CN108128118A - A kind of electric vehicle thermal control system - Google Patents
A kind of electric vehicle thermal control system Download PDFInfo
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- CN108128118A CN108128118A CN201711418635.3A CN201711418635A CN108128118A CN 108128118 A CN108128118 A CN 108128118A CN 201711418635 A CN201711418635 A CN 201711418635A CN 108128118 A CN108128118 A CN 108128118A
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- heat exchanger
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- way valve
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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
- B60H1/00007—Combined heating, ventilating, or cooling 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
- B60H1/00357—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
- B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
- B60L58/00—Methods or circuit arrangements for monitoring or controlling batteries or fuel cells, specially adapted for electric vehicles
- B60L58/10—Methods or circuit arrangements for monitoring or controlling batteries or fuel cells, specially adapted for electric vehicles for monitoring or controlling batteries
- B60L58/24—Methods or circuit arrangements for monitoring or controlling batteries or fuel cells, specially adapted for electric vehicles for monitoring or controlling batteries for controlling the temperature of batteries
- B60L58/26—Methods or circuit arrangements for monitoring or controlling batteries or fuel cells, specially adapted for electric vehicles for monitoring or controlling batteries for controlling the temperature of batteries by cooling
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
- B60L58/00—Methods or circuit arrangements for monitoring or controlling batteries or fuel cells, specially adapted for electric vehicles
- B60L58/10—Methods or circuit arrangements for monitoring or controlling batteries or fuel cells, specially adapted for electric vehicles for monitoring or controlling batteries
- B60L58/24—Methods or circuit arrangements for monitoring or controlling batteries or fuel cells, specially adapted for electric vehicles for monitoring or controlling batteries for controlling the temperature of batteries
- B60L58/27—Methods or circuit arrangements for monitoring or controlling batteries or fuel cells, specially adapted for electric vehicles for monitoring or controlling batteries for controlling the temperature of batteries by heating
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/60—Heating or cooling; Temperature control
- H01M10/61—Types of temperature control
- H01M10/613—Cooling or keeping cold
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/60—Heating or cooling; Temperature control
- H01M10/61—Types of temperature control
- H01M10/615—Heating or keeping warm
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/60—Heating or cooling; Temperature control
- H01M10/62—Heating or cooling; Temperature control specially adapted for specific applications
- H01M10/625—Vehicles
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/60—Heating or cooling; Temperature control
- H01M10/63—Control systems
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M2220/00—Batteries for particular applications
- H01M2220/20—Batteries in motive systems, e.g. vehicle, ship, plane
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/10—Energy storage using batteries
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/60—Other road transportation technologies with climate change mitigation effect
- Y02T10/70—Energy storage systems for electromobility, e.g. batteries
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- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- General Chemical & Material Sciences (AREA)
- Mechanical Engineering (AREA)
- Electrochemistry (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Chemical & Material Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Sustainable Energy (AREA)
- Sustainable Development (AREA)
- Transportation (AREA)
- Power Engineering (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Automation & Control Theory (AREA)
- Air-Conditioning For Vehicles (AREA)
Abstract
The present invention provides a kind of electric vehicle thermal control system, the system comprises：One heat pump air conditioner unit and battery cooling heating unit；The heat pump air conditioner unit cools down heating unit with the battery by First Heat Exchanger outside vehicle and battery cooler and is connected；The heat pump air conditioner unit includes：Compressor, the first two-way valve, interior First Heat Exchanger, the first expansion valve, the outer First Heat Exchanger of vehicle, outer second heat exchanger of vehicle, the second two-way valve, the second expansion valve, interior second heat exchanger, drier receiver and the air heater being arranged in air-conditioning box assembly；The battery cooling heating unit includes：Third expansion valve, battery cooler, third two-way valve, motor and electric machine controller, power battery, liquid heater and water pump.The system can improve heat capacity of the heat pump air conditioner unit under low temperature outer gas environment, while can ensure that battery cools down the suitable of the working environment of heating unit, so as to improve the reliability of vehicle thermal control system and high efficiency.
Description
Technical field
The present invention relates to electric vehicle engineering field more particularly to a kind of electric vehicle thermal control systems.
Background technology
Electric vehicle is environmentally protective to have become one important developing direction of auto industry.Automotive air-conditioning system need to
The environment inside car that passenger provides a thermal comfort is driven, system both needs refrigeration to be also required to heat.Due to electronic
Automobile is not provided with engine, therefore, it is impossible to be used as heat source using the waste heat of engine when heating in winter, in this way, winter supplies
Warm problem is into a focal point.Power battery is the power resources of electric vehicle, by battery operation principle, need to be configured one it is cold
But heating system makes battery work to ensure efficiency for charge-discharge and safety in preference temperature scope.
