CN108215720A - A kind of electric automobile heat-pump air-conditioning and Defrost method to be defrosted using regenerative apparatus - Google Patents
A kind of electric automobile heat-pump air-conditioning and Defrost method to be defrosted using regenerative apparatus Download PDFInfo
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- CN108215720A CN108215720A CN201711383398.1A CN201711383398A CN108215720A CN 108215720 A CN108215720 A CN 108215720A CN 201711383398 A CN201711383398 A CN 201711383398A CN 108215720 A CN108215720 A CN 108215720A
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- heat
- heat exchanger
- regenerative
- regenerative apparatus
- solenoid valve
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Classifications
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- 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
- B60H1/3205—Control means therefor
- B60H1/3213—Control means therefor for increasing the efficiency in a vehicle heat pump
-
- 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
- B60H1/00492—Heating, cooling or ventilating [HVAC] devices comprising regenerative heating or cooling means, e.g. heat accumulators
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- 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 discloses a kind of electric automobile heat-pump air-conditioning to be defrosted using regenerative apparatus, including heat pump circuit and regenerative circuit；Heat pump circuit is mainly made of motor compressor, four-way valve, interior heat exchanger, Bidirectional expansion valve and vehicle external heat exchanger；Regenerative circuit is mainly made of regenerative heat exchanger, the first solenoid valve, regenerative apparatus, second solenoid valve and water pump.The invention also discloses a kind of Defrost methods of the electric automobile heat-pump air-conditioning using regenerative apparatus defrosting.The present invention is by adding regenerative circuit, partial heat during by heating mode is stored in regenerative apparatus, in defrosting mode using the heat indoor heat exchanger being stored in accumulation of heat working medium, evaporating temperature is improved, can both improve interior comfort level, avoid the formation of condensed water, eliminate the hidden danger of condensate water atomizing, it is ensured that the safe driving of automobile, and motor compressor suction temperature can be improved, and then outdoor heat exchanger condensation temperature is improved, shorten the defrost time.
Description
Technical field
The present invention relates to a kind of regenerative apparatus for electric automobile heat-pump type air-conditioner defrosting more particularly to one kind in defrosting mould
Interior heat exchange temperature is improved using accumulation of heat working medium heat in regenerative apparatus under formula, interior heat exchanger condensed water is avoided to be formed and carried
Rise the regenerative apparatus of electric automobile air conditioner defrost performance.
Background technology
During winter, pure electric automobile carries out heating due to not having engine to provide waste heat, thus it requires automotive air-conditioning system
Not only there is cooling in summer, also need to undertake winter heating.At present, pure electric automobile mainly uses electrical heating auxiliary air conditioner system
System carries out winter heating, and heating COP is up to 1, therefore winter air-conditioning needs to consume a large amount of electric energy when heating mode is run
It is heated, this course continuation mileage that will greatly shorten electric vehicle.
In order to improve the heating efficiency of pure electric automobile winter heating, also have and heat pump type air conditioner is used in pure electric automobile
System carries out cooling and heating.However, due to heat pump air conditioner, heating efficiency is relatively low at low ambient temperatures and heating mode is got off
The easy frosting of external heat exchanger, air-conditioning need to be switched to defrosting mode by heating mode, carry out defrost in time.Interior side will during defrost
Stop heating, vehicle interior temperature reduces and generates condensed water simultaneously, and interior comfort is deteriorated.System switches back into heating mould from defrosting mode
During formula, the condensed water in air duct on heat exchanger can evaporate rapidly, and atomization causes certain danger on the windshield, to driving,
Therefore the application of traditional heat pump air conditioning system is also subjected to limitation.
Invention content
The object of the present invention is to provide it is a kind of using regenerative apparatus defrost electric automobile heat-pump air-conditioning and Defrost method,
Under heating mode, accumulation of heat working medium flows through interior heat exchanger, is stored in regenerative apparatus after absorbing the heat of interior heat exchanger release；
When being switched to defrosting mode, the accumulation of heat working medium of high temperature flows through interior heat exchanger, improves the temperature of interior evaporation, avoids condensed water
Formation, solve the pure electric automobile air conditioning system heating mode developed at present and safety that when defrosting mode mutually switches brings
Driving problem promotes the defrost performance of air-conditioning system, shortens the defrost time.In addition, when electric vehicle is in the charging stage, open
Air-conditioning system heating mode is opened, carries out accumulation of heat, the course continuation mileage of electric vehicle can be improved.
