CN110154691B

CN110154691B - Automobile heat management system and method

Info

Publication number: CN110154691B
Application number: CN201910449869.7A
Authority: CN
Inventors: 史雪纯; 赵狐龙; 李小坚; 朱增怀; 刘建祥; 邵海鹏; 陈亮
Original assignee: Anhui Jianghuai Automobile Group Corp
Current assignee: Anhui Jianghuai Automobile Group Corp
Priority date: 2019-05-27
Filing date: 2019-05-27
Publication date: 2020-08-04
Anticipated expiration: 2039-05-27
Also published as: CN110154691A

Abstract

The invention relates to the technical field of automobile thermal management, and discloses an automobile thermal management system and method. The system is applied to a fuel vehicle with an engine, and comprises: the system comprises an engine exhaust pipeline, an engine waste gas waste heat recovery water circuit and a heat pump air conditioner circulation loop; the engine exhaust pipeline is used for controlling exhaust gas discharged by the engine to enter the engine exhaust gas waste heat recovery water path when the fuel vehicle is in a cold start process or a heating mode; the engine waste gas waste heat recovery water channel is used for recovering the heat of the waste gas and exchanging heat with the heat pump air conditioner circulation loop; and the heat pump air-conditioning circulation loop is used for absorbing heat from an external air and waste gas waste heat recovery water channel and heating a passenger compartment and an engine cooling system of the fuel vehicle or only heating the passenger compartment of the fuel vehicle. By the mode, the technical problems that in the prior art, the air conditioner heating effect in a cold area is poor, the water temperature of the automobile is slowly raised in a low-temperature cold start mode, and the energy is not saved and the environment is not protected are solved.

Description

Automobile heat management system and method

Technical Field

The invention relates to the technical field of automobile thermal management, in particular to an automobile thermal management system and method.

Background

With the popularization of automobiles and the continuous improvement of comfort requirements of customers, the heat management performance of automobiles is concerned by more and more customers. China has wide breadth, large climate difference and extremely cold zones like black rivers and desert rivers. For such areas, customers have made higher demands for the heating performance of vehicles. And the traditional automobile engine coolant heating system cannot meet the requirement of quick heating of customers. At present, the common solutions include connecting a fuel heater in series in a water path of an engine, and adding a thermistor (PTC) air heater in a warm air duct.

Although, the addition of a fuel heater and a PTC air heater in the engine water circuit can increase the heating rate. However, the fuel oil heater has a slow heating speed and takes too long time, so that the fuel oil heater cannot rapidly heat in a short time. However, the maximum power of the PTC air heater is limited due to the safety of the electric circuit, and thus the PTC air heater can only perform an auxiliary heating function in practical application, and cannot rapidly heat in a short time.

Because the two modes can not rapidly heat, and are not energy-saving and environment-friendly. Therefore, it is highly desirable to provide an energy-saving and environment-friendly automobile thermal management scheme capable of quickly heating.

The above is only for the purpose of assisting understanding of the technical aspects of the present invention, and does not represent an admission that the above is prior art.

Disclosure of Invention

The invention mainly aims to provide an automobile heat management system and method, and aims to solve the technical problems that in the prior art, an air conditioner in a cold area is poor in heating effect, the temperature of cold start water of an automobile at low temperature rises slowly, and energy conservation and environmental protection are insufficient.

In order to achieve the above object, the present invention provides an automotive thermal management system applied to a fuel vehicle equipped with an engine, the system comprising: the system comprises an engine exhaust pipeline, an engine waste gas waste heat recovery water circuit and a heat pump air conditioner circulation loop;

the engine exhaust pipeline is used for controlling exhaust gas discharged by the engine to enter the engine exhaust gas waste heat recovery water channel when the fuel vehicle is in a cold start process or a heating mode;

the engine waste gas waste heat recovery water channel is used for recovering the heat of the waste gas and exchanging heat with the heat pump air conditioner circulation loop;

the heat pump air conditioner circulation loop is used for absorbing heat from an outside air and waste gas waste heat recovery water channel and supplying heat to a passenger compartment and an engine cooling system of the fuel vehicle or only supplying heat to the passenger compartment of the fuel vehicle.

Preferably, the engine exhaust pipeline comprises an exhaust electric control three-way valve, and the engine exhaust gas waste heat recovery water circuit comprises a first plate heat exchanger, a first water pump and a second plate heat exchanger;

an air outlet at one side of the exhaust electric control three-way valve is connected with a high-temperature air inlet of the first plate heat exchanger and used for controlling waste gas discharged by the engine to enter the first plate heat exchanger through the high-temperature air inlet of the first plate heat exchanger when the fuel vehicle is in a cold starting process or a heating mode;

the first plate heat exchanger is used for recovering the heat of the waste gas and discharging the waste gas through a low-temperature gas outlet;

the air inlet of the first water pump is connected with the high-temperature air outlet of the first plate heat exchanger, and the air outlet of the first water pump is connected with the high-temperature air inlet of the second plate heat exchanger and used for transferring the waste heat into the second plate heat exchanger;

and the high-temperature air outlet of the second plate heat exchanger is connected with the air inlet of the heat pump air-conditioning circulation loop, and the low-temperature air inlet of the second plate heat exchanger is connected with the air outlet of the heat pump air-conditioning circulation loop and used for exchanging heat with the heat pump air-conditioning circulation loop.

Preferably, the heat pump air conditioning cycle comprises a first heat pump air conditioning cycle;

the first heat pump air conditioner circulating loop comprises a compressor, a commutator, a first heat exchanger, a third plate heat exchanger, an electronic expansion valve, a second heat exchanger, a second plate heat exchanger, a gas-liquid separator, a wind shield, a first electric control valve, a second electric control valve, a third electric control valve, a fourth electric control valve, a fifth electric control valve and a sixth electric control valve;

in the first heat pump air-conditioning circulation loop, the air outlet of the compressor is connected with the first air inlet of the reverser, the first air outlet of the reverser is respectively connected with the first end of the second electric control valve and the high-temperature air inlet of the third plate heat exchanger, the second end of the second electric control valve is connected with the air inlet of the first heat exchanger, the air outlet of the first heat exchanger is respectively connected with the first end of the fifth electric control valve and the first end of the sixth electric control valve, the low-temperature air outlet of the third plate heat exchanger is connected with the first end of the fourth electric control valve through the wind shield, the second end of the fourth electric control valve and the second end of the fifth electric control valve are respectively connected with the first end of the electronic expansion valve, and the second end of the electronic expansion valve is respectively connected with the second end of the sixth electric control valve, the air inlet of the second heat exchanger and the low-temperature air inlet of the second plate heat exchanger, the high-temperature air outlet of the second plate heat exchanger is connected with the first end of the first electric control valve, the second end of the first electric control valve and the air outlet of the second heat exchanger are respectively connected with the second air inlet of the reverser, the second air outlet of the reverser is connected with the air inlet of the gas-liquid separator, and the air outlet of the gas-liquid separator is connected with the air inlet of the compressor;

when the temperature of the coolant of the engine is not greater than a preset temperature threshold value, the first electric control valve, the second electric control valve, the fourth electric control valve and the fifth electric control valve in the first heat pump air-conditioning circulation loop are set to be opened, the third electric control valve and the sixth electric control valve are set to be closed, and the wind shield is closed downwards, so that the first heat pump air-conditioning circulation loop absorbs heat from an outside air and waste gas waste heat recovery water channel to supply heat for a passenger cabin and an engine cooling system of the fuel vehicle.

