Heat management system and extended-range vehicle

Abstract

The application discloses a heat management system, a heat management method and a range extended vehicle. The heat management system comprises: a pipeline assembly, an engine, an air conditioner assembly, a battery assembly and an electric drive assembly are connected through the pipeline assembly, and the pipeline assembly is used for providing a flow path for a cooling medium; a plurality of valve groups, the plurality of valve groups are arranged on the pipeline assembly and are used for controlling switching of different circuits among the engine, the air conditioner assembly, the battery assembly and the electric drive assembly; a heat exchange assembly, the heat exchange assembly is arranged on the pipeline assembly and is used for converting heat of the cooling medium, so that the cooling medium exchanges heat with the engine, the air conditioner assembly, the battery assembly and the electric drive assembly; and a plurality of water pumps, the water pumps are arranged on the pipeline assembly and are used for driving the cooling medium to flow in the pipeline assembly. According to the embodiment of the application, waste heat can be recovered, the heating boundary is widened, the energy efficiency of the heat management is improved, and the cost of the heat management system is reduced.

Description

Technical Field

[0001] This application belongs to the technical field of automobiles, and particularly relates to a thermal management system and a range-extended vehicle. Background Technology

[0002] As automobiles become electrified, the importance of vehicle thermal management is becoming increasingly significant. Compared to pure electric vehicles, the thermal management system of range-extended vehicles is more complex. Under different ambient temperatures, the passenger compartment is relatively enclosed, and the thermal management system can provide a suitable temperature to ensure the comfort of the occupants. However, the performance of the entire vehicle, including the battery, engine, and generator, is closely related to temperature. Therefore, the thermal management system of range-extended vehicles is even more important.

[0003] Currently, in some extreme situations, such as low-temperature environments, the thermal management system in related technologies cannot generate heat, which reduces the heating limit of the thermal management system. In order to ensure the heating performance of the thermal management system in low-temperature environments, heating is carried out through direct heating components such as thermistors. This will undoubtedly increase the cost of the thermal management system and also increase energy consumption. Therefore, there is an urgent need for a range-extended thermal management system. Utility Model Content

[0004] This application provides a thermal management system and a range-extended vehicle that can recover waste heat, broaden the heating range, improve the energy efficiency of thermal management, and reduce the cost of the thermal management system.

[0005] On one hand, embodiments of this application provide a thermal management system applied to a range-extended electric vehicle, the range-extended electric vehicle including an engine, an air conditioning unit, a battery unit, and an electric drive unit, the thermal management system including:

[0006] A piping assembly is provided, through which the engine, air conditioning assembly, battery assembly and electric drive assembly are connected. The piping assembly provides a flow path for the cooling medium, which exchanges heat with the engine, air conditioning assembly, battery assembly and electric drive assembly.

[0007] Multiple valve groups are disposed on the piping assembly for controlling the switching of different circuits between the engine, air conditioning assembly, battery assembly and electric drive assembly on the piping assembly;

[0008] A heat exchange assembly is disposed on the piping assembly and is used to convert the heat of the cooling medium so that the cooling medium can exchange heat with the engine, air conditioning assembly, battery assembly and electric drive assembly;

[0009] Multiple water pumps are mounted on the piping assembly and are used to drive the cooling medium to flow within the piping assembly;

[0010] The thermal management system is configured to respond to a thermal management mode command of the range-extended vehicle, and control at least one valve group to open according to the thermal management mode command, so that the water pump drives the cooling medium to flow in the pipeline assembly, and the cooling medium recovers and exchanges heat between the engine, air conditioning assembly, battery assembly and electric drive assembly in the heat exchange assembly.

[0011] Optionally, the piping assembly includes:

[0012] The engine is mounted on the first pipeline;

[0013] The second pipeline, wherein the air conditioning component is disposed on the second pipeline;

[0014] The third pipeline, wherein the battery assembly, the electric drive assembly and the at least one valve group are disposed on the third pipeline;

[0015] The heat exchange assembly includes:

[0016] The second heat exchanger is used to exchange heat between the cooling medium in the second pipeline and the cooling medium in the third pipeline.

[0017] The thermal management system is specifically configured to respond to a thermal management mode command of a range-extended vehicle, control at least one of the valve groups to open according to the thermal management mode command, and drive the cooling medium to flow in the third pipeline so that the cooling medium can recover and exchange heat between the engine, air conditioning assembly, battery assembly and electric drive assembly in the second heat exchanger.

[0018] Optionally, the plurality of valve groups includes a first valve group, a second valve group, and a third valve group, which are sequentially connected on the second pipeline. The first valve group is connected to the second heat exchanger, the second valve group, and the third valve group, respectively. The second valve group is connected to the second heat exchanger, the electric drive assembly, the battery assembly, and the third valve group, respectively. The third valve group is connected to the second heat exchanger, the battery assembly, and the electric drive assembly, respectively.

[0019] The thermal management system is specifically used to control at least one of the first valve group, the second valve group, and the third valve group to open in response to the thermal management mode command of the range-extended vehicle. The water pump drives the cooling medium to flow in the third pipeline so that the cooling medium can recover and exchange heat between the engine, the air conditioning component, the battery component, and the electric drive component in the second heat exchanger.

[0020] Optionally, the second heat exchanger includes a condenser and / or a cooler, the condenser being used to exchange heat between the cooling medium in the air conditioning assembly on the second pipeline and the cooling medium in the third pipeline, and the cooler being used to exchange heat between the cooling medium flowing through the battery assembly and the cooling medium flowing through the air conditioning assembly on the second pipeline.

[0021] Optionally, the air conditioning component includes:

[0022] A compressor, the outlet of which is connected to one end of the heat exchange assembly;

[0023] A throttle valve assembly, one end of which is connected to the heat exchange assembly;

[0024] An evaporator assembly, wherein the liquid inlet end of the evaporator assembly is connected to the other end of the throttle valve assembly;

[0025] A gas-liquid separator, one end of which is connected to the inlet of the evaporator assembly and the heat exchange assembly, and the other end of which is connected to the liquid inlet of the compressor;

[0026] The thermal management system is specifically used to: in response to a thermal management mode command for a range-extended vehicle, when the air conditioning unit is in operation, the cooling medium recovers and exchanges heat between the engine, battery, and electric drive components via the heat exchange unit along the path of the compressor, heat exchange unit, throttle valve assembly, evaporator assembly, and gas-liquid separator.

[0027] Optionally, a first radiator is provided on the first pipeline, which is used to dissipate heat from the cooling medium flowing through the engine.

[0028] Optionally, a second radiator is provided on the third pipeline, the second radiator being used to dissipate heat from the cooling medium flowing through the battery assembly and the electric drive assembly.

[0029] In another aspect, embodiments of this application provide a range-extended vehicle, including: an engine, an air conditioning assembly, a battery assembly, an electric drive assembly, and a thermal management system as described in the first aspect.