Electric automobile air-conditioning system winter is mainly using the electrothermal heating mode of gas or liquid heater, system at present
Consumption power is larger during heating mode operation, and for system COP again smaller than 1, these will seriously affect the handling and continuous of electric vehicle
Navigate mileage.
In addition, the heat that the motor and electric machine controller and power battery of automobile generate during the work time does not obtain very
Good utilization, vehicle energy utilization rate are low.
Invention content
The object of the present invention is to provide a kind of electric vehicle thermal control system, which can improve heat pump air conditioner list
Member extraneous ambient air temperature than it is relatively low when (referred to as low temperature outer gas environment, hereafter identical) heat capacity, while can ensure
Battery cools down the suitable of the working environment of heating unit, so as to improve the reliability of vehicle thermal control system and high efficiency.
To achieve these goals, the present invention provides a kind of electric vehicle thermal control system, the system comprises：One heat
Pump air-conditioning unit and battery cooling heating unit；The heat pump air conditioner unit passes through First Heat Exchanger outside vehicle and battery cooler
It is connected with battery cooling heating unit；The heat pump air conditioner unit includes：Compressor, the first two-way valve, car first change
The outer First Heat Exchanger of hot device, the first expansion valve, vehicle, outer second heat exchanger of vehicle, the second two-way valve, the second expansion valve, car second
Heat exchanger, drier receiver and the air heater being arranged in air-conditioning box assembly；Wherein, the compressor is connected to first liang
Port valve, first two-way valve form in parallel, the outer First Heat Exchanger of the vehicle with the interior First Heat Exchanger, the first expansion valve
It is connected respectively with the second heat exchanger outside the first two-way valve and vehicle, outer second heat exchanger of the vehicle is connected to the second two-way valve, described
Second two-way valve forms in parallel with interior second heat exchanger, the second expansion valve, and the drier receiver is respectively with described
Two two-way valves are connected with the compressor；The battery cooling heating unit includes：Third expansion valve, battery cooler, third
Two-way valve, motor and electric machine controller, power battery, liquid heater and water pump；Wherein, the third expansion valve and battery are cold
But device is formed in parallel with second two-way valve, the battery connector be connected to be formed third two-way valve in parallel and motor and
Electric machine controller, the power battery are respectively connected to third two-way valve and liquid heater, and the water pump is respectively connected to liquid
Body heater and the outer First Heat Exchanger of vehicle.
In one embodiment of this invention, the interior First Heat Exchanger and interior second heat exchanger are concurrent flow
Formula；Outer second heat exchanger of the vehicle is sheet string type or parallel flow type；The outer First Heat Exchanger of the vehicle and the battery cooling apparatus
There is the Dual-fluid channel of refrigerant flow path and cooling liquid flowing channel, the outer First Heat Exchanger of the vehicle and the battery cooler pass through system
Refrigerant flow conduit is connect with heat pump air conditioner unit, the outer First Heat Exchanger of the vehicle and the battery cooler by cooling liquid flowing channel with
Battery cooling heating unit connection.
In one embodiment of this invention, the outside of the second heat exchanger is equipped with one first wind turbine outside the vehicle, described
The outside of interior second heat exchanger is equipped with one second wind turbine, and first wind turbine and the second wind turbine change to strengthen outside vehicle second
The heat dissipation of hot device and interior second heat exchanger, to prevent excessive temperature from influencing the normal use of heat pump air conditioner unit.
In one embodiment of this invention, the first temperature sensor is equipped at the air inlet of the second heat exchanger outside the vehicle,
First temperature sensor is to monitor the inlet air temperature of the second heat exchanger outside vehicle in real time, to determine the fortune of heat pump air conditioner unit
Whether row and operating mode need battery cooling heating unit switching to circulation pattern when running, to utilize motor and electric machine controller
With the waste heat of power battery.
In one embodiment of this invention, second temperature sensor, second temperature are equipped in the battery cooler
Degree sensor is used to monitor the temperature in battery cooler in real time.
In one embodiment of this invention, the third expansion valve is the expansion valve with standard-sized sheet and fully closed regulatory function.
In one embodiment of this invention, first expansion valve, the second expansion valve, third expansion valve, the first two-way valve,
Second two-way valve, third two-way valve, the first wind turbine, the second wind turbine, liquid heater and air heater connect with CAN bus
It connects, to realize coordinated signals.