Preferably, the heat pump air-conditioning circulation circuit further comprises a second heat pump air-conditioning circulation circuit;

the second heat pump air conditioner circulating loop comprises the compressor, the commutator, the first heat exchanger, the electronic expansion valve, the second heat exchanger, the second plate heat exchanger, the gas-liquid separator, the wind shield, the first electric control valve, the second electric control valve, the third electric control valve, the fourth electric control valve, the fifth electric control valve and the sixth electric control valve;

in the second heat pump air-conditioning circulation loop, the air outlet of the compressor is connected with the first air inlet of the reverser, the first air outlet of the reverser is connected with the first end of the second electric control valve, the second end of the second electric control valve is connected with the air inlet of the first heat exchanger, the air outlet of the first heat exchanger is respectively connected with the first end of the fifth electric control valve and the first end of the sixth electric control valve, the second end of the fifth electric control valve is connected with the first end of the electronic expansion valve, the second end of the electronic expansion valve is respectively connected with the second end of the sixth electric control valve, the air inlet of the second heat exchanger and the low-temperature air inlet of the second plate heat exchanger, the high-temperature air outlet of the second plate heat exchanger is connected with the first end of the first electric control valve, and the air outlet of the first electric control valve and the second heat exchanger are respectively connected with the second air inlet of the reverser, the second air outlet of the reverser is connected with the air inlet of the gas-liquid separator, and the air outlet of the gas-liquid separator is connected with the air inlet of the compressor;

when the temperature of the cooling liquid of the engine is greater than a preset temperature threshold value, the first electric control valve, the second electric control valve and the fifth electric control valve in the first heat pump air-conditioning circulation loop are set to be opened, the third electric control valve, the fourth electric control valve and the sixth electric control valve are set to be closed, and the wind shield is closed upwards, so that the second heat pump air-conditioning circulation loop absorbs heat from an outside air and waste gas waste heat recovery water channel to supply heat for a passenger compartment of the fuel vehicle.

Preferably, the automobile thermal management system further comprises an engine water circuit;

the engine waterway circulation loop comprises a second water pump, a thermostat, a third heat exchanger and a fourth heat exchanger;

the water outlet of the second water pump is connected with the water inlet of the engine, the water outlet of the engine is connected with the water inlet of the thermostat, the first water outlet of the thermostat is connected with the water inlet of the third heat exchanger, the second water outlet of the thermostat is connected with the low-temperature water inlet of the third plate heat exchanger and is connected with the water inlet of the fourth heat exchanger through the high-temperature water outlet of the third plate heat exchanger, and the water outlets of the third heat exchanger and the fourth heat exchanger are respectively connected with the water inlet of the second water pump;

and the engine water path circulation loop and the second heat pump air conditioner circulation loop are used for heating the passenger compartment of the fuel vehicle together when the temperature of the coolant of the engine is greater than a preset temperature threshold value.

In order to achieve the above object, the present invention further provides a vehicle thermal management method applied to a vehicle thermal management system applied to a fuel vehicle equipped with an engine, the system including: the system comprises an engine exhaust pipeline, an engine waste gas waste heat recovery water circuit and a heat pump air conditioner circulation loop;

the automobile heat management method comprises the following steps:

when the fuel vehicle is in a cold start process or a heating mode, the engine exhaust pipeline controls exhaust gas discharged by the engine to enter the engine exhaust gas waste heat recovery water path;

the engine waste gas waste heat recovery water channel recovers heat of the waste gas and exchanges heat with the heat pump air conditioner circulation loop;

the heat pump air conditioner circulation loop absorbs heat from an outside air and waste gas waste heat recovery water channel to supply heat for the passenger compartment and an engine cooling system of the fuel vehicle, or only supply heat for the passenger compartment of the fuel vehicle.

Preferably, the engine exhaust pipeline comprises an exhaust electric control three-way valve, the engine exhaust gas waste heat recovery water channel comprises a first plate heat exchanger, a first water pump and a second plate heat exchanger, an air outlet at one side of the exhaust electric control three-way valve is connected with a high-temperature air inlet of the first plate heat exchanger, an air inlet of the first water pump is connected with a high-temperature air outlet of the first plate heat exchanger, an air outlet of the first water pump is connected with a high-temperature air inlet of the second plate heat exchanger, a high-temperature air outlet of the second plate heat exchanger is connected with an air inlet of the heat pump air conditioner circulation loop, and a low-temperature air inlet of the second plate heat exchanger is connected with an air outlet of the heat pump;

the engine exhaust pipeline is in when the engine exhaust pipeline is in cold-start process at the fuel vehicle, perhaps heats the mode, control the exhaust gas that the engine discharged gets into engine waste gas waste heat recovery water route, engine waste gas waste heat recovery water route for retrieve the heat of waste gas, and with the step of heat pump air conditioner circulation circuit carries out the heat transfer includes:

when the fuel vehicle is in a cold start process or a heating mode, the exhaust electric control three-way valve controls exhaust gas discharged by the engine to enter the first plate heat exchanger through a high-temperature air inlet of the first plate heat exchanger;

the first plate heat exchanger recovers the heat of the waste gas and discharges the waste gas through a low-temperature gas outlet;

the first water pump transfers the waste heat into the second plate heat exchanger;

and the second plate heat exchanger exchanges heat with the heat pump air conditioner circulation loop.

the heat pump air conditioner circulation loop absorbs heat from an outside air and waste gas waste heat recovery water channel and supplies heat to a passenger compartment and an engine cooling system of the fuel vehicle, and the heat pump air conditioner circulation loop comprises the following steps:

the heat pump air conditioner circulation loop absorbs heat from the outside air and waste gas waste heat recovery water path, and the step of heating the passenger compartment of the fuel vehicle further comprises the following steps:

when the temperature of the cooling liquid of the engine is greater than a preset temperature threshold value, the first electric control valve, the second electric control valve and the fifth electric control valve in the second heat pump air-conditioning circulation loop are set to be opened, the third electric control valve, the fourth electric control valve and the sixth electric control valve are set to be closed, and the wind shield is closed upwards, so that the second heat pump air-conditioning circulation loop absorbs heat from an outside air and waste gas waste heat recovery water channel to supply heat for a passenger compartment of the fuel vehicle.

