CN102310740B - Variable-frequency air conditioner control system for electric automobile - Google Patents
Variable-frequency air conditioner control system for electric automobile Download PDFInfo
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- CN102310740B CN102310740B CN 201110251881 CN201110251881A CN102310740B CN 102310740 B CN102310740 B CN 102310740B CN 201110251881 CN201110251881 CN 201110251881 CN 201110251881 A CN201110251881 A CN 201110251881A CN 102310740 B CN102310740 B CN 102310740B
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Abstract
The invention discloses a variable-frequency air conditioner control system for an electric automobile. The variable-frequency air conditioner control system comprises a control panel, an air conditioner ECU (Electronic Control Unit), a temperature sensor and a VCU (Vehicle Control Unit), wherein the temperature sensor is used for detecting the temperature of the air outlet of an evaporator of the variable-frequency air conditioner of the electric automobile; the control panel is provided with an A/C (Air conditioning) switch for controlling on and off of refrigeration, a heating switch for controlling on and off of heat supply and a temperature adjusting device for setting the refrigerating temperature; and before the air conditioner ECU starts refrigerating or heating, a request is transmitted to the VCU in advance, and the VCU allows the ECU to be started only when the VCU judges that the current battery power of the electric automobile is sufficient, so that the VCU can be used for automatically shutting down an air conditioning system or a PTC (Positive Temperature Coefficient) heater for saving power when the battery power of the electric automobile is insufficient, and the continuation voyage mileage of the automobile is prolonged.
Description
Technical field
The present invention relates to a kind of automobile air conditioner control system, relate in particular to a kind of electronlmobil convertible frequency air-conditioner control system.
Background technology
Automotive air-conditioning system be realize to air in a car compartment freeze, the device of heating, ventilation and air-pollution control.It can reduce the strength at repeated alternation of chaufeur for rider person provides comfortable environment by bus, improves traffic safety.Interior environment system has become weighs whether one of complete sign of automobile function.
Electronlmobil adopts high-tension storage battery power supply, for cutting down the consumption of energy, present electric automobile air-conditioning system mostly adopts variable frequency control, and by air conditioner electronic control unit (ECU, Electronic Control Unit) realize centralized control, this is for guaranteeing that the normal operation of electronlmobil has very important significance.Though and the air-conditioner ECU of present electronlmobil convertible frequency air-conditioner control system also can realize variable frequency control, but it is not subjected to vehicle control device (the Vehicle Control Unit of electronlmobil, VCU) control, cross when low when vehicle body electric power, VCU can not forbid a/c system or ptc heater continues vehicle continuation of the journey mileage with economize on electricity.
Summary of the invention
The object of the present invention is to provide a kind of electronlmobil convertible frequency air-conditioner control system, it can control refrigeration and the heat supply of electronlmobil convertible frequency air-conditioner automatically according to electric weight, with the driving of preferential assurance electronlmobil, prolongs the continuation of the journey mileage.
For achieving the above object, the invention provides a kind of electronlmobil convertible frequency air-conditioner control system comprises: control panel, air-conditioner ECU and for detection of the temperature sensor of the evaporator air outlet temperature of electronlmobil convertible frequency air-conditioner, described control panel is provided with the A/C switch for the refrigeration open and close controlling, be used for the heating switch of heat supply open and close controlling and be used for the register that cryogenic temperature is set, it is characterized in that, the VCU that also comprises electronlmobil, after the closure signal of described A/C switch generation reaches described air-conditioner ECU, when described air-conditioner ECU sends corresponding pwm control signal to the electric frequency conversion compressor of described electronlmobil, also send the refrigeration request signal to described VCU, described VCU judges whether that according to described refrigeration request signal and the current electric weight of described electronlmobil permission drives, output refrigeration enabling signal starts refrigeration to described electric frequency conversion compressor when judging that the current electric weight of described electronlmobil is not less than limit value; After the closure signal of described heating switch generation reaches described air-conditioner ECU, described air-conditioner ECU sends the heat supply request signal to described VCU, described VCU judges whether that according to described heat supply request signal and the current electric weight of described electronlmobil permission drives, output heat supply enabling signal starts heating to the ptc heater of described electronlmobil when judging that the current electric weight of described electronlmobil is not less than described limit value; After described startup refrigeration or startup heating, whether the current electric weight of the described electronlmobil of described VCU real-time judge is lower than described limit value, if be lower than, then closes current in running order electric frequency conversion compressor or ptc heater.
Electronlmobil convertible frequency air-conditioner control system of the present invention, after sending corresponding pwm control signal to described electric frequency conversion compressor, described air-conditioner ECU receives the diagnosis impulse singla of described electric frequency conversion compressor feedback, and judge according to described diagnosis impulse singla whether described electric frequency conversion compressor exists fault, if receive the described diagnosis impulse singla of zero in the unit time, judge that then described electric frequency conversion compressor is normal, if receive one or more described diagnosis impulse singlas in the described unit time, then judge the trouble point according to the described diagnosis number of pulse signals of receiving in the described unit time.
Electronlmobil convertible frequency air-conditioner control system of the present invention, described air-conditioner ECU is the box body that is independent of described control panel.
Electronlmobil convertible frequency air-conditioner control system of the present invention, the frequency of described pwm control signal is 50Hz.
