CN110126584A - Electric automobile air-conditioning system and its Defrost method, operation method, control system - Google Patents
Electric automobile air-conditioning system and its Defrost method, operation method, control system Download PDFInfo
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- CN110126584A CN110126584A CN201910447087.XA CN201910447087A CN110126584A CN 110126584 A CN110126584 A CN 110126584A CN 201910447087 A CN201910447087 A CN 201910447087A CN 110126584 A CN110126584 A CN 110126584A
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- temperature
- storage heater
- conditioning system
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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
- B60H1/00271—HVAC devices specially adapted for particular vehicle parts or components and being connected to the vehicle HVAC unit
- B60H1/00278—HVAC devices specially adapted for particular vehicle parts or components and being connected to the vehicle HVAC unit for the battery
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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
- B60H1/00357—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
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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
- B60H1/00507—Details, e.g. mounting arrangements, desaeration devices
-
- 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
- B60H1/00642—Control systems or circuits; Control members or indication devices for heating, cooling or ventilating devices
-
- 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
- B60H1/00271—HVAC devices specially adapted for particular vehicle parts or components and being connected to the vehicle HVAC unit
- B60H2001/00307—Component temperature regulation using a liquid flow
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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 present invention provides a kind of electric automobile air-conditioning system and its Defrost method, operation method, control system, its air-conditioning system refrigerant circuit connects an accumulation of heat branch, in the car between heat exchanger and throttling set, the other end is connected between throttling set and vehicle outer heat-exchanger for accumulation of heat branch one end connection；Accumulation of heat branch road is in series with storage heater and flow control valve；Electric car is mounted with power battery, and the power battery of storage heater and electric car has heat exchanging relation；Using the above scheme; defrost rationally can be carried out to air-conditioning system using accumulation of heat branch; the working efficiency of electric automobile power battery can be improved; the problem of can solve electric automobile air-conditioning system winter defrost low efficiency again; and it is not shut down in the heating of defrost process; interior heat converter air-out temperature fluctuation is small, improves the thermal comfort experience of passenger on vehicle, achieves energy-saving and emission reduction purposes.
Description
Technical field
The invention belongs to automobile air conditioning technology fields, and in particular to a kind of electric automobile air-conditioning system and its Defrost method,
Operation method, control system.
Background technique
New-energy electric vehicle solves the problems, such as the environmental issue of fuel-engined vehicle and fossil fuel dependence, but due to new energy
Source automobile can use without engine exhaust heat in winter, can expend a large amount of electric energy again using the air-conditioning system that electric heating assists
Heating, shortens course continuation mileage；In the prior art, in order to improve winter heating's efficiency of New-energy electric vehicle, usually
It can be used heat pump type air conditioner system, but heat pump system is in winter under the outdoor environment of low temperature and high relative humidity when heating operation, the outer heat of vehicle
Exchanger is easy to appear frost, so that mounted air conditioner system heating capacity is constantly decayed, defrost is imitated for the continuous thickening of frost layer
Rate is low, and in vehicle-mounted heat pump system Defrost operation, and heating mode can be switched to refrigeration mode, and car stops heating, greatly
Occupant comfort is affected greatly.
Further, the power battery of existing New-energy electric vehicle during discharge, due to chemically react so that interior
Portion generates a large amount of heat, and when radiating efficiency is lower than heat production efficiency, battery temperature is increased rapidly, and power battery is at 20~40 DEG C
Ability efficient operation in temperature range, it is therefore desirable to which heat management is carried out to power battery.
Based on technical problem present in above-mentioned electric automobile air conditioner, there has been no relevant solutions；Therefore compel to be essential
Seek effective scheme to solve the above problems.
Summary of the invention
The purpose of the present invention is shortcoming present in view of the above technology, propose a kind of electric automobile air-conditioning system and
Its Defrost method, control method, control system, it is intended to solve the problems, such as that existing New-energy electric vehicle air-conditioning defrost efficiency is low.
The present invention provides a kind of electric automobile air-conditioning system, is equipped with refrigerant circuit, which has heating
As the vehicle outer heat-exchanger of evaporator and throttling dress when operation as the interior heat exchanger of condenser, heating operation
It sets, compressor, refrigerant circuit connects an accumulation of heat branch, which connects heat exchanger and throttling set in the car
Between, the other end is connected between throttling set and vehicle outer heat-exchanger；Accumulation of heat branch road is in series with storage heater and flow is adjusted
Valve, electric car are mounted with power battery, and storage heater and the power battery have heat exchanging relation, when refrigerant circuit is transported in heating
When the non-defrost state of row, storage heater absorbs power battery waste heat by control and carries out accumulation of heat；When refrigerant circuit is in heating operation
When white state, storage heater, which is controlled to refrigerant circuit, releases heat, rises the refrigerant temperature into vehicle outer heat-exchanger
It is high.
