A whole vehicle thermal management system and vehicle

Abstract

The application provides a whole vehicle thermal management system and a vehicle, and relates to the technical field of automobile 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 group and a first communication pipeline. The first heat exchanger comprises 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 arranged in the first communication pipeline. The first communication pipeline is in communication with the battery pipeline and the motor pipeline. The first control valve group is used for connecting the battery pipeline and / or the motor pipeline and the first heat medium branch into a loop to heat the cabin by using the heat generated in the working process of the battery and / or the motor. The whole vehicle thermal management system can adapt to heat exchange in multiple working modes, so that the energy in the working process of the vehicle can be fully utilized.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of automobile thermal management, in particular to a whole vehicle thermal management system and a vehicle. BACKGROUND

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

[0003] The current new energy vehicle thermal management system heats the heat transfer medium by high pressure water positive temperature coefficient (WPTC) to realize automobile heating, and realizes automobile refrigeration by the heat released in the compression process of the air compressor. Since the WPTC heating and the air compressor refrigeration are relatively independent, there is heat insulation between the two parts, which leads to insufficient energy utilization. SUMMARY

[0004] The present application provides a whole vehicle thermal management system and a vehicle, by designing a motor pipeline, a battery pipeline and a cabin pipeline, so that heat can be transmitted through the medium, and at the same time, through the control action of the first control assembly, the whole vehicle thermal management system can adapt to heat exchange under multiple working modes, so as to fully utilize the energy in the working process of the vehicle.

[0005] In a first aspect, the present application provides a monitoring system for a solar cell, which 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 group and a first communication pipeline, the first heat exchanger comprises 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 arranged in the first communication pipeline respectively, and the first communication pipeline is in communication with the battery pipeline and the motor pipeline respectively.

[0006] The first control valve group is used to connect the battery pipeline and / or the motor pipeline with the first heat medium branch into a loop, so as to heat the cabin by using the heat generated in the working process of the battery and / or the motor.

[0007] In some embodiments, the first control valve group comprises a four-way valve and a first three-way valve, the first communication pipeline comprises a first branch and a second branch, the first heat medium branch is arranged in the first branch, a first end of the first branch, a first end of the second branch and a first end of the battery pipeline are in communication, a second end of the first branch and a first communication port of the four-way valve are in communication, a second end of the second branch and a first outlet of the first three-way valve are in communication, a second end of the battery pipeline and a second outlet of the first three-way valve are in communication, a second communication port of the four-way valve and an inlet of the first three-way valve are in communication, a third communication port and a fourth communication port of the four-way valve are in communication with two ends of the motor pipeline respectively;

[0008] 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 in communication with the fourth communication port of the four-way valve, the second communication port of the four-way valve is in communication with the third communication port of the four-way valve, and the inlet of the first three-way valve is in communication with the first outlet of the first three-way valve;

[0009] When the cabin is heated by the heat generated during the operation of the motor and the battery, the first communication port of the four-way valve is in communication with the fourth communication port of the four-way valve, the second communication port of the four-way valve is in communication with the third communication port of the four-way valve, and the inlet of the first three-way valve is in communication with the second outlet of the first three-way valve.

[0010] In some embodiments, when the battery is heated by the heat generated during the operation of the motor, the first communication port of the four-way valve is in communication with the fourth communication port of the four-way valve, the second communication port of the four-way valve is in communication with the third communication port of the four-way valve, and the inlet of the first three-way valve is in communication with the second outlet of the first three-way valve.

[0011] In some embodiments, the first control assembly further comprises a heater arranged in the first branch;

[0012] 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 is in communication with the first outlet of the first three-way valve, and the heater is started;

[0013] 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 is in communication with the second outlet of the first three-way valve, and the heater is started;

[0014] When the heat generated during the operation of the motor cannot meet the heating demand of the cabin and the battery, the inlet of the first three-way valve is in communication with the second outlet of the first three-way valve, and the heater is started.

[0015] In some embodiments, the cabin pipeline comprises a refrigerant circuit and a heating pipeline, the refrigerant circuit comprises a main circuit, a third branch circuit and a fourth branch circuit, the third branch circuit and the fourth branch circuit are connected into a loop with the main circuit respectively;

[0016] The system further comprises a compressor, an evaporator and a second control valve group, the compressor is arranged in the main circuit respectively, 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 the third branch circuit and the fourth branch circuit simultaneously;

[0017] The system further comprises a heater core and a third control assembly, the third control assembly comprises a second heat exchanger, a third control valve group and a second communication pipeline, the second heat exchanger comprises a second refrigerant branch circuit and a second heat medium branch circuit for heat exchange, the second heat medium branch circuit is arranged in the main circuit, the second refrigerant branch circuit and the third control valve group are arranged in the second communication pipeline respectively, the second communication pipeline is in communication with the heating pipeline, and the heater core is arranged in the heating pipeline;

[0018] When heating the cabin, the second control valve group connects the fourth branch circuit into a loop with the main circuit, the compressor is started, and the third control valve group connects the heating pipeline into a loop with the second refrigerant branch circuit.

[0019] When refrigerating the cabin, the second control valve group connects the third branch circuit into a loop with the main circuit, and the compressor is started.

[0020] In some embodiments, the second control valve group comprises a first switch valve and a second switch valve, the first switch valve is arranged in the third branch circuit, and the second switch valve is arranged in the fourth branch circuit.

[0021] When refrigerating and / or dehumidifying the cabin, the first switch valve is opened to connect the third branch circuit into a loop with the main circuit.

[0022] When heating the cabin and / or refrigerating the battery, the second switch valve is opened to connect the fourth branch circuit into a loop with the main circuit.

[0023] In some embodiments, the cabin pipeline further comprises a heat dissipation pipeline, the system further comprises a heat sink, the second communication pipeline is further in communication with the heat dissipation pipeline, and the heat sink is arranged in the heat dissipation pipeline.