To achieve the above object, the technical solution adopted by the present invention is：
A kind of electric automobile heat-pump air-conditioning to be defrosted using regenerative apparatus, including heat pump circuit and regenerative circuit；
The heat pump circuit outside motor compressor, four-way valve, interior heat exchanger, Bidirectional expansion valve and vehicle mainly by exchanging heat
Device forms；The four-way valve includes four ports, and the exhaust pipe and air intake duct of the motor compressor connect four-way respectively
The first port and second port of valve, described interior heat exchanger one end connect the third port of four-way valve, and the other end passes through double
It is connect to expansion valve with described vehicle external heat exchanger one end, the vehicle external heat exchanger other end connects the 4th end of four-way valve
Mouthful；
The regenerative circuit is mainly by sequentially connected regenerative heat exchanger, the first solenoid valve, regenerative apparatus, the second electromagnetism
Valve and water pump composition；The water pump connects the regenerative heat exchanger and forms closed circuit, regenerative heat exchanger package institute
State the part pipeline in the middle part of interior heat exchanger flow.
Preferably, the motor compressor is vortex frequency-changeable compressor；The Bidirectional expansion valve is electronic expansion
Valve；The vehicle external heat exchanger and interior heat exchanger are pipe with small pipe diameter louvered fin pipe heat exchanger；In the heat pump circuit
Refrigerant be R410A or R134a.
Preferably, the accumulation of heat working medium in the regenerative circuit is water；The accumulation of heat working medium is stored in regenerative apparatus；
The regenerative apparatus outsourcing insulating layer；The regenerative apparatus is internally provided with temperature sensor；The regenerative heat exchanger
For double pipe heat exchanger；The water pump is variable frequency pump.
The Defrost method of a kind of electric automobile heat-pump air-conditioning using regenerative apparatus defrosting of the present invention, including following step
Suddenly：
Step 1, accumulation of heat pattern：During electric automobile during traveling, when heat pump air conditioning system is in heating mode, outside vehicle
Heat exchanger is evaporator, and interior heat exchanger is condenser, and interior heat exchanger release heat provides heating for car；Work as regenerative apparatus
When the temperature of interior accumulation of heat working medium is less than setting value, the first solenoid valve and second solenoid valve are opened, and accumulation of heat working medium is acted in water pump
Under flow into regenerative heat exchanger, temperature increases after absorbing the heat in interior heat exchanger, returns in regenerative apparatus, until accumulation of heat fills
The temperature of accumulation of heat working medium is put higher than until setting value, closes the first solenoid valve, second solenoid valve and water pump.
Step 2, heat release defrosting mode：During electric automobile during traveling, when heat pump air conditioning system is in defrosting mode,
Under the switching of four-way valve, interior heat exchanger is changed into evaporator, and vehicle external heat exchanger is changed into condenser, and release heat is outside vehicle
Heat exchanger defrosts；First solenoid valve and second solenoid valve are opened, and under the action of water pump, the accumulation of heat working medium of high temperature flows through accumulation of heat and changes
In hot device, heat car heat exchanger is discharged, improves evaporating temperature.
Preferably, the step 1 further includes：
When electric vehicle is in the charging stage, the heating mode of air-conditioning system is opened, vehicle external heat exchanger is evaporator, vehicle
Interior heat exchanger is condenser；First solenoid valve and second solenoid valve are opened, and accumulation of heat working medium flows into regenerative heat exchange under water pump effect
In device, temperature increases after absorbing the heat in interior heat exchanger, returns in regenerative apparatus, until accumulation of heat working medium in regenerative apparatus
Until temperature is higher than setting value, the first solenoid valve, second solenoid valve and water pump are closed, simultaneously closes off air-conditioning system.
