CN106042827B - Electric automobile air conditioning system, electric automobile and control method of electric automobile air conditioning system - Google Patents
Electric automobile air conditioning system, electric automobile and control method of electric automobile air conditioning system Download PDFInfo
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- CN106042827B CN106042827B CN201610393905.9A CN201610393905A CN106042827B CN 106042827 B CN106042827 B CN 106042827B CN 201610393905 A CN201610393905 A CN 201610393905A CN 106042827 B CN106042827 B CN 106042827B
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- electric automobile
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- 238000004378 air conditioning Methods 0.000 title claims abstract description 97
- 238000000034 method Methods 0.000 title claims abstract description 22
- 239000012530 fluid Substances 0.000 claims description 25
- 239000007788 liquid Substances 0.000 claims description 16
- 230000001502 supplementing effect Effects 0.000 claims description 7
- 238000000926 separation method Methods 0.000 claims description 4
- 238000010438 heat treatment Methods 0.000 abstract description 28
- 238000010257 thawing Methods 0.000 abstract description 3
- 239000003507 refrigerant Substances 0.000 description 61
- 238000010586 diagram Methods 0.000 description 9
- 230000000694 effects Effects 0.000 description 6
- 239000007789 gas Substances 0.000 description 6
- 238000005057 refrigeration Methods 0.000 description 5
- 239000002826 coolant Substances 0.000 description 4
- 238000002156 mixing Methods 0.000 description 3
- 230000005611 electricity Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000002485 combustion reaction Methods 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000007701 flash-distillation Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000002918 waste heat Substances 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60H—ARRANGEMENTS OF HEATING, COOLING, VENTILATING OR OTHER AIR-TREATING DEVICES SPECIALLY ADAPTED FOR PASSENGER OR GOODS SPACES OF VEHICLES
- B60H1/00—Heating, cooling or ventilating [HVAC] devices
- B60H1/00007—Combined heating, ventilating, or cooling devices
- B60H1/00021—Air flow details of HVAC devices
- B60H1/00028—Constructional lay-out of the devices in the vehicle
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60H—ARRANGEMENTS OF HEATING, COOLING, VENTILATING OR OTHER AIR-TREATING DEVICES SPECIALLY ADAPTED FOR PASSENGER OR GOODS SPACES OF VEHICLES
- B60H1/00—Heating, cooling or ventilating [HVAC] devices
- B60H1/00357—Air-conditioning arrangements specially adapted for particular vehicles
- B60H1/00385—Air-conditioning arrangements specially adapted for particular vehicles for vehicles having an electrical drive, e.g. hybrid or fuel cell
- B60H1/00392—Air-conditioning arrangements specially adapted for particular vehicles for vehicles having an electrical drive, e.g. hybrid or fuel cell for electric vehicles having only electric drive means
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60H—ARRANGEMENTS OF HEATING, COOLING, VENTILATING OR OTHER AIR-TREATING DEVICES SPECIALLY ADAPTED FOR PASSENGER OR GOODS SPACES OF VEHICLES
- B60H1/00—Heating, cooling or ventilating [HVAC] devices
- B60H1/00485—Valves for air-conditioning devices, e.g. thermostatic valves
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60H—ARRANGEMENTS OF HEATING, COOLING, VENTILATING OR OTHER AIR-TREATING DEVICES SPECIALLY ADAPTED FOR PASSENGER OR GOODS SPACES OF VEHICLES
- B60H1/00—Heating, cooling or ventilating [HVAC] devices
- B60H1/32—Cooling devices
- B60H1/3204—Cooling devices using compression
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60H—ARRANGEMENTS OF HEATING, COOLING, VENTILATING OR OTHER AIR-TREATING DEVICES SPECIALLY ADAPTED FOR PASSENGER OR GOODS SPACES OF VEHICLES
- B60H1/00—Heating, cooling or ventilating [HVAC] devices
- B60H1/32—Cooling devices
- B60H1/3204—Cooling devices using compression
- B60H1/3223—Cooling devices using compression characterised by the arrangement or type of the compressor
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60H—ARRANGEMENTS OF HEATING, COOLING, VENTILATING OR OTHER AIR-TREATING DEVICES SPECIALLY ADAPTED FOR PASSENGER OR GOODS SPACES OF VEHICLES
- B60H1/00—Heating, cooling or ventilating [HVAC] devices
- B60H1/32—Cooling devices
- B60H1/3204—Cooling devices using compression
- B60H1/3227—Cooling devices using compression characterised by the arrangement or the type of heat exchanger, e.g. condenser, evaporator
Landscapes
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Mechanical Engineering (AREA)
- Life Sciences & Earth Sciences (AREA)
- Sustainable Development (AREA)
- Sustainable Energy (AREA)
- Air-Conditioning For Vehicles (AREA)
Abstract
The invention provides an air conditioning system of an electric automobile, which comprises a compressor, a four-way valve, an external heat exchanger, a first vehicle internal heat exchanger, a second vehicle internal heat exchanger, a first pipeline, a second pipeline, a third pipeline, a fourth pipeline, a first control valve and a second control valve, wherein the first pipeline is connected with the first vehicle internal heat exchanger; when the heat exchanger outside the vehicle needs defrosting, a first port of the four-way valve is communicated with a fourth port, a second port of the four-way valve is communicated with a third port, and a second branch is communicated with a first pipeline and a second pipeline; the first control valve and the second control valve control the third pipeline and the fourth pipeline to be communicated, and the first branch is disconnected with the first pipeline and the second pipeline. The invention also provides an electric automobile and a control method of the air conditioning system of the electric automobile. The electric automobile control system, the electric automobile and the control method of the air conditioning system of the electric automobile enable continuous heating in an automobile to be achieved in the defrosting process of the heat exchanger outside the automobile, and comfort in the automobile is guaranteed.
Description
Technical field
The present invention relates to electric vehicle engineering field, more particularly to a kind of electric automobile air-conditioning system, electric vehicle with
And the control method of electric automobile air-conditioning system.
