CN101875290A - Air conditioning system and control method - Google Patents
Air conditioning system and control method Download PDFInfo
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- CN101875290A CN101875290A CN2009101071713A CN200910107171A CN101875290A CN 101875290 A CN101875290 A CN 101875290A CN 2009101071713 A CN2009101071713 A CN 2009101071713A CN 200910107171 A CN200910107171 A CN 200910107171A CN 101875290 A CN101875290 A CN 101875290A
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Abstract
The invention provides an air conditioning system and a control method. The system comprises an evaporator, a compressor, a blower, a temperature sensor, an air conditioning control unit, an air conditioning driving unit and a CAN bus, wherein the air conditioning control unit is connected with the evaporator, the blower and the temperature sensor respectively; the air conditioning driving unit is connected with the compressor; and the air conditioning control unit obtains a gear output value of the compressor according to an actual temperature value of the evaporator detected by the temperature sensor and controls the air conditioning driving unit to drive the compressor to work through the CAN bus. Due to the adoption of the structure and the control method of the air conditioning system, the rotation speed of the compressor meets the requirements of no evaporator protection, and meets the refrigerating requirement of a user along with the temperature adjustment of the evaporator and the user cannot feel abnormal protection of the air conditioning compressor, and the low rotation speed of the compressor can also effectively save the energy, reduce the noise and the vibration and improve the comfort of drivers.
Description
Technical field
The present invention relates to a kind of a/c system and control method, particularly a kind of air conditioning system for electric car and control method.
Background technology
Nowadays, interior environment system all is housed on the common vehicle, the air-conditioning of tradition fuel vehicle need be under the drive of driving engine could normal operation, also have and making operation of air conditioner be freezed by speed belt drive compressor operation, and making of this traditional air-conditioner control system brings comfortable when driving to people and convenient, but also brought some problems of a/c system simultaneously.In the work of traditional fuel vehicle a/c system, at first must open driving engine, award by air-conditioning control module detection Current Temperatures or people's M/C then and open refrigeration, conditioning control unit can be given an order its air-conditioning compressor speed belt is linked with driving engine when opening refrigeration, thereby make driving engine drive process of compressor rotation, thereby reach the effect of refrigeration by driving belt pulley.But can cause inconvenience and energy dissipation like this, because belt pulley is a physical construction, can't determine the current rotating speed of compressor, and the rotating speed of compression can be determined according to the rotating speed of driving engine, vehicle in the process of moving with stopped process in compressor rotary speed also different.Make compressor rotary speed and refrigeration be controlled by the speed of a motor vehicle like this, turn of engine is fast more, and compressor rotates also just fast more, and the height pressure reduction of foundation is big, and it is many more to do work, and air conditioner refrigerating is powerful approximately.Have a driving engine behind the air-conditioning and can operate in a belt speed state and when vehicle does not start, have to open, to keep the running and the refrigeration of compressor with belt speed, make big energy all be used for engine running and gone, and the actual rotation compressor does not need to consume so much energy.
Prior art discloses a kind of a/c system and control method, described as shown in Figure 1 a/c system comprises power supply device, motor, refrigerating compressor, condenser, electric expansion valve, evaporator, control unit and temperature sensor, described power supplier provides power supply to motor, the work of driven by motor refrigerating compressor, described refrigerating compressor, condenser, electric expansion valve and evaporator form refrigerating circuit successively, described control unit is located between power supply device and the motor, the power supply of power supply device output offers motor by control unit, the temperature sensor senses vehicle interior temperature also sends a signal to control unit, control unit control rotating speed of motor.Though having solved, above-mentioned prior art adopts the too much defective of electrical motor power consumption; but so there is the another one problem in the people; when thermostatic control; if owing to weather reason ambient temperature is not too hot; this time, compressor cooling usually made the air outlet temperature very low; be in the consideration of the low excessively a/c system that needs protection of temperature; evaporator temperature sensor can occur and cross the problem of low protection; the air-conditioning control module can detect evaporator temperature and cross when hanging down; can provide the operation that stops the air-conditioning compressor running, make compressor stop.The blowing engine air quantity does not continue air-out owing to continue refrigeration but compressor stops later, the very fast evaporator temperature that can make again of heat exchange raises fast, and at this moment the air-conditioning control module can detect the normally satisfied compressor condition of opening of evaporator temperature, can provide the compressor open operation.Opening finisher again can very fast protection, makes compressor open for a moment, the situation of for a moment stopping, if the compressor noise slightly the large user can feel this high frequent start and stop, and low, extremely unstable when high during the air outlet temperature traverse, make the passenger feel comfortable inadequately.
