Light, storage, charging and vehicle heat management system

Abstract

The invention provides a light, storage, charging and vehicle heat management system. The thermal management system comprises a plurality of passages, a valve body assembly and a heat dissipation device, wherein the plurality of passages are communicated with the valve body assembly. Wherein the plurality of channels comprise one or more of a liquid cooling channel of the charging host, a liquid cooling channel of the charging gun and a liquid cooling channel of the vehicle-mounted battery. In addition, the channels further comprise a liquid cooling channel of the energy storage equipment and a liquid cooling channel where the heat dissipation device is located. The heat dissipation device is used for cooling the cooling liquid flowing in the liquid cooling channel where the heat dissipation device is located through a compressor or natural cooling. The valve body assembly is used for controlling one or more of the multiple channels to be communicated with the liquid cooling channel where the heat dissipation device is located. According to the thermal management system provided by the invention, thermal management in at least two application scenes is subjected to integrated design, so that the resource utilization rate can be effectively improved while the thermal management requirements of the scenes integrated in the thermal management system are met, and the operation energy efficiency of the thermal management system can be improved.

Description

Technical Field

[0001] The present application relates to the field of energy technology, and in particular to a light, storage, charging and vehicle thermal management system. Background Art

[0002] With the continuous development and widespread application of clean energy, energy storage devices that can store electrical energy have begun to be widely used in many fields. For example, energy storage devices can be used in charging stations to power charging hosts. Since temperature is a factor that affects the operating efficiency of energy storage devices or charging hosts, in order to ensure the safe and efficient operation of energy storage devices or charging hosts, a thermal management system is usually set up for them.

[0003] At present, the thermal management systems used in energy storage devices or charging hosts are mostly designed based on liquid cooling technology to meet their thermal management requirements under high-power operation. However, the thermal management requirements of energy storage devices or charging hosts are usually designed separately, which is not convenient for unified control of thermal management systems in various scenarios, and the resource utilization rate is low. Summary of the invention

[0004] The present application provides a light, storage, charging, and vehicle thermal management system to improve the integration of the thermal management system and thus improve resource utilization.

[0005] The present application provides a thermal management system, which includes multiple passages, a valve body assembly and a heat sink, and the multiple passages are all connected to the valve body assembly. Among them, the multiple passages include one or more of the liquid cooling passages of the charging host, the liquid cooling passages of the charging gun, and the liquid cooling passages of the vehicle battery. In addition, the above multiple passages also include the liquid cooling passages of the energy storage device and the liquid cooling passages where the heat sink is located. The heat sink is used to cool the coolant flowing in the liquid cooling passage where the heat sink is located by a compressor or natural cooling. The valve body assembly is used to control one or more of the multiple passages to be connected to the liquid cooling passage where the heat sink is located. In the present application, the energy storage device is used to transmit the stored electric energy to the charging host, and the charging host transmits the electric energy to the charging gun, which is used to charge the vehicle battery through a cable. The liquid cooling passage of the charging gun is used to dissipate heat for the cable, and the liquid cooling passage of the vehicle battery is used to dissipate heat for the vehicle battery. The thermal management system provided in the present application integrates the thermal management modules in different application scenarios, and uses the valve body assembly to control each liquid cooling passage to be connected in a corresponding manner, so that the thermal management system operates in the corresponding mode to meet the thermal management requirements in at least two scenarios. Therefore, the design of the thermal management system provided in this application can effectively improve resource utilization, thereby improving the energy efficiency of the thermal management system.

[0006] Based on the principles of thermal management module fusion design provided in this application, at least two thermal management modules can be integrated into the same thermal management system according to actual application scenarios to improve the integration of the thermal management system.

[0007] Exemplarily, in a possible implementation of the present application, the energy storage device includes a battery pack and a power converter, and the power converter of the energy storage device is used to perform power conversion on the electric energy output by the battery pack. In the present application, the liquid cooling passage of the energy storage device includes the liquid cooling passage of the battery pack and the liquid cooling passage of the power converter. Among them, the liquid cooling passage of the battery pack is used for heat exchange with the battery pack, and the liquid cooling passage of the power converter is used for heat exchange with the power converter of the energy storage device. The liquid cooling passage of the battery pack and the liquid cooling passage of the power converter are connected in series and then connected to the valve port of the valve body assembly. Alternatively, the liquid cooling passage of the battery pack and the liquid cooling passage of the power converter are respectively connected to the valve port of the valve body assembly. In this way, the thermal management system provided in the present application can be used to perform thermal management on the battery modules and power converters of the energy storage device to improve the utilization rate of the thermal management system.

[0008] In the thermal management system provided by the present application, when the above-mentioned multiple passages include the liquid cooling passage of the charging gun and the liquid cooling passage of the vehicle battery, the liquid cooling passage of the charging gun and the liquid cooling passage of the vehicle battery are connected in series and then connected to the valve port of the valve body assembly. In this way, during the process of charging the vehicle battery through the charging gun, the thermal management system can be used to manage the temperature of the cable of the charging gun and the vehicle battery, so as to improve the charging efficiency of the charging gun and the vehicle battery, thereby improving the energy efficiency of the thermal management system.

[0009] In addition, when the multiple passages include a liquid cooling passage of the charging host, the liquid cooling passage where the heat dissipation device is located includes a liquid cooling passage of the condenser, the refrigerant passage of the condenser is connected to the compressor, and the refrigerant passage of the condenser is used for heat exchange with the liquid cooling passage of the condenser. In addition, the liquid cooling passage of the charging host is connected in series or in parallel with the liquid cooling passage of the condenser and then connected to the valve port of the valve body assembly. In this way, the coolant cooled by the heat dissipation device can be used to cool the condenser and the charging host at the same time, which is beneficial to improving the energy efficiency of the thermal management system.

[0010] In a possible implementation of the present application, the multiple paths may also include a liquid cooling path for a photovoltaic device, and the liquid cooling path for the photovoltaic device is used to dissipate heat for a power converter of the photovoltaic device. In addition, the liquid cooling path for the photovoltaic device is connected in series or in parallel with the liquid cooling path for the charging host. In this way, the coolant cooled by the heat dissipation device can not only cool the condenser and the charging host, but also dissipate heat for the power converter of the photovoltaic device, which is conducive to improving the utilization rate of the thermal management system.

[0011] In addition, the multiple passages may also include a liquid cooling passage where the indoor heat exchanger is located, and the indoor heat exchanger is used for heat exchange with the indoor environment. The liquid cooling passage where the indoor heat exchanger is located is connected to the valve port of the valve body assembly. In this way, the valve body assembly can be used to control the connection between the liquid cooling passage where the heat sink is located and the liquid cooling passage where the indoor heat exchanger is located, so that the heat sink is used to manage the indoor ambient temperature. The thermal management system provided by the present application can integrate the vehicle, storage, charging, and vehicle scenes while also integrating the life scenes, which can further improve the integration of the thermal management system and help improve the utilization rate of the thermal management system.

[0012] By adopting the above-mentioned thermal management system provided in the present application, the corresponding liquid cooling passage can be opened through the valve body assembly according to the thermal management requirements in the specific application scenario.

[0013] For example, in a possible implementation of the present application, when the valve body assembly controls one or more of the liquid cooling passages of the battery pack, the liquid cooling passages of the vehicle battery, and the liquid cooling passages of the indoor heat exchanger to be connected to the liquid cooling passage of the condenser, the condenser can be used to heat the coolant in the liquid cooling passages that are connected. In other words, the working principle of the heat pump can be used to make the condenser have a higher temperature, so that the condenser can be used to heat the coolant in each of the liquid cooling passages that are connected to the liquid cooling passage of the condenser, which is conducive to improving the energy efficiency of the thermal management system.

[0014] In another possible implementation of the present application, when the valve body assembly controls one or more of the liquid cooling passages of the charging gun, the charging host, and the photovoltaic device to be connected to the liquid cooling passage of the battery pack, the heat generated by the cable, the heat generated by the charging host, and the heat generated by the power converter of the photovoltaic device are used to heat the coolant in the connected liquid cooling passages. In this way, the heat generated by each heat-generating component can be used to heat the battery pack to realize the waste heat recovery of each heat-generating component, thereby realizing efficient use of heat.

[0015] In addition, when the valve body assembly controls one or more of the liquid cooling passages of the charging gun, the charging host, and the photovoltaic device to be connected to the liquid cooling passage of the vehicle battery, the heat generated by the cable, the heat generated by the charging host, and the heat generated by the power converter of the photovoltaic device are used to heat the coolant in the connected liquid cooling passages. In this way, the heat generated by each heat-generating component can be used to heat the vehicle battery to realize the waste heat recovery of each heat-generating component, thereby realizing efficient use of heat.

[0016] In another possible implementation of the present application, the liquid cooling passage where the heat dissipation device is located also includes a liquid cooling passage of the evaporator. The refrigerant passage of the evaporator is connected to the compressor, and the refrigerant passage of the evaporator is used for heat exchange with the liquid cooling passage of the evaporator. Then, when the valve body assembly controls the liquid cooling passage of the energy storage device, the liquid cooling passage of the vehicle battery, the liquid cooling passage of the charging gun, the liquid cooling passage of the charging host, the liquid cooling passage of the photovoltaic device, and one or more of the liquid cooling passages where the indoor heat exchanger is located to be connected to the liquid cooling passage of the evaporator, the evaporator is used to dissipate the heat of the coolant in the liquid cooling passages that are connected to each other. Thereby, the heat dissipation device can use the compressor to cool the coolant in the liquid cooling passages that are connected to each other, which can meet the thermal management requirements in high temperature outdoor environments.

[0017] In a possible implementation of the present application, the liquid cooling passage where the heat dissipation device is located also includes a liquid cooling passage of a radiator, and the radiator is used to cool the coolant in the liquid cooling passage of the radiator by natural cooling. Then, when the valve body assembly controls the liquid cooling passage of the energy storage device, the liquid cooling passage of the vehicle battery, the liquid cooling passage of the charging gun, the liquid cooling passage of the charging host, the liquid cooling passage of the photovoltaic device, and one or more of the liquid cooling passages where the indoor heat exchanger is located to be connected to the liquid cooling passage of the radiator, the radiator is used to dissipate the coolant in the liquid cooling passages that are connected. That is, the heat dissipation of the above-mentioned liquid cooling passages that are connected is achieved by natural cooling, which can meet the heat dissipation requirements when the outdoor ambient temperature is more suitable.

