Thermal management system of vehicle and vehicle

Abstract

The invention provides a thermal management system of a vehicle and the vehicle, the system comprises a parking heating loop, the parking heating loop comprises a first water pump, a four-way solenoid valve, a thermal management device and a parking heater; in the parking heating loop, the first end of a first water pump communicates with the second end of the first water pump through a parking heater, a heat management device and a four-way electromagnetic valve. The parking heating circuit is used for heating at least one component of a battery, an electric machine, an engine and a passenger compartment of the vehicle. The system can heat a vehicle-mounted battery or an engine by adopting a parking heating loop when a vehicle is in a low-temperature state for a long time in a cold or even extremely cold area, so that normal starting of a battery pack and the engine is ensured, and the problem of poor battery endurance caused by high-voltage electric heating on the battery when the battery and the engine are started in a low-temperature environment is solved.

Description

Technical Field

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

[0002] The current automotive industry is committed to researching ways to reduce vehicle energy consumption to adapt to the increasingly severe energy crisis, including the development of new energy vehicles and new heating technologies, but these are often costly.

[0003] When the vehicle is driven in winter, the battery's range reduction has always troubled the OEMs. The low-temperature insulation of the battery, the heating of the battery, the heating of the passenger compartment, and the low-temperature starting of the engine increase the vehicle's energy consumption. Therefore, it is necessary to improve the energy utilization of the battery and the passenger compartment heating so that the vehicle has a longer range with the same amount of electricity and fuel, making it more competitive. Especially for hybrid electric vehicles in cold and extremely cold areas, battery insulation, battery heating, passenger compartment heating needs and engine cold start are more valued. Low-temperature engine starting and battery insulation rely on high-voltage battery packs to be heated at high voltage multiple times to maintain the battery pack temperature to ensure that the engine can start normally. A large amount of electricity is consumed in severe cold weather. If the user is in a low-temperature state for a long time, the vehicle will be out of power and cannot be used normally. Even if the vehicle is fully fueled, it still cannot be used normally and can only be started after plugging in a gun for charging, causing user complaints. Vehicle air conditioning heating in low-temperature environments is completed by engine coolant heating and air conditioning electric heater PTC (Positive Temperature Coefficient) heating. Extra electrical energy is consumed when heating the medium and converting electrical energy into heat energy. Extra electrical energy is consumed to ensure the comfort of the passenger compartment after the vehicle is in a low-temperature state for a long time in severe cold seasons. Summary of the invention

[0004] The present application provides a vehicle thermal management system and a vehicle to solve the problem of poor battery life caused by the need to consume extra electric energy for heating when starting the battery and engine in a low-temperature environment.

[0005] In a first aspect, the present application provides a thermal management system for a vehicle, comprising: a parking heating circuit;

[0006] The parking heating circuit includes a first water pump, a four-way solenoid valve, a thermal management device and a parking heater; wherein the parking heater is connected to the fuel system of the vehicle and generates heat by burning fuel;

[0007] In the parking heating circuit, the first end of the first water pump is connected to the second end of the first water pump through the parking heater, the thermal management device, and the four-way solenoid valve;

[0008] The parking heating circuit is used to heat at least one component among a battery, a motor, an engine and a passenger compartment of the vehicle.

[0009] In a possible implementation, the parking heating circuit further includes a device to be heated and a water pump for the device to be heated; the thermal management device includes a plate heat exchanger and a refrigerant heat exchanger;

[0010] In the parking heating circuit, the first end of the first water pump is communicated with the first end of the parking heater, the second end of the parking heater is communicated with the fourth port of the four-way solenoid valve, the first port of the four-way solenoid valve is connected to the low-temperature side inlet of the plate heat exchanger, the low-temperature side outlet of the plate heat exchanger is communicated with the water side inlet of the refrigerant heat exchanger, the water side outlet of the refrigerant heat exchanger is communicated with the inlet of the water pump of the device to be heated, the outlet of the water pump of the device to be heated is communicated with the third port of the four-way solenoid valve through the device to be heated, and the second port of the four-way solenoid valve is communicated with the second end of the first water pump.

[0011] In a possible implementation, the device to be heated includes a battery and / or a motor system.

[0012] In one possible implementation, the thermal management device includes a plate heat exchanger;

[0013] In the parking heating circuit, the first end of the first water pump is communicated with the first end of the parking heater, the second end of the parking heater is communicated with the high-temperature side inlet of the plate heat exchanger, the high-temperature side outlet of the plate heat exchanger is communicated with the fourth port of the four-way solenoid valve, and the second port of the four-way solenoid valve is communicated with the second end of the first water pump.

[0014] In one possible embodiment, the parking heating circuit is used to heat the passenger compartment;

[0015] The parking heating circuit also includes a second water pump; the thermal management device includes a PTC heater and a heater core;

[0016] In the parking heating circuit, the first water pump is connected to the second end of the first water pump in sequence through the parking heater, the second water pump, the PTC heater, the heater core, the fourth port and the second port of the four-way solenoid valve.

[0017] In one possible embodiment, the parking heating circuit is used to heat the passenger compartment and the engine;

[0018] The parking heating circuit further includes a third water pump, the engine and a second water pump; the thermal management device further includes a PTC heater and a heater core;

[0019] In the parking heating circuit, the first water pump is connected to the second end of the first water pump through the parking heater, the third water pump, the circulating fluid pipeline of the engine, the second water pump, the PTC heater, the heater core, the fourth port and the second port of the four-way solenoid valve in sequence.

[0020] In a possible implementation manner, the parking heating circuit is used to heat the passenger compartment and the device to be heated;

[0021] The parking heating circuit also includes a water pump for the device to be heated, the device to be heated and a second water pump; the thermal management device includes a PTC heater, a heater core, a plate heat exchanger and a refrigerant heat exchanger;

[0022] In the parking heating circuit, the first water pump is connected to the second end of the first water pump via the parking heater, the second water pump, the PTC heater, the heater core, the fourth port and the first port of the four-way solenoid valve, the low-temperature side of the plate heat exchanger, the water side of the refrigerant heat exchanger, the water pump of the device to be heated, the device to be heated, the third port and the second port of the four-way solenoid valve in sequence.

[0023] In a possible implementation, the parking heating circuit is used to heat the engine, the passenger compartment and the components to be heated;

[0024] The parking heating circuit also includes a third water pump, a second water pump, a water pump for the device to be heated, and a device to be heated; the thermal management device includes a PTC heater, a heater core, a plate heat exchanger, and a refrigerant heat exchanger;

[0025] In the parking heating circuit, the first water pump is connected to the second end of the first water pump via the parking heater, the third water pump, the circulating fluid pipeline in the engine, the second water pump, the PTC heater, the heater core, the fourth port and the first port of the four-way solenoid valve, the low-temperature side of the plate heat exchanger, the water side of the refrigerant heat exchanger, the water pump of the device to be heated, the circulating fluid pipeline in the device to be heated, the third port and the second port of the four-way solenoid valve in sequence.

[0026] In a possible implementation, the device to be heated includes a battery and / or a motor system.

[0027] In a possible implementation, the system further comprises a first heating circuit; the first heating circuit is used to heat the passenger compartment and the engine;

[0028] The first heating circuit includes a second water pump, a PTC heater, a heater core, the four-way solenoid valve, the first water pump, the parking heater, a third water pump and an engine;

[0029] In the first heating circuit, the outlet of the second water pump is connected to the inlet of the second water pump through the PTC heater, the heater core, the fourth port and the second port of the four-way solenoid valve, the first water pump, the parking heater, the third water pump and the circulating fluid pipeline in the engine in sequence.

[0030] In a possible implementation, the system further includes a second heating circuit and an EGR waste heat recovery circuit;

[0031] The second heating circuit includes a third water pump, an engine, a second water pump, a PTC heater, a heater core and a plate heat exchanger;

[0032] In the second heating circuit, the outlet of the third water pump is connected to the inlet of the third water pump through the circulating fluid pipeline of the engine, the second water pump, the PTC heater, the heater core and the plate heat exchanger in sequence;

[0033] When the second heating circuit is working, the third water pump, the engine, the second water pump, the PTC heater, the heater core and the plate heat exchanger are all working;

[0034] The EGR waste heat recovery loop includes a third water pump, an exhaust gas recirculation system and a turbocharger;

[0035] In the EGR waste heat recovery circuit, after the first end of the third water pump is connected to the engine, it is connected to the second end of the third water pump through the exhaust gas recirculation system and the turbocharger respectively.

[0036] In a second aspect, the present application provides a vehicle, comprising the vehicle thermal management system described in any one of the first aspects above.

[0037] The embodiment of the present application provides a thermal management system for a vehicle, which includes a parking heating circuit, the parking heating circuit includes a first water pump, a four-way solenoid valve, a thermal management device and a parking heater; in the parking heating circuit, the first end of the first water pump is connected to the second end of the first water pump through the parking heater, the thermal management device and the four-way solenoid valve; the parking heating circuit is used to heat the battery, motor, engine and at least one component in the passenger compartment of the vehicle. When the vehicle is in a low temperature state for a long time in cold or even extremely cold areas, the system can use the parking heating circuit to heat the vehicle battery or engine to ensure the normal start of the battery pack and the engine, and avoid the problem of poor battery life caused by frequent high-voltage electric heating of the battery and the engine when the battery and engine are started in a low temperature environment. BRIEF DESCRIPTION OF THE DRAWINGS

[0038] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative labor.