Summary of the invention
To detect evaporator and vary with temperature and the evaporator protection phenomenon occurs and cause the high frequent start and stop to make the passenger feel comfortable inadequately problem in order to solve in the prior art, the invention provides a kind of a/c system and control method.
A kind of a/c system provided by the invention, comprise evaporator, compressor, blowing engine and temperature sensor, also comprise conditioning control unit, air-conditioning driver element and CAN bus, described conditioning control unit connects evaporator, blowing engine and temperature sensor respectively, described air-conditioning driver element connects compressor, the evaporator actual temperature value that described conditioning control unit detects according to temperature sensor, draw the gear output valve of compressor, and by the described air-conditioning drive unit drives of the total line control of described CAN compressor operating.
The present invention also comprises a kind of control method of the above a/c system, may further comprise the steps:
Temperature sensor detects the evaporator actual temperature, and sends a signal to conditioning control unit;
Described control unit receives the evaporator actual temperature value, with the inner setting temperature value that is stored in the control unit;
Described conditioning control unit carries out the proportional integral (PI) computing to this temperature gap and obtains the gear output valve;
Conditioning control unit is exported to the air-conditioning driver element with compressor gear output valve, air-conditioning driver element control compressor operating.
And a/c system of the present invention is independent; can realize proposing under the situation of speed governing a kind of structure and control method of air-conditioning; make compressor rotary speed along with evaporator temperature is regulated; compressor rotary speed was accelerated when temperature was too high; and temperature is crossed when low rotating speed and is restrained; satisfied and evaporator protection neither can occur the situation that can satisfy user refrigeration is arranged; allow the imperceptible air-conditioning compressor abnormal protection of user; and compressor rotary speed is low can also the actv. conserve energy; reduce noise and vibration, improved the comfort level that people drive.
Description of drawings
Fig. 1 is the a/c system structural representation of an embodiment of the present invention;
Fig. 2 is the a/c system control method diagram of circuit of an embodiment of the present invention;
Fig. 3 is the a/c system control method diagram of circuit of an embodiment of the present invention.
The specific embodiment
Describe the present invention in detail below with reference to accompanying drawing.
As shown in Figure 1, the invention provides a kind of a/c system, comprise evaporator 3, compressor 7, blowing engine 5 and temperature sensor 4, also comprise conditioning control unit 1, air-conditioning driver element 2 and CAN bus 8, described conditioning control unit 1 connects evaporator 3, blowing engine 5 and temperature sensor 4 respectively, described air-conditioning driver element 2 connects compressor 7, evaporator 3 actual temperature value that described conditioning control unit 1 detects according to temperature sensor 4, draw the gear output valve of compressor 7, and by 7 work of described air-conditioning driver element 2 Driven Compressor of described CAN bus 8 controls.
Described conditioning control unit 1 is the air-conditioning main control unit on the car, is used for being responsible for gathering all temps index, sends the running of control command control car load air-conditioning; Described temperature sensor 4 is meant the constant temperature of monitoring a/c system and the temperature index of running cooling and warming situation, main responsible transmission be used for judgment processing can for conditioning control unit module all temps signal, described temperature sensor 4 also is used for detecting in real time the temperature of evaporator 3, and sends this temperature signal to control unit; Described air-conditioning driver element 2 is meant accepts the order of air-conditioning control module, and the real driver module of carrying out the running compressor and opening the electrothermal heating unit; Described blowing engine 5, radical function are realized air-conditioning air-out adjusting air quantity; Described air-conditioning compressor 7 can reach refrigeration by pressure gas, and described compressor, blowing engine and evaporator are formed refrigerating apparatus.Described car load CAN bus 8 is mainly used in the signal that transmits each module ECU; Described conditioning control unit 1 passes through CAN wire size wire joint to car load CAN bus 8, described air-conditioning driver element 2 also passes through CAN wire size wire joint to car load CAN bus 8, evaporator 3 actual temperature value that described conditioning control unit 1 detects according to temperature sensor 4, by calculating the gear output valve of compressor 7, and by 7 work of described air-conditioning driver element 2 Driven Compressor of described CAN bus 8 controls.
Described a/c system also comprises electrothermal heating unit 6, and described electrothermal heating unit 6 is connected with the mouth of described air-conditioning driver element, and the described electrothermal heating unit 6 general heating core bodys that can produce heat by electric current that adopt are as the PCT device.
