Light, storage, charging and vehicle thermal management system

Abstract

The present application provides a light, storage, charging and vehicle thermal management system. The thermal management system comprises a plurality of paths, a valve body assembly, and a heat dissipation apparatus. The plurality of paths are all communicated with the valve body assembly. The plurality of paths comprise one or more of a liquid cooling path for a charging main unit, a liquid cooling path for a charging gun, and a liquid cooling path for a vehicle-mounted battery. In addition, the plurality of paths further comprise a liquid cooling path for an energy storage device and a liquid cooling path where the heat dissipation apparatus is located. The heat dissipation apparatus is used for cooling, by means of a compressor or natural cooling, a cooling liquid flowing in the liquid cooling path where the heat dissipation apparatus is located. The valve body assembly is used for controlling one or more of the plurality of paths to be communicated with the liquid cooling path where the heat dissipation apparatus is located. According to the thermal management system provided by the present application, integrated design of thermal management in at least two application scenarios is performed, so that the resource utilization rate can be effectively improved while thermal management requirements of scenarios integrated into the thermal management system are satisfied, thereby improving the operating energy efficiency of the thermal management system.

Description

A light, storage, charging, and vehicle thermal management system

[0001] Cross-reference to Related Applications

[0002] The present application claims priority to the Chinese patent application No. 202411132939.3, filed on August 16, 2024, and entitled “A light, storage, charging, and vehicle thermal management system”, the content of which is incorporated herein by reference in its entirety. TECHNICAL FIELD

[0003] The present application relates to the technical field of energy, and in particular, to a light, storage, charging, and vehicle thermal management system. BACKGROUND

[0004] With the continuous development and wide application of clean energy, energy storage devices capable of storing electric energy have been widely applied in multiple fields. For example, energy storage devices can be used in charging stations to power charging hosts. Since temperature is a factor affecting 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 provided for them.

[0005] At present, the thermal management systems applied to energy storage devices or charging hosts are mostly designed based on liquid cooling technology to meet the thermal management requirements of high-power operation. However, the thermal management requirements of energy storage devices or charging hosts are usually designed separately, which is not convenient for the unified control of thermal management systems in various scenarios, and the resource utilization rate is low. SUMMARY

[0006] 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 the resource utilization rate.

[0007] The application provides a heat management system, which comprises a plurality of passages, a valve body assembly and a heat dissipation device, and the plurality of passages are in communication with the valve body assembly. The plurality of passages comprise 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 an on-board battery. In addition, the plurality of passages further comprise a liquid cooling passage of an energy storage device and a liquid cooling passage in which the heat dissipation device is located. The heat dissipation device is used for cooling the cooling liquid flowing in the liquid cooling passage in which 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 plurality of passages to be in communication with the liquid cooling passage in which the heat dissipation device is located. In the application, the energy storage device is used for transmitting stored electric energy to the charging host, the charging host transmits electric energy to the charging gun, and the charging gun is used for charging the on-board battery through a cable. The liquid cooling passage of the charging gun is used for dissipating heat of the cable, and the liquid cooling passage of the on-board battery is used for dissipating heat of the on-board battery. The heat management system provided by the application can meet the heat management requirements in at least two scenes by fusing heat management modules in different application scenes and controlling the respective liquid cooling passages to be in communication in a corresponding mode through the valve body assembly, so that the heat management system can operate in a corresponding mode. Therefore, the design scheme of the heat management system provided by the application can effectively improve the resource utilization, thereby improving the energy efficiency of the heat management system.

[0008] Based on the principle of the heat management module fusion design provided by the application, at least two heat management modules can be fused into the same heat management system according to actual application scenes, so as to improve the integration of the heat management system.

[0009] For example, in a possible implementation manner of the application, the energy storage device comprises a battery pack and a power converter, and the power converter of the energy storage device is used for power conversion of the electric energy output by the battery pack. In the application, the liquid cooling passage of the energy storage device comprises 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 connected with 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 with the valve port of the valve body assembly. In this way, the heat management system provided by the application can be used for heat management of the battery module and the power converter of the energy storage device, so as to improve the utilization of the heat management system.

[0010] In the heat management system provided in the present application, when the plurality of passages include a liquid cooling passage of the charging gun and a liquid cooling passage of the vehicle-mounted battery, the liquid cooling passage of the charging gun and the liquid cooling passage of the vehicle-mounted battery are connected in series with the valve port of the valve body assembly. In this way, during the charging of the vehicle-mounted battery through the charging gun, the temperature of the cable of the charging gun and the temperature of the vehicle-mounted battery can be managed by the heat management system, so as to improve the charging efficiency of the charging gun and the vehicle-mounted battery, thereby improving the energy efficiency of the heat management system.

[0011] In addition, when the plurality of 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 with 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 and the liquid cooling passage of the condenser are connected in series or in parallel with the valve port of the valve body assembly. In this way, the cooling liquid 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 improve the energy efficiency of the heat management system.

[0012] In a possible implementation of the present application, the plurality of passages can further include a liquid cooling passage of a photovoltaic device, and the liquid cooling passage of the photovoltaic device is used for heat dissipation of a power converter of the photovoltaic device. In addition, the liquid cooling passage of the photovoltaic device is connected in series or in parallel with the liquid cooling passage of the charging host. In this way, the cooling liquid cooled by the heat dissipation device can be used to cool the condenser and the charging host, and can also be used to cool the power converter of the photovoltaic device at the same time, which is beneficial to improve the utilization rate of the heat management system.

[0013] In addition, the plurality of passages can further include a liquid cooling passage where an indoor heat exchanger is located, and 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 with the valve port of the valve body assembly. In this way, the valve body assembly can be used to control the conduction between the liquid cooling passage where the heat dissipation device is located and the liquid cooling passage where the indoor heat exchanger is located, so as to manage the temperature of the indoor environment by the heat dissipation device. Therefore, the heat management system provided in the present application can integrate the charging, storage, and charging station scenarios, and can also integrate the living scenarios, which can further improve the integration degree of the heat management system and is beneficial to improve the utilization rate of the heat management system.

[0014] By using the heat management system provided in the present application, the corresponding liquid cooling passage can be connected by the valve body assembly according to the heat management requirement in a specific application scenario.

[0015] For example, in a possible implementation of the present application, when the valve body assembly controls one or more of the liquid cooling passage of the battery pack, the liquid cooling passage of the on-board battery, and the liquid cooling passage of the indoor heat exchanger to be communicated with the liquid cooling passage of the condenser, the condenser is used to heat the coolant in the liquid cooling passage communicated with the condenser. That is, the working principle of the heat pump is used to make the condenser have a higher temperature, so that the condenser is used to heat the coolant in the liquid cooling passage communicated with the condenser, which is beneficial to improve the energy efficiency of the thermal management system.

[0016] In another possible implementation of the present application, when the valve body assembly controls one or more of the liquid cooling passage of the charging gun, the liquid cooling passage of the charging host, and the liquid cooling passage of the photovoltaic device to be communicated with 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 liquid cooling passage communicated with the condenser. In this way, the heat generated by each heat generating component is used to heat the battery pack, so as to realize waste heat recovery of each heat generating component, thereby realizing efficient use of heat.

[0017] In addition, when the valve body assembly controls one or more of the liquid cooling passage of the charging gun, the liquid cooling passage of the charging host, and the liquid cooling passage of the photovoltaic device to be communicated with the liquid cooling passage of the on-board 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 liquid cooling passage communicated with the condenser. In this way, the heat generated by each heat generating component is used to heat the battery pack, so as to realize waste heat recovery of each heat generating component, thereby realizing efficient use of heat.

[0018] In another possible implementation of the present application, the liquid cooling passage where the heat dissipation device is located further includes the liquid cooling passage of the evaporator. The refrigerant passage of the evaporator is communicated with the compressor, and the refrigerant passage of the evaporator is used to exchange heat with the liquid cooling passage of the evaporator. When the valve body assembly controls one or more of the liquid cooling passage of the energy storage device, the liquid cooling passage of the on-board 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 the liquid cooling passage where the indoor heat exchanger is located to be communicated with the liquid cooling passage of the evaporator, the evaporator is used to dissipate heat of the coolant in the liquid cooling passage communicated with the condenser. Thus, the heat dissipation device can use the compressor to cool the coolant in the liquid cooling passage communicated with the condenser, which can meet the thermal management requirements in an outdoor high-temperature environment.

[0019] In a possible implementation of the present application, the liquid cooling passage where the heat dissipation device is located further includes a liquid cooling passage of a heat sink, and the heat sink is configured to cool the cooling liquid in the liquid cooling passage of the heat sink by natural cooling. When the valve body assembly controls one or more of the liquid cooling passage of the energy storage device, the liquid cooling passage of the vehicle-mounted 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 the liquid cooling passage where the indoor heat exchanger is located to be in communication with the liquid cooling passage of the heat sink, the heat sink is configured to dissipate heat from the cooling liquid in the liquid cooling passage in communication. That is, the heat dissipation of the above liquid cooling passages in communication is achieved by using the natural cooling mode, which can meet the heat dissipation requirement in the case that the outdoor environment temperature is relatively suitable.

