CN105546873A - Blade electric vehicle battery constant temperature and air conditioner system and control method thereof - Google Patents

Blade electric vehicle battery constant temperature and air conditioner system and control method thereof Download PDF

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Publication number
CN105546873A
CN105546873A CN201610064042.0A CN201610064042A CN105546873A CN 105546873 A CN105546873 A CN 105546873A CN 201610064042 A CN201610064042 A CN 201610064042A CN 105546873 A CN105546873 A CN 105546873A
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CN
China
Prior art keywords
car
compressor
temperature
heat exchanger
air
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Granted
Application number
CN201610064042.0A
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Chinese (zh)
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CN105546873B (en
Inventor
黄伟
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Tongcheng Construction Investment Development Co ltd
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SUZHOU SAIER-COOLING AIR-CONDITIONING Co Ltd
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Publication of CN105546873A publication Critical patent/CN105546873A/en
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Classifications

    • 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
    • F25B29/00—Combined heating and refrigeration systems, e.g. operating alternately or simultaneously
    • F25B29/003—Combined heating and refrigeration systems, e.g. operating alternately or simultaneously of the compression type system
    • 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
    • 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
    • F25B49/00—Arrangement or mounting of control or safety devices
    • F25B49/02—Arrangement or mounting of control or safety devices for compression type machines, plants or systems
    • 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
    • F25B2600/00—Control issues
    • F25B2600/02—Compressor control
    • F25B2600/021—Inverters therefor

Abstract

The invention discloses a blade electric vehicle battery constant temperature and air conditioner system and a control method. The system comprises a four-way valve, a vehicle outer heat exchanger, a first both-way expansion valve, a vehicle inner heat exchanger, a gas-liquid separator, a water tank, a battery box, a refrigerating coil, a water pump and a temperature adjusting coil. The water pump is connected to a water outlet of the water tank and the temperature adjusting coil. The other end of the temperature adjusting coil is connected to a water returning port of the water tank. The refrigerating coil is arranged in the water tank. An exhaust port of the compressor communicates with an air inlet of the four-way valve, and the four-way valve is used for connecting an air inlet and an air suction port of the compressor, the vehicle outer heat exchanger and the vehicle inner heat exchanger. The refrigerating coil is also connected to a refrigerant circulating system, the running route of refrigerant is regulated through four control valves, and accordingly pure battery temperature adjusting, pure air conditioner running and synchronous battery and air conditioner running are achieved. According to the battery constant temperature and air conditioner system, the temperature of a batter pack in a battery case can be regulated, the battery can run in the ideal temperature environment, and the requirements for blade electric vehicle refrigerating and heating are met.

Description

A kind of pure electric automobile battery constant temperature and air-conditioning system and control method thereof
Technical field
The present invention relates to a kind of pure electric automobile battery constant temperature and air-conditioning system, have also been devised the battery constant temperature of this pure electric automobile and the control method of air-conditioning system simultaneously.
Background technology
Pure electric automobile is more and more universal in recent years, the driving of vehicle is all completed by main drive motor, main drive motor is then by battery-powered, the electric energy needing consuming cells group when reality uses as the electric air-conditioning system being applied to pure electric automobile, therefore, the electric air-conditioning system of pure electric automobile can affect the course continuation mileage of automobile.The electric air-conditioning system of pure electric automobile so how is made to use more energy-conservation, the difficult problem on the utilization rate of energy and the higher electric air-conditioning system being current pure electric automobile of conversion ratio.Whether the control method of electric air-conditioning system whether rationally directly to affect air-conditioning system energy-conservation in addition, therefore, provides a kind of control method of electric air-conditioning system also particularly important.
In addition, the power brick of pure electric vehicle is electric automobile kernel component, but makes can not completely directly be adapted to temperature environment used in everyday due to its congenital chemical characteristic.Power brick performance is fairly obvious by such environmental effects, especially under cryogenic battery performance declines fairly obvious, and although serviceability can be improved under the high temperature conditions, if exceed certain temperature, the dilatancy of battery can be caused and cause potential safety hazard.Therefore, there is no the prerequisite of breakthrough in essence in current battery performance under, if improve the serviceability of battery, make that battery operated under optimum temperature, give full play to its effect be the key and the effective measures that improve automobile power cell performance.
Summary of the invention
A technical problem to be solved by this invention is: provide a kind of pure electric automobile battery constant temperature and air-conditioning system, this battery constant temperature and air-conditioning system not only can regulate and control the temperature of the power brick in battery case, battery is run in a desirable temperature environment, and the refrigeration of pure electric vehicle can be met and heat requirement.
Another technical problem to be solved by this invention is: the control method providing a kind of pure electric automobile battery constant temperature and air-conditioning system, the control method of this battery constant temperature and air-conditioning system not only can the temperature of power brick in intelligent control battery case, battery is run in a desirable temperature environment, and the refrigeration of pure electric vehicle can be met and heat requirement, make the operation of electric automobile air conditioner more reasonable.
For solving above-mentioned first technical problem, technical scheme of the present invention is: a kind of pure electric automobile battery constant temperature and air-conditioning system, comprise compressor, cross valve, car external heat exchanger, first Bidirectional expansion valve, heat exchanger in car, gas-liquid separator, described car external heat exchanger and Che Nei heat exchanger are supporting respectively the outer blower fan of car and car inner blower, also comprise water tank, battery case, refrigeration coil, water pump and tempering coil, described refrigeration coil is arranged in water tank, described tempering coil is arranged in battery case, described water pump is connected to the delivery port of water tank and one end of tempering coil, the other end of described tempering coil is connected to the water return outlet of water tank, described refrigeration coil is arranged in water tank, described cross valve is provided with air inlet, gas returning port, refrigeration stream is to mouth and heat flow direction mouth, the exhaust outlet of described compressor is communicated with the air inlet of cross valve, the gas returning port of described cross valve is connected with the air entry of compressor by return line, described gas-liquid separator is arranged in return line, the gas link of described car external heat exchanger connects the refrigeration stream of cross valve to mouth, the liquid link of car external heat exchanger is connected to one end of the first Bidirectional expansion valve by the first air-conditioning duct, the other end of the first Bidirectional expansion valve is connected to the liquid link of heat exchanger in car, what in described car, the gas link of heat exchanger was connected to cross valve by the second air-conditioning duct heats flow direction mouth, one end of described refrigeration coil is connected to the liquid link of car external heat exchanger by the first battery Constant-temp. pipeline, the other end of described refrigeration coil heats flow direction mouth by what be connected to cross valve by the second battery Constant-temp. pipeline, the other end of described refrigeration coil is connected between the liquid link of heat exchanger in the other end of the first Bidirectional expansion valve and car by the 3rd battery Constant-temp. pipeline, described first air-conditioning duct is provided with the first control valve, described second air-conditioning duct is provided with the second control valve, described first battery Constant-temp. pipeline is provided with the second Bidirectional expansion valve, described second battery Constant-temp. pipeline is provided with the 3rd control valve, described 3rd battery Constant-temp. pipeline is provided with the 4th control valve.
As the preferred scheme of one, the gas link of described car external heat exchanger and Che Nei heat exchanger is provided with gas distributor, the gas distributor of car external heat exchanger is connected to mouth with the refrigeration stream of cross valve, in car, the heating of gas distributor and cross valve of heat exchanger flows to mouth and is connected, the liquid link of described car external heat exchanger and Che Nei heat exchanger is provided with liquid distributor, the liquid distributor of this car external heat exchanger is connected with one end of a port of the first Bidirectional expansion valve and the first battery Constant-temp. pipeline, another port of first Bidirectional expansion valve is connected with the liquid distributor of heat exchanger in car.
As the preferred scheme of one, be also provided with the first auxiliary electric heater unit in described water tank, in described car, the distinguished and admirable downstream of heat exchanger is provided with the second auxiliary electric heater unit.
As the preferred scheme of one, described liquid distributor comprises the dispensed chambers of a taper, this dispensed chambers is provided with a total interface of liquid and several distributing pipes, in these several distributing pipes or car interior with car external heat exchanger, the heat exchange of heat exchanger is in charge of one_to_one corresponding and is communicated with.
After have employed technique scheme, effect of the present invention is: this battery constant temperature and air-conditioning system carry out intelligent thermoregulating according to power brick temperature, the heat of refrigerant is utilized to freeze to the water in water tank or heat, recycling water circulation, to power brick temperature adjustment, avoids battery in adverse circumstances or in contingency catch fire and cause security incident.And the refrigerant of compressor also replaceable different running route, meet in car the requirement freezed or heat.
