Comprehensive thermal management control system of new energy automobile

Abstract

The invention belongs to the technical field of new energy automobile heat management, and particularly relates to a new energy automobile comprehensive heat management control system which comprises an electric compressor, a water condenser, a first electromagnetic valve, a second electromagnetic valve, a third electromagnetic valve, a first electronic expansion valve, a second electronic expansion valve, a condenser, a gas-liquid separator, an evaporator, a chiller, a kettle and a passenger compartment water pump. A passenger compartment water pump, a W-PTC, a warm air core body, a battery pack, a five-way valve, an electric controller, a motor and a radiator assembly are included. According to the technical scheme, the comprehensive thermal management control system for the automobile can improve the driving mileage of a new energy automobile, prolong the service life of a battery, improve the energy utilization efficiency and reduce the energy consumption.

Description

Technical Field

[0001] The present invention belongs to the technical field of thermal management of new energy vehicles, and in particular relates to a comprehensive thermal management control system for new energy vehicles. Background Art

[0002] As new energy vehicles continue to develop towards high energy density, high energy conversion efficiency and high integration, the demand for thermal management of the three-electric system is increasing day by day, which has promoted the development of an integrated thermal management system. The integrated thermal management system couples the thermal management of the three-electric system and the thermal management of the passenger compartment to achieve refined management of the heat of the entire vehicle, effectively improve energy utilization and driving comfort, and thus solve the range and thermal safety issues of electric vehicles in extreme climatic conditions, and improve the thermal management efficiency of the entire vehicle.

[0003] Most traditional electric vehicles currently on the market use refrigerant to cool the passenger compartment through compression by an electric compressor, heat dissipation by a condenser, and heat absorption by an evaporator. They also use APTCs of varying power levels to heat the passenger compartment and air cooling to dissipate heat from the battery. Using APTC to heat the passenger compartment and air cooling to cool the battery increases vehicle energy consumption, impacting mileage and shortening battery life. Summary of the Invention

[0004] The purpose of the present invention is to provide a comprehensive thermal management control system for new energy vehicles, which adopts a comprehensive thermal management solution of battery liquid cooling, heat pump, and five-way valve to achieve the functions of Table 1:

[0005] Table 1

[0006]

[0007] To achieve the above objectives, this application is implemented through the following technical solutions:

[0008] A comprehensive thermal management control system for a new energy vehicle, wherein an electric compressor is connected via a first tee of a pipeline, the first tee is respectively connected to a water condenser and a first solenoid valve via pipelines, the water condenser is sequentially connected to a first electronic expansion valve and a second tee via pipelines, the first solenoid valve is connected to the second tee via a pipeline, the second tee is connected to the condenser via a pipeline, the condenser is connected to a third tee via a pipeline, the third tee is respectively connected to the second solenoid valve, the third solenoid valve, and the second electronic expansion valve via pipelines, the third solenoid valve is connected to a fifth tee via a pipeline, the fifth tee is connected to a gas-liquid separator via a pipeline and then returns to the electric compressor;

[0009] The second solenoid valve is connected to the evaporator through a pipeline, the evaporator is connected to the fifth three-way valve through a pipeline, the second electronic expansion valve is connected to the chiller through a pipeline, and the chiller is connected to the fifth three-way valve through a pipeline;

[0010] The kettle is connected to the fourth three-way valve and the passenger compartment water pump via pipelines, the passenger compartment water pump is connected to the water condenser via pipelines, the water condenser is connected to the W-PTC via pipelines, the W-PTC is connected to the first port of the electronic three-way valve via pipelines, the second port of the electronic three-way valve is connected to the heater core via pipelines, the heater core is connected to the fourth three-way valve via pipelines, the third port of the electronic three-way valve is connected to the chiller via pipelines, and the chiller is connected to the fourth three-way valve via pipelines;

[0011] The battery pack is connected to the chiller and the second interface of the five-way valve through pipelines respectively. The first interface of the five-way valve is connected to the chiller through a pipeline. The third interface of the five-way valve is connected to the electronic control and the motor in sequence through pipelines. The motor is connected to the fifth interface of the five-way valve and the radiator assembly through pipelines respectively. The radiator assembly is connected to the fourth interface of the five-way valve through a pipeline.

[0012] Furthermore, a pressure and temperature sensor is provided on the pipeline between the chiller and the fifth tee, a pressure sensor is provided on the pipeline between the first tee and the electric compressor, a first temperature sensor is provided on the pipeline between the chiller and the battery pack, a second temperature sensor is provided on the pipeline between the battery pack and the second interface of the five-way valve, and a third temperature sensor is provided on the pipeline between the motor and the fifth interface of the five-way valve and the radiator assembly.

