CN105984304A - Whole vehicle heat management system of pure electric vehicle - Google Patents
Whole vehicle heat management system of pure electric vehicle Download PDFInfo
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- CN105984304A CN105984304A CN201610283196.9A CN201610283196A CN105984304A CN 105984304 A CN105984304 A CN 105984304A CN 201610283196 A CN201610283196 A CN 201610283196A CN 105984304 A CN105984304 A CN 105984304A
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- charger
- cooling
- management system
- passenger compartment
- electric vehicle
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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
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60K—ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES
- B60K11/00—Arrangement in connection with cooling of propulsion units
- B60K11/02—Arrangement in connection with cooling of propulsion units with liquid cooling
- B60K11/04—Arrangement or mounting of radiators, radiator shutters, or radiator blinds
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60K—ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES
- B60K11/00—Arrangement in connection with cooling of propulsion units
- B60K11/06—Arrangement in connection with cooling of propulsion units with air cooling
Abstract
The invention relates to a whole vehicle heat management system of a pure electric vehicle. The whole vehicle heat management system is characterized by comprising an electric driving system and charger cooling circuit, a power battery cooling circuit, a power battery charging and heating circuit, a passenger compartment heating circuit and a passenger compartment refrigerating circuit, wherein the electric driving system and charger cooling circuit comprises a heat radiator, a fan and a kettle which are connected through a pipeline, an electric driving system and charger cooling water pump arranged in the circuit, a motor controller and DCDC (Direct Current and Direct Current), and a charger and a motor; liquid-gas heat exchange is realized by utilizing the heat radiator and is used for cooling a heat radiation part. The environment adaptability of the electric vehicle, the power performance under a high-temperature environment and the durability of key parts are improved, and the energy utilization efficiency of the whole vehicle is improved.
Description
Technical field
The present invention relates to vehicle technology field, especially a kind of thermal management system of whole pure electric vehicle.
Background technology
Pure electric automobile has the features such as energy-conserving and environment-protective, simple in construction, working service convenience, has been increasingly becoming the focus of Ge great automobile vendor research.But, owing to electrokinetic cell and other parts are influenced by environmental temperature so that the market scope that electric motor car can run is restricted.
Existing battery thermal management technical scheme, in order to ensure that the normal of battery uses temperature range, for battery cooling, uses air cooling way more, is aided with control strategy and limits discharge power, and then the temperature rise of control battery body；For battery low-temperature charging heating, use introduces hot blast mode (utilizing cooling air channel) more.Such as a kind of thermal management system of whole pure electric vehicle that patent publication No. is CN103407346A, it includes electric system cooling circuit, battery system low temperature radiation loop, battery system higher temperatures cooling circuit, battery system charging heating loop, passenger compartment heater heating loop and passenger compartment refrigerating circuit.The cooling of this mode and heating, due to the unbalanced problem of air-flow, cause the temperature difference between battery each monomer relatively big, all have an impact performance and life-span.
Content of the invention
The invention aims to solve each system of pure electric automobile, the especially problem in service life of electrokinetic cell system parts in optimum working temperature operated within range and Synchronous lifting circuit system, and existing electric automobile product lacks complete thermal management system of whole, each system lacks the scheme being combined with each other, parts utilization ratio is relatively low, function singleness, can not well promote the defect of the environmental suitability of car load, a kind of reasonable in design is provided, can line stabilization, adapt under varying environment, the thermal management system of whole pure electric vehicle of hydraulic performance decline is not caused because of Thermal protection.
