CN102310740A - 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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- CN102310740A CN102310740A CN201110251881A CN201110251881A CN102310740A CN 102310740 A CN102310740 A CN 102310740A CN 201110251881 A CN201110251881 A CN 201110251881A CN 201110251881 A CN201110251881 A CN 201110251881A CN 102310740 A CN102310740 A CN 102310740A
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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 driver fatigue intensity for rider person provides comfortable environment by bus, improves traffic safety.Whether complete interior environment system has become weighs one of automobile function sign.
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) realization 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 does not receive 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 with the driving of preferential assurance electronlmobil, prolong the continuation of the journey mileage according to the refrigeration and the heat supply of electric weight automatic guidance electronlmobil convertible frequency air-conditioner.
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 being used to detects the temperature sensor of the evaporator air outlet temperature of electronlmobil convertible frequency air-conditioner; Said control panel be provided with the open and close controlling that is used to freeze the A/C switch, 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 is after the closure signal of said A/C switch generation reaches said air-conditioner ECU, when said air-conditioner ECU is sent cooresponding pwm control signal to the electric frequency conversion compressor of said electronlmobil; Also send the refrigeration request signal to said VCU; Said VCU judges whether that according to said refrigeration request signal and the current electric weight of said electronlmobil permission drives, and output refrigeration enabling signal starts refrigeration to said electric frequency conversion compressor when judging that the current electric weight of said electronlmobil is not less than limit value; After the closure signal of said heating switch generation reaches said air-conditioner ECU; Said air-conditioner ECU is sent the heat supply request signal to said VCU; Said VCU judges whether that according to said heat supply request signal and the current electric weight of said electronlmobil permission drives; The ptc heater of output heat supply enabling signal to said electronlmobil starts heating when judging that the current electric weight of said electronlmobil is not less than said limit value; After said startup refrigeration or startup heating, whether the current electric weight of the said electronlmobil of said VCU real-time judge is lower than said 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 cooresponding pwm control signal to said electric frequency conversion compressor; Said air-conditioner ECU receives the diagnosis impulse singla of said electric frequency conversion compressor feedback; And judge according to said diagnosis impulse singla whether said electric frequency conversion compressor exists fault, if receive the said diagnosis impulse singla of zero in the unit time, judge that then said electric frequency conversion compressor is normal; If receive one or more said diagnosis impulse singlas in the said unit time, then judge the trouble point according to the said diagnosis number of pulse signals of receiving in the said unit time.
Electronlmobil convertible frequency air-conditioner control system of the present invention, said air-conditioner ECU is the box body that is independent of said control panel.
Electronlmobil convertible frequency air-conditioner control system of the present invention, the frequency of said pwm control signal is 50Hz.
Electronlmobil convertible frequency air-conditioner control system of the present invention, said 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,
Said refrigeration indicating module is used for judging whether to satisfy the refrigeration indicated condition according to the on-off signal of the said A/C switch output that receives, if satisfy, then output refrigeration indicator signal is to said microcontroller;
Said heating indicating module is used for judging whether to satisfy the heating indicated condition according to the on-off signal of the said heating switch output that receives, if satisfy, then exports heat supply indicator signal to said microcontroller;
Said A/D modular converter is used for the simulation design temperature signal transition of said register output is become cooresponding digital design temperature signal and is sent to microcontroller;
Said microcontroller; Be used for after receiving said refrigeration indicator signal; Judge whether the cooresponding temperature of evaporator air outlet temperature signal that said temperature sensor is passed back is higher than 3 ℃ and be lower than the cooresponding temperature of said digital temperature setting signal; If then the difference of said cooresponding temperature of evaporator air outlet temperature signal and the cooresponding temperature of said digital temperature setting signal is carried out PID and regulates, pwm control signal to the said electric frequency conversion compressor of output duty ratio corresponding; Simultaneously; Drive said refrigeration request module and send said refrigeration request signal, and behind the said pwm control signal of output, receive the diagnosis impulse singla of said electric frequency conversion compressor feedback, and judge according to said diagnosis impulse singla whether said electric frequency conversion compressor exists fault to said VCU; After receiving said heating indicator signal, drive said heating request module and send the heat supply request signal to said 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 said electronlmobil convertible frequency air-conditioner control system at said electric frequency conversion compressor; When said higher-pressure region pressure is raised to HVT high voltage threshold; Break off the loop of said A/C switch, when said higher-pressure region pressure drops to low pressure threshold, the loop of closed said A/C switch;
Coolant-temperature switch; Be used for being in working process and detect said ptc heater surface temperature at said ptc heater; When said ptc heater surface temperature is raised to high temperature threshold value; Break off the loop of said heating switch, when said ptc heater surface temperature drops to the low temperature threshold value, the loop of closed said heating switch.
