CN103448728A - Control method and system of traditional vehicular air conditioner in hybrid electric vehicle - Google Patents
Control method and system of traditional vehicular air conditioner in hybrid electric vehicle Download PDFInfo
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- CN103448728A CN103448728A CN2013102548529A CN201310254852A CN103448728A CN 103448728 A CN103448728 A CN 103448728A CN 2013102548529 A CN2013102548529 A CN 2013102548529A CN 201310254852 A CN201310254852 A CN 201310254852A CN 103448728 A CN103448728 A CN 103448728A
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Abstract
The invention discloses a control method and system of a traditional vehicular air conditioner in a hybrid electric vehicle. Engine economy is increased by fixed line control. The control method is characterized by including: a vehicle controller receives information transmitted by an air conditioner request switch, judges working conditions and fault modes of the current vehicle, controls according to engine control manners, and transmits an engine starting signal, an engine target rotation speed and a target torque signal to an engine management system through a CAN (controller area network) bus; the engine management system, after receiving the information transmitted by the air conditioner request switch, controls an engine according to the engine starting signal, the engine target rotation speed and the target torque signal received by the CAN bus, and controls an air conditioner switch relay to realize on and off of the vehicular air conditioner. By the method, load of the engine can be increased to the maximum extent, and accordingly working efficiency of the engine can be increased, oil consumption of the engine can be lowered, engine economy and comfortableness of the whole vehicle can be improved.
Description
Technical field
The present invention relates to traditional car air-conditioner and control correlative technology field, refer in particular to control method and the system thereof of a kind of traditional car air-conditioner in hybrid vehicle.
Background technology
In recent years, mainly the chassis based on the conventional gasoline car and dynamic assembly carry out Transform Type design in the research and development of domestic hybrid vehicle.The original driving engine of general reservation and a/c system, then add motor, battery and dynamic coupling system on this basis, form the dynamic assembly of hybrid vehicle.The propulsion source of tradition Vehicular air-conditioner compressor, from driving engine, only has refrigeration not possess heat-production functions, and air-conditioning is mainly controlled by driving engine EMS.
Traditional vehicle air-conditioning control principle is as follows: compressor is discharged high-temperature high-pressure refrigerant; The refrigerant of gaseous state flows into condenser.In condenser, gaseous refrigerant is condensed into liquid refrigerant; Liquid refrigerant flows into fluid reservoir, and fluid reservoir stores and filter refrigerant; Flow to expansion valve through the liquid refrigerant filtered, expansion valve makes liquid refrigerant become the liquid state of low temperature, low pressure; Liquid state/the gaseous refrigerant of this cold flow to evaporator.In liquid refrigerant evaporation in evaporator, the air stream of the evaporator core of flowing through reaches refrigerant by heat; In evaporator, all liquid all becomes gaseous refrigerant, and only the gaseous refrigerant with heat could flow into compressor, and then said process repeats again and again, thereby realizes the refrigeration of air-conditioning.
In Series Hybrid-Power Vehicle, no matter under any circumstance the control policy that current traditional car air-conditioner adopts is, as long as chaufeur is opened air-conditioning, controller all can respond and start the engine, driving engine is carried out to position control, allow driving engine operate on the operating point of fixed rotating speed and even twisting moment.There are the following problems to control like this meeting:
A) Parking operating mode: SOC(battery charge amount), while being greater than certain value, when driving engine maintains operation of air conditioner, charged, easily cause over-charging of battery, affect battery life;
B) driving operating mode: SOC was greater than when the certain value while, the Vehicle Driving Cycle demand power was less than the ISG rating horsepower, when driving engine maintains operation of air conditioner, was charged, and easily caused over-charging of battery, affected battery life;
C) when electrical generator ISG fault, although driving engine can drive air-conditioning compressor; But ISG can't load to driving engine, so can't realize the position control of driving engine;
D) when battery failures, engine starting can drive air-conditioning compressor, and ISG can't be charged to battery, and now the generated output of ISG can't discharge, so can impact traffic safety.
Chinese patent application publication No.: CN 102328566A, January 25 2012 Shen Qing Publication day, a kind of hybrid power automobile air conditioner system and control method thereof are disclosed, it comprises DC regulated power supply, car air-conditioner, automotive engine, compressor Mechanical Driven end is driven by mechanical linkage by automotive engine, also include the hybrid power storage battery, air-conditioner controller, controlled select switch, the hybrid power accumulator output end is electrically connected to controlled select switch, the control end of controlled control select switch is respectively by gate-controlled switch TL1, TL2 is connected with DC regulated power supply, the first mouth of controlled select switch is electrically connected to the driven by power end, the second mouth of controlled select switch is connected with magnetic clutch by gate-controlled switch TL3, gate-controlled switch TL1, TL2, the control end of TL3 all is electrically connected to air-conditioner controller.The weak point of this invention is, the control policy of current employing remains takes the position control mode to driving engine, and adopts this mode to have over-charging of battery, affects battery life; During fault handling, can't position control, and can impact traffic safety, greatly reduce the economy of driving engine.
