CN108973587A - A kind of automobile heat pump air-conditioning system and control method - Google Patents

A kind of automobile heat pump air-conditioning system and control method Download PDF

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Publication number
CN108973587A
CN108973587A CN201810697434.XA CN201810697434A CN108973587A CN 108973587 A CN108973587 A CN 108973587A CN 201810697434 A CN201810697434 A CN 201810697434A CN 108973587 A CN108973587 A CN 108973587A
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CN
China
Prior art keywords
heat
heat exchanger
compressor
throttling
automobile
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
CN201810697434.XA
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Chinese (zh)
Inventor
吴会丽
李俊峰
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Gree Electric Appliances Inc of Zhuhai
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Gree Electric Appliances Inc of Zhuhai
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Application filed by Gree Electric Appliances Inc of Zhuhai filed Critical Gree Electric Appliances Inc of Zhuhai
Priority to CN201810697434.XA priority Critical patent/CN108973587A/en
Publication of CN108973587A publication Critical patent/CN108973587A/en
Pending legal-status Critical Current

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Classifications

    • BPERFORMING OPERATIONS; TRANSPORTING
    • B60VEHICLES IN GENERAL
    • B60HARRANGEMENTS OF HEATING, COOLING, VENTILATING OR OTHER AIR-TREATING DEVICES SPECIALLY ADAPTED FOR PASSENGER OR GOODS SPACES OF VEHICLES
    • B60H1/00Heating, cooling or ventilating [HVAC] devices
    • B60H1/00271HVAC devices specially adapted for particular vehicle parts or components and being connected to the vehicle HVAC unit
    • B60H1/00278HVAC devices specially adapted for particular vehicle parts or components and being connected to the vehicle HVAC unit for the battery
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B60VEHICLES IN GENERAL
    • B60HARRANGEMENTS OF HEATING, COOLING, VENTILATING OR OTHER AIR-TREATING DEVICES SPECIALLY ADAPTED FOR PASSENGER OR GOODS SPACES OF VEHICLES
    • B60H1/00Heating, cooling or ventilating [HVAC] devices
    • B60H1/00642Control systems or circuits; Control members or indication devices for heating, cooling or ventilating devices
    • B60H1/00814Control systems or circuits characterised by their output, for controlling particular components of the heating, cooling or ventilating installation
    • B60H1/00878Control systems or circuits characterised by their output, for controlling particular components of the heating, cooling or ventilating installation the components being temperature regulating devices
    • B60H1/00899Controlling the flow of liquid in a heat pump system
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B60VEHICLES IN GENERAL
    • B60HARRANGEMENTS OF HEATING, COOLING, VENTILATING OR OTHER AIR-TREATING DEVICES SPECIALLY ADAPTED FOR PASSENGER OR GOODS SPACES OF VEHICLES
    • B60H1/00Heating, cooling or ventilating [HVAC] devices
    • B60H1/00271HVAC devices specially adapted for particular vehicle parts or components and being connected to the vehicle HVAC unit
    • B60H2001/00307Component temperature regulation using a liquid flow
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B60VEHICLES IN GENERAL
    • B60HARRANGEMENTS OF HEATING, COOLING, VENTILATING OR OTHER AIR-TREATING DEVICES SPECIALLY ADAPTED FOR PASSENGER OR GOODS SPACES OF VEHICLES
    • B60H1/00Heating, cooling or ventilating [HVAC] devices
    • B60H1/00642Control systems or circuits; Control members or indication devices for heating, cooling or ventilating devices
    • B60H1/00814Control systems or circuits characterised by their output, for controlling particular components of the heating, cooling or ventilating installation
    • B60H1/00878Control systems or circuits characterised by their output, for controlling particular components of the heating, cooling or ventilating installation the components being temperature regulating devices
    • B60H2001/00928Control systems or circuits characterised by their output, for controlling particular components of the heating, cooling or ventilating installation the components being temperature regulating devices comprising a secondary circuit

Abstract

The present invention provides a kind of automobile heat pump air-conditioning system and control method, the system comprises compressor (1), vehicle external heat exchanger (3), interior heat exchanger (4) and first throttling devices (6), it further include parallel branch (15), and the position that the first end of the parallel branch (15) is connected to the position between the vehicle external heat exchanger (3) and the first throttling device (6), the second end of the parallel branch (15) is connected to the compressor (1) between the interior heat exchanger (4);Second throttling device (7) and phase-change accumulation energy module (8) are additionally provided on the parallel branch (15), the heat storage that the phase-change accumulation energy module (8) can generate the heat generating component in automobile simultaneously carries out heat exchange with the refrigerant in the parallel branch (15).The heat that can be generated through the invention using the heat generating component (especially battery pack) in automobile, low-grade heat source when as defrost improve interior comfort.

Description

A kind of automobile heat pump air-conditioning system and control method
Technical field
The invention belongs to air-conditioning technical fields, and in particular to a kind of automobile heat pump air-conditioning system and control method.
