circulation loop, the radiator 401 cools the second heat exchange plate 302, thereby cooling the second heat exchange plate 302 and dissipating heat from the power circuit 301.

[0202] In the fourth circulation loop, the ten-way valve 1024 connects the passage between the condenser 105 and the radiator 401, so that the condenser 105, the water pump 106b and the radiator 401 are connected in sequence through the coolant channel. When the coolant circulates in the circulation loop, the radiator 401 can cool the condenser 105.

[0203] It should be noted that, in the operating mode shown in FIG. 39 , the electric heater 107 is in an off state.

[0204] In other possible embodiments, the first heat exchange plate 202 can also be cooled by the radiator 401. For example, port 7 of the ten-way valve 1024 can be connected to port 4, and port 1 to port 2. In this case, the first heat exchange plate 202, the electric heater 107, the water pump 106a, the water pump 106b, and the radiator 401 are sequentially connected via the coolant pipe to form a circulation loop, allowing the coolant to circulate between the first heat exchange plate 202 and the radiator 401, thereby dissipating heat from the first heat exchange plate 202 through the radiator 401.

[0205] In addition, referring to FIG. 40 , FIG. 40 shows the operation mode of the energy storage device 100 when the ambient temperature is relatively suitable (such as in spring or autumn).

[0206] In this operating mode, the ten-way valve 1024 connects the coolant passages between the first heat exchange plate 202, the second heat exchange plate 302, and the radiator 401. This connects the first heat exchange plate 202, the electric heater 107, the water pump 106b, the water pump 106a, the radiator 401, and the second heat exchange plate 302 in sequence through the coolant passages, forming a circulation loop. As the coolant circulates through this circulation loop, the radiator 401 cools the first and second heat exchange plates 202, 302, thereby dissipating heat from the battery and power circuit 301.

[0207] It is worth mentioning that in the operating mode shown in FIG40 , the electric heater 107 is in the off state. Furthermore, since the heat dissipation requirements of the battery and power circuit 301 can be met solely by the radiator 401 when the ambient temperature is relatively suitable, the compressor 5, the first evaporator 103, and the condenser 105 are all in the off state in this operating mode.

[0208] Referring to Figure 41, Figure 41 shows the operating mode of the energy storage device when the ambient temperature is low (such as low temperatures in winter).

[0209] During the operation of the energy storage device, the power circuit 301 always generates a large amount of heat. In winter, under low temperature conditions, in order to ensure the charge and discharge performance of the battery 201, the battery 201 needs to be heated. Based on this, it can be considered to use the heat generated by the power circuit 301 to heat the battery 201. In specific implementation, as shown in Figure 41, the ten-way valve 1024 connects the coolant passage between the first heat exchange plate 202 and the second heat exchange plate 302, so that the first heat exchange plate 202, the electric heater 107, the water pump 106 and the second heat exchange plate 302 are connected in sequence through the coolant channel to form a circulation loop. Then, during the circulation of the coolant in this circulation loop, the heat generated by the power circuit 301 can be transferred to the first heat exchange plate 202 to achieve heating of the battery 201, thereby achieving efficient use of heat. Among them, in this operating mode, the electric heater 107 can be turned on or off as needed, which will not be described in detail here.

[0210] In the operating mode shown in FIG41 , the compressor 5, the first evaporator 103, and the condenser 105 are all in the closed state. In actual application, as shown in FIG42a , the first throttle valve 104 and the compressor 5 can also be set to the open state as needed. That is, the working principle of the heat pump is used to make the condenser 105 have a higher temperature, so that the condenser 105 can heat the first heat exchange plate 202. In specific implementation, FIG42a shows three circulation loops:

[0211] The first circulation loop includes the compressor 5, the condenser 105, the first throttle valve 104 and the first evaporator 103 which are sequentially connected through the refrigerant pipeline. When the refrigerant circulates in the circulation loop, the condenser 105 can have a higher temperature.

[0212] In the second circulation loop, ten-way valve 1024 connects the coolant passages between the first heat exchange plate 202, condenser 105, and second heat exchange plate 302. This connects the first heat exchange plate 202, electric heater 107, water pump 106a, condenser 105, and second heat exchange plate 302 sequentially through the coolant passages. As the coolant circulates through this circulation loop, heat generated by both the power circuit 301 and the condenser 105 are transferred to the first heat exchange plate 202, heating the battery.

[0213] In the third circulation loop, the ten-way valve 1024 connects the coolant passage between the first evaporator 103 and the second heat exchange plate 302, thereby connecting the first evaporator 103, the radiator 401, and the water pump 106b sequentially through the coolant passage. It is understood that in heat pump mode, ambient heat can be transferred to the condenser 105 via the first evaporator 103. Therefore, the temperature of the first evaporator 103 is relatively low. To dissipate the cooling energy of the first evaporator 103, the temperature of the first evaporator 103 is increased. On the one hand, the first evaporator 103 can be heated by the electric heater 107; on the other hand, the heat of the first evaporator 103 can be increased through heat exchange between the radiator 401 and the first evaporator 103.

[0214] When the energy storage system 100 operates in heat pump mode, other possible circulation loops can be formed by connecting the first heat exchange plate 202 and the condenser 105 in series. For example, see Figure 42b , where the first heat exchange plate 202, electric heater 107, water pump 106a, and condenser 105 are sequentially connected via coolant channels. As the coolant circulates through this circulation loop, the heat generated by the condenser 105 is transferred to the first heat exchange plate 202, thereby heating the battery.

