Thermal management system and vehicle

Abstract

The utility model 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 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 utility model relates to the technical field of thermal management, in particular to a thermal management system and a vehicle. Background Art

[0002] With the increasing popularity of new energy vehicles, the market is placing higher demands on their energy consumption. The vehicle thermal management system (TMS) has a significant impact on overall vehicle energy consumption. Currently, a vehicle's TMS primarily consists of a heater TMS, a battery TMS, and an electric drive TMS. These systems interact with each other to reduce overall vehicle energy consumption. However, existing TMS systems are complex and expensive. 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;

[0005] 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;

[0006] 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;

[0007] 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;

[0008] The second control valve is connected to the warm air circuit and the battery thermal management circuit;

[0009] The first control valve and the second control valve cooperate 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 realize different modes of heat transfer 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.

[0010] Furthermore, the first control valve is a ten-way valve;

[0011] The first end and the fourth end of the ten-way valve are connected to the refrigerant circuit and the second control valve;

[0012] The second end and the third end of the ten-way valve are connected to the battery thermal management circuit;

[0013] The fifth end and the eighth end of the ten-way valve are connected to the electric drive cooling circuit;

[0014] The sixth end and the seventh end of the ten-way valve are connected via a pipeline;

[0015] The ninth end and the tenth end of the ten-way valve are connected to the radiator circuit.

[0016] Furthermore, the second control valve is a three-way valve;

[0017] 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.

[0018] Furthermore, the thermal management system further includes a battery cooler; the battery cooler is connected to the refrigerant circuit and the cooling water circuit.

[0019] Furthermore, when the thermal management system is in a high temperature environment,

[0020] The refrigerant circuit is in cooling mode;

[0021] 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.

[0022] Furthermore, when the thermal management system is in a medium temperature environment,

[0023] 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;

[0024] Alternatively, the refrigerant circuit is in a non-working mode, and the first control valve is connected to the refrigerant circuit, the battery thermal management circuit and the radiator circuit; and / or, is connected to the electric drive cooling circuit to form an electric drive cooling self-circuit.

[0025] Furthermore, when the thermal management system is in a low temperature environment,

[0026] The refrigerant circuit is in the 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 circuit; the second control valve connects the warm air circuit;

[0027] Alternatively, the refrigerant circuit is in the heat pump air absorption mode, and the first control valve is connected to the battery thermal management circuit and the electric drive cooling circuit;

[0028] 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;

[0029] Alternatively, the refrigerant circuit is in the 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.

[0030] 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;

[0031] 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;

[0032] 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.

[0033] 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;

[0034] 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;

[0035] 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.

[0036] Furthermore, the warm air circuit includes a warm air circuit water pump, a water heater and a warm air core;

[0037] 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.

[0038] 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;

[0039] 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;

[0040] The external heat exchange electronic expansion valve is connected to the condenser branch and the external heat exchange branch.

[0041] Furthermore, the condenser branch includes an internal cooling solenoid valve, a condenser, a condensing outlet temperature sensor, an external bypass solenoid valve, and an external bypass circuit check valve; the internal cooling solenoid valve, the condenser, the condensing outlet temperature sensor, the external bypass solenoid valve, and the external bypass circuit check valve are sequentially connected in series between the first end and the second end of the condenser branch;

[0042] 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;

[0043] The first end of the external 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 electronic expansion valve is connected to the connection node between the condensing outlet temperature sensor and the external bypass solenoid valve;

[0044] 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.

[0045] A vehicle comprises the above-mentioned thermal management system.

[0046] 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 to transfer heat 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 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. By controlling the working states of the first control valve and the second control valve, 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 is switched, 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

[0047] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following briefly introduces the drawings required for use in the description of the embodiments of the present invention. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative labor.