Further, storage heater makes the upborne mode of refrigerant temperature into vehicle outer heat-exchanger be: from the vehicle
Refrigerant after condensing heat release in inside heat exchanger enters the accumulation of heat branch by control part of refrigerant and absorbs the accumulation of heat
Device accumulation of heat, a part enter the throttling set reducing pressure by regulating flow, and two parts refrigerant mixes before entering vehicle outer heat-exchanger, makes
Refrigerant temperature into vehicle outer heat-exchanger is raised.
Further, in the refrigerant circuit in the non-defrost state of heating operation, the storage heater is absorbed by control
The mode that power battery waste heat carries out accumulation of heat is: if the temperature of the storage heater is handed over lower than temperature of powered cell but higher than interior heat
When parallel operation outlet refrigerant temperature, the flow control valve is closed, storage heater is controlled only absorption power battery waste heat and stored
Heat；If the temperature of the storage heater is lower than temperature of powered cell and interior heat exchanger outlet refrigerant temperature simultaneously, flow
Regulating valve opens an aperture by control, and storage heater absorbs power battery waste heat and interior heat exchanger outlet waste heat carries out accumulation of heat
Journey.
Further, storage heater, which is controlled to the exothermic heat exchange mode of refrigerant circuit, is: the power battery with
The evaporation ends of heat pipe are arranged in by heat pipe heat exchanging, the power battery in the storage heater, and the condensation of heat pipe is arranged in storage heater
End.
Further, heat pipe inner sealing has fluid, when the heat pipe evaporation ends fluid absorbs what the power battery distributed
Heat makes the condensation end of heat pipe reject heat to the storage heater by siphonage.
Further, storage heater is phase change heat accumulator.
Further, electric automobile air-conditioning system is heat pump air conditioning system, and refrigerant circuit is additionally provided with fluid reversing device.
Further, gas-liquid separator and/or the throttling set are equipped between compressor and the fluid reversing device
Drier is provided between interior heat exchanger.
Further, fluid reversing device is four-way reversing valve and/or the throttling set is electric expansion valve.
Correspondingly, the present invention also provides a kind of Defrost methods according to electric automobile air-conditioning system described above, including
Following steps:
S1: when the electric automobile air-conditioning system is unsatisfactory for defrosting condition: if the temperature of storage heater is lower than power battery temperature
When spending but being higher than interior heat exchanger outlet refrigerant temperature, flow control valve is closed, storage heater, which is controlled, only absorbs power electric
Pond waste heat carries out accumulation of heat；If the temperature of storage heater is lower than temperature of powered cell and interior heat exchanger outlet refrigerant temperature simultaneously
When, flow control valve opens a lesser aperture by control, and storage heater absorbs power battery waste heat and interior heat exchanger outlet
Waste heat carries out heat-accumulating process；
S2: when electric automobile air-conditioning system meets defrosting condition: coming out high temperature and pressure liquid refrigerant, quilt from compressor
It controls and is divided into two-way after condensing heat release in heat exchanger into the car, part of refrigerant enters storage heater, absorbs storage heater and deposits
The heat of storage is mixed with another part refrigerant after throttling set throttles, so that flowing to the refrigeration of vehicle outer heat-exchanger
Agent evaporating temperature is enhanced, and reaches defrosting purpose.
Correspondingly, the present invention also provides a kind of operation method according to electric automobile air-conditioning system described above, air-conditionings
System is set there are four mode:
Mode one: when the independent heating operation of air-conditioning system, high temperature and pressure liquid refrigerant is come out from compressor, by fluid
Reversing arrangement condenses heat release in heat exchanger into the car, achievees the purpose that heat in-vehicle air, at this time the liquid of high temperature and pressure
Refrigerant successively after drier, throttling set reducing pressure by regulating flow, into vehicle outer heat-exchanger, again passes by fluid reversing device
Into gas-liquid separator, so that sucking compressor completes a heating circulation；
Mode two: air-conditioning system and the coupling operation of phase-transition heat-storage system, when temperature sensor detects the temperature of storage heater
Lower than temperature of powered cell, but when being higher than interior heat exchanger outlet refrigerant temperature, control system is closed flow and is adjusted at this time
Valve, storage heater only absorb power battery waste heat and carry out accumulation of heat, pass through heat pipe heat exchanging, the stream in heat pipe between power battery and storage heater
Body absorbs the heat that power battery distributes in evaporator section, enters storage heater by siphonage and condenses heat release；
Mode three: air-conditioning system and hold over system coupling operation, when temperature sensor detects the temperature of storage heater simultaneously
When lower than temperature of powered cell and interior heat exchanger outlet refrigerant temperature, control system opens flow control valve at this time, but
Control is in a lesser aperture, and storage heater absorbs battery waste heat and interior heat exchanger outlet waste heat carries out heat-accumulating process；
Mode four: storage heater completes heat accumulation, if temperature sensor detects that the temperature of vehicle outer heat-exchanger is too low and occurs
When frosting situation, air-conditioning system enters defrost pattern, comes out high temperature and pressure liquid refrigerant from compressor, fills by fluid reversing
It sets and is divided into two-way after condensing heat release in heat exchanger into the car, part of refrigerant enters storage heater, absorbs storage heater storage
Heat, mixed with another part refrigerant after throttling set throttles, so that flowing to the refrigerant of vehicle outer heat-exchanger
Evaporating temperature is enhanced, and reaches defrosting purpose.