In one embodiment of this invention, operating mode there are three types of the heat pump air conditioner unit tools, including：Refrigeration mode,
Heating mode and dehumidification mode；
When the heat pump air conditioner unit is in refrigeration mode, after refrigerant is discharged by the compressor, by first liang
Port valve, subsequently into First Heat Exchanger outside vehicle, then the second heat exchanger goes out to exchange heat outside the vehicle, then passes through described second
After expansion valve throttling, exchange heat at interior second heat exchanger, the compression is recycled to finally by drier receiver
Machine；
When the heat pump air conditioner unit is in heating mode, after refrigerant is discharged by the compressor, first pass through described
Interior First Heat Exchanger simultaneously exchanges heat, into First Heat Exchanger outside the vehicle after being throttled by first expansion valve, then
It exchanges heat at outer second heat exchanger of the vehicle, is finally back to the compression after the second two-way valve and drier receiver successively
Machine；
When the heat pump air conditioner unit is in dehumidification mode, after refrigerant is discharged by the compressor, first pass through described
Interior First Heat Exchanger heat exchange, after First Heat Exchanger outside the vehicle, exchanges heat outside the vehicle at the second heat exchanger,
After being throttled by second expansion valve, exchange heat at interior second heat exchanger, finally by the liquid-storage drying
Device is recycled to the compressor.
In one embodiment of this invention, operating mode there are four types of the battery cooling heating unit tools, including：Cyclic module
Formula, refrigerating mode, pre-add heat pattern and heating mode；
When battery cooling heating unit is in circulation pattern, after coolant is discharged by the water pump, flow through described
The outer First Heat Exchanger of vehicle, then finally pass through by standby battery cooler, motor and electric machine controller and power battery successively
Standby liquid heater flows back into water pump；
When battery cooling heating unit is in refrigerating mode, after coolant is discharged by the water pump, flow through described
The outer First Heat Exchanger of vehicle, then exchanges heat, then pass through the motor and electric machine controller successively at the battery cooler
With the power battery, finally the water pump is back to by standby liquid heater；Simultaneously in the heat pump air conditioner unit
In, after refrigerant is discharged by the compressor compresses, first two-way valve is first passed through, subsequently into the first heat exchange outside the vehicle
Device, then exchange heat at the second heat exchanger outside the vehicle, after being throttled by the third expansion valve, in the battery cooler
Place exchanges heat, and compressor is recycled to finally by the drier receiver；
When battery cooling heating unit is in pre-add heat pattern, after coolant is discharged by the water pump, institute is flowed through
The outer First Heat Exchanger of vehicle is stated, then passes through standby battery cooler, the third two-way valve and the power battery successively, finally
The water pump is back to after being exchanged heat at the liquid heater；
When battery cooling heating unit is in heating mode, after coolant is discharged by the water pump, flow through described
The outer First Heat Exchanger of vehicle, then pass through standby battery cooler, the motor and electric machine controller and the power battery successively,
Water pump is back to after finally being exchanged heat at the liquid heater.
It is an advantage of the current invention that electric vehicle thermal control system of the present invention is cold by heat pump air conditioner unit and battery
But the joint setting of heating unit, improves heat capacity of the heat pump air conditioner unit under low temperature outer gas environment, while can ensure
Battery cools down the suitable of the working environment of heating unit, so as to improve the reliability of vehicle thermal control system and high efficiency.In addition,
System of the present invention is improved for existing pump type heat automotive air-conditioning system, is effectively improved under low temperature outer gas environment and is
Heat capacity of uniting and efficiency.In addition, system of the present invention is carried out by the way that heat pump air conditioner unit and battery are cooled down heating unit
Combination had not only improved the thermal comfort of driving, but also has ensured the safe and efficient work of power battery.Furthermore system of the present invention
By by compressor, two-way valve, expansion valve, wind turbine, liquid heater, air heater and air-conditioning box controller and CAN bus
Connection realizes the coordinated signals of system, so as to improve the level of vehicle thermal control.
Description of the drawings
Fig. 1 is the structure diagram of electric vehicle thermal control system of the present invention；
Fig. 2 is the structure diagram of heat pump air conditioner unit of the present invention；
Fig. 3 is the principle signal when heat pump air conditioner unit in electric vehicle thermal control system of the present invention is in refrigeration mode
Figure；
Fig. 4 is that the principle when heat pump air conditioner unit in electric vehicle thermal control system of the present invention is in heating mode is illustrated
Figure；
Fig. 5 is that the principle when heat pump air conditioner unit in electric vehicle thermal control system of the present invention is in dehumidification mode is illustrated
Figure；
Fig. 6 cools down principle when heating unit is in circulation pattern for the battery in electric vehicle thermal control system of the present invention
Schematic diagram；
Fig. 7 cools down principle when heating unit is in refrigerating mode for the battery in electric vehicle thermal control system of the present invention
Schematic diagram；
Fig. 8 cools down original when heating unit is in pre-add heat pattern for the battery in electric vehicle thermal control system of the present invention
Manage schematic diagram；
Fig. 9 cools down principle when heating unit is in heating mode for the battery in electric vehicle thermal control system of the present invention
Schematic diagram.
