CN218084991U

CN218084991U - Air conditioning system for vehicle

Info

Publication number: CN218084991U
Application number: CN202221339965.XU
Authority: CN
Inventors: 赵冬亮; 翟岩岩; 陈留杰
Original assignee: Zhengzhou Kelin Motor Vehicle Air Conditioning Co Ltd
Current assignee: Zhengzhou Kelin Motor Vehicle Air Conditioning Co Ltd
Priority date: 2022-05-31
Filing date: 2022-05-31
Publication date: 2022-12-20
Anticipated expiration: 2032-05-31

Abstract

The utility model provides a vehicle air conditioning system, which comprises an air conditioning circulation pipeline, a battery heat management pipeline and a carriage heating circulation pipeline; the battery heat management pipeline and the air conditioner circulating pipeline are respectively subjected to heat exchange through the first plate heat exchanger and the second plate heat exchanger; and the carriage heating circulating pipeline and the air conditioner circulating pipeline exchange heat through the second plate heat exchanger. The utility model discloses an air conditioning system has installed a plate heat exchanger between press and cross valve, can be used to retrieve the carminative heat of press, rethread cold-producing medium is to battery side or radiator side with heat transfer, can be when air conditioning system operation refrigeration mode, the heat in the preferential use press exhaust satisfies the vehicle subregion demand to the heat, and need not cause whole car extra energy consumption through electric heating or fuel heating, plate heat exchanger's application has increased condenser heat transfer effect simultaneously, whole car efficiency has further been improved.

Description

Air conditioning system for vehicle

Technical Field

The utility model relates to an automobile air conditioning technology field, concretely relates to vehicle air conditioning system.

Background

As a common travel mode, people have higher and higher comfort requirements on passenger cars. The passenger car air conditioning device is used for creating a comfortable environment of a car room, protecting the body health of a driver and passengers, improving the working conditions of the driver and the like, and plays a very important role, so that the quality of the air conditioning performance of the passenger car becomes an important basis for evaluating the comfort of the passenger car. However, due to the fact that the passenger vehicle is large in size, the heat insulation layer is thin, the number of doors and windows is large, the density of passengers is high, distribution of airflow organization is difficult, heat insulation performance is poor, heat and humidity load is large, and balance of temperature and airflow in the vehicle is poor.

The passenger car air conditioner is usually arranged at the top of a passenger car due to structural limitation, and an air supply duct and an air supply outlet of the air conditioner are also arranged at the left side and the right side of the upper part in the passenger car to supply cold and heat to the environment in the passenger car. In addition, due to the national requirements on energy conservation and environmental protection, the proportion of the new energy passenger car is increased more and more, and the air conditioner has the functions of not only supplying cold and heat to the environment in the car but also cooling the battery and managing the heat of the whole car, so that the multifunctional and energy-saving air conditioner becomes a development trend.

The existing passenger car air conditioning unit structure can meet the requirements of customers on air conditioning products to a certain extent, and still has obvious defects at that time:

1. when the size of the whole vehicle is long, especially for some special vehicles such as double-deck vehicles, due to the structural limitation, the installation of air conditioning ducts in partial areas is blocked, and the temperature and airflow regulation in the vehicle is difficult to be uniformly distributed under the condition, especially the position of a cab far away from an air supply outlet of an air conditioner is not beneficial to improving the working environment of a driver;

2. the existing passenger car air conditioner is difficult to completely meet the requirements of cooling and heating at the same time, such as refrigeration in a car, battery heating, heating in the car, battery cooling and the like;

3. when the air conditioner operates in a refrigeration mode, the heat absorbed in the vehicle can only be discharged out of the vehicle, and the heat can only be solved in an electric heating or fuel oil heating mode when the heating requirement exists, but the energy consumption of the whole vehicle can be obviously improved by using the electric heating or fuel oil heating mode;

4. when a plurality of areas or components are heated, the heat demand changes constantly, and the control system can directly meet the heat demand through the switching of the valve, but the control mode can cause the fluctuation of energy to cause the instability of the system.

SUMMERY OF THE UTILITY MODEL

To solve the above problems, an air conditioning system for a vehicle is provided.

The purpose of the utility model is realized with the following mode:

an air conditioning system for a vehicle, the system comprising an air conditioning circulation pipeline, a battery heat management pipeline and a compartment heating circulation pipeline; the battery heat management pipeline and the air conditioner circulating pipeline are respectively subjected to heat exchange through the first plate heat exchanger 6 and the second plate heat exchanger 7; and the compartment heating circulating pipeline and the air conditioner circulating pipeline exchange heat through a second plate heat exchanger 7.

The air conditioner circulating pipeline comprises a compressor 1, an electric proportional three-way valve 2, a first plate type heat exchanger 6, a second plate type heat exchanger 7, a four-way valve 3, an external heat exchanger 4, a first electronic expansion valve 8, a second electronic expansion valve 9, a third electronic expansion valve 10, a single cooler 11, a first one-way valve 15, a second one-way valve 16, an internal heat exchanger 5 and a gas-liquid separator 25; an exhaust port of the compressor 1 is connected to a port A of the electric proportional three-way valve 2 through a pipeline, a port B of the electric proportional three-way valve 2 is connected to a port D of the four-way valve 3 through a pipeline, a port C of the electric proportional three-way valve 2 is connected to a first inlet of the second plate heat exchanger 7, an outlet of the second plate heat exchanger 7 is connected to a port D of the four-way valve 3 through a pipeline, the port C of the four-way valve 3 is connected to one end of the heat exchanger 4 outside the vehicle through a pipeline, the other end of the heat exchanger 4 outside the vehicle is divided into three paths, the first path is sequentially communicated with the third electronic expansion valve 10, the single cooler 11 and the port E of the four-way valve 3, the second path is communicated with the second one-way valve 16, the second electronic expansion valve 9, the first inlet of the first plate heat exchanger 6, the first outlet of the first plate heat exchanger 6 and the gas-liquid separator 25, the third path is sequentially communicated with one end of the first electronic expansion valve 8 and the heat exchanger 5 inside the vehicle, the other end of the heat exchanger 5 is connected with a port E of the four-way valve 3 through a pipeline, a port S of the four-way valve 3 is connected to one end of the gas-liquid separator 25, the other end of the gas-liquid separator 25 is connected to the suction port of the compressor 1, and the suction port of the first one-liquid separator 15 is arranged between the heat exchanger 5 and the second electronic heat exchanger inside the heat exchanger.