[0030] The thermal management system and range-extended vehicle of this application embodiment, in this application embodiment, the thermal management system responds to the thermal management mode command of the range-extended vehicle, and controls at least one valve group to operate according to the thermal management mode command, so that the cooling medium circulates in the pipeline assembly, making full use of the waste heat of the engine, air conditioning assembly, battery assembly and electric drive assembly, further expanding the working boundary of the thermal management system, improving the working performance of the thermal management system. Compared with the use of thermistors for direct heating in related technologies, it can work in extreme environments without the need to add additional thermistors or other direct heating components, reducing the cost of the thermal management system. In addition, it can also realize the mode switching of different pipelines through the integration of different valve groups, thereby realizing heat recovery and exchange between the engine, air conditioning assembly, resistor assembly and electric drive assembly, which is conducive to the modular integration of the system and the recovery and utilization of heat, improving energy utilization efficiency. Attached Figure Description

[0031] To more clearly illustrate the technical solutions of the embodiments of this application, the accompanying drawings used in the embodiments of this application will be briefly introduced below. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0032] Figure 1 This is a schematic diagram of the structure of a thermal management system provided in another embodiment of this application;

[0033] Figure 2 This is a schematic diagram of the air conditioning cooling loop in the passenger compartment of a range-extended vehicle under idling conditions, provided in another embodiment of this application.

[0034] Figure 3 This is a schematic diagram of the circulation loop in the air conditioning heating mode when the range extender is not started, according to another embodiment of this application;

[0035] Figure 4 This is a schematic diagram of the air conditioning heating loop when the range extender is started, according to another embodiment of this application;

[0036] Figure 5 This is a schematic diagram of the electric drive cooling loop for heating, dehumidifying, and heat dissipation of the passenger compartment under idling conditions in spring and autumn, provided by another embodiment of this application.

[0037] Figure 6 This is a schematic diagram of a circulation loop for cooling the battery assembly and dissipating heat from the electric drive assembly, provided in another embodiment of this application.

[0038] Figure 7 This is a schematic diagram of a circulation loop provided by another embodiment of the present application, in which the battery module is heated and the air conditioning module absorbs heat from the electric drive module and the environment under low temperature charging conditions.

[0039] Figure 8 This is a schematic diagram of a heat dissipation circulation loop for the battery components to even out the temperature when there is a large temperature difference in the battery components during driving, provided by another embodiment of this application.

[0040] Figure 9 This is a schematic diagram of a heat dissipation loop of the battery pack through a second radiator during driving, provided by another embodiment of this application, when the battery pack temperature is high.

[0041] Figure 10 This is a schematic diagram of a circulation loop provided by another embodiment of this application for summer driving conditions, in which the passenger compartment is cooled by the air conditioning, the battery pack is cooled, and the electric drive component is cooled.

[0042] Figure 11 This is a schematic diagram of a loop for heating the battery pack when the passenger compartment is heated by the air conditioning in the low-temperature charging condition during winter, provided by another embodiment of this application.

[0043] Figure 12 This is a schematic diagram of a loop for heating the battery pack when the range extender starts, provided in another embodiment of this application, under the winter low-temperature charging condition.

[0044] Figure 13 This is a schematic diagram of a circulation loop provided by another embodiment of this application for summer driving conditions, in which the passenger compartment is cooled by air conditioning, the battery components are heated evenly, and the electric drive components are cooled.

[0045] Figure 14 This is a schematic diagram of a low-temperature charging condition provided in another embodiment of this application, in which the range extender is not activated, the passenger compartment is heated by the air conditioning, and the battery pack is cooled.

[0046] Figure 15 This is a schematic diagram of a loop for spring driving conditions provided in another embodiment of this application, in which the range extender is turned on, the passenger compartment is heated by the air conditioning, the battery pack is heated evenly, and the electric drive component is cooled.

[0047] Figure 16 This is a schematic diagram of a circulation loop provided by another embodiment of this application for spring and autumn driving conditions, in which the passenger compartment is heated and dehumidified by the air conditioning, the battery pack is cooled, and the electric drive component is cooled.

[0048] Figure 17 This is a schematic diagram of a loop for heating the battery pack during winter charging in an extremely low temperature environment, provided by another embodiment of this application.

[0049] Figure 18 This is a schematic diagram of a loop provided by another embodiment of this application for spring and autumn driving conditions, in which the passenger compartment is heated and dehumidified by the air conditioning, the battery components are heated evenly, and the electric drive components are cooled.

[0050] Explanation of reference numerals in the attached drawings: 1. Engine; 2. Air conditioning assembly; 21. Compressor; 22. Throttle valve assembly; 23. Evaporator assembly; 24. Gas-liquid separator; 3. Battery assembly; 4. Electric drive assembly; 5. Piping assembly; 51. First piping; 52. Second piping; 53. Third piping; 6. Valve assembly; 61. First valve assembly; 62. Second valve assembly; 63. Third valve assembly; 7. Water pump; 71. First water pump; 72. Second water pump; 73. Third water pump; 8. First radiator; 9. Second radiator; 10. Heat exchange assembly; 102. Second heat exchanger. Detailed Implementation

[0051] The features and exemplary embodiments of various aspects of this application will be described in detail below. To make the objectives, technical solutions, and advantages of this application clearer, the application will be further described in detail below with reference to the accompanying drawings and specific embodiments. It should be understood that the specific embodiments described herein are only intended to explain this application and not to limit it. For those skilled in the art, this application can be implemented without some of these specific details. The following description of the embodiments is merely to provide a better understanding of this application by illustrating examples.

[0052] It should be noted that, in this document, relational terms such as "first" and "second" are used merely to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising..." does not exclude the presence of additional identical elements in the process, method, article, or apparatus that includes the element.

[0053] To address the problems of existing technologies, this application provides a thermal management system and a range-extended vehicle. In this embodiment, the thermal management system responds to the thermal management mode command of the range-extended vehicle, controlling at least one valve group to circulate the cooling medium within the piping assembly. This fully utilizes the waste heat from the engine, air conditioning system, battery assembly, and electric drive assembly, further expanding the working boundary of the thermal management system and improving its performance. Compared to related technologies that use thermistors for direct heating, this system can operate in extreme environments without the need for additional thermistors or other direct heating components, reducing the cost of the thermal management system. Furthermore, by integrating different valve groups, different piping modes can be switched, thereby achieving heat recovery and exchange between the engine, air conditioning system, resistor assembly, and electric drive assembly. This facilitates modular integration of the system and heat recovery and utilization, improving energy efficiency.

[0054] The thermal management system provided in the embodiments of this application will be described below.