[0018] In another possible implementation of the present application, the multiple passages also include a liquid cooling passage where the electric heater is located, and the electric heater is used to heat the coolant in the liquid cooling passage where the electric heater is located, and the liquid cooling passage where the electric heater is located is connected to the valve port of the valve body assembly. Then, when the valve body assembly controls one or more of the liquid cooling passages of the battery pack, the liquid cooling passages of the vehicle battery, and the liquid cooling passages of the indoor heat exchanger to be connected to the liquid cooling passage where the electric heater is located, the electric heater is used to heat the coolant in the liquid cooling passages that are connected. In this way, the heating requirements in colder outdoor scenes can be met by turning on the electric heater. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 A system architecture diagram of a charging station integrating light, storage, charging and vehicle provided in an embodiment of the present application;

[0020] Figure 2 Another system architecture diagram of a charging station integrating light, storage, charging and vehicle provided in an embodiment of the present application;

[0021] Figure 3 A schematic diagram of the structure of a thermal management system provided in an embodiment of the present application;

[0022] Figure 4a for Figure 3A schematic diagram of a flow path of an operating mode of a thermal management system is provided;

[0023] Figure 4b for Figure 3 A schematic diagram of a flow path of another operating mode of a thermal management system is provided;

[0024] Figure 4c for Figure 3 A schematic diagram of a flow path of another operating mode of a thermal management system is provided;

[0025] Figure 4d for Figure 3 A schematic diagram of a flow path of another operating mode of a thermal management system is provided;

[0026] Figure 4e for Figure 3 A schematic diagram of a flow path of another operating mode of a thermal management system is provided;

[0027] Figure 5 Another schematic diagram of the structure of the thermal management system provided in the embodiment of the present application;

[0028] Figure 6a for Figure 5 A schematic diagram of a flow path of an operating mode of a thermal management system is provided;

[0029] Figure 6b for Figure 5 A schematic diagram of a flow path of another operating mode of a thermal management system is provided;

[0030] Figure 6c for Figure 5 A schematic diagram of a flow path of another operating mode of a thermal management system is provided;

[0031] Figure 7 Another schematic diagram of the structure of the thermal management system provided in the embodiment of the present application;

[0032] Figure 8a for Figure 7 A schematic diagram of a flow path of an operating mode of a thermal management system is provided;

[0033] Figure 8b for Figure 7 A schematic diagram of a flow path of another operating mode of a thermal management system is provided;

[0034] Figure 8c for Figure 7 A schematic diagram of a flow path of another operating mode of a thermal management system is provided;

[0035] Figure 8d for Figure 7A schematic diagram of a flow path of another operating mode of a thermal management system is provided;

[0036] Figure 8e for Figure 7 A schematic diagram of a flow path of another operating mode of a thermal management system is provided;

[0037] Figure 8f for Figure 7 A schematic diagram of a flow path of another operating mode of a thermal management system is provided;

[0038] Fig. 9 Another schematic diagram of the structure of the thermal management system provided in the embodiment of the present application;

[0039] Fig.10a for Fig. 9 A schematic diagram of a flow path of an operating mode of a thermal management system is provided;

[0040] Fig.10b for Fig. 9 A schematic diagram of a flow path of another operating mode of a thermal management system is provided;

[0041] Fig.10c for Fig. 9 A schematic diagram of a flow path of another operating mode of a thermal management system is provided;

[0042] Fig.10d for Fig. 9 A schematic diagram of a flow path of another operating mode of a thermal management system is provided;

[0043] Fig.10e for Fig. 9 A flow path schematic diagram of another operating mode of a thermal management system is provided.

[0044] Reference numerals:

[0045] 100-charging host; 101-charging terminal; 102-charging gun; 1021-cable; 2000-electric vehicle;

[0046] 200-on-board battery; 3000-grid; 4000-photovoltaic equipment; 400-power conversion device; 5000a, 5000b-energy storage equipment;

[0047] 500-battery pack; 501-power converter;

[0048] A-liquid cooling passage of the charging host; B-liquid cooling passage of the charging gun; C-liquid cooling passage of the vehicle battery; D-liquid cooling passage of the battery pack;

[0049] E-liquid cooling passage of power converter; F-liquid cooling passage of condenser; G-liquid cooling passage of photovoltaic device;

[0050] H-liquid cooling passage of evaporator; I-liquid cooling passage of radiator; J-liquid cooling passage where indoor heat exchanger is located;

[0051] K-liquid cooling passage where the electric heater is located;

[0052] v1-first valve port; v2-second valve port; v3-third valve port; v4-fourth valve port; v5-fifth valve port; v6-sixth valve port; v7-seventh valve port;

[0053] v8-eighth valve port;

[0054] 1-valve body assembly; 111-ten-way valve; 112-eight-way valve; 113a-first five-way valve; 113b-second five-way valve; 114a-first four-way valve;

[0055] 114b-second four-way valve; 2-compressor; 3-condenser; 4-evaporator / first evaporator; 5-radiator; 6-fan; 7-indoor heat exchanger;

[0056] 8-electric heater; 9-first bypass valve; 10-second bypass valve; 11-first expansion valve; 12-third bypass valve; 13-dehumidification module;

[0057] 131 - second evaporator; 132 - second expansion valve; 14a - first pump; 14b - second pump. DETAILED DESCRIPTION

[0058] In order to make the purpose, technical scheme and advantages of the present application clearer, the present application will be further described in detail below 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 described 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 illustrated by taking 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 of the embodiments of the present application are only used to illustrate the relative position relationship, and they do not represent the true proportion.

[0059] It should be noted that specific details are described in the following description to facilitate understanding of the present application. However, the present application can be implemented in a variety of other ways different from those described herein, and those skilled in the art can make similar generalizations without violating the connotation of the present application. Therefore, the present application is not limited to the specific implementation methods disclosed below.

[0060] At present, energy storage equipment is widely used in various fields. It can be used in five types of industrial and commercial energy storage scenarios, including small-scale industry and commerce (such as small factories, etc.), medium-sized industry and commerce, large-scale industry and commerce, 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 electric energy.

[0061] Reference Figure 1 and Figure 2 , Figure 1 and Figure 2 These are all system architecture diagrams of a charging station that integrates light, storage, charging, and vehicles provided in an embodiment of the present application.

[0062] Figure 1 The charging equipment for charging electric vehicles is a split type, the charging host 100 and the charging terminal 101 (or charging pile) are each a cabinet, and the charging host 100 and the charging terminal 101 transmit power through power cables. The charging host 100 is electrically connected to each charging terminal 101, and each charging terminal 101 is electrically connected to a charging gun 102 through a power cable, and the charging gun 102 is used to be electrically connected to the electric vehicle 2000.

[0063] The charging host 100 includes a plurality of power conversion devices ( Figure 1 ), multiple power conversion devices can convert AC power from the power grid 3000 into stable DC power and transmit it to the charging terminal 101, and transmit it to the electric vehicle 2000 through the charging gun 102 electrically connected to the charging terminal 101. The multiple power conversion devices may include, for example, an alternating current-direct current (AC-DC) conversion device and a direct current-direct current (DC-DC) conversion device.

[0064] The charging terminal 101 may include a housing, a human-machine interaction interface, a charging control unit, a metering and billing unit, etc., and is used for information exchange, energy transmission, metering and billing, etc. with the electric vehicle 2000.

[0065] Figure 2 The charging device is an integrated device, which integrates a charging host 100 and at least one charging gun 102 electrically connected to the charging host 100. A charging terminal may not be separately provided in the charging station, and the human-machine interface, charging control unit, metering and billing unit, etc. may be directly provided in the charging host 100. The multiple power conversion devices in the charging host 100 convert the AC power from the power grid 3000 into stable DC power, which is then directly transmitted to the electric vehicle 2000 through the charging gun 102.

[0066] exist Figure 1 and Figure 2 The charging station shown may also include a photovoltaic device 4000 and an energy storage device. The photovoltaic device 4000 may include a photovoltaic inverter ( Figure 1 and Figure 2 The photovoltaic inverter is used to convert the electric energy output by the photovoltaic panel. The electric energy output by the photovoltaic device 4000 can be transmitted to the energy storage device 5000a for AC side coupling and stored by the energy storage device 5000a. In addition, the electric energy output by the photovoltaic device 4000 can also be transmitted to the charging host 100. The energy storage device 5000b for DC coupling can couple its stored electric energy to the DC bus of the charging host 100 to transmit its stored electric energy to the charging host 100, so that the charging host 100 provides it to the charging gun 102.

[0067] The energy storage device includes a battery pack and a power converter. During the charging and discharging process of the battery pack, a lot of heat will be generated. In order to ensure the charging and discharging performance and safety of the battery pack, it is usually necessary to cool the battery pack. The power converter of the energy storage device may include an energy storage converter (power conversion system, PCS) or a direct current converter (direct current, DCDC). Among them, the PCS can be used to convert AC power into DC power and then provide it to the battery pack, or to convert DC power from the battery pack into AC power. In the present application, the PCS can specifically be a DC-AC converter or a DC-DC converter, that is, the PCS can include a DC-AC converter, or a DC-DC converter or a control unit, etc.

[0068] In the charging scenario of integrated light, storage, charging and vehicle, in addition to the battery module and power converter in the energy storage device, the power conversion device of the photovoltaic device 4000, the power conversion device of the charging host and the charging terminal, especially the charging gun, will also generate a lot of heat during operation, which will affect the operating reliability and safety of these devices.

[0069] In addition, during the charging process of electric vehicles, the temperature of the on-board battery has a great impact on the charging efficiency. If you want to achieve high-rate charging of the on-board battery, you must solve the temperature control problem of the on-board battery.

[0070] In order to solve the above temperature control problem, it is usually necessary to design a thermal management module. Since liquid cooling technology mainly relies on the circulation of coolant (such as water) in the coolant pipe to achieve heat exchange, its heat exchange efficiency is relatively high. Therefore, more and more thermal management modules are currently designed based on liquid cooling technology. However, at present, a thermal management module is usually set up for energy storage equipment, charging host, charging gun, and electric vehicles respectively, which is not convenient for unified control of thermal management in various scenarios, and the resource utilization rate is low.

[0071] In view of this, the thermal management system provided by this application integrates the thermal management modules of devices with thermal management requirements to improve resource utilization, thereby improving the operating energy efficiency of the thermal management system in various scenarios. In order to facilitate the understanding of the thermal management system provided by this application, it is described in detail in conjunction with specific embodiments.

[0072] Figure 3 A schematic diagram of a thermal management system provided in an embodiment of the present application. Figure 3 As shown, in order to realize the integrated design of multiple thermal management modules, the thermal management system provided in the present application includes multiple passages, a valve body assembly 1 and a heat sink. The multiple passages may, for example, include a liquid cooling passage A of the charging host, a liquid cooling passage B of the charging gun, and a liquid cooling passage C of the vehicle battery. In addition, the above-mentioned multiple passages also include a liquid cooling passage for the energy storage device and a liquid cooling passage where the heat sink is located. It can be understood that in the present application, the multiple passages are all used to circulate coolant, wherein the coolant may be water or ethylene glycol, etc.

[0073] As described above, the energy storage device is used to transmit the stored electric energy to the charging host 100, the charging host 100 transmits the electric energy to the charging gun 102, and the charging gun 102 is used to charge the vehicle battery 200 through the cable 1021. Based on this, it can be understood that the liquid cooling passage of the charging gun 102 is used to dissipate heat for the cable 1021, and the liquid cooling passage of the vehicle battery is used to dissipate heat for the vehicle battery 200.

[0074] The heat sink may be used to cool the coolant flowing in the liquid cooling passage where the heat sink is located through a compressor or natural cooling.

[0075] In addition, the valve body assembly 1 is used to control the conduction of one or more of the multiple passages with the liquid cooling passage where the heat dissipation device is located, so that the multiple passages can be connected in a specific manner, so that the thermal management system can realize multiple working modes, thereby meeting the thermal management requirements in different scenarios.

[0076] In the specific design, you can continue to refer to Figure 3Since the energy storage device includes a battery pack 500 and a power converter 501, the liquid cooling path of the energy storage device may include a liquid cooling path D of the battery pack and a liquid cooling path E of the power converter. The liquid cooling path D of the battery pack is used for heat exchange with the battery pack 500, and the liquid cooling path E of the power converter is used for heat exchange with the power converter 501 of the energy storage device.

[0077] It is worth mentioning that in actual applications, in order to utilize the circulation of coolant in the liquid cooling passage D of the battery pack to achieve heat exchange with the battery pack 500, a heat exchange component such as a cold plate may be provided in the liquid cooling passage D of the battery pack to increase the heat exchange area between the liquid cooling passage D of the battery pack and the battery pack 500. Similarly, a heat exchange component such as a cold plate may also be provided in the liquid cooling passage E of the power converter to increase the heat exchange area between the liquid cooling passage E of the power converter and the power converter 501. In addition, in the following embodiments of the present application, a heat exchange component such as a cold plate may be provided in the corresponding liquid cooling passage according to specific heat exchange needs, which will not be described in detail below.

[0078] exist Figure 3 In the illustrated embodiment, the liquid cooling passage D of the battery pack and the liquid cooling passage E of the power converter are respectively connected to the valve ports of the valve body assembly 1. Specifically, the liquid cooling passage D of the battery pack may be connected to the first valve port v1 and the second valve port v2 of the valve body assembly 1, and the liquid cooling passage E of the power converter may be connected to the ninth valve port v9 and the tenth valve port v10 of the valve body assembly 1.