[0013] Furthermore, the following operating modes are included: passenger compartment cooling mode only, battery cooling mode only, passenger compartment and battery cooling mode at the same time, battery cooling mode through radiator, battery heating mode using motor waste heat recovery, passenger compartment heating mode only using heat pump, battery heating mode only using heat pump, passenger compartment and battery heating mode using heat pump at the same time, passenger compartment auxiliary heating mode using WPTC, battery auxiliary heating mode using WPTC, passenger compartment and battery auxiliary heating mode using WPTC, battery temperature equalization / electric drive cooling mode.

[0014] Furthermore, in the passenger compartment cooling mode only, the first solenoid valve and the second solenoid valve are opened, the third solenoid valve is closed, and the first electronic expansion valve and the second electronic expansion valve are closed;

[0015] In the battery cooling mode only, the first solenoid valve is open, the second and third solenoid valves are closed, the first electronic expansion valve is closed, and the second electronic expansion valve is open;

[0016] In the passenger compartment and battery simultaneous cooling mode, the first solenoid valve and the second solenoid valve are opened, the third solenoid valve is closed, the first electronic expansion valve is closed, and the second electronic expansion valve is opened.

[0017] Furthermore, in the battery cooling mode through the radiator, the first interface of the five-way valve is connected to the fourth interface, the fifth interface is closed, the battery is fully circulated, and the radiator assembly is used to cool the battery.

[0018] Furthermore, the battery utilizes the waste heat of the motor to recover the heating mode, the second interface of the five-way valve is connected to the third interface, the first interface is connected to the fifth interface, the fourth interface is closed, and the battery utilizes the waste heat of the motor for heating.

[0019] Furthermore, in a heat pump heating mode for the passenger compartment only, the first solenoid valve and the second solenoid valve are closed, the third solenoid valve is opened, the first electronic expansion valve is opened, the second electronic expansion valve is closed, and the first port of the electronic three-way valve is connected to the second port;

[0020] In the heat pump heating mode using only the battery, the first solenoid valve and the second solenoid valve are closed, the third solenoid valve is opened, the first electronic expansion valve is opened, the second electronic expansion valve is closed, and the first interface of the electronic three-way valve is connected to the third interface;

[0021] In the heat pump heating mode for the passenger compartment and the battery at the same time, the first solenoid valve and the second solenoid valve are both open, the third solenoid valve is closed, the first electronic expansion valve is closed, the second electronic expansion valve is opened, and the three interfaces of the electronic three-way valve are fully open.

[0022] Furthermore, in the WPTC auxiliary heating mode for the passenger compartment, the first solenoid valve, the second solenoid valve, and the third solenoid valve are all closed, the first electronic expansion valve and the second electronic expansion valve are all closed, and the first port of the electronic three-way valve is connected to the second port;

[0023] In the WPTC auxiliary heating mode for the battery, the first, second, and third solenoid valves are all closed, the first and second electronic expansion valves are all closed, and the first and third interfaces of the electronic three-way valve are connected;

[0024] In the WPTC auxiliary heating mode when the passenger compartment and the battery use the WPTC auxiliary heating mode at the same time, the first solenoid valve, the second solenoid valve and the third solenoid valve are all closed, the first electronic expansion valve and the second electronic expansion valve are all closed, and the three interfaces of the electronic three-way valve are fully open.

[0025] Furthermore, in the battery temperature equalization / electric drive heat dissipation mode, the first interface of the five-way valve is connected to the second interface, the third interface is connected to the fourth interface, and the fifth interface is closed. The electronic control and the motor are both cooled through the radiator assembly, and the battery temperature is equalized.

[0026] The beneficial effects of the present invention are:

[0027] The automotive integrated thermal management control system of this technical solution can increase the mileage of new energy vehicles, extend battery life, improve energy utilization efficiency and reduce energy consumption. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1 This is a schematic diagram of the integrated thermal management control system for new energy vehicles according to the present invention.

