CN102878646B - Air-conditioner control system and method for electric vehicle - Google Patents
Air-conditioner control system and method for electric vehicle Download PDFInfo
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- CN102878646B CN102878646B CN201110197869.6A CN201110197869A CN102878646B CN 102878646 B CN102878646 B CN 102878646B CN 201110197869 A CN201110197869 A CN 201110197869A CN 102878646 B CN102878646 B CN 102878646B
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Abstract
The invention discloses an air-conditioner control system for an electric vehicle. The air-conditioner control system comprises a whole vehicle controller, a temperature sensor, a medium-voltage switch and an air-conditioner controller, wherein the whole vehicle controller is used for judging whether the whole vehicle state of the electric vehicle meets the operation requirements of an air-conditioner; the temperature sensor is used for measuring the temperature of a compressor of the electric vehicle; the medium-voltage switch is used for determining the pressure state inside the compressor and is turned on when the pressure inside the compressor is higher than a predetermined pressure threshold; and the air-conditioner controller is connected with the whole vehicle controller, the temperature sensor and the medium-voltage switch and is used for receiving a cooling or heating request input by a user and controlling a compressor controller, an air-conditioner cooling fan and a positive temperature coefficient (PTC) heater according to the judgment result of the whole vehicle controller, the measurement result of the temperature sensor and the state of the medium-voltage switch. The invention further discloses an air-conditioner control method for an electric vehicle. According to the air-conditioner control system for the electric vehicle, the air-conditioner controller is added to control an air conditioning system so as to reduce the workload of processing information of the whole vehicle controller. In addition, the whole vehicle controller is universal so as to reduce the production cost.
Description
Technical field
The present invention relates to field of automobile, particularly a kind of air-conditioner control system of electric automobile and method.
Background technology
Nowadays, especially pure electric automobile of new forms of energy new car, becomes study hotspot gradually.Pure electric automobile is the same with conventional automobile, in order to meet the requirement of consumer for comfortableness, aircondition is also installed.
At present, the refrigeration of the air-conditioning system on pure electric automobile and the startup of heat-production functions are controlled by entire car controller, although reasonable judgement and processing have been carried out in refrigeration and the heat request of this control method to air-conditioning, but, air-conditioning system correlated inputs and output signal are be all directly inputted into entire car controller or directly driven by entire car controller, not only increase the wire harness of entire car controller, also require entire car controller must possess very high driving force and data quick-processing and forwarding capability, production cost is high.
Summary of the invention
Object of the present invention is intended at least solve one of above-mentioned technological deficiency.
For this reason, one object of the present invention is to propose a kind of air-conditioner control system of electric automobile, and this air-conditioner control system can reduce the workload of entire car controller process information, and production cost is low.
According to an aspect of the present invention, propose a kind of air-conditioner control system of electric automobile, having comprised: entire car controller, for judging whether the whole vehicle state of electric automobile meets air-conditioning and open requirement; Temperature sensor, for measuring the temperature of compressor of electric automobile; Medium voltage switch or circuit breaker, for determining the pressure state in the compressor of described electric automobile, when the pressure in described compressor is during higher than predetermined pressure threshold, described Medium voltage switch or circuit breaker is connected; And air-conditioner controller, described air-conditioner controller is connected with described entire car controller, described temperature sensor and described Medium voltage switch or circuit breaker, for receiving the refrigeration of user's input or heating request signal, described air-conditioner controller, according to the state of the measurement result of the judged result of described entire car controller, described temperature sensor and described Medium voltage switch or circuit breaker, is controlled compressor controller, air-conditioning cooling fan and ptc heater.
According to the air-conditioner control system of the electric automobile of the embodiment of the present invention, by increasing air-conditioner controller control air-conditioning system, be conducive to the optimization of system, reduced the workload of entire car controller process information simultaneously.And when air-conditioning system and control strategy thereof change, the hardware interface of entire car controller does not need change, only need change software, improve the versatility of entire car controller, reduce production cost.
