Heat dissipation system and energy storage system

Abstract

Provided in the present application are a heat dissipation system and an energy storage system. The heat dissipation system comprises a case and a thermal management module, the thermal management module being arranged in the case. A partition plate in the case divides the case into a temperature control chamber and a control chamber. The temperature control chamber is located above the control chamber. The thermal management module comprises at least two compressors, at least two water pumps, a plate heat exchange assembly and an electric control box, which are located in the control chamber. The compressors and the electric control box are sequentially arranged in the direction of width, the plate heat exchange assembly and the water pumps are sequentially arranged in the direction of width, and the electric control box and the water pumps are sequentially arranged in the direction of length. The compressors and the water pumps are connected to the plate heat exchange assembly, and the compressors and the water pumps are connected to the electric control box. The thermal management module further comprises a liquid cooling unit located in the temperature control chamber, the plate heat exchange assembly and the electric control box being connected to the liquid cooling unit. The heat dissipation system of the present application can realize hydraulic-electrical isolation and multiple thermal management systems, such that thermal management can still be performed in a scenario where a single thermal management system fails, thus improving the reliability of the energy storage system.

Description

A heat dissipation system and energy storage system

[0001] CROSS-REFERENCE TO RELATED APPLICATIONS

[0002] This application claims priority to the Chinese patent application filed with the State Intellectual Property Office of the People's Republic of China on November 27, 2023, with application number 202311604268.1 and invention name "A heat dissipation system and energy storage system", the entire contents of which are incorporated by reference into this application. Technical Field

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

[0004] As the world increases its support for the development of new energy technologies, various energy storage-related technologies have been widely used. Among them, energy storage containers have been widely used as energy storage devices.

[0005] As the energy density of energy storage containers continues to increase, their cooling systems require thermal management modules with stronger and more efficient heat dissipation capabilities. However, in actual use, components such as the compressor and water pump within the thermal management module are prone to wear and tear. When a thermal management module malfunctions, it must be completely disassembled and removed from the container for replacement and repair, which is inconvenient, time-consuming, and costly. Furthermore, the complex circuitry and water systems of liquid cooling units pose a safety hazard of water-electricity contact during replacement and repair, compromising safe operation.

[0006] Summary of the Invention

[0007] The present application provides a heat dissipation system and an energy storage system, which can realize the water and electricity isolation of the thermal management module while realizing a multi-thermal management system of the energy storage system, thereby improving the reliability of the energy storage system.

[0008] In a first aspect, the present application provides a heat dissipation system. The heat dissipation system includes a housing and a thermal management module, which is disposed within the housing. Specifically, a partition is provided within the housing, which divides the interior space of the housing into a temperature control chamber and a control chamber, wherein the temperature control chamber is located above the control chamber along the height direction of the housing. The thermal management module includes at least two compressors, at least two water pumps, a plate heat exchanger assembly, and an electrical control box, wherein the at least two compressors, the at least two water pumps, the plate heat exchanger assembly, and the electrical control box are located within the control chamber. The at least two compressors and the electrical control box are arranged sequentially along the width direction of the housing, the plate heat exchanger assembly and the at least two water pumps are arranged sequentially along the width direction, and the electrical control box and the at least two water pumps are arranged sequentially along the length direction of the housing. The at least two compressors and the at least two water pumps are respectively connected to the plate heat exchanger assembly, and the at least two compressors and the at least two water pumps are respectively connected to the electrical control box. In addition, the thermal management module also includes a liquid cooling unit, which is located within the temperature control chamber, and the plate heat exchanger assembly and the electrical control box are respectively connected to the liquid cooling unit.

[0009] The heat dissipation system of the present application can be applied to energy storage systems. The plate exchange components of the thermal management module are connected to the compressor, water pump, and liquid cooling unit respectively, which can realize heat exchange between the heat dissipation circuit, the refrigerant circuit, and the battery cooling circuit. This allows the compressor, water pump, and electrical control box to be spaced apart to achieve water and electricity isolation. In addition, multiple compressors and water pumps can be set to realize a multi-thermal management system. This allows thermal management to be performed even in the event of failure of a single thermal management system, thereby improving the reliability of the energy storage system.

[0010] In this application, the specific layout of the compressor, water pump, plate-type heat exchanger assembly, and electrical control box can be designed according to actual needs. For example, in one possible implementation, the at least two compressors, the at least two water pumps, the plate-type heat exchanger assembly, and the electrical control box can be arranged in an array.