[0055] Figure 1 A schematic diagram of the structure of a thermal management system provided in one embodiment of this application is shown. Figure 1 As shown, a thermal management system is applied to a range-extended vehicle. The range-extended vehicle includes an engine 1, an air conditioning unit 2, a battery unit 3, and an electric drive unit 4. The electric drive unit 4 can be a generator, a component that converts kinetic energy into electrical energy. The battery unit 3 can include a battery pack. To improve the energy utilization rate of the engine 1, air conditioning unit 2, battery unit 3, and electric drive unit 4 in the range-extended vehicle, expand the thermal management boundary, and improve thermal energy utilization efficiency, the thermal management system may include:

[0056] Piping assembly 5 connects engine 1, air conditioning assembly 2, battery assembly 3 and electric drive assembly 4. Piping assembly 5 provides a flow path for the cooling medium, which exchanges heat with engine 1, air conditioning assembly 2, battery assembly 3 and electric drive assembly 4.

[0057] Multiple valve groups 6 are installed on the piping assembly 5 to control the switching of different circuits between the engine 1, air conditioning assembly 2, battery assembly 3 and electric drive assembly 4 on the piping assembly 5.

[0058] Heat exchange assembly 10 is installed on pipeline assembly 5 and is used to convert the heat of cooling medium so that the cooling medium can exchange heat with engine 1, air conditioning assembly 2, battery assembly 3 and electric drive assembly 4.

[0059] Multiple water pumps 7 are installed on the piping assembly 5 and are used to drive the cooling medium to flow within the piping assembly 5.

[0060] The thermal management system is used to respond to the thermal management mode command of the range-extended vehicle and control at least one valve group 6 to open according to the thermal management mode command, so that the water pump 7 drives the cooling medium to flow in the pipeline assembly 5, and the cooling medium in the heat exchange assembly 10 recovers and exchanges heat between the engine 1, the air conditioning assembly 2, the battery assembly 3 and the electric drive assembly 4.

[0061] In this embodiment, the thermal management system responds to the thermal management mode command of the range-extended vehicle and controls at least one valve group 6 to operate according to the thermal management mode command, so that the cooling medium circulates in the pipeline assembly 5, making full use of the waste heat of the engine 1, air conditioning assembly 2, battery assembly 3 and electric drive assembly 4, further expanding the working boundary of the thermal management system and improving its working performance. Compared with the use of thermistors for direct heating in related technologies, it can work in extreme environments without the need to add additional thermistors or other direct heating components, reducing the cost of the thermal management system. In addition, the integration of different valve groups 6 can realize the switching of different pipeline modes, thereby realizing heat recovery and exchange between the engine 1, air conditioning assembly 2, resistor assembly and electric drive assembly 4, which is conducive to the modular integration of the system and the recovery and utilization of heat, improving energy utilization efficiency.

[0062] See Figure 1 In some embodiments, in order to achieve heat recovery and utilization among the engine 1, air conditioning component 2, battery component 3, and electric drive component 4, and to improve heat utilization efficiency, the piping assembly 5 may include:

[0063] First pipe 51, engine 1 is installed on first pipe 51;

[0064] The second pipe 52, the air conditioning component 2 is installed on the second pipe 52;

[0065] The third pipeline 53, the battery assembly 3, the electric drive assembly 4 and at least one valve group 6 are disposed on the third pipeline 53;

[0066] Heat exchange assembly 10 may include:

[0067] The second heat exchanger 102 is used to exchange heat between the cooling medium in the second pipeline 52 and the cooling medium in the third pipeline 53.

[0068] The thermal management system, specifically used in response to the thermal management mode command of the range-extended vehicle, controls at least one valve group 6 to open according to the thermal management mode command, and the water pump 7 drives the cooling medium to flow in the third pipeline 53 so that the cooling medium recovers and exchanges heat between the engine 1, the air conditioning component 2, the battery component 3 and the electric drive component 4 in the second heat exchanger 102.

[0069] In this embodiment, in order to achieve heat exchange between the engine 1, air conditioning component 2, battery component 3, and electric drive component 4, the first pipe 51, the second pipe 52, and the third pipe 53 provide flow channels for the cooling medium. When the cooling medium passes through the engine 1, air conditioning component 2, battery component 3, and electric drive component 4, it absorbs or releases heat energy and then transfers the heat energy of the engine 1, air conditioning component 2, battery component 3, and electric drive component 4 to the cooling medium. Subsequently, in the second heat exchanger 102, the heat energy of the engine 1, air conditioning component 2, battery component 3, and electric drive component 4 is exchanged through the cooling medium, thereby realizing the energy recovery and utilization of the engine 1, air conditioning component 2, battery component 3, and electric drive component 4 and reducing the cost of the thermal management system.

[0070] For example, when the ambient temperature is low, i.e. below a preset temperature threshold, heat exchange can be performed using the energy generated during the operation of the engine 1, air conditioning component 2, battery component 3, or electric drive component 4 to exchange heat with the actuators that are below the preset temperature threshold.

[0071] In a specific example, when the ambient temperature is lower than the preset temperature threshold, in order to keep the battery assembly 3 working within the preset temperature range, the cooling medium in the first drive pipe 51 can absorb the heat of the engine 1. Then, the cooling medium that has absorbed the heat can heat the electric drive assembly 4 and the battery assembly 3, ensuring that the battery assembly 3 and the electric drive assembly 4 work within the preset temperature range.

[0072] In some embodiments, the cooling medium in the first pipe 51 may be a coolant, the cooling medium in the third pipe 53 may be a coolant, the cooling medium in the second pipe 52 may be a refrigerant, and the second heat exchanger 102 may include a water-cooled condenser and a battery cooler.

[0073] In other embodiments, the plurality of valve groups 6 may include a first valve group 61, a second valve group 62, and a third valve group 63, which are sequentially connected to the second pipeline 52. The first valve group 61 is connected to the second heat exchanger 102, the second valve group 62, and the third valve group 63, respectively. The second valve group 62 is connected to the second heat exchanger 102, the electric drive assembly 4, the battery assembly 3, and the third valve group 63, respectively. The third valve group 63 is connected to the second heat exchanger 102, the battery assembly 3, and the electric drive assembly 4, respectively.

[0074] Specifically, the thermal management system is used to control at least one of the valve groups 6 of the first valve group 61, the second valve group 62 and the third valve group 63 to open in response to the thermal management mode command of the range-extended vehicle, and the water pump 7 drives the cooling medium to flow in the third pipeline 53 so that the cooling medium can recover and exchange heat between the engine 1, the air conditioning component 2, the battery component 3 and the electric drive component 4 in the second heat exchanger 102.

[0075] In this embodiment of the application, when heat exchange is achieved between the engine 1, the air conditioning component 2, the electric drive component 4 and the battery component 3, heat exchange between at least any two actuators can be achieved by controlling the opening and closing of each valve group 6. The actuators may include the engine 1, the air conditioning component 2, the electric drive component 4 and the battery component 3.