[0029] Description of reference numerals:

[0030] 1. Electric compressor; 2. W-PTC; 3. Pressure and temperature sensor; 4. Pressure sensor; 5. First solenoid valve; 6. Second solenoid valve; 7. Third solenoid valve; 8. First electronic expansion valve; 9. Second electronic expansion valve; 10. Gas-liquid separator; 11. Evaporator; 12. Heater core; 13. Water condenser; 14. Passenger compartment water pump; 15. Kettle; 16. Electronic three-way valve; 17. Chiller; 18. Battery pack; 19. Five-way valve; 20. Motor; 21. Electronic control; 22. Condenser; 23. Radiator assembly; 24. First three-way valve; 25. Second three-way valve; 26. Third three-way valve; 27. Fourth three-way valve; 28. Fifth three-way valve. DETAILED DESCRIPTION

[0031] The technical solution of the present invention is described in detail below with reference to the accompanying drawings. The following embodiments are merely exemplary and can only be used to explain and illustrate the technical solution of the present invention, and cannot be interpreted as limiting the technical solution of the present invention.

[0032] like Figure 1 As shown, the present application provides a comprehensive thermal management control system for new energy vehicles, the electric compressor 1 is connected through a first three-way pipe 24, the first three-way pipe 24 is connected to the water condenser 13 and the first solenoid valve 5 respectively through pipes, the water condenser 13 is connected to the first electronic expansion valve 8 and the second three-way pipe 25 in sequence through pipes, the first solenoid valve 5 is connected to the second three-way pipe 25 through a pipe, the second three-way pipe 25 is connected to the condenser 22 through a pipe, the condenser 22 is connected to the third three-way pipe 26 through a pipe, the third three-way pipe 26 is connected to the second solenoid valve 6, the third solenoid valve 7 and the second electronic expansion valve 9 respectively through pipes, the third solenoid valve 7 is connected to the fifth three-way pipe 28 through a pipe, the fifth three-way pipe 28 is connected to the gas-liquid separator 10 through a pipe and then returns to the electric compressor 1.

[0033] The second solenoid valve 6 is connected to the evaporator 11 through a pipeline, the evaporator 11 is connected to the fifth three-way valve 28 through a pipeline, the second electronic expansion valve 9 is connected to the chiller 17 through a pipeline, and the chiller 17 is connected to the fifth three-way valve 28 through a pipeline.

[0034] The kettle 15 is connected to the fourth three-way valve 27 and the passenger compartment water pump 14 through pipelines respectively, the passenger compartment water pump 14 is connected to the water condenser 13 through a pipeline, the water condenser 13 is connected to the W-PTC 2 through a pipeline, the W-PTC 2 is connected to the first interface of the electronic three-way valve 16 through a pipeline, the second interface of the electronic three-way valve 16 is connected to the heater core 12 through a pipeline, the heater core 12 is connected to the fourth three-way valve 27 through a pipeline, the third interface of the electronic three-way valve 16 is connected to the chiller 17 through a pipeline, and the chiller 17 is connected to the fourth three-way valve 27 through a pipeline.

[0035] The battery pack 18 is connected to the chiller 17 and the second interface of the five-way valve 19 through pipelines respectively. The first interface of the five-way valve is connected to the chiller through a pipeline. The third interface of the five-way valve is connected to the electronic control and the motor in sequence through pipelines. The motor is connected to the fifth interface of the five-way valve and the radiator assembly through pipelines respectively. The radiator assembly is connected to the fourth interface of the five-way valve through a pipeline.

[0036] In this application, a pressure and temperature sensor 3 is provided on the pipeline between the chiller 17 and the fifth tee, a pressure sensor 4 is provided on the pipeline between the first tee 24 and the electric compressor 1, a first temperature sensor is provided on the pipeline between the chiller 17 and the battery pack 18, a second temperature sensor is provided on the pipeline between the battery pack and the second interface of the five-way valve, and a third temperature sensor is provided on the pipeline between the motor and the fifth interface of the five-way valve and the radiator assembly.

[0037] The integrated thermal management control system of the present application includes the following operating modes: passenger compartment cooling only mode, battery cooling only mode, passenger compartment and battery cooling mode, battery cooling mode through radiator, battery heating mode using motor waste heat recovery, passenger compartment heating mode using heat pump only, battery heating mode using heat pump only, passenger compartment and battery heating mode using heat pump simultaneously, passenger compartment auxiliary heating mode using WPTC, battery auxiliary heating mode using WPTC, passenger compartment and battery auxiliary heating mode using WPTC, battery temperature equalization / electric drive cooling mode.

[0038] In the present application, only in the passenger compartment cooling mode, the first solenoid valve and the second solenoid valve are opened, the third solenoid valve is closed, and the first electronic expansion valve and the second electronic expansion valve are closed.