The above-mentioned technical problem of the present invention is mainly addressed by following technical proposals: a kind of thermal management system of whole pure electric vehicle, it is characterized in that including power drive system and charger cooling circuit, electrokinetic cell cooling circuit, power battery charging heating circuit, passenger compartment heating loop and passenger compartment refrigerating circuit；Radiator that described power drive system and charger cooling circuit include being connected by pipeline, fan, kettle, power drive system in the loop and charger cooling water pump are set, and electric machine controller and DCDC, and charger and motor, utilize radiator to realize that thermal component is cooled down by liquid gas heat exchange.For pure electric automobile, how to ensure each system, especially electrokinetic cell system operation in the range of optimum working temperature, and Synchronous lifting respectively runs the service life of parts, to promote car load environmental suitability, being the emphasis problem of automobile research, battery thermal management demand is combined by the technical program with car load, take into account battery cooling while passenger compartment refrigeration, while passenger compartment heating, take into account battery heating.While meeting power drive system cooling requirement, battery thermal management demand, passenger compartment comfortableness, the corresponding associated components utilization rate that improves, and the durability of the parts such as motor, battery, controller.For guarantee, each key components and parts in optimum Working, being designed by effective structure and controlling, this programme heat management system can consume less electricity, it is achieved the heat management to each relevant work parts, it is ensured that more electricity is used for driving car load.
As preferably, described electrokinetic cell cooling circuit: including motor compressor and the condenser being serially connected, heat exchanger in the loop in parallel, the battery cooling/heating water pump that one end is connected with heat exchanger is connected to electrokinetic cell bag through three-way magnetic valve；Also including that cold-producing medium magnetic valve is connected by pipeline provides cold branch road；Battery coolant is lowered the temperature by the liquid-liquid heat transfer utilizing heat exchanger.
As preferably, described power battery charging heating circuit: be made up of to electrokinetic cell bag to three-way magnetic valve battery cooling/heating water pump, and by heater, electrokinetic cell bag heated.
As preferably, described passenger compartment heating loop: include kettle, the heating water pump being connected with kettle, heating water pump is connected to heater cores by heater through three-way magnetic valve, peripheral hardware air blast, utilizes the thermal source of heater and the liquid-gas exchange of heater cores to heat up passenger compartment.
As preferably, described passenger compartment refrigerating circuit: include motor compressor and the condenser being serially connected, condenser, through cold-producing medium magnetic valve to evaporation core body, peripheral hardware air blast, utilizes the liquid-gas heat exchange of evaporation core body to lower the temperature passenger compartment.
As preferably, described power drive system and charger cooling circuit include that power drive system cools down, its water inlet order for radiator outlet through electric machine controller and DCDC to charger, arrive motor again, the higher temperature coolant that motor flows out is returned radiator and is lowered the temperature by air heat exchange, passing through each thermal component through the coolant of cooling, now charger does not works.
As preferably, described power drive system and charger cooling circuit include charger cooling circuit, its water inlet order is radiator outlet electric machine controller and DCDC charger motor, the coolant that charger flows out is lowered the temperature with air heat exchange by radiator, coolant through cooling passes through thermal component, and this operating mode power drive system does not works.
As preferably, described power drive system and charger cooling circuit pass through acquisition component and fluid path temperature signal, it is judged that the corresponding radiating requirements of charger.
As preferably, described power drive system and charger cooling circuit are according to different temperature limit points, regulation pump capacity, fan gear and rotating speed cooling-part duty.
The invention have effective effect that:
1. promote electric motor car environmental adaptability: this programme devises effective cooling and heating system, to meet each parts High-temperature cooling and low-temperature heat demand, makes car load run in the range of environment temperature-30-45 DEG C.
2. promote the power performance under electric motor car hot environment: the technical program provides effective cooling system, electrokinetic cell work under hot environment can be met and be in optimum temperature range, thus ensure that normal power exports.
3. promote electric motor car key components and parts durability: this case provides effective cooling and heating system, can effectively meet the key components and parts such as motor, battery and be operated within the scope of suitable temperature, extend its service life.
4. promote car load energy utilization efficiency: this programme is designed by effective control device and mechanism, to consume less electrical energy, it is achieved the heat management to each parts or system, it is ensured that energy is more used for driving traveling.