[0024] When refrigerating the cabin, the third control valve group connects the heat dissipation pipeline into a loop with the second refrigerant branch circuit.

[0025] In some embodiments, the third control valve group comprises a second three-way valve, the second communication pipeline comprises a fifth branch, a first end of the heat dissipation pipeline, a first end of the fifth branch, a first end of the heating pipeline are in communication, the second refrigerant branch is arranged in the fifth branch, a second end of the fifth branch is in communication with an inlet of the second three-way valve, a first outlet of the second three-way valve is in communication with a second end of the heating pipeline, a second outlet of the second three-way valve is in communication with a second end of the heat dissipation pipeline;

[0026] When the cabin is refrigerated and / or the battery is refrigerated, the inlet of the second three-way valve is in communication with the second outlet of the second three-way valve;

[0027] When the cabin is heated, the inlet of the second three-way valve is in communication with the first outlet of the second three-way valve.

[0028] In some embodiments, the third control valve group further comprises a third three-way valve and a fourth three-way valve, and the second communication pipeline further comprises a sixth branch;

[0029] 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 in communication with the second outlet of the second three-way valve, the first outlet of the third three-way valve is in communication with the first end of the motor pipeline, and the second outlet of the third three-way valve is in communication with the second end of the heat dissipation pipeline;

[0030] A first end of the sixth branch is in communication with the second outlet of the third three-way valve and the second end of the heat dissipation pipeline, a second end of the sixth branch is in communication with a first outlet of the fourth three-way valve, a second outlet of the fourth three-way valve is in communication 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 in communication with the second end of the motor pipeline;

[0031] When the cabin is refrigerated and / or the battery is refrigerated, the inlet of the third three-way valve is in communication with the second outlet of the second three-way valve;

[0032] When only the motor is heat-dissipated and / or the battery is heat-dissipated, the inlet of the third three-way valve is in communication with the second outlet of the second three-way valve, and the inlet of the fourth three-way valve is in communication with the second outlet of the fourth three-way valve;

[0033] When the cabin and / or the battery are heated by using the heat generated during the operation of the motor, the first outlet of the third three-way valve is in communication with the second outlet of the second three-way valve, and the inlet of the fourth three-way valve is in communication with the first outlet of the fourth three-way valve.

[0034] In a second aspect, the application provides a vehicle comprising the whole vehicle thermal management system as described above.

[0035] In summary, the application provides the following beneficial effects:

[0036] The motor pipeline, the battery pipeline and the cabin pipeline are designed to enable heat to be transferred through the medium, and the first control assembly is used to control the heat exchange of the whole vehicle thermal management system in multiple working modes, so that the energy in the vehicle working process can be fully utilized. BRIEF DESCRIPTION OF DRAWINGS

[0037] Figure 1 is a structural schematic diagram of a whole vehicle thermal management system provided by an embodiment of the application;

[0038] Figure 2 is a structural schematic diagram of a cabin refrigeration only working mode provided by an embodiment of the application;

[0039] Figure 3 is a structural schematic diagram of a battery refrigeration only working mode provided by an embodiment of the application;

[0040] Figure 4 is a structural schematic diagram of a cabin and battery refrigeration working mode provided by an embodiment of the application;

[0041] Figure 5 is a structural schematic diagram of a battery heating only working mode provided by an embodiment of the application;

[0042] Figure 6 is a structural schematic diagram of a cabin heating only working mode provided by an embodiment of the application;

[0043] Figure 7 is a structural schematic diagram of a cabin and battery heating working mode provided by an embodiment of the application;

[0044] Figure 8 is a structural schematic diagram of another cabin and battery heating working mode provided by an embodiment of the application;

[0045] Figure 9 is a structural schematic diagram of a motor heat dissipation and cabin heating working mode provided by an embodiment of the application;

[0046] Figure 10 is a structural schematic diagram of a dehumidification working mode provided by an embodiment of the application.

[0047] E1, first heat exchanger; E2, second heat exchanger; P1, first water pump; P2, second water pump; P3, third water pump; W1, first water supplement kettle; W2, second water supplement kettle; W3, third water supplement kettle; 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 on-off valve; S2, second on-off 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

[0048] In order to enable persons skilled in the art to better understand the technical solutions in the specification, the technical solutions in the specification will be clearly and completely described below in combination with the accompanying drawings in the specification. Obviously, the described embodiments are only some of the embodiments of the present application, not all the embodiments.

[0049] In the description of the embodiments of the present application, the words "exemplary", "for example", or "for instance" are used to mean serving as an example, instance, or illustration. Any embodiment or design solution described as "exemplary", "for example", or "for instance" in the embodiments of the present application should not be construed as being more preferred or advantageous than other embodiments or design solutions. In fact, the words "exemplary", "for example", or "for instance" are used to present related concepts in a specific manner.

[0050] In the description of the embodiments of the present application, the term "a plurality of" means two or more. For example, a plurality of systems means two or more systems, and a plurality of screen terminals means two or more screen terminals. In addition, the terms "first" and "second" are used only for the purpose of description, and should not be interpreted or implied to indicate or suggest relative importance or implicitly indicate the indicated technical features. Therefore, the features defined with "first" and "second" can explicitly or implicitly include one or more of the features. The terms "include", "contain", "have", and their variants mean "include but are not limited to", unless otherwise specifically emphasized.

[0051] First, the structure of the whole vehicle thermal management system of the embodiments of the present application is explained in detail. Please refer to Figure 1 , a structural schematic diagram of a whole vehicle thermal management system provided by the embodiments of the present application.

[0052] The vehicle thermal management system of this application embodiment includes a cabin piping, a battery piping, a motor piping, and a first control component. The first control component includes a first heat exchanger E1, a first control valve group, and a first connecting pipe. The first heat exchanger E1 includes a first refrigerant branch and a first heat medium branch for heat exchange. The first refrigerant branch is disposed in the cabin piping, and the first heat medium branch and the first control valve group are respectively disposed in the first connecting pipe. The first connecting pipe is respectively connected to the battery piping and the motor piping.