Further, it comprises the following control processes:
S1: detection air conditioning for automobiles operating condition；
S2: when environment temperature is in the first preset temperature range, air-conditioning system heating operation is controlled；
S3: judge whether the air-conditioning system under heating operation meets default defrost condition；
S41: when judgement meets default defrost condition, control air-conditioning system enters defrost state, operational mode four；
S42: when judgement is unsatisfactory for default defrost condition, phase change heat accumulator temperature is detected: if the temperature of the storage heater
When lower than battery temperature but being higher than interior heat exchanger outlet refrigerant temperature, air-conditioning system operational mode two is controlled；If described
When the temperature of storage heater is lower than battery temperature and interior heat exchanger outlet refrigerant temperature simultaneously, control air-conditioning system runs mould
Formula three.
Further, when environment temperature is in the second preset temperature range, air-conditioning system refrigerating operaton is controlled.
Correspondingly, the present invention also provides a kind of control systems for realizing method described above, including controller and detection mould
Block, detection module are electrically connected with the controller；Detection module is for detecting storage heater temperature, temperature of powered cell, interior heat exchange
Device outlet refrigerant temperature and vehicle outer heat-exchanger temperature；Detection storage heater temperature that controller is detected according to detection module,
Temperature of powered cell, interior heat exchanger outlet refrigerant temperature and vehicle outer heat-exchanger temperature control air-conditioning system press right
It is required that any one of 11-13 the method is run.
Using the above scheme, car condensator outlet refrigerant when being run by recycling power battery waste heat and winter heating
Waste heat, had not only improved the working efficiency of power battery, but also solved the problems, such as electric automobile air-conditioning system winter defrost low efficiency, and
Not stopping heating in defrost process, interior heat converter air-out temperature fluctuation is small, the thermal comfort experience of passenger on vehicle is improved,
It achieves energy-saving and emission reduction purposes.
Detailed description of the invention
The present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments.
Fig. 1 is a kind of electric automobile air-conditioning system embodiment schematic diagram of the present invention；
Fig. 2 is 1 heat pipe siphonage heating power schematic diagram of the embodiment of the present invention；
Fig. 3 is a kind of one operation schematic diagram of electric automobile air-conditioning system embodiment mode of the present invention；
Fig. 4 is a kind of two operation schematic diagram of electric automobile air-conditioning system embodiment mode of the present invention；
Fig. 5 is a kind of three operation schematic diagram of electric automobile air-conditioning system embodiment mode of the present invention；
Fig. 6 is a kind of four operation schematic diagram of electric automobile air-conditioning system embodiment mode of the present invention；
Fig. 7 is a kind of Defrost method course diagram of electric automobile air-conditioning system embodiment of the present invention.
In figure: 1, interior heat exchanger；2, four-way reversing valve；3, gas-liquid separator；4, compressor；5, power battery pack；
6, phase change heat accumulator；7, flow control valve；8, electric expansion valve；9, vehicle outer heat-exchanger；10, the first blower；11, the second wind
Machine；12, drier.
Specific embodiment
It should be noted that in the absence of conflict, the features in the embodiments and the embodiments of the present application can phase
Mutually combination.The present invention will be described in detail below with reference to the accompanying drawings and embodiments.
In the description of the present invention, it is to be understood that, term " center ", " longitudinal direction ", " transverse direction ", " length ", " width ",
" thickness ", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom" "inner", "outside", " up time
The orientation or positional relationship of the instructions such as needle ", " counterclockwise ", " axial direction ", " radial direction ", " circumferential direction " be orientation based on the figure or
Positional relationship is merely for convenience of description of the present invention and simplification of the description, rather than the device or element of indication or suggestion meaning must
There must be specific orientation, be constructed and operated in a specific orientation, therefore be not considered as limiting the invention.