[0039] Figure 1 is a schematic diagram of the structure of a thermal management system for a vehicle provided in an embodiment of the present application;

[0040] Figure 2 It is a schematic diagram of the specific structure of the thermal management system of a vehicle provided in an embodiment of the present application. DETAILED DESCRIPTION

[0041] In the following description, specific details such as specific system structures, technologies, etc. are provided for the purpose of illustration rather than limitation, so as to provide a thorough understanding of the embodiments of the present application. However, it should be clear to those skilled in the art that the present application may also be implemented in other embodiments without these specific details. In other cases, detailed descriptions of well-known systems, devices, circuits, and methods are omitted to prevent unnecessary details from obstructing the description of the present application.

[0042] In order to make the purpose, technical solutions and advantages of the present application clearer, specific embodiments will be described below in conjunction with the accompanying drawings.

[0043] Figure 1 This is a schematic diagram of the structure of the thermal management system of a vehicle provided in an embodiment of the present application. Figure 1 As shown, the thermal management system of the vehicle includes: a parking heating circuit;

[0044] The parking heating circuit includes a first water pump 13, a four-way solenoid valve 34, a thermal management device and a parking heater 14;

[0045] In the parking heating circuit, the first end of the first water pump 13 is connected to the second end of the first water pump 13 through the parking heater 14, the thermal management device, and the four-way solenoid valve 34;

[0046] The parking heating circuit is used to heat at least one component among the battery 11 , the motor, the engine 20 and the passenger compartment of the vehicle.

[0047] In this embodiment, the parking heating circuit includes a first parking heating circuit, which is a basic heating circuit. The first parking heating circuit is combined with heating circuits of other devices to be heated, and the devices to be heated can be heated by the parking heater 14 .

[0048] In a possible implementation, Figure 1As shown, the thermal management device includes a plate heat exchanger 12;

[0049] In the first parking heating circuit, the first end of the first water pump 13 is connected to the first end of the parking heater 14, the second end of the parking heater 14 is connected to the high-temperature side inlet of the plate heat exchanger, the high-temperature side outlet of the plate heat exchanger 12 is connected to the fourth port of the four-way solenoid valve 34, and the second port of the four-way solenoid valve 34 is connected to the second end of the first water pump 13.

[0050] Specifically, the first parking heating circuit further includes a first three-way pipe 53 and a first three-way proportional valve 51 .

[0051] like Figure 1 As shown, in the first parking heating circuit, the first end of the first water pump 13 is connected to the first end of the parking heater 14, the second end of the parking heater 14 is connected to the high-temperature side inlet of the plate heat exchanger 12 through the first three-way pipe 53, the high-temperature side outlet of the plate heat exchanger 12 is connected to the third port of the first three-way proportional valve 51, the second port of the first three-way proportional valve 51 is connected to the fourth port of the four-way solenoid valve 34, and the second port of the four-way solenoid valve 34 is connected to the second end of the first water pump 13.

[0052] It can be seen from the above embodiments that the system can use the parking heating circuit to heat the vehicle battery 11 or the engine 20 when the vehicle is refrigerated for a long time in cold or even extremely cold areas, so as to ensure the normal starting of the battery pack and the engine 20, and avoid the problem of poor battery life caused by high-voltage electric heating on the battery 11 when the battery 11 and the engine 20 are started in a low temperature environment.

[0053] In a possible implementation, Figure 2 As shown, the parking heating circuit further includes a device to be heated and a water pump for the device to be heated; the thermal management device includes a plate heat exchanger 12 and a refrigerant heat exchanger 13;

[0054] In the parking heating circuit, the first end of the first water pump 13 is communicated with the first end of the parking heater 14, the second end of the parking heater 14 is communicated with the fourth port of the four-way solenoid valve 34, the first port of the four-way solenoid valve 34 is connected to the low-temperature side inlet of the plate heat exchanger 12, the low-temperature side outlet of the plate heat exchanger 12 is communicated with the water side inlet of the refrigerant heat exchanger 13, the water side outlet of the refrigerant heat exchanger 13 is communicated with the inlet of the water pump of the device to be heated, the outlet of the water pump of the device to be heated is communicated with the third port of the four-way solenoid valve 34 through the device to be heated, and the second port of the four-way solenoid valve 34 is communicated with the second end of the first water pump 13.

[0055] In this embodiment, when the device to be heated is a battery 11, the water pump of the device to be heated is a battery water pump 10. The parking heating circuit is specifically a second parking heating circuit, and the second parking heating circuit further includes a first three-way pipe 53, a second three-way pipe 54, a second three-way proportional valve 52, a first three-way proportional valve 51, a fourth three-way pipe 30, a fifth three-way pipe 29, a first one-way valve 31 and a sixth three-way pipe 33.

[0056] When the second parking heating circuit heats the battery 11, the first end of the first water pump 13 is connected to the first end of the parking heater 14, the second end of the parking heater 14 is connected to the port 2 of the second three-way proportional valve 52 through the first three-way pipe 53 and the second three-way pipe 54 in sequence, the port 3 of the second three-way proportional valve 52 is connected to the port 1 of the first three-way proportional valve 51, the port 2 of the first three-way proportional valve 51 is connected to the fourth port of the four-way solenoid valve 34, and the port 1 of the four-way solenoid valve 34 is connected to the low The warm side inlet is connected, the low temperature side outlet of the plate heat exchanger 12 is connected to the water side of the refrigerant heat exchanger 13, the water side outlet of the refrigerant heat exchanger 13 is connected to the inlet of the battery water pump 10 through the fourth three-way pipe 30 and the fifth three-way pipe 29 in sequence, the outlet of the battery water pump 10 is connected to the circulating liquid pipeline of the battery 11, the circulating liquid pipeline of the battery 11 is connected to the third port of the four-way solenoid valve 34 through the first one-way valve 31 and the sixth three-way pipe 33, and the second port of the four-way solenoid valve 34 is connected to the second end of the first water pump 13.

[0057] When the second parking heating circuit is working, the first water pump 13, the parking heater 14, the plate heat exchanger 12 and the refrigerant heat exchanger 13 are all working, the battery 11 may not work, the second port and the third port of the second three-way proportional valve 52 are connected; the port 1 and the port 2 of the first three-way proportional valve 51 are connected; the port 1 and the port 4 of the four-way solenoid valve 34 are connected, and the port 2 and the port 3 are connected. The parking heating circuit can directly heat the battery 11 through the parking heater 14.

[0058] When the device to be heated is a motor, the water pump of the device to be heated is the motor water pump 5, and the parking heating circuit is specifically the third parking heating circuit. When the third parking heating circuit heats the motor, the first end of the first water pump 13 is connected to the first end of the parking heater 14, and the second end of the parking heater 14 is connected to the port 2 of the second three-way proportional valve 52 through the first three-way pipe 53 and the second three-way pipe 54 in sequence, and the port 3 of the second three-way proportional valve 52 is connected to the port 1 of the first three-way proportional valve 51, and the port 2 of the first three-way proportional valve 51 is connected to the fourth port of the four-way solenoid valve 34, and the port 1 of the four-way solenoid valve 34 is connected to the low-temperature side inlet of the plate heat exchanger 12, and the plate heat exchanger 1 The low-temperature side outlet of 2 is connected to the water side of the refrigerant heat exchanger 13, and the water side outlet of the refrigerant heat exchanger 13 is connected to the inlet of the motor water pump 5 through the fourth three-way pipe 30, the fifth three-way pipe 29, and the eighth three-way pipe 28 in sequence. The outlet of the motor water pump 5 is connected to the circulating fluid pipeline of the motor, and the outlet of the circulating fluid pipeline of the motor is connected to one end of the oil cooler. The other end of the oil cooler is connected to the third port of the four-way solenoid valve 34 through the second three-way solenoid valve 32 and the sixth three-way pipe 33. The second port of the four-way solenoid valve 34 is connected to the second end of the first water pump 13.

[0059] When the third parking heating circuit is working, the first water pump 13, the parking heater 14, the plate heat exchanger 12 and the refrigerant heat exchanger 13 are all working, the second port and the third port of the second three-way proportional valve 52 are connected; the port 1 and the port 2 of the first three-way proportional valve 51 are connected; the port 1 and the port 4 of the four-way solenoid valve 34 are connected, and the port 2 and the port 3 are connected. The third parking heating circuit can directly heat the motor through the parking heater 14.

[0060] In a possible implementation manner, the device to be heated includes a battery 11 and / or a motor system.

[0061] In this embodiment, the second parking heating circuit and the third parking heating circuit may work simultaneously or individually.

[0062] In a possible implementation, Figure 2 As shown, the system further includes a battery heating circuit;

[0063] The battery heating circuit includes a battery 11, a battery water pump 10, the plate heat exchanger 12, the four-way solenoid valve 34 and a refrigerant heat exchanger 13;

[0064] In the battery heating circuit, the outlet of the battery water pump 10 is connected to the circulating liquid pipeline of the battery 11, and the circulating liquid pipeline of the battery 11 is connected to the low-temperature side of the plate heat exchanger 12 through the third port and the first port of the four-way solenoid valve 34, and the low-temperature side of the plate heat exchanger 12 is connected to the water side of the refrigerant heat exchanger 13, and the water side of the refrigerant heat exchanger 13 is connected to the inlet of the battery water pump 10.