[0053] The first control valve group is used to connect the battery line and / or motor line to the first heat medium branch to form a loop, so as to use the heat generated during the operation of the battery and / or motor to heat the cabin.

[0054] In this embodiment, a first refrigerant branch in the cockpit piping can exchange heat with a first heat medium branch in the first connecting pipe. The location where the first refrigerant branch and the first heat medium branch exchange heat is the first heat exchanger E1. Simultaneously, the first connecting pipe is connected to both the battery piping and the motor piping. Therefore, the heat generated during the operation of the battery and motor can be transferred to the first connecting pipe and exchanged with the cockpit piping at the first heat exchanger E1, thereby heating the cockpit. Furthermore, a first control valve assembly is installed in the first connecting pipe, positioned between the first heat medium branch and the battery piping and / or the motor piping. This allows for the selection of a heat source for cockpit heating, utilizing the heat generated during the operation of the battery and / or the motor to heat the cockpit.

[0055] After briefly introducing the function of the first control valve assembly, the specific structure of the first control valve assembly will be described in detail below. (See attached text.) 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 set 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. The third connecting port and the fourth connecting port of the four-way valve F are respectively connected to the two ends of the motor pipeline.

[0056] 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 that 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.

[0057] The first outlet of the first three-way valve T1 is connected with the second branch, and the second outlet of the first three-way valve T1 is connected with the battery pipeline, so that whether the battery pipeline is communicated with the first communication pipeline can be realized by controlling the inlet of the first three-way valve T1 to be connected with the first outlet or the second outlet of the first three-way valve T1.

[0058] By controlling the four-way valve F in the first control valve group and the first three-way valve T1, the following effects can be achieved.

[0059] 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.

[0060] When the cabin is heated by the heat generated during the operation of the motor and the battery, 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 second outlet of the first three-way valve T1.

[0061] Specifically, the battery pipeline further includes a first water pump P1 and a first water supplement kettle W1, the first water pump P1 is arranged in the battery pipeline, and the first water supplement kettle W1 is connected with the battery pipeline. The function of the water pump is to drive the heat transfer medium in the pipeline to circulate in the pipeline, so as to realize the transfer of heat. The function of the water supplement kettle is to supplement the heat transfer medium and maintain the liquid level of the heat transfer medium. The heat transfer medium and the refrigerant medium mentioned in the present application can be water, coolant and other media with heat conduction properties, which are not limited in particular.

[0062] Optionally, the battery pipeline further includes a first pressure and temperature sensor PT1 for monitoring the temperature and pressure in the battery pipeline to monitor the operation of the battery pipeline.

[0063] After the above two cases of heating the cabin by the motor and heating the motor by the motor and the battery are introduced, since the motor only needs to dissipate heat and does not need to be heated, and the chemical reaction rate of the battery is slow under low temperature conditions, resulting in low battery performance, the battery needs to be heated under low temperature conditions, so there is also a case of heating the battery by the heat generated during the operation of the motor.

[0064] Specifically, when the battery is heated 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 second outlet of the first three-way valve T1.

[0065] At this time, the first branch in the first communication pipeline 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 loop through the first heat exchanger E1.

[0066] In the three cases of the motor heating the cabin, the motor heating the battery, and the motor simultaneously heating the cabin and the battery, there is a problem of insufficient or uneven heat generated by the motor. To solve this problem, an implementable embodiment is given below.

[0067] The first control assembly further comprises a heater, which is arranged in the first branch;

[0068] 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 T1 communicates with the first outlet of the first three-way valve T1, and the heater is started;

[0069] 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 T1 communicates with the second outlet of the first three-way valve T1, and the heater is started;

[0070] When the heat generated by the motor during operation cannot meet the heating demand of the cabin and the battery, the inlet of the first three-way valve T1 communicates with the second outlet of the first three-way valve T1, and the heater is started.

[0071] The heater is a device capable of heating the heat transfer medium in the loop, which can quickly raise the temperature of the heat transfer medium in the pipeline, so that after the motor conducts heat to the heat transfer medium, the heat transfer medium is further heated by the heater to improve the temperature of the heat transfer medium, thereby meeting the heating demand of the cabin and / or the battery.

[0072] Optionally, the first branch further comprises a second pressure and temperature sensor PT2, which is arranged between the heater and the first communication port of the four-way valve F, for monitoring the temperature and pressure in the first branch to monitor the operation of the first branch.

[0073] After the above introduction of the connection relationship between the first control assembly and the battery pipeline, the motor pipeline and the cabin pipeline, the structure of the cabin pipeline in the whole vehicle thermal management system of the present application is explained in detail.

[0074] Specifically, the cabin pipeline comprises a refrigerant loop and a heating pipeline, the refrigerant loop comprises a main loop, a third branch and a fourth branch, and the third branch and the fourth branch are connected into a loop with the main loop respectively;

[0075] The system further comprises a compressor C, an evaporator and a second control valve group, the compressor C is arranged in the main circuit respectively, 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 the third branch circuit and the fourth branch circuit simultaneously;

[0076] The system further comprises a heating core and a third control assembly, the third control assembly comprises a second heat exchanger E2, a third control valve group and a second communication pipeline, the second heat exchanger E2 comprises a second refrigerant branch circuit and a second heat medium branch circuit for heat exchange, the second heat medium branch circuit is arranged in the main circuit, the second refrigerant branch circuit and the third control valve group are arranged in the second communication pipeline respectively, the second communication pipeline is in communication with the heating pipeline, and the heating core is arranged in the heating pipeline;

[0077] When the cabin is heated, the second control valve group connects the fourth branch circuit and the main circuit into a loop, the compressor C is started, and the third control valve group connects the heating pipeline and the second refrigerant branch circuit into a loop.