[0215] As shown in Figure 43, Figure 43 illustrates the operating mode of the energy storage device 100 when the ambient temperature is low (such as in winter), and the heat generated by the power circuit 301 and the heat generated by the condenser 105 in heat pump mode cannot meet the heating needs of the battery 201. In this mode, the electric heater 107 is turned on, and the first heat exchange plate 202, the electric heater 107, the water pump 106a, and the second heat exchange plate 302 are connected in sequence through the coolant pipe to form a circulation loop. The electric heater 107 and the second heat exchange plate 302 heat the coolant circulating in the circulation loop to achieve heating of the battery 201.

[0216] It is worth mentioning that, in the operating mode shown in FIG43 , the compressor 5 , the first evaporator 103 and the condenser 105 are all in the closed state.

[0217] When the energy storage device 100 operates under low ambient temperature conditions, in addition to heating the battery through the electric heater 107, other possible methods can also be used. For example, referring to Figure 44, Figure 44 is another specific structural schematic diagram of the energy storage device 100 provided in an embodiment of the present application. Compared with the energy storage device 100 shown in Figure 38, the energy storage device 100 in Figure 44 adds a bypass valve 108 to the compressor 5. The bypass valve 108 is arranged in parallel with the compressor 5, wherein the bypass valve 108 can be, for example, a solenoid valve. In this way, when the compressor 5 is operating in the heating state, the bypass valve 108 is opened to reduce the pressure of the compressor 5, so that the heat generated by the compressor 5 itself can be used to heat the battery 201. When the compressor is operating in the cooling state, the bypass valve 108 is closed. It can be understood that when the heat generated by the compressor 5 itself can meet the heating requirements of the battery, the electric heater 107 in the energy storage device 100 can be removed, which is conducive to improving the energy efficiency of the energy storage device 100.

[0218] Other possible operating modes of the energy storage device 100 provided in FIG. 44 can be referred to as shown in FIG. 39 to FIG. 41 , FIG. 42 a , FIG. 42 b , and FIG. 43 , and will not be described in detail here.

[0219] Referring to Figure 45 , Figure 45 is a schematic diagram illustrating another specific structure of an energy storage device 100 provided in an embodiment of the present application. Compared to the energy storage device 100 shown in Figure 44 , the energy storage device 100 shown in Figure 45 further includes a dehumidification module 109 in the thermal management module 1. This dehumidification module 109 can be configured similarly to the dehumidification module 109 in any of the aforementioned embodiments and will not be further described herein.

[0220] In the energy storage device 100 shown in FIG45 , the compressor 5, dehumidification module 109, and condenser 105 are sequentially connected via refrigerant pipes to form a dehumidification cycle. As the refrigerant circulates through the loop formed by the compressor 5, dehumidification module 109, and condenser 105, the temperature of the second evaporator 1091 is relatively low. When the ambient humidity is high and the temperature of the second evaporator 1091 is below the dew point of the air, water vapor in the air condenses into water droplets, which are then discharged through the drainage pipe, thereby reducing the humidity in the energy storage device 100.

[0221] Because the second evaporator 1091 has a lower temperature, it can also lower the temperature of the air within the energy storage device 100, helping to maintain a lower temperature environment for the batteries. Furthermore, the dehumidification module 109 can also include a fan, which can be positioned near the second evaporator 1091 to accelerate the flow of air through the second evaporator 1091, thereby lowering the temperature of the second evaporator 1091 and improving the dehumidification effect of the dehumidification module 109.

[0222] In the energy storage device 100 shown in FIG45 , the circulation loop formed by the first heat exchange plate 202 and the radiator 401 can effectively reduce the temperature of the battery surface. Furthermore, the lower temperature of the second evaporator 1091 in the dehumidification module 109 can effectively reduce the temperature of the air within the energy storage device 100, thereby effectively improving the heat dissipation effect on the battery 201. Furthermore, the second evaporator 1091 in the dehumidification module 109 can condense moisture within the energy storage device 100, thereby reducing the humidity of the air within the energy storage device 100. This allows the battery 201 to operate in a relatively dry environment, which helps ensure the reliability and service life of the battery 201.

[0223] It is understood that in the embodiment provided in FIG45 , the combination of the second evaporator 1091 and the second throttle valve 1092 is arranged in parallel with the combination of the first evaporator 103 and the first throttle valve 104, so that the two do not affect each other. Specifically, when performing dehumidification, the second throttle valve 1092 can be opened and the first throttle valve 104 can be closed, so that the refrigerant can circulate in the circulation loop composed of the compressor 5, condenser 105, second throttle valve 1092, and second evaporator 1091, thereby maintaining a lower temperature in the second evaporator 1091 to achieve the dehumidification function. In addition, the first throttle valve 104 and the second throttle valve 1092 can be opened simultaneously, that is, the refrigerant can circulate in the circulation loop composed of the compressor 5, condenser 105, first throttle valve 104, and first evaporator 103, and can also circulate in the circulation loop composed of the compressor 5, condenser 105, second throttle valve 1092, and second evaporator 1091. As a result, both the first evaporator 103 and the second evaporator 1091 have relatively low temperatures. That is, the first evaporator 103 can cool the battery, while the second evaporator 1091 can dehumidify. Of course, in practice, the first throttle valve 104 can be opened and the second throttle valve 1092 closed, allowing the refrigerant to circulate in the loop consisting of the compressor 5, the condenser 105, the first throttle valve 104, and the first evaporator 103. This allows the first evaporator 103 to have a relatively low temperature, thereby cooling the battery 201.

[0224] In summary, in the energy storage device 100 provided in FIG. 45 of the present application, the first evaporator 103 and the second evaporator 1091 in the thermal management module 1 are decoupled from each other, which can avoid mutual influence between the two. In addition, the combination of the first evaporator 103 and the first throttle valve 104 and the combination of the second evaporator 1091 and the second throttle valve 1092 share the same condenser 105 and compressor 5, thereby effectively reducing the number of components used, which is conducive to reducing the volume and cost of the adjustment device and facilitating the realization of an integrated design. Of course, in other possible embodiments, the first evaporator 103 and the second evaporator 1091 can also be arranged in series, so that the first evaporator 103 and the second evaporator 1091 can share a throttle valve. For example, only the first throttle valve 104 or the second throttle valve 1092 can be set, thereby reducing the number of components used, which is conducive to reducing production costs.