In addition, the air-conditioner control system of electric automobile according to the above embodiment of the present invention can also have following additional technical characterictic:
Described air-conditioner control system also comprises control panel, described control panel be connected with described air-conditioner controller and described control panel on be provided with refrigeration switch and heater switch, for receiving user's refrigeration request and heating request.
Between described air-conditioner controller and described entire car controller, be connected by physics wire harness.
When meet simultaneously: without entire car controller system closing request signal; Battery tension is normal, and power electric piezoelectric battery is normal, has car key access signal; And battery charge state SOC value is while being greater than predetermined SOC threshold value, described entire car controller judges that the whole vehicle state of electric automobile meets air-conditioning and opens requirement.
Or, when meet simultaneously: without entire car controller system closing request signal; Battery tension is normal, and power electric piezoelectric battery is normal, has car key access signal; And SOC value of battery is less than described predetermined SOC threshold value, but the speed of a motor vehicle is during higher than predetermined speed of a motor vehicle threshold value, and described entire car controller judges that the whole vehicle state of electric automobile meets air-conditioning and opens requirement.
Described controller is according to following mode control compressor controller, air-conditioning cooling fan and ptc heater:
When described air-conditioner controller receives refrigeration request signal, and described entire car controller judges that the whole vehicle state of described electric automobile meets air-conditioning and opens requirement, and the temperature of the compressor of described electric automobile is higher than predetermined temperature threshold, and when described Medium voltage switch or circuit breaker is connected, described air-conditioning cooling fan low-speed running is opened and controlled to compressor controller and described air-conditioning cooling fan described in described air-conditioner controller control;
When described air-conditioner controller receives refrigeration request signal, and described entire car controller judges that the whole vehicle state of described electric automobile meets air-conditioning and opens requirement, and the temperature of the compressor of described electric automobile is higher than predetermined temperature threshold, and when described Medium voltage switch or circuit breaker access failure, compressor controller and described air-conditioning cooling fan are opened and are controlled described air-conditioning cooling fan and run up described in described air-conditioner controller control;
Heat request signal when described air-conditioner controller receives, and described entire car controller judges that the whole vehicle state of described electric automobile meets air-conditioning and opens while requiring, ptc heater is opened described in described air-conditioner controller control.
Another object of the present invention is to propose a kind of air conditioning control method of electric automobile, comprises the following steps: A: receive user's refrigeration request or heat request; B: whether the whole vehicle state that judges electric automobile meets air-conditioning unlatching requirement; And C: the state that obtains air-conditioning system; And D: according to user's refrigeration request or heat request, according to the state of the judged result of step B and described air-conditioning system, control compressor controller, air-conditioning cooling fan and ptc heater with refrigeration or heat.
The aspect that the present invention is additional and advantage in the following description part provide, and part will become obviously from the following description, or recognize by practice of the present invention.
Brief description of the drawings
The present invention above-mentioned and/or additional aspect and advantage will become from the following description of the accompanying drawings of embodiments obviously and easily and understand, wherein:
Fig. 1 is the structural representation of the air-conditioner control system of the electric automobile of one embodiment of the invention;
Fig. 2 is the flow chart of the air conditioner refrigerating method of the electric automobile of one embodiment of the invention; And
Fig. 3 is the flow chart of the air-conditioning heating method of the electric automobile of one embodiment of the invention.
Detailed description of the invention
Describe embodiments of the invention below in detail, the example of described embodiment is shown in the drawings, and wherein same or similar label represents same or similar element or has the element of identical or similar functions from start to finish.Be exemplary below by the embodiment being described with reference to the drawings, only for explaining the present invention, and can not be interpreted as limitation of the present invention.
As shown in Figure 1, comprise according to the air-conditioner control system of the electric automobile of the embodiment of the present invention: entire car controller 110, temperature sensor 120, Medium voltage switch or circuit breaker 130 and air-conditioner controller 140.
