CN215153794U

CN215153794U - Heat pump air conditioning system and vehicle

Info

Publication number: CN215153794U
Application number: CN202121670778.5U
Authority: CN
Inventors: 肖军
Original assignee: WM Smart Mobility Shanghai Co Ltd
Current assignee: WM Smart Mobility Shanghai Co Ltd
Priority date: 2021-07-21
Filing date: 2021-07-21
Publication date: 2021-12-14
Anticipated expiration: 2031-07-21

Abstract

The application discloses a heat pump air conditioning system and a vehicle, comprising a first heat exchanger, a second heat exchanger, a compressor, a gas-liquid separator, a first expansion valve, a battery water pump and a cooler, wherein the second heat exchanger comprises a left core body and a right core body, the cooler is provided with a first liquid inlet and a first liquid outlet, the right core body is provided with a second liquid inlet and a second liquid outlet, the first liquid outlet is connected with the second liquid inlet through the battery water pump, the left core body is provided with a third liquid inlet and a third liquid outlet, the first heat exchanger is provided with a first liquid inlet end and a first liquid outlet end, the compressor is provided with a second liquid inlet end and a second liquid outlet end, the gas-liquid separator is provided with a third liquid inlet end and a third liquid outlet end, the refrigerant flows back into the left core through a third liquid outlet, a third liquid inlet end, a third liquid outlet end, a second liquid inlet end, a second liquid outlet end, a first liquid inlet end, a first liquid outlet end, a first expansion valve and a third liquid inlet. The application can improve the integration degree, and is favorable for integrated management of heat energy and optimization of energy consumption.

Description

Heat pump air conditioning system and vehicle

Technical Field

The application relates to the technical field of vehicles, in particular to a heat pump air conditioning system and a vehicle.

Background

At present, a heat pump air-conditioning system of a new energy automobile mainly comprises a direct heat pump and an indirect heat pump, and the indirect heat pump air-conditioning system can achieve the aim of reducing the energy consumption of an air conditioner and can reduce the development workload of system parts as much as possible on the basis of reducing the system cost. The inventor discovers that indirect heat pump air conditioning systems of most new energy vehicles are relatively independent, the integration level is relatively low, integrated overall management is difficult to carry out with other systems, and optimization of energy consumption is not facilitated.

SUMMERY OF THE UTILITY MODEL

In view of the above, the present application provides a heat pump air conditioning system and a vehicle to solve the above technical problems.

The application provides a heat pump air conditioning system, it includes: the battery pack assembly comprises a first heat exchanger, a second heat exchanger, a compressor, a gas-liquid separator, a first expansion valve, a battery water pump and a cooler for cooling the battery pack assembly, wherein the second heat exchanger comprises a left core body and a right core body, the left core body and the right core body exchange heat, the cooler is provided with a first inlet and a first liquid outlet, the right core body is provided with a second inlet and a second liquid outlet, the first liquid outlet is connected with the second inlet through the battery water pump, the second liquid outlet is connected with the first inlet, the left core body is provided with a third liquid inlet and a third liquid outlet, the first heat exchanger is provided with a first liquid inlet end and a first liquid outlet end, the compressor is provided with a second liquid inlet end and a second liquid outlet end, the gas-liquid separator is provided with a third liquid inlet end and a third liquid outlet end, the first expansion valve is arranged on a connecting pipeline of the first liquid outlet end and the third liquid inlet end, refrigerant in the left core flows back to left core in through third liquid outlet, third feed liquor end, third liquid outlet end, second feed liquor end, second liquid outlet end, first feed liquor end, first liquid outlet end, first expansion valve, third feed liquor mouth in proper order, not only can improve the degree of integrating, help the integrated management of heat energy, but also the heat that the recoverable battery package assembly produced, help optimizing the energy consumption, improve new energy automobile's duration, and simple structure simultaneously, can conveniently upgrade current air conditioner into heat pump air conditioner, reduce thermal management system development expense, and reduction in production cost.

