Thermal management system and vehicle

Abstract

The invention discloses a thermal management system and a vehicle. The thermal management system comprises a battery cooler, a refrigerant loop and a cooling water loop. The battery cooler is connected with the refrigerant loop and the cooling water loop and is used for carrying out heat transfer between the refrigerant loop and the cooling water loop; the cooling water loop comprises a warm air loop, a battery heat management loop, an electric drive cooling loop, a radiator loop, a first control valve and a second control valve; the first control valve is connected with the second control machine valve, the refrigerant loop, the warm air loop, the battery heat management loop, the electric drive cooling loop and the radiator loop; the first control valve and the second control valve are matched to be used for switching communication modes among the refrigerant loop, the warm air loop, the battery heat management loop, the electric drive cooling loop and the radiator loop, and heat transfer in different modes is carried out among the refrigerant loop, the warm air loop, the battery heat management loop, the electric drive cooling loop and the radiator loop in different temperature environments. The structure of the thermal management system is simplified, and cost is reduced.

Description

Technical Field

[0001] The present invention relates to the field of thermal management technology, and in particular to a thermal management system and a vehicle. Background Art

[0002] With the popularity of new energy vehicles, the market has put forward higher requirements on the energy consumption of new energy vehicles. The vehicle thermal management system has an important impact on the energy consumption of the vehicle. At present, the thermal management system of the vehicle mainly includes the heater thermal management system, the battery thermal management system and the electric drive thermal management system. The heater thermal management system, the battery thermal management system and the electric drive thermal management system can interact with each other to reduce the energy consumption of the vehicle. However, the overall structure of the existing thermal management system is complex and the cost is high. Summary of the invention

[0003] The embodiments of the present invention provide a thermal management system and a vehicle to solve the problems of complex structure and high cost of existing thermal management systems.

[0004] A thermal management system includes 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, and is used for heat transfer between the refrigerant circuit and the cooling water circuit; The cooling water circuit includes a warm air 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 warm air circuit, the battery thermal management circuit, the electric drive cooling circuit and the radiator circuit; The second control valve is connected to the warm air circuit and the battery thermal management circuit; The first control valve and the second control valve cooperate 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 realize different modes of heat transfer 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.

[0005] Further, the first control valve is a ten-way valve; The first end and the fourth end of the ten-way valve are connected to the refrigerant circuit and the second control valve; The second end and the third end of the ten-way valve are connected to the battery thermal management circuit; The fifth end and the eighth end of the ten-way valve are connected to the electric drive cooling circuit; The sixth end and the seventh end of the ten-way valve are connected via a pipeline; The ninth end and the tenth end of the ten-way valve are connected to the radiator circuit.

[0006] Further, 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 warm air 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 warm air circuit, the second end of the battery thermal management circuit and the fourth end of the ten-way valve.

[0007] Furthermore, the thermal management system also includes a battery cooler; the battery cooler is connected to the refrigerant circuit and the cooling water circuit.

[0008] Furthermore, when the thermal management system is in a high temperature environment, The refrigerant circuit is in cooling mode; The first control valve is connected to the refrigerant circuit and the battery thermal management circuit, and / or the first control valve is connected to the electric drive cooling circuit and the radiator circuit.

[0009] Furthermore, 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 warm air circuit and the battery thermal management circuit; Alternatively, the refrigerant circuit is in a non-operating mode, and 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-circuit.

[0010] Furthermore, when the thermal management system is in a low temperature environment, The refrigerant circuit is in the heat pump water circuit heat absorption mode, the first control valve is connected to the refrigerant circuit and the battery thermal management circuit, and / or is connected to the electric drive cooling circuit to form an electric drive cooling self-circuit; the second control valve is connected to the warm air circuit; Alternatively, the refrigerant circuit is in a heat pump air 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 warm air circuit and the battery thermal management circuit; Alternatively, the refrigerant circuit is in a heat pump air 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 warm air circuit and the battery thermal management circuit.

[0011] Further, 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 arranged 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.

[0012] Further, 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 end of the ten-way valve, and the electric drive outlet water temperature sensor is connected to the eighth end of the ten-way valve.