In addition, term " first ", " second " are used for descriptive purposes only and cannot be understood as indicating or suggesting relative importance
Or implicitly indicate the quantity of indicated technical characteristic.Define " first " as a result, the feature of " second " can be expressed or
Implicitly include at least one this feature.In the description of the present invention, the meaning of " plurality " is at least two, such as two, three
It is a etc., unless otherwise specifically defined.
In the present invention unless specifically defined or limited otherwise, term " installation ", " connected ", " connection ", " fixation " etc.
Term shall be understood in a broad sense, for example, it may be being fixedly connected, may be a detachable connection, or integral；It can be mechanical connect
It connects, is also possible to be electrically connected or can communicate each other；It can be directly connected, can also indirectly connected through an intermediary, it can be with
It is the interaction relationship of the connection or two elements inside two elements, unless otherwise restricted clearly.For this field
For those of ordinary skill, the specific meanings of the above terms in the present invention can be understood according to specific conditions.
Embodiment 1
The present embodiment provides a kind of electric automobile air-conditioning systems.
As shown in Figures 1 to 7, electric automobile air-conditioning system embodiment provided by the invention, is formed with refrigerant circuit,
It is used as and steams when the refrigerant circuit heating when having refrigeration as condenser as the vehicle outer heat-exchanger 9 of evaporator, refrigeration
As the interior heat exchanger 1 of condenser, fluid reversing device 2, throttling set 8 and compressor 4, refrigerant when sending out device heating
Circuit connects an accumulation of heat branch, and in the car between heat exchanger 1 and throttling set, the other end is connected for accumulation of heat branch one end connection
Between throttling set and vehicle outer heat-exchanger 9, and accumulation of heat branch road is in series with storage heater 6 and flow control valve 7；Electric car
It is mounted with power battery 5, the power battery 5 of storage heater and electric car has heat exchanging relation:
When the refrigerant circuit is in the non-defrost state of heating operation, storage heater by control absorb power battery waste heat into
Row accumulation of heat；When refrigerant circuit is in heating operation defrost state, the storage heater, which is controlled to refrigerant circuit, releases heat,
It is raised the refrigerant temperature into vehicle outer heat-exchanger.
Specific optimal enforcement scheme is:
When electric automobile air-conditioning system is unsatisfactory for defrosting condition: if the temperature of storage heater is lower than temperature of powered cell but is higher than
When interior heat exchanger outlet refrigerant temperature, close flow control valve, storage heater controlled only absorb power battery waste heat into
Row accumulation of heat；If the temperature of storage heater is lower than temperature of powered cell and interior heat exchanger outlet refrigerant temperature simultaneously, flow
Regulating valve opens a lesser aperture by control, and storage heater absorbs power battery waste heat and interior heat exchanger outlet waste heat carries out
Heat-accumulating process.
When electric automobile air-conditioning system meets defrosting condition: coming out high temperature and pressure liquid refrigerant from compressor, be controlled
It makes and is divided into two-way after condensing heat release in heat exchanger into the car, part of refrigerant enters storage heater, absorbs storage heater storage
Heat, mixed with another part refrigerant after throttling set throttles, so that flowing to the refrigerant of vehicle outer heat-exchanger
Evaporating temperature is enhanced, and reaches defrosting purpose.
It can be seen that storage heater absorbs heat in non-defrosting state, in defrosting state heat release, battery is effectively utilized in the present invention
Waste heat solves the problems, such as existing New-energy electric vehicle temperature, and interior side stops heating problem during effectively preventing defrost；
It can effectively solve the problem that existing automobile power cell radiating efficiency is low simultaneously, service life problem influenced, by temperature of powered cell control
System improves the working efficiency of power battery pack in optimum temperature section.
As a preferred embodiment of the invention, power battery 5 and 6 heat exchange mode of storage heater are currently preferred using hot
Pipe heat exchange, this kind of heat exchange mode, which does not need additional heat exchanger is arranged, cools down battery, has that structure is simple, heat exchange efficiency
The advantages that high, at low cost.Specifically as shown in Fig. 2, the evaporation ends of heat pipe are arranged in power battery 5, phase change heat accumulator 6 is arranged in heat
The condensation end of pipe, heat pipe evaporator section absorb the heat that power battery distributes, and heat pipe condenser section rejects heat to storage heater；Into one
Step ground, heat pipe inner sealing have fluid, when the heat that heat pipe evaporation ends fluid absorption power battery 5 distributes, are made by siphonage
Condensation end of heat pipe rejects heat to phase change heat accumulator 6；Further, fluid absorbs the heat that power battery distributes in evaporator section
Amount enters phase change heat accumulator by siphonage and condenses heat release.