[0225] Other possible operating modes of the energy storage device 100 provided in FIG. 45 can be referred to those shown in FIG. 39 to FIG. 41 , FIG. 42 a , FIG. 42 b , and FIG. 43 to FIG. 44 , and are not described in detail here.

[0226] It is worth mentioning that in the embodiment of the present application, the setting of the dehumidification module 109 is independent of the bypass of the compressor 5, that is, the dehumidification module 109 and the bypass valve 108 at the compressor 5 may not be set at the same time. For example, referring to Figure 46, in the energy storage device 100 shown in Figure 46, the bypass valve 108 is not provided at the compressor 5, and the thermal management system is provided with a dehumidification module 109, which still enables the energy storage device 100 to operate in multiple modes for efficient regulation of the battery temperature. Among them, the operating mode of the energy storage device 100 shown in Figure 46 can be shown with reference to Figures 39 to 41, Figure 42a, Figure 42b, and Figures 43 to 45, and will not be described in detail here.

[0227] In an embodiment of the present application, the valve ports of the valve body assembly may also be greater than ten, so as to reserve valve ports for connecting to other possible pipelines, which is conducive to improving the scalability of the energy storage device 100. For example, referring to Figure 47, Figure 47 is another specific structural schematic diagram of the energy storage device 100 provided in an embodiment of the present application. In the energy storage device 100, the valve body assembly 102 is a twelve-way valve 1025, and the twelve-way valve 1025 can provide twelve valve ports for connecting or disconnecting multiple coolant interfaces. In actual applications, the connection status of different coolant interfaces can be effectively adjusted through the valve body assembly 102 according to actual needs, so that the energy storage device 100 shown in Figure 47 can operate in the corresponding operating mode.

[0228] In addition, the radiator module 4 of the energy storage device 100 shown in FIG47 includes two radiators, each of which can be connected between two coolant interfaces. For easy distinction, the two radiators can be respectively recorded as radiator 401a and radiator 401b.

[0229] Next, several operating modes of the energy storage device 100 shown in Figure 47 are illustrated.

[0230] When the ambient temperature is high (such as in high temperature and high humidity in summer), refer to Figure 48, which is a schematic diagram of the circulation loop of the energy storage device 100 shown in Figure 47 in this operating mode. Figure 48 shows four circulation loops in this operating mode:

[0231] The first circulation loop includes the compressor 5, the condenser 105, the first throttle valve 104, and the first evaporator 103, which are sequentially connected through the refrigerant pipeline. The first circulation loop is a refrigerant circulation loop. During the refrigerant circulation in the circulation loop, the first evaporator 103 can be kept at a relatively low temperature.

[0232] In the second circulation loop, the twelve-way valve 1025 connects the first heat exchange plate 202 and the first evaporator 103, thereby connecting the first heat exchange plate 202, the electric heater 107, the water pump 106a, and the first evaporator 103 sequentially through the coolant channel. Since the temperature of the first evaporator 103 is relatively low at this point, the coolant circulating in this circulation loop exchanges heat with the first evaporator 103, cooling the first heat exchange plate 202 and thus dissipating heat from the battery.

[0233] In the third circulation loop, a twelve-way valve 1025 connects the coolant passage between the second heat exchange plate 302 and the radiator 401a. It is understood that to allow coolant to flow between the second heat exchange plate 302 and the radiator 401a, as shown in Figure 48 , a water pump 106c can be installed in the passage connecting the two, thereby connecting the second heat exchange plate 302, the radiator 401a, and the water pump 106c sequentially through the coolant passage. As the coolant circulates in this circulation loop, the radiator 401a can cool the second heat exchange plate 302, thereby cooling the second heat exchange plate 302 and dissipating heat from the power circuit 301.

[0234] In the fourth circulation loop, the twelve-way valve 1025 connects the passage between the condenser 105 and the radiator 401b, so that the condenser 105, the water pump 106b and the radiator 401 are connected in sequence through the coolant channel. When the coolant circulates in the circulation loop, the radiator 401 can cool the condenser 105.

[0235] It should be noted that, in the operating mode shown in FIG. 48 , the electric heater 107 is in an off state.

[0236] In other possible embodiments, the first heat exchange plate 202 can also be cooled by the radiator 401a. For example, port 12 of the twelve-way valve 1025 can be connected to port 4, and port 1 to port 11. In this case, the first heat exchange plate 202, the electric heater 107, and the radiator 401a are sequentially connected via the coolant pipe to form a circulation loop, allowing the coolant to circulate between the first heat exchange plate 202 and the radiator 401a, dissipating heat from the first heat exchange plate 202 through the radiator 401a.

[0237] In addition, referring to FIG. 49 , FIG. 49 shows the operating mode of the energy storage device 100 when the ambient temperature is relatively suitable (such as in spring or autumn).

[0238] In this operating mode, the twelve-way valve 1025 connects the coolant passage between the first heat exchange plate 202 and the radiator 401b, thereby connecting the first heat exchange plate 202, the electric heater 107, the water pump 106a, and the radiator 401b sequentially through the coolant passage to form a circulation loop. As the coolant circulates through this circulation loop, the radiator 401b cools the first heat exchange plate 202, thereby dissipating heat from the battery 201.