Electronlmobil convertible frequency air-conditioner control system of the present invention, said HVT high voltage threshold is 3.14Mpa, and said low pressure threshold is 0.196Mpa, and said high temperature threshold value is 130 ℃, and said low temperature threshold value is 90 ℃.
Electronlmobil convertible frequency air-conditioner control system of the present invention; When said electronlmobil causes the current electric weight of its battery temporarily to be lower than said limit value because of quickening or climbing; And quicken or the current electric weight of climbing its battery of back when recovering to surpass said limit value at said electronlmobil, said VCU is restarted pent before this said electric frequency conversion compressor or said ptc heater.
Electronlmobil convertible frequency air-conditioner control system of the present invention, said limit value be said electronlmobil the battery specified electric quantity 10%.
Electronlmobil convertible frequency air-conditioner control system of the present invention, said microcontroller comprise that model is micro controller system and the peripheral circuit thereof of PIC16F917TQFP;
Said 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 said A/C switch through 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 through resistance R 5, and the collecting electrode of aerotron Q1 links to each other with the 3rd pin of said micro controller system through resistance R 14;
Said 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 said heating switch through resistance R 18; The grounded emitter of aerotron Q3; Resistance R 19 is connected between the base stage and emitter thereof of aerotron Q3, and the input end of diode D6 links to each other with the collecting electrode of aerotron Q3 through toggle switch K1, and the mouth of diode D6 links to each other with the base stage of aerotron Q3 through resistance R 18; The collecting electrode of aerotron Q3 connects+5V VDD through resistance R 20, and the collecting electrode of aerotron Q3 links to each other with the 9th pin of said micro controller system through resistance R 21;
Said 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 said A/D modular converter; Link to each other with the mouth of said 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 said micro controller system;
Said 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 said electric frequency conversion compressor through 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 said micro controller system through resistance R 30; The base stage of aerotron V4 links to each other with the signal output part of said electric frequency conversion compressor through resistance R 39; The collecting electrode of aerotron V4 is through 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 said micro controller system through resistance R 55;
Said 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 said micro controller system through resistance R 48; The base stage of aerotron Q7 is through 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 through resistance R 50, and 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, and the collecting electrode of aerotron V6 is through 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 said VCU;
Said 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 said micro controller system through resistance R 42; The base stage of aerotron Q6 is through 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 through resistance R 44, and 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, and the collecting electrode of aerotron V5 is through 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 said VCU through resistance R 47.