Preferably, the automobile thermal management system further comprises an engine water path circulation loop, the engine water path circulation loop comprises a second water pump, a thermostat, a third heat exchanger and a fourth heat exchanger, a water outlet of the second water pump is connected with a water inlet of the engine, a water outlet of the engine is connected with a water inlet of the thermostat, a first water outlet of the thermostat is connected with a water inlet of the third heat exchanger, a second water outlet of the thermostat is connected with a low-temperature water inlet of the third plate heat exchanger and is connected with a water inlet of the fourth heat exchanger through a high-temperature water outlet of the third plate heat exchanger, and water outlets of the third heat exchanger and the fourth heat exchanger are respectively connected with a water inlet of the second water pump;

when the temperature of the coolant of the engine is greater than a preset temperature threshold value, the first electronic control valve, the second electronic control valve and the fifth electronic control valve in the first heat pump air-conditioning circulation loop are set to be opened, the third electronic control valve, the fourth electronic control valve and the sixth electronic control valve are set to be closed, and the wind shield is closed upwards, so that the second heat pump air-conditioning circulation loop absorbs heat from an outside air and waste gas waste heat recovery water path to heat the passenger compartment of the fuel vehicle, wherein the step comprises the following steps:

and when the temperature of the coolant of the engine is greater than a preset temperature threshold value, the engine water path circulation loop and the second heat pump air conditioner circulation loop jointly supply heat for the passenger compartment of the fuel vehicle.

According to the automobile heat management system and the automobile heat management method, when the fuel vehicle is in a cold starting process or a heating mode, the heat of the waste gas discharged by the engine is recovered, and then the heat pump air-conditioning circulation loop utilizes the recovered waste heat and the air heat obtained from the outside air to heat, so that the passenger compartment of the fuel vehicle is heated, the energy is recycled, and the effects of energy conservation and environmental protection are achieved.

In addition, because the heat pump air conditioner circulation loop utilizes the heat of the waste gas exhausted from the engine when heating the passenger compartment of the fuel vehicle, the heating process realizes the heating by simultaneously utilizing the heat of the air and the heat of the waste gas of the engine, thereby greatly accelerating the heating speed and improving the heating effect.

Drawings

FIG. 1 is a block diagram of a first embodiment of a thermal management system for an automobile in accordance with the present invention;

FIG. 2 is a block diagram of a second embodiment of the thermal management system of an automobile according to the present invention;

FIG. 3 is a schematic diagram of a connection structure of specific components of a second embodiment of the thermal management system of the vehicle according to the present invention;

FIG. 4 is a schematic flow chart illustrating a first embodiment of a method for thermal management of a vehicle according to the present invention;

FIG. 5 is a flowchart illustrating a specific implementation process of step S10 and step S20 in a second embodiment of the method for thermal management of an automobile according to the present invention;

FIG. 6 is a flowchart illustrating a second embodiment of a method for thermal management of a vehicle according to the present invention.

The implementation, functional features and advantages of the objects of the present invention will be further explained with reference to the accompanying drawings.

Detailed Description

It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.

Referring to fig. 1, fig. 1 is a structural block diagram of a first embodiment of the thermal management system of an automobile according to the present invention.

In a first embodiment, the automotive thermal management system comprises: the system comprises an engine exhaust pipeline 100, an engine waste gas waste heat recovery water circuit 200 and a heat pump air conditioning circulation loop 300.

The engine exhaust pipeline 100 is used for controlling exhaust gas discharged by the engine to enter the engine exhaust gas waste heat recovery water circuit 200 when the fuel vehicle is in a cold start process or a heating mode; the engine waste gas waste heat recovery water path 200 is used for recovering heat of the waste gas and exchanging heat 300 with the heat pump air-conditioning circulation loop 300; the heat pump air conditioning circulation loop 300 is configured to absorb heat from an outside air and waste gas waste heat recovery water path, and to heat the passenger compartment of the fuel vehicle and an engine cooling system, or to only heat the passenger compartment of the fuel vehicle.

As will be apparent from the foregoing description, the engine exhaust line 100 is primarily used to control the direction of exhaust gases emitted by the engine. Thus, in practical applications, the specific component of the engine exhaust line 100 may be an exhaust electrically controlled three-way valve.

In addition, the engine exhaust gas waste heat recovery water channel 200 may be specifically formed of a heat exchanger and a water pump in practical use.

In addition, it should be understood that the engine exhaust gas waste heat recovery water circuit 200 is mainly used for recovering the heat of the exhaust gas and exchanging heat 300 with the heat pump air-conditioning circulation loop 300. Thus, in order to recover the waste heat from the exhaust gas and transfer the waste heat to the heat pump air conditioning cycle 300. Two plate heat exchangers with two sets of inlets and outlets (one set is high inlet and low outlet, and the other set is low inlet and high outlet) are required to be matched with a water pump to complete the functions. For ease of distinction, the two plate heat exchangers will be referred to hereinafter as the first plate heat exchanger and the second plate heat exchanger, respectively.

In addition, since the engine of the fuel vehicle needs to be provided with a water pump, for the sake of convenience of distinction, the water pump in the engine exhaust gas waste heat recovery water circuit 200 is referred to as a first water pump, and the water pump appearing subsequently is referred to as a second water pump.

Correspondingly, when the engine exhaust pipeline 100 is composed of an exhaust electric control three-way valve and the engine exhaust waste heat recovery water channel 200 is composed of a first plate heat exchanger, a first water pump and a second plate heat exchanger, the connection relationship among the specific components and the functions are roughly as follows:

It should be understood that the above description is only given of a specific composition and connection manner of the engine exhaust pipe 100 and the engine exhaust waste heat recovery water circuit 200, and the technical solution of the present invention is not limited in any way, and in practical applications, a person skilled in the art may select other components with the same function to replace them, or add corresponding components to complete a thermal management system of an automobile, as required, and the present invention is not limited thereto.

In addition, the thermal management system of the vehicle provided by the embodiment mainly utilizes the heat of the exhaust gas discharged by the engine to cooperate with the heat-source air-conditioning circulation loop 300 to perform heating. Therefore, the thermal management system for the automobile provided by the embodiment is mainly applied to the fuel vehicle with the engine.

