Whole vehicle thermal management system and vehicle

Abstract

The invention provides a vehicle thermal management system and a vehicle, and relates to the technical field of vehicle thermal management. The system comprises a cabin pipeline, a battery pipeline, a motor pipeline and a first control assembly, the first control assembly comprises a first heat exchanger, a first control valve set and a first communicating pipeline, the first heat exchanger comprises a first refrigerant branch and a first heating medium branch which are used for heat exchange, and the first refrigerant branch is arranged in the cabin pipeline; the first heating medium branch and the first control valve set are arranged in the first communicating pipeline, and the first communicating pipeline communicates with the battery pipeline and the motor pipeline. The first control valve set is used for connecting the battery pipeline and / or the motor pipeline and the first heating medium branch into a loop so that heat generated in the working process of the battery and / or the motor can be used for heating the cabin. The whole vehicle heat management system can adapt to heat exchange in multiple working modes, and therefore energy in the vehicle working process can be fully utilized.

Description

Technical Field

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

[0002] With the promotion of environmental protection concepts, new energy vehicles have been widely developed. New energy vehicles use batteries, motors, etc. as power systems, which are significantly different from traditional vehicles and put forward new requirements for vehicle thermal management.

[0003] At present, the thermal management system of new energy vehicles heats the heat transfer medium through high-pressure water heating (WPTC) to achieve vehicle heating, and cools the vehicle through the heat released by the air compressor during the air compression process. Since the WPTC heating and air compressor cooling parts are relatively independent, there is heat isolation between the two parts, resulting in insufficient energy utilization. Summary of the invention

[0004] The present application provides a whole vehicle thermal management system and a vehicle. By designing motor pipelines, battery pipelines and cabin pipelines, heat can be transmitted through a medium. At the same time, through the control action of a first control component, the whole vehicle thermal management system can adapt to heat exchange in various working modes, thereby making full use of energy during the operation of the vehicle.

[0005] In a first aspect, the present application provides a monitoring system for a solar cell, the system comprising a cabin pipeline, a battery pipeline, a motor pipeline and a first control assembly, the first control assembly comprising a first heat exchanger, a first control valve group and a first connecting pipeline, the first heat exchanger comprising a first refrigerant branch and a first heat medium branch for heat exchange, the first refrigerant branch being arranged in the cabin pipeline, the first heat medium branch and the first control valve group being arranged in the first connecting pipeline respectively, and the first connecting pipeline being connected to the battery pipeline and the motor pipeline respectively; The first control valve group is used to connect the battery pipeline and / or the motor pipeline with the first heat medium branch to form a loop, so as to heat the cabin by utilizing the heat generated during the operation of the battery and / or the motor.

[0006] In some embodiments, the first control valve group includes a four-way valve and a first three-way valve, the first connecting pipeline includes a first branch and a second branch, the first heat medium branch is arranged in the first branch, the first end of the first branch, the first end of the second branch, and the first end of the battery pipeline are connected, the second end of the first branch is connected to the first connecting port of the four-way valve, the second end of the second branch is connected to the first outlet of the first three-way valve, the second end of the battery pipeline is connected to the second outlet of the first three-way valve, the second connecting port of the four-way valve is connected to the inlet of the first three-way valve, and the third connecting port and the fourth connecting port of the four-way valve are connected to the two ends of the motor pipeline respectively; When the cabin is heated only by the heat generated during the operation of the motor, the first communication port of the four-way valve is communicated with the fourth communication port of the four-way valve, the second communication port of the four-way valve is communicated with the third communication port of the four-way valve, and the inlet of the first three-way valve is communicated with the first outlet of the first three-way valve; When the cabin is heated by utilizing the heat generated during operation of the motor and the battery, the first connecting port of the four-way valve is connected to the fourth connecting port of the four-way valve, the second connecting port of the four-way valve is connected to the third connecting port of the four-way valve, and the inlet of the first three-way valve is connected to the second outlet of the first three-way valve.

[0007] In some embodiments, when the battery is heated by utilizing the heat generated during operation of the motor, the first connecting port of the four-way valve is connected to the fourth connecting port of the four-way valve, the second connecting port of the four-way valve is connected to the third connecting port of the four-way valve, and the inlet of the first three-way valve is connected to the second outlet of the first three-way valve.

[0008] In some embodiments, the first control assembly further comprises a heater, and the heater is disposed in the first branch; When the heat generated by the motor during operation cannot meet the heating demand of the cabin, the inlet of the first three-way valve is connected to the first outlet of the first three-way valve, and the heater is started; When the heat generated by the motor during operation cannot meet the heating demand of the battery, the inlet of the first three-way valve is connected to the second outlet of the first three-way valve, and the heater is started; When the heat generated during the operation of the motor cannot meet the heating requirements of the cabin and the battery, the inlet of the first three-way valve is connected to the second outlet of the first three-way valve, and the heater is started.

[0009] In some embodiments, the cabin pipeline includes a refrigerant circuit and a heating circuit, the refrigerant circuit includes a main circuit, a third branch circuit and a fourth branch circuit, the third branch circuit and the fourth branch circuit are respectively connected to the main circuit to form a circuit; The system further includes a compressor, an evaporator and a second control valve group, wherein the compressor is respectively arranged in the main circuit, the evaporator is arranged in the third branch circuit, the first refrigerant branch circuit is arranged in the fourth branch circuit, and the second control valve group is arranged in both the third branch circuit and the fourth branch circuit; The system further includes a heater core and a third control assembly, the third control assembly includes a second heat exchanger, a third control valve group and a second connecting pipeline, the second heat exchanger includes a second refrigerant branch and a second heat medium branch for heat exchange, the second heat medium branch is arranged in the main circuit, the second refrigerant branch and the third control valve group are respectively arranged in the second connecting pipeline, the second connecting pipeline is connected to the heating pipeline, and the heater core is arranged in the heating pipeline; When heating the cabin, the second control valve group connects the fourth branch with the main line to form a loop, the compressor is started, and the third control valve group connects the heating pipeline with the second refrigerant branch to form a loop; When the cabin is cooled, the second control valve group connects the third branch and the main line to form a loop, and the compressor is started.

[0010] In some embodiments, the second control valve group includes a first switch valve and a second switch valve, the first switch valve is arranged in the third branch, and the second switch valve is arranged in the fourth branch; When the cabin is cooled and / or dehumidified, the first switch valve is opened to connect the third branch with the main path to form a loop; When the cabin is heated and / or the battery is cooled, the second switch valve is opened to connect the fourth branch with the main road to form a loop.

[0011] In some embodiments, the cockpit pipeline further includes a heat dissipation pipeline, the system further includes a radiator, the second connecting pipeline is further connected to the heat dissipation pipeline, and the radiator is disposed in the heat dissipation pipeline; When the cabin is cooled, the third control valve group connects the heat dissipation pipeline and the second refrigerant branch to form a loop.

