CN108674129A - Electric automobile and air conditioning system thereof - Google Patents

Abstract

The invention belongs to the field of automobile air conditioning systems, and particularly provides an electric automobile and an air conditioning system thereof. The invention aims to solve the problem that the driving mileage of the electric automobile is shorter due to high power consumption in heating of the conventional electric automobile. Therefore, the air conditioning system comprises a first loop and a second loop which are connected in parallel, wherein the first loop comprises a compressor, a heat exchanger, a first expansion valve and a condenser which are sequentially connected end to end; the second loop comprises a circulating pump, a heat exchanger and a radiator which are connected end to end in sequence; the first circuit and the second circuit are capable of exchanging heat via a heat exchanger. The first loop also comprises a branch loop, the branch loop comprises a second expansion valve and an evaporator, and the condenser, the second expansion valve, the evaporator and the compressor are connected in sequence. The air conditioning system can absorb heat from the outside by means of the phase change of the refrigerant in the first loop to heat the passenger compartment, so that the heating efficiency is improved, the power consumption is reduced, and the endurance mileage of the electric automobile is prolonged.

Description

Electric Vehicle and Its Air Conditioning System

technical field

The invention belongs to the field of automobile air-conditioning systems, and specifically provides an electric automobile and its air-conditioning system.

Background technique

A pure electric vehicle usually includes a heating system and a cooling system, so that the passenger compartment can be heated through the heating system, and the passenger compartment can be cooled through the cooling system.

Heating systems are usually heated by electric heaters. After being heated, the electric heater exchanges heat with the surrounding air, and the heated air is blown into the passenger compartment by the blower to heat the passenger compartment. The refrigeration system is usually a conventional air-conditioning system, which compresses the refrigerant through an electric compressor and circulates the refrigerant in the circuit. The compressed refrigerant evaporates in the evaporator and absorbs the heat of the surrounding air, and the cooled air is blown into the passenger compartment by the fan to cool the passenger compartment.

The above-mentioned heating and cooling systems are usually independent and work independently, and the integration degree is not high. The heating efficiency of the heating system is low, and the power consumption is large, which seriously shortens the cruising range of the electric vehicle.

Accordingly, the art needs a new electric vehicle and its air conditioning system to solve the above problems.

Contents of the invention

In order to solve the above-mentioned problems in the prior art, that is, in order to solve the problem that the high power consumption of electric vehicles during heating leads to the short cruising range of electric vehicles, the present invention provides an air-conditioning system for electric vehicles. The system includes a parallel first circuit and a second circuit, the first circuit includes a compressor, a heat exchanger, a first expansion valve, and a condenser connected end to end in sequence; the second circuit includes a cycle connected end to end in sequence pump, said heat exchanger and radiator; said first circuit and said second circuit are capable of exchanging heat through said heat exchanger.

In the preferred technical solution of the above air conditioning system, the first circuit further includes a branch circuit, the branch circuit includes a second expansion valve and an evaporator, the condenser, the second expansion valve, the evaporation and the The compressors are connected sequentially.

In the preferred technical solution of the above air conditioning system, the first circuit further includes a three-way control valve, the three-way control valve includes an input valve port, a first output valve port and a second output valve port, and the input valve port It communicates with the output end of the condenser, the first output valve port communicates with the input end of the second expansion valve, and the second output valve port communicates with the input end of the compressor; the three-way A control valve is capable of selectively placing the condenser in direct communication with the compressor or placing the condenser in indirect communication with the compressor through the bypass circuit.

In a preferred technical solution of the above air conditioning system, the second circuit further includes an electric heater for heating the medium in the second circuit.

In a preferred technical solution of the above air conditioning system, the electric heater is arranged between the heat exchanger and the radiator.

In a preferred technical solution of the above air conditioning system, the heat exchanger includes a first channel and a second channel, the first channel is connected in series to the first circuit, and the second channel is connected in series to the second circuit middle.

In the preferred technical solution of the above-mentioned air conditioning system, the air conditioning system further includes a first blower arranged adjacent to the condenser, the first blower can provide airflow blowing to the condenser, and make the airflow blow to external.

In the preferred technical solution of the above-mentioned air conditioning system, the air conditioning system further includes a second fan arranged adjacent to the radiator, the second fan can provide airflow blowing to the radiator, and make the airflow blow to Inside the passenger compartment of the electric car.

