CN106864201B - An electric vehicle heat pump air conditioning system with heat recovery system - Google Patents

Abstract

The invention discloses a kind of electric automobile heat-pump air-conditioning system with heat recovery system, including compressor, interior radiator, interior radiator is connected by four-way valve with the gas outlet of compressor；Fluid reservoir, the liquid outlet of fluid reservoir are connected with interior radiator；Vehicle external heat exchanger group, vehicle external heat exchanger group are connected with the inlet of fluid reservoir or liquid outlet；The air inlet of gas-liquid separator, gas-liquid separator is connected by four-way valve with vehicle external heat exchanger group or interior radiator, and the gas outlet of gas-liquid separator is connected with the air inlet of compressor；The electric automobile heat-pump air-conditioning system includes the heat recovery system that can recycle the heat that battery and its battery management unit and motor issue during the work time.The present invention not only increases comfort of the driver in electric car, and also ensures driver with the good visual field, while can also recycle the heat that battery and its battery management unit and motor issue during the work time.

Description

An electric vehicle heat pump air conditioning system with heat recovery system

technical field

The invention relates to the technical field of electric vehicles, in particular to an electric vehicle heat pump air conditioning system with a heat recovery system.

Background technique

In recent years, all countries in the world are promoting energy conservation and environmental protection. With the increase of automobile sales in my country year by year, the carbon emissions of automobiles are also getting higher and higher, and the research focus of the automobile industry has gradually shifted to the low-carbon field. Compared with gasoline, electric vehicles Powered traditional cars show outstanding advantages in environmental protection and energy saving. The electric vehicle air-conditioning system keeps the temperature, humidity and freshness of the vehicle within a certain range, maintaining the comfort in the electric vehicle. Vision and driving safety, electric vehicle air conditioning systems have become an important part of electric vehicles.

The overall structure of the electric vehicle heat pump air conditioning system in the prior art is relatively complex, the refrigeration and refrigeration efficiency are low, and the defrosting and defogging performance is poor, which not only reduces the comfort of the driver in the electric vehicle, but also affects the driver's vision, reducing the performance. In addition, the battery of the electric vehicle, its battery management unit and the motor are prone to generate heat during the working process, and the generated heat not only affects the cooling and heating effect of the air-conditioning system, but also wastes electric energy. , reduce the mileage of the vehicle.

However, in view of the shortcomings of the existing technology, it is necessary for developers to develop an electric vehicle with reasonable design, simple structure, high cooling and heating efficiency, and good defrosting and defogging performance, which not only improves the driver's comfort in the electric vehicle, but also ensures The electric vehicle heat pump air conditioning system with a heat recovery system can provide the driver with a good vision, improve the driving safety, and can also recover the heat generated by the battery, its battery management unit and the motor during the working process.

SUMMARY OF THE INVENTION

In order to solve the problems existing in the prior art, the purpose of the present invention is to provide an electric vehicle with reasonable design, simple structure, high refrigeration and heating efficiency, and good defrosting and defogging performance, which not only improves the comfort of the driver in the electric vehicle, but also improves the performance of the electric vehicle. The electric vehicle heat pump air conditioning system with a heat recovery system can ensure that the driver has a good vision, improve the driving safety, and can also recover the heat generated by the battery, its battery management unit and the motor during the working process.

In order to solve the above technical problems, the present invention adopts the following technical solutions to realize:

An electric vehicle heat pump air conditioning system with a heat recovery system, comprising

a compressor, a high and low pressure controller is arranged on the compressor;

an in-vehicle radiator, the in-vehicle radiator communicates with the air outlet of the compressor through a four-way valve;

a liquid storage tank, the liquid outlet of the liquid storage tank is communicated with the radiator in the vehicle;

An off-vehicle heat exchanger group, the off-vehicle heat exchanger group is communicated with the liquid inlet or the liquid outlet of the liquid storage tank;

A gas-liquid separator, the air inlet of the gas-liquid separator is communicated with the outside heat exchanger group or the car radiator through a four-way valve, and the air outlet of the gas-liquid separator is connected with the air inlet of the compressor connected;

It is characterized in that the electric vehicle heat pump air conditioning system includes a heat recovery system capable of recovering the heat generated by the battery, the battery management unit and the motor during the working process.

In a preferred embodiment of the present invention, the heat recovery system includes

a compressor heat exchanger, the compressor heat exchangers are arranged in parallel on one side of the compressor, and the outlet of the compressor heat exchanger is communicated with the inlet of the battery, the battery management unit and the motor through the first recovery pipe;

a pump, the inlet of the pump is communicated with the outlet of the battery, the battery management unit and the motor through the second recovery pipe;

A recovery heat exchanger group connected in parallel to the outside of the off-vehicle heat exchanger group, the inlet of the recovery heat exchanger group is connected to the outlet of the pump through a third recovery pipe, and the outlet of the recovery heat exchanger group is connected through a fourth recovery pipe. The recovery pipeline is communicated with the inlet of the heat exchanger of the compressor, and the recovery heat exchanger group is composed of at least one recovery heat exchanger connected in parallel or in series.