Specific embodiment
Hereinafter, the electric vehicle thermal control system of the present invention is described in detail with reference to specific embodiment.It should know
Road, detailed description below are only used for helping skilled in the art to understand the present invention rather than limitation of the present invention.
It is shown in Figure 1, the present invention provides a kind of electric vehicle thermal control system, the system comprises：One heat pump is empty
Adjust unit (being not marked in figure) and battery cooling heating unit (being not marked in figure).The heat pump air conditioner unit passes through outside vehicle
One heat exchanger 5 and battery cooler 20 are connected with battery cooling heating unit；The heat pump air conditioner unit includes：Compressor
1st, the outer First Heat Exchanger 5 of the first two-way valve 2, interior First Heat Exchanger 3, the first expansion valve 4, vehicle, outer second heat exchanger 6 of vehicle, the
Two two-way valves 8, the second expansion valve 9, interior second heat exchanger 10, drier receiver 12 and the air being arranged in air-conditioning box assembly
Heater；Wherein, the compressor 1 is connected to the first two-way valve 2, first two-way valve 2 and the interior First Heat Exchanger
3rd, the first expansion valve 4 forms parallel connection, the outer First Heat Exchanger 5 of the vehicle respectively with 6 phase of the second heat exchanger outside the first two-way valve 2 and vehicle
Even, outer second heat exchanger 6 of the vehicle is connected to the second two-way valve 8, second two-way valve 8 and interior second heat exchanger
10th, the second expansion valve 9 forms parallel connection, the drier receiver 12 respectively with 1 phase of second two-way valve 8 and the compressor
Even；The battery cooling heating unit includes：Third expansion valve 21, battery cooler 20, third two-way valve 18, motor and motor
Controller 19, power battery 17, liquid heater 16 and water pump 15；Wherein, the third expansion valve 21 and battery cooler 20
Formed with second two-way valve 8 it is in parallel, the battery connector be connected to be formed third two-way valve 18 in parallel and motor and
Electric machine controller 19, the power battery 17 are respectively connected to third two-way valve 18 and liquid heater 16, and the water pump 15 divides
It is not connected to liquid heater 16 and the outer First Heat Exchanger 5 of vehicle.
Specifically, the heat pump air conditioner unit is additionally coupled to battery cooler 20.The battery cooling heating unit is also
It is connected to the outer First Heat Exchanger 5 of vehicle.In the present embodiment, the outer First Heat Exchanger 5 of the vehicle and the battery cooler 20 have
The Dual-fluid channel of refrigerant flow path and cooling liquid flowing channel, the outer First Heat Exchanger 5 of the vehicle and the battery cooler 20 pass through
Refrigerant flow path is connected with heat pump air conditioner unit cycle, and the outer First Heat Exchanger 5 of the vehicle and the battery cooler 20 are by cold
But liquid stream road is connected with battery cooling heating unit cycle.
In heat pump air conditioner unit, outer first heat exchanger of the vehicle can obtain motor in battery cooling heating unit and
Waste heat at electric machine controller 19 and power battery 17, so as to improve the thermodynamic cycle of system, and improves heat pump air conditioner
The performance of unit.In battery cools down heating unit, the pipeline between power battery 17 and water pump 15 is provided with liquid heater
16, the liquid heater 16 is used for when coolant temperature is relatively low, ensures motor and electric machine controller 19 and power battery 17
Normal work.
The car First Heat Exchanger 3 and interior second heat exchanger 10 are parallel flow type.The vehicle outer second changes
Hot device 6 is sheet string type or parallel flow type.In embodiment of the present invention, the outer First Heat Exchanger 5 of the vehicle is sheet string type, in this way
It can ensure the heat exchange of the progress stability and high efficiency under low temperature outer gas environment.
The outside of the second heat exchanger 6 is equipped with one first wind turbine 7 outside the vehicle, in the outer of interior second heat exchanger 10
Side is equipped with one second wind turbine 11.First wind turbine, 7 and second wind turbine 11 is strengthening outside vehicle the second heat exchanger 6 and interior the
The heat dissipation of two heat exchangers 10, to prevent excessive temperature from influencing the normal use of heat pump air conditioner unit.
The first temperature sensor is equipped at the air inlet of the second heat exchanger 6 outside the vehicle, first temperature sensor is used
To monitor the inlet air temperature of the second heat exchanger 6 outside vehicle in real time, with determine heat pump air conditioner unit operation and operating mode run when whether
It needs battery cooling heating unit switching to cycle pre-add heat pattern, to utilize motor and electric machine controller 19 and power battery
17 waste heat.
