CN220242921U

CN220242921U - Thermal management system of oil-electricity hybrid electric vehicle

Info

Publication number: CN220242921U
Application number: CN202321996919.1U
Authority: CN
Inventors: 尚子威; 李豪杰; 许丰; 李玉路; 崔飞蝶
Original assignee: Xuzhou Xugong Automobile Manufacturing Co ltd
Current assignee: Xuzhou Xugong Automobile Manufacturing Co ltd
Priority date: 2023-07-27
Filing date: 2023-07-27
Publication date: 2023-12-26
Anticipated expiration: 2033-07-27

Abstract

The utility model discloses a thermal management system of a hybrid electric vehicle, which comprises: the cockpit thermal management module comprises a cockpit cooling loop and a cockpit heating loop; the battery thermal management module comprises a battery cooling loop, a battery cooling loop and a battery heating loop; the motor electric control thermal management module comprises a motor electric control cooling loop and a motor electric control heating loop; the engine thermal management module comprises an engine heat dissipation loop. The thermal management system of the hybrid electric vehicle fully considers the running conditions of the vehicle in various modes, realizes the comprehensive utilization and reasonable distribution of the electric control waste heat of the vehicle motor and the heat of the PTC water heater, maximizes the utilization rate of the electric control radiator of the motor, reduces the energy consumption of the vehicle, improves the integration level and the utilization rate of components, reduces the cost of the vehicle and simultaneously optimizes the thermal management of the vehicle.

Description

Thermal management system of oil-electricity hybrid electric vehicle

Technical Field

The utility model relates to a thermal management system of a hybrid electric vehicle, and belongs to the technical field of thermal management of vehicles.

Background

At present, the specific gravity of new energy automobiles in the automobile industry is continuously increased, wherein, a hybrid electric automobile is an important research development direction of the current automobile industry. Taking an oil-electricity hybrid electric vehicle as an example, the system needing thermal management comprises an engine system, a battery system, a motor electric control system and the like, and the traditional thermal management scheme has the defects of redundant components, high energy consumption, low energy utilization rate and the like.

Disclosure of Invention

Aiming at the problems in the prior art, the utility model provides the thermal management system of the oil-electricity hybrid electric vehicle, which realizes the integration of components of a refrigerating system, improves the utilization efficiency of waste heat energy, optimizes heat distribution, and achieves the aims of optimizing cost and improving fuel economy.

In order to achieve the above object, the present utility model provides a thermal management system for a hybrid electric vehicle, comprising:

the cockpit thermal management module comprises a cockpit cooling loop for driving a refrigerant to circulate by an electric compressor and a cockpit heating loop for heating by using heat generated by the operation of an engine;

the battery thermal management module comprises a battery cooling loop in which an electric compressor drives a refrigerant to circulate, a battery cooling loop in which a circulating medium driven by a water pump is cooled by a motor radiator, a battery heating loop in which heat generated by electric control work of a motor is utilized to heat, a battery heating loop in which heat generated by work of an engine is utilized to heat, and a battery heating loop in which water heating PTC is utilized;

the motor electric control heat management module comprises a motor electric control cooling loop for reducing the motor electric control temperature and a motor electric control heating loop for heating by using heat generated by the operation of an engine, wherein a circulating medium driven by a water pump is realized through a first channel and a second channel of the double-channel radiator;

and the engine heat management module comprises an engine heat dissipation loop for reducing the temperature of an engine by using a circulating medium driven by a water pump in the engine through an engine radiator.

As an improvement, the cabin cooling loop comprises an electric compressor, a refrigerant temperature sensor, an external condenser, a pressure sensor, an electronic expansion valve II, an air conditioning box evaporator core body and a temperature pressure sensor which are connected in sequence, and one side of the air conditioning box evaporator core body is provided with a blower.

As an improvement, the heating loop of the cockpit which is heated by the heat generated by the operation of the engine comprises an engine, an electric three-way valve I and an air conditioning box warm air core body which are connected in sequence, wherein the engine is also connected with an engine radiator, and one side of the engine radiator is provided with an engine water supplementing tank and an engine cooling fan.

As an improvement, battery cooling return circuit is including electric compressor, refrigerant temperature sensor, outside condenser, pressure sensor, electronic expansion valve one, multichannel plate heat exchanger, the temperature pressure sensor that connects gradually, multichannel plate heat exchanger still connects gradually with electric three-way valve seven, PTC water heater, water route temperature sensor, power battery, BMS controller, water route temperature sensor, battery circulating water pump, normally open stop valve, and battery moisturizing case is installed to power battery one side.

As an improvement, battery cooling circuit is including battery circulating water pump, electronic three-way valve five, binary channels radiator second passageway, electronic three-way valve four, PTC water heater, water route temperature sensor, power battery, BMS controller, water route temperature sensor that connect gradually, and battery moisturizing case is installed to power battery one side, and automatically controlled radiator fan of motor is installed to one side of binary channels radiator.