[0011] In one possible implementation, the thermal management module can implement a dual thermal management system. Specifically, the at least two compressors may include a first compressor and a second compressor, arranged sequentially along the width of the system. The at least two water pumps may include a first water pump and a second water pump, arranged sequentially along the width of the system. Accordingly, the plate exchanger assembly includes a first fluid circuit, a second fluid circuit, a first water circuit, and a second water circuit. The first compressor is connected to the first fluid circuit, the second compressor is connected to the second fluid circuit, the first water pump is connected to the first water circuit, and the second water pump is connected to the second water circuit. The dual thermal management system includes two thermal management systems, one of which includes the first compressor, the first fluid circuit, the first water pump, the first water circuit, and a liquid cooling unit, and the other includes the second compressor, the second fluid circuit, the second water pump, the second water circuit, and a liquid cooling unit. These two thermal management systems can be used to provide thermal management for the energy storage system when it is operating normally. If one thermal management system fails or undergoes maintenance, the other thermal management system can still provide thermal management for the energy storage system.

[0012] In the dual thermal management system described above, the plate exchange assembly can include a first plate exchange module and a second plate exchange module, which are isolated from each other. The first fluid circuit and the first water circuit are located in the first plate exchange module, while the second fluid circuit and the second water circuit are located in the second plate exchange module. Therefore, the first plate exchange module is used in one thermal management system, while the second plate exchange module is used in the other. The independent configuration of the first and second plate exchange modules allows maintenance on one thermal management system without affecting the operation of the other.

[0013] In one possible implementation, the first plate exchange module may specifically include a first refrigerant substrate and a first water path substrate that are relatively and fixedly connected, the first agent path is located on the first refrigerant substrate, and the first water path is located on the first water path substrate. Similarly, the second plate exchange module may include a second refrigerant substrate and a second water path substrate that are relatively and fixedly connected, the second agent path is located on the second refrigerant substrate, and the second water path is located on the second water path substrate. The first plate exchange module and the second plate exchange module integrate functions such as the evaporation plate exchange, the condensation plate exchange, the water path substrate, and the refrigerant substrate, simplifying the number of thermal management components and pipelines, saving space, and reducing heat exchange between the fluid in the pipeline and the external environment, thereby improving the heat dissipation efficiency of the heat dissipation system.

[0014] In a possible implementation, the first refrigerant substrate and the second refrigerant substrate are an integrated structure, and the first water channel substrate and the second water channel substrate are an integrated structure, thereby simplifying the structure of the plate exchange assembly and reducing the occupied space of the heat dissipation system.

[0015] When setting the water pump, the first water pump and the second water pump can be arranged opposite to each other in the width direction, the axis of the first water pump in the width direction does not overlap with the axis of the second water pump in the width direction, and the first water pump is located on the side of the second water pump facing the plate change assembly. The first water pump is provided with a first inlet and a first outlet, and the first outlet is located at an end of the first water pump close to the plate change assembly. The first outlet is connected to the first water channel, and the first inlet is used to connect to the battery cooling passage. The second water pump is provided with a second inlet and a second outlet, and the second inlet is located at an end of the second water pump away from the plate change assembly. The second inlet is connected to the battery cooling passage, and the second outlet is connected to the second water channel. In this implementation, the first outlet of the first water pump is close to the plate change assembly, thereby reducing the space occupied by the pipeline between the first water pump and the plate change assembly. The second inlet of the second water pump is away from the plate change assembly and can be directly connected to the battery cooling passage, thereby simplifying the connection and installation of the second water pump and the battery cooling passage.

[0016] In order to reduce the space occupied by the water pump, the size of the first water pump can be different from the size of the second water pump. For example, the cross-sectional area of ​​the first water pump perpendicular to the width direction is different from the cross-sectional area of ​​the second water pump perpendicular to the width direction. In this way, the flow rate of the first water pump can be different from the flow rate of the second water pump.

[0017] In one possible implementation, a side of the electric control box away from the compressor may be hinged to the box body, so that the water pump can be maintained or replaced by rotating the electric control box out of the box body.

[0018] In one possible implementation, the liquid cooling unit may include a radiator and a fan, with the fan located on a side of the radiator facing away from the control room, and a filter disposed on the surface of the radiator. The plate exchanger assembly may also include a third water channel, with the radiator communicating with the third water channel.

[0019] In one possible implementation, the enclosure includes a top wall, a bottom wall, and four side walls. The top and bottom walls are arranged parallel to each other, and the four side walls are perpendicular to the top wall. Of the four side walls, the one on the side of the electrical control box facing away from the water pump is provided with a cabinet door. This allows personnel to directly access the compressor and electrical control box for maintenance or replacement after opening the cabinet door.