Electronlmobil convertible frequency air-conditioner control system of the present invention, described air-conditioner ECU comprise refrigeration indicating module, heating indicating module, A/D modular converter, microcontroller, PWM and diagnostic module, refrigeration request module and heating request module, wherein,
Described refrigeration indicating module is used for judging whether to satisfy the refrigeration indicated condition according to the on-off signal of the described A/C switch output that receives, if satisfy, then output refrigeration indicator signal is to described microcontroller;
Described heating indicating module is used for judging whether to satisfy the heating indicated condition according to the on-off signal of the described heating switch output that receives, if satisfy, then exports the heat supply indicator signal to described microcontroller;
Described A/D modular converter is used for the simulation design temperature signal transition of described register output is become corresponding digital design temperature signal and is sent to microcontroller;
Described microcontroller, be used for after receiving described refrigeration indicator signal, whether the temperature of judging the evaporator air outlet temperature signal correspondence that described temperature sensor is passed back is higher than 3 ℃ and be lower than the temperature of described digital temperature setting signal correspondence, if, then the difference of the temperature of the described evaporator air outlet temperature signal correspondence temperature corresponding with described digital temperature setting signal being carried out PID regulates, the pwm control signal of output duty ratio corresponding is to described electric frequency conversion compressor, simultaneously, drive described refrigeration request module and send described refrigeration request signal to described VCU, and behind the described pwm control signal of output, receive the diagnosis impulse singla that described electric frequency conversion compressor feeds back, and judge according to described diagnosis impulse singla whether described electric frequency conversion compressor exists fault; After receiving described heating indicator signal, drive described heating request module and send the heat supply request signal to described VCU.
Electronlmobil convertible frequency air-conditioner control system of the present invention also comprises:
Votage control switch, be used for being in the higher-pressure region pressure that working process detects described electronlmobil convertible frequency air-conditioner control system at described electric frequency conversion compressor, when described higher-pressure region pressure is raised to HVT high voltage threshold, disconnect the loop of described A/C switch, when described higher-pressure region pressure drops to low pressure threshold, the loop of closed described A/C switch;
Coolant-temperature switch, be used for being in working process at described ptc heater and detect described ptc heater surface temperature, when described ptc heater surface temperature is raised to high temperature threshold value, disconnect the loop of described heating switch, when described ptc heater surface temperature drops to the low temperature threshold value, the loop of closed described heating switch.
Electronlmobil convertible frequency air-conditioner control system of the present invention, described HVT high voltage threshold is 3.14Mpa, and described low pressure threshold is 0.196Mpa, and described high temperature threshold value is 130 ℃, and described low temperature threshold value is 90 ℃.
Electronlmobil convertible frequency air-conditioner control system of the present invention, when described electronlmobil causes the current electric weight of its battery temporarily to be lower than described limit value because accelerating or climbing, and accelerate or the current electric weight of climbing its battery of back when recovering to surpass described limit value at described electronlmobil, described VCU is restarted pent described electric frequency conversion compressor or described ptc heater before this.
Electronlmobil convertible frequency air-conditioner control system of the present invention, described limit value be described electronlmobil the battery specified electric quantity 10%.
Electronlmobil convertible frequency air-conditioner control system of the present invention, described microcontroller comprise that model is micro controller system and the peripheral circuit thereof of PIC16F917TQFP;
Described refrigeration indicating module comprises resistance R 3, resistance R 4, resistance R 5, resistance R 14 and aerotron Q1, the base stage of aerotron Q1 links to each other with the mouth of described A/C switch by resistance R 3, the grounded emitter of aerotron Q1, resistance R 4 is connected between the base stage and emitter thereof of aerotron Q1, the collecting electrode of aerotron Q1 connects+5V VDD by resistance R 5, and the collecting electrode of aerotron Q1 links to each other with the 3rd pin of described micro controller system by resistance R 14;
Described heating indicating module comprises resistance R 18, resistance R 19, resistance R 20, resistance R 21, diode D6, toggle switch K1 and aerotron Q3, the base stage of aerotron Q3 links to each other with the mouth of described heating switch by resistance R 18, the grounded emitter of aerotron Q3, resistance R 19 is connected between the base stage and emitter thereof of aerotron Q3, the input end of diode D6 links to each other with the collecting electrode of aerotron Q3 by toggle switch K1, the mouth of diode D6 links to each other with the base stage of aerotron Q3 by resistance R 18, the collecting electrode of aerotron Q3 connects+5V VDD by resistance R 20, and the collecting electrode of aerotron Q3 links to each other with the 9th pin of described micro controller system by resistance R 21;