[0076] For details, see Figure 1 Taking the first valve group 61, the second valve group 62, and the third valve group 63 as five-way valves, and multiple water pumps 7 respectively as the first water pump 71, the second water pump 72, and the third water pump 73, as an example, in this embodiment, the first and second ends of the first valve group 61 are connected to the first pipeline 51, the fifth end of the first valve group 61 is connected to the second end of the second valve group 62 through a one-way valve, the third end of the first valve group 61 is connected to the inlet end of the first water pump 71, the outlet of the first water pump 71 is connected to one end of the water-cooled condenser, and the other end of the water-cooled condenser is connected to the second end of the second valve group 62 through a warm air core, and the first end of the second valve group 62... Both the first and fifth ends are connected to one end of the electric drive assembly 4. The other end of the electric drive assembly 4 is connected to the inlet of the third water pump 73. The third end of the second valve group 62 is connected to the inlet of the second water pump 72. The fourth end of the second valve group 62 is connected to the fourth end of the third valve group 63 through the battery cooler. The outlet of the second water pump 72 is connected to one end of the battery assembly 3. The other end of the battery assembly 3 is connected to the fifth end of the third valve group 63. The first end of the third valve group 63 is connected to the second end of the second valve group 62. The third end of the third valve group 63 is connected to the outlet of the third water pump 73. The second end of the third water pump 73 is connected to the fourth end of the first valve group 61.

[0077] In this embodiment, by controlling the conduction of different ports of different valve groups 6, the different flow directions of the third cooling medium can be controlled to realize the heat recovery and utilization of different actuators.

[0078] In some embodiments, in order to achieve heat exchange between the cooling medium in the first pipe 51 and the cooling medium in the third pipe 53 and / or between the cooling medium in the second pipe 52 and the cooling medium in the third pipe 53, when the second heat exchanger 102 includes a condenser and a cooler, the condenser can be a water-cooled condenser and the cooler can be a battery cooler. The condenser can be used to exchange heat between the cooling medium in the air conditioning assembly 2 on the second pipe 52 and the cooling medium in the third pipe 53, and the cooler can be used to exchange heat between the cooling medium flowing through the ground pool assembly and the cooling medium flowing through the air conditioning assembly 2 on the second pipe 52.

[0079] In some other embodiments, the air conditioning component 2 may include:

[0080] Compressor 21, the outlet of compressor 21 is connected to one end of heat exchange assembly 10;

[0081] Throttling valve assembly 22, one end of which is connected to heat exchange assembly 10;

[0082] Evaporator assembly, the liquid inlet end of the evaporator assembly is connected to the other end of the throttle valve assembly 22;

[0083] The gas-liquid separator 24 has one end connected to the inlet of the evaporator assembly and the heat exchange assembly 10, and the other end connected to the liquid inlet of the compressor 21.

[0084] The thermal management system is specifically used to: respond to the thermal management mode command of the range-extended vehicle, and when the air conditioning component 2 is in operation, the cooling medium recovers and exchanges heat between the engine 1, battery component 3 and electric drive component 4 in the heat exchange component 10 along the path of compressor 21, heat exchange component 10, throttle valve component 22, evaporator component and gas-liquid separator 24.

[0085] In this embodiment, the air conditioning component 2 can serve as a management device for the range-extended vehicle, that is, the temperature control of the range-extended vehicle is achieved through the air conditioning component 2. Specifically, when performing thermal management on the range-extended vehicle, the compressor 21 can convert the refrigerant in a low-temperature, low-pressure state into a high-temperature, high-pressure refrigerant, which then passes through the water-cooled condenser and the expansion valve assembly 22 before entering the evaporator assembly. The evaporator assembly then converts the high-temperature, high-pressure refrigerant back into a low-temperature, low-pressure refrigerant, which then returns to the compressor 21 via the separator, thereby achieving temperature control.

[0086] In a specific example, the evaporator assembly may include at least one evaporator, and the throttle valve assembly 22 may include at least one throttle valve, wherein the number of evaporators and throttle valves corresponds one-to-one, that is, one evaporator assembly corresponds to one throttle valve.

[0087] In some other embodiments, in order to achieve rapid cooling of the cooling medium in the first pipe 51, a first radiator 8 is provided on the first pipe 51. The first radiator 8 is used to dissipate heat from the cooling medium flowing through the engine 1, so as to quickly cool the cooling medium.

[0088] In some other embodiments, in order to achieve rapid cooling of the cooling medium in the third pipe 53, a second radiator 9 is provided on the third pipe 53. The second radiator 9 is used to dissipate heat from the cooling medium flowing through the battery assembly 3 and the electric drive assembly 4, so as to quickly cool down the cooling medium in the third pipe 53.

[0089] In some embodiments, the connection method of the actuators on each pipeline will be described below. For ease of explanation, the cooling medium in the first pipeline 51 is defined as the first coolant, and the cooling medium in the third pipeline 53 is defined as the second coolant.

[0090] On the first pipeline 51, the engine 1 is installed. The outlet of the engine 1 is connected to one end of the second one-way valve. The other end of the second one-way valve is connected to the inlet of the engine 1 and one end of the first radiator 8 through a three-way valve. The other end of the first radiator 8 is connected to the inlet of the engine 1.

[0091] On the second pipeline 52, the outlet of the compressor 21 is connected to one end of the water-cooled condenser, the other end of the water-cooled condenser is connected to one end of the throttle valve assembly 6, the other end of the throttle valve assembly 6 is connected to one end of the evaporator assembly and one end of the battery cooler, the other end of the evaporator assembly and the other end of the battery cooler are both connected to the inlet of the gas-liquid separator 24, and the outlet of the gas-liquid separator 24 is connected to the inlet of the compressor 21.

[0092] In some examples, the inlet of the gas-liquid separator 24 is also directly connected to the water-cooled condenser via a throttling valve.

[0093] On the third pipeline 53, the first end of the first valve group 61 is connected to one end of the second check valve, the other end of the second check valve is connected to the second end of the first valve group 61, the third end of the first valve group 61 is connected to the inlet of the first water pump 71, the outlet of the first water pump 71 is connected to one end of the water-cooled condenser, the other end of the water-cooled condenser is connected to one end of the heater core, and the fifth end of the first valve group 61 and the other end of the heater core are both connected to the second end of the second valve group 62; the first end of the second valve group 62 is connected to one end of the second radiator 9, and the other end of the second radiator 9 and the fourth end of the second valve group 62 are both connected to the inlet of the electric drive assembly 4. The connection is as follows: the outlet of the electric drive assembly 4 is connected to the inlet of the third water pump 73; the outlet of the third water pump 73 is connected to the fifth end of the third valve group 63; the third end of the second valve group 62 is connected to the inlet of the second water pump 72; the outlet of the second water pump 72 is connected to one end of the battery assembly 3; the other end of the battery assembly 3 is connected to the fifth end of the third valve group 63; the fourth end of the second valve group 62 is connected to one end of the battery cooler; the other end of the battery cooler is connected to the fourth end of the third valve group 63; the first end of the third valve group 63 is connected to the second end of the second valve group 62; and the second end of the third valve group 63 is connected to the fourth end of the first valve group 61.