[0020] In a second aspect, the present application also provides an energy storage system. The energy storage system includes an energy storage cabinet, a power converter and the heat dissipation system of the first aspect mentioned above. Particularly, a plurality of battery packs are provided in the energy storage cabinet. The heat dissipation system is arranged at one end of the energy storage cabinet, the plate-changing assembly is located on the side of at least two compressors facing the energy storage cabinet, and at least two water pumps are located on the side of the electrical control box facing the energy storage cabinet. The power converter is used to charge or discharge the multiple battery packs in the energy storage cabinet. In the energy storage system of the present application, the heat dissipation system can achieve water and electricity isolation, and implement a multi-thermal management system for the energy storage cabinet, so that the energy storage cabinet can also be thermally managed in the scenario where a single thermal management system fails, thereby improving the reliability of the energy storage system.

[0021] In one possible implementation, the energy storage cabinet includes a cabinet body, housing the multiple battery packs. A battery cooling passage is provided within the cabinet body, and at least two water pumps of the heat dissipation system are connected to the battery cooling passages. In this implementation, the cabinet body has a continuous space for mounting the battery packs, and the heat dissipation system is located on one side of the cabinet body. This not only improves cabinet space utilization, facilitating enhanced energy storage efficiency and integration of the energy storage cabinet, but also enables unified heat dissipation management for the multiple battery packs within the cabinet body, improving heat dissipation efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] FIG1 is a schematic diagram of an energy storage system provided in an embodiment of the present application;

[0023] FIG2 is a schematic diagram of a heat dissipation system and an energy storage cabinet provided in an embodiment of the present application;

[0024] FIG3 is a schematic diagram of a heat dissipation system and an energy storage cabinet provided in an embodiment of the present application;

[0025] FIG4 is another schematic diagram of a heat dissipation system provided in an embodiment of the present application;

[0026] FIG5 is another schematic diagram of a heat dissipation system provided in an embodiment of the present application;

[0027] FIG6 is a schematic diagram of a plate replacement assembly provided in an embodiment of the present application;

[0028] FIG7 is another schematic diagram of the plate replacement assembly provided in an embodiment of the present application.

[0029] Reference numerals: 10 - energy storage system 11 - energy storage cabinet 12 - power converter 13 - cooling system 111 - cabinet 112 - battery pack 131 - cabinet 132 - thermal management module 1311 - partition 1312 - temperature control room 1313 - control room 1321 - liquid cooling unit 1322 - compressor 1323 - water pump 1324 - plate replacement assembly 1325 - electrical control box 13211 - radiator 13212 - fan 1322a - first compressor 1322b - second compressor 1323a - first water pump 132 3b - Second water pump 1324a - First plate exchange module 1324b - Second plate exchange module 13241 - First refrigerant base plate 13242 - First water channel base plate 13243a - First multi-way valve 13243b - Second multi-way valve 13244 - First gas-liquid separator 13245a - First expansion valve 13245b - Second expansion valve 13246 - Third water channel base plate 13247 - Cooler 13248 - Condenser 13249 - Air intake 13250 - Exhaust port 13251 - Fluorine injection nozzle DETAILED DESCRIPTION

[0030] In order to make the purpose, technical solutions and advantages of this application clearer, this application will be further described in detail below with reference to the accompanying drawings.

[0031] It should be noted that the terms used in the following embodiments are only for the purpose of describing specific embodiments and are not intended to limit the present application. As used in the specification and claims of this application, the singular expressions "a," "an," "said," "above," "the," and "this" are intended to include expressions such as "one or more," unless the context clearly indicates otherwise.

[0032] References to "one embodiment" or "some embodiments" in this specification mean that a particular feature, structure, or characteristic described in conjunction with that embodiment is included in one or more embodiments of the present application. Thus, phrases such as "in one embodiment," "in some embodiments," "in other embodiments," and "in yet other embodiments" appearing in various places in this specification do not necessarily refer to the same embodiment, but rather mean "one or more but not all embodiments," unless otherwise specifically emphasized. The terms "including," "comprising," "having," and variations thereof mean "including but not limited to," unless otherwise specifically emphasized.

[0033] As the energy density of energy storage containers increases, the requirements for the heat dissipation efficiency and effectiveness of the thermal management module are also becoming increasingly stringent. For larger energy storage devices such as energy storage containers, the liquid cooling system in the thermal management module is relatively complex and has a large overall size. Due to the limited internal space of the container, in actual maintenance, if the liquid cooling system fails, it will require downtime for maintenance, and the entire thermal management module must be disassembled for repair and component replacement. This operation is cumbersome and affects the normal operation of the unit. In addition, the circuit system and water system of the liquid cooling system are cross-connected, posing a safety hazard.