Summary of the invention
The present invention to exist and takes the position control mode to cause the deficiency that the driving engine economy is not high to driving engine in order to overcome in prior art, thereby provide a kind of, to driving engine, takes the alignment mode to improve control method and the system thereof of traditional car air-conditioner in hybrid vehicle of driving engine economy.
To achieve these goals, the present invention is by the following technical solutions:
The control method of a kind of traditional car air-conditioner in hybrid vehicle, adopt the alignment mode by driving engine, that is: in the situation that fixed rotating speed, according to the demand of extraneous moment of torsion, is taked the mode of different moments of torsion, its concrete steps are as follows:
Step 1: after entire car controller receives the information that air-conditioning request switch sends, judgement is when the operating mode of vehicle in front, and controlled according to the mode of driving engine, send Engine Start Signal, engine target rotating speed and engine target torque signal by the CAN bus to engine management system;
Step 2: after engine management system receives the information that air-conditioning request switch sends, and, after receiving Engine Start Signal, engine target rotating speed and engine target torque signal by the CAN bus, driving engine is controlled;
Step 3: be the Parking operating mode if work as the operating mode of vehicle in front, the transformation point that battery charge amount in electrokinetic cell is set is A, and wherein the numerical value of A, between 0 to 1, judges whether the actual battery carrying capacity in electrokinetic cell is less than A, when if the battery charge amount is more than or equal to A, enter step 6; When if the battery charge amount is less than A, enter step 7;
Step 4: be the driving operating mode if work as the operating mode of vehicle in front, the transformation point that battery charge amount in electrokinetic cell is set is A, and wherein the numerical value of A, between 0 to 1, judges whether the actual battery carrying capacity in electrokinetic cell is less than A, when if the battery charge amount is more than or equal to A, enter step 5; When if the battery charge amount is less than A, enter step 7;
Step 5: judge that whether the Vehicle Driving Cycle demand power is less than the ISG rating horsepower, if the Vehicle Driving Cycle demand power is more than or equal to the ISG rating horsepower, enters step 7; If the Vehicle Driving Cycle demand power is less than the ISG rating horsepower, enter step 6;
Step 6: start the engine, driving engine only maintains car air-conditioner, according to the car air-conditioner demand power by engine operation under fixed rotating speed, its horsepower output is the air-conditioning compressor consumed power;
Step 7: start the engine, engine power generation and maintain car air-conditioner, according to the car air-conditioner demand power by engine operation under fixed rotating speed, the summation that its horsepower output is ISG rating horsepower and air-conditioning compressor consumed power.
The driving of car air-conditioner is mainly completed by engine management system, entire car controller mainly carries out the differentiation work of air-conditioning work operating mode, and send work information by the CAN bus to engine management system, that is: Engine Start Signal, engine target rotating speed and target torque signal, engine management system is by the work information received, driving engine is controlled, in the time of start the engine, by engine operation under rotating speed of target, determine the horsepower output of driving engine according to the target torque signal, rather than driving engine directly is operated on fixed point rotating speed and fixed point moment of torsion by force.That is: driving engine adopts alignment to control, the horsepower output of engine operation in the air-conditioning compressor consumed power to this line of summation of ISG rating horsepower and air-conditioning compressor consumed power, the advantage of this control is the work efficiency that can improve to greatest extent the load of driving engine and then improve driving engine, thereby reduced the oil consumption of driving engine, improved the economy of driving engine and the traveling comfort of car load.
As preferably, in step 1, after entire car controller receives the information that air-conditioning request switch sends, in judgement during when the operating mode of vehicle in front, whether et out of order of vehicle in front is worked as in judgement simultaneously; In step 2, engine management system is controlled the break-make that the air conditioning switch relay is realized car air-conditioner simultaneously; Increase step 8, step 8 after step 7: by engine management system, control the disconnection that the air conditioning switch relay is realized car air-conditioner simultaneously.Analyzed by the reason to producing fault, thereby forbidden the car air-conditioner function, improved the service efficiency of driving engine.
As preferably, if judgement enters step 8 when vehicle in front generation engine breakdown.During the driving engine et out of order, driving engine just can't drive the compressor operating in car air-conditioner, so car air-conditioner function forbidding.
