Thermal management system and vehicle

Abstract

A thermal management system, comprising a battery cooler (141), a refrigerant loop (1), and a cooling water loop (2). The battery cooler (141) is connected to the refrigerant loop (1) and the cooling water loop (2), and is used for performing heat transfer between the refrigerant loop (1) and the cooling water loop (2). The cooling water loop (2) comprises a heater loop (11), a battery thermal management loop (12), an electric drive cooling loop (13), a heat radiator loop (14), a first control valve (15), and a second control valve (16). The first control valve and the second control valve work in conjunction with each other to switch communication approaches among the refrigerant loop, the heater loop, the battery thermal management loop, the electric drive cooling loop, and the heat radiator loop. In different temperature environments, different approaches of heat transfer are performed among the refrigerant loop, the heater loop, the battery thermal management loop, the electric drive cooling loop, and the heat radiator loop, thereby simplifying the structure of the thermal management system and reducing costs. Also disclosed is a vehicle comprising the thermal management system.

Description

Thermal management system and vehicle

[0001] This application is based on Chinese invention application No. 202411461852.0, filed on October 18, 2024, entitled "A Thermal Management System and Vehicle", and claims priority to it. Technical Field

[0002] This application relates to the field of thermal management technology, and more particularly to a thermal management system and vehicle. Background Technology

[0003] With the increasing popularity of new energy vehicles, the market has placed higher demands on their energy consumption. The vehicle thermal management system has a significant impact on overall vehicle energy consumption. Currently, the vehicle thermal management system mainly includes a heater thermal management system, a battery thermal management system, and an electric drive thermal management system. These systems can exchange heat to reduce overall vehicle energy consumption; however, existing thermal management systems have complex structures and high costs.

[0004] Application content

[0005] This application provides a thermal management system and a vehicle to solve the problems of complex structure and high cost of existing thermal management systems.

[0006] A thermal management system includes a battery cooler, a refrigerant circuit, and a cooling water circuit;

[0007] The battery cooler is connected to the refrigerant circuit and the cooling water circuit, and is used to transfer heat between the refrigerant circuit and the cooling water circuit;

[0008] The cooling water circuit includes a heater circuit, a battery thermal management circuit, an electric drive cooling circuit, a radiator circuit, a first control valve, and a second control valve;

[0009] The first control valve is connected to the second control valve, the refrigerant circuit, the heating circuit, the battery thermal management circuit, the electric drive cooling circuit, and the radiator circuit;

[0010] The second control valve is connected to the heating circuit and the battery thermal management circuit;

[0011] The first control valve and the second control valve work together to switch the connection mode between the refrigerant circuit, the heating circuit, the battery thermal management circuit, the electric drive cooling circuit and the radiator circuit, so as to achieve different heat transfer modes between the refrigerant circuit, the heating circuit, the battery thermal management circuit, the electric drive cooling circuit and the radiator circuit under different temperature environments.

[0012] Furthermore, the first control valve is a ten-way valve;

[0013] The first and fourth ends of the ten-way valve are connected to the refrigerant circuit and the second control valve.

[0014] The second and third ends of the ten-way valve are connected to the battery thermal management circuit.

[0015] The fifth and eighth ends of the ten-way valve are connected to the electric drive cooling circuit;

[0016] The sixth and seventh ends of the ten-way valve are connected by a pipe;

[0017] The ninth and tenth ends of the ten-way valve are connected to the radiator circuit.

[0018] Furthermore, the second control valve is a three-way valve;

[0019] The first end of the three-way valve is connected to the first end of the heating circuit, the second end of the three-way valve is connected to the first end of the battery thermal management circuit and the first end of the ten-way valve; the third end of the three-way valve is connected to the second end of the heating circuit, the second end of the battery thermal management circuit and the fourth end of the ten-way valve.

[0020] Furthermore, the thermal management system also includes a battery cooler; the battery cooler is connected to the refrigerant circuit and the cooling water circuit.

[0021] Furthermore, when the thermal management system is in a high-temperature environment,

[0022] The refrigerant circuit is in cooling mode;

[0023] The first control valve connects the refrigerant circuit and the battery thermal management circuit, and / or the first control valve connects the electric drive cooling circuit and the radiator circuit.

[0024] Furthermore, when the thermal management system is in a medium-temperature environment,

[0025] The refrigerant circuit is in dehumidification mode; the first control valve connects the refrigerant circuit, the battery thermal management circuit, the electric drive cooling circuit, and the radiator circuit; the second control valve disconnects the heater circuit and the battery thermal management circuit.

[0026] Alternatively, when the refrigerant circuit is in a non-operating mode, the first control valve connects the refrigerant circuit, the battery thermal management circuit, and the radiator circuit; and / or connects the electric drive cooling circuit to form an electric drive cooling self-loop.

[0027] Furthermore, when the thermal management system is in a low-temperature environment,

[0028] The refrigerant circuit is in heat pump water circuit heat absorption mode. The first control valve connects the refrigerant circuit and the battery thermal management circuit, and / or connects the electric drive cooling circuit to form an electric drive cooling self-loop; the second control valve connects the heater circuit.

[0029] Alternatively, the refrigerant circuit is in heat pump air heat absorption mode, and the first control valve is connected to the battery thermal management circuit and the electric drive cooling circuit;

[0030] Alternatively, the refrigerant circuit is in a non-operating mode, the first control valve is connected to the battery thermal management circuit, and / or the first control valve is connected to the electric drive cooling circuit; the second control valve is connected to the heater circuit and the battery thermal management circuit;

[0031] Alternatively, the refrigerant circuit is in heat pump air heat absorption mode, the first control valve is connected to the battery thermal management circuit, and / or the first control valve is connected to the electric drive cooling circuit and the radiator circuit; the second control valve is connected to the heater circuit and the battery thermal management circuit.

[0032] Furthermore, the battery thermal management circuit includes a battery inlet water temperature sensor, a battery circuit water pump, a power battery, and a battery outlet water temperature sensor;

[0033] The battery circuit water pump and the power battery are connected in series between the battery inlet water temperature sensor and the battery outlet water temperature sensor;

[0034] The battery inlet water temperature sensor is connected to the second end of the three-way valve and the second end of the ten-way valve, and the battery outlet water temperature sensor is connected to the third end of the three-way valve and the third end of the ten-way valve.