Background technology
Pure electric automobile is compared with traditional internal combustion engine and hybrid vehicle, due to not having the waste heat of engine
It can utilize, automotive air-conditioning system is generally by the way of single cold air-conditioning+PTC (thermistor).When heating in winter, use
PTC electrical heating carries out heating, but the electrically heated efficiency of PTC is very low (highest is not more than 1), therefore winter air-conditioning is heating
It during mode operation, needs to expend a large amount of electric energy and is heated, the course continuation mileage of electric vehicle can be greatly shortened in this way.In pure electricity
Drawbacks described above can be overcome by carrying out heating using heat pump air conditioning system on electrical automobile, but heat pump air conditioning system low temperature ring in winter
Operation can be there are heating capacity deficiency and the easy frosting of vehicle external heat exchanger in border, and air-conditioning needs to be switched to defrosting by heating mode
Pattern carries out timely defrost, at this point, interior side will stop heating, vehicle interior temperature reduces during defrost, influences heating effect, interior
Comfort is poor.
Invention content
In view of the air-conditioning system of the prior art during defrost can not continuous heating operation the problem of, the purpose of the present invention exists
In the control method for providing a kind of electric automobile air-conditioning system, electric vehicle and electric automobile air-conditioning system, ensure the defrost phase
Between heating effect, improve interior comfort.
To achieve the above object, the present invention adopts the following technical scheme that：
A kind of electric automobile air-conditioning system, including compressor, four-way valve, vehicle external heat exchanger, the first interior heat exchanger, second
Interior heat exchanger, the first pipeline, the second pipeline, third pipeline and the 4th pipeline and the first control valve and the second control valve；Institute
It states the first control valve, the first interior heat exchanger, second control valve to be sequentially connected in series to form the first branch, second vehicle
Interior heat exchanger forms the second branch；
The exhaust outlet of the compressor connects the first port of the four-way valve, the second port connection institute of the four-way valve
State the first pipeline；The first branch and the second branch be connected in parallel on first pipeline and second pipeline it
Between, the first end of vehicle external heat exchanger described in second pipeline connection, the second end of the vehicle external heat exchanger connects the four-way
4th port of valve, the third port of the four-way valve connect the air entry of the compressor；
The third pipeline is connected to the described first interior first end of heat exchanger and the first end of the vehicle external heat exchanger
Between, the 4th pipeline be connected to the described first interior heat exchanger second end and the vehicle external heat exchanger second end it
Between；
When the vehicle external heat exchanger needs defrost, the first port of the four-way valve is connected with the 4th port, second end
Mouth is connected with third port, the second branch and first pipeline and second pipeline connection；First control valve
The third pipeline and the 4th pipeline conducting, the first branch and first pipeline are controlled with second control valve
It is disconnected with second pipeline；When the vehicle external heat exchanger is freezed or is heated, by first control valve and
Second control valve controls the third pipeline and the 4th pipeline to close.
First control valve is the first triple valve in one of the embodiments, and second control valve is the two or three
Port valve；
First valve port of first triple valve connects first pipeline, and the second valve port of first triple valve is successively
Connect the first valve port of the described first interior heat exchanger and second triple valve, the second valve port connection of second triple valve
Second pipeline；The third valve port of first triple valve is connected to the of the vehicle external heat exchanger by the third pipeline
One end；The third valve port of second triple valve is connected to the second end of the vehicle external heat exchanger by the 4th pipeline.
It is additionally provided in the second branch in one of the embodiments, positioned at one end of the described second interior heat exchanger
The first electronic valve.
The check valve being arranged on the third pipeline is further included in one of the embodiments,.
Further include first throttling device in one of the embodiments, first throttling device one end connection described the
The first end of three pipelines and the vehicle external heat exchanger, the other end of the first throttling device connect second pipeline.
Second throttling device is further included in one of the embodiments, and the third pipeline is filled by the described second throttling
Put the first end for being connected to the vehicle external heat exchanger.
Fluid reservoir is further included in one of the embodiments, and the first end of the fluid reservoir is filled by the described second throttling
The first end for connecting the vehicle external heat exchanger is put, the second end of the fluid reservoir connects the third pipeline, the fluid reservoir
Third end connects the first throttling device.
Fluid reservoir is further included in one of the embodiments, and the first end of the fluid reservoir connects the vehicle external heat exchanger
First end, the second end of the fluid reservoir connects the third pipeline, and the third end of the fluid reservoir connects the first segment
Flow device.
Second throttling device and flash vessel are further included in one of the embodiments,；The first end of the flash vessel passes through
The second throttling device is connected to the first end of the vehicle external heat exchanger and the third pipeline, the second end of the flash vessel
The first throttling device is connected, the third end of the flash vessel connects the gas supplementing opening of the compressor.
The second electronic valve is further included in one of the embodiments,；Second electronic valve is connected to the flash distillation
Between the third end of device and the gas supplementing opening of the compressor.
The compressor is quasi- double-stage compressor, the birotor twin-stage Gas-supplying enthalpy-increasing pressure of being vortexed in one of the embodiments,
The combination of contracting machine or two single-stage compressors.
First throttling device and second throttling device, the first throttling device are further included in one of the embodiments,
It is connected on the third pipeline, the first throttling device connects second pipeline；One end of the second throttling device
The first end of the vehicle external heat exchanger is connected, the other end of the second throttling device connects second pipeline.
Gas-liquid separator is further included in one of the embodiments, and the gas-liquid separator is connected to the compressor
Between the third port of air entry and the four-way valve.
The described first interior heat exchanger is condenser in one of the embodiments, and the described second interior heat exchanger is steams
Send out device.
The present invention also provides a kind of electric vehicle, including electric automobile air-conditioning system described in any one of the above embodiments.
