Energy storage device, photovoltaic storage system and charging network

Abstract

The present application provides an energy storage device, a photovoltaic storage system and a charging network, which relate to the field of energy technology. The energy storage device includes a thermal management module, a battery module, a power module and a radiator module. The thermal management module includes a shell and a valve body assembly, a first evaporator and a condenser arranged in the shell, and the shell 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. The battery module includes a first heat exchange plate, the power module includes a second heat exchange plate, and the radiator module includes a radiator. The first heat exchange plate, the second heat exchange plate and the radiator are connected to the valve body assembly through corresponding coolant interfaces. The energy storage device can achieve efficient regulation of battery temperature, thereby improving the operational reliability of the photovoltaic storage system and the charging network using the energy storage device.

Description

Technical Field

[0001] 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

[0002] 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.

[0003] 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. Summary of the Invention

[0004] The present application provides an energy storage device, a photovoltaic storage system, and a charging network that can achieve efficient regulation of battery temperature.

[0005] 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.

[0006] 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.

[0007] 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.

[0008] 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.

[0009] 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.

[0010] 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.

[0011] 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.

[0012] 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.

[0013] 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.

[0014] 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.

[0015] 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.

[0016] 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.

[0017] 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.

[0018] 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.

[0019] 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

[0020] Figure 1 A structural block diagram of the energy storage device provided in an embodiment of the present application;

[0021] Figure 2a A schematic structural diagram of an energy storage device provided in an embodiment of the present application;

[0022] Figure 2b Another schematic structural diagram of the energy storage device provided in an embodiment of the present application;

[0023] Figure 3 A schematic diagram of a specific structure of the energy storage device provided in an embodiment of the present application;

[0024] Figure 4 for Figure 3 A schematic diagram of an operating mode of the energy storage device shown;

[0025] Figure 5 for Figure 3 Another schematic diagram of an operating mode of the energy storage device shown;

[0026] Figure 6 for Figure 3 Another schematic diagram of an operating mode of the energy storage device shown;

[0027] Figure 7 for Figure 3 Another schematic diagram of an operating mode of the energy storage device shown;

[0028] Figure 8 for Figure 3 Another schematic diagram of an operating mode of the energy storage device shown;

[0029] Figure 9 Another specific structural diagram of the energy storage device provided in an embodiment of the present application;

[0030] Figure 10Another specific structural diagram of the energy storage device provided in an embodiment of the present application;

[0031] Figure 11 Another specific structural diagram of the energy storage device provided in an embodiment of the present application;

[0032] Figure 12 Another specific structural diagram of the energy storage device provided in an embodiment of the present application;

[0033] Figure 13 for Figure 12 A schematic diagram of an operating mode of the energy storage device shown;

[0034] Figure 14 for Figure 12 Another schematic diagram of an operating mode of the energy storage device shown;

[0035] Figure 15 for Figure 12 A schematic diagram of another operating mode of the energy storage device shown;

[0036] Figure 16 Another specific structural diagram of the energy storage device provided in an embodiment of the present application;

[0037] Figure 17 for Figure 16 A schematic diagram of an operating mode of the energy storage device shown;

[0038] Figure 18 for Figure 16 Another schematic diagram of an operating mode of the energy storage device shown;

[0039] Figure 19 for Figure 16 Another schematic diagram of an operating mode of the energy storage device shown;

[0040] Figure 20 for Figure 16 Another schematic diagram of an operating mode of the energy storage device shown;

[0041] Figure 21 for Figure 16 Another schematic diagram of an operating mode of the energy storage device shown;

[0042] Figure 22 Another specific structural diagram of the energy storage device provided in an embodiment of the present application;

[0043] Figure 23 Another specific structural diagram of the energy storage device provided in an embodiment of the present application;

[0044] Figure 24 Another specific structural diagram of the energy storage device provided in an embodiment of the present application;

[0045] Figure 25 Another specific structural diagram of the energy storage device provided in an embodiment of the present application;

[0046] Figure 26 Another specific structural diagram of the energy storage device provided in an embodiment of the present application;

[0047] Figure 27 Another specific structural diagram of the energy storage device provided in an embodiment of the present application;

[0048] Figure 28 Another specific structural diagram of the energy storage device provided in an embodiment of the present application;

[0049] Figure 29 Another specific structural diagram of the energy storage device provided in an embodiment of the present application;

[0050] Figure 30 for Figure 29 A schematic diagram of an operating mode of the energy storage device shown;

[0051] Figure 31 for Figure 29 Another schematic diagram of an operating mode of the energy storage device shown;

[0052] Figure 32 for Figure 29 Another schematic diagram of an operating mode of the energy storage device shown;

[0053] Figure 33a for Figure 29 Another schematic diagram of an operating mode of the energy storage device shown;

[0054] Figure 33b for Figure 29 Another schematic diagram of an operating mode of the energy storage device shown;

[0055] Figure 34 for Figure 29 Another schematic diagram of an operating mode of the energy storage device shown;

[0056] Figure 35 Another specific structural diagram of the energy storage device provided in an embodiment of the present application;

[0057] Figure 36 Another specific structural diagram of the energy storage device provided in an embodiment of the present application;

[0058] Figure 37 Another specific structural diagram of the energy storage device provided in an embodiment of the present application;

[0059] Figure 38Another specific structural diagram of the energy storage device provided in an embodiment of the present application;

[0060] Figure 39 for Figure 38 A schematic diagram of an operating mode of the energy storage device shown;

[0061] Figure 40 for Figure 38 Another schematic diagram of an operating mode of the energy storage device shown;

[0062] Figure 41 for Figure 38 Another schematic diagram of an operating mode of the energy storage device shown;

[0063] Figure 42a for Figure 38 Another schematic diagram of an operating mode of the energy storage device shown;

[0064] Figure 42b for Figure 38 Another schematic diagram of an operating mode of the energy storage device shown;