[0035] Furthermore, the electric drive cooling circuit includes an electric drive inlet water temperature sensor, an electric drive circuit water pump, an electric drive assembly, and an electric drive outlet water temperature sensor;

[0036] The electric drive circuit water pump and the electric drive assembly are connected in series between the electric drive inlet water temperature sensor and the electric drive outlet water temperature sensor;

[0037] The electric drive inlet water temperature sensor is connected to the fifth terminal of the ten-way valve, and the electric drive outlet water temperature sensor is connected to the eighth terminal of the ten-way valve.

[0038] Furthermore, the heating circuit includes a heating circuit water pump, a water heater, and a heating core;

[0039] The warm air circuit water pump, the water heater, and the warm air core are connected in series between the first and third ends of the three-way valve.

[0040] Furthermore, the refrigerant circuit includes a gas-liquid separator, a compressor, an external electronic expansion valve, a condenser branch, an evaporator branch, and an external heat exchange branch;

[0041] The first end of the gas-liquid separator is connected to the second end of the evaporator branch, the second end of the condenser branch, the second end of the external heat exchange branch, and the cooling water circuit. The second end of the gas-liquid separator is connected to the input end of the compressor. The output end of the compressor is connected to the first end of the condenser branch and the first end of the external heat exchange branch. The first end of the evaporator branch is connected to the first end of the condenser branch and the first end of the external heat exchange branch.

[0042] The external electronic expansion valve is connected to the condenser branch and the external heat exchange branch.

[0043] Furthermore, the condenser branch includes an internal cooling solenoid valve, a condenser, a condenser outlet temperature sensor, an external bypass solenoid valve, and an external bypass circuit check valve; the internal cooling solenoid valve, the condenser, the condenser outlet temperature sensor, the external bypass solenoid valve, and the external bypass circuit check valve are connected in series between the first and second ends of the condenser branch.

[0044] The external heat exchange branch includes an internal cooling bypass solenoid valve, an external heat exchanger, an external heat exchange outlet temperature sensor, and an external heat exchange loop check valve; the internal cooling bypass solenoid valve, the external heat exchanger, the external heat exchange outlet temperature sensor, and the external heat exchange loop check valve are connected in series between the first and second ends of the external heat exchange branch.

[0045] The first end of the external heat exchanger electronic expansion valve is connected to the connection node between the internal cooling bypass solenoid valve and the external heat exchanger, and the second end of the external heat exchanger electronic expansion valve is connected to the connection node between the condensate outlet temperature sensor and the external heat exchanger bypass solenoid valve.

[0046] The evaporator branch includes an evaporator electronic expansion valve, an evaporator, and an evaporator outlet temperature and pressure sensor; the evaporator electronic expansion valve, the evaporator, and the evaporator outlet temperature and pressure sensor are connected in series between the first and second ends of the evaporator branch.

[0047] A vehicle including the aforementioned thermal management system.

[0048] The aforementioned thermal management system and vehicle include a battery cooler, a refrigerant circuit, and a cooling water circuit. The battery cooler is connected to the refrigerant circuit and the cooling water circuit for heat transfer between them. The cooling water circuit includes a heater circuit, a battery thermal management circuit, an electric drive cooling circuit, a radiator circuit, a first control valve, and a second control valve. The first control valve is connected to the second control valve, the refrigerant circuit, the heater circuit, the battery thermal management circuit, the electric drive cooling circuit, and the radiator circuit. The second control valve is connected to the heater circuit and the battery thermal management circuit. The first and second control valves work together to switch the connection mode between the refrigerant circuit, the heater circuit, the battery thermal management circuit, the electric drive cooling circuit, and the radiator circuit, so as to achieve different heat transfer modes between the refrigerant circuit, the heater circuit, the battery thermal management circuit, the electric drive cooling circuit, and the radiator circuit under different temperature environments. By controlling the working state of the first and second control valves, the connection mode between the refrigerant circuit, the heater circuit, the battery thermal management circuit, the electric drive cooling circuit, and the radiator circuit is switched, thereby enabling the first and second control valves to work together to control the different heat transfer modes between the refrigerant circuit, the heater circuit, the battery thermal management circuit, the electric drive cooling circuit, and the radiator circuit, simplifying the structure of the thermal management system and reducing costs. Attached Figure Description

[0049] To more clearly illustrate the technical solutions of the embodiments of this application, the drawings used in the description of the embodiments of this application will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0050] Figure 1 is a schematic diagram of a thermal management system according to an embodiment of this application;

[0051] Figure 2 is another schematic diagram of a thermal management system according to an embodiment of this application;

[0052] Figure 3 is another schematic diagram of a thermal management system in one embodiment of this application;

[0053] Figure 4 is another schematic diagram of a thermal management system according to an embodiment of this application;

[0054] Figure 5 is another schematic diagram of a thermal management system in one embodiment of this application;

[0055] Figure 6 is another schematic diagram of a thermal management system according to an embodiment of this application;

[0056] Figure 7 is another schematic diagram of a thermal management system in one embodiment of this application;

[0057] Figure 8 is another schematic diagram of a thermal management system in one embodiment of this application;

[0058] Figure 9 is another schematic diagram of a thermal management system in one embodiment of this application. Detailed Implementation

[0059] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0060] It should be understood that this application can be implemented in various forms and should not be construed as being limited to the embodiments set forth herein. Rather, providing these embodiments will make the disclosure thorough and complete, and will fully convey the scope of this application to those skilled in the art. In the drawings, for clarity, the dimensions and relative dimensions of layers and regions may be exaggerated. The same reference numerals denote the same elements throughout.

[0061] It should be understood that when an element or layer is referred to as "on," "adjacent to," "connected to," or "coupled to" other elements or layers, it may be directly on, adjacent to, connected to, or coupled to other elements or layers, or there may be intervening elements or layers. Conversely, when an element is referred to as "directly on," "directly adjacent to," "directly connected to," or "directly coupled to" other elements or layers, there are no intervening elements or layers. It should be understood that although the terms first, second, third, etc., may be used to describe various elements, components, areas, layers, and / or portions, these elements, components, areas, layers, and / or portions should not be limited by these terms. These terms are only used to distinguish one element, component, area, layer, or portion from another element, component, area, layer, or portion. Therefore, without departing from the teachings of this application, the first element, component, area, layer, or portion discussed below may be referred to as a second element, component, area, layer, or portion.