In addition, the present invention also provides a kind of control method of electric automobile air-conditioning system, for described in any of the above-described
Electric automobile air-conditioning system, including：
Judge whether the vehicle external heat exchanger needs defrost, if so, controlling the first port and the 4th of the four-way valve
Port connects, and the second port of the four-way valve is connected with third port；The second branch and first pipeline and described
Second pipeline connection；The third pipeline and the 4th pipeline are controlled by first control valve and second control valve
Conducting, the first branch are disconnected with first pipeline and second pipeline；If it is not, then control the third pipeline and institute
State the closing of the 4th pipeline.
The beneficial effects of the invention are as follows：
The control system of electric automobile of the present invention, the control method of electric vehicle and electric automobile air-conditioning system, pass through
The first interior heat exchanger and the second interior heat exchanger are arranged in parallel in air duct in the car so that in the process of vehicle external heat exchanger defrost
In, the first interior heat exchanger is as condenser, and for the second interior heat exchanger as evaporator, the refrigerant discharged from compressor is divided into two
Road, first via refrigerant enter vehicle external heat exchanger and carry out defrost, and the second road refrigerant enters the first interior heat exchanger by the 4th pipeline
In heated so that can realize interior continuous heating during vehicle external heat exchanger defrost, ensure the defrost phase
Between heating effect, improve interior comfort.
Description of the drawings
Fig. 1 is the schematic diagram of the embodiment one of the electric automobile air-conditioning system of the present invention；
Fig. 2 is the schematic diagram of the embodiment two of the electric automobile air-conditioning system of the present invention；
Fig. 3 is the schematic diagram of the embodiment three of the electric automobile air-conditioning system of the present invention；
Fig. 4 is the schematic diagram of the example IV of the electric automobile air-conditioning system of the present invention；
Fig. 5 is the schematic diagram of the embodiment five of the electric automobile air-conditioning system of the present invention；
Fig. 6 is the schematic diagram of the embodiment six of the electric automobile air-conditioning system of the present invention；
Fig. 7 is the schematic diagram of electric automobile air-conditioning system in cooling mode in Fig. 6；
Fig. 8 is the schematic diagram of electric automobile air-conditioning system in a heating mode in Fig. 6；
Fig. 9 is schematic diagram of the electric automobile air-conditioning system under defrost pattern in Fig. 6.
Specific embodiment
In order to make technical scheme of the present invention clearer, below in conjunction with attached drawing, to the electric automobile air conditioner system of the present invention
The control method of system, electric vehicle and electric automobile air-conditioning system is described in further detail.It should be appreciated that this place is retouched
The specific embodiment stated is only explaining that the present invention is not intended to limit the present invention.
As shown in Figure 1, the electric automobile air-conditioning system of the present embodiment one, including being changed outside compressor 100, four-way valve 200, vehicle
The 400, second interior heat exchanger 500 of hot the 300, first car of device heat exchanger, first throttling device 810, check valve 750, first are controlled
Valve 710 processed, the second control valve 720, the first electronic valve 730,930 and first pipeline 610 of gas-liquid separator, the second pipeline
620th, 630 and the 4th pipeline 640 of third pipeline.Wherein, the first control valve 710 and the second control valve 720 are divided into the first car
The both ends of heat exchanger 400, first the 710, first interior 400 and second control valve 720 of heat exchanger of control valve are sequentially connected in series to be formed
The first branch.Second interior heat exchanger 500 forms the second branch, specifically, the second first electronic valve of the interior series connection of heat exchanger 500
Door 730 forms the second branch.First electronic valve 730 is arranged on one end of the second interior heat exchanger 500, for controlling the second vehicle
The conducting of interior heat exchanger 500 and the first pipeline 610 and the second pipeline 620 is non-conduction.In the present embodiment, the first electronic valve
730 can be motor-driven valve or solenoid valve.First interior heat exchanger 400 can be interior condenser, and the second interior heat exchanger 500 can
Think interior evaporator.
The first port A of the exhaust outlet connection four-way valve 200 of compressor 100, the second port B connections the of four-way valve 200
One pipeline 610；The first branch and the second branch are connected in parallel between the first pipeline 610 and the second pipeline 620；Second pipeline
The first end of 620 connection vehicle external heat exchangers 300, the 4th port D of the second end connection four-way valve 200 of vehicle external heat exchanger 300, four
The air entry of the third port C connection compressors 100 of port valve 200.Gas-liquid separator 930 is connected to the air entry of compressor 100
Between the third port C of the four-way valve 200, for ensureing the suction superheat of compressor 100, ensure compressor 100
Normal operation.In the present embodiment, compressor 100 can be common 100 machine of single-stage compressor.
Third pipeline 630 be connected to the first interior heat exchanger 400 first end and vehicle external heat exchanger 300 first end it
Between, the 4th pipeline 640 is connected between the first interior second end of heat exchanger 400 and the second end of vehicle external heat exchanger 300.First
The first end of 810 one end of throttling set connection third pipeline 630 and vehicle external heat exchanger 300, the first throttling device 810 it is another
One end connects the second pipeline 620.Check valve 750 is connected on third pipeline 630, for controlling the refrigerant on third pipeline 630
Flow direction.First throttling device 810 can be electric expansion valve or capillary.
In one embodiment, the first end of the first interior heat exchanger 400 can be to pass through the first control valve 710 and first
One end that pipeline 610 connects, the second end of the first interior heat exchanger 400 can be to pass through the second control valve 720 and the second pipeline
One end of 620 connections.
At this point, when vehicle external heat exchanger 300 needs defrost, the first port A of four-way valve 200 is connected with the 4th port D, four
The second port B of port valve 200 is connected with third port C.By controlling the first control valve 710 and the second control valve 720 so that the
Three pipelines 630 and the 4th pipeline 640 are connected, and the first branch is disconnected with the first pipeline 610 and the second pipeline 620.Pass through control
Make the conducting of the first electronic valve 730 so that the second interior heat exchanger 500 is connected with the first pipeline 610 and the second pipeline 620.