In the preferred technical solution of the above air conditioning system, the air conditioning system further includes a third blower arranged adjacent to the evaporator, the third blower can provide airflow blowing to the evaporator, and make the airflow blow to Inside the passenger compartment of the electric car.

In a preferred technical solution of the above air conditioning system, the radiator is a warm air core; and/or the heat exchanger is a plate heat exchanger.

In a preferred technical solution of the above air conditioning system, the first expansion valve and/or the second expansion valve are electronic expansion valves; and/or the three-way control valve is an electronic control valve.

In a preferred technical solution of the above air conditioning system, the circulation pump is a water pump, and/or the medium in the second circuit is water.

In addition, the present invention also provides an electric vehicle, which includes the air-conditioning system described in any one of the preferred technical solutions of the above-mentioned air-conditioning system.

Those skilled in the art can understand that, in the preferred technical solution of the present invention, the air conditioning system includes a first loop and a second loop connected in parallel, and the first loop includes a compressor, a heat exchanger, a first expansion A valve and a condenser; the second loop includes a circulation pump, a heat exchanger and a radiator connected end to end in sequence; the first loop and the second loop can exchange heat through the heat exchanger.

In the first circuit, the gaseous refrigerant is compressed by the compressor and becomes a high-temperature and high-pressure liquid refrigerant, and the high-temperature and high-pressure liquid refrigerant exchanges heat with the medium in the second circuit in the heat exchanger to become a low-temperature and high-pressure refrigerant. liquid refrigerant. The low-temperature and high-pressure liquid refrigerant passes through the first expansion valve and becomes a low-temperature and low-pressure gaseous refrigerant, and the low-temperature and low-pressure gaseous refrigerant absorbs heat from the outside when passing through the condenser to become a high-temperature and low-pressure gaseous refrigerant. The high-temperature and low-pressure refrigerant becomes a high-temperature and high-pressure liquid refrigerant again through the action of the compressor.

In the second circuit, the medium absorbs heat from the first circuit at the heat exchanger and becomes high temperature medium. Under the action of the circulation pump, the high-temperature medium releases heat to the passenger compartment when it passes through the radiator, thereby heating the passenger compartment. Therefore, the high-temperature medium becomes a low-temperature medium after passing through the radiator. The low-temperature medium enters the heat exchanger again to absorb heat under the action of the circulation pump.

Therefore, the air conditioning system of the present invention can absorb heat from the outside by means of the phase change of the refrigerant in the first circuit to heat the passenger compartment. Therefore, compared with the existing heating system that heats the passenger compartment through a heater, the air-conditioning system of the present invention improves the heating efficiency, reduces power consumption, and prolongs the cruising range of the electric vehicle.

It should be noted that the above high temperature and low temperature of the refrigerant refer to the temperature change of the refrigerant passing through a certain component in the first circuit, so the high temperature and low temperature are relative values rather than absolute values.

In a feasible technical solution of the present invention, the first circuit further includes a three-way control valve, a second expansion valve and an evaporator. The three-way control valve includes an input valve port, a first output valve port and a second output valve port, the input valve port communicates with the output end of the condenser, the first output valve port communicates with the input end of the second expansion valve, and the second output valve port The valve port communicates with the input end of the compressor. The output of the second expansion valve also communicates with the input of the compressor through the evaporator. When the air conditioning system of the present invention is heating, the three-way control valve only puts the condenser in direct communication with the compressor (as described above). When the air-conditioning system of the present invention is cooling, the three-way control valve only communicates the condenser with the second expansion valve, while prohibiting the first expansion valve from working. In the first circuit, the gaseous refrigerant is compressed by the compressor to become a high-temperature and high-pressure liquid refrigerant, and the high-temperature and high-pressure liquid refrigerant passes through the condenser to become a low-temperature and high-pressure liquid refrigerant. The low-temperature and high-pressure liquid refrigerant passes through the second expansion valve and becomes a low-temperature and low-pressure gaseous refrigerant, and the low-temperature and low-pressure gaseous refrigerant absorbs heat from the outside when passing through the evaporator to cool the passenger compartment.

Furthermore, in order to prevent the air conditioning system from working normally when the outside temperature is too low, an electric heater for heating the medium in the second circuit is also connected in series in the second circuit.

Solution 1. An air conditioning system for an electric vehicle, characterized in that the air conditioning system includes a parallel first circuit and a second circuit,

The first circuit includes a compressor, a heat exchanger, a first expansion valve and a condenser connected end to end in sequence;

The second loop includes a circulation pump, the heat exchanger and a radiator connected end to end in sequence;

The first circuit and the second circuit are capable of exchanging heat through the heat exchanger.