Described A/D modular converter comprises resistance R 8, resistance R 9 and capacitor C 7, one end splice grafting of one end of resistance R 8, an end of resistance R 9 and capacitor C 7 is together as the input end of described A/D modular converter, link to each other with the mouth of described temperature sensor, another termination+5V VDD of resistance R 8, the other end ground connection of capacitor C 7, the other end of resistance R 9 links to each other with the 20th pin of described micro controller system;
Described PWM and diagnostic module comprise resistance R 32, resistance R 30, resistance R 31, resistance R 39, resistance R 40, resistance R 41, resistance R 55, capacitor C 17, aerotron Q4 and aerotron V4, the collecting electrode of aerotron Q4 links to each other with the signal input part of described electric frequency conversion compressor by resistance R 32, the grounded emitter of aerotron Q4, resistance R 31 is connected between the emitter and base stage thereof of aerotron Q4, and the base stage of aerotron Q4 links to each other with the 40th pin of described micro controller system by resistance R 30; The base stage of aerotron V4 links to each other with the signal output part of described electric frequency conversion compressor by resistance R 39, the collecting electrode of aerotron V4 is by resistance R 41 ground connection, capacitor C 17 and resistance R 40 are parallel between the emitter and base stage thereof of aerotron V4, the emitter of aerotron V4 connects+5V VDD, and the collecting electrode of aerotron V4 links to each other with the 15th pin of described micro controller system by resistance R 55;
Described refrigeration request module comprises resistance R 48, resistance R 49, resistance R 50, resistance R 51, resistance R 52, diode D4, diode D5, aerotron Q7 and aerotron V6, the base stage of aerotron Q7 links to each other with the 3rd pin of described micro controller system by resistance R 48, the base stage of aerotron Q7 is by resistance R 49 ground connection, the grounded emitter of aerotron Q7, the collecting electrode of aerotron Q7 links to each other with aerotron V6 base stage by resistance R 50, resistance R 51 is connected between the base stage and emitter thereof of aerotron V6, the emitter of aerotron V6 connects the 12V direct current, the input end of diode D4 links to each other with collecting electrode and the emitter thereof of aerotron V6 with mouth is corresponding respectively, the collecting electrode of aerotron V6 is by parallel resistor R52 and diode D5 ground connection, wherein, the input end grounding of diode D5, the collecting electrode of aerotron V6 links to each other with the signal input part of described VCU;
Described heating request module comprises resistance R 42, resistance R 43, resistance R 44, resistance R 45, resistance R 46, resistance R 47, diode D2, diode D3, aerotron Q6 and aerotron V5, the base stage of aerotron Q6 links to each other with the 35th pin of described micro controller system by resistance R 42, the base stage of aerotron Q6 is by resistance R 43 ground connection, the grounded emitter of aerotron Q6, the collecting electrode of aerotron Q6 links to each other with aerotron V5 base stage by resistance R 44, resistance R 45 is connected between the base stage and emitter thereof of aerotron V5, the emitter of aerotron V5 connects the 12V direct current, the input end of diode D2 links to each other with collecting electrode and the emitter thereof of aerotron V5 with mouth is corresponding respectively, the collecting electrode of aerotron V5 is by parallel resistor R46 and diode D3 ground connection, wherein, the input end grounding of diode D3, the collecting electrode of aerotron V5 links to each other with another signal input part of described VCU by resistance R 47.
In the electronlmobil convertible frequency air-conditioner control system of the present invention, air-conditioner ECU is before enabling refrigeration or heat supply, to obtain permission to VCU in advance, if VCU judges the battery electric quantity of current electronlmobil and allows that refrigeration or heat supply are enabled in side's permission, therefore, when the electronlmobil power shortage, VCU can close a/c system or ptc heater automatically, thereby has saved electric weight, for the continuation of the journey mileage that continues vehicle provides advantage.
Description of drawings
Fig. 1 is the structured flowchart of the electronlmobil convertible frequency air-conditioner control system of one embodiment of the invention;
Fig. 2 is the micro controller system of air-conditioning EUC and the schematic circuit diagram of power unit in the electronlmobil convertible frequency air-conditioner control system among Fig. 1;
Fig. 3 is the schematic circuit diagram of the refrigeration indicating module of air-conditioning EUC part in the electronlmobil convertible frequency air-conditioner control system among Fig. 1;
Fig. 4 is the schematic circuit diagram of the heating indicating module of air-conditioning EUC part in the electronlmobil convertible frequency air-conditioner control system among Fig. 1;
Fig. 5 is the schematic circuit diagram of the A/D modular converter of air-conditioning EUC part in the electronlmobil convertible frequency air-conditioner control system among Fig. 1;
Fig. 6 is the schematic circuit diagram of the PWM of air-conditioning EUC and diagnostic module part in the electronlmobil convertible frequency air-conditioner control system among Fig. 1;
Fig. 7 is the schematic circuit diagram of the refrigeration request module of air-conditioning EUC part in the electronlmobil convertible frequency air-conditioner control system among Fig. 1;
Fig. 8 is the schematic circuit diagram of the heating request module of air-conditioning EUC part in the electronlmobil convertible frequency air-conditioner control system among Fig. 1.