[0065] Figure 43 for Figure 38 Another schematic diagram of an operating mode of the energy storage device shown;

[0066] Figure 44 Another specific structural diagram of the energy storage device provided in an embodiment of the present application;

[0067] Figure 45 Another specific structural diagram of the energy storage device provided in an embodiment of the present application;

[0068] Figure 46 Another specific structural diagram of the energy storage device provided in an embodiment of the present application;

[0069] Figure 47 Another specific structural diagram of the energy storage device provided in an embodiment of the present application;

[0070] Figure 48 for Figure 47 A schematic diagram of an operating mode of the energy storage device shown;

[0071] Figure 49 for Figure 47 Another schematic diagram of an operating mode of the energy storage device shown;

[0072] Figure 50 for Figure 47 Another schematic diagram of an operating mode of the energy storage device shown;

[0073] Figure 51a for Figure 47Another schematic diagram of an operating mode of the energy storage device shown;

[0074] Figure 51b for Figure 47 Another schematic diagram of an operating mode of the energy storage device shown;

[0075] Figure 52 for Figure 47 Another schematic diagram of an operating mode of the energy storage device shown;

[0076] Figure 53 Another specific structural diagram of the energy storage device provided in an embodiment of the present application;

[0077] Figure 54 Another specific structural diagram of the energy storage device provided in an embodiment of the present application;

[0078] Figure 55 Another specific structural diagram of the energy storage device provided in an embodiment of the present application;

[0079] Figure 56 Another specific structural diagram of the energy storage device provided in an embodiment of the present application;

[0080] Figure 57 Another specific structural diagram of the energy storage device provided in an embodiment of the present application;

[0081] Figure 58 Another specific structural diagram of the energy storage device provided in an embodiment of the present application;

[0082] Figure 59 Another specific structural diagram of the energy storage device provided in an embodiment of the present application;

[0083] Figure 60 A schematic diagram of the structure of the optical storage system provided in an embodiment of the present application;

[0084] Figure 61 A schematic diagram of the structure of the charging network provided in an embodiment of the present application. DETAILED DESCRIPTION

[0085] 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.

[0086] 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.

[0087] 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.

[0088] At present, according to the different power consumption requirements of application scenarios, energy storage equipment can be divided into module-level energy storage equipment, cabinet-level energy storage equipment and container-level energy storage equipment. Figure 1 , Figure 1 This is a block diagram of the structure of an energy storage device 100 provided in an embodiment of the present application. The energy storage device 100 may include a housing 10 and a battery module 2 disposed therein. The batteries in the battery module 2 are the basic units that enable the energy storage device to store and release electrical energy. During the battery charging and discharging process, a significant amount of heat is generated. To ensure battery charging and discharging performance and safety, the batteries typically need to be cooled.

[0089] 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.

[0090] 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.

[0091] Reference Figure 2a , Figure 2aA schematic structural diagram 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 housing 101 and a valve body assembly 102, a first evaporator 103, and a condenser 105 disposed in the housing 101. The housing 101 includes a plurality of coolant interfaces 1011. The coolant interfaces 1011 can be used to connect to a coolant pipe. The coolant pipe refers to a pipe for circulating a coolant, wherein the coolant can be, but is not limited to, water or ethylene glycol.

[0092] 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.

[0093] 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.

[0094] 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.

[0095] 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.

[0096] 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.

[0097] The second heat exchange plate 302 is in thermal contact with the power circuit 301, so that the cooling liquid can be circulated in the second heat exchange plate 302 to dissipate heat from the power circuit 301. When the second heat exchange plate 302 is connected to the thermal management module 1, the second heat exchange plate 302 is connected to the valve body assembly 102 via two cooling liquid interfaces 1011. Specifically, the liquid inlet and liquid outlet of the second heat exchange plate 302 are connected to the valve body assembly 102 via a cooling liquid interface 1011 respectively, and the valve body assembly 102 can be used to connect or disconnect the cooling liquid passage between the second heat exchange plate 302 and other structures. It is worth mentioning that in Figure 2a In the energy storage device 100 shown, 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, thereby improving the flexibility of the setting positions of the first heat exchange plate 202 and the second heat exchange plate 302.

[0098] 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.

[0099] The radiator module 4 includes a radiator 401, which is also connected to the valve body assembly 102 through two coolant interfaces 1011. In specific implementation, the liquid inlet and outlet of the radiator 401 are connected to the valve body assembly 102 through a coolant interface 1011 respectively, and the valve body assembly 102 can be used to connect or disconnect the coolant passage between the radiator 401 and other structures. It is worth mentioning that in Figure 2a In the energy storage device 100 shown, 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, so as to improve the flexibility of the setting position of the radiator 401, the first heat exchange plate 202 and the second heat exchange plate 302.

[0100] 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.

[0101] 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 .

[0102] exist Figure 2a In the illustrated energy storage device 100, the thermal management module 1 further includes a first throttle valve 104, which is 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 can be, but are not limited to, Freon or liquid ammonia compounds.

[0103] exist Figure 2a In the energy storage device 100 shown, 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 a refrigerant pipeline to form a refrigerant circulation loop.

[0104] In addition, please refer to Figure 2b , Figure 2b This is another schematic diagram of the structure of the energy storage device 100 provided in this application. Figure 2b In the embodiment, the compressor 5 can be housed in the shell 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. Figure 2b Other structures of the energy storage device 100 shown can refer to the above Figure 2a The energy storage device 100 shown is configured and will not be described in detail here.

[0105] 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.

[0106] 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.

[0107] 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.

[0108] First, refer to Figure 3 , Figure 3 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, each of which includes four valve ports. For ease of distinction, the two four-way valves can be respectively referred to 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 each 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.