In the electronlmobil convertible frequency air-conditioner control system of the present invention, air-conditioner ECU will be obtained permission to VCU in advance before launching refrigeration or heat supply; If VCU judges the battery electric quantity of current electronlmobil and allows that refrigeration or heat supply are launched in side's permission, therefore; When the electronlmobil power shortage; VCU ability SELF CL a/c system or ptc heater, thus electric weight saved, 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
Be described in detail below in conjunction with the accompanying drawing specific embodiments of the invention:
With reference to shown in Figure 1; The electronlmobil convertible frequency air-conditioner control system of present embodiment comprises the VCU 10 of control panel (not drawing among the figure), air-conditioner ECU 1, electronlmobil and is used to detect the temperature sensor 6 of the evaporator air outlet temperature of electronlmobil convertible frequency air-conditioner; Wherein, Control panel is provided be used to freeze the A/C switch 2 of 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 be used for the temperature adjustment resistance 7 that cryogenic temperature is set; Wherein, A/C switch 2 is connected with votage control switch 3, and heating switch 4 is connected with coolant-temperature switch 5, and 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); Break off 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 once more A/C switch 2; 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; Break off 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 once more heating switch 4, thereby the smooth operation of support system.8 on air quantity switch is used to regulate the air-out air quantity of evaporator.
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; (comparatively suitable when test shows that pwm frequency signal is 50Hz, compare, and it has realized PWM speed governing more accurately by this PWM frequency with hundreds of to several kilo hertzs that existing electronlmobil convertible frequency air-conditioner control system adopts mostly to the cooresponding pwm control signal of electric frequency conversion compressor 9 transmissions of electronlmobil for air-conditioner ECU 1; The 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, helped prolonging the continuation of the journey mileage), simultaneously; Air-conditioner ECU 1 is also sent 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, and output refrigeration enabling signal to electric frequency conversion compressor 9 starts refrigeration 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 can only have a closure simultaneously with heating switch 4); Air-conditioner ECU 1 is sent 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; The comfort level and continuation of the journey mileage of automobile that it is balanced) ptc heater 11 of output heat supply enabling signal to electronlmobil starts heating the time; 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 of quickening or climbing; And quicken 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 before this electric frequency conversion compressor 9 or ptc heater 11, 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 is smooth running, quickens operation or climbing operation, the current electric weight of its battery all can not recover to surpass limit value; VCU 10 just can not restarted pent before this electric frequency conversion compressor 9 or ptc heater 11 more yet, only if charge.
Above-mentioned air-conditioner ECU 1 has adopted modular design; Promptly 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 keeped in repair when damaging easily, and needn't the integral replacing control panel, thereby has reduced maintenance cost.
Above-mentioned air-conditioner ECU 1 is after sending cooresponding 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 through 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 or the like.Therefore, the electronlmobil convertible frequency air-conditioner control system of present embodiment has the function that fault detects automatically, is convenient to the 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 the A/C switch that receives 2 outputs; If satisfy, then output refrigeration indicator signal to micro controller system 101, otherwise do not export.Heating indicating module 104 is used for judging whether to satisfy the heating indicated condition according to the on-off signal of the heating switch that receives 4 outputs, if satisfy, then exports 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 cooresponding 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; Judge whether the cooresponding temperature of evaporator air outlet temperature signal that temperature sensor 6 is passed back is higher than 3 ℃ and be lower than the cooresponding temperature of digital temperature setting signal; If; Then the difference of cooresponding temperature of evaporator air outlet temperature signal and the cooresponding temperature of digital temperature setting signal being carried out PID regulates; Pwm control signal to the electric frequency conversion compressor 9 of output duty ratio corresponding simultaneously, drives refrigeration request module 106 and sends 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 cooresponding temperature of evaporator air outlet temperature signal that temperature sensor 6 is passed back is to be lower than 3 ℃ or be higher than the cooresponding temperature of digital temperature setting signal, 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, and the base stage of aerotron Q1 links to each other with the mouth of A/C switch 2 through 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 through resistance R 5, and the collecting electrode of aerotron Q1 links to each other with the 3rd pin of micro controller system through 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 through the mouth of resistance R 18 with heating switch 4, the grounded emitter of aerotron Q3, and 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 through toggle switch K1; The mouth of diode D6 links to each other with the base stage of aerotron Q3 through resistance R 18, and the collecting electrode of aerotron Q3 connects+5V VDD through resistance R 20, and the collecting electrode of aerotron Q3 links to each other with the 9th pin of micro controller system through 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, and an end splice grafting of an 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 through resistance R 32; The grounded emitter of aerotron Q4, resistance R 31 are 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 through resistance R 30; The base stage of aerotron V4 links to each other with the signal output part of electric frequency conversion compressor 9 through resistance R 39; The collecting electrode of aerotron V4 is through 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 through 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, and the base stage of aerotron Q7 links to each other with the 3rd pin of micro controller system through resistance R 48; The base stage of aerotron Q7 is through 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 through resistance R 50, and 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, and the collecting electrode of aerotron V6 is through 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, and the base stage of aerotron Q6 links to each other with the 35th pin of micro controller system through resistance R 42; The base stage of aerotron Q6 is through 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 through resistance R 44, and 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, and the collecting electrode of aerotron V5 is through 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 through resistance R 47.