The specific embodiment
Below in conjunction with accompanying drawing the specific embodiment of the present invention is described in detail:
With reference to shown in Figure 1, the electronlmobil convertible frequency air-conditioner control system of present embodiment comprises control panel (not drawing among the figure), air-conditioner ECU 1, the VCU 10 of electronlmobil and for detection of the temperature sensor 6 of the evaporator air outlet temperature of electronlmobil convertible frequency air-conditioner, wherein, control panel is provided with the A/C switch 2 for the refrigeration open and close controlling, the heating switch 4 that is used for the heat supply open and close controlling, votage control switch 3, coolant-temperature switch 5, air quantity switch 8 and the temperature adjustment resistance of setting for cryogenic temperature 7, wherein, A/C switch 2 is connected with votage control switch 3, heating switch 4 is connected with coolant-temperature switch 5, votage control switch 3 is used for being in the higher-pressure region pressure that working process detects electronlmobil convertible frequency air-conditioner control system at electric frequency conversion compressor 9, when higher-pressure region pressure is raised to HVT high voltage threshold's (it is comparatively suitable that test shows that HVT high voltage threshold is set to 3.14Mpa), disconnect the loop of A/C switch 2, when higher-pressure region pressure drops to low pressure threshold (it is comparatively suitable that test shows that low pressure threshold is set to 0.196Mpa), the loop of closed A/C switch 2 again; Coolant-temperature switch 5 is used for being in working process at ptc heater 11 and detects ptc heater 11 surface temperatures, when ptc heater 11 surface temperatures be raised to high temperature threshold value (test show high temperature threshold value be set to 130 ℃ comparatively suitable) time, disconnect the loop of heating switch 4, when ptc heater 11 surface temperatures drop to the low temperature threshold value (test show the low temperature threshold value be set to 90 ℃ comparatively suitable) time, the loop of closed heating switch 4 again, thereby the smooth operation of support system.8 air-out air quantity that are used for regulating evaporator of air quantity switch.
Above-mentioned electronlmobil convertible frequency air-conditioner control system, after the closure signal of A/C switch 2 and votage control switch 3 generations reaches air-conditioner ECU 1, air-conditioner ECU 1 is (comparatively suitable when test shows that pwm frequency signal is 50Hz to the corresponding pwm control signal of electric frequency conversion compressor 9 transmissions of electronlmobil, this compares with hundreds of to the PWM frequency of several kilo hertzs that existing electronlmobil convertible frequency air-conditioner control system adopts mostly, it has realized PWM speed governing more accurately, operation noise and the shockproofness of electric frequency conversion compressor 9 have also been reduced simultaneously, thereby further reduced the energy consumption of electronlmobil convertible frequency air-conditioner control system, be conducive to prolong the continuation of the journey mileage), simultaneously, air-conditioner ECU 1 also sends the refrigeration request signal to VCU 10, VCU 10 judges whether that according to refrigeration request signal and the current electric weight of electronlmobil permission drives, output refrigeration enabling signal starts refrigeration to electric frequency conversion compressor 9 when judging that the current electric weight of electronlmobil is not less than limit value; After the closure signal of heating switch 4 and coolant-temperature switch 5 generations reaches air-conditioner ECU 1 (A/C switch 2 and heating switch 4 can only have a closure simultaneously), air-conditioner ECU 1 sends the heat supply request signal to VCU 10, VCU 10 judges whether that according to heat supply request signal and the current electric weight of electronlmobil permission drives, be not less than limit value by the current electric weight of electronlmobil (the evidence limit value is made as battery specified electric quantity 10% comparatively suitable of electronlmobil when judging, its equilibrium comfort level and the continuation of the journey mileage of automobile) time output heat supply enabling signal is to the ptc heater 11 of electronlmobil, starts heating; After starting refrigeration or starting heating, whether the current electric weight of VCU 10 real-time judge electronlmobils is lower than limit value, if be lower than, then closes current in running order electric frequency conversion compressor 9 or ptc heater 11.Need to prove, when electronlmobil causes the current electric weight of its battery temporarily to be lower than limit value because accelerating or climbing, and accelerate or the current electric weight of climbing its battery of back when recovering to surpass limit value at electronlmobil, VCU 10 will be restarted pent electric frequency conversion compressor 9 or ptc heater 11 before this, and it is worked on.In other words, when electronlmobil in the smooth-ride process, after the current electric weight of its battery temporarily is lower than limit value, no matter after this be smooth running, accelerate operation or the operation of climbing, the current electric weight of its battery all can not recover to surpass limit value, VCU 10 just can not restarted pent electric frequency conversion compressor 9 or ptc heater 11 before this more yet, unless charge.
Above-mentioned air-conditioner ECU 1 has adopted modular design, namely adopted the box body structure that is independent of control panel, therefore be arranged on the control panel with the normal embedding of existing air-conditioner ECU and compare, the air-conditioner ECU 1 of present embodiment can be changed and be keeped in repair when damaging easily, and needn't the integral replacing control panel, thereby have reduced maintenance cost.
Above-mentioned air-conditioner ECU 1 is after sending corresponding pwm control signal to electric frequency conversion compressor 9, it also receives the diagnosis impulse singla of electric frequency conversion compressor 9 feedbacks, and according to diagnosing impulse singla to judge whether electric frequency conversion compressor 9 exists fault, if receive zero diagnosis impulse singla in the unit time, judge that then electric frequency conversion compressor 9 is normal, if receive one or more diagnosis impulse singlas in the unit time, then judge the trouble point according to the diagnosis number of pulse signals of receiving in the unit time, can preestablish by agreement and the trouble point is corresponding with the diagnosis number of pulse signals, for example receive in the unit time that a diagnosis impulse singla is decided to be overheating fault, receive in the unit time that two diagnosis impulse singlas are decided to be under-voltage fault etc.Therefore, the electronlmobil convertible frequency air-conditioner control system of present embodiment has the function that fault detects automatically, is convenient to maintenance and the maintenance of electronlmobil convertible frequency air-conditioner control system.