[0020] In another possible implementation of the present application, the plurality of passages further includes a liquid cooling passage where an electric heater is located, the electric heater is configured to heat the cooling liquid in the liquid cooling passage where the electric heater is located, and the liquid cooling passage where the electric heater is located is connected with the valve port of the valve body assembly. When the valve body assembly controls one or more of the liquid cooling passage of the battery pack, the liquid cooling passage of the vehicle-mounted battery, and the liquid cooling passage of the indoor heat exchanger to be in communication with the liquid cooling passage where the electric heater is located, the electric heater is configured to heat the cooling liquid in the liquid cooling passage in communication. In this way, the heating requirement in the case that the outdoor environment is relatively cold can be met by turning on the electric heater. BRIEF DESCRIPTION OF DRAWINGS

[0021] FIG. 1 is a system architecture diagram of a charging site integrating light, storage, charging, and vehicles according to an embodiment of the present application;

[0022] FIG. 2 is another system architecture diagram of a charging site integrating light, storage, charging, and vehicles according to an embodiment of the present application;

[0023] FIG. 3 is a structural schematic diagram of a thermal management system according to an embodiment of the present application;

[0024] FIG. 4a is a flow path schematic diagram of one operation mode of the thermal management system provided in FIG. 3;

[0025] FIG. 4b is a flow path schematic diagram of another operation mode of the thermal management system provided in FIG. 3;

[0026] FIG. 4c is a flow path schematic diagram of another operation mode of the thermal management system provided in FIG. 3;

[0027] FIG. 4d is a flow path schematic diagram of another operation mode of the thermal management system provided in FIG. 3;

[0028] FIG. 4e is a flow path schematic diagram of another operation mode of the thermal management system provided in FIG. 3;

[0029] FIG. 5 is another structural schematic diagram of a thermal management system according to an embodiment of the present application;

[0030] Figure 6a is a schematic diagram of a flow path of one mode of operation of the thermal management system provided in Figure 5;

[0031] Figure 6b is a schematic diagram of a flow path of another mode of operation of the thermal management system provided in Figure 5;

[0032] Figure 6c is a schematic diagram of a flow path of another mode of operation of the thermal management system provided in Figure 5;

[0033] Figure 7 is a schematic diagram of another structure of a thermal management system provided in embodiments of the application;

[0034] Figure 8a is a schematic diagram of a flow path of one mode of operation of the thermal management system provided in Figure 7;

[0035] Figure 8b is a schematic diagram of a flow path of another mode of operation of the thermal management system provided in Figure 7;

[0036] Figure 8c is a schematic diagram of a flow path of another mode of operation of the thermal management system provided in Figure 7;

[0037] Figure 8d is a schematic diagram of a flow path of another mode of operation of the thermal management system provided in Figure 7;

[0038] Figure 8e is a schematic diagram of a flow path of another mode of operation of the thermal management system provided in Figure 7;

[0039] Figure 8f is a schematic diagram of a flow path of another mode of operation of the thermal management system provided in Figure 7;

[0040] Figure 9 is a schematic diagram of another structure of a thermal management system provided in embodiments of the application;

[0041] Figure 10a is a schematic diagram of a flow path of one mode of operation of the thermal management system provided in Figure 9;

[0042] Figure 10b is a schematic diagram of a flow path of another mode of operation of the thermal management system provided in Figure 9;

[0043] Figure 10c is a schematic diagram of a flow path of another mode of operation of the thermal management system provided in Figure 9;

[0044] Figure 10d is a schematic diagram of a flow path of another mode of operation of the thermal management system provided in Figure 9;

[0045] Figure 10e is a schematic diagram of a flow path of another mode of operation of the thermal management system provided in Figure 9.

[0046] Reference signs: 100 - charging host; 101 - charging terminal; 102 - charging gun; 1021 - cable; 2000 - electric vehicle; 200 - on-board battery; 3000 - power grid; 4000 - photovoltaic device; 400 - power conversion device; 5000a, 5000b - energy storage device; 500 - battery pack; 501 - power converter; A - liquid cooling passage of charging host; B - liquid cooling passage of charging gun; C - liquid cooling passage of on-board battery; D - liquid cooling passage of battery pack; E - liquid cooling passage of power converter; F - liquid cooling passage of condenser; G - liquid cooling passage of photovoltaic device; H - liquid cooling passage of evaporator; I - liquid cooling passage of radiator; J - liquid cooling passage where indoor heat exchanger is located; K - liquid cooling passage where electric heater is located; 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; v8 - eighth valve port; 1 - valve body assembly; 111 - ten-port valve; 112 - eight-port valve; 113a - first five-port valve; 113b - second five-port valve; 114a - first four-port valve; 114b - second four-port valve; 2 - compressor; 3 - condenser; 4 - evaporator / first evaporator; 5 - radiator; 6 - fan; 7 - indoor heat exchanger; 8 - electric heater; 9 - first bypass valve; 10 - second bypass valve; 11 - first expansion valve; 12 - third bypass valve; 13 - dehumidification module; 131 - second evaporator; 132 - second expansion valve; 14a - first pump; 14b - second pump. DETAILED DESCRIPTION

[0047] In order to make the purposes, technical solutions and advantages of the present application clearer, the following will further describe the present application in detail with reference to the drawings. However, the example embodiments can be implemented in various forms, and should not be understood as being limited to the embodiments set forth herein. The same reference signs in the drawings represent the same or similar structures, and thus repeated description thereof will be omitted. The expressions of position and direction described in the embodiments of the present application are described with reference to the drawings, but can be changed as needed, and the changes made are 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 positional relationship, and do not represent the true proportions.

[0048] It should be noted that specific details are set forth in the following description in order to facilitate understanding of the present application. However, the present application can be implemented in various ways different from those described herein, and those skilled in the art can make similar generalizations without departing from the scope of the present application. Therefore, the present application is not limited to the specific embodiments disclosed below.

[0049] At present, energy storage devices are widely used in various fields, and exemplary applications can be used in five types of industrial and commercial energy storage scenarios, such as small industrial and commercial (for example, small factories, etc.), medium industrial and commercial, large industrial and commercial, light storage charging station, and small and medium-sized microgrid (for example, islands, etc.), and three types of power station scenarios, such as wind and light storage power station, power grid storage power station, and large microgrid, for storing and releasing electric energy.

[0050] Referring to FIG. 1 and FIG. 2, both of which are a system architecture diagram of a charging station integrating light, storage, charging and vehicles provided by the embodiment of the present application.

[0051] In FIG. 1, the charging device for electric vehicle charging is split type, and the charging host 100 and the charging terminal 101 (or referred to as charging pile) are each a cabinet, and the charging host 100 and the charging terminal 101 transmit electric energy through a power cable. The charging host 100 is electrically connected with each charging terminal 101, and each charging terminal 101 is electrically connected with the charging gun 102 through a power cable, and the charging gun 102 is used for electrically connecting with the electric vehicle 2000.

[0052] Among them, the charging host 100 includes a plurality of power conversion devices (not shown in FIG. 1), which can convert alternating current from the power grid 3000 into stable direct current and then transmit to the charging terminal 101, and then transmit to the electric vehicle 2000 through the charging gun 102 electrically connected with the charging terminal 101. The plurality of power conversion devices may, for example, include alternating current-direct current (AC-DC) conversion devices and direct current-direct current (DC-DC) conversion devices.

[0053] The charging terminal 101 can include a shell, a human-computer interaction interface, a charging control unit, a metering and charging unit, etc., and is used for information interaction, energy transmission, metering and charging, etc. with the electric vehicle 2000.

[0054] In FIG. 2, the charging device is integrated type, and the charging host 100 and at least one charging gun 102 electrically connected with the charging host 100 are integrated in the charging device. The charging terminal can not be separately arranged in the charging station, and the human-computer interaction interface, the charging control unit, the metering and charging unit, etc. can be directly arranged in the charging host 100. The plurality of power conversion devices in the charging host 100 convert alternating current from the power grid 3000 into stable direct current and then directly transmit to the electric vehicle 2000 through the charging gun 102.

[0055] The charging station shown in FIG. 1 and FIG. 2 can further include a photovoltaic device 4000 and an energy storage device. The photovoltaic device 4000 can include a photovoltaic inverter (not shown in FIG. 1 and FIG. 2). The photovoltaic inverter is used to perform power conversion on the electrical energy output by the photovoltaic panel. The electrical 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 electrical 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 the electrical energy stored therein to the DC bus of the charging host 100 to transmit the electrical energy stored therein to the charging host 100, so as to be provided to the charging gun 102 by the charging host 100.

[0056] The energy storage device includes a battery pack and a power converter. During the charging and discharging of the battery pack, a large amount of heat is generated. In order to ensure the charging and discharging performance and use safety of the battery pack, it is usually necessary to cool the battery pack. The power converter of the energy storage device can include a power conversion system (PCS) or a direct current converter (DCDC). The PCS can be used to convert alternating current into direct current and provide it to the battery pack, or convert direct current from the battery pack into alternating current. In this application, the PCS can be a direct current- alternating current converter, or a direct current-direct current converter, i.e. the PCS can include a direct current- alternating current conversion device, or a direct current-direct current conversion device or a control unit, etc.

[0057] In the charging scene integrating light, storage, charging and vehicles, in addition to the battery module and the 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 generate a large amount of heat during operation, which will affect the operation reliability and use safety of these devices.

[0058] In addition, the temperature of the on-board battery of the electric vehicle has a great influence on the charging efficiency during charging. If high-rate charging of the on-board battery is to be achieved, the temperature control problem of the on-board battery needs to be solved.

[0059] In order to solve the above temperature control problem, it is usually necessary to design a thermal management module. Since the liquid cooling technology mainly relies on the circulation of the cooling liquid (such as water) in the cooling liquid pipeline to achieve heat exchange, its heat exchange efficiency is high, therefore, more and more thermal management modules are designed based on liquid cooling technology. However, at present, one thermal management module is usually provided for each of the energy storage device, the charging host, the charging gun and the electric vehicle, which is not convenient for unified control of thermal management in each scene, and the resource utilization rate is low.