[0078] When the cabin is refrigerated, the second control valve group connects the third branch circuit and the main circuit into a loop, and the compressor C is started.

[0079] For the above pipeline structure, the specific way of heating the cabin is to heat the cabin by the heat generated in the working process of the motor or the battery and / or the heat of the heater, at this time, the second control valve group connects the fourth branch circuit and the main circuit into a loop, the compressor C is started, and the third control valve group connects the heating pipeline and the second refrigerant branch circuit into a loop. The heat generated in the working process of the motor or the battery and / or the heat of the heater is conducted to the refrigerant circuit through the first heat exchanger E1, and the heat is conducted to the heating pipeline through the second heat exchanger E2 by the circulation driving of the compressor C. When the heat flows through the heating core in the heating pipeline, the cold air in the cabin exchanges heat with the heating core, so as to heat the cabin.

[0080] The specific way of refrigerating the cabin is to refrigerate through the refrigerant circuit. The refrigerant medium in the refrigerant circuit is compressed into a low-temperature state by the compressor C, and the refrigerant medium in the low-temperature state is transmitted to the evaporator. At this time, the heat of the surrounding environment can be absorbed at the evaporator, so as to reduce the air temperature in the cabin and realize the refrigeration of the cabin.

[0081] Specifically, the heating pipeline further comprises a second water pump P2, a second water supplement kettle W2 and a third pressure and temperature sensor PT3. The second water pump P2 is arranged between the heating core and the first outlet of the second three-way valve T2. The second water supplement kettle 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 heating core. The functions of the second water pump P2 and the second water supplement kettle W2 are similar to those of the first water pump P1 and the first water supplement kettle W1, which will not be described here.

[0082] Specifically, for different actual needs, the specific connection structure of the refrigerant circuit is as follows:

[0083] 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;

[0084] When the cabin is refrigerated and / or dehumidified, the first switch valve S1 is opened to connect the third branch with the main line into a circuit;

[0085] When the cabin is heated and / or the battery is refrigerated, the second switch valve S2 is opened to connect the fourth branch with the main line into a circuit.

[0086] The evaporator is arranged on the third branch, and whether the main line is connected with the evaporator is controlled through the first switch valve S1; when there is a demand for cabin refrigeration and / or dehumidification, the first switch valve S1 is opened, and at this time, the refrigerant circuit includes the main line and the third branch with the evaporator.

[0087] Optionally, the refrigerant circuit further includes an air compressor C, a fourth pressure temperature sensor PT4, a coaxial pipe and a drying bottle D, the air compressor C is arranged on the main line, the direction of the air compressor C is the third branch or the fourth branch to the second heat exchanger E2, the fourth pressure 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, and the coaxial pipe is arranged in the main line at the two ends of the second heat medium branch.

[0088] The air compressor C compresses the refrigerant medium into a high-temperature and high-pressure gas, releases heat at the second heat exchanger E2 to condense into a liquid refrigerant medium, and then transmits to the third branch and / or the fourth branch after drying through the drying bottle D, and realizes heat absorption through the physical property of evaporative heat absorption. The coaxial pipe is composed of two concentric inner and outer pipes, the inner pipe is used for water inlet, and the outer pipe is used for water return. By realizing the inlet and outlet flow of the refrigerant medium in the same pipe, the heat exchange efficiency can be improved.

[0089] The first refrigerant branch is arranged on the fourth branch, and whether the main line is connected with the first refrigerant branch is controlled through the second switch valve S2; when there is a demand for cabin heating and / or battery refrigeration, the first switch valve S1 is opened, and at this time, the refrigerant circuit includes the main line and the fourth branch with the first refrigerant branch, so that the heat exchange between the refrigerant circuit and the battery pipeline or the motor pipeline can be realized through the first heat exchanger E1.

[0090] Optionally, the first switch valve S1 and the second switch valve S2 can be further arranged as expansion valves, and the flow size of the expansion valves is adjusted to realize different degrees of heating or refrigeration effect.

[0091] On the basis of the structure of the cabin refrigeration, a specific structure of the heat dissipation pipeline is also extended.

[0092] The cabin pipeline also includes a heat dissipation pipeline, and the system also includes a heat sink, the second communication pipeline also communicates with the heat dissipation pipeline, and the heat sink is arranged in the heat dissipation pipeline.

[0093] When the cabin is refrigerated, the third control valve group connects the heat dissipation pipeline with the second refrigerant branch into a loop.

[0094] The heat sink connected by the heat dissipation pipeline is usually arranged outside the vehicle, and the heat sink can be a heat dissipation fan, and the type of the specific heat dissipation device is not limited here. The heat in the cabin is conducted to the heat dissipation pipeline through the second heat exchanger E2, and the heat exchange with the outside air is forced to be carried out through the heat sink, so as to achieve the purpose of cabin refrigeration. The heat transfer medium with low temperature after heat exchange flows back to the second heat exchanger E2 again, and the heat dissipation cycle of the loop is completed.

[0095] Specifically, according to the refrigeration or heating requirements of the cabin and / or the battery, the third control valve group is used to control the heat exchange of the refrigerant loop with the heat dissipation pipeline and the heating pipeline respectively.

[0096] The third control valve group includes a second three-way valve T2, the second communication 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 communicated, the second refrigerant branch is arranged in the fifth branch, the second end of the fifth branch is communicated with the inlet of the second three-way valve T2, the first outlet of the second three-way valve T2 is communicated with the second end of the heating pipeline, and the second outlet of the second three-way valve T2 is communicated with the second end of the heat dissipation pipeline.

[0097] When the cabin and / or the battery are refrigerated, the inlet of the second three-way valve T2 is communicated with the second outlet of the second three-way valve T2.

[0098] 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.

[0099] The inlet of the second three-way valve T2 is communicated with the second outlet of the second three-way valve T2, which means that the heat dissipation pipeline and the refrigerant pipeline can exchange heat through the second heat exchanger E2, the heat in the cabin and / or the battery can be conducted to the heat dissipation loop through the refrigerant loop, and thus the cabin and / or the battery refrigeration can be realized.

