CN110345658A - A kind of heat pump system and vehicle for new energy vehicle - Google Patents
A kind of heat pump system and vehicle for new energy vehicle Download PDFInfo
- Publication number
- CN110345658A CN110345658A CN201811649273.3A CN201811649273A CN110345658A CN 110345658 A CN110345658 A CN 110345658A CN 201811649273 A CN201811649273 A CN 201811649273A CN 110345658 A CN110345658 A CN 110345658A
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- China
- Prior art keywords
- refrigerant
- heat exchanger
- vehicle
- pump system
- heat pump
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60H—ARRANGEMENTS OF HEATING, COOLING, VENTILATING OR OTHER AIR-TREATING DEVICES SPECIALLY ADAPTED FOR PASSENGER OR GOODS SPACES OF VEHICLES
- B60H1/00—Heating, cooling or ventilating [HVAC] devices
- B60H1/00357—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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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B13/00—Compression machines, plants or systems, with reversible cycle
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B41/00—Fluid-circulation arrangements
- F25B41/20—Disposition of valves, e.g. of on-off valves or flow control valves
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B41/00—Fluid-circulation arrangements
- F25B41/30—Expansion means; Dispositions thereof
- F25B41/31—Expansion valves
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B2313/00—Compression machines, plants or systems with reversible cycle not otherwise provided for
- F25B2313/027—Compression machines, plants or systems with reversible cycle not otherwise provided for characterised by the reversing means
- F25B2313/02731—Compression machines, plants or systems with reversible cycle not otherwise provided for characterised by the reversing means using one three-way valve
Abstract
The invention discloses a kind of heat pump systems and vehicle for new energy vehicle, are related to technical field of vehicle.The heat pump system for new energy vehicle includes refrigerant circulation loop and motor radiating circulation loop.Wherein, First Heat Exchanger is located in the refrigerant circulation loop and motor radiating circulation loop simultaneously, for the coolant liquid by the heat transfer of the refrigerant in refrigerant circulation loop into motor radiating circulation loop, to improve the temperature of coolant liquid.The present invention also provides a kind of vehicles, including above-mentioned heat pump system.The present invention effectively improves the working efficiency of heat pump system, increases the heating capacity of system by setting First Heat Exchanger.
Description
Technical field
The present invention relates to technical field of vehicle, more particularly to a kind of heat pump system and vehicle for new energy vehicle.
Background technique
With increasingly depleted, the new energy vehicle conduct walking-replacing tool of new generation, gradually by the joyous of people of natural resources
It meets.
Wherein, energy conservation shows particularly important on new energy vehicle, and new energy vehicle is adopted in winter heating at present
With high-pressure water-heating heater, following three types: 1. resistance modes are shared；2.PTC formula；3. resistance wire type, three of the above mould
For formula in order to meet the needs of winter vehicle, energy consumption is high, and low efficiency causes the course continuation mileage of winter vehicle sharply to decline, and energy conservation
Target runs in the opposite direction.
Therefore, to solve this problem, major main engine plants all aim at target in heat pump system at present, in winter, benefit
Heat is provided to vehicle with heat pump system, is used to heat vehicle passenger compartment in this way, being just additionally provided electricity without vehicle battery,
Vehicle energy consumption is reduced to a certain extent, improves the course continuation mileage of vehicle.
Summary of the invention
But the inventors of the present application found that in winter, traditional heat pump system work performance is not good enough, can not expire
The heat demand of sufficient vehicle.Meanwhile present inventor also found, the motor of new energy vehicle at work, can issue big
The heat of amount, this partial heat is usually dispersed into surrounding air in the form of thermal energy and is not fully utilized, if by electric
The heat heat pump system that distributes uses when machine works, and works not good enough status then heat pump system can be effectively relieved.But this
The inventor of application has found again, even if the heat heat pump system distributed when motor is worked uses, though delay to a certain extent
Heat pump system has been solved to work not good enough status, still, the heating capacity of heat pump system is not able to satisfy the heat demand of vehicle still, and
The working efficiency of heat pump system is also very low, if the heat utilization that the refrigerant of indoor condensator outlet position is given out is to heat pump
System, then the working efficiency of heat pump system will be promoted effectively.