The battery heat management pipeline comprises a first circulation loop and a second circulation loop; the first circulation loop comprises a first expansion water tank 22, a first circulation pump 21, a first electric two-way valve 17 and a battery pack 12; a second outlet of the first plate heat exchanger 6 is communicated with an expansion water tank, a first circulating pump 21, a first electric two-way valve 17, a battery pack 12 and a second inlet of the first plate heat exchanger 6 in sequence to form a first circulating loop; the second circulation loop comprises an electric water heater 14, a second expansion water tank 24, a second circulation pump 23, a second electric two-way valve 18, a battery pack 12 and a fourth electric two-way valve 20; and a second outlet of the second plate heat exchanger 7, the electric water heater 14, a second expansion water tank 24, a second circulating pump 23, a second electric two-way valve 18, the battery pack 12, a fourth electric two-way valve 20 and a second inlet of the second plate heat exchanger 7 are sequentially communicated to form a second circulating loop.

The car heating circulating pipeline comprises an electric water heater 14, a second expansion water tank 24, a second circulating pump 23, a third electric two-way valve 19 and a wall-mounted radiator 13; and a second outlet of the second plate heat exchanger 7, the electric water heater 14, the second expansion water tank 24, the second circulating pump 23, the third electric two-way valve 19, the wall-mounted radiator 13 and a second inlet of the second plate heat exchanger 7 are sequentially communicated to form a circulating loop.

An exhaust temperature sensor is arranged at an exhaust port of the compressor 1, an air suction port is provided with an air suction temperature sensor, an outer heat exchanger 4 is provided with an outer plate temperature sensor, an inner heat exchanger 5 is provided with a first inner plate temperature sensor, a single cooler 11 is provided with a second inner plate temperature sensor, a second outlet of the first plate heat exchanger 6 is provided with a second water outlet temperature sensor, a second inlet of the first plate heat exchanger (6) is provided with a first return water temperature sensor, a first water outlet temperature sensor is arranged between the electric water heater 14 and the second expansion water tank 24, and a second inlet of the second plate heat exchanger 7 is provided with a second return water temperature sensor.

The utility model has the advantages that: the utility model discloses a compare with current passenger train air conditioner, increased the application of single cooler, solved special vehicle part region air conditioner wind channel installation and obstructed, the cooling heat supply is difficult to reach, the inhomogeneous problem of temperature and air current regulation distribution in the car.

The waste heat recovery system is integrated, the exhaust heat of the compressor is recovered through secondary heat exchange, the problem that the energy consumption of the whole vehicle is improved due to the fact that only electric heating or fuel oil heating can be adopted when an air conditioner operates for refrigeration is solved, the condensation heat exchange effect is improved through the application, and the energy efficiency of the whole vehicle is further improved.

The utility model discloses a compare with current passenger train air conditioner, have bigger expansibility, can increase or reduce corresponding interface according to the demand in the system, can insert spare parts such as a plurality of single coolers, hanging radiator, defroster, the radiator of marking time, driver room heater and realize the heat management of whole car, satisfy different demands.

The utility model discloses a refrigerate or the mode of heating in system operation, all can provide cold volume or heat to battery and hanging radiator, realize the heat management of all-weather battery and whole car.

Compared with the prior art, the technology has the characteristics of high compatibility, high expansibility and high integration.

Drawings

Fig. 1 is a schematic diagram of the system of the present invention.

Fig. 2 is a schematic view of the refrigeration and single chiller mode of the present invention.

Fig. 3 is a schematic piping diagram of the cooling and battery cooling modes of the present invention.

Fig. 4 is a piping schematic of the cooling and battery heating modes of the invention.

Fig. 5 is a schematic diagram of the pipeline of the cooling and cabin heating modes of the present invention.

Fig. 6 is a schematic diagram of the heating and cooling mode pipeline of the present invention.

Fig. 7 is a schematic diagram of the heating and battery cooling mode of the present invention.

Fig. 8 is a schematic diagram of the heating and battery heating mode of the present invention.

Fig. 9 is a schematic view of the heating and cabin heating mode of the present invention.

Fig. 10 is a schematic diagram of the pipeline in the dehumidification mode of the present invention.

The system comprises a compressor 1, a 2-electric proportional three-way valve, a 3-four-way valve, a 4-external heat exchanger, a 5-internal heat exchanger, a 6-first plate heat exchanger, a 7-second plate heat exchanger, a 8-first electronic expansion valve, a 9-second electronic expansion valve, a 10-third electronic expansion valve, a 11-single-cold device, a 12-battery pack, a 13-wall-mounted radiator, a 14-electric water heater, a 15-first one-way valve, a 16-second one-way valve, a 17-first electric two-way valve, a 18-second electric two-way valve, a 19-third electric two-way valve, a 20-fourth electric two-way valve, a 21-first circulating pump, a 22-first expansion water tank, a 23-second circulating pump, a 24-second expansion water tank and a 25-gas-liquid separator.

Detailed Description

The present invention will be described in further detail with reference to the accompanying drawings and specific embodiments.