Again owing to being also provided with the first auxiliary electric heater unit in described water tank, in described car, the distinguished and admirable downstream of heat exchanger is provided with the second auxiliary electric heater unit, utilize the first auxiliary electric heater unit and the second auxiliary electric heater unit can carry out auxiliary heating to the water in water tank and Che Nei heat exchanger respectively, guarantee normally running of heat-production functions.
For solving above-mentioned second technical problem, technical scheme of the present invention is: the control method of a kind of pure electric automobile battery constant temperature and air-conditioning system, and it comprises with under type:
A, pure air conditioning mode
A1, air-conditioning heating pattern
A11, air-conditioning heating pattern start:
If and only if, and car external environment temperature is less than T outer maxtime heating mode start, after startup, cross valve switches to heating mode, the air inlet of cross valve is made to flow to mouth and be communicated with heating, refrigeration stream is communicated with to mouth with gas returning port, first control valve and the second control valve are opened, 3rd control valve and the 4th control valve are closed, compressor start, refrigerant becomes the gaseous coolant of HTHP after compressor compresses, gaseous coolant is by evenly entering into heat exchanger heat exchange in car after cross valve, low temperature liquid refrigerant is become again by the first Bidirectional expansion valve step-down, low temperature liquid refrigerant becomes the gas-liquid mixture of low temperature after evenly entering into the heat exchange of car external heat exchanger, eventually pass refrigeration stream and flow back into gas-liquid separator to mouth and gas returning port, the gaseous coolant of low temperature is back to compressor through the air entry of compressor and enters next circulation, compressor is according to design temperature T in car inside establish, real time temperature T in car interior realityreal time temperature T outer with car outer realitycarry out intelligent frequency-conversion, when the core body temperature of heat exchanger in car is lower than T interior mintime car inner blower stop operating, when the core body temperature of heat exchanger in car is higher than T interior maxtime car inner blower rotate, when in car, the core body temperature of heat exchanger is in T with the rotating speed gear of setting interior minto T interior maxbetween time car inner blower rotate with minimum speed gear,
A12, air-conditioning heating pattern are closed:
Close heating mode and powered-down time, first close compressor, then late release car inner blower, finally switches refrigeration mode by cross valve, and air inlet is communicated with to mouth with refrigeration stream, heats to flow to mouth and be communicated with gas returning port; And close heating mode air-conditioning system when being in standby, first close compressor, and car inner blower middling speed gear rotates again with the continuous running of minimum speed gear after certain hour, and cross valve switches refrigeration mode, after closing heating mode, and setting A=T inside establish-T interior reality, when A is greater than setting value N, heating mode just starts again;
A2, air conditioner refrigerating pattern
A21, air conditioner refrigerating pattern start:
If and only if, and car external environment temperature is more than or equal to T outer mintime refrigeration mode start, after startup, cross valve switches to refrigeration mode, and air inlet is communicated with to mouth with refrigeration stream, heats to flow to mouth and be communicated with gas returning port, first control valve and the second control valve are opened, 3rd control valve and the 4th control valve are closed, compressor is restarted after the outer fan starting of car, refrigerant becomes the gaseous coolant of HTHP after compressor compresses, gaseous coolant is by evenly entering heat exchange in car external heat exchanger after cross valve, low temperature liquid refrigerant is become again by the first Bidirectional expansion valve step-down, the gas-liquid mixture of low temperature is become after the even exchanger heat into the car of low temperature liquid refrigerant exchanges, eventually pass to heat and flow to mouth and gas returning port flows back into gas-liquid separator, the gaseous coolant of low temperature is back to compressor through the air entry of compressor and enters next circulation, compressor is according to design temperature in car, in car, real time temperature carries out intelligent frequency-conversion,
A22, air conditioner refrigerating pattern are closed:
When closing refrigeration mode, first close compressor then closes the outer blower fan of car, setting A1=T interior reality-T inside establish, when A is greater than setting value N1, refrigeration mode just starts again;
B, pure battery thermostatic control pattern
B1, battery refrigeration mode
When power brick temperature is more than T battery max, water temperature T in water tank water temperaturebe greater than T water temperature mintime, battery refrigeration mode starts, and cross valve switches to refrigeration mode, and air inlet is communicated with to mouth with refrigeration stream, heats and flows to mouth and be communicated with gas returning port, 3rd control valve is opened, first control valve, second control valve the 4th control valve is closed, compressor is restarted after the outer fan starting of car, refrigerant becomes the gaseous coolant of HTHP after compressor compresses, gaseous coolant is by evenly entering heat exchange in car external heat exchanger after cross valve, low temperature liquid refrigerant is become again by the second Bidirectional expansion valve step-down, low temperature liquid refrigerant enters into refrigeration coil and freezes to the water in water tank, starting mode of pump is to the power brick cooling in battery case, refrigerant becomes the gas-liquid mixture of low temperature after heat exchange, eventually pass to heat and flow to mouth and gas returning port flows back into gas-liquid separator, the gaseous coolant of low temperature is back to compressor through the air entry of compressor and enters next circulation, compressor and the outer blower fan of car carry out intelligent frequency-conversion according to the temperature in water tank, when water temperature T in water tank water temperaturebe less than T water temperature mintime battery refrigeration mode stop,
B2, battery heating mode
When power brick temperature is lower than T battery min, water temperature is less than or equal to T water temperature maxtime, battery heating mode starts, and cross valve switches to heating mode, and make air inlet flow to mouth and be communicated with heating, refrigeration stream is communicated with to mouth with gas returning port, 3rd control valve is opened, first control valve, second control valve the 4th control valve is closed, compressor start, refrigerant becomes the gaseous coolant of HTHP after compressor compresses, gaseous coolant is by entering into refrigeration coil heat exchange after cross valve, starting mode of pump heats up to the power brick in battery case, make gaseous coolant become temperature to reduce, low temperature liquid refrigerant is become again by the second Bidirectional expansion valve step-down, low temperature liquid refrigerant becomes the gas-liquid mixture of low temperature after evenly entering into the heat exchange of car external heat exchanger, eventually pass refrigeration stream and flow back into gas-liquid separator to mouth and gas returning port, the gaseous coolant of low temperature is back to compressor through the air entry of compressor and enters next circulation, compressor and the outer blower fan of car carry out intelligent frequency-conversion according to the temperature in water tank, when water temperature T in water tank water temperaturebe greater than T water temperature maxtime battery refrigeration mode stop,
C, air-conditioning and battery constant temperature mixed mode
C1 air-conditioning and battery refrigeration mode simultaneously
When to meet the condition in A2 and B1 simultaneously, start air-conditioning and battery refrigeration, first control valve, the second control valve and the 3rd control valve are opened, 4th control valve is closed, cross valve is refrigeration mode, compressor start makes refrigerant enter into heat exchanger and refrigeration coil heat exchange in car respectively through the first Bidirectional expansion valve and the second Bidirectional expansion valve, and water pump and car inner blower start and freeze to power brick and Che Nei, compressor and the outer blower fan of car according to T water temperature, T interior reality, T inside establishcarry out intelligent frequency modulation; When arbitrary pattern meets stop condition, another pattern is all run according to independent operational mode;
C2 air-conditioning and battery heating mode simultaneously
When to meet the condition in A1 and B2 simultaneously, startup air-conditioning and battery heat, first control valve and the 3rd control valve are closed, second control valve and the 4th control valve are opened, cross valve is heating mode, compressor start, refrigerant first after heat exchanger heat exchange in car again through the water of refrigeration coil heating water tank, then become cryogenic liquid by the second Bidirectional expansion valve, then flow in compressor from the refluxing opening of cross valve after car external heat exchanger heat exchange heat absorption; The outer blower fan of compressor and car according to T water temperature, T interior reality, T inside establishcarry out intelligent frequency modulation; When arbitrary pattern meets stop condition, another pattern is all run according to independent operational mode.
Preferably, auxiliary electrical heater in the also supporting car of heat exchanger in the car in described air conditioning control method; Water tank auxiliary electrical heater is provided with in water tank;
Just auxiliary electrical heater in car is started: 1) compressor operating time was more than 2 minutes when meeting the following conditions simultaneously; 2) the positive continuous service of car inner blower; 3) distance auxiliary electrical heater shut-in time last time is more than 1 minute; 4) in car, the core body temperature of heat exchanger is less than preset value T electricity opens; 5) vehicle interior temperature is less than preset value T interior default; 6.A value is greater than setting value N2, and this N2 is greater than N;
When meeting the following conditions for the moment, in car, auxiliary electrical heater is closed: 1, in car, the core body temperature of heat exchanger is more than or equal to preset value T electricity opens; 2, A value is less than or equal to setting value N2-1; 3, vehicle interior temperature is greater than preset value T interior default+ 1; 4, when heating mode and refrigeration mode switch;
When power brick temperature is lower than T battery min, water temperature is less than or equal to T water temperature maxtime, and run more than 5 minutes under battery heating mode, water tank auxiliary electrical heater starts, when water temperature is more than or equal to T water temperature maxwhen+5, water tank auxiliary electrical heater stops, and systematic evaluation becomes the heating mode of pure air-conditioning.