[0060] Therefore, the thermal management system provided in the present application improves resource utilization by fusing the thermal management modules of the devices with thermal management requirements, thereby improving the operation energy efficiency of the thermal management system in various scenarios. In order to facilitate the understanding of the thermal management system provided in the present application, the following will be described in detail in combination with specific embodiments.

[0061] FIG. 3 is a structural schematic diagram of a thermal management system provided in an embodiment of the present application. As shown in FIG. 3, in order to realize the fusion design of multiple thermal management modules, the thermal management system provided in the present application includes multiple channels, a valve body assembly 1 and a heat dissipation device. The multiple channels may, for example, include a liquid cooling channel A of a charging host, a liquid cooling channel B of a charging gun and a liquid cooling channel C of an on-board battery. In addition, the multiple channels also include a liquid cooling channel of an energy storage device and a liquid cooling channel where the heat dissipation device is located. It can be understood that in the present application, the multiple channels are all used for circulating cooling liquid, wherein the cooling liquid can be water or ethylene glycol, etc.

[0062] 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 on-board battery 200 through the cable 1021. Based on this, it can be understood that the liquid cooling channel of the charging gun 102 is used to dissipate heat for the cable 1021, and the liquid cooling channel of the on-board battery is used to dissipate heat for the on-board battery 200.

[0063] The heat dissipation device can be used to cool the cooling liquid flowing in the liquid cooling channel where the heat dissipation device is located by a compressor or natural cooling.

[0064] In addition, the valve body assembly 1 is used to control one or more of the multiple channels to be in communication with the liquid cooling channel where the heat dissipation device is located, so that the multiple channels can be connected in a specific manner, so that the thermal management system realizes multiple working modes, thereby meeting the thermal management requirements in different scenarios.

[0065] In a specific design, referring to FIG. 3, since the energy storage device includes a battery pack 500 and a power converter 501, the liquid cooling channel of the energy storage device can include a liquid cooling channel D of the battery pack and a liquid cooling channel E of the power converter. Among them, the liquid cooling channel D of the battery pack is used for heat exchange with the battery pack 500, and the liquid cooling channel E of the power converter is used for heat exchange with the power converter 501 of the energy storage device.

[0066] It is worth mentioning that, in actual application, in order to enable the cooling liquid to flow in the liquid cooling passage D of the battery pack and realize heat exchange with the battery pack 500, a cold plate or the like heat exchange member can be arranged 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 cold plate or the like heat exchange member can also be arranged 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 cold plate or the like heat exchange member can be arranged in the corresponding liquid cooling passage according to the specific heat exchange requirement, which will not be described hereinafter.

[0067] In the embodiment shown in FIG. 3, the liquid cooling passage D of the battery pack and the liquid cooling passage E of the power converter are respectively connected with the valve ports of the valve body assembly 1. Specifically, the liquid cooling passage D of the battery pack can be connected with 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 can be connected with the ninth valve port v9 and the tenth valve port v10 of the valve body assembly 1.

[0068] The thermal management system provided in the present application further comprises 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, when the heat dissipation requirement of the power converter 501 of the energy storage device is low in a low-temperature environment, the first bypass valve 9 can be opened to make part of the cooling liquid flowing in the liquid cooling passage E of the power converter flow through the first bypass valve 9, thereby reducing the amount of cooling liquid flowing through the liquid cooling passage E of the power converter, which is beneficial to improve the energy efficiency of the thermal management system.

[0069] 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 with the valve ports of the valve body assembly 1. In the embodiment shown in FIG. 3, 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 with the first valve port v1 and the second valve port v2 of the valve body assembly 1. In this way, the temperature management of the cable 1021 and the vehicle-mounted battery 200 can be realized at the same time in the process of charging the vehicle-mounted battery 200 by the charging gun through the cable 1021, so as to ensure the charging efficiency of the charging gun charging the vehicle-mounted battery 200.

[0070] As shown in FIG. 3, in the thermal management system provided in 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 in communication with the compressor 2, and the refrigerant passage of the condenser is used for heat exchange with the liquid cooling passage F of the condenser. In addition, in the embodiment shown in FIG. 3, the liquid cooling passage A of the charging host is connected with the valve port of the valve body assembly 1 after being connected in series with the liquid cooling passage F of the condenser. Specifically, the liquid cooling passage A of the charging host is connected with the seventh valve port v7 and the eighth valve port v8 of the valve body assembly after being 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 with the valve port of the valve body assembly 1 after being connected in parallel with the liquid cooling passage F of the condenser.

[0071] In the thermal management system shown in FIG. 3, 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 can also be located upstream of the liquid cooling passage F of the condenser.

[0072] 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 in communication with the compressor 2, and the refrigerant passage of the evaporator is used for heat exchange with the liquid cooling passage H of the evaporator. In the embodiment shown in FIG. 3, the liquid cooling passage H of the evaporator is connected with the fifth valve port v5 and the sixth valve port v6 of the valve body assembly 1.

[0073] With continued reference to FIG. 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 cooling liquid in the liquid cooling passage I of the radiator by natural cooling, and the liquid cooling passage I of the radiator is connected with the third valve port v3 and the fourth valve port v4 of the valve body assembly 1. In order to realize the heat dissipation function, the radiator 5 can usually be provided with a fan 6. By adjusting the rotating speed of the fan 6, the air flow rate flowing through the surface of the radiator 5 can be adjusted, and thus the heat exchange capacity of the radiator 5 can be adjusted.

[0074] In the thermal management system provided in the present application, the plurality of passages also includes the liquid cooling passage G of the photovoltaic device, and the liquid cooling passage G of the photovoltaic device is used for dissipating heat for the power conversion device 400 of the photovoltaic device. In the embodiment shown in FIG. 3, 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 before being connected in series or in parallel with the liquid cooling passage F of the condenser.

[0075] In the thermal management system shown in FIG. 3, 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 can also be located upstream of the liquid cooling passage F of the condenser.

[0076] As shown in FIG. 3, the thermal management system provided by the present application further comprises 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, when the ambient temperature is low and the power conversion device 400 of the charging host 100 and the photovoltaic device has low heat dissipation demand, the second bypass valve 10 can be opened to make part of the cooling liquid flowing through the liquid cooling passage F of the condenser flow through the second bypass valve 10, thereby reducing the amount of cooling liquid 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.

[0077] 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 can also be connected in series or parallel with the liquid cooling passage F of the condenser. In this way, the cooling liquid flowing through the liquid cooling passage F of the condenser can be used to dissipate heat of the power converter 501.

[0078] It can be understood that in actual application, more liquid cooling passages can be integrated into the thermal management system according to specific thermal management requirements. For example, in the embodiment shown in FIG. 3, the plurality of passages further comprises a liquid cooling passage J where an indoor heat exchanger is located. The indoor heat exchanger 7 is used for heat exchange with the indoor environment, and the liquid cooling passage J where the indoor heat exchanger is located is connected with the valve port of the valve body assembly 1. Specifically, as shown in FIG. 3, the liquid cooling passage J where the indoor heat exchanger is located is connected with the first valve port v1 and the second valve port v2 of the valve body assembly 1. In this way, the conduction of the liquid cooling passage J where the indoor heat exchanger is located with other liquid cooling passages can be controlled by the valve body assembly 1 to achieve cooling or heating of the indoor environment. That is, the thermal management system provided by the present application can be used for heating or cooling of the indoor environment, thereby achieving thermal management of the user's living environment.

[0079] In addition, in the thermal management system provided in the embodiments of the present application, the plurality of passages can further comprise a liquid cooling passage K where an electric heater is located. The electric heater 8 is used for heating the cooling liquid in the liquid cooling passage K where the electric heater is located, and the liquid cooling passage K where the electric heater is located is connected with the valve port of the valve body assembly 1. Specifically, in the embodiment shown in FIG. 3, the liquid cooling passage K where the electric heater is located is connected with the first valve port v1 and the second valve port v2 of the valve body assembly 1.

[0080] Continuing to refer to FIG. 3, the thermal management system provided by the present application can further comprise 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 above-mentioned refrigerant includes R134a, R1234yf or R744, etc.

[0081] In addition, the thermal management system can further include a third bypass valve 12, which is connected in parallel with the compressor 2. In this way, when the compressor 2 is working in the 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 working in the refrigeration state, the third bypass valve 12 is closed.

[0082] In addition, the thermal management system can further include a dehumidification module 13, which can be used to reduce the humidity inside the energy storage device, so as to reduce the risk of corrosion of the battery module, the power converter and other electrical devices, and improve the safety and reliability of the energy storage device. 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. 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, which can also include R134a, R1234yf, or R744, etc.

[0083] In a specific implementation, the dehumidification module 13 also includes an evaporator and an expansion valve. In order to distinguish, the evaporator in the first refrigerant circulation loop can 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. 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 this application, the second evaporator 131 can be but not limited to a micro-channel heat exchanger.

[0084] It can be understood that, due to the circulation of the refrigerant in the second refrigerant circulation loop formed by the compressor 2, the condenser 3 and the dehumidification module 13, the temperature of the second evaporator 131 will be relatively low. 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 will condense into water droplets, which will be discharged through the drain pipe to reduce the humidity in the energy storage device.

[0085] In addition, due to the low temperature of the second evaporator 131, it can also reduce the temperature of the air in the energy storage device, which is beneficial to make the battery module of the energy storage device in a low temperature environment. In addition, the dehumidification module 13 can further include a fan (not shown in FIG. 3), which can be arranged near the second evaporator 131 to accelerate the flow speed of the air flowing through the second evaporator 131, thereby reducing the temperature of the second evaporator 131, which is beneficial to improve the dehumidification effect of the dehumidification module 13.