[0062] Spatial relation terms such as “below,” “under,” “below,” “under,” “above,” “above,” etc., are used herein for convenience of description to describe the relationship between one element or feature shown in the figure and other elements or features. It should be understood that, in addition to the orientation shown in the figure, spatial relation terms are intended to also include different orientations of the device in use and operation. For example, if the device in the figure is flipped, then the element or feature described as “below,” “under,” or “below” other elements or features will be oriented “above” other elements or features. Therefore, the exemplary terms “below” and “under” can include both above and below orientations. The device may be otherwise oriented (rotated 90 degrees or otherwise) and the spatial descriptive terms used herein will be interpreted accordingly.

[0063] The terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the scope of this application. When used herein, the singular forms “a,” “an,” and “the” are also intended to include the plural forms unless the context clearly indicates otherwise. It should also be understood that the terms “comprising” and / or “including,” when used in this specification, identify the presence of the stated features, integers, steps, operations, elements, and / or components, but do not exclude the presence or addition of one or more other features, integers, steps, operations, elements, components, and / or groups. When used herein, the term “and / or” includes any and all combinations of the associated listed items.

[0064] To fully understand this application, detailed structures and steps will be presented in the following description to illustrate the technical solutions proposed in this application. Preferred embodiments of this application are described in detail below; however, in addition to these detailed descriptions, this application may have other implementation methods.

[0065] This embodiment provides a thermal management system applied in a vehicle. Exemplarily, the vehicle includes a passenger compartment, a battery module, and an electric drive module. Exemplarily, the battery module includes a power battery 112. The electric drive module includes an electric drive assembly 132. Optionally, the electric drive assembly 132 includes a drive motor, a differential reducer, a motor controller, an on-board charger, and a DC-DC converter. The thermal management system, applied in the vehicle, manages the thermal performance of the passenger compartment, battery module, and electric drive module to achieve heat transfer between them under different temperature environments, reducing overall vehicle power consumption. Exemplarily, the temperature environment includes a high-temperature environment, a medium-temperature environment, and a low-temperature environment. Exemplarily, the high-temperature environment has an ambient temperature above 40 degrees Celsius. The medium-temperature environment has an ambient temperature between 15 degrees Celsius and 40 degrees Celsius. The low-temperature environment has an ambient temperature below 15 degrees Celsius.

[0066] This embodiment provides a thermal management system, as shown in FIG1, including a battery cooler 141, a refrigerant circuit 1, and a cooling water circuit 2; the battery cooler 141 is connected to the refrigerant circuit 1 and the cooling water circuit 2, and is used for heat transfer between the refrigerant circuit 1 and the cooling water circuit 2. The cooling water circuit 2 includes a heater circuit 11, a battery thermal management circuit 12, an electric drive cooling circuit 14, a radiator circuit 14, a first control valve 15, and a second control valve 16. The first control valve 15 is connected to the second control valve, the refrigerant circuit 1, the heater circuit 11, the battery thermal management circuit 12, the electric drive cooling circuit 14, and the radiator circuit 14. The second control valve 16 is connected to the heater circuit 11 and the battery thermal management circuit 12. The first control valve 15 and the second control valve 16 work together to switch the connection mode between the refrigerant circuit 1, the heater circuit 11, the battery thermal management circuit 12, the electric drive cooling circuit 14, and the radiator circuit 14, so as to achieve different heat transfer modes between the refrigerant circuit 1, the heater circuit 11, the battery thermal management circuit 12, the electric drive cooling circuit 14, and the radiator circuit 14 under different temperature environments.

[0067] In this embodiment, by connecting the first control valve 15 to the second control valve, refrigerant circuit 1, heating circuit 11, battery thermal management circuit 12, electric drive cooling circuit 14, and radiator circuit 14, and connecting the second control valve 16 to the heating circuit 11 and battery thermal management circuit 12, the connection mode between the refrigerant circuit 1, heating circuit 11, battery thermal management circuit 12, electric drive cooling circuit 14, and radiator circuit 14 can be switched by controlling the working state of the first control valve 15 and the second control valve 16. This allows the first control valve 15 and the second control valve 16 to cooperate in controlling different heat transfer modes between the refrigerant circuit 1, heating circuit 11, battery thermal management circuit 12, electric drive cooling circuit 14, and radiator circuit 14, thereby simplifying the structure of the thermal management system and reducing costs.

[0068] In one embodiment, as shown in FIG2, the first control valve 15 is a ten-way valve 101; the first and fourth ends of the ten-way valve 101 are connected to the refrigerant circuit 1 and the second control valve 16; the second and third ends of the ten-way valve 101 are connected to the battery thermal management circuit 12; the fifth and eighth ends of the ten-way valve 101 are connected to the electric drive cooling circuit 14; the sixth and seventh ends of the ten-way valve 101 are connected by pipes; and the ninth and tenth ends of the ten-way valve 101 are connected to the radiator circuit 14.

[0069] As an example, the first and fourth ends of the ten-way valve 101 are connected to the refrigerant circuit 1 via the battery cooler 141. In this example, the first and fourth ends of the ten-way valve 101 are connected to the refrigerant circuit 1 via the battery cooler 141 so that the battery thermal management circuit 12, the electric drive cooling circuit 14, and the radiator circuit 14 connected to the ten-way valve 101, as well as the warm air circuit 11 connected to the second control valve 16, can exchange heat with the refrigerant circuit 1 via the battery cooler 141.

[0070] As an example, the battery thermal management circuit 12 includes a battery inlet water temperature sensor 110, a battery circuit water pump 111, a power battery 112, and a battery outlet water temperature sensor 113. The battery thermal management circuit 12 is also used to connect the vehicle's battery module. Exemplarily, the battery module and the battery circuit water pump 111 are connected in series between the battery inlet water temperature sensor 110 and the battery outlet water temperature sensor 113. The battery inlet water temperature sensor 110 is connected to the second end of a ten-way valve 101, and the battery outlet water temperature sensor 113 is connected to the third end of the ten-way valve 101. In this example, the power battery 112 needs to be maintained within a specified temperature range during operation. Therefore, under different temperature environments, the power battery 112 needs to be cooled or heated to ensure its operating efficiency. Exemplarily, in low-temperature environments, the power battery 112 generates heat when discharging externally. This heat can also be used to heat the passenger compartment through the refrigerant circuit 1 or the cooling water circuit 2, reducing the energy consumption required for heating the passenger compartment. The battery inlet water temperature sensor 110 and the battery outlet water temperature sensor 113 are used to detect the water temperature at the inlet and outlet of the power battery 112, and are used in the thermal management system for water temperature control, thermal runaway protection and other control strategies.