Therefore, one of first aspect present invention is designed to provide a kind of heating except work efficiency is high under wet cooling condition
Heat pump system for new energy vehicle.
Another purpose of first aspect present invention is to improve heat pump system heating except the heating capacity under wet cooling condition.
One of second aspect of the present invention is designed to provide a kind of vehicle, and the vehicle includes above-mentioned heat pump system, institute
Stating heat pump system, work efficiency is high in the case where heating except wet cooling condition.
According to the first aspect of the invention, the present invention provides a kind of heat pump systems for new energy vehicle, for making
Cold or/and heat temperature in crew module to adjust the vehicle, the new energy vehicle includes being used to provide the described vehicle
Driving dynamics motor, the heat pump system includes:
Refrigerant circulation loop, including being set to the vehicle external heat exchanger of outside vehicle, being set to the indoor cold of vehicle interior
Condenser and First Heat Exchanger；With
Motor radiating circulation loop, including radiator and the First Heat Exchanger, the radiator is for absorbing the electricity
The heat that coolant liquid distributes in machine heat dissipation circulation loop, while the heat being distributed, the vehicle external heat exchanger is heating
Except the heat that the radiator distributes is absorbed under wet cooling condition to be used for the heat pump system；
Wherein, the First Heat Exchanger includes dissipating for the first coolant channel of refrigerant circulation and for the motor
First cooling passage of the coolant liquid circulation in soft circulation circuit, the First Heat Exchanger go out close to the indoor condenser
The location arrangements of mouth are led to so that the refrigerant flows into first refrigerant after the outlet outflow of the indoor condenser
Road, meanwhile, the First Heat Exchanger is located at the position in the motor radiating circulation loop close to the motor, for described cold
But liquid flows into first cooling passage after flowing through near the motor, wherein in the case where heating removes wet cooling condition, described in inflow
The coolant liquid of first cooling passage absorbs the heat for flowing into the refrigerant of first coolant channel, to improve the cooling
The temperature of liquid.
Further, the motor radiating circulation loop is in contact with electric machine controller, and the coolant liquid is also used to absorb
The heat that the electric machine controller sheds when working, and the heat is distributed.
Further, the vehicle external heat exchanger includes the second refrigerant channel for circulating for refrigerant, the heat dissipation
Device includes the second cooling passage for the circulation of power supply machine coolant liquid, and the second refrigerant channel is cooling close to described second
Liquid channel arrangement, so that the vehicle external heat exchanger and the radiator collectively constitute an integrated radiator.
Further, the integrated radiator includes:
Multiple groups refrigerant flat tube is equipped with multiple refrigerant flow paths in refrigerant flat tube described in every group；
Refrigerant collector tube is set to the both ends of the multiple groups refrigerant flat tube and connects with each refrigerant flow path
It is logical；
Multiple groups coolant liquid flat tube, each coolant liquid flat tube is sheathed on the outside of each refrigerant flat tube, described
Multiple cooling liquid flowing channels are formed between coolant liquid flat tube and the outer surface of the refrigerant flat tube；With
Coolant liquid collector tube is set to the both ends of the multiple groups coolant liquid flat tube and is connected to each cooling liquid flowing channel, institute
It states coolant liquid collector tube to be isolated with the refrigerant collector tube, so that refrigerant is in the refrigerant flat tube and the refrigerant
Circulation, coolant liquid flow in the coolant liquid flat tube and the coolant liquid collector tube in collector tube；
Wherein, the second refrigerant channel includes the multiple groups refrigerant flat tube and the refrigerant collector tube, described
Second cooling passage includes the multiple groups coolant liquid flat tube and the coolant liquid collector tube.
Further, the refrigerant circulation loop includes sequentially connected compressor, interior condenser, the first heat exchange
Device, interior evaporator and vehicle external heat exchanger, when the heat pump system is in heating except wet cooling condition, the refrigerant is by the pressure
Contracting machine sets out, successively by the interior condenser, First Heat Exchanger, the interior evaporator and the vehicle external heat exchanger, most
After return to the compressor；
Optionally, the First Heat Exchanger is plate heat exchanger.