As an improvement, the battery heating loop for heating by using heat generated by electric control work of the motor comprises a DC/DC module, a motor controller, a driving motor, an electric control circulating water pump of the motor, a waterway temperature sensor, an electric three-way valve, a normally open stop valve, a plate heat exchanger II, a battery circulating water pump, a PTC water heater, a power battery, a BMS controller and a battery water supplementing tank;

the battery heating loop for heating by using heat generated by the operation of the engine comprises an engine, an engine radiator, an engine water supplementing tank, an engine radiator fan, an electric three-way valve, a normally open stop valve, a multi-channel plate heat exchanger, a battery circulating water pump, a PTC water heater, a waterway temperature sensor, a power battery, a BMS controller and a battery water supplementing tank;

the battery heating loop utilizing the water heating PTC comprises a battery circulating water pump, a PTC water heater, a waterway temperature sensor, an electric three-way valve, a normally open stop valve, a power battery, a BMS controller and a battery water supplementing tank.

As an improvement, the electric control cooling loop of the motor comprises a DC/DC module, a motor controller, a driving motor, an electric control circulating water pump of the motor, a waterway temperature sensor, an electric three-way valve, a first channel of a double-channel radiator, a second channel of the double-channel radiator, an electric control water supplementing tank of the motor and an electric control cooling fan of the motor.

As an improvement, the electric control heating loop of the motor comprises an engine, an engine radiator, an engine water supplementing tank, an engine radiator fan, an electric three-way valve, a plate heat exchanger I, a DC/DC module, a motor controller, a driving motor, an electric control circulating water pump of the motor and a waterway temperature sensor.

As an improvement, the engine radiating loop comprises an engine and an engine radiator connected with the engine, wherein an engine water supplementing tank and an engine radiating fan are arranged on one side of the engine radiator.

Compared with the prior art, the utility model has the beneficial effects that:

1. in winter, the thermal management system of the hybrid electric vehicle can heat the power battery and the motor electric control part by using the waste heat of the engine, so that the hybrid electric vehicle reaches a good working temperature, and the energy utilization rate is improved; in winter, the power battery can be heated by utilizing the waste heat of the motor electric control system, so that the power battery reaches a good working temperature, and the energy utilization rate is improved; in winter, the redundant radiator part of the motor electric control system can be used for radiating the power battery, so that the damage of the compressor can be avoided while the energy is saved, and the service life of the compressor is prolonged.

2. The integration of the components such as the compressor, the condenser, the plate heat exchanger and the like can be realized, and the problem of component redundancy can be solved while the cost is optimized.

Drawings

FIG. 1 is a schematic diagram of the structure of the present utility model;

fig. 2 is a schematic diagram of the whole vehicle in a charging mode under a high temperature environment according to an embodiment;

fig. 3 is a schematic diagram of the whole vehicle in a running mode under a high temperature environment according to an embodiment;

fig. 4 is a schematic diagram of the whole vehicle in a charging mode in a low temperature environment according to an embodiment;

fig. 5 is a schematic diagram of the whole vehicle in a running mode under a low temperature environment according to an embodiment;

in the figure: 1. the engine, 2, the engine radiator, 3, the engine water supplementing tank, 4, the air conditioning tank warm air core, 5, the air heating PTC heater, 6, the air conditioning tank evaporator core, 7, the air conditioning tank, 8, the electronic expansion valve I, 9, the electronic expansion valve II, 10, the electric three-way valve I, 11, the electric compressor, 12, the refrigerant temperature sensor, 13, the outdoor condenser, 14, the pressure sensor, 15, the temperature pressure sensor, 16, the multi-channel plate heat exchanger, 17, the electric three-way valve II, 18, the power battery, 19, the BMS controller, 20, the battery water supplementing tank, 21, the waterway temperature sensor, 22, the battery circulating water pump, 23, the PTC water heater, 24, the DC/DC module, 25, the motor controller, 26, the driving motor, 27, the motor electronic control circulating water pump, 28, the two-channel radiator first channel, 29, the two-channel radiator second channel, 30, the motor electronic three-way valve II, 31, the motor electronic three-way valve II, 32, the engine heat radiating fan, 33, the blower, 34, the electric three-way valve III, 35, the electric three-way valve IV, the electric three-way valve 36, the electric three-way valve III, the electric three-way valve, 37, the six heat exchanger, the electric three-way valve II, the heat exchanger, the 41, the normally open.

Detailed Description

The present utility model will be described in further detail below in order to make the objects, technical solutions and advantages of the present utility model more apparent. It should be understood that the detailed description and specific examples, while indicating the utility model, are intended for purposes of illustration only and are not intended to limit the scope of the utility model. Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this utility model belongs, and the terms used herein in this description of the utility model are for the purpose of describing particular embodiments only and are not intended to be limiting of the utility model.