It should be noted that the following detailed description is exemplary and is intended to provide further explanation of the disclosure as claimed. Unless defined otherwise, all technical and scientific terms used herein have the same technical meaning as commonly understood by one of ordinary skill in the art to which this application belongs.

A vehicle air conditioning system comprises an air conditioning circulating pipeline, a battery heat management pipeline and a carriage heating circulating pipeline; the battery heat management pipeline and the air conditioner circulating pipeline are respectively subjected to heat exchange through the first plate heat exchanger 6 and the second plate heat exchanger 7; and the compartment heating circulating pipeline and the air conditioner circulating pipeline exchange heat through a second plate heat exchanger 7.

The air conditioner circulating pipeline comprises a compressor 1, an electric proportional three-way valve 2, a first plate type heat exchanger 6, a second plate type heat exchanger 7, a four-way valve 3, an external heat exchanger 4, a first electronic expansion valve 8, a second electronic expansion valve 9, a third electronic expansion valve 10, a single cooler 11, a first one-way valve 15, a second one-way valve 16, an internal heat exchanger 5 and a gas-liquid separator 25; an exhaust port of the compressor 1 is connected to a port A of the electric proportional three-way valve 2 through a pipeline, a port B of the electric proportional three-way valve 2 is connected to a port D of the four-way valve 3 through a pipeline, a port C of the electric proportional three-way valve 2 is connected to a first inlet of the second plate heat exchanger 7, an outlet of the second plate heat exchanger 7 is connected to a port D of the four-way valve 3 through a pipeline, the port C of the four-way valve 3 is connected to one end of the heat exchanger 4 outside the vehicle through a pipeline, the other end of the heat exchanger 4 outside the vehicle is divided into three paths, the first path is sequentially communicated with the third electronic expansion valve 10, the single cooler 11 and the port E of the four-way valve 3, the second path is communicated with the second one-way valve 16, the second electronic expansion valve 9, the first inlet of the first plate heat exchanger 6, the first outlet of the first plate heat exchanger 6 and the gas-liquid separator 25, the third path is sequentially communicated with one end of the first electronic expansion valve 8 and the heat exchanger 5 inside the vehicle, the other end of the heat exchanger 5 is connected to the port E of the four-way valve 3 through a pipeline, a port S of the four-way valve 3 is connected to one end of the gas-liquid separator 25, the other end of the compressor 1 is connected to an air suction port of the compressor, and the air suction port of the compressor 1, and the one-liquid separator 15 is arranged between the one-way valve 5.

The car heating circulating pipeline comprises an electric water heater 14, a second expansion water tank 24, a second circulating pump 23, a third electric two-way valve 19 and a wall-mounted radiator 13; and a second outlet of the second plate heat exchanger 7, the electric water heater 14, a second expansion water tank 24, a second circulating pump 23, a third electric two-way valve 19, the wall-mounted radiator 13 and a second inlet of the second plate heat exchanger 7 are sequentially communicated to form a circulating loop.

An exhaust temperature sensor is arranged at an exhaust port of the compressor 1, an air suction port is provided with an air suction temperature sensor, an outer heat exchanger 4 is provided with an outer plate temperature sensor, an inner heat exchanger 5 is provided with a first inner plate temperature sensor, a single cooler 11 is provided with a second inner plate temperature sensor, a second outlet of the first plate heat exchanger 6 is provided with a second water outlet temperature sensor, a second inlet of the first plate heat exchanger 6 is provided with a first water return temperature sensor, a first water outlet temperature sensor is arranged between the electric water heater 14 and the second expansion water tank 24, and a second inlet of the second plate heat exchanger 7 is provided with a second water return temperature sensor. (the sensor is not embodied on the drawings).

An air conditioning system for a vehicle includes the following operation modes: a refrigeration and single cooler mode, a refrigeration and battery cooling mode, a refrigeration and battery heating mode, a refrigeration and vehicle cabin heating mode, a heating and single cooler mode, a heating and battery cooling mode, a heating and battery heating mode, a heating and vehicle cabin heating mode and a dehumidification mode;

when the air conditioning system is in a refrigeration and single cooler mode or a refrigeration and battery cooling mode, the four-way valve 3 is not electrified, the DC port and the ES port of the four-way valve 3 are communicated, and the AB port of the electric proportional three-way valve 2 is communicated:

the flow direction of the system refrigerant in the refrigeration and single cooler 11 mode sequentially comprises an exhaust port of a compressor 1, a DC port of a four-way valve 3, an external heat exchanger 4, an internal heat exchanger 5 through a first electronic expansion valve 8 on one path, a single cooler 11 through a third electronic expansion valve 10 on the other path, an ES port of the four-way valve 3, a gas-liquid separator 25 and an air suction port of the compressor 1;

the flow direction of the system refrigerant in the refrigeration and battery cooling modes sequentially comprises an exhaust port of the compressor 1, a DC port of the four-way valve 3, an external heat exchanger 4, an ES port from one path of the system refrigerant to the internal heat exchanger 5 through the first electronic expansion valve 8 to the four-way valve 3, and a first plate type heat exchanger 6 from the other path of the system refrigerant to the second electronic expansion valve 9 through the second one-way valve 16, a gas-liquid separator 25 and an air suction port of the compressor 1; after reaching the first plate heat exchanger 6, the refrigerant absorbs heat conducted by the battery pack 12 through a first circulation loop on the battery heat management pipeline, so that the refrigeration and battery cooling functions are realized.