Further, the refrigerant circulation loop further includes the first expansion valve, the second expansion valve and third expansion valve, institute
It states the first expansion valve to be located between the First Heat Exchanger and the interior evaporator, second expansion valve and the third are swollen
Swollen valve is located between the interior evaporator and the vehicle external heat exchanger, wherein second expansion valve is close to the interior steaming
Device is sent out, the third expansion valve is used close to the vehicle external heat exchanger, first expansion valve, the second expansion valve and third expansion valve
In the pressure and temperature that change the refrigerant in the refrigerant circulation loop.
Further, when the refrigerant is by the interior condenser, the refrigerant is released heat to car and is multiplied
Member cabin, to improve the temperature of the car；
When the refrigerant is by the interior evaporator, the refrigerant evaporation endothermic, to reduce the car
Humidity；
When the refrigerant passes through the vehicle external heat exchanger, what the refrigerant evaporation was shed with absorbing the radiator
Heat.
Further, the refrigerant circulation loop further includes three-way solenoid valve, is located at the First Heat Exchanger and described
Between first expansion valve, when the heat pump system is in the heating except wet cooling condition, the three-way solenoid valve allows the system
Cryogen flows through the three-way solenoid valve by the First Heat Exchanger and enters the interior evaporator.
Further, the refrigerant circulation loop further includes gas-liquid separator, be located at the vehicle external heat exchanger with it is described
Between compressor, and it is arranged close to the compressor, the refrigerant for that will enter the compressor carries out gas-liquid separation and will
The gaseous refrigerant isolated is exported to the compressor, to protect the compressor.
According to the second aspect of the invention, the present invention provides a kind of vehicles, including heat pump system described above.
Heat pump system and vehicle for new energy vehicle of the invention, by the way that First Heat Exchanger is arranged, described first is changed
Hot device is in refrigerant circulation loop and motor radiating circulation loop simultaneously, and in the First Heat Exchanger, in heat pump
System heating is except under wet cooling condition, the coolant liquid is freezed by absorbing to flow out from indoor condensator outlet by First Heat Exchanger
The heat that the refrigerant in agent channel distributes is exchanged with improving the temperature of coolant liquid when vehicle external heat exchanger carries out heat with radiator
When, the vehicle external heat exchanger can absorb more heats to refrigerant from radiator, thus improve vehicle external heat exchanger
Operating temperature improves the evaporating temperature of refrigerant in vehicle external heat exchanger, is conducive to the working efficiency for improving heat pump system.
Further, the evaporating temperature for improving refrigerant in vehicle external heat exchanger, also just reduces heat pump system supercooled, increases
Enthalpy difference when outdoor heat exchanger having been added to evaporate, thus effectively increase system heating capacity.Meanwhile it improving and being made in vehicle external heat exchanger
The evaporating temperature of cryogen also just improves the outlet density of refrigerant in vehicle external heat exchanger, thus improves the matter of heat pump system
Flow is measured, to effectively increase system heating capacity.In addition, improving the evaporating temperature of refrigerant in vehicle external heat exchanger, also just improve
The low pressure of system, so that the pressure ratio of system becomes smaller, so that the gas transmission coefficient of compressor and isentropic efficiency are mentioned in system
Height keeps compressor operating more stable in this way, not only reducing the delivery temperature of compressor, and improves the system of system entirety
Hot Energy Efficiency Ratio COP.Meanwhile because pressure ratio reduces, therefore, staff can properly increase system in designing system pressure-enthalpy chart
High pressure increases heat pump system heat exchange amount, thus effectively to improve the air outlet temperature of air handling system HVAC in heat pump system
Promote the comfort level that occupant uses vehicle.
Detailed description of the invention
Some specific embodiments of the present invention is described in detail by way of example and not limitation with reference to the accompanying drawings hereinafter.