As shown in fig. 1, 2 and 3, a thermal management system for a hybrid electric vehicle includes:

The thermal management system of the hybrid electric vehicle performs thermal management according to the following modes;

1. whole car charge mode under high temperature environment, it includes: cooling the battery, and simultaneously cooling the cockpit and the battery;

2. the whole car driving mode under the high temperature environment, it includes: engine cooling, motor electric control cooling, engine cooling and cockpit cooling, motor electric control cooling and cockpit cooling, engine and motor electric control cooling and cockpit cooling;

3. the whole car charge mode under low temperature environment, it includes: battery warming, battery cooling, cabin warming, battery warming, cabin warming, and battery cooling;

4. the whole car driving mode under low temperature environment, it includes: the engine cooling is performed simultaneously with cockpit heating, the engine cooling is performed simultaneously with battery heating, the engine cooling is performed simultaneously with motor electric control heating, the engine cooling is performed simultaneously with battery and motor electric control heating, the engine cooling is performed simultaneously with battery heating and cockpit heating, the engine cooling is performed simultaneously with motor electric control heating and cockpit heating, the engine cooling is performed simultaneously with battery and motor electric control heating and cockpit heating, and the motor electric control cooling is performed simultaneously with battery heating.

Specifically, referring to fig. 2, the entire vehicle charging mode in a high temperature environment:

and (one) cooling the battery: when the water temperature of a battery cell or a battery waterway is too high, the BMS controller 19 sends a battery cooling signal, the electric compressor 11 is started, the refrigerant reaches the outdoor condenser 13 through the refrigerant temperature sensor 12, at the moment, the refrigerant condenses and liquefies, the pressure value is recognized to be normal through the pressure sensor 14, the refrigerant flows to the first electronic expansion valve 8, the refrigerant enters the interface (5) of the multi-channel plate heat exchanger 16 after throttling expansion, the refrigerant evaporates and absorbs heat in the refrigerant, the refrigerant flows out from the interface (2) of the multi-channel plate heat exchanger 16, the temperature sensor 15 returns to the electric compressor 11, meanwhile, the battery circulating waterway is started, the battery circulating water pump 22 is started, the normally open stop valve 41 is conducted, the circulating medium flows through the interfaces (3) and (6) of the multi-channel plate heat exchanger 16, the circulating medium is in the multi-channel plate heat exchanger 16 and the refrigerant performs heat exchange, at the moment, the (1) and (3) ports of the electric three-way valve seven 38 are in a conducting state, and the circulating medium returns to the battery circulating water pump 22 through the PTC 23, the waterway temperature sensor 21, the power battery 18 and the waterway temperature sensor 21, and the battery circulating water pump 22 complete circulation, and the cooling of the battery 18 and the BMS controller 19 is realized. The battery water replenishing tank 20 plays roles of replenishing water, storing water and exhausting air of the battery circulating water channel.

And (II) cooling the cockpit and the battery simultaneously: the electric compressor 11 is started, the refrigerant reaches the outdoor condenser 13 through the refrigerant temperature sensor 12, at this time, the refrigerant is condensed and liquefied, flows through the pressure sensor 14, flows to the first electronic expansion valve 8 and the second electronic expansion valve 9 respectively, at this time, the opening degree of the electronic expansion valves on two sides is controlled by the control strategy to realize flow distribution, the refrigerant flowing through the second electronic expansion valve 9 enters the air-conditioning box evaporator core 6 after being throttled to evaporate and absorb heat, then cold air is sent to the cockpit by the blower 33, the refrigerant returns to the electric compressor 11 through the temperature pressure sensor 15, the refrigerant flowing through the first electronic expansion valve 8 enters the interface (5) of the multi-channel plate heat exchanger 16 after being throttled, the refrigerant evaporates and absorbs heat in the interface (2) of the multi-channel plate heat exchanger 16, flows out through the temperature pressure sensor 15 and returns to the electric compressor 11, and the cycle is completed. The cooling agent respectively realizes the simultaneous cooling requirement of the cockpit and the battery according to the cooling strategy of the cockpit and the battery, and achieves the goal of the integration of the components of the refrigerating system.

Referring to fig. 3, the whole vehicle driving mode in a high temperature environment:

and (one) cooling an engine: when the vehicle is traveling at a high speed, the engine mode is adopted, and at this time, the coolant flows out from the engine 1, passes through the engine radiator 2, and at the same time, the engine radiator fan 32 rotates to radiate heat in the coolant to the atmosphere, and the cooled engine coolant flows back to the engine 1 to form a cycle. The engine water supplementing tank 3 plays roles in supplementing water, storing water and exhausting air of an engine circulating water channel.