Optionally, the method further comprises: the vehicle-mounted heat exchanger assembly is provided with a fourth liquid inlet end and a fourth liquid outlet end, the fourth liquid inlet end is respectively connected with a third liquid inlet end of the gas-liquid separator and a second liquid outlet end of the compressor, a first stop valve is arranged on a connecting pipeline of the fourth liquid inlet end and the third liquid inlet end of the gas-liquid separator, a second stop valve is arranged on a connecting pipeline of the fourth liquid inlet end and the second liquid outlet end of the compressor, a third stop valve is arranged on a connecting pipeline of the first liquid outlet end of the first heat exchanger and the first expansion valve, a fourth stop valve is arranged on a connecting pipeline of the second liquid outlet end of the compressor and the first liquid inlet end of the first heat exchanger, a second expansion valve is arranged on a connecting pipeline of the fourth liquid outlet end and the first liquid outlet end of the first heat exchanger, a connecting pipeline between the fourth liquid outlet end and the second expansion valve and a connecting pipeline between the third stop valve and the first expansion valve The connecting pipelines are connected; the first heat exchanger still has first input port and first delivery outlet, warm braw core assembly has second input port and second delivery outlet, and first input port is connected with the second delivery outlet, and first delivery outlet passes through the warm braw water pump and is connected with the second input port, can further save the energy consumption, promotes whole car continuation of the journey mileage.

Optionally, the method further comprises: evaporator assembly and third expansion valve in the car, evaporator assembly has fifth feed liquor end and fifth liquid end in the car, the fifth liquid end that goes out is connected on the connecting pipeline between the third liquid outlet of the third feed liquor end of vapour and liquid separator and left core, the fifth feed liquor end is connected through the third expansion valve on the connecting pipeline between fourth liquid end and the first expansion valve, can avoid preceding windscreen to fog and frost.

Optionally, the method further comprises: motor electrically controlled device, motor electrically controlled device have the heat transfer passageway that is used for the cooling, the heat transfer passageway has fourth inlet and fourth liquid outlet, the fourth liquid outlet is connected with the second inlet of battery water pump and right core respectively through last three-way valve, and the fourth inlet is connected with first inlet and second liquid outlet respectively through lower three-way valve, can realize recycling motor electrically controlled device's heat, not only can further improve the degree of integrating, help the integration management of heat, but also can realize the thermal recovery of motor electrically controlled device, help further optimizing the energy consumption, improve new energy automobile's duration.

Optionally, the method further comprises: motor water pump with be used for the radiating motor radiator assembly of motor, motor radiator assembly has fifth inlet and fifth liquid outlet, the fifth inlet is in through preceding three-way valve connection on the connecting pipeline between fourth liquid outlet and the last three-way valve, the fifth liquid outlet passes through motor water pump to be connected on the connecting pipeline between fourth inlet and the lower three-way valve, can retrieve the heat that the motor produced, further improve the degree of integrating of air conditioner, the integration management of the thermal energy of being convenient for optimizes the energy consumption, improves new energy automobile's duration.

Optionally, the left core still has sixth inlet and sixth liquid outlet, the sixth inlet is connected on the connecting pipeline between warm braw water pump and the warm braw core assembly, and the sixth liquid outlet passes through right three-way valve connection on the connecting pipeline between first heat exchanger and the warm braw core assembly, not only can adopt the heat of battery package assembly to heat for passenger cabin, can also realize passenger cabin and battery package assembly and heat simultaneously, further optimizes the consumption, helps the integrated management of heat energy.

Optionally, the method further comprises: and the electric heater heats the cooling liquid in the connecting pipeline between the right three-way valve and the first heat exchanger so as to ensure the supply of heat energy.

Optionally, the second expansion valve and the first expansion valve both adopt electronic expansion valves, and the third expansion valve adopts an electromagnetic expansion valve, so as to reduce the production cost.

Optionally, the first heat sink is a plate heat exchanger assembly, and the second heat exchanger is a dual-core heat exchanger, so as to reduce production cost.

The application still provides a vehicle, and it includes as above heat pump air conditioning system, not only can improve the degree of integrating, helps the integrated management of heat energy, but also can retrieve the heat that the battery package assembly produced, helps optimizing the energy consumption, improves new energy automobile's duration, and simple structure simultaneously can conveniently upgrade current air conditioner to heat pump air conditioner, reduces heat management system development cost, reduction in production cost.