Second temperature sensor is equipped in the battery cooler 20, the second temperature sensor is used to monitor in real time
Temperature in battery cooler 20.The control to temperature is realized by switching the circulating working mode of battery cooling heating unit
System.
In the present embodiment, the third expansion valve 21 is the expansion valve with standard-sized sheet and fully closed regulatory function.It in this way, can
The operating mode of battery cooling heating unit is rapidly switched to refrigerating mode, to motor and electric machine controller 19 and power electric
Pond 17 is cooled down.
In addition, first expansion valve 4, the second expansion valve 9, third expansion valve 21, the first two-way valve 2, the second two-way valve
8th, third two-way valve 18, the first wind turbine 7, the second wind turbine 11, liquid heater 16 and air heater 14 with CAN (controllers
Local area network) bus connection, to realize coordinated signals, so as to ensure that entire electric vehicle thermal control system can efficiently, reliably
Ground is run, and the thermal control for improving vehicle is horizontal.
It, can be with by the rotation of damper positions in addition, in interior 3 one temperature damper 13 of side setting of First Heat Exchanger
Whether the wind for adjusting interior second heat exchanger flows through interior First Heat Exchanger and flows through its air volume.
In the present embodiment, the heat pump air conditioner unit is divided according to different outside air temperatures has there are three types of operating mode,
Including：Refrigeration mode, heating mode and dehumidification mode.
Shown in Figure 3, wherein the flow direction of refrigerant and coolant is as indicated by the arrows in fig. 3.
When the heat pump air conditioner unit is in refrigeration mode, after refrigerant is discharged by the compressor 1, by first liang
Port valve 2, subsequently into First Heat Exchanger outside vehicle 5, then the second heat exchanger 6 goes out to exchange heat outside the vehicle, then by described
After the throttling of second expansion valve 9, exchange heat at interior second heat exchanger 10, be recycled to finally by drier receiver 12
The compressor 1.
Shown in Figure 4, wherein the flow direction of refrigerant and coolant is as shown by the arrows in figure 4.
When the heat pump air conditioner unit is in heating mode, after refrigerant is discharged by the compressor 1, first pass through described
Interior First Heat Exchanger 3 simultaneously exchanges heat, and First Heat Exchanger 5 outside the vehicle is entered after throttling by first expansion valve 4, then
It exchanges heat at the second heat exchanger 6 outside the vehicle, is finally back to institute after the second two-way valve 8 and drier receiver 12 successively
State compressor 1.
Shown in Figure 5, wherein the flow direction of refrigerant and coolant is as illustrated by arrows 5.
When the heat pump air conditioner unit is in dehumidification mode, after refrigerant is discharged by the compressor 1, first pass through described
Interior First Heat Exchanger 3 exchanges heat, and after First Heat Exchanger 5 outside the vehicle, is changed at the second heat exchanger 6 outside the vehicle
Heat after being throttled by second expansion valve 9, exchanges heat, finally by the storage at interior second heat exchanger 10
Liquid drier 12 is recycled to the compressor 1.Meanwhile temperature damper 13 acts, by the adjusting of dampers angular, by interior the
One heat exchanger air quantity changes the effect so as to adjust dehumidifying.
And in the present embodiment, there are four types of Working moulds according to coolant temperature division tool for the battery cooling heating unit
Formula, including：Circulation pattern, refrigerating mode, pre-add heat pattern and heating mode.
Shown in Figure 6, wherein the flow direction of refrigerant and coolant is as indicated by the arrows in fig. 6.
When battery cooling heating unit is in circulation pattern, after coolant is discharged by the water pump 15, institute is flowed through
The outer First Heat Exchanger 5 of vehicle is stated, then passes through standby battery cooler 20, motor and electric machine controller 19 and power battery successively
17, finally water pump 15 is flowed back by standby liquid heater 16.This completes the cycles of battery cooling heating unit
Pattern.
Shown in Figure 7, wherein the flow direction of refrigerant and coolant is as depicted by the arrows in figure 7.
When battery cooling heating unit is in refrigerating mode, after coolant is discharged by the water pump 15, institute is flowed through
The outer First Heat Exchanger 5 of vehicle is stated, is then exchanged heat at the battery cooler 20, then pass through the motor and motor control successively
Device 19 and the power battery 17 processed are finally back to the water pump 15 by standby liquid heater 16；Simultaneously described
In heat pump air conditioner unit, after refrigerant compresses discharge by the compressor 1, first two-way valve 2 is first passed through, subsequently into institute
The outer First Heat Exchanger 5 of vehicle is stated, then is exchanged heat at the second heat exchanger 6 outside the vehicle, is throttled by the third expansion valve 21
Afterwards, it exchanges heat at the battery cooler 20, compressor 1 is recycled to finally by the drier receiver 12.Thus
Complete the refrigerating mode of battery cooling heating unit.