At this point, the refrigerant discharged from compressor 100 is divided into two-way, wherein, first via refrigerant enters in vehicle external heat exchanger 300 to being changed outside vehicle
Hot device 300 carries out defrost, and the second road refrigerant, which is entered by the 4th pipeline 640 in the first interior heat exchanger 400, to be heated, and is ensured
Interior heating effect during defrost.Later, the second road refrigerant returns to the first of vehicle external heat exchanger 300 through third pipeline 630
End returns to the air-breathing of compressor 100 through the interior heat exchanger 500 of first throttling device 810, second after being mixed with first via refrigerant
Mouthful.
In another embodiment, the first end of the first interior heat exchanger 400 may be by the second control valve 720 with
One end of second pipeline 620 connection, the second end of the first interior heat exchanger 400 may be by the first control valve 710 and the
One end of one pipeline 610 connection.Its defrost process can be found in described above.
When the air-conditioning system needs refrigeration, the first port A of four-way valve 200 is connected with the 4th port D, second port B
It is connected with third port C.By the conducting for controlling the first electronic valve 730 so that the second interior first pipe of the connection of heat exchanger 500
610 and second pipeline 620 of road.Since the refrigerant pressure between first throttling device 810 and vehicle external heat exchanger 300 is higher than the first vehicle
The pressure of interior heat exchanger 400, check valve 750 are in nonconducting state, and third pipeline 630 is in non-conduction, the first interior heat exchange
400 and first pipeline 610 of device and the second pipeline 620 are also at nonconducting state.Pass through 710 and second control of the first control valve of control
Valve 720 processed so that the 4th pipeline is also at nonconducting state.At this point, the refrigerant discharged from compressor 100 changes followed by outdoor
The air entry of compressor 100 is returned to after the interior heat exchanger 500 of hot device, first throttling device 810, second, completes refrigeration cycle.
When the air-conditioning system needs heating, the first port A connection second port B of control four-way valve 200, third port
C connects the 4th port D.Simultaneously by controlling the first control valve 710 and the second control valve 720 so that third pipeline 630 and the 4th
Pipeline 640 is in nonconducting state, and the first interior heat exchanger 400 connects the first pipeline 610 and the second pipeline 620.Pass through control
First electronic valve 730 is in nonconducting state so that the second interior 500 and first pipeline 610 of heat exchanger and the second pipeline 620
In nonconducting state.At this point, the refrigerant discharged from compressor 100 flows through the first interior heat exchanger 400, first throttling device
810 and vehicle external heat exchanger 300 after return to the air entry of compressor 100, so as to complete heating cycle.
In one embodiment, the first control valve 710 can be the first triple valve, and the second control valve 720 can be second
Triple valve.First the first pipeline of valve port a1 connections 610 of the first triple valve, the second valve port b1 of the first triple valve are sequentially connected
First valve port a2 of one 400 and second triple valve of interior heat exchanger, second valve port b2 the second pipelines of connection of the second triple valve
620；The third valve port c1 of first triple valve is connected to the first end of vehicle external heat exchanger 300 by third pipeline 630；Second threeway
The third valve port c2 of valve is connected to the second end of vehicle external heat exchanger 300 by the 4th pipeline 640.
When the first valve port a1 of the first triple valve connects its second valve port b1, and the first valve port a2 connections of the second triple valve
During its second valve port b2, the first interior heat exchanger 400 is connected with the first pipeline 610 and the second pipeline 620.When the first triple valve
When second valve port b1 is connected with its third valve port c1, third pipeline 630 is connected；When the second triple valve the first valve port a2 with its
When three valve port c2 are connected, the 4th pipeline 640 is connected.Therefore, can be set by the first interior 400 both ends of heat exchanger the one or three
Port valve and the on and off of the second triple valve control third pipeline 630 and the 4th pipeline 640, can also control the first car to change
The on and off of hot 400 and first pipeline 610 of device and the second pipeline 620, so as to fulfill air-conditioning system in each operational mode
Under switching.
As shown in Fig. 2, the air-conditioning system of the electric automobile air-conditioning system of the embodiment of the present invention two and above-described embodiment one
Basically identical, the difference lies in the air-conditioning system in the present embodiment further includes second throttling device 820, and third pipeline 630 is logical
The first end that second throttling device 820 is connected to vehicle external heat exchanger 300 is crossed, i.e., is added at the first end of vehicle external heat exchanger 300
One second throttling device 820, second throttling device 820 can be electric expansion valve or capillary.
During the defrost of the air-conditioning system, the refrigerant discharged from compressor 100 is divided into two-way, and first via refrigerant enters
Defrost is carried out in vehicle external heat exchanger 300, the second road refrigerant, which enters in the first interior heat exchanger 400, to be heated, later, the first via
Refrigerant mixes after second throttling device 820 with first via refrigerant, and the refrigerant of mixing is interior through first throttling device 810 and second
Heat exchanger 500 returns to the air entry of compressor 100.By setting second throttling device 820, distribution first via refrigerant can be adjusted
With the flow of the second road refrigerant, so as to further improve air-conditioning system reliability of operation and heat exchange property.The air-conditioning system
In heating or process of refrigerastion, similar to the air-conditioning system in embodiment one, details are not described herein again.
As shown in figure 3, air-conditioning system of the air-conditioning system of this implementation three compared to embodiment one, difference are, this implementation
Air-conditioning system in example further includes fluid reservoir 910, the first end of the first end connection vehicle external heat exchanger 300 of fluid reservoir 910, liquid storage
The second end connection third pipeline 630 of tank 910, the third end connection first throttling device 810 of fluid reservoir 910.