Background technique
In winter under worst cold case, the automobile frosting of vehicle external heat exchanger meeting in the process of moving, originally with frost thickness Increase, heat exchange area increases, and the thermal conduction resistance of frost layer increases unobvious at this time, will increase heat exchange amount instead with frost layer thickness Degree further increases, and thermal conduction resistance increases again and again, and almost straight line declines to guarantee automobile driving process in winter to heat exchange amount The reliability of middle air-conditioning system, need to design vehicle external heat exchanger corresponding Defrost method guarantee air-conditioning system operation can It leaning on, common Defrost method has artificial defrosting, the defrosting of water defrosting, electric defrosting, compressed air, but all not due to its limitation Defrosting suitable for automotive air-conditioning system.
Hot gas defrosting is divided into commutation defrosting and bypass hot gas defrosting, and conventional commutation defrosting needs to be switched to refrigeration mode, interior Low-temperature refrigerant can be flowed through in the heat exchanger of side, be affected to the temperature in cabin, caused temperature fluctuation, influence driver and passenger's Comfort.
When being switched to refrigeration mode defrosting there are air-conditioning system due to automobile heat pump air conditioner in the prior art, inside heat exchange A large amount of low-temperature refrigerants are flowed through in device, is affected to the temperature in cabin, causes temperature fluctuation, influence the comfortable of driver and passenger Property;When air-conditioning system is switched to refrigeration mode defrosting, there is condensed water on the heat exchanger of inside, vehicle can be caused after being switched to heating mode The rapid fogging of window, influences driving safety;Temperature change dramatically can generate the technologies such as impact, the performance for influencing battery to battery performance Problem, therefore researching and designing of the present invention goes out a kind of automobile heat pump air-conditioning system and control method.
Summary of the invention
Therefore, the technical problem to be solved in the present invention is that automobile heat pump air conditioner in the prior art is overcome to there is refrigeration mould Formula defrosting is affected to the temperature in cabin, causes temperature fluctuation, influences the defect of the comfort of driver and passenger, to provide A kind of automobile heat pump air-conditioning system and control method.
The present invention provides a kind of automobile heat pump air-conditioning system comprising compressor, vehicle external heat exchanger, interior heat exchanger and the One throttling set further includes parallel branch, and the first end of the parallel branch is connected to the vehicle external heat exchanger and described The second end of position, the parallel branch between one throttling set is connected between the compressor and the interior heat exchanger Position;
Second throttling device and phase-change accumulation energy module, the phase-change accumulation energy module energy are additionally provided in the parallel branch It reaches the heat storage for generating the heat generating component in automobile and carries out heat exchange with the refrigerant in the parallel branch.
Preferably,
Further include waste heat heat dissipation circulation loop, is provided with heat generating component heat exchanger, institute on the waste heat heat dissipation circulation loop Stating heat generating component heat exchanger can exchange heat to the heat generating component, and the waste heat radiates circulation loop through the phase transformation In energy-storage module, to exchange heat with the refrigerant in the parallel branch.
Preferably,
Coolant liquid in the waste heat heat dissipation circulation loop,
And liquid pump and/or liquid reserve tank are additionally provided on waste heat heat dissipation circulation loop.
Preferably,
The heat generating component is the battery pack in automobile, and the system also includes the temperature inspections for being able to detect battery pack temperature Element is surveyed, and the position adjacent with the battery pack is arranged in the phase-change accumulation energy module.
Preferably,
The first throttling device includes the first electric expansion valve and the first shut-off valve;And/or the second throttling device Including the second electric expansion valve and the second shut-off valve.
Preferably,
The compressor is air injection enthalpy-increasing compressor, is also connected between the vehicle external heat exchanger and the interior heat exchanger There is flash evaporation, the flash evaporation further includes in middle pressure output end and medium pressure output end and the air injection enthalpy-increasing compressor It is pressed into port connection, the flash evaporation further includes low-voltage output and the low-voltage output is connect with the interior heat exchanger.
Preferably,
Third electric expansion valve is additionally provided between the low-voltage output and the interior heat exchanger.
Preferably,
It further include electric heating component, the position of the interior heat exchanger is arranged in, with can be right in the electric heating component The air for flowing through the electric heating component carries out heat temperature raising.
Preferably,
The electric heating component is PTC electric heating component.
Preferably,
It is additionally provided with four-way valve in the outlet end of the compressor, four ends of the four-way valve are connected respectively to the vehicle External heat exchanger, the interior heat exchanger, the outlet end of the compressor and the input end of the compressor.
The present invention also provides a kind of control methods of automobile heat pump air-conditioning system, use preceding described in any item automobile heat Pump air conditioner system carries out refrigeration mode control, heating mode control, defrost pattern control and refrigerant refrigerating mode control to automobile System and pattern switching control.