The application provides a heat pump air conditioning system and vehicle is through setting up first heat exchanger, the second heat exchanger, a compressor, vapour and liquid separator, first expansion valve, battery water pump and cooler, the heat that produces the battery is retrieved and is provided the heat for the refrigerant, associate the heat that indirect heat pump air conditioner and battery package assembly produced, not only can improve the degree of integrating, help the integration management of heat energy, but also can retrieve the heat that battery package assembly produced, help optimizing the energy consumption, improve new energy automobile's duration, moreover, the steam generator is simple in structure, can conveniently upgrade current air conditioner to heat pump air conditioner, reduce heat management system development expense, and the production cost is reduced.

Drawings

Fig. 1 is a schematic diagram of an indirect heat pump heating mode of battery waste heat recovery of the heat pump air conditioning system of the present application.

Fig. 2 is a schematic diagram of an indirect heat pump heating mode of the heat pump air conditioning system of the present application.

Fig. 3 is a schematic diagram of an indirect heat pump heating and dehumidifying mode of the heat pump air conditioning system of the present application.

Fig. 4 is a schematic diagram of an indirect heat pump air conditioning heating and battery heating mode of the heat pump air conditioning system of the present application.

Fig. 5 is a schematic diagram of an air conditioning or battery cooling mode of the heat pump air conditioning system of the present application.

Fig. 6 is a schematic diagram of a motor waste heat heating battery mode of the heat pump air conditioning system of the present application.

Fig. 7 is a schematic view of a low temperature heat dissipation mode of a motor of the heat pump air conditioning system of the present application.

Detailed Description

The technical solutions of the present application are described in detail below with reference to the accompanying drawings and specific embodiments. In which like parts are designated by like reference numerals. It should be noted that the terms "front," "back," "left," "right," "upper" and "lower" used in the following description refer to directions in the drawings, and the terms "inner" and "outer" refer to directions toward and away from, respectively, the geometric center of a particular component.

Fig. 1 shows a schematic diagram of an indirect heat pump heating mode of battery waste heat recovery of the heat pump air conditioning system of the present application. As shown in fig. 1, the present application provides a heat pump air conditioning system, comprising: a first heat exchanger 15, a second heat exchanger 23, a compressor 7, a gas-liquid separator 8, a first expansion valve 24, a battery water pump 20, and a cooler for cooling the battery pack assembly 21. The cooler may be disposed inside the battery pack assembly.

The second heat exchanger 23 includes a left core e and a right core f that perform heat exchange.

The cooler has first inlet and first liquid outlet, right side core f has second inlet and second liquid outlet, first liquid outlet passes through battery water pump 20 and is connected with the second inlet, and the second liquid outlet is connected with first inlet.

The left core e is provided with a third liquid inlet and a third liquid outlet, the first heat exchanger 15 is provided with a first liquid inlet end and a first liquid outlet end, and the compressor 7 is provided with a second liquid inlet end and a second liquid outlet end.

The gas-liquid separator 8 has a third liquid inlet end and a third liquid outlet end, and the refrigerant in the left core e sequentially flows back to the left core e through the third liquid outlet, the third liquid inlet end and the third liquid outlet end of the gas-liquid separator 8, the second liquid inlet end and the second liquid outlet end of the compressor 7, the first liquid inlet end and the first liquid outlet end of the first heat exchanger 15, the first expansion valve 24 and the third liquid inlet.

When the heat pump air conditioning system works, after the cooling liquid in the cooler absorbs the heat generated by the battery pack assembly 21, the cooling liquid is pumped to the right core body f through the battery water pump 20.

After the right core f exchanges heat with the left core e, the temperature of the cooling liquid in the right core f is reduced, and then the cooling liquid flows back into the cooler to continuously absorb the heat generated by the battery pack assembly 21.

The first expansion valve 24 is opened, the refrigerant of the left core e absorbs heat, and then is subjected to gas-liquid separation by the gas-liquid separator 8, and the gas is compressed by the compressor 7 and then enters the first heat exchanger 15. In this case, the first heat exchanger 15 corresponds to a condenser, and the second heat exchanger 23 corresponds to an evaporator.

After being condensed, the refrigerant in the first heat exchanger 15 is throttled and expanded by the first expansion valve 24, and then enters the left core e to exchange heat with the right core f.

The mode shown in fig. 1 is an indirect heat pump heating mode for recovering waste heat, and the mode is suitable for the working condition with more battery waste heat, and is particularly suitable for the situation with higher battery heat productivity such as the low-temperature high-speed running working condition of a new energy automobile, so that the battery waste heat is fully utilized to provide heat for the refrigerant. Wherein, the low-temperature high-speed running working condition can be a working condition that the air temperature is lower than 15 ℃ and the vehicle speed is more than 90 km/h.