Continuation is with reference to figure 1, wherein, air-conditioner ECU 1 comprises refrigeration indicating module 102, heating indicating module 104, A/D modular converter 103, micro controller system 101, PWM and diagnostic module 105, refrigeration request module 106 and heating request module 107, wherein, refrigeration indicating module 102 is used for judging whether to satisfy the refrigeration indicated condition according to the on-off signal of A/C switch 2 outputs that receive, if satisfy, then output is freezed indicator signal to micro controller system 101, otherwise does not export.Heating indicating module 104 is used for judging whether to satisfy the heating indicated condition according to the on-off signal of heating switch 4 outputs that receive, if satisfy, then exports the heat supply indicator signal to micro controller system 101, otherwise does not export.A/D modular converter 103 is used for the simulation design temperature signal transition of temperature adjustment resistance 7 outputs is become corresponding digital design temperature signal and is sent to micro controller system 101.Micro controller system 101 is used for after receiving the refrigeration indicator signal, whether the temperature of judging the evaporator air outlet temperature signal correspondence that temperature sensor 6 is passed back is higher than 3 ℃ and be lower than the temperature of digital temperature setting signal correspondence, if, then the difference of the temperature of the evaporator air outlet temperature signal correspondence temperature corresponding with the digital temperature setting signal being carried out PID regulates, the pwm control signal of output duty ratio corresponding is to electric frequency conversion compressor 9, simultaneously, drive refrigeration request module 106 and send the refrigeration request signal to VCU 10, and behind the output pwm control signal, receive the diagnosis impulse singla that electric frequency conversion compressor 9 feeds back, and judge according to the diagnosis impulse singla whether electric frequency conversion compressor 9 exists fault; If the temperature of the evaporator air outlet temperature signal correspondence that temperature sensor 6 is passed back is the temperature that is lower than 3 ℃ or is higher than digital temperature setting signal correspondence, then do not start refrigeration.After receiving the heating indicator signal, drive heating request module 107 and send the heat supply request signal to VCU 10.
With reference to shown in Figure 2, wherein, it is micro controller system and the peripheral circuit thereof of PIC16F917TQFP that micro controller system 101 can adopt model.
In conjunction with Fig. 2 and shown in Figure 3, wherein, refrigeration indicating module 102 comprises resistance R 3, resistance R 4, resistance R 5, resistance R 14 and aerotron Q1, the base stage of aerotron Q1 links to each other with the mouth of A/C switch 2 by resistance R 3, the grounded emitter of aerotron Q1, resistance R 4 is connected between the base stage and emitter thereof of aerotron Q1, and the collecting electrode of aerotron Q1 connects+5V VDD by resistance R 5, and the collecting electrode of aerotron Q1 links to each other with the 3rd pin of micro controller system by resistance R 14.
In conjunction with Fig. 2 and shown in Figure 4, wherein, heating indicating module 104 comprises resistance R 18, resistance R 19, resistance R 20, resistance R 21, diode D6, toggle switch K1 and aerotron Q3, the base stage of aerotron Q3 links to each other by the mouth of resistance R 18 with heating switch 4, the grounded emitter of aerotron Q3, resistance R 19 is connected between the base stage and emitter thereof of aerotron Q3, the input end of diode D6 links to each other with the collecting electrode of aerotron Q3 by toggle switch K1, the mouth of diode D6 links to each other with the base stage of aerotron Q3 by resistance R 18, the collecting electrode of aerotron Q3 connects+5V VDD by resistance R 20, and the collecting electrode of aerotron Q3 links to each other with the 9th pin of micro controller system by resistance R 21.
In conjunction with Fig. 2 and shown in Figure 5, wherein, A/D modular converter 103 comprises resistance R 8, resistance R 9 and capacitor C 7, one end splice grafting of one end of resistance R 8, an end of resistance R 9 and capacitor C 7 is together as the input end of A/D modular converter 103, link to each other with the mouth of temperature sensor 6, another termination+5V VDD of resistance R 8, the other end ground connection of capacitor C 7, the other end of resistance R 9 links to each other with the 20th pin of micro controller system.
In conjunction with Fig. 2 and shown in Figure 6, wherein, PWM and diagnostic module 105 comprise resistance R 32, resistance R 30, resistance R 31, resistance R 39, resistance R 40, resistance R 41, resistance R 55, capacitor C 17, aerotron Q4 and aerotron V4, the collecting electrode of aerotron Q4 links to each other with the signal input part of electric frequency conversion compressor 9 by resistance R 32, the grounded emitter of aerotron Q4, resistance R 31 is connected between the emitter and base stage thereof of aerotron Q4, and the base stage of aerotron Q4 links to each other with the 40th pin of micro controller system by resistance R 30; The base stage of aerotron V4 links to each other with the signal output part of electric frequency conversion compressor 9 by resistance R 39, the collecting electrode of aerotron V4 is by resistance R 41 ground connection, capacitor C 17 and resistance R 40 are parallel between the emitter and base stage thereof of aerotron V4, the emitter of aerotron V4 connects+5V VDD, and the collecting electrode of aerotron V4 links to each other with the 15th pin of micro controller system by resistance R 55.