[0079] The thermal management system provided in the present application further includes a first bypass valve 9, and the liquid cooling passage where the first bypass valve 9 is located is arranged in parallel with the liquid cooling passage E of the power converter. In this way, in a low temperature environment, when the heat dissipation demand of the power converter 501 of the energy storage device is low, the first bypass valve 9 can be opened to allow part of the coolant flowing in the liquid cooling passage E of the power converter to flow through the first bypass valve 9, thereby reducing the amount of coolant flowing through the liquid cooling passage E of the power converter, which is beneficial to improving the energy efficiency of the thermal management system.

[0080] In addition, the liquid cooling passage B of the charging gun and the liquid cooling passage C of the vehicle-mounted battery are connected in series and then connected to the valve port of the valve body assembly 1. Figure 3 In the illustrated embodiment, the liquid cooling passage B of the charging gun and the liquid cooling passage C of the vehicle battery are connected in series and then connected to the first valve port v1 and the second valve port v2 of the valve body assembly 1. In this way, when the vehicle battery 200 is charged by the charging gun through the cable 1021, the temperature of the cable 1021 and the vehicle battery 200 can be managed at the same time to ensure the charging efficiency of the charging gun for charging the vehicle battery 200.

[0081] like Figure 3As shown, in the thermal management system provided by the present application, the liquid cooling passage where the heat dissipation device is located includes the liquid cooling passage F of the condenser, the refrigerant passage of the condenser is connected to the compressor 2, and the refrigerant passage of the condenser is used for heat exchange with the liquid cooling passage F of the condenser. Figure 3 In the embodiment shown, the liquid cooling passage A of the charging host is connected in series with the liquid cooling passage F of the condenser and then connected to the valve port of the valve body assembly 1. Specifically, the liquid cooling passage A of the charging host is connected in series with the liquid cooling passage F of the condenser and then connected to the seventh valve port v7 and the eighth valve port v8 of the valve body assembly. In some other possible embodiments of the present application, the liquid cooling passage A of the charging host can also be connected in parallel with the liquid cooling passage F of the condenser and then connected to the valve port of the valve body assembly 1.

[0082] exist Figure 3 In the thermal management system shown, the liquid cooling passage F of the condenser is located upstream of the liquid cooling passage A of the charging host. In other possible embodiments, the liquid cooling passage A of the charging host may also be located upstream of the liquid cooling passage F of the condenser.

[0083] In addition, the liquid cooling passage where the heat dissipation device is located also includes the liquid cooling passage H of the evaporator. The refrigerant passage H of the evaporator is connected to the compressor 2, and the refrigerant passage of the evaporator is used for heat exchange with the liquid cooling passage H of the evaporator. Figure 3 In the illustrated embodiment, the liquid cooling passage H of the evaporator is connected to the fifth valve port v5 and the sixth valve port v6 of the valve body assembly 1 .

[0084] You can continue to refer to Figure 3 In the present application, the liquid cooling passage where the heat dissipation device is located also includes the liquid cooling passage I of the radiator. The radiator 5 is used to cool the coolant in the liquid cooling passage I of the radiator by natural cooling, and the liquid cooling passage I of the radiator is connected to the third valve port v3 and the fourth valve port v4 of the valve body assembly 1. In order to achieve the heat dissipation function, the radiator 5 can usually be provided with a fan 6. By adjusting the rotation speed of the fan 6, the air flow rate flowing through the surface of the radiator 5 can be adjusted, thereby achieving the adjustment of the heat exchange capacity of the radiator 5.

[0085] In the thermal management system provided in the present application, the plurality of passages further include a liquid cooling passage G of the photovoltaic device, and the liquid cooling passage G of the photovoltaic device is used to dissipate heat for the power conversion device 400 of the photovoltaic device. Figure 3 In the embodiment shown, the liquid cooling passage G of the photovoltaic device is connected in parallel with the liquid cooling passage A of the charging host, and the liquid cooling passage G of the photovoltaic device is also connected in series with the liquid cooling passage F of the condenser. In some other possible embodiments of the present application, the liquid cooling passage A of the charging host can also be connected in series with the liquid cooling passage A of the charging host and then connected in series or in parallel with the liquid cooling passage F of the condenser.

[0086] exist Figure 3In the thermal management system shown, the liquid cooling passage F of the condenser is located upstream of the liquid cooling passage G of the photovoltaic device. In other possible embodiments, the liquid cooling passage G of the photovoltaic device may also be located upstream of the liquid cooling passage F of the condenser.

[0087] like Figure 3 As shown, the thermal management system provided by the present application further includes a second bypass valve 10, and the liquid cooling passage where the second bypass valve 10 is located is connected in parallel with the liquid cooling passage A of the charging host and the liquid cooling passage G of the photovoltaic device. In this way, in a low temperature environment, when the heat dissipation demand of the power conversion device 400 of the charging host 100 and the photovoltaic device is low, the second bypass valve 10 can be opened to allow part of the coolant flowing through the liquid cooling passage F of the condenser to flow through the second bypass valve 10, thereby reducing the amount of coolant flowing through the liquid cooling passage A of the charging host and the liquid cooling passage G of the photovoltaic device, which is beneficial to improving the energy efficiency of the thermal management system.

[0088] It is worth mentioning that in some possible embodiments of the present application, the liquid cooling passage E of the power converter of the energy storage device may also be connected in series or in parallel with the liquid cooling passage F of the condenser, so as to utilize the coolant flowing through the liquid cooling passage F of the condenser to dissipate heat for the power converter 501.

[0089] It is understandable that in practical applications, the thermal management system can also integrate more liquid cooling paths according to specific thermal management requirements. Figure 3 In the embodiment shown, the plurality of passages also include a liquid cooling passage J where the indoor heat exchanger is located. The indoor heat exchanger 7 is used for heat exchange with the indoor environment. The liquid cooling passage J where the indoor heat exchanger is located is connected to the valve port of the valve body assembly 1. Specifically, Figure 3 As shown, the liquid cooling passage J where the indoor heat exchanger is located is connected to the first valve port v1 and the second valve port v2 of the valve body assembly 1. In this way, the valve body assembly 1 can be used to control the conduction between the liquid cooling passage J where the indoor heat exchanger is located and other liquid cooling passages to achieve cooling or heating of the indoor environment. In other words, the thermal management system provided by the present application can be used for indoor heating or cooling, thereby achieving thermal management of the user's living environment.

[0090] In addition, in the thermal management system provided in the embodiment of the present application, the multiple passages may also include a liquid cooling passage K where the electric heater is located. The electric heater 8 is used to heat the coolant in the liquid cooling passage K where the electric heater is located. The liquid cooling passage K where the electric heater is located is connected to the valve port of the valve body assembly 1. Specifically, Figure 3 In the illustrated embodiment, the liquid cooling passage K where the electric heater is located is connected to the first valve port v1 and the second valve port v2 of the valve body assembly 1 .

[0091] You can continue to refer to Figure 3The thermal management system provided in the present application may further include a first expansion valve 11. The compressor 2, the condenser 3, the first expansion valve 11 and the first evaporator 4 are connected to form a first refrigerant circulation loop. In the present application, the refrigerant includes R134a, R1234yf or R744.

[0092] In addition, the thermal management system may further include a third bypass valve 12, which is arranged in parallel with the compressor 2. Thus, when the compressor 2 is operating in a heating state, the third bypass valve 12 is opened to reduce the pressure of the compressor 2, so that the heat generated by the compressor 2 itself can be used for heating. When the compressor 2 is operating in a cooling state, the third bypass valve 12 is closed.

[0093] In addition, the thermal management system may also include a dehumidification module 13, which can be used to reduce the humidity inside the energy storage device to reduce the risk of corrosion of the battery module, each power converter and other electrical components, and improve the safety and reliability of the energy storage device. Among them, the inlet of the dehumidification module 13 can be connected to the outlet of the refrigerant flow channel of the condenser 3, and the outlet of the dehumidification module 13 can be connected to the inlet of the compressor 2, then the compressor 2, the condenser 3 and the dehumidification module 13 can be connected to form a second refrigerant circulation loop. The refrigerant in the second refrigerant circulation loop is the same as the refrigerant in the first refrigerant circulation loop mentioned above, and it may also include R134a, R1234yf, or R744, etc.

[0094] In a specific implementation, the dehumidification module 13 also includes an evaporator and an expansion valve. For ease of distinction, the evaporator in the first refrigerant circulation loop may be referred to as the first evaporator 4. The evaporator in the dehumidification module 13 is referred to as the second evaporator 131, and the expansion valve in the dehumidification module 13 is referred to as the second expansion valve 132, wherein the outlet of the refrigerant flow channel of the condenser 3 is connected to the inlet of the refrigerant flow channel of the second evaporator 131 through the second expansion valve 132, and the outlet of the refrigerant flow channel of the second evaporator 131 is connected to the inlet of the compressor 2. In addition, in the present application, the second evaporator 131 may be, but is not limited to, a microchannel heat exchanger.

[0095] It is understandable that the temperature of the second evaporator 131 will be relatively low during the circulation of the refrigerant in the second refrigerant circulation loop formed by the compressor 2, the condenser 3 and the dehumidification module 13. When the ambient humidity is high and the temperature of the second evaporator 131 is lower than the dew point temperature of the air, the water vapor in the air condenses into water droplets, which are then discharged through the drainage pipe to reduce the humidity in the energy storage device.

[0096] In addition, since the temperature of the second evaporator 131 is relatively low, it can also reduce the temperature of the air in the energy storage device, which is beneficial for placing the battery module of the energy storage device in a relatively low temperature environment. In addition, the dehumidification module 13 may also include a fan ( Figure 3 (not shown), the fan may be disposed near the second evaporator 131 to accelerate the circulation speed of the air flowing through the second evaporator 131, thereby reducing the temperature of the second evaporator 131, which is beneficial to improving the dehumidification effect of the dehumidification module 13.

[0097] In the present application, since the first refrigerant circulation loop and the second refrigerant circulation loop are arranged in parallel, the two refrigerant circulation loops will not affect each other, and the two can work independently. In addition, since the two refrigerant circulation loops share the condenser 3 and the compressor 2, the number of parts used can be effectively reduced, which is conducive to reducing the volume and cost of the thermal management system and facilitating the realization of integrated design. Of course, in other possible embodiments, the first evaporator 4 and the second evaporator 131 can also be arranged in series, so that the first evaporator 4 and the second evaporator 131 can share an expansion valve. For example, only the first expansion valve 11 or the second expansion valve 132 can be set, so that the number of parts used in the thermal management system can be reduced, which is conducive to reducing the manufacturing cost.

[0098] It is worth mentioning that in the embodiment of the present application, the setting of the dehumidification module 13 is independent of the bypass of the compressor 2, that is, the dehumidification module 13 and the third bypass valve 12 at the compressor 2 may not be set at the same time. For example, the third bypass valve 12 is not set at the compressor 2, but the thermal management system is provided with the dehumidification module 13, or the third bypass valve 12 is set at the compressor 2, but the thermal management system is not provided with the dehumidification module 13. In addition, the first bypass valve 9 and the second bypass valve 10 can also be set or not set as needed.

[0099] In addition to the above structure, the thermal management system provided in the embodiment of the present application can also be provided with a pump in each coolant circulation loop, wherein the number and location of the pump can be specifically set according to the specific application scenario, for example, Figure 3 As shown, the thermal management system includes a first pump 14a and a second pump 14b, wherein the first pump 14a is connected to the liquid cooling passage H of the evaporator. In addition, the second pump 14b is arranged in the liquid cooling passage F of the condenser, the second pump 14b is connected to the liquid cooling passage F of the condenser, and the second pump 14b is located upstream of the condenser 3. In other possible embodiments, the number and setting positions of the pumps can be adaptively adjusted according to specific usage needs.

[0100] It is understandable that the thermal management system can control the conduction of each passage in different ways by conducting different valve ports of the valve body assembly 1. Figure 3 In the thermal management system shown, the valve body assembly 1 includes a ten-way valve 111, and the ten-way valve 111 includes ten valve ports. The connection relationship between each liquid cooling passage and each valve port of the ten-way valve 111 is as described above and will not be repeated here.