During the defrost of the air-conditioning system, the refrigerant discharged from compressor 100 is divided into two-way, and first via refrigerant enters
Defrost is carried out in vehicle external heat exchanger 300, the second road refrigerant, which enters in the first interior heat exchanger 400, to be heated, and later, two-way is cold
Matchmaker, which enters in fluid reservoir 910, to be mixed, and the refrigerant of mixing is returned to through the interior heat exchanger 500 of first throttling device 810 and second
The air entry of compressor 100.By setting fluid reservoir 910, the refrigerant for adjusting and entering the second interior heat exchanger 500 can be adjusted
Amount, so as to further improve air-conditioning system reliability of operation and heat exchange property.In the heating of the air-conditioning system or process of refrigerastion,
Similar to the air-conditioning system in embodiment one, details are not described herein again.In the present embodiment, compressor 100 can be common single-stage
Compressor.
As shown in figure 4, the air-conditioning system of the present embodiment four, compared to the air-conditioning system in embodiment two, difference exists
In the air-conditioning system of the embodiment further includes fluid reservoir 910, and the first end of fluid reservoir 910 is connected by second throttling device 820
The first end of vehicle external heat exchanger 300, the second end connection third pipeline 630 of fluid reservoir 910, the third end connection of fluid reservoir 910
First throttling device 810.
During the defrost of the air-conditioning system, the refrigerant discharged from compressor 100 is divided into two-way, and first via refrigerant enters
Defrost is carried out in vehicle external heat exchanger 300, the second road refrigerant, which enters in the first interior heat exchanger 400, to be heated, later, the first via
Refrigerant enters after second throttling device 820 in fluid reservoir 910 to be mixed with first via refrigerant, and the refrigerant of mixing is filled through first throttle
Put 810 and second interior heat exchanger 500 return to the air entry of compressor 100.By setting second throttling device 820, can adjust
The flow of section distribution first via refrigerant and the second road refrigerant；By setting fluid reservoir 910, adjusting can be adjusted and enter the second car
The coolant quantity of heat exchanger 500, so as to further improve air-conditioning system reliability of operation and heat exchange property.The system of the air-conditioning system
In heat or process of refrigerastion, similar to the air-conditioning system in embodiment one, details are not described herein again.In the present embodiment, compressor 100 can
Think common single-stage compressor.
As shown in fig. 6, air-conditioning system of the air-conditioning system of the present embodiment six compared to embodiment one, difference, this
Second throttling device 820,920 and second electronic valve 740 of flash vessel are further included in embodiment；Wherein, the of flash vessel 920
One end connects the first end of the vehicle external heat exchanger 300 and third pipeline 630 by second throttling device 820, flash vessel 920
Second end connects first throttling device 810, the gas supplementing opening of the third end connection compressor 100 of flash vessel 920.Second electronic valve
740 are connected between the third end of the flash vessel 920 and the gas supplementing opening of the compressor 100, and the second electronic valve 740 is used for
Whether control air-conditioning system carries out tonifying Qi operation.When needing to carry out tonifying Qi operation, the second electronic valve 740 of control is connected, when
When not needing to carry out tonifying Qi operation, the second electronic valve 740 of control is closed.In the present embodiment, the second electronic valve 740 can be
Solenoid valve or motor-driven valve.Compressor 100 can be the quasi- double-stage compressor that is vortexed, birotor twin-stage Gas-supplying enthalpy-increasing compressor or two
The combination of single-stage compressor.
As shown in fig. 7, when the air-conditioning system needs refrigeration, the first port A of four-way valve 200 is connected with the 4th port D,
Second port B is connected with third port C, by the conducting for controlling the first electronic valve 730 and the second electronic valve 740 so that
Second interior heat exchanger 500 connects the first pipeline 610 and the second pipeline 620.Due to first throttling device 810 and vehicle external heat exchanger
Refrigerant pressure between 300 is higher than the pressure of the first interior heat exchanger 400, and check valve 750 is in nonconducting state, thus, the
Three pipelines 630 and the 4th pipeline 640 are in non-conduction, and the first interior 400 and first pipeline 610 of heat exchanger and the second pipeline
620 are also at nonconducting state.At this point, from compressor 100 discharge refrigerant followed by outdoor heat exchanger, first throttling device
810 enter in flash vessel 920, and refrigerant carries out gas-liquid separation in flash vessel 920, wherein, gaseous coolant passes through the second electronic valve
The gas supplementing opening that door 740 returns to compressor 100, liquid refrigerants by the interior heat exchanger 500 of second throttling device 820 and second into
Freeze in driving, last liquid refrigerants returns to the air entry of compressor 100 by four-way valve 200, completes refrigeration cycle.
As shown in figure 8, when the air-conditioning system needs heating, the first port A connection second ports of control four-way valve 200
B, third port C connect the 4th port D, while by the way that the first valve port a1 and its second valve port b1 of the first triple valve is controlled to lead
Logical, the first valve port a2 of the second triple valve is connected with its second valve port b2 so that 630 and the 4th pipeline 640 of third pipeline is in
Nonconducting state, the first interior heat exchanger 400 connect the first pipeline 610 and the second pipeline 620.By controlling the first electronic valve
730 are in nonconducting state so that the second interior 500 and first pipeline 610 of heat exchanger and the second pipeline 620 are in non-conduction shape
State, meanwhile, the second electronic valve 740 of control is in the conduction state, to realize the tonifying Qi of compressor.At this point, from 100 row of compressor
The refrigerant gone out enters after flowing through the first interior heat exchanger 400, first throttling device 810 in flash vessel 920, and refrigerant is in flash vessel
Gas-liquid separation is carried out in 920 so that liquid refrigerants returns to compressor 100 by second throttling device 820 and vehicle external heat exchanger 300
Air entry, so as to complete heating cycle.Gaseous coolant returns to the gas supplementing opening of compressor 100 by the second electronic valve 740, real
The tonifying Qi of existing compressor 100.