Entire car controller 110 is for judging whether the whole vehicle state of electric automobile meets air-conditioning and open requirement.Temperature sensor 120 is for measuring the temperature in the compressor 150 of electric automobile.Medium voltage switch or circuit breaker 130 is for determining the pressure state in the compressor 150 of electric automobile, and when the pressure in compressor 150 is during higher than predetermined pressure threshold, Medium voltage switch or circuit breaker 130 is connected, and becomes " ON " state from " OFF " state.
Air-conditioner controller 140 is connected with entire car controller 110, temperature sensor 120 and Medium voltage switch or circuit breaker 130.Air-conditioner controller 140 receives the refrigeration of user's input or heats request, and according to the state of the measurement result of the judged result of entire car controller 110, temperature sensor 120 and Medium voltage switch or circuit breaker 130, control compressor controller 160, air-conditioning cooling fan 170 and ptc heater 180.
Thus, according to the air-conditioner control system of the electric automobile of the embodiment of the present invention, control air-conditioning system by increasing air-conditioner controller 140, be conducive to the optimization of system, reduced the workload of entire car controller 110 process informations simultaneously.And when air-conditioning system and control strategy thereof change, the hardware interface of entire car controller 110 does not need change, only need change software, improve the versatility of entire car controller 110, reduce production cost.
In one embodiment of the invention, this air-conditioner control system also can comprise control panel 190, control panel 190 is connected with air-conditioner controller 140, and on control panel 190, is provided with refrigeration switch 1910 and heater switch 1920, is respectively used to receive user's refrigeration request and heat request.
Describe the determination methods of entire car controller 110 and the course of work of air-conditioner controller 140 below in detail.
Particularly, entire car controller 110, according to following condition, judges whether whole vehicle state meets air-conditioning and open requirement:
(1) without entire car controller system closing request signal;
(2) battery tension is normal, and electrokinetic cell voltage is normal, has car key access signal;
Wherein, battery tension normally shows to exist air-conditioning control signal, and electrokinetic cell voltage normally shows to exist air-conditioning to drive signal.
(3) battery SOC (state-of-charge) value is greater than predetermined SOC threshold value.
In an example of the present invention, SOC threshold value is 30%.
It should be noted, if SOC value of battery is less than predetermined SOC threshold value, also can further judge in conjunction with current vehicle speed.If current vehicle speed, higher than predetermined speed of a motor vehicle threshold value, now in order to ensure the basic functions such as demist defrosting, is carved and should be opened electric air-conditioning where necessary, judge that whole vehicle state meets air-conditioning and opens requirement.If current vehicle speed, lower than predetermined speed of a motor vehicle threshold value, for fear of electrokinetic cell overdischarge, should be closed air-conditioning, judge that whole vehicle state does not meet air-conditioning and opens requirement.
Only have in the time meeting above-mentioned condition, entire car controller 110 just judges that whole vehicle state meets air-conditioning and opens requirement simultaneously, and output OK signal is to air-conditioner controller 140.
Air-conditioner controller 140 is connected with control panel 190, entire car controller 110, temperature sensor 120 and Medium voltage switch or circuit breaker 130.In the time that air-conditioner controller 140 receives user's refrigeration request, temperature in the compressor 150 that air-conditioner controller 140 reading temperature sensors 120 are measured, judge that whether the temperature of compressor 150 is higher than predetermined temperature threshold, read the state of Medium voltage switch or circuit breaker 130 and the signal that entire car controller 110 is exported simultaneously.When the temperature of compressor 150 is higher than predetermined temperature threshold, and when entire car controller 110 is exported OK signal, air-conditioner controller 140 judgement refrigeration requests effectively, output refrigeration allows signal to compressor controller 160, determine that according to the state of Medium voltage switch or circuit breaker 130 air-conditioning cooling fan 170 low-speed runnings still run up (when Medium voltage switch or circuit breaker 130 is " ON " state simultaneously, controlling air-conditioning cooling fan 180 runs up, when Medium voltage switch or circuit breaker 130 is " OFF " state, control air-conditioning cooling fan 180 low-speed runnings), start air conditioner refrigerating function.