[0039] In the battery cooling mode only, the first solenoid valve is open, the second and third solenoid valves are closed, the first electronic expansion valve is closed, and the second electronic expansion valve is open;

[0040] In the passenger compartment and battery cooling mode, the first solenoid valve and the second solenoid valve are opened, the third solenoid valve is closed, the first electronic expansion valve is closed, and the second electronic expansion valve is opened.

[0041] In this application, when the battery is in radiator cooling mode, the first interface of the five-way valve is connected to the fourth interface, the fifth interface is closed, the battery is in full circulation, and the radiator assembly is used to cool the battery.

[0042] In this application, the battery utilizes the waste heat of the motor to recover the heating mode. The second interface of the five-way valve is connected to the third interface, the first interface is connected to the fifth interface, and the fourth interface is closed. The battery utilizes the waste heat of the motor for heating.

[0043] In this application, only the passenger compartment uses the heat pump heating mode, the first solenoid valve and the second solenoid valve are closed, the third solenoid valve is opened, the first electronic expansion valve is opened, the second electronic expansion valve is closed, and the first interface of the electronic three-way valve is connected to the second interface.

[0044] When only the battery uses the heat pump heating mode, the first solenoid valve and the second solenoid valve are closed, the third solenoid valve is opened, the first electronic expansion valve is opened, the second electronic expansion valve is closed, and the first interface of the electronic three-way valve is connected to the third interface.

[0045] When the passenger compartment and the battery use the heat pump heating mode at the same time, the first solenoid valve and the second solenoid valve are both open, the third solenoid valve is closed, the first electronic expansion valve is closed, the second electronic expansion valve is opened, and the three interfaces of the electronic three-way valve are fully open.

[0046] In this application, the passenger compartment uses the WPTC auxiliary heating mode, the first solenoid valve, the second solenoid valve and the third solenoid valve are all closed, the first electronic expansion valve and the second electronic expansion valve are both closed, and the first interface of the electronic three-way valve is connected to the second interface.

[0047] When the battery uses the WPTC auxiliary heating mode, the first solenoid valve, the second solenoid valve and the third solenoid valve are all closed, the first electronic expansion valve and the second electronic expansion valve are both closed, and the first interface and the third interface of the electronic three-way valve are connected.

[0048] When the passenger compartment and battery use the WPTC auxiliary heating mode at the same time, the first solenoid valve, the second solenoid valve and the third solenoid valve are all closed, the first electronic expansion valve and the second electronic expansion valve are all closed, and the three interfaces of the electronic three-way valve are fully open.

[0049] In this application, in the battery temperature equalization / electric drive heat dissipation mode, the first interface of the five-way valve is connected to the second interface, the third interface is connected to the fourth interface, and the fifth interface is closed. The electronic control and the motor are both cooled through the radiator assembly, and the battery temperature is equalized.

[0050] Although the embodiments of the present application have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations may be made to these embodiments without departing from the principles and spirit of the present application, and the scope of the present application is defined by the appended claims and their equivalents.

Claims

1. A new energy vehicle integrated thermal management control system, characterized in that: The electric compressor is connected via a first tee of a pipeline, the first tee is connected to a water condenser and a first solenoid valve respectively via pipelines, the water condenser is connected to a first electronic expansion valve and a second tee in sequence via pipelines, the first solenoid valve is connected to a second tee via a pipeline, the second tee is connected to a condenser via a pipeline, the condenser is connected to a third tee via a pipeline, the third tee is connected to a second solenoid valve, a third solenoid valve and a second electronic expansion valve respectively via pipelines, the third solenoid valve is connected to a fifth tee via a pipeline, the fifth tee is connected to a gas-liquid separator via a pipeline and then returns to the electric compressor; The second solenoid valve is connected to the evaporator through a pipeline, the evaporator is connected to the fifth three-way valve through a pipeline, the second electronic expansion valve is connected to the chiller through a pipeline, and the chiller is connected to the fifth three-way valve through a pipeline; The kettle is connected to the fourth three-way valve and the passenger compartment water pump via pipelines, the passenger compartment water pump is connected to the water condenser via pipelines, the water condenser is connected to the W-PTC via pipelines, the W-PTC is connected to the first port of the electronic three-way valve via pipelines, the second port of the electronic three-way valve is connected to the heater core via pipelines, the heater core is connected to the fourth three-way valve via pipelines, the third port of the electronic three-way valve is connected to the chiller via pipelines, and the chiller is connected to the fourth three-way valve via pipelines; The battery pack is connected to the chiller and the second interface of the five-way valve through pipelines respectively. The first interface of the five-way valve is connected to the chiller through a pipeline. The third interface of the five-way valve is connected to the electronic control and the motor in sequence through pipelines. The motor is connected to the fifth interface of the five-way valve and the radiator assembly through pipelines respectively. The radiator assembly is connected to the fourth interface of the five-way valve through a pipeline.