[0109] In addition, in this application Figure 3In the provided embodiment, the thermal management module 1 further includes two water pumps, namely a water pump 106a and a water pump 106b, which can be disposed within the housing 101. The water pump 106a is connected between the first heat exchange plate 202 and the four-way valve 1021a and is used 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. The water pump 106b is disposed at one end of the radiator 401 and is used 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 the water pumps 106a and 106b can be flexibly arranged, as long as the water pump 106a can accelerate the flow of coolant through the first heat exchange plate 202, and the 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.

[0110] like Figure 3 As shown, 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 to the passage connected to the first heat exchange plate 202, and the location of the electric heater 107 can be varied. For example, Figure 3 As shown, the electric heater 107 can be connected in series between the four-way valve 1021a and the passage connected to the first heat exchange plate 202. In other possible embodiments, the electric heater 107 can also be set at other positions as long as the electric heater 107 can communicate with the first heat exchange plate 202.

[0111] 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.

[0112] In practical applications, the energy storage device 100 provided by 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 the corresponding operating mode. Figure 3 Several operating modes of the energy storage device 100 provided in are illustrated as examples.

[0113] Reference Figure 4 , Figure 4 The operating mode of the energy storage device 100 is shown when the ambient temperature is high (such as in the summer). Figure 4 Three circulation loops are shown in FIG. , and the three circulation loops are introduced below respectively.

[0114] 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.

[0115] 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.

[0116] 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.

[0117] It should be noted that in the above Figure 4 In the illustrated operating mode, the electric heater 107 is in an off state.

[0118] In addition, refer to Figure 5 , Figure 5 The operation mode of the energy storage device 100 is shown when the ambient temperature is relatively suitable (such as in spring or autumn).

[0119] 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.

[0120] It is worth mentioning that in the above Figure 5 In the illustrated operating mode, 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.

[0121] Reference Figure 6 , Figure 6 The operating mode of the energy storage device 100 is shown when the ambient temperature is low (such as low temperatures in winter).

[0122] During the operation of the energy storage device 100, the power circuit 301 always generates a lot of heat. In winter, in order to ensure the charging and discharging performance of the battery 201 under low temperature conditions, 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, Figure 6 As shown, four-way valves 1021a and 1021b connect the passage between the first heat exchange plate 202 and the second heat exchange plate 302, thereby connecting the first heat exchange plate 202, water pump 106a, second heat exchange plate 302, condenser 105, and electric heater 107 in sequence through the coolant channel to form a circulation loop. As the coolant circulates through this circulation loop, 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.

[0123] exist Figure 6 In the operating mode shown, the compressor 5, the first evaporator 103 and the condenser 105 are all in the closed state. Figure 7As shown, 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 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, so that the condenser 105 provides heat energy to the first heat exchange plate 202.

[0124] Another example Figure 8 As shown, Figure 8 The figure 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. 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 connected in sequence through the coolant pipeline to form a circulation loop. The electric heater 107 heats the coolant circulating in this circulation loop, thereby heating the battery 201.

[0125] It is worth mentioning that in Figure 8 In the illustrated operating mode, the compressor 5 , the first evaporator 103 and the condenser 105 are all in the closed state.

[0126] When the energy storage device 100 is operated under low ambient temperature conditions, in addition to heating the battery by the electric heater 107, other possible methods can also be used. Figure 9 , Figure 9 Another specific structural diagram of the energy storage device 100 provided in the embodiment of the present application. Figure 3 Compared to the energy storage device 100 shown in Figure 9 The energy storage device 100 in the embodiment 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 conducive to improving the energy efficiency of the energy storage device 100.

[0127] Figure 9 Other possible operating modes of the energy storage device 100 provided can refer to the above Figures 4 to 8 As shown, it will not be described in detail here.

[0128] Since 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 the water vapor. Water vapor that exists in the energy storage device 100 for a long time will corrode the battery 201 and related electronic devices, and 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 set in the energy storage device 100. For specific implementation, please refer to Figure 10 , Figure 10 This is another specific structural diagram of the energy storage device 100 provided in the embodiment of the present application. Figure 10 As shown, the thermal management module 1 further includes a dehumidification module 109, which may be located within the housing 101. In other possible embodiments, the dehumidification module 109 may also be located outside the housing 101. In addition, the dehumidification module 109 includes a second evaporator 1091 and a second throttle valve 1092, which are connected via a refrigerant pipeline.

[0129] You can continue to refer to Figure 10 In this 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.

[0130] Since the temperature of the second evaporator 1091 is relatively low, it can also reduce the temperature of the air in the energy storage device 100, which is beneficial for keeping the battery 201 in a relatively low temperature environment. In addition, the dehumidification module 109 can also include a fan ( Figure 10 As shown in the figure, the fan can be arranged near the second evaporator 1091 to accelerate the circulation speed of the air flowing through the second evaporator 1091, thereby reducing the temperature of the second evaporator 1091, which is beneficial to improving the dehumidification effect of the dehumidification module 109.

[0131] exist Figure 10In the provided energy storage device 100, 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.

[0132] It is understandable that in Figure 10 In the embodiment provided, 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.

[0133] In summary, in this application Figure 10In the energy storage device 100 provided, 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, which is conducive to reducing the volume and cost of the thermal management module 1 and facilitating the realization of 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.

[0134] Figure 10 Other possible operating modes of the energy storage device 100 provided can refer to the above Figures 4 to 9 As shown, it will not be described in detail here.

[0135] It is worth mentioning that in the embodiment of the present application, the setting of the dehumidification module 109 does not depend on the bypass of the compressor 5, that is, the dehumidification module 109 and the bypass valve 108 at the compressor 5 can be set at different times. Figure 11 ,exist Figure 11 In the energy storage device 100 shown, the bypass valve 108 is not provided at the compressor 5, and the thermal management module 1 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. Figure 11 The operation mode of the energy storage device 100 shown in FIG. Figures 4 to 10 As shown, it will not be described in detail here.