[0071] As an example, as shown in Figure 2, the electric drive cooling circuit 14 includes an electric drive inlet water temperature sensor 130, an electric drive circuit water pump 131, an electric drive assembly 132, and an electric drive outlet water temperature sensor 133. The electric drive assembly 132 and the electric drive circuit water pump 131 are connected in series between the electric drive inlet water temperature sensor 130 and the electric drive outlet water temperature sensor 133. The electric drive inlet water temperature sensor 130 is connected to the fifth terminal of the ten-way valve 101, and the electric drive outlet water temperature sensor 133 is connected to the eighth terminal of the ten-way valve 101. Exemplarily, the electric drive assembly 132 needs to be maintained below the maximum allowable operating temperature to ensure vehicle safety; therefore, cooling is required when the temperature of the electric drive assembly 132 is too high. Simultaneously, the lubricating oil in the differential reducer of the electric drive assembly 132 has a higher viscosity at low temperatures, which reduces efficiency; therefore, prolonged operation at low temperatures should be avoided. Therefore, it is also necessary to control the operating states of the first control valve 15 and the second control valve 16 to ensure that the thermal management system controls the electric drive assembly 132 to operate within a suitable temperature range. The electric drive circuit water pump 131 is used to drive the coolant flow in the thermal management system. The electric drive inlet water temperature sensor 130 and the electric drive outlet water temperature sensor 133 are used to detect the water temperature at the inlet and outlet of the electric drive assembly 132, which is used by the thermal management system for water temperature control, thermal protection, and other control strategies.

[0072] As an example, as shown in Figure 2, the radiator circuit 14 includes a radiator 150. Exemplarily, the radiator 150 is a liquid-gas heat exchanger used to dissipate heat from the coolant into the ambient air, thereby reducing the temperature of the coolant.

[0073] In this embodiment, by switching the on or off states between different ports of the ten-way valve 101, the refrigerant circuit 1, the second control valve 16, the battery thermal management circuit 12, the electric drive cooling circuit 14, and the radiator circuit 14 can be interconnected, thereby flexibly carrying out heat exchange between different circuits. At the same time, the structure is simple and the cost is low.

[0074] In one embodiment, as shown in FIG2, the second control valve 16 is a three-way valve 123; the first end of the three-way valve 123 is connected to the first end of the heating circuit 11, the second end of the three-way valve 123 is connected to the first end of the battery thermal management circuit 12 and the first end of the ten-way valve 101; the third end of the three-way valve 123 is connected to the second end of the heating circuit 11, the second end of the battery thermal management circuit 12 and the fourth end of the ten-way valve 101.

[0075] As an example, a heating circuit 11 is installed in the passenger compartment of a vehicle to provide heating to the passenger compartment. Exemplarily, the heating circuit 11 includes a heating circuit water pump 120, a water heater 121, and a heating core 122. The heating circuit water pump 120, water heater 121, and heating core 122 are connected in series between the first and third ends of a three-way valve 123. Exemplarily, the water heater 121 may be, for example, a PCT resistor. Exemplarily, the water heater 121 can heat the coolant flowing through the internal pipes of the heating circuit 11 by consuming electrical energy from the vehicle's power battery 112, and the coolant can also heat other components, including the power battery 112. The heating core 122 is a gas-liquid heat exchanger that can transfer the heat from the heated coolant within the flow channels of the heating core 122 to the air on the surface of the heating core 122 to heat the air, which is then used to heat the passenger compartment, thereby providing heating to the passenger compartment. The heating circuit water pump 120 drives the coolant to flow within the pipes.

[0076] As an example, the battery inlet water temperature sensor 110 in the battery thermal management circuit 12 is connected to the second end of the three-way valve 123, and the battery outlet water temperature sensor 113 in the battery thermal management circuit 12 is connected to the third end of the three-way valve 123. The second and third ends of the three-way valve 123 are also connected to the first and fourth ends of the ten-way valve 101, respectively.

[0077] In this embodiment, by switching the on or off states between different ports of the three-way valve 123, the heating circuit 11, the battery management circuit, and the first control valve 15 can be interconnected. Then, the heat exchange between different circuits can be flexibly switched through the first control valve 15 and the second control valve 16. At the same time, the structure is simple and the cost is low.

[0078] In one embodiment, as shown in FIG2, the thermal management system further includes a battery cooler 141; the battery cooler 141 is connected to the refrigerant circuit 1 and the cooling water circuit 2.

[0079] As an example, the first end of the battery cooler 141 is connected to the refrigerant circuit 1 via a cooler electronic expansion valve, and the second end of the battery cooler 141 is connected to the cooling water circuit 2 via a cooler inlet water temperature sensor. In this example, the battery cooler 141 is structurally a liquid-liquid heat exchanger, enabling heat exchange between the refrigerant and the coolant, primarily used for cooling the power battery 112. Exemplarily, the battery cooler 141 can absorb heat from the cooling water circuit 2 and exchange heat with the refrigerant circuit 1, thereby utilizing the heat absorbed by the battery cooler 141 to provide heat to the passenger compartment. The cooler inlet water temperature sensor is used to detect the inlet water temperature of the battery cooler 141, and is used in the control logic of the battery circuit water pump 111 and heat pump waste heat recovery control in the battery thermal management circuit 12.

[0080] In one embodiment, when the thermal management system is in a high-temperature environment, the refrigerant circuit 1 is in a cooling mode; the first control valve 15 connects the refrigerant circuit 1 and the battery thermal management circuit 12, and / or the first control valve 15 connects the electric drive cooling circuit 14 and the radiator circuit 14.

[0081] In this embodiment, when the thermal management system is in a high-temperature environment, such as above 40 degrees Celsius, the refrigerant circuit 1 can be controlled to be in a cooling mode. When the first control valve 15 connects the refrigerant circuit 1 and the battery thermal management circuit 12, heat exchange can be achieved between the refrigerant circuit 1 in cooling mode and the battery thermal management circuit 12. As shown in Figure 3, the battery circuit water pump 111 in the battery thermal management circuit 12 drives the coolant to flow, passing through the power battery 112 and carrying away the heat of the power battery 112. Then, it flows through the battery outlet water temperature sensor 113, the ten-way valve 101, the cooler inlet water temperature sensor, and the battery cooler 141, and is cooled by the low-temperature refrigerant in the battery cooler 141, reducing the coolant temperature. Then, it returns to the battery circuit water pump 111 through the ten-way valve 101 and the battery inlet water temperature sensor 110. Through this cycle, the temperature of the power battery 112 is reduced by utilizing the battery cooler 141. Meanwhile, the electric drive circuit water pump 131 in the electric drive cooling circuit 14 drives the coolant to flow through the electric drive assembly 132 of the vehicle, carrying away the heat of the electric drive assembly 132. Through the electric drive outlet water temperature sensor 133, the ten-way valve 101 and the radiator 150, the coolant is cooled by the air flowing through the fins of the radiator 150. Then, through the ten-way valve 101 and the electric drive inlet water temperature sensor 130, it returns to the electric drive circuit water pump 131. Through this cycle, the temperature of the electric drive assembly 132 is reduced by the radiator 150.