2. The integrated thermal management control system for new energy vehicles according to claim 1, characterized in that: A pressure and temperature sensor is provided on the pipeline between the chiller and the fifth tee, a pressure sensor is provided on the pipeline between the first tee and the electric compressor, a first temperature sensor is provided on the pipeline between the chiller and the battery pack, a second temperature sensor is provided on the pipeline between the battery pack and the second interface of the five-way valve, and a third temperature sensor is provided on the pipeline between the motor and the fifth interface of the five-way valve and the radiator assembly.

3. The new energy vehicle integrated thermal management control system according to claim 1, characterized in that: It includes the following working modes: passenger compartment cooling only mode, battery cooling only mode, passenger compartment and battery cooling mode, battery cooling mode through radiator, battery heating mode using motor waste heat recovery, passenger compartment heating mode using heat pump only, battery heating mode using heat pump only, passenger compartment and battery heating mode using heat pump simultaneously, passenger compartment auxiliary heating mode using WPTC, battery auxiliary heating mode using WPTC, passenger compartment and battery auxiliary heating mode using WPTC, battery temperature equalization / electric drive cooling mode.

4. The new energy vehicle integrated thermal management control system according to claim 3, characterized in that: In the passenger compartment cooling mode only, the first solenoid valve and the second solenoid valve are open, the third solenoid valve is closed, and the first electronic expansion valve and the second electronic expansion valve are closed; In the battery cooling mode only, the first solenoid valve is open, the second and third solenoid valves are closed, the first electronic expansion valve is closed, and the second electronic expansion valve is open; In the passenger compartment and battery simultaneous cooling mode, the first solenoid valve and the second solenoid valve are opened, the third solenoid valve is closed, the first electronic expansion valve is closed, and the second electronic expansion valve is opened.

5. The integrated thermal management control system for new energy vehicles according to claim 3, characterized in that: In the battery cooling mode through the radiator, the first interface of the five-way valve is connected to the fourth interface, the fifth interface is closed, the battery is circulated, and the radiator assembly is used to cool the battery.

6. The new energy vehicle integrated thermal management control system according to claim 3, characterized in that: In the battery heating mode, the second interface of the five-way valve is connected to the third interface, the first interface is connected to the fifth interface, and the fourth interface is closed. The battery is heated by the waste heat of the motor.

7. The new energy vehicle integrated thermal management control system according to claim 3, characterized in that: In the heat pump heating mode for the passenger compartment only, the first and second solenoid valves are closed, the third solenoid valve is open, the first electronic expansion valve is open, the second electronic expansion valve is closed, and the first and second interfaces of the electronic three-way valve are connected; In the heat pump heating mode using only the battery, the first solenoid valve and the second solenoid valve are closed, the third solenoid valve is opened, the first electronic expansion valve is opened, the second electronic expansion valve is closed, and the first interface of the electronic three-way valve is connected to the third interface; In the heat pump heating mode for the passenger compartment and the battery at the same time, the first solenoid valve and the second solenoid valve are both open, the third solenoid valve is closed, the first electronic expansion valve is closed, the second electronic expansion valve is opened, and the three interfaces of the electronic three-way valve are fully open.

8. The new energy vehicle integrated thermal management control system according to claim 3, characterized in that: In the WPTC auxiliary heating mode for the passenger compartment, the first, second, and third solenoid valves are all closed, the first and second electronic expansion valves are all closed, and the first and second ports of the electronic three-way valve are connected; In the WPTC auxiliary heating mode for the battery, the first, second, and third solenoid valves are all closed, the first and second electronic expansion valves are all closed, and the first and third interfaces of the electronic three-way valve are connected; In the WPTC auxiliary heating mode when the passenger compartment and the battery use the WPTC auxiliary heating mode at the same time, the first solenoid valve, the second solenoid valve and the third solenoid valve are all closed, the first electronic expansion valve and the second electronic expansion valve are all closed, and the three interfaces of the electronic three-way valve are fully open.

9. The integrated thermal management control system for new energy vehicles according to claim 3, characterized in that: In the battery temperature equalization / electric drive cooling mode, the first interface of the five-way valve is connected to the second interface, the third interface is connected to the fourth interface, and the fifth interface is closed. The electronic control and motor are both cooled through the radiator assembly, and the battery temperature is equalized.

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