Preferably, described air conditioning control method is all also provided with defrosting mode under air-conditioning heating pattern, battery heating mode or air-conditioning battery simultaneously heating mode:
The outer real time temperature of setting car is T outer reality, car external heat exchanger core body temperature T outer core, work as T outer reality-T outward coreduring>=setting value N3, and the heating mode of correspondence started defrosting mode more than 30 minutes lower running time, when defrosting starts, the outer blower fan of compressor, car inner blower and car all stops, cross valve switches to refrigeration mode, first control valve and the second control valve are opened, 3rd control valve and the 4th control valve are closed, then compressor start gradually become oepration at full load, car inner blower and the outer blower fan of car still stop, refrigerant runs according to the pure air conditioner refrigerating pattern route of electric air-conditioning, makes the gaseous coolant of HTHP in car external heat exchanger by defrosting; Work as T outer corecontinue for some time more than T outer core minor defrosting mode continuous service stops defrosting when exceeding minimum defrosting time.
Preferably, under air-conditioning heating pattern compressor according to design temperature T in car inside establish, real time temperature T in car interior realityreal time temperature T outer with car outer realitythe concrete mode of carrying out intelligent frequency-conversion is; Compressor rotary speed is set with fourth gear, again slow to be followed successively by soon first grade, second gear, third gear and fourth speed, compressor is according to T outer realityshi great little carrys out the maximum speed of limit compression machine;
1, T is worked as outer realityduring < 9 DEG C, the maximum speed shelves of compressor are third gear;
2, as 10 DEG C of < T outer realityduring < 12 DEG C, the maximum speed shelves of compressor are third gear;
3, as 13 DEG C of < T outer reality< T outer maxtime, the maximum speed shelves of compressor are second gear;
Under above-mentioned compressor restrictive condition
11, when A >=2, compressor runs with the maximum speed shelves of current energy operational taps;
12, as 0≤A < 2, compressor runs with third gear rotating speed, if a compressor restrictive condition maximum allowable speed is second gear, then runs with second gear rotating speed;
13. as-3 < A < 0, and compressor runs with second gear rotating speed;
14. when A≤-3, and compressor is out of service;
Under air conditioner refrigerating pattern, compressor carries out the concrete mode of intelligent frequency-conversion according to real time temperature in design temperature, car in car and is:
11, when A1 >=2, compressor third gear rotating speed runs;
12, as 0≤A1 < 2, compressor runs with third gear rotating speed;
13. as-3 < A1 < 0, and compressor runs with second gear rotating speed;
14. when A1≤-3, and compressor is out of service;
When pure battery heats, according to water temperature T in water tank water temperature, compressor carries out intelligent frequency-conversion, works as T water temperature≤ T water temperature maxtime, compressor third gear rotating speed runs, and works as T water temperature max< T water temperature≤ T water temperature maxwhen+5, compressor second gear rotating speed runs, and works as T water temperature >t water temperature maxwhen+5, compressor stops;
During pure battery refrigeration, according to water temperature T in water tank water temperature, compressor carries out intelligent frequency-conversion, when water temperature T in water tank water temperature> T water temperature minwhen+5, compressor third gear rotating speed runs, and works as T water temperature min< T water temperature≤ T water temperature minwhen+5, compressor second gear rotating speed runs, and works as T water temperature≤ T during water temperature min, compressor stops;
When battery and air-conditioning heat simultaneously, compressor is according to T water temperature, T interior reality, T inside establishcarry out intelligent frequency modulation; When power brick temperature is lower than T battery min, water temperature T water temperature≤ T water temperature max, T interior reality< T inside establishtime, compressor fourth speed rotating speed runs; Work as T water temperature>=T water temperature max, T interior reality=T inside establishtime, compressor second gear rotating speed runs, T interior reality> T inside establishwhen+3, compressor quits work;
When battery and air-conditioning freeze simultaneously, compressor is according to T water temperature, T interior reality, T inside establishcarry out intelligent frequency modulation; When power brick temperature is more than T battery max, water temperature T in water tank water temperature> T water temperature min+ 5, and T interior reality> T inside establishtime, compressor fourth speed rotating speed runs, and works as T water temperature min< T water temperature≤ T water temperature min+ 5, and T interior reality=T inside establishtime, compressor third gear rotating speed runs, and works as T water temperature≤ T during water temperature min, compressor stops.
Preferably, the control method of this battery constant temperature and air-conditioning system carries out VFC to the outer blower fan of car and car inner blower, and its concrete mode is
During pure air-conditioning heating pattern, the outer blower fan of car carries out frequency conversion according to the temperature outside car, works as T outer realitybe less than or equal to default T outer zero boundaryduring temperature, the outer blower fan of car runs with 100% rotating speed; Work as T outer realitybe greater than default T outer zero boundaryduring temperature, the outer blower fan frequency reducing of car runs with 85% rotating speed; During heating mode, car inner blower can manual adjustments gear or automatically adjust according to the size of A value: when A>=2, car inner blower 100% rotating speed runs; As 0≤A < 2, car inner blower 80% rotating speed runs; As-3 < A < 0, car inner blower 60% rotating speed runs; When A≤-3, car inner blower 60% rotating speed runs;
Pure air conditioner refrigerating pattern outer blower fan of getting off carries out frequency conversion according to car external heat exchanger core body temperature, works as T outer corebe less than default T outer core zero boundarytime, the outer blower fan of car runs with 75% rotating speed; Work as T outer core zero boundary< T outer core< T outer core zero boundarywhen+5, the outer blower fan of car runs with 85% rotating speed; T outer core>=T outer core zero boundarywhen+5, the outer blower fan of car runs with 100% rotating speed; And refrigeration mode get off inner blower can manual adjustments gear or automatically adjust according to the size of A1 value: when A1>=2, car inner blower 100% rotating speed runs; As 0≤A1 < 2, car inner blower 80% rotating speed runs; As-3 < A1 < 0, car inner blower 60% rotating speed runs.
After have employed technique scheme, effect of the present invention is: because the control method of this battery constant temperature and air-conditioning system is reasonable, according to operational mode and the work of ambient conditions compressor intelligent frequency-conversion of reality, compressor is utilized to freeze to the water in water tank or heat, then utilize the temperature of recirculated water regulating cell bag, battery is not only made to be in a desirable temperature environment, make the capacity usage ratio of electric air-conditioning higher, simultaneously, the effective anti-cold wind of control method of battery constant temperature and air-conditioning system is blown in car, make use of waste heat fully when heating closedown.
In addition, the control method of this electric air-conditioning also has defrost function, can use, heating effect is normally used in some extreme weathers.Meanwhile, the outer blower fan of compressor, car inner blower and car all can realize intelligent frequency modulation, carries out intelligent switching frequency, make system cloud gray model more energy-conservation at different mode.
Accompanying drawing explanation
Below in conjunction with drawings and Examples, the present invention is further described.
Fig. 1 is the system diagram of the embodiment of the present invention;
In accompanying drawing: 1. compressor; 2. temperature switch; 3. high-voltage switch gear; 4. cross valve; 41. air inlets; 42. gas returning ports; 43. heat flow direction mouth; 44. refrigeration stream are to mouth; 5. car external heat exchanger; 6. car external heat exchanger temperature sensor; 7. the outer temperature sensor of car; 8. the first control valve; 9. the first Bidirectional expansion valve; 10. the outer blower fan of car; Heat exchanger in 11. cars; 12. second auxiliary electric heater units; Heat exchange temperature sensor in 13. cars; 14. car inner blowers; 15. second control valves; 16. expansion boxes; 17. gas-liquid separators; 18. the 3rd control valves; 19. the 4th control valves; 20. second Bidirectional expansion valves; 21. water supply tanks; 22. low tension switches; 23. battery cases; 24. tempering coil; 25. power brick temperature sensors; 26. first auxiliary electric heater units; 27. refrigeration coils; 28. cooling-water temperature sensors; 29. water pumps.