As preferably, if judgement judges when vehicle in front generation driving engine ISG fault whether driving engine starts, if driving engine does not start, enter step 8; If driving engine starts, enter step 6.When the ISG electrical fault occurs, if after engine starting, but driving engine can drive car air-conditioner can not generate electricity, the ISG motor can't load to driving engine, so can't realize the position control of driving engine, can address this problem by actv., according to torque signal, make its engine operation on alignment and adopt the driving engine alignment to control.
As preferably, if judgement enters step 7 when vehicle in front generation drive motor fault.The drive motor fault does not affect the driving of car air-conditioner, more excellent under the oil consumption ratio engine position control of driving engine.
As preferably, if judgement judges when vehicle in front generation electrokinetic cell fault whether driving engine starts, if driving engine does not start, enter step 8; If driving engine starts, enter step 6.During the electrokinetic cell fault, if, after the driving engine startup, can drive air-conditioning compressor, the ISG motor can't be charged to battery, and now the generated output of ISG motor can't discharge, so can impact traffic safety.
The control system of a kind of traditional car air-conditioner in hybrid vehicle, comprise entire car controller, car air-conditioner, the air conditioning switch relay, air-conditioning request switch, driving engine, engine management system, the ISG motor, the ISG electric machine controller, electrokinetic cell, power battery management system, drive motor, drive motor controller, change-speed box and wheel, described entire car controller is by CAN bus connecting engine management system, the ISG electric machine controller, electrokinetic cell control system and drive motor controller, described entire car controller connects air-conditioning request switch by wire harness, and described engine management system connects respectively the air conditioning switch relay, air-conditioning request switch and driving engine, described ISG electric machine controller connects respectively ISG motor and electrokinetic cell, described ISG motor connecting engine, described electrokinetic cell control system connects electrokinetic cell, described drive motor controller connects respectively drive motor and electrokinetic cell, described drive motor connects change-speed box, and described change-speed box connects wheel, and described car air-conditioner is connecting engine and air conditioning switch relay respectively.What this control system related to is the car air-conditioner control in hybrid vehicle, the power of car air-conditioner is by engine drive, hybrid power be configured as series connection type hybrid power system, driving engine and ISG motor straight connect in succession, driving engine does not participate in directly driving Vehicle Driving Cycle, as electrical generator, by ISG motor and ISG electric machine controller, to electrokinetic cell, is charged, and electrokinetic cell connects drive motor, and drive motor and change-speed box mechanical connection, thereby drive Vehicle Driving Cycle.
The invention has the beneficial effects as follows: driving engine adopts alignment to control, the horsepower output of engine operation in the air-conditioning compressor consumed power to this line of summation of ISG rating horsepower and air-conditioning compressor consumed power, the advantage of this control is the work efficiency that can improve to greatest extent the load of driving engine and then improve driving engine, thereby reduced the oil consumption of driving engine, improved the economy of driving engine and the traveling comfort of car load.
The accompanying drawing explanation
Fig. 1 is control system block diagram of the present invention.
In figure: 1. entire car controller, 2. car air-conditioner, 3. air conditioning switch relay, 4. air-conditioning request switch, 5. driving engine, 6. engine management system, 7.ISG motor, 8.ISG electric machine controller, 9. electrokinetic cell, 10. power battery management system, 11. drive motor, 12. drive motor controller, 13. change-speed boxs, 14. wheel, the 15.CAN bus.
The specific embodiment
Below in conjunction with the drawings and specific embodiments, the present invention will be further described.
In embodiment as described in Figure 1, the control system of a kind of traditional car air-conditioner in hybrid vehicle, comprise entire car controller 1, car air-conditioner 2, air conditioning switch relay 3, air-conditioning request switch 4, driving engine 5, engine management system 6, ISG motor 7, ISG electric machine controller 8, electrokinetic cell 9, power battery management system 10, drive motor 11, drive motor controller 12, change-speed box 13 and wheel 14, entire car controller 1 is by CAN bus 15 connecting engine management systems 6, ISG electric machine controller 8, power battery management system 10 and drive motor controller 12, entire car controller 1 connects air-conditioning request switch 4 by wire harness, and engine management system 6 connects respectively air conditioning switch relay 3, air-conditioning request switch 4 and driving engine 5, ISG electric machine controller 8 connects respectively ISG motor 7 and electrokinetic cell 9, ISG motor 7 connecting engines 5, power battery management system 10 connects electrokinetic cell 9, drive motor controller 12 connects respectively drive motor 11 and electrokinetic cell 9, drive motor 11 connects change-speed box 13, and change-speed box 13 connects wheel 14, and car air-conditioner 2 is connecting engine 5 and air conditioning switch relay 3 respectively.The power of car air-conditioner 2 is driven by driving engine 5, hybrid power be configured as series connection type hybrid power system, driving engine 5 is connected with ISG motor 7 direct mechanical with car air-conditioner 2 respectively, so driving engine 5 does not participate in directly driving Vehicle Driving Cycle, as electrical generator, by ISG motor 7 and ISG electric machine controller 8, charged to electrokinetic cell 9, electrokinetic cell 9 connects drive motor 11, and drive motor 11 and change-speed box 13 mechanical connections, thereby drive wheel 14 to make Vehicle Driving Cycle.