When the air conditioning system is in a refrigeration and battery heating mode or a refrigeration and cabin heating mode, the four-way valve 3 is not electrified, the DC port and the ES port of the four-way valve 3 are communicated, and the AB port and the AC port of the electric proportional three-way valve 2 are simultaneously communicated;

the refrigerant flow directions of the refrigeration and battery heating mode system are as follows in sequence: an air outlet of the compressor 1, an AB port of the electric proportional three-way valve 2, an AC port of the electric proportional three-way valve 2, a DC port of the four-way valve 3, a heat exchanger 4 outside the vehicle, a first electronic expansion valve 8, a heat exchanger 5 inside the vehicle, an ES port of the four-way valve 3, a gas-liquid separator 25 and an air suction port of the compressor 1; the heat in the exhaust gas of the compressor 1 is recovered through the second plate heat exchanger 7, and the electric water heater 14 in the second circulation loop on the battery heat management pipeline is used for heating, so that the water temperature circulated by the battery pack 12 is raised to the target water temperature, and the battery heating is realized;

the refrigerant flow directions of the refrigeration and cabin heating mode system are as follows in sequence: an air outlet of the compressor 1, an AB port of the electric proportional three-way valve 2, an AC port of the electric proportional three-way valve 2, a DC port of the four-way valve 3, a heat exchanger 4 outside the vehicle, a first electronic expansion valve 8, a heat exchanger 5 inside the vehicle, an ES port of the four-way valve 3, a gas-liquid separator 25 and an air suction port of the compressor 1; the heat in the exhaust gas of the compressor 1 is recovered by the second plate heat exchanger 7 and heated by the electric water heater 14 in the car heating circulation line, so that the heating side water temperature rises to the target water temperature to supply heat to the wall-mounted radiator 13.

When the air conditioning system is in a heating and single cooler mode or a heating and battery cooling mode, the four-way valve 3 is electrified, the DE port and the CS port of the four-way valve 3 are communicated, and the AB port of the electric proportional three-way valve 2 is communicated;

the refrigerant flow directions of the heating and single cooler mode system are as follows in sequence: an exhaust port of the compressor 1, a DE port of the four-way valve 3, one path of the refrigerant passing through the heat exchanger 5 in the vehicle to the first electronic expansion valve 8, and the other path of the refrigerant passing through the single cooler 11 to the third electronic expansion valve 10, the heat exchanger 4 outside the vehicle, a CS port of the four-way valve 3, a gas-liquid separator 25 and an air suction port of the compressor 1;

the refrigerant flow directions of the heating and battery cooling mode system are as follows in sequence: the air outlet of the compressor 1, the DE port of the four-way valve 3, the heat exchanger 5 in the automobile, the CS port from the heat exchanger 4 outside the automobile to the four-way valve 3 through the first electronic expansion valve 8, the CS port from the heat exchanger 4 outside the automobile to the four-way valve 3 through the first one-way valve 15 to the second electronic expansion valve 9, the first plate heat exchanger 6, the gas-liquid separator 25 and the air suction port of the compressor 1 are arranged on the other path, and after the refrigerant reaches the first plate heat exchanger 6, the heat transferred by the battery pack 12 through the first circulation loop on the battery heat management pipeline is absorbed, so that the battery cooling function is realized.

When the air conditioning system is in a heating and battery heating mode or a heating and cabin heating mode, the four-way valve 3 is electrified, the DE port and the CS port are communicated, and the AB port and the AC port of the electric proportional three-way valve 2 are simultaneously communicated;

the refrigerant flow directions of the heating and battery heating mode system are as follows in sequence: an air outlet of the compressor 1, an AB port of the electric proportional three-way valve 2, an AC port of the electric proportional three-way valve 2, a DE port of the four-way valve 3, an in-vehicle heat exchanger 5, a first electronic expansion valve 8, an out-vehicle heat exchanger 4, a CS port of the four-way valve 3, a gas-liquid separator 25 and an air suction port of the compressor 1; the heat in the exhaust gas of the compressor 1 is recovered through the second plate heat exchanger 7, and the electric water heater 14 in the second circulation loop on the battery heat management pipeline is used for heating, so that the water temperature circulated by the battery pack 12 is increased to the target water temperature, and the battery heating is realized;

the refrigerant flow directions of the heating and cabin heating mode system are as follows in sequence: the exhaust port of the compressor 1, the port AB of the electric proportional three-way valve 2, the port AC of the electric proportional three-way valve 2, the port DE of the four-way valve 3, the heat exchanger 5 in the vehicle, the first electronic expansion valve 8, the heat exchanger 4 outside the vehicle, the port CS of the four-way valve 3, the gas-liquid separator 25 and the air suction port of the compressor 1 are recovered through the second plate heat exchanger 7, heat in exhaust gas of the compressor 1 and heating of an electric water heater 14 in a heating circulation pipeline of the carriage are recovered, so that water on the heating side is heated to a target water temperature, and heat is supplied to the wall-mounted radiator 13.

When the air conditioning system is in a dehumidification mode, the four-way valve 3 is not electrified, the DC port and the ES port of the four-way valve 3 are communicated, the AB port and the AC port of the electric proportional three-way valve 2 are simultaneously communicated, and the third electric two-way valve 19 is opened; the flow direction of the system refrigerant is as follows in sequence: an air outlet of the compressor 1, an AB port of the electric proportional three-way valve 2, an AC port of the electric proportional three-way valve 2, a second plate heat exchanger 7, a DC port of the four-way valve 3, an external heat exchanger 4, an internal heat exchanger 5 through a first electronic expansion valve 8, a single cooler 11 through a third electronic expansion valve 10, an ES port of the four-way valve 3, a gas-liquid separator 25 and an air suction port of the compressor 1; the heat in the exhaust gas of the compressor 1 is recovered by the second plate heat exchanger 7 and heated by the electric water heater 14 in the car heating circulation line, so that the heating side water temperature rises to the target water temperature to supply heat to the wall-mounted radiator 13.