[0086] 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 do not affect each other and 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 beneficial to reduce the volume and cost of the thermal management system and facilitate 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 provided, thereby reducing the number of parts used in the thermal management system, which is beneficial to reduce the manufacturing cost.

[0087] It is worth mentioning that in the embodiments of the present application, the arrangement 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 can not be arranged at the same time. For example, the compressor 2 is not provided with the third bypass valve 12, and the thermal management system is provided with the dehumidification module 13, or the compressor 2 is provided with the third bypass valve 12, and 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 selectively arranged or not arranged as needed.

[0088] In addition to the above structure, the thermal management system provided by the embodiments of the present application can also be provided with a pump in each cooling liquid circulation loop, wherein the number and arrangement position of the pump can be arranged according to specific application scenarios. For example, as shown in FIG. 3, 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 is located upstream of the condenser 3. In other possible embodiments, the number and arrangement position of the pump can be adaptively adjusted according to specific use needs.

[0089] It can be understood that the thermal management system can control the conduction of each passage in different ways through the conduction of different valve ports of the valve body assembly 1. In the specific implementation, in the thermal management system shown in FIG. 3, the valve body assembly 1 includes a ten-port valve 111, which includes ten valve ports. The connection relationship between each liquid cooling passage and each valve port of the ten-port valve 111 is as described above, and will not be described here.

[0090] It is worth mentioning that FIG. 3 is only an exemplary illustration 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 also be used for connection, which will not be introduced one by one here. In this way, each two valve ports of the ten-way valve 111 are connected with one passage, so that the heat 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 circulating loops to provide feasible conditions for the heat management system to realize multiple working modes.

[0091] In addition, the valve body assembly 1 is used to establish a connection relationship between each passage to make the heat pipe system meet the heat management requirements of different loads, which can not only improve the integration of the heat management system, but also simplify the connection pipeline of the heat management system, and is conducive to improving the utilization rate of the heat management system, thereby being conducive to improving the energy efficiency of the heat management system.

[0092] After understanding the basic structure of the heat management system provided by the above-mentioned embodiments of the present application, the connection mode of each passage of the heat management system and the heat management effect that can be achieved will be described in the following for different application scenarios.

[0093] For example, when the ambient temperature is high (such as in summer high temperature and high humidity), referring to FIG. 4a, FIG. 4a is a flow path schematic diagram of one operating mode of the heat management system provided by FIG. 3. Among them, FIG. 4a shows three circulating loops:

[0094] The first circulating loop is a first refrigerant circulating loop formed by connecting the compressor 2, the refrigerant flow channel of the condenser 3, the first expansion valve 11 and the refrigerant flow channel of the first evaporator 4. In this scenario, the refrigerant flow channel of the first evaporator 4 can be kept at a lower temperature by the flow of the refrigerant in the first refrigerant circulating loop.

[0095] The second circulating 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 conducted 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 cooling liquid 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 achieving heat dissipation of the battery pack 500 of the energy storage device and the power converter 501 of the energy storage device.

[0096] In addition, it is worth mentioning that, in the embodiment shown in FIG. 4a, the liquid cooling passage C of the vehicle-mounted battery and the liquid cooling passage B of the charging gun are connected in series, and the liquid cooling passage J in which the indoor heat exchanger is located is connected in parallel with the liquid cooling passage D of the battery pack. Therefore, one or more of the liquid cooling passage C of the vehicle-mounted battery and the liquid cooling passage B of the charging gun connected in series and the liquid cooling passage J in which the indoor heat exchanger is located can also be connected to the liquid cooling passage H of the evaporator. Therefore, the cooling liquid cooled by the first evaporator 4 can also enter one or more of the liquid cooling passage C of the vehicle-mounted battery and the liquid cooling passage B of the charging gun connected in series and the liquid cooling passage J in which the indoor heat exchanger is located, thereby achieving cooling of the vehicle-mounted battery 200, the cable 1021 of the charging gun, and the user's living environment.

[0097] It can be understood that the liquid cooling passage D of the battery pack, the liquid cooling passage C of the vehicle-mounted battery and the liquid cooling passage B of the charging gun connected in series, and the liquid cooling passage J in which the indoor heat exchanger is located can all be provided with a stop valve. Therefore, the corresponding stop valve can be opened or closed according to specific needs to connect the corresponding liquid cooling passage to the liquid cooling passage H of the evaporator, which is beneficial to improving the energy efficiency of the thermal management system.

[0098] The third circulating 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. In this way, the cooling liquid cooled by the radiator 5 can enter the liquid cooling passage F of the condenser, thereby achieving cooling of the refrigerant in the refrigerant pipeline of the condenser 3.

[0099] In addition, 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. Therefore, the cooled cooling liquid 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 achieving cooling of the power conversion device 400 of the photovoltaic device and the charging host 100.

[0100] 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. Therefore, 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 circulating loop, which is beneficial to improving the energy efficiency of the thermal management system.

[0101] In addition, in the scenario where the ambient temperature is relatively high (for example, in the case of 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. Specifically, referring to FIG. 4b, FIG. 4b is a flow path diagram of another operating mode of the thermal management system provided in FIG. 3. In FIG. 4b, four circulating loops are shown:

[0102] The first circulation loop is the same as the first circulation loop shown in FIG. 4a, and will not be described here.

[0103] 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 communicated 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 cooling liquid cooled by the first evaporator 4 can enter the liquid cooling passage D of the battery pack, so as to achieve heat dissipation of the battery pack 500 of the energy storage device.

[0104] In addition, one or more of the liquid cooling passage C of the vehicle-mounted battery, the passage in series with the liquid cooling passage B of the charging gun, and the liquid cooling passage J in which the indoor heat exchanger is located can also be communicated with the liquid cooling passage H of the evaporator. Then, the cooling liquid cooled by the first evaporator 4 can also enter one or more of the liquid cooling passage C of the vehicle-mounted battery, the passage in series with the liquid cooling passage B of the charging gun, and the liquid cooling passage J in which the indoor heat exchanger is located, so as to achieve cooling of the vehicle-mounted battery 200, the cable 1021 of the charging gun, and the user's living environment.

[0105] The third circulation loop is the same as the third circulation loop shown in FIG. 4a, and will not be described here.

[0106] 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 communicated through the fourth valve port v4 and the ninth valve port v9 and the tenth valve port v10 and the third valve port v3. In this way, the cooling liquid cooled by the radiator 5 can enter the liquid cooling passage E of the power converter, so as to achieve cooling of the power converter 501.

[0107] In addition, when the environmental temperature is relatively suitable (for example, in spring or autumn), the operation mode of the thermal management system can refer to FIG. 4c, which is a flow path schematic diagram of another operation mode provided by the embodiment of the present application. In FIG. 4c, one circulation loop is shown:

[0108] The one circulation loop at least includes the liquid cooling passage D of the battery pack, the liquid cooling passage E of the power converter, the liquid cooling passage I of the radiator, and the liquid cooling passage F of the condenser. Wherein, these liquid cooling passages are communicated 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 cooling liquid 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, so as to achieve heat dissipation of the battery pack 500 of the energy storage device and the power converter 501 of the energy storage device.

[0109] When the cable 1021 of the charging gun also has heat dissipation requirements, the liquid cooling passage B of the charging gun can be connected to the above-mentioned circulating loop, and the cooling liquid cooled by the radiator 5 can be used to cool the cable 1021 of the charging gun when entering the liquid cooling passage B of the charging gun.

[0110] In addition, when the charging host 100, the power conversion device 400 of the photovoltaic device, and the vehicle-mounted battery 200 have heat dissipation requirements, the liquid cooling passage A of the charging host, the liquid cooling passage G of the photovoltaic device, and the liquid cooling passage C of the vehicle-mounted battery can also be connected to the above-mentioned circulating loop, so that the cooling liquid cooled by the radiator 5 can enter the respective liquid cooling passages, thereby achieving heat dissipation of the charging host 100, the power conversion device 400 of the photovoltaic device, and the vehicle-mounted battery 200.

[0111] 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 heat management requirement. Therefore, in this scenario, the shut-off 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 is not connected to the above-mentioned circulating loop, which is beneficial to improve the energy efficiency of the heat management system.

[0112] When the ambient temperature is low (for example, in the case of low temperature in winter), the operating mode of the heat management system can refer to FIG. 4d, which is a flow path schematic diagram of another operating mode of the heat management system provided in FIG. 3. FIG. 4d shows a circulating loop:

[0113] The circulating loop at least includes 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, 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 cooling liquid in the circulating loop through the liquid cooling passage E of the power converter.

[0114] 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 circulating 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 cooling liquid in the circulating loop through the respective liquid cooling passages, and the heated cooling liquid flowing through the liquid cooling passage D of the battery pack can be used to heat the battery pack 500 of the energy storage device, thereby achieving efficient use of heat.

[0115] It can be understood that when the on-board battery 200 has heating requirements during charging, the liquid cooling passage C of the on-board battery can also be connected to the above-mentioned circulating loop to heat the on-board battery 200 by using 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.

[0116] In addition, when the temperature of the user's living environment is low, the liquid cooling passage J in which the indoor heat exchanger is located can also be connected to the above-mentioned circulating 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 for heating the user's living environment.

[0117] In the present application, the electric heater 8 can also be turned on or off according to specific heating requirements. By controlling one or more of the liquid cooling passage D of the battery pack, the liquid cooling passage C of the on-board battery, and the liquid cooling passage J in which the indoor heat exchanger is located to be in communication with the liquid cooling passage K in which the electric heater is located through the valve body assembly 1, the cooling liquid in the liquid cooling passage in communication with the electric heater 8 can be heated by the electric heater 8 to achieve heating of the corresponding device.