[0013] Further, the warm air circuit includes a warm air circuit water pump, a water heater and a warm air core; The warm air circuit water pump, the water heater and the warm air core are connected in series between the first end and the third end of the three-way valve.

[0014] Further, 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, and 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 heat exchange electronic expansion valve is connected to the condenser branch and the external heat exchange branch.

[0015] Further, the condenser branch includes an inner cooling solenoid valve, a condenser, a condensation outlet temperature sensor, an outer switching bypass solenoid valve and an outer switching bypass circuit check valve; the inner cooling solenoid valve, the condenser, the condensation outlet temperature sensor, the outer switching bypass solenoid valve and the outer switching bypass circuit check valve are sequentially connected in series between the first end and the second end 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 circuit check valve; the internal cooling bypass solenoid valve, the external heat exchanger, the external heat exchange outlet temperature sensor and the external heat exchange circuit check valve are sequentially connected in series between the first end and the second end of the external heat exchange branch; The first end of the external electronic expansion valve is connected to the connection node between the internal cooling bypass electromagnetic valve and the external heat exchanger, and the second end of the external electronic expansion valve is connected to the connection node between the condensing outlet temperature sensor and the external bypass electromagnetic 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 sequentially connected in series between the first end and the second end of the evaporator branch.

[0016] A vehicle comprises the above-mentioned thermal management system.

[0017] The above-mentioned thermal management system and vehicle, the thermal management system includes 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, and is used for heat transfer between the refrigerant circuit and the cooling water circuit. The cooling water circuit includes a warm air 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 warm air circuit, the battery thermal management circuit, the electric drive cooling circuit and the radiator circuit; the second control valve is connected to the warm air circuit and the battery thermal management circuit; the first control valve and the second control valve cooperate to switch the connection mode between the control refrigerant circuit, the warm air circuit, the battery thermal management circuit, the electric drive cooling circuit and the radiator circuit, so as to realize different modes of heat transfer between the refrigerant circuit, the warm air circuit, the battery thermal management circuit, the electric drive cooling circuit and the radiator circuit under different temperature environments, and switch the connection mode between the refrigerant circuit, the warm air circuit, the battery thermal management circuit, the electric drive cooling circuit and the radiator circuit by controlling the working state of the first control valve and the second control valve, so that the first control valve and the second control valve cooperate to control different modes of heat transfer between the refrigerant circuit, the warm air circuit, the battery thermal management circuit, the electric drive cooling circuit and the radiator circuit, thereby simplifying the structure of the thermal management system and reducing costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings required for use in the description of the embodiments of the present invention will be briefly introduced below. Obviously, the accompanying drawings in the following description are only some embodiments of the present invention. For ordinary technicians in this field, other accompanying drawings can be obtained based on these accompanying drawings without paying creative labor.

[0019] Figure 1 is a schematic diagram of a thermal management system in one embodiment of the present invention; Figure 2 is another schematic diagram of a thermal management system according to an embodiment of the present invention; Figure 3 is another schematic diagram of a thermal management system according to an embodiment of the present invention; Figure 4 is another schematic diagram of a thermal management system according to an embodiment of the present invention; Figure 5 is another schematic diagram of a thermal management system according to an embodiment of the present invention; Figure 6 is another schematic diagram of a thermal management system according to an embodiment of the present invention; Figure 7 is another schematic diagram of a thermal management system according to an embodiment of the present invention; Figure 8 is another schematic diagram of a thermal management system according to an embodiment of the present invention; Fig. 9 is another schematic diagram of a thermal management system in one embodiment of the present invention. DETAILED DESCRIPTION

[0020] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0021] It should be understood that the present invention can be implemented in different forms and should not be construed as being limited to the embodiments set forth herein. On the contrary, providing these embodiments will make the disclosure thorough and complete and fully convey the scope of the present invention to those skilled in the art. In the accompanying drawings, the sizes and relative sizes of layers and regions may be exaggerated for clarity. The same reference numerals throughout represent the same elements.

[0022] It should be understood that when an element or layer is referred to as being "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. In contrast, when an element is referred to as being "directly on, directly adjacent to, directly connected to or directly coupled to other elements or layers, there may be 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, regions, layers and / or parts, these elements, components, regions, layers and / or parts should not be limited by these terms. These terms are only used to distinguish one element, component, region, layer or part from another element, component, region, layer or part. Therefore, without departing from the teachings of the present invention, the first element, component, region, layer or part discussed below may be represented as a second element, component, region, layer or part.