Fig. 1 is a system schematic diagram of a multifunctional one-driving-four integrated vehicle air conditioning system and a control method, the system diagram is a single-press system, and main components of the system include a compressor, a gas-liquid separator, two plate heat exchangers, a four-way valve, three electronic expansion valves, an electric proportional three-way valve, two one-way valves, an external heat exchanger, an internal heat exchanger, a single cooler, two circulating water pumps, two expansion water tanks, an electric water heater, a wall-mounted radiator and four electric two-way valves. The component positions are shown, and the following are several modes that exist for the system to operate:

1. cooling + single cooler mode: in this mode, the four-way valve 3 is not energized (D port → C port, E port → S port, etc.), the port a → B port of the electric proportional three-way valve 2 is connected, the system controller collects the temperature t1 inside the vehicle, the temperature t2 outside the vehicle, and the set temperature t3 to obtain the initial rotation speed R of the compressor and the rotation speed F of the fan, and then the air conditioning system automatically adjusts the rotation speed R of the compressor, the rotation speed F of the fan, the opening K1 of the electronic expansion valve 1, and adjusts the temperature t1= the set temperature t3 inside the vehicle by collecting the temperature of the inner panel, the temperature of the outer panel, the exhaust temperature, and the suction temperature. Meanwhile, the system controller collects the temperature t1' of the cab, sets the temperature t3' and controls the opening K3 of the electronic expansion valve 3 to meet the temperature requirements of the cab or other areas, and the set temperature t3' can be different from the set temperature t3 to realize independent management. The system refrigerant flow direction is as shown in fig. 2: the compressor 1 (exhaust port) → the four-way valve 3 (D port → C port) → the exterior heat exchanger 4 → [ first electronic expansion valve 8 → interior heat exchanger 5] and [ third electronic expansion valve 10 → single cold device 11] → the four-way valve 3 (E port → S port) → the gas-liquid separator 25 → the compressor 1 (intake port).

2. Cooling + battery cooling mode: in this mode, the four-way valve 3 is not energized (port D → port C, port E → port S are energized), the port a → port B of the electric proportional three-way valve 2 is energized, the first electric two-way valve 17 is opened, the second electric two-way valve 18 is closed, the third electric two-way valve 19 is closed, and the fourth electric two-way valve 20 is closed, the system controller acquires the temperature t1 in the vehicle, the temperature t2 outside the vehicle, the set temperature t3, and the vehicle BMS feedback signal after the vehicle is started, automatically obtains the initial rotation speed R of the compressor and the rotation speed F of the fan, and automatically acquires the temperature of the inner disc, the temperature of the outer disc, the exhaust temperature, and the suction temperature, and automatically adjusts the rotation speed R of the compressor, the rotation speed F of the fan and the opening K1 of the electronic expansion valve 1, and adjusts the temperature t1= the set temperature t3 in the vehicle. And the system controller simultaneously controls the first circulating pump 21 to be started, and the return water temperature tw1 and the outlet water temperature tw2 of the first plate heat exchanger 6 are combined with the refrigerant system parameters to obtain a target opening degree K2 of the second electronic expansion valve 9 through adjustment, so that the water temperature on the battery side is reduced to the target water temperature, and the battery is cooled. The system refrigerant flow direction is as shown in fig. 3: the compressor 1 (exhaust port) → the four-way valve 3 (D port → C port) → the exterior heat exchanger 4 → [ first electronic expansion valve 8 → the interior heat exchanger 5 → the four-way valve 3 (E port → S port) ], and [ second check valve 16 → second electronic expansion valve 9 → first plate heat exchanger 6] → the gas-liquid separator 25 → the compressor 1 (suction port).

3. Cooling + battery heating mode: in this mode, the four-way valve 3 is not energized (port D → port C, port E → port S are energized), the port a → port B, port a → port C of the electric proportional three-way valve 2 are energized simultaneously, the first electric two-way valve 17 is closed, the second electric two-way valve 18 is open, the third electric two-way valve 19 is closed, the fourth electric two-way valve 20 is open, after the system is turned on, the system controller acquires the temperature t1 in the vehicle, the temperature t2 outside the vehicle, and the set temperature t3, the system automatically obtains the initial rotational speed R of the compressor and the rotational speed F of the fan, and then automatically adjusts the rotational speed R of the compressor, the rotational speed F of the fan and the opening K1 of the first electronic expansion valve 8 by acquiring the temperature of the inner panel, the exhaust temperature and the suction temperature, and the system automatically adjusts the rotational speed R of the compressor, the rotational speed F of the fan and the opening K1 of the first electronic expansion valve 8, and adjusts the temperature t1= the set temperature t3 in the vehicle. The system controller simultaneously controls the second circulating pump 23 to be started, the return water temperature tw3 and the outlet water temperature tw4 of the second plate heat exchanger 7 are combined with the refrigerant system parameters, the opening degrees of the port A → the port B and the port A → the port C of the electric proportional three-way valve 2 are obtained through adjustment, heat in exhaust gas of the press is recovered through the second plate heat exchanger 7, and the electric water heater 14 is used for heating, so that the temperature of water on the side of the battery is raised to a target water temperature, and heat is supplied to the battery. The system refrigerant flow direction is as shown in fig. 4: the compressor 1 (exhaust port) → [ electric proportional three-way valve 2 (port a → port B) ], and [ electric proportional three-way valve 2 (port a → port C) → second plate heat exchanger 7] → four-way valve 3 (port D → port C) → exterior heat exchanger 4 → first electronic expansion valve 8 → interior heat exchanger 5 → four-way valve 3 (port E → port S) → gas-liquid separator 25 → compressor 1 (intake port).