When air-conditioner controller 140 receives when request of heating of user, air-conditioner controller 140 reads the signal that entire car controller 110 is exported.In the time that entire car controller 110 is exported OK signal, air-conditioner controller 140 judgements heat request effectively, and output heats and allows signal to ptc heater, starts air-conditioning heating function.
Describe the air conditioning control method of the electric automobile of the embodiment of the present invention in detail below in conjunction with Fig. 2 and Fig. 3.
The flow chart that is illustrated in figure 2 the air conditioner refrigerating method of the electric automobile of the embodiment of the present invention, this refrigerating method comprises the following steps:
Step S201, receives user's refrigeration request.
For example, user can press the refrigeration switch on control panel, the request of input refrigeration.
Step S202, judges whether whole vehicle state meets air-conditioning and open requirement.
Particularly, in the time meeting the following conditions, judge that whole vehicle state meets air-conditioning and opens requirement simultaneously:
(1) without entire car controller system closing request signal;
(2) battery tension is normal, and electrokinetic cell voltage is normal, has car key access signal;
Wherein, battery tension normally shows to exist air-conditioning control signal, and electrokinetic cell voltage normally shows to exist air-conditioning to drive signal.
(3) battery SOC (state-of-charge) value is greater than predetermined SOC threshold value.
It should be noted, if SOC value of battery is less than predetermined SOC threshold value, also can further judge in conjunction with current vehicle speed.If current vehicle speed, higher than predetermined speed of a motor vehicle threshold value, now in order to ensure the basic functions such as demist defrosting, is carved and should be opened electric air-conditioning where necessary, judge that whole vehicle state meets air-conditioning and opens requirement.If current vehicle speed, lower than predetermined speed of a motor vehicle threshold value, for fear of electrokinetic cell overdischarge, should be closed air-conditioning, judge that whole vehicle state does not meet air-conditioning and opens requirement.
Step S203, obtains the oneself state of air-conditioning system.
In one embodiment of the invention, measure the temperature and pressure in compressor.
Step S204, according to the judged result control compressor controller of the oneself state of air-conditioning system and step S202 and air-conditioning cooling fan.
Particularly, when judge the whole vehicle state of electric automobile meet air-conditioning open require and compressor in temperature during higher than predetermined temperature threshold, output refrigeration allows signal to compressor controller.Further, when the pressure in compressor is during higher than predetermined pressure threshold, control air-conditioning cooling fan and run up; When the pressure in compressor is during lower than predetermined pressure threshold, control air-conditioning cooling fan low-speed running.
The flow chart that is illustrated in figure 3 the air-conditioning heating method of the electric automobile of the embodiment of the present invention, this heating method comprises the following steps:
Step S301, receives user's the request that heats.
Step S302, judges whether whole vehicle state meets air-conditioning and open requirement.
Concrete deterministic process is identical with step S202, herein for simplicity, repeats no more.
Step S303, when judging that whole vehicle state meets air-conditioning and opens while requiring, opens ptc heater with heating.
Should be understood that above-described embodiment is only schematic embodiment, is not limited to the present invention.Those skilled in the art can modify and change according to above-mentioned thought, for example, change SOC threshold value and air-conditioning and open Rule of judgment etc., and these modifications and variations all should be included in protection scope of the present invention.
Although illustrated and described embodiments of the invention, for the ordinary skill in the art, be appreciated that without departing from the principles and spirit of the present invention and can carry out multiple variation, amendment, replacement and modification to these embodiment, scope of the present invention is by claims and be equal to and limit.