[0065] In this embodiment, when the battery heating circuit is working, the battery heating circuit and Figure 1 The first parking heating circuit in the parking heater 14 works at the same time, realizing the function of the parking heater 14 heating the battery 11.

[0066] Specifically, the battery heating circuit further includes a first one-way valve 31 , a sixth three-way pipe 33 , a fourth three-way pipe 30 and a fifth three-way pipe 29 .

[0067] In the battery heating circuit, the outlet of the battery water pump 10 is connected to the circulating liquid pipeline of the battery 11, and the circulating liquid pipeline of the battery 11 is connected to the third port of the four-way solenoid valve 34 through the first one-way valve 31 and the sixth three-way pipe 33. The first port of the four-way solenoid valve 34 is connected to the low-temperature side inlet of the plate heat exchanger 12, and the low-temperature side outlet of the plate heat exchanger 12 is connected to the water side inlet of the refrigerant heat exchanger 13. The water side outlet of the refrigerant heat exchanger 13 is connected to the inlet of the battery water pump 10 through the fourth three-way pipe 30 and the fifth three-way pipe 29 in sequence.

[0068] When the battery heating circuit and the first parking heating circuit work simultaneously, the first water pump 13, the parking heater 14, the plate heat exchanger 12, the battery water pump 10 and the refrigerant heat exchanger 13 all work, and the port 2 and the port 3 of the first three-way proportional valve 51 are connected; the port 2 and the port 4 of the four-way solenoid valve 34 are connected, and the port 1 and the port 3 are connected; so as to realize the function of the parking heater 14 heating the battery 11.

[0069] In a possible implementation, Figure 2 As shown, the system also includes a motor heating circuit;

[0070] The motor heating circuit includes a motor system, a motor water pump 5, an oil cooler 7, the four-way solenoid valve 34, the plate heat exchanger 12 and a refrigerant heat exchanger 13;

[0071] In the motor heating circuit, the outlet of the motor water pump 5 is connected to the inlet of the motor water pump 5 through the circulating liquid pipeline in the motor system, the oil cooler 7, the third port and the first port of the four-way solenoid valve 34, the low-temperature side of the plate heat exchanger 12, and the water side of the refrigerant heat exchanger 13 in sequence.

[0072] In this embodiment, the motor heating circuit further includes a second three-way solenoid valve 32, a sixth three-way pipe 33, a fourth three-way pipe 30 and a fifth three-way pipe 29. In addition, the motor system includes a P4 MCU 27, a P4 motor 28, a motor 6, an OBC (On board charger), a PDU (Power Distribution Unit) & DC / DC and an oil cooler 7.

[0073] In the motor heating circuit, the outlet of the motor water pump 5 is connected to one end of the oil cooler 7 through the circulating liquid pipeline of the motor system, and the other end of the oil cooler 7 is connected to the port 3 of the second three-way solenoid valve 32. The port 1 of the second three-way solenoid valve 32 is connected to the port 3 of the four-way solenoid valve 34 through the sixth three-way pipe 33. The port 1 of the four-way solenoid valve 34 is connected to the low-temperature side inlet of the plate heat exchanger 12. The low-temperature side outlet of the plate heat exchanger 12 is connected to the water side inlet of the refrigerant heat exchanger 13. The water side outlet of the refrigerant heat exchanger 13 is connected to the inlet of the motor water pump 5 through the fourth three-way pipe 30, the fifth three-way pipe 29 and the eighth three-way pipe 28 in sequence.

[0074] When the motor heating circuit and the first parking heating circuit work simultaneously, the first water pump 13, the parking heater 14, the plate heat exchanger 12, the motor water pump 5 and the refrigerant heat exchanger 13 all work, and the port 2 and the port 3 of the first three-way proportional valve 51 are connected; the port 2 and the port 4 of the four-way solenoid valve 34 are connected, and the port 1 and the port 3 are connected; so as to realize the function of the parking heater 14 heating the motor, and realize the function of the parking heater 14 heating the motor.

[0075] In a possible implementation, Figure 2 As shown, the parking heating circuit is used to heat the passenger compartment;

[0076] The parking heating circuit further includes a second water pump 18; the thermal management device includes a PTC heater 17 and a heater core 15;

[0077] In the parking heating circuit, the first water pump 13 is connected to the second end of the first water pump 13 through the parking heater 14, the second water pump 18, the PTC heater 17, the heater core 15, the fourth port and the second port of the four-way solenoid valve 34 in sequence;

[0078] When the parking heating circuit heats the passenger compartment, the first water pump 13, the parking heater 14 and the heater core 15 work, and the second water pump 18 and the PTC heater 17 do not work, wherein the parking heater 14 is used to heat the coolant, and the heater core is used to dissipate heat to the vehicle interior.

[0079] Specifically, when the external ambient temperature is too low and the vehicle passenger compartment needs to be heated up quickly, the first water pump 13, the parking heater 14, the heater core 15, the second water pump 18 and the PTC heater 17 in the parking heating circuit can be controlled to operate.

[0080] In this embodiment, when the parking heating circuit heats the passenger compartment, the parking heating circuit also includes a first three-way pipe 53, a second three-way pipe 54, a first three-way solenoid valve 55, a third three-way pipe 49, a seventh three-way pipe 50, a third three-way solenoid valve 59, a ninth three-way pipe 43, a second three-way proportional valve 52 and a first three-way proportional valve 51.

[0081] When the parking heating circuit heats the passenger compartment, the first end of the first water pump 13 is connected to the first end of the parking heater 14, the second end of the parking heater 14 is connected to the port 1 of the first three-way solenoid valve 55 through the first three-way pipe 53 and the second three-way pipe 54 in sequence, the port 2 of the first three-way solenoid valve 55 is connected to the port 2 of the third three-way solenoid valve 59 through the third three-way pipe 49 and the seventh three-way pipe 50 in sequence, the port 3 of the third three-way solenoid valve 59 is connected to the inlet of the second water pump 18, the outlet of the second water pump 18 is connected to the inlet of the PTC heater 17, the outlet of the PTC heater 17 is connected to the heater core 15 through the ninth three-way pipe 43, the heater core 15 is connected to the port 1 of the second three-way proportional valve 52, the port 3 of the second three-way proportional valve 52 is connected to the port 1 of the first three-way proportional valve 51, the port 2 of the first three-way proportional valve 51 is connected to the fourth port of the four-way solenoid valve 34, and the second port of the four-way solenoid valve 34 is connected to the second end of the first water pump 13.

[0082] When the parking heating circuit heats the passenger compartment, the first water pump 13, the parking heater 14 and the heater core 15 are working, and the second water pump 18 and the PTC heater 17 are not working; port 1 and port 2 of the first three-way solenoid valve 55 are connected; port 2 and port 3 of the third three-way solenoid valve 59 are connected, port 1 and port 3 of the second three-way proportional valve 52 are connected, port 1 and port 2 of the first three-way proportional valve 51 are connected, and the second port and the fourth port of the four-way solenoid valve 34 are connected, thereby realizing the function of the parking heater 14 to heat the passenger compartment.

[0083] In a possible implementation, Figure 2 As shown, the parking heating circuit is used to heat the passenger compartment and the engine 20;

[0084] The parking heating circuit further includes a third water pump 21, the engine 20, a thermostat 19 and a second water pump 18; the thermal management device further includes a PTC heater 17 and a heater core 15;

[0085] In the parking heating circuit, the first water pump 13 is connected to the second end of the first water pump 13 through the parking heater 14, the third water pump 21, the circulating fluid pipeline of the engine 20, the thermostat 19, the second water pump 18, the PTC heater 17, the heater core 15, the fourth port and the second port of the four-way solenoid valve 34 in sequence;

[0086] When the parking heating circuit heats the passenger compartment and the engine 20 , the first water pump 13 , the parking heater 14 , the heater core 15 , the PTC heater 17 and the second water pump 18 are all in operation.

[0087] In this embodiment, when the parking heating circuit heats the passenger compartment and the engine 20, the parking heating circuit also includes a first three-way pipe 53, a second three-way pipe 54, a first three-way solenoid valve 55, a third three-way pipe 49, a seventh three-way pipe 50, a third three-way solenoid valve 59, a second three-way proportional valve 52 and a first three-way proportional valve 51.

[0088] When the parking heating circuit heats the passenger compartment and the engine 20, the first end of the first water pump 13 is connected to the first end of the parking heater 14, the second end of the parking heater 14 is connected to the port 1 of the first three-way solenoid valve 55 through the first three-way pipe 53 and the second three-way pipe 54 in sequence, the port 3 of the first three-way solenoid valve 55 is connected to the inlet of the third water pump 21, the outlet of the third water pump 21 is connected to the circulating fluid pipeline of the engine 20, the circulating fluid pipeline of the engine 20 is connected to the thermostat 19, and the thermostat 19 is connected to the third three-way solenoid valve 59 through the third three-way pipe 49 and the seventh three-way pipe 50 in sequence. The port 2 of the third three-way solenoid valve 59 is connected to the inlet of the second water pump 18, the outlet of the second water pump 18 is connected to the inlet of the PTC heater 17, the outlet of the PTC heater 17 is connected to the heater core 15 through the ninth three-way pipe 43, the heater core 15 is connected to the port 1 of the second three-way proportional valve 52, the port 3 of the second three-way proportional valve 52 is connected to the port 1 of the first three-way proportional valve 51, the port 2 of the first three-way proportional valve 51 is connected to the fourth port of the four-way solenoid valve 34, and the second port of the four-way solenoid valve 34 is connected to the second end of the first water pump 13.