[0012] In some embodiments, the third control valve group includes a second three-way valve, the second connecting pipeline includes a fifth branch, the first end of the heat dissipation pipeline, the first end of the fifth branch, and the first end of the heating pipeline are connected, the second refrigerant branch is arranged in the fifth branch, the second end of the fifth branch is connected to the inlet of the second three-way valve, the first outlet of the second three-way valve is connected to the second end of the heating pipeline, and the second outlet of the second three-way valve is connected to the second end of the heat dissipation pipeline; When the cabin is cooled and / or the battery is cooled, the inlet of the second three-way valve is connected to the second outlet of the second three-way valve; When the cabin is heated, the inlet of the second three-way valve is communicated with the first outlet of the second three-way valve.

[0013] In some embodiments, the third control valve group further includes a third three-way valve and a fourth three-way valve, and the second connecting pipeline further includes a sixth branch; The third three-way valve is arranged between the second outlet of the second three-way valve and the second end of the heat dissipation pipeline, the inlet of the third three-way valve is communicated with the second outlet of the second three-way valve, the first outlet of the third three-way valve is communicated with the first end of the motor pipeline, and the second outlet of the third three-way valve is communicated with the second end of the heat dissipation pipeline; The first end of the sixth branch is communicated with the second outlet of the third three-way valve and the second end of the heat dissipation pipeline, the second end of the sixth branch is communicated with the first outlet of the fourth three-way valve, the second outlet of the fourth three-way valve is communicated with the first end of the heat dissipation pipeline, the first end of the fifth branch, and the first end of the heating pipeline, and the inlet of the fourth three-way valve is communicated with the second end of the motor pipeline; When cooling the cabin and / or the battery, the inlet of the third three-way valve is connected to the second outlet of the second three-way valve; When only the heat is dissipated for the motor and / or the battery, the inlet of the third three-way valve is communicated with the second outlet of the second three-way valve, and the inlet of the fourth three-way valve is communicated with the second outlet of the fourth three-way valve; When the cabin and / or the battery are heated by utilizing the heat generated during operation of the motor, the first outlet of the third three-way valve is connected to the second outlet of the second three-way valve, and the inlet of the fourth three-way valve is connected to the first outlet of the fourth three-way valve.

[0014] In a second aspect, the present application provides a vehicle, comprising a vehicle thermal management system as described in any one of the above.

[0015] In summary, the beneficial effects brought about by the technical solution of this application include: The motor pipelines, battery pipelines and cabin pipelines are designed so that heat can be transmitted through the medium. At the same time, through the control action of the first control component, the thermal management system of the whole vehicle can adapt to heat exchange in various working modes, so as to make full use of the energy in the vehicle's working process. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a structural schematic diagram of a vehicle thermal management system provided in an embodiment of the present application; Figure 2It is a structural schematic diagram of a cabin cooling-only working mode provided in an embodiment of the present application; Figure 3 It is a structural schematic diagram of a battery cooling-only working mode provided in an embodiment of the present application; Figure 4 This is a structural schematic diagram of a cabin and battery simultaneous cooling working mode provided by an embodiment of the present application; Figure 5 It is a structural schematic diagram of a battery heating-only working mode provided in an embodiment of the present application; Figure 6 It is a structural schematic diagram of a cabin heating-only working mode provided in an embodiment of the present application; Figure 7 This is a structural schematic diagram of a cabin and battery simultaneous heating working mode provided by an embodiment of the present application; Figure 8 is a structural schematic diagram of another cabin and battery simultaneous heating working mode provided by an embodiment of the present application; Fig. 9 It is a structural schematic diagram of a motor heat dissipation and cabin heating working mode provided in an embodiment of the present application; Fig.10 It is a structural schematic diagram of a dehumidification working mode provided in an embodiment of the present application.

[0017] Explanation of the reference numerals in the accompanying drawings: E1, first heat exchanger; E2, second heat exchanger; P1, first water pump; P2, second water pump; P3, third water pump; W1, first water replenishment pot; W2, second water replenishment pot; W3, third water replenishment pot; F, four-way valve; T1, first three-way valve; T2, second three-way valve; T3, third three-way valve; T4, fourth three-way valve; M, motor; S1, first switch valve; S2, second switch valve; D, drying bottle; C, compressor; PT1, first pressure problem sensor; PT2, second pressure problem sensor; PT3, third pressure problem sensor; PT4, fourth pressure problem sensor. DETAILED DESCRIPTION

[0018] In order to enable those skilled in the art to better understand the technical solutions in this specification, the technical solutions in the embodiments of this specification will be clearly and completely described below in conjunction with the drawings in the embodiments of this specification. Obviously, the described embodiments are only part of the embodiments of this application, not all of the embodiments.

[0019] In the description of the embodiments of the present application, words such as "illustrative", "for example" or "for example" are used to indicate examples, illustrations or descriptions. Any embodiment or design described as "illustrative", "for example" or "for example" in the embodiments of the present application should not be interpreted as being more preferred or more advantageous than other embodiments or designs. Specifically, the use of words such as "illustrative", "for example" or "for example" is intended to present related concepts in a specific way.

[0020] In the description of the embodiments of the present application, the meaning of the term "multiple" refers to two or more. For example, multiple systems refer to two or more systems, and multiple screen terminals refer to two or more screen terminals. In addition, the terms "first" and "second" are used for descriptive purposes only and cannot be understood as indicating or implying relative importance or implicitly indicating the indicated technical features. Thus, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. The terms "include", "comprise", "have" and their variations all mean "including but not limited to", unless otherwise specifically emphasized.

[0021] First, the structure of the vehicle thermal management system of the embodiment of the present application is explained in detail. Figure 1 , is a schematic diagram of the structure of a vehicle thermal management system provided in an embodiment of the present application.

[0022] The vehicle thermal management system of the embodiment of the present application includes a cabin pipeline, a battery pipeline, a motor pipeline and a first control component. The first control component includes a first heat exchanger E1, a first control valve group and a first connecting pipeline. The first heat exchanger E1 includes a first refrigerant branch and a first heat medium branch for heat exchange. The first refrigerant branch is arranged in the cabin pipeline. The first heat medium branch and the first control valve group are respectively arranged in the first connecting pipeline. The first connecting pipeline is respectively connected to the battery pipeline and the motor pipeline. The first control valve group is used to connect the battery pipeline and / or the motor pipeline with the first heat medium branch to form a loop, so as to heat the cabin by utilizing the heat generated during the operation of the battery and / or the motor.

[0023] In this embodiment, the first refrigerant branch arranged in the cabin pipeline can exchange heat with the first heat medium branch arranged in the first connecting pipeline, and the position where the first refrigerant branch and the first heat medium branch exchange heat is the first heat exchanger E1. At the same time, the first connecting management is respectively connected to the battery pipeline and the motor pipeline, so that the heat generated during the operation of the battery and the motor can be transmitted to the first connecting pipeline, and the first heat exchanger E1 in the first connecting pipeline exchanges heat with the cabin pipeline, thereby heating the cabin. At the same time, a first control valve group is arranged in the first connecting pipeline, and the first control valve group is arranged between the first heat medium branch and the battery pipeline and / or the motor pipeline, so that the heat source for cabin heating can be selected to heat the cabin by using the heat generated during the operation of the battery and / or the motor.