Brief description
Fig. 1 is a kind of system architecture schematic diagram of the present invention.
Fig. 2 is a kind of power drive system cooling work loop structure schematic diagram of the present invention.
Fig. 3 is a kind of charger cooling work loop structure schematic diagram of the present invention.
Fig. 4 is a kind of electrokinetic cell cooling work loop structure schematic diagram of the present invention.
Fig. 5 is a kind of power battery charging heating work loop structure schematic diagram of the present invention.
Fig. 6 is a kind of passenger compartment heating performance loop structural representation of the present invention.
Fig. 7 is a kind of passenger compartment refrigeration work loop structure schematic diagram of the present invention.
In figure: 1. radiator；2. fan；3. kettle；4. power drive system and charger cooling water pump；5. electric machine controller and DCDC；6. charger；7. motor；8. heat exchanger；9. battery cooling/heating water pump；10. three-way magnetic valve；11. electrokinetic cell bags；12. heating water pumps；13. heaters；14. heater cores；15. kettles；16. motor compressors；17. condensers；18. cold-producing medium magnetic valves；19. evaporation core bodies；20. air blasts.
Detailed description of the invention
Below by embodiment, and combine accompanying drawing, technical scheme is described in further detail.
A kind of thermal management system of whole pure electric vehicle of the present embodiment, as it is shown in figure 1, each main member effect is as follows: radiator 1: by liquid-gas heat exchange, lower the temperature power drive system and charger loop coolant；Heat exchanger 8: the cooler of compact, by liquid-liquid heat exchange by low for battery coolant temperature drop, is used for cooling down battery；Three-way magnetic valve 10: by control controlling flow direction, it is achieved different functions and mode of operation；Heater 13: by high voltage supply, is heating and battery heats offer thermal source；Heater cores 14: by liquid-gas heat transfer, crew module is heated up；Motor compressor 16: pass through high voltage supply, it is achieved crew module's refrigeration and battery cooling circuit are properly functioning；Condenser 17: by liquid-gas heat exchange, air conditioner refrigerating circuit refrigerant is lowered the temperature；Cold-producing medium magnetic valve 18: when battery needs cooling, when crew module is without refrigeration demand, be used for closing passenger compartment refrigerant circulation, it is to avoid produce frosting because mistake cold media flows continuously through evaporation core body 19；All kinds of water pumps: by low-voltage power supply, drive corresponding circuit media flow；Evaporation core body 19: by liquid-gas heat transfer, crew module is lowered the temperature.
First, native system includes power drive system and charger cooling circuit, electrokinetic cell cooling circuit, power battery charging heating circuit, passenger compartment heating loop and passenger compartment refrigerating circuit.
Power drive system and charger heat management implementation: be formed by connecting by pipeline by radiator the 1st, fan the 2nd, kettle the 3rd, 4 power drive systems and charger cooling water pump, electric machine controller and DCDC5, charger the 6th, motor 7, utilize radiator to realize that thermal component is cooled down by liquid gas heat exchange.
Wherein one, power drive system cools down: performance loop as in figure 2 it is shown, in figure obvious lines constitute, lower together.Car load in the process of moving, if power drive system has cooling requirement, by acquisition component and fluid path temperature signal, it is judged that motor and the corresponding cooling requirements of electric machine controller；According to cooling-part duties such as different temperature points, regulation pump capacity, fan gear and rotating speeds, ensure that motor and electric machine controller are operated within the scope of suitable temperature with this.The water inlet order of thermal component is: radiator 1 water outlet-electric machine controller and DCDC5-charger 6-motor 7, the higher temperature coolant that motor 7 flows out is by the heat exchange cooling of radiator 1 and air, coolant through cooling passes through thermal component, reach to cool down purpose, this loop and charger 6 cool down common return, but under this work condition state, charger 6 does not works.