Identical appended drawing reference denotes same or similar part or part in attached drawing.It should be appreciated by those skilled in the art that these
What attached drawing was not necessarily drawn to scale.In attached drawing:
Fig. 1 is the functional block diagram of heat pump system according to an embodiment of the invention；
Fig. 2 is the structural schematic diagram of integrated radiator according to an embodiment of the invention；
Fig. 3 is the refrigerant flat tube of integrated radiator according to an embodiment of the invention and the structure of coolant liquid flat tube
Schematic diagram；
Fig. 4 is heating according to an embodiment of the invention except refrigerant flows to schematic diagram under wet cooling condition.
Specific embodiment
Fig. 1 is the functional block diagram of heat pump system according to an embodiment of the invention.As shown in Figure 1, described be used for new energy
The heat pump system of source vehicle is for freezing or/and heating to adjust the temperature in the crew module of the vehicle, the new energy vehicle
Include be used to provide the described vehicle driving dynamics motor 1, the heat pump system includes refrigerant circulation loop and motor
Radiate circulation loop.The refrigerant circulation loop includes the vehicle external heat exchanger 2 for being set to outside vehicle, is set to vehicle interior
Indoor condenser 7 and First Heat Exchanger 14.The motor radiating circulation loop includes radiator 3 and the First Heat Exchanger
14, the radiator 3 dissipates the heat for absorbing the heat that coolant liquid distributes in the motor radiating circulation loop
It sends out, the vehicle external heat exchanger 2 absorbs the heat that the radiator 3 distributes in the case where heating except wet cooling condition to supply the heat pump
System uses.Wherein, the First Heat Exchanger 14 includes the first coolant channel for refrigerant circulation and supplies the electricity
First cooling passage of the coolant liquid circulation in machine heat dissipation circulation loop, the First Heat Exchanger 14 is close to the indoor condensation
The location arrangements of the outlet of device, so that the refrigerant flows into first system after the outlet outflow of the indoor condenser 7
Coolant channel, meanwhile, the First Heat Exchanger 14 is located at the position in the motor radiating circulation loop close to the motor 1,
First cooling passage is flowed into after flowing through near the motor 1 for the coolant liquid, wherein remove wet cooling condition in heating
Under, the coolant liquid for flowing into first cooling passage absorbs the heat for flowing into the refrigerant of first coolant channel, with
Improve the temperature of the coolant liquid.
Herein, the First Heat Exchanger 14 can be plate heat exchanger in the prior art, have one by a series of
The sheet metal closed assembly for determining corrugated shape forms, and thin rectangular shape channel is formed between each plate, carries out heat exchange by plate, this
Field technical staff has been well known, and details are not described herein.The new energy vehicle can be electric vehicle, electric vehicle mainly by
Motor, which provides driving dynamics, runs vehicle.As shown in Figure 1, the refrigerant circulation loop may include by a, b, c, d, e
The circuit formed with f pipeline, the motor radiating circulation loop may include the circuit formed by g, h, j and k pipeline.
Heat pump system for new energy vehicle of the invention, by the way that First Heat Exchanger 14, the First Heat Exchanger is arranged
14 are in refrigerant circulation loop and motor radiating circulation loop simultaneously, and in the First Heat Exchanger 14, in heat pump
System heating is except under wet cooling condition, the coolant liquid passes through First Heat Exchanger 14 by absorbing the outflow from indoor 7 exit of condenser
The heat that the refrigerant of coolant channel distributes is to improve the temperature of coolant liquid, when vehicle external heat exchanger 2 and radiator 3 carry out heat
When exchange, the vehicle external heat exchanger 2 can absorb more heats to refrigerant from radiator 3, thus improve and change outside vehicle
The operating temperature of hot device 2, improves the evaporating temperature of refrigerant in vehicle external heat exchanger 2, is conducive to the work for improving heat pump system
Efficiency.