Through the above description, it is not difficult to find that, in the automobile thermal management system provided in this embodiment, when the fuel vehicle is in a cold start process or a heating mode, the heat of the exhaust gas discharged by the engine is recovered, and then the heat pump air conditioner circulation loop heats the passenger compartment of the fuel vehicle by utilizing the recovered waste heat and the air heat obtained from the outside air, so that the energy is recycled, and the effects of energy saving and environmental protection are achieved.

In addition, it is worth mentioning that the heat pump air conditioning circulation loop adopted in the embodiment has the characteristic of being capable of sending heat from a low temperature to a high temperature. The heat pump air conditioning cycle may have a theoretical energy efficiency ratio of 3 or more in the cooling mode, and may have a theoretical energy efficiency ratio of about 2 in the heating mode even in winter. Therefore, the automobile thermal management system provided in this embodiment can achieve the effect of high efficiency and energy saving by adopting the heat pump air conditioning circulation loop with the characteristic of high efficiency and energy saving to replace the traditional auxiliary heating mode (PTC + fuel heater) to heat the passenger compartment and the engine cooling system of the fuel vehicle, or only heat the passenger compartment of the fuel vehicle.

In addition, in practical application, the waste heat energy generated by the engine accounts for about 30% of the total energy, most of the waste heat energy is not well utilized, and is wasted. In the embodiment, the exhaust pipeline of the engine is modified, and the waste heat recovery water channel of the engine waste gas is introduced, so that the heat pump air conditioner circulation loop can recycle waste heat energy, and the effects of energy conservation and environmental protection are achieved.

Further, as shown in fig. 2, a second embodiment of the thermal management system of the vehicle according to the present invention is proposed based on the first embodiment, and in this embodiment, the thermal management system of the vehicle further includes an engine water circuit 400.

In addition, it is worth mentioning that in the actual heating process, the coolant temperature of the engine is required to be greater than the preset temperature threshold, and the engine water circuit circulation loop 400 can participate in heating, so that the heating efficiency is improved as much as possible, and the fuel vehicle can be started and used immediately after the heating mode is started, and does not need to wait for a long time. The heat pump air-conditioning circulation circuit 300 may be divided into a first heat pump air-conditioning circulation circuit 301 and a second heat pump air-conditioning circulation circuit 302.

Further, the first heat pump air conditioning circulation loop 301 may be configured to absorb heat from the outside air and the waste heat of the exhaust gas when the temperature of the coolant of the engine is not greater than a preset temperature threshold, for example, 80 ℃, so as to heat the passenger compartment of the fuel vehicle and the engine cooling system, thereby heating the passenger compartment of the fuel vehicle by using the waste heat and the air heat, and greatly accelerating the temperature increase of the coolant of the engine while heating the passenger compartment of the fuel vehicle.

Further, the temperature of the cooling liquid of the engine is rapidly improved, so that the engine can rapidly enter an oil-saving working state. By the mode, the heating speed is increased, the oil consumption of the engine is greatly reduced, and the oil saving efficiency is improved.

Further, when the temperature of the coolant of the engine is greater than the preset temperature threshold, the first heat pump air-conditioning circulation loop 301 may be closed, the second heat pump air-conditioning circulation loop 302 may be started, and only the second heat pump air-conditioning circulation loop 302 absorbs heat from the outside air and exhaust gas waste heat recovery water channel to heat the passenger compartment of the fuel-oil vehicle.

Further, in order to accelerate heating and quickly raise the temperature in the fuel vehicle, when the temperature of the coolant of the engine is greater than the preset temperature threshold, the engine water circuit circulation circuit 400 and the second heat pump air conditioner circulation circuit may be configured to cooperate with each other to jointly heat so as to improve the heating effect for the passenger compartment of the fuel vehicle.

For ease of understanding, the present embodiment provides a specific structure of the first heat pump air-conditioning circulation circuit 301, the second heat pump air-conditioning circulation circuit 302 and the engine water circuit circulation circuit 400, which is roughly as follows:

the first heat pump air conditioning circulation loop 301 includes the following main components: the air conditioner comprises a compressor, a commutator, a first heat exchanger, a third plate heat exchanger, an electronic expansion valve, a second heat exchanger, a second plate heat exchanger, a gas-liquid separator, a wind shield, a first electric control valve, a second electric control valve, a third electric control valve, a fourth electric control valve, a fifth electric control valve and a sixth electric control valve.

The second heat pump air conditioning cycle 302 includes the following main components: the compressor, the commutator, the first heat exchanger, the electronic expansion valve, the second heat exchanger, the second plate heat exchanger, the gas-liquid separator, the wind shield, the first electric control valve, the second electric control valve, the third electric control valve, the fourth electric control valve, the fifth electric control valve and the sixth electric control valve.

The engine water circuit 400 includes the following main components: the second water pump, the thermostat, the third heat exchanger and the fourth heat exchanger.

It should be noted that the same components included in the first heat pump air-conditioning circulation circuit 301 and the second heat pump air-conditioning circulation circuit 302 are specifically the same components in practical application, that is, the components in the first heat pump air-conditioning circulation circuit 301 and the second heat pump air-conditioning circulation circuit 302 are partially overlapped, except that the first heat pump air-conditioning circulation circuit 301 has one more component of a third plate heat exchanger than the second heat pump air-conditioning circulation circuit 302.

Accordingly, the connection relationship between other identical components may be changed.

In addition, in practical applications, the first electric control valve, the second electric control valve, the third electric control valve, the fourth electric control valve, the fifth electric control valve and the sixth electric control valve may be of the same type and the same model, or of different types and different models according to requirements, and the present disclosure is not limited herein.

Correspondingly, the first heat exchanger, the second heat exchanger, the third heat exchanger and the fourth heat exchanger may select heat exchangers of the same type and the same model in practical application, and may also select heat exchangers of different types and different models according to requirements, which is not limited herein.

Correspondingly, the third plate heat exchanger may be the same as or different from the first plate heat exchanger and the second plate heat exchanger in the engine exhaust gas waste heat recovery water circuit 200 in type and model in practical application, and is not limited herein.

Correspondingly, the second water pump may be the same as or different from the first water pump in the engine exhaust gas waste heat recovery water circuit 200 in type and model in practical application, and is not limited herein.

Further, in order to control the water amounts of the first water pump and the second water pump in the thermal management system of the automobile and the air pressures in the second plate heat exchanger and the third plate heat exchanger, the thermal management system of the automobile provided in this embodiment may further include a degassing and water replenishing pipeline.

Specifically, the degassing and water supplementing pipeline generally needs to comprise an expansion kettle, a water supplementing pipeline and a degassing pipeline.

Accordingly, in practical applications, the expansion kettle needs to be connected to the water supply pipeline and the degassing pipeline respectively, so that the water amount of the first water pump and the water amount of the second water pump are controlled by the water supply pipeline, and the air pressure in the second plate heat exchanger and the air pressure in the third heat exchanger are controlled by the degassing pipeline.