The application provides a heat pump air conditioning system is through setting up first heat exchanger 15, second heat exchanger 23, compressor 7, vapour and liquid separator 8, first expansion valve 24, battery water pump 20 and cooler, retrieve the heat that the battery produced and provide the heat for the refrigerant, associate the heat that indirect heat pump air conditioner and battery package assembly 21 produced, not only can improve the degree of integrating, help the integrated management of heat energy, but also the heat that recoverable battery package assembly 21 produced, help optimizing the energy consumption, improve new energy automobile's duration, and simple structure simultaneously, can conveniently upgrade current air conditioner into heat pump air conditioner, reduce thermal management system development expense, reduction in production cost.

Further, the heat pump air conditioning system further includes: the hot air water pump 14, the hot air core body assembly 17 and the exterior heat exchanger assembly 5 exchange heat with the exterior environment of the vehicle.

The heat exchanger assembly 5 outside the vehicle is provided with a fourth liquid inlet end and a fourth liquid outlet end, and the fourth liquid inlet end is respectively connected with the third liquid inlet end of the gas-liquid separator 8 and the second liquid outlet end of the compressor 7.

And a first stop valve 25 is arranged on a connecting pipeline between the fourth liquid inlet end and the third liquid inlet end of the gas-liquid separator 8.

And a second stop valve 6 is arranged on a connecting pipeline between the fourth liquid inlet end and the second liquid outlet end of the compressor 7.

And a fourth stop valve 9 is arranged on a connecting pipeline between the second liquid outlet end of the compressor 7 and the first liquid inlet end of the first heat exchanger 15.

A third stop valve 13 is arranged on a connecting pipeline between the first liquid outlet end of the first heat exchanger 15 and the first expansion valve 24.

A second expansion valve 12 is arranged on a connecting pipeline between the fourth liquid outlet end of the exterior heat exchanger assembly 5 and the first liquid outlet end of the first heat exchanger 15.

And a connecting pipeline between the fourth liquid outlet end and the second expansion valve 12 is connected with a connecting pipeline between the third stop valve 13 and the first expansion valve 24.

The first heat exchanger 15 further has a first input port and a first output port, the warm air core assembly 17 has a second input port and a second output port, the first input port is connected with the second output port, and the first output port is connected with the second input port through the warm air water pump 14.

Fig. 2 shows an indirect heat pump heating mode. In this mode of operation, the second stop valve 6 and the third stop valve 13 are closed, the first stop valve 25 and the fourth stop valve 9 are opened, the second expansion valve 12 is opened, and the first expansion valve 24 is closed. The compressor 7 compresses the discharged high-temperature refrigerant into the first heat exchanger 15.

And (3) starting the warm air water pump 14, pumping the heat-exchanged cooling liquid into the warm air core body assembly 17 by the warm air water pump 14, and heating the passenger compartment by the cooling liquid. The coolant with the lowered temperature enters the first heat exchanger 15 again, the high-temperature refrigerant exchanges heat with the low-temperature coolant, the coolant is heated, and the heated coolant is reheated to the passenger compartment.

The high-temperature refrigerant after heat exchange is cooled, throttled and expanded by the second expansion valve 12, enters the exterior heat exchanger assembly 5 to absorb heat of the exterior environment of the vehicle, and is gasified.

The gasified refrigerant is separated by the gas-liquid separator 8, and then enters the compressor 7 to be compressed into a high-temperature and high-pressure refrigerant, which again enters the first heat exchanger 15.

The indirect heat pump heating mode is suitable for low-temperature environment working conditions (for example, the external temperature is-15 ℃ to 15 ℃), so that the energy consumption can be further saved, and the endurance mileage of the whole vehicle can be improved.

In one embodiment of the present application, the heat pump air conditioning system further comprises: an in-vehicle evaporator assembly 10 and a third expansion valve 11.

Evaporator assembly 10 has fifth feed liquor end and fifth liquid end in the car, the fifth liquid end that goes out is connected on the connecting pipeline between the third liquid outlet of the third feed liquor end of vapour and liquid separator 8 and left core e, the fifth feed liquor end is connected through third expansion valve 11 on the connecting pipeline between fourth liquid end and first expansion valve 24.