Preferably,
When being additionally provided with four-way valve in the outlet end of the compressor, four ends of the four-way valve are connected respectively to described Vehicle external heat exchanger, the interior heat exchanger, the outlet end of the compressor and the compressor input end when:
When needing to run in cooling mode, the first throttling device unlatching is controlled, the second throttling device is closed Close, control the four-way valve outlet end of the compressor is connected to the vehicle external heat exchanger, the import of the compressor End is connected to the interior heat exchanger;
When needing to run in a heating mode, the first throttling device unlatching is controlled, the second throttling device is closed Close, control the four-way valve outlet end of the compressor is connected to the interior heat exchanger, the import of the compressor End is connected to the vehicle external heat exchanger;
When needing to operate under defrost pattern, the first throttling device closing is controlled, the second throttling device is opened Open, control the four-way valve outlet end of the compressor is connected to the vehicle external heat exchanger, the import of the compressor End is connected to the phase-change accumulation energy module.
Preferably,
When the heat generating component is battery pack, the system also includes the temperature detecting elements for being able to detect battery pack temperature When, and when the temperature for detecting battery pack is greater than preset value, then enter refrigerant refrigerating mode:
It controls the first throttling device and the second throttling device is opened, control the four-way valve and make the pressure The outlet end of contracting machine is connected to the vehicle external heat exchanger, the input end of the compressor and the interior heat exchanger and the phase transformation Energy-storage module is respectively communicated with, so that the parallel branch is arranged in parallel in the first throttling device and the interior heat exchanger string The both ends on union road.
A kind of automobile heat pump air-conditioning system provided by the invention and control method have the following beneficial effects:
1. the present invention is by setting parallel branch, and second throttling device and phase-change accumulation energy mould are arranged in parallel branch The heat that heat generating component generates can be stored, and it is exchanged heat with the refrigerant in parallel branch by block, can be effective The heat of the generation of the heat generating component (especially battery pack) in automobile is utilized in ground, is collected and is stored in phase-change accumulation energy module In, and low-grade heat source when as defrost, when defrost may be implemented, interior side heat exchanger is not passed through low temperature refrigerant, subtracts Temperature fluctuation in few cabin improves interior comfort;Simultaneously because without freezing to interior, it will not on indoor heat exchanger Condensed water is generated, caused vehicle window fogging after the conventional defrost that commutates just effectively is solved the problems, such as, promotes safety traffic coefficient;
2. the present invention can use conventional coolant system (waste heat heat dissipation circulation loop) drop by phase-change accumulation energy module The temperature of low battery pack, using conventional chilling liquid system cooling be unable to satisfy require when, can synchronize and utilize refrigerant flow path Cool down to battery pack, the reliability of battery pack is promoted, to battery performance when energy-storage module can also buffer temperature change dramatically Impact, extend battery life;Cooling passage and coolant channel are existed simultaneously in phase-change accumulation energy module, summer battery pack needs The cooling cycle of both of which can be provided when cooling down, meet battery pack difference cooling demand.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of automobile heat pump air-conditioning system of the invention;
Fig. 2 is the structural schematic diagram of automobile heat pump air-conditioning system of the invention under the first refrigeration cycle mode;
Fig. 3 is that (phase-change accumulation energy module carries out automobile heat pump air-conditioning system of the invention under second of refrigeration cycle mode Heat exchange) structural schematic diagram;
Fig. 4 is the structural schematic diagram of automobile heat pump air-conditioning system of the invention in the case where heating circulation pattern;
Fig. 5 is the structural schematic diagram of automobile heat pump air-conditioning system of the invention under defrost circulation pattern;
Fig. 6 is the structural schematic diagram of the first alternate embodiments of automobile heat pump air-conditioning system of the invention;
Fig. 7 is the structural schematic diagram of the second alternate embodiments of automobile heat pump air-conditioning system of the invention;
Fig. 8 is the structural schematic diagram of the third alternate embodiments of automobile heat pump air-conditioning system of the invention.
Appended drawing reference indicates in figure are as follows:
1, compressor;2, four-way valve;3, vehicle external heat exchanger;4, interior heat exchanger;5, fluid reservoir;6, first throttling device; 7, second throttling device;8, phase-change accumulation energy module;9, liquid pump;10, heat generating component heat exchanger;11, liquid reserve tank;12, third electricity Sub- expansion valve;13, flash evaporation;14, electric heating component;15, parallel branch;16, waste heat heat dissipation circulation loop.
Specific embodiment
As shown in figures 1-8, the present invention provides a kind of automobile heat pump air-conditioning system comprising compressor 1, vehicle external heat exchanger 3, Interior heat exchanger 4 and first throttling device 6 further include parallel branch 15, and the first end of the parallel branch 15 is connected to institute State the position between vehicle external heat exchanger 3 and the first throttling device 6, the second end of the parallel branch 15 is connected to the pressure Position between contracting machine 1 and the interior heat exchanger 4;
Second throttling device 7 and phase-change accumulation energy module 8, the phase-change accumulation energy mould are additionally provided in the parallel branch 15 Block 8 can carry out heat exchange by the heat storage of the generation of the heat generating component in automobile and with the refrigerant in the parallel branch 15.