[0034] Therefore, the present application provides a heat dissipation system and an energy storage system, which can realize the water and electricity isolation of the thermal management module while realizing a multi-thermal management system of the energy storage system, thereby improving the reliability of the energy storage system.

[0035] FIG1 is a schematic diagram of an energy storage system provided in an embodiment of the present application. As shown in FIG1 , the energy storage system 10 includes an energy storage cabinet 11, a power converter 12, and a heat dissipation system 13. A plurality of battery packs are provided in the energy storage cabinet 11, and the heat dissipation system 13 is provided at one end of the energy storage cabinet 11 and can be used to dissipate heat from the battery packs in the energy storage cabinet 11. The power converter 12 is used to charge or discharge the plurality of battery packs in the energy storage cabinet 11. For example, the power converter 12 can be used to convert the AC power output by an external AC power source into DC power and output it to the energy storage cabinet 11, and / or the power converter 12 can be used to convert the DC power output by the energy storage cabinet 11 into AC power and output it to a load or a power grid. In the energy storage system 10 of the present application, the thermal management module of the heat dissipation system 13 can realize water-electricity isolation and a multi-thermal management system, so that the energy storage cabinet 11 can also be thermally managed in the event of failure of a single thermal management system, thereby improving the reliability of the energy storage system 10.

[0036] The energy storage system 10 can be used, but is not limited to, in industrial and commercial energy storage scenarios such as small-scale industrial and commercial (e.g., small factories), medium-sized industrial and commercial, large-scale industrial and commercial, photovoltaic storage and charging stations, and small and medium-sized microgrids (e.g., islands), as well as power station scenarios such as wind and solar energy storage power stations, grid energy storage power stations, and large microgrids, for storing and releasing electrical energy. In practical applications, the energy storage cabinet 11 can be embodied in the form of a charging station, energy storage container, etc. The following is a detailed description using the heat dissipation system 13 applied to an energy storage container as an example.

[0037] FIG2 is a schematic diagram of a heat dissipation system and an energy storage cabinet provided in an embodiment of the present application, and FIG3 is a schematic diagram of a heat dissipation system and an energy storage cabinet provided in an embodiment of the present application. As shown in FIG2 and FIG3, in one embodiment, the energy storage cabinet 11 includes a cabinet 111, and the plurality of battery packs 112 are housed within the cabinet 111. The heat dissipation system 13 is located on one side of the cabinet 111, so that the cabinet 111 has a continuous space for installing the battery packs 112. On the one hand, this improves the space utilization of the cabinet 111, which is conducive to improving the energy storage effect and integration of the energy storage system 10; on the other hand, it can uniformly manage the heat dissipation of the plurality of battery packs 112 within the cabinet 111 to improve the heat dissipation efficiency. A battery cooling passage is provided within the cabinet 111, and the heat dissipation system 13 is connected to the battery cooling passage for thermal management of the battery packs 112 within the cabinet 111.

[0038] FIG4 is another schematic diagram of the heat dissipation system provided in an embodiment of the present application, and FIG5 is another schematic diagram of the heat dissipation system provided in an embodiment of the present application. As shown in FIG4 and FIG5 , the heat dissipation system 13 includes a housing 131 and a thermal management module 132, and the thermal management module 132 is disposed in the housing 131. In actual application, the housing 131 of the heat dissipation system 13 and the cabinet 111 of the energy storage cabinet 11 can be fixedly connected by welding or threaded connection, or the housing 131 and the cabinet 111 can also be an integrated structure. Specifically, a partition 1311 is provided in the housing 131, and the partition 1311 separates the housing 131 into a temperature control chamber 1312 and a control chamber 1313. Among them, the temperature control chamber 1312 and the control chamber 1313 are distributed in sequence along the height direction H of the housing 131, and the temperature control chamber 1312 is located above the control chamber 1313. The thermal management module 132 includes a liquid cooling unit 1321, at least two compressors 1322, at least two water pumps 1323, a plate changing assembly 1324 and an electrical control box 1325, wherein the liquid cooling unit 1321 is located in the temperature control room 1312, and the above-mentioned at least two compressors 1322, the above-mentioned at least two water pumps 1323, the plate changing assembly 1324 and the electrical control box 1325 are located in the control room 1313.