Be illustrated in figure 2 as the control method diagram of circuit of described a/c system, may further comprise the steps:
Step 10: described temperature sensor 4 detects the actual temperature T1 of evaporator 3, and sends a signal to conditioning control unit 1;
Step 11: described conditioning control unit 1 receives evaporator actual temperature value T1, compares and obtains temperature gap with inner setting temperature value T2 in being stored in control unit
Step 12: described conditioning control unit is to this temperature gap
Carry out the proportional integral (PI) computing and obtain the gear output valve;
Step 13: conditioning control unit is exported to the air-conditioning driver element with compressor gear output valve, air-conditioning driver element control compressor operating.
Wherein, the described proportional integral (PI) computing in the described step 12 also comprises the steps:
Step 121: set maximum place value and minimum gear value;
Step 122: with described temperature gap
Multiply by proportionality coefficient K
PObtain ratio output valve U
P
Step 124: with ratio output valve U
PWith current integration output valve U
iAddition obtains the integration output valve, at this moment, detects actual temperature value T1 earlier whether in protection value scope, and described protection value can be selected according to the actual requirements, if in protection value scope then will be earlier with the integrated value zero clearing;
Step 127: described integration output valve and the addition of ratio output valve are obtained final compressor gear output valve.
Also comprised step 123 before step 124: described conditioning control unit is judged described ratio output valve U
PWhether between the maximum gear and minimum gear of compressor, if between maximum place value of setting and minimum gear value then carry out next step computing, otherwise with described ratio output valve U
PBe set at maximum place value or minimum gear value, as described ratio output valve U
PDuring greater than the maximum place value, described ratio output valve U
PBe the maximum place value; As described ratio output valve U
PDuring less than minimum gear value, described ratio output valve U
PBe minimum gear value.
Before step 127, also comprise step 125: judge the integration output valve U that obtains
iWhether between the maximum place value and minimum gear value of compressor, if between the maximum gear of compressor and minimum gear then carry out next step computing, otherwise with described integration output valve U
iBe set at maximum place value or minimum gear value, as described ratio output valve U
PDuring greater than the maximum place value, described ratio output valve U
PBe the maximum place value; As described ratio output valve U
PDuring less than minimum gear value, described ratio output valve U
PBe minimum gear value.
Before step 127, also comprise step 126: judge described integration output valve U
iWhether be positive number or described integration output valve U
iWith described ratio output valve U
PAnd be positive number whether, if positive number then compressor gear output valve be described integration output valve U
iWith described ratio output valve U
PAnd, otherwise compressor gear output valve PI is minimum gear value.
After step 127, also comprise step 128: judge that described compressor gear output valve is whether between the maximum place value and minimum gear value of compressor, if this is worth and is final gear output valve between the maximum gear of compressor and minimum gear, otherwise final gear output valve is set at maximum place value or minimum gear value, when described final gear output valve during greater than the maximum place value, described final gear output valve is the maximum place value; When described final gear output valve during less than minimum gear value, described final gear output valve is minimum gear value.
After step 128, also comprise step 129: described final gear output valve is outputed to compressor.
And the control method of a/c system of the present invention; make compressor rotary speed along with evaporator temperature is regulated; compressor rotary speed was accelerated when temperature was too high; and temperature is crossed when low rotating speed and is restrained; satisfied and evaporator protection neither can occur the situation that can satisfy user refrigeration is arranged, allowed the imperceptible air-conditioning compressor abnormal protection of user, and compressor rotary speed is low can also the actv. conserve energy; reduce noise and vibration, improved the comfort level that people drive.
Claims (8)
1. a/c system, comprise evaporator, compressor, blowing engine and temperature sensor, it is characterized in that: also comprise conditioning control unit, air-conditioning driver element and CAN bus, described conditioning control unit connects evaporator, blowing engine and temperature sensor respectively, described air-conditioning driver element connects compressor, the evaporator actual temperature value that described conditioning control unit detects according to temperature sensor, draw the gear output valve of compressor, and by the described air-conditioning drive unit drives of the total line control of described CAN compressor operating.
2. a/c system according to claim 1, it is characterized in that: described conditioning control unit receives the evaporator actual temperature value, compare and obtain temperature gap with the inner setting temperature value in being stored in conditioning control unit, conditioning control unit carries out the proportional integral (PI) computing to this temperature gap and obtains the gear output valve and flow to air-conditioning driver element control compressor operating.