And (II) electric control cooling of the motor: when the vehicle runs at medium and low speeds, the engine does not work, the battery supplies energy, and the motor drives the vehicle to advance. The motor electric control circulating water pump 27 is started, circulating media pass through the driving motor 26, the motor controller 25 and the DC/DC module 24, at the moment, the (1) port and the (3) port of the electric three-way valve III 34 are communicated, the (1) port and the (3) port of the electric three-way valve IV 35 are communicated, the (2) port and the (3) port of the electric three-way valve IV 36 are communicated, the circulating media simultaneously flow through the two-channel radiator first channel 28 and the two-channel radiator second channel 29, heat is radiated and cooled in the two-channel radiator first channel 28 and the two-channel radiator second channel 29, the heat is radiated into the atmosphere by the motor electric control radiating fan 31, and the cooled circulating media are converged and then returned to the motor electric control circulating water pump 27 to form circulation. The motor electric control water supplementing tank 30 plays roles in supplementing water, storing water and exhausting air of the motor electric control circulating waterway.

And (III) cooling the engine and the cockpit simultaneously: the cooling liquid flows out from the engine 1, passes through the engine radiator 2, and simultaneously, the engine radiator fan 32 rotates to radiate heat in the cooling liquid to the atmosphere, and the cooled engine cooling liquid flows back to the engine 1 to form circulation so as to realize engine cooling. The electric compressor 11 is started, the refrigerant reaches the outdoor condenser 13 through the refrigerant temperature sensor 12, at the moment, the refrigerant is condensed and liquefied, the pressure value is identified to be normal through the pressure sensor 14, the refrigerant flows to the electronic expansion valve II 9, the electronic expansion valve I8 is in a cut-off state, the refrigerant enters the air conditioning box evaporator core 6 to evaporate and absorb heat after being throttled, then the cold air is sent to the cockpit through the blower 33, the refrigerant returns to the electric compressor 11 through the temperature pressure sensor 15, the circulation is completed, and the cooling of the cockpit is realized.

And (IV) cooling the motor electrically and cooling the cockpit simultaneously: the motor electric control circulating water pump 27 is started, circulating media pass through the driving motor 26, the motor controller 25 and the DC/DC module 24, at the moment, the (1) port and the (3) port of the electric three-way valve III 34 are communicated, the (1) port and the (3) port of the electric three-way valve IV 35 are communicated, the (2) port and the (3) port of the electric three-way valve IV 36 are communicated, the circulating media simultaneously flow through the two-channel radiator first channel 28 and the two-channel radiator second channel 29, heat is radiated and cooled in the two-channel radiator first channel 28 and the two-channel radiator second channel 29, the heat is radiated to the atmosphere by the motor electric control radiating fan 31, and the cooled circulating media are converged and then returned to the motor electric control circulating water pump 27 to form circulation, so that the motor electric control cooling is realized. The electric compressor 11 is started, the refrigerant reaches the outdoor condenser 13 through the refrigerant temperature sensor 12, at the moment, the refrigerant is condensed and liquefied, the pressure value is identified to be normal through the pressure sensor 14, the refrigerant flows to the electronic expansion valve II 9, the electronic expansion valve I8 is in a cut-off state, the refrigerant enters the air conditioning box evaporator core 6 to evaporate and absorb heat after being throttled, then the cold air is sent to the cockpit through the blower 33, the refrigerant returns to the electric compressor 11 through the temperature pressure sensor 15, the circulation is completed, and the cooling of the cockpit is realized.

And (V) cooling the engine and the motor in an electric control way and cooling the cockpit at the same time: the cooling liquid flows out from the engine 1, passes through the engine radiator 2, and simultaneously, the engine radiator fan 32 rotates to radiate heat in the cooling liquid to the atmosphere, and the cooled engine cooling liquid flows back to the engine 1 to form circulation so as to realize engine cooling. The motor electric control circulating water pump 27 is started, circulating media pass through the driving motor 26, the motor controller 25 and the DC/DC module 24, at the moment, the (1) port and the (3) port of the electric three-way valve III 34 are communicated, the (1) port and the (3) port of the electric three-way valve IV 35 are communicated, the (2) port and the (3) port of the electric three-way valve IV 36 are communicated, the circulating media simultaneously flow through the two-channel radiator first channel 28 and the two-channel radiator second channel 29, heat is radiated and cooled in the two-channel radiator first channel 28 and the two-channel radiator second channel 29, the heat is radiated to the atmosphere by the motor electric control radiating fan 31, and the cooled circulating media are converged and then returned to the motor electric control circulating water pump 27 to form circulation, so that the motor electric control cooling is realized. The electric compressor 11 is started, the refrigerant reaches the outdoor condenser 13 through the refrigerant temperature sensor 12, at the moment, the refrigerant is condensed and liquefied, the pressure value is identified to be normal through the pressure sensor 14, the refrigerant flows to the electronic expansion valve II 9, the electronic expansion valve I8 is in a cut-off state, the refrigerant enters the air conditioning box evaporator core 6 to evaporate and absorb heat after being throttled, then the cold air is sent to the cockpit through the blower 33, the refrigerant returns to the electric compressor 11 through the temperature pressure sensor 15, the circulation is completed, and the cooling of the cockpit is realized.