[0094] In some embodiments, the thermal management mode instruction may include at least one of the following: passenger compartment separate cooling mode, passenger compartment separate heating mode, passenger compartment dehumidification mode, passenger compartment heating and dehumidification mode, battery separate cooling mode, battery separate heating mode, battery equalization mode, battery natural heat dissipation mode, passenger compartment and battery simultaneous cooling mode, passenger compartment and battery simultaneous heating mode, passenger compartment cooling and battery heating mode, passenger compartment cooling and battery equalization mode, passenger compartment heating and battery cooling mode, passenger compartment heating and battery equalization mode, passenger compartment dehumidification and battery cooling mode, passenger compartment dehumidification and battery heating mode, passenger compartment dehumidification and battery equalization mode, passenger compartment heating and dehumidification and battery cooling mode, passenger compartment heating and dehumidification and battery heating mode, and passenger compartment heating and dehumidification and battery equalization mode.

[0095] Taking the above-mentioned thermal management system as an example, the circulation loops of each cooling medium under different thermal management mode commands will be described in detail below.

[0096] See Figure 2 , Figure 2 A schematic diagram of the air conditioning cooling loop in the passenger compartment of a range-extended vehicle under idling conditions is shown.

[0097] Specifically, in the second pipeline 52, the refrigerant loop circulation process is as follows: compressor 21 → water-cooled condenser → throttle valve group 6 → evaporator group → gas-liquid separator 24 → compressor 21;

[0098] Within the third pipe 53, the second coolant circulation process is as follows: first water pump 71 → water-cooled condenser → heater core → two ends of the second valve group 62 → first end of the second valve group 62 → second radiator 9 → electric drive assembly 4 → third water pump 73 → third end of the second valve group 62 → second end of the second valve group 62 → fourth end of the first valve group 61 → first water pump 71.

[0099] That is, while the air conditioning system is used for cooling, the low-temperature coolant is used to cool the second coolant, thereby cooling the crew cabin and the electric drive assembly 4.

[0100] See Figure 3 , Figure 3 The diagram shows the circulation loop in the air conditioning heating mode when the range extender is not activated.

[0101] Specifically, in the second pipeline 52, the refrigerant loop circulation process is as follows: compressor 21 → water-cooled condenser → first throttle valve → battery cooler → gas-liquid separator 24 → compressor 21;

[0102] In the third pipeline 53, the loop circulation process A of the first coolant is: first water pump 71 → water-cooled condenser → heater core → check valve → first valve group 61 → first water pump 71;

[0103] The first coolant loop circulation process B is as follows: third water pump 73 → third end of third valve group 63 → fourth end of third valve group 63 → battery cooler → fourth end of second valve group 62 → fifth end of second valve group 62 → electric drive assembly 4 → third water pump 73.

[0104] See Figure 4 , Figure 4 The diagram shows the circulation loop under air conditioning heating when the range extender is started.

[0105] Specifically, within the first pipeline 51, the first coolant circulation process A is: engine 1 → second check valve → three-way valve → first radiator 8 → engine 1;

[0106] Within the third pipeline 53, the second coolant loop circulation process B is as follows: first water pump 71 → water-cooled condenser → heater core → check valve → first valve group 61 → first water pump 71;

[0107] Within the third pipe 53, the second coolant loop circulation process C is as follows: third water pump 73 → third end of third valve group 63 → fourth end of third valve group 63 → battery cooler → second valve group 62 → electric drive assembly 4 → third water pump 73.

[0108] See Figure 5 , Figure 5The diagram shows a schematic of the electric drive cooling loop for heating, dehumidifying, and heat dissipation in the crew compartment under idling conditions in spring and autumn.

[0109] Specifically, the refrigerant loop cycle is as follows: compressor 21 → water-cooled condenser → throttle valve group 6 → evaporator group and battery cooler → gas-liquid separator 24 → compressor 21;

[0110] Within the first pipe 51, the engine 1 dissipates heat, and the coolant circuit circulation process a is engine 1 → second check valve → three-way valve → first radiator 8 → engine 1;

[0111] Within the third pipeline 53, the crew cabin is heated, and the second coolant circuit circulation process b is as follows: first water pump 71 → water-cooled condenser → heater core → check valve → first valve group 61 → first water pump 71.

[0112] Within the third pipe 53, the electric drive assembly 4 dissipates heat, and the second coolant circuit circulation process c is as follows: third water pump 73 → third end of the second valve group 62 → fourth end of the second valve group 62 → battery cooler → third end of the second valve group 62 → first end of the second valve group 62 and fifth end of the second valve group 62 → electric drive assembly 4 → third water pump 73.

[0113] See Figure 6 , Figure 6 A schematic diagram of the circulation loop for cooling of battery assembly 3 and heat dissipation of electric drive assembly 4 is shown.

[0114] Specifically, the refrigerant circuit cycle of compressor 21 is as follows: compressor 21 → water-cooled condenser → throttle valve group 6 → battery cooler → gas-liquid separator 24 → compressor 21;

[0115] Engine 1 cooling, coolant circuit circulation process a: Engine 1 → Second check valve → Three-way valve → First radiator 8 → Engine 1;

[0116] Battery assembly 3 cooling, second coolant loop circulation process b: second water pump 72 → battery assembly 3 → fifth end of second valve group 62 → fourth end of second valve group 62 → battery cooler → fourth end of second valve group 62 → third end of second valve group 62 → second water pump 72.

[0117] Electric drive assembly 4 and refrigerant high-pressure heat dissipation, second coolant circuit circulation process c: first water pump 71 → water-cooled condenser → heater core → second end of second valve group 62 → first end of second valve group 62 → second radiator 9 → electric drive assembly 4 → third water pump 73 → third end of third valve group 63 → second end of third valve group 63 → first water pump 71.

[0118] See Figure 7 , Figure 7The diagram shows a loop where the battery module 3 is heated and the air conditioning module 2 absorbs heat from the electric drive module 4 and the environment during low-temperature charging.

[0119] Air conditioning heating, refrigerant circuit circulation process: compressor 21 → water-cooled condenser → throttle valve → battery cooler → gas-liquid separator 24 → compressor 21;

[0120] Battery assembly 3 heating, second coolant circuit circulation process b: second water pump 72 - battery assembly 3 → fifth end of third valve group 63 → second end of third valve group 63 → fourth end of first valve group 61 → third end of first valve group 61 → first water pump 71 → water-cooled condenser → heater core → second end of second valve group 62 → third end of second valve group 62 → second water pump 72;

[0121] The electric drive assembly 4 or the environment absorbs heat, and the coolant circuit circulation process c is as follows: the third water pump 73 - the third section of the third valve group 63 → the fourth end of the third valve group 63 → the battery cooler → the fourth end of the second valve group 62 → the first and fifth ends of the second valve group 62 → the second radiator 9 → the electric drive assembly 4 → the third water pump 73.