Further, the evaporating temperature for improving refrigerant in vehicle external heat exchanger 2, also just reduces heat pump system supercooled,
Enthalpy difference when outdoor heat exchanger 2 evaporates is increased, thus effectively increases system heating capacity.Meanwhile improving vehicle external heat exchanger
The evaporating temperature of middle refrigerant also just improves the outlet density of refrigerant in vehicle external heat exchanger 2, thus improves heat pump system
Mass flow, to effectively increase system heating capacity.In addition, improving the evaporating temperature of refrigerant in vehicle external heat exchanger 2, also
The low pressure of system is improved, so that the pressure ratio of system becomes smaller, so that the gas transmission coefficient of compressor and isentropic efficiency obtain in system
It improves, in this way, not only reducing the delivery temperature of compressor, keeps compressor operating more stable, and improve system entirety
Heating energy efficiency ratio COP.Meanwhile because pressure ratio reduces, therefore, staff can properly increase in designing system pressure-enthalpy chart
System high pressure increases heat pump system heat exchange amount to improve the air outlet temperature of air handling system HVAC in heat pump system, thus
Effectively promote the comfort level that occupant uses vehicle.
Specifically, the coolant liquid is also as shown in Figure 1, the motor radiating circulation loop is in contact with electric machine controller 4
For absorbing the heat to shed when the electric machine controller 4 work, and the heat is distributed.In this way, the heat pump system
System also uses the heat generated when the electric machine controller 4 work, the capacity usage ratio of vehicle is further improved, also into one
Step improves the working efficiency of heat pump system, meanwhile, the heat generated when electric machine controller 4 is worked passes through motor radiating in time
Circulation loop distributes, and is also beneficial to extend the working life of electric machine controller 4.
Further, as shown in Figure 1, the vehicle external heat exchanger 2 includes that second refrigerant for circulating for refrigerant is logical
Road, the radiator 3 include for power supply machine coolant liquid circulation the second cooling passage, the second refrigerant channel close to
The second cooling passage arrangement, so that the vehicle external heat exchanger 2 and the radiator 3 collectively constitute integrated form heat dissipation
Device 5.
Arranged by second refrigerant channel close to the second cooling passage so that the vehicle external heat exchanger 2 with it is described
Radiator 3 collectively constitutes an integrated radiator 5, so that it may when heat pump system is in heating except wet cooling condition, vehicle external heat exchanger 2
In time and the heat in radiator 3 is fully absorbed, improves the utilization rate of energy, meanwhile, vehicle external heat exchanger 2 and radiator 3 are total
With composition integrated heat exchanger 5, vehicle external heat exchanger 2 and radiator 3 are connected without additional components, so that vehicle external heat exchanger
2 can be absorbed into the heat in radiator 3, therefore, can effectively reduce the components of heat pump system, greatly reduce cost.
Herein, the vehicle external heat exchanger 2 can be the vehicle external heat exchanger in ordinary hot pumping system, and the radiator 3 can
The radiator for being used to absorb heat in water route in common thermal management system of whole by waterway circulating is thought, in the arrangement of vehicle
On, it by above-mentioned two component arrangement close to each other and can be contained in a shell, the integrated radiator 5 is
It can be the shell.
Certainly, integrated radiator 5 composed by vehicle external heat exchanger 2 and radiator 3 may not be those skilled in the art
Structure known to member, in an embodiment of the invention, Fig. 2 is integrated radiator according to an embodiment of the invention
Structural schematic diagram, Fig. 3 are the refrigerant flat tube and coolant liquid flat tube of integrated radiator according to an embodiment of the invention
Structural schematic diagram.Referring to Fig. 1, referring also to Fig. 2, the present embodiment is illustrated based on Fig. 2.The integrated radiator 5
It may include multiple groups refrigerant flat tube 15, refrigerant collector tube 16, multiple groups coolant liquid flat tube 17 and coolant liquid collector tube 18.Such as figure
Shown in 3, multiple refrigerant flow paths 19 are equipped in every group of refrigerant flat tube 15.Refrigerant collector tube 16 is set to multiple groups refrigerant
It the both ends of flat tube 15 and is connected to each refrigerant flow path 19.As shown in figure 3, each coolant liquid flat tube 17 is sheathed on each refrigeration
The outside of agent flat tube 15 is formed with multiple cooling liquid flowing channels 20 between coolant liquid flat tube 17 and the outer surface of refrigerant flat tube 15.