In conjunction with Fig. 2 and shown in Figure 7, wherein, refrigeration request module 106 comprises resistance R 48, resistance R 49, resistance R 50, resistance R 51, resistance R 52, diode D4, diode D5, aerotron Q7 and aerotron V6, the base stage of aerotron Q7 links to each other with the 3rd pin of micro controller system by resistance R 48, the base stage of aerotron Q7 is by resistance R 49 ground connection, the grounded emitter of aerotron Q7, the collecting electrode of aerotron Q7 links to each other with aerotron V6 base stage by resistance R 50, resistance R 51 is connected between the base stage and emitter thereof of aerotron V6, the emitter of aerotron V6 connects the 12V direct current, the input end of diode D4 links to each other with collecting electrode and the emitter thereof of aerotron V6 with mouth is corresponding respectively, the collecting electrode of aerotron V6 is by parallel resistor R52 and diode D5 ground connection, wherein, the input end grounding of diode D5, the collecting electrode of aerotron V6 links to each other with the signal input part of VCU 10.
In conjunction with Fig. 2 and shown in Figure 8, wherein, heating request module 107 comprises resistance R 42, resistance R 43, resistance R 44, resistance R 45, resistance R 46, resistance R 47, diode D2, diode D3, aerotron Q6 and aerotron V5, the base stage of aerotron Q6 links to each other with the 35th pin of micro controller system by resistance R 42, the base stage of aerotron Q6 is by resistance R 43 ground connection, the grounded emitter of aerotron Q6, the collecting electrode of aerotron Q6 links to each other with aerotron V5 base stage by resistance R 44, resistance R 45 is connected between the base stage and emitter thereof of aerotron V5, the emitter of aerotron V5 connects the 12V direct current, the input end of diode D2 links to each other with collecting electrode and the emitter thereof of aerotron V5 with mouth is corresponding respectively, the collecting electrode of aerotron V5 is by parallel resistor R46 and diode D3 ground connection, wherein, the input end grounding of diode D3, the collecting electrode of aerotron V5 links to each other with another signal input part of VCU10 by resistance R 47.
Above embodiment is described preferred implementation of the present invention; be not that scope of the present invention is limited; design under the prerequisite of spirit not breaking away from the present invention; various distortion and improvement that the common engineering staff in this area make technical scheme of the present invention all should fall in the definite protection domain of claims of the present invention.
Claims (9)
1. electronlmobil convertible frequency air-conditioner control system, comprise: control panel, air-conditioner ECU and for detection of the temperature sensor of the evaporator air outlet temperature of electronlmobil convertible frequency air-conditioner, described control panel is provided with the A/C switch for the refrigeration open and close controlling, be used for the heating switch of heat supply open and close controlling and be used for the register that cryogenic temperature is set, it is characterized in that, the VCU that also comprises electronlmobil, after the closure signal of described A/C switch generation reaches described air-conditioner ECU, when described air-conditioner ECU sends corresponding pwm control signal to the electric frequency conversion compressor of described electronlmobil, also send the refrigeration request signal to described VCU, described VCU judges whether that according to described refrigeration request signal and the current electric weight of described electronlmobil permission drives, output refrigeration enabling signal starts refrigeration to described electric frequency conversion compressor when judging that the current electric weight of described electronlmobil is not less than limit value; After the closure signal of described heating switch generation reaches described air-conditioner ECU, described air-conditioner ECU sends the heat supply request signal to described VCU, described VCU judges whether that according to described heat supply request signal and the current electric weight of described electronlmobil permission drives, output heat supply enabling signal starts heating to the ptc heater of described electronlmobil when judging that the current electric weight of described electronlmobil is not less than described limit value; After described startup refrigeration or startup heating, whether the current electric weight of the described electronlmobil of described VCU real-time judge is lower than described limit value, if be lower than, then closes current in running order electric frequency conversion compressor or ptc heater;
Described air-conditioner ECU comprises refrigeration indicating module, heating indicating module, A/D modular converter, microcontroller, PWM and diagnostic module, refrigeration request module and heating request module, wherein,
Described refrigeration indicating module is used for judging whether to satisfy the refrigeration indicated condition according to the on-off signal of the described A/C switch output that receives, if satisfy, then output refrigeration indicator signal is to described microcontroller;
Described heating indicating module is used for judging whether to satisfy the heating indicated condition according to the on-off signal of the described heating switch output that receives, if satisfy, then exports the heat supply indicator signal to described microcontroller;
Described A/D modular converter is used for the simulation design temperature signal transition of described register output is become corresponding digital design temperature signal and is sent to microcontroller;
Described microcontroller, be used for after receiving described refrigeration indicator signal, whether the temperature of judging the evaporator air outlet temperature signal correspondence that described temperature sensor is passed back is higher than 3 ℃ and be lower than the temperature of described digital temperature setting signal correspondence, if, then the difference of the temperature of the described evaporator air outlet temperature signal correspondence temperature corresponding with described digital temperature setting signal being carried out PID regulates, the pwm control signal of output duty ratio corresponding is to described electric frequency conversion compressor, simultaneously, drive described refrigeration request module and send described refrigeration request signal to described VCU, and behind the described pwm control signal of output, receive the diagnosis impulse singla that described electric frequency conversion compressor feeds back, and judge according to described diagnosis impulse singla whether described electric frequency conversion compressor exists fault; After receiving described heating indicator signal, drive described heating request module and send the heat supply request signal to described VCU.