[0122] See Figure 8 , Figure 8 This diagram shows the temperature uniformity of battery component 3 and the heat dissipation circulation loop of electric drive component 4 when there is a large temperature difference in battery component 3 during driving.

[0123] Specifically, the cooling process of engine 1 involves the following steps: Engine 1 → Second check valve → Three-way valve → First radiator 8 → Engine 1.

[0124] Battery module 3 is heated uniformly, and the second coolant loop circulation process b is as follows: second water pump 72 → battery module 3 → third valve group 63 → battery cooler → second valve group 62 → second water pump 72.

[0125] The electric drive assembly 4 dissipates heat, and the second coolant circuit circulation process c is as follows: third water pump 73 → third valve group 63 → first valve group 61 → second radiator 9 → electric drive assembly 4 → third water pump 73.

[0126] See Figure 9 , Figure 9 The diagram shows a loop diagram of the battery pack 3 cooling down through the second radiator 9 when the battery pack 3 is at a high temperature during driving.

[0127] Specifically, the cooling process of engine 1 involves the following steps: Engine 1 → Second check valve → Three-way valve → First radiator 8 → Engine 1.

[0128] Battery assembly 3 dissipates heat from the environment. The second coolant loop circulation process b is as follows: second water pump 72 → battery assembly 3 → third valve group 63 → battery cooler → second valve group 62 → second radiator 9 → electric drive assembly 4 → third water pump 73 → third valve group 63 → second valve group 62 → second water pump 72.

[0129] See Figure 10 , Figure 10 The diagram illustrates a circulation loop during summer driving conditions, where the passenger compartment is cooled by the air conditioning, the battery pack 3 is cooled, and the electric drive pack 4 is cooled.

[0130] Specifically, the refrigerant circuit cycle of compressor 21 is as follows: compressor 21 → water-cooled condenser → throttle valve group 6 → evaporator group and battery cooler → gas-liquid separator 24 → compressor 21.

[0131] Engine 1 cooling, first coolant circuit circulation process a: Engine 1 → second one-way valve → three-way valve → first radiator 8 → engine 1;

[0132] Battery assembly 3 cooling, second coolant loop circulation process b: second water pump 72 → battery assembly 3 → third valve group 63 → battery cooler → second valve group 62 → second water pump 72.

[0133] Electric drive assembly 4 and refrigerant high-pressure heat dissipation, second coolant circuit circulation process c: first water pump 71 → water-cooled condenser → heater core → second valve group 62 → second radiator 9 → electric drive assembly 4 → third water pump 73 → third valve group 63 → first valve group 61 → first water pump 71.

[0134] See Figure 11 , Figure 11 The diagram illustrates a circuit diagram of the battery pack 3 heating system during low-temperature charging in winter, when the range extender is not activated, the passenger compartment is heated by the air conditioning.

[0135] Specifically, the refrigerant circuit cycle is as follows: compressor 21 → water-cooled condenser → throttle valve assembly 6 → battery cooler → gas-liquid separator 24 → compressor 21.

[0136] Crew cabin heating, coolant circuit circulation process a: First water pump 71 → water-cooled condenser → heater core → one-way valve → first valve group 61 → first water pump 71.

[0137] Battery assembly 3 heating, coolant loop circulation process b: Second water pump 72 → Battery assembly 3 → Third valve group 63 → Second valve group 62 → Second water pump 72.

[0138] The electric drive assembly 4 or the environment absorbs heat, and the coolant circuit circulation process c is as follows: third water pump 73 → third valve group 63 → battery cooler → second valve group 62 → second radiator 9 → electric drive assembly 4 → third water pump 73; in addition, the coolant circuit circulation process a is connected to the coolant circuit circulation process b through the second valve group 62 and the third valve group 63, and the flow of circulation a can be introduced into circulation b to achieve heating of circulation b.

[0139] See Figure 12 , Figure 12 The diagram illustrates a circuit diagram of the heating loop for battery pack 3 during low-temperature charging in winter, when the range extender starts, the passenger compartment is heated by the air conditioning.

[0140] Engine 1 generates heat, and the coolant circulation process is as follows: Engine 1 → Second check valve → Three-way valve → First radiator 8 → Engine 1.

[0141] Crew cabin heating, coolant circuit circulation process b: First water pump 71 → water-cooled condenser - heater core → one-way valve → first valve group 61 → first water pump 71.

[0142] Battery assembly 3 heating, coolant circuit circulation process c: second water pump 72 → battery assembly 3 → third valve group 63 → second valve group 62 → water pump 72;

[0143] The cooling process of the electric drive assembly 4 is as follows: third water pump 73 → third valve group 63 → second valve group 62 → second radiator 9 → electric drive assembly 4 → third water pump 73.

[0144] See Figure 13 , Figure 13 The diagram shows a circulation loop for summer driving conditions, where the passenger compartment is cooled by air conditioning, the battery pack 3 is kept at a constant temperature, and the electric drive pack 4 is cooled.

[0145] The refrigerant circuit cycle of compressor 21 is as follows: compressor 21 → water-cooled condenser → expansion valve group 6 → evaporator group → gas-liquid separator 24 → compressor 21.

[0146] Engine 1 cooling, coolant circuit circulation process a: Engine 1 → Second check valve → Three-way valve → First radiator 8 → Engine 1.

[0147] Battery cooling, coolant loop circulation process b: Second water pump 72 → Battery assembly 3 → Third valve group 63 → Battery cooler second valve group 62 → Second water pump 72.

[0148] Electric drive assembly 4 and refrigerant high-pressure heat dissipation, coolant circuit circulation process c: first water pump 71 → water-cooled condenser - heater core → second valve group 62 → second radiator 9 → electric drive assembly 4 → third water pump 73 → third valve group 63 → first valve group 61 → first water pump 71.

[0149] See Figure 14 , Figure 14 The diagram shows a loop diagram of a low-temperature charging condition where the range extender is not activated, the passenger compartment is heated by the air conditioning, and the battery pack 3 is cooled.

[0150] Specifically, the refrigerant circuit cycle of the air conditioning component 2 for heating / cooling is as follows: compressor 21 → water-cooled condenser → throttle valve group 6 → battery cooler → gas-liquid separator 24 → compressor 21.

[0151] Crew cabin heating, coolant circuit circulation process a: First water pump 71 → water-cooled condenser → heater core → one-way valve → first valve group 61 → first water pump 71.

[0152] Battery module 3 cooling, coolant loop circulation process b: second water pump 72 → battery module 3 → third valve group 63 → battery cooler → second valve group 62 → second water pump 72.

[0153] The cooling process of the electric drive assembly 4 is as follows: Third water pump 73 → Third valve group 63 = Second valve group 62 → Second radiator 9 → Electric drive assembly 4 → Third water pump 73.

[0154] See Figure 15 , Figure 15 The diagram illustrates a loop for spring driving conditions, with the range extender activated, the passenger compartment heated by air conditioning, the battery pack 3 maintaining a constant temperature, and the electric drive pack 4 dissipating heat.