The present invention is by setting parallel branch, and second throttling device and phase-change accumulation energy mould are arranged in parallel branch The heat that heat generating component generates can be stored, and it is exchanged heat with the refrigerant in parallel branch by block, can be effective The heat of the generation of the heat generating component (especially battery pack) in automobile is utilized in ground, is collected and is stored in phase-change accumulation energy module In, and low-grade heat source when as defrost, when defrost may be implemented, interior side heat exchanger is not passed through low temperature refrigerant, subtracts Temperature fluctuation in few cabin improves interior comfort;Simultaneously because without freezing to interior, it will not on indoor heat exchanger Condensed water is generated, caused vehicle window fogging after the conventional defrost that commutates just effectively is solved the problems, such as, promotes safety traffic coefficient.
The present invention designs a battery pack waste heat that can use and provides the heat pump air conditioning system of defrost heat, particularly the winter The waste heat that battery pack is released when Ji Liyong phase-change accumulation energy module collection heating operation, then needs to carry out defrost in air-conditioning system and follows Required heat when ring as low-grade heat source offer defrost, low-temperature refrigerant is not passed through inside heat exchanger when realizing defrost, Reduce influence of the commutation defrost to temperature in cabin and driving safety;
Can use conventional coolant system (waste heat heat dissipation circulation loop) by phase-change accumulation energy module reduces battery pack Temperature, using conventional chilling liquid system cooling be unable to satisfy require when, can synchronize using refrigerant flow path to battery pack Cooling, promotes the reliability of battery pack, impact when energy-storage module can also buffer temperature change dramatically to battery performance is prolonged Long battery life;Cooling passage and coolant channel are existed simultaneously in phase-change accumulation energy module, when summer battery pack needs to cool down The cooling cycle of both of which can be provided, battery pack difference cooling demand is met.
Preferably,
Further include waste heat heat dissipation circulation loop 16 (i.e. coolant line), is provided on the waste heat heat dissipation circulation loop 16 Heat generating component heat exchanger 10, the heat generating component heat exchanger 10 can exchange heat to the heat generating component, and the waste heat radiates Circulation loop 16 through in the phase-change accumulation energy module 8, with the refrigerant in the parallel branch 15 (i.e. refrigerant line) It exchanges heat.
This is further preferred constructive form of the invention, i.e., can be to heat generating component by heat generating component heat exchanger (battery pack preferably in automobile) exchanges heat, and absorbs heat caused by heat generating component, and be recycled back to by waste heat heat dissipation The heat is taken out of by fluid in road, until being stored in phase-change accumulation energy module, when heat pump air conditioning system needs to defrost Heat in the phase-change accumulation energy module is released, it is made to exchange heat with the refrigerant in parallel branch, is transferred heat to The heat is used for defrost by refrigerant, influences comfort level and interior generation fogging to avoid heat absorption is made from inside the car.Also, phase Become in energy-storage module and exist simultaneously cooling passage and coolant channel, two kinds can be provided when summer, battery pack needed to cool down The cooling cycle of mode meets battery pack difference cooling demand.
Preferably,
Coolant liquid (preferably water) is circulated in the waste heat heat dissipation circulation loop 16,
And 11 (preferably swelling water of liquid pump 9 and/or liquid reserve tank is additionally provided on waste heat heat dissipation circulation loop 16 Case).This is the preferred coolant liquid of flow-through fluid in waste heat heat dissipation circulation loop of the invention, is enough flowed by water energy to exchange heat Heat generating component (preferred battery group) is cooled down at device, and realizes the carrying and transmitting effect of heat, in phase-change accumulation energy Module is by heat storage and defrost at the appropriate time utilizes, and is capable of providing pumping water flow flowing by liquid pump (preferably water pump) Power, liquid reserve tank is to store coolant liquid.
Preferably,
The heat generating component is the battery pack in automobile, and the system also includes the temperature inspections for being able to detect battery pack temperature Element is surveyed, and the position adjacent with the battery pack is arranged in the phase-change accumulation energy module 8.Heat generating component is selected as in automobile Battery pack, the expense that can be generated battery pack by air conditioning for automobiles heat pump system recycles, and for change outside heat pump system vehicle Defrost is carried out when hot device frosting, battery pack temperature is capable of detecting when by temperature detecting element, and its temperature is judged according to temperature It is whether excessively high, if conventional coolant liquid cooling has been unable to satisfy demand, battery pack temperature cannot be reduced in safe range, At this time the safety of battery pack can be improved by opening phase-change accumulation energy module to cool down simultaneously by refrigerant heat exchange to battery Service performance.