[0023] Spatially relative terms such as "under," "beneath," "below," "under," "above," "above," and the like may be used herein for ease of description to describe the relationship of an element or feature shown in the figures to other elements or features. It should be understood that the spatially relative terms are intended to include different orientations of the device in use and operation in addition to the orientations shown in the figures. For example, if the device in the accompanying drawings is flipped, then the elements or features described as "under other elements" or "under" or "under" will be oriented as "above" the other elements or features. Thus, the exemplary terms "under" and "under" may include both upper and lower orientations. The device may be otherwise oriented (rotated 90 degrees or other orientations) and the spatial descriptors used herein are interpreted accordingly.

[0024] The purpose of the terms used herein is only to describe specific embodiments and is not intended to be limiting of the present invention. When used herein, the singular forms "one", "an" and "said / the" are also intended to include plural forms, unless the context clearly indicates otherwise. It should also be understood that the terms "consisting of" and / or "comprising", when used in this specification, determine the presence of the features, integers, steps, operations, elements and / or parts, but do not exclude the presence or addition of one or more other features, integers, steps, operations, elements, parts and / or groups. When used herein, the term "and / or" includes any and all combinations of the relevant listed items.

[0025] In order to fully understand the present invention, detailed structures and steps will be presented in the following description to illustrate the technical solutions proposed by the present invention. The preferred embodiments of the present invention are described in detail below, but in addition to these detailed descriptions, the present invention may also have other implementations.

[0026] The present embodiment provides a thermal management system, which is 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 converter. The thermal management system is applied to the vehicle to perform thermal management on the passenger compartment, the battery module and the electric drive module, so as to achieve heat transfer between the passenger compartment, the battery module and the electric drive module under different temperature environments, thereby reducing the power consumption of the whole vehicle. Exemplarily, the temperature environment includes a high temperature environment, a medium temperature environment and a low temperature environment. Exemplarily, the ambient temperature of the high temperature environment is above 40 degrees Celsius. The ambient temperature of the medium temperature environment is between 15 degrees Celsius and 40 degrees Celsius. The ambient temperature of the low temperature environment is below 15 degrees Celsius.

[0027] This embodiment provides a thermal management system, such as Figure 1 As shown, it includes 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 warm air 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 warm air 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 warm air circuit 11 and the battery thermal management circuit 12; the first control valve 15 and the second control valve 16 cooperate to switch the connection mode between the refrigerant circuit 1, the warm air circuit 11, the battery thermal management circuit 12, the electric drive cooling circuit 14 and the radiator circuit 14, so as to realize different modes of heat transfer between the refrigerant circuit 1, the warm air circuit 11, the battery thermal management circuit 12, the electric drive cooling circuit 14 and the radiator circuit 14 under different temperature environments.

[0028] In this embodiment, by connecting the first control valve 15 to the second control valve, the refrigerant circuit 1, the warm air circuit 11, the battery thermal management circuit 12, the electric drive cooling circuit 14 and the radiator circuit 14, and connecting the second control valve 16 to the warm air circuit 11 and the battery thermal management circuit 12, it is possible to switch the interconnection mode between the refrigerant circuit 1, the warm air circuit 11, the battery thermal management circuit 12, the electric drive cooling circuit 14 and the radiator circuit 14 by controlling the working states of the first control valve 15 and the second control valve 16, so that the first control valve 15 and the second control valve 16 cooperate to control different modes of heat transfer between the refrigerant circuit 1, the warm air circuit 11, the battery thermal management circuit 12, the electric drive cooling circuit 14 and the radiator circuit 14, thereby simplifying the structure of the thermal management system and reducing costs.

[0029] In one embodiment, if Figure 2 As shown, the first control valve 15 is a ten-way valve 101; the first end and the fourth end of the ten-way valve 101 are connected to the refrigerant circuit 1 and the second control valve 16; the second end and the third end of the ten-way valve 101 are connected to the battery thermal management circuit 12; the fifth end and the eighth end of the ten-way valve 101 are connected to the electric drive cooling circuit 14; the sixth end and the seventh end of the ten-way valve 101 are connected through a pipeline; the ninth end and the tenth end of the ten-way valve 101 are connected to the radiator circuit 14.