[0239] Furthermore, the twelve-way valve 1025 connects the coolant passage between the second heat exchange plate 302 and the radiator 401a, thereby connecting the second heat exchange plate 302, the radiator 401a, and the water pump 106c sequentially through the coolant passage to form a circulation loop. As the coolant circulates through this circulation loop, the radiator 401a cools the second heat exchange plate 302, thereby dissipating heat from the power circuit 301.

[0240] It is worth mentioning that in the operating mode shown in FIG49 , the electric heater 107 is in the off state. Furthermore, since the heat dissipation requirements of the battery 201 and the power circuit 301 can be met solely by the radiator 401a and the radiator 401b when the ambient temperature is relatively suitable, the compressor 5, the first evaporator 103, and the condenser 105 are all in the off state in this operating mode.

[0241] Referring to Figure 50, Figure 50 shows the operating mode of the energy storage device when the ambient temperature is low (such as low temperatures in winter).

[0242] During the operation of the energy storage device 100, the power circuit 301 always generates a large amount of heat. In winter, under low temperature conditions, in order to ensure the charge and discharge performance of the battery 201, the battery 201 needs to be heated. Based on this, it can be considered to use the heat generated by the power circuit 301 to heat the battery 201. In specific implementation, as shown in Figure 50, the twelve-way valve 1025 connects the coolant passage between the first heat exchange plate 202 and the second heat exchange plate 302, so that the first heat exchange plate 202, the electric heater 107, the water pump 106c and the second heat exchange plate 302 are connected in sequence through the coolant channel to form a circulation loop. Then, during the circulation of the coolant in this circulation loop, the heat generated by the power circuit 301 can be transferred to the first heat exchange plate 202 to achieve heating of the battery 201, thereby achieving efficient use of heat. Among them, in this operating mode, the electric heater 107 can be turned on or off as needed, which will not be described in detail here.

[0243] In the operating mode shown in Figure 50 , the compressor 5, first evaporator 103, and condenser 105 are all in the closed state. However, in actual application, as shown in Figure 51a , the first throttle valve 104 and the compressor 5 can also be set to the open state as needed. That is, the working principle of the heat pump is used to make the condenser 105 reach a higher temperature, so that the condenser 105 can heat the first heat exchange plate 202. In specific implementation, Figure 51a shows four circulation loops:

[0244] The first circulation loop includes the compressor 5, the condenser 105, the first throttle valve 104 and the first evaporator 103 which are sequentially connected through the refrigerant pipeline. When the refrigerant circulates in the circulation loop, the condenser 105 can have a higher temperature.

[0245] In the second circulation loop, twelve-way valve 1025 connects the coolant passages between the first heat exchange plate 202, condenser 105, and second heat exchange plate 302. This connects the first heat exchange plate 202, electric heater 107, water pump 106b, and condenser 105 sequentially through the coolant passages. As the coolant circulates through this circulation loop, the heat generated by condenser 105 is transferred to the first heat exchange plate 202, thereby heating the battery 201.

[0246] In the third circulation loop, the twelve-way valve 1025 connects the coolant passage between the first evaporator 103 and the radiator 401b, thereby connecting the first evaporator 103, the radiator 401b, and the water pump 106a sequentially through the coolant passage. It is understood that in heat pump mode, ambient heat can be transferred to the condenser 105 via the first evaporator 103. Therefore, the temperature of the first evaporator 103 is relatively low. To dissipate the cooling energy of the first evaporator 103, the temperature of the first evaporator 103 is increased. On the one hand, the first evaporator 103 can be heated by the electric heater 107; on the other hand, the heat of the first evaporator 103 can be increased through heat exchange between the radiator 401 and the first evaporator 103.

[0247] In the fourth circulation loop, the twelve-way valve 1025 connects the coolant passage between the second heat exchange plate 302 and the radiator 401a, thereby connecting the second heat exchange plate 302, the radiator 401a, and the water pump 106c sequentially through the coolant passage. As the coolant circulates through this circulation loop, the radiator 401a cools the coolant, thereby cooling the second heat exchange plate 302 and dissipating heat from the power circuit 301.

[0248] When the energy storage system 100 operates in heat pump mode, other possible circulation loops can be formed by connecting the first heat exchange plate 202 and the condenser 105 in series. For example, see Figure 51b , where the first heat exchange plate 202, electric heater 107, water pump 106a, and condenser 105 are sequentially connected via coolant channels. As the coolant circulates through this circulation loop, the heat generated by the condenser 105 is transferred to the first heat exchange plate 202, thereby heating the battery.

[0249] As shown in Figure 52, Figure 52 illustrates the operating mode of the energy storage device 100 when the ambient temperature is low (such as in winter), and the heat generated by the power circuit 301 and the heat generated by the condenser 105 in heat pump mode cannot meet the heating needs of the battery 201. In this mode, the electric heater 107 is turned on, and the first heat exchange plate 202, the electric heater 107, the water pump 106c, and the second heat exchange plate 302 are connected in sequence through the coolant pipe to form a circulation loop. The electric heater 107 and the second heat exchange plate 302 heat the coolant circulating in the circulation loop to achieve heating of the battery 201.

[0250] It is worth mentioning that, in the operating mode shown in FIG52 , the compressor 5 , the first evaporator 103 and the condenser 105 are all in the closed state.

[0251] When the energy storage device 100 operates under low ambient temperature conditions, in addition to heating the battery through the electric heater 107, other possible methods can also be used. For example, referring to Figure 53, Figure 53 is another specific structural schematic diagram of the energy storage device 100 provided in an embodiment of the present application. Compared with the energy storage device 100 shown in Figure 47, the energy storage device 100 in Figure 53 adds a bypass valve 108 to the compressor 5. The bypass valve 108 is arranged in parallel with the compressor 5, wherein the bypass valve 108 can be, for example, a solenoid valve. In this way, when the compressor 5 is operating in the heating state, the bypass valve 108 is opened to reduce the pressure of the compressor 5, so that the heat generated by the compressor 5 itself can be used to heat the battery 201. When the compressor is operating in the cooling state, the bypass valve 108 is closed. It can be understood that when the heat generated by the compressor 5 itself can meet the heating requirements of the battery, the electric heater 107 in the energy storage device 100 can be removed, which is conducive to improving the energy efficiency of the energy storage device 100.