Referring to fig. 4, the entire vehicle charging mode in a low temperature environment:

and (one) heating the battery: the battery circulating water pump 22 is started, the normally open stop valve 41 is conducted, circulating medium flows through the interfaces (3) and (6) of the multi-channel plate heat exchanger 16, at the moment, the (1) and (3) ports of the electric three-way valve seven 38 are conducted, the PTC water heater 23 is started, the circulating medium is heated, and after passing through the power battery 18, the circulating medium returns to the battery circulating water pump 22 to form circulation. The power of the PTC water heater 23 is determined by the waterway temperature sensor 21 to ensure the stability of the temperature of the power battery 18.

And (II) cooling the battery: the battery circulating water pump 22 is started, the normally open stop valve 41 is closed, at the moment, the (1) port and the (2) port of the electric three-way valve IV 35 are communicated, the (1) port and the (2) port of the electric three-way valve V36 are communicated, a circulating medium flows through the two-channel radiator second channel 29, the motor electric control cooling fan 31 is started to emit heat to the atmosphere, and the cooled circulating medium returns to the battery circulating water pump 22 after passing through the PTC water heater 23, the waterway temperature sensor 21 and the power battery 18 to form circulation.

And (III) heating the cockpit and heating the battery at the same time: when the cockpit needs to be warmed, the air heating PTC heater 5 is started, the blower 33 is started, and hot air is sent to the cockpit, so that the cockpit is warmed. The battery circulating water pump 22 is started, the normally open stop valve 41 is conducted, circulating medium flows through the interfaces (3) and (6) of the multi-channel plate heat exchanger 16, at the moment, the (1) and (3) ports of the electric three-way valve seven 38 are conducted, the PTC water heater 23 is started, the circulating medium is heated, and after passing through the power battery 18, the circulating medium returns to the battery circulating water pump 22 to form circulation, and the battery temperature rise is realized.

And (IV) heating the cockpit and cooling the battery simultaneously: when the cockpit needs to be warmed, the air heating PTC heater 5 is started, the blower 33 is started, and hot air is sent to the cockpit, so that the cockpit is warmed. The battery circulating water pump 22 is started, the normally open stop valve 41 is closed, at the moment, the (1) port and the (2) port of the electric three-way valve IV 35 are communicated, the (1) port and the (2) port of the electric three-way valve V36 are communicated, the (1) port and the (3) port of the electric three-way valve V38 are communicated, a circulating medium flows through the second channel 29 of the double-channel radiator, the electric motor controlled cooling fan 31 is started to emit heat into the atmosphere, and the cooled circulating medium returns to the battery circulating water pump 22 after passing through the PTC water heater 23, the waterway temperature sensor 21 and the power battery 18 to form circulation, so that battery cooling is realized.

Referring to fig. 5, the whole vehicle driving mode in the low temperature environment:

engine cooling and cockpit heating: in a low temperature environment, the vehicle under the working condition of the engine is heated by the engine cooling liquid for heating the cab. The cooling liquid flows out from the engine 1, a part of the cooling liquid passes through the engine radiator 2, the engine radiator fan 32 rotates to radiate heat in the cooling liquid into the atmosphere, the cooled engine cooling liquid flows back to the engine 1, meanwhile, the (1) and (3) ports of the electric three-way valve I10 are conducted, a part of the cooling liquid enters the warm air core 4 of the air conditioning box in the air conditioning box 7, the blower 33 is started to send hot air to the cockpit, and then the cooling liquid flows back to the engine 1 to realize the cooling of the engine and the heating of the cockpit.

(II) the engine cools while the battery warms up: in a low temperature environment, the vehicle is in an engine working condition, and the engine coolant provides heat for battery heating. The cooling liquid flows out from the engine 1, a part of the cooling liquid passes through the engine radiator 2, the engine radiator fan 32 rotates, heat in the cooling liquid is emitted to the atmosphere, the cooled engine cooling liquid flows back to the engine 1, meanwhile, the (1) port and the (2) port of the electric three-way valve I10 are conducted, the (1) port and the (2) port of the electric three-way valve II 17 are conducted, part of the cooling liquid passes through the plate heat exchanger I39, enters the (4) port of the multi-channel plate heat exchanger 16, heat is transferred in the multi-channel plate heat exchanger 16, and then flows out from the (1) port of the multi-channel plate heat exchanger 16 and returns to the engine 1. At this time, the battery circulating water pump 22 is started, the normally open stop valve 41 is conducted, the circulating medium flows through the interfaces (3) and (6) of the multi-channel plate heat exchanger 16, the engine cooling liquid heats the battery waterway circulating medium in the multi-channel plate heat exchanger 16, the (1) and (3) ports of the electric three-way valve seven 38 are conducted, and the circulating medium flows through the PTC water heater 23, the waterway temperature sensor 21 and the power battery 18 to return to the battery circulating water pump 22, so that circulation is formed. The engine is cooled while the battery is warmed up.