Claims (12)
1. an air-conditioner control system for electric automobile, is characterized in that, comprising:
Entire car controller, for judging whether the whole vehicle state of electric automobile meets air-conditioning and open requirement;
Temperature sensor, for measuring the temperature of compressor of electric automobile;
Medium voltage switch or circuit breaker, for determining the pressure state in the compressor of described electric automobile, when the pressure in described compressor is during higher than predetermined pressure threshold, described Medium voltage switch or circuit breaker is connected; And
Air-conditioner controller, described air-conditioner controller and described entire car controller, described temperature sensor is connected with described Medium voltage switch or circuit breaker, described air-conditioner controller is for receiving the refrigeration of user's input or heating request signal, and according to the judged result of described entire car controller, the measurement result of described temperature sensor and the state of described Medium voltage switch or circuit breaker, control compressor controller, air-conditioning cooling fan and ptc heater, wherein, when described air-conditioner controller receives refrigeration request signal, and described entire car controller judges that the whole vehicle state of described electric automobile meets air-conditioning and opens requirement, and the temperature of the compressor of described electric automobile is higher than predetermined temperature threshold, and when described Medium voltage switch or circuit breaker is connected, described in described air-conditioner controller control, described air-conditioning cooling fan low-speed running is opened and controlled to compressor controller and described air-conditioning cooling fan.
2. the air-conditioner control system of electric automobile according to claim 1, is characterized in that, also comprises:
Control panel, described control panel be connected with described air-conditioner controller and described control panel on be provided with refrigeration switch and heater switch, for receiving user's refrigeration request and heating request.
3. the air-conditioner control system of electric automobile according to claim 1, is characterized in that, between described air-conditioner controller and described entire car controller, is connected by physics wire harness.
4. the air-conditioner control system of electric automobile according to claim 1, is characterized in that, in the time meeting the following conditions, described entire car controller judges that the whole vehicle state of electric automobile meets air-conditioning and opens requirement simultaneously:
Without entire car controller system closing request signal;
Battery tension is normal, and power electric piezoelectric battery is normal, has car key access signal; And
Battery charge state SOC value is greater than predetermined SOC threshold value.
5. the air-conditioner control system of electric automobile according to claim 1, is characterized in that, in the time meeting the following conditions, described entire car controller judges that the whole vehicle state of electric automobile meets air-conditioning and opens requirement simultaneously:
Without entire car controller system closing request signal;
Battery tension is normal, and electrokinetic cell voltage is normal, has car key access signal; And
SOC value of battery is less than described predetermined SOC threshold value, but the speed of a motor vehicle is higher than predetermined speed of a motor vehicle threshold value.
6. the air-conditioner control system of electric automobile according to claim 1, is characterized in that, wherein said air-conditioner controller is according to following mode control compressor controller, air-conditioning cooling fan and ptc heater:
When described air-conditioner controller receives refrigeration request signal, and described entire car controller judges that the whole vehicle state of described electric automobile meets air-conditioning and opens requirement, and the temperature of the compressor of described electric automobile is higher than predetermined temperature threshold, and when described Medium voltage switch or circuit breaker access failure, compressor controller and described air-conditioning cooling fan are opened and are controlled described air-conditioning cooling fan and run up described in described air-conditioner controller control.
7. the air-conditioner control system of electric automobile according to claim 1, is characterized in that, wherein said air-conditioner controller is according to following mode control compressor controller, air-conditioning cooling fan and ptc heater:
Heat request signal when described air-conditioner controller receives, and described entire car controller judges that the whole vehicle state of described electric automobile meets air-conditioning and opens while requiring, ptc heater is opened described in described air-conditioner controller control.