[0118] In actual application, 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 by the working principle of the heat pump, so as to provide heat energy by the condenser. In specific implementation, reference can be made to FIG. 4e, which is a flow path diagram of another operating mode of the heat management system provided in FIG. 3. FIG. 4e shows three circulating loops:

[0119] The first circulating loop is a first refrigerant circulating loop formed by connecting the compressor 2, the refrigerant passage of the condenser 3, the first expansion valve 11, and the refrigerant passage of the first evaporator 4.

[0120] The second circulating loop is connected in the same way as the circulating loop in FIG. 4d, which will not be described here. However, in the second circulating loop, the heat generated by the condenser 3 can also be transferred to the cooling liquid through heat exchange between the refrigerant passage of the condenser 3 and the liquid cooling passage of the condenser, thereby meeting the heating requirements of the battery pack 500 of the energy storage device, the on-board battery 200, and the user's living environment, etc.

[0121] The third circulating loop includes the liquid cooling passage I of the radiator and the liquid cooling passage H of the evaporator, which 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 in communication. In this way, the temperature of the first evaporator 4 can be raised through heat exchange between the radiator 5 and the first evaporator 4, thereby raising the temperature of the condenser 3.

[0122] The above is only some exemplary descriptions of the operation modes that can be achieved by the thermal management system shown in FIG. 3. On this basis, the corresponding liquid cooling passages can be connected by the conduction between different valve ports of the ten-way valve 111, so that the thermal management system works in the corresponding operation mode. However, they are not listed one by one here, but should be understood as falling within the protection scope of the present application.

[0123] In the above embodiment, the valve body assembly includes a ten-way valve 111, which connects the liquid cooling passages in different forms by the conduction between different valve ports of the ten-way valve 111. In actual application, the specific setting mode of the valve body assembly 1 can also be adjusted according to specific needs. For example, referring to FIG. 5, FIG. 5 is another structural schematic diagram of the thermal management system provided by the embodiment of the present application. The valve body assembly 1 of the thermal management system shown in FIG. 5 includes an eight-way valve 112, which includes eight valve ports for connecting with the passages, i.e., a first valve port v1, a second valve port v2, a third valve port v3, a fourth valve port v4, a fifth valve port v5, a sixth valve port v6, a seventh valve port v7, and an eighth valve port v8.

[0124] Referring to FIGS. 3 and 5 together, compared with the embodiment shown in FIG. 3, in the thermal management system shown in FIG. 5, the liquid cooling passage E of the power converter is connected in series with the liquid cooling passage D of the battery pack. In addition, in the embodiment shown in FIG. 5, the liquid cooling passage E of the power converter is arranged downstream of the liquid cooling passage D of the battery pack. In other possible embodiments, the liquid cooling passage E of the power converter can also be arranged upstream of the liquid cooling passage D of the battery pack. The relative position of the liquid cooling passage E of the power converter and the liquid cooling passage D of the battery pack is not limited by the present application.

[0125] The other structures of the thermal management system shown in FIG. 5 can be arranged by referring to the thermal management system shown in FIG. 3, which will not be described here.

[0126] Next, for different application scenarios, the connection mode of each passage of the thermal management system shown in FIG. 5 and the thermal management effect that can be achieved are described.

[0127] When the ambient temperature is high (such as in summer high temperature and high humidity), referring to FIG. 6a, FIG. 6a is a flow path schematic diagram of one operation mode of the thermal management system provided by FIG. 5. FIG. 6a shows three circulation loops:

[0128] The first circulation loop is a first refrigerant circulation loop formed by connecting the compressor 2, the refrigerant flow channel of the condenser 3, the first expansion valve 11, and the refrigerant flow channel of the first evaporator 4. In this scenario, the refrigerant flow channel of the first evaporator 4 can be kept at a lower temperature by allowing the refrigerant to flow through the first refrigerant circulation loop.

[0129] The second circulation loop includes at least a path in which the liquid cooling path D of the battery pack and the liquid cooling path E of the power converter are connected in series, and the liquid cooling path H of the evaporator. The path in which the liquid cooling path D of the battery pack and the liquid cooling path E of the power converter are connected in series and the liquid cooling path H of the evaporator are connected by the second valve port v2 and the fifth valve port v5, and the sixth valve port v6 and the first valve port v1 being turned on. In this way, the cooling liquid cooled by the first evaporator 4 can enter the liquid cooling path D of the battery pack and the liquid cooling path 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.

[0130] In addition, it is worth mentioning that since the path in which the liquid cooling path D of the battery pack and the liquid cooling path E of the power converter are connected in series, the path in which the liquid cooling path C of the vehicle-mounted battery and the liquid cooling path B of the charging gun are connected in series, and the liquid cooling path J in which the indoor heat exchanger is located are connected in parallel, one or more of the liquid cooling path C of the vehicle-mounted battery, the liquid cooling path B of the charging gun, and the liquid cooling path J in which the indoor heat exchanger is located can also be connected to the liquid cooling path H of the evaporator to utilize the cooling liquid cooled by the first evaporator 4 to achieve cooling for the vehicle-mounted battery 200, the cable 1021 of the charging gun, and the user's living environment.

[0131] It can be understood that a stop valve can be provided in each of the path in which the liquid cooling path D of the battery pack and the liquid cooling path E of the power converter are connected in series, the path in which the liquid cooling path C of the vehicle-mounted battery and the liquid cooling path B of the charging gun are connected in series, and the liquid cooling path J in which 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 path to the second circulation loop, which is beneficial to improving the energy efficiency of the thermal management system.

[0132] The third circulation loop includes the liquid cooling path I of the radiator and the liquid cooling path F of the condenser. The liquid cooling path I of the radiator and the liquid cooling path F of the condenser are connected by the fourth valve port v4 and the seventh valve port v7, and the eighth valve port v8 and the third valve port v3 being turned on. In this way, the cooling liquid cooled by the radiator 5 can enter the liquid cooling path F of the condenser, thereby achieving cooling for the refrigerant in the refrigerant pipeline of the condenser 3.

[0133] It is worth mentioning that since the liquid cooling path G of the photovoltaic device and the liquid cooling path A of the charging host are connected in parallel and then connected in series with the liquid cooling path F of the condenser, the cooling liquid cooled by the radiator 5 can also enter the liquid cooling path G of the photovoltaic device and the liquid cooling path 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 path G of the photovoltaic device and the liquid cooling path A of the charging host can each be connected in series with a shut-off valve, so that the corresponding shut-off valve can be opened or closed according to specific needs to connect the liquid cooling path G of the photovoltaic device and the liquid cooling path A of the charging host to the third circulating loop, which is beneficial to improve the energy efficiency of the thermal management system.

[0134] In addition, when the ambient temperature is relatively suitable (for example, in spring or autumn), the operation mode of the thermal management system can refer to FIG. 6b, which is a schematic diagram of a flow path of another operation mode of the thermal management system provided in FIG. 5. In FIG. 6b, a circulating loop is shown, which includes at least the liquid cooling path D of the battery pack, the liquid cooling path E of the power converter connected in series, the liquid cooling path I of the radiator, and the liquid cooling path F of the condenser.

[0135] The liquid cooling paths are connected through the second valve port v2 and the seventh valve port v7, v8, the third valve port v3, and the fourth valve port v4 and the first valve port v1. In this way, the cooling liquid cooled by the radiator 5 can flow through the liquid cooling path D of the battery pack, the liquid cooling path E of the power converter, and the liquid cooling path F of the condenser in sequence, thereby achieving heat dissipation of the battery pack 500 of the energy storage device and the power converter 501 of the energy storage device.

[0136] When the cable 1021 of the charging gun and the vehicle-mounted battery 200 also have heat dissipation needs, the liquid cooling path B of the charging gun and the liquid cooling path C of the vehicle-mounted battery can be connected to the above-mentioned circulating loop to use the cooling liquid cooled by the radiator 5 to cool the cable 1021 of the charging gun and the vehicle-mounted battery 200.

[0137] In addition, when the charging host 100 and the power conversion device 400 of the photovoltaic device have heat dissipation needs, the liquid cooling path A of the charging host and the liquid cooling path G of the photovoltaic device can also be connected to the above-mentioned circulating loop, so that the above-mentioned cooling liquid cooled by the radiator 5 can enter each liquid cooling path, thereby achieving heat dissipation of the charging host 100 and the power conversion device 400 of the photovoltaic device.

[0138] 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 shut-off valve of the liquid cooling path J where the indoor heat exchanger is located can be closed, and the liquid cooling path J where the indoor heat exchanger is located is not connected to the above-mentioned circulating loop, which is beneficial to improve the energy efficiency of the thermal management system.

[0139] When the ambient temperature is low (for example, in winter), the operation mode of the thermal management system can refer to FIG. 6c, which is a schematic diagram of a flow path of another operation mode of the thermal management system provided in FIG. 5. FIG. 6c shows three circulation loops:

[0140] The first circulation loop is a first refrigerant circulation loop formed by connecting the compressor 2, the refrigerant passage of the condenser 3, the first expansion valve 11, and the refrigerant passage of the first evaporator 4. That is, the condenser has a high temperature through the working principle of the heat pump, so that the condenser 3 provides heat energy.

[0141] 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, 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. The heat generated by the power converter 501 of the energy storage device can be transferred to the cooling liquid in this 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 cooling liquid in this circulation loop through the liquid cooling passage F of the condenser.