The present invention couples hold over system and heat pump air conditioning system, right using battery and condenser refrigerant outlet waste heat
The heat-storing material of storage heater is heated, and is used to remove the frost layer on vehicle outer heat-exchanger finned tube in defrost process, is reached
The effect persistently heated while defrost.Preferably, storage heater of the present invention is phase change heat accumulator 6.
In conjunction with above scheme, as shown in Figures 1 to 7, the embodiment of the present invention is preferred, and electric automobile air-conditioning system is heat pump
Air-conditioning system, refrigerant circuit are additionally provided with fluid reversing device, which is four-way reversing valve.
Other are also preferable, and throttling set is selected as electric expansion valve 8, and fluid reversing device is four-way reversing valve 2；Pressure
Gas-liquid separator 3 is equipped between contracting machine 4 and fluid reversing device；Drying is provided between throttling set and interior heat exchanger 1
Device 12.
For the winter heating's efficiency for improving New-energy electric vehicle, heat pump air conditioning system is equipped at heat exchanger 1 in the car
First blower 10 is equipped with the second blower 11. by being equipped with blower at heat exchanger in the car, can be improved scattered at heat exchanger 9
The thermal efficiency, in the heat pump air conditioning system compressor 4, the first blower 10 and the second blower 11 be electrically connected with power battery 5 with
Electric energy is obtained from power battery.
Embodiment 2:
Based on the same inventive concept, in conjunction with above scheme, as shown in Figures 1 to 7, the present invention also provides a kind of according to above-mentioned
The Defrost method of the electric automobile air-conditioning system.
Electric automobile air-conditioning system Defrost method provided by the invention is based on air-conditioning system described in embodiment 1, removes
White method are as follows:
S1: when electric automobile air-conditioning system is unsatisfactory for defrosting condition: if the temperature of phase change heat accumulator 6 is lower than power battery 5
Temperature but when being higher than interior 1 outlet refrigerant temperature of heat exchanger, closes flow control valve 7, phase change heat accumulator 6, which is controlled, only to be inhaled
The waste heat for receiving power battery 5 carries out accumulation of heat；If the temperature of phase change heat accumulator 6 is lower than power battery 5 simultaneously sends out temperature and car heat
When 2 outlet refrigerant temperature of exchanger, flow control valve 7 opens an aperture by control, and phase change heat accumulator 6 absorbs power battery 5
Waste heat and interior heat exchanger 1 export waste heat and carry out heat-accumulating process；
S2: when electric automobile air-conditioning system meets defrosting condition: high temperature and pressure liquid refrigerant is come out from compressor 4,
It is controlled and is divided into two-way after condensing heat release in heat exchanger 1 into the car, part of refrigerant enters phase change heat accumulator 6, absorbs
The heat that phase change heat accumulator 6 stores is mixed with another part refrigerant after the throttling of electric expansion valve 8, so that flowing to vehicle
The refrigerant evaporating temperature of outer heat-exchanger 9 is enhanced, and reaches defrosting purpose.
Particular technique realizes that implementation means described in embodiment 1 can be used in details.
Embodiment 3:
Based on the same inventive concept, in conjunction with above scheme, as shown in Figures 1 to 7, the present invention also provides a kind of according to above-mentioned
Air-conditioning system and electric automobile air-conditioning system operation method with above-mentioned Defrost method, air-conditioning system set that there are four modes:
Mode one: independent heating operation mode:
When the independent heating operation of air-conditioning system, high temperature and pressure liquid refrigerant is come out from compressor 4, by four-way reversing valve
2, heat release is condensed in heat exchanger 1 into the car, achievees the purpose that heat in-vehicle air, at this time the liquid refrigerant of high temperature and pressure
Successively after drier 12,8 reducing pressure by regulating flow of electric expansion valve, into vehicle outer heat-exchanger 9, four-way reversing valve 2 is again passed by
Into gas-liquid separator 3, so that sucking compressor 4 completes a heating circulation；
Mode two: air-conditioning system and the coupling of phase-transition heat-storage system run the accumulation of heat that storage heater 6 only absorbs 5 waste heat of power battery
Mode:
Air-conditioning system and the coupling operation of phase-transition heat-storage system, when temperature sensor detects the temperature of storage heater lower than power
5 temperature of battery, but when being higher than interior 1 outlet refrigerant temperature of heat exchanger, control system closes flow control valve 7 at this time, stores
Hot device 6 only absorbs 5 waste heat of power battery and carries out accumulation of heat, passes through heat pipe heat exchanging, the stream in heat pipe between power battery 5 and storage heater 6
Body absorbs the heat that power battery 5 distributes in evaporator section, enters storage heater by siphonage and condenses heat release, does not need setting volume
Outer heat exchanger；
Mode three: the waste heat and car of air-conditioning system and the phase-transition heat-storage system coupling operation absorption power battery 5 of storage heater 6