[0136] 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 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. Figure 12 As shown, Figure 12This is another schematic diagram of the structure of the energy storage device provided by an embodiment of the present application. The first heat exchange plate 202 and the second heat exchange plate 302, connected in series, form a combination that is connected to two coolant ports 1011. This facilitates cooling of the coolant flowing through the second heat exchange plate 302, thereby facilitating cooling of the power circuit 301 and improving the operational reliability of the power circuit 301. Furthermore, it facilitates synchronous temperature control of the power circuit 301 and the battery 201, simplifying the coolant circulation loop of the energy storage device 100. Figure 12 Other structures of the energy storage device 100 shown can refer to the above Figure 3 Make the settings, which will not be described in detail here.

[0137] In addition, Figure 12 Based on the energy storage device 100 shown, a bypass valve 108 or a dehumidification module 109 can also be provided for the compressor 5 according to the needs of actual applications. Figure 13 As shown, Figure 12 Compared to the energy storage devices shown, Figure 13 The energy storage device 100 shown further comprises a bypass valve 108 , which is arranged in parallel with the compressor 5 .

[0138] Another example Figure 14 As shown, Figure 12 Compared to the energy storage devices shown, Figure 14 The thermal management module 1 of the energy storage device 100 shown 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.

[0139] Another example Figure 15 As shown, Figure 14 Compared to the energy storage devices shown, Figure 15 The energy storage device 100 shown further includes a bypass valve 108 , and the thermal management module 1 further includes a dehumidification module 109 . The bypass valve 108 and the dehumidification module 109 can be configured with reference to any of the above embodiments, and are not described in detail herein.

[0140] 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 by the two four-way valves mentioned above, and can also be realized by other possible methods. Figure 16 , Figure 16 This is another schematic diagram of the specific structure 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 of the thermal management module 1 includes an eight-way valve 1022, which 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.

[0141] 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 Figure 16 The energy storage device 100 shown is capable of operating in corresponding operating modes.

[0142] For example, when the ambient temperature is high (such as in summer with high temperature and high humidity), you can refer to Figure 17 , Figure 17 for Figure 16 The schematic diagram of the circulation loop of the energy storage device 100 in this operating mode is shown. Figure 17 Three loops in this working mode are shown:

[0143] 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.

[0144] 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.

[0145] 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.

[0146] It should be noted that in the above Figure 17 In the illustrated operating mode, the electric heater 107 is in an off state.

[0147] 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.

[0148] In addition, refer to Figure 18 , Figure 18 The operation mode of the energy storage device 100 is shown when the ambient temperature is relatively suitable (such as in spring or autumn).

[0149] Specifically, in Figure 18 Figure 1 shows 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.

[0150] It is worth mentioning that in the above Figure 18 In the illustrated operating mode, 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.

[0151] Reference Figure 19 , Figure 19 The operating mode of the energy storage device is demonstrated when the ambient temperature is low (such as low temperatures in winter).

[0152] exist Figure 19 In this example, 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.

[0153] It should be noted that, in actual application, the first throttle valve 104 and the compressor 5 can be set to the open state as needed, such as Figure 20 As shown, the heat pump principle allows the condenser 105 to maintain a higher temperature, thereby providing heat energy to the first heat exchange plate 202. Furthermore, the electric heater 107 can be activated as needed to raise the temperature of the first heat exchange plate 202. It is understood that when the energy storage device 100 is deployed in a relatively low-temperature area, the electric heater 107 can be installed as needed. However, when the energy storage device 100 is deployed in a relatively high-temperature area, the electric heater 107 can be omitted, thereby reducing deployment costs.

[0154] Another example Figure 21 As shown, Figure 21 The figure 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 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, water pump 106a, condenser 105, second heat exchange plate 302, and electric heater 107 are connected in sequence through the coolant pipe to form a circulation loop. The electric heater 107 heats the coolant circulating in the circulation loop 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.

[0155] It is worth mentioning that in Figure 21 In the illustrated operating mode, the compressor 5, first evaporator 103, and 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 connects the first heat exchange plate 202, water pump 106a, condenser 105, second heat exchange plate 302, and electric heater 107 sequentially 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.

[0156] When the energy storage device 100 is operated under low ambient temperature conditions, in addition to heating the battery by the electric heater 107, other possible methods may also be used. Figure 22 , Figure 22 Another specific structural diagram of the energy storage device 100 provided in the embodiment of the present application. Figure 16 Compared to the energy storage device 100 shown in Figure 22The energy storage device 100 in the embodiment of the present invention adds a bypass valve 108 to the compressor 5. The bypass valve 108 is arranged in parallel with the compressor 5. The bypass valve 108 can be, for example, a solenoid valve. Thus, when the compressor 5 is operating in a heating state, the bypass valve 108 opens to reduce the pressure of the compressor 5, thereby allowing the heat generated by the compressor 5 itself to heat the battery 201. When the compressor is operating in a cooling state, the bypass valve 108 closes. It is 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 helps to improve the energy efficiency of the energy storage device 100.

[0157] Figure 22 Other possible operating modes of the energy storage device 100 provided can refer to the above Figures 17 to 21 As shown, it will not be described in detail here.

[0158] In addition, Figure 22 A dehumidification module 109 can also be added to the energy storage device 100 shown. Figure 23 , Figure 23 This is another specific structural diagram of the energy storage device 100 provided in the embodiment of the present application. Figure 23 As shown, the thermal management module 1 further includes a dehumidification module 109, which can be configured with reference to the dehumidification module 109 in any of the above embodiments, and will not be described in detail here. Figure 23 In the illustrated 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, 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.

[0159] 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.

[0160] exist Figure 23In the provided energy storage device 100, 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.

[0161] It is understandable that in Figure 23 In the embodiment provided, 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.