Preferably,
The first throttling device 6 includes the first electric expansion valve and the first shut-off valve;And/or the second throttling dress Setting 7 includes the second electric expansion valve and the second shut-off valve.This is the preferred specific knot of the first and second throttling sets of the invention Configuration formula can carry out decompressional expansion to the refrigerant flowed through in corresponding pipeline while also can control the pipeline to carry out on-off work With.
Then the waste heat that battery pack is released when the present invention utilizes phase-change accumulation energy module collection heating operation is needed in air-conditioning system Required heat when providing defrost as low-grade heat source when carrying out defrost circulation, low-temperature refrigerant is not passed through when realizing defrost Inside heat exchanger reduces influence of the commutation defrost to temperature in cabin and driving safety.
Implementation method is as follows:
Fig. 1 is system structure schematic diagram, and whole system includes motor compressor 1, four-way valve 2, vehicle external heat exchanger 3, car Heat exchanger 4, fluid reservoir 5, first throttling device 6, second throttling device 7, phase-change accumulation energy module 8, liquid pump 9, heat generating component changes Hot device 10, liquid reserve tank 11;Compressor 1 is connected by four-way valve 2 with interior heat exchanger 4 and vehicle external heat exchanger 3, and fluid reservoir 5 passes through Four-way valve 2 is connected with compressor 1;Interior heat exchanger 4 and vehicle external heat exchanger 3 are connected together by first throttling device 6;Vehicle changes outside Second throttling device 7 is connected to before hot device 3 and phase-change accumulation energy module 8;Liquid pump 9 stores up heat generating component heat exchanger 10 and phase transformation The cooling branch of energy module 8 links together.
Fig. 2 is the first refrigeration cycle, and second throttling device 7 is in close state, the high temperature and pressure come out from compressor 1 Gas flow to vehicle external heat exchanger 3 through four-way valve 2, throttle after cooling through first throttling device 6, evaporated in heat exchanger 4 in the car Compressor is returned to after heat absorption, completes circulation.Synchronous detection battery pack temperature opens liquid pump 9 if temperature is greater than a value, utilizes Heat generating component heat exchanger 10 cools down to the coolant liquid of battery pack, achievees the purpose that reduce battery pack temperature.
Fig. 3 is second of refrigeration cycle, detects that battery pack temperature is greater than b value, cannot have been expired using coolant liquid cooling The requirement of sufficient battery pack temperature drop, needs cooling using refrigerant at this time, and second throttling device 7 opens certain aperture, in regulating system Refrigerant flow, realized while meeting temperature drop requirement in cabin and give battery pack cooling, specific circulation is, by exchanging heat outside vehicle The condensed refrigerant of device 3, is divided into two-way, and interior heat exchanger 4 is flowed into after throttling all the way and is evaporated, phase transformation storage is flowed into after throttling all the way Then energy module 8 returns to compressor after the mixing of two-way refrigerant, completes circulation.
Fig. 4 is heating circulation, and second throttling device 7 is in close state, the high temperature and high pressure gas warp come out from compressor 1 Heat exchanger 4 into the car after four-way valve 2, throttle after condensation through first throttling device 6, then flow into vehicle external heat exchanger 3, then return It completes to recycle to compressor.At the same time, the waste heat that phase-change accumulation energy module 8 generates battery pack during this period stores.
Fig. 5 is defrost circulation, when detecting defrosting signal, closes first throttling device 6, opens second throttling device 7, The refrigerant that compressor 1 comes out flows into vehicle external heat exchanger 3, and condensed refrigerant enters phase after the throttling of second throttling device 7 Become energy-storage module 8 to exchange heat, is then return to compressor, when detecting defrost end signal, exits this circulation.
Preferably,
As shown in fig. 6, the compressor 1 is air injection enthalpy-increasing compressor, in the vehicle external heat exchanger 3 and the interior heat exchange Flash evaporation 13 is also connected between device 4, the flash evaporation 13 further includes middle pressure output end and medium pressure output end and the spray Be pressed into port connection in gas enthalpy-increasing compressor, the flash evaporation 13 further include low-voltage output and the low-voltage output with The car heat exchanger 4 connects.This is the first alternate embodiments of heat pump air conditioning system of the invention, passes through air injection enthalpy-increasing pressure Contracting machine and flash evaporation can be realized the function and effect of increasing enthalpy, can further avoid heat pump air conditioning system low temperature environment outside vehicle Under be unable to run can not normal defrost the case where, the cooling and warming performance of lifting system, improve system operate normally degree.
Preferably,
Third electric expansion valve 12 is additionally provided between the low-voltage output and the interior heat exchanger 4.Pass through setting The third electric expansion valve can control the pipeline.