By arranging the evaporator assembly 10 and the third expansion valve 11 in the vehicle, the front windshield can be prevented from being fogged and frosted.

The mode shown in fig. 3 is an indirect heat pump heating and dehumidifying mode, and is suitable for the situation that front windshields of passenger compartments are fogged and frosted.

When the indirect heat pump operates in the heating and dehumidifying mode, the fourth stop valve 9 and the third stop valve 13 are opened, the second stop valve 6 and the first stop valve 25 are closed, the second expansion valve 12 is closed, the third expansion valve 11 is opened, the first expansion valve 24 is closed, and the warm air water pump 14 is started.

In this case, the first heat exchanger 15 corresponds to a condenser, and the in-vehicle evaporator assembly 10 corresponds to an evaporator, so that cooling and dehumidification are performed while heating and warming are performed.

Further, the heat pump air conditioning system further includes: further comprising: the motor electric control device is provided with a heat exchange channel for cooling.

The heat exchange channel is provided with a fourth liquid inlet and a fourth liquid outlet, the fourth liquid outlet is respectively connected with the battery water pump 20 and the second liquid inlet of the right core body f through an upper three-way valve 19, and the fourth liquid inlet is respectively connected with the first liquid inlet and the second liquid outlet through a lower three-way valve 22.

Through being connected motor electrically controlled device's heat transfer passageway and right core f, can realize recycling motor electrically controlled device 3's heat, not only can further improve the degree of integrating, help the integrated management of heat energy, but also can realize the heat recovery to motor electrically controlled device 3, help further optimizing the energy consumption, improve new energy automobile's duration.

Preferably, the heat pump air conditioning system further comprises: motor water pump 4 and the motor radiator assembly 1 that is used for giving the motor heat dissipation.

The motor radiator assembly 1 is provided with a fifth liquid inlet and a fifth liquid outlet, and the fifth liquid inlet is connected to a connecting pipeline between a fourth liquid outlet of the heat exchange channel and the upper three-way valve 19 through the front three-way valve 2.

And the fifth liquid outlet is connected with a connecting pipeline between the fourth liquid inlet and the lower three-way valve 22 through a motor water pump 4.

Through setting up motor water pump 4 and motor radiator assembly 1, can retrieve the heat that the motor produced, further improve the degree of integrating of air conditioner, the integrated management of the heat energy of being convenient for optimizes the energy consumption, improves new energy automobile's duration.

Further, left core e still has sixth inlet and sixth liquid outlet, the sixth inlet is connected on the connecting pipeline between warm braw water pump 14 and the warm braw core assembly 17, and the sixth liquid outlet passes through right three-way valve 18 and connects on the connecting pipeline between first heat exchanger 15 and the warm braw core assembly 17, not only can adopt the heat of battery package assembly 21 to heat for the passenger cabin, can also realize passenger cabin and battery package assembly 21 and heat simultaneously, further optimizes the consumption, helps the integrated management of heat energy.

Preferably, the heat pump air conditioning system further comprises: and an electric heater 16, wherein the electric heater 16 heats the cooling liquid in the connecting pipeline between the right three-way valve 18 and the first heat exchanger 15.

The electric heater 16 can be used as a heat source supplement at extremely low ambient temperature (such as external temperature less than-25 ℃) or in an indirect heat pump mode, so as to ensure the supply of heat. The electric heater 16 may also implement a scenario where the passenger compartment, the battery, or both require heating.

In one embodiment, the compressor 7 may be an existing electric compressor, the second expansion valve 12 and the first expansion valve 24 are electronic expansion valves, the third expansion valve 11 is an electromagnetic expansion valve, the first radiator 15 is a plate heat exchanger assembly, and the second heat exchanger 23 is a double-core heat exchanger, so as to reduce the production cost.

The mode shown in fig. 4 is an indirect heat pump air conditioning heating and battery heating mode. When the indirect heat pump air conditioner heats and the battery heating mode operates, the fourth stop valve 9 and the first stop valve 25 are opened, the second stop valve 6 and the third stop valve 13 are closed, the second expansion valve 12 is opened, the first expansion valve 24 and the third expansion valve 11 are closed, the right three-way valve 18 is communicated with c-a by 30 percent and c-b by 70 percent according to a certain proportion (for example, 3: 7), the a-b of the upper three-way valve 19 is communicated with b-a of the lower three-way valve 22, the warm air water pump 14 and the battery water pump 20 are opened, and after absorbing the heat of the outside air, the refrigerant in the heat exchanger assembly 5 outside the vehicle enters the first heat exchanger 15 through the gas-liquid separator 8 and the compressor 7 to exchange heat.