[0155] Specifically, the engine 1 generates heat, and the coolant circuit circulation process is as follows: Engine 1 → Second check valve → Three-way valve → First radiator 8 → Engine 1.

[0156] Crew cabin heating, coolant circuit circulation process b: First water pump 71 → water-cooled condenser → heater core → one-way valve → first valve group 61 → first water pump 71.

[0157] Battery module 3 temperature equalization, coolant loop circulation process c: second water pump 72 → battery module 3 → third valve group 63 → battery cooler → second valve group 62 → second water pump 72;

[0158] The cooling process of the electric drive assembly 4 is as follows: third water pump 73 → third valve group 63 → second valve group 62 → second radiator 9 → electric drive assembly 4 → third water pump 73.

[0159] See Figure 16 , Figure 16 The diagram shows a loop for vehicle operation in spring and autumn, where the passenger compartment is heated and dehumidified by the air conditioning, the battery pack 3 is cooled, and the electric drive pack 4 is cooled.

[0160] Specifically, for heating, the refrigerant circuit cycle of compressor 21 is as follows: compressor 21 → water-cooled condenser → throttle valve group 6 → evaporator group and battery cooler → gas-liquid separator 24 → compressor 21.

[0161] Engine 1 cooling, coolant circuit circulation process a: Engine 1 → Second check valve → Three-way valve → First radiator 8 → Engine 1.

[0162] Battery module 3 cooling, coolant loop circulation process b: second water pump 72 → battery module 3 → third valve group 63 → battery cooler → second valve group 62 → second water pump 72.

[0163] Electric drive assembly 4 and refrigerant high-pressure heat dissipation, coolant circuit circulation process c: first water pump 71 → water-cooled condenser → heater core → second valve group 62 → second radiator 9 → electric drive assembly 4 → third water pump 73 → third valve group 63 → first valve group 61 → first water pump 71.

[0164] See Figure 17 , Figure 17 The diagram shows a circuit diagram of the charging operation in winter under extremely low temperature conditions, with the crew cabin heated by air conditioning and the battery pack 3 being heated.

[0165] The hot gas bypass of compressor 21 and the refrigerant circuit circulation process a: compressor 21 → water-cooled condenser → throttle valve group 6 → battery cooler → gas-liquid separator 24 → compressor 21.

[0166] Refrigerant circuit cycle b: Compressor 21 → Throttling valve assembly 6 → Gas-liquid separator 24 → Compressor 21.

[0167] Crew cabin heating, coolant circuit circulation process a: First water pump 71 → water-cooled condenser → heater core → one-way valve → first valve group 61 → first water pump 71.

[0168] Battery assembly 3 heating, coolant loop circulation process b: Second water pump 72 → Battery assembly 3 → Third valve group 63 → Second valve group 62 → Second water pump 72.

[0169] Waste heat from electric drive assembly 4, coolant loop circulation process c: third water pump 73 → third valve group 63 → battery cooler → second valve group 62 → second radiator 9 → electric drive assembly 4 → third water pump 73.

[0170] In addition, the coolant circuit circulation process a is connected to the coolant circuit circulation process b through the first valve group 61 and the second valve group 62, so that the flow of circulation a can be introduced into circulation b, thereby realizing the heating of circulation b.

[0171] See Figure 18 , Figure 18The diagram shows a loop for the vehicle to operate in spring and autumn, with the passenger compartment heated and dehumidified by the air conditioning, the battery pack 3 to maintain a constant temperature, and the electric drive pack 4 to dissipate heat.

[0172] Specifically, the refrigerant circuit cycle of compressor 21 for heating is as follows: compressor 21 → water-cooled condenser → throttle valve group 6 → evaporator group → gas-liquid separator 24 → compressor 21.

[0173] Engine 1 cooling, coolant circuit circulation process a: Engine 1 → Second check valve → Three-way valve → First radiator 8 → Engine 1.

[0174] Battery module 3 is heated to a uniform temperature. Coolant circulation process b: Second water pump 72 → Battery module 3 → Third valve group 63 → Battery cooler → Second valve group 62 → Second water pump 72.

[0175] Electric drive assembly 4 and refrigerant high-pressure heat dissipation, coolant circuit circulation process c: first water pump 71 → water-cooled condenser → heater core → second valve group 62 → second radiator 9 → electric drive assembly 4 → third water pump 73 → third valve group 63 → second valve group 62 → first water pump 71.

[0176] In the embodiments of this application, the above-described thermal management system can realize multiple thermal management modes to expand the low-temperature heating boundary of the thermal management system, improve energy utilization efficiency, and reduce costs.

[0177] Based on the thermal management system provided in the above embodiments, this application also provides specific implementations of the thermal management method. Please refer to the following embodiments.

[0178] The thermal management method provided in this application embodiment may include:

[0179] In response to the thermal management mode command of the range-extended vehicle, at least one valve group is controlled to open according to the thermal management mode command, so that the water pump drives the cooling medium to flow in the piping assembly, and the cooling medium recovers and exchanges heat between the engine, air conditioning assembly, battery assembly and electric drive assembly in the heat exchange assembly.

[0180] In this embodiment, the thermal management system responds to the thermal management mode command of the range-extended vehicle and controls at least one valve group to operate, causing the cooling medium to circulate within the pipeline assembly. This fully utilizes the waste heat from the engine, air conditioning assembly, battery assembly, and electric drive assembly, further expanding the working boundary of the thermal management system and improving its performance. Compared to related technologies that use thermistors for direct heating, this system can operate in extreme environments without the need for additional thermistors or other direct heating components, reducing the cost of the thermal management system. Furthermore, by integrating different valve groups, different pipeline modes can be switched, thereby achieving heat recovery and exchange between the engine, air conditioning assembly, resistor assembly, and electric drive assembly. This facilitates modular integration of the system and heat recovery and utilization, improving energy efficiency.

[0181] In other embodiments, the thermal management mode command includes at least one of the following: heating mode, cooling mode, heating and dehumidification mode, and battery equalization mode.

[0182] When the first temperature of the electric drive assembly is greater than the first preset threshold and / or the second temperature of the battery assembly is greater than the second preset threshold, at least one valve group is controlled to open according to the thermal management mode command, so that the cooling medium in the third pipeline flows through the second heat exchanger, the battery assembly and the electric drive assembly, so that the cooling medium recovers and exchanges heat from the battery assembly and the electric drive assembly.

[0183] In this embodiment, different valve groups can be opened and closed by the user-issued thermal management mode command to achieve mode switching of different circuits, which is conducive to the modular integration of the thermal management system. At the same time, it can also recover and utilize waste heat, thereby improving energy utilization efficiency.

[0184] It is worth noting that the thermal management mode command can be set automatically, that is, by detecting the temperature value of each actuator, the corresponding mode can be automatically activated to achieve intelligent resource utilization and reduce the waste of thermal energy.