3. a/c system according to claim 1 is characterized in that: described a/c system also comprises the electrothermal heating unit, and described electrothermal heating unit is connected with the mouth of described air-conditioning driver element.
4. control method of a/c system according to claim 1 may further comprise the steps:
Temperature sensor detects the evaporator actual temperature, and sends a signal to conditioning control unit;
Described control unit receives the evaporator actual temperature value, compares and obtains temperature gap with the inner setting temperature value in being stored in conditioning control unit;
Described conditioning control unit carries out the proportional integral (PI) computing to this temperature gap and obtains the gear output valve;
Conditioning control unit is exported to the air-conditioning driver element with compressor gear output valve, air-conditioning driver element control compressor operating.
5. control method according to claim 4 is characterized in that:
Described proportional integral (PI) computing is at first setting maximum place value and minimum gear value;
Described temperature gap be multiply by proportionality coefficient obtain the ratio output valve;
Ratio output valve and the addition of current integration output valve are obtained the integration output valve;
Described integration output valve and proportional integral value addition are obtained final compressor gear output valve.
6. control method according to claim 5 is characterized in that:
Before current ratio output valve and the addition of integration output valve are obtained the integration output valve, described conditioning control unit judges that described ratio output valve is whether between the maximum gear and minimum gear of compressor, if between the maximum gear of compressor and minimum gear then carry out next step computing, otherwise described ratio output valve is set at maximum place value or minimum gear value.
7. according to claim 5 or 6 described control methods, it is characterized in that:
Before ratio output valve and the addition of current integration output valve obtain the integration output valve, described conditioning control unit judges that the integration output valve that obtains is whether between the maximum place value and minimum gear value of compressor, if, otherwise described integration output valve is set at maximum place value or minimum gear value between the maximum gear of compressor and minimum gear then carry out next step computing.
8. control method according to claim 7 is characterized in that:
Described conditioning control unit judge described integration output valve whether be positive number or described integration output valve and described ratio output valve and whether be positive number, if positive number then compressor gear output valve be described integration output valve and described ratio output valve and, otherwise compressor gear output valve is the minimum gear value of compressor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009101071713A CN101875290A (en) | 2009-04-30 | 2009-04-30 | Air conditioning system and control method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009101071713A CN101875290A (en) | 2009-04-30 | 2009-04-30 | Air conditioning system and control method |
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| Publication Number | Publication Date |
|---|---|
| CN101875290A true CN101875290A (en) | 2010-11-03 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009101071713A Pending CN101875290A (en) | 2009-04-30 | 2009-04-30 | Air conditioning system and control method |
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Cited By (16)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102635540A (en) * | 2012-04-01 | 2012-08-15 | Tcl空调器(中山)有限公司 | Compressor speed regulating method, device and air conditioning equipment |
| CN102650461A (en) * | 2011-02-24 | 2012-08-29 | 铃木株式会社 | Vehicle air conditioning control system |
| CN102700481A (en) * | 2012-05-08 | 2012-10-03 | 中国第一汽车股份有限公司 | Control method and device for air conditioning compressor and heater of electric automobile |
| CN103743989A (en) * | 2013-12-28 | 2014-04-23 | 柳州力通车用空调有限公司 | An air conditioner wire harness electric detecting apparatus |
| CN104359186A (en) * | 2014-10-27 | 2015-02-18 | 芜湖美智空调设备有限公司 | Control method for air conditioner and control device for air conditioner |