And (III) cooling the engine and heating the motor electrically: in a low-temperature environment, the vehicle under the working condition of the engine is heated by the engine cooling liquid for the electric control of the motor. The cooling liquid flows out from the engine 1, a part of the cooling liquid passes through the engine radiator 2, the engine radiator fan 32 rotates, heat in the cooling liquid is emitted to the atmosphere, the cooled engine cooling liquid flows back to the engine 1, meanwhile, the (1) port and the (2) port of the electric three-way valve I10 are conducted, the (1) port and the (3) port of the electric three-way valve II 17 are conducted, and part of the cooling liquid returns to the engine 1 through the plate heat exchanger I39. At this time, the motor electric control circulating water pump 27 is started, the circulating medium is conducted through the (1) and (2) ports of the driving motor 26, the motor controller 25 and the DC/DC module 24, the (1) and (2) ports of the electric three-way valve III 34 are conducted, the circulating medium enters the plate heat exchanger I39 through the plate heat exchanger II 40, the engine cooling liquid heats the motor electric control circulating medium in the plate heat exchanger I39, and the heated circulating medium returns to the motor electric control circulating water pump 27 to form circulation, so that engine cooling is realized and motor electric control heating is realized.

(IV) cooling the engine, and heating the battery and the motor electrically: the cooling liquid flows out from the engine 1, a part of the cooling liquid passes through the engine radiator 2, the engine radiator fan 32 rotates, heat in the cooling liquid is emitted to the atmosphere, the cooled engine cooling liquid flows back to the engine 1, meanwhile, the (1) and (2) ports of the electric three-way valve I10 are conducted, the (1) and (2) ports of the electric three-way valve II 17 are conducted, and part of the cooling liquid returns to the engine 1 to form circulation after passing through the plate heat exchanger I39 and the multi-channel plate heat exchanger 16. At this time, the battery circulating water pump 22 is started, the normally open stop valve 41 is turned on, the circulating medium flows through the interfaces (3) and (6) of the multi-channel plate heat exchanger 16, the (1) and (3) ports of the electric three-way valve seven 38 are turned on, and the circulating medium flows through the PTC water heater 23, the waterway temperature sensor 21 and the power battery 18 to return to the battery circulating water pump 22, so that circulation is formed. The motor electric control circulating water pump 27 is started, a circulating medium is conducted through the (1) port and the (2) port of the driving motor 26, the motor controller 25 and the DC/DC module 24, the (1) port and the (2) port of the electric three-way valve III 34 are conducted, the (1) port and the (2) port of the electric three-way valve VI are conducted, and the circulating medium enters the plate heat exchanger I39 through the plate heat exchanger II 40 and then returns to the motor electric control circulating water pump 27 to form circulation. The engine cooling liquid heats the water path circulating medium of the battery in the multi-channel plate heat exchanger 16, and heats the electric power water path circulating medium of the motor in the plate heat exchanger I39, so that the engine is cooled and the battery and the motor are heated electrically.

And (V) cooling the engine and heating the battery and the cockpit simultaneously: the cooling liquid flows out from the engine 1, a part of the cooling liquid flows out to the atmosphere through the engine radiator 2, the engine radiator fan 32 rotates, the cooled engine cooling liquid flows back to the engine 1, meanwhile, the ports (1), (2) and (3) of the electric three-way valve I10 are conducted, a part of the cooling liquid enters the warm air core 4 of the air conditioning box in the air conditioning box 7, the blower 33 is started, hot air is sent to the cockpit, then the cooling liquid flows back to the engine 1, meanwhile, the ports (1) and (2) of the electric three-way valve II 17 are conducted, and a part of the cooling liquid flows back to the engine 1 to form circulation after passing through the plate heat exchanger I39 and the multi-channel plate heat exchanger 16. At this time, the battery circulating water pump 22 is started, the normally open stop valve 41 is turned on, the circulating medium flows through the interfaces (3) and (6) of the multi-channel plate heat exchanger 16, the (1) and (3) ports of the electric three-way valve seven 38 are turned on, and the circulating medium flows through the PTC water heater 23, the waterway temperature sensor 21 and the power battery 18 to return to the battery circulating water pump 22, so that circulation is formed. The engine coolant heats the battery waterway circulating medium in the multi-channel plate heat exchanger 16, thereby realizing engine cooling and battery warming and cockpit warming.