[0185] This application also provides a range-extended vehicle, including an engine, an air conditioning unit, a battery unit, an electric drive unit, and the aforementioned thermal management system.

[0186] The aspects of this disclosure have been described above with reference to flowchart illustrations and / or block diagrams of apparatus (systems) and computer program products according to embodiments of this disclosure. It should be understood that each block in the flowchart illustrations and / or block diagrams, and combinations of blocks in the flowchart illustrations and / or block diagrams, can be implemented by computer program instructions. These computer program instructions can be provided to a processor of a general-purpose computer, a special-purpose computer, or other programmable data processing apparatus to produce a machine such that these instructions, executable via the processor of the computer or other programmable data processing apparatus, enable the implementation of the functions / actions specified in one or more blocks of the flowchart illustrations and / or block diagrams. Such a processor can be, but is not limited to, a general-purpose processor, a special-purpose processor, a special application processor, or a field-programmable logic circuit. It is also understood that each block in the block diagrams and / or flowcharts, and combinations of blocks in the block diagrams and / or flowcharts, can also be implemented by special-purpose hardware performing the specified functions or actions, or can be implemented by a combination of special-purpose hardware and computer instructions.

[0187] The above are merely specific embodiments of this application. Those skilled in the art will clearly understand that, for the sake of convenience and brevity, the specific working processes of the systems, modules, and units described above can be referred to the corresponding processes in the foregoing embodiments, and will not be repeated here. It should be understood that the protection scope of this application is not limited thereto. Any person skilled in the art can easily conceive of various equivalent modifications or substitutions within the technical scope disclosed in this application, and these modifications or substitutions should all be covered within the protection scope of this application.

Claims

1. A thermal management system, characterized in that, Applied to range-extended vehicles, the range-extended vehicles include an engine (1), an air conditioning assembly (2), a battery assembly (3), and an electric drive assembly (4), the thermal management system includes: Piping assembly (5), the engine (1), air conditioning assembly (2), battery assembly (3) and electric drive assembly (4) are connected through the piping assembly (5), the piping assembly (5) is used to provide a flow path for the cooling medium, the cooling medium is used to exchange heat with the engine (1), air conditioning assembly (2), battery assembly (3) and electric drive assembly (4); Multiple valve groups (6) are provided on the pipeline assembly (5) for controlling the switching of different circuits between the engine (1), air conditioning assembly (2), battery assembly (3) and electric drive assembly (4) on the pipeline assembly (5); A heat exchange assembly (10) is disposed on the pipeline assembly (5) for converting heat in the cooling medium so that the cooling medium can exchange heat with the engine (1), the air conditioning assembly (2), the battery assembly (3) and the electric drive assembly (4); Multiple water pumps (7) are mounted on the piping assembly (5) and are used to drive the cooling medium to flow within the piping assembly (5); The thermal management system is configured to respond to a thermal management mode command of the range-extended vehicle and control at least one of the valve groups (6) to open according to the thermal management mode command, so that the water pump (7) drives the cooling medium to flow in the pipeline assembly (5), and the cooling medium recovers and exchanges heat between the engine (1), air conditioning assembly (2), battery assembly (3) and electric drive assembly (4) in the heat exchange assembly (10).

2. The thermal management system according to claim 1, characterized in that, The piping assembly (5) includes: The first pipeline (51) is provided on the engine (1); The second pipe (52) is provided on the air conditioning component (2); The third pipeline (53) is provided on the battery assembly (3), the electric drive assembly (4) and the at least one valve group (6); The heat exchange assembly (10) includes: The second heat exchanger (102) is used to exchange heat between the cooling medium in the second pipeline (52) and the cooling medium in the third pipeline (53); The thermal management system is specifically used to respond to the thermal management mode command of the range-extended vehicle, control at least one of the valve groups (6) to open according to the thermal management mode command, and drive the water pump (7) to flow the cooling medium in the third pipeline (53) so that the cooling medium recovers and exchanges heat between the engine (1), air conditioning assembly (2), battery assembly (3) and electric drive assembly (4) in the second heat exchanger (102).

3. The thermal management system according to claim 2, characterized in that, The plurality of valve groups (6) includes a first valve group (61), a second valve group (62) and a third valve group (63), which are connected in sequence on the second pipeline (52). The first valve group (61) is connected to the second heat exchanger (102), the second valve group (62) and the third valve group (63) respectively. The second valve group (62) is connected to the second heat exchanger (102), the electric drive assembly (4), the battery assembly (3) and the third valve group (63) respectively. The third valve group (63) is connected to the second heat exchanger (102), the battery assembly (3) and the electric drive assembly (4) respectively. The thermal management system is specifically used to control at least one valve group (6) of the first valve group (61), the second valve group (62) and the third valve group (63) to open in response to the thermal management mode command of the range-extended vehicle. The water pump (7) drives the cooling medium to flow in the third pipeline (53) so that the cooling medium can recover and exchange heat between the engine (1), the air conditioning component (2), the battery component (3) and the electric drive component (4) in the second heat exchanger (102).

4. The thermal management system according to claim 3, characterized in that, The second heat exchanger (102) includes a condenser and / or a cooler, the condenser being used to exchange heat between the cooling medium in the air conditioning assembly (2) on the second pipeline (52) and the cooling medium in the third pipeline (53), and the cooler being used to exchange heat between the cooling medium flowing through the battery assembly (3) and the cooling medium flowing through the air conditioning assembly (2) on the second pipeline (52).

5. The thermal management system according to any one of claims 1-4, characterized in that, The air conditioning component (2) includes: A compressor (21), the outlet of which is connected to one end of the heat exchange assembly (10); A throttle valve assembly (22), one end of which is connected to the heat exchange assembly (10); An evaporator assembly, wherein the liquid inlet end of the evaporator assembly is connected to the other end of the throttle valve assembly (22); A gas-liquid separator (24) is provided, one end of which is connected to the inlet of the evaporator assembly and the heat exchange assembly (10), and the other end of which is connected to the liquid inlet of the compressor (21). The thermal management system is specifically used to: in response to the thermal management mode command of the range-extended vehicle, when the air conditioning component (2) is in operation, the cooling medium along the path of the compressor (21), heat exchange component (10), throttle valve component (22), evaporator component and gas-liquid separator (24) recovers and exchanges heat between the engine (1), battery component (3) and electric drive component (4) in the heat exchange component (10).

6. The thermal management system according to any one of claims 2-4, characterized in that, A first radiator (8) is provided on the first pipeline (51), and the first radiator (8) is used to dissipate heat from the cooling medium flowing through the engine (1).

7. The thermal management system according to any one of claims 2-4, characterized in that, A second radiator (9) is provided on the third pipeline (53) for dissipating heat from the cooling medium flowing through the battery assembly (3) and the electric drive assembly (4).

8. A range-extended vehicle, characterized in that, The range-extended vehicle includes: an engine, an air conditioning unit, a battery unit, an electric drive unit, and a thermal management system as described in any one of claims 1-7.

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