In the control to car air-conditioner 2, the division of labor of entire car controller 1 and engine management system 6 is as follows:
The driving of car air-conditioner 2 is mainly completed by engine management system 6, and entire car controller 1 mainly carries out the differentiation work of car air-conditioner 2 workings and failure mode, and sends failure mode and working information by CAN bus 15 to engine management system 6.
In the present invention, driving engine 5 adopt the alignment modes (take here driving engine 5 rotating speed fixedly 2400r/min be example, according to extraneous torque demand, take different moment of torsion modes), and the air-conditioning compressor power consumption is under driving engine 5 operating points of 2400rpm, its power consumption is 4kW, and the ISG rating horsepower is got 12kW, and the transformation point A that battery charge amount (SOC) in electrokinetic cell 9 is set is 80%.The horsepower output of driving engine 5 is operated in 4kW to this line of 16kW, the advantage of this control is the work efficiency that can improve to greatest extent the load of driving engine 5 and then improve driving engine 5, thereby reduced the oil consumption of driving engine 5, improved the economy of driving engine 5 and the traveling comfort of car load.。
The concrete control method that the present invention adopts is as follows:
Step 1: after entire car controller 1 receives the information that air-conditioning request switch 4 sends, judgement is when working and the failure mode of vehicle in front, and controlled according to the mode of driving engine 5, send Engine Start Signal, engine target rotating speed and engine target torque signal by CAN bus 15 to engine management system 6;
Step 2: after engine management system 6 receives the information that air-conditioning request switch 4 sends, and after receiving Engine Start Signal, engine target rotating speed and engine target torque signal by CAN bus 15, driving engine 5 is controlled, and controlled the break-make that air conditioning switch relay 3 is realized car air-conditioner 2.
1) when vehicle during in normal mode: the control method in Table 1.
Air conditioning control method under table 1 normal mode
2) when vehicle during in failure mode: the control method in Table 2.
Air conditioning control method under table 2 failure mode
Claims (7)
1. the control method of a traditional car air-conditioner in hybrid vehicle, is characterized in that, by driving engine (5), adopts the alignment mode, that is: in the situation that fixed rotating speed, according to the demand of extraneous moment of torsion, take the mode of different moments of torsion, its concrete steps are as follows:
Step 1: after entire car controller (1) receives the information that air-conditioning request switch (4) sends, judgement is when the operating mode of vehicle in front, and controlled according to the mode of driving engine (5), send Engine Start Signal, engine target rotating speed and engine target torque signal by CAN bus (15) to engine management system (6);
Step 2: after engine management system (6) receives the information that air-conditioning request switch (4) sends, and, after receiving Engine Start Signal, engine target rotating speed and engine target torque signal by CAN bus (15), driving engine (5) is controlled;
Step 3: be the Parking operating mode if work as the operating mode of vehicle in front, the transformation point that battery charge amount in electrokinetic cell (9) is set is A, wherein the numerical value of A is between 0 to 1, judge whether the actual battery carrying capacity in electrokinetic cell (9) is less than A, when if the battery charge amount is more than or equal to A, enter step 6; When if the battery charge amount is less than A, enter step 7;
Step 4: be the driving operating mode if work as the operating mode of vehicle in front, the transformation point that battery charge amount in electrokinetic cell (9) is set is A, wherein the numerical value of A is between 0 to 1, judge whether the actual battery carrying capacity in electrokinetic cell (9) is less than A, when if the battery charge amount is more than or equal to A, enter step 5; When if the battery charge amount is less than A, enter step 7;
Step 5: judge that whether the Vehicle Driving Cycle demand power is less than the ISG rating horsepower, if the Vehicle Driving Cycle demand power is more than or equal to the ISG rating horsepower, enters step 7; If the Vehicle Driving Cycle demand power is less than the ISG rating horsepower, enter step 6;
Step 6: start the engine (5), driving engine (5) only maintains car air-conditioner (2), according to the car air-conditioner demand power, by driving engine (5), is operated under fixed rotating speed, and its horsepower output is the air-conditioning compressor consumed power;
Step 7: start the engine (5), driving engine (5) generates electricity and maintains car air-conditioner (2), be operated under fixed rotating speed the summation that its horsepower output is ISG rating horsepower and air-conditioning compressor consumed power by driving engine (5) according to the car air-conditioner demand power.