[0089] When the parking heating circuit heats the passenger compartment and the engine 20, the parking heater 14, the first water pump 13, the heater core 15, the PTC heater 17 and the second water pump 18 all work to achieve the function of the parking heater 14 and the PTC heating the engine 20 and the passenger compartment; wherein the PTC heater 17 may not work, so that the parking heater 14 heats the engine 20 and the passenger compartment alone.

[0090] In a possible implementation, Figure 2As shown, the parking heating circuit is used to heat the passenger compartment and the components to be heated;

[0091] The parking heating circuit further includes a water pump for the device to be heated, the device to be heated and a second water pump 18; the thermal management device includes a PTC heater 17, a heater core 15, a plate heat exchanger 12 and a refrigerant heat exchanger 13;

[0092] In the parking heating circuit, the first water pump 13 is connected to the second end of the first water pump 13 through the parking heater 14, the second water pump 18, the PTC heater 17, the warm air core 15, the fourth port and the first port of the four-way solenoid valve 34, the low temperature side of the plate heat exchanger 12, the water side of the refrigerant heat exchanger 13, the water pump of the device to be heated, the device to be heated, the third port and the second port of the four-way solenoid valve 34 in sequence;

[0093] When the parking heating circuit heats the passenger compartment and the device to be heated, the first water pump 13 , the parking heater 14 , the second water pump 18 , the PTC heater 17 and the heater core 15 are all in operation.

[0094] When the device to be heated is a battery 11, the water pump of the device to be heated is a battery water pump 10, and the parking heating circuit also includes a first three-way pipe 53, a second three-way pipe 54, a first three-way solenoid valve 55, a third three-way pipe 49, a seventh three-way pipe 50, a third three-way solenoid valve 59, a second three-way proportional valve 52, a first three-way proportional valve 51, a fifth three-way pipe 29, a first one-way valve 31 and a sixth three-way pipe 33.

[0095] When the parking heating circuit heats the battery 11 and the passenger compartment, the first end of the first water pump 13 is connected to the first end of the parking heater 14, the first end of the first water pump 13 is connected to the port 1 of the first three-way solenoid valve 55 through the first three-way pipe 53 and the second three-way pipe 54 in sequence, the port 2 of the first three-way solenoid valve 55 is connected to the port 2 of the third three-way solenoid valve 59 through the third three-way pipe 49 and the seventh three-way pipe 50 in sequence, the port 3 of the third three-way solenoid valve 59 is connected to the inlet of the second water pump 18, the outlet of the second water pump 18 is connected to the inlet of the PTC heater 17, the outlet of the PTC heater 17 is connected to the heater core 15 through the ninth three-way pipe 43, the heater core 15 is connected to the port 1 of the second three-way proportional valve 52, and the Port 3 of the three-way proportional valve 52 is connected to port 1 of the first three-way proportional valve 51, port 2 of the first three-way proportional valve 51 is connected to the fourth port of the four-way solenoid valve 34, port 1 of the four-way solenoid valve 34 is connected to the low-temperature side inlet of the plate heat exchanger 12, the low-temperature side outlet of the plate heat exchanger 12 is connected to the water side inlet of the refrigerant heat exchanger 13, the water side outlet of the refrigerant heat exchanger 13 is connected to the battery water pump 10 through the fourth three-way pipe 30 and the fifth three-way pipe 29 in sequence, the battery water pump 10 is connected to the circulating fluid pipeline of the battery 11, the circulating fluid pipeline of the battery 11 is connected to port 3 of the four-way solenoid valve 34 through the first one-way valve 31 and the sixth three-way pipe 33 in sequence, and port 2 of the four-way solenoid valve 34 is connected to the second end of the first water pump 13.

[0096] When the parking heating circuit heats the battery 11 and the passenger compartment, the first water pump 13, the parking heater 14, the PTC heater 17, the second water pump 18, the warm air core 15, the plate heat exchanger 12, the refrigerant heat exchanger 13 and the battery water pump 10 all work, so that the parking heater 14 and the PTC heat the battery 11 and the passenger compartment. Among them, the PTC heater 17 may not work, so that the parking heater 14 heats the battery 11 and the passenger compartment alone.

[0097] When the device to be heated is a motor system, the water pump of the device to be heated is a motor water pump 5, and the parking heating circuit also includes a first three-way pipe 53, a second three-way pipe 54, a first three-way solenoid valve 55, a third three-way pipe 49, a seventh three-way pipe 50, a third three-way solenoid valve 59, a second three-way proportional valve 52, a first three-way proportional valve 51, a fifth three-way pipe 29, an eighth three-way pipe 28 and a sixth three-way pipe 33.

[0098] When the parking heating circuit heats the motor and the passenger compartment, the first end of the first water pump 13 is connected to the first end of the parking heater 14, the first end of the first water pump 13 is connected to the port 1 of the first three-way solenoid valve 55 through the first three-way pipe 53 and the second three-way pipe 54 in sequence, the port 2 of the first three-way solenoid valve 55 is connected to the port 2 of the third three-way solenoid valve 59 through the third three-way pipe 49 and the seventh three-way pipe 50 in sequence, the port 3 of the third three-way solenoid valve 59 is connected to the inlet of the second water pump 18, the outlet of the second water pump 18 is connected to the inlet of the PTC heater 17, the outlet of the PTC heater 17 is connected to the heater core 15 through the ninth three-way pipe 43, the heater core 15 is connected to the port 1 of the second three-way proportional valve 52, and the port 3 of the second three-way proportional valve 52 is connected to the Port 1 of the first three-way proportional valve 51 is connected, port 2 of the first three-way proportional valve 51 is connected to the fourth port of the four-way solenoid valve 34, port 1 of the four-way solenoid valve 34 is connected to the low-temperature side inlet of the plate heat exchanger 12, the low-temperature side outlet of the plate heat exchanger 12 is connected to the water side inlet of the refrigerant heat exchanger 13, the water side outlet of the refrigerant heat exchanger 13 is connected to the motor water pump 5 through the fourth three-way pipe 30, the fifth three-way pipe 29, and the eighth three-way pipe 28 in sequence, the motor water pump 5 is connected to the circulating fluid pipeline of the motor system, the circulating fluid pipeline of the motor system is connected to port 3 of the second three-way solenoid valve 32, port 1 of the three-way solenoid valve is connected to port 3 of the four-way solenoid valve 34 through the sixth three-way pipe 33, and port 2 of the four-way solenoid valve 34 is connected to the second end of the first water pump 13.

[0099] When the parking heating circuit heats the motor and the passenger compartment, the first water pump 13, the parking heater 14, the PTC heater 17, the second water pump 18, the warm air core 15, the plate heat exchanger 12, the refrigerant heat exchanger 13 and the motor water pump 5 all work, so that the parking heater 14 and the PTC heater 17 heat the motor and the passenger compartment. The PTC heater 17 may not work, so that the parking heater 14 heats the motor and the passenger compartment alone.

[0100] In a possible implementation, Figure 2 As shown, the device to be heated includes a battery 11 and / or a motor system.

[0101] In a possible implementation, Figure 2 As shown, the parking heating circuit is used to heat the engine 20, the passenger compartment and the components to be heated;

[0102] The parking heating circuit further includes a third water pump 21, a second water pump 18, a water pump for the device to be heated, the device to be heated and a thermostat 19; the thermal management device includes a PTC heater 17, a heater core 15, a plate heat exchanger 12 and a refrigerant heat exchanger 13;

[0103] In the parking heating circuit, the first water pump 13 is connected to the second end of the first water pump 13 through the parking heater 14, the third water pump 21, the circulating fluid pipeline in the engine 20, the thermostat 19, the second water pump 18, the PTC heater 17, the heater core 15, the fourth port and the first port of the four-way solenoid valve 34, the low temperature side of the plate heat exchanger 12, the water side of the refrigerant heat exchanger 13, the water pump of the device to be heated, the circulating fluid pipeline in the device to be heated, the third port and the second port of the four-way solenoid valve 34 in sequence;

[0104] When the parking heating circuit heats the engine 20 , the passenger compartment and the device to be heated, the first water pump 13 , the parking heater 14 , the PTC heater 17 , the second water pump 18 and the heater core 15 are all in operation.

[0105] When the device to be heated is the battery 11, and the parking heating circuit is used to heat the battery 11, the passenger compartment and the engine 20, the parking heating circuit also includes a first three-way pipe 53, a second three-way pipe 54, a first three-way solenoid valve 55, a third three-way pipe 49, a seventh three-way pipe 50, a third three-way solenoid valve 59, a ninth three-way pipe 43, a second three-way proportional valve 52, a first three-way proportional valve 51, a fourth three-way pipe 30, a fifth three-way pipe 29, a first one-way valve 31 and a sixth three-way pipe 33.