[0162] In summary, in this application Figure 23In the energy storage device 100 provided, 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 parts used, help reduce the volume and cost of the adjustment device, and facilitate the realization of 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 parts used can be reduced, which is conducive to reducing production costs.

[0163] Figure 23 Other possible operating modes of the energy storage device 100 provided can refer to the above Figures 17 to 22 As shown, it will not be described in detail here.

[0164] It is worth mentioning that in the embodiment of the present application, the setting of the dehumidification module 109 does not depend on the bypass of the compressor 5, that is, the dehumidification module 109 and the bypass valve 108 at the compressor 5 can be set at different times. Figure 24 ,exist Figure 24 In the energy storage device 100 shown, 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. Figure 24 The various operating modes of the energy storage device 100 shown in FIG. Figures 17 to 23 As shown, it will not be described in detail here.

[0165] 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, such as Figure 25 As shown, Figure 25 This is another schematic diagram of the structure of the energy storage device provided by an embodiment of the present application. The first heat exchange plate 202 and the second heat exchange plate 302, connected in series, form a combination that is connected to two coolant ports 1011. This facilitates cooling of the coolant flowing through the second heat exchange plate 302, thereby facilitating cooling of the power circuit 301 and improving the operational reliability of the power circuit 301. Furthermore, this facilitates synchronous temperature control of the power circuit 301 and the battery 201, simplifying the coolant circulation loop of the energy storage device 100. Figure 25 Other structures of the energy storage device 100 shown can refer to the above Figure 16 Make the settings, which will not be described in detail here.

[0166] In addition, Figure 25 Based on the energy storage device 100 shown, a bypass valve 108 or a dehumidification module 109 can also be provided for the compressor 5 according to the needs of actual applications. Figure 26 As shown, Figure 25 Compared to the energy storage device 100 shown, Figure 26 The energy storage device 100 shown further comprises a bypass valve 108 , which is arranged in parallel with the compressor 5 .

[0167] Another example Figure 27 As shown, Figure 25 Compared to the energy storage devices shown, Figure 27 The thermal management module 1 of the energy storage device 100 shown 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.

[0168] Another example Figure 28 As shown, Figure 27 Compared to the energy storage devices shown, Figure 28 The energy storage device 100 shown further includes a bypass valve 108 , and the thermal management module 1 further includes a dehumidification module 109 . The bypass valve 108 and the dehumidification module 109 can be configured with reference to any of the above embodiments, and are not described in detail herein.

[0169] 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, refer to Figure 29 , Figure 29Another 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. In the embodiment of the present application, for the convenience of distinction, the two five-way valves can be respectively recorded as five-way valve 1023a and five-way valve 1023b, 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 interface 1011, and the other valve ports of the two five-way valves are respectively connected to a coolant interface 1011. Then the five-way valve 1023a and the five-way valve 1023b can be used to connect or disconnect the passage between the first heat exchange plate 202, the second heat exchange plate 302, the radiator 401, the condenser 105 and the first evaporator 103.

[0170] Figure 29 In practical applications, the energy storage device 100 provided can connect or disconnect different coolant interfaces through two five-way valves so that the energy storage device 100 can work in the corresponding operating mode. Figure 29 Several operating modes of the energy storage device 100 provided in are illustrated as examples.

[0171] First, refer to Figure 30 , Figure 30 The operating mode of the energy storage device 100 is shown when the ambient temperature is high (such as high temperature in summer).

[0172] Among them, Figure 30 Four circulation loops are shown:

[0173] 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.

[0174] 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.

[0175] 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.

[0176] 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.

[0177] It should be noted that in the above Figure 30 In the illustrated operating mode, the electric heater 107 is in an off state.

[0178] In addition, refer to Figure 31 , Figure 31 The operation mode of the energy storage device 100 is shown when the ambient temperature is relatively suitable (such as in spring or autumn).

[0179] 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.

[0180] It is worth mentioning that in the above Figure 31 In the illustrated operating mode, the electric heater 107 is in the off state. Furthermore, since the heat dissipation requirements of the battery and the power circuit 301 can be met solely by the radiator 401 when the ambient temperature is relatively suitable, in this operating mode, the compressor 5, the first evaporator 103, and the condenser 105 are all in the off state.

[0181] Reference Figure 32 , Figure 32 The operating mode of the energy storage device 100 is shown when the ambient temperature is low (such as low temperatures in winter).

[0182] During the operation of the energy storage device 100, the power circuit 301 always generates a lot of heat. In winter, 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 for heating the battery. In specific implementation, Figure 32 As shown, five-way valves 1023a and 1023b connect the coolant passage between the first heat exchange plate 202 and the second heat exchange plate 302, thereby connecting the first heat exchange plate 202, the water pump 106a, the second heat exchange plate 302, and the electric heater 107 in sequence through the coolant passage to form a circulation loop. As the coolant circulates through this circulation loop, 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.

[0183] exist Figure 32 In the operating mode shown, the compressor 5, the first evaporator 103 and the condenser 105 are all in the closed state. Figure 33a and Figure 33b As shown, 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 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, so that the condenser 105 provides heat energy to the first heat exchange plate 202.

[0184] Another example Figure 34 As shown, Figure 34 The figure 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. 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 connected in sequence through the coolant pipeline to form a circulation loop. The electric heater 107 heats the coolant circulating in this circulation loop, thereby heating the battery 201.

[0185] It is worth mentioning that in Figure 34 In the illustrated operating mode, the compressor 5 , the first evaporator 103 and the condenser 105 are all in the closed state.