Above embodiment describes 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 (10)
1. electronlmobil convertible frequency air-conditioner control system; Comprise: control panel, air-conditioner ECU and being used to detects the temperature sensor of the evaporator air outlet temperature of electronlmobil convertible frequency air-conditioner; Said control panel be provided with the open and close controlling that is used to freeze the A/C switch, 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 is after the closure signal of said A/C switch generation reaches said air-conditioner ECU, when said air-conditioner ECU is sent cooresponding pwm control signal to the electric frequency conversion compressor of said electronlmobil; Also send the refrigeration request signal to said VCU; Said VCU judges whether that according to said refrigeration request signal and the current electric weight of said electronlmobil permission drives, and output refrigeration enabling signal starts refrigeration to said electric frequency conversion compressor when judging that the current electric weight of said electronlmobil is not less than limit value; After the closure signal of said heating switch generation reaches said air-conditioner ECU; Said air-conditioner ECU is sent the heat supply request signal to said VCU; Said VCU judges whether that according to said heat supply request signal and the current electric weight of said electronlmobil permission drives; The ptc heater of output heat supply enabling signal to said electronlmobil starts heating when judging that the current electric weight of said electronlmobil is not less than said limit value; After said startup refrigeration or startup heating, whether the current electric weight of the said electronlmobil of said VCU real-time judge is lower than said limit value, if be lower than, then closes current in running order electric frequency conversion compressor or ptc heater.
2. electronlmobil convertible frequency air-conditioner control system according to claim 1; It is characterized in that; After sending cooresponding pwm control signal to said electric frequency conversion compressor, said air-conditioner ECU receives the diagnosis impulse singla of said electric frequency conversion compressor feedback, and judges according to said diagnosis impulse singla whether said electric frequency conversion compressor exists fault; If receive the said diagnosis impulse singla of zero in the unit time; Judge that then said electric frequency conversion compressor is normal,, then judge the trouble point according to the said diagnosis number of pulse signals of receiving in the said unit time if receive one or more said diagnosis impulse singlas in the said unit time.
3. electronlmobil convertible frequency air-conditioner control system according to claim 1 is characterized in that said air-conditioner ECU is the box body that is independent of said control panel.
4. electronlmobil convertible frequency air-conditioner control system according to claim 1 is characterized in that the frequency of said pwm control signal is 50Hz.