[0101] It is worth mentioning that Figure 3 This is just an exemplary description of the corresponding connection relationship between each liquid cooling passage and each valve port of the ten-way valve 111. In other possible embodiments of the present application, other corresponding relationships can be used for connection, which will not be introduced one by one here. In this way, every two valve ports of the ten-way valve 111 are connected to a passage, so that the thermal management system can conduct each liquid cooling passage in different ways through the conduction of different valve ports of the valve body assembly 1 to form multiple different circulation loops, so as to provide feasibility conditions for the thermal management system to realize multiple working modes.

[0102] In addition, the valve body assembly 1 is used to establish a connection relationship between various passages so that the heat pipe system can meet the thermal management requirements of different loads. This can not only improve the integration of the thermal management system, but also simplify the connecting pipelines of the thermal management system, and is beneficial to improving the utilization rate of the thermal management system, thereby helping to improve the energy efficiency of the thermal management system.

[0103] After understanding the basic structure of the thermal management system provided in the above-mentioned embodiments of the present application, the connection method of each path of the thermal management system and the thermal management effect that can be achieved are explained for different application scenarios.

[0104] For example, when the ambient temperature is high (such as in summer with high temperature and high humidity), you can refer to Figure 4a , Figure 4a for Figure 3 A schematic diagram of a flow path of a thermal management system in an operating mode is provided. Figure 4a Three circulation loops are shown:

[0105] The first circulation loop is a first refrigerant circulation loop formed by connecting the refrigerant flow path of the compressor 2, the condenser 3, the first expansion valve 11, and the refrigerant flow path of the first evaporator 4. In this scenario, the refrigerant flow path of the first evaporator 4 can be kept at a lower temperature by circulating the refrigerant in the first refrigerant circulation loop.

[0106] The second circulation loop at least includes the liquid cooling passage H of the evaporator, the liquid cooling passage D of the battery pack and the liquid cooling passage E of the power converter, wherein the liquid cooling passage H of the evaporator, the liquid cooling passage D of the battery pack and the liquid cooling passage E of the power converter are connected through the second valve port v2 and the ninth valve port v9, the tenth valve port v10 and the fifth valve port v5, and the sixth valve port v6 and the first valve port v1. In this way, the coolant cooled by the first evaporator 4 can enter the liquid cooling passage D of the battery pack and the liquid cooling passage E of the power converter, thereby realizing the heat dissipation of the battery pack 500 of the energy storage device and the power converter 501 of the energy storage device.

[0107] In addition, it is worth mentioning that due to the Figure 4a In the embodiment shown, the liquid cooling passage C of the vehicle battery and the liquid cooling passage B of the charging gun in series, and the liquid cooling passage J where the indoor heat exchanger is located are arranged in parallel with the liquid cooling passage D of the battery pack, and one or more of the liquid cooling passage C of the vehicle battery and the liquid cooling passage B of the charging gun in series, and the liquid cooling passage J where the indoor heat exchanger is located can also be connected to the liquid cooling passage H of the evaporator. Then the coolant cooled by the first evaporator 4 can also enter one or more of the liquid cooling passage C of the vehicle battery and the liquid cooling passage B of the charging gun in series, and the liquid cooling passage J where the indoor heat exchanger is located, thereby achieving cooling of the vehicle battery 200, the cable 1021 of the charging gun, and the user's living environment.

[0108] It can be understood that stop valves can be set in the liquid cooling passage D of the battery pack, the passage in series of the liquid cooling passage C of the vehicle battery and the liquid cooling passage B of the charging gun, and the liquid cooling passage J where the indoor heat exchanger is located. In this way, the corresponding stop valves can be opened or closed according to specific needs to connect the corresponding liquid cooling passage with the liquid cooling passage H of the evaporator, which is beneficial to improving the energy efficiency of the thermal management system.

[0109] The third circulation loop includes the liquid cooling passage I of the radiator and the liquid cooling passage F of the condenser, wherein the liquid cooling passage I of the radiator and the liquid cooling passage F of the condenser are connected through the fourth valve port v4 and the seventh valve port v7, and the eighth valve port v8 and the third valve port v3, which are connected to each other. In this way, the coolant cooled by the radiator 5 can enter the liquid cooling passage F of the condenser, thereby realizing the cooling of the refrigerant in the refrigerant pipeline of the condenser 3.

[0110] Furthermore, since the liquid cooling passage G of the photovoltaic device and the liquid cooling passage A of the charging host are connected in series with the liquid cooling passage F of the condenser, the cooled coolant entering the liquid cooling passage F of the condenser can also enter the liquid cooling passage G of the photovoltaic device and the liquid cooling passage A of the charging host, thereby realizing the cooling of the power conversion device 400 of the photovoltaic device and the charging host 100.

[0111] In addition, the liquid cooling passage G of the photovoltaic device and the liquid cooling passage A of the charging host can be connected in series with the stop valve, so that the corresponding stop valve can be opened or closed according to specific needs to connect the liquid cooling passage G of the photovoltaic device and the liquid cooling passage A of the charging host to the third circulation loop, which is beneficial to improving the energy efficiency of the thermal management system.

[0112] In addition, in a scenario where the ambient temperature is high (such as high temperature and high humidity in summer), the radiator 5 can also be used to dissipate heat from the power converter 501 of the energy storage device. Figure 4b , Figure 4b for Figure 3 A schematic diagram of the flow path of another operating mode of the thermal management system is provided. Figure 4bFour circulation loops are shown:

[0113] The first circulation loop is Figure 4a The first circulation loop shown is the same and will not be described in detail here.

[0114] The second circulation loop at least includes the liquid cooling passage H of the evaporator and the liquid cooling passage D of the battery pack, wherein the liquid cooling passage H of the evaporator and the liquid cooling passage D of the battery pack are connected through the second valve port v2 and the fifth valve port v5, and the sixth valve port v6 and the first valve port v1, which are connected to each other. In this way, the coolant cooled by the first evaporator 4 can enter the liquid cooling passage D of the battery pack, thereby realizing heat dissipation of the battery pack 500 of the energy storage device.

[0115] In addition, one or more of the liquid cooling passage C of the vehicle battery and the liquid cooling passage B of the charging gun connected in series and the liquid cooling passage J where the indoor heat exchanger is located can also be connected to the liquid cooling passage H of the evaporator. Then the coolant cooled by the first evaporator 4 can also enter one or more of the liquid cooling passage C of the vehicle battery and the liquid cooling passage B of the charging gun connected in series and the liquid cooling passage J where the indoor heat exchanger is located, thereby achieving cooling of the vehicle battery 200, the cable 1021 of the charging gun and the user's living environment.

[0116] The third circulation loop is Figure 4a The third circulation loop shown is the same and will not be described in detail here.

[0117] The fourth circulation loop includes the liquid cooling passage I of the radiator and the liquid cooling passage E of the power converter, wherein the liquid cooling passage I of the radiator and the liquid cooling passage E of the power converter are connected through the fourth valve port v4 and the ninth valve port v9, and the tenth valve port v10 and the third valve port v3, which are connected to each other. In this way, the coolant cooled by the radiator 5 can enter the liquid cooling passage E of the power converter, thereby realizing the cooling of the power converter 501.

[0118] In addition, when the ambient temperature is more suitable (such as in spring or autumn), the operation mode of the thermal management system can refer to Figure 4c , Figure 4c A schematic diagram of a flow path of another operating mode provided in an embodiment of the present application. Figure 4c A cycle loop is shown:

[0119] The circulation loop at least includes a liquid cooling passage D of the battery pack, a liquid cooling passage E of the power converter, a liquid cooling passage I of the radiator, and a liquid cooling passage F of the condenser. Among them, these liquid cooling passages are connected through the second valve port v2 and the ninth valve port v9, the tenth valve port v10 and the seventh valve port v7, the eighth valve port v8 and the third valve port v3, and the fourth valve port v4 and the first valve port v1. In this way, the coolant cooled by the radiator 5 can flow through the liquid cooling passage D of the battery pack, the liquid cooling passage E of the power converter, and the liquid cooling passage F of the condenser in sequence, thereby realizing the heat dissipation of the battery pack 500 of the energy storage device and the power converter 501 of the energy storage device.

[0120] When the cable 1021 of the charging gun also needs heat dissipation, the liquid cooling passage B of the charging gun can be connected to the above-mentioned circulation loop. Then, the coolant flowing through the radiator 5 can cool the cable 1021 of the charging gun when entering the liquid cooling passage B of the charging gun.

[0121] In addition, when the charging host 100, the power conversion device 400 of the photovoltaic equipment and the vehicle battery 200 have heat dissipation requirements, the liquid cooling passage A of the charging host, the liquid cooling passage G of the photovoltaic equipment and the liquid cooling passage C of the vehicle battery can also be connected to the above-mentioned circulation loop, so that the coolant cooled by the radiator 5 can enter each liquid cooling passage, thereby achieving heat dissipation of the charging host 100, the power conversion device 400 of the photovoltaic equipment and the vehicle battery 200.

[0122] Since the temperature of the user's living environment is relatively comfortable in the scenario where the ambient temperature is relatively suitable, there is usually no need for thermal management. Therefore, in this scenario, the stop valve of the liquid cooling passage J where the indoor heat exchanger is located can be closed, and the liquid cooling passage J where the indoor heat exchanger is located will not be connected to the above circulation loop, which is conducive to improving the energy efficiency of the thermal management system.

[0123] When the ambient temperature is low (such as in winter), the operation mode of the thermal management system can refer to Figure 4d , Figure 4d for Figure 3 A flow path schematic diagram of another operating mode of a thermal management system is provided. Figure 4d A cycle loop is shown:

[0124] The circulation loop at least includes a liquid cooling passage D of the battery pack, a liquid cooling passage E of the power converter, and a liquid cooling passage F of the condenser, wherein the liquid cooling passage D of the battery pack, the liquid cooling passage E of the power converter, and the liquid cooling passage F of the condenser are connected through the second valve port v2 and the seventh valve port v7, the eighth valve port v8 and the ninth valve port v9, and the tenth valve port v10 and the first valve port v1. Then the heat generated by the power converter 501 of the energy storage device can be transferred to the coolant of the circulation loop through the liquid cooling passage E of the power converter.

[0125] In addition, when the liquid cooling passage G of the photovoltaic device, the liquid cooling passage A of the charging host, and the liquid cooling passage B of the charging gun are connected to the above-mentioned circulation loop, the heat generated by the power conversion device 400 of the photovoltaic device, the heat generated by the charging host 100, and the heat generated by the cable 1021 of the charging gun can be transferred to the coolant of the circulation loop through their respective liquid cooling passages. The heated coolant flows to the liquid cooling passage D of the battery pack and can be used to heat the battery pack 500 of the energy storage device, thereby realizing efficient utilization of heat.

[0126] It is understandable that when the vehicle battery 200 needs to be heated during the charging process, the liquid cooling passage C of the vehicle battery can also be connected to the above-mentioned circulation loop to utilize the heat generated by one or more of the power converter 501 of the energy storage device, the condenser 3, the power conversion device 400 of the photovoltaic device, the charging host 100 and the cable 1021 of the charging gun to heat the vehicle battery 200.

[0127] In addition, when the temperature of the user's living environment is low, the liquid cooling passage J where the indoor heat exchanger is located can also be connected to the above-mentioned circulation loop to use the heat generated by one or more of the power converter 501 of the energy storage device, the condenser 3, the power conversion device 400 of the photovoltaic device, the charging host 100 and the cable 1021 of the charging gun to heat the user's living environment.

[0128] In the present application, the electric heater 8 can also be turned on or off according to specific heating needs. The valve body assembly 1 is used to control one or more of the liquid cooling passage D of the battery pack, the liquid cooling passage C of the vehicle battery, and the liquid cooling passage J where the indoor heat exchanger is located to be connected to the liquid cooling passage K where the electric heater is located, so that the coolant in the connected liquid cooling passages is heated by the electric heater 8 to achieve heating of the corresponding equipment.