[0252] Other possible operating modes of the energy storage device 100 provided in FIG53 can be referred to those shown in FIG48 to FIG50, FIG51a, FIG51b, and FIG52, and will not be described in detail here.

[0253] Referring to Figure 54 , which is a schematic diagram illustrating another specific structure of an energy storage device 100 provided in an embodiment of the present application, compared to the energy storage device 100 shown in Figure 53 , the energy storage device 100 shown in Figure 55 further includes a dehumidification module 109 in the thermal management module 1. This dehumidification module 109 can be configured similarly to the dehumidification module 109 in any of the aforementioned embodiments and will not be further described herein.

[0254] In the energy storage device 100 shown in FIG54 , the compressor 5, dehumidification module 109, and condenser 105 are sequentially connected via refrigerant pipes to form a dehumidification cycle. As the refrigerant circulates through the loop formed by the compressor 5, dehumidification module 109, and condenser 105, the temperature of the second evaporator 1091 is relatively low. When the ambient humidity is high and the temperature of the second evaporator 1091 is below the dew point of the air, water vapor in the air condenses into water droplets, which are then discharged through the drainage pipe, thereby reducing the humidity in the energy storage device 100.

[0255] Because the second evaporator 1091 has a lower temperature, it can also lower the temperature of the air within the energy storage device 100, helping to maintain a lower temperature environment for the batteries. Furthermore, the dehumidification module 109 can also include a fan, which can be positioned near the second evaporator 1091 to accelerate the flow of air through the second evaporator 1091, thereby lowering the temperature of the second evaporator 1091 and improving the dehumidification effect of the dehumidification module 109.

[0256] In the energy storage device 100 shown in FIG54 , the circulation loop formed by the first heat exchange plate 202 and the radiator 401 can effectively reduce the temperature of the battery surface. Furthermore, the lower temperature of the second evaporator 1091 in the dehumidification module 109 can effectively reduce the temperature of the air within the energy storage device 100, thereby effectively improving the heat dissipation effect on the battery 201. Furthermore, the second evaporator 1091 in the dehumidification module 109 can condense moisture within the energy storage device 100, thereby reducing the humidity of the air within the energy storage device 100. This allows the battery 201 to operate in a relatively dry environment, which helps ensure the reliability and service life of the battery 201.

[0257] It will be appreciated that in the embodiment provided in FIG54 , the combination of the second evaporator 1091 and the second throttle valve 1092 is arranged in parallel with the combination of the first evaporator 103 and the first throttle valve 104, so that the two do not affect each other. Specifically, during dehumidification, the second throttle valve 1092 can be opened and the first throttle valve 104 can be closed, so that the refrigerant can circulate in the circulation loop consisting of the compressor 5, condenser 105, second throttle valve 1092, and second evaporator 1091, thereby maintaining a lower temperature in the second evaporator 1091 to achieve the dehumidification function. Alternatively, the first throttle valve 104 and the second throttle valve 1092 can be opened simultaneously, so that the refrigerant can circulate in the circulation loop consisting of the compressor 5, condenser 105, first throttle valve 104, and first evaporator 103, and can also circulate in the circulation loop consisting of the compressor 5, condenser 105, second throttle valve 1092, and second evaporator 1091. As a result, both the first evaporator 103 and the second evaporator 1091 have relatively low temperatures. That is, the first evaporator 103 can cool the battery, while the second evaporator 1091 can dehumidify. Of course, in practice, the first throttle valve 104 can be opened and the second throttle valve 1092 closed, allowing the refrigerant to circulate in the loop consisting of the compressor 5, the condenser 105, the first throttle valve 104, and the first evaporator 103. This allows the first evaporator 103 to have a relatively low temperature, thereby cooling the battery 201.

[0258] In summary, in the energy storage device 100 provided in FIG. 54 of the present application, the first evaporator 103 and the second evaporator 1091 in the thermal management module 1 are decoupled from each other, which can avoid mutual influence between the two. In addition, the combination of the first evaporator 103 and the first throttle valve 104 and the combination of the second evaporator 1091 and the second throttle valve 1092 share the same condenser 105 and compressor 5, thereby effectively reducing the number of components used, which is conducive to reducing the volume and cost of the adjustment device and facilitating the realization of an integrated design. Of course, in other possible embodiments, the first evaporator 103 and the second evaporator 1091 can also be arranged in series, so that the first evaporator 103 and the second evaporator 1091 can share a throttle valve. For example, only the first throttle valve 104 or the second throttle valve 1092 can be set, thereby reducing the number of components used, which is conducive to reducing production costs.

[0259] Other possible operating modes of the energy storage device 100 provided in FIG. 54 can be referred to those shown in FIG. 48 to FIG. 50 , FIG. 51 a , FIG. 51 b , and FIG. 52 to FIG. 53 , and are not described in detail here.

[0260] It is worth mentioning that in the embodiment of the present application, the setting of the dehumidification module 109 is independent of the bypass of the compressor 5, that is, the dehumidification module 109 and the bypass valve 108 at the compressor 5 may not be set at the same time. For example, referring to Figure 55, in the energy storage device 100 shown in Figure 55, the bypass valve 108 is not provided at the compressor 5, and the thermal management system is provided with a dehumidification module 109, which still enables the energy storage device 100 to operate in multiple modes for efficient regulation of the battery temperature. Among them, the operating mode of the energy storage device 100 shown in Figure 55 can be shown with reference to Figures 48 to 50, Figure 51a, Figure 51b, and Figures 52 to 54, and will not be described in detail here.