As shown in figure 9, when vehicle external heat exchanger 300 needs defrost, the first port A and the 4th port D of four-way valve 200 connect
Logical, the second port B of four-way valve 200 is connected with third port C；By the second valve port b1 and its third that control the first triple valve
Valve port c1 is connected, and the first valve port a2 of the second triple valve is connected with its third valve port c2 so that 630 and the 4th pipeline of third pipeline
640 conductings, the first interior heat exchanger 400 are disconnected with the first pipeline 610 and the second pipeline 620.By controlling the first electronic valve
730 conducting so that the second interior heat exchanger 500 is connected with the first pipeline 610 and the second pipeline 620, meanwhile, the second electricity of control
Sub- valve 740 is connected.At this point, the refrigerant discharged from compressor 100 is divided into two-way, wherein, first via refrigerant, which enters outside vehicle, to exchange heat
Carry out defrost in device 300 to vehicle external heat exchanger 300, the second road refrigerant by the interior heat exchanger 400 of the 4th pipeline 640 first into
Row heating ensures the heating effect of car during defrost.Later, the second road refrigerant is returned to outside vehicle through third pipeline 630 and is exchanged heat
The first end of device 300 enters after second throttling device 820 in flash vessel 920 after being mixed with first via refrigerant, and refrigerant is flashing
Gas-liquid separation is carried out in device 920.Wherein, it is interior through first throttling device 810, second from the liquid refrigerants that flash vessel 920 is discharged
Heat exchanger 500 returns to the air entry of compressor 100.The gaseous coolant discharged from flash vessel 920 is returned to through the second electronic valve 740
The exhaust outlet of compressor 100 realizes the tonifying Qi of compressor 100.
In addition, during above-mentioned refrigeration, heating or defrost, it, only need to be by the second electronics when Gas-supplying enthalpy-increasing need not be carried out
The closing of valve 740 can be realized.In the present embodiment, the function of Gas-supplying enthalpy-increasing can be realized by using flash vessel 920, so as to
To improve the heating capacity of the air-conditioning system at low ambient temperatures, the delivery temperature of compressor 100 can also be reduced, so as into
One step improves air-conditioning system reliability of operation.
As shown in figure 5, the air-conditioning system of the present embodiment five includes compressor 100, four-way valve 200, vehicle external heat exchanger
300th, the interior heat exchanger 500 of the first interior heat exchanger 400, second, first throttling device 810, second throttling device 820, unidirectional
Valve 750, the first control valve 710, the second control valve 720, the first electronic valve 730,930 and first pipeline of gas-liquid separator
610th, the second pipeline 620,630 and the 4th pipeline 640 of third pipeline.
Wherein, the first control valve 710 and the second control valve 720 are divided into the both ends of the first interior heat exchanger 400, the first control
Interior 400 and second control valve 720 of heat exchanger of valve 710, first processed is sequentially connected in series to form the first branch.Second interior heat exchanger
500 form the second branch, and specifically, the second first electronic valve 730 of the interior series connection of heat exchanger 500 forms the second branch.First
Electronic valve 730 is arranged on one end of the second interior heat exchanger 500, for controlling the second 500 and first pipeline of interior heat exchanger
610 and second pipeline 620 conducting or non-conduction.In the present embodiment, the first electronic valve 730 can be motor-driven valve or electromagnetism
Valve.First interior heat exchanger 400 can be interior condenser, and the second interior heat exchanger 500 can be interior evaporator.
The first port A of the exhaust outlet connection four-way valve 200 of compressor 100, the second port B connections the of four-way valve 200
One pipeline 610；The first branch and the second branch are connected in parallel between the first pipeline 610 and the second pipeline 620；Second pipeline
The first end of 620 connection vehicle external heat exchangers 300, the 4th port D of the second end connection four-way valve 200 of vehicle external heat exchanger 300, four
The air entry of the third port C connection compressors 100 of port valve 200.Gas-liquid separator 930 is connected to the air entry of compressor 100
Between the third port C of the four-way valve 200, for ensureing the suction superheat of compressor 100, ensure compressor 100
Normal operation.In the present embodiment, compressor 100 can be common 100 machine of single-stage compressor.
Third pipeline 630 be connected to the first interior heat exchanger 400 first end and vehicle external heat exchanger 300 first end it
Between, the 4th pipeline 640 is connected between the first interior second end of heat exchanger 400 and the second end of vehicle external heat exchanger 300.First
Throttling set 810 is connected on the third pipeline 630, and first throttling device 810 connects the second pipeline 620；Second throttling dress
The first end of 820 one end connection vehicle external heat exchanger 300 is put, the other end of second throttling device 820 connects the second pipeline 620.
During the defrost of the air-conditioning system, the refrigerant discharged from compressor 100 is divided into two-way, and first via refrigerant enters
Defrost is carried out in vehicle external heat exchanger 300, first via refrigerant enters through second throttling device 820 in the second pipeline 620 later, and second
Road refrigerant, which enters in the first interior heat exchanger 400, to be heated, later, the second throttling of the road refrigerant through first throttling device 810
Enter in the second pipeline 620 afterwards, two-way refrigerant is mixed in the second pipeline 620, and mixed refrigerant is changed through the second car
Hot device 500 returns to the air entry of compressor 100.By setting second throttling device 820, can adjust distribution first via refrigerant and
The flow of second road refrigerant, so as to further improve air-conditioning system reliability of operation and heat exchange property.The system of the air-conditioning system
In heat or process of refrigerastion, similar to the air-conditioning system in embodiment one, details are not described herein again.In the present embodiment, compressor 100 can
Think common single-stage compressor.
One embodiment of the invention additionally provides a kind of electric vehicle, includes the electric automobile air conditioner of any of the above-described embodiment
System.
In addition, one embodiment of the invention additionally provides a kind of control method of electric automobile air-conditioning system, for above-mentioned
The electric automobile air-conditioning system of one embodiment, including：
Judge whether vehicle external heat exchanger 300 needs defrost, if so, control four-way valve 200 first port A with its 4th
Port D is connected, and the second port B of four-way valve 200 is connected with its third port C；The second branch and the first pipeline 610 and the second pipe
Road 620 connects；Third pipeline 630 and the 4th pipeline 640 is controlled to be connected by the first control valve 710 and the second control valve 720, the
One branch is disconnected with the first pipeline 610 and the second pipeline 620；If it is not, 630 and the 4th pipeline 640 of third pipeline is then controlled to close,
The air-conditioning system is heated or is freezed.