[0106] When the parking heating circuit is used to heat the battery 11, the passenger compartment and the engine 20, the first end of the first water pump 13 is connected to the first end of the parking heater 14, the second end of the parking heater 14 is connected to the port 1 of the first three-way solenoid valve 55 through the first three-way pipe 53 and the second three-way pipe 54 in sequence, the port 3 of the first three-way solenoid valve 55 is connected to the inlet of the third water pump 21, the outlet of the third water pump 21 is connected to the circulating fluid pipeline of the engine 20, the circulating fluid pipeline of the engine 20 is connected to the thermostat 19, the thermostat 19 is connected to the port 2 of the third three-way solenoid valve 59 through the third three-way pipe 49 and the seventh three-way pipe 50 in sequence, the port 3 of the third three-way solenoid valve 59 is connected to the inlet of the second water pump 18, the outlet of the second water pump 18 is connected to the inlet of the PTC heater 17, and the outlet of the PTC heater 17 is connected to the ninth three-way pipe 49 and the seventh three-way pipe 50 in sequence. The three-way pipe 43 is connected to the heater core 15, the heater core 15 is connected to the port 1 of the second three-way proportional valve 52, the port 3 of the second three-way proportional valve 52 is connected to the port 1 of the first three-way proportional valve 51, the port 2 of the first three-way proportional valve 51 is connected to the fourth port of the four-way solenoid valve 34, the first port of the four-way solenoid valve 34 is connected to the low-temperature side of the plate heat exchanger 12, the low-temperature side of the plate heat exchanger 12 is connected to the water side of the refrigerant heat exchanger 13, the water side of the refrigerant heat exchanger 13 is connected to the battery water pump 10 through the fourth three-way pipe 30 and the fifth three-way pipe 29, the battery water pump 10 is connected to the circulating fluid pipeline of the battery 11, the circulating fluid pipeline of the battery 11 is connected to the third port of the four-way solenoid valve 34 through the first one-way valve 31 and the sixth three-way pipe 33 in sequence, and the second port of the four-way solenoid valve 34 is connected to the second end of the first water pump 13.

[0107] When the parking heating circuit is used to heat the battery 11, the passenger compartment and the engine 20, the first three-way solenoid valve 55 is connected between port 1 and port 3; the third three-way solenoid valve 59 is connected between port 2 and port 3; the second three-way proportional valve 52 is connected between port 1 and port 3; the first three-way proportional valve 51 is connected between port 1 and port 2; the four-way solenoid valve 34 is connected between port 1 and port 4, and between port 2 and port 3. The parking heater 14, the first water pump 13, the PTC heater 17, the second water pump 18, the heater core 15, the plate heat exchanger 12, the refrigerant heat exchanger 13 and the battery water pump 10 are all working; the third water pump 21 and the engine 20 may not work, so that the parking heater 14 and the PTC heat the battery 11, the passenger compartment and the engine 20. Among them, the PTC heater 17 may also not work, so that the parking heater 14 heats the battery 11, the passenger compartment and the engine 20 at a uniform temperature.

[0108] When the device to be heated is a motor system and the parking heating circuit is used to heat the motor system, the passenger compartment and the engine 20, the parking heating circuit also includes a first three-way pipe 53, a second three-way pipe 54, a first three-way solenoid valve 55, a third three-way pipe 49, a seventh three-way pipe 50, a third three-way solenoid valve 59, a ninth three-way pipe 43, a second three-way proportional valve 52, a first three-way proportional valve 51, a fourth three-way pipe 30, a fifth three-way pipe 29, an eighth three-way pipe 28, a second three-way solenoid valve 32 and a sixth three-way pipe 33.

[0109] When the parking heating circuit is used to heat the motor system, the passenger compartment and the engine 20, the first end of the first water pump 13 is connected to the first end of the parking heater 14, the second end of the parking heater 14 is connected to the port 1 of the first three-way solenoid valve 55 through the first three-way pipe 53 and the second three-way pipe 54 in sequence, the port 3 of the first three-way solenoid valve 55 is connected to the inlet of the third water pump 21, the outlet of the third water pump 21 is connected to the circulating fluid pipeline of the engine 20, the circulating fluid pipeline of the engine 20 is connected to the thermostat 19, the thermostat 19 is connected to the port 2 of the third three-way solenoid valve 59 through the third three-way pipe 49 and the seventh three-way pipe 50 in sequence, the port 3 of the third three-way solenoid valve 59 is connected to the inlet of the second water pump 18, the outlet of the second water pump 18 is connected to the inlet of the PTC heater 17, and the outlet of the PTC heater 17 is connected to the heater core 1 through the ninth three-way pipe 43. 5, the heater core 15 is connected with the port 1 of the second three-way proportional valve 52, the port 3 of the second three-way proportional valve 52 is connected with the port 1 of the first three-way proportional valve 51, the port 2 of the first three-way proportional valve 51 is connected with the fourth port of the four-way solenoid valve 34, the first port of the four-way solenoid valve 34 is connected with the low-temperature side of the plate heat exchanger 12, the low-temperature side of the plate heat exchanger 12 is connected with the water side of the refrigerant heat exchanger 13, the water side of the refrigerant heat exchanger 13 is connected with the motor water pump 5 through the fourth three-way pipe 30, the fifth three-way pipe 29, and the eighth three-way pipe 28, the motor water pump 5 is connected with the circulating fluid pipeline of the motor system, the circulating fluid pipeline of the motor system is connected with the port 3 of the second three-way solenoid valve 32, the port 1 of the three-way solenoid valve is connected with the third port of the four-way solenoid valve 34 through the sixth three-way pipe 33, and the second port of the four-way solenoid valve 34 is connected with the second end of the first water pump 13.

[0110] When the parking heating circuit is used to heat the motor system, the passenger compartment and the engine 20, the first three-way solenoid valve 55 has a connection between port 1 and port 3; the third three-way solenoid valve 59 has a connection between port 2 and port 3; the second three-way proportional valve 52 has a connection between port 1 and port 3; the first three-way proportional valve 51 has a connection between port 1 and port 2; the four-way solenoid valve 34 has a connection between port 1 and port 4, and between port 2 and port 3. The parking heater 14, the first water pump 13, the PTC heater 17, the second water pump 18, the warm air core 15, the plate heat exchanger 12, the refrigerant heat exchanger 13 and the motor water pump 5 are all working; the third water pump 21 and the engine 20 may not work, so that the parking heater 14, the PTC heats the motor system, the passenger compartment and the engine 20. Among them, the PTC heater 17 may not work, so that the parking heater 14 heats the motor system, the passenger compartment and the engine 20 at a uniform temperature.

[0111] In a possible implementation, Figure 2 As shown, the device to be heated includes a battery 11 and / or a motor system.

[0112] In one possible implementation, the third water pump 21, the engine 20, the thermostat 19, the parking heater 14, the first water pump 13, the second water pump 18, the battery water pump 10, the warm air core 15, the PTC heater 17, the plate heat exchanger 12 and the refrigerant heat exchanger 13 in the parking heating circuit for heating the engine 20, the passenger compartment and the device to be heated are controlled to operate, so that the parking heater 14, the engine heat and the PTC heat the battery 11, the engine 20 and the passenger compartment at an even temperature. The parking heater 14, the first water pump 13 or the PTC heater 17 may also not operate, so that the engine heat and the parking heater 14 (or PTC) heat the battery 11, the engine 20 and the passenger compartment.

[0113] The third water pump 21, the engine 20, the thermostat 19, the parking heater 14, the first water pump 13, the second water pump 18, the motor water pump 5, the warm air core 15, the PTC heater 17, the plate heat exchanger 12 and the refrigerant heat exchanger 13 in the parking heating circuit for heating the engine 20, the passenger compartment and the device to be heated are controlled to work, so that the parking heater 14, the engine heat, and the PTC heat the motor system, the engine 20 and the passenger compartment at a uniform temperature. Among them, (the parking heater 14 and the first water pump 13) or the PTC heater 17 may also not work, so that the engine heat and the parking heater 14 (or PTC) heat the motor system, the engine 20 and the passenger compartment.

[0114] In a possible implementation, Figure 2As shown, when the parking heating circuit for heating the engine 20, the passenger compartment and the device to be heated heats the device to be heated; the system further includes an EGR waste heat recovery circuit;

[0115] When the parking heating circuit for heating the engine 20, the passenger compartment and the device to be heated is in operation, the parking heater 14, the first water pump 13, the engine 20, the third water pump 21, the second water pump 18, the PTC heater 17 and the heater core 15 are all in operation;

[0116] The EGR waste heat recovery loop includes a third water pump 21, an engine 20, an exhaust gas recirculation system 22 and a turbocharger 23;

[0117] In the EGR waste heat recovery circuit, after the first end of the third water pump 21 is connected to the engine 20, it is connected to the second end of the third water pump 21 through the exhaust gas recirculation system 22 and the turbocharger 23 respectively.

[0118] In a possible implementation, Figure 2 As shown, when the parking heating circuit heats the device to be heated, the engine 20, the third water pump 21 and the thermostat 19 are all working.

[0119] Specifically, when the engine heat and the EGR waste heat of the turbocharger 23 are used to heat the motor and / or the battery 11, the engine 20, the third water pump 21 and the thermostat 19 are all working; the parking heater 14, the first water pump 13, the PTC heater 17, the second water pump 18 and the heater core 15 are all not working.

[0120] In a possible implementation, Figure 2 As shown, the device to be heated includes a battery 11 and / or a motor system.

[0121] In a possible implementation, Figure 2 As shown, when the parking heating circuit heats the passenger compartment and the device to be heated, the third water pump 21, the parking heater 14, the first water pump 13, the engine 20, the thermostat 19, the PTC heater 17, the second water pump 18 and the heater core 15 are all working.