Detailed description of the invention
Below by specific embodiment, the present invention is described in further detail.
As shown in Figure 1, a kind of pure electric automobile battery constant temperature and air-conditioning system, comprise compressor 1, cross valve 4, car external heat exchanger 5, first Bidirectional expansion valve 9, heat exchanger 11 in car, gas-liquid separator 17, described car external heat exchanger 5 and Che Nei heat exchanger 11 are supporting respectively the outer blower fan 10 of car and car inner blower 14, also comprise water tank, battery case 23, refrigeration coil 27, water pump 29 and tempering coil 24, described refrigeration coil 27 is arranged in water tank, water tank is connected with water supply tank 21, described tempering coil 24 to be arranged in battery case 23 and to be positioned at bottom, power brick is arranged in battery case 23, power brick is provided with power brick temperature sensor 25, for detecting the temperature of power brick, the bottom of battery case 23 is provided with leaking hole, conveniently leak, avoid ponding.Described water pump 29 is connected to the delivery port of water tank and one end of tempering coil 24, the other end of described tempering coil 24 is connected to the water return outlet of water tank, described refrigeration coil 27 is arranged in water tank, described cross valve 4 is provided with air inlet 41, gas returning port 42, refrigeration stream flows to mouth 43 to mouth 44 with heating, the exhaust outlet of described compressor 1 is communicated with the air inlet 41 of cross valve 4, the exhaust outlet of compressor 1 is provided with temperature switch 2 and high-voltage switch gear 3, the gas returning port 42 of described cross valve 4 is connected by the air entry of return line with compressor 1, the air entry place of compressor 1 is provided with low tension switch 22, described gas-liquid separator 17 is arranged in return line, the gas link of described car external heat exchanger 5 connects the refrigeration stream of cross valve 4 to mouth 44, the liquid link of car external heat exchanger is connected to one end of the first Bidirectional expansion valve 9 by the first air-conditioning duct, the other end of the first Bidirectional expansion valve 9 is connected to the liquid link of heat exchanger 11 in car, in described car, the gas link of heat exchanger 11 is connected to heating of cross valve 4 by the second air-conditioning duct and flows to mouth 43, one end of described refrigeration coil 27 is connected to the liquid link of car external heat exchanger by the first battery Constant-temp. pipeline, the other end of described refrigeration coil 27 flows to mouth 43 by being connected to heating of cross valve 4 by the second battery Constant-temp. pipeline, the other end of described refrigeration coil 27 is connected between the liquid link of heat exchanger 11 in the other end of the first Bidirectional expansion valve 9 and car by the 3rd battery Constant-temp. pipeline, described first air-conditioning duct is provided with the first control valve 7, described second air-conditioning duct is provided with the second control valve 15, described first battery Constant-temp. pipeline is provided with the second Bidirectional expansion valve 20, described second battery Constant-temp. pipeline is provided with the 3rd control valve 18, described 3rd battery Constant-temp. pipeline is provided with the 4th control valve 19, described first control valve 7, second control valve 15, 3rd control valve 18 and the 4th control valve 19 are magnetic valve, described second battery Constant-temp. pipeline and the second air-conditioning duct come together in an expansion box 16, and flow to mouth 43 by expansion box 16 and be communicated with heating.
The gas link of described car external heat exchanger 5 and Che Nei heat exchanger 11 is provided with gas distributor, the gas distributor of car external heat exchanger 5 is connected to mouth 44 with the refrigeration stream of cross valve 4, in car, the heating of gas distributor and cross valve 4 of heat exchanger 11 flows to mouth 43 and is connected, the liquid link of described car external heat exchanger 5 and Che Nei heat exchanger 11 is provided with liquid distributor, the liquid distributor of this car external heat exchanger 5 is connected with one end of a port of the first Bidirectional expansion valve 9 and the first battery Constant-temp. pipeline, another port of first Bidirectional expansion valve 9 is connected with the liquid distributor of heat exchanger in car 11.
Described liquid distributor comprises the dispensed chambers of a taper, this dispensed chambers is provided with a total interface of liquid and several distributing pipes, and in these several distributing pipes or car interior with car external heat exchanger 5, the heat exchange of heat exchanger 11 is in charge of one_to_one corresponding and is communicated with.
Gas distributor on described car external heat exchanger 5 comprises a cylinder, this cylinder is fixed on the gas link of car external heat exchanger 5, this cylinder is provided with a total interface of gas and several distribution openings, described total interface is connected to mouth 44 with the refrigeration stream of cross valve 4, and several distribution openings described are in charge of one_to_one corresponding with the heat exchange in car external heat exchanger 5 and are communicated with.In car, the gas distributor structure of heat exchanger 11 is identical with the gas distributor structure outside car.
Also be provided with the first auxiliary electric heater unit 26 in described water tank, in described car, the distinguished and admirable downstream of heat exchanger 11 is provided with the second auxiliary electric heater unit 12.
Described electric air-conditioning system also comprises the vehicle interior temperature sensor be arranged in car, the car outer sensor be arranged at outside car, the car external heat exchanger temperature sensor 6 be arranged on car external heat exchanger 5 core body, be arranged in car on heat exchanger 11 core body car in heat exchange temperature sensor 13, the outer temperature sensor 7 of this vehicle interior temperature sensor, car, car external heat exchanger temperature sensor 6 are all connected with control device with Che Nei heat exchange temperature sensor 13, and this control device is electrically connected with car inner blower 14, the outer blower fan 10 of car and compressor 1.Also cooling-water temperature sensor 28 is provided with in water tank.
In addition, the control method of the present embodiment also a kind of pure electric automobile battery constant temperature and air-conditioning system, it comprises with under type:
A, pure air conditioning mode
A1, air-conditioning heating pattern
A11, air-conditioning heating pattern start:
If and only if, and car external environment temperature is less than T outer maxtime heating mode start, after startup, generally set T outer max=16 DEG C, so only when the outer temperature of car is less than 16 DEG C, heating mode just can start, driver's maloperation can be avoided like this, cross valve 4 switches to heating mode, the air inlet 41 of cross valve 4 is made to flow to mouth 43 and be communicated with heating, refrigeration stream is communicated with to mouth 44 with gas returning port 42, first control valve 7 and the second control valve 15 are opened, 3rd control valve 18 and the 4th control valve 19 are closed, compressor 1 starts, refrigerant becomes the gaseous coolant of HTHP after compressor 1 compresses, gaseous coolant is by evenly entering into heat exchanger 11 heat exchange in car after cross valve 4, low temperature liquid refrigerant is become again by the first Bidirectional expansion valve 9 step-down, low temperature liquid refrigerant becomes the gas-liquid mixture of low temperature after evenly entering into car external heat exchanger 5 heat exchange, eventually pass refrigeration stream and flow back into gas-liquid separator 17 to mouth 44 and gas returning port 42, the gaseous coolant of low temperature is back to compressor 1 through the air entry of compressor 1 and enters next circulation, compressor 1 is according to design temperature T in car inside establish, real time temperature T in car interior realityreal time temperature T outer with car outer realitycarry out intelligent frequency-conversion, when the core body temperature of heat exchanger in car 11 is lower than T interior mintime car inner blower 14 stop operating, when the core body temperature of heat exchanger in car 11 is higher than T interior maxtime car inner blower 14 rotate, when the core body temperature of heat exchanger in car 11 is in T with the rotating speed gear of setting interior minto T interior maxbetween time car inner blower 14 rotate with minimum speed gear, during actual set, T interior mintemperature gets 26 DEG C, and T interior maxget 35 DEG C.When in car, heat exchanger 11 core body temperature is lower like this, car inner blower 14 stops operating, and can effectively prevent cold wind from blowing in car.