[0142] 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 cooling liquid in this circulation loop through the respective liquid cooling passages, and the heated cooling liquid flowing through the liquid cooling passage D of the battery pack can be used to heat the battery pack 500 of the energy storage device, so that the heat can be used efficiently.

[0143] In addition, in the present application, the electric heater 8 can also be turned on or off according to the specific heating needs.

[0144] It can be understood that when the on-board battery 200 has heating needs during charging, the liquid cooling passage C of the on-board battery can also be connected to the above-mentioned circulation loop to heat the on-board battery 200 using 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.

[0145] 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 for heating the user's living environment.

[0146] 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 raised through heat exchange between the radiator 5 and the first evaporator 4, so as to raise the temperature of the condenser 3.

[0147] The above is only some exemplary descriptions of the operation modes that can be achieved by the thermal management system shown in FIG. 5. On this basis, the corresponding passages can be connected by the connection between different valve ports of the eight-way valve 112, so that the thermal management system works in the corresponding operation mode. However, they are not listed one by one here, but they should be understood as falling within the protection scope of the present application.

[0148] In the present application, in addition to being provided as a multi-way valve, the valve body assembly 1 can also be provided in other possible forms. For example, referring to FIG. 7, which is another structure schematic diagram of the thermal management system provided by the embodiments of the present application. In this embodiment, the valve body assembly includes two five-way valves, which can be named as a first five-way valve 113a and a second five-way valve 113b for easy distinction. The first five-way valve 113a includes the first valve port v1, the second valve port v2, the third valve port v3, the fourth valve port v4 and the fifth valve port v5, and the second five-way valve 113b includes the sixth valve port v6, the seventh valve port v7, the eighth valve port v8, the ninth valve port v9 and the tenth valve port v10.

[0149] Compared with the above-mentioned embodiments, in the thermal management system shown in FIG. 7, the connection of the corresponding liquid cooling passages is realized by the connection of different valve ports of the two five-way valves. In addition, the other structures of the thermal management system shown in FIG. 7 can be provided by referring to the thermal management system shown in any of the above-mentioned embodiments, and will not be described here.

[0150] Next, for different application scenarios, the connection mode of each passage of the thermal management system shown in FIG. 7 and the thermal management effect that can be achieved are described.

[0151] When the ambient temperature is high (such as in high temperature and high humidity in summer), referring to FIG. 8a, which is a flow path schematic diagram of one operation mode of the thermal management system provided by FIG. 7. Among them, FIG. 8a shows four circulation loops:

[0152] The first circulation loop is a first refrigerant circulation loop formed by connecting the compressor 2, the refrigerant flow channel of the condenser 3, the first expansion valve 11 and the refrigerant flow channel of the first evaporator 4. In this scenario, the refrigerant flow channel of the first evaporator 4 can be kept at a lower temperature by the flow of the refrigerant in the first refrigerant circulation loop.

[0153] 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. In this way, the cooling liquid cooled by the first evaporator 4 can enter the liquid cooling passage D of the battery pack, so as to achieve heat dissipation of the battery pack 500 of the energy storage device.

[0154] In addition, it is worth mentioning that, since in the embodiment shown in FIG. 8a, the liquid cooling passage C of the vehicle-mounted battery and the liquid cooling passage B of the charging gun are connected in series, and the liquid cooling passage J in which the indoor heat exchanger is located is connected in parallel with the liquid cooling passage D of the battery pack, one or more of the liquid cooling passage C of the vehicle-mounted battery and the liquid cooling passage B of the charging gun connected in series and the liquid cooling passage J in which the indoor heat exchanger is located can also be connected with the liquid cooling passage H of the evaporator. In this way, the cooling liquid cooled by the first evaporator 4 can also enter one or more of the liquid cooling passage C of the vehicle-mounted battery and the liquid cooling passage B of the charging gun connected in series and the liquid cooling passage J in which the indoor heat exchanger is located, so as to achieve cooling of the vehicle-mounted battery 200, the cable 1021 of the charging gun and the user's living environment.

[0155] It can be understood that, the liquid cooling passage D of the battery pack, the liquid cooling passage C of the vehicle-mounted battery and the liquid cooling passage B of the charging gun connected in series and the liquid cooling passage J in which the indoor heat exchanger is located can all be provided with a stop valve. In this way, the corresponding stop valve can be opened or closed according to specific needs, so as 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.

[0156] 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. In this way, the cooling liquid cooled by the radiator 5 can enter the liquid cooling passage F of the condenser, so as to achieve cooling of the refrigerant in the refrigerant pipeline of the condenser 3.

[0157] In addition, 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 cooling liquid 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, so as to achieve cooling of the power conversion device 400 of the photovoltaic device and the charging host 100.

[0158] It is worth mentioning that the liquid cooling path G of the photovoltaic device and the liquid cooling path A of the charging host can be connected with a stop valve, so that the corresponding stop valve can be opened or closed according to specific needs, so as to connect the liquid cooling path G of the photovoltaic device and the liquid cooling path A of the charging host into the third circulating loop, which is beneficial to improve the energy efficiency of the thermal management system.

[0159] The fourth circulating loop includes the liquid cooling path I of the radiator and the liquid cooling path E of the power converter, wherein the liquid cooling path I of the radiator and the liquid cooling path 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. In this way, the cooling liquid cooled by the radiator 5 can enter the liquid cooling path E of the power converter, so as to realize the cooling of the power converter 501 of the energy storage device.

[0160] In addition, when the environmental temperature is relatively suitable (such as in spring or autumn), the operation mode of the thermal management system can refer to FIG. 8b, which is a flow path schematic diagram of another operation mode of the thermal management system provided in FIG. 7. In FIG. 8b, one circulating loop is shown, which includes at least the liquid cooling path D of the battery pack, the liquid cooling path I of the radiator, the liquid cooling path H of the evaporator, and the liquid cooling path E of the power converter.

[0161] In this way, the cooling liquid cooled by the radiator 5 can enter the liquid cooling path D of the battery pack, the liquid cooling path H of the evaporator, and the liquid cooling path E of the power converter, so as to realize the heat dissipation of the battery pack 500 of the energy storage device and the power converter 501 of the energy storage device.

[0162] It is worth mentioning that in this scenario, the compressor is in a closed state, and the liquid cooling path H of the evaporator is only used for the flow of the cooling liquid, that is, the first evaporator 4 is not used for refrigeration.

[0163] In addition, when the cable 1021 of the charging gun and the vehicle-mounted battery 200 have heat dissipation needs, the liquid cooling path B of the charging gun and the liquid cooling path C of the vehicle-mounted battery can also be connected into the above-mentioned circulating loop, so that the cooling liquid cooled by the radiator 5 can enter the liquid cooling path B of the charging gun and the liquid cooling path C of the vehicle-mounted battery, thereby realizing the heat dissipation of the cable 1021 of the charging gun and the vehicle-mounted battery 200.

[0164] Since in the scenario where the environmental temperature is relatively suitable, the temperature of the user's living environment is relatively comfortable, there is usually no thermal management requirement. 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 is not connected into the above-mentioned circulating loop, which is beneficial to improve the energy efficiency of the thermal management system.

[0165] When the ambient temperature is low (for example, in winter), the operation mode of the thermal management system can refer to FIG. 8c, which is a schematic diagram of a flow path of another operation mode of the thermal management system provided in FIG. 7. FIG. 8c shows a circulation loop:

[0166] The circulation loop at least includes the liquid cooling path D of the battery pack and the liquid cooling path E of the power converter. The heat generated by the power converter 501 of the energy storage device can be transferred to the cooling liquid in the circulation loop through the liquid cooling path E of the power converter, and then the heated cooling liquid flowing into the liquid cooling path D of the battery pack can be used to heat the battery pack 500 of the energy storage device, so that the heat can be efficiently utilized.

[0167] In addition, in the present application, the electric heater 8 can also be turned on or off according to the specific heating needs.

[0168] It can be understood that when the on-board battery 200 has heating needs during charging, the liquid cooling path C of the on-board 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 on-board battery 200.

[0169] 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 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 for heating the user's living environment.

[0170] In the operation mode shown in FIG. 8c, the compressor 2 is in a closed state. In actual application, when the ambient temperature is low, the first expansion valve 11 and the compressor 2 can both be set to an open state according to needs, that is, the condenser 3 has a higher temperature through the working principle of the heat pump, so as to utilize the heat energy provided by the condenser 3. In specific implementation, refer to FIG. 8d, which is a schematic diagram of a flow path of another operation mode of the thermal management system provided in FIG. 7. FIG. 8d shows four circulation loops:

[0171] 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.

[0172] The second circulation loop at least includes the liquid cooling path D of the battery pack and the liquid cooling path F of the condenser, and the liquid cooling path D of the battery pack and the liquid cooling path 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 cooling liquid in the second circulation loop, and then the cooling liquid flowing into the liquid cooling path D of the battery pack can be used to meet the heating needs of the battery pack 500 of the energy storage device.

[0173] 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.

[0174] The third circulation loop at least includes 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 which are turned on, and the first valve port v1 and the fifth valve port v5 which are turned on. 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.

[0175] The fourth circulation loop includes 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 and the liquid cooling passage I of the radiator are connected through the third valve port v3 and the second valve port v2 which are turned on, and the seventh valve port v7 and the eighth valve port v8 which are turned on. In this way, the temperature of the first evaporator 4 can be raised through heat exchange between the radiator 5 and the first evaporator 4, so as to raise the temperature of the condenser 3.

[0176] In addition, in the present application, the electric heater 8 can also be turned on or turned off according to the specific heating needs.