Shown in Figure 8, wherein the flow direction of refrigerant and coolant is as shown by the arrows in fig. 8.
When battery cooling heating unit is in pre-add heat pattern, after coolant is discharged by the water pump 15, flow through
The outer First Heat Exchanger 5 of the vehicle, then pass through standby battery cooler 20, the third two-way valve 18 and the power electric successively
Pond 17 is back to the water pump 15 after finally being exchanged heat at the liquid heater 16.This completes battery coolings
The pre-add heat pattern of heating unit.
Shown in Figure 9, wherein the flow direction of refrigerant and coolant is as shown in the arrow in Fig. 9.
When battery cooling heating unit is in heating mode, after coolant is discharged by the water pump 15, institute is flowed through
State the outer First Heat Exchanger 5 of vehicle, then successively by standby battery cooler 20, the motor and electric machine controller 19 and described dynamic
Power battery 17 is back to water pump 15 after finally being exchanged heat at the liquid heater 16.This completes battery coolings
The heating mode of heating unit.
With reference to shown in Fig. 1 to Fig. 9, furthermore, when this electric vehicle thermal control system in use, heat pump air conditioner unit
With battery cooling heating unit cooperation control, by detecting 6 inlet air temperature of the second heat exchanger and coolant temperature outside vehicle, divide
Not Que Ding two units operating mode.Wherein, when the second heat exchanger inlet temperature is relatively low, battery cooling heating unit switching
The heat that motor and electric machine controller 19 and power battery 17 generate is transferred to by operating mode by First Heat Exchanger outside vehicle 5
In the circulation loop of heat pump air conditioner unit, to improve evaporating temperature of the heat pump air conditioner unit under low outer temperature, improve entire
The thermodynamic cycle of system and exchange capability of heat and efficiency improve.
As described above, in the circulation loop of heat pump air conditioner unit, refrigerant is discharged by compressor 1, is connected to all the way
The import of first two-way valve 2, another way connect the import of interior First Heat Exchanger 3, flow through the refrigerant and stream of the first two-way valve 2
Refrigerant through interior 3 and first expansion valve 4 of First Heat Exchanger converges in the exit of the first expansion valve 4, then in turn through
The outer First Heat Exchanger 5 of vehicle, outer second heat exchanger 6 of vehicle, then the exit of the second heat exchanger 6 is divided into three tunnels outside vehicle, connects all the way
The import of the second two-way valve 8 is connect, all the way successively by the second expansion valve 9 and interior second heat exchanger 10, also all the way by the
Then three expansion valves 21 and battery cooler 20 export, the outlet of interior second heat exchanger 10 and battery from the second two-way valve 8
Three road refrigerants of the refrigerant flow path outlet outflow of cooler 20 merge in the entrance of drier receiver 12, eventually pass through storage
Liquid drier 12 cycles back to compressor 1.
In the circulation loop of battery cooling heating unit, coolant is discharged by water pump 15, flows through the outer First Heat Exchanger 5 of vehicle
Cooling liquid flowing channel, subsequently into battery cooler 20, be divided into two-way in the outlet of battery cooler 20, all the way coolant pass through
Third two-way valve 18, another way flow through motor and electric machine controller 19.Due to the outlet of third two-way valve 18 and motor and motor
The outlet of 19 cooling liquid flowing channel of controller is connected, and therefore, above-mentioned two-way coolant flows into the heat exchange at power battery 17 after converging
Device (not shown) is finally back to water pump 15 using liquid heater 16.
It needs to further illustrate, when outer temperature is less than 10 DEG C, heat pump air conditioner unit can run heating mode；When outer temperature is situated between
When 2 DEG C -25 DEG C, heat pump air conditioner unit can run dehumidification mode；When outer temperature is higher than 20 DEG C, heat pump air conditioner unit can be run
Refrigeration mode.And when detecting that coolant temperature is higher than 35 DEG C, battery cooling heating unit cycle opens water pump 15, coolant
By motor and electric machine controller 19 with being discharged at heat transfer to battery cooler 20 caused by power battery 17.Work as detection
When being less than 10 DEG C to coolant temperature, battery cooling heating unit opens liquid heater 16 and water pump 15, will be cold after heating
But liquid passes sequentially through the outer First Heat Exchanger 5 of vehicle, motor and electric machine controller 19 and power battery 17.