[0039] Continuing with Figures 4 and 5 , within control room 1313, the at least two compressors 1322 and the electrical control box 1325 are sequentially arranged along the width direction W of housing 131. The plate exchanger assembly 1324 and the at least two water pumps 1323 are sequentially arranged along the width direction W. The electrical control box 1325 and the at least two water pumps 1323 are sequentially arranged along the length direction L of housing 131. Specifically, when installing thermal management module 132, liquid cooling unit 1321, the at least two compressors 1322, and the at least two water pumps 1323 are each connected to plate exchanger assembly 1324, and the liquid cooling unit 1321, the at least two compressors 1322, and the at least two water pumps 1323 are each connected to the electrical control box 1325. Therefore, plate exchanger assembly 1324 enables heat exchange between the heat dissipation circuit, the refrigerant circuit, and the battery cooling circuit, allowing the compressor 1322, the water pump 1323, and the electrical control box 1325 to be spaced apart, achieving water and electrical isolation. Furthermore, the specific number of compressors 1322 and water pumps 1323 can be set to multiple to implement a multi-thermal management system, so that thermal management can also be performed in the scenario where a single thermal management system fails, thereby improving the reliability of the energy storage system 10.

[0040] It should be noted that in actual use, the energy storage system 10 can be placed on the ground. The surface of the energy storage system 10 that contacts the ground is the bottom surface. The dimensions of the bottom surface include length and width. The length direction of the bottom surface is in the same direction as the length direction L of the cabinet 111 and the box 131, and the width direction of the bottom surface is in the same direction as the width direction W of the cabinet 111 and the box 131. The dimension of the cabinet 111 and the box 131 perpendicular to the bottom surface is the height, and this height direction is the height direction H of the cabinet 111 and the box 131.

[0041] In an embodiment of the present application, plate exchanger assembly 1324 integrates the functions of an evaporation plate exchanger, a condensing plate exchanger, a water circuit base plate, and a refrigerant base plate, simplifying the number of thermal management components and piping, thereby saving space. Furthermore, the heat exchange of the heat dissipation circuit, the refrigerant circuit, and the battery cooling circuit is integrated into plate exchanger assembly 1324, reducing heat exchange between the fluid in the piping and the external environment, thereby improving the heat dissipation efficiency of the heat dissipation system 13. In the above embodiment, the internal space of control chamber 1313 can be divided into interconnected compressor areas, electrical control areas, plate exchanger areas, and water pump areas. The specific layout of compressor 1322, water pump 1323, plate exchanger assembly 1324, and electrical control box 1325 can be designed based on actual needs. For example, in one embodiment, the at least two compressors 1322, the at least two water pumps 1323, plate exchanger assembly 1324, and electrical control box 1325 can be arranged in an array. That is to say, the compressor area, the electronic control area, the plate exchanger area and the water pump area are distributed in a rectangular array, the compressor area and the electronic control area are arranged side by side along the width direction W of the box body 131, the plate exchanger area and the water pump area are arranged side by side along the width direction W of the box body 131, the plate exchanger area and the compressor area are arranged side by side along the length direction L of the box body 131, and the water pump area and the electronic control area are arranged side by side along the length direction L of the box body 131.

[0042] In actual application, the compressor 1322 and the water pump 1323 need to be maintained regularly. The box body 131 includes an enclosed top wall, a bottom wall and four side walls, the top wall and the bottom wall are arranged in parallel, and the four side walls are perpendicular to the top wall. Among the four side walls, the side wall located on the side of the electric control box 1325 away from the water pump 1323 is provided with a cabinet door. In this way, when the cabinet door of the control room 1313 is opened, the staff can operate the electric control box 1325 to activate and deactivate each thermal management system accordingly, so that the compressor 1322 can be directly maintained or replaced without deactivating the thermal management system. In one embodiment, the side of the electric control box 1325 away from the at least two compressors 1322 is hinged to the box body 131. In this way, the water pump 1323 area can be maintained by simply rotating the electric control box 1325 out of the box body 131, without disassembling the electric control box 1325 as a whole, further simplifying the maintenance operation.

[0043] In addition, in the present application, the water pump area can also be provided with at least one of a filter, a three-way valve, a rehydration pump, a heater, other valve components and sensors, so that the water channel component can be set in the water pump area to realize the integration of the water channel of the thermal management system.