[0024] After briefly introducing the function of the first control valve group, the specific structure of the first control valve group is described in detail below. Figure 1 As shown, the first control valve group includes a four-way valve F and a first three-way valve T1, the first connecting pipeline includes a first branch and a second branch, the first heat medium branch is arranged in the first branch, the first end of the first branch, the first end of the second branch, and the first end of the battery pipeline are connected, the second end of the first branch is connected to the first connecting port of the four-way valve F, the second end of the second branch is connected to the first outlet of the first three-way valve T1, the second end of the battery pipeline is connected to the second outlet of the first three-way valve T1, the second connecting port of the four-way valve F is connected to the inlet of the first three-way valve T1, and the third connecting port and the fourth connecting port of the four-way valve F are connected to the two ends of the motor pipeline respectively; The first control valve group specifically includes a four-way valve F and a first three-way valve T1. The four-way valve F is used to control the connection between the motor pipeline, the first connecting pipeline and the battery pipeline. The working state of the four-way valve F at this time is when the motor pipeline is connected to the first connecting pipeline and / or the battery. The specific control method is that the first connecting port of the four-way valve F is connected to the fourth connecting port of the four-way valve F, and the second connecting port of the four-way valve F is connected to the third connecting port of the four-way valve F.

[0025] The first outlet of the first three-way valve T1 is connected to the second branch, and the second outlet of the first three-way valve T1 is connected to the battery pipeline. Therefore, whether the battery pipeline is connected to the first connecting pipeline can be achieved by controlling the inlet of the first three-way valve T1 to be connected to the first outlet or the second outlet of the first three-way valve T1.

[0026] By controlling the four-way valve F and the first three-way valve T1 in the first control valve group, the following effects can be achieved.

[0027] When the cabin is heated only by the heat generated during the operation of the motor, the first communication port of the four-way valve F is communicated with the fourth communication port of the four-way valve F, the second communication port of the four-way valve F is communicated with the third communication port of the four-way valve F, and the inlet of the first three-way valve T1 is communicated with the first outlet of the first three-way valve T1; When the cabin is heated by utilizing the heat generated during operation of the motor and the battery, the first connecting port of the four-way valve F is connected to the fourth connecting port of the four-way valve F, the second connecting port of the four-way valve F is connected to the third connecting port of the four-way valve F, and the inlet of the first three-way valve T1 is connected to the second outlet of the first three-way valve T1.

[0028] Specifically, the battery circuit also includes a first water pump P1 and a first water replenishing pot W1. The first water pump P1 is arranged in the battery circuit, and the first water replenishing pot W1 is connected to the battery circuit. The function of the water pump is to drive the heat transfer medium in the pipeline to circulate in the pipe, thereby realizing heat transfer. The function of the water replenishing pot is to replenish the heat transfer medium and maintain the liquid level of the heat transfer medium. The heat transfer medium and cold medium mentioned in this application can be water, coolant and other media with heat conductive properties, without specific limitation.

[0029] Optionally, the battery circuit further includes a first pressure-temperature sensor PT1 for monitoring the temperature and pressure in the battery circuit to monitor the operation of the battery circuit.

[0030] After introducing the two situations where the motor heats the cabin and the motor and battery heat the motor at the same time, since the motor only needs to dissipate heat and does not need to be heated, and the battery has a slow chemical reaction rate under low temperature conditions, resulting in lower battery performance, there is a need for heating the battery under low temperature conditions. Therefore, there is also a situation where the heat generated by the motor is used to heat the battery.

[0031] Specifically, when the battery is heated by utilizing the heat generated during the operation of the motor, the first connecting port of the four-way valve F is connected to the fourth connecting port of the four-way valve F, the second connecting port of the four-way valve F is connected to the third connecting port of the four-way valve F, and the inlet of the first three-way valve T1 is connected to the second outlet of the first three-way valve T1.

[0032] At this time, the first branch in the first connecting pipe only serves as a part of the heat transfer path for the motor to heat the battery, and does not exchange heat with the cabin circuit through the first heat exchanger E1.

[0033] In the three cases where the motor heats the cabin, the motor heats the battery, and the motor heats both the cabin and the battery, there is a problem that the heat generated by the motor is not sufficient or uniform. To solve this problem, a feasible implementation method is given below.

[0034] The first control assembly also includes a heater, which is disposed in the first branch; When the heat generated during the operation of the motor cannot meet the heating demand of the cabin, the inlet of the first three-way valve T1 is connected to the first outlet of the first three-way valve T1, and the heater is started; When the heat generated during the operation of the motor cannot meet the heating demand of the battery, the inlet of the first three-way valve T1 is connected to the second outlet of the first three-way valve T1, and the heater is started; When the heat generated during the operation of the motor cannot meet the heating requirements of the cabin and the battery, the inlet of the first three-way valve T1 is connected to the second outlet of the first three-way valve T1, and the heater is started.

[0035] A heater is a device that can heat the heat transfer medium in a circuit and can quickly increase the temperature of the heat transfer medium in the pipeline. Therefore, when the heat of the motor is insufficient, after the motor transfers the heat to the heat transfer medium, the heater can further heat the heat transfer medium to increase the temperature of the heat transfer medium, thereby meeting the heating needs of the cabin and / or battery.

[0036] Optionally, the first branch further includes a second pressure and temperature sensor PT2, which is disposed between the heater and the first connecting port of the four-way valve F and is used to monitor the temperature and pressure in the first branch to monitor the operation of the first branch.

[0037] After the above introduction to the connection relationship between the first control component and the battery pipeline, the motor pipeline and the cabin pipeline, the structure of the cabin pipeline in the vehicle thermal management system of the present application is explained in detail below.

[0038] Specifically, the cabin pipeline includes a refrigerant circuit and a heating circuit, the refrigerant circuit includes a main circuit, a third branch circuit and a fourth branch circuit, the third branch circuit and the fourth branch circuit are respectively connected to the main circuit to form a circuit; The system further includes a compressor C, an evaporator and a second control valve group, the compressor C is respectively arranged in the main circuit, the evaporator is arranged in the third branch circuit, the first refrigerant branch circuit is arranged in the fourth branch circuit, and the second control valve group is arranged in both the third branch circuit and the fourth branch circuit; The system further includes a heater core and a third control assembly, the third control assembly includes a second heat exchanger E2, a third control valve group and a second connecting pipeline, the second heat exchanger E2 includes a second refrigerant branch and a second heat medium branch for heat exchange, the second heat medium branch is arranged in the main circuit, the second refrigerant branch and the third control valve group are respectively arranged in the second connecting pipeline, the second connecting pipeline is connected to the heating pipeline, and the heater core is arranged in the heating pipeline; When heating the cabin, the second control valve group connects the fourth branch with the main line to form a loop, the compressor C starts, and the third control valve group connects the heating pipeline with the second refrigerant branch to form a loop; When the cabin is cooled, the second control valve group connects the third branch with the main circuit to form a loop, and compressor C starts.