Solution 2. The air conditioning system for electric vehicles according to solution 1, wherein the first circuit further includes a branch circuit, the branch circuit includes a second expansion valve and an evaporator, the condenser, the first The two expansion valves, the evaporator and the compressor are connected in sequence.

Solution 3. The air conditioning system for electric vehicles according to solution 2, characterized in that the first circuit further includes a three-way control valve, and the three-way control valve includes an input valve port, a first output valve port and a second an output valve port, the input valve port communicates with the output end of the condenser, the first output valve port communicates with the input end of the second expansion valve, and the second output valve port communicates with the compressor The input end is connected;

The three-way control valve can selectively connect the condenser directly with the compressor or connect the condenser indirectly with the compressor through the branch circuit.

Solution 4. The air conditioning system of an electric vehicle according to any one of solutions 1 to 3, wherein the second circuit further includes an electric heater for heating the medium in the second circuit.

Solution 5. The air conditioning system for electric vehicles according to solution 4, wherein the electric heater is arranged between the heat exchanger and the radiator.

Solution 6. The air conditioning system for electric vehicles according to any one of solutions 1 to 3, wherein the heat exchanger includes a first channel and a second channel, and the first channel is connected in series to the first In the loop, the second channel is connected in series to the second loop.

Solution 7. The air conditioning system for electric vehicles according to any one of solutions 1 to 3, characterized in that the air conditioning system further includes a first fan arranged adjacent to the condenser, and the first fan can provide blowing air. Airflow to the condenser, and blow the airflow to the outside.

Solution 8. The air conditioning system for electric vehicles according to any one of solutions 1 to 3, characterized in that the air conditioning system further includes a second fan arranged adjacent to the radiator, and the second fan can provide blowing air. To the airflow of the radiator, and make the airflow blow into the passenger compartment of the electric vehicle.

Solution 9. The air-conditioning system for electric vehicles according to solution 2 or 3, characterized in that the air-conditioning system further includes a third fan arranged adjacent to the evaporator, and the third fan can provide blowing to the evaporator the airflow of the device, and make the airflow blow into the passenger compartment of the electric vehicle.

Solution 10. The air conditioning system for electric vehicles according to solution 2 or 3, wherein the radiator is a warm air core; and/or the heat exchanger is a plate heat exchanger.

Solution 11. The air conditioning system for electric vehicles according to solution 3, wherein the first expansion valve and/or the second expansion valve are electronic expansion valves; and/or the three-way control valve is an electronic expansion valve. Control valve.

Solution 12. The air-conditioning system of an electric vehicle according to any one of solutions 1 to 3, wherein the circulating pump is a water pump, and/or the medium in the second circuit is water.

Solution 13. An electric vehicle, characterized in that the electric vehicle includes the air conditioning system described in any one of solutions 1-12.

Description of drawings

Describe preferred embodiment of the present invention below with reference to accompanying drawing, in the accompanying drawing:

Fig. 1 is the schematic diagram of the principle of the air conditioning system of the present invention;

Fig. 2 is a working schematic diagram of the air conditioning system of the present invention in the first heating mode;

Fig. 3 is a working schematic diagram of the air conditioning system of the present invention in the second heating mode;

Fig. 4 is a working diagram of the air conditioning system of the present invention in cooling mode.

List of reference signs:

1. Compressor; 2. Heat exchanger; 201. First channel; 202. Second channel; 3. First expansion valve; 4. Condenser; 5. Condenser fan; 6. Three-way control valve; 601. Input valve port; 602, first output valve port; 603, second output valve port; 7, second expansion valve; 8, evaporator; 9, evaporator fan; 10, electric heater; 11, warm air core ; 12, warm air fan; 13, circulation pump.

Detailed ways

Those skilled in the art should understand that the embodiments in this section are only used to explain the technical principle of the present invention, and are not used to limit the protection scope of the present invention. For example, although the air-conditioning system of the present invention switches the working state through the three-way control valve, the three-way control valve can also be replaced by two cut-off valves, and those skilled in the art can make adjustments to it according to needs, so as to adapt to In specific application occasions, the adjusted technical solution will still fall within the protection scope of the present invention.