Specifically, when judging that vehicle external heat exchanger 300 needs defrost, control four-way valve 200 first port A with its 4th
Port D is connected, and the second port B of four-way valve 200 is connected with its third port C；Meanwhile control the second valve port of the first triple valve
B1 is connected with its third valve port c1, and the first valve port a2 of the second triple valve is connected with its third valve port c2 so that third pipeline 630
It is connected with the 4th pipeline 640, the first interior heat exchanger 400 is disconnected with the first pipeline 610 and the second pipeline 620.Also, same time control
Make the conducting of the first electronic valve 730 so that the second interior heat exchanger 500 is connected with the first pipeline 610 and the second pipeline 620.
When the air-conditioning system needs to carry out tonifying Qi, while the second electronic valve 740 is controlled to be connected.
When judging that vehicle external heat exchanger 300 is freezed, first port A and its 4th end of four-way valve 200 are controlled
Mouth D connections, second port B is connected with its third port C, while the first electronic valve 730 is controlled to be connected so that the second car changes
Hot device 500 connects the first pipeline 610 and the second pipeline 620.Due between first throttling device 810 and vehicle external heat exchanger 300
Refrigerant pressure is higher than the pressure of the first interior heat exchanger 400, and check valve 750 is in nonconducting state, thus, third pipeline 630
Be in non-conduction with the 4th pipeline 640, and the first interior heat exchanger 400 be also at the first pipeline 610 and the second pipeline 620 it is non-
Conducting state.When the air-conditioning system needs to carry out tonifying Qi, while the second electronic valve 740 is controlled to be connected.
When judging that vehicle external heat exchanger 300 is heated, the first port A connection second ends of control four-way valve 200
Mouth B, third port C connects the 4th port D, while the first valve port a1 of the first triple valve is controlled to be connected with its second valve port b1,
First valve port a2 of the second triple valve is connected with its second valve port b2 so that 630 and the 4th pipeline 640 of third pipeline is in non-and leads
Logical state, the first interior heat exchanger 400 connect the first pipeline 610 and the second pipeline 620.By controlling the first electronic valve 730
In nonconducting state so that the second interior 500 and first pipeline 610 of heat exchanger and the second pipeline 620 are in nonconducting state.
When the air-conditioning system needs to carry out tonifying Qi, while control the second electronic valve 740 in the conduction state, to realize compressor
100 tonifying Qi.
Wherein, the control method of the electric automobile air-conditioning system of the present embodiment and the air conditioning for automobiles in above-mentioned each embodiment
The operation principle of system is identical, and specific implementation procedure can be found in described above, and details are not described herein again.
The control system of electric automobile of the present invention, the control method of electric vehicle and electric automobile air-conditioning system, pass through
The first interior heat exchanger and the second interior heat exchanger are arranged in parallel in air duct in the car so that in the process of vehicle external heat exchanger defrost
In, the first interior heat exchanger is as condenser, and for the second interior heat exchanger as evaporator, the refrigerant discharged from compressor is divided into two
Road, first via refrigerant enter vehicle external heat exchanger and carry out defrost, and the second road refrigerant enters the first interior heat exchanger by the 4th pipeline
In heated so that can realize interior continuous heating during vehicle external heat exchanger defrost, ensure the defrost phase
Between heating effect, improve the heat exchange property of the air-conditioning system.
Embodiment described above only expresses the several embodiments of the present invention, and description is more specific and detailed, but simultaneously
Cannot the limitation to the scope of the claims of the present invention therefore be interpreted as.It should be pointed out that for those of ordinary skill in the art
For, without departing from the inventive concept of the premise, various modifications and improvements can be made, these belong to the guarantor of the present invention
Protect range.Therefore, the protection domain of patent of the present invention should be determined by the appended claims.
Claims (16)
1. a kind of electric automobile air-conditioning system, which is characterized in that including compressor (100), four-way valve (200), vehicle external heat exchanger
(300), the first interior heat exchanger (400), the second interior heat exchanger (500), the first pipeline (610), the second pipeline (620), the
Three pipelines (630) and the 4th pipeline (640) and the first control valve (710) and the second control valve (720)；First control valve
(710), the described first interior heat exchanger (400), second control valve (720) are sequentially connected in series to form the first branch, and described the
Two interior heat exchangers (500) form the second branch；
The exhaust outlet of the compressor (100) connects the first port of the four-way valve (200), and the of the four-way valve (200)
Two-port netwerk connects first pipeline (610)；The first branch and the second branch are connected in parallel on first pipe
Between road (610) and second pipeline (620), second pipeline (620) connects the first of the vehicle external heat exchanger (300)
End, the second end of the vehicle external heat exchanger (300) connect the 4th port of the four-way valve (200), the four-way valve (200)
Third port connects the air entry of the compressor (100)；
The third pipeline (630) is connected to the first end of the described first interior heat exchanger (400) and the vehicle external heat exchanger
(300) between first end, the 4th pipeline (640) is connected to second end and the institute of the described first interior heat exchanger (400)
Between the second end for stating vehicle external heat exchanger (300)；
When (300) device that exchanges heat outside the vehicle needs defrost, the first port of the four-way valve (200) is connected with the 4th port,
Second port is connected with third port, and the second branch connects with first pipeline (610) and second pipeline (620)
It is logical；First control valve (710) and second control valve (720) control the third pipeline (630) and the 4th pipe
Road (640) is connected, and the first branch is disconnected with first pipeline and second pipeline；When the vehicle external heat exchanger
(300) when being freezed or heated, the third pipeline is controlled by first control valve and second control valve
It is closed with the 4th pipeline.