Preferably,
It as shown in FIG. 7 and 8, further include electric heating component 14, the setting of electric heating component 14 is changed in the car The position of hot device 4, with can to flow through the electric heating component 14 air carry out heat temperature raising.This is that heat pump of the invention is empty Second alternate embodiments of adjusting system, such as Fig. 7, i.e. setting electric heating component can open electricity when system defrost recycles and add Heat realizes in cabin uninterruptedly for heat function, may be implemented in low-temperature heating that system heating capacity is unable to satisfy when requiring, and opens Increase system heating capacity is opened, in defrost circulation, PTC is opened and realizes uninterrupted heat supply in cabin.Such as Fig. 8, this is of the invention Second alternate embodiments of heat pump air conditioning system, i.e., increasing enthalpy structure and electric heating component are arranged jointly, while realizing increasing The function of enthalpy and electricity auxiliary heating, comfort in cabin when promoting defrost while being able to ascend the cooling and warming performance of system.
Preferably,
The electric heating component 14 is PTC electric heating component.This is preferred kind of electric heating component of the invention Class can be realized positive temperature coefficient fever, i.e., heat always to air-flow, improve the level of comfort of indoor heating.
Preferably,
It is additionally provided with four-way valve 2 in the outlet end of the compressor 1, four ends of the four-way valve 2 are connected respectively to institute State vehicle external heat exchanger 3, the interior heat exchanger 4, the outlet end of the compressor and the input end of the compressor.Pass through setting Four-way valve can carry out pattern switching control to heat pump air conditioning system, meet the use demand of interior user, realize heating mould The control and switching control of formula, refrigeration mode and defrost pattern isotype.
The present invention also provides a kind of control methods of automobile heat pump air-conditioning system, use preceding described in any item automobile heat Pump air conditioner system carries out refrigeration mode control, heating mode control, defrost pattern control and refrigerant refrigerating mode control to automobile System and pattern switching control.
The present invention can store the heat that heat generating component generates, and it is changed with the refrigerant in parallel branch Heat can efficiently utilize the heat that the heat generating component (especially battery pack) in automobile generates, be collected and be stored in phase Become in energy-storage module, and low-grade heat source when as defrost, when defrost may be implemented, interior side heat exchanger is not passed through low Warm refrigerant reduces the temperature fluctuation in cabin, reduces influence of the commutation defrost to temperature in cabin and driving safety, improves interior Comfort;Simultaneously because condensed water will not be generated on indoor heat exchanger without freezing to interior, conventional change just effectively is solved Caused vehicle window fogging problem after to defrost promotes safety traffic coefficient;
Can use conventional coolant system (waste heat heat dissipation circulation loop) by phase-change accumulation energy module reduces battery pack Temperature, using conventional chilling liquid system cooling be unable to satisfy require when, can synchronize using refrigerant flow path to battery pack Cooling, promotes the reliability of battery pack, impact when energy-storage module can also buffer temperature change dramatically to battery performance is prolonged Long battery life;Cooling passage and coolant channel are existed simultaneously in phase-change accumulation energy module, when summer battery pack needs to cool down The cooling cycle of both of which can be provided, battery pack difference cooling demand is met.
Preferably,
When being additionally provided with four-way valve 2 in the outlet end of the compressor 1, four ends of the four-way valve 2 are connected respectively to The vehicle external heat exchanger 3, the interior heat exchanger 4, the outlet end of the compressor and the compressor input end when:
When needing to run in cooling mode, the unlatching of first throttling device 6, the second throttling device 7 are controlled Close, control the four-way valve 2 outlet end of the compressor is connected to the vehicle external heat exchanger 3, the compressor Input end is connected to the interior heat exchanger 4;
When needing to run in a heating mode, the unlatching of first throttling device 6, the second throttling device 7 are controlled Close, control the four-way valve 2 outlet end of the compressor is connected to the car heat exchanger 4, the compressor Input end is connected to the vehicle external heat exchanger 3;
When needing to operate under defrost pattern, the closing of first throttling device 6, the second throttling device 7 are controlled Open, control the four-way valve 2 outlet end of the compressor is connected to the vehicle external heat exchanger 3, the compressor Input end is connected to the phase-change accumulation energy module 8.
This is the specific of the specific refrigeration mode of automobile heat pump air-conditioning system of the invention, heating mode and defrost pattern Control means and control method can effectively realize interior refrigeration, heating and defrosting function and the effect of vehicle external heat exchanger, And heat needed for providing defrost by phase-change accumulation energy module avoids being made from inside the car heat absorption when defrost and influencing interior comfortable Degree, and car is avoided fog occur, simultaneously effective the heat of battery pack is absorbed and utilized, promotes battery pack Reliability, impact when energy-storage module can also buffer temperature change dramatically to battery performance extend battery life;Phase transformation storage Cooling passage and coolant channel can be existed simultaneously in module, both of which can be provided when summer battery pack needs to cool down Cooling cycle meets battery pack difference cooling demand.