And (six) cooling the engine and simultaneously heating the motor electrically and the cockpit: the cooling liquid flows out from the engine 1, a part of the cooling liquid flows out to the atmosphere through the engine radiator 2, the engine radiator fan 32 rotates, the cooled engine cooling liquid flows back to the engine 1, meanwhile, the ports (1), (2) and (3) of the electric three-way valve I10 are conducted, a part of the cooling liquid enters the warm air core 4 of the air conditioning box in the air conditioning box 7, the blower 33 is started, hot air is sent to the cockpit, then the cooling liquid flows back to the engine 1, meanwhile, the ports (1) and (3) of the electric three-way valve II 17 are conducted, and a part of the cooling liquid flows back to the engine 1 through the plate heat exchanger I39 to form circulation. At this time, the motor electric control circulating water pump 27 is started, the circulating medium is conducted through the (1) and (2) ports of the driving motor 26, the motor controller 25 and the DC/DC module 24, the (1) and (2) ports of the electric three-way valve III 34 are conducted, the circulating medium enters the plate heat exchanger I39 through the plate heat exchanger II 40, the engine cooling liquid heats the motor electric control circulating medium in the plate heat exchanger I39, and the heated circulating medium returns to the motor electric control circulating water pump 27 to form circulation, so that engine cooling is realized, and motor electric control heating and cabin heating are realized.

And (seventh) engine cooling, battery and motor electric control heating and cockpit heating simultaneously: the cooling liquid flows out from the engine 1, a part of the cooling liquid flows out to the atmosphere through the engine radiator 2, the engine radiator fan 32 rotates, the cooled engine cooling liquid flows back to the engine 1, meanwhile, the ports (1), (2) and (3) of the electric three-way valve I10 are conducted, a part of the cooling liquid enters the warm air core 4 of the air conditioning box in the air conditioning box 7, the blower 33 is started, hot air is sent to the cockpit, then the cooling liquid flows back to the engine 1, meanwhile, the ports (1) and (2) of the electric three-way valve II 17 are conducted, and a part of the cooling liquid flows back to the engine 1 to form circulation after passing through the plate heat exchanger I39 and the multi-channel plate heat exchanger 16. At this time, the battery circulating water pump 22 is started, the normally open stop valve 41 is turned on, the circulating medium flows through the interfaces (3) and (6) of the multi-channel plate heat exchanger 16, the (1) and (3) ports of the electric three-way valve seven 38 are turned on, and the circulating medium flows through the PTC water heater 23, the waterway temperature sensor 21 and the power battery 18 to return to the battery circulating water pump 22, so that circulation is formed. Meanwhile, the motor electric control circulating water pump 27 is started, a circulating medium is conducted through the (1) port and the (2) port of the driving motor 26, the motor controller 25 and the DC/DC module 24, the (1) port and the (2) port of the electric three-way valve III 34 are conducted, the circulating medium enters the plate heat exchanger I39 through the plate heat exchanger II 40, engine cooling liquid heats the motor electric control circulating medium in the plate heat exchanger I39, the heated circulating medium returns to the motor electric control circulating water pump 27 to form circulation, the engine cooling liquid heats the battery waterway circulating medium in the multi-channel plate heat exchanger 16, and engine cooling is realized while battery and motor electric control heating and cockpit heating.

(eight) electric control cooling of the motor and temperature rising of the battery: in a low-temperature environment, when the vehicle is in a pure electric mode, heat of the motor electric control system can be used for heating a battery, and the heat is dissipated by the motor electric control system only through the first channel of the dual-channel radiator. The motor electric control circulating water pump 27 is started, circulating medium is conducted through the driving motor 26, the motor controller 25 and the DC/DC module 24, at the moment, the (1), (2) and (3) ports of the electric three-way valve III 34 are conducted, the (1) and (3) ports of the electric three-way valve VI 37 are conducted, one part of the circulating medium flows through the plate heat exchanger II 40 and then returns to the motor electric control circulating water pump 27, the other part of the circulating medium flows through the double-channel radiator first channel 28, the circulating medium returns to the motor electric control circulating water pump 27 after heat dissipation, circulation is formed, the waterway temperature sensor 21 monitors the water outlet temperature of the motor electric control system, and logic judgment is made when the motor electric control system starts and shuts down for cooling. Meanwhile, the battery circulating water pump 22 is started, the normally open stop valve 41 is conducted, the circulating medium flows through the interfaces (3) and (6) of the multi-channel plate heat exchanger 16, the ports (1) and (2) of the electric three-way valve seven 38 are conducted, the battery circulating medium flows through the plate heat exchanger two 40 and then returns to the battery circulating water pump 22 through the PTC water heater 23, the waterway temperature sensor 21 and the power battery 18 to form circulation, and the motor electric control circulating medium and the battery circulating medium exchange heat in the plate heat exchanger two 40 to realize motor electric control cooling and battery heating.

The thermal management system of the hybrid electric vehicle fully considers the running conditions of the vehicle in various modes, realizes the comprehensive utilization and reasonable distribution of the electric control waste heat of the vehicle motor and the heat of the PTC water heater, maximizes the utilization rate of the electric control radiator of the motor, reduces the energy consumption of the vehicle, improves the integration level and the utilization rate of components, reduces the cost of the vehicle and simultaneously optimizes the thermal management of the vehicle.