In order to facilitate understanding of the specific connection relationship of the automobile thermal management system formed by the above components, the following description is made in conjunction with fig. 3.

For convenience of the following description, the english reference numerals in fig. 3 are explained first.

Specifically, in fig. 3, TPV is an exhaust electric control three-way valve, WP1 is a first water pump, WP2 is a second water pump, PTHE1 is a first plate heat exchanger, PTHE2 is a second plate heat exchanger, PTHE3 is a third plate heat exchanger, HE1 is a first heat exchanger, HE2 is a second heat exchanger, HE3 is a third heat exchanger, HE4 is a fourth heat exchanger, CT is a commutator, CP is a compressor, TW is a wind screen, EK is an expansion pot, T is an economizer, EEV is an electronic expansion valve, F1 is a first fan arranged adjacent to the first heat exchanger, F2 is a second fan arranged adjacent to the second heat exchanger, E1 is a first electric control valve, E2 is a second electric control valve, E3 is a third electric control valve, E4 is a fourth electric control valve, E5 is a fifth electric control valve, and E6 is a sixth electric control valve.

Furthermore, it is worth mentioning that in practical applications, the engine exhaust line 100 also needs to include a catalyst.

Further, the catalyst needs to be connected directly after the engine because the catalyst needs to light off quickly during cold start due to the emission requirements of the vehicle. Therefore, an electrically controlled three-way valve for exhaust gas for controlling the direction of exhaust gas discharged from the engine can be disposed only after the catalyst.

Accordingly, in order to reduce the noise generated during the operation of the engine, a muffler is further disposed at the end of the engine exhaust pipe 100, and the exhaust gas exhausted by the engine can be treated by the exhaust gas output from the first plate heat exchanger PTHE 1.

The connection of the components is described in detail below with reference to fig. 3:

(1) the connection of the engine exhaust line 100 is substantially as follows:

the waste gas of engine gets rid of the mouth with the air inlet of catalyst converter is connected, the gas outlet of catalyst converter with the air inlet of the automatically controlled three-way valve TPV of exhaust is connected, one side gas outlet (the left side gas outlet in fig. 3) of the automatically controlled three-way valve TPV of exhaust directly with the air inlet of silencer is connected, the opposite side gas outlet (the right side gas outlet in fig. 3) of the automatically controlled three-way valve TPV of exhaust with in the engine waste gas waste heat recovery water route 200 the high temperature air inlet of first plate ware PTHE1 is connected, the low temperature gas outlet of first plate ware PTHE1 with the silencer is connected.

(2) The connection of the engine exhaust gas waste heat recovery water circuit 200 is roughly as follows:

an air inlet of the first water pump WP1 is connected with a high-temperature air outlet of the first plate heat exchanger PTHE1, an air outlet of the first water pump WP1 is connected with a high-temperature air inlet of the second plate heat exchanger PTHE2, and a low-temperature air outlet of the second plate heat exchanger PTHE2 is connected with a low-temperature air inlet of the first plate heat exchanger PTHE 1.

(3) The connection of the heat pump air-conditioning circulation circuit 300 is specifically divided into the first heat pump air-conditioning circulation circuit 301 and the second heat pump air-conditioning circulation circuit 302.

(3-1) the connection to the first heat pump air conditioning cycle 301 is substantially as follows:

in THE first heat pump air-conditioning circulation loop 301, an air outlet of THE compressor CP is connected to a first air inlet of THE inverter CT, a first air outlet of THE inverter CT is connected to a first end of THE second electronic control valve E2 and a high-temperature air inlet of THE third plate heat exchanger HE3, a second end of THE second electronic control valve E2 is connected to an air inlet of THE first heat exchanger HE1, an air outlet of THE first heat exchanger HE1 is connected to a first end of THE fifth electronic control valve E5 and a first end of THE sixth electronic control valve E6, a low-temperature air outlet of THE third plate heat exchanger PTHE3 is connected to a first end of THE fourth electronic control valve E4 through THE wind shield TW, a second end of THE fourth electronic control valve E4 and a second end of THE fifth electronic control valve E5 are connected to a first end of THE electronic expansion valve EEV, and a second end of THE electronic expansion valve EEV is connected to a second end of THE sixth electronic control valve E6, An air inlet of the second heat exchanger HE2 is connected with a low-temperature air inlet of the second plate heat exchanger PTHE2, a high-temperature air outlet of the second plate heat exchanger PTHE2 is connected with a first end of the first electric control valve E1, a second end of the first electric control valve E1 and an air outlet of the second heat exchanger HE2 are respectively connected with a second air inlet of the commutator CT, a second air outlet of the commutator CT is connected with an air inlet of the gas-liquid separator, and an air outlet of the gas-liquid separator is connected with an air inlet of the compressor CP.

(3-2) the connection to the second heat pump air conditioning cycle 302 is substantially as follows:

in the second heat pump air-conditioning circulation loop 302, an air outlet of the compressor CP is connected with a first air inlet of the inverter CT, a first air outlet of the inverter CT is connected with a first end of the second electronic control valve E2, a second end of the second electronic control valve E2 is connected with an air inlet of the first heat exchanger HE1, an air outlet of the first heat exchanger HE1 is respectively connected with a first end of the fifth electronic control valve E5 and a first end of the sixth electronic control valve E6, a second end of the fifth electronic control valve E5 is connected with a first end of the electronic expansion valve EEV, a second end of the electronic expansion valve EEV is respectively connected with a second end of the sixth electronic control valve E6, an air inlet of the second heat exchanger HE2 and a low-temperature air inlet of the second plate heat exchanger PTHE2, a high-temperature air outlet of the second plate heat exchanger PTHE2 is connected with a first end of the first valve E1, the second end of the first electric control valve E1 and the air outlet of the second heat exchanger HE2 are respectively connected with a second air inlet of the reverser CT, the second air outlet of the reverser CT is connected with the air inlet of the gas-liquid separator, and the air outlet of the gas-liquid separator is connected with the air inlet of the compressor CP.

(4) The connections to the engine water circuit 400 are generally as follows:

the water outlet of the second water pump WP2 is connected with the water inlet of the engine, the water outlet of the engine is connected with the water inlet of the thermostat T, the first water outlet (the right interface in fig. 3) of the thermostat T is connected with the water inlet of the third heat exchanger HE3, the second water outlet (the upwardly protruding interface in fig. 3) of the thermostat T is connected with the low-temperature water inlet of the third plate heat exchanger PTHE3 and is connected with the water inlet of the fourth heat exchanger HE4 through the high-temperature water outlet of the third plate heat exchanger PTHE3, and the water outlets of the third heat exchanger HE3 and the fourth heat exchanger HE4 are respectively connected with the water inlet of the second water pump WP 2.