[0048] Figure 1 This is a schematic diagram of a thermal management system in one embodiment of the present invention;

[0049] Figure 2 is another schematic diagram of a thermal management system in one embodiment of the present invention;

[0050] Figure 3 is another schematic diagram of a thermal management system in one embodiment of the present invention;

[0051] Figure 4 is another schematic diagram of a thermal management system in one embodiment of the present invention;

[0052] Figure 5 is another schematic diagram of a thermal management system in one embodiment of the present invention;

[0053] Figure 6 is another schematic diagram of a thermal management system in one embodiment of the present invention;

[0054] Figure 7 is another schematic diagram of a thermal management system in one embodiment of the present invention;

[0055] Figure 8 is another schematic diagram of a thermal management system in one embodiment of the present invention;

[0056] Figure 9 This is another schematic diagram of a thermal management system in one embodiment of the present invention. DETAILED DESCRIPTION

[0057] 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 embodiments described are part of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0058] It should be understood that the present invention can be implemented in various forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided to make the disclosure thorough and complete and to fully convey the scope of the present invention to those skilled in the art. In the drawings, the dimensions and relative dimensions of layers and regions may be exaggerated for clarity. Like reference numerals denote like elements throughout.

[0059] It should be understood that when an element or layer is referred to as being "on," "adjacent to," "connected to," or "coupled to" another element or layer, it may be directly on, adjacent to, connected to, or coupled to the other element or layer, or there may be intervening elements or layers. Conversely, when an element is referred to as being "directly on," "directly adjacent to," "directly connected to," or "directly coupled to" another element or layer, 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, regions, layers, and / or parts, these elements, components, regions, layers, and / or parts should not be limited by these terms. These terms are merely 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.

[0060] Spatially relative terms such as "under," "beneath," "below," "under," "above," "above," etc., may be used herein for convenience of description to describe the relationship of one 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 drawings is flipped, then the elements or features described as "under" or "beneath" or "beneath" the other elements will be oriented as "over" the other elements or features. Thus, the exemplary terms "under" and "under" may include both the upper and lower orientations. The device may be oriented otherwise (rotated 90 degrees or in other orientations) and the spatial descriptors used herein are interpreted accordingly.

[0061] The purpose of the terms used herein is only to describe specific embodiments and is not intended to limit the present invention. 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, 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.

[0062] In order to fully understand the present invention, the following description will provide detailed structures and steps to illustrate the technical solutions proposed by the present invention. The preferred embodiments of the present invention are described in detail below. However, in addition to these detailed descriptions, the present invention may also have other implementation methods.

[0063] This embodiment provides a thermal management system for use 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 entire 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.

[0064] This embodiment provides a thermal management system, such as Figure 1As 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.

[0065] 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.

[0066] 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.

[0067] 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.

[0068] 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 connected to the vehicle's battery module. For example, 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 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 must be maintained within a specified temperature range during operation. Therefore, in different temperature environments, the power battery 112 needs to be cooled or heated to ensure its operating efficiency. For example, in low-temperature environments, the power battery 112 generates heat when discharging. 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 by the thermal management system to implement control strategies such as water temperature control and thermal runaway protection.

[0069] 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 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. For example, the electric drive assembly 132 needs to be maintained below the maximum allowable operating temperature to ensure vehicle safety. Therefore, when the temperature of the electric drive assembly 132 is too high, it needs to be cooled. Furthermore, the lubricating oil in the differential reducer of the electric drive assembly 132 has a higher viscosity at low temperatures, which reduces its efficiency. Therefore, it is necessary to avoid operating at low temperatures for a long time. Therefore, it is also necessary to control the operating 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 operate within an appropriate temperature range. The electric drive circuit water pump 131 drives the coolant flow through the thermal management system. The electric drive inlet water temperature sensor 130 and the electric drive outlet water temperature sensor 133 detect the water temperatures at the inlet and outlet of the electric drive assembly 132, which are used by the thermal management system to implement control strategies such as water temperature control and thermal protection.

[0070] As an example, Figure 2 As shown, the radiator circuit 14 includes a radiator 150. Illustratively, 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.

[0071] 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. At the same time, the structure is simple and the cost is low.

[0072] 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, and 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.