[0177] It can be understood that when the on-board battery 200 has heating needs during the charging process, the liquid cooling passage C of the on-board battery can also be connected to the second circulation loop and the third circulation loop, so as to use 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 on-board battery 200.

[0178] 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 and the third circulation loop to realize heating of the user's living environment.

[0179] FIG. 8e is a flow path schematic diagram of another operation mode of the thermal management system provided in FIG. 7. FIG. 8e shows four circulation loops:

[0180] The first circulation loop is a first refrigerant circulation loop formed by connecting the compressor 2, the refrigerant passage of the condenser 3, the first expansion valve 11, and the refrigerant passage of the first evaporator 4.

[0181] The second circulation loop is the same as the second circulation loop of the embodiment shown in Fig. 8d, and thus is not described herein.

[0182] The third circulation loop comprises 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 dissipating heat from the power converter 501 of the energy storage device.

[0183] The fourth circulation loop is the same as the fourth circulation loop of the embodiment shown in Fig. 8d, and thus is not described herein.

[0184] In addition, the liquid cooling passage C of the vehicle-mounted battery and the liquid cooling loop J in which the indoor heat exchanger is located can be selectively connected to the second circulation loop according to specific heating requirements, and thus is not described herein in detail.

[0185] Fig. 8f is a flow path diagram of another operation mode of the thermal management system provided in Fig. 7. Fig. 8f shows one circulation loop:

[0186] The one circulation loop comprises the liquid cooling passage D of the battery pack, the liquid cooling passage K of the electric heater, and the liquid cooling passage H of the evaporator. In this embodiment, the compressor 2 is in a closed state, but the electric heater 8 is in an open state, that is, in this embodiment, the battery pack 500 of the energy storage device is heated by the electric heater 8.

[0187] In addition, the liquid cooling passage C of the vehicle-mounted battery and the liquid cooling loop J in which the indoor heat exchanger is located can be selectively connected to the above circulation loop according to specific heating requirements, and thus is not described herein in detail.

[0188] Fig. 9 is another structural diagram of the thermal management system provided in the embodiments of the present application. In this embodiment, the valve body assembly comprises two four-way valves, which can be named as a first four-way valve 114a and a second four-way valve 114b for the convenience of distinguishing. The first four-way valve 114a comprises 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 comprises a fifth valve port v5, a sixth valve port v6, a seventh valve port v7, and an eighth valve port v8.

[0189] Compared with the thermal management system shown in Fig. 7, in the thermal management system shown in Fig. 9, the liquid cooling passage D of the battery pack and the liquid cooling passage E of the power converter are connected in series and then connected to the valve ports of the valve body assembly 1, which is beneficial to the simplification of the structure of the thermal management system.

[0190] Next, the connection mode of each passage of the thermal management system shown in FIG. 9 and the thermal management effect that can be achieved are described for different application scenarios.

[0191] When the ambient temperature is high (for example, in summer high temperature and high humidity), referring to FIG. 10a, FIG. 10a is a flow path schematic diagram of one operation mode of the thermal management system provided by FIG. 9. Among them, FIG. 10a shows three circulating loops:

[0192] The first circulating loop is a first refrigerant circulating loop formed by connecting the compressor 2, the refrigerant flow channel of the condenser 3, the first expansion valve 11 and the refrigerant flow channel of the first evaporator 4. In this scenario, the refrigerant flow in the first refrigerant circulating loop can make the refrigerant flow channel of the first evaporator 4 at a lower temperature.

[0193] The second circulating loop at least includes the passage after the liquid cooling passage D of the battery pack and the liquid cooling passage E of the power converter are connected in series and the liquid cooling passage H of the evaporator, and the passage after the liquid cooling passage D of the battery pack and the liquid cooling passage E of the power converter are connected in series and the liquid cooling passage H of the evaporator are communicated 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 way, the cooling liquid 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, so as to realize heat dissipation of the battery pack 500 of the energy storage device and the power converter 501 of the energy storage device.

[0194] In addition, it is worth mentioning that since the passage after the liquid cooling passage D of the battery pack and the liquid cooling passage E of the power converter are connected in series, the passage after the liquid cooling passage C of the vehicle-mounted battery and the liquid cooling passage B of the charging gun are connected in series, and the liquid cooling passage J where the indoor heat exchanger is located are connected in parallel, one or more of the liquid cooling passage C of the vehicle-mounted battery, the liquid cooling passage B of the charging gun and the liquid cooling passage J where the indoor heat exchanger is located can also be communicated with the liquid cooling passage H of the evaporator to realize cooling of the vehicle-mounted battery 200, the cable 1021 of the charging gun and the user's living environment by using the cooling liquid cooled by the first evaporator 4.

[0195] It can be understood that the passage after the liquid cooling passage D of the battery pack and the liquid cooling passage E of the power converter are connected in series, the passage after the liquid cooling passage C of the vehicle-mounted battery and the liquid cooling passage B of the charging gun are connected in series, and the liquid cooling passage J where the indoor heat exchanger is located can be provided with a stop valve, so that the corresponding stop valve can be opened or closed according to the specific needs, so as to connect the corresponding passage to the second circulating loop, which is beneficial to improve the energy efficiency of the thermal management system.

[0196] 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. In this way, the cooling liquid cooled by the radiator 5 can enter the liquid cooling passage F of the condenser, so as to realize the cooling of the refrigerant in the refrigerant pipeline of the condenser 3.

[0197] 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 then connected in series with the liquid cooling passage F of the condenser, the cooling liquid 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, so as to realize the 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 each be connected in series with a shut-off valve, so that the corresponding shut-off valve can be opened or closed according to specific needs, so as to connect the liquid cooling passage G of the photovoltaic device and the liquid cooling passage A of the charging host into the third circulation loop, which is beneficial to improving the energy efficiency of the thermal management system.

[0198] In addition, when the environmental temperature is relatively suitable (for example, in the case of spring or autumn), the operation mode of the thermal management system can refer to FIG. 10b, which is a flow path schematic diagram of another operation mode of the thermal management system provided in FIG. 9. In FIG. 10b, one circulation loop is shown, which includes at least 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 I of the radiator, the liquid cooling passage H of the evaporator, and the liquid cooling passage F of the condenser.

[0199] The one 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, the liquid cooling passage I of the radiator, the liquid cooling passage H of the evaporator, and the liquid cooling passage F of the condenser. In this way, the cooling liquid 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, so as to realize the cooling of the battery pack 500 of the energy storage device and the power converter 501 of the energy storage device.

[0200] It is worth mentioning that in this scenario, the compressor is in the closed state, and the liquid cooling passage H of the evaporator and the liquid cooling passage F of the condenser are only used for the flow of the cooling liquid, and are not used for refrigeration.

[0201] In addition, when the cable 1021 of the charging gun and the vehicle-mounted battery 200 have cooling requirements, the liquid cooling passage B of the charging gun and the liquid cooling passage C of the vehicle-mounted battery can also be connected into the above-mentioned circulation loop, so that the above-mentioned cooling liquid 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-mounted battery, thereby realizing the cooling of the cable 1021 of the charging gun and the vehicle-mounted battery 200.

[0202] Since the temperature of the user's living environment is comfortable in the scenario where the ambient temperature is relatively suitable, there is usually no heat management requirement. Therefore, in this scenario, the shutoff valve of the liquid cooling loop J in which the indoor heat exchanger is located can be closed, so that the liquid cooling loop J in which the indoor heat exchanger is located is not connected to the circulating loop, which is beneficial to improve the energy efficiency of the heat management system.

[0203] When the ambient temperature is low (for example, in the case of low temperature in winter), the operation mode of the heat management system can refer to FIG. 10c, which is a schematic diagram of a flow path of another operation mode of the heat management system provided in FIG. 9. FIG. 10c shows a circulating loop:

[0204] The circulating loop at least includes the liquid cooling passage D of the battery pack, the passage after the liquid cooling passages E of the power converter in series communication, and the liquid cooling passage F of the condenser. The heat generated by the power converter 501 of the energy storage device can be transmitted to the cooling liquid of the circulating loop through the liquid cooling passage E of the power converter, and the heated cooling liquid 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, so that the heat can be efficiently utilized.

[0205] In addition, the heat generated by the power conversion device 400 of the photovoltaic device can be transmitted to the cooling liquid of the circulating loop through the liquid cooling passage G of the photovoltaic device, and the heat generated by the charging host 100 can be transmitted to the cooling liquid of the circulating loop through the liquid cooling passage A of the charging host. The heated cooling liquid can also enter the liquid cooling passage D of the battery pack to heat the battery pack 500 of the energy storage device, so that the heat can be efficiently utilized.

[0206] In the present application, the electric heater 8 can also be turned on or off according to the specific heating needs.

[0207] It can be understood that when the on-board battery 200 has a heating requirement during the charging process, the liquid cooling passage C of the on-board battery can also be connected to the above-mentioned circulating loop to heat the on-board battery 200 by using 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.

[0208] In addition, when the temperature of the user's living environment is low, the liquid cooling loop J in which the indoor heat exchanger is located can also be connected to the above-mentioned circulating 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 for heating the user's living environment.

[0209] In the operation mode shown in FIG. 10c, the compressor 2 is in the closed state. In actual applications, 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 as to provide heat energy by the condenser. In specific implementation, reference can be made to FIG. 10d, which is a flow path diagram of another operation mode of the heat management system provided in FIG. 9. FIG. 10d shows four circulation loops:

[0210] The first circulation loop is a first refrigerant circulation loop formed by connecting the compressor 2, the refrigerant passage of the condenser 3, the first expansion valve 11, and the refrigerant passage of the first evaporator 4.