By demarcating and verifying, charger cooling water pump, fan 2 can realize accurately by demand working state control, while ensureing to be adjusted power drive system coolant temperature, effectively reduce the energy ezpenditure of heat management system, improve the endurance quality of power drive system and the power performance of car load simultaneously.
Wherein two, charger cooling circuit, see Fig. 3, in car load charging process, charger 6 has cooling requirement, by acquisition component and fluid path temperature signal, it is judged that the corresponding radiating requirements of charger 6.According to cooling-part duties such as different temperature limit points, regulation charger cooling water pump flow, fan 2 gear and rotating speeds, ensure charger operation within the scope of suitable temperature with this.The water inlet order of thermal component is: radiator 1 water outlet-electric machine controller and DCDC5-charger 6--motor 7, the coolant that charger 6 flows out is by the heat exchange cooling of radiator 1 and air, coolant through cooling passes through thermal component, reaches the purpose of cooling.This loop shares with power drive system cooling circuit, but under this work condition state, power drive system does not works.
2nd, the electrokinetic cell heat management i.e. realization of electrokinetic cell cooling circuit: see Fig. 4, linked electrokinetic cell cooling circuit by pipeline by heat exchanger the 8th, battery cooling/heating water pump the 9th, three-way magnetic valve the 10th, electrokinetic cell bag 11, motor compressor the 16th, condenser the 17th, cold-producing medium magnetic valve 18 is connected to become, by pipeline, the refrigerating circuit that electrokinetic cell cooling provides cold.Battery coolant is lowered the temperature by the liquid-liquid heat transfer utilizing heat exchanger 8, and then cooling battery.
Specifically, car load travels or in charging process, if electrokinetic cell has cooling requirement, in order to ensure that electrokinetic cell is operated within the scope of suitable temperature, heat exchanger 8 has the water channel of two overlapped arrangements, flows through electrokinetic cell bag 11 coolant on a wherein road, in heat exchanger 8, carry out heat transfer with the air conditioner refrigerating medium flowing through an other road, thus electrokinetic cell bag 11 coolant is lowered the temperature, then flow to electrokinetic cell it is cooled down.This loop and electrokinetic cell cooling circuit share motor compressor 16.
Three-way magnetic valve 10 be provided with as shown in the drawings under a 1. 2. left side, the right side 3. three interfaces, wherein 2. mouth is normally opened end, and 3. mouth is normal-closed end, and under electrokinetic cell cooling operating mode, the work of three-way magnetic valve 10 no power can realize the control flowing to water route.By gathering inside battery and inflow temperature signal, it is judged that the corresponding radiating requirements of battery.According to different temperature points, regulating cell cooling/heating water pump the 9th, heat exchanger the 8th, the component working state such as three-way magnetic valve 10 and motor compressor 16, it is achieved the cooling of electrokinetic cell.By demarcating and verifying, accurate on-demand working state control is carried out to battery cooling/heating water pump the 9th, heat exchanger the 8th, three-way magnetic valve 10 and motor compressor 16, while ensureing to be adjusted battery operating temperature, effectively reduce the energy ezpenditure of heat management system, the service life of Synchronous lifting electrokinetic cell and the power performance of car load.
When crew module has cooling requirement without refrigeration demand, electrokinetic cell, in order to prevent evaporation core body frosting, cold-producing medium magnetic valve is set in evaporation core body 19 front end, in order to close the refrigerant circulation in passenger compartment.
3rd, the charging heating of electrokinetic cell heat management realizes: i.e. power battery charging heating circuit, see Fig. 5, it is formed by connecting by pipeline by battery cooling/heating water pump the 9th, three-way magnetic valve the 10th, electrokinetic cell bag the 11st, heater 13, utilize heater 13 to heat electrokinetic cell bag 11.