(5) The connections for the de-aeration and water replenishment lines are substantially as follows:

note that, in fig. 3, two dotted lines drawn from the left side of the expansion pot EK specifically indicate water supply lines, and these two water supply lines are connected to the first water pump WP1 and the second water pump WP2, respectively. The two dashed lines leading from the right side of the expansion pot EK represent in particular the degassing lines, which are connected to the second plate heat exchanger PTHE2 and the third heat exchanger HE3, respectively.

It should be understood that the above description is only given for the specific connection of the car thermal management system composed of the above-mentioned several specific components, and the technical solution of the present invention is not limited in any way, and in practical applications, those skilled in the art can select appropriate components as needed to make reasonable connection, and there is no limitation here.

As can be easily found from the above description, the vehicle thermal management system provided in this embodiment divides the heat pump air-conditioning circulation loop into the first heat pump air-conditioning circulation loop and the second heat pump air-conditioning circulation loop, and when the passenger compartment of the fuel-oil vehicle needs to be heated, the first heat pump air-conditioning circulation loop or the second heat pump air-conditioning circulation loop is selectively activated to heat according to the temperature of the coolant at the current time of the engine, so that the passenger compartment of the fuel-oil vehicle can be better heated.

In addition, the automobile thermal management system provided in this embodiment, when the temperature of the coolant of the engine is greater than the preset stability threshold, that is, the second heat pump air conditioner circulation loop is required to heat the fuel vehicle, in order to accelerate the heating speed as much as possible, the engine water circuit circulation loop and the second heat pump air conditioner circulation loop are matched to heat together, so that the heating speed is further increased, and the heating effect for the passenger compartment of the fuel vehicle is greatly improved.

Based on the automobile thermal management system, the embodiment of the automobile thermal management method is provided.

Referring to fig. 4, fig. 4 is a flowchart illustrating a first embodiment of a method for thermal management of a vehicle according to the present invention.

In a first embodiment, the method for thermal management of an automobile comprises the following steps:

and step S10, controlling the exhaust gas discharged by the engine to enter the engine exhaust gas waste heat recovery water path when the fuel vehicle is in a cold starting process or a heating mode.

And step S20, recovering the heat of the waste gas by the waste heat recovery water channel of the engine waste gas, and exchanging heat with the heat pump air-conditioning circulation loop.

And step S30, the heat pump air-conditioning circulation loop absorbs heat from an outside air and waste gas waste heat recovery water channel to heat the passenger compartment and the engine cooling system of the fuel vehicle or only heat the passenger compartment of the fuel vehicle.

Specifically, in practical application, the main parts of the engine exhaust pipeline in the embodiment are the exhaust electric control three-way valve, and the main parts of the engine exhaust waste heat recovery water channel are the first plate heat exchanger, the second plate heat exchanger and the first water pump. Therefore, the operation of the engine exhaust pipe in step S10 to control the exhaust gas discharged from the engine to enter the engine exhaust gas waste heat recovery water path when the fuel vehicle is in the cold start process or the heating mode may be adaptively adjusted to the operation of the exhaust electric three-way valve in step S10' of fig. 4 to control the exhaust gas discharged from the engine to enter the first plate heat exchanger through the high-temperature air inlet of the first plate heat exchanger when the fuel vehicle is in the cold start process or the heating mode, that is, the main body for controlling the direction of the exhaust gas discharged from the engine is the exhaust electric three-way valve, and the exhaust gas specifically flows into the first plate heat exchanger.

Accordingly, the operation of "the engine exhaust gas waste heat recovery water channel recovers the heat of the exhaust gas and exchanges heat with the heat pump air conditioning circulation loop" in the step S20 may be specifically subdivided into three sub-steps, which are detailed in the sub-steps S201, S202, and S203 in fig. 4.

Specifically, in substep S201, the first plate heat exchanger recovers heat of the exhaust gas and discharges the exhaust gas through a low-temperature gas outlet.

In sub-step S202, the first water pump transfers the waste heat into the second plate heat exchanger.

In the substep S203, the second plate heat exchanger exchanges heat with the heat pump air conditioning circulation loop.

In addition, it should be understood that the electrically controlled three-way valve is composed of one air inlet and two air outlets due to the exhaust. In addition, in practical application, the exhaust electric control three-way valve can control the air outlet on one side to be opened and the air outlet on the other side to be closed according to requirements.

Still taking the structure of the automobile thermal management system given in fig. 3 as an example, when the fuel vehicle is in a cold start process or a heating mode, the exhaust electrically-controlled three-way valve in this embodiment specifically opens the right gas outlet and closes the left gas outlet, so as to control the exhaust gas exhausted by the engine to enter the first plate heat exchanger through the high-temperature gas inlet of the first plate heat exchanger from the right gas outlet of the exhaust electrically-controlled three-way valve after being catalyzed by the catalyst.

It should be understood that the above is only a specific implementation procedure, and the technical solution of the present invention is not limited in any way, and in practical applications, those skilled in the art can reasonably divide the implementation procedure as needed, and the implementation procedure is not limited herein.

Through the above description, it is easy to find that, in the automobile thermal management method provided in this embodiment, when the fuel-fired vehicle is in a cold start process or a heating mode, the heat of the exhaust gas discharged by the engine is recovered, and then the heat pump air-conditioning circulation loop heats the passenger compartment of the fuel-fired vehicle by using the recovered waste heat and the air heat obtained from the outside air, so that the energy is recycled, and the effects of energy saving and environmental protection are achieved.

In addition, it should be noted that, since the automobile thermal management method provided in this embodiment is applied to any automobile thermal management system of the present invention, technical details that are not described in detail in this embodiment may be referred to the automobile thermal management system provided in any embodiment of the present invention, and details are not described here.

Further, as shown in fig. 6, a second embodiment of the method for thermal management of a vehicle according to the present invention is proposed based on the first embodiment, and in this embodiment, the operation performed in step S30 is specifically detailed according to the temperature of the coolant of the engine, which is detailed in step S30' after adjustment.

For ease of understanding, the following detailed description is made with reference to fig. 6:

step S30', when the temperature of the coolant of the engine is not more than a preset temperature threshold value, the first heat pump air-conditioning circulation loop absorbs heat from an outside air and waste gas waste heat recovery water path to heat a passenger compartment and an engine cooling system of the fuel vehicle; and when the temperature of the cooling liquid of the engine is greater than a preset temperature threshold value, the second heat pump air-conditioning circulation loop absorbs heat from the outside air and the waste gas waste heat recovery water channel to supply heat for the passenger compartment of the fuel vehicle.