[0100] The inlet of the second three-way valve T2 is communicated with the first outlet of the second three-way valve T2, which means that the heating pipeline and the refrigerant pipeline can exchange heat through the second heat exchanger E2, the heat in the motor and / or the battery can be conducted to the heating pipeline through the refrigerant loop, and thus the cabin heating can be realized.

[0101] Further, considering that the motor generates high heat during operation, the motor needs to be cooled, and the third control valve group can further control whether the motor pipeline is cooled through the radiator. The specific connection structure is as follows:

[0102] The third control valve group further includes a third three-way valve T3 and a fourth three-way valve T4, and the second communication pipeline further includes a sixth branch;

[0103] 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 cooling pipeline, the inlet of the third three-way valve T3 is in communication with the second outlet of the second three-way valve T2, the first outlet of the third three-way valve T3 is in communication with the first end of the motor pipeline, and the second outlet of the third three-way valve T3 is in communication with the second end of the cooling pipeline;

[0104] The first end of the sixth branch is in communication with the second outlet of the third three-way valve T3 and the second end of the cooling pipeline, the second end of the sixth branch is in communication with the first outlet of the fourth three-way valve T4, the second outlet of the fourth three-way valve T4 is in communication with the first end of the cooling 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 in communication with the second end of the motor pipeline;

[0105] When the cabin is cooled and / or the battery is cooled, the inlet of the third three-way valve T3 is in communication with the second outlet of the second three-way valve T2;

[0106] When only the motor is cooled and / or the battery is cooled, the inlet of the third three-way valve T3 is in communication with the second outlet of the second three-way valve T2, and the inlet of the fourth three-way valve T4 is in communication with the second outlet of the fourth three-way valve T4;

[0107] When the heat generated by the motor during operation is used to heat the cabin and / or the battery, the first outlet of the third three-way valve T3 is in communication with the second outlet of the second three-way valve T2, and the inlet of the fourth three-way valve T4 is in communication with the first outlet of the fourth three-way valve T4.

[0108] Specifically, the fifth branch further includes a third water pump P3 and a third water kettle 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, and the third water kettle W3 is arranged between the third water pump P3 and the first end of the sixth branch.

[0109] After the above detailed description of the structure of the whole vehicle thermal management system, the working principle of the whole vehicle thermal management system will be described in detail according to the actual situation.

[0110] Please refer to Figure 2 , a structure diagram of a cabin cooling only working mode provided by the embodiment of the present application.

[0111] In the only cockpit refrigeration working mode, the structure of the whole 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 communicated with the second outlet of the second three-way valve T2, and the inlet of the third three-way valve T3 is communicated with 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.

[0112] When only the cockpit needs to be refrigerated, the refrigerant circuit and the heat dissipation pipeline in the whole vehicle thermal management system work. The air compressor C compresses the gaseous refrigerant medium, the refrigerant medium releases heat at the second heat exchanger E2 and condenses into a liquid state, the released heat is absorbed by the heat transfer medium in the heat dissipation pipeline, and the third water pump P3 drives the heat transfer medium after absorbing heat to the radiator, and the heat transfer medium dissipates heat to the outside of the vehicle through the radiator. On the other hand, the liquid refrigerant medium after releasing heat enters the evaporator through the third branch, absorbs the heat in the cockpit air through evaporation heat absorption, thereby realizing cockpit refrigeration. The refrigerant medium evaporated into a gaseous state enters the air compressor C again, and the heat transfer medium after releasing heat is driven by the third water pump P3 and enters the second heat exchanger E2 again to realize heat exchange circulation.

[0113] The circulation path of the refrigerant circuit is: air compressor C-second heat medium branch (second heat exchanger E2)-dryer bottle D-first switch valve S1-evaporator-air compressor C.

[0114] 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).

[0115] Please refer to Figure 3 A structure diagram of only battery refrigeration working mode provided for the embodiment of the application.

[0116] In the only battery refrigeration working mode, the structure of the whole 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 communicated with the second outlet of the second three-way valve T2, the inlet of the third three-way valve T3 is communicated with the second outlet of the third three-way valve T3, the inlet of the first three-way valve T1 is communicated with the second outlet of the first three-way valve T1, the first communication port of the four-way valve F is communicated with the second communication port, and the fourth three-way valve T4 is in the closed state.

[0117] When only the battery needs to be cooled, the first water pump P1 drives the low-temperature heat medium into the battery pack for heat exchange, achieving the purpose of cooling the battery pack, and the heat-absorbed heat medium conducts heat to the refrigerant medium in the refrigerant circuit through the first heat exchanger E1, and the refrigerant medium conducts heat to the heat transfer medium in the heat dissipation pipeline through the second heat exchanger E2, and finally releases heat through the radiator. Since the circulation path of the heat dissipation pipeline is consistent with the above embodiment, it will not be described here.

[0118] The circulation path of the battery pipeline is: the 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.

[0119] The circulation path of the refrigerant circuit is: air compressor C-second heat medium branch (second heat exchanger E2)-dry bottle D-second switch valve S2-first refrigerant branch (first heat exchanger E1)-air compressor C.

[0120] Please refer to Figure 4 A structure diagram of a seat and battery simultaneous refrigeration working mode provided for the embodiment of the application.

[0121] In the seat and battery simultaneous refrigeration working mode, the structure of the whole vehicle thermal management system is specifically provided as follows: the first switch valve S1 and the second switch valve S2 are simultaneously opened, the inlet of the second three-way valve T2 is in communication with the second outlet of the second three-way valve T2, the inlet of the third three-way valve T3 is in communication with the second outlet of the third three-way valve T3, the first outlet of the third three-way valve T3 is in communication with the second outlet of the third three-way valve T3, the inlet of the first three-way valve T1 is in communication with the second outlet of the first three-way valve T1, the first communication port of the four-way valve F is in communication with the second communication port, the third communication port of the four-way valve F is in communication with the fourth communication port, and the inlet of the fourth three-way valve T4 is in communication with the second outlet of the fourth three-way valve T4.