Coolant liquid collector tube 18 is set to the both ends of multiple groups coolant liquid flat tube 17 and is connected to each cooling liquid flowing channel 20, coolant liquid liquid collecting
Pipe 18 is isolated with refrigerant collector tube 16, so that refrigerant circulates in refrigerant flat tube 15 and refrigerant collector tube 18, it is cold
But liquid flows in coolant liquid flat tube 17 and coolant liquid collector tube 18.In this way, above structure is by vehicle external heat exchanger 2 and radiator 3
It is integrated together, collectively constitutes integrated radiator 5.Wherein, the coolant liquid can be water.
Further, in an embodiment of the invention, as shown in Figure 1, the refrigerant circulation loop includes successively connecting
Compressor 6, interior condenser 7, First Heat Exchanger 14, interior evaporator 8 and the vehicle external heat exchanger 2 connect, when the heat pump system
When in heating except wet cooling condition, Fig. 4 is flow direction signal of the heating according to an embodiment of the invention except refrigerant under wet cooling condition
Figure, wherein arrow direction represents refrigerant flow direction in figure, as shown in Fig. 2, the refrigerant is by the compressor 6, successively
By the interior condenser 7, the First Heat Exchanger 14, the interior evaporator 8 and the vehicle external heat exchanger 2, finally return
Guarantee the comfort of passenger riding to the compressor 2 to provide heat to vehicle passenger compartment.Meanwhile the refrigerant circulation
Circuit further includes the first expansion valve 9, the second expansion valve 10 and third expansion valve 11, and first expansion valve 9 is located at described first
Between heat exchanger 14 and the interior evaporator 8, second expansion valve 10 and the third expansion valve 11 are located at the car
Between evaporator 8 and the vehicle external heat exchanger 2, wherein second expansion valve 10 is close to the interior evaporator 8, and described the
Three expansion valves 11 are used for close to the vehicle external heat exchanger 2, first expansion valve 9, the second expansion valve 10 and third expansion valve 11
Change the pressure and temperature of the refrigerant in the refrigerant circulation loop.
Refrigerant circulation loop of the invention passes through compressor 6, interior condenser 7, car in the case where heating removes wet cooling condition
Evaporator 8 and vehicle external heat exchanger 2 are connected, and are made by the throttling of the first expansion valve 9, the second expansion valve 10 and third expansion valve 11
With, enable refrigerant work normally guarantee heat pump system working efficiency and work safety, compared to conventional heat pump system
It is heating except under wet cooling condition, refrigerant is divided into two-way after flowing through interior condenser from compressor and returns to compressor, wherein one
Road is flowed out after the throttling action of expansion valve enters the heat exchange of vehicle external heat exchanger, and the guide functions through solenoid valve return to compressor,
Another way dehumidifies by the evaporator heat absorption into the car of the throttling action of expansion valve again after the guide functions of solenoid valve, then from
The car evaporator outflow returns to compressor, heat pump system of the invention after refrigerant pressure balanced valve carries out pressure adjusting
System can reduce solenoid valve quantity and refrigerant pressure balanced valve in heat pump system refrigerant circuit by reasonable layout of beam line,
Therefore the framework for not only greatlying simplify heat pump system, so that the control of system becomes simply, so that the cloth of system in the car
Difficulty reduction is set, productive temp is improved, also effectively reduces the manufacturing cost of system, alleviate the load-carrying of vehicle, effectively improve
Production efficiency.
Further, heating is in except wet cooling condition works, when the refrigerant is by the interior condensation in heat pump system
When device 7, the refrigerant releases heat to passenger cabin, to improve the temperature of the car, when the refrigerant passes through institute
When stating interior evaporator 8, a part of evaporation endothermic in the refrigerant causes the water vapour heat release and liquid in passenger cabin
It is melted into droplet, to reduce the humidity of the car, when the refrigerant passes through the vehicle external heat exchanger 2, the refrigerant
In another part evaporate to absorb the heat that the radiator sheds.Herein, refrigerant steams in entering vehicle external heat exchanger 2
It when hair, first passes around and is evaporated in interior evaporator 8, can play to interior exsiccation, while passing through the second expansion valve 10
Enter refrigerant smoothly in vehicle external heat exchanger 2 from interior evaporator 8 with the throttling action of third expansion valve 11, can save
The equilibrated valve being arranged in common heat pump system, effectively reduces cost, also complies with the light-weight design of vehicle.