Heat exchanger 1 exports the mode that waste heat carries out accumulation of heat:
Air-conditioning system and hold over system coupling operation, when temperature sensor detects the temperature of storage heater 6 while being lower than dynamic
When 5 temperature of power battery and interior 1 outlet refrigerant temperature of heat exchanger, control system opens flow control valve 7 at this time, but controls
In a lesser aperture, storage heater 6 absorbs the waste heat of power battery 5 and interior heat exchanger 1 exports waste heat and carries out accumulation of heat
Journey；
Mode four: storage heater 6 completes the air-conditioning system defrost pattern after heat accumulation: storage heater 6 completes heat accumulation, if temperature sensing
Device detects that the temperature of vehicle outer heat-exchanger 9 is too low and when there is frosting situation, and air-conditioning system enters defrost pattern, from compressor
4 come out high temperature and pressure liquid refrigerant, are divided into two-way after condensing heat release in four-way reversing valve 2 into the car heat exchanger 1,
Part of refrigerant enters storage heater 6, absorbs the heat that storage heater 6 stores, with another portion after the throttling of electric expansion valve 8
Divide refrigerant mixing, so that the refrigerant evaporating temperature for flowing to vehicle outer heat-exchanger 9 is enhanced, reaches defrosting purpose.
The present embodiment accumulation of heat preferably uses phase change heat accumulator.Other are the same as embodiment 1.
Embodiment 4:
Based on the same inventive concept, in conjunction with above scheme, as a preferred embodiment of the invention, such as Fig. 1 to Fig. 7 institute
Show, it is excellent the present invention also provides a kind of control method of electric automobile air-conditioning system based on above-mentioned air-conditioning system and operation method
Choosing comprises the following control processes:
S1: detection air conditioning for automobiles operating condition；
S2: as environment temperature TOuter ringIn the first preset temperature range, air-conditioning system heating operation is controlled；
S3: judge whether the air-conditioning system under heating operation meets default defrost condition；
S41: when judgement meets default defrost condition, control air-conditioning system enters defrost state, operational mode four；
S42: when judgement is unsatisfactory for default defrost condition, phase change heat accumulator temperature is detected: if the temperature of the storage heater
When lower than battery temperature but being higher than interior heat exchanger outlet refrigerant temperature, air-conditioning system operational mode two is controlled；If described
When the temperature of storage heater is lower than battery temperature and interior heat exchanger outlet refrigerant temperature simultaneously, control air-conditioning system runs mould
Formula three.
When present invention preferably employs heat pump type air corditioning system, above-mentioned control method further includes refrigerating operaton control.As
A preferred embodiment of the invention works as TOuter ringIn the second preset temperature range, air-conditioning system refrigerating operaton is controlled.It is specific preferred
, as -15 DEG C of < TOuter ringAt 7 DEG C of <, air-conditioning carries out heating operation；As 19 DEG C of < TOuter ringAt 50 DEG C of <, air-conditioning carries out refrigerating operaton.
Embodiment 5:
Correspondingly, in conjunction with above scheme, as shown in Figures 1 to 7, method described above is realized the present invention also provides a kind of
Control system, including controller and detection module, detection module are electrically connected with the controller；Detection module is for detecting storage heater temperature
Degree, temperature of powered cell, interior heat exchanger outlet refrigerant temperature and vehicle outer heat-exchanger temperature；Controller is according to detection
Detection storage heater temperature, temperature of powered cell, interior heat exchanger outlet refrigerant temperature and the outer heat of vehicle of module detection are handed over
Parallel operation temperature controls air-conditioning system by the operation of operation method described in embodiment 1-4 any embodiment.
Using the above scheme, car condensator outlet refrigerant when being run by recycling power battery waste heat and winter heating
Waste heat, had not only improved the working efficiency of power battery, but also solved the problems, such as electric automobile air-conditioning system winter defrost low efficiency, and
It is not shut down in the heating of defrost process, interior heat converter air-out temperature fluctuation is small, the thermal comfort experience of passenger on vehicle is improved,
It achieves energy-saving and emission reduction purposes.
The above, only presently preferred embodiments of the present invention not do limitation in any form to the present invention.It is any ripe
Those skilled in the art is known, without departing from the scope of the technical proposal of the invention, all using technology contents described above
Many possible changes and modifications or equivalent example modified to equivalent change are made to technical solution of the present invention.Therefore, all
It is the content without departing from technical solution of the present invention, any change modification made to the above embodiment of technology according to the present invention,
Equivalent variations and modification belong to the protection scope of the technical program.