[0211] The second circulation loop at least includes the liquid cooling passage D of the battery pack, the liquid cooling passage E of the power converter after being 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 after being connected in series are communicated 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 cooling liquid in the second circulation loop, and the cooling liquid flowing to the liquid cooling passage D of the battery pack can be used to meet the heating demand of the battery pack 500 of the energy storage device.

[0212] 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.

[0213] 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 communicated 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 raised through heat exchange between the radiator 5 and the first evaporator 4, so as to raise the temperature of the condenser 3.

[0214] In addition, in the present application, the electric heater 8 can also be turned on or off according to the specific heating needs.

[0215] It can be understood that when the on-board battery 200 has a heating demand during the charging process, the liquid cooling passage C of the on-board battery can also be connected to the second circulation loop to heat the on-board battery 200 by using the heat generated by the condenser 3, 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.

[0216] In addition, when the temperature of the user's living environment is low, the liquid cooling loop J in which the indoor heat exchanger is located can also be connected to the second circulation loop to achieve heating of the user's living environment.

[0217] Fig. 10e is a schematic diagram of the flow path of another operating mode of the thermal management system provided in Fig. 9. Fig. 10e shows two circulation loops:

[0218] The first circulation loop includes the liquid cooling path D of the battery pack, the liquid cooling path E of the power converter connected in series, the liquid cooling path K of the electric heater, and the liquid cooling path H of the evaporator, wherein the liquid cooling path D of the battery pack, the liquid cooling path E of the power converter connected in series, the liquid cooling path K of the electric heater, and the liquid cooling path 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 a closed state, but the electric heater 8 is in an open state, that is, in this embodiment, the battery pack 500 of the energy storage device is heated by the electric heater 8.

[0219] In addition, the liquid cooling path C of the vehicle-mounted battery and the liquid cooling loop J in which the indoor heat exchanger is located can be selectively connected to the first circulation loop according to specific heating requirements, which will not be described in detail here.

[0220] The second circulation loop includes the liquid cooling path I of the radiator and the liquid cooling path F of the condenser, wherein the liquid cooling path I of the radiator and the liquid cooling path 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 path G of the photovoltaic device and the liquid cooling path A of the charging host connected in series are connected to the liquid cooling path F of the condenser, the cooling liquid cooled by the radiator 5 enters the liquid cooling path F of the condenser and then enters the liquid cooling path G of the photovoltaic device and the liquid cooling path A of the charging host, thereby achieving cooling of the power conversion device 400 of the photovoltaic device and the charging host 100.

[0221] The above is only some exemplary introduction to the specific setting mode of the thermal management system provided in the present application, and on this basis, a series of modifications 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 at least two of the liquid cooling path D of the battery pack, the liquid cooling path C of the vehicle-mounted battery, the liquid cooling path B of the charging gun, and the liquid cooling loop J in which the indoor heat exchanger is located between different groups of valve ports of the valve body assembly 1. Alternatively, in a possible embodiment, different liquid cooling paths can be connected in series or parallel and then connected to the valve ports of the valve body assembly 1 according to actual design needs. This will not be described one by one, but it should be understood as falling within the scope of protection of the present application.

[0222] In addition, in the present application, at least part of the heat management system can 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 can be arranged in the same box, so that the above-mentioned parts are transported and assembled as a whole, which is beneficial to improve the assembly efficiency of the heat management system and reduce the floor area of the heat management system. In addition, other parts of the heat management system can also be modularly designed according to specific needs, which are not listed one by one here, but should be understood as falling within the protection scope of the present application.

[0223] The above embodiments of the present application are all used for heat management of energy storage devices, photovoltaic devices, charging hosts, charging guns, vehicle-mounted batteries, and user living environments. The operation mode of the heat management system and the heat management effect that can be produced are introduced. However, based on the design principle of the heat management system provided by the present application, the heat management in at least any two application scenarios can be integrated, and even more application scenarios with heat management requirements can be integrated, so as to effectively improve the utilization rate of the heat management system while meeting the heat management requirements of the integrated scenarios, thereby improving the operation efficiency of the heat management system in each scenario.

[0224] The above is only a specific embodiment of the present application, but the protection scope of the present application is not limited thereto. Any person skilled in the art can easily think of changes or replacements within the technical scope disclosed in the present application, which should be covered within the protection scope of the present application. Therefore, the protection scope of the present application should be subject to the protection scope of the claims.

Claims

1. A light, storage, charging, vehicle thermal management system, characterized in that, The application relates to a valve body assembly and a heat dissipation device, and the valve body assembly is connected with a plurality of channels, wherein: The plurality of channels include one or more of a liquid cooling channel of a charging host, a liquid cooling channel of a charging gun, and a liquid cooling channel of an on-board battery, and the plurality of channels further include a liquid cooling channel of an energy storage device and a liquid cooling channel in which the heat dissipation device is located. The heat dissipation device is used for cooling cooling liquid flowing in the liquid cooling channel in which the heat dissipation device is located through a compressor or natural cooling; and the valve body assembly is used for controlling one or more of the plurality of channels to be communicated with the liquid cooling channel in which the heat dissipation device is located. The energy storage device is used for transmitting stored electric energy to the charging host, the charging host transmits electric energy to the charging gun, and the charging gun is used for charging the on-board battery through a cable; the liquid cooling channel of the charging gun is used for dissipating heat of the cable, and the liquid cooling channel of the on-board battery is used for dissipating heat of the on-board battery.

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

3. The thermal management system of claim 2, wherein, The plurality of channels include the liquid cooling channel of the charging gun and the liquid cooling channel of the on-board battery, and the liquid cooling channel of the charging gun and the liquid cooling channel of the on-board battery are connected in series and then connected with the valve port of the valve body assembly.

4. The thermal management system of claim 3, wherein, The plurality of channels include the liquid cooling channel of the charging host; the liquid cooling channel in which the heat dissipation device is located includes a liquid cooling channel of a condenser, a refrigerant channel of the condenser is communicated with the compressor, and the refrigerant channel of the condenser is used for heat exchange with the liquid cooling channel of the condenser; the liquid cooling channel of the charging host and the liquid cooling channel of the condenser are connected in series or in parallel and then connected with the valve port of the valve body assembly.

5. The thermal management system of claim 4, wherein, The plurality of channels further include a liquid cooling channel of a photovoltaic device, the liquid cooling channel of the photovoltaic device is used for dissipating heat of a power conversion device of the photovoltaic device; and the liquid cooling channel of the photovoltaic device and the liquid cooling channel of the charging host are connected in series or in parallel.

6. The thermal management system of claim 5, wherein, The plurality of channels further include a liquid cooling channel in which an indoor heat exchanger is located, the indoor heat exchanger is used for heat exchange with an indoor environment, and the liquid cooling channel in which the indoor heat exchanger is located is connected with the valve port of the valve body assembly.

7. The thermal management system of claim 6, wherein, When the valve body assembly controls one or more of the liquid cooling channel of the battery pack, the liquid cooling channel of the on-board battery and the liquid cooling channel of the indoor heat exchanger to be communicated with the liquid cooling channel of the condenser, the condenser is used for heating cooling liquid in the communicated liquid cooling channels.

8. The thermal management system of claim 6 or 7, wherein, When the valve body assembly controls one or more of the liquid cooling passage of the charging gun, the liquid cooling passage of the charging host, and the liquid cooling passage of the photovoltaic device to be in communication with 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 cooling liquid in the liquid cooling passage in communication.

9. The thermal management system of any of claims 6-8, wherein, When the valve body assembly controls one or more of the liquid cooling passage of the charging gun, the liquid cooling passage of the charging host, and the liquid cooling passage of the photovoltaic device to be in communication with the liquid cooling passage of the vehicle-mounted 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 cooling liquid in the liquid cooling passage in communication.

10. The thermal management system of any of claims 6-9, wherein, The liquid cooling passage where the heat dissipation device is located further comprises a liquid cooling passage of an evaporator, a refrigerant passage of the evaporator being in communication with the compressor, the refrigerant passage of the evaporator being used for heat exchange with the liquid cooling passage of the evaporator; when the valve body assembly controls one or more of the liquid cooling passage of the energy storage device, the liquid cooling passage of the vehicle-mounted 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 the liquid cooling passage where the indoor heat exchanger is located to be in communication with the liquid cooling passage of the evaporator, the evaporator is used to dissipate heat from the cooling liquid in the liquid cooling passage in communication.

11. The thermal management system of any of claims 6-10, wherein, The liquid cooling passage where the heat dissipation device is located further comprises a liquid cooling passage of a radiator, the radiator being used to cool the cooling liquid in the liquid cooling passage of the radiator by natural cooling; when the valve body assembly controls one or more of the liquid cooling passage of the energy storage device, the liquid cooling passage of the vehicle-mounted 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 the liquid cooling passage where the indoor heat exchanger is located to be in communication with the liquid cooling passage of the radiator, the radiator is used to dissipate heat from the cooling liquid in the liquid cooling passage in communication.

12. The thermal management system of any of claims 6-11, wherein, The plurality of passages further comprise a liquid cooling passage where an electric heater is located, the electric heater being used to heat the cooling liquid in the liquid cooling passage where the electric heater is located, the liquid cooling passage where the electric heater is located being connected with the valve port of the valve body assembly; when the valve body assembly controls one or more of the liquid cooling passage of the battery pack, the liquid cooling passage of the vehicle-mounted battery, and the liquid cooling passage where the indoor heat exchanger is located to be in communication with the liquid cooling passage where the electric heater is located, the electric heater is used to heat the cooling liquid in the liquid cooling passage in communication.

Images