[0030] As an example, the first end and the fourth end of the ten-way valve 101 are connected to the refrigerant circuit 1 through the battery cooler 141. In this example, the first end and the fourth end of the ten-way valve 101 are connected to the refrigerant circuit 1 through 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, and the warm air circuit 11 connected to the second control valve 16 can exchange heat with the refrigerant circuit 1 through the battery cooler 141.

[0031] 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 battery module of the vehicle. For example, the battery module and the battery circuit water pump 111 are arranged 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 the 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 when working. Therefore, under different temperature environments, the power battery 112 needs to be cooled or heated to ensure the working efficiency of the power battery 112. For example, in a low temperature environment, the power battery 112 will generate heat when discharging to the outside, and the heat can also be used to heat the passenger compartment through the refrigerant circuit 1 or the cooling water circuit 2 to reduce 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 to perform control strategies such as water temperature control and thermal runaway protection.

[0032] As an example, Figure 2As shown, 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 arranged 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 end of the ten-way valve 101, and the electric drive outlet water temperature sensor 133 is connected to the eighth end of the ten-way valve 101. Exemplarily, the electric drive assembly 132 needs to be maintained below the maximum allowable operating temperature to ensure the safety of the vehicle, so when the temperature of the electric drive assembly 132 is too high, it needs to be cooled. At the same time, the lubricating oil of the differential reducer in the electric drive assembly 132 has a large viscosity at low temperatures, and the efficiency will be reduced, and it is necessary to avoid working at low temperatures for a long time. Therefore, it is also necessary to control the working state of the first control valve 15 and the second control valve 16 so that the thermal management system controls the electric drive assembly 132 to work within a suitable temperature range. The electric drive circuit water pump 131 is used to drive the coolant to 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, and are used for the thermal management system to implement control strategies such as water temperature control and thermal protection.

[0033] As an example, Figure 2 As shown, the radiator circuit 14 includes a radiator 150. Exemplarily, the radiator 150 is a liquid-gas heat exchanger for dissipating heat in the coolant to the ambient air, thereby reducing the temperature of the coolant.

[0034] In this embodiment, by switching the on or off state 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 performing heat exchange between different circuits, while having a simple structure and low cost.

[0035] In one embodiment, if Figure 2 As shown, 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 warm air 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 warm air circuit 11, the second end of the battery thermal management circuit 12 and the fourth end of the ten-way valve 101.

[0036] As an example, the warm air circuit 11 is arranged in the passenger compartment of the vehicle for heating the passenger compartment. Exemplarily, the warm air circuit 11 includes a warm air circuit water pump 120, a water heater 121 and a warm air core 122. The warm air circuit water pump 120, the water heater 121 and the warm air core 122 are connected in series between the first end and the third end of the three-way valve 123. Exemplarily, the water heater 121 can be a PCT resistor, for example. Exemplarily, the water heater 121 can heat the coolant flowing through the internal pipe of the warm air circuit 11 by consuming the electric energy of the power battery 112 in the vehicle, and heat other parts including the power battery 112 by the coolant. The warm air core 122 is an air-liquid heat exchanger, which can transfer the heat of the heated coolant in the flow channel of the warm air core 122 to the air on the surface of the warm air core 122 to heat the air, and the hot air is used to heat the passenger compartment, thereby realizing heating the passenger compartment. The warm air circuit water pump 120 is used to drive the coolant to flow in the pipe.

[0037] As an example, the battery inlet water temperature sensor 110 in the battery thermal management loop 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 loop 12 is connected to the third end of the three-way valve 123. The second end and the third end of the three-way valve 123 are also connected to the first end and the fourth end of the ten-way valve 101, respectively.

[0038] In this embodiment, by switching the on or off state between different ports of the three-way valve 123, the warm air circuit 11, the battery management circuit and the first control valve 15 can be interconnected, and 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.

[0039] In one embodiment, if Figure 2 As shown, 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 .