[0039] With respect to the above-mentioned pipeline structure, the specific method of heating the cabin is to heat the cabin by the heat generated during the operation of the motor or battery and / or the heat of the heater. At this time, the second control valve group connects the fourth branch with the main line to form a loop, the compressor C is started, and the third control valve group connects the heating pipeline with the second refrigerant branch to form a loop. The heat generated during the operation of the motor or battery and / or the heat of the heater is transferred to the refrigerant circuit through the first heat exchanger E1, and the heat is transferred to the heating pipeline through the second heat exchanger E2 through the circulation drive of the compressor C. When the heat flows through the warm air core in the heating pipeline, the cold air in the cabin exchanges heat with the warm air core, thereby achieving cabin heating.

[0040] The specific method of cooling the cabin is to cool it through a refrigerant circuit. The refrigerant medium in the refrigerant circuit is compressed into a low-temperature state by compressor C, and the low-temperature refrigerant medium is transferred to the evaporator. At this time, the surrounding heat can be absorbed at the evaporator, thereby reducing the air temperature in the cabin and achieving cabin cooling.

[0041] Specifically, the heating pipeline also includes a second water pump P2, a second water replenishment pot W2 and a third pressure and temperature sensor PT3. The second water pump P2 is arranged between the warm air core and the first outlet of the second three-way valve T2. The second water replenishment pot W2 is connected to the heating pipeline between the second water pump P2 and the first outlet of the second three-way valve T2. The third pressure and temperature sensor PT3 is connected to the heating pipeline between the second water pump P2 and the warm air core. The functions of the second water pump P2 and the second water replenishment pot W2 are similar to those of the first water pump P1 and the first water replenishment pot W1, and will not be repeated here.

[0042] Specifically, according to different actual needs, the specific connection structure of the refrigerant circuit is as follows: The second control valve group includes a first switch valve S1 and a second switch valve S2, the first switch valve S1 is arranged in the third branch, and the second switch valve S2 is arranged in the fourth branch; When the cabin is cooled and / or dehumidified, the first switch valve S1 is opened to connect the third branch with the main path to form a loop; When the cabin is heated and / or the battery is cooled, the second switch valve S2 is opened to connect the fourth branch with the main road to form a loop.

[0043] The evaporator is arranged on the third branch, and the first switch valve S1 is used to control whether the main line is connected to the evaporator. When there is a need for cabin cooling and / or dehumidification, the first switch valve S1 is opened. At this time, the refrigerant circuit includes the main line and the third branch with the evaporator.

[0044] Optionally, the refrigerant circuit also includes an air compressor C, a fourth pressure and temperature sensor PT4, a coaxial tube and a drying bottle D. The air compressor C is arranged on the main road. The direction of the air compressor C is from the third branch or the fourth branch to the second heat exchanger E2. The fourth pressure and temperature sensor PT4 is arranged between the air compressor C and the second heat medium branch. The drying bottle D is arranged at the other end of the second heat medium branch. The coaxial tube is arranged in the main road at both ends of the second heat medium branch.

[0045] The air compressor C compresses the refrigerant into high-temperature and high-pressure gas, releases heat at the second heat exchanger E2 and condenses into liquid refrigerant, which is then dried by the drying bottle D and transmitted to the third branch and / or the fourth branch, and absorbs heat through the physical property of evaporation and heat absorption. The coaxial tube consists of two concentric inner and outer tubes, the inner tube is used for water inlet, and the outer tube is used for water return. By realizing the inflow and outflow of the refrigerant in the same pipe, the heat exchange efficiency can be improved.

[0046] The first refrigerant branch is arranged on the fourth branch, and the second switch valve S2 is used to control whether the main circuit is connected to the first refrigerant branch. When there is a need for cabin heating and / or battery cooling, the first switch valve S1 is opened. At this time, the refrigerant circuit includes the main circuit and the fourth branch with the first refrigerant branch. Therefore, heat exchange between the refrigerant circuit and the battery pipeline or the motor pipeline can be achieved through the first heat exchanger E1.

[0047] Optionally, the first switch valve S1 and the second switch valve S2 can be further configured as expansion valves, and different degrees of heating or cooling effects can be achieved by adjusting the flow rates of the expansion valves.

[0048] Based on the structure of cabin cooling, a specific structure of the heat dissipation pipeline is also extended.

[0049] The cockpit pipeline also includes a heat dissipation pipeline, the system also includes a radiator, the second connecting pipeline is also connected to the heat dissipation pipeline, and the radiator is arranged in the heat dissipation pipeline; When the cabin is cooled, the third control valve group connects the heat dissipation pipeline and the second refrigerant branch to form a loop.

[0050] The radiator connected to the heat dissipation pipeline is usually arranged outside the vehicle, and the radiator can be a heat dissipation fan. The specific type of heat dissipation equipment is not limited here. The heat in the cabin is transferred to the heat dissipation pipeline through the second heat exchanger E2, and the heat exchange between the radiator and the outside air is forced to achieve the purpose of cabin cooling. After the heat exchange, the heat transfer medium with a lower temperature flows back to the second heat exchanger E2 again, completing the circuit heat dissipation cycle.

[0051] Specifically, according to the cooling or heating requirements of the cabin and / or the battery, the heat exchange between the refrigerant circuit and the heat dissipation pipeline and the heating pipeline is controlled by the third control valve group.

[0052] The third control valve group includes a second three-way valve T2, the second connecting pipeline includes a fifth branch, the first end of the heat dissipation pipeline, the first end of the fifth branch, and the first end of the heating pipeline are connected, the second refrigerant branch is arranged in the fifth branch, the second end of the fifth branch is connected to the inlet of the second three-way valve T2, the first outlet of the second three-way valve T2 is connected to the second end of the heating pipeline, and the second outlet of the second three-way valve T2 is connected to the second end of the heat dissipation pipeline; When cooling the cabin and / or the battery, the inlet of the second three-way valve T2 is connected to the second outlet of the second three-way valve T2; When the cabin is heated, the inlet of the second three-way valve T2 is communicated with the first outlet of the second three-way valve T2.

[0053] The inlet of the second three-way valve T2 is connected to the second outlet of the second three-way valve T2, indicating that the heat dissipation pipeline and the refrigerant pipeline can exchange heat through the second heat exchanger E2, and the heat in the cabin and / or the battery can be transferred to the heat dissipation circuit through the refrigerant circuit, thereby realizing cooling of the cabin and / or the battery.