In addition, the refrigerant circulation loop can also include three-way solenoid valve 12, it is located at 14 He of First Heat Exchanger
Between first expansion valve 9, when the heat pump system is in the heating except wet cooling condition, the three-way solenoid valve 12 allows
The refrigerant flows through the three-way solenoid valve 12 by the First Heat Exchanger 14 and enters the interior evaporator 8.It is described simultaneously
Refrigerant circulation loop can also include gas-liquid separator 13, between the vehicle external heat exchanger 2 and the compressor 6, and
It is arranged close to the compressor 6, the gaseous state for carrying out gas-liquid separation and isolating the refrigerant for entering the compressor 6
Refrigerant is exported to the compressor 6, to protect the compressor 6.
Particularly, the present invention also provides a kind of vehicles, including heat pump system described above.
Since the vehicle includes the heat pump system, pass through setting First Heat Exchanger 14, the First Heat Exchanger
14 are in refrigerant circulation loop and motor radiating circulation loop simultaneously, and in the First Heat Exchanger 14, in heat pump
System heating is except under wet cooling condition, the coolant liquid passes through First Heat Exchanger 14 by absorbing the outflow from indoor 7 exit of condenser
The heat that the refrigerant of coolant channel distributes is to improve the temperature of coolant liquid, when vehicle external heat exchanger 2 and radiator 3 carry out heat
When exchange, the vehicle external heat exchanger 2 can absorb more heats to refrigerant from radiator 3, thus improve and change outside vehicle
The operating temperature of hot device 2, improves the evaporating temperature of refrigerant in vehicle external heat exchanger 2, is conducive to the work for improving heat pump system
Efficiency, while increasing the heating capacity of system.
So far, although those skilled in the art will appreciate that present invention has been shown and described in detail herein is exemplary
Embodiment still without departing from the spirit and scope of the present invention, can still directly determine according to the present disclosure
Or derive many other variations or modifications consistent with the principles of the invention.Therefore, the scope of the invention should be understood and defined as
Cover all such other variations or modifications.
Claims (10)
1. a kind of heat pump system for new energy vehicle, in the crew module that the vehicle is adjusted for freezing or/and heating
Temperature, the new energy vehicle includes the motor for being used to provide the described the driving dynamics of vehicle, which is characterized in that the heat pump
System includes:
Refrigerant circulation loop, including being set to the vehicle external heat exchanger of outside vehicle, being set to the indoor condenser of vehicle interior
And First Heat Exchanger；With
Motor radiating circulation loop, including radiator and the First Heat Exchanger, the radiator are dissipated for absorbing the motor
The heat that coolant liquid distributes in soft circulation circuit, while the heat being distributed, the vehicle external heat exchanger dehumidifies in heating
The heat that the radiator distributes is absorbed under operating condition to use for the heat pump system；
Wherein, the First Heat Exchanger includes following for the first coolant channel of refrigerant circulation and for the motor radiating
First cooling passage of the coolant liquid circulation in loop back path, the First Heat Exchanger is close to the outlet of the indoor condenser
Location arrangements, so that the refrigerant flows into first coolant channel after the outlet outflow of the indoor condenser, together
When, the First Heat Exchanger is located at the position in the motor radiating circulation loop close to the motor, for the coolant liquid
First cooling passage is flowed into after flowing through near the motor, wherein in the case where heating removes wet cooling condition, flow into described first
The coolant liquid of cooling passage absorbs the heat for flowing into the refrigerant of first coolant channel, to improve the coolant liquid
Temperature.
2. heat pump system according to claim 1, which is characterized in that the motor radiating circulation loop and electric machine controller
It is in contact, the coolant liquid is also used to absorb the heat to shed when electric machine controller work, and the heat is given out
It goes.