[0073] As an example, the heater circuit 11 is located within the passenger compartment of a vehicle and is used to provide heating to the passenger compartment. Exemplarily, the heater circuit 11 includes a heater circuit water pump 120, a water heater 121, and a heater core 122. The heater circuit water pump 120, water heater 121, and heater 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 a PCT resistor. Exemplarily, the water heater 121 utilizes electrical energy from the vehicle's power battery 112 to heat the coolant flowing through the internal pipes of the heater circuit 11, and uses the coolant to heat other components, including the power battery 112. The heater core 122 is an air-to-liquid heat exchanger that transfers heat from the heated coolant within the flow path of the heater core 122 to the air on its surface, heating the air. This heated air is then used to heat the passenger compartment, thereby providing heating to the passenger compartment. The heater circuit water pump 120 drives the coolant flow within the pipes.

[0074] 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 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.

[0075] 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.

[0076] 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 .

[0077] 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 structurally a liquid-liquid heat exchanger, which can realize heat exchange between the refrigerant and the coolant, and is mainly used to cool the power battery 112. For example, the battery cooler 141 can absorb heat from 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 in 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.

[0078] 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.

[0079] 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 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 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, flowing through the vehicle's electric drive assembly 132, taking away the heat of the electric drive assembly 132, and passing 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.

[0080] 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.

[0081] 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.

[0082] 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 warm air circuit 11 and the battery thermal management circuit 12. Figure 4 As shown, the electric drive circuit water pump 131 drives the coolant to flow, flowing through the electric drive assembly 132, removing heat from the electric drive assembly 132, 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, and entering 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 drive the coolant to flow, flowing through the power battery 112, removing heat from the power battery 112, then flowing through the battery outlet water temperature sensor 113 and the ten-way valve 101, entering the radiator 150 to be cooled, and finally passing 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. 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 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.

[0083] As another example, when the thermal management system is in a medium temperature environment and 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-circuit. Figure 5As shown, the battery circuit water pump 111 drives the coolant to flow 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, 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 and returns 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, flowing 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 operating at a medium temperature, the power battery 112 is cooled by the radiator 150, and the electric drive assembly 132 self-circulates to store heat. For example, when the vehicle is fast-charging the power battery 112, which generates intense heat, the radiator 150 cools the power battery 112, significantly reducing the energy consumption of the thermal management system compared to cooling the power battery 112 using the compressor 201 in the refrigerant circuit 1.

[0084] 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 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-circuit; the second control valve 16 connects the warm air circuit 11; or, the refrigerant circuit 1 is in a heat pump air heat 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 heat 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.

[0085] 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 self-circuit; the second control valve 16 connects the warm air circuit 11. Figure 6As 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, and the battery cooler 141, and is cooled by the low-temperature refrigerant in the battery cooler 141, and the coolant temperature is reduced. 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 and transferred to the refrigerant in the battery cooler 141 through 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 operates, driving the coolant 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, and back to the electric drive circuit water pump 131. Through this circulation, heat from the electric drive assembly 132 is transferred to the coolant, slowly heating the coolant and storing heat. Simultaneously, the second control valve 16 connects the heater circuit 11 and the battery thermal management circuit 12. The heater circuit 11 is in operation, i.e., the passenger compartment air conditioning is turned on. In this example, when the thermal management system is operating at a low temperature, the heat pump in the refrigerant circuit 1 absorbs heat from the power battery 112 to heat the passenger compartment, while the electric drive assembly 132 self-circulates and stores heat. For example, if the vehicle is fast charging the power battery 112 while the passenger compartment air conditioning is turned on, the power battery 112 will heat up significantly during fast charging. The heat pump absorbs this heat and uses it to heat the passenger compartment, thereby saving energy for the entire vehicle.

[0086] 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 operates to drive the coolant flow through the electric drive assembly 132, removing heat from it. 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, the ten-way valve 101, the battery inlet water temperature sensor 110, and the battery circuit water pump 111. The coolant then flows through the power battery 112, heating it. The coolant 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, completing the cycle. Through this cycle, the power battery 112 absorbs heat from the electric drive assembly 132. Simultaneously, the refrigerant circuit 1 is in heat pump air absorption mode, heating the passenger compartment air. 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 is heated by the heat pump air conditioning system absorbing heat from the air. 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.