[0054] The inlet of the second three-way valve T2 is connected to the first outlet of the second three-way valve T2, indicating that the heating pipeline and the refrigerant pipeline can exchange heat through the second heat exchanger E2, and the heat in the motor and / or battery can be transferred to the heating pipeline through the refrigerant circuit, thereby realizing cabin heating.

[0055] Furthermore, considering that the motor generates a lot of heat during operation and needs to dissipate heat, the third control valve group can be used to further control whether the motor pipeline is cooled by the radiator. The specific connection structure is as follows: The third control valve group further includes a third three-way valve T3 and a fourth three-way valve T4, and the second connecting pipeline further includes a sixth branch; The third three-way valve T3 is arranged between the second outlet of the second three-way valve T2 and the second end of the heat dissipation pipeline, the inlet of the third three-way valve T3 is communicated with the second outlet of the second three-way valve T2, the first outlet of the third three-way valve T3 is communicated with the first end of the motor pipeline, and the second outlet of the third three-way valve T3 is communicated with the second end of the heat dissipation pipeline; The first end of the sixth branch is connected to the second outlet of the third three-way valve T3 and the second end of the heat dissipation pipeline, the second end of the sixth branch is connected to the first outlet of the fourth three-way valve T4, the second outlet of the fourth three-way valve T4 is connected to the first end of the heat dissipation pipeline, the first end of the fifth branch, and the first end of the heating pipeline, and the inlet of the fourth three-way valve T4 is connected to the second end of the motor pipeline; When cooling the cabin and / or the battery, the inlet of the third three-way valve T3 is connected to the second outlet of the second three-way valve T2; When only the heat is dissipated for the motor and / or the battery, the inlet of the third three-way valve T3 is connected to the second outlet of the second three-way valve T2, and the inlet of the fourth three-way valve T4 is connected to the second outlet of the fourth three-way valve T4; When the heat generated during the operation of the motor is used to heat the cabin and / or the battery, the first outlet of the third three-way valve T3 is connected to the second outlet of the second three-way valve T2, and the inlet of the fourth three-way valve T4 is connected to the first outlet of the fourth three-way valve T4.

[0056] Specifically, the fifth branch also includes a third water pump P3 and a third water replenishment pot W3. The third water pump P3 is arranged between the second outlet of the third three-way valve T3 and the first end of the sixth branch. The third water replenishment pot W3 is arranged between the third water pump P3 and the first end of the sixth branch.

[0057] After the above detailed description of the structure of the vehicle thermal management system, the working principle of the vehicle thermal management system is described in detail below based on actual conditions.

[0058] See also Figure 2 , which is a structural diagram of a cabin cooling-only working mode provided in an embodiment of the present application.

[0059] In the cabin cooling working mode only, the structure of the vehicle thermal management system is specifically set as follows: the first switch valve S1 is opened, the second switch valve S2 is closed, the inlet of the second three-way valve T2 is connected to the second outlet of the second three-way valve T2, and the inlet of the third three-way valve T3 is connected to the second outlet of the third three-way valve T3. The first three-way valve T1, the four-way valve F and the fourth three-way valve T4 are all in the closed state.

[0060] When only the cabin needs to be cooled, the refrigerant circuit and the heat dissipation pipeline in the vehicle thermal management system work, and the air compressor C compresses the gaseous refrigerant medium. The refrigerant medium releases heat at the second heat exchanger E2 and condenses into liquid. The released heat is absorbed by the heat transfer medium in the heat dissipation pipeline. The third water pump P3 drives the heat transfer medium after absorbing the heat to the radiator, and the heat transfer medium dissipates the heat to the outside of the vehicle through the radiator. On the other hand, the liquid refrigerant after releasing the heat enters the evaporator through the third branch, and absorbs the heat in the cabin air by evaporation and heat absorption, thereby realizing cabin cooling. The refrigerant evaporated into a gaseous state enters the air compressor C again, and the heat transfer medium that has released the heat is driven by the third water pump P3 to enter the second heat exchanger E2 again, realizing a heat exchange cycle.

[0061] The circulation path of the refrigerant circuit is: air compressor C-second heat medium branch (second heat exchanger E2)-drying bottle D-first switch valve S1-evaporator-air compressor C.

[0062] The circulation path of the heat dissipation pipeline is: second refrigerant branch (second heat exchanger E2)-radiator-third water pump P3-third three-way valve T3-second three-way valve T2-second refrigerant branch (second heat exchanger E2).

[0063] See also Figure 3 , is a structural schematic diagram of a battery cooling-only working mode provided in an embodiment of the present application.

[0064] In the battery cooling working mode only, the structure of the vehicle thermal management system is specifically set as follows: the first switch valve S1 is closed, the second switch valve S2 is opened, the inlet of the second three-way valve T2 is connected to the second outlet of the second three-way valve T2, the inlet of the third three-way valve T3 is connected to the second outlet of the third three-way valve T3, the inlet of the first three-way valve T1 is connected to the second outlet of the first three-way valve T1, the first connecting port of the four-way valve F is connected to the second connecting port, and the fourth three-way valve T4 is in a closed state.

[0065] When only the battery needs to be cooled, the first water pump P1 drives the low-temperature heat medium to enter the battery pack for heat exchange, so as to achieve the purpose of cooling and dissipating the heat of the battery pack. After absorbing the heat, the heat medium transfers the heat to the cold medium in the cold medium circuit through the first heat exchanger E1, and the cold medium transfers the heat to the heat transfer medium in the heat dissipation pipeline through the second heat exchanger E2, and finally releases the heat through the radiator. Since the circulation path of the heat dissipation pipeline is consistent with the above embodiment, it will not be repeated here.

[0066] The circulation path of the battery pipeline is: first water pump P1-battery pack-first three-way valve T1-four-way valve F-first heat medium branch (first heat exchanger E1)-first water pump P1.

[0067] The circulation path of the refrigerant circuit is: air compressor C-second heat medium branch (second heat exchanger E2)-drying bottle D-second switch valve S2-first refrigerant branch (first heat exchanger E1)-air compressor C.

[0068] See also Figure 4 , which is a structural schematic diagram of a cabin and battery simultaneous cooling working mode provided in an embodiment of the present application.

[0069] In the cabin and battery cooling working mode, the structure of the vehicle thermal management system is specifically set as follows: the first switch valve S1 and the second switch valve S2 are opened at the same time, the inlet of the second three-way valve T2 is connected to the second outlet of the second three-way valve T2, the inlet of the third three-way valve T3 is connected to the second outlet of the third three-way valve T3, the first outlet of the third three-way valve T3 is connected to the second outlet of the third three-way valve T3, the inlet of the first three-way valve T1 is connected to the second outlet of the first three-way valve T1, the first connecting port of the four-way valve F is connected to the second connecting port, the third connecting port of the four-way valve F is connected to the fourth connecting port, and the inlet of the fourth three-way valve T4 is connected to the second outlet of the fourth three-way valve T4.