[0261] It can be understood from the introduction of the setting method of the valve body assembly of the thermal management module 1 in the above text of this application that in the embodiment of the present application, the above-mentioned twelve-way valve 1025 can also be replaced by two six-way valves. In specific implementation, reference can be made to Figure 56, which is another specific structural schematic diagram of the energy storage device 100 provided in the embodiment of the present application. The thermal management module 1 of the energy storage device 100 includes two six-way valves, each of which includes six valve ports. For ease of distinction, the two six-way valves can be respectively recorded as six-way valve 1026a and six-way valve 1026b. The first evaporator 103 is connected between the six-way valve 1026a and the six-way valve 1026b, the condenser 105 is connected between the six-way valve 1026b and a coolant interface 1011, and the other valve ports of the two six-way valves are respectively connected to a coolant interface 1011. The six-way valve 1026a and the six-way valve 1026b can be used to connect or disconnect the passages between the first heat exchange plate 202 , the second heat exchange plate 302 , the radiator 401a , the radiator 401b , the condenser 105 and the first evaporator 103 .

[0262] In practical applications, the connectivity of different coolant interfaces can be effectively adjusted using six-way valves 1026a and 1026b, depending on actual needs, to enable the energy storage device 100 shown in FIG56 to operate in the corresponding operating mode. The implementation of each operating mode of the energy storage device 100 shown in FIG56 can be seen in FIG48 to FIG50, FIG51a, FIG51b, and FIG52 to FIG53, and will not be further described here.

[0263] Referring to Figure 57, Figure 57 is another specific structural schematic diagram of the energy storage device 100 provided in an embodiment of the present application. Compared with the energy storage device 100 shown in Figure 56, the energy storage device 100 in Figure 57 adds a bypass valve 108 to the compressor 5, and the bypass valve 108 is arranged in parallel with the compressor 5, wherein the bypass valve 108 can be, for example, a solenoid valve. In this way, when the compressor 5 is operating in a heating state, the bypass valve 108 is opened to reduce the pressure of the compressor 5, so that the heat generated by the compressor 5 itself can be used to heat the battery 201. When the compressor is operating in a cooling state, the bypass valve 108 is closed. It can be understood that when the heat generated by the compressor 5 itself can meet the heating requirements of the battery, the electric heater 107 in the energy storage device 100 can be removed, which is conducive to improving the energy efficiency of the energy storage device 100.

[0264] In addition, referring to Figure 58 , Figure 58 is a schematic diagram of another specific structure of the energy storage device 100 provided in an embodiment of the present application. Compared to the energy storage device 100 shown in Figure 57 , the energy storage device 100 shown in Figure 58 further includes a dehumidification module 109 in the thermal management module 1. This dehumidification module 109 can be configured similarly to the dehumidification module 109 in any of the aforementioned embodiments and will not be further described herein.

[0265] In the energy storage device 100 shown in FIG58 , the compressor 5, dehumidification module 109, and condenser 105 are sequentially connected via refrigerant pipes to form a dehumidification cycle. As the refrigerant circulates through the loop formed by the compressor 5, dehumidification module 109, and condenser 105, the temperature of the second evaporator 1091 is relatively low. When the ambient humidity is high and the temperature of the second evaporator 1091 is below the dew point of the air, water vapor in the air condenses into water droplets, which are then discharged through the drainage pipe, thereby reducing the humidity in the energy storage device 100.

[0266] Because the second evaporator 1091 has a lower temperature, it can also lower the temperature of the air within the energy storage device 100, helping to maintain a lower temperature environment for the batteries. Furthermore, the dehumidification module 109 can also include a fan, which can be positioned near the second evaporator 1091 to accelerate the flow of air through the second evaporator 1091, thereby lowering the temperature of the second evaporator 1091 and improving the dehumidification effect of the dehumidification module 109.

[0267] In the energy storage device 100 shown in FIG58 , the circulation loop formed by the first heat exchange plate 202 and the radiator 401 can effectively reduce the temperature of the battery surface. Furthermore, the lower temperature of the second evaporator 1091 in the dehumidification module 109 can effectively reduce the temperature of the air within the energy storage device 100, thereby effectively improving the heat dissipation effect on the battery 201. Furthermore, the second evaporator 1091 in the dehumidification module 109 can condense moisture within the energy storage device 100, thereby reducing the humidity of the air within the energy storage device 100. This allows the battery 201 to operate in a relatively dry environment, which helps ensure the reliability and service life of the battery 201.

[0268] It will be appreciated that in the embodiment provided in FIG. 58 , the combination of the second evaporator 1091 and the second throttle valve 1092 is arranged in parallel with the combination of the first evaporator 103 and the first throttle valve 104, so that the two do not affect each other. Specifically, during dehumidification, the second throttle valve 1092 can be opened and the first throttle valve 104 can be closed, allowing the refrigerant to circulate in the circulation loop consisting of the compressor 5, condenser 105, second throttle valve 1092, and second evaporator 1091, thereby maintaining a lower temperature in the second evaporator 1091 to achieve the dehumidification function. Alternatively, the first throttle valve 104 and the second throttle valve 1092 can be opened simultaneously, meaning that the refrigerant can circulate in the circulation loop consisting of the compressor 5, condenser 105, first throttle valve 104, and first evaporator 103, and can also circulate in the circulation loop consisting of the compressor 5, condenser 105, second throttle valve 1092, and second evaporator 1091. As a result, both the first evaporator 103 and the second evaporator 1091 have relatively low temperatures. That is, the first evaporator 103 can cool the battery, while the second evaporator 1091 can dehumidify. Of course, in practice, the first throttle valve 104 can be opened and the second throttle valve 1092 closed, allowing the refrigerant to circulate in the loop consisting of the compressor 5, the condenser 105, the first throttle valve 104, and the first evaporator 103. This allows the first evaporator 103 to have a relatively low temperature, thereby cooling the battery 201.