[0122] In a possible implementation, Figure 2 As shown, the system further includes a first heating circuit; the first heating circuit is used to heat the passenger compartment and the engine 20;

[0123] The first heating circuit includes a second water pump 18, a PTC heater 17, a heater core 15, the four-way solenoid valve 34, the first water pump 13, the parking heater 14, a third water pump 21, an engine 20 and a thermostat 19;

[0124] In the first heating circuit, the outlet of the second water pump 18 is connected to the inlet of the second water pump 18 through the PTC heater 17, the heater core 15, the fourth port and the second port of the four-way solenoid valve 34, the first water pump 13, the parking heater 14, the third water pump 21, the circulating fluid pipeline in the engine 20 and the thermostat 19 in sequence.

[0125] In this embodiment, the first heating circuit also includes a ninth three-way pipe 43, a second three-way proportional valve 52, a first three-way proportional valve 51, a first three-way pipe 53, a second three-way pipe 54, a first three-way solenoid valve 55, a third three-way pipe 49, a seventh three-way pipe 50 and a third three-way solenoid valve 59.

[0126] In the first heating circuit, the outlet of the second water pump 18 is connected to the inlet of the PTC heater 17, the outlet of the PTC heater 17 is connected to the heater core 15 through the ninth three-way pipe 43, the heater core 15 is connected to the port 1 of the second three-way proportional valve 52, the port 3 of the second three-way proportional valve 52 is connected to the port 1 of the first three-way proportional valve 51, the port 2 of the first three-way proportional valve 51 is connected to the fourth port of the four-way solenoid valve 34, the second port of the four-way solenoid valve 34 is connected to the second end of the first water pump 13, the first end of the first water pump 13 is connected to the The first end is connected, the second end of the parking heater 14 is connected to the port 1 of the first three-way solenoid valve 55 through the first three-way pipe 53 and the second three-way pipe 54 in sequence, the port 3 of the first three-way solenoid valve 55 is connected to the inlet of the third water pump 21, the outlet of the third water pump 21 is connected to the circulating fluid pipeline of the engine 20, the circulating fluid pipeline of the engine 20 is connected to the thermostat 19, the thermostat 19 is connected to the port 2 of the third three-way solenoid valve 59 through the third three-way pipe 49 and the seventh three-way pipe 50 in sequence, and the port 3 of the third three-way solenoid valve 59 is connected to the inlet of the second water pump 18.

[0127] When the first heating circuit is working, the second water pump 18, the PTC heater 17, the heater core 15, the first water pump 13 and the parking heater 14 are all working, and the third water pump 21 and the engine 20 may not work, so that the parking heater 14 and the PTC heat the passenger compartment and the engine 20. Among them, the PTC heater 17 may also not work, so that the parking heater 14 heats the passenger compartment and the engine 20.

[0128] In this embodiment, the first parking heating circuit, the first heating circuit, the battery heating circuit and the motor heating circuit are controlled to operate simultaneously, so that after the water temperature on the high temperature side of the engine 20 reaches a certain level, the parking heater 14 and / or the PTC heat the battery, the motor, the passenger compartment and the engine 20.

[0129] In a possible implementation, Figure 2 As shown, the system further includes a first passenger compartment heating circuit and an EGR waste heat recovery circuit;

[0130] The first passenger compartment heating circuit includes a third water pump 21, an engine 20, a thermostat 19, a second water pump 18, a PTC heater 17 and a heater core 15;

[0131] In the first passenger compartment heating circuit, the outlet of the third water pump 21 is connected to the inlet of the third water pump 21 through the circulating fluid pipeline in the engine 20, the thermostat 19, the second water pump 18, the PTC heater 17 and the heater core 15 in sequence;

[0132] When the first passenger compartment heating circuit is working, the third water pump 21, the engine 20, the thermostat 19, the PTC heater 17, the second water pump 18 and the heater core 15 are all working;

[0133] The EGR waste heat recovery loop includes a third water pump 21, an engine 20, an exhaust gas recirculation system 22 and a turbocharger 23;

[0134] In the EGR waste heat recovery circuit, after the first end of the third water pump 21 is connected to the engine 20, it is connected to the second end of the third water pump 21 through the exhaust gas recirculation system 22 and the turbocharger 23 respectively.

[0135] In this embodiment, the first passenger compartment heating circuit also includes a third three-way pipe 49 , a seventh three-way pipe 50 , a third three-way solenoid valve 59 , a ninth three-way pipe 43 , a second three-way proportional valve 52 , a second three-way pipe 54 and a first three-way solenoid valve 55 .

[0136] In the first passenger compartment heating circuit, the outlet of the third water pump 21 is connected to the circulating fluid pipeline of the engine 20, the circulating fluid pipeline of the engine 20 is connected to the thermostat 19, the thermostat 19 is connected to the port 2 of the third three-way solenoid valve 59 through the third three-way pipe 49 and the seventh three-way pipe 50 in sequence, the port 3 of the three-way solenoid valve is connected to the second water pump 18, the second water pump 18 is connected to the PTC heater 17, the PTC heater 17 is connected to the heater core 15 through the ninth three-way pipe 43, the heater core 15 is connected to the port 1 of the second three-way proportional valve 52, the port 2 of the second three-way proportional valve 52 is connected to the port 1 of the first three-way solenoid valve 55 through the second three-way pipe 54, and the port 3 of the first three-way solenoid valve 55 is connected to the inlet of the third water pump 21.

[0137] In this embodiment, the parking heater 14 is controlled to directly heat the circuit of the battery 11, the parking heater 14 is controlled to directly heat the circuit of the motor system, the first passenger compartment heating circuit and the EGR waste heat recovery circuit to operate simultaneously, so that the parking heater 14 heats the battery 11 / motor, and the engine heat, the turbocharger 23 EGR waste heat and the PTC heat the passenger compartment.

[0138] In a possible implementation, Figure 2 As shown, the system further includes a second heating circuit and an EGR waste heat recovery circuit;

[0139] The second heating circuit includes a third water pump 21, an engine 20, a thermostat 19, a second water pump 18, a PTC heater 17, a heater core 15 and a plate heat exchanger 12;

[0140] In the second heating circuit, the outlet of the third water pump 21 is connected to the inlet of the third water pump 21 through the circulating fluid pipeline of the engine 20, the thermostat 19, the second water pump 18, the PTC heater 17, the heater core 15 and the plate heat exchanger 12 in sequence;

[0141] When the second heating circuit is working, the third water pump 21, the engine 20, the second water pump 18, the PTC heater 17, the heater core 15 and the plate heat exchanger 12 are all working;

[0142] The EGR waste heat recovery circuit includes a third water pump 21, an exhaust gas recirculation system 22 and the turbocharger 23;

[0143] In the EGR waste heat recovery circuit, after the first end of the third water pump 21 is connected to the engine, it is connected to the second end of the third water pump 21 through the exhaust gas recirculation system 22 and the turbocharger 23 respectively.

[0144] In the second heating circuit, the outlet of the third water pump 21 is connected to the circulating fluid pipeline of the engine 20, and the circulating fluid pipeline of the engine 20 is connected to the thermostat 19. The thermostat 19 is connected to the port 2 of the third three-way solenoid valve 59 through the third three-way pipe 49 and the seventh three-way pipe 50 in sequence, and the port 3 of the third three-way solenoid valve 59 is connected to the second water pump 18. The second water pump 18 is connected to the PTC heater 17. The PTC heater 17 is connected to the heater core 15 through the ninth three-way pipe 43. The heater core 15 is connected to the port 1 of the second three-way proportional valve 52, and the port 3 of the second three-way proportional valve 52 is connected to the port 1 of the first three-way proportional valve 51. The port 3 of the first three-way proportional valve 51 is connected to one end of the high temperature side of the plate heat exchanger 12, and the other end of the high temperature side of the plate heat exchanger 12 is connected to the port 1 of the three-way solenoid valve through the first three-way pipe 53 and the second three-way pipe 54 in sequence, and the port 3 of the three-way solenoid valve is connected to the inlet of the third water pump 21.

[0145] When the second heating circuit is working, port 2 and port 3 of the third three-way solenoid valve 59 are connected, port 1 and port 3 of the second three-way proportional valve 52 are connected, and port 1 and port 3 of the first three-way proportional valve 51 are connected; in addition, the third water pump 21, the engine 20 and the thermostat 19 work at the same time, so that after the water temperature on the high-temperature side of the engine 20 reaches a certain level, the second heating circuit, the battery heating circuit, the motor heating circuit and the EGR waste heat recovery circuit work at the same time, thereby realizing the function of heating the motor and / or the battery 11 with the engine heat and the EGR waste heat of the turbocharger 23.

[0146] In a possible implementation, Figure 2 As shown, the system further includes a third heating circuit;

[0147] The third heating circuit includes the third water pump 21, the engine 20, the thermostat 19, the second water pump 18, the PTC heater 17, the heater core 15, the first water pump 13 and the parking heater 14;

[0148] In the third heating circuit, the outlet of the third water pump 21 is connected to the inlet of the third water pump 21 through the circulating fluid pipeline of the engine 20, the thermostat 19, the second water pump 18, the PTC heater 17, the heater core 15, the fourth port and the second port of the four-way solenoid valve 34, the first water pump 13 and the parking heater 14 in sequence;

[0149] When the third heating circuit is working, the third water pump 21, the engine 20, the thermostat 19, the PTC heater 17, the heater core 15, the second water pump 18, the first water pump 13 and the parking heater 14 are all working.