It should be noted that, in the description of the present invention, the terms "first", "second", and "third" are used for description purposes only, and should not be understood as indicating or implying relative importance. In addition, unless otherwise clearly stipulated and limited, the terms "mounted", "connected" and "connected" should be interpreted in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical A connection can also be an electrical connection; it can be a direct connection or an indirect connection through an intermediary, and it can be the internal communication of two components. Those skilled in the art can understand the specific meanings of the above terms in the present invention according to specific situations.

As shown in FIG. 1 , the air conditioning system of the present invention mainly includes a first circuit and a second circuit. Wherein, the first loop mainly includes a compressor 1 , a heat exchanger 2 , a first expansion valve 3 and a condenser 4 connected end to end in sequence. The first circuit also includes a three-way control valve 6 and a branch circuit, which mainly includes a second expansion valve 7 and an evaporator 8 in communication. The three-way control valve 6 includes an input valve port 601 , a first output valve port 602 and a second output valve port 603 . The three-way control valve 6 communicates with the output end of the condenser 4 through the input valve port 601, communicates with the input end of the second expansion valve 7 through the first output valve port 602, and communicates with the input end of the compressor 1 through the second output valve port 603. connected directly. Wherein, the output end of the second expansion valve 7 communicates with the input end of the evaporator 8 , and the output end of the evaporator 8 communicates with the input end of the compressor 1 .

Those skilled in the art can understand that, by controlling the three-way control valve 6 , the condenser 4 can be selectively communicated directly with the compressor 1 or indirectly communicated with the compressor 1 through a branch circuit.

Those skilled in the art can also understand that, in order to facilitate the control of the air-conditioning system, the first expansion valve 3 and the second expansion valve 7 are both electronic expansion valves, and the three-way control valve 6 is an electronic control valve. Alternatively, those skilled in the art can also configure the first expansion valve 3 , the three-way control valve 6 and the second expansion valve 7 as manual control valves as required.

Continuing to refer to FIG. 1 , the second loop mainly includes an electric heater 10 , a warm air core 12 , a circulation pump 13 and a heat exchanger 2 connected end to end in sequence. Wherein, the heat exchanger 2 includes a first channel 201 and a second channel 202 . The heat exchanger 2 is connected in series to the first circuit through the first channel 201 and connected in series to the second circuit through the second channel 202 . During operation, the heat exchanger 2 can realize heat exchange between the refrigerant in the first circuit and the refrigerant in the second circuit.

In a preferred embodiment of the invention, the heat exchanger 2 is a plate heat exchanger. In addition, those skilled in the art can also use other heat exchangers in any form as required, such as shell-and-tube heat exchangers, floating head heat exchangers, fixed tube-sheet heat exchangers, or U-shaped tube-sheet heat exchangers.

It should be noted that, in a preferred embodiment of the present invention, the circulating medium in the first loop is a coolant, and the coolant can undergo a phase change in the first loop. The refrigerant may be inorganic compound refrigerant, freon, saturated hydrocarbon refrigerant, unsaturated hydrocarbon refrigerant or azeotropic mixture refrigerant. The circulating medium in the second loop is water, and the corresponding circulating pump 13 is a water pump. In addition, those skilled in the art may also replace the medium in the second circuit as required, such as replacing water with hydraulic oil, water glycol, and the like.

Continuing to refer to FIG. 1 , the air conditioning system of the present invention further includes a condenser fan 5 as a first fan, a heater fan 12 as a second fan, and an evaporator fan 9 as a third fan. Wherein, the condenser fan 5 is arranged adjacent to the condenser 4, and is used for blowing hot air or cold air around the condenser 4 to the outside. The evaporator blower 9 is arranged adjacent to the evaporator 8, and is used for blowing the cold air around the evaporator 8 into the passenger compartment of the vehicle to cool the passenger compartment. The warm air blower 12 is arranged adjacent to the warm air core 11, and is used to blow the hot air around the warm air core 11 into the passenger compartment of the automobile to heat the passenger compartment. Those skilled in the art can understand that the condenser fan 5 , the evaporator fan 9 and the heater fan 12 can be fans in any form, such as centrifugal fans, axial flow fans, oblique flow fans and cross flow fans.

The working principle of the air conditioning system of the present invention will be described in detail below with reference to FIGS. 2 to 4 .

As shown in Fig. 2, Fig. 2 shows the heating operation mode of the air conditioning system of the present invention when the ambient temperature is lower than -10°C.

In this heating mode of operation, only the second circuit works. During operation, the water in the second circuit is continuously circulated in the second circuit under the action of the circulation pump 13 . The electric heater 10 heats the circulating water. When the high-temperature water passes through the warm-air core 11, heat is released into the outside air through the warm-air core 11, and the air heats up. The high-temperature air is blown into the passenger compartment by the heater blower 12 to heat the passenger compartment.