[0129] In practical applications, when the ambient temperature is low, the first expansion valve 11 and the compressor 2 can be set to an open state as needed, that is, the condenser has a higher temperature through the working principle of the heat pump, so that the condenser is used to provide heat energy. Figure 4e , Figure 4e for Figure 3 A flow path schematic diagram of another operating mode of a thermal management system is provided. Figure 4e Three circulation loops are shown:

[0130] The first circulation loop is a first refrigerant circulation loop formed by connecting the compressor 2 , the refrigerant channel of the condenser 3 , the first expansion valve 11 , and the refrigerant channel of the first evaporator 4 .

[0131] The second loop and Figure 4dHowever, in the second circulation loop, the heat generated by the condenser 3 can also be transferred to the coolant through the heat exchange between the refrigerant channel of the condenser 3 and the liquid cooling channel of the condenser, thereby meeting the heat demand of the battery pack 500 of the energy storage device, the vehicle battery 200 and the user's living environment.

[0132] The third circulation loop includes the liquid cooling passage I of the radiator and the liquid cooling passage H of the evaporator, and the liquid cooling passage I of the radiator and the liquid cooling passage H of the evaporator are connected through the sixth valve port v6 and the third valve port v3, and the fourth valve port v4 and the fifth valve port v5, which are connected to each other. In this way, the temperature of the first evaporator 4 can be increased through the heat exchange between the radiator 5 and the first evaporator 4, thereby increasing the temperature of the condenser 3.

[0133] The above is only for this application Figure 3 The thermal management system shown provides some exemplary descriptions of the operating modes that can be achieved. On this basis, the different valve ports of the ten-way valve 111 can be connected to open the corresponding liquid cooling passages, so that the thermal management system can work in the corresponding operating mode. They are not listed one by one here, but they should all be understood to fall within the scope of protection of this application.

[0134] In the above embodiment, the valve body assembly includes a ten-way valve 111, so that each liquid cooling passage is connected in different forms by connecting different valve ports of the ten-way valve 111. In practical applications, the specific setting of the valve body assembly 1 can also be adjusted according to specific needs. For example, refer to Figure 5 , Figure 5 Another schematic diagram of the structure of the thermal management system provided in the embodiment of the present application. Figure 5 The valve body assembly 1 of the thermal management system shown includes an eight-way valve 112, and the eight-way valve 112 includes eight valve ports for connecting to various passages, namely the first valve port v1, the second valve port v2, the third valve port v3, the fourth valve port v4, the fifth valve port v5, the sixth valve port v6, the seventh valve port v7 and the eighth valve port v8.

[0135] Can be referred to together Figure 3 and Figure 5 ,and Figure 3 Compared with the embodiment shown in Figure 5 In the thermal management system shown in FIG. 1 , the liquid cooling passage E of the power converter is connected in series with the liquid cooling passage D of the battery pack. Figure 5In the illustrated embodiment, the liquid cooling passage E of the power converter is disposed downstream of the liquid cooling passage D of the battery pack. In other possible embodiments, the liquid cooling passage E of the power converter may also be disposed upstream of the liquid cooling passage D of the battery pack. In this case, the present application does not limit the relative positions of the liquid cooling passage E of the power converter and the liquid cooling passage D of the battery pack.

[0136] Figure 5 Other structures of the thermal management system shown can refer to Figure 3 The thermal management system shown is set up and will not be described in detail here.

[0137] Next, for different application scenarios, Figure 5 The connection method of each path of the thermal management system shown and the thermal management effect that can be achieved are explained.

[0138] When the ambient temperature is high (such as high temperature and high humidity in summer), you can refer to Figure 6a , Figure 6a for Figure 5 A schematic diagram of a flow path of a thermal management system in an operating mode is provided. Figure 6a Three circulation loops are shown:

[0139] The first circulation loop is a first refrigerant circulation loop formed by connecting the refrigerant flow path of the compressor 2, the condenser 3, the first expansion valve 11, and the refrigerant flow path of the first evaporator 4. In this scenario, the refrigerant flow path of the first evaporator 4 can be kept at a lower temperature by circulating the refrigerant in the first refrigerant circulation loop.

[0140] The second circulation loop at least includes a passage in which the liquid cooling passage D of the battery pack is connected in series with the liquid cooling passage E of the power converter and a liquid cooling passage H of the evaporator, wherein the passage in which the liquid cooling passage D of the battery pack is connected in series with the liquid cooling passage E of the power converter and the liquid cooling passage H of the evaporator are connected through the second valve port v2 and the fifth valve port v5, and the sixth valve port v6 and the first valve port v1. In this way, the coolant cooled by the first evaporator 4 can enter the liquid cooling passage D of the battery pack and the liquid cooling passage E of the power converter, thereby realizing heat dissipation of the battery pack 500 of the energy storage device and the power converter 501 of the energy storage device.

[0141] In addition, it is worth mentioning that since the liquid cooling passage D of the battery pack is connected in series with the liquid cooling passage E of the power converter, the liquid cooling passage C of the vehicle battery is connected in series with the liquid cooling passage B of the charging gun, and the liquid cooling passage J where the indoor heat exchanger is located is arranged in parallel, one or more of the liquid cooling passage C of the vehicle battery, the liquid cooling passage B of the charging gun, and the liquid cooling passage J where the indoor heat exchanger is located may also be connected to the liquid cooling passage H of the evaporator, so as to utilize the coolant cooled by the first evaporator 4 to achieve cooling of the vehicle battery 200, the cable 1021 of the charging gun, and the user's living environment.

[0142] It can be understood that stop valves can be set in the liquid cooling passage D of the battery pack and the liquid cooling passage E of the power converter, the liquid cooling passage C of the vehicle battery and the liquid cooling passage B of the charging gun, and the liquid cooling passage J where the indoor heat exchanger is located. In this way, the corresponding stop valves can be opened or closed according to specific needs to connect the corresponding passages to the second circulation loop, which is beneficial to improving the energy efficiency of the thermal management system.

[0143] The third circulation loop includes the liquid cooling passage I of the radiator and the liquid cooling passage F of the condenser, wherein the liquid cooling passage I of the radiator and the liquid cooling passage F of the condenser are connected through the fourth valve port v4 and the seventh valve port v7, and the eighth valve port v8 and the third valve port v3, which are connected to each other. In this way, the coolant cooled by the radiator 5 can enter the liquid cooling passage F of the condenser, thereby realizing the cooling of the refrigerant in the refrigerant pipeline of the condenser 3.

[0144] It is worth mentioning that since the liquid cooling passage G of the photovoltaic device and the liquid cooling passage A of the charging host are connected in parallel and in series with the liquid cooling passage F of the condenser, the coolant cooled by the radiator 5 can also enter the liquid cooling passage G of the photovoltaic device and the liquid cooling passage A of the charging host to achieve cooling of the power conversion device 400 of the photovoltaic device and the cable 1021 of the charging gun. In addition, the liquid cooling passage G of the photovoltaic device and the liquid cooling passage A of the charging host can both be connected in series with a stop valve, so that the corresponding stop valve can be opened or closed according to specific needs to connect the liquid cooling passage G of the photovoltaic device and the liquid cooling passage A of the charging host to the third circulation loop, which is conducive to improving the energy efficiency of the thermal management system.

[0145] In addition, when the ambient temperature is more suitable (such as in spring or autumn), the operation mode of the thermal management system can refer to Figure 6b , Figure 6b for Figure 5 A schematic diagram of the flow path of another operating mode of the thermal management system is provided. Figure 6b A cycle loop is shown:

[0146] The circulation loop at least includes a liquid cooling passage D of the battery pack and a liquid cooling passage E of the power converter connected in series, a liquid cooling passage I of the radiator, and a liquid cooling passage F of the condenser. Among them, these liquid cooling passages are connected through the second valve port v2 and the seventh valve ports v7, v8 and the third valve port v3, and the fourth valve port v4 and the first valve port v1. In this way, the coolant cooled by the radiator 5 can flow through the liquid cooling passage D of the battery pack, the liquid cooling passage E of the power converter, and the liquid cooling passage F of the condenser in sequence, thereby realizing heat dissipation of the battery pack 500 of the energy storage device and the power converter 501 of the energy storage device.

[0147] When the charging gun cable 1021 and the vehicle battery 200 also have heat dissipation requirements, the liquid cooling passage B of the charging gun and the liquid cooling passage C of the vehicle battery can be connected to the above-mentioned circulation loop to utilize the coolant cooled by the radiator 5 to cool the charging gun cable 1021 and the vehicle battery 200.

[0148] In addition, when the charging host 100 and the power conversion device 400 of the photovoltaic device have heat dissipation requirements, the liquid cooling passage A of the charging host and the liquid cooling passage G of the photovoltaic device can also be connected to the above-mentioned circulation loop so that the coolant cooled by the radiator 5 can enter each liquid cooling passage, thereby achieving heat dissipation of the charging host 100 and the power conversion device 400 of the photovoltaic device.

[0149] Since the temperature of the user's living environment is relatively comfortable in the scenario where the ambient temperature is relatively suitable, there is usually no need for thermal management. Therefore, in this scenario, the stop valve of the liquid cooling passage J where the indoor heat exchanger is located can be closed, and the liquid cooling passage J where the indoor heat exchanger is located will not be connected to the above circulation loop, which is conducive to improving the energy efficiency of the thermal management system.

[0150] When the ambient temperature is low (such as in winter), the operation mode of the thermal management system can refer to Figure 6c , Figure 6c for Figure 5 A flow path schematic diagram of another operating mode of a thermal management system is provided. Figure 6c Three circulation loops are shown:

[0151] The first circulation loop is a first refrigerant circulation loop formed by connecting the compressor 2, the refrigerant channel of the condenser 3, the first expansion valve 11 and the refrigerant channel of the first evaporator 4. That is, the condenser has a higher temperature through the working principle of the heat pump, so that the condenser 3 is used to provide heat energy.

[0152] The second circulation loop at least includes a liquid cooling passage D of the battery pack and a liquid cooling passage E of the power converter in series, and a liquid cooling passage F of the condenser, wherein these passages are connected through the second valve port v2 and the seventh valve port v7, and the eighth valve port v8 and the first valve port v1. Then the heat generated by the power converter 501 of the energy storage device can be transferred to the coolant of the circulation loop through the liquid cooling passage E of the power converter, and the heat generated by the condenser 3 can be transferred to the coolant of the circulation loop through the liquid cooling passage F of the condenser.

[0153] In addition, when the liquid cooling passage G of the photovoltaic device, the liquid cooling passage A of the charging host, and the liquid cooling passage B of the charging gun are connected to the above-mentioned circulation loop, the heat generated by the power conversion device 400 of the photovoltaic device, the heat generated by the charging host 100, and the heat generated by the cable 1021 of the charging gun can be transferred to the coolant of the circulation loop through their respective liquid cooling passages. The heated coolant flows to the liquid cooling passage D of the battery pack and can be used to heat the battery pack 500 of the energy storage device, thereby realizing efficient utilization of heat.

[0154] In addition, in the present application, the electric heater 8 can be turned on or off according to specific heating needs.

[0155] It is understandable that when the vehicle battery 200 needs to be heated during the charging process, the liquid cooling passage C of the vehicle battery can also be connected to the above-mentioned circulation loop to utilize the heat generated by one or more of the power converter 501 of the energy storage device, the condenser 3, the power conversion device 400 of the photovoltaic device, the charging host 100 and the cable 1021 of the charging gun to heat the vehicle battery 200.

[0156] In addition, when the temperature of the user's living environment is low, the liquid cooling passage J where the indoor heat exchanger is located can also be connected to the above-mentioned circulation loop to use the heat generated by one or more of the power converter 501 of the energy storage device, the condenser 3, the power conversion device 400 of the photovoltaic device, the charging host 100 and the cable 1021 of the charging gun to heat the user's living environment.