[0040] As an example, the first end of the battery cooler 141 is connected to the refrigerant circuit 1 through the cooler electronic expansion valve, and the second end of the battery cooler 141 is connected to the cooling water circuit 2 through the cooler inlet water temperature sensor. In this example, the battery cooler 141 is a liquid-liquid heat exchanger in structure, which can realize heat exchange between the refrigerant and the coolant, and is mainly used for cooling the power battery 112. Exemplarily, the battery cooler 141 can absorb the heat of the cooling water circuit 2 and exchange heat with the refrigerant circuit 1, thereby using 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 for control logic such as the battery circuit water pump 111 control and the heat pump waste heat recovery control in the battery thermal management circuit 12.

[0041] 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 .

[0042] In this embodiment, when the thermal management system is in a high temperature environment, for example, 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 can be exchanged between the refrigerant circuit 1 in the cooling mode and the battery thermal management circuit 12. Figure 3 As shown, the battery circuit water pump 111 in the battery thermal management circuit 12 drives the coolant to flow, flows through the power battery 112, takes away the heat of the power battery 112, and then 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, the coolant temperature is reduced, and then passes through the ten-way valve 101 and the battery inlet water temperature sensor 110 to return to the battery circuit water pump 111 for drive. Through this cycle, the battery cooler 141 is used to reduce the temperature of the power battery 112. At the same time, the electric drive circuit water pump 131 in the electric drive cooling circuit 14 drives the coolant to flow, flows through the electric drive assembly 132 of the vehicle, takes away the heat of the electric drive assembly 132, and passes 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, and then passes through the ten-way valve 101 and the electric drive inlet water temperature sensor 130 and returns to the electric drive circuit water pump 131. Through this cycle, the temperature of the electric drive assembly 132 is reduced by using the radiator 150.

[0043] 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 utilizing 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.

[0044] In one embodiment, when the thermal management system is in a medium temperature environment, the refrigerant circuit 1 is in a 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 warm air circuit 11 and the battery thermal management circuit 12; or, the refrigerant circuit 1 is in a non-working 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-circuit.

[0045] 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 the 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 warm air circuit 11 and the battery thermal management circuit 12. Figure 4 As shown, the electric drive circuit water pump 131 works to drive the coolant to flow, flows through the electric drive assembly 132, takes away the heat of the electric drive assembly 132, 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, and enters the battery thermal management circuit 12 where the power battery 112 is located. The battery circuit water pump 111 in the battery thermal management circuit 12 continues to work to drive the coolant to flow, flows through the power battery 112, takes away the heat of the power battery 112, then flows through the battery outlet water temperature sensor 113 and the ten-way valve 101, enters the radiator 150 to be cooled, and finally passes through the ten-way valve 101 and the electric drive inlet water temperature sensor, returns to the electric drive circuit water pump 131, and completes the cycle. Through this cycle, the heat of the power battery 112 and the electric drive assembly 132 is transferred to the environment through the radiator 150, and cooling is achieved. It is understandable that when the thermal management system is in a medium temperature environment, such as in spring and autumn, when the vehicle is running at a 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 entire vehicle.

[0046] As another example, when the thermal management system is in a medium temperature environment, the refrigerant circuit 1 is in a non-operating mode, and 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 circuit. Figure 5As shown, the battery circuit water pump 111 drives the coolant to flow, flows through the power battery 112, takes away the heat of the power battery 112, and then 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, and then is cooled in the radiator 150, the coolant temperature is reduced, and then passes through the ten-way valve 101 and the battery inlet water temperature sensor 110 to return to the battery circuit water pump 111. Through this cycle, the heat of the power battery 112 is discharged to the environment through the radiator 150. For the electric drive cooling circuit 14, the electric drive circuit water pump 131 works to drive the coolant to flow, flows through the electric drive assembly 132, and then flows through the electric drive circuit water pump 131 and the electric drive inlet water temperature sensor 130, and returns to the electric drive circuit water pump 131. Through this cycle, the heat of the electric drive assembly 132 is transferred to the coolant, and the coolant is slowly heated to achieve 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 is self-circulated to store heat. For example, when the vehicle is fast charging the power battery 112, the power battery 112 heats up sharply during fast charging. The radiator 150 is used to reduce the temperature of the power battery 112, which significantly reduces the energy consumption of the thermal management system compared to cooling the power battery 112 using the compressor 201 in the refrigerant circuit 1.