[0122] When the seat and the battery need to be refrigerated at the same time, since the temperature rising rate of the motor is higher than that of the battery, the motor also needs to be cooled. The third water pump P3 drives the low-temperature heat transfer medium to the motor to exchange heat with the motor, and the motor conducts heat to the heat transfer medium, so that the temperature of the heat transfer medium rises, achieving the purpose of cooling the motor. The heat transfer medium carrying heat is continuously driven by the third water pump P3, reaches the radiator through the fourth three-way valve T4 for heat dissipation, and re-obtains heat transfer medium with lower temperature. In the refrigerant circuit, the main circuit is connected with the third branch and the fourth branch, respectively, and the liquid refrigerant medium driven by the air compressor C is partially evaporated in the evaporator to achieve seat refrigeration, and partially absorbs heat in the battery pack in the first heat exchanger E1 to achieve battery refrigeration. The gaseous refrigerant medium after absorbing heat enters the air compressor C again to realize circulation.

[0123] The circulation path of the refrigerant circuit is: air compressor C-second heat medium branch (second heat exchanger E2)-dryer bottle D-first switch valve S1 / second switch valve S2-evaporator / first refrigerant branch (first heat exchanger E1)-air compressor C.

[0124] 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.

[0125] Please refer to Figure 5 A structure schematic diagram of a battery-only heating operation mode provided for the embodiment of the application.

[0126] In the battery-only heating operation mode, the structure of the vehicle thermal management system is specifically set as: the inlet of the first three-way valve T1 is in communication with the second outlet of the first three-way valve T1, the first communication port of the four-way valve F is in communication with the fourth communication port of the four-way valve F, the second communication port of the four-way valve F is in communication with the third communication port of the four-way valve F, the inlet of the fourth three-way valve T4 is in communication with the first outlet, and the first outlet of the second three-way valve T2 is in communication with the second outlet of the second three-way valve T2.

[0127] When only the battery needs to be heated, the first heat exchanger E1 is not needed to heat the cabin, and the heat generated by the operation of the motor can be used to heat the battery, and the heat in the motor pipeline is transmitted to the battery pipeline by the heat-conducting medium through the third water pump P3, and after the heat is conducted to the battery to complete the heating, it returns to the third water pump P3.

[0128] Optionally, the third water pump P3 and the first water pump P1 can be started at the same time here to avoid the slow heating efficiency caused by the long pipeline path, and the heating efficiency can be improved through the driving of the same-direction double water pumps.

[0129] The circulation path of the motor for battery heating is: third water pump P3-third three-way valve T3 (motor heat dissipation place)-four-way valve F-first heat medium branch-first water pump P1 (battery heating place)-first three-way valve T1-four-way valve F-fourth three-way valve T4-third water pump P3.

[0130] Please refer to Figure 6 A structure schematic diagram of a cabin-only heating operation mode provided for the embodiment of the application.

[0131] In the only cabin heating mode, the structure of the whole vehicle thermal management system is set as: the inlet of the first three-way valve T1 is communicated with the first outlet of the first three-way valve T1, 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, the inlet of the second three-way valve T2 is communicated with 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 communicated with the second outlet of the third three-way valve T3, and the inlet of the fourth three-way valve T4 is communicated with the first outlet of the fourth three-way valve T4.

[0132] When the cabin is heated only by the heat generated by the motor, the heat generated by the battery after working for a period of time is sufficient to maintain the temperature of the battery, but the cabin still has heating demand, so the cabin can be heated by the heat generated by the motor. The heat generated by the motor is conducted to the heat transfer medium in the motor pipeline, the heat transfer medium with heat is driven by the third water pump P3, comes to the first heat medium branch of the first heat exchanger E1 through the four-way valve F, and conducts the heat to the refrigerant circuit. The refrigerant medium after obtaining heat conducts heat to the heating pipeline at the second heat exchanger E2 through the refrigerant circuit, and releases heat at the heater core. The heat transfer medium after heat conduction 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, and completes the circulation.

[0133] The circulation path of the motor for heating the cabin is: the third water pump P3-the third three-way valve T3-(the motor heat dissipation position)-the four-way valve F-the first branch-the second branch-the first three-way valve T1-the four-way valve F-the fourth three-way valve T4-the third water pump P3.

[0134] The circulation path of the refrigerant circuit has been explained in detail in the above embodiment, and will not be repeated here.

[0135] The circulation path of the heating pipeline is: the second water pump P2-the heater core-the second heat medium branch-the second three-way valve T2-the second water pump P2.

[0136] On this basis, when the heat generated by the motor during operation is sufficient to meet the heating demand of the cabin, the heat generated by the motor is excessive, and there is a heat dissipation demand. The radiator can be connected to the motor pipeline by adjusting the fourth three-way valve T4, so as to meet part of the heat dissipation demand of the motor. The specific adjustment of the fourth three-way valve T4 is that the inlet of the fourth three-way valve T4 is communicated with the second outlet of the fourth three-way valve T4.

[0137] At this time, the circulation path of the motor for heating the cabin and the motor heat dissipation is: the third water pump P3-the third three-way valve T3-(the motor heat dissipation position)-the four-way valve F-the first branch-the second branch-the first three-way valve T1-the four-way valve F-the fourth three-way valve T4-the radiator-the third water pump P3.

[0138] Please refer to Figure 7 A structure schematic diagram of a seat cabin and battery simultaneous heating working mode provided for the embodiment of the application.