5. electronlmobil convertible frequency air-conditioner control system according to claim 2; It is characterized in that; Said 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
Said refrigeration indicating module is used for judging whether to satisfy the refrigeration indicated condition according to the on-off signal of the said A/C switch output that receives, if satisfy, then output refrigeration indicator signal is to said microcontroller;
Said heating indicating module is used for judging whether to satisfy the heating indicated condition according to the on-off signal of the said heating switch output that receives, if satisfy, then exports heat supply indicator signal to said microcontroller;
Said A/D modular converter is used for the simulation design temperature signal transition of said register output is become cooresponding digital design temperature signal and is sent to microcontroller;
Said microcontroller; Be used for after receiving said refrigeration indicator signal; Judge whether the cooresponding temperature of evaporator air outlet temperature signal that said temperature sensor is passed back is higher than 3 ℃ and be lower than the cooresponding temperature of said digital temperature setting signal; If then the difference of said cooresponding temperature of evaporator air outlet temperature signal and the cooresponding temperature of said digital temperature setting signal is carried out PID and regulates, pwm control signal to the said electric frequency conversion compressor of output duty ratio corresponding; Simultaneously; Drive said refrigeration request module and send said refrigeration request signal, and behind the said pwm control signal of output, receive the diagnosis impulse singla of said electric frequency conversion compressor feedback, and judge according to said diagnosis impulse singla whether said electric frequency conversion compressor exists fault to said VCU; After receiving said heating indicator signal, drive said heating request module and send the heat supply request signal to said VCU.
6. 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 said electronlmobil convertible frequency air-conditioner control system at said electric frequency conversion compressor; When said higher-pressure region pressure is raised to HVT high voltage threshold; Break off the loop of said A/C switch, when said higher-pressure region pressure drops to low pressure threshold, the loop of closed said A/C switch;
Coolant-temperature switch; Be used for being in working process and detect said ptc heater surface temperature at said ptc heater; When said ptc heater surface temperature is raised to high temperature threshold value; Break off the loop of said heating switch, when said ptc heater surface temperature drops to the low temperature threshold value, the loop of closed said heating switch.
7. electronlmobil convertible frequency air-conditioner control system according to claim 6 is characterized in that said HVT high voltage threshold is 3.14Mpa, and said low pressure threshold is 0.196Mpa, and said high temperature threshold value is 130 ℃, and said low temperature threshold value is 90 ℃.
8. electronlmobil convertible frequency air-conditioner control system according to claim 1; It is characterized in that; When said electronlmobil causes the current electric weight of its battery temporarily to be lower than said limit value because of quickening or climbing; And quicken or the current electric weight of climbing its battery of back when recovering to surpass said limit value at said electronlmobil, said VCU is restarted pent before this said electric frequency conversion compressor or said ptc heater.
9. according to claim 1 or 8 described electronlmobil convertible frequency air-conditioner control system, it is characterized in that, said limit value be said electronlmobil the battery specified electric quantity 10%.
10. electronlmobil convertible frequency air-conditioner control system according to claim 5 is characterized in that, said microcontroller comprises that model is micro controller system and the peripheral circuit thereof of PIC16F917TQFP;
Said 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 said A/C switch through 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 through resistance R 5, and the collecting electrode of aerotron Q1 links to each other with the 3rd pin of said micro controller system through resistance R 14;
Said 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 said heating switch through resistance R 18; The grounded emitter of aerotron Q3; Resistance R 19 is connected between the base stage and emitter thereof of aerotron Q3, and the input end of diode D6 links to each other with the collecting electrode of aerotron Q3 through toggle switch K1, and the mouth of diode D6 links to each other with the base stage of aerotron Q3 through resistance R 18; The collecting electrode of aerotron Q3 connects+5V VDD through resistance R 20, and the collecting electrode of aerotron Q3 links to each other with the 9th pin of said micro controller system through resistance R 21;
Said 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 said A/D modular converter; Link to each other with the mouth of said 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 said micro controller system;
Said 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 said electric frequency conversion compressor through 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 said micro controller system through resistance R 30; The base stage of aerotron V4 links to each other with the signal output part of said electric frequency conversion compressor through resistance R 39; The collecting electrode of aerotron V4 is through 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 said micro controller system through resistance R 55;
Said 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 said micro controller system through resistance R 48; The base stage of aerotron Q7 is through 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 through resistance R 50, and 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, and the collecting electrode of aerotron V6 is through 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 said VCU;
Said 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 said micro controller system through resistance R 42; The base stage of aerotron Q6 is through 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 through resistance R 44, and 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, and the collecting electrode of aerotron V5 is through 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 said VCU through resistance R 47.
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