[0087] As another example, when the thermal management system is in a low temperature environment and 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, which flows through the water heater 121 and is heated by it, increasing its temperature. The coolant then 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. Therefore, 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.

[0088] 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. Figure 9As shown, the heater water pump drives the coolant to flow, which flows through the water heater 121 and is heated by it, 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, flows through the power battery 112, heats the power battery 112, and then 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 and returns to the battery circuit water pump 111 inlet. By adjusting the flow of the heater water pump and the battery circuit water pump 111, the flow of hot water flowing through the power battery 112 can be adjusted. At the same time, the electric drive circuit water pump 131 drives the coolant to flow, flowing through the vehicle's electric drive assembly 132, taking away the heat of the electric drive assembly 132, and passing 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, and returning to the electric drive circuit water pump 131. 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.

[0089] 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.

[0090] As an example, the first end of 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 cooling water circuit 2 via a gas separator inlet temperature and pressure sensor 219. An evaporator 215 bypass solenoid valve 213 is also provided between the gas separator 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 compressor 201 is connected to the first end of the condenser 205 branch and the first end of the external heat exchange branch via a compressor 201 outlet temperature and pressure sensor 202.

[0091] As an example, Figure 2 As shown, the condenser 205 branch includes an internal cooling solenoid valve 204, condenser 205, condensing outlet temperature sensor 206, external bypass solenoid valve 211, and external bypass circuit check valve 212. The internal cooling solenoid valve 204, condenser 205, condensing outlet temperature sensor 206, external bypass solenoid valve 211, and external bypass circuit check valve 212 are sequentially 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 exchange outlet temperature sensor 209, and an external exchange circuit check valve 210. The internal cooling bypass solenoid valve 203, external heat exchanger 208, external exchange outlet temperature sensor 209, and external exchange circuit check valve 210 are sequentially connected in series between the first and second ends 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. 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 and second ends of the evaporator 215 branch.

[0092] 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 cooling mode;

[0093] like Figure 4 As shown, when the internal cooling bypass solenoid valve 203 and the external exchange circuit one-way 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 turned on, the refrigerant circuit 1 is in the dehumidification mode;

[0094] like Figure 5As shown, when the internal cooling bypass solenoid valve 203 and the external exchange circuit one-way valve 210 are closed, the internal cooling solenoid valve 204 and the external exchange bypass solenoid valve 211 are connected, the evaporator 215 electronic expansion valve 214 is closed, and the external exchange electronic expansion valve 207 is closed, the refrigerant circuit 1 is in the heat pump water circuit heat absorption mode;

[0095] 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 closed, and the external exchange circuit one-way valve 210 and the internal cooling solenoid valve 204 are turned on, the refrigerant circuit 1 is in the heat pump air absorption mode.

[0096] This embodiment provides a vehicle including the above-mentioned thermal management system.

[0097] 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 they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. These modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the various embodiments of the present invention, and should all be included in the scope of protection of the present invention.

Claims

1. A thermal management system, characterized in that: Including 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 heater 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 heater 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, wherein: 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, 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 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, wherein: 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, 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, the refrigerant circuit is in a non-working mode, and the first control valve is connected to the refrigerant circuit, the battery thermal management circuit and the radiator circuit; and / or, is connected to 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 connects the refrigerant circuit and the battery thermal management circuit, and / or connects the electric drive cooling circuit to form an electric drive cooling circuit; the second control valve connects the warm air circuit; Alternatively, the refrigerant circuit is in the 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 the 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, 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 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, 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 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, wherein: 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.

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; 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, wherein: The condenser branch includes an internal cooling solenoid valve, a condenser, a condensing outlet temperature sensor, an external bypass solenoid valve, and an external bypass circuit check valve; the internal cooling solenoid valve, the condenser, the condensing outlet temperature sensor, the external bypass solenoid valve, and the external 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 solenoid 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 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 sequentially connected in series between the first end and the second end of the evaporator branch.

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

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