[0269] In summary, in the energy storage device 100 provided in FIG. 58 of the present application, the first evaporator 103 and the second evaporator 1091 in the thermal management module 1 are decoupled from each other, which can avoid mutual influence between the two. In addition, the combination of the first evaporator 103 and the first throttle valve 104 and the combination of the second evaporator 1091 and the second throttle valve 1092 share the same condenser 105 and compressor 5, thereby effectively reducing the number of components used, which is conducive to reducing the volume and cost of the adjustment device and facilitating the realization of an integrated design. Of course, in other possible embodiments, the first evaporator 103 and the second evaporator 1091 can also be arranged in series, so that the first evaporator 103 and the second evaporator 1091 can share a throttle valve. For example, only the first throttle valve 104 or the second throttle valve 1092 can be set, thereby reducing the number of components used, which is conducive to reducing production costs.

[0270] Other possible operating modes of the energy storage device 100 provided in FIG. 58 can be referred to those shown in FIG. 48 to FIG. 53 above, and will not be described in detail here.

[0271] It is worth noting that in the embodiment of the present application, the provision of the dehumidification module 109 is independent of the bypass valve 108 at the compressor 5. That is, the dehumidification module 109 and the bypass valve 108 at the compressor 5 can be provided at different times. For example, referring to FIG. 59 , in the energy storage device 100 shown in FIG. 59 , the bypass valve 108 is not provided at the compressor 5, and the thermal management system is provided with the dehumidification module 109. This still enables the energy storage device 100 to operate in multiple modes for efficient regulation of the battery temperature.

[0272] In the energy storage device 100 provided in the embodiment of the present application, the valve assembly 102 can be connected between the first heat exchange plate 202 and the first evaporator 103 to open or close the passage between the first heat exchange plate 202 and the first evaporator 103. When the energy storage device 100 operates in a high-temperature mode, the valve assembly 102 can open the passage between the first heat exchange plate 202 and the first evaporator 103 to cool the first heat exchange plate 202 via the first evaporator 103, thereby dissipating heat from the battery 201. The valve assembly 102 is also connected between the first heat exchange plate 202 and the radiator 401 to open or close the passage between the first heat exchange plate 202 and the radiator 401. When the energy storage device 100 operates in a suitable temperature mode, the valve assembly 102 can open the passage between the first heat exchange plate 202 and the radiator 401 to cool the first heat exchange plate 202 via the radiator 401, thereby dissipating heat from the battery 201. The valve assembly 102 is also connected between the first heat exchange plate 202 and the second heat exchange plate 302, and is used to open or close the passage between the first heat exchange plate 202 and the second heat exchange plate 302. When the energy storage device 100 operates in low-temperature mode, the valve assembly 102 can open the passage between the first heat exchange plate 202 and the second heat exchange plate 302, thereby heating the first heat exchange plate 202 with the heat generated by the power circuit 301, thereby achieving heat recovery. The valve assembly 102 is also connected between the first heat exchange plate 202 and the condenser 105, and is used to open or close the passage between the first heat exchange plate 202 and the condenser 105. In this case, the passage between the first heat exchange plate 202 and the condenser 105 can be opened through the valve assembly 102, so that the heat generated by the condenser 105 can heat the first heat exchange plate 202, thereby allowing the energy storage device to operate in heat pump mode. The valve body assembly 102 is also connected between the second heat exchange plate 302 and the radiator 401, and is used to open or close the passage between the second heat exchange plate 302 and the radiator 401. When the valve body assembly 102 opens the passage between the second heat exchange plate 302 and the radiator 401, the second heat exchange plate 302 is cooled via the radiator 401, thereby dissipating heat from the power circuit 301. In addition, the valve body assembly 102 is also connected between the radiator 401 and the condenser 105, and is used to open or close the passage between the radiator 401 and the condenser 105. When the valve body assembly 102 opens the passage between the radiator 401 and the condenser 105, the condenser 105 is cooled via the radiator 401. It can be seen from this that in the embodiment of the present application, the connection conditions of different coolant interfaces 1011 and the connection conditions of each coolant interface 1011 with the first evaporator 103 or the condenser 105 can be adaptively adjusted through the valve body assembly 102, so that the operating mode of the energy storage device 100 can be switched, thereby enabling the energy storage device 100 to operate in multiple modes.Furthermore, since the energy storage device 100 can regulate the temperature of the battery 201 by circulating the coolant between the modules connected by the coolant pipes when operating in each mode, it can effectively improve the efficiency of the temperature regulation of the battery 201, thereby helping to improve the operating energy efficiency of the energy storage device 100.

[0273] It can be understood that based on the energy storage device provided in the above-mentioned embodiments of the present application, in actual applications, the number of valve bodies, the number of valve ports, and the docking conditions between each valve port and the coolant interface of the valve body assembly 102 can be adaptively adjusted according to actual needs, and the number and specific setting positions of the water pumps and radiators can be adaptively adjusted, which should all be understood to fall within the scope of protection of the present application.

[0274] The energy storage device provided in the above embodiment of the present application can be applied to various energy storage scenarios, as shown in Figure 60, which is a structural schematic diagram of the photovoltaic storage system provided in the embodiment of the present application. The photovoltaic storage system may include a power conversion device 200, a power generation device 300 and the above-mentioned energy storage device 100. Among them, the power conversion device 200 is connected between the power generation device 300 and the energy storage device 100, and the power generation device 300 is used to store the generated electric energy into the battery of the energy storage device 100 through the power conversion device 200. The photovoltaic storage system uses the energy storage device 100 provided in the above embodiment, which can effectively improve the operational safety of the photovoltaic storage system.