Specifically, as can be seen from the specific structural diagram of the thermal management system of the vehicle shown in fig. 3, most of the components in the first heat pump air-conditioning circulation loop and the second heat pump air-conditioning circulation loop are overlapped, that is, the same component participates in the formation of the first heat pump air-conditioning circulation loop and also participates in the formation of the second heat pump air-conditioning circulation loop. Therefore, when the temperature of the coolant of the engine is not greater than a preset temperature threshold value, for example, 80 ℃, in order to ensure that the first heat pump air-conditioning circulation circuit can work normally, the first electronic control valve, the second electronic control valve and the fifth electronic control valve in the first heat pump air-conditioning circulation circuit are required to be opened, the third electronic control valve, the fourth electronic control valve and the sixth electronic control valve are required to be closed, and the wind screen is required to be closed upwards, so that the first heat pump air-conditioning circulation circuit can absorb heat from an outside air and waste gas waste heat recovery water path to heat a passenger compartment and an engine cooling system of the fuel-oil vehicle.

Correspondingly, when the temperature of the coolant of the engine is greater than a preset temperature threshold value, in order to ensure that the second heat pump air-conditioning circulation loop can work normally, the first electronic control valve, the second electronic control valve and the fifth electronic control valve in the second heat pump air-conditioning circulation loop are required to be opened, the third electronic control valve, the fourth electronic control valve and the sixth electronic control valve are required to be closed, and the wind shield is closed upwards, so that the second heat pump air-conditioning circulation loop absorbs heat from an outside air and waste gas waste heat recovery water path to heat a passenger compartment of the fuel vehicle.

In addition, it is worth mentioning that the automobile heat exchange system also comprises an engine water circuit circulation loop in order to accelerate the heating speed as much as possible.

And the main function of the engine water path circulation loop is that when the temperature of the cooling liquid of the engine is greater than a preset stability threshold value, the second heat pump air conditioner circulation loop is matched to heat the fuel vehicle so as to improve the heating effect of a passenger compartment of the fuel vehicle.

Further, in order to control the water amounts of the first water pump and the second water pump in the thermal management system of the automobile and the air pressures in the second plate heat exchanger and the third plate heat exchanger, the thermal management system of the automobile provided in this embodiment further includes a degassing and water replenishing pipeline.

For convenience of description, the operation process given above is specifically an operation mode of the automobile thermal management system when a command output by an air conditioner controller in a fuel vehicle is a heating mode and a coolant temperature of an engine of the fuel vehicle is greater than a preset temperature threshold and is not greater than the preset temperature threshold respectively during a running process of the fuel vehicle.

In addition, in practical application, in the heating mode, the air conditioner controller may further output a defogging instruction, so that when the automobile thermal management system provided in this embodiment receives the defogging instruction in the heating mode, the first electric control valve, the third electric control valve, the fourth electric control valve, the sixth electric control valve and the first water pump are specifically set to be opened, the second electric control valve and the fifth electric control valve are closed, and the windshield is closed upwards, so that the low-temperature and low-pressure liquid refrigerant throttled by the electronic expansion valve is shunted by a part of flow to the first heat exchanger, and then the temperature of the inflow air is reduced by the first heat exchanger, so that a part of vapor in the air is condensed, thereby achieving the effect of reducing the absolute humidity of the air, and further achieving the defogging effect.

In addition, in practical application, the air conditioner controller may also output a ventilation mode command during the driving of the fuel vehicle.

Accordingly, in this mode, the exhaust electric control three-way valve needs to open the left air outlet and close the right air outlet, namely, a direct passage from the catalyst to the muffler is opened, so that the exhaust gas exhausted by the engine does not pass through the first plate heat exchanger but is directly exhausted out of the fuel vehicle.

In addition, in this mode, the clutch of the compressor needs to be disconnected, the first water pump needs to be turned off, and the wind screen needs to be turned down to allow outside air to directly enter the vehicle.

In addition, in practical application, the air conditioner controller may also output a cooling mode command during the driving of the fuel vehicle.

Correspondingly, in this mode, the circulation loop of the operation of the thermal management system of the automobile is specifically as follows: the specific link relationship between the compressor- > the commutator- > the second heat exchanger- > the electronic expansion valve- > the first heat exchanger- > the commutator- > the gas-liquid separator- > the compressor can be known by referring to fig. 3, and details are not repeated here.

In addition, it should be understood that, in order to ensure that the circulation loop can work normally, in practical application, the first electronic control valve, the third electronic control valve, the fourth electronic control valve and the sixth electronic control valve are specifically required to be closed, the wind guard is closed downwards, and the second electronic control valve and the fifth electronic control valve are required to be opened.

Correspondingly, in this mode, the first water pump needs to be closed, and the exhaust cushion three-way valve also needs to open the left air outlet and close the right air outlet, namely, a direct passage from the catalyst to the muffler is opened, so that the exhaust gas discharged by the engine is directly discharged out of the fuel vehicle without passing through the first plate heat exchanger.

In addition, in practical application, the air-conditioning controller may not output any of the above operating modes during the driving of the fuel vehicle.

Therefore, in this case, the first to sixth electronic control valves need to be closed, the first water pump also needs to be closed, and the exhaust cushion three-way valve needs to open the left air outlet and close the right air outlet, i.e., open the direct passage from the catalyst to the muffler, so that the exhaust gas exhausted by the engine is directly exhausted outside the fuel vehicle without passing through the first plate heat exchanger.

It should be understood that the several operating modes given above, and the operating states of the thermal management system of the vehicle in the respective operating modes, are described in terms of the fuel vehicle being driven.

However, in practical applications, when the fuel vehicle is in a starting state but not in a driving state, in order to achieve automatic heating of the fuel vehicle (in this embodiment, the heat of the exhaust gas exhausted by the engine is mainly used to heat the fuel vehicle), it may also be determined whether the temperature of the coolant of the engine is greater than a preset temperature threshold, and if the temperature of the coolant is not greater than the preset temperature threshold, the circulation loop of the operation of the vehicle thermal management system specifically includes: the compressor- > the commutator- > the third plate heat exchanger- > the electronic expansion valve- > the second heat exchanger and the second plate heat exchanger- > the commutator- > the gas-liquid separator- > the compressor.

In addition, it should be understood that, in order to ensure that the circulation loop can work normally, in practical application, the first electronic control valve, the fourth electronic control valve and the fifth electronic control valve are specifically required to be opened, and the second electronic control valve, the third electronic control valve and the sixth electronic control valve are required to be closed.