A12, air-conditioning heating pattern are closed:
Close heating mode and powered-down time, first close compressor 1, then late release car inner blower 14, finally switch refrigeration mode by cross valve 4, and air inlet 41 is communicated with to mouth 44 with refrigeration stream, heats to flow to mouth 43 and be communicated with gas returning port 42; And close heating mode air-conditioning system when being in standby, first close compressor 1, and car inner blower 14 middling speed gear rotates again with the continuous running of minimum speed gear after certain hour, and cross valve 4 switches refrigeration mode, after closing heating mode, and setting A=T inside establish-T interior reality, when A is greater than setting value N, heating mode just starts again; N is-1;
A2, air conditioner refrigerating pattern
A21, air conditioner refrigerating pattern start:
If and only if, and car external environment temperature is more than or equal to T outer mintime refrigeration mode start, this T outer minget 13 DEG C, when car external environment temperature is more than or equal to 13 DEG C, refrigeration mode just starts, and is less than 13 DEG C, refrigeration mode to start, and compressor 1 is protected, after startup, cross valve 4 switches to refrigeration mode, and air inlet 41 is communicated with to mouth 44 with refrigeration stream, heats to flow to mouth 43 and be communicated with gas returning port 42, first control valve 7 and the second control valve 15 are opened, 3rd control valve 18 and the 4th control valve 19 are closed, compressor 1 is restarted after the outer blower fan 10 of car starts, refrigerant becomes the gaseous coolant of HTHP after compressor 1 compresses, gaseous coolant is by evenly entering heat exchange in car external heat exchanger 5 after cross valve 4, low temperature liquid refrigerant is become again by the first Bidirectional expansion valve 9 step-down, the gas-liquid mixture of low temperature is become after even heat exchanger 11 heat exchange into the car of low temperature liquid refrigerant, eventually pass to heat and flow to mouth 43 and gas returning port 42 flows back into gas-liquid separator 17, the gaseous coolant of low temperature is back to compressor 1 through the air entry of compressor 1 and enters next circulation, compressor 1 is according to design temperature in car, in car, real time temperature carries out intelligent frequency-conversion,
A22, air conditioner refrigerating pattern are closed:
When closing refrigeration mode, first close compressor 1 then closes the outer blower fan 10 of car, setting A1=T interior reality-T inside establish, when A is greater than setting value N1, refrigeration mode just starts again; This N1 is also-1.
B, pure battery thermostatic control pattern
B1, battery refrigeration mode
When power brick temperature is more than T battery max, water temperature T in water tank water temperaturebe greater than T water temperature mintime, battery refrigeration mode starts, actual T battery maxget 36 DEG C, T water temperature minget 4 DEG C.Cross valve 4 switches to refrigeration mode, and air inlet 41 is communicated with to mouth 44 with refrigeration stream, heats to flow to mouth 43 and be communicated with gas returning port 42, 3rd control valve 18 is opened, first control valve 7, second control valve 15 the 4th control valve 19 is closed, compressor 1 is restarted after the outer blower fan 10 of car starts, refrigerant becomes the gaseous coolant of HTHP after compressor 1 compresses, gaseous coolant is by evenly entering heat exchange in car external heat exchanger 5 after cross valve 4, low temperature liquid refrigerant is become again by the second Bidirectional expansion valve 20 step-down, low temperature liquid refrigerant enters into refrigeration coil 27 and freezes to the water in water tank, water pump 29 starts the power brick cooling in battery case 23, refrigerant becomes the gas-liquid mixture of low temperature after heat exchange, eventually pass to heat and flow to mouth 43 and gas returning port 42 flows back into gas-liquid separator 17, the gaseous coolant of low temperature is back to compressor 1 through the air entry of compressor 1 and enters next circulation, compressor 1 and the outer blower fan 10 of car carry out intelligent frequency-conversion according to the temperature in water tank, when water temperature T in water tank water temperaturebe less than T water temperature mintime battery refrigeration mode stop,
B2, battery heating mode
When power brick temperature is lower than T battery min, water temperature is less than or equal to T water temperature maxtime, in reality, T electricitywhen pond min is 10 DEG C, battery heating mode starts, and cross valve 4 switches to heating mode, and make air inlet 41 flow to mouth 43 and be communicated with heating, refrigeration stream is communicated with to mouth 44 with gas returning port 42, 3rd control valve 18 is opened, first control valve 7, second control valve 15 the 4th control valve 19 is closed, compressor 1 starts, refrigerant becomes the gaseous coolant of HTHP after compressor 1 compresses, gaseous coolant is by entering into refrigeration coil 27 heat exchange after cross valve 4, water pump 29 starts the power brick intensification in battery case 23, make gaseous coolant become temperature to reduce, low temperature liquid refrigerant is become again by the second Bidirectional expansion valve 20 step-down, low temperature liquid refrigerant becomes the gas-liquid mixture of low temperature after evenly entering into car external heat exchanger 5 heat exchange, eventually pass refrigeration stream and flow back into gas-liquid separator 17 to mouth 44 and gas returning port 42, the gaseous coolant of low temperature is back to compressor 1 through the air entry of compressor 1 and enters next circulation, compressor 1 and the outer blower fan 10 of car carry out intelligent frequency-conversion according to the temperature in water tank, when water temperature T in water tank water temperaturebe greater than T water temperature maxtime battery refrigeration mode stop,
C, air-conditioning and battery constant temperature mixed mode
C1 air-conditioning and battery refrigeration mode simultaneously
When to meet the condition in A2 and B1 simultaneously, start air-conditioning and battery refrigeration, first control valve 7, second control valve 15 and the 3rd control valve 18 are opened, 4th control valve 19 is closed, cross valve 4 is refrigeration mode, compressor 1 starts makes refrigerant enter into heat exchanger 11 and refrigeration coil 27 heat exchange in car respectively through the first Bidirectional expansion valve 9 and the second Bidirectional expansion valve 20, and water pump 29 and car inner blower 14 start and freeze to power brick and Che Nei, the outer blower fan 10 of compressor 1 and car according to T water temperature, T interior reality, T inside establishcarry out intelligent frequency modulation; When arbitrary pattern meets stop condition, another pattern is all run according to independent operational mode;
C2 air-conditioning and battery heating mode simultaneously
When to meet the condition in A1 and B2 simultaneously, startup air-conditioning and battery heat, first control valve 7 and the 3rd control valve 18 are closed, second control valve 15 and the 4th control valve 19 are opened, cross valve 4 is heating mode, and compressor 1 starts, refrigerant first after heat exchanger in car 11 heat exchange again through the water of refrigeration coil 27 heating water tank, then become cryogenic liquid by the second Bidirectional expansion valve 20, then flow in compressor 1 from the refluxing opening of cross valve 4 after car external heat exchanger 5 heat exchange heat absorption; The outer blower fan 10 of compressor 1 and car according to T water temperature, T interior reality, T inside establishcarry out intelligent frequency modulation; When arbitrary pattern meets stop condition, another pattern is all run according to independent operational mode.
Auxiliary electrical heater in the also supporting car of heat exchanger 11 in car in described air conditioning control method; Water tank auxiliary electrical heater is provided with in water tank;
Just auxiliary electrical heater in car is started: 1) compressor 1 running time was more than 2 minutes when meeting the following conditions simultaneously; 2) the positive continuous service of car inner blower 14; 3) distance auxiliary electrical heater shut-in time last time is more than 1 minute; 4) in car, the core body temperature of heat exchanger 11 is less than preset value T electricity opens; Wherein, preset value T electricity opensbe 50 DEG C, 5) vehicle interior temperature is less than preset value T interior default; Preset value T interior defaultbe 20 DEG C, 6.A value is greater than setting value N2, and this N2 is greater than N; N2 is 3.
When meeting the following conditions for the moment, in car, auxiliary electrical heater is closed: 1, in car, the core body temperature of heat exchanger 11 is more than or equal to preset value T electricity opens; 2, A value is less than or equal to setting value N2-1; N2 is 3 as from the foregoing, and when so A value is less than or equal to 2, auxiliary electrical heater is closed; 3, vehicle interior temperature is greater than preset value T interior default+ 1; 4, when heating mode and refrigeration mode switch;
When power brick temperature is lower than T battery min, water temperature is less than or equal to T water temperature maxtime, and run more than 5 minutes under battery heating mode, water tank auxiliary electrical heater starts, T water temperature maxget 30 DEG C, when water temperature is more than or equal to T water temperature maxwhen+5, water tank auxiliary electrical heater stops, and systematic evaluation becomes the heating mode of pure air-conditioning.
When heating mode, because low temperature refrigerant needs endothermic gasification in car external heat exchanger 5, therefore, the frosting of car external heat exchanger 5 possibility, which decreases the heat exchange efficiency of car external heat exchanger 5.Described air conditioning control method is all also provided with defrosting mode under air-conditioning heating pattern, battery heating mode or air-conditioning battery simultaneously heating mode:
The outer real time temperature of setting car is T outer reality, car external heat exchanger 5 core body temperature T outer core, work as T outer reality-T outer coreduring>=setting value N3, and the heating mode of correspondence started defrosting mode more than 30 minutes lower running time, N3 is preferably 9 DEG C, when defrosting starts, compressor 1, car inner blower 14 and the outer blower fan 10 of car all stop, cross valve 4 switches to refrigeration mode, first control valve 7 and the second control valve 15 are opened, 3rd control valve 18 and the 4th control valve 19 are closed, then compressor 1 starts and gradually becomes oepration at full load, car inner blower 14 and the outer blower fan 10 of car still stop, refrigerant runs according to the pure air conditioner refrigerating pattern route of electric air-conditioning, make the gaseous coolant of HTHP in car external heat exchanger 5 by defrosting, work as T outer corecontinue for some time more than T outer core minor defrosting mode continuous service stops defrosting when exceeding minimum defrosting time.T outer core minwhen being chosen to be 7 DEG C, needing within lasting 80 seconds, just stop more than 7 DEG C, work as T outer core minwhen being chosen to be 12 DEG C, as long as continue namely to stop more than 12 DEG C for 5 seconds, and minimum defrosting time is generally set as 3 minutes.