2. electric automobile air-conditioning system according to claim 1, which is characterized in that first control valve (710) is the
One triple valve, second control valve (720) are the second triple valve；
First valve port of first triple valve connects first pipeline (610), the second valve port of first triple valve according to
Secondary the described first interior heat exchanger (400) of connection and the first valve port of second triple valve, the second of second triple valve
Valve port connects second pipeline (620)；The third valve port of first triple valve is connected to by the third pipeline (630)
The first end of the vehicle external heat exchanger (300)；The third valve port of second triple valve is connected by the 4th pipeline (640)
To the second end of the vehicle external heat exchanger (300).
3. electric automobile air-conditioning system according to claim 1, which is characterized in that be additionally provided with position in the second branch
The first electronic valve (730) in one end of the described second interior heat exchanger (500).
4. electric automobile air-conditioning system according to claim 1, which is characterized in that further include and be arranged on the third pipeline
(630) check valve (740) on.
5. electric automobile air-conditioning system according to claim 1, which is characterized in that first throttling device (810) is further included,
Described first throttling device (810) one end connects the first end of the third pipeline (630) and the vehicle external heat exchanger (300),
The other end of the first throttling device (810) connects second pipeline (620).
6. electric automobile air-conditioning system according to claim 5, which is characterized in that second throttling device (820) is further included,
The third pipeline (630) is connected to the first end of the vehicle external heat exchanger (300) by the second throttling device (820).
7. electric automobile air-conditioning system according to claim 6, which is characterized in that further include fluid reservoir (910), the storage
The first end of flow container (910) connects the first end of the vehicle external heat exchanger (300), institute by the second throttling device (820)
The second end for stating fluid reservoir (910) connects the third pipeline (630), the third end connection of the fluid reservoir (910) described the
One throttling set (810).
8. electric automobile air-conditioning system according to claim 5, which is characterized in that further include fluid reservoir (910), the storage
The first end of flow container (910) connects the first end of the vehicle external heat exchanger (300), the second end connection of the fluid reservoir (910)
The third pipeline (630), the third end of the fluid reservoir (910) connect the first throttling device (810).
9. electric automobile air-conditioning system according to claim 5, which is characterized in that further include second throttling device (820)
With flash vessel (920)；The first end of the flash vessel (920) is connected to by the second throttling device (820) outside the vehicle
The first end of heat exchanger (300) and the third pipeline (630), the second end of the flash vessel (920) connect the first segment
Device (810) is flowed, the third end of the flash vessel (920) connects the gas supplementing opening of the compressor (100).
10. electric automobile air-conditioning system according to claim 9, which is characterized in that further include the second electronic valve
(740)；Second electronic valve (740) is connected to the third end of the flash vessel (920) and the benefit of the compressor (100)
Between gas port.
11. electric automobile air-conditioning system according to claim 9, which is characterized in that the compressor (100) is accurate to be vortexed
The combination of double-stage compressor, birotor twin-stage Gas-supplying enthalpy-increasing compressor or two single-stage compressors.
12. electric automobile air-conditioning system according to claim 1, which is characterized in that further include first throttling device (810)
With second throttling device (820), the first throttling device (810) is connected on the third pipeline (630), the first segment
It flows device (810) and connects second pipeline (620)；One end of the second throttling device (820) connects and exchanges heat outside the vehicle
The first end of device (300), the other end of the second throttling device (820) connect second pipeline (620).
13. according to claim 1-12 any one of them electric automobile air-conditioning systems, which is characterized in that further include gas-liquid separation
Device (930), the gas-liquid separator (930) are connected to the of the air entry of the compressor (100) and the four-way valve (200)
Between three ports.
14. according to claim 1-12 any one of them electric automobile air-conditioning systems, which is characterized in that first car changes
Hot device is condenser, and the described second interior heat exchanger is evaporator.
15. a kind of electric vehicle, which is characterized in that including claim 1-14 any one of them electric automobile air-conditioning systems.
16. a kind of control method of electric automobile air-conditioning system, which is characterized in that for claim 1-14 any one of them
Electric automobile air-conditioning system, including：
Judge whether the vehicle external heat exchanger needs defrost, if so, controlling first port and the 4th port of the four-way valve
Connection, the second port of the four-way valve are connected with third port；The second branch and first pipeline and described second
Pipeline connection；The third pipeline and the 4th pipeline is controlled to lead by first control valve and second control valve
Logical, the first branch is disconnected with first pipeline and second pipeline；If it is not, then control the third pipeline and described
4th pipeline is closed.
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| CN107139684B (en) * | 2017-05-19 | 2023-09-01 | 深圳市科泰新能源车用空调技术有限公司 | Automobile air conditioning system |
| CN108068577B (en) * | 2017-12-06 | 2020-05-22 | 珠海格力电器股份有限公司 | Heat pump air conditioning system, electric automobile and control method of electric automobile |
| CN108422829B (en) * | 2018-03-20 | 2023-07-14 | 上海加冷松芝汽车空调股份有限公司 | New energy bus comprehensive thermal management system suitable for combustible working medium |
| CN108515825B (en) * | 2018-03-22 | 2020-10-09 | 安徽江淮汽车集团股份有限公司 | Two-stage compression automobile air conditioning system and control method thereof |
| CN110843465A (en) * | 2019-12-19 | 2020-02-28 | 海拉（厦门）电气有限公司 | Multi-channel cooling valve and electric vehicle cooling system |
| CN111319426B (en) * | 2020-03-31 | 2024-11-05 | 上海加冷松芝汽车空调股份有限公司 | Air conditioning system and automobile |
| CN111688443B (en) * | 2020-06-15 | 2024-05-10 | 珠海格力电器股份有限公司 | Automobile air conditioning system and control method |
| CN112339525B (en) * | 2020-11-10 | 2022-03-08 | 中国科学院广州能源研究所 | Electric automobile synthesizes thermal management system |
| CN115742685A (en) * | 2022-11-07 | 2023-03-07 | 王胜平 | Cold and hot system of low-temperature heat pump of new energy electric automobile and control method of cold and hot system |
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