In a preferred embodiment of the present invention, the compressor communicates with the first interface of the four-way valve through a first pipeline, and the in-vehicle radiator communicates with the second interface of the four-way valve through a second pipeline, The liquid inlet of the liquid storage tank is communicated with the radiator in the vehicle through the third pipeline and the fourth pipeline, and the liquid outlet of the liquid storage tank is exchanged with the outside of the vehicle through the fifth pipeline, the sixth pipeline and the seventh pipeline The heat exchanger group is connected, the off-vehicle heat exchanger group is connected with the third interface of the four-way valve through the eighth pipeline, and the air inlet of the gas-liquid separator is connected with the fourth port of the four-way valve through the ninth pipeline. The interface is connected, the air inlet of the compressor is communicated with the air outlet of the gas-liquid separator through the tenth pipeline, and the off-vehicle heat exchanger group is connected to the inlet of the liquid storage tank through the seventh pipeline and the eleventh pipeline. The liquid ports are communicated with each other, and the liquid outlet of the liquid storage tank is communicated with the in-vehicle radiator through the fifth pipeline and the twelfth pipeline.

In a preferred embodiment of the present invention, an air pressure gauge is provided on the first pipe, a first temperature gauge is provided on the second pipe, and a second temperature gauge is provided on the in-vehicle radiator , a first one-way valve is arranged on the third pipeline, a filter and an expansion valve are arranged on the fifth pipeline, and a third temperature is respectively arranged on both sides of the expansion valve on the fifth pipeline A second one-way valve is arranged on the sixth pipeline, a fifth temperature gauge is arranged on the eighth pipeline, and a third one-way valve is arranged on the eleventh pipeline. A fourth one-way valve is provided on the twelfth pipeline.

Compared with the prior art, the off-vehicle heat exchanger group of the present invention is composed of at least one heat exchanger connected in parallel or in series. Using this structure not only effectively improves the refrigeration and refrigeration efficiency of the system, but also defrosts and removes the heat. The fog performance is good, which improves the driver's comfort in the electric vehicle, and also ensures that the driver has a good field of vision, which further improves the driving safety; in addition, the electric vehicle heat pump air conditioning system includes a The heat recovery system that recovers the heat emitted by the battery management unit and the motor during the working process can recover the heat generated by the battery, its battery management unit and the motor during the working process, avoiding energy waste and being environmentally friendly.

Description of drawings

In order to explain the embodiments of the present invention or the technical solutions in the prior art more clearly, the following briefly introduces the accompanying drawings that need to be used in the description of the embodiments or the prior art. Obviously, the accompanying drawings in the following description are only These are some embodiments of the present invention. For those of ordinary skill in the art, other drawings can also be obtained according to these drawings without creative efforts.

FIG. 1 is a schematic structural diagram of the present invention.

Detailed ways

In order to make it easy to understand the technical means, creation features, achieved goals and effects of the present invention, the present invention will be further described below with reference to the specific figures.

Referring to FIG. 1, an electric vehicle heat pump air conditioning system with a heat recovery system shown in the figure includes a compressor 100, an in-vehicle radiator 300, a liquid storage tank 500, an out-of-vehicle heat exchanger group 900, and a gas-liquid Separator 1000.

The compressor 100 is provided with a high and low pressure controller 110, the in-vehicle radiator 300 is communicated with the air outlet of the compressor 100 through the four-way valve 200, and the liquid outlet of the liquid storage tank 500 is communicated with the in-vehicle radiator 300, The outside heat exchanger group 900 is communicated with the liquid inlet or the liquid outlet of the liquid storage tank 500, and the air inlet of the gas-liquid separator 1000 is connected to the outside heat exchanger group 900 or the inside radiator through the four-way valve 200. 300 is connected, and the air outlet of the gas-liquid separator 1000 is communicated with the air inlet of the compressor 100.

The off-vehicle heat exchanger group 900 is composed of at least one heat exchanger 910 connected in parallel or in series. Adopting this structure not only effectively improves the refrigeration and refrigeration efficiency of the system, but also has good defrosting and defogging performance, which improves the driver's performance. The comfort in an electric vehicle also ensures that the driver has a good field of vision, further improving driving safety.