[0044] The thermal management module 132 of the present application can realize a multi-thermal management system. As shown in Figure 5, in one embodiment, the thermal management module 132 can realize a dual thermal management system. Specifically, the at least two compressors 1322 may include a first compressor 1322a and a second compressor 1322b, and the first compressor 1322a and the second compressor 1322b are arranged in sequence along the width direction W. That is to say, the first compressor 1322a and the second compressor 1322b are arranged side by side, and when the cabinet door is opened, the staff can directly maintain the first compressor 1322a and the second compressor 1322b. The at least two water pumps 1323 may include a first water pump 1323a and a second water pump 1323b, and the first water pump 1323a and the second water pump 1323b are arranged in sequence along the width direction W. Accordingly, plate exchange assembly 1324 includes a first fluid circuit, a second fluid circuit, a first water circuit, and a second water circuit. The first compressor 1322a is connected to the first fluid circuit, the second compressor 1322b is connected to the second fluid circuit, the first water pump 1323a is connected to the first water circuit, and the second water pump 1323b is connected to the second water circuit. The dual thermal management system includes a first thermal management system and a second thermal management system. The first thermal management system includes the first compressor 1322a, the first fluid circuit, the first water pump 1323a, the first water circuit, and the liquid cooling unit 1321. The second thermal management system includes the second compressor 1322b, the second fluid circuit, the second water pump 1323b, the second water circuit, and the liquid cooling unit 1321. The first thermal management system and the second thermal management system can be used to perform thermal management when the energy storage cabinet is operating normally. If either thermal management system fails or undergoes maintenance, the other thermal management system can still perform thermal management of the energy storage system 10.

[0045] FIG6 is a schematic diagram of a plate exchange assembly provided in an embodiment of the present application, and FIG7 is another schematic diagram of a plate exchange assembly provided in an embodiment of the present application. As shown in FIG5, FIG6 and FIG7, in the above-mentioned dual thermal management system, the plate exchange assembly 1324 may include a first plate exchange module 1324a and a second plate exchange module 1324b, and the first plate exchange module 1324a and the second plate exchange module 1324b are arranged in isolation. Among them, the first agent circuit and the first water circuit are arranged in the first plate exchange module 1324a, and the second agent circuit and the second water circuit are arranged in the second plate exchange module 1324b. Therefore, the first plate exchange module 1324a is used for the first thermal management system, and the second plate exchange module 1324b is used for the second thermal management system. The first plate exchange module 1324a and the second plate exchange module 1324b are arranged independently of each other, so that a single thermal management system can be maintained without affecting the working state of the other thermal management system.

[0046] In one embodiment, the first plate exchange module 1324a may specifically include a first refrigerant base plate 13241 and a first water channel base plate 13242 that are relatively and fixedly connected, with the first agent path located on the first refrigerant base plate 13241 and the first water channel located on the first water channel base plate 13242. Similarly, the second plate exchange module 1324b may include a second refrigerant base plate and a second water channel base plate that are relatively and fixedly connected, with the second agent path located on the second refrigerant base plate and the second water channel located on the second water channel base plate. The first plate exchange module 1324a and the second plate exchange module 1324b integrate functions such as the evaporation plate exchange, the condensation plate exchange, the water channel base plate, and the refrigerant base plate, simplifying the number of thermal management components and pipelines, saving space, and reducing heat exchange between the fluid in the pipeline and the external environment, thereby improving the heat dissipation efficiency of the heat dissipation system 13.

[0047] In one embodiment, the first refrigerant base plate 13241 and the second refrigerant base plate are integrally formed, and the first water channel base plate 13242 and the second water channel base plate are integrally formed, thereby simplifying the structure of the plate exchange assembly 1324 and reducing the space occupied by the plate exchange assembly 1324. Thus, if there is sufficient space within the control room 1313, the compressor 1322 can be provided on the side of the plate exchange assembly 1324 facing away from the water pump 1323, thereby achieving a three-compressor structure for the cooling system 13.