[0275] In addition, the energy storage device 100 provided in the embodiment of the present application can also be applied to a charging network. For example, reference may be made to Figure 61, which is a structural diagram of a charging network provided in an embodiment of the present application. The charging network includes a charging pile 400 and the above-mentioned energy storage device 100, wherein the charging pile 400 is electrically connected to the battery in the energy storage device 100 through a cable, and the battery can provide its own stored electrical energy to the charging pile 400. The charging pile 400 has a connector 4001, which can be connected to a powered device (such as a vehicle) so that energy can be replenished to the powered device. The charging network applies the energy storage device 100 provided in the above embodiment, which can effectively improve the safety of the charging network and also help to improve the flexibility of the charging network during deployment.

[0276] In a specific configuration, the charging network may include multiple charging piles 400 , and each energy storage device 100 may provide power to multiple charging piles 400 , thereby effectively improving the flexibility of deployment.

[0277] The above are only specific embodiments of the present application, but the scope of protection of this application is not limited thereto. Any changes or substitutions that can be easily conceived by a person skilled in the art within the technical scope disclosed in this application should be included in the scope of protection of this application. Therefore, the scope of protection of this application should be based on the scope of protection of the claims.

Claims

1. An energy storage device, characterized in that: It includes thermal management module, battery module, power module and radiator module, among which: The thermal management module comprises a shell, a valve body assembly, a first evaporator and a condenser arranged in the shell, the shell comprises a plurality of coolant interfaces, two coolant ports of the first evaporator are connected to the valve body assembly, and two coolant ports of the condenser are connected between the valve body assembly and one of the coolant interfaces; The battery module comprises a first heat exchange plate, and the first heat exchange plate is connected to the valve body assembly through the two coolant interfaces; The power module includes a second heat exchange plate, the second heat exchange plate is connected to the valve body assembly through the two coolant interfaces, and the second heat exchange plate and the first heat exchange plate are connected to two different coolant interfaces, or the second heat exchange plate and the first heat exchange plate are connected in series and connected between the two coolant interfaces; The radiator module includes a radiator, which is connected to the valve body assembly via two coolant interfaces, the radiator and the first heat exchange plate are connected to two different coolant interfaces, and the radiator and the second heat exchange plate are connected to two different coolant interfaces.

2. The energy storage device according to claim 1, characterized in that: The thermal management module also includes a first throttle valve, which is arranged in the shell; the energy storage device also includes a compressor, which is arranged in the shell; or the compressor is arranged outside the shell, and the shell also includes two refrigerant interfaces, and the compressor is connected between the two refrigerant interfaces; the compressor, the first evaporator, the first throttle valve and the condenser are connected in sequence.

3. The energy storage device according to claim 2, characterized in that: The thermal management module also includes a dehumidification module, which is arranged in the shell, or the dehumidification module is arranged outside the shell; the dehumidification module includes a second evaporator and a second throttle valve, and the compressor, the second evaporator, the second throttle valve and the condenser are connected in sequence.

4. The energy storage device according to claim 2 or 3, characterized in that: The energy storage device further comprises a bypass valve, and the bypass valve is arranged in parallel with the compressor.

5. The energy storage device according to any one of claims 1 to 4, characterized in that: The valve body assembly is connected between the first heat exchange plate and the first evaporator, and is used to connect or disconnect the passage between the first heat exchange plate and the first evaporator.

6. The energy storage device according to any one of claims 1 to 5, characterized in that: The valve body assembly is also connected between the first heat exchange plate and the radiator, and is used to connect or disconnect the passage between the first heat exchange plate and the radiator.

7. The energy storage device according to any one of claims 1 to 6, characterized in that: The valve body assembly is also connected between the first heat exchange plate and the second heat exchange plate, and is used to connect or disconnect the passage between the first heat exchange plate and the second heat exchange plate.

8. The energy storage device according to any one of claims 1 to 7, characterized in that: The valve body assembly is also connected between the first heat exchange plate and the condenser, and is used to connect or disconnect the passage between the first heat exchange plate and the condenser.

9. The energy storage device according to any one of claims 1 to 8, characterized in that: The valve body assembly is also connected between the second heat exchange plate and the radiator, and is used to connect or disconnect the passage between the second heat exchange plate and the radiator.

10. The energy storage device according to any one of claims 1 to 9, characterized in that: The valve body assembly is also connected between the radiator and the condenser, and is used to connect or disconnect the passage between the radiator and the condenser.

11. The energy storage device according to any one of claims 1 to 10, characterized in that: The thermal management module further includes an electric heater, which is connected in series in a passage connected to the first heat exchange plate.

12. The energy storage device according to any one of claims 1 to 11, characterized in that: The valve body assembly includes a valve body, and the valve body includes a plurality of valve ports, each of which is used to be connected to the first evaporator, the condenser or at least one of the coolant interfaces.

13. The energy storage device according to any one of claims 1 to 12, characterized in that: The valve body assembly includes at least two valve bodies, each of the valve bodies includes a plurality of valve ports, and each of the valve ports is used to connect to the first evaporator, the condenser or at least one of the coolant interfaces.

14. A solar energy storage system, characterized in that: It comprises a power generation device, a power conversion device and an energy storage device as described in any one of claims 1 to 13, wherein the power conversion device is connected between the power generation device and the energy storage device, and the power generation device is used to store the generated electric energy into a battery of the energy storage device through the power conversion device.

15. A charging network, characterized in that: It comprises a charging pile and an energy storage device as claimed in any one of claims 1 to 13, wherein the charging pile is electrically connected to the energy storage device, and the energy storage device is used to provide electrical energy to the charging pile.

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