The cooling liquid after heat exchange respectively enters the warm air core assembly 17 and the left core e through the warm air water pump 14, and the warm air core assembly 17 can supply heat for the passenger compartment.

After the left core body e and the right core body f exchange heat, the battery pack assembly 21 is heated, and the requirement for simultaneous heat supply of the passenger compartment and the battery pack assembly 21 can be met.

The mode shown in fig. 5 is an air-conditioning cooling or battery cooling mode, the second cutoff valve 6 is opened, the first cutoff valve 25, the third cutoff valve 13, and the fourth cutoff valve 9 are closed, and the second expansion valve 12 is closed.

The third expansion valve 11 is opened according to the cooling demand of the passenger compartment. The first expansion valve 24 is opened according to the cooling demand of the battery pack assembly 21.

Meanwhile, in order to cool the battery pack assembly 21, the battery water pump 20 needs to be started, the upper three-way valve 19 is communicated with a-b, the lower three-way valve 22 is communicated with a-b, and heat exchange is carried out between the left core e and the right core f of the double-core heat exchanger.

Of course, the heat dissipation and cooling of the motor can also be realized, namely the motor water pump 4 is required to be started, and the front three-way valve 2 is communicated with the a-c.

The mode shown in fig. 6 is a mode of heating the battery by using the waste heat of the motor, and the battery pack assembly 21 can be heated by using the waste heat of the motor, so that the activity and the available capacity of the battery are improved, and the endurance mileage of the whole vehicle is prolonged.

As shown in fig. 6, a-b of the front three-way valve 2, a-c of the upper three-way valve 19, and a-c of the lower three-way valve 22 are communicated. Wherein, a-b, a-c, b-c refer to the joints a and b, a and c, b and c of each three-way valve.

Before the battery heating mode by the waste heat of the motor is started, the a-b of the front three-way valve 2 is communicated, the b-c of the upper three-way valve 19 is communicated, and the b-c of the lower three-way valve 22 is communicated, so that the heat storage of the motor electric control device 3 is realized, and after the heat of the motor electric control device 3 is more, the battery pack assembly 21 is heated again.

The mode shown in fig. 7 is a battery low-temperature heat radiation mode in which c-b of the front three-way valve 2, a-c of the upper-way valve 19, and a-c of the lower three-way valve 22 are communicated. This mode is suitable for a scenario where the motor does not need cooling, and the temperature of the battery pack assembly 21 is not particularly high (e.g., 40 ℃), and cooling using the motor radiator assembly 1 can be satisfied, which can further reduce power consumption.

The present application further provides a vehicle comprising a heat pump air conditioning system as described above.

The utility model provides a vehicle is through setting up first heat exchanger 15, second heat exchanger 23, compressor 7, vapour and liquid separator 8, first expansion valve 24, battery water pump 20 and cooler, the heat that produces the battery is retrieved and is provided the heat for the refrigerant, associate the heat that indirect heat pump air conditioner and battery package assembly 21 produced, not only can improve the degree of integrating, help the integration management of heat energy, but also the heat that recoverable battery package assembly 21 produced, help optimizing the energy consumption, improve new energy automobile's duration, moreover, the steam generator is simple in structure, can conveniently upgrade current air conditioner to heat pump air conditioner, reduce thermal management system development expense, and the production cost is reduced.

The technical solutions of the present application are described in detail with reference to specific embodiments, which are used to help understand the ideas of the present application. The derivation and modification made by the person skilled in the art on the basis of the specific embodiment of the present application also belong to the protection scope of the present application.