[0048] Continuing with Figures 6 and 7, the plate exchange assembly 1324 can also be equipped with a multi-way valve, a gas-liquid separator, and an expansion valve, thereby simplifying the piping design and simplifying installation. Taking the first plate exchange module 1324a as an example, the first plate exchange module 1324a specifically includes a first refrigerant base plate 13241, a first water channel base plate 13242, and a third water channel base plate 13246, arranged in sequence. The first water channel base plate 13242 is located on the side of the third water channel base plate 13246 facing the compressor 1322, and is equipped with a first multi-way valve 13243a, a second multi-way valve 13243b, a first expansion valve 13245a, and a second expansion valve 13245b. The first water channel base plate 13242 is provided with a first water channel inlet IN1, a first water channel outlet OUT1, a second water channel inlet IN2, and a second water channel outlet OUT2 on the side facing the compressor 1322. The first water channel inlet IN1 and the first water channel outlet OUT1 are respectively connected to the ends of the first water channel, and the first water channel inlet IN1 and the first water channel outlet OUT1 are respectively connected to the battery cooling passage, wherein either the first water channel inlet IN1 or the first water channel outlet IN1 is connected to the first water pump 1323a. The second water channel inlet IN2 and the second water channel outlet OUT2 are respectively connected to the ends of the second water channel, and the second water channel inlet IN2 and the second water channel outlet OUT2 are respectively connected to the liquid cooling unit 1321, wherein either the second water channel inlet IN2 and the second water channel outlet OUT2 are connected to the radiator 13211 of the liquid cooling unit 1321. In addition, the first plate replacement module 1324a may also include a first gas-liquid separator 13244, which is located on the side of the third water channel substrate 13246 facing the compressor 1322. A cooler 13247 and a condenser 13248 are provided on the side of the first refrigerant substrate 13241 facing away from the third water channel substrate 13246. Cooler 13247 and condenser 13248 are each connected to the first refrigerant path. The first refrigerant substrate 13241 is provided with an intake port 13249 and an exhaust port 13250, which are connected to both ends of the first refrigerant path and are each connected to the compressor 1322. Furthermore, a fluorine injection nozzle 13251 is provided on the side of the first water channel substrate 13242 facing the compressor 1322, through which refrigerant is added to the first refrigerant path.

[0049] When setting the water pump 1323, the first water pump 1323a and the second water pump 1323b can be arranged opposite to each other along the width direction W. The axis of the first water pump 1323a along the width direction W does not overlap with the axis of the second water pump 1323b along the width direction W, and the first water pump 1323a is located on the side of the second water pump 1323b facing the plate replacement assembly 1324. The first water pump 1323a is provided with a first inlet and a first outlet, and the first outlet is located at the end of the first water pump 1323a that is close to the plate replacement assembly 1324. The first outlet is connected to the first water channel, and the first inlet is used to connect to the battery cooling channel. The second water pump 1323b is provided with a second inlet and a second outlet, and the second inlet is located at the end of the second water pump 1323b that is away from the plate replacement assembly 1324. The second inlet is connected to the battery cooling channel, and the second outlet is connected to the second water channel. In this implementation, the first outlet of the first water pump 1323a is located near the plate-changing assembly 1324, thereby reducing the space occupied by the piping between the first water pump 1323a and the plate-changing assembly 1324. The second inlet of the second water pump 1323b is located away from the plate-changing assembly 1324 and can be directly connected to the battery cooling passage, thereby simplifying the connection and installation of the second water pump 1323b to the battery cooling passage.

[0050] To reduce the space occupied by the water pumps 1323, the dimensions of the first water pump 1323a and the second water pump 1323b can be different. Specifically, the cross-sectional area of ​​the first water pump 1323a perpendicular to the width direction W can be different from the cross-sectional area of ​​the second water pump 1323b perpendicular to the width direction W. This also allows the flow rates of the first water pump 1323a and the second water pump 1323b to be different, thereby configuring the two thermal management systems to have different heat dissipation efficiencies.

[0051] As shown in Figure 4, in one embodiment, liquid cooling unit 1321 may include a radiator 13211 and a fan 13212. Fan 13212 is located on the side of radiator 13211 facing away from control chamber 1313. A filter is provided on the surface of radiator 13211 to prevent small particles such as dust or dirt from entering radiator 13211 and affecting its performance. Plate exchange assembly 1324 may also include a third water channel, with radiator 13211 communicating with the third water channel, thereby connecting the heat dissipation circuit. Specifically, the third water channel may be provided on the first water channel substrate 13242 and the second water channel substrate, thereby allowing two thermal management systems to share a single heat dissipation circuit.

[0052] 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. A heat dissipation system, characterized in that: It includes a box and a thermal management module, wherein the thermal management module is arranged in the box, wherein: A partition is provided in the box body, and the partition divides the internal space of the box body into a temperature control room and a control room. Along the height direction of the box body, the temperature control room is located above the control room; The thermal management module includes at least two compressors, at least two water pumps, a plate exchange assembly and an electric control box located in the control room; the at least two compressors and the electric control box are sequentially arranged along the width direction of the box body, the plate exchange assembly and the at least two water pumps are sequentially arranged along the width direction, and the electric control box and the at least two water pumps are sequentially arranged along the length direction of the box body; the at least two compressors and the at least two water pumps are respectively connected to the plate exchange assembly and are respectively connected to the electric control box; The thermal management module also includes a liquid cooling unit located in the temperature control room, and the plate exchange assembly and the electrical control box are respectively connected to the liquid cooling unit.