4. Refrigeration + cabin heating mode: in this mode, the four-way valve 3 is not energized (D port → C port, E port → S port is energized), the port a → port B, port a → C of the electric proportional three-way valve 2 is energized at the same time, the first electric two-way valve 17 is closed, the second electric two-way valve 18 is closed, the third electric two-way valve 19 is open, and the fourth electric two-way valve 20 is closed, after the start-up, the system controller collects the temperature t1 inside the vehicle and the temperature t2 outside the vehicle, sets the temperature t3, the system obtains the initial rotation speed R of the compressor and the rotation speed F of the fan, and then automatically adjusts the rotation speed R of the compressor, the rotation speed F of the fan and the opening K1 of the first electronic expansion valve 8 by collecting the temperature of the inner panel, the exhaust temperature and the suction temperature, and adjusts the temperature t1= set temperature t3 inside the vehicle. The system controller simultaneously controls the second circulating pump 23 to be started, the return water temperature tw3 and the outlet water temperature tw4 of the second plate heat exchanger 7 are combined outside the refrigerant system parameters, the opening degrees of the port A → the port B and the port A → the port C of the electric proportional three-way valve 2 are obtained through adjustment, heat in exhaust gas of the compressor 1 is recovered through the second plate heat exchanger 7, and the electric water heater 14 is used for heating, so that heating side water is heated to a target water temperature, and heat is supplied to the wall-mounted radiator 13. The system refrigerant flow direction is as shown in fig. 5: the compressor 1 (exhaust port) → [ electric proportional three-way valve 2 (port a → port B) ], and [ electric proportional three-way valve 2 (port a → port C) → second plate heat exchanger 7] → four-way valve 3 (port D → port C) → exterior heat exchanger 4 → first electronic expansion valve 8 → interior heat exchanger 5 → four-way valve 3 (port E → port S) → gas-liquid separator 25 → compressor 1 (intake port).

5. Heating + single cooler mode: in the mode, the four-way valve 3 is electrified (opening D → opening E, opening C → opening S) and the opening A → opening B of the electric proportional three-way valve 2 are communicated, after the system is started, the system controller collects the temperature t1 in the vehicle, the temperature t2 outside the vehicle and the set temperature t3, the initial rotating speed R of the compressor and the rotating speed F of the fan are obtained, and then the rotating speed R of the compressor, the rotating speed F of the fan and the opening K1 of the first electronic expansion valve 8 are automatically adjusted by the system through collecting the temperature of the inner disc, the temperature of the outer disc, the exhaust temperature and the suction temperature, so that the temperature t1 in the vehicle = the set temperature t3. Meanwhile, the system controller collects the temperature t1' of the cab, sets the temperature t3' and controls the opening K3 of the third electronic expansion valve 10 to meet the temperature requirement of the cab or other areas, and the set temperature t3' can be different from the set temperature t3 to realize independent management. The system refrigerant flow direction is as shown in fig. 6: the compressor 1 (exhaust port) → the four-way valve 3 (D port → E port) → [ the interior heat exchanger 5 → the first electronic expansion valve 8] and [ the single cooler 11 → the third electronic expansion valve 10] → the exterior heat exchanger 4 → the four-way valve 3 (C port → S port) → the gas-liquid separator 25 → the compressor 1 (intake port).

6. Heating + battery cooling mode: in this mode, the four-way valve 3 is energized (D port → E port, C port → S port, etc.), the port a → B of the electric proportional three-way valve 2 is simultaneously turned on, the first electric two-way valve 17 is turned on, the second electric two-way valve 18 is turned off, the third electric two-way valve 19 is turned off, and the fourth electric two-way valve 20 is turned off, and after the start-up, the system controller collects the temperature t1 inside the vehicle, the temperature t2 outside the vehicle, the set temperature t3, and the vehicle BMS feedback signal to automatically obtain the initial compressor rotation speed R and the fan rotation speed F, and then collects the temperature of the inner disc, the temperature of the outer disc, the exhaust temperature, and the suction temperature, and the system automatically adjusts the compressor rotation speed R, the fan rotation speed F and the opening K1 of the first electronic expansion valve 8, and adjusts the temperature t1= set temperature t3 inside the vehicle. The system controller simultaneously controls the first circulating pump 21 to be started, the return water temperature tw1 and the outlet water temperature tw2 of the first plate heat exchanger 6 are combined outside the refrigerant system parameters, the target opening degree K2 of the second electronic expansion valve 9 is obtained through adjustment, the water temperature on the battery side is reduced to the target water temperature, and the battery is cooled. The system refrigerant flow direction is as shown in fig. 7: the compressor 1 (exhaust port) → the four-way valve 3 (D port → E port) → the interior heat exchanger 5 → [ first electronic expansion valve 8 → the exterior heat exchanger 4 → the four-way valve 3 (C port → S port) ], and [ first check valve 15 → second electronic expansion valve 9 → first plate heat exchanger 6] → the gas-liquid separator 25 → the compressor 1 (suction port).