As shown in Fig. 3, Fig. 3 shows the heating operation mode of the air conditioning system of the present invention when the ambient temperature is higher than -10°C.

In this heating operation mode, the first circuit and the second circuit work simultaneously. And in the first circuit, the first output valve port 602 of the three-way control valve 6 is in the disconnected state, and the second output valve port 603 of the three-way control valve 6 is in the connected state. In the second circuit, the electric heater 10 is not operated.

During operation, in the first circuit, the gaseous refrigerant is compressed by the compressor 1 and becomes a high-temperature and high-pressure liquid refrigerant, and the high-temperature and high-pressure liquid refrigerant exchanges heat with the water in the second circuit in the heat exchanger 2 Become a low-temperature high-pressure liquid refrigerant. The low-temperature and high-pressure liquid refrigerant passes through the first expansion valve 3 and becomes a low-temperature and low-pressure gaseous refrigerant, and the low-temperature and low-pressure gaseous refrigerant absorbs heat from the outside when passing through the condenser 4 to become a high-temperature and low-pressure gaseous refrigerant. The high-temperature and low-pressure refrigerant becomes a high-temperature and high-pressure liquid refrigerant again through the action of the compressor 1 . In order to increase the heat absorption speed of the refrigerant in the condenser 4, the condenser fan 5 works to blow the cold air around the condenser 4 to the outside, that is, to the outside of the car, and to provide new normal temperature air for the condenser 4.

During operation, in the second circuit, under the action of the circulation pump 13, the water passes through the heat exchanger 2 to absorb the heat dissipated by the refrigerant in the first circuit to raise its temperature. When the high-temperature water passes through the warm-air core 11, heat is released into the outside air through the warm-air core 11, and the air heats up. The high-temperature air is blown into the passenger compartment by the heater blower 12 to heat the passenger compartment.

As shown in Fig. 4, Fig. 4 shows the cooling operation mode of the air conditioning system of the present invention.

In this cooling mode of operation, only the first circuit works. Moreover, the first expansion valve 3 is not working; the first output valve port 602 of the three-way control valve 6 is in the on state, and the second output valve port 603 of the three-way control valve 6 is in the off state.

During operation, the gaseous refrigerant is compressed by the compressor 1 and becomes a high-temperature and high-pressure liquid refrigerant, and the high-temperature and high-pressure liquid refrigerant dissipates heat to the outside when passing through the evaporator 4 to become a low-temperature and high-pressure liquid refrigerant. The low-temperature and high-pressure liquid refrigerant passes through the second expansion valve 6 and becomes a low-temperature and low-pressure gaseous refrigerant, and the low-temperature and low-pressure gaseous refrigerant absorbs heat from the outside when passing through the evaporator 8 to become a high-temperature and low-pressure gaseous refrigerant. The high-temperature and low-pressure refrigerant becomes a high-temperature and high-pressure liquid refrigerant again through the action of the compressor 1 . The evaporator fan 9 blows the cool air around the evaporator 8 into the passenger compartment to cool the passenger compartment. In order to increase the heat absorption speed of the refrigerant in the condenser 4, the condenser fan 5 works to blow the cold air around the condenser 4 to the outside, and provides new normal temperature air for the condenser 4.

Therefore, the air-conditioning system of the present invention can not only absorb heat from the outside with the help of the phase change of the refrigerant in the first circuit when the ambient temperature is higher than -10°C, and heat the passenger compartment, which reduces the power consumption of the electric vehicle and prolongs the life of the vehicle. range of electric vehicles. The air-conditioning system of the present invention can only heat the passenger compartment through the electric heater 10 in the second circuit when the ambient temperature is lower than -10°C, so that the air-conditioning system cannot normally heat the first circuit when the ambient temperature is too low The passenger compartment can also be heated at the same time to ensure the comfort of the passengers.

In addition, through the above description, those skilled in the art can understand that, under the premise that heat exchange with the outside air can be realized, the warm air core 12 can be any form of radiator, that is, the warm air core 12 can be any form of air-cooled radiators. For example, cast iron radiators, steel radiators and aluminum alloy radiators.

Although not shown in the figure, in another feasible embodiment of the present invention, those skilled in the art can only make the air conditioning system of the present invention have a heating function according to actual needs. The settings of the three-way control valve 6, the second expansion valve 7, the evaporator 8 and the evaporator fan 9 in FIG.