[0186] When the energy storage device 100 is operated under low ambient temperature conditions, in addition to heating the battery by the electric heater 107, other possible methods may also be used. Figure 35 , Figure 35 Another specific structural diagram of the energy storage device 100 provided in the embodiment of the present application. Figure 29 Compared to the energy storage device 100 shown in Figure 35 The energy storage device 100 in the embodiment of the present invention adds a bypass valve 108 to the compressor 5. The bypass valve 108 is arranged in parallel with the compressor 5. The bypass valve 108 can be, for example, a solenoid valve. Thus, when the compressor 5 is operating in a heating state, the bypass valve 108 opens to reduce the pressure of the compressor 5, thereby allowing the heat generated by the compressor 5 itself to heat the battery 201. When the compressor is operating in a cooling state, the bypass valve 108 closes. It is 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 helps to improve the energy efficiency of the energy storage device 100.

[0187] Figure 35 Other possible operating modes of the energy storage device 100 provided can refer to the above Figures 30 to 34 As shown, it will not be described in detail here.

[0188] Reference Figure 36 , Figure 36 Another specific structural diagram of the energy storage device 100 provided in the embodiment of the present application. Figure 35 Compared to the energy storage device 100 shown in Figure 36 In the energy storage device 100 shown, the thermal management module 1 is further provided with a dehumidification module 109. The dehumidification module 109 can be provided with reference to the dehumidification module 109 in any of the above embodiments, and will not be described in detail here. Figure 36 In the illustrated 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, 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.

[0189] 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.

[0190] exist Figure 36 In the provided energy storage device 100, 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 also 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.

[0191] It is understandable that in Figure 36 In the embodiment provided, 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.

[0192] In summary, in this application Figure 36 In the energy storage device 100 provided, 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 parts used, help reduce the volume and cost of the adjustment device, and facilitate the realization of 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 parts used can be reduced, which is conducive to reducing production costs.

[0193] Figure 36 Other possible operating modes of the energy storage device 100 provided can refer to the above Figures 30 to 35 As shown, it will not be described in detail here.

[0194] It is worth mentioning that in the embodiment of the present application, the setting of the dehumidification module 109 does not depend on the bypass of the compressor 5, that is, the dehumidification module 109 and the bypass valve 108 at the compressor 5 can be set at different times. Figure 37 ,exist Figure 37 In the energy storage device 100 shown, 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. Figure 37 The operation mode of the energy storage device 100 shown in FIG. Figures 30 to 36 As shown, it will not be described in detail here.

[0195] Reference Figure 38 , Figure 38 This is another specific structural 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 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 by the valve body assembly 102 according to actual needs, so that Figure 34 The energy storage device 100 shown is capable of operating in corresponding operating modes.

[0196] For example, when the ambient temperature is high (such as in summer with high temperature and high humidity), you can refer to Figure 39 , Figure 39 for Figure 38 The schematic diagram of the circulation loop of the energy storage device 100 in this operating mode is shown. Figure 39 Four circulation loops in this working mode are shown:

[0197] 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.

[0198] 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.

[0199] 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.

[0200] 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.

[0201] It should be noted that in the above Figure 39 In the illustrated operating mode, the electric heater 107 is in an off state.

[0202] 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.

[0203] In addition, refer to Figure 40 , Figure 40 The operation mode of the energy storage device 100 is shown when the ambient temperature is relatively suitable (such as in spring or autumn).

[0204] 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.

[0205] It is worth mentioning that in the above Figure 40 In the illustrated operating mode, the electric heater 107 is in the off state. Furthermore, since the heat dissipation requirements of the battery and the power circuit 301 can be met solely by the radiator 401 when the ambient temperature is relatively suitable, in this operating mode, the compressor 5, the first evaporator 103, and the condenser 105 are all in the off state.

[0206] Reference Figure 41 , Figure 41 The operating mode of the energy storage device is demonstrated when the ambient temperature is low (such as low temperatures in winter).

[0207] During the operation of the energy storage device, the power circuit 301 always generates a lot of heat. In winter, in order to ensure the charging and discharging performance of the battery 201, it is necessary to heat the battery 201. 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, Figure 41 As shown, the ten-way valve 1024 connects the coolant passage between the first heat exchange plate 202 and the second heat exchange plate 302, thereby connecting the first heat exchange plate 202, the electric heater 107, the water pump 106, and the second heat exchange plate 302 in sequence through the coolant passage to form a circulation loop. As the coolant circulates through 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 detailed here.

[0208] exist Figure 41 In the operating mode shown, the compressor 5, the first evaporator 103 and the condenser 105 are all in the closed state. Figure 42aAs shown, the first throttle valve 104 and the compressor 5 can also be set to the open state as needed, that is, the condenser 105 is made to have a higher temperature through the working principle of the heat pump, so as to heat the first heat exchange plate 202 through the condenser 105. In specific implementation, Figure 42a Three loops are shown:

[0209] 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.

[0210] 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.

[0211] 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.

[0212] 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. Figure 42b ,exist Figure 42b In the embodiment, the first heat exchange plate 202, the electric heater 107, the water pump 106a, and the condenser 105 are sequentially connected through the coolant channel. As the coolant circulates through this loop, the heat generated by the condenser 105 is transferred to the first heat exchange plate 202, thereby heating the battery.

[0213] Another example Figure 43 As shown, Figure 43The figure 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 pipeline to form a circulation loop. The electric heater 107 and the second heat exchange plate 302 heat the coolant circulating in the circulation loop, thereby heating the battery 201.

[0214] It is worth mentioning that in Figure 43 In the illustrated operating mode, the compressor 5 , the first evaporator 103 and the condenser 105 are all in the closed state.

[0215] When the energy storage device 100 is operated under low ambient temperature conditions, in addition to heating the battery by the electric heater 107, other possible methods can also be used. Figure 44 , Figure 44 Another specific structural diagram of the energy storage device 100 provided in the embodiment of the present application. Figure 38 Compared to the energy storage device 100 shown in Figure 44 The energy storage device 100 in the embodiment of the present invention adds a bypass valve 108 to the compressor 5. The bypass valve 108 is arranged in parallel with the compressor 5. The bypass valve 108 can be, for example, a solenoid valve. Thus, when the compressor 5 is operating in a heating state, the bypass valve 108 opens to reduce the pressure of the compressor 5, thereby allowing the heat generated by the compressor 5 itself to heat the battery 201. When the compressor is operating in a cooling state, the bypass valve 108 closes. It is 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 helps to improve the energy efficiency of the energy storage device 100.