Through the circulation loop, a low-temperature low-pressure gaseous refrigerant can be changed into a high-temperature high-pressure gaseous state after passing through the compressor, the high-temperature high-pressure gaseous refrigerant passes through the commutator and exchanges heat with low-temperature cooling liquid of the engine in the3 rd plate heat exchanger, the cooling liquid is heated and then changed into a low-temperature high-pressure liquid state, and then the low-temperature low-pressure liquid state is changed into a low-temperature low-pressure liquid state after passing through the electronic expansion valve, and the low-temperature low-pressure liquid state enters the. At this time, the refrigerant in the second heat exchanger absorbs energy from outdoor air, and the refrigerant in the second plate heat exchanger absorbs energy from heat of exhaust gas discharged from the engine. After the conversion, the refrigerant is changed into a low-temperature low-pressure gas state, finally reaches the gas-liquid separator through the commutator, returns to the compressor, and completes the circulation.

In addition, in this mode, the first water pump needs to be opened, the exhaust electric control three-way valve needs to open the right gas outlet and close the left gas outlet, namely, the catalyst is opened to the first plate heat exchanger and then to the passage of the muffler, so that the exhaust gas exhausted by the engine passes through the first plate heat exchanger, and the load of the engine is accelerated in this way, and the temperature of the coolant of the engine can be rapidly raised.

Accordingly, after the coolant of the engine is heated by the circulation circuit, if the temperature of the coolant of the engine reaches a preset temperature threshold, the circulation circuit is closed. And simultaneously, closing the first water pump, controlling the exhaust electric control three-way valve to open a left air outlet and close a right air outlet, namely opening a direct passage from the catalyst to the silencer, so that the waste gas discharged by the engine is directly discharged out of the fuel vehicle without passing through the first plate heat exchanger.

Through the above description, it is not easy to find that, in the vehicle thermal management method provided in this embodiment, when the fuel vehicle needs to be heated, the first heat pump air-conditioning circulation loop or the second heat pump air-conditioning circulation loop in the vehicle thermal management system is selectively started to heat according to the water temperature control at the current time of the engine, so that the fuel vehicle can be better heated.

In addition, according to the automobile thermal management method provided in this embodiment, when the temperature of the coolant of the engine is greater than the preset stability threshold, that is, the second heat pump air conditioner circulation loop is required to heat the fuel vehicle, in order to accelerate the heating speed as much as possible, the engine water circuit circulation loop and the second heat pump air conditioner circulation loop are matched to heat the fuel vehicle together, so that the heating speed is further increased, and the heating function is realized. Similarly, since the vehicle thermal management method provided in this embodiment is applied to any vehicle thermal management system of the present invention, detailed technical details that are not described in this embodiment can be referred to the vehicle thermal management system provided in any embodiment of the present invention, and details are not described here.

It should be noted that, in this document, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or system that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or system. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other like elements in a process, method, article, or system that comprises the element.

The above-mentioned serial numbers of the embodiments of the present invention are merely for description and do not represent the merits of the embodiments.

Through the above description of the embodiments, those skilled in the art will clearly understand that the method of the above embodiments can be implemented by software plus a necessary general hardware platform, and certainly can also be implemented by hardware, but in many cases, the former is a better implementation manner. Based on such understanding, the technical solution of the present invention may be embodied in the form of a software product, which is stored in a storage medium (e.g., ROM/RAM, magnetic disk, optical disk) as described above and includes instructions for enabling a terminal device (e.g., a mobile phone, a computer, a server, an air conditioner, or a network device) to execute the method according to the embodiments of the present invention.

The above description is only a preferred embodiment of the present invention, and not intended to limit the scope of the present invention, and all modifications of equivalent structures and equivalent processes, which are made by using the contents of the present specification and the accompanying drawings, or directly or indirectly applied to other related technical fields, are included in the scope of the present invention.

Claims

1. The automobile thermal management system is characterized by being applied to a fuel vehicle with an engine, and comprising: the system comprises an engine exhaust pipeline, an engine waste gas waste heat recovery water circuit and a heat pump air conditioner circulation loop;

the heat pump air-conditioning circulation loop is used for absorbing heat from an outside air and waste gas waste heat recovery water channel and supplying heat to a passenger compartment and an engine cooling system of the fuel vehicle or only supplying heat to the passenger compartment of the fuel vehicle;

the engine exhaust pipeline comprises an exhaust electric control three-way valve, and the engine exhaust waste heat recovery water path comprises a first plate heat exchanger, a first water pump and a second plate heat exchanger;

2. The system of claim 1, wherein the heat pump air conditioning cycle comprises a first heat pump air conditioning cycle;

3. The system of claim 2, wherein the heat pump air conditioning cycle further comprises a second heat pump air conditioning cycle;

4. The system of claim 3, wherein the automotive thermal management system further comprises an engine water circuit;

5. The automobile heat management method is characterized by being applied to an automobile heat management system, wherein the system is applied to a fuel vehicle with an engine, and the system comprises the following components: the system comprises an engine exhaust pipeline, an engine waste gas waste heat recovery water circuit and a heat pump air conditioner circulation loop;

the automobile heat management method comprises the following steps:

the heat pump air-conditioning circulation loop absorbs heat from an outside air and waste gas waste heat recovery water channel to heat a passenger compartment and an engine cooling system of the fuel vehicle or only heat the passenger compartment of the fuel vehicle;

the engine exhaust pipeline comprises an exhaust electric control three-way valve, the engine waste gas waste heat recovery water path comprises a first plate heat exchanger, a first water pump and a second plate heat exchanger, an air outlet at one side of the exhaust electric control three-way valve is connected with a high-temperature air inlet of the first plate heat exchanger, an air inlet of the first water pump is connected with a high-temperature air outlet of the first plate heat exchanger, an air outlet of the first water pump is connected with a high-temperature air inlet of the second plate heat exchanger, a high-temperature air outlet of the second plate heat exchanger is connected with an air inlet of the heat pump air conditioner circulation loop, and a low-temperature air inlet of the second plate heat exchanger is connected with an air outlet of the heat pump air;

6. The method of claim 5, wherein the heat pump air conditioning cycle comprises a first heat pump air conditioning cycle;

7. The method of claim 6, wherein the heat pump air conditioning cycle further comprises a second heat pump air conditioning cycle;

8. The method of claim 7, wherein the automotive thermal management system further comprises an engine water circuit, the engine water circuit comprises a second water pump, a thermostat, a third heat exchanger and a fourth heat exchanger, a water outlet of the second water pump is connected with a water inlet of the engine, a water outlet of the engine is connected with a water inlet of the thermostat, a first water outlet of the thermostat is connected with a water inlet of the third heat exchanger, a second water outlet of the thermostat is connected with a low-temperature water inlet of the third plate heat exchanger and is connected with a water inlet of the fourth heat exchanger through a high-temperature water outlet of the third plate heat exchanger, and water outlets of the third heat exchanger and the fourth heat exchanger are respectively connected with a water inlet of the second water pump;