The foregoing description of the preferred embodiments of the utility model is not intended to be limiting, but rather is intended to cover all modifications, equivalents, or alternatives falling within the spirit and principles of the utility model.

Claims

1. A thermal management system for a hybrid electric vehicle, comprising:

2. The thermal management system of the hybrid electric vehicle according to claim 1, wherein the cabin cooling loop comprises an electric compressor (11), a refrigerant temperature sensor (12), an external condenser (13), a pressure sensor (14), an electronic expansion valve II (9), an air conditioning case evaporator core (6) and a temperature pressure sensor (15) which are sequentially connected, and a blower (33) is arranged on one side of the air conditioning case evaporator core (6).

3. The thermal management system of the hybrid electric vehicle according to claim 1, wherein the cabin heating loop for heating by using heat generated by the operation of the engine comprises an engine (1), an electric three-way valve I (10) and an air conditioning box warm air core (4) which are sequentially connected, the engine (1) is further connected with an engine radiator (2), and an engine water supplementing tank (3) and an engine cooling fan (32) are arranged on one side of the engine radiator (2).

4. The thermal management system of the hybrid electric vehicle according to claim 1, wherein the battery cooling loop comprises an electric compressor (11), a refrigerant temperature sensor (12), an outdoor condenser (13), a pressure sensor (14), an electronic expansion valve I (8), a multi-channel plate heat exchanger (16) and a temperature pressure sensor (15) which are sequentially connected, the multi-channel plate heat exchanger (16) is further sequentially connected with an electric three-way valve seven (38), a PTC water heater (23), a waterway temperature sensor (21), a power battery (18), a BMS controller (19), a waterway temperature sensor (21), a battery circulating water pump (22) and a normally open stop valve (41), and a battery water supplementing tank (20) is arranged on one side of the power battery (18).

5. The thermal management system of the hybrid electric vehicle according to claim 1, wherein the battery cooling circuit comprises a battery circulating water pump (22), an electric three-way valve five (36), a two-channel radiator second channel (29), an electric three-way valve four (35), a PTC water heater (23), a waterway temperature sensor (21), a power battery (18), a BMS controller (19) and a waterway temperature sensor (21) which are sequentially connected, a battery water supplementing tank (20) is installed on one side of the power battery (18), and an electric motor control cooling fan (31) is installed on one side of the two-channel radiator.

6. The thermal management system of the hybrid electric vehicle according to claim 1, wherein the battery heating circuit for heating by using heat generated by electric control operation of the motor comprises a DC/DC module (24), a motor controller (25), a driving motor (26), a motor electric control circulating water pump (27), a waterway temperature sensor (21), an electric three-way valve, a normally open stop valve (41), a plate heat exchanger two (40), a battery circulating water pump (22), a PTC water heater (23), a power battery (18), a BMS controller (19) and a battery water replenishing tank (20);

the battery heating loop for heating by utilizing heat generated by the operation of the engine comprises an engine (1), an engine radiator (2), an engine water supplementing tank (3), an engine cooling fan (32), an electric three-way valve, a normally open stop valve (41), a multi-channel plate heat exchanger (16), a battery circulating water pump (22), a PTC water heater (23), a waterway temperature sensor (21), a power battery (18), a BMS controller (19) and a battery water supplementing tank (20);

the battery heating loop utilizing the water heating PTC comprises a battery circulating water pump (22), a PTC water heater (23), a waterway temperature sensor (21), an electric three-way valve, a normally open stop valve (41), a power battery (18), a BMS controller (19) and a battery water supplementing tank (20).

7. The electric-to-oil hybrid vehicle thermal management system according to claim 1, wherein the electric-to-electric cooling circuit comprises a DC/DC module (24), a motor controller (25), a driving motor (26), an electric-to-electric circulating water pump (27), a waterway temperature sensor (21), an electric three-way valve, a two-channel radiator first channel (28), a two-channel radiator second channel (29), an electric-to-electric water supplementing tank (30), and an electric-to-electric cooling fan (31).

8. The thermal management system of the hybrid electric vehicle according to claim 1, wherein the electric motor control heating circuit comprises an engine (1), an engine radiator (2), an engine water supplementing tank (3), an engine cooling fan (32), an electric three-way valve, a plate heat exchanger I (39), a DC/DC module (24), a motor controller (25), a driving motor (26), an electric motor control circulating water pump (27) and a waterway temperature sensor (21).

9. The thermal management system of the hybrid electric vehicle according to claim 1, wherein the engine radiating loop comprises an engine (1) and an engine radiator (2) connected with the engine (1), and an engine water supplementing tank (3) and an engine radiating fan (32) are arranged on one side of the engine radiator (2).