[0216] Figure 44 Other possible operating modes of the energy storage device 100 provided can refer to the above Figures 39 to 43 As shown, it will not be described in detail here.

[0217] Reference Figure 45 , Figure 45 Another specific structural diagram of the energy storage device 100 provided in the embodiment of the present application. Figure 44 Compared to the energy storage device 100 shown in Figure 45 In the energy storage device 100 shown, 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.

[0218] exist Figure 45 In the illustrated 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, 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.

[0219] 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.

[0220] exist Figure 45 In the provided energy storage device 100, 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 also 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.

[0221] It is understandable that in Figure 45In the embodiment provided, 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, 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.

[0222] In summary, in this application Figure 45 In the energy storage device 100 provided, 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 parts used, help reduce the volume and cost of the adjustment device, and facilitate the realization of 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 parts used can be reduced, which is conducive to reducing production costs.

[0223] Figure 45 Other possible operating modes of the energy storage device 100 provided can refer to the above Figures 39 to 44 As shown, it will not be described in detail here.

[0224] It is worth mentioning that in the embodiment of the present application, the setting of the dehumidification module 109 does not depend on the bypass of the compressor 5, that is, the dehumidification module 109 and the bypass valve 108 at the compressor 5 can be set at different times. Figure 46 ,exist Figure 46 In the energy storage device 100 shown, 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. Figure 46 The operation mode of the energy storage device 100 shown in FIG. Figures 39 to 45 As shown, it will not be described in detail here.

[0225] In the embodiment of the present application, the valve body assembly may also have more than ten valve ports, so as to reserve valve ports for connecting to other possible pipelines, which is beneficial to improving the scalability of the energy storage device 100. Figure 47 , Figure 47 This is another specific structural 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, which 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 by the valve body assembly 102 according to actual needs, so that Figure 47 The energy storage device 100 shown is capable of operating in corresponding operating modes.

[0226] in addition, Figure 47 The radiator module 4 of the energy storage device 100 shown in FIG includes two radiators, each of which can be connected between two coolant interfaces. For the sake of easy distinction, the two radiators can be respectively recorded as radiator 401 a and radiator 401 b.

[0227] Next, Figure 47 Several operating modes of the energy storage device 100 are shown for illustration purposes only.

[0228] When the ambient temperature is high (such as high temperature and high humidity in summer), you can refer to Figure 48 , Figure 48 for Figure 47 The schematic diagram of the circulation loop of the energy storage device 100 in this operating mode is shown. Figure 48 Four circulation loops in this working mode are shown:

[0229] 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.

[0230] 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.

[0231] In the third circulation loop, the twelve-way valve 1025 connects the coolant passage between the second heat exchange plate 302 and the radiator 401a. It can be understood that in order to allow the coolant to flow between the second heat exchange plate 302 and the radiator 401a, as shown in FIG. Figure 48 As shown, a water pump 106c can be installed in the passage connecting the two, so that the second heat exchange plate 302, the radiator 401a, and the water pump 106c are sequentially connected through the coolant channel. 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.

[0232] 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.

[0233] It should be noted that in the above Figure 48 In the illustrated operating mode, the electric heater 107 is in an off state.

[0234] 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.

[0235] In addition, refer to Figure 49 , Figure 49 The operation mode of the energy storage device 100 is shown when the ambient temperature is relatively suitable (such as in spring or autumn).

[0236] 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.

[0237] 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.

[0238] It is worth mentioning that in the above Figure 49 In the illustrated operating mode, 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.

[0239] Reference Figure 50 , Figure 50 The operating mode of the energy storage device is demonstrated when the ambient temperature is low (such as low temperatures in winter).

[0240] During the operation of the energy storage device 100, the power circuit 301 always generates a lot of heat. In winter, in order to ensure the charging and discharging performance of the battery 201 under low temperature conditions, 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, Figure 50As shown, the twelve-way valve 1025 connects the coolant passage between the first heat exchange plate 202 and the second heat exchange plate 302, thereby connecting the first heat exchange plate 202, the electric heater 107, the water pump 106c, and the second heat exchange plate 302 in sequence through the coolant passage to form a circulation loop. As the coolant circulates through 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.

[0241] exist Figure 50 In the operating mode shown, the compressor 5, the first evaporator 103 and the condenser 105 are all in the closed state. Figure 51a As shown, the first throttle valve 104 and the compressor 5 can also be set to the open state as needed, that is, the condenser 105 is made to have a higher temperature through the working principle of the heat pump, so as to heat the first heat exchange plate 202 through the condenser 105. In specific implementation, Figure 51a Four loops are shown:

[0242] 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.

[0243] 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.

[0244] 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.

[0245] 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.

[0246] 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. Figure 51b ,exist Figure 51b In the embodiment, the first heat exchange plate 202, the electric heater 107, the water pump 106a, and the condenser 105 are sequentially connected through the coolant channel. As the coolant circulates through this loop, the heat generated by the condenser 105 is transferred to the first heat exchange plate 202, thereby heating the battery.

[0247] Another example Figure 52 As shown, Figure 52 The figure 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, thereby heating the battery 201.

[0248] It is worth mentioning that in Figure 52 In the illustrated operating mode, the compressor 5 , the first evaporator 103 and the condenser 105 are all in the closed state.