Claims (14)
1. electric automobile air-conditioning system is equipped with refrigerant circuit, as condenser when which has heating operation
Interior heat exchanger, heating operation when vehicle outer heat-exchanger and throttling set, compressor as evaporator, feature exists
In:
The refrigerant circuit connects an accumulation of heat branch, accumulation of heat branch one end connection in the car heat exchanger and throttling set it
Between, the other end is connected between throttling set and vehicle outer heat-exchanger；The accumulation of heat branch road is in series with storage heater and flow tune
Save valve；
Electric car is mounted with power battery, and the storage heater and the power battery have heat exchanging relation；
When the refrigerant circuit is in the non-defrost state of heating operation, the storage heater by control absorb power battery waste heat into
Row accumulation of heat；
When the refrigerant circuit is in heating operation defrost state, the storage heater, which is controlled to refrigerant circuit, releases heat
Amount is raised the refrigerant temperature into vehicle outer heat-exchanger.
2. electric automobile air-conditioning system according to claim 1, which is characterized in that the storage heater makes to enter the outer heat friendship of vehicle
The upborne mode of the refrigerant temperature of parallel operation is: the refrigerant after condensing heat release in the interior heat exchanger is by control one
Some refrigerant enters the accumulation of heat branch and absorbs the storage heater accumulation of heat, and a part enters the throttling set reducing pressure by regulating flow,
Two parts refrigerant mixes before entering vehicle outer heat-exchanger, is raised the refrigerant temperature into vehicle outer heat-exchanger.
3. electric automobile air-conditioning system according to claim 2, which is characterized in that transported in the refrigerant circuit in heating
When the non-defrost state of row, the storage heater is by the mode that control absorbs the progress accumulation of heat of power battery waste heat: if the storage heater
Temperature lower than temperature of powered cell but when being higher than interior heat exchanger outlet refrigerant temperature, close the flow control valve,
Storage heater, which is controlled, only absorbs the progress accumulation of heat of power battery waste heat；If the temperature of the storage heater is lower than temperature of powered cell simultaneously
When with interior heat exchanger outlet refrigerant temperature, flow control valve opens an aperture by control, and storage heater absorbs power battery
Waste heat and interior heat exchanger outlet waste heat carry out heat-accumulating process.
4. electric automobile air-conditioning system according to claim 3, which is characterized in that the storage heater is controlled to refrigerant
The exothermic heat exchange mode in circuit is: by heat pipe heat exchanging, the power battery is set for the power battery and the storage heater
The evaporation ends in heat pipe are set, the condensation end of heat pipe is arranged in storage heater.
5. electric automobile air-conditioning system according to claim 4, which is characterized in that the heat pipe inner sealing has fluid, when
The heat pipe evaporation ends fluid absorbs the heat that the power battery distributes, and makes the condensation end of heat pipe will be hot by siphonage
Amount is released to the storage heater.
6. electric automobile air-conditioning system according to claim 1-5, which is characterized in that the storage heater is phase transformation
Storage heater.
7. electric automobile air-conditioning system according to claim 6, which is characterized in that the electric automobile air-conditioning system is heat
Pump air conditioner system, the refrigerant circuit are additionally provided with fluid reversing device.
8. electric automobile air-conditioning system according to claim 7, which is characterized in that the compressor and the fluid reversing
It is equipped between device between gas-liquid separator and/or the throttling set and interior heat exchanger and is provided with drier.
9. electric automobile air-conditioning system according to claim 8, which is characterized in that the fluid reversing device changes for four-way
It is electric expansion valve to valve and/or the throttling set.
10. a kind of Defrost method of -9 described in any item electric automobile air-conditioning systems according to claim 1, it is characterised in that:
S1: when the electric automobile air-conditioning system is unsatisfactory for defrosting condition: if the temperature of the storage heater is lower than power battery temperature
When spending but being higher than interior heat exchanger outlet refrigerant temperature, the flow control valve is closed, storage heater is controlled only to absorb and be moved
Power battery waste heat carries out accumulation of heat；If the temperature of the storage heater is lower than temperature of powered cell and interior heat exchanger outlet system simultaneously
When refrigerant temperature, flow control valve opens an aperture by control, and storage heater absorbs power battery waste heat and interior heat exchanger goes out
Mouth waste heat carries out heat-accumulating process；
S2: when the electric automobile air-conditioning system meets defrosting condition: coming out high temperature and pressure liquid refrigerant, quilt from compressor
It controls and is divided into two-way after condensing heat release in heat exchanger into the car, part of refrigerant enters storage heater, absorbs storage heater and deposits
The heat of storage is mixed with another part refrigerant after throttling set throttles, so that flowing to the refrigeration of vehicle outer heat-exchanger
Agent evaporating temperature is enhanced, and reaches defrosting purpose.