Further, those skilled in the art can continue to omit the installation of the electric heater 10 according to needs, and only absorb heat from the outside through the phase change of the refrigerant in the first circuit.

Although not shown in the figure, in another feasible embodiment of the present invention, those skilled in the art can omit the setting of the three-way control valve 6 in Fig. 1 as required, so that the condenser 4 is directly connected to the second The expansion valve 7 communicates. Furthermore, the airflow driven by the evaporator fan 9 is blown to the outside of the vehicle. When heating, the low-temperature and high-pressure refrigerant after passing through the heat exchanger 2 is decompressed for the first time by the first expansion valve 3 and absorbs heat in the condenser 4; it is decompressed for the second time by the second expansion valve 7 and The heat is reabsorbed in the evaporator 8 . Wherein, the pressure after the first decompression is greater than the pressure after the second decompression. Those skilled in the art can understand that this embodiment can only heat the passenger compartment.

Although it is not shown in the figure, in another feasible embodiment of the present invention, those skilled in the art can also omit the setting of the three-way control valve 6 in Fig. 1, so that the condenser 4 is directly connected to the first The two expansion valves 7 are connected. When the air conditioning system is cooling, only the first circuit is working; when the air conditioning system is heating, only the second circuit is working.

In addition, the present invention also provides an automobile, which includes the air-conditioning system described in any one of the above embodiments.

So far, the technical solutions of the present invention have been described in conjunction with the preferred embodiments shown in the accompanying drawings, but those skilled in the art will easily understand that the protection scope of the present invention is obviously not limited to these specific embodiments. Without departing from the principles of the present invention, those skilled in the art can make equivalent changes or substitutions to relevant technical features, and the technical solutions after these changes or substitutions will all fall within the protection scope of the present invention.

Claims (10)

1. A kind of air-conditioning system of electric vehicle, it is characterized in that, described air-conditioning system comprises the first loop and the second loop of parallel connection, The first circuit includes a compressor, a heat exchanger, a first expansion valve and a condenser connected end to end in sequence; The second loop includes a circulation pump, the heat exchanger and a radiator connected end to end in sequence; The first circuit and the second circuit are capable of exchanging heat through the heat exchanger. 2. The air conditioning system of an electric vehicle according to claim 1, wherein the first circuit further comprises a branch circuit, the branch circuit comprises a second expansion valve and an evaporator, the condenser, the first The two expansion valves, the evaporator and the compressor are connected in sequence. 3. The air conditioning system of an electric vehicle according to claim 2, wherein the first circuit further comprises a three-way control valve, and the three-way control valve comprises an input valve port, a first output valve port and a second an output valve port, the input valve port communicates with the output end of the condenser, the first output valve port communicates with the input end of the second expansion valve, and the second output valve port communicates with the compressor The input end is connected; The three-way control valve can selectively connect the condenser directly with the compressor or connect the condenser indirectly with the compressor through the branch circuit. 4. The air conditioning system of an electric vehicle according to any one of claims 1 to 3, wherein the second circuit further comprises an electric heater for heating the medium in the second circuit. 5. The air conditioning system for electric vehicles according to claim 4, wherein the electric heater is arranged between the heat exchanger and the radiator. 6. The air conditioning system of an electric vehicle according to any one of claims 1 to 3, wherein the heat exchanger includes a first channel and a second channel, and the first channel is connected in series to the first channel. In the loop, the second channel is connected in series to the second loop. 7. The air conditioning system of an electric vehicle according to any one of claims 1 to 3, characterized in that, the air conditioning system further comprises a first fan arranged adjacent to the condenser, the first fan can provide blowing Airflow to the condenser, and blow the airflow to the outside. 8. The air conditioning system of an electric vehicle according to any one of claims 1 to 3, characterized in that, the air conditioning system further comprises a second fan arranged adjacent to the radiator, and the second fan can provide blowing air. To the airflow of the radiator, and make the airflow blow into the passenger compartment of the electric vehicle. 9. The air-conditioning system of an electric vehicle according to claim 2 or 3, characterized in that, the air-conditioning system further comprises a third blower arranged adjacent to the evaporator, the third blower can provide blowing to the evaporator the airflow of the device, and make the airflow blow into the passenger compartment of the electric vehicle. 10. The air conditioning system of an electric vehicle according to claim 2 or 3, wherein the radiator is a warm air core; and/or the heat exchanger is a plate heat exchanger.