The compressor 100 is communicated with the first interface 210 of the four-way valve 200 through the first pipeline 1400, the in-vehicle radiator 300 is communicated with the second interface 220 of the four-way valve 200 through the second pipeline 1500, and the inlet of the liquid storage tank 500 is connected. The liquid port is communicated with the in-vehicle radiator 300 through the third pipe 1600 and the fourth pipe 1700, and the liquid outlet of the liquid storage tank 500 is connected with the outside heat exchanger through the fifth pipe 1800, the sixth pipe 1900 and the seventh pipe 2000 The group 900 is connected, the off-vehicle heat exchanger group 900 is connected to the third interface 230 of the four-way valve 200 through the eighth pipeline 2100, and the air inlet of the gas-liquid separator 1000 is connected to the four-way valve 200 through the ninth pipeline 2200. The fourth interface 240 is connected, the air inlet of the compressor 100 is communicated with the air outlet of the gas-liquid separator 1000 through the tenth pipeline 2300, and the off-vehicle heat exchanger 900 group is connected through the seventh pipeline 2000, the eleventh pipeline 2400 and the The fourth pipe 1700 is communicated with the liquid inlet of the liquid storage tank 500, and the liquid outlet of the liquid storage tank 500 is communicated with the in-vehicle radiator 300 through the fifth pipe 1800 and the twelfth pipe 2500, and the parallel heat exchanger 910 One end is connected with the seventh pipe 2000 respectively, and the other end is connected with the eighth pipe 2100 respectively.

A pressure gauge 1410 is provided on the first pipe 1400, a first temperature gauge 1510 is provided on the second pipe 1500, a second temperature gauge 310 is provided on the in-vehicle radiator 300, and a third pipe 1600 is provided with a first temperature gauge 1510. A one-way valve 400, a filter 600 and an expansion valve 700 are arranged on the fifth pipeline 1800, and a third temperature gauge 1810 and a fourth temperature gauge 1820 are respectively provided on both sides of the expansion valve 700 on the fifth pipeline 1800, The sixth pipe 1900 is provided with a second check valve 800, the eighth pipe 2100 is provided with a fifth temperature gauge 2110, the eleventh pipe 2400 is provided with a third one-way valve 1100, and the twelfth pipe A fourth one-way valve 1200 is provided on the 2500.

In the heating process, the high-temperature air from the compressor 100 enters the accumulator 500 through the first pipeline 1400, the four-way valve 200, the in-vehicle radiator 300, the first one-way valve 400, and the fourth pipeline 1700, Then it flows out from the accumulator 500 through the filter 600, the expansion valve 700, the second one-way valve 800 and the seventh pipeline 2000 and enters the off-vehicle heat exchanger group consisting of at least one heat exchanger 910 connected in parallel or in series 900, and then flow out from the off-vehicle heat exchanger group 900 through the eighth pipeline 2100 and the four-way valve 200 into the gas-liquid separator 1000, and finally return to the compressor 100 from the gas-liquid separator 1000 through the tenth pipeline 2300 to complete One cycle, parallel or series heat exchangers 910 are arranged side by side at the air inlet 1300. When the temperature is low in winter, the stable operation of the heating system is realized by switching between different heat exchangers between frosting and defrosting. .

In the cooling process, the high-temperature air from the compressor 100 enters the off-vehicle heat exchanger group 900 composed of at least one parallel or series heat exchanger 910 through the four-way valve 200 and the eighth pipeline 2100, The outflow from the off-vehicle heat exchanger group 900 passes through the seventh pipeline 2000 , the third one-way valve 1100 and the fourth pipeline 1700 into the accumulator 500 , and then flows out from the accumulator 500 through the filter 600 and the expansion valve 700 , The twelfth pipeline 2500 flows into the radiator 300 in the vehicle, and then flows out from the radiator 300 in the vehicle and flows into the gas-liquid separator 1000 through the second pipeline 1500, the four-way valve 200 and the ninth pipeline 2200, and finally from the gas-liquid The outflow from the separator 1000 returns to the compressor 100 through the tenth pipeline 2300 to complete a cycle. By expanding the heat dissipation area of the radiator, the temperature difference between the evaporator and the condenser is effectively reduced, and the system efficiency is improved.

The electric vehicle heat pump air conditioning system includes a heat recovery system that can recover the heat generated by the battery, its battery management unit and the motor during operation. The heat recovery system includes a compressor heat exchanger 2610, a pump 2650 and a parallel connection outside the vehicle The recovery heat exchanger bank 2670 outside the heat exchanger bank 900.

The compressor heat exchanger 2610 is arranged in parallel on one side of the compressor 100. Due to the recovery of heat from the compressor, the outlet of the compressor heat exchanger 2610 is connected to the inlet of the battery and its battery management unit and the motor 2630 through the first recovery pipe 2620. The inlet of the pump 2650 is communicated with the outlet of the battery and its battery management unit and the motor 2630 through the second recovery pipe 2640, and the inlet of the recovery heat exchanger group 2670 is communicated with the outlet of the pump 2650 through the third recovery pipe 2660. The outlet of the heat exchanger group 2670 is communicated with the inlet of the compressor heat exchanger 2610 through the fourth recovery pipe 2680, and the recovery heat exchanger group 2670 is composed of at least one recovery heat exchanger 2671 connected in parallel or in series.