2. electronlmobil convertible frequency air-conditioner control system according to claim 1, it is characterized in that, after sending corresponding pwm control signal to described electric frequency conversion compressor, described air-conditioner ECU receives the diagnosis impulse singla of described electric frequency conversion compressor feedback, and judge according to described diagnosis impulse singla whether described electric frequency conversion compressor exists fault, if receive the described diagnosis impulse singla of zero in the unit time, judge that then described electric frequency conversion compressor is normal, if receive one or more described diagnosis impulse singlas in the described unit time, then judge the trouble point according to the described diagnosis number of pulse signals of receiving in the described unit time.
3. electronlmobil convertible frequency air-conditioner control system according to claim 1 is characterized in that, described air-conditioner ECU is the box body that is independent of described control panel.
4. electronlmobil convertible frequency air-conditioner control system according to claim 1 is characterized in that, the frequency of described pwm control signal is 50Hz.
5. electronlmobil convertible frequency air-conditioner control system according to claim 1 is characterized in that, also comprises:
Votage control switch, be used for being in the higher-pressure region pressure that working process detects described electronlmobil convertible frequency air-conditioner control system at described electric frequency conversion compressor, when described higher-pressure region pressure is raised to HVT high voltage threshold, disconnect the loop of described A/C switch, when described higher-pressure region pressure drops to low pressure threshold, the loop of closed described A/C switch;
Coolant-temperature switch, be used for being in working process at described ptc heater and detect described ptc heater surface temperature, when described ptc heater surface temperature is raised to high temperature threshold value, disconnect the loop of described heating switch, when described ptc heater surface temperature drops to the low temperature threshold value, the loop of closed described heating switch.
6. electronlmobil convertible frequency air-conditioner control system according to claim 5 is characterized in that, described HVT high voltage threshold is 3.14Mpa, and described low pressure threshold is 0.196Mpa, and described high temperature threshold value is 130 ℃, and described low temperature threshold value is 90 ℃.
7. electronlmobil convertible frequency air-conditioner control system according to claim 1, it is characterized in that, when described electronlmobil causes the current electric weight of its battery temporarily to be lower than described limit value because accelerating or climbing, and accelerate or the current electric weight of climbing its battery of back when recovering to surpass described limit value at described electronlmobil, described VCU is restarted pent described electric frequency conversion compressor or described ptc heater before this.
8. according to claim 1 or 7 described electronlmobil convertible frequency air-conditioner control system, it is characterized in that, described limit value be described electronlmobil the battery specified electric quantity 10%.
9. electronlmobil convertible frequency air-conditioner control system according to claim 1 is characterized in that, described microcontroller comprises that model is micro controller system and the peripheral circuit thereof of PIC16F917TQFP;
Described refrigeration indicating module comprises resistance R 3, resistance R 4, resistance R 5, resistance R 14 and aerotron Q1, the base stage of aerotron Q1 links to each other with the mouth of described A/C switch by resistance R 3, the grounded emitter of aerotron Q1, resistance R 4 is connected between the base stage and emitter thereof of aerotron Q1, the collecting electrode of aerotron Q1 connects+5V VDD by resistance R 5, and the collecting electrode of aerotron Q1 links to each other with the 3rd pin of described micro controller system by resistance R 14;
Described heating indicating module comprises resistance R 18, resistance R 19, resistance R 20, resistance R 21, diode D6, toggle switch K1 and aerotron Q3, the base stage of aerotron Q3 links to each other with the mouth of described heating switch by resistance R 18, the grounded emitter of aerotron Q3, resistance R 19 is connected between the base stage and emitter thereof of aerotron Q3, the input end of diode D6 links to each other with the collecting electrode of aerotron Q3 by toggle switch K1, the mouth of diode D6 links to each other with the base stage of aerotron Q3 by resistance R 18, the collecting electrode of aerotron Q3 connects+5V VDD by resistance R 20, and the collecting electrode of aerotron Q3 links to each other with the 9th pin of described micro controller system by resistance R 21;
Described A/D modular converter comprises resistance R 8, resistance R 9 and capacitor C 7, one end splice grafting of one end of resistance R 8, an end of resistance R 9 and capacitor C 7 is together as the input end of described A/D modular converter, link to each other with the mouth of described temperature sensor, another termination+5V VDD of resistance R 8, the other end ground connection of capacitor C 7, the other end of resistance R 9 links to each other with the 20th pin of described micro controller system;