Under air-conditioning heating pattern, compressor 1 is according to design temperature T in car inside establish, real time temperature T in car interior realityreal time temperature T outer with car outer realitythe concrete mode of carrying out intelligent frequency-conversion is; Compressor 1 speed setting has fourth gear, again slow to be followed successively by soon first grade, second gear, third gear and fourth speed, compressor 1 is according to T outer realityshi great little carrys out the maximum speed of limit compression machine 1;
1, T is worked as outer realityduring < 9 DEG C, the maximum speed shelves of compressor 1 are third gear; Compressor 1 can first grade, second gear, arbitrary rotating speed shelves run in third gear.
2, as 10 DEG C of < T outer realityduring < 12 DEG C, the maximum speed shelves of compressor 1 are third gear; In this temperature range, compressor 1 can only first grade, run under second gear and third gear rotating speed
3, as 13 DEG C of < T outer reality< T outer maxtime, the maximum speed shelves of compressor 1 are second gear; Can only first grade and second gear operation.
Under above-mentioned compressor 1 restrictive condition
11, when A>=2, compressor 1 runs with the maximum speed shelves of current energy operational taps; Such as, T is worked as outer realityduring < 9 DEG C, compressor 11 runs, as 10 DEG C of < T with maximum speed third gear outer realityduring < 12 DEG C, run, as 13 DEG C of < T with third gear outer reality< T outer maxtime, run with second gear.
12, as 0≤A < 2, compressor 1 runs with third gear rotating speed, if a compressor 1 restrictive condition maximum allowable speed is second gear, then runs with second gear rotating speed;
13. as-3 < A < 0, and compressor 1 runs with second gear rotating speed;
14. when A≤-3, and compressor 1 is out of service; Compressor 1 carries out intelligent frequency modulation operation according to above-mentioned logic, avoids compressor 1 power overflow.
Under air conditioner refrigerating pattern, compressor 1 carries out the concrete mode of intelligent frequency-conversion according to real time temperature in design temperature, car in car and is:
11, when A1 >=2, compressor 1 third gear rotating speed runs;
12, as 0≤A1 < 2, compressor 1 runs with third gear rotating speed;
13. as-3 < A1 < 0, and compressor 1 runs with second gear rotating speed;
14. when A1≤-3, and compressor 1 is out of service;
When pure battery heats, according to water temperature T in water tank water temperature, compressor 1 carries out intelligent frequency-conversion, works as T water temperature≤ T water temperature maxtime, T water temperature maxbe 30 DEG C, compressor 1 third gear rotating speed runs, and works as T water temperature max< T water temperature≤ T water temperature maxwhen+5, compressor 1 second gear rotating speed runs, and works as T water temperature> T water temperature maxwhen+5, compressor 1 stops;
During pure battery refrigeration, according to water temperature T in water tank water temperature, compressor 1 carries out intelligent frequency-conversion, when water temperature T in water tank water temperature> T water temperature minwhen+5, T water temperature minbe 4 DEG C, compressor 1 third gear rotating speed runs, and works as T water temperature min< T water temperature≤ T water temperature minwhen+5, compressor 1 second gear rotating speed runs, and works as T water temperature≤ T during water temperature min, compressor 1 stops;
When battery and air-conditioning heat simultaneously, compressor 1 is according to T water temperature, T interior reality, T inside establishcarry out intelligent frequency modulation; When power brick temperature is lower than T battery min, water temperature T water temperature≤ T water temperature max, T interior reality< T inside establishtime, compressor 1 fourth speed rotating speed runs; Work as T water temperature>=T water temperature max, T interior reality=T inside establishtime, compressor 1 second gear rotating speed runs, T interior reality> T inside establishwhen+3, compressor 1 quits work;
When battery and air-conditioning freeze simultaneously, compressor 1 is according to T water temperature, T interior reality, T inside establishcarry out intelligent frequency modulation; When power brick temperature is more than T battery max, water temperature T in water tank water temperature> T water temperature min+ 5, and T in real> T inside establishtime, compressor 1 fourth speed rotating speed runs, and works as T water temperature min< T water temperature≤ T water temperature min+ 5, and T interior reality=T inside establishtime, compressor 1 third gear rotating speed runs, and works as T water temperature≤ T during water temperature min, compressor 1 stops.
The control method of this battery constant temperature and air-conditioning system carries out VFC to the outer blower fan 10 of car and car inner blower 14, and its concrete mode is
During pure air-conditioning heating pattern, the outer blower fan 10 of car carries out frequency conversion according to the temperature outside car, works as T outer realitybe less than or equal to default T outer zero boundaryduring temperature, the outer blower fan 10 of car runs with 100% rotating speed; Work as T outward realbe greater than default T outer zero boundaryduring temperature, outer blower fan 10 frequency reducing of car runs with 85% rotating speed; This T outer zero boundarybe preferably 7 DEG C, during heating mode, car inner blower 14 can manual adjustments gear or automatically adjust according to the size of A value: when A>=2, car inner blower 14 runs with 100% rotating speed; As 0≤A < 2, car inner blower 14 runs with 80% rotating speed; As-3 < A < 0, car inner blower 14 runs with 60% rotating speed; When A≤-3, car inner blower 14 runs with 60% rotating speed;
Pure air conditioner refrigerating pattern outer blower fan 10 of getting off carries out frequency conversion according to car external heat exchanger 5 core body temperature, works as T outer corebe less than default T outer core zero boundarytime, the outer blower fan 10 of car runs with 75% rotating speed; Work as T outer core zero boundary< T outer core< T outer core zero boundarywhen+5, the outer blower fan 10 of car runs with 85% rotating speed; T outer core>=T outer core zero boundarywhen+5, the outer blower fan 10 of car runs with 100% rotating speed; This T outer core zero boundarybe preferably 40 DEG C; And refrigeration mode is got off, inner blower 14 can manual adjustments gear or automatically adjust according to the size of A1 value: when A1>=2, car inner blower 14 runs with 100% rotating speed; As 0≤A1 < 2, car inner blower 14 runs with 80% rotating speed; As-3 < A1 < 0, car inner blower 14 runs with 60% rotating speed.
The above embodiment is only the description to the preferred embodiment of the present invention; not as limiting the scope of the invention; design on the basis of spirit not departing from the present invention; the various distortion make technical solution of the present invention and transformation, all should fall in protection domain that claims of the present invention determine.

Claims (9)

1. a pure electric automobile battery constant temperature and air-conditioning system, comprise compressor, heat exchanger, gas-liquid separator in cross valve, car external heat exchanger, the first Bidirectional expansion valve, car, described car external heat exchanger and Che Nei heat exchanger are supporting respectively the outer blower fan of car and car inner blower, it is characterized in that: also comprise water tank, battery case, refrigeration coil, water pump and tempering coil, described refrigeration coil is arranged in water tank, described tempering coil is arranged in battery case, and described water pump is connected to the delivery port of water tank and one end of tempering coil, the other end of described tempering coil is connected to the water return outlet of water tank, described refrigeration coil is arranged in water tank, described cross valve is provided with air inlet, gas returning port, refrigeration stream is to mouth and heat flow direction mouth, the exhaust outlet of described compressor is communicated with the air inlet of cross valve, the gas returning port of described cross valve is connected with the air entry of compressor by return line, described gas-liquid separator is arranged in return line, the gas link of described car external heat exchanger connects the refrigeration stream of cross valve to mouth, the liquid link of car external heat exchanger is connected to one end of the first Bidirectional expansion valve by the first air-conditioning duct, the other end of the first Bidirectional expansion valve is connected to the liquid link of heat exchanger in car, what in described car, the gas link of heat exchanger was connected to cross valve by the second air-conditioning duct heats flow direction mouth, one end of described refrigeration coil is connected to the liquid link of car external heat exchanger by the first battery Constant-temp. pipeline, the other end of described refrigeration coil heats flow direction mouth by what be connected to cross valve by the second battery Constant-temp. pipeline, the other end of described refrigeration coil is connected between the liquid link of heat exchanger in the other end of the first Bidirectional expansion valve and car by the 3rd battery Constant-temp. pipeline, described first air-conditioning duct is provided with the first control valve, described second air-conditioning duct is provided with the second control valve, described first battery Constant-temp. pipeline is provided with the second Bidirectional expansion valve, described second battery Constant-temp. pipeline is provided with the 3rd control valve, described 3rd battery Constant-temp. pipeline is provided with the 4th control valve.