[0082] In this embodiment, when the thermal management system is in a high-temperature environment, the refrigerant circuit 1 is in a cooling mode; the first control valve 15 connects the refrigerant circuit 1 and the battery thermal management circuit 12, and / or the first control valve 15 connects the electric drive cooling circuit 14 and the radiator circuit 14, thereby flexibly controlling the thermal management system and using the refrigerant circuit 1 and the radiator circuit 14 to dissipate heat from the battery thermal management circuit 12 and the electric drive cooling circuit 14, respectively.

[0083] In one embodiment, when the thermal management system is in a medium-temperature environment, the refrigerant circuit 1 is in dehumidification mode; the first control valve 15 connects the refrigerant circuit 1, the battery thermal management circuit 12, the electric drive cooling circuit 14, and the radiator circuit 14; the second control valve 16 disconnects the heating circuit 11 and the battery thermal management circuit 12; or, when the refrigerant circuit 1 is in a non-operating mode, the first control valve 15 connects the refrigerant circuit 1, the battery thermal management circuit 12, and the radiator circuit 14; and / or connects the electric drive cooling circuit 14 to form an electric drive cooling self-loop.

[0084] As an example, when the thermal management system is in a medium temperature environment, such as between 15 degrees Celsius and 40 degrees Celsius, the refrigerant circuit 1 is in dehumidification mode, the first control valve 15 connects the refrigerant circuit 1, the battery thermal management circuit 12, the electric drive cooling circuit 14 and the radiator circuit 14; the second control valve 16 disconnects the heating circuit 11 and the battery thermal management circuit 12. As shown in Figure 4, the electric drive circuit water pump 131 drives the coolant to flow through the electric drive assembly 132, carrying away the heat from the electric drive assembly 132. The coolant then flows through the electric drive outlet water temperature sensor 133, the ten-way valve 101, the cooler inlet water temperature sensor, the battery cooler 141, and the ten-way valve 101, entering the battery thermal management circuit 12 where the power battery 112 is located. In the battery thermal management circuit 12, the battery circuit water pump 111 continues to drive the coolant to flow through the power battery 112, carrying away the heat from the power battery 112. The coolant then flows through the battery outlet water temperature sensor 113 and the ten-way valve 101, entering the radiator 150 for cooling. Finally, it passes through the ten-way valve 101 and the electric drive inlet water temperature sensor, returning to the electric drive circuit water pump 131, completing the cycle. Through this cycle, the heat from the power battery 112 and the electric drive assembly 132 is transferred to the environment through the radiator 150, achieving cooling. Understandably, when the thermal management system is in a medium-temperature environment, such as in spring and autumn when the vehicle is driving under low load, the power battery 112 and the electric drive assembly 132 do not generate much heat, and can be cooled by the radiator 150 at the same time, thereby reducing the energy consumption of the whole vehicle.

[0085] As another example, when the thermal management system is in a medium-temperature environment, the refrigerant circuit 1 is in a non-operating mode. The first control valve 15 connects the refrigerant circuit 1, the battery thermal management circuit 12, and the radiator circuit 14; and / or connects the electric drive cooling circuit 14 to form an electric drive cooling self-loop. As shown in Figure 5, the battery circuit water pump 111 drives the coolant to flow through the power battery 112, carrying away the heat of the power battery 112. Then it flows through the battery outlet water temperature sensor 113, the ten-way valve 101, the cooler inlet water temperature sensor, the battery cooler 141, and the ten-way valve 101. Then it is cooled in the radiator 150, and the coolant temperature decreases. Then it returns to the battery circuit water pump 111 through the ten-way valve 101 and the battery inlet water temperature sensor 110. Through this cycle, the heat of the power battery 112 is discharged into the environment through the radiator 150. For the electric drive cooling circuit 14, the electric drive circuit water pump 131 drives the coolant to flow through the electric drive assembly 132, then through the electric drive circuit water pump 131 and the electric drive inlet water temperature sensor 130, before returning to the electric drive circuit water pump 131. Through this cycle, the heat from the electric drive assembly 132 is transferred to the coolant, slowly heating it and achieving heat storage. In this example, when the thermal management system is in a medium-temperature environment, the power battery 112 is cooled by the radiator 150, and the electric drive assembly 132 stores heat through self-circulation. For example, when the vehicle is fast charging the power battery 112, the power battery 112 heats up intensely during fast charging. The radiator 150 lowers the temperature of the power battery 112, which significantly reduces the energy consumption of the thermal management system compared to using the compressor 201 in the refrigerant circuit 1 to cool the power battery 112.

[0086] In one embodiment, when the thermal management system is in a low-temperature environment, the refrigerant circuit 1 is in heat pump water circuit heat absorption mode, and the first control valve 15 connects the refrigerant circuit 1 and the battery thermal management circuit 12, and / or connects the electric drive cooling circuit 14 to form an electric drive cooling self-loop; the second control valve 16 connects the warm air circuit 11; or, the refrigerant circuit 1 is in heat pump air heat absorption mode, and the first control valve 15 connects the battery thermal management circuit 12 and the electric drive cooling circuit 14; or, the refrigerant circuit 1 is in a non-operating mode, and the first control valve 15 connects the battery thermal management circuit 12, and / or connects the electric drive cooling circuit 14; the second control valve 16 connects the warm air circuit 11 and the battery thermal management circuit 12; or, the refrigerant circuit 1 is in heat pump air heat absorption mode, and the first control valve 15 connects the battery thermal management circuit 12, and / or connects the electric drive cooling circuit 14 and the radiator circuit 14; the second control valve 16 connects the warm air circuit 11 and the battery thermal management circuit 12.