2. The heat dissipation system according to claim 1, characterized in that: The at least two compressors, the at least two water pumps, the plate exchange assembly and the electric control box are distributed in an array.

3. The heat dissipation system according to claim 1 or 2, characterized in that: The at least two compressors include a first compressor and a second compressor, and the first compressor and the second compressor are sequentially arranged along the width direction; The at least two water pumps include a first water pump and a second water pump, and the first water pump and the second water pump are sequentially arranged along the width direction; The plate exchange assembly includes a first agent circuit, a second agent circuit, a first water circuit and a second water circuit. The first compressor is connected to the first agent circuit, the second compressor is connected to the second agent circuit, the first water pump is connected to the first water circuit, and the second water pump is connected to the second water circuit.

4. The heat dissipation system according to claim 3, characterized in that: The plate exchange assembly includes a first plate exchange module and a second plate exchange module. The first agent path and the first water path are arranged in the first plate exchange module, and the second agent path and the second water path are arranged in the second plate exchange module.

5. The heat dissipation system according to claim 4, characterized in that: The first plate exchange module comprises a first refrigerant substrate and a first water channel substrate which are opposite and fixedly connected, the first agent channel is located on the first refrigerant substrate, and the first water channel is located on the first water channel substrate; The second plate exchange module includes a second refrigerant substrate and a second water channel substrate that are opposite and fixedly connected, the second agent channel is located on the second refrigerant substrate, and the second water channel is located on the second water channel substrate.

6. The heat dissipation system according to claim 5, characterized in that: The first refrigerant substrate and the second refrigerant substrate are an integrated structure, and the first water channel substrate and the second water channel substrate are an integrated structure.

7. The heat dissipation system according to any one of claims 3 to 6, characterized in that: The first water pump and the second water pump are arranged opposite to each other along the width direction, the axis of the first water pump along the width direction does not overlap with the axis of the second water pump along the width direction, and the first water pump is located on a side of the second water pump facing the plate replacement assembly; The first water pump is provided with a first inlet and a first outlet, the first outlet is located at one end of the first water pump close to the plate replacement assembly; the first outlet is communicated with the first water path, and the first outlet is used to communicate with the heat dissipation path of the battery pack; The second water pump is provided with a second inlet and a second outlet, the second inlet is located at an end of the second water pump away from the plate replacement assembly; the second inlet is communicated with the heat dissipation passage, and the second outlet is communicated with the second water passage.

8. The heat dissipation system according to any one of claims 3 to 7, characterized in that: A cross-sectional area of ​​the first water pump perpendicular to the width direction is different from a cross-sectional area of ​​the second water pump perpendicular to the width direction.

9. The heat dissipation system according to any one of claims 1 to 8, characterized in that: A side of the electric control box away from the at least two compressors is hinged to the box body.

10. The heat dissipation system according to any one of claims 1 to 9, characterized in that: The liquid cooling unit comprises a radiator and a fan, wherein the fan is located on a side of the radiator away from the control room, and a filter is provided on the surface of the radiator; The plate replacement assembly also includes a third water channel, and the radiator is connected to the third water channel.

11. The heat dissipation system according to any one of claims 1 to 10, characterized in that: The box body comprises an enclosed top wall, a bottom wall and four side walls, the top wall and the bottom wall are arranged in parallel, and the four side walls are perpendicular to the top wall; Among the four side walls, the side wall located on the side of the electric control box away from the at least two water pumps is provided with a cabinet door.

12. An energy storage system, characterized in that: The energy storage system comprises an energy storage cabinet, a power converter and a heat dissipation system as claimed in any one of claims 1 to 11, wherein: The energy storage cabinet is provided with a plurality of battery packs; The heat dissipation system is arranged at one end of the energy storage cabinet, the plate exchange assembly is located on a side of the at least two compressors facing the energy storage cabinet, and the at least two water pumps are located on a side of the electric control box facing the energy storage cabinet; The power converter is used to charge or discharge the multiple battery packs in the energy storage cabinet.

13. The energy storage system according to claim 12, characterized in that: The energy storage cabinet comprises a cabinet body, wherein the plurality of battery packs are accommodated in the cabinet body; a battery cooling passage is provided in the cabinet body, and the at least two water pumps are respectively connected to the battery cooling passage.

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