Compared with prior art, the present invention it has the following advantages that：The present invention is by adding regenerative circuit, by heating mode
When partial heat be stored in regenerative apparatus, changed in defrosting mode using the heat car being stored in accumulation of heat working medium
Hot device can improve evaporating temperature first, improve interior comfort level, avoid the formation of condensed water, eliminate the hidden of condensate water atomizing
Suffer from, it is ensured that the safe driving of automobile；Secondly motor compressor suction temperature can be improved, and then improves the condensation of vehicle external heat exchanger
Temperature shortens the defrost time；In addition, when electric vehicle is in the charging stage, air-conditioning system heating mode is opened, is stored
Heat can improve the course continuation mileage of electric vehicle.
Description of the drawings
Fig. 1 is the structure diagram of electric automobile heat-pump air-conditioning to be defrosted using regenerative apparatus of the present invention.
Reference sign：1- motor compressors, 2- four-way valves, 3- car heat exchangers, 4- Bidirectional expansion valves, 5- vehicles change outside
Hot device, 6- regenerative heat exchangers, the first solenoid valves of 7-, 8- regenerative apparatus, 9- second solenoid valves, 10- water pumps.
Specific embodiment
To make the objectives, technical solutions, and advantages of the present invention clearer, clear and definite, below in conjunction with the accompanying drawings and specific embodiment party
Formula is described in further details present disclosure.It is understood that specific embodiment described herein is used only for
Explain the present invention rather than limitation of the invention.It also should be noted that it for ease of description, is illustrated only in attached drawing
Part related to the present invention rather than full content.
Fig. 1 shows a kind of electric automobile heat-pump air-conditioning to defrost using regenerative apparatus, is returned including heat pump circuit and accumulation of heat
Road.Heat pump circuit is mainly by 5 groups of motor compressor 1, four-way valve 2, interior heat exchanger 3, Bidirectional expansion valve 4 and vehicle external heat exchanger
Into.Regenerative circuit is mainly made of regenerative heat exchanger 6, the first solenoid valve 7, regenerative apparatus 8, second solenoid valve 9 and water pump 10.
Four-way valve 2 includes four ports, and the exhaust pipe and air intake duct of motor compressor 1 connect two of four-way valve 2 respectively
Port；The third port of interior 3 one end of heat exchanger connection four-way valve 2,4 one end of other end connection Bidirectional expansion valve；Vehicle changes outside
Hot 5 one end of device connects 4 other end of Bidirectional expansion valve, and 5 other end of vehicle external heat exchanger connects the last one port of four-way valve 2.
Motor compressor 1 is preferably vortex frequency-changeable compressor；Bidirectional expansion valve 4 is preferably electric expansion valve；Vehicle changes outside
Hot device 5 and interior heat exchanger 3 are preferably pipe with small pipe diameter louvered fin pipe heat exchanger；Refrigerant in heat pump circuit is preferably
R410A or R134a.
Regenerative heat exchanger 6, the first solenoid valve 7, regenerative apparatus 8, second solenoid valve 9 and water pump 10 are in turn connected into and are closed back
Road, regenerative heat exchanger 6 wrap up the part pipeline in the middle part of interior 3 flow of heat exchanger.
Accumulation of heat working medium in regenerative circuit is preferably water, and accumulation of heat working medium is stored in regenerative apparatus 8,8 outsourcing of regenerative apparatus
Insulating layer, regenerative apparatus 8 are internally provided with temperature sensor, and regenerative heat exchanger 6 is preferably double pipe heat exchanger, and water pump 10 is preferred
For variable frequency pump.
A kind of Defrost method of electric automobile heat-pump air-conditioning using regenerative apparatus defrosting provided by the invention is as follows：
Accumulation of heat pattern：
When electric vehicle is in the charging stage, the heating mode of air-conditioning system is opened, vehicle external heat exchanger 5 is evaporator,
Interior heat exchanger 3 is condenser.First solenoid valve 7 and second solenoid valve 9 are opened, and accumulation of heat working medium flows into storage under the effect of water pump 10
In heat exchanger 6, temperature increases after absorbing the heat in interior heat exchanger 3, returns in regenerative apparatus 8, until in regenerative apparatus 8
Until the temperature of accumulation of heat working medium is higher than setting value, the first solenoid valve 7, second solenoid valve 9 and water pump 10 are closed, simultaneously closes off air-conditioning
System.