Specifically, in car load low temperature charging process, cannot charge if temperature of powered cell is relatively low, in order to ensure that electrokinetic cell reaches to allow the temperature range of charging, utilize high-pressure heater that electrokinetic cell coolant is heated to target temperature, water pump drives the liquid heating up to flow to electrokinetic cell, heats it.Cooling down common return with above-mentioned electrokinetic cell, under this work condition state, heat exchanger 8 does not works.
Three-way magnetic valve 2. mouth is normally opened end, and 3. mouth is normal-closed end, and under low temperature charging operating mode, three-way magnetic valve, without being energized work, can realize the control that water route is flowed to by battery heating cycle.
By gathering inside battery and inflow temperature signal, it is judged that the corresponding demand for heat of battery.According to different temperature points, regulating cell cooling/heating water pump the 9th, the component working state such as heater 13 and three-way magnetic valve 10, it is achieved the low-temperature charging heating of electrokinetic cell.
By demarcating and verifying, accurate on-demand working state control is carried out to water pump, heater and three-way magnetic valve 10, while ensureing to be adjusted electrokinetic cell low temperature charging temperature, effectively reduce the energy ezpenditure of heat management system under low temperature charging operating mode, the service life of Synchronous lifting electrokinetic cell and shortening charging interval.
4th, the realization of passenger compartment heating: passenger compartment heating loop as shown in Figure 6, it is formed by connecting by pipeline by three-way magnetic valve the 10th, heating water pump the 12nd, heater the 13rd, heater cores the 14th, kettle the 15th, air blast 20, utilize the thermal source of heater 13 and the liquid-gas exchange of heater cores 14, passenger compartment is heated up.
Car load travels or in charging process, if passenger compartment has heating demand, utilizes high-pressure heater 13 that heating loop liquid is heated to target temperature, and water pump drives the liquid heating up to flow to heater cores 14, and air blast 20 is dried and heated passenger compartment.Compared with former uniform-charge Otto-engine heating, native system uses high-tension electricity heating system.
Three-way magnetic valve 2. mouth is normally opened end, and 3. mouth is normal-closed end, and under passenger compartment heating operating mode, three-way magnetic valve 10 need to be energized work, i.e. close 2. interface, open 3. interface, it is achieved the control that water route is flowed to by passenger compartment heating operating mode.
By gathering passenger compartment relevant temperature and inflow temperature signal, it is judged that passenger compartment corresponding heating demand.According to different temperature points, regulate heating water pump the 12nd, the component working state such as heater 13 and three-way magnetic valve 10, it is achieved passenger compartment heating.
By demarcating and verifying, carry out accurate on-demand working state control to water pump, heater and three-way magnetic valve, it is ensured that while passenger compartment heating demand, effectively promote heater energy transformation efficiency, the car load continual mileage of Synchronous lifting low temperature driving cycle.
5th, the realization of passenger compartment refrigeration: passenger compartment refrigerating circuit i.e. as shown in Figure 7, it is formed by connecting by pipeline by motor compressor the 16th, condenser the 17th, cold-producing medium magnetic valve the 18th, evaporation core body the 19th, air blast 20, utilize the liquid-gas heat exchange of evaporation core body 19, passenger compartment is lowered the temperature.
Car load travels or in charging process, if passenger compartment has refrigeration demand, in order to meet the comfort property of passenger compartment, flow through evaporation core body 19 by the driving of motor compressor 16 with compression, the cooling effect of condenser 17, the low-pressure low-temperature cold-producing medium after expanding, evaporation core body 19 is dried by air blast 20, it is achieved passenger compartment freezes.Compared with the mechanical compressor that uniform-charge Otto-engine uses, native system have employed motor compressor, is additionally arranged cold-producing medium magnetic valve in air-conditioning duct, can need to close passenger compartment refrigerating circuit by duty.
By demarcating and verifying, cooling in conjunction with electrokinetic cell, accurate on-demand working state control is carried out to motor compressor the 16th, heat exchanger 8 and cold-producing medium magnetic valve 18, while ensureing passenger compartment refrigeration demand, effectively promote the energy utilization efficiency of motor compressor, the car load continual mileage of Synchronous lifting passenger compartment cooling condition.