11. a kind of operation method of -9 described in any item electric automobile air-conditioning systems according to claim 1, it is characterised in that:
If there are four operational modes:
Mode one: when the independent heating operation of air-conditioning system, high temperature and pressure liquid refrigerant is come out from compressor, by fluid reversing
Device condenses heat release in heat exchanger into the car, achievees the purpose that heat in-vehicle air, at this time the liquid refrigeration of high temperature and pressure
Agent is after throttling set reducing pressure by regulating flow, into vehicle outer heat-exchanger, enters back into compressor later and completes a heating circulation；
Mode two: air-conditioning system and the coupling operation of phase-transition heat-storage system, when the temperature of storage heater is lower than temperature of powered cell, but height
When interior heat exchanger outlet refrigerant temperature, control system closes flow control valve at this time, and storage heater only absorbs power electric
Pond waste heat carries out accumulation of heat, passes through heat pipe heat exchanging between power battery and storage heater, and the fluid in heat pipe absorbs power electric in evaporator section
The heat that pond distributes enters storage heater condensation segment heat release by siphonage；
Mode three: air-conditioning system and hold over system coupling operation, when the temperature of storage heater is lower than temperature of powered cell and vehicle simultaneously
When inside heat exchanger outlet refrigerant temperature, control system opens flow control valve at this time, but controls in a lesser aperture,
Storage heater absorbs battery waste heat and interior heat exchanger outlet waste heat carries out heat-accumulating process；
Mode four: storage heater completes heat accumulation, if temperature sensor detects that the temperature of vehicle outer heat-exchanger is too low and frosting occurs
When situation, air-conditioning system enters defrost pattern, comes out high temperature and pressure liquid refrigerant from compressor, by fluid reversing device into
It is divided into two-way after entering to condense heat release in interior heat exchanger, part of refrigerant enters storage heater, absorbs the heat of storage heater storage
Amount, mixes with another part refrigerant after throttling set throttles, so that flowing to the refrigerant evaporation of vehicle outer heat-exchanger
Temperature is enhanced, and reaches defrosting purpose.
12. electric automobile air-conditioning system operation method according to claim 11, which is characterized in that controlled including following
Journey:
S1: detection air conditioning for automobiles operating condition；
S2: when environment temperature is in the first preset temperature range, air-conditioning system heating operation is controlled；
S3: judge whether the air-conditioning system under heating operation meets default defrost condition；
S41: when judgement meets default defrost condition, control air-conditioning system enters defrost state, operational mode four；
S42: when judgement is unsatisfactory for default defrost condition, phase change heat accumulator temperature is detected: if the temperature of the storage heater is lower than
Battery temperature but when being higher than interior heat exchanger outlet refrigerant temperature, control air-conditioning system runs the mode two；If described
When the temperature of storage heater is lower than battery temperature and interior heat exchanger outlet refrigerant temperature simultaneously, control air-conditioning system runs institute
State mode three.
13. electric automobile air-conditioning system operation method according to claim 12, which is characterized in that when environment temperature is
When two preset temperature ranges, air-conditioning system refrigerating operaton is controlled.
14. a kind of control system for realizing any one of claim 11-13 the method, it is characterised in that: including controller and
Detection module, the detection module are electrically connected with the controller；The detection module is for detecting storage heater temperature, power electric
Pond temperature, interior heat exchanger outlet refrigerant temperature and vehicle outer heat-exchanger temperature；The controller is according to the detection
Detection storage heater temperature, temperature of powered cell, interior heat exchanger outlet refrigerant temperature and the outer heat of vehicle of module detection are handed over
Parallel operation temperature controls air-conditioning system by any one of claim 11-13 the method operation.
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| CN114523819A (en) * | 2022-03-30 | 2022-05-24 | 广东美的白色家电技术创新中心有限公司 | Thermal management system, control method and device, computer program product and vehicle |
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| CN114523819A (en) * | 2022-03-30 | 2022-05-24 | 广东美的白色家电技术创新中心有限公司 | Thermal management system, control method and device, computer program product and vehicle |
| CN114523819B (en) * | 2022-03-30 | 2024-01-19 | 广东美的白色家电技术创新中心有限公司 | Thermal management system, control method and device, computer program product and vehicle |
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| CN110126584B (en) | 2023-07-18 |
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