[0087] As an example, when the thermal management system is in a low-temperature environment, the refrigerant circuit 1 is in the heat pump water circuit heat absorption mode. The first control valve 15 connects the refrigerant circuit 1 and the battery thermal management circuit 12, and / or connects the electric drive cooling circuit 14 to form an electric drive cooling self-loop; the second control valve 16 connects the warm air circuit 11. As shown in Figure 6, the battery circuit water pump 111 drives the coolant to flow through the power battery 112, carrying away the heat from the power battery 112. Then, it flows through the battery outlet water temperature sensor 113, the ten-way valve 101, the cooler inlet water temperature sensor, and the battery cooler 141. In the battery cooler 141, it is cooled by the low-temperature refrigerant, and the coolant temperature decreases. Then, it returns to the battery circuit water pump 111 through the ten-way valve 101 and the battery inlet water temperature sensor 110. Through this cycle, the battery cooler 141 absorbs the heat from the power battery 112. The heat from the power battery 112 is transferred to the refrigerant in the battery cooler 141 through cooling, and then transferred to the passenger compartment through the refrigerant circuit 1. Simultaneously, the electric drive circuit water pump 131 operates, driving the coolant to flow through the electric drive assembly 132, then through the electric drive outlet water temperature sensor 133 and the electric drive inlet water temperature sensor 130, returning to the electric drive circuit water pump 131. Through this cycle, the heat from the electric drive assembly 132 is transferred to the coolant, slowly heating it and achieving heat storage. At the same time, the second control valve 16 connects the heating circuit 11 and the battery thermal management circuit 12, putting the heating circuit 11 into operation, i.e., turning on the passenger compartment air conditioning for heating. In this example, when the thermal management system is in a low-temperature environment, the heat pump in the refrigerant circuit 1 absorbs the heat from the power battery 112 to heat the passenger compartment, while the electric drive assembly 132 self-circulates to store heat. For example, if the vehicle is fast charging the power battery 112 while the passenger compartment air conditioning is on, the power battery 112 heats up intensely during fast charging, and the heat pump air conditioning absorbs this heat to heat the passenger compartment, thus saving overall vehicle energy.

[0088] As another example, when the thermal management system is in a low-temperature environment, refrigerant circuit 1 is in heat pump air absorption mode, and the first control valve 15 connects the battery thermal management circuit 12 and the electric drive cooling circuit 14. As shown in Figure 7, the electric drive circuit water pump 131 drives the coolant to flow, passing through the electric drive assembly 132, carrying away the heat within it. It then flows through the electric drive outlet water temperature sensor 133, the ten-way valve 101, the cooler inlet water temperature sensor, the battery cooler 141, the ten-way valve 101, the battery inlet water temperature sensor 110, and the battery circuit water pump 111. Next, it flows through the power battery 112, where the coolant heats the power battery 112. It then flows through the battery outlet water temperature sensor 113, the ten-way valve 101, and the electric drive inlet water temperature sensor 130, finally returning to the electric drive circuit water pump 131, completing the cycle. Through this cycle, the power battery 112 absorbs the heat from the electric drive assembly 132. Simultaneously, refrigerant circuit 1 is in heat pump air absorption mode to heat the air in the passenger compartment. In this embodiment, when the thermal management system is in a low-temperature environment, the power battery 112 absorbs heat from the electric drive assembly 132, and the passenger compartment uses a heat pump air conditioning system to absorb heat from the air for heating. For example, when the vehicle is traveling at high speed, the electric drive assembly 132 generates a lot of waste heat during the process of driving the vehicle. The power battery 112 absorbs this waste heat for heating, while the passenger compartment uses a heat pump air conditioning system to absorb heat from the air.

[0089] As another example, when the thermal management system is in a low-temperature environment, the refrigerant circuit 1 is in a non-operating mode. The first control valve 15 is connected to the battery thermal management circuit 12, and / or the first control valve 15 is connected to the electric drive cooling circuit 14; the second control valve 16 is connected to the heater circuit 11 and the battery thermal management circuit 12. As shown in Figure 8, the heater circuit water pump 120 drives the coolant to flow, which flows through the water heater 121 and is heated by it, increasing its temperature. Then it flows through the heater core 122, heating the air in the passenger compartment flowing through the fins of the heater core 122. Then it flows through the three-way valve 123, which can guide this part of the high-temperature coolant to two outlets in proportion. The coolant at one outlet returns directly to the heater water pump inlet, while the coolant at the other outlet flows into the battery thermal management circuit 12 to heat the power battery 112. Simultaneously, the battery circuit water pump 111 operates to drive the coolant flow, which flows through the power battery 112, heating the power battery 112. Then, it flows through the battery outlet water temperature sensor 113, and the coolant is divided into two paths. One path passes through the battery inlet water temperature sensor 110 and returns to the battery circuit water pump 111, while the other path enters the heating circuit 11 to be heated. Thus, through the three-way valve 123, the water heater 121 can simultaneously heat the power battery 112 and the passenger compartment. Understandably, the opening of the three-way valve 123 can be adjusted to regulate the proportion of hot water distributed to the battery thermal management circuit, thereby achieving the purpose of energy distribution. Simultaneously, the electric drive circuit water pump 131 operates to drive the coolant to flow, passing through the electric drive assembly 132, and then through the electric drive outlet water temperature sensor 133, the ten-way valve 101, the cooler inlet water temperature sensor, the battery cooler 141, the ten-way valve 101, and the electric drive inlet water temperature sensor 130, before returning to the electric drive circuit water pump 131. Through this cycle, the heat from the electric drive assembly 132 is transferred to the coolant, and the coolant is slowly heated to achieve heat storage.

[0090] As another example, when the thermal management system is in a low-temperature environment, the refrigerant circuit 1 is in heat pump air heat absorption mode. The first control valve 15 is connected to the battery thermal management circuit 12, and / or the first control valve 15 is connected to the electric drive cooling circuit 14 and the radiator circuit 14; the second control valve 16 is connected to the warm air circuit 11 and the battery thermal management circuit 12. As shown in Figure 9, the warm air water pump drives the coolant to flow, which flows through the water heater 121 and is heated by it, increasing its temperature. Then it flows through the warm air core 122 and the three-way valve 123. After that, the battery circuit water pump 111 drives the coolant to flow, which flows through the power battery 112 and heats the power battery 112. Then it flows through the battery outlet water temperature sensor 113 and splits into two paths. One path returns to the inlet of the warm air water pump, and the other path passes through the ten-way valve 101 and the battery inlet water temperature sensor 110 before returning to the inlet of the battery circuit water pump 111. The flow rate of hot water flowing through the power battery 112 can be adjusted by adjusting the flow rates of the warm air water pump and the battery circuit water pump 111. Simultaneously, the electric drive circuit water pump 131 drives the coolant to flow through the vehicle's electric drive assembly 132, carrying away the heat from the electric drive assembly 132. The coolant then flows back to the electric drive circuit water pump 131 through the electric drive outlet water temperature sensor 133, the ten-way valve 101, the cooler inlet water temperature sensor, the battery cooler 141, the ten-way valve 101, the radiator 150, and the electric drive inlet water temperature sensor 130. Through this cycle, the radiator 150 dissipates the heat generated by the electric drive assembly 132 into the environment, which is beneficial for the refrigerant circuit 1 to heat the cabin air temperature in the heat pump air absorption mode.