Above-described embodiment is the description of the invention, is not limitation of the invention, and structure, technique after any simple transformation to the present invention belong to protection scope of the present invention.
Claims (9)
1. a thermal management system of whole pure electric vehicle, is characterized in that including power drive system and charger cooling circuit, electrokinetic cell cooling circuit, power battery charging heating circuit, passenger compartment heating loop and passenger compartment refrigerating circuit；Radiator (1) that described power drive system and charger cooling circuit include being connected by pipeline, fan (2), kettle (3), power drive system in the loop and charger cooling water pump (4) are set, and electric machine controller and DCDC(5), and charger (6) and motor (7), utilize radiator to realize that thermal component is cooled down by liquid gas heat exchange.
2. a kind of thermal management system of whole pure electric vehicle according to claim 1, it is characterized in that described electrokinetic cell cooling circuit: include motor compressor (16) and the condenser (17) being serially connected, heat exchanger (8) in the loop in parallel, battery cooling/heating water pump (9) that one end is connected with heat exchanger is connected to electrokinetic cell bag (11) through three-way magnetic valve (10)；Also including that cold-producing medium magnetic valve (18) is connected by pipeline provides cold branch road；Battery coolant is lowered the temperature by the liquid-liquid heat transfer utilizing heat exchanger.
3. a kind of thermal management system of whole pure electric vehicle according to claim 1 and 2, it is characterized in that described power battery charging heating circuit: be made up of to electrokinetic cell bag (11) to three-way magnetic valve (10) battery cooling/heating water pump (9), and heated electrokinetic cell bag by heater (13).
4. a kind of thermal management system of whole pure electric vehicle according to claim 3, it is characterized in that described passenger compartment heating loop: include kettle (15), the heating water pump (12) being connected with kettle, heating water pump is connected to heater cores (14) by heater (13) through three-way magnetic valve (10), peripheral hardware air blast (20), utilizes the thermal source of heater and the liquid-gas exchange of heater cores to heat up passenger compartment.
5. a kind of thermal management system of whole pure electric vehicle according to claim 1 and 2, it is characterized in that described passenger compartment refrigerating circuit: include motor compressor (16) and the condenser (17) being serially connected, condenser arrives evaporation core body (19) through cold-producing medium magnetic valve (18), peripheral hardware air blast (20), utilizes the liquid-gas heat exchange of evaporation core body to lower the temperature passenger compartment.
6. a kind of thermal management system of whole pure electric vehicle according to claim 1, it is characterized in that described power drive system and charger cooling circuit include that power drive system cools down, its water inlet order is that radiator (1) water outlet is through electric machine controller and DCDC(5) arrive charger (6), arrive motor (7) again, the higher temperature coolant that motor flows out is returned radiator and is lowered the temperature by air heat exchange, passing through each thermal component through the coolant of cooling, now charger does not works.
7. a kind of thermal management system of whole pure electric vehicle according to claim 1 or 6, it is characterized in that described power drive system and charger cooling circuit include charger cooling circuit, its water inlet order is radiator (1) water outlet electric machine controller and DCDC(5) charger (6) motor (7), the coolant that charger flows out is lowered the temperature with air heat exchange by radiator, coolant through cooling passes through thermal component, and this operating mode power drive system does not works.
8. a kind of thermal management system of whole pure electric vehicle according to claim 7, it is characterised in that described power drive system and charger cooling circuit pass through acquisition component and fluid path temperature signal, it is judged that the corresponding radiating requirements of charger.
9. a kind of thermal management system of whole pure electric vehicle according to claim 7, it is characterised in that described power drive system and charger cooling circuit are according to different temperature limit points, regulation pump capacity, fan gear and rotating speed cooling-part duty.
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