[0139] In the seat cabin and battery simultaneous heating working mode by the heater, the structure of the whole vehicle thermal management system is specifically provided as follows: the inlet of the first three-way valve T1 is in communication with the second outlet of the first three-way valve T1, the first communication port of the four-way valve F is in communication with the second communication 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 in communication with the second outlet of the second three-way valve T2.

[0140] When the automobile is just started or the ambient temperature is low, the motor heat is low, and the seat cabin and the battery have heating requirements, the heater can be used to realize the simultaneous heating of the battery and the seat cabin. The heater is arranged 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 position and the first heat medium branch. The heat transfer medium releases part of the heat to heat the battery at the battery heating position, and at the same time, part of the heat is conducted to the first heat medium branch at the first heat medium branch, and the heat is transferred to the heater core at the second heat exchanger E2 to release, thereby realizing the simultaneous heating of the seat cabin and the battery.

[0141] The circulation path of the battery heating part is: the first water pump P1-battery heating position-the first three-way valve T1-the four-way valve F-the heater-the first heat medium branch-the first water pump P1.

[0142] The circulation path of the coolant circuit and the heating pipeline has been explained in detail in the above embodiment, and will not be repeated here.

[0143] Please refer to Figure 8 A structure schematic diagram of another seat cabin and battery simultaneous heating working mode provided for the embodiment of the application.

[0144] In the seat cabin and battery simultaneous heating working mode by the heat generated by the motor during operation, the structure of the whole vehicle thermal management system is specifically provided as follows: the inlet of the first three-way valve T1 is in communication with the second outlet of the first three-way valve T1. The first communication port of the four-way valve F is in communication with the fourth communication port of the four-way valve F, and the second communication port of the four-way valve F is in communication with the third communication port of the four-way valve F. The first switch valve S1 is closed, and the second switch valve S2 is turned on. The inlet of the second three-way valve T2 is in communication with the first outlet of the second three-way valve T2. The first outlet of the third three-way valve T3 is in communication with the second outlet of the third three-way valve T3. The inlet of the fourth three-way valve T4 is in communication with the second outlet of the fourth three-way valve T4.

[0145] When the motor is heating the cabin and the battery at the same time, i.e. the motor has heat dissipation demand, the heat generated by the motor in the working process is conducted to the heat transfer medium in the motor pipeline, the third water pump P3 drives the heat transfer medium with heat to the first heat medium pipeline through the four-way valve F, the heat is conducted to the refrigerant circuit through the first heat exchanger E1, the heat is transmitted to the heat medium in the heating pipeline through the second heat exchanger E2, and the heat medium with heat is driven to the heating core by the second water pump P2 to heat the cabin. 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 after providing heat for the cabin and the battery can release excess heat at the radiator.

[0146] The circulation path of the motor heating the battery and the circulation path of the motor heating the cabin have been explained in detail in the above embodiment, and will not be repeated here.

[0147] Please refer to Figure 9 A structure diagram of a motor heat dissipation and cabin heating working mode provided for the embodiment of the application.

[0148] In the motor heat dissipation and cabin heating working mode, the battery has heating and refrigeration, and the structures in the vehicle thermal management system are the same except the four-way valve F. The same parts are as follows: the inlet of the first three-way valve T1 is in communication with the second outlet of the first three-way valve T1. The first outlet of the second three-way valve T2 is in communication with the second outlet of the second three-way valve T2. The inlet of the fourth three-way valve T4 is in communication with the second outlet of the fourth three-way valve T4.

[0149] The different settings in the battery heating case are as follows: the first communication port of the four-way valve F is in communication with the fourth communication port of the four-way valve F, and the second communication port of the four-way valve F is in communication with the third communication port of the four-way valve F.

[0150] The different settings in the battery refrigeration case are as follows: the first communication port of the four-way valve F is in communication with the second communication port of the four-way valve F, and the third communication port of the four-way valve F is in communication with the fourth communication port of the four-way valve F.

[0151] In the working condition of motor heat dissipation and battery heat dissipation, the motor pipeline and the battery pipeline form a loop at the same time, and heat dissipation is performed through the radiator; in the case of motor heat dissipation and battery heating, the heat generated by the motor in the working process is high, and the remaining heat is dissipated through the radiator after the battery is heated. Therefore, the structures of the vehicle thermal management systems in the two motor heat dissipation cases are 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.

[0152] The heat dissipation of the motor, the heating of the battery, the refrigeration of the battery, the circulation path of the refrigerant circuit and the heating pipeline have been explained in detail in the above embodiments, and will not be repeated here.

[0153] Please refer to Figure 10 A structure schematic diagram of a dehumidification working mode provided for the embodiments of the present application.

[0154] In the dehumidification working mode, the heat generated by the motor and the battery can be used for heating and dehumidification of the cabin. At this time, the structure of the whole vehicle thermal management system is specifically provided as follows: the inlet of the first three-way valve T1 is in communication with the second outlet of the first three-way valve T1. The first communication port of the four-way valve F is in communication with the fourth communication port of the four-way valve F, and the second communication port of the four-way valve F is in communication with the third communication 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 in communication with the first outlet of the second three-way valve T2. The first outlet of the third three-way valve T3 is in communication with the second outlet of the third three-way valve T3. The inlet of the fourth three-way valve T4 is in communication with the second outlet of the fourth three-way valve T4.

[0155] The motor and the battery are cooled through the motor pipeline and the battery pipeline via the radiator. At the same time, part of the heat in the motor is conducted to the refrigerant circuit through the first heat exchanger E1. The heat of the evaporator and the first refrigerant branch is driven to the second heat exchanger E2 by the compressor C. The heat is conducted to the heating pipeline and released at the heater core, thereby completing the heating and dehumidification of the cabin.

[0156] The circulation path of the heating pipeline, the refrigerant circuit, the motor and the battery cooling at the same time has been explained in detail in the above embodiments, and will not be repeated here.

[0157] In the above embodiments, the description of each embodiment has its own emphasis. The parts not described in detail in a certain embodiment can be referred to the related description of other embodiments.