During electric automobile during traveling, when heat pump air conditioning system is in heating mode, vehicle external heat exchanger 5 is evaporation
Device, interior heat exchanger 3 are condenser, and interior heat exchanger 3 discharges heat and provides heating for car.Accumulation of heat in regenerative apparatus 8
When the temperature of working medium is less than setting value, the first solenoid valve 7 and second solenoid valve 9 are opened, and accumulation of heat working medium flows down in the effect of water pump 10
Into in regenerative heat exchanger 6, temperature increases after absorbing the heat in interior heat exchanger 3, returns in regenerative apparatus 8, until accumulation of heat fills
The temperature of accumulation of heat working medium in 8 is put higher than until setting value, closes the first solenoid valve 7, second solenoid valve 9 and water pump 10.
Heat release defrosting mode：During electric automobile during traveling, when heat pump air conditioning system is in defrosting mode, in four-way
Under the switching of valve 2, interior heat exchanger 3 is changed into evaporator, and vehicle external heat exchanger 5 is changed into condenser, and release heat is changes outside vehicle
Hot device 5 defrosts.First solenoid valve 7 and second solenoid valve 9 are opened, and under the action of water pump 10, the accumulation of heat working medium of high temperature flows through storage
In heat exchanger 6, release heat car heat exchanger 3 improves evaporating temperature, had both improved interior comfort level, and avoided condensed water
Formation, eliminate the hidden danger of condensate water atomizing, it is ensured that the safe driving of automobile, and 1 air-breathing of motor compressor can be improved
Temperature, and then 5 condensation temperature of outdoor heat exchanger is improved, shorten the defrost time.
By adding regenerative circuit, partial heat during by heating mode is stored in the electric automobile heat-pump air-conditioning of the present invention
In regenerative apparatus 8, in defrosting mode using the heat car heat exchanger 3 being stored in accumulation of heat working medium, it can improve first
Evaporating temperature improves interior comfort level, avoids the formation of condensed water, eliminate the hidden danger of condensate water atomizing, it is ensured that automobile
Safe driving；Secondly 1 suction temperature of motor compressor can be improved, and then improves 5 condensation temperature of vehicle external heat exchanger, shortens defrost
Time；In addition, when electric vehicle is in the charging stage, air-conditioning system heating mode is opened, accumulation of heat is carried out, electronic vapour can be improved
The course continuation mileage of vehicle.
Above-described embodiment is in the art the purpose is to be to allow simply to illustrate that the technical concepts and features of the present invention
Those of ordinary skill can understand present disclosure and implement according to this, and it is not intended to limit the scope of the present invention.It is all
It is the equivalent variation or modification made according to the essence of the content of present invention, should all covers within the scope of the present invention.
Claims (5)
1. a kind of electric automobile heat-pump air-conditioning to be defrosted using regenerative apparatus, it is characterised in that：It is returned including heat pump circuit and accumulation of heat
Road；
The heat pump circuit is mainly by motor compressor, four-way valve, interior heat exchanger, Bidirectional expansion valve and vehicle external heat exchanger group
Into；The four-way valve includes four ports, and the exhaust pipe and air intake duct of the motor compressor connect four-way valve respectively
First port and second port, described interior heat exchanger one end connect the third port of four-way valve, and the other end passes through two-way swollen
Swollen valve is connect with described vehicle external heat exchanger one end, and the vehicle external heat exchanger other end connects the 4th port of four-way valve；
The regenerative circuit mainly by sequentially connected regenerative heat exchanger, the first solenoid valve, regenerative apparatus, second solenoid valve and
Water pump forms；The water pump connects the regenerative heat exchanger and forms closed circuit, and the regenerative heat exchanger wraps up the vehicle
Part pipeline in the middle part of interior heat exchanger flow.
2. a kind of electric automobile heat-pump air-conditioning to be defrosted using regenerative apparatus according to claim 1, it is characterised in that：Institute
The motor compressor stated is vortex frequency-changeable compressor；The Bidirectional expansion valve is electric expansion valve；It exchanges heat outside the vehicle
Device and interior heat exchanger are pipe with small pipe diameter louvered fin pipe heat exchanger；Refrigerant in the heat pump circuit for R410A or
R134a。
3. a kind of electric automobile heat-pump air-conditioning to be defrosted using regenerative apparatus according to claim 1, it is characterised in that：Institute
Accumulation of heat working medium in the regenerative circuit stated is water；The accumulation of heat working medium is stored in regenerative apparatus；Outside the regenerative apparatus
Packet insulating layer；The regenerative apparatus is internally provided with temperature sensor；The regenerative heat exchanger is double pipe heat exchanger；Institute
The water pump stated is variable frequency pump.