The above structure can recover the heat generated by the battery, its battery management unit and the motor during the working process, improve the utilization rate of heat, avoid heat waste, and be environmentally friendly.

To sum up, the off-vehicle heat exchanger group of the present invention is composed of at least one heat exchanger connected in parallel or in series. Adopting this structure not only effectively improves the refrigeration and refrigeration efficiency of the system, but also has good defrosting and defogging performance. , which improves the driver's comfort in the electric vehicle, and also ensures that the driver has a good field of vision, which further improves the safety of driving; in addition, the electric vehicle heat pump air conditioning system includes a battery and its battery management The heat recovery system that recovers the heat emitted by the unit and the motor during the working process can recover the heat generated by the battery, its battery management unit and the motor during the working process, avoiding energy waste and being environmentally friendly.

The foregoing has shown and described the basic principles, main features and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited by the above-mentioned embodiments. The above-mentioned embodiments and descriptions only illustrate the principle of the present invention. Such changes and improvements fall within the scope of the claimed invention. The claimed scope of the present invention is defined by the appended claims and their equivalents.

Claims (3)

1. An electric vehicle heat pump air conditioning system with a heat recovery system, comprising a compressor, a high and low pressure controller is arranged on the compressor; an in-vehicle radiator, the in-vehicle radiator communicates with the air outlet of the compressor through a four-way valve; a liquid storage tank, the liquid outlet of the liquid storage tank is communicated with the radiator in the vehicle; An off-vehicle heat exchanger group, the off-vehicle heat exchanger group is communicated with the liquid inlet or the liquid outlet of the liquid storage tank; A gas-liquid separator, the air inlet of the gas-liquid separator is communicated with the outside heat exchanger group or the car radiator through a four-way valve, and the air outlet of the gas-liquid separator is connected with the air inlet of the compressor connected; It is characterized in that the electric vehicle heat pump air conditioning system includes a heat recovery system capable of recovering the heat emitted by the battery, the battery management unit and the motor during the working process; The heat recovery system includes a compressor heat exchanger, the compressor heat exchangers are arranged in parallel on one side of the compressor, and the outlet of the compressor heat exchanger is communicated with the inlet of the battery, the battery management unit and the motor through the first recovery pipe; a pump, the inlet of the pump is communicated with the outlet of the battery, the battery management unit and the motor through the second recovery pipe; A recovery heat exchanger group connected in parallel to the outside of the off-vehicle heat exchanger group, the inlet of the recovery heat exchanger group is connected to the outlet of the pump through a third recovery pipe, and the outlet of the recovery heat exchanger group is connected through a fourth recovery pipe. The recovery pipeline is communicated with the inlet of the heat exchanger of the compressor, and the recovery heat exchanger group is composed of at least one recovery heat exchanger connected in parallel or in series. 2 . The electric vehicle heat pump air conditioning system with a heat recovery system according to claim 1 , wherein the compressor is communicated with the first interface of the four-way valve through a first pipeline, and the inside of the vehicle The radiator is communicated with the second interface of the four-way valve through the second pipeline, the liquid inlet of the liquid storage tank is communicated with the radiator in the vehicle through the third pipeline and the fourth pipeline, and the liquid outlet of the liquid storage tank The port is communicated with the off-vehicle heat exchanger group through the fifth pipeline, the sixth pipeline and the seventh pipeline, and the off-vehicle heat exchanger group is communicated with the third interface of the four-way valve through the eighth pipeline, and the gas-liquid The air inlet of the separator is communicated with the fourth interface of the four-way valve through the ninth pipe, the air inlet of the compressor is communicated with the air outlet of the gas-liquid separator through the tenth pipe, and the heat exchange outside the vehicle The device group is communicated with the liquid inlet of the liquid storage tank through the seventh pipeline and the eleventh pipeline, and the liquid outlet of the liquid storage tank is communicated with the radiator in the vehicle through the fifth pipeline and the twelfth pipeline. 3. An electric vehicle heat pump air conditioning system with a heat recovery system as claimed in claim 2, characterized in that: a barometer is arranged on the first pipe, and a first pipe is arranged on the second pipe A temperature gauge, a second temperature gauge is arranged on the in-vehicle radiator, a first one-way valve is arranged on the third pipeline, a filter and an expansion valve are arranged on the fifth pipeline, The fifth pipe is provided with a third temperature gauge and a fourth temperature gauge on both sides of the expansion valve, a second one-way valve is provided on the sixth pipe, and a fifth pipe is provided on the eighth pipe. In the thermometer, a third one-way valve is arranged on the eleventh pipeline, and a fourth one-way valve is arranged on the twelfth pipeline.