2. a kind of pure electric automobile battery constant temperature as claimed in claim 1 and air-conditioning system, it is characterized in that: the gas link of described car external heat exchanger and Che Nei heat exchanger is provided with gas distributor, the gas distributor of car external heat exchanger is connected to mouth with the refrigeration stream of cross valve, in car, the heating of gas distributor and cross valve of heat exchanger flows to mouth and is connected, the liquid link of described car external heat exchanger and Che Nei heat exchanger is provided with liquid distributor, the liquid distributor of this car external heat exchanger is connected with one end of a port of the first Bidirectional expansion valve and the first battery Constant-temp. pipeline, another port of first Bidirectional expansion valve is connected with the liquid distributor of heat exchanger in car.
3. a kind of pure electric automobile battery constant temperature as claimed in claim 2 and air-conditioning system, is characterized in that: be also provided with the first auxiliary electric heater unit in described water tank, and in described car, the distinguished and admirable downstream of heat exchanger is provided with the second auxiliary electric heater unit.
4. a kind of pure electric automobile battery constant temperature as claimed in claim 3 and air-conditioning system, it is characterized in that: described liquid distributor comprises the dispensed chambers of a taper, this dispensed chambers is provided with a total interface of liquid and several distributing pipes, in these several distributing pipes or car interior with car external heat exchanger, the heat exchange of heat exchanger is in charge of one_to_one corresponding and is communicated with.
5. a control method for pure electric automobile battery constant temperature and air-conditioning system, it comprises with under type:
A, pure air conditioning mode
A1, air-conditioning heating pattern
A11, air-conditioning heating pattern start:
If and only if, and car external environment temperature is less than T outer maxtime heating mode start, after startup, cross valve switches to heating mode, the air inlet of cross valve is made to flow to mouth and be communicated with heating, refrigeration stream is communicated with to mouth with gas returning port, first control valve and the second control valve are opened, 3rd control valve and the 4th control valve are closed, compressor start, refrigerant becomes the gaseous coolant of HTHP after compressor compresses, gaseous coolant is by evenly entering into heat exchanger heat exchange in car after cross valve, low temperature liquid refrigerant is become again by the first Bidirectional expansion valve step-down, low temperature liquid refrigerant becomes the gas-liquid mixture of low temperature after evenly entering into the heat exchange of car external heat exchanger, eventually pass refrigeration stream and flow back into gas-liquid separator to mouth and gas returning port, the gaseous coolant of low temperature is back to compressor through the air entry of compressor and enters next circulation, compressor is according to design temperature T in car inside establish, real time temperature T in car interior realityreal time temperature T outer with car outer realitycarry out intelligent frequency-conversion, when the core body temperature of heat exchanger in car is lower than T interior mintime car inner blower stop operating, when the core body temperature of heat exchanger in car is higher than T interior maxtime car inner blower rotate, when in car, the core body temperature of heat exchanger is in T with the rotating speed gear of setting interior minto T interior maxbetween time car inner blower rotate with minimum speed gear,
A12, air-conditioning heating pattern are closed:
Close heating mode and powered-down time, first close compressor, then late release car inner blower, finally switches refrigeration mode by cross valve, and air inlet is communicated with to mouth with refrigeration stream, heats to flow to mouth and be communicated with gas returning port; And close heating mode air-conditioning system when being in standby, first close compressor, and car inner blower middling speed gear rotates again with the continuous running of minimum speed gear after certain hour, and cross valve switches refrigeration mode, after closing heating mode, and setting A=T inside establish-T interior reality, when A is greater than setting value N, heating mode just starts again;
A2, air conditioner refrigerating pattern
A21, air conditioner refrigerating pattern start:
If and only if, and car external environment temperature is more than or equal to T outer mintime refrigeration mode start, after startup, cross valve switches to refrigeration mode, and air inlet is communicated with to mouth with refrigeration stream, heats to flow to mouth and be communicated with gas returning port, first control valve and the second control valve are opened, 3rd control valve and the 4th control valve are closed, compressor is restarted after the outer fan starting of car, refrigerant becomes the gaseous coolant of HTHP after compressor compresses, gaseous coolant is by evenly entering heat exchange in car external heat exchanger after cross valve, low temperature liquid refrigerant is become again by the first Bidirectional expansion valve step-down, the gas-liquid mixture of low temperature is become after the even exchanger heat into the car of low temperature liquid refrigerant exchanges, eventually pass to heat and flow to mouth and gas returning port flows back into gas-liquid separator, the gaseous coolant of low temperature is back to compressor through the air entry of compressor and enters next circulation, compressor is according to design temperature in car, in car, real time temperature carries out intelligent frequency-conversion,
A22, air conditioner refrigerating pattern are closed:
When closing refrigeration mode, first close compressor then closes the outer blower fan of car, setting A1=T interior reality-T inside establish, when A is greater than setting value N1, refrigeration mode just starts again;
B, pure battery thermostatic control pattern
B1, battery refrigeration mode
When power brick temperature is more than T battery max, water temperature T in water tank water temperaturebe greater than T water temperature mintime, battery refrigeration mode starts, and cross valve switches to refrigeration mode, and air inlet is communicated with to mouth with refrigeration stream, heats and flows to mouth and be communicated with gas returning port, 3rd control valve is opened, first control valve, second control valve the 4th control valve is closed, compressor is restarted after the outer fan starting of car, refrigerant becomes the gaseous coolant of HTHP after compressor compresses, gaseous coolant is by evenly entering heat exchange in car external heat exchanger after cross valve, low temperature liquid refrigerant is become again by the second Bidirectional expansion valve step-down, low temperature liquid refrigerant enters into refrigeration coil and freezes to the water in water tank, starting mode of pump is to the power brick cooling in battery case, refrigerant becomes the gas-liquid mixture of low temperature after heat exchange, eventually pass to heat and flow to mouth and gas returning port flows back into gas-liquid separator, the gaseous coolant of low temperature is back to compressor through the air entry of compressor and enters next circulation, compressor and the outer blower fan of car carry out intelligent frequency-conversion according to the temperature in water tank, when water temperature T in water tank water temperaturebe less than T water temperature mintime battery refrigeration mode stop,
B2, battery heating mode
When power brick temperature is lower than T battery min, water temperature is less than or equal to T water temperature maxtime, battery heating mode starts, and cross valve switches to heating mode, and make air inlet flow to mouth and be communicated with heating, refrigeration stream is communicated with to mouth with gas returning port, 3rd control valve is opened, first control valve, second control valve the 4th control valve is closed, compressor start, refrigerant becomes the gaseous coolant of HTHP after compressor compresses, gaseous coolant is by entering into refrigeration coil heat exchange after cross valve, starting mode of pump heats up to the power brick in battery case, make gaseous coolant become temperature to reduce, low temperature liquid refrigerant is become again by the second Bidirectional expansion valve step-down, low temperature liquid refrigerant becomes the gas-liquid mixture of low temperature after evenly entering into the heat exchange of car external heat exchanger, eventually pass refrigeration stream and flow back into gas-liquid separator to mouth and gas returning port, the gaseous coolant of low temperature is back to compressor through the air entry of compressor and enters next circulation, compressor and the outer blower fan of car carry out intelligent frequency-conversion according to the temperature in water tank, when water temperature T in water tank water temperaturebe greater than T water temperature maxtime battery refrigeration mode stop,
C, air-conditioning and battery constant temperature mixed mode
C1 air-conditioning and battery refrigeration mode simultaneously
When to meet the condition in A2 and B1 simultaneously, start air-conditioning and battery refrigeration, first control valve, the second control valve and the 3rd control valve are opened, 4th control valve is closed, cross valve is refrigeration mode, compressor start makes refrigerant enter into heat exchanger and refrigeration coil heat exchange in car respectively through the first Bidirectional expansion valve and the second Bidirectional expansion valve, and water pump and car inner blower start and freeze to power brick and Che Nei, compressor and the outer blower fan of car according to T water temperature, T interior reality, T inside establishcarry out intelligent frequency modulation; When arbitrary pattern meets stop condition, another pattern is all run according to independent operational mode;
C2 air-conditioning and battery heating mode simultaneously
When to meet the condition in A1 and B2 simultaneously, startup air-conditioning and battery heat, first control valve and the 3rd control valve are closed, second control valve and the 4th control valve are opened, cross valve is heating mode, compressor start, refrigerant first after heat exchanger heat exchange in car again through the water of refrigeration coil heating water tank, then become cryogenic liquid by the second Bidirectional expansion valve, then flow in compressor from the refluxing opening of cross valve after car external heat exchanger heat exchange heat absorption; The outer blower fan of compressor and car according to T water temperature, T interior reality, T inside establishcarry out intelligent frequency modulation; When arbitrary pattern meets stop condition, another pattern is all run according to independent operational mode.