[0157] The third circulation loop includes the liquid cooling passage I of the radiator and the liquid cooling passage H of the evaporator, and the liquid cooling passage I of the radiator and the liquid cooling passage H of the evaporator are connected through the fourth valve port v4 and the fifth valve port v5, and the sixth valve port v6 and the third valve port v3. In this way, the temperature of the first evaporator 4 can be increased through the heat exchange between the radiator 5 and the first evaporator 4, thereby increasing the temperature of the condenser 3.

[0158] The above is only for this application Figure 5The thermal management system shown provides some exemplary descriptions of the operating modes that can be achieved. On this basis, the different valve ports of the eight-way valve 112 can be connected to connect the corresponding passages, so that the thermal management system can operate in the corresponding operating mode. They are not listed one by one here, but they should all be understood to fall within the scope of protection of this application.

[0159] In the present application, the valve body assembly 1 can be configured as a multi-way valve or other possible forms. Figure 7 , Figure 7 Another structural schematic diagram of a thermal management system provided in an embodiment of the present application. In this embodiment, the valve body assembly includes two five-way valves, which can be named as the first five-way valve 113a and the second five-way valve 113b for easy distinction. The first five-way valve 113a includes a first valve port v1, a second valve port v2, a third valve port v3, a fourth valve port v4, and a fifth valve port v5, and the second five-way valve 113b includes a sixth valve port v6, a seventh valve port v7, an eighth valve port v8, a ninth valve port v9, and a tenth valve port v10.

[0160] Compared with the above embodiment, Figure 7 In the thermal management system shown, the conduction of the corresponding liquid cooling passage is achieved by conducting the different valve ports of the two five-way valves. Figure 7 The other structures of the thermal management system shown can be arranged with reference to the thermal management system shown in any of the above embodiments, and will not be described in detail here.

[0161] Next, for different application scenarios, Figure 7 The connection method of each path of the thermal management system shown and the thermal management effect that can be achieved are explained.

[0162] When the ambient temperature is high (such as high temperature and high humidity in summer), you can refer to Figure 8a , Figure 8a for Figure 7 A schematic diagram of a flow path of a thermal management system in an operating mode is provided. Figure 8a Four circulation loops are shown:

[0163] The first circulation loop is a first refrigerant circulation loop formed by connecting the refrigerant flow path of the compressor 2, the condenser 3, the first expansion valve 11, and the refrigerant flow path of the first evaporator 4. In this scenario, the refrigerant flow path of the first evaporator 4 can be kept at a lower temperature by circulating the refrigerant in the first refrigerant circulation loop.

[0164] The second circulation loop at least includes the liquid cooling passage D of the battery pack and the liquid cooling passage H of the evaporator, wherein the liquid cooling passage D of the battery pack and the liquid cooling passage H of the evaporator are connected through the sixth valve port v6 and the eighth valve port v8, and the third valve port v3 and the first valve port v1, which are connected to each other. In this way, the coolant cooled by the first evaporator 4 can enter the liquid cooling passage D of the battery pack, thereby realizing the heat dissipation of the battery pack 500 of the energy storage device.

[0165] In addition, it is worth mentioning that due to the Figure 8a In the embodiment shown, the liquid cooling passage C of the vehicle battery and the liquid cooling passage B of the charging gun in series, and the liquid cooling passage J where the indoor heat exchanger is located are arranged in parallel with the liquid cooling passage D of the battery pack, and one or more of the liquid cooling passage C of the vehicle battery and the liquid cooling passage B of the charging gun in series, and the liquid cooling passage J where the indoor heat exchanger is located can also be connected to the liquid cooling passage H of the evaporator. Then the coolant cooled by the first evaporator 4 can also enter one or more of the liquid cooling passage C of the vehicle battery and the liquid cooling passage B of the charging gun in series, and the liquid cooling passage J where the indoor heat exchanger is located, thereby achieving cooling of the vehicle battery 200, the cable 1021 of the charging gun, and the user's living environment.

[0166] It can be understood that stop valves can be set in the liquid cooling passage D of the battery pack, the passage in series of the liquid cooling passage C of the vehicle battery and the liquid cooling passage B of the charging gun, and the liquid cooling passage J where the indoor heat exchanger is located. In this way, the corresponding stop valves can be opened or closed according to specific needs to connect the corresponding liquid cooling passage with the liquid cooling passage H of the evaporator, which is beneficial to improving the energy efficiency of the thermal management system.

[0167] The third circulation loop includes the liquid cooling passage I of the radiator and the liquid cooling passage F of the condenser, wherein the liquid cooling passage I of the radiator and the liquid cooling passage F of the condenser are connected through the second valve port v2 and the fourth valve port v4, and the ninth valve port v9 and the seventh valve port v7, which are connected to each other. In this way, the coolant cooled by the radiator 5 can enter the liquid cooling passage F of the condenser, thereby realizing the cooling of the refrigerant in the refrigerant pipeline of the condenser 3.

[0168] Furthermore, since the liquid cooling passage G of the photovoltaic device and the liquid cooling passage A of the charging host are connected in series with the liquid cooling passage F of the condenser, the cooled coolant entering the liquid cooling passage F of the condenser can also enter the liquid cooling passage G of the photovoltaic device and the liquid cooling passage A of the charging host, thereby realizing the cooling of the power conversion device 400 of the photovoltaic device and the charging host 100.

[0169] It is worth mentioning that the liquid cooling passage G of the photovoltaic device and the liquid cooling passage A of the charging host can be connected in series with the stop valve, so that the corresponding stop valve can be opened or closed according to specific needs to connect the liquid cooling passage G of the photovoltaic device and the liquid cooling passage A of the charging host to the third circulation loop, which is beneficial to improve the energy efficiency of the thermal management system.

[0170] The fourth circulation loop includes the liquid cooling passage I of the radiator and the liquid cooling passage E of the power converter, wherein the liquid cooling passage I of the radiator and the liquid cooling passage E of the power converter are connected through the second valve port v2 and the fifth valve port v5 and the tenth valve port v10 and the seventh valve port v7, which are connected to each other. In this way, the coolant cooled by the radiator 5 can enter the liquid cooling passage E of the power converter, thereby realizing the cooling of the power converter 501 of the energy storage device.

[0171] In addition, when the ambient temperature is more suitable (such as in spring or autumn), the operation mode of the thermal management system can refer to Figure 8b , Figure 8b for Figure 7 A schematic diagram of the flow path of another operating mode of the thermal management system is provided. Figure 8b A cycle loop is shown:

[0172] The one circulation loop at least includes the liquid cooling passage D of the battery pack, the liquid cooling passage I of the radiator, the liquid cooling passage H of the evaporator, and the liquid cooling passage E of the power converter. In this way, the coolant cooled by the radiator 5 can enter the liquid cooling passage D of the battery pack, the liquid cooling passage H of the evaporator, and the liquid cooling passage E of the power converter, thereby achieving heat dissipation for the battery pack 500 of the energy storage device and the power converter 501 of the energy storage device.

[0173] It is worth mentioning that in this scenario, the compressor is in the off state, and the liquid cooling passage H of the evaporator is only used for the circulation of the cooling liquid, that is, the first evaporator 4 is not used for refrigeration.

[0174] In addition, when the cable 1021 of the charging gun and the vehicle battery 200 have heat dissipation requirements, the liquid cooling passage B of the charging gun and the liquid cooling passage C of the vehicle battery can also be connected to the above-mentioned circulation loop, so that the coolant cooled by the radiator 5 can enter the liquid cooling passage B of the charging gun and the liquid cooling passage C of the vehicle battery, thereby achieving heat dissipation of the cable 1021 of the charging gun and the vehicle battery 200.

[0175] Since the temperature of the user's living environment is relatively comfortable in the scenario where the ambient temperature is relatively suitable, there is usually no need for thermal management. Therefore, in this scenario, the stop valve of the liquid cooling loop J where the indoor heat exchanger is located can be closed, and the liquid cooling loop J where the indoor heat exchanger is located will not be connected to the above circulation loop, which is conducive to improving the energy efficiency of the thermal management system.

[0176] When the ambient temperature is low (such as in winter), the operation mode of the thermal management system can refer to Figure 8c , Figure 8c for Figure 7 A flow path schematic diagram of another operating mode of a thermal management system is provided. Figure 8c A cycle loop is shown:

[0177] The one circulation loop at least includes a liquid cooling passage D of the battery pack and a liquid cooling passage E of the power converter. The heat generated by the power converter 501 of the energy storage device can be transferred to the coolant of the circulation loop through the liquid cooling passage E of the power converter, and the heated coolant enters the liquid cooling passage D of the battery pack and can be used to heat the battery pack 500 of the energy storage device, thereby realizing efficient use of heat.

[0178] In addition, in the present application, the electric heater 8 can be turned on or off according to specific heating needs.

[0179] It is understandable that when the vehicle battery 200 needs to be heated during the charging process, the liquid cooling passage C of the vehicle battery can also be connected to the above-mentioned circulation loop to utilize the heat generated by the power converter 501 of the energy storage device and the heat generated by the cable 1021 of the charging gun to heat the vehicle battery 200.

[0180] In addition, when the temperature of the user's living environment is low, the liquid cooling loop J where the indoor heat exchanger is located can also be connected to the above-mentioned circulation loop to use the heat generated by the power converter 501 of the energy storage device and the heat generated by the cable 1021 of the charging gun to heat the user's living environment.

[0181] exist Figure 8c In the operation mode shown, the compressor 2 is in the off state. In actual application, when the ambient temperature is low, the first expansion valve 11 and the compressor 2 can be set to the on state as needed, that is, the condenser 3 has a higher temperature through the working principle of the heat pump, so that the condenser 3 provides heat energy. Figure 8d , Figure 8d for Figure 7 A flow path schematic diagram of another operating mode of a thermal management system is provided. Figure 8d Four circulation loops are shown:

[0182] The first circulation loop is a first refrigerant circulation loop formed by connecting the compressor 2 , the refrigerant channel of the condenser 3 , the first expansion valve 11 , and the refrigerant channel of the first evaporator 4 .

[0183] The second circulation loop includes at least the liquid cooling passage D of the battery pack and the liquid cooling passage F of the condenser, and the liquid cooling passage D of the battery pack and the liquid cooling passage F of the condenser are connected through the first valve port v1 and the fourth valve port v4, and the ninth valve port v9 and the sixth valve port v6. In this way, the heat generated by the condenser 3 can be transferred to the coolant in the second circulation loop, and the coolant flowing to the liquid cooling passage D of the battery pack can be used to meet the heating requirements of the battery pack 500 of the energy storage device.

[0184] In addition, when the liquid cooling passage G of the photovoltaic device, the liquid cooling passage A of the charging host and the liquid cooling passage B of the charging gun are also connected to the second circulation loop, the heat generated by the power conversion device 400 of the photovoltaic device, the heat generated by the charging host 100 and the heat generated by the cable 1021 of the charging gun can also be used to heat the battery pack 500 of the energy storage device.

[0185] The third circulation loop includes at least the liquid cooling passage D of the battery pack and the liquid cooling passage E of the power converter, and the liquid cooling passage D of the battery pack and the liquid cooling passage E of the power converter are connected through the tenth valve port v10 and the sixth valve port v6 and the first valve port v1 and the fifth valve port v5. In this way, the heat generated by the power converter 501 of the energy storage device can be used to heat the battery pack 500 of the energy storage device.

[0186] The fourth circulation loop includes the liquid cooling passage H of the evaporator and the liquid cooling passage I of the radiator, which are connected through the third valve port v3 and the second valve port v2 and the seventh valve port v7 and the eighth valve port v8. In this way, the temperature of the first evaporator 4 can be increased through the heat exchange between the radiator 5 and the first evaporator 4, thereby increasing the temperature of the condenser 3.

[0187] In addition, in the present application, the electric heater 8 can be turned on or off according to specific heating needs.

[0188] It is understandable that when the vehicle battery 200 needs to be heated during the charging process, the liquid cooling passage C of the vehicle battery can also be connected to the second circulation loop and the third circulation loop to utilize the heat generated by the condenser 3, the heat generated by the power converter 501 of the energy storage device, the heat generated by the power conversion device 400 of the photovoltaic device, the heat generated by the charging host 100, and the heat generated by the cable 1021 of the charging gun to heat the vehicle battery 200.