Preferably,
When the heat generating component is battery pack, the system also includes the temperature detecting elements for being able to detect battery pack temperature When, and when the temperature for detecting battery pack is greater than preset value, then enter refrigerant refrigerating mode:
It controls the first throttling device 6 and the second throttling device 7 is opened, control the four-way valve 2 and make institute The outlet end for stating compressor is connected to the vehicle external heat exchanger 3, the input end of the compressor and the interior heat exchanger 4 and institute It states phase-change accumulation energy module 8 to be respectively communicated with, so that the parallel branch 15 is arranged in parallel in the first throttling device 6 and the vehicle The both ends of interior 4 series pipe of heat exchanger.
This is that heat pump air conditioning system of the invention carries out the control of refrigerant refrigerating mode, that is, is needed to heat generating component (preferably Battery pack) carry out cooling heat absorption when, by heat storage into energy-storage module, when heat pump air conditioning system needs defrost again by the heat Amount is released, the preferably waste heat heat dissipation circulation loop operating (summer battery pack temperature high) at summer, by phase-change accumulation energy module with Refrigerant exchanges heat, the temperature of battery pack is greatly reduced;Waste heat heat dissipation circulation loop inoperative (winter battery pack when winter Temperature is not very high), it is exchanged heat by the heat stored in phase-change accumulation energy module with refrigerant, to defrost to vehicle external heat exchanger Heat is provided;To carry out reasonable utilization, prevents from influencing comfort level from car heat absorption and prevent vehicle mist, utilizing The cooling of conventional chilling liquid system is unable to satisfy when requiring, and can be synchronized and be cooled down using refrigerant flow path to battery pack, promote battery The reliability of group, impact when energy-storage module can also buffer temperature change dramatically to battery performance extend battery life;Phase Become in energy-storage module and exist simultaneously cooling passage and coolant channel, two kinds of moulds can be provided when summer battery pack needs to cool down The cooling cycle of formula meets battery pack difference cooling demand.
The foregoing is merely illustrative of the preferred embodiments of the present invention, is not intended to limit the invention, all in essence of the invention Made any modifications, equivalent replacements, and improvements etc., should all be included in the protection scope of the present invention within mind and principle.With It is only the preferred embodiment of the present invention described in upper, it is noted that for those skilled in the art, not Under the premise of being detached from the technology of the present invention principle, several improvements and modifications can also be made, these improvements and modifications also should be regarded as this The protection scope of invention.

Claims (13)

1. a kind of automobile heat pump air-conditioning system, it is characterised in that:
It further include parallel branch including compressor (1), vehicle external heat exchanger (3), interior heat exchanger (4) and first throttling device (6) (15), and the first end of the parallel branch (15) be connected to the vehicle external heat exchanger (3) and the first throttling device (6) it Between position, the parallel branch (15) second end be connected between the compressor (1) and the interior heat exchanger (4) Position;
Second throttling device (7) and phase-change accumulation energy module (8), the phase-change accumulation energy are additionally provided on the parallel branch (15) Module (8) can be carried out by the heat storage of the generation of the heat generating component in automobile and with the refrigerant in the parallel branch (15) Heat exchange.
2. automobile heat pump air-conditioning system according to claim 1, it is characterised in that:
Further include waste heat heat dissipation circulation loop (16), is provided with heat generating component heat exchanger on waste heat heat dissipation circulation loop (16) (10), the heat generating component heat exchanger (10) can exchange heat to the heat generating component, and waste heat heat dissipation circulation loop (16) through in the phase-change accumulation energy module (8), to exchange heat with the refrigerant in the parallel branch (15).
3. automobile heat pump air-conditioning system according to claim 2, it is characterised in that:
Circulate coolant liquid in waste heat heat dissipation circulation loop (16),
And liquid pump (9) and/or liquid reserve tank (11) are additionally provided in waste heat heat dissipation circulation loop (16).
4. automobile heat pump air-conditioning system according to claim 1, it is characterised in that:
The heat generating component is the battery pack in automobile, and the system also includes the temperature detection members for being able to detect battery pack temperature Part, and the position adjacent with the battery pack is arranged in the phase-change accumulation energy module (8).
5. automobile heat pump air-conditioning system according to claim 1, it is characterised in that:
The first throttling device (6) includes the first electric expansion valve and the first shut-off valve;And/or the second throttling device It (7) include the second electric expansion valve and the second shut-off valve.
6. automobile heat pump air-conditioning system according to any one of claims 1-5, it is characterised in that:
It is additionally provided with four-way valve (2) in the outlet end of the compressor (1), four ends of the four-way valve (2) are connected respectively to The vehicle external heat exchanger (3), the interior heat exchanger (4), the outlet end of the compressor and the input end of the compressor.
7. automobile heat pump air-conditioning system according to claim 1 to 6, it is characterised in that:
The compressor (1) is air injection enthalpy-increasing compressor, between the vehicle external heat exchanger (3) and the interior heat exchanger (4) It is also connected with flash evaporation (13), the flash evaporation (13) further includes middle pressure output end and medium pressure output end and the jet Be pressed into port connection in enthalpy-increasing compressor, the flash evaporation (13) further include low-voltage output and the low-voltage output with The car heat exchanger (4) connects.