8. an air conditioning control method for electric automobile, is characterized in that, comprises the following steps:
A: receive user's refrigeration request or heat request;
B: whether the whole vehicle state that judges electric automobile meets air-conditioning unlatching requirement;
C: the state that obtains air-conditioning system; And
D: according to user's refrigeration request or heat request, according to the state of the judged result of step B and described air-conditioning system, control compressor controller, air-conditioning cooling fan and ptc heater with refrigeration or heat, wherein, when receiving refrigeration request signal, and the whole vehicle state that judges described electric automobile meets air-conditioning and opens requirement, and the temperature of the compressor of described electric automobile is higher than predetermined temperature threshold, and when described Medium voltage switch or circuit breaker is connected, control described compressor controller and described air-conditioning cooling fan and open and control described air-conditioning cooling fan low-speed running.
9. the air conditioning control method of electric automobile according to claim 8, is characterized in that, in the time meeting the following conditions, judges that the whole vehicle state of described electric automobile meets air-conditioning unlatching requirement simultaneously:
Without entire car controller system closing request signal;
Low-voltage power supply is normal, and high-tension battery connects, the input of KEY ON signal; And
SOC value of battery is greater than predetermined SOC threshold value.
10. the air conditioning control method of electric automobile according to claim 8, is characterized in that, in the time meeting the following conditions, judges that the whole vehicle state of described electric automobile meets air-conditioning unlatching requirement simultaneously:
Without entire car controller system closing request signal;
Low-voltage power supply is normal, and high-tension battery connects, the input of KEY ON signal; And
SOC value of battery is less than described predetermined SOC threshold value, but the speed of a motor vehicle is higher than predetermined speed of a motor vehicle threshold value.
11. air conditioning control methods according to claim 8, is characterized in that, described step D further comprises:
When receiving refrigeration request signal, and the whole vehicle state that judges described electric automobile meets air-conditioning and opens requirement, and the temperature of the compressor of described electric automobile is higher than predetermined temperature threshold, and when described Medium voltage switch or circuit breaker access failure, control described compressor controller and described air-conditioning cooling fan and open and control described air-conditioning cooling fan and run up;
12. air conditioning control methods according to claim 8, is characterized in that, described step D further comprises:
Heat request signal when receiving, and the whole vehicle state that judges described electric automobile meets air-conditioning and open while requirement, control described ptc heater and open.
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| CN201110197869.6A CN102878646B (en) | 2011-07-14 | 2011-07-14 | Air-conditioner control system and method for electric vehicle |
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| CN103381782B (en) * | 2013-06-24 | 2015-10-28 | 奇瑞新能源汽车技术有限公司 | A kind of electric automobile air-conditioning system and control method thereof |
| CN104589958B (en) * | 2013-10-30 | 2017-01-18 | 北汽福田汽车股份有限公司 | air conditioner control system and method of electric automobile |
| CN104596021A (en) * | 2013-10-31 | 2015-05-06 | 北汽福田汽车股份有限公司 | Electric automobile and air conditioner control system and control method thereof |
| JP6120786B2 (en) * | 2014-02-13 | 2017-04-26 | 三菱電機株式会社 | Air conditioner and control program |
| CN104827852A (en) * | 2014-07-29 | 2015-08-12 | 北汽福田汽车股份有限公司 | Air conditioning system of vehicle, control method of air conditioning system and vehicle having same |
| KR101575253B1 (en) * | 2014-08-27 | 2015-12-07 | 현대자동차 주식회사 | Main semiconductor device for air conditioner and vehicle air conditioner system having the same |
| CN104597787B (en) * | 2014-12-15 | 2019-03-12 | 北京新能源汽车股份有限公司 | The method and system of remote air conditioner control is carried out to electric car |
| CN105904930A (en) * | 2016-05-05 | 2016-08-31 | 金华理工泰科汽车研究所有限公司 | Automotive air conditioner control system |
| CN108591035B (en) * | 2018-04-28 | 2020-08-07 | 重庆长安汽车股份有限公司 | Compressor starting control method, device, equipment and readable storage medium |
| CN109017209A (en) * | 2018-08-17 | 2018-12-18 | 安徽信息工程学院 | Pure electric automobile voice air conditioner control system |
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