[0189] In addition, when the temperature of the user's living environment is low, the liquid cooling loop J where the indoor heat exchanger is located can also be connected to the second circulation loop and the third circulation loop mentioned above to achieve heating of the user's living environment.

[0190] Figure 8e for Figure 7A flow path schematic diagram of another operating mode of a thermal management system is provided. Figure 8e Four circulation loops are shown:

[0191] The first circulation loop is a first refrigerant circulation loop formed by connecting the compressor 2 , the refrigerant channel of the condenser 3 , the first expansion valve 11 , and the refrigerant channel of the first evaporator 4 .

[0192] The second loop is the same as above Figure 8d The second circulation loop of the illustrated embodiment is the same and will not be described in detail here.

[0193] The third circulation loop includes the liquid cooling passage I of the radiator and the liquid cooling passage E of the power converter, and the liquid cooling passage I of the radiator and the liquid cooling passage E of the power converter are connected through the fifth valve port v5 and the second valve port v2, and the seventh valve port v7 and the tenth valve port v10. In this way, the radiator 5 can be used to dissipate heat from the liquid cooling passage E of the power converter, thereby achieving heat dissipation of the power converter 501 of the energy storage device.

[0194] The fourth loop is similar to the above Figure 8d The fourth circulation loop of the illustrated embodiment is the same and will not be described in detail here.

[0195] In addition, the liquid cooling passage C of the vehicle battery and the liquid cooling loop J where the indoor heat exchanger is located can be selectively connected to the second circulation loop according to specific heating requirements, which will not be introduced in detail here.

[0196] Figure 8f for Figure 7 A flow path schematic diagram of another operating mode of a thermal management system is provided. Figure 8f A cycle loop is shown:

[0197] The one circulation loop includes a liquid cooling passage D of the battery pack, a liquid cooling passage K of the electric heater, and a liquid cooling passage H of the evaporator. In this embodiment, the compressor 2 is in an off state, but the electric heater 8 is in an on state, that is, in this embodiment, the battery pack 500 of the energy storage device is heated by the electric heater 8.

[0198] In addition, the liquid cooling passage C of the vehicle battery and the liquid cooling loop J where the indoor heat exchanger is located can be selectively connected to the above circulation loop according to specific heating requirements, which will not be introduced in detail here.

[0199] Fig. 9Another structural schematic diagram of a thermal management system provided in an embodiment of the present application. In this embodiment, the valve body assembly includes two four-way valves, which can be named as a first four-way valve 114a and a second four-way valve 114b for easy distinction. The first four-way valve 114a includes a first valve port v1, a second valve port v2, a third valve port v3, and a fourth valve port v4, and the second four-way valve 114b includes a fifth valve port v5, a sixth valve port v6, a seventh valve port v7, and an eighth valve port v8.

[0200] With the above Figure 7 The thermal management system shown is compared to the Fig. 9 In the thermal management system shown, the liquid cooling passage D of the battery pack is connected in series with the liquid cooling passage E of the power converter and then connected to the valve port of the valve body assembly 1, which is conducive to simplifying the structure of the thermal management system.

[0201] Next, for different application scenarios, Fig. 9 The connection method of each path of the thermal management system shown and the thermal management effect that can be achieved are explained.

[0202] When the ambient temperature is high (such as high temperature and high humidity in summer), you can refer to Fig.10a , Fig.10a for Fig. 9 A schematic diagram of a flow path of a thermal management system in an operating mode is provided. Fig.10a Three circulation loops are shown:

[0203] The first circulation loop is a first refrigerant circulation loop formed by connecting the refrigerant flow path of the compressor 2, the condenser 3, the first expansion valve 11, and the refrigerant flow path of the first evaporator 4. In this scenario, the refrigerant flow path of the first evaporator 4 can be kept at a lower temperature by circulating the refrigerant in the first refrigerant circulation loop.

[0204] The second circulation loop at least includes the liquid cooling passage D of the battery pack connected in series with the liquid cooling passage E of the power converter and the liquid cooling passage H of the evaporator, wherein the liquid cooling passage D of the battery pack connected in series with the liquid cooling passage E of the power converter and the liquid cooling passage H of the evaporator are connected through the fifth valve port v5 and the seventh valve port v7, and the third valve port v3 and the first valve port v1, which are connected in series. In this way, the coolant cooled by the first evaporator 4 can enter the liquid cooling passage D of the battery pack and the liquid cooling passage E of the power converter, thereby realizing heat dissipation of the battery pack 500 of the energy storage device and the power converter 501 of the energy storage device.

[0205] In addition, it is worth mentioning that since the liquid cooling passage D of the battery pack is connected in series with the liquid cooling passage E of the power converter, the liquid cooling passage C of the vehicle battery is connected in series with the liquid cooling passage B of the charging gun, and the liquid cooling passage J where the indoor heat exchanger is located is arranged in parallel, one or more of the liquid cooling passage C of the vehicle battery, the liquid cooling passage B of the charging gun, and the liquid cooling passage J where the indoor heat exchanger is located may also be connected to the liquid cooling passage H of the evaporator, so as to utilize the coolant cooled by the first evaporator 4 to achieve cooling of the vehicle battery 200, the cable 1021 of the charging gun, and the user's living environment.

[0206] It can be understood that stop valves can be set in the liquid cooling passage D of the battery pack and the liquid cooling passage E of the power converter, the liquid cooling passage C of the vehicle battery and the liquid cooling passage B of the charging gun, and the liquid cooling circuit J where the indoor heat exchanger is located. In this way, the corresponding stop valve can be opened or closed according to specific needs to connect the corresponding passage to the second circulation circuit, which is beneficial to improving the energy efficiency of the thermal management system.

[0207] The third circulation loop includes the liquid cooling passage I of the radiator and the liquid cooling passage F of the condenser, wherein the liquid cooling passage I of the radiator and the liquid cooling passage F of the condenser are connected through the eighth valve port v8 and the sixth valve port v6, and the second valve port v2 and the fourth valve port v4, which are connected to each other. In this way, the coolant cooled by the radiator 5 can enter the liquid cooling passage F of the condenser, thereby realizing the cooling of the refrigerant in the refrigerant pipeline of the condenser 3.

[0208] It is worth mentioning that since the liquid cooling passage G of the photovoltaic device and the liquid cooling passage A of the charging host are connected in parallel and in series with the liquid cooling passage F of the condenser, the coolant cooled by the radiator 5 can also enter the liquid cooling passage G of the photovoltaic device and the liquid cooling passage A of the charging host to achieve cooling of the power conversion device 400 of the photovoltaic device and the cable 1021 of the charging gun. In addition, the liquid cooling passage G of the photovoltaic device and the liquid cooling passage A of the charging host can both be connected in series with a stop valve, so that the corresponding stop valve can be opened or closed according to specific needs to connect the liquid cooling passage G of the photovoltaic device and the liquid cooling passage A of the charging host to the third circulation loop, which is conducive to improving the energy efficiency of the thermal management system.

[0209] In addition, when the ambient temperature is more suitable (such as in spring or autumn), the operation mode of the thermal management system can refer to Fig.10b , Fig.10b for Fig. 9 A schematic diagram of the flow path of another operating mode of the thermal management system is provided. Fig.10b A cycle loop is shown:

[0210] The one circulation loop at least includes a passage in which the liquid cooling passage D of the battery pack and the liquid cooling passage E of the power converter are connected in series, a liquid cooling passage I of the radiator, a liquid cooling passage H of the evaporator, and a liquid cooling passage F of the condenser. In this way, the coolant cooled by the radiator 5 can enter the liquid cooling passage D of the battery pack and the liquid cooling passage E of the power converter, thereby achieving heat dissipation for the battery pack 500 of the energy storage device and the power converter 501 of the energy storage device.

[0211] It is worth mentioning that in this scenario, the compressor is in the off state, and the liquid cooling passage H of the evaporator and the liquid cooling passage F of the condenser are only used for the circulation of the coolant, and are not used for refrigeration.

[0212] In addition, when the cable 1021 of the charging gun and the vehicle battery 200 have heat dissipation requirements, the liquid cooling passage B of the charging gun and the liquid cooling passage C of the vehicle battery can also be connected to the above-mentioned circulation loop, so that the coolant cooled by the radiator 5 can enter the liquid cooling passage B of the charging gun and the liquid cooling passage C of the vehicle battery, thereby achieving heat dissipation of the cable 1021 of the charging gun and the vehicle battery 200.

[0213] Since the temperature of the user's living environment is relatively comfortable in the scenario where the ambient temperature is relatively suitable, there is usually no need for thermal management. Therefore, in this scenario, the stop valve of the liquid cooling loop J where the indoor heat exchanger is located can be closed, and the liquid cooling loop J where the indoor heat exchanger is located will not be connected to the above circulation loop, which is conducive to improving the energy efficiency of the thermal management system.

[0214] When the ambient temperature is low (such as in winter), the operation mode of the thermal management system can refer to Fig.10c , Fig.10c for Fig. 9 A flow path schematic diagram of another operating mode of a thermal management system is provided. Fig.10c A cycle loop is shown:

[0215] The one circulation loop at least includes a passage in which the liquid cooling passage D of the battery pack and the liquid cooling passage E of the power converter are connected in series, and a liquid cooling passage F of the condenser. The heat generated by the power converter 501 of the energy storage device can be transferred to the coolant of the circulation loop through the liquid cooling passage E of the power converter, and the heated coolant enters the liquid cooling passage D of the battery pack and can be used to heat the battery pack 500 of the energy storage device, thereby realizing efficient use of heat.

[0216] In addition, the heat generated by the power conversion device 400 of the photovoltaic device can be transferred to the coolant of the circulation loop through the liquid cooling passage G of the photovoltaic device, and the heat generated by the charging host 100 can be transferred to the coolant of the circulation loop through the liquid cooling passage A of the charging host. The heated coolant can also enter the liquid cooling passage D of the battery pack to heat the battery pack 500 of the energy storage device, thereby realizing efficient utilization of heat.

[0217] In the present application, the electric heater 8 can also be turned on or off according to specific heating needs.

[0218] It is understandable that when the vehicle battery 200 needs to be heated during the charging process, the liquid cooling passage C of the vehicle battery can also be connected to the above-mentioned circulation loop to utilize the heat generated by the power conversion device 400 of the photovoltaic device, the cable 1021 of the charging gun, the power converter 501 of the energy storage device and the charging host 100 to heat the vehicle battery 200.

[0219] In addition, when the temperature of the user's living environment is low, the liquid cooling loop J where the indoor heat exchanger is located can also be connected to the above-mentioned circulation loop to use the heat generated by the power conversion device 400 of the photovoltaic device, the cable 1021 of the charging gun, the power converter 501 of the energy storage device and the charging host 100 to heat the user's living environment.

[0220] exist Fig.10c In the operation mode shown, the compressor 2 is in the closed state. In actual application, when the ambient temperature is low, the first expansion valve 11 and the compressor 2 can be set to the open state as needed, that is, the condenser has a higher temperature through the working principle of the heat pump, so that the condenser is used to provide heat energy. Fig.10d , Fig.10d for Fig. 9 A flow path schematic diagram of another operating mode of a thermal management system is provided. Fig.10d Four circulation loops are shown:

[0221] The first circulation loop is a first refrigerant circulation loop formed by connecting the compressor 2 , the refrigerant channel of the condenser 3 , the first expansion valve 11 , and the refrigerant channel of the first evaporator 4 .

[0222] The second circulation loop at least includes the liquid cooling passage D of the battery pack and the liquid cooling passage E of the power converter connected in series, and the liquid cooling passage F of the condenser. The liquid cooling passage D of the battery pack and the liquid cooling passage E of the power converter are connected in series with the liquid cooling passage F of the condenser through the first valve port v1 and the fourth valve port v4, and the eighth valve port v8 and the fifth valve port v5. In this way, the heat generated by the condenser 3 can be transferred to the coolant in the second circulation loop, and the coolant flowing to the liquid cooling passage D of the battery pack can be used to meet the heating requirements of the battery pack 500 of the energy storage device.