[0047] In one embodiment, when the thermal management system is in a low temperature environment, the refrigerant circuit 1 is in a heat pump water circuit 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-circuit; the second control valve 16 connects the warm air circuit 11; or, the refrigerant circuit 1 is in a heat pump air absorption mode, 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-working mode, the first control valve 15 connects the battery thermal management circuit 12, and / or, the first control valve 15 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 a heat pump air absorption mode, the first control valve 15 connects 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; the second control valve 16 connects the warm air circuit 11 and the battery thermal management circuit 12.

[0048] 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 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 circuit; the second control valve 16 connects the warm air circuit 11. Figure 6As shown, the battery circuit water pump 111 works to drive the coolant to flow, which flows through the power battery 112, taking away the heat of the power battery 112, and then 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. The coolant temperature is reduced, and then it passes through the ten-way valve 101 and the battery inlet water temperature sensor 110 and returns to the battery circuit water pump 111. Through this cycle, the battery cooler 141 absorbs the heat of the power battery 112, and the heat of the power battery 112 is cooled by the battery cooler 141 and transferred to the refrigerant in the battery cooler 141, and the heat is transferred to the passenger compartment through the refrigerant circuit 1. At the same time, the electric drive circuit water pump 131 works to drive the coolant to flow, flowing through the electric drive assembly 132, and then flowing through the electric drive outlet water temperature sensor 133 and the electric drive inlet water temperature sensor 130, and returns to the electric drive circuit water pump 131. Through this cycle, the heat of the electric drive assembly 132 is transferred to the coolant, and the coolant is slowly heated to achieve heat storage. At the same time, the second control valve 16 connects the warm air circuit 11 and the battery thermal management circuit 12, and the warm air circuit 11 is in a working state, that is, the passenger compartment air conditioning warm air is turned on. 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 of the power battery 112 to heat the passenger compartment, and the electric drive assembly 132 self-circulates to store heat. For example, when the vehicle is fast charging the power battery 112 while turning on the passenger compartment air conditioning warm air, the power battery 112 heats up violently during fast charging, and the heat pump air conditioner absorbs the heat for heating the passenger compartment, thereby saving energy for the entire vehicle.

[0049] As another example, when the thermal management system is in a low temperature environment, the refrigerant circuit 1 is in the 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. Figure 7As shown, the electric drive circuit water pump 131 works to drive the coolant to flow, flows through the electric drive assembly 132, takes away the heat therein, and 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, the battery circuit water pump 111, and then flows through the power battery 112. The coolant heats the power battery 112, then flows through the battery outlet water temperature sensor 113, the ten-way valve 101, the electric drive inlet water temperature sensor 130, and finally returns to the electric drive circuit water pump 131 to complete the cycle. Through this cycle, the power battery 112 absorbs the heat of the electric drive assembly 132. At the same time, the refrigerant circuit 1 is in the heat pump air absorption mode, which is used 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 the heat of the electric drive assembly 132, and the passenger compartment uses the heat pump air conditioner 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 when driving the vehicle. The power battery 112 absorbs the waste heat for heating, and the passenger compartment uses the heat pump air conditioning system to absorb heat from the air.

[0050] 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 warm air circuit 11 and the battery thermal management circuit 12. Figure 8As shown, the heater circuit water pump 120 drives the coolant to flow, and the coolant flows through the water heater 121 to be heated by the water heater 121, and the temperature rises. Then the coolant flows through the heater core 122, heating the air in the passenger compartment that flows through the fins of the heater core 122, and then flows through the three-way valve 123. The three-way valve 123 can guide this part of the high-temperature coolant to two outlets in proportion. The coolant at one outlet directly returns to the heater water pump inlet, and the other outlet flows into the battery thermal management circuit 12 to heat the power battery 112. At the same time, the battery circuit water pump 111 works to drive the coolant to flow, flow through the power battery 112, heat the power battery 112, and then flow through the battery outlet water temperature sensor 113. Then 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, and the other path enters the warm air circuit 11 to be heated, so that through the three-way valve 123, the water heater 121 can heat the power battery 112 and the passenger compartment at the same time. It can be understood that the opening of the three-way valve 123 can be adjusted to adjust the proportion of hot water allocated to the pool thermal management circuit to achieve the purpose of energy distribution. At the same time, the electric drive circuit water pump 131 works to drive the coolant to flow, flowing through the electric drive assembly 132, and then flowing 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 electric drive inlet water temperature sensor 130, and returns to the electric drive circuit water pump 131. Through this cycle, the heat of the electric drive assembly 132 is transferred to the coolant and slowly heats the coolant to achieve heat storage.