[0070] When the cabin and the battery need to be cooled at the same time, the motor also needs to dissipate heat because the temperature increase rate of the motor is higher than the problem increase rate of the battery. The third water pump P3 drives the low-temperature heat transfer medium to the motor to exchange heat with the motor. The motor transfers the heat to the heat transfer medium, which increases the temperature of the heat transfer medium and achieves the purpose of motor heat dissipation. The heat transfer medium carrying heat is continued to be driven by the third water pump P3, and reaches the radiator through the fourth three-way valve T4 to dissipate heat, and obtains a heat transfer medium with a lower temperature again. In the refrigerant circuit, the main road is connected to the third branch and the fourth branch respectively. Part of the liquid refrigerant driven by the air compressor C evaporates and absorbs heat through the evaporator to achieve cabin cooling, and part of it absorbs heat in the battery pack at the first heat exchanger E1 to achieve battery cooling. The refrigerant that becomes gaseous after absorbing heat enters the air compressor C again to achieve circulation.

[0071] The circulation path of the refrigerant circuit is: air compressor C-second heat medium branch (second heat exchanger E2)-drying bottle D-first switch valve S1 / second switch valve S2-evaporator / first refrigerant branch (first heat exchanger E1)-air compressor C.

[0072] The circulation path of the motor pipeline is: third water pump P3-third three-way valve T3-motor-four-way valve F-fourth three-way valve T4-radiator-third water pump P3.

[0073] See also Figure 5 , is a structural schematic diagram of a battery heating-only working mode provided in an embodiment of the present application.

[0074] In the battery heating working mode only, the structure of the vehicle thermal management system is specifically set as follows: the inlet of the first three-way valve T1 is connected to the second outlet of the first three-way valve T1, the first connecting port of the four-way valve F is connected to the fourth connecting port of the four-way valve F, the second connecting port of the four-way valve F is connected to the third connecting port of the four-way valve F, the inlet of the fourth three-way valve T4 is connected to the first outlet, and the first outlet of the second three-way valve T2 is connected to the second outlet of the second three-way valve T2.

[0075] When only the battery needs to be heated, there is no need to heat the cabin through the first heat exchanger E1. The battery can be heated by the heat generated by the motor. The heat in the motor pipeline is transferred to the battery pipeline by the heat transfer medium through the third water pump P3. The heat is transferred to the battery to complete the heating and then returns to the third water pump P3.

[0076] Optionally, the third water pump P3 and the first water pump P1 can be turned on at the same time to avoid slow heating efficiency caused by too long a pipeline path. The heating efficiency can be improved by driving the two water pumps in the same direction.

[0077] The circulation path for the motor to heat the battery is: third water pump P3-third three-way valve T3-(motor heat dissipation point)-four-way valve F-first heat medium branch-first water pump P1-(battery heating point)-first three-way valve T1-four-way valve F-fourth three-way valve T4-third water pump P3.

[0078] See also Figure 6 , which is a structural schematic diagram of a cabin heating-only working mode provided in an embodiment of the present application.

[0079] In the cabin heating working mode only, the structure of the vehicle thermal management system is specifically set as follows: the inlet of the first three-way valve T1 is connected to the first outlet of the first three-way valve T1, the first connecting port of the four-way valve F is connected to the fourth connecting port of the four-way valve F, the second connecting port of the four-way valve F is connected to the third connecting port of the four-way valve F, the inlet of the second three-way valve T2 is connected to the first outlet of the second three-way valve T2, the first switch valve S1 is closed, the second switch valve S2 is opened, the first outlet of the third three-way valve T3 is connected to the second outlet of the third three-way valve T3, and the inlet of the fourth three-way valve T4 is connected to the first outlet of the fourth three-way valve T4.

[0080] When the cabin is heated only by the heat generated during the operation of the motor, the heat generated by the battery after a period of operation is sufficient to maintain the temperature of the battery, but there is still a heating demand in the cabin, so the cabin can be heated by the heat generated during the operation of the motor. The heat generated by the motor is transferred to the heat transfer medium in the motor pipeline. The heat transfer medium with heat is driven by the third water pump P3, and comes to the first heat medium branch of the first heat exchanger E1 through the four-way valve F, and transfers the heat to the refrigerant circuit. After obtaining the heat, the refrigerant medium transfers the heat to the heating pipeline at the second heat exchanger E2 through the refrigerant circuit, and releases the heat at the heater core. After the heat transfer, the heat transfer medium returns to the third water pump P3 through the first three-way valve T1, the four-way valve F and the fourth three-way valve T4 to complete the cycle.

[0081] The circulation path for the motor to heat the cabin is: third water pump P3-third three-way valve T3-(motor heat dissipation point)-four-way valve F-first branch-second branch-first three-way valve T1-four-way valve F-fourth three-way valve T4-third water pump P3.

[0082] The circulation path of the refrigerant circuit has been explained in detail in the above embodiments and will not be repeated here.

[0083] The circulation path of the heating pipeline is: second water pump P2-warm air core-second heat medium branch-second three-way valve T2-second water pump P2.

[0084] On this basis, when the heat generated by the motor during operation is sufficient to meet the heating needs of the cabin, and the heat generated by the motor is excessive and there is a need for heat dissipation, the fourth three-way valve T4 can be adjusted to connect the radiator to the motor pipeline, thereby meeting part of the heat dissipation needs of the motor. The specific adjustment of the fourth three-way valve T4 is: the inlet of the fourth three-way valve T4 is connected to the second outlet of the fourth three-way valve T4.

[0085] At this time, the circulation path for the motor to heat the cabin and dissipate heat is: third water pump P3-third three-way valve T3-(motor heat dissipation point)-four-way valve F-first branch-second branch-first three-way valve T1-four-way valve F-fourth three-way valve T4-radiator-third water pump P3.

[0086] See also Figure 7 , which is a structural schematic diagram of a cockpit and battery simultaneous heating working mode provided in an embodiment of the present application.

[0087] In the working mode in which the cabin and the battery are heated simultaneously by the heater, the structure of the thermal management system of the whole vehicle is specifically configured as follows: the inlet of the first three-way valve T1 is connected with the second outlet of the first three-way valve T1, the first connecting port of the four-way valve F is connected with the second connecting port of the four-way valve F, the heater is turned on, the first switch valve S1 is closed, the second switch valve S2 is turned on, and the inlet of the second three-way valve T2 is connected with the second outlet of the second three-way valve T2.

[0088] When the car is just started or the ambient temperature is low, the motor heat is low, and when the cabin and battery need to be heated, the heater can be used to heat the battery and cabin at the same time. The heater is set in the first branch, and the heater can heat the heat transfer medium. The first water pump P1 drives the heat transfer medium to the battery heating point and the first heat medium branch. The heat transfer medium releases part of the heat at the battery heating point to heat the battery, and at the same time conducts part of the heat to the first refrigerant branch at the first heat medium branch, and transfers the heat to the heater core through the second heat exchanger E2 for release, thereby achieving simultaneous heating of the cabin and the battery.