[0223] In addition, when the liquid cooling passage G of the photovoltaic device, the liquid cooling passage A of the charging host and the liquid cooling passage B of the charging gun are also connected to the second circulation loop, the heat generated by the power conversion device 400 of the photovoltaic device, the heat generated by the charging host 100 and the heat generated by the cable 1021 of the charging gun can also be used to heat the battery pack 500 of the energy storage device.

[0224] The third circulation loop includes the liquid cooling passage I of the radiator and the liquid cooling passage H of the evaporator, and the liquid cooling passage I of the radiator and the liquid cooling passage H of the evaporator are connected through the sixth valve port v6 and the seventh valve port v7 and the third valve port v3 and the second valve port v2. In this way, the temperature of the first evaporator 4 can be increased through the heat exchange between the radiator 5 and the first evaporator 4, thereby increasing the temperature of the condenser 3.

[0225] In addition, in the present application, the electric heater 8 can be turned on or off according to specific heating needs.

[0226] It is understandable that when the vehicle battery 200 needs to be heated during the charging process, the liquid cooling passage C of the vehicle battery can also be connected to the second circulation loop to utilize the heat generated by the condenser 3, the heat generated by the power conversion device 400 of the photovoltaic equipment, the heat generated by the charging host 100, and the cable 1021 of the charging gun to heat the vehicle battery 200.

[0227] In addition, when the temperature of the user's living environment is low, the liquid cooling loop J where the indoor heat exchanger is located can also be connected to the above-mentioned second circulation loop to achieve heating of the user's living environment.

[0228] Fig.10e for Fig. 9 A flow path schematic diagram of another operating mode of a thermal management system is provided. Fig.10e Two circulation loops are shown:

[0229] The first circulation loop includes the liquid cooling passage D of the battery pack and the liquid cooling passage E of the power converter connected in series, the liquid cooling passage K of the electric heater, and the liquid cooling passage H of the evaporator, wherein the liquid cooling passage D of the battery pack and the liquid cooling passage E of the power converter connected in series, the liquid cooling passage K of the electric heater, and the liquid cooling passage H of the evaporator are connected through the fifth valve port v5 and the seventh valve port v7, and the third valve port v3 and the first valve port v1. In this embodiment, the compressor 2 is in the off state, but the electric heater 8 is in the on state, that is, in this embodiment, the battery pack 500 of the energy storage device is heated by the electric heater 8.

[0230] In addition, the liquid cooling passage C of the vehicle battery and the liquid cooling loop J where the indoor heat exchanger is located can be selectively connected to the above-mentioned first circulation loop according to specific heating requirements, which will not be introduced in detail here.

[0231] The second circulation loop includes the liquid cooling passage I of the radiator and the liquid cooling passage F of the condenser, wherein the liquid cooling passage I of the radiator and the liquid cooling passage F of the condenser are connected through the second valve port v2 and the fourth valve port v4, and the eighth valve port v8 and the sixth valve port v6. Since the liquid cooling passage G of the photovoltaic device is connected in series with the liquid cooling passage A of the charging host and then connected with the liquid cooling passage F of the condenser, the coolant cooled by the radiator 5 enters the liquid cooling passage F of the condenser and then enters the liquid cooling passage G of the photovoltaic device and the liquid cooling passage A of the charging host, thereby realizing the cooling of the power conversion device 400 of the photovoltaic device and the charging host 100.

[0232] The above is only some exemplary introduction to the specific setting methods of the thermal management system provided by the present application. On this basis, a series of deformations can be made to the specific structure of the thermal management system. For example, the valve body assembly can include more valve ports to connect the liquid cooling passage D of the battery pack, the liquid cooling passage C of the vehicle battery, the liquid cooling passage B of the charging gun, and at least two of the liquid cooling circuit J where the indoor heat exchanger is located to different groups of valve ports of the valve body assembly 1. Alternatively, in a possible embodiment, different liquid cooling passages can be connected in series or in parallel according to actual design needs and then connected to the valve ports of the valve body assembly 1. They will not be introduced one by one here, but they should all be understood to fall within the scope of protection of the present application.

[0233] In addition, in the present application, at least part of the thermal management system may also adopt a modular design. For example, the first evaporator 4, the first expansion valve 11, the condenser 3, the dehumidification module 13 and the valve body assembly 1 may be arranged in the same box so that the above parts can be transported and assembled as a whole, which is conducive to improving the assembly efficiency of the thermal management system and reducing the floor space of the thermal management system. In addition, other parts of the thermal management system may also be modularly designed according to specific needs. They are not listed one by one here, but they should all be understood to fall within the scope of protection of the present application.

[0234] The above embodiments of the present application all take the thermal management system used for thermal management of energy storage equipment, photovoltaic equipment, charging host, charging gun, vehicle battery and user living environment as an example to introduce the operation mode of the thermal management system and the thermal management effect that can be produced. However, based on the design principle of the thermal management system provided in the present application, the thermal management in at least any two of the above application scenarios can be integrated, and even more application scenarios with thermal management requirements can be integrated, so as to meet the thermal management requirements of each scenario integrated in the thermal management system, and effectively improve the utilization rate of the thermal management system, which is conducive to improving the operating energy efficiency of the thermal management system in various scenarios.

[0235] The above are only specific implementations of the present application, but the protection scope of the present application is not limited thereto. Any technician familiar with the technical field can easily think of changes or substitutions within the technical scope disclosed in the present application, which should be included in the protection scope of the present application. Therefore, the protection scope of the present application should be based on the protection scope of the claims.

Claims

1. A light, storage, charging and vehicle thermal management system, It is characterized in that It comprises a plurality of passages, a valve body assembly and a heat dissipation device, wherein the plurality of passages are all connected to the valve body assembly, wherein: The multiple passages include one or more of a liquid cooling passage of a charging host, a liquid cooling passage of a charging gun, and a liquid cooling passage of a vehicle-mounted battery, and the multiple passages also include a liquid cooling passage of an energy storage device and a liquid cooling passage where the heat dissipation device is located; The heat sink is used to cool the coolant flowing in the liquid cooling passage where the heat sink is located by means of a compressor or natural cooling; the valve body assembly is used to control one or more of the multiple passages to be connected to the liquid cooling passage where the heat sink is located; Among them, the energy storage device is used to transmit the stored electric energy to the charging host, the charging host transmits the electric energy to the charging gun, and the charging gun is used to charge the vehicle battery through a cable; the liquid cooling passage of the charging gun is used to dissipate heat for the cable, and the liquid cooling passage of the vehicle battery is used to dissipate heat for the vehicle battery.

2. The thermal management system according to claim 1, It is characterized in that The energy storage device includes a battery pack and a power converter. The power converter of the energy storage device is used to convert the electric energy output by the battery pack. The liquid cooling passage of the energy storage device includes: a liquid cooling passage of the battery pack and a liquid cooling passage of the power converter. The liquid cooling passage of the battery pack is used for heat exchange with the battery pack, and the liquid cooling passage of the power converter is used for heat exchange with the power converter of the energy storage device; the liquid cooling passage of the battery pack and the liquid cooling passage of the power converter are connected in series and then connected to the valve port of the valve body assembly, or the liquid cooling passage of the battery pack and the liquid cooling passage of the power converter are respectively connected to the valve port of the valve body assembly.

3. The thermal management system according to claim 2, It is characterized in that The multiple passages include a liquid cooling passage of the charging gun and a liquid cooling passage of the vehicle battery. The liquid cooling passage of the charging gun and the liquid cooling passage of the vehicle battery are connected in series and then connected to the valve port of the valve body assembly.

4. The thermal management system according to claim 3, It is characterized in that The multiple passages include a liquid cooling passage of the charging host; the liquid cooling passage where the heat dissipation device is located includes a liquid cooling passage of a condenser, the refrigerant passage of the condenser is connected to the compressor, and the refrigerant passage of the condenser is used for heat exchange with the liquid cooling passage of the condenser; the liquid cooling passage of the charging host is connected in series or in parallel with the liquid cooling passage of the condenser and then connected to the valve port of the valve body assembly.

5. The thermal management system according to claim 4, It is characterized in that The multiple pathways also include a liquid cooling pathway of a photovoltaic device, which is used to dissipate heat for a power conversion device of the photovoltaic device; the liquid cooling pathway of the photovoltaic device is connected in series or in parallel with the liquid cooling pathway of the charging host.

6. The thermal management system according to claim 5, It is characterized in that The multiple passages also include a liquid cooling passage where an indoor heat exchanger is located. The indoor heat exchanger is used for heat exchange with an indoor environment. The liquid cooling passage where the indoor heat exchanger is located is connected to a valve port of the valve body assembly.

7. The thermal management system according to claim 6, It is characterized in that When the valve body assembly controls one or more of the liquid cooling passages of the battery pack, the vehicle battery, and the indoor heat exchanger to be connected to the liquid cooling passage of the condenser, the condenser is used to heat the coolant in the connected liquid cooling passages.

8. The thermal management system according to claim 6 or 7, It is characterized in that When the valve body assembly controls one or more of the liquid cooling passages of the charging gun, the charging host, and the photovoltaic device to be connected to the liquid cooling passage of the battery pack, the heat generated by the cable, the heat generated by the charging host, and the heat generated by the power converter of the photovoltaic device are used to heat the coolant in the connected liquid cooling passages.

9. The thermal management system according to any one of claims 6 to 8, It is characterized in that When the valve body assembly controls one or more of the liquid cooling passages of the charging gun, the charging host, and the photovoltaic device to be connected to the liquid cooling passage of the vehicle battery, the heat generated by the cable, the heat generated by the charging host, and the heat generated by the power converter of the photovoltaic device are used to heat the coolant in the connected liquid cooling passages.

10. The thermal management system according to any one of claims 6 to 9, It is characterized in that The liquid cooling passage where the heat dissipation device is located also includes a liquid cooling passage of an evaporator. The refrigerant passage of the evaporator is connected to the compressor, and the refrigerant passage of the evaporator is used for heat exchange with the liquid cooling passage of the evaporator; when the valve body assembly controls the liquid cooling passage of the energy storage device, the liquid cooling passage of the vehicle battery, the liquid cooling passage of the charging gun, the liquid cooling passage of the charging host, the liquid cooling passage of the photovoltaic device, and one or more of the liquid cooling passages where the indoor heat exchanger is located to be connected to the liquid cooling passage of the evaporator, the evaporator is used to dissipate the heat of the coolant in the liquid cooling passages that are connected to each other.

11. The thermal management system according to any one of claims 6 to 10, It is characterized in that The liquid cooling passage where the heat dissipation device is located also includes a liquid cooling passage of a radiator, and the radiator is used to cool the coolant in the liquid cooling passage of the radiator through natural cooling; when the valve body assembly controls the liquid cooling passage of the energy storage device, the liquid cooling passage of the vehicle battery, the liquid cooling passage of the charging gun, the liquid cooling passage of the charging host, the liquid cooling passage of the photovoltaic device, and one or more of the liquid cooling passages where the indoor heat exchanger is located to be connected to the liquid cooling passage of the radiator, the radiator is used to dissipate the heat of the coolant in the liquid cooling passages that are connected to each other.

12. The thermal management system according to any one of claims 6 to 11, It is characterized in that The multiple passages also include a liquid cooling passage where an electric heater is located, and the electric heater is used to heat the coolant in the liquid cooling passage where the electric heater is located, and the liquid cooling passage where the electric heater is located is connected to the valve port of the valve body assembly; when the valve body assembly controls the liquid cooling passage of the battery pack, the liquid cooling passage of the vehicle battery, and one or more of the liquid cooling passages where the indoor heat exchanger is located to be connected to the liquid cooling passage where the electric heater is located, the electric heater is used to heat the coolant in the liquid cooling passages that are connected to each other.

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