[0051] As another example, when the thermal management system is in a low temperature environment, the refrigerant circuit 1 is in the heat pump air 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. Fig. 9As shown, the heater water pump drives the coolant to flow, and the coolant flows through the water heater 121 to be heated, and the temperature rises, and then flows through the heater core 122 and the three-way valve 123. Then, the battery circuit water pump 111 drives the coolant to flow, and flows through the power battery 112 to heat the power battery 112. Then, the coolant flows through the battery outlet water temperature sensor 113 and is divided into two paths, one of which returns to the heater water pump inlet, and the other passes through the ten-way valve 101 and the battery inlet water temperature sensor 110 to return to the battery circuit water pump 111 inlet. The flow rate of the hot water pump and the battery circuit water pump 111 can be adjusted by adjusting the flow rate of the heater water pump and the battery circuit water pump 111. At the same time, the electric drive circuit water pump 131 drives the coolant to flow, flows through the vehicle's electric drive assembly 132, takes away the heat of the electric drive assembly 132, and returns 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 cockpit air temperature in the heat pump air absorption mode.

[0052] In one embodiment, if Figure 2 As shown, the refrigerant circuit 1 includes a gas-liquid separator 220, a compressor 201, an external electronic expansion valve 207, a condenser 205 branch, an evaporator 215 branch and an external heat exchange branch; 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, 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 205 branch and the first end of the external heat exchange branch, the first end of the evaporator 215 branch is connected to the condenser 205 branch The first end of the circuit 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.

[0053] 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 through the gas separation inlet temperature and pressure sensor 219. An evaporator 215 bypass solenoid valve 213 is also provided between the gas separation 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 through the compressor 201 outlet temperature and pressure sensor 202.

[0054] As an example, Figure 2 As shown, the condenser 205 branch includes an inner cooling solenoid valve 204, a condenser 205, a condensation outlet temperature sensor 206, an external exchange bypass solenoid valve 211 and an external exchange bypass circuit check valve 212. The inner cooling solenoid valve 204, the condenser 205, the condensation outlet temperature sensor 206, the external exchange bypass solenoid valve 211 and the external exchange bypass circuit check valve 212 are sequentially connected in series between the first end and the second end of the condenser 205 branch. The external heat exchange branch includes an inner cooling bypass solenoid valve 203, an external heat exchanger 208, an external exchange outlet temperature sensor 209 and an external exchange circuit check valve 210. The inner cooling bypass solenoid valve 203, the external heat exchanger 208, the external exchange outlet temperature sensor 209 and the external exchange circuit check valve 210 are sequentially connected in series between the first end and the second end of the external heat exchange branch. The first end of the external 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 electronic expansion valve 207 is connected to the connection node between the condensing outlet temperature sensor 206 and the external 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 sequentially connected in series between the first end and the second end of the evaporator 215 branch.

[0055] Furthermore, if Figure 3 As shown, when the internal cooling bypass solenoid valve 203, the external exchange circuit check valve 210 and the evaporator 215 electronic expansion valve 214 are turned on, and the internal cooling solenoid valve 204 and the external exchange bypass solenoid valve 211 are turned off, the refrigerant circuit 1 is in the cooling mode; like Figure 4 As shown, when the internal cooling bypass solenoid valve 203 and the external exchange circuit check valve 210 are turned off, and the evaporator 215 electronic expansion valve 214, the internal cooling solenoid valve 204 and the external exchange bypass solenoid valve 211 are turned on, the refrigerant circuit 1 is in the dehumidification mode; like Figure 5As shown, when the internal cooling bypass solenoid valve 203 and the external exchange circuit check valve 210 are turned off, the internal cooling solenoid valve 204 and the external exchange bypass solenoid valve 211 are turned on, the evaporator 215 electronic expansion valve 214 is turned off, and the external exchange electronic expansion valve 207 is turned off, the refrigerant circuit 1 is in the heat pump water circuit heat absorption mode; like Figure 7 As shown, when the internal cooling bypass solenoid valve 203, the external exchange bypass solenoid valve 211 and the evaporator 215 electronic expansion valve 214 are turned off, and the external exchange circuit check valve 210 and the internal cooling solenoid valve 204 are turned on, the refrigerant circuit 1 is in the heat pump air absorption mode.