In addition, when power battery 17 carries out quick charge, switching working mode heats power battery 17.When
When power battery 17 carries out repid discharge, switching working mode cools down power battery 17.
Electric vehicle thermal control system of the present invention cools down the joint of heating unit by heat pump air conditioner unit and battery
Setting improves heat capacity of the heat pump air conditioner unit under low temperature outer gas environment, while can ensure that battery cools down heating unit
Working environment it is suitable, so as to improve the reliability of vehicle thermal control system and high efficiency.In addition, system needle of the present invention
Existing pump type heat automotive air-conditioning system is improved, effectively improves system heat capacity and effect under low temperature outer gas environment
Rate.In addition, system of the present invention is combined by the way that heat pump air conditioner unit and battery are cooled down heating unit, both improves and driven
The thermal comfort multiplied, and ensure the safe and efficient work of power battery 17.
The above is only the preferred embodiment of the present invention, it is noted that for the ordinary skill people of the art
Member, various improvements and modifications may be made without departing from the principle of the present invention, these improvements and modifications also should be regarded as
Protection scope of the present invention.
Claims (9)
1. a kind of electric vehicle thermal control system, which is characterized in that the system comprises：One heat pump air conditioner unit and a battery are cold
But heating unit；The heat pump air conditioner unit is single by First Heat Exchanger outside vehicle and battery cooler and battery cooling heating
Member is connected；The heat pump air conditioner unit includes：Compressor, the first two-way valve, interior First Heat Exchanger, the first expansion valve, outside vehicle
It outer second heat exchanger of First Heat Exchanger, vehicle, the second two-way valve, the second expansion valve, interior second heat exchanger, drier receiver and sets
Put the air heater in air-conditioning box assembly；Wherein, the compressor is connected to the first two-way valve, first two-way valve with
Car First Heat Exchanger, first expansion valve form parallel connection, the outer First Heat Exchanger of the vehicle respectively with the first two-way valve and vehicle
Outer second heat exchanger is connected, and outer second heat exchanger of the vehicle is connected to the second two-way valve, second two-way valve and the car
Second heat exchanger, the second expansion valve form parallel connection, the drier receiver respectively with second two-way valve and the compressor
It is connected；The battery cooling heating unit includes：Third expansion valve, battery cooler, third two-way valve, motor and motor control
Device, power battery, liquid heater and water pump；Wherein, the third expansion valve and battery cooler and second two-way valve
Parallel connection is formed, the battery connector is connected to form third two-way valve in parallel and motor and electric machine controller, the power
Battery is respectively connected to third two-way valve and liquid heater, and the water pump is respectively connected to liquid heater and vehicle outer first changes
Hot device.
2. system according to claim 1, which is characterized in that the car First Heat Exchanger and interior second heat exchange
Device is parallel flow type；Outer second heat exchanger of the vehicle is sheet string type or parallel flow type；The outer First Heat Exchanger of the vehicle and described
Battery cooler has the Dual-fluid channel of refrigerant flow path and cooling liquid flowing channel, the outer First Heat Exchanger of the vehicle and the battery
Cooler is connect by refrigerant flow path with heat pump air conditioner unit, and the outer First Heat Exchanger of the vehicle and the battery cooler pass through
Cooling liquid flowing channel is connect with battery cooling heating unit.
3. system according to claim 1, which is characterized in that the outside of the second heat exchanger is equipped with one first outside the vehicle
Wind turbine, is equipped with one second wind turbine in the outside of interior second heat exchanger, and first wind turbine and the second wind turbine are adding
The heat dissipation of strong outer second heat exchanger of vehicle and interior second heat exchanger is made with preventing excessive temperature from influencing the normal of heat pump air conditioner unit
With.
4. system according to claim 1, which is characterized in that be equipped with first at the air inlet of the second heat exchanger outside the vehicle
Temperature sensor, first temperature sensor is to monitor the inlet air temperature of the second heat exchanger outside vehicle in real time, to determine heat pump
Whether the operation of air-conditioning unit and operating mode need battery cooling heating unit switching to circulation pattern when running, to utilize motor
And the waste heat of electric machine controller and power battery.
5. system according to claim 1, which is characterized in that be equipped with second temperature in the battery cooler and sense
Device, the second temperature sensor are used to monitor the temperature in battery cooler in real time.
6. system according to claim 1, which is characterized in that the third expansion valve is with standard-sized sheet and fully closed adjusting work(
The expansion valve of energy.
7. system according to claim 1, which is characterized in that the first expansion valve, the second expansion valve, third expansion valve,
One two-way valve, the second two-way valve, third two-way valve, the first wind turbine, the second wind turbine, liquid heater and air heater with
CAN bus connects, to realize coordinated signals.