[0249] When the energy storage device 100 is operated under low ambient temperature conditions, in addition to heating the battery by the electric heater 107, other possible methods may also be used. Figure 53 , Figure 53 Another specific structural diagram of the energy storage device 100 provided in the embodiment of the present application. Figure 47 Compared to the energy storage device 100 shown in Figure 53The energy storage device 100 in the embodiment of the present invention adds a bypass valve 108 to the compressor 5. The bypass valve 108 is arranged in parallel with the compressor 5. The bypass valve 108 can be, for example, a solenoid valve. Thus, when the compressor 5 is operating in a heating state, the bypass valve 108 opens to reduce the pressure of the compressor 5, thereby allowing the heat generated by the compressor 5 itself to heat the battery 201. When the compressor is operating in a cooling state, the bypass valve 108 closes. It is 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 helps to improve the energy efficiency of the energy storage device 100.

[0250] Figure 53 Other possible operating modes of the energy storage device 100 provided can refer to the above Figures 48 to 52 As shown, it will not be described in detail here.

[0251] Reference Figure 54 , Figure 54 Another specific structural diagram of the energy storage device 100 provided in the embodiment of the present application. Figure 53 Compared to the energy storage device 100 shown in Figure 55 In the energy storage device 100 shown, 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.

[0252] exist Figure 54 In the illustrated 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, 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.

[0253] 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.

[0254] exist Figure 54In the provided energy storage device 100, 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 also 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.

[0255] It is understandable that in Figure 54 In the embodiment provided, 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, 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.

[0256] In summary, in this application Figure 54In the energy storage device 100 provided, 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 parts used, help reduce the volume and cost of the adjustment device, and facilitate the realization of 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 parts used can be reduced, which is conducive to reducing production costs.

[0257] Figure 54 Other possible operating modes of the energy storage device 100 provided can refer to the above Figures 48 to 53 As shown, it will not be described in detail here.

[0258] It is worth mentioning that in the embodiment of the present application, the setting of the dehumidification module 109 does not depend on the bypass of the compressor 5, that is, the dehumidification module 109 and the bypass valve 108 at the compressor 5 can be set at different times. Figure 55 ,exist Figure 55 In the energy storage device 100 shown, 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. Figure 55 The operation mode of the energy storage device 100 shown in FIG. Figures 48 to 54 As shown, it will not be described in detail here.

[0259] It can be understood from the above description of the arrangement of the valve body assembly of the thermal management module 1 that in the embodiment of the present application, the twelve-way valve 1025 can also be replaced by two six-way valves. Figure 56 , Figure 56Another specific structural schematic diagram of the energy storage device 100 provided in an 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 passage 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.

[0260] In practical applications, the connectivity states of different coolant interfaces can be effectively adjusted by the six-way valve 1026a and the six-way valve 1026b according to actual needs, so that Figure 56 The energy storage device 100 shown is capable of operating in corresponding operating modes. Figure 56 The implementation of each operating mode of the energy storage device 100 shown can refer to Figures 48 to 53 As shown, it will not be described in detail here.

[0261] Reference Figure 57 , Figure 57 Another specific structural diagram of the energy storage device 100 provided in the embodiment of the present application. Figure 56 Compared to the energy storage device 100 shown in Figure 57 The energy storage device 100 in the embodiment of the present invention adds a bypass valve 108 to the compressor 5. The bypass valve 108 is arranged in parallel with the compressor 5. The bypass valve 108 can be, for example, a solenoid valve. Thus, when the compressor 5 is operating in a heating state, the bypass valve 108 opens to reduce the pressure of the compressor 5, thereby allowing the heat generated by the compressor 5 itself to heat the battery 201. When the compressor is operating in a cooling state, the bypass valve 108 closes. It is 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 helps to improve the energy efficiency of the energy storage device 100.

[0262] In addition, refer to Figure 58 , Figure 58 Another specific structural diagram of the energy storage device 100 provided in the embodiment of the present application. Figure 57 Compared to the energy storage device 100 shown in Figure 58 In the energy storage device 100 shown, 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.

[0263] exist Figure 58 In the illustrated 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, 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.

[0264] 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.

[0265] exist Figure 58 In the provided energy storage device 100, 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 also 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.

[0266] It is understandable that in Figure 58In the embodiment provided, 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, 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.

[0267] In summary, in this application Figure 58 In the energy storage device 100 provided, 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 parts used, help reduce the volume and cost of the adjustment device, and facilitate the realization of 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 parts used can be reduced, which is conducive to reducing production costs.

[0268] Figure 58 Other possible operating modes of the energy storage device 100 provided can refer to the above 48 to Figure 53 As shown, it will not be described in detail here.

[0269] It is worth mentioning that in the embodiment of the present application, the setting of the dehumidification module 109 does not depend on the bypass of the compressor 5, that is, the dehumidification module 109 and the bypass valve 108 at the compressor 5 can be set at different times. Figure 59 ,exist Figure 59 In the energy storage device 100 shown, 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.

[0270] 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.

[0271] 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.

[0272] The energy storage device provided in the above embodiments of the present application can be applied to various energy storage scenarios, such as Figure 60 As shown, Figure 60 A schematic diagram of the structure of a photovoltaic storage system provided in an embodiment of the present application. The photovoltaic storage system may include a power conversion device 200, a power generation device 300, and the aforementioned energy storage device 100. 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 electrical energy through the power conversion device 200 in the battery of the energy storage device 100. 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.

[0273] In addition, the energy storage device 100 provided in the embodiment of the present application can also be applied to a charging network. Figure 61 , Figure 61 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 via 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.

[0274] 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.

[0275] 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 includes a housing and a valve body assembly, a first evaporator, and a condenser disposed within the housing. The housing includes a plurality of coolant interfaces, each of which is used to connect to a coolant pipeline. 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 includes a first heat exchange plate, which is connected to the valve body assembly through the two coolant interfaces; The power module includes a second heat exchange plate, which 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 through 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 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.

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

5. The energy storage device according to any one of claims 1 to 3, 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 3, 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 3, 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 3, 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 3, 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 3, 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 3, 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 3, 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 3, 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 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 the 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 according to 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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