| CN104442281A (en) * | 2014-12-08 | 2015-03-25 | 重庆瑞阳科技开发有限公司 | Car and air conditioning controller module thereof |
| CN104773047A (en) * | 2015-03-17 | 2015-07-15 | 河南银泰新能源汽车有限公司 | Electric automobile air conditioner panel control system and control method thereof |
| CN104870225A (en) * | 2012-12-18 | 2015-08-26 | 三菱自动车工业株式会社 | Refrigerant circulation device |
| CN108656894A (en) * | 2017-03-28 | 2018-10-16 | 福特全球技术公司 | The climate controlling of hybrid electric vehicle with engine stop/startup |
| CN110154682A (en) * | 2019-05-24 | 2019-08-23 | 浙江吉利控股集团有限公司 | Temprature control method and system for vehicle air conditioning |
| CN110486262A (en) * | 2019-08-23 | 2019-11-22 | 常州康普瑞汽车空调有限公司 | Compressor temperature controller, control system and method and automobile air conditioner compressor |
| CN112160900A (en) * | 2020-08-31 | 2021-01-01 | 上汽通用五菱汽车股份有限公司 | Compressor speed regulation method, system, equipment and storage medium |
| CN112829547A (en) * | 2021-01-13 | 2021-05-25 | 东风汽车股份有限公司 | Air conditioner control method of electric vehicle |
| CN113028674A (en) * | 2021-03-31 | 2021-06-25 | 四川长虹空调有限公司 | Control protection method of refrigeration system |
| CN113532017A (en) * | 2021-07-19 | 2021-10-22 | 长虹美菱股份有限公司 | Noise control method of variable frequency refrigerator |
| CN115179724A (en) * | 2022-06-17 | 2022-10-14 | 泰铂（上海）环保科技股份有限公司 | Control method and device for air conditioner compressor for new energy vehicle and computer equipment |
-
2009
- 2009-04-30 CN CN2009101071713A patent/CN101875290A/en active Pending
Cited By (21)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102650461A (en) * | 2011-02-24 | 2012-08-29 | 铃木株式会社 | Vehicle air conditioning control system |
| CN102650461B (en) * | 2011-02-24 | 2014-04-23 | 铃木株式会社 | Vehicle air conditioning control system |
| CN102635540A (en) * | 2012-04-01 | 2012-08-15 | Tcl空调器(中山)有限公司 | Compressor speed regulating method, device and air conditioning equipment |
| CN102700481A (en) * | 2012-05-08 | 2012-10-03 | 中国第一汽车股份有限公司 | Control method and device for air conditioning compressor and heater of electric automobile |
| CN102700481B (en) * | 2012-05-08 | 2016-08-24 | 中国第一汽车股份有限公司 | The compressor of air conditioner of electric automobile and method for controlling heater and device |
| CN104870225A (en) * | 2012-12-18 | 2015-08-26 | 三菱自动车工业株式会社 | Refrigerant circulation device |
| CN104870225B (en) * | 2012-12-18 | 2017-03-01 | 三菱自动车工业株式会社 | Refrigerant cycle device |
| CN103743989A (en) * | 2013-12-28 | 2014-04-23 | 柳州力通车用空调有限公司 | An air conditioner wire harness electric detecting apparatus |
| CN104359186A (en) * | 2014-10-27 | 2015-02-18 | 芜湖美智空调设备有限公司 | Control method for air conditioner and control device for air conditioner |
| CN104442281A (en) * | 2014-12-08 | 2015-03-25 | 重庆瑞阳科技开发有限公司 | Car and air conditioning controller module thereof |
| CN104773047A (en) * | 2015-03-17 | 2015-07-15 | 河南银泰新能源汽车有限公司 | Electric automobile air conditioner panel control system and control method thereof |
| CN104773047B (en) * | 2015-03-17 | 2018-05-08 | 河南银泰新能源汽车有限公司 | Air conditioner of electric vehicle panel control system and its control method |
| CN108656894A (en) * | 2017-03-28 | 2018-10-16 | 福特全球技术公司 | The climate controlling of hybrid electric vehicle with engine stop/startup |
| CN110154682A (en) * | 2019-05-24 | 2019-08-23 | 浙江吉利控股集团有限公司 | Temprature control method and system for vehicle air conditioning |
| CN110154682B (en) * | 2019-05-24 | 2021-04-27 | 浙江吉利控股集团有限公司 | Temperature control method and system for vehicle air conditioner |
| CN110486262A (en) * | 2019-08-23 | 2019-11-22 | 常州康普瑞汽车空调有限公司 | Compressor temperature controller, control system and method and automobile air conditioner compressor |
| CN112160900A (en) * | 2020-08-31 | 2021-01-01 | 上汽通用五菱汽车股份有限公司 | Compressor speed regulation method, system, equipment and storage medium |
| CN112829547A (en) * | 2021-01-13 | 2021-05-25 | 东风汽车股份有限公司 | Air conditioner control method of electric vehicle |
| CN113028674A (en) * | 2021-03-31 | 2021-06-25 | 四川长虹空调有限公司 | Control protection method of refrigeration system |
| CN113532017A (en) * | 2021-07-19 | 2021-10-22 | 长虹美菱股份有限公司 | Noise control method of variable frequency refrigerator |
| CN115179724A (en) * | 2022-06-17 | 2022-10-14 | 泰铂（上海）环保科技股份有限公司 | Control method and device for air conditioner compressor for new energy vehicle and computer equipment |
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Application publication date: 20101103 |