8. system according to claim 1, which is characterized in that there are three types of operating mode, packets for the heat pump air conditioner unit tool
It includes：
Refrigeration mode, heating mode and dehumidification mode；
When the heat pump air conditioner unit is in refrigeration mode, after refrigerant is discharged by the compressor, by the first two-way valve,
Subsequently into First Heat Exchanger outside vehicle, then the second heat exchanger goes out to exchange heat outside the vehicle, is then expanded by described second
After valve throttling, exchange heat at interior second heat exchanger, the compressor is recycled to finally by drier receiver；
When the heat pump air conditioner unit is in heating mode, after refrigerant is discharged by the compressor, the car is first passed through
First Heat Exchanger simultaneously exchanges heat, and enters First Heat Exchanger outside the vehicle, then described after throttling by first expansion valve
It exchanges heat at outer second heat exchanger of vehicle, is finally back to the compressor after the second two-way valve and drier receiver successively；
When the heat pump air conditioner unit is in dehumidification mode, after refrigerant is discharged by the compressor, the car is first passed through
First Heat Exchanger exchanges heat, and after First Heat Exchanger outside the vehicle, exchanges heat, passes through at the second heat exchanger outside the vehicle
After the second expansion valve throttling, exchange heat at interior second heat exchanger, followed finally by the drier receiver
Ring is to the compressor.
9. system according to claim 1, which is characterized in that there are four types of Working moulds for the battery cooling heating unit tool
Formula, including：Circulation pattern, refrigerating mode, pre-add heat pattern and heating mode；
When battery cooling heating unit is in circulation pattern, after coolant is discharged by the water pump, flow through outside the vehicle
First Heat Exchanger, then successively by standby battery cooler, motor and electric machine controller and power battery, finally by standby
Liquid heater flow back into water pump；
When battery cooling heating unit is in refrigerating mode, after coolant is discharged by the water pump, flow through outside the vehicle
Then First Heat Exchanger exchanges heat at the battery cooler, then successively by the motor and electric machine controller and institute
Power battery is stated, is finally back to the water pump by standby liquid heater；Simultaneously in the heat pump air conditioner unit, system
After cryogen is discharged by the compressor compresses, first two-way valve is first passed through, subsequently into First Heat Exchanger outside the vehicle, then
Exchange heat at the second heat exchanger outside the vehicle, by the third expansion valve throttle after, at the battery cooler into
Row heat exchange, compressor is recycled to finally by the drier receiver；
When battery cooling heating unit is in pre-add heat pattern, after coolant is discharged by the water pump, the vehicle is flowed through
Outer First Heat Exchanger, then successively by standby battery cooler, the third two-way valve and the power battery, finally in institute
It states and the water pump is back to after being exchanged heat at liquid heater；
When battery cooling heating unit is in heating mode, after coolant is discharged by the water pump, flow through outside the vehicle
First Heat Exchanger, then pass through standby battery cooler, the motor and electric machine controller and the power battery successively, finally
Water pump is back to after being exchanged heat at the liquid heater.
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| CN201711418635.3A CN108128118B (en) | 2017-12-25 | 2017-12-25 | Electric automobile thermal control system |
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|---|---|---|---|
| CN201711418635.3A CN108128118B (en) | 2017-12-25 | 2017-12-25 | Electric automobile thermal control system |
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| CN108128118B CN108128118B (en) | 2023-07-14 |
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| CN109301395A (en) * | 2018-11-21 | 2019-02-01 | 上海加冷松芝汽车空调股份有限公司 | Combined type heating, refrigerating module assembly and battery thermal management system |
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| CN109747378A (en) * | 2018-12-28 | 2019-05-14 | 大乘汽车有限公司 | Battery of electric vehicle heat management system |
| CN110588279A (en) * | 2019-08-26 | 2019-12-20 | 上海理工大学 | Whole-vehicle thermal management system with waste heat utilization function for new energy automobile |
| CN111129663A (en) * | 2019-12-17 | 2020-05-08 | 广州小鹏汽车科技有限公司 | Vehicle-mounted thermal management system and vehicle |
| CN114313297A (en) * | 2021-12-16 | 2022-04-12 | 深圳黑砂科技有限公司 | Air conditioner control method for automatic airport of unmanned aerial vehicle |
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| CN111129663B (en) * | 2019-12-17 | 2021-10-12 | 广州小鹏汽车科技有限公司 | Vehicle-mounted thermal management system and vehicle |
| CN114313297A (en) * | 2021-12-16 | 2022-04-12 | 深圳黑砂科技有限公司 | Air conditioner control method for automatic airport of unmanned aerial vehicle |
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