[0091] In one embodiment, as shown in FIG2, the refrigerant circuit 1 includes a gas-liquid separator 220, a compressor 201, an external heat exchanger electronic expansion valve 207, a condenser branch 205, an evaporator branch 215, and an external heat exchanger branch. The first end of the gas-liquid separator 220 is connected to the second end of the evaporator branch 215, the second end of the condenser branch 205, the second end of the external heat exchanger branch, and the cooling water circuit 2. The second end of the gas-liquid separator 220 is connected to the input end of the compressor 201. The output end of the compressor 201 is connected to the first end of the condenser branch 205 and the first end of the external heat exchanger branch. The first end of the evaporator branch 215 is connected to the cooling water circuit 2. The first end of the condenser 205 branch is connected to the first end of the external heat exchange branch; the external heat exchange electronic expansion valve 207 is connected to the condenser 205 branch and the external heat exchange branch; the condenser 205 branch includes an internal cooling solenoid valve 204 and an external heat exchange bypass solenoid valve 211; the evaporator 215 branch includes an evaporator 215 electronic expansion valve 214; the external heat exchange branch includes an internal cooling bypass solenoid valve 203 and an external heat exchange circuit check valve 210; the internal cooling solenoid valve 204, the external heat exchange bypass solenoid valve 211, the evaporator 215 electronic expansion valve 214, the internal cooling bypass solenoid valve 203, and the external heat exchange circuit check valve 210 are used to control the working mode of the refrigerant circuit 1.

[0092] As an example, the first end of the gas-liquid separator 220 is connected to the second end of the evaporator 215 branch, the second end of the condenser 205 branch, the second end of the external heat exchange branch, and the cooling water circuit 2 via the gas inlet temperature and pressure sensor 219. An evaporator 215 bypass solenoid valve 213 is also provided between the gas inlet temperature and pressure sensor 219 and the second end of the condenser 205 branch and the second end of the external heat exchange branch. The output end of the compressor 201 is connected to the first end of the condenser 205 branch and the first end of the external heat exchange branch via the compressor 201 outlet temperature and pressure sensor 202.

[0093] As an example, as shown in Figure 2, the condenser 205 branch includes an internal cooling solenoid valve 204, a condenser 205, a condenser outlet temperature sensor 206, an external heat exchange bypass solenoid valve 211, and an external heat exchange bypass loop check valve 212. The internal cooling solenoid valve 204, condenser 205, condenser outlet temperature sensor 206, external heat exchange bypass solenoid valve 211, and external heat exchange bypass loop check valve 212 are connected in series between the first and second ends of the condenser 205 branch. The external heat exchange branch includes an internal cooling bypass solenoid valve 203, an external heat exchanger 208, an external heat exchange outlet temperature sensor 209, and an external heat exchange loop check valve 210. The internal cooling bypass solenoid valve 203, external heat exchanger 208, external heat exchange outlet temperature sensor 209, and external heat exchange loop check valve 210 are connected in series between the first and second ends of the external heat exchange branch. The first end of the external heat exchanger electronic expansion valve 207 is connected to the connection node between the internal cooling bypass solenoid valve 203 and the external heat exchanger 208, and the second end of the external heat exchanger electronic expansion valve 207 is connected to the connection node between the condenser outlet temperature sensor 206 and the external heat exchanger bypass solenoid valve 211. The evaporator 215 branch includes the evaporator 215 electronic expansion valve 214, the evaporator 215, and the evaporator outlet temperature and pressure sensor 216. The evaporator 215 electronic expansion valve 214, the evaporator 215, and the evaporator outlet temperature and pressure sensor 216 are connected in series between the first and second ends of the evaporator 215 branch.

[0094] Furthermore, as shown in Figure 3, when the internal cooling bypass solenoid valve 203, the external switching circuit check valve 210, and the evaporator 215 electronic expansion valve 214 are open, and the internal cooling solenoid valve 204 and the external switching bypass solenoid valve 211 are closed, the refrigerant circuit 1 is in the cooling mode.

[0095] As shown in Figure 4, when the internal cooling bypass solenoid valve 203 and the external exchange circuit check valve 210 are closed, and the evaporator 215 electronic expansion valve 214, the internal cooling solenoid valve 204 and the external exchange bypass solenoid valve 211 are open, the refrigerant circuit 1 is in dehumidification mode.

[0096] As shown in Figure 5, when the internal cooling bypass solenoid valve 203 and the external replacement circuit check valve 210 are closed, the internal cooling solenoid valve 204 and the external replacement bypass solenoid valve 211 are open, and the evaporator 215 electronic expansion valve 214 is closed, the external replacement electronic expansion valve 207 is closed, the refrigerant circuit 1 is in the heat pump water circuit heat absorption mode.

[0097] As shown in Figure 7, when the internal cooling bypass solenoid valve 203, the external cooling bypass solenoid valve 211, and the evaporator 215 electronic expansion valve 214 are closed, and the external cooling circuit check valve 210 and the internal cooling solenoid valve 204 are open, the refrigerant circuit 1 is in the heat pump air heat absorption mode.

[0098] This embodiment provides a vehicle including the thermal management system described above.

[0099] The above-described embodiments are only used to illustrate the technical solutions of this application, and are not intended to limit them. Although this application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of this application, and should all be included within the protection scope of this application.

Claims

1. A thermal management system, wherein, This includes the battery cooler, refrigerant circuit, and cooling water circuit; The battery cooler is connected to the refrigerant circuit and the cooling water circuit, and is used to transfer heat between the refrigerant circuit and the cooling water circuit; The cooling water circuit includes a heater circuit, a battery thermal management circuit, an electric drive cooling circuit, a radiator circuit, a first control valve, and a second control valve; The first control valve is connected to the second control valve, the refrigerant circuit, the heating circuit, the battery thermal management circuit, the electric drive cooling circuit, and the radiator circuit; The second control valve is connected to the heating circuit and the battery thermal management circuit; The first control valve and the second control valve work together to switch the connection mode between the refrigerant circuit, the heating circuit, the battery thermal management circuit, the electric drive cooling circuit and the radiator circuit, so as to achieve different heat transfer modes between the refrigerant circuit, the heating circuit, the battery thermal management circuit, the electric drive cooling circuit and the radiator circuit under different temperature environments.