[0150] In this embodiment, the third heating circuit also includes a first three-way pipe 53, a second three-way pipe 54, a first three-way solenoid valve 55, a third three-way pipe 49, a seventh three-way pipe 50, a third three-way solenoid valve 59, a second three-way proportional valve 52 and a first three-way proportional valve 51.

[0151] In the third heating circuit, the outlet of the third water pump 21 is connected to the circulating fluid pipeline of the engine 20, the circulating fluid pipeline of the engine 20 is connected to the thermostat 19, the thermostat 19 is connected to the port 2 of the third three-way solenoid valve 59 through the third three-way pipe 49 and the seventh three-way pipe 50 in sequence, the port 3 of the third three-way solenoid valve 59 is connected to the inlet of the second water pump 18, the outlet of the second water pump 18 is connected to the inlet of the PTC heater 17, the outlet of the PTC heater 17 is connected to the heater core 15 through the ninth three-way pipe 43, and the heater core 15 is connected to the second three-way proportional valve 5 2, port 3 of the second three-way proportional valve 52 is connected to port 1 of the first three-way proportional valve 51, port 2 of the first three-way proportional valve 51 is connected to the fourth port of the four-way solenoid valve 34, the second port of the four-way solenoid valve 34 is connected to the second end of the first water pump 13, the first end of the first water pump 13 is connected to the first end of the parking heater 14, the second end of the parking heater 14 is connected to port 1 of the first three-way solenoid valve 55 through the first three-way pipe 53 and the second three-way pipe 54 in sequence, and port 3 of the first three-way solenoid valve 55 is connected to the inlet of the third water pump 21.

[0152] When the third heating circuit is working, the third water pump 21, the engine 20, the parking heater 14, the first water pump 13, the heater core 15, the PTC heater 17 and the second water pump 18 are all working to realize the function of the parking heater 14 and the PTC heating the engine 20 and the passenger compartment; wherein, the PTC heater 17 may also not work, so that the engine 20 and the parking heater 14 heat the engine 20 and the passenger compartment.

[0153] When the third heating circuit, the second heating circuit, the battery heating circuit, the motor heating circuit and the EGR waste heat recovery circuit work together, after the water temperature on the engine side (high temperature side) reaches a certain level, the parking heater 14, the engine heat, the turbocharger 23 EGR waste heat and the PTC heater 17 can evenly heat the battery 11, the motor, the engine 20 and the passenger compartment.

[0154] In a possible implementation, Figure 2 As shown, the system further includes a second passenger compartment heating circuit;

[0155] The second passenger compartment heating circuit includes a second water pump 18, a PTC heater 17, a heater core 15 and the water-cooled condenser 26;

[0156] In the second passenger compartment heating circuit, the outlet of the second water pump 18 is connected to the inlet of the second water pump 18 through the PTC heater 17, the heater core 15, and the water-cooled condenser 26 in sequence;

[0157] When the second passenger compartment heating circuit is in operation, both the heater core 15 and the water-cooled condenser 26 are in operation.

[0158] In this embodiment, the second passenger compartment heating circuit also includes a ninth three-way pipe 43 , a second three-way proportional valve 52 , a second three-way pipe 54 , a first three-way solenoid valve 55 , a third three-way pipe 49 , a seventh three-way pipe 50 and a third three-way solenoid valve 59 .

[0159] In the second passenger compartment heating circuit, the outlet of the second water pump 18 is connected to the inlet of the PTC heater 17, the outlet of the PTC heater 17 is connected to port 1 of the second three-way proportional valve 52 through the ninth three-way pipe 43, port 2 of the second three-way proportional valve 52 is connected to port 1 of the first three-way solenoid valve 55 through the second three-way pipe 54, port 2 of the three-way solenoid valve is connected to the water-cooled condenser 26 through the third three-way pipe 49 and the seventh three-way pipe 50, the water-cooled condenser 26 is connected to port 1 of the third three-way solenoid valve 59, and port 3 of the third three-way solenoid valve 59 is connected to the inlet of the second water pump 18.

[0160] In a possible implementation, Figure 2 As shown, the system further comprises a first heat absorption circuit;

[0161] The first heat absorption circuit includes an electric compressor 25, a water-cooled condenser 26, an outdoor heat exchanger and a gas-liquid separator 27;

[0162] In the first heat absorption circuit, the outlet of the electric compressor 25 is connected to the inlet of the electric compressor 25 through the water-cooled condenser 26 , the outdoor heat exchanger and the gas-liquid separator 27 in sequence.

[0163] In this embodiment, the first heat absorption circuit further includes: a thirteenth through-pipe 46 , a first electronic expansion valve 47 , an eleventh three-way pipe 35 , a first stop valve 38 and a twelfth three-way pipe 45 .

[0164] In the first heat absorption circuit, the outlet of the electric compressor 25 is connected to the water-cooled condenser 26, the water-cooled condenser 26 is connected to the outdoor heat exchanger through the thirteenth three-way pipe 46 and the first electronic expansion valve 47, the outdoor heat exchanger is connected to one end of the gas-liquid separator 27 through the eleventh three-way pipe 35, the first stop valve 38, and the twelfth three-way pipe 45, and the other end of the gas-liquid separator 27 is connected to the inlet of the electric compressor 25.

[0165] In this embodiment, by controlling the first heat absorption circuit and the second passenger compartment heating circuit, the function of the heat pump absorbing the ambient temperature to heat the passenger compartment can be realized.

[0166] In a possible implementation, Figure 2 As shown, the system further includes a second heat absorption circuit and a motor heating circuit;

[0167] The second heat absorption circuit includes an electric compressor 25, a water-cooled condenser 26, a refrigerant heat exchanger 13 and a gas-liquid separator 27;

[0168] In the second heat absorption circuit, the outlet of the electric compressor 25 is connected to the inlet of the electric compressor 25 through the water-cooled condenser 26, the refrigerant side of the refrigerant heat exchanger 13 and the gas-liquid separator 27 in sequence;

[0169] The motor heating circuit includes a motor system, a motor water pump 5, an oil cooler 7, the four-way solenoid valve 34, the plate heat exchanger 12 and a refrigerant heat exchanger 13;

[0170] In the motor heating circuit, the outlet of the motor water pump 5 is connected to the inlet of the motor water pump 5 through the circulating liquid pipeline in the motor system, the oil cooler 7, the third port and the first port of the four-way solenoid valve 34, the low-temperature side of the plate heat exchanger 12, and the water side of the refrigerant heat exchanger 13 in sequence.

[0171] In this embodiment, the second heat absorption circuit further includes a second stop valve 40 , a thirteenth three-way pipe 39 , a second electronic expansion valve 58 , a fourth three-way solenoid valve 57 , a fourteenth three-way pipe 42 and a twelfth three-way pipe 45 .

[0172] In the second heat absorption circuit, the outlet of the electric compressor 25 is connected to the water-cooled condenser 26, and the water-cooled condenser 26 is connected to the refrigerant side of the refrigerant heat exchanger 13 through the second stop valve 40, the thirteenth three-way pipe 39, and the second electronic expansion valve 58. The other end of the refrigerant side of the refrigerant heat exchanger 13 is connected to port 1 of the fourth three-way solenoid valve 57, and port 2 of the fourth three-way solenoid valve 57 is connected to one end of the gas-liquid separator 27 through the fourteenth three-way pipe 42 and the twelfth three-way pipe 45, and the other end of the gas-liquid separator 27 is connected to the inlet of the electric compressor 25.

[0173] In this embodiment, by controlling the second heat absorption circuit, the motor heating circuit and the second passenger compartment heating circuit to operate simultaneously, the heat pump can absorb the motor waste heat to heat the passenger compartment.

[0174] In a possible implementation, Figure 2 As shown, the system further comprises a third heat absorption circuit;

[0175] The third heat absorption circuit includes an electric compressor 25, a water-cooled condenser 26, a refrigerant heat exchanger 13, an outdoor heat exchanger and a gas-liquid separator 27;

[0176] In the third heat absorption circuit, the outlet of the electric compressor 25 is connected to the inlet of the electric compressor 25 through the water-cooled condenser 26, the refrigerant side of the refrigerant heat exchanger 13, the outdoor heat exchanger and the gas-liquid separator 27 in sequence.

[0177] In this embodiment, the third heat absorption circuit also includes a second stop valve 40, a thirteenth three-way pipe 39, a second electronic expansion valve 58, a fourth three-way solenoid valve 57, a thirteenth pipe 46, a first electronic expansion valve 47, an eleventh three-way pipe 35, a first stop valve 38 and a twelfth three-way pipe 45.

[0178] In the third heat absorption circuit, the outlet of the electric compressor 25 is connected to the water-cooled condenser 26, and the water-cooled condenser 26 is connected to the refrigerant side of the refrigerant heat exchanger 13 through the second stop valve 40, the thirteenth three-way pipe 39, and the second electronic expansion valve 58. The other end of the refrigerant side of the refrigerant heat exchanger 13 is connected to port 1 of the fourth three-way solenoid valve 57, and port 3 of the fourth three-way solenoid valve 57 is connected to the outdoor heat exchanger through the thirteenth pipe 46 and the first electronic expansion valve 47. The outdoor heat exchanger is connected to one end of the gas-liquid separator 27 through the eleventh three-way pipe 35, the first stop valve 38, and the twelfth three-way pipe 45, and the other end of the gas-liquid separator 27 is connected to the inlet of the electric compressor 25.