2. the control method of a kind of traditional car air-conditioner according to claim 1 in hybrid vehicle, it is characterized in that, in step 1, after entire car controller (1) receives the information that air-conditioning request switch (4) sends, in judgement during when the operating mode of vehicle in front, whether et out of order of vehicle in front is worked as in judgement simultaneously; In step 2, engine management system (6) is controlled air conditioning switch relay (3) and is realized the break-make of car air-conditioner (2) simultaneously; Increase step 8, step 8 simultaneously after step 7: control air conditioning switch relay (3) by engine management system (6) and realize the disconnection of car air-conditioner (2), thus forbidding car air-conditioner function.
3. the control method of a kind of traditional car air-conditioner according to claim 2 in hybrid vehicle, is characterized in that, if judgement enters step 8 when vehicle in front generation driving engine (5) fault.
4. the control method of a kind of traditional car air-conditioner according to claim 2 in hybrid vehicle, it is characterized in that, if judgement judges when ISG motor (7) fault occurs vehicle in front whether driving engine (5) starts, if driving engine (5) does not start, enter step 8; If driving engine (5) starts, enter step 6.
5. the control method of a kind of traditional car air-conditioner according to claim 2 in hybrid vehicle, is characterized in that, if judgement enters step 7 when vehicle in front generation drive motor (11) fault.
6. the control method of a kind of traditional car air-conditioner according to claim 2 in hybrid vehicle, it is characterized in that, if judgement judges when vehicle in front generation electrokinetic cell (9) fault whether driving engine (5) starts, if driving engine (5) does not start, enter step 8; If driving engine (5) starts, enter step 6.
7. the control system of a traditional car air-conditioner in hybrid vehicle, is characterized in that, comprises entire car controller (1), car air-conditioner (2), air conditioning switch relay (3), air-conditioning request switch (4), driving engine (5), engine management system (6), ISG motor (7), ISG electric machine controller (8), electrokinetic cell (9), power battery management system (10), drive motor (11), drive motor controller (12), change-speed box (13) and wheel (14), described entire car controller (1) is by CAN bus (15) connecting engine management system (6), ISG electric machine controller (8), power battery management system (10) and drive motor controller (12), described entire car controller (1) connects air-conditioning request switch (4) by wire harness, and described engine management system (6) connects respectively air conditioning switch relay (3), air-conditioning request switch (4) and driving engine (5), described ISG electric machine controller (8) connects respectively ISG motor (7) and electrokinetic cell (9), described ISG motor (7) connecting engine (5), described power battery management system (10) connects electrokinetic cell (9), described drive motor controller (12) connects respectively drive motor (11) and electrokinetic cell (9), described drive motor (11) connects change-speed box (13), described change-speed box (13) connects wheel (14), and described car air-conditioner (2) is connecting engine (5) and air conditioning switch relay (3) respectively.
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| CN107264513A (en) * | 2017-07-10 | 2017-10-20 | 德州富路汽车智能化研究有限公司 | A kind of electricity-generating control method of hybrid electric vehicle, equipment and system |
| WO2021143125A1 (en) * | 2020-01-19 | 2021-07-22 | 华为技术有限公司 | Thermal management system and electric vehicle |
| CN114194004A (en) * | 2020-09-02 | 2022-03-18 | 广州汽车集团股份有限公司 | Air conditioner compressor control method and device and storage medium |
| CN115742680A (en) * | 2022-12-27 | 2023-03-07 | 中国重汽集团济南动力有限公司 | Parking air conditioner power supply system and method of hybrid vehicle based on vehicle control unit |
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| CN103448728B (en) | 2016-03-02 |
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Effective date of registration: 20190318 Address after: 317000 east gate of Taizhou City, Zhejiang Province Co-patentee after: Zhejiang Geely Holding Group Co., Ltd. Patentee after: Zhejiang Geely Automobile Research Institute Co., Ltd. Address before: 311228 No. 206 Farmer's Second House in Linjiang Industrial Park, Xiaoshan District, Hangzhou City, Zhejiang Province Co-patentee before: Zhejiang Geely Automobile Research Institute Co., Ltd. Patentee before: Hangzhou Branch, Zhejiang Geely Automobile Research Institute Co., Ltd. Co-patentee before: Zhejiang Geely Holding Group Co., Ltd. |
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