6. the control method of a kind of pure electric automobile battery constant temperature as claimed in claim 5 and air-conditioning system, is characterized in that: auxiliary electrical heater in the also supporting car of heat exchanger in the car in described air conditioning control method; Water tank auxiliary electrical heater is provided with in water tank;
Just auxiliary electrical heater in car is started: 1) compressor operating time was more than 2 minutes when meeting the following conditions simultaneously; 2) the positive continuous service of car inner blower; 3) distance auxiliary electrical heater shut-in time last time is more than 1 minute; 4) in car, the core body temperature of heat exchanger is less than preset value T electricity opens; 5) vehicle interior temperature is less than preset value T interior default; 6.A value is greater than setting value N2, and this N2 is greater than N;
When meeting the following conditions for the moment, in car, auxiliary electrical heater is closed: 1, in car, the core body temperature of heat exchanger is more than or equal to preset value T electricity opens; 2, A value is less than or equal to setting value N2-1; 3, vehicle interior temperature is greater than preset value T interior default+ 1; 4, when heating mode and refrigeration mode switch;
When power brick temperature is lower than T battery min, water temperature is less than or equal to T water temperature maxtime, and run more than 5 minutes under battery heating mode, water tank auxiliary electrical heater starts, when water temperature is more than or equal to T water temperature maxwhen+5, water tank auxiliary electrical heater stops, and systematic evaluation becomes the heating mode of pure air-conditioning.
7. the control method of a kind of pure electric automobile battery constant temperature as claimed in claim 6 and air-conditioning system, is characterized in that: described air conditioning control method is all also provided with defrosting mode under air-conditioning heating pattern, battery heating mode or air-conditioning battery simultaneously heating mode:
The outer real time temperature of setting car is T outer reality, car external heat exchanger core body temperature T outer core, work as T outer reality-T outer coreduring>=setting value N3, and the heating mode of correspondence started defrosting mode more than 30 minutes lower running time, when defrosting starts, the outer blower fan of compressor, car inner blower and car all stops, cross valve switches to refrigeration mode, first control valve and the second control valve are opened, 3rd control valve and the 4th control valve are closed, then compressor start gradually become oepration at full load, car inner blower and the outer blower fan of car still stop, refrigerant runs according to the pure air conditioner refrigerating pattern route of electric air-conditioning, makes the gaseous coolant of HTHP in car external heat exchanger by defrosting; Work as T outer corecontinue for some time more than T outer core minor defrosting mode continuous service stops defrosting when exceeding minimum defrosting time.
8. the control method of a kind of pure electric automobile battery constant temperature as claimed in claim 7 and air-conditioning system, is characterized in that:
Under air-conditioning heating pattern, compressor is according to design temperature T in car inside establish, real time temperature T in car interior realityreal time temperature T outer with car outer realitythe concrete mode of carrying out intelligent frequency-conversion is; Compressor rotary speed is set with fourth gear, again slow to be followed successively by soon first grade, second gear, third gear and fourth speed, compressor is according to T outer realityshi great little carrys out the maximum speed of limit compression machine;
1), T is worked as outer realityduring < 9 DEG C, the maximum speed shelves of compressor are third gear;
2), as 10 DEG C of < T outer realityduring < 12 DEG C, the maximum speed shelves of compressor are third gear;
3), as 13 DEG C of < T outer reality< T outer maxtime, the maximum speed shelves of compressor are second gear;
Under above-mentioned compressor restrictive condition
11), when A >=2, compressor runs with the maximum speed shelves of current energy operational taps;
12), as 0≤A < 2, compressor runs with third gear rotating speed, if a compressor restrictive condition maximum allowable speed is second gear, then runs with second gear rotating speed;
13). as-3 < A < 0, compressor runs with second gear rotating speed;
14). when A≤-3, compressor is out of service;
Under air conditioner refrigerating pattern, compressor carries out the concrete mode of intelligent frequency-conversion according to real time temperature in design temperature, car in car and is:
11), when A1 >=2, compressor third gear rotating speed runs;
12), as 0≤A1 < 2, compressor runs with third gear rotating speed;
13). as-3 < A1 < 0, compressor runs with second gear rotating speed;
14). when A1≤-3, compressor is out of service;
When pure battery heats, according to water temperature T in water tank water temperature, compressor carries out intelligent frequency-conversion, works as T water temperature≤ T water temperature maxtime, compressor third gear rotating speed runs, and works as T water temperature max< T water temperature≤ T water temperature maxwhen+5, compressor second gear rotating speed runs, and works as T water temperature >t water temperature maxwhen+5, compressor stops;
During pure battery refrigeration, according to water temperature T in water tank water temperature, compressor carries out intelligent frequency-conversion, when water temperature T in water tank water temperature> T water temperature minwhen+5, compressor third gear rotating speed runs, and works as T water temperature min< T water temperature≤ T water temperature minwhen+5, compressor second gear rotating speed runs, and works as T water temperature≤ T during water temperature min, compressor stops;
When battery and air-conditioning heat simultaneously, compressor is according to T water temperature, T interior reality, T inside establishcarry out intelligent frequency modulation; When power brick temperature is lower than T battery min, water temperature T water temperature≤ T water temperature max, T interior reality< T inside establishtime, compressor fourth speed rotating speed runs; Work as T water temperature>=T water temperature max, T interior reality=T inside establishtime, compressor second gear rotating speed runs, T interior reality> T inside establishwhen+3, compressor quits work;
When battery and air-conditioning freeze simultaneously, compressor is according to T water temperature, T interior reality, T inside establishcarry out intelligent frequency modulation; When power brick temperature is more than T battery max, water temperature T in water tank water temperature> T water temperature min+ 5, and T interior reality> T inside establishtime, compressor fourth speed rotating speed runs, and works as T water temperature min< T water temperature≤ T water temperature min+ 5, and T interior reality=T inside establishtime, compressor third gear rotating speed runs, and works as T water temperature≤ T during water temperature min, compressor stops.
9. the control method of a kind of pure electric automobile battery constant temperature as claimed in claim 8 and air-conditioning system, is characterized in that:
The control method of this battery constant temperature and air-conditioning system carries out VFC to the outer blower fan of car and car inner blower, and its concrete mode is
During pure air-conditioning heating pattern, the outer blower fan of car carries out frequency conversion according to the temperature outside car, works as T outer realitybe less than or equal to default T outer zero boundaryduring temperature, the outer blower fan of car runs with 100% rotating speed; Work as T outer realitybe greater than default T outer zero boundaryduring temperature, the outer blower fan frequency reducing of car runs with 85% rotating speed; During heating mode, car inner blower can manual adjustments gear or automatically adjust according to the size of A value: when A>=2, car inner blower 100% rotating speed runs; As 0≤A < 2, car inner blower 80% rotating speed runs; As-3 < A < 0, car inner blower 60% rotating speed runs; When A≤-3, car inner blower 60% rotating speed runs;
Pure air conditioner refrigerating pattern outer blower fan of getting off carries out frequency conversion according to car external heat exchanger core body temperature, works as T outer corebe less than default T outer core zero boundarytime, the outer blower fan of car runs with 75% rotating speed; Work as T outer core zero boundary< T outer core< T outer core zero boundarywhen+5, the outer blower fan of car runs with 85% rotating speed; T outer core>=T outer core zero boundarywhen+5, the outer blower fan of car runs with 100% rotating speed; And refrigeration mode get off inner blower can manual adjustments gear or automatically adjust according to the size of A1 value: when A1>=2, car inner blower 100% rotating speed runs; As 0≤A1 < 2, car inner blower 80% rotating speed runs; As-3 < A1 < 0, car inner blower 60% rotating speed runs.
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