7. Heating + battery heating mode: in this mode, the four-way valve 3 is energized (port D → port E, port C → port S are connected), the port a → port B, port a → port C of the electric proportional three-way valve 2 are simultaneously connected, the first electric two-way valve 17 is closed, the second electric two-way valve 18 is open, the third electric two-way valve 19 is closed, and the fourth electric two-way valve 20 is open, after the three-way valve is turned on, the system controller collects the temperature t1 in the vehicle, the temperature t2 outside the vehicle, and the set temperature t3, automatically obtains the initial rotation speed R of the compressor and the rotation speed F of the fan, and then collects the temperature of the inner panel, the temperature of the outer panel, the exhaust temperature, and the suction temperature, and the system automatically adjusts the rotation speed R of the compressor, the rotation speed F of the fan and the opening K1 of the first electronic expansion valve 8, and adjusts the temperature t1= the set temperature t3 in the vehicle. The system controller simultaneously controls the second circulating pump 23 to be started, the return water temperature tw3 and the outlet water temperature tw4 of the second plate heat exchanger 7 are combined outside the refrigerant system parameters, the opening degrees of the port A → the port B and the port A → the port C of the electric proportional three-way valve 2 are obtained through adjustment, heat in exhaust gas of the compressor 1 is recovered through the second plate heat exchanger 7, and the electric water heater 14 is used for heating, so that water on the side of the battery is heated to a target water temperature, and heat is supplied to the battery. The system refrigerant flow direction is as shown in fig. 8: the compressor 1 (exhaust port) → [ electric proportional three-way valve 2 (port a → port B) ], and [ electric proportional three-way valve 2 (port a → port C) → second plate heat exchanger 7] → four-way valve 3 (port D → port E) → interior heat exchanger 5 → first electronic expansion valve 8 → exterior heat exchanger 4 → four-way valve 3 (port C → port S) → gas-liquid separator 25 → compressor 1 (intake port).

8. Heating and cabin heating mode: in this mode, the four-way valve is energized (port D → port E, port C → port S), port a → port B, port a → port C of the electric proportional three-way valve 2 are simultaneously energized, the first electric two-way valve 17 is closed, the second electric two-way valve 18 is closed, the third electric two-way valve 19 is open, the fourth electric two-way valve 20 is closed, the system controller acquires the temperature t1 in the vehicle, the temperature t2 outside the vehicle, and the set temperature t3, to obtain the initial rotation speed R of the compressor and the rotation speed F of the fan, and then the system automatically adjusts the rotation speed R of the compressor, the rotation speed F of the fan and the opening K1 of the electronic expansion valve 1 by acquiring the temperature of the inner disk, the temperature of the exhaust gas, and the temperature of the suction gas, and adjusts the temperature t1= set temperature t3 in the vehicle. The system controller simultaneously controls the second circulating pump 23 to be started, the return water temperature tw3 and the outlet water temperature tw4 of the second plate heat exchanger 7 are combined outside the refrigerant system parameters, the opening degrees of the port A → the port B and the port A → the port C of the electric proportional three-way valve 2 are obtained through adjustment, heat in exhaust gas of the compressor is recovered through the second plate heat exchanger 7, and the electric water heater 14 is used for heating, so that heating side water is heated to a target water temperature, and heat is supplied to the wall-mounted radiator 13. The system refrigerant flow direction is as shown in fig. 9: the compressor 1 (discharge port) → [ electric proportional three-way valve 2 (a port → B port) ], and [ electric proportional three-way valve 2 (a port → C port) → second plate heat exchanger 7] → four-way valve 3 (D port → E port) → interior heat exchanger 5 → first electronic expansion valve 8 → exterior heat exchanger 4 → four-way valve 3 (C port → S port) → gas-liquid separator 25 → compressor 1 (suction port).

9. In the dehumidification mode, the four-way valve is not electrified (opening D → opening C, opening E → opening S), the electric proportional three-way valve is simultaneously connected with opening A → opening B, opening A → opening C, the first electric two-way valve 17 is closed, the second electric two-way valve 18 is closed, the third electric two-way valve 19 is opened, the fourth electric two-way valve 20 is closed, after the four-way valve is started, the system controller collects the temperature t1 in the vehicle, the temperature t2 outside the vehicle, the humidity RH1 in the vehicle, the set temperature t3 and the set humidity RH2 to obtain the initial rotating speed R 'of the compressor and the rotating speed F' of the fan, and then collects the temperature t1 of the inner disc, the temperature t2 outside the vehicle, the temperature RH1 in the vehicle, the set temperature RH 3 of the vehicle and the temperature RH2 of the fan, the system corrects the operation parameters through a PID algorithm, and automatically adjusts the rotating speed R of the compressor, the rotating speed F of the fan, the opening K1 of the first electronic expansion valve 8 and the opening K3 of the third electronic expansion valve 10, and the humidity RH1= the set temperature RH2 in the vehicle. If the temperature in the vehicle is lower than the set temperature, the system controller simultaneously controls the second circulating pump 23 to be started, the opening degrees of the opening → the opening B and the opening → the opening C of the electric proportional three-way valve 2 are obtained by combining the return water temperature tw3 and the outlet water temperature tw4 of the second plate heat exchanger 7 outside the refrigerant system parameters, the heat in the exhaust gas of the compressor is recovered through the second plate heat exchanger 7, and the electric water heater 14 is used for heating, so that the temperature of the water on the heating side is raised to the target water temperature, the wall-mounted radiator 13 is supplied with heat, and the temperature t1 in the vehicle is adjusted to be = the set temperature t3. The system refrigerant flow direction is as shown in fig. 10: the compressor 1 (exhaust port) → [ electric proportional three-way valve 2 (port a → port B) ], and [ electric proportional three-way valve 2 (port a → port C) ] → second plate heat exchanger 7] → four-way valve 3 (port D → port C) → exterior heat exchanger 4 → [ first electronic expansion valve 8 → interior heat exchanger 5], and [ third electronic expansion valve 10 → intercooler 11] → four-way valve 3 (port E → port) → gas-liquid separator 25 → compressor 1 (intake port).

According to the air conditioning system, the plate type heat exchanger is arranged between the press and the four-way valve, the heat of the exhaust air of the press can be recovered, and then the heat is transmitted to the battery side or the radiator side through the refrigerant, so that when the air conditioning system operates in a refrigeration mode, the heat in the exhaust air of the press can be preferentially used to meet the heat requirement of partial areas of a vehicle, the extra energy consumption of the whole vehicle caused by electric heating or fuel oil heating is not needed, meanwhile, the heat exchange effect of the condenser is increased by applying the plate type heat exchanger, and the energy efficiency of the whole vehicle is further improved.