[0089] The circulation path of the battery heating part is: first water pump P1 - battery heating point - first three-way valve T1 - four-way valve F - heater - first heat medium branch - first water pump P1.

[0090] The circulation paths of the refrigerant circuit and the heating pipeline have been explained in detail in the above embodiments and will not be repeated here.

[0091] See also Figure 8 , which is a structural schematic diagram of another cockpit and battery simultaneous heating working mode provided in an embodiment of the present application.

[0092] In the working mode in which the heat generated during the operation of the motor is used to heat the cabin and the battery at the same time, the structure of the vehicle thermal management system is specifically set as follows: the inlet of the first three-way valve T1 is connected to the second outlet of the first three-way valve T1. The first connecting port of the four-way valve F is connected to the fourth connecting port of the four-way valve F, and the second connecting port of the four-way valve F is connected to the third connecting port of the four-way valve F. The first switch valve S1 is closed, and the second switch valve S2 is opened. The inlet of the second three-way valve T2 is connected to the first outlet of the second three-way valve T2. The first outlet of the third three-way valve T3 is connected to the second outlet of the third three-way valve T3. The inlet of the fourth three-way valve T4 is connected to the second outlet of the fourth three-way valve T4.

[0093] When the motor heats the cabin and the battery at the same time, that is, the motor has a heat dissipation requirement, the heat generated by the motor during operation is transferred to the heat transfer medium in the motor pipeline, and the third water pump P3 then drives the heat transfer medium with heat to the first heat medium pipeline through the four-way valve F, and transfers the heat to the refrigerant circuit through the first heat exchanger E1. The heat is transmitted to the second heat exchanger E2 through the refrigerant medium in the refrigerant circuit, and the heat is transferred to the heat medium in the heating pipeline through the second heat exchanger E2. The heat medium with heat is driven to the heater core through the second water pump P2 to achieve cabin heating. On the other hand, the heat medium after passing through the first heat medium pipeline heats the battery pack through the battery pipeline. Finally, the heat medium that provides heat to the cabin and the battery at the same time can release excess heat at the radiator.

[0094] The circulation path for the motor to heat the battery and the circulation path for the motor to heat the cabin have been explained in detail in the above embodiments and will not be repeated here.

[0095] See also Fig. 9 , which is a structural schematic diagram of a motor heat dissipation and cabin heating working mode provided in an embodiment of the present application.

[0096] In the motor cooling and cabin heating working modes, the battery has two situations: heating and cooling. Except for the setting of the four-way valve F, the other structural settings in the vehicle thermal management system are consistent. The same parts are as follows: the inlet of the first three-way valve T1 is connected to the second outlet of the first three-way valve T1. The first outlet of the second three-way valve T2 is connected to the second outlet of the second three-way valve T2. The inlet of the fourth three-way valve T4 is connected to the second outlet of the fourth three-way valve T4.

[0097] The difference in the battery heating situation is that the first communication port of the four-way valve F is communicated with the fourth communication port of the four-way valve F, and the second communication port of the four-way valve F is communicated with the third communication port of the four-way valve F.

[0098] The difference in the battery cooling situation is that the first communication port of the four-way valve F is connected to the second communication port of the four-way valve F, and the third communication port of the four-way valve F is connected to the fourth communication port of the four-way valve F.

[0099] In the case of motor heat dissipation and battery heat dissipation, the motor pipeline and the battery pipeline form a loop at the same time, and the heat is dissipated through the radiator at the same time; in the case of motor heat dissipation and battery heating, the heat generated during the operation of the motor is relatively high, and there is still a need for heat dissipation after the battery is heated, so part of the heat generated by the motor is used to heat the battery, and the remaining heat is dissipated through the radiator. Therefore, the structure of the vehicle thermal management system for these two motor heat dissipation situations is the same. Optionally, the first water pump P1 and the third water pump P3 can work at the same time to improve the heat exchange efficiency.

[0100] The circulation paths of motor heat dissipation, battery heating, battery cooling, refrigerant circuit and heating pipeline have been explained in detail in the above embodiments and will not be repeated here.

[0101] See also Fig.10 , which is a structural schematic diagram of a dehumidification working mode provided in an embodiment of the present application.

[0102] In the dehumidification working mode, the motor and the battery can use the generated heat for heating and dehumidifying the cabin. At this time, the structure of the vehicle thermal management system is specifically set as follows: the inlet of the first three-way valve T1 is connected to the second outlet of the first three-way valve T1. The first connecting port of the four-way valve F is connected to the fourth connecting port of the four-way valve F, and the second connecting port of the four-way valve F is connected to the third connecting port of the four-way valve F. The first switch valve S1 is opened, and the second switch valve S2 is opened. The inlet of the second three-way valve T2 is connected to the first outlet of the second three-way valve T2. The first outlet of the third three-way valve T3 is connected to the second outlet of the third three-way valve T3. The inlet of the fourth three-way valve T4 is connected to the second outlet of the fourth three-way valve T4.

[0103] The motor and battery dissipate heat through the motor pipeline and the battery pipeline via the radiator. At the same time, part of the heat in the motor is transferred to the refrigerant circuit through the first heat exchanger E1. The compressor C drives the heat of the evaporator and the first refrigerant branch to the second heat exchanger E2. The heat is transferred to the heating pipeline and released at the heater core, thereby completing cabin heating and dehumidification.

[0104] The heating circuit, the refrigerant circuit, the circulation path for simultaneous heat dissipation of the motor and the battery have been explained in detail in the above embodiments and will not be repeated here.

[0105] In the above embodiments, the description of each embodiment has its own emphasis. For parts that are not described in detail in a certain embodiment, reference can be made to the relevant descriptions of other embodiments.

[0106] The above are only exemplary embodiments of the present disclosure and cannot be used to limit the scope of the present disclosure. That is, any equivalent changes and modifications made according to the teachings of the present disclosure are still within the scope of the present disclosure. After considering the disclosure of the specification and the truth of practice, it will be easy for those skilled in the art to think of other embodiments of the present disclosure. This application is intended to cover any variation, use or adaptive change of the present disclosure, which follows the general principles of the present disclosure and includes common knowledge or customary technical means in the technical field that are not recorded in the present disclosure.

Claims

1. A vehicle thermal management system, characterized in that: The system includes a cabin pipeline, a battery pipeline, a motor pipeline and a first control assembly, the first control assembly includes a first heat exchanger, a first control valve group and a first connecting pipeline, the first heat exchanger includes a first refrigerant branch and a first heat medium branch for heat exchange, the first refrigerant branch is arranged in the cabin pipeline, the first heat medium branch and the first control valve group are respectively arranged in the first connecting pipeline, and the first connecting pipeline is respectively connected to the battery pipeline and the motor pipeline; The first control valve group is used to connect the battery pipeline and / or the motor pipeline with the first heat medium branch to form a loop, so as to heat the cabin by utilizing the heat generated during the operation of the battery and / or the motor.