[0179] In this embodiment, the third heat absorption circuit, the battery heating circuit and the motor heating circuit are controlled to operate simultaneously, so that the battery 11 and / or the motor can be heated by a heat pump.

[0180] In one possible implementation, the third heat absorption circuit, the parking heating circuit and the EGR waste heat recovery circuit are controlled to operate simultaneously, so that the battery 11, the motor, the engine 20 and the passenger compartment can be heated simultaneously by the heat pump, the parking heater 14, the engine heat, the EGR waste heat and the PTC.

[0181] In one possible implementation, the third heat absorption circuit, the second heating circuit, the third heating circuit and the EGR waste heat recovery circuit are controlled to operate simultaneously, so that after the water temperature on the engine side (high temperature side) reaches a certain level, the battery 11, the motor, the engine 20 and the passenger compartment can be heated simultaneously through the heat pump, the parking heater 14, the engine heat, the EGR waste heat and the PTC.

[0182] From the above embodiments, it can be seen that the vehicle thermal management system provided by the present embodiment can use the parking heater 14 to heat the high-voltage battery pack when the vehicle is refrigerated for a long time in cold or even extremely cold areas, so as to ensure the working temperature of the battery pack and the low-temperature cold start of the engine 20, without the need for additional electric energy consumption such as PTC heating, to ensure that the battery pack is at the optimal working temperature when discharging and the engine 20 is started, thereby reducing energy consumption; when the vehicle is refrigerated for a long time in cold or even extremely cold areas, when the parking heater 14 is used to heat the high-voltage battery pack to start the engine 20, the parking heater 14, the engine heat, the turbocharger 23 and the EGR waste heat coolant can be used to directly flow through the battery and the motor for heating. When the engine heat reaches a certain value, the plate heat exchanger 12 is used for uniform temperature heating, which can meet the needs of rapid vehicle use in extremely cold areas and reduce the energy consumption of the whole vehicle; in cold or even extremely cold areas When the vehicle is refrigerated for a long time, a heat pump and water heating PTC, engine heat, EGR waste heat, and parking heater 14 can be used to heat the battery, motor, engine 20, and passenger compartment at the same time, so that the vehicle can be heated with maximum efficiency to meet the needs of rapid vehicle use and heating in extremely cold areas; when starting the vehicle or driving in winter, when the vehicle battery and passenger compartment need to be heated at the same time, only the parking heater 14 can be used to heat the battery, and the engine heat and EGR waste heat, PTC and other energies can be used to heat the passenger compartment. Alternatively, a heat pump, parking heater 14, engine heat, EGR waste heat, and PTC can be used to heat the passenger compartment at the same time. Using waste heat for heating can achieve energy-saving effects, so that it can achieve energy-saving effects while maintaining the optimal operating temperature during driving, greatly reducing the energy consumption of air-conditioning heating and battery heating systems, thereby improving the vehicle's endurance.

[0183] In a second aspect, the present application provides a vehicle, comprising the vehicle thermal management system described in any one of the first aspects above.

[0184] The embodiments described above are only used to illustrate the technical solutions of the present application, rather than to limit them. Although the present application has been described in detail with reference to the aforementioned embodiments, a person skilled in the art should understand that the technical solutions described in the aforementioned embodiments may still be modified, or some of the technical features may be replaced by equivalents. Such modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the embodiments of the present application, and should all be included in the protection scope of the present application.

Claims

1. A thermal management system for a vehicle, characterized in that: include: parking heating circuit; The parking heating circuit includes a first water pump, a four-way solenoid valve, a thermal management device and a parking heater; wherein the parking heater is connected to the fuel system of the vehicle and generates heat by burning fuel; In the parking heating circuit, the first end of the first water pump is connected to the second end of the first water pump through the parking heater, the thermal management device, and the four-way solenoid valve; The parking heating circuit is used to heat at least one component among a battery, a motor, an engine and a passenger compartment of the vehicle.

2. The thermal management system of a vehicle according to claim 1, characterized in that: The parking heating circuit also includes a device to be heated and a water pump for the device to be heated; the thermal management device includes a plate heat exchanger and a refrigerant heat exchanger; In the parking heating circuit, the first end of the first water pump is communicated with the first end of the parking heater, the second end of the parking heater is communicated with the fourth port of the four-way solenoid valve, the first port of the four-way solenoid valve is connected to the low-temperature side inlet of the plate heat exchanger, the low-temperature side outlet of the plate heat exchanger is communicated with the water side inlet of the refrigerant heat exchanger, the water side outlet of the refrigerant heat exchanger is communicated with the inlet of the water pump of the device to be heated, the outlet of the water pump of the device to be heated is communicated with the third port of the four-way solenoid valve through the device to be heated, and the second port of the four-way solenoid valve is communicated with the second end of the first water pump.

3. The thermal management system for a vehicle according to claim 2, characterized in that: The device to be heated includes a battery and / or a motor system.

4. The thermal management system for a vehicle according to claim 1, characterized in that: The thermal management device includes a plate heat exchanger; In the parking heating circuit, the first end of the first water pump is communicated with the first end of the parking heater, the second end of the parking heater is communicated with the high-temperature side inlet of the plate heat exchanger, the high-temperature side outlet of the plate heat exchanger is communicated with the fourth port of the four-way solenoid valve, and the second port of the four-way solenoid valve is communicated with the second end of the first water pump.

5. The thermal management system for a vehicle according to claim 1, characterized in that: The parking heating circuit is used to heat the passenger compartment; The parking heating circuit also includes a second water pump; the thermal management device includes a PTC heater and a heater core; In the parking heating circuit, the first water pump is connected to the second end of the first water pump in sequence through the parking heater, the second water pump, the PTC heater, the heater core, the fourth port and the second port of the four-way solenoid valve.

6. The thermal management system for a vehicle according to claim 1, characterized in that: The parking heating circuit is used to heat the passenger compartment and the engine; The parking heating circuit further includes a third water pump, the engine and a second water pump; the thermal management device further includes a PTC heater and a heater core; In the parking heating circuit, the first water pump is connected to the second end of the first water pump through the parking heater, the third water pump, the circulating fluid pipeline of the engine, the second water pump, the PTC heater, the heater core, the fourth port and the second port of the four-way solenoid valve in sequence.

7. The thermal management system for a vehicle according to claim 1, characterized in that: The parking heating circuit is used to heat the passenger compartment and the components to be heated; The parking heating circuit also includes a water pump for the device to be heated, the device to be heated and a second water pump; the thermal management device includes a PTC heater, a heater core, a plate heat exchanger and a refrigerant heat exchanger; In the parking heating circuit, the first water pump is connected to the second end of the first water pump via the parking heater, the second water pump, the PTC heater, the heater core, the fourth port and the first port of the four-way solenoid valve, the low-temperature side of the plate heat exchanger, the water side of the refrigerant heat exchanger, the water pump of the device to be heated, the device to be heated, the third port and the second port of the four-way solenoid valve in sequence.

8. The thermal management system for a vehicle according to claim 1, characterized in that: The parking heating circuit is used to heat the engine, the passenger compartment and the components to be heated; The parking heating circuit also includes a third water pump, a second water pump, a water pump for the device to be heated, and a device to be heated; the thermal management device includes a PTC heater, a heater core, a plate heat exchanger, and a refrigerant heat exchanger; In the parking heating circuit, the first water pump is connected to the second end of the first water pump via the parking heater, the third water pump, the circulating fluid pipeline in the engine, the second water pump, the PTC heater, the heater core, the fourth port and the first port of the four-way solenoid valve, the low-temperature side of the plate heat exchanger, the water side of the refrigerant heat exchanger, the water pump of the device to be heated, the circulating fluid pipeline in the device to be heated, the third port and the second port of the four-way solenoid valve in sequence.

9. The thermal management system for a vehicle according to claim 7 or 8, characterized in that: The device to be heated includes a battery and / or a motor system.

10. The thermal management system for a vehicle according to claim 1 or 2, characterized in that: The system further includes a first heating circuit; the first heating circuit is used to heat the passenger compartment and the engine; The first heating circuit includes a second water pump, a PTC heater, a heater core, the four-way solenoid valve, the first water pump, the parking heater, a third water pump and an engine; In the first heating circuit, the outlet of the second water pump is connected to the inlet of the second water pump through the PTC heater, the heater core, the fourth port and the second port of the four-way solenoid valve, the first water pump, the parking heater, the third water pump and the circulating fluid pipeline in the engine in sequence.

11. The thermal management system for a vehicle according to claim 1, characterized in that: The system also includes a second heating circuit and an EGR waste heat recovery circuit; The second heating circuit includes a third water pump, an engine, a second water pump, a PTC heater, a heater core and a plate heat exchanger; In the second heating circuit, the outlet of the third water pump is connected to the inlet of the third water pump through the circulating fluid pipeline of the engine, the second water pump, the PTC heater, the heater core and the plate heat exchanger in sequence; The EGR waste heat recovery loop includes a third water pump, an exhaust gas recirculation system and a turbocharger; In the EGR waste heat recovery circuit, after the first end of the third water pump is connected to the engine, it is connected to the second end of the third water pump through the exhaust gas recirculation system and the turbocharger respectively.

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

Images