[0158] The above are only exemplary embodiments of the present disclosure, and cannot limit the scope of the present disclosure. That is, any equivalent changes and modifications made in accordance with the teachings of the present disclosure are still within the scope of the present disclosure. Other embodiments of the present disclosure will be readily apparent to those skilled in the art upon considering the specification and practicing the true principles of the disclosure. The present application is intended to cover any variations, uses or adaptive changes of the present disclosure that follow the general principles of the present disclosure and include common knowledge or conventional technical means in the technical field not recorded in the present disclosure.

Claims

1. A vehicle thermal management system, characterized by, 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 group and a first communication pipeline, the first heat exchanger comprises 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 arranged in the first communication pipeline respectively, and the first communication pipeline is in communication with the battery pipeline and the motor pipeline respectively; The first control valve group is used for connecting the battery pipeline and / or the motor pipeline and the first heat medium branch into a loop to heat the cabin by using the heat generated in the battery and / or the motor working process; The cabin pipeline comprises a refrigerant loop and a heating pipeline, the refrigerant loop comprises a main pipeline, a third branch and a fourth branch, and the third branch and the fourth branch are connected into a loop with the main pipeline respectively; The system further comprises a compressor, an evaporator and a second control valve group, the compressor is arranged in the main pipeline respectively, the evaporator is arranged in the third branch, the first refrigerant branch is arranged in the fourth branch, and the second control valve group is arranged in the third branch and the fourth branch simultaneously; The system further comprises a heater core and a third control assembly, the third control assembly comprises a second heat exchanger, a third control valve group and a second communication pipeline, the second heat exchanger comprises a second refrigerant branch and a second heat medium branch for heat exchange, the second heat medium branch is arranged in the main pipeline, the second refrigerant branch and the third control valve group are arranged in the second communication pipeline respectively, the second communication pipeline is in communication with the heating pipeline, and the heater core is arranged in the heating pipeline; When the cabin is heated, the second control valve group connects the fourth branch and the main pipeline into a loop, the compressor is started, and the third control valve group connects the heating pipeline and the second refrigerant branch into a loop; When the cabin is refrigerated, the second control valve group connects the third branch and the main pipeline into a loop, and the compressor is started.

2. The vehicle thermal management system of claim 1, wherein, The first control valve group comprises a four-way valve and a first three-way valve, the first communication pipeline comprises a first branch and a second branch, the first heat medium branch is arranged in the first branch, a first end of the first branch, a first end of the second branch and a first end of the battery pipeline are in communication, a second end of the first branch is in communication with a first communication port of the four-way valve, a second end of the second branch is in communication with a first outlet of the first three-way valve, a second end of the battery pipeline is in communication with a second outlet of the first three-way valve, a second communication port of the four-way valve is in communication with an inlet of the first three-way valve, and a third communication port and a fourth communication port of the four-way valve are in communication with two ends of the motor pipeline respectively; When the cabin is heated only by using the heat generated in the motor working process, the first communication port of the four-way valve is in communication with the fourth communication port of the four-way valve, the second communication port of the four-way valve is in communication with the third communication port of the four-way valve, and the inlet of the first three-way valve is in communication with the first outlet of the first three-way valve. When the cabin is heated by the heat generated during the operation of the motor and the battery, 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 second outlet of the first three-way valve.

3. The whole vehicle thermal management system according to claim 2, wherein, When the battery is heated 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 second outlet of the first three-way valve.

4. The vehicle thermal management system of claim 3, wherein, The first control assembly further comprises a heater, which is arranged 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 is communicated with the first 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 demand of the battery, the inlet of the first three-way valve is communicated with 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 demand of the cabin and the battery, the inlet of the first three-way valve is communicated with the second outlet of the first three-way valve, and the heater is started.

5. The vehicle thermal management system of claim 1, wherein, The second control valve group comprises a first on-off valve and a second on-off valve, the first on-off valve is arranged in the third branch, and the second on-off valve is arranged in the fourth branch; When the cabin is refrigerated and / or dehumidified, the first on-off valve is opened to form a loop of the third branch and the main line; When the cabin is heated and / or the battery is refrigerated, the second on-off valve is opened to form a loop of the fourth branch and the main line.

6. The vehicle thermal management system of claim 1, wherein, The cabin pipeline further comprises a heat dissipation pipeline, the system further comprises a heat dissipator, and the second communication pipeline is further communicated with the heat dissipation pipeline, and the heat dissipator is arranged in the heat dissipation pipeline; When the cabin is refrigerated, the third control valve group forms a loop of the heat dissipation pipeline and the second refrigerant branch.

7. The vehicle thermal management system of claim 6, wherein, The third control valve group comprises a second three-way valve, the second communication pipeline comprises a fifth branch, a first end of the heat dissipation pipeline, a first end of the fifth branch and a first end of the heating pipeline are communicated, the second refrigerant branch is arranged in the fifth branch, a second end of the fifth branch is communicated with the inlet of the second three-way valve, a first outlet of the second three-way valve is communicated with a second end of the heating pipeline, and a second outlet of the second three-way valve is communicated with a second end of the heat dissipation pipeline; When the cabin is refrigerated and / or the battery is refrigerated, the inlet of the second three-way valve is communicated with 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.

8. The vehicle thermal management system of claim 7, wherein, The third control valve group further comprises a third three-way valve and a fourth three-way valve, and the second communication pipeline further comprises 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, 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 the cabin and / or the battery is cooled, the inlet of the third three-way valve is communicated with the second outlet of the second three-way valve; When only the motor and / or the battery is cooled, 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 is heated by using the heat generated during the operation of the motor, the first outlet 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 first outlet of the fourth three-way valve.

9. A vehicle characterized by comprising: The whole vehicle thermal management system comprises the whole vehicle thermal management system according to any one of claims 1-8. The whole vehicle thermal management system comprises the whole vehicle thermal management system according to any one of claims 1-8.

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