8. automobile heat pump air-conditioning system according to claim 7, it is characterised in that:
Third electric expansion valve (12) are additionally provided between the low-voltage output and the interior heat exchanger (4).
9. automobile heat pump air-conditioning system according to claim 1 to 8, it is characterised in that:
Further include electric heating component (14), the electric heating component (14) setting the interior heat exchanger (4) position, Heat temperature raising can be carried out to the air for flowing through the electric heating component (14).
10. automobile heat pump air-conditioning system according to claim 9, it is characterised in that:
The electric heating component (14) is PTC electric heating component.
11. a kind of control method of automobile heat pump air-conditioning system, it is characterised in that: using described in any one of claim 1-10 Automobile heat pump air-conditioning system, to automobile carry out refrigeration mode control, heating mode control, defrost pattern control and refrigerant it is cold But scheme control and pattern switching control.
12. control method according to claim 11, it is characterised in that:
It is additionally provided with four-way valve (2) when in the outlet end of the compressor (1), four ends of the four-way valve (2) are separately connected To the vehicle external heat exchanger (3), the interior heat exchanger (4), the outlet end of the compressor and the input end of the compressor When:
When needing to run in cooling mode, the first throttling device (6) unlatching, the second throttling device (7) are controlled Close, control the four-way valve (2) outlet end of the compressor is connected to the vehicle external heat exchanger (3), the compression The input end of machine is connected to the interior heat exchanger (4);
When needing to run in a heating mode, the first throttling device (6) unlatching, the second throttling device (7) are controlled Close, control the four-way valve (2) make the outlet end of the compressor with it is described car heat exchanger (4) be connected to, the compression The input end of machine is connected to the vehicle external heat exchanger (3);
When needing to operate under defrost pattern, the first throttling device (6) closing, the second throttling device (7) are controlled Open, control the four-way valve (2) outlet end of the compressor is connected to the vehicle external heat exchanger (3), the compression The input end of machine is connected to the phase-change accumulation energy module (8).
13. control method according to claim 11 or 12, it is characterised in that:
When the heat generating component is battery pack, the system also includes when the temperature detecting element for being able to detect battery pack temperature, And when the temperature for detecting battery pack is greater than preset value, then enter refrigerant refrigerating mode:
It controls the first throttling device (6) and the second throttling device (7) is opened, control the four-way valve (2) and make The outlet end of the compressor is connected to the vehicle external heat exchanger (3), the input end of the compressor and the interior heat exchanger (4) it is respectively communicated with the phase-change accumulation energy module (8), is filled so that the parallel branch (15) is arranged in parallel in the first throttle Set the both ends of (6) and described interior heat exchanger (4) series pipe.
CN201810697434.XA 2018-06-29 2018-06-29 A kind of automobile heat pump air-conditioning system and control method Pending CN108973587A (en)

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Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109774409A (en) * 2018-12-26 2019-05-21 爱驰汽车有限公司 Automotive thermal tube manages system
CN109910544A (en) * 2019-02-12 2019-06-21 上海交通大学 Thermal management system of electric automobile
CN110293817A (en) * 2019-06-24 2019-10-01 珠海格力电器股份有限公司 A kind of Heat Pump Air Conditioning System for Electric Vehicles and its Defrost method
CN110816213A (en) * 2019-11-27 2020-02-21 安徽江淮汽车集团股份有限公司 Automobile heat pump system and fuel cell automobile
CN112373267A (en) * 2020-11-18 2021-02-19 浙江银轮机械股份有限公司 Air-conditioning box

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109774409A (en) * 2018-12-26 2019-05-21 爱驰汽车有限公司 Automotive thermal tube manages system
CN109910544A (en) * 2019-02-12 2019-06-21 上海交通大学 Thermal management system of electric automobile
CN109910544B (en) * 2019-02-12 2020-11-06 上海交通大学 Electric automobile thermal management system
CN110293817A (en) * 2019-06-24 2019-10-01 珠海格力电器股份有限公司 A kind of Heat Pump Air Conditioning System for Electric Vehicles and its Defrost method
CN110293817B (en) * 2019-06-24 2021-05-11 珠海格力电器股份有限公司 Electric vehicle heat pump air conditioning system and defrosting method thereof
CN110816213A (en) * 2019-11-27 2020-02-21 安徽江淮汽车集团股份有限公司 Automobile heat pump system and fuel cell automobile
CN110816213B (en) * 2019-11-27 2021-03-16 安徽江淮汽车集团股份有限公司 Automobile heat pump system and fuel cell automobile
CN112373267A (en) * 2020-11-18 2021-02-19 浙江银轮机械股份有限公司 Air-conditioning box

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