[0056] This embodiment provides a vehicle, including the above-mentioned thermal management system.

[0057] The embodiments described above are only used to illustrate the technical solutions of the present invention, rather than to limit the same. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that the technical solutions described in the aforementioned embodiments may still be modified, or some of the technical features may be replaced by equivalents. Such modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the embodiments of the present invention, and should all be included in the protection scope of the present invention.

Claims

1. A thermal management system, characterized in that: Includes 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 for heat transfer between the refrigerant circuit and the cooling water circuit; The cooling water circuit includes a warm air 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 warm air circuit, the battery thermal management circuit, the electric drive cooling circuit and the radiator circuit; The second control valve is connected to the warm air circuit and the battery thermal management circuit; The first control valve and the second control valve cooperate 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 realize different modes of heat transfer 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 according to claim 1, characterized in that: The first control valve is a ten-way valve; The first end and the fourth end of the ten-way valve are connected to the refrigerant circuit and the second control valve; The second end and the third end of the ten-way valve are connected to the battery thermal management circuit; The fifth end and the eighth end of the ten-way valve are connected to the electric drive cooling circuit; The sixth end and the seventh end of the ten-way valve are connected via a pipeline; The ninth end and the tenth end of the ten-way valve are connected to the radiator circuit.

3. The thermal management system according to claim 2, characterized in that: 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 warm air 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 warm air circuit, the second end of the battery thermal management circuit and the fourth end of the ten-way valve.

4. The thermal management system according to claim 1, characterized in that: When the thermal management system is in a high temperature environment, The refrigerant circuit is in cooling mode; The first control valve is connected to the refrigerant circuit and the battery thermal management circuit, and / or the first control valve is connected to the electric drive cooling circuit and the radiator circuit.

5. The thermal management system according to claim 1, characterized in that: 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 warm air circuit and the battery thermal management circuit; Alternatively, the refrigerant circuit is in a non-operating mode, and 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-circuit.

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

7. The thermal management system according to claim 3, characterized in that: 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 arranged 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 according to claim 2, characterized in that: 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 end of the ten-way valve, and the electric drive outlet water temperature sensor is connected to the eighth end of the ten-way valve.

9. The thermal management system according to claim 3, characterized in that: The warm air circuit comprises a warm air circuit water pump, a water heater and a warm air core; The warm air circuit water pump, the water heater and the warm air core are connected in series between the first end and the third end of the three-way valve.

10. The thermal management system according to 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, and 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 heat exchange electronic expansion valve is connected to the condenser branch and the external heat exchange branch.

11. The thermal management system according to claim 10, characterized in that: The condenser branch includes an inner cooling solenoid valve, a condenser, a condensation outlet temperature sensor, an outer switching bypass solenoid valve and an outer switching bypass circuit check valve; the inner cooling solenoid valve, the condenser, the condensation outlet temperature sensor, the outer switching bypass solenoid valve and the outer switching bypass circuit check valve are sequentially connected in series between the first end and the second end 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 circuit check valve; the internal cooling bypass solenoid valve, the external heat exchanger, the external heat exchange outlet temperature sensor and the external heat exchange circuit check valve are sequentially connected in series between the first end and the second end of the external heat exchange branch; The first end of the external electronic expansion valve is connected to the connection node between the internal cooling bypass electromagnetic valve and the external heat exchanger, and the second end of the external electronic expansion valve is connected to the connection node between the condensing outlet temperature sensor and the external bypass electromagnetic 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 sequentially connected in series between the first end and the second end of the evaporator branch.

12. A vehicle, characterized in that: Comprising a thermal management system as claimed in any one of claims 1 to 11.

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