4. the Defrost method of a kind of electric automobile heat-pump air-conditioning using regenerative apparatus defrosting, which is characterized in that including following step
Suddenly：
Step 1, accumulation of heat pattern：During electric automobile during traveling, when heat pump air conditioning system is in heating mode, exchange heat outside vehicle
Device is evaporator, and interior heat exchanger is condenser, and interior heat exchanger release heat provides heating for car；When in regenerative apparatus
When the temperature of accumulation of heat working medium is less than setting value, the first solenoid valve and second solenoid valve are opened, and accumulation of heat working medium flows down in water pump effect
Into in regenerative heat exchanger, temperature increases after absorbing the heat in interior heat exchanger, returns in regenerative apparatus, until in regenerative apparatus
Until the temperature of accumulation of heat working medium is higher than setting value, the first solenoid valve, second solenoid valve and water pump are closed.
Step 2, heat release defrosting mode：During electric automobile during traveling, when heat pump air conditioning system is in defrosting mode, four
Under the switching of port valve, interior heat exchanger is changed into evaporator, and vehicle external heat exchanger is changed into condenser, and release heat is exchanges heat outside vehicle
Device defrosts；First solenoid valve and second solenoid valve are opened, and under the action of water pump, the accumulation of heat working medium of high temperature flows through regenerative heat exchanger
In, heat car heat exchanger is discharged, improves evaporating temperature.
5. a kind of Defrost method of electric automobile heat-pump air-conditioning using regenerative apparatus defrosting according to claim 4,
It is characterized in that, step 1 further includes：
When electric vehicle is in the charging stage, the heating mode of air-conditioning system is opened, vehicle external heat exchanger is evaporator, and car changes
Hot device is condenser；First solenoid valve and second solenoid valve are opened, and accumulation of heat working medium is flowed under water pump effect in regenerative heat exchanger,
Temperature increases after absorbing the heat in interior heat exchanger, returns in regenerative apparatus, up to the temperature of accumulation of heat working medium in regenerative apparatus
Until setting value, the first solenoid valve, second solenoid valve and water pump are closed, simultaneously closes off air-conditioning system.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711383398.1A CN108215720A (en) | 2017-12-20 | 2017-12-20 | A kind of electric automobile heat-pump air-conditioning and Defrost method to be defrosted using regenerative apparatus |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711383398.1A CN108215720A (en) | 2017-12-20 | 2017-12-20 | A kind of electric automobile heat-pump air-conditioning and Defrost method to be defrosted using regenerative apparatus |
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| CN108215720A true CN108215720A (en) | 2018-06-29 |
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| CN201711383398.1A Pending CN108215720A (en) | 2017-12-20 | 2017-12-20 | A kind of electric automobile heat-pump air-conditioning and Defrost method to be defrosted using regenerative apparatus |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111121137A (en) * | 2020-01-06 | 2020-05-08 | 中国科学院广州能源研究所 | Novel air source heat pump system and control method thereof |
| CN111720952A (en) * | 2019-03-21 | 2020-09-29 | 珠海格力电器股份有限公司 | Multi-fan air conditioner defrosting method and air conditioner |
| CN112339522A (en) * | 2019-08-08 | 2021-02-09 | 杭州三花研究院有限公司 | Thermal management system |
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| CN207630912U (en) * | 2017-12-20 | 2018-07-20 | 中国科学院广州能源研究所 | A kind of electric automobile heat-pump air-conditioning to be defrosted using regenerative apparatus |
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| JP2005083711A (en) * | 2003-09-10 | 2005-03-31 | Shinko Kogyo Co Ltd | Defrosting device of heat pump type air conditioner and defrosting method |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111720952A (en) * | 2019-03-21 | 2020-09-29 | 珠海格力电器股份有限公司 | Multi-fan air conditioner defrosting method and air conditioner |
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