Claims

1. A heat pump air conditioning system, comprising: the battery pack assembly comprises a first heat exchanger, a second heat exchanger, a compressor, a gas-liquid separator, a first expansion valve, a battery water pump and a cooler for cooling the battery pack assembly, wherein the second heat exchanger comprises a left core body and a right core body, the left core body and the right core body exchange heat, the cooler is provided with a first inlet and a first liquid outlet, the right core body is provided with a second inlet and a second liquid outlet, the first liquid outlet is connected with the second inlet through the battery water pump, the second liquid outlet is connected with the first inlet, the left core body is provided with a third liquid inlet and a third liquid outlet, the first heat exchanger is provided with a first liquid inlet end and a first liquid outlet end, the compressor is provided with a second liquid inlet end and a second liquid outlet end, the gas-liquid separator is provided with a third liquid inlet end and a third liquid outlet end, the first expansion valve is arranged on a connecting pipeline of the first liquid outlet end and the third liquid inlet end, and the refrigerant in the left core body sequentially flows back into the left core body through a third liquid outlet, a third liquid inlet end, a third liquid outlet end, a second liquid inlet end, a second liquid outlet end, a first liquid inlet end, a first liquid outlet end, a first expansion valve and a third liquid inlet.

2. The heat pump air conditioning system of claim 1, further comprising: the vehicle-mounted heat exchanger assembly is provided with a fourth liquid inlet end and a fourth liquid outlet end, the fourth liquid inlet end is respectively connected with a third liquid inlet end of the gas-liquid separator and a second liquid outlet end of the compressor, a first stop valve is arranged on a connecting pipeline of the fourth liquid inlet end and the third liquid inlet end of the gas-liquid separator, a second stop valve is arranged on a connecting pipeline of the fourth liquid inlet end and the second liquid outlet end of the compressor, a third stop valve is arranged on a connecting pipeline of the first liquid outlet end of the first heat exchanger and the first expansion valve, a fourth stop valve is arranged on a connecting pipeline of the second liquid outlet end of the compressor and the first liquid inlet end of the first heat exchanger, a second expansion valve is arranged on a connecting pipeline of the fourth liquid outlet end and the first liquid outlet end of the first heat exchanger, a connecting pipeline between the fourth liquid outlet end and the second expansion valve and a connecting pipeline between the third stop valve and the first expansion valve The connecting pipelines are connected; the first heat exchanger is also provided with a first input port and a first output port, the warm air core body assembly is provided with a second input port and a second output port, the first input port is connected with the second output port, and the first output port is connected with the second input port through a warm air water pump.

3. The heat pump air conditioning system of claim 2, further comprising: evaporator assembly and third expansion valve in the car, evaporator assembly has fifth feed liquor end and fifth liquid end in the car, the fifth liquid end that goes out is connected on the connecting pipeline between the third liquid outlet of the third feed liquor end of vapour and liquid separator and left core, the fifth feed liquor end is connected through the third expansion valve on the connecting pipeline between fourth liquid end and the first expansion valve.

4. The heat pump air conditioning system of claim 3, further comprising: the motor electric control device is provided with a heat exchange channel for cooling, the heat exchange channel is provided with a fourth inlet and a fourth liquid outlet, the fourth liquid outlet is respectively connected with the second inlet of the battery water pump and the right core body through an upper three-way valve, and the fourth inlet is respectively connected with the first inlet and the second liquid outlet through a lower three-way valve.

5. The heat pump air conditioning system of claim 4, further comprising: motor water pump with be used for the radiating motor radiator assembly of motor, motor radiator assembly has fifth inlet and fifth liquid outlet, the fifth inlet is in through preceding three-way valve connection on the connecting pipeline between fourth liquid outlet and the last three-way valve, the fifth liquid outlet passes through motor water pump to be connected on the connecting pipeline between fourth inlet and the lower three-way valve.

6. The heat pump air conditioning system of claim 5, wherein the left core further has a sixth inlet port and a sixth outlet port, the sixth inlet port being connected to a connection line between the warm air water pump and the warm air core assembly, the sixth outlet port being connected to a connection line between the first heat exchanger and the warm air core assembly through a right three-way valve.

7. The heat pump air conditioning system of claim 6, further comprising: and the electric heater heats the cooling liquid in the connecting pipeline between the right three-way valve and the first heat exchanger.

8. The heat pump air conditioning system of claim 7, wherein the second expansion valve and the first expansion valve are both electronic expansion valves, and the third expansion valve is an electromagnetic expansion valve.

9. The heat pump air conditioning system of any of claims 1-8, wherein the first heat sink is a plate heat exchanger assembly and the second heat exchanger is a dual core heat exchanger.

10. A vehicle comprising a heat pump air conditioning system according to any one of claims 1 to 9.