The air conditioning system is arranged between the press and the four-way valve, the application of the electric proportional three-way valve is increased, the valve can accurately adjust the flow of the refrigerant entering the plate heat exchanger according to the energy requirement, and the temperature of the control plate is changed to the temperature of the outlet water, so that the heat supply of the whole vehicle is stable and reliable.

The air conditioning system is arranged between the evaporation side and the condensation side, the application of the single cooler is added, the problem that the air duct of a vehicle with a long or special structure is blocked when the cold quantity or the heat quantity is difficult to deliver is solved, the single cooler independently supplies cold and heat to the areas, and the number of the single coolers can be increased according to the requirement so as to meet different functional requirements.

While the preferred embodiments of the present invention have been described, it will be understood by those skilled in the art that various changes and modifications may be made without departing from the general inventive concept, and it is intended to cover all such changes and modifications as fall within the true spirit and scope of the invention.

Claims

1. An air conditioning system for a vehicle, characterized in that: the system comprises an air conditioner circulating pipeline, a battery heat management pipeline and a carriage heating circulating pipeline; the battery heat management pipeline and the air conditioner circulating pipeline are respectively subjected to heat exchange through a first plate heat exchanger (6) and a second plate heat exchanger (7); and the compartment heating circulating pipeline and the air conditioner circulating pipeline exchange heat through a second plate type heat exchanger (7).

2. The vehicular air conditioning system according to claim 1, characterized in that: the air conditioner circulating pipeline comprises a compressor (1), an electric proportional three-way valve (2), a first plate type heat exchanger (6), a second plate type heat exchanger (7), a four-way valve (3), an external heat exchanger (4), a first electronic expansion valve (8), a second electronic expansion valve (9), a third electronic expansion valve (10), a single cooler (11), a first one-way valve (15), a second one-way valve (16), an internal heat exchanger (5) and a gas-liquid separator (25); the exhaust port of the compressor (1) is connected to the port A of the electric proportional three-way valve (2) through a pipeline, the port B of the electric proportional three-way valve (2) is connected to the port D of the four-way valve (3) through a pipeline, the port C of the electric proportional three-way valve (2) is connected to the first inlet of the second plate heat exchanger (7), the outlet of the second plate heat exchanger (7) is connected to the port D of the four-way valve (3) through a pipeline, the port C of the four-way valve (3) is connected to one end of the heat exchanger (4) outside the vehicle through a pipeline, the other end of the heat exchanger (4) outside the vehicle is divided into three paths, the first path is sequentially communicated with the third electronic expansion valve (10), the single cooler (11) and the port E of the four-way valve (3), the second path is communicated with the second one-way valve (16), the second electronic expansion valve (9), the first inlet of the first plate heat exchanger (6), the first outlet of the first plate heat exchanger (6) and the gas-liquid separator (25), the third path is sequentially communicated with the first electronic expansion valve (8) and one end of the heat exchanger (5) inside the vehicle, the other end of the four-way valve (3) is connected with the port E of the heat exchanger inside the four-way valve (3), an S port of the four-way valve (3) is connected to one end of a gas-liquid separator (25), the other end of the gas-liquid separator (25) is connected to an air suction port of the compressor (1), and a first one-way valve (15) is further arranged between the heat exchanger (5) in the vehicle and the second electronic expansion valve.

3. The vehicular air conditioning system according to claim 2, characterized in that: the battery heat management pipeline comprises a first circulation loop and a second circulation loop; the first circulation loop comprises a first expansion water tank (22), a first circulation pump (21), a first electric two-way valve (17) and a battery pack (12); a second outlet of the first plate type heat exchanger (6) is communicated with an expansion water tank, a first circulating pump (21), a first electric two-way valve (17), a battery pack (12) and a second inlet of the first plate type heat exchanger (6) in sequence to form a first circulating loop; the second circulation loop comprises an electric water heater (14), a second expansion water tank (24), a second circulation pump (23), a second electric two-way valve (18), a battery pack (12) and a fourth electric two-way valve (20); and a second outlet of the second plate heat exchanger (7), the electric water heater (14), a second expansion water tank (24), a second circulating pump (23), a second electric two-way valve (18), the battery pack (12), a fourth electric two-way valve (20) and a second inlet of the second plate heat exchanger (7) are sequentially communicated to form a second circulating loop.

4. The vehicular air conditioning system according to claim 2, characterized in that: the car heating circulating pipeline comprises an electric water heater (14), a second expansion water tank (24), a second circulating pump (23), a third electric two-way valve (19) and a wall-mounted radiator (13); and a second outlet of the second plate heat exchanger (7), the electric water heater (14), a second expansion water tank (24), a second circulating pump (23), a third electric two-way valve (19), a wall-mounted radiator (13) and a second inlet of the second plate heat exchanger (7) are communicated in sequence to form a circulating loop.

5. The vehicular air conditioning system according to claim 2, characterized in that: an exhaust temperature sensor is arranged at an exhaust port of the compressor (1), an air suction port is provided with an air suction temperature sensor, an outer heat exchanger (4) is provided with an outer plate temperature sensor, a first inner plate temperature sensor is arranged on an inner heat exchanger (5) of the compressor, a second inner plate temperature sensor is arranged on a single cooler (11), a second outlet of the first plate heat exchanger (6) is provided with a second water outlet temperature sensor, a second inlet of the first plate heat exchanger (6) is provided with a first water return temperature sensor, a first water outlet temperature sensor is arranged between the electric water heater (14) and the second expansion water tank (24), and a second inlet of the second plate heat exchanger (7) is provided with a second water return temperature sensor.