2. The thermal management system of claim 1, wherein, The first control valve is a ten-way valve; The first and fourth ends of the ten-way valve are connected to the refrigerant circuit and the second control valve. The second and third ends of the ten-way valve are connected to the battery thermal management circuit. The fifth and eighth ends of the ten-way valve are connected to the electric drive cooling circuit; The sixth and seventh ends of the ten-way valve are connected by a pipe; The ninth and tenth ends of the ten-way valve are connected to the radiator circuit.

3. The thermal management system of claim 2, wherein, The second control valve is a three-way valve; The first end of the three-way valve is connected to the first end of the heating circuit, the second end of the three-way valve is connected to the first end of the battery thermal management circuit and the first end of the ten-way valve; the third end of the three-way valve is connected to the second end of the heating circuit, the second end of the battery thermal management circuit and the fourth end of the ten-way valve.

4. The thermal management system of claim 1, wherein, When the thermal management system is in a high-temperature environment, The refrigerant circuit is in cooling mode; The first control valve connects the refrigerant circuit and the battery thermal management circuit, and / or the first control valve connects the electric drive cooling circuit and the radiator circuit.

5. The thermal management system of claim 1, wherein, When the thermal management system is in a medium-temperature environment The refrigerant circuit is in dehumidification mode; the first control valve connects the refrigerant circuit, the battery thermal management circuit, the electric drive cooling circuit, and the radiator circuit; the second control valve disconnects the heater circuit and the battery thermal management circuit. Alternatively, when the refrigerant circuit is in a non-operating mode, the first control valve connects the refrigerant circuit, the battery thermal management circuit, and the radiator circuit; and / or connects the electric drive cooling circuit to form an electric drive cooling self-loop.

6. The thermal management system of claim 1, wherein, When the thermal management system is in a low-temperature environment, The refrigerant circuit is in heat pump water circuit heat absorption mode. The first control valve connects the refrigerant circuit and the battery thermal management circuit, and / or connects the electric drive cooling circuit to form an electric drive cooling self-loop; the second control valve connects the heater circuit. Alternatively, the refrigerant circuit is in heat pump air heat absorption mode, and the first control valve is connected to the battery thermal management circuit and the electric drive cooling circuit; Alternatively, the refrigerant circuit is in a non-operating mode, the first control valve is connected to the battery thermal management circuit, and / or the first control valve is connected to the electric drive cooling circuit; the second control valve is connected to the heater circuit and the battery thermal management circuit; Alternatively, the refrigerant circuit is in heat pump air heat absorption mode, the first control valve is connected to the battery thermal management circuit, and / or the first control valve is connected to the electric drive cooling circuit and the radiator circuit; the second control valve is connected to the heater circuit and the battery thermal management circuit.

7. The thermal management system of claim 3, wherein, The battery thermal management circuit includes a battery inlet water temperature sensor, a battery circuit water pump, a power battery, and a battery outlet water temperature sensor. The battery circuit water pump and the power battery are connected in series between the battery inlet water temperature sensor and the battery outlet water temperature sensor; The battery inlet water temperature sensor is connected to the second end of the three-way valve and the second end of the ten-way valve, and the battery outlet water temperature sensor is connected to the third end of the three-way valve and the third end of the ten-way valve.

8. The thermal management system of claim 2, wherein, The electric drive cooling circuit includes an electric drive inlet water temperature sensor, an electric drive circuit water pump, an electric drive assembly, and an electric drive outlet water temperature sensor. The electric drive circuit water pump and the electric drive assembly are connected in series between the electric drive inlet water temperature sensor and the electric drive outlet water temperature sensor; The electric drive inlet water temperature sensor is connected to the fifth terminal of the ten-way valve, and the electric drive outlet water temperature sensor is connected to the eighth terminal of the ten-way valve.

9. The thermal management system of claim 3, wherein, The heating circuit includes a heating circuit water pump, a water heater, and a heating core; The warm air circuit water pump, the water heater, and the warm air core are connected in series between the first and third ends of the three-way valve.

10. The thermal management system of claim 1, wherein, The refrigerant circuit includes a gas-liquid separator, a compressor, an external electronic expansion valve, a condenser branch, an evaporator branch, and an external heat exchange branch; The first end of the gas-liquid separator is connected to the second end of the evaporator branch, the second end of the condenser branch, the second end of the external heat exchange branch, and the cooling water circuit. The second end of the gas-liquid separator is connected to the input end of the compressor. The output end of the compressor is connected to the first end of the condenser branch and the first end of the external heat exchange branch. The first end of the evaporator branch is connected to the first end of the condenser branch and the first end of the external heat exchange branch. The external electronic expansion valve is connected to the condenser branch and the external heat exchange branch.

11. The thermal management system of claim 10, wherein, The condenser branch includes an internal cooling solenoid valve, a condenser, a condenser outlet temperature sensor, an external bypass solenoid valve, and an external bypass circuit check valve; the internal cooling solenoid valve, the condenser, the condenser outlet temperature sensor, the external bypass solenoid valve, and the external bypass circuit check valve are connected in series between the first and second ends of the condenser branch. The external heat exchange branch includes an internal cooling bypass solenoid valve, an external heat exchanger, an external heat exchange outlet temperature sensor, and an external heat exchange loop check valve; the internal cooling bypass solenoid valve, the external heat exchanger, the external heat exchange outlet temperature sensor, and the external heat exchange loop check valve are connected in series between the first and second ends of the external heat exchange branch. The first end of the external heat exchanger electronic expansion valve is connected to the connection node between the internal cooling bypass solenoid valve and the external heat exchanger, and the second end of the external heat exchanger electronic expansion valve is connected to the connection node between the condensate outlet temperature sensor and the external heat exchanger bypass solenoid valve. The evaporator branch includes an evaporator electronic expansion valve, an evaporator, and an evaporator outlet temperature and pressure sensor; the evaporator electronic expansion valve, the evaporator, and the evaporator outlet temperature and pressure sensor are connected in series between the first and second ends of the evaporator branch.

12. A vehicle, wherein, Includes the thermal management system as described in any one of claims 1 to 11.

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