3. heat pump system according to claim 1 or 2, which is characterized in that the vehicle external heat exchanger includes for for refrigeration
The second refrigerant channel of agent circulation, the radiator include the second cooling passage for the circulation of power supply machine coolant liquid, institute
It states second refrigerant channel to arrange close to second cooling passage, so that the vehicle external heat exchanger and the radiator are total
With one integrated radiator of composition.
4. heat pump system according to claim 3, which is characterized in that the integrated radiator includes:
Multiple groups refrigerant flat tube is equipped with multiple refrigerant flow paths in refrigerant flat tube described in every group；
Refrigerant collector tube is set to the both ends of the multiple groups refrigerant flat tube and is connected to each refrigerant flow path；
Multiple groups coolant liquid flat tube, each coolant liquid flat tube are sheathed on the outside of each refrigerant flat tube, the cooling
Multiple cooling liquid flowing channels are formed between liquid flat tube and the outer surface of the refrigerant flat tube；With
Coolant liquid collector tube is set to the both ends of the multiple groups coolant liquid flat tube and is connected to each cooling liquid flowing channel, described cold
But liquid collector tube is isolated with the refrigerant collector tube, so that refrigerant is in the refrigerant flat tube and the refrigerant liquid collecting
Circulation, coolant liquid flow in the coolant liquid flat tube and the coolant liquid collector tube in pipe；
Wherein, the second refrigerant channel includes the multiple groups refrigerant flat tube and the refrigerant collector tube, and described second
Cooling passage includes the multiple groups coolant liquid flat tube and the coolant liquid collector tube.
5. heat pump system according to claim 1, which is characterized in that the refrigerant circulation loop includes sequentially connected
Compressor, interior condenser, First Heat Exchanger, interior evaporator and vehicle external heat exchanger are removed when the heat pump system is in heating
When wet cooling condition, the refrigerant is by the compressor, successively by the interior condenser, First Heat Exchanger, the vehicle
Interior evaporator and the vehicle external heat exchanger, eventually pass back to the compressor；
Optionally, the First Heat Exchanger is plate heat exchanger.
6. heat pump system according to claim 5, which is characterized in that the refrigerant circulation loop further includes the first expansion
Valve, the second expansion valve and third expansion valve, first expansion valve be located at the First Heat Exchanger and the interior evaporator it
Between, second expansion valve and the third expansion valve are located between the interior evaporator and the vehicle external heat exchanger, wherein
For second expansion valve close to the interior evaporator, the third expansion valve is swollen close to the vehicle external heat exchanger, described first
Swollen valve, the second expansion valve and third expansion valve for changing the refrigerant in the refrigerant circulation loop pressure and temperature.
7. heat pump system according to claim 6, which is characterized in that
When the refrigerant is by the interior condenser, the refrigerant releases heat to passenger cabin, to improve
State interior temperature；
When the refrigerant is by the interior evaporator, the refrigerant evaporation endothermic, to reduce the humidity of the car；
When the refrigerant passes through the vehicle external heat exchanger, the refrigerant evaporation is to absorb the heat that the radiator sheds
Amount.
8. heat pump system according to claim 6 or 7, which is characterized in that the refrigerant circulation loop further includes electromagnetism
Triple valve, between the First Heat Exchanger and first expansion valve, when the heat pump system is in heating dehumidifying
When operating condition, the three-way solenoid valve allows the refrigerant to be flowed through described in the three-way solenoid valve entrance as the First Heat Exchanger
Interior evaporator.
9. heat pump system according to claim 8, which is characterized in that the refrigerant circulation loop further includes gas-liquid separation
Device is arranged, for that will enter the compression between the vehicle external heat exchanger and the compressor, and close to the compressor
The refrigerant of machine carries out gas-liquid separation and exports the gaseous refrigerant isolated to the compressor, to protect the compression
Machine.
10. a kind of vehicle, which is characterized in that including heat pump system as claimed in any one of claims 1-9 wherein.
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| CN201811649273.3A CN110345658A (en) | 2018-12-30 | 2018-12-30 | A kind of heat pump system and vehicle for new energy vehicle |
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| CN201811649273.3A CN110345658A (en) | 2018-12-30 | 2018-12-30 | A kind of heat pump system and vehicle for new energy vehicle |
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