Described PWM and diagnostic module comprise resistance R 32, resistance R 30, resistance R 31, resistance R 39, resistance R 40, resistance R 41, resistance R 55, capacitor C 17, aerotron Q4 and aerotron V4, the collecting electrode of aerotron Q4 links to each other with the signal input part of described electric frequency conversion compressor by resistance R 32, the grounded emitter of aerotron Q4, resistance R 31 is connected between the emitter and base stage thereof of aerotron Q4, and the base stage of aerotron Q4 links to each other with the 40th pin of described micro controller system by resistance R 30; The base stage of aerotron V4 links to each other with the signal output part of described electric frequency conversion compressor by resistance R 39, the collecting electrode of aerotron V4 is by resistance R 41 ground connection, capacitor C 17 and resistance R 40 are parallel between the emitter and base stage thereof of aerotron V4, the emitter of aerotron V4 connects+5V VDD, and the collecting electrode of aerotron V4 links to each other with the 15th pin of described micro controller system by resistance R 55;
Described refrigeration request module comprises resistance R 48, resistance R 49, resistance R 50, resistance R 51, resistance R 52, diode D4, diode D5, aerotron Q7 and aerotron V6, the base stage of aerotron Q7 links to each other with the 3rd pin of described micro controller system by resistance R 48, the base stage of aerotron Q7 is by resistance R 49 ground connection, the grounded emitter of aerotron Q7, the collecting electrode of aerotron Q7 links to each other with aerotron V6 base stage by resistance R 50, resistance R 51 is connected between the base stage and emitter thereof of aerotron V6, the emitter of aerotron V6 connects the 12V direct current, the input end of diode D4 links to each other with collecting electrode and the emitter thereof of aerotron V6 with mouth is corresponding respectively, the collecting electrode of aerotron V6 is by parallel resistor R52 and diode D5 ground connection, wherein, the input end grounding of diode D5, the collecting electrode of aerotron V6 links to each other with the signal input part of described VCU;
Described heating request module comprises resistance R 42, resistance R 43, resistance R 44, resistance R 45, resistance R 46, resistance R 47, diode D2, diode D3, aerotron Q6 and aerotron V5, the base stage of aerotron Q6 links to each other with the 35th pin of described micro controller system by resistance R 42, the base stage of aerotron Q6 is by resistance R 43 ground connection, the grounded emitter of aerotron Q6, the collecting electrode of aerotron Q6 links to each other with aerotron V5 base stage by resistance R 44, resistance R 45 is connected between the base stage and emitter thereof of aerotron V5, the emitter of aerotron V5 connects the 12V direct current, the input end of diode D2 links to each other with collecting electrode and the emitter thereof of aerotron V5 with mouth is corresponding respectively, the collecting electrode of aerotron V5 is by parallel resistor R46 and diode D3 ground connection, wherein, the input end grounding of diode D3, the collecting electrode of aerotron V5 links to each other with another signal input part of described VCU by resistance R 47.
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| CN 201110251881 CN102310740B (en) | 2011-08-29 | 2011-08-29 | Variable-frequency air conditioner control system for electric automobile |
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| CN102673345A (en) * | 2012-05-24 | 2012-09-19 | 山东龙都瑞麟祥机电股份有限公司 | Intelligent air-conditioning control system for electric automobile |
| CN102922970A (en) * | 2012-11-29 | 2013-02-13 | 上海威乐汽车空调器有限公司 | Automobile air-conditioner control method |
| CN103061993B (en) * | 2012-12-20 | 2015-09-09 | 北车风电有限公司 | A kind of for regulating the central air-conditioning system of wind power generating set temperature |
| CN104596165A (en) * | 2014-12-31 | 2015-05-06 | 曙光信息产业(北京)有限公司 | Air conditioning system |
| CN104613614A (en) * | 2015-01-28 | 2015-05-13 | 柳州市二和汽车零部件有限公司 | Intelligent control system for electric car interior environment |
| CN105346354B (en) * | 2015-10-27 | 2018-05-04 | 北京新能源汽车股份有限公司 | Air conditioning system of pure electric vehicle and control method |
| CN105383263B (en) * | 2015-11-20 | 2019-04-23 | 北汽福田汽车股份有限公司 | Vehicle heating system and its control method and vehicle |
| CN105818640A (en) * | 2016-04-01 | 2016-08-03 | 浙江双荣汽车空调制造有限公司 | Variable frequency air conditioner system for electric automobile |
| CN106080101B (en) * | 2016-06-16 | 2018-03-30 | 美的集团武汉制冷设备有限公司 | The control method and mounted air conditioner system of mounted air conditioner system |
| CN106274361A (en) * | 2016-08-27 | 2017-01-04 | 重庆瑞阳科技股份有限公司 | A kind of air-conditioning heating control method for electric automobile and system |
| CN106335345A (en) * | 2016-09-30 | 2017-01-18 | 芜湖豫新世通汽车空调有限公司 | Air-exhaust adjusting device of automobile air conditioner |
| CN106965642A (en) * | 2017-01-26 | 2017-07-21 | 柳州延龙汽车有限公司 | On-board air conditioner driving method of the electric automobile based on entire car controller |
| CN108562020B (en) * | 2018-04-23 | 2021-08-27 | 广东美的暖通设备有限公司 | Air conditioner, control method thereof, and computer-readable storage medium |
| CN110254163A (en) * | 2019-05-29 | 2019-09-20 | 佛山市中格威电子有限公司 | A kind of new-energy automobile variable frequency air-conditioner controller and its control method |
| CN110549822B (en) * | 2019-10-15 | 2024-07-26 | 重庆美瑞特空调工程研究院有限公司 | Power-adjustable automobile air conditioner refrigerating and heating selection circuit |
| CN111301100B (en) * | 2020-02-26 | 2021-11-26 | 重庆小康工业集团股份有限公司 | Vehicle thermal management method and device for extended-range vehicle |
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