2. The vehicle thermal management system according to claim 1, characterized in that: The first control valve group includes a four-way valve and a first three-way valve, the first connecting pipeline includes a first branch and a second branch, the first heat medium branch is arranged in the first branch, the first end of the first branch, the first end of the second branch, and the first end of the battery pipeline are connected, the second end of the first branch is connected to the first connecting port of the four-way valve, the second end of the second branch is connected to the first outlet of the first three-way valve, the second end of the battery pipeline is connected to the second outlet of the first three-way valve, the second connecting port of the four-way valve is connected to the inlet of the first three-way valve, and the third connecting port and the fourth connecting port of the four-way valve are connected to the two ends of the motor pipeline respectively; When the cabin is heated only by the heat generated during the operation of the motor, the first communication port of the four-way valve is communicated with the fourth communication port of the four-way valve, the second communication port of the four-way valve is communicated with the third communication port of the four-way valve, and the inlet of the first three-way valve is communicated with the first outlet of the first three-way valve; When the cabin is heated by utilizing the heat generated during operation of the motor and the battery, the first connecting port of the four-way valve is connected to the fourth connecting port of the four-way valve, the second connecting port of the four-way valve is connected to the third connecting port of the four-way valve, and the inlet of the first three-way valve is connected to the second outlet of the first three-way valve.

3. The vehicle thermal management system according to claim 2, characterized in that: When the battery is heated by utilizing the heat generated during operation of the motor, the first connecting port of the four-way valve is connected to the fourth connecting port of the four-way valve, the second connecting port of the four-way valve is connected to the third connecting port of the four-way valve, and the inlet of the first three-way valve is connected to the second outlet of the first three-way valve.

4. The vehicle thermal management system according to claim 3, characterized in that: The first control assembly further includes a heater, and the heater is disposed in the first branch; When the heat generated by the motor during operation cannot meet the heating demand of the cabin, the inlet of the first three-way valve is connected to the first outlet of the first three-way valve, and the heater is started; When the heat generated by the motor during operation cannot meet the heating demand of the battery, the inlet of the first three-way valve is connected to the second outlet of the first three-way valve, and the heater is started; When the heat generated during the operation of the motor cannot meet the heating requirements of the cabin and the battery, the inlet of the first three-way valve is connected to the second outlet of the first three-way valve, and the heater is started.

5. The vehicle thermal management system according to any one of claims 1 to 4, characterized in that: The cabin pipeline includes a refrigerant circuit and a heating circuit, the refrigerant circuit includes a main circuit, a third branch circuit and a fourth branch circuit, the third branch circuit and the fourth branch circuit are respectively connected to the main circuit to form a circuit; The system further includes a compressor, an evaporator and a second control valve group, wherein the compressor is respectively arranged in the main circuit, the evaporator is arranged in the third branch circuit, the first refrigerant branch circuit is arranged in the fourth branch circuit, and the second control valve group is arranged in both the third branch circuit and the fourth branch circuit; The system further includes a heater core and a third control assembly, the third control assembly includes a second heat exchanger, a third control valve group and a second connecting pipeline, the second heat exchanger includes a second refrigerant branch and a second heat medium branch for heat exchange, the second heat medium branch is arranged in the main circuit, the second refrigerant branch and the third control valve group are respectively arranged in the second connecting pipeline, the second connecting pipeline is connected to the heating pipeline, and the heater core is arranged in the heating pipeline; When heating the cabin, the second control valve group connects the fourth branch with the main line to form a loop, the compressor is started, and the third control valve group connects the heating pipeline with the second refrigerant branch to form a loop; When the cabin is cooled, the second control valve group connects the third branch and the main line to form a loop, and the compressor is started.

6. The vehicle thermal management system according to claim 5, characterized in that: The second control valve group includes a first switch valve and a second switch valve, the first switch valve is arranged in the third branch, and the second switch valve is arranged in the fourth branch; When the cabin is cooled and / or dehumidified, the first switch valve is opened to connect the third branch with the main path to form a loop; When the cabin is heated and / or the battery is cooled, the second switch valve is opened to connect the fourth branch with the main road to form a loop.

7. The vehicle thermal management system according to claim 5, characterized in that: The cockpit pipeline further includes a heat dissipation pipeline, the system further includes a radiator, the second connecting pipeline is further connected to the heat dissipation pipeline, and the radiator is arranged in the heat dissipation pipeline; When the cabin is cooled, the third control valve group connects the heat dissipation pipeline and the second refrigerant branch to form a loop.

8. The vehicle thermal management system according to claim 7, characterized in that: The third control valve group includes a second three-way valve, the second connecting pipeline includes a fifth branch, the first end of the heat dissipation pipeline, the first end of the fifth branch, and the first end of the heating pipeline are connected, the second refrigerant branch is arranged in the fifth branch, the second end of the fifth branch is connected to the inlet of the second three-way valve, the first outlet of the second three-way valve is connected to the second end of the heating pipeline, and the second outlet of the second three-way valve is connected to the second end of the heat dissipation pipeline; When cooling the cabin and / or the battery, the inlet of the second three-way valve is connected to the second outlet of the second three-way valve; When the cabin is heated, the inlet of the second three-way valve is communicated with the first outlet of the second three-way valve.

9. The vehicle thermal management system according to claim 8, characterized in that: The third control valve group further includes a third three-way valve and a fourth three-way valve, and the second connecting pipeline further includes a sixth branch; The third three-way valve is arranged between the second outlet of the second three-way valve and the second end of the heat dissipation pipeline, the inlet of the third three-way valve is communicated with the second outlet of the second three-way valve, the first outlet of the third three-way valve is communicated with the first end of the motor pipeline, and the second outlet of the third three-way valve is communicated with the second end of the heat dissipation pipeline; The first end of the sixth branch is communicated with the second outlet of the third three-way valve and the second end of the heat dissipation pipeline, the second end of the sixth branch is communicated with the first outlet of the fourth three-way valve, the second outlet of the fourth three-way valve is communicated with the first end of the heat dissipation pipeline, the first end of the fifth branch, and the first end of the heating pipeline, and the inlet of the fourth three-way valve is communicated with the second end of the motor pipeline; When cooling the cabin and / or the battery, the inlet of the third three-way valve is connected to the second outlet of the second three-way valve; When only the heat is dissipated for the motor and / or the battery, the inlet of the third three-way valve is communicated with the second outlet of the second three-way valve, and the inlet of the fourth three-way valve is communicated with the second outlet of the fourth three-way valve; When the cabin and / or the battery are heated by utilizing the heat generated during operation of the motor, the first outlet of the third three-way valve is connected to the second outlet of the second three-way valve, and the inlet of the fourth three-way valve is connected to the first outlet of the fourth three-way valve.

10. A vehicle, characterized in that: A vehicle thermal management system comprising any one of claims 1-9.

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