CN103213581B - A kind of control method of extended-range electric vehicle engine warm-up - Google Patents
A kind of control method of extended-range electric vehicle engine warm-up Download PDFInfo
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- CN103213581B CN103213581B CN201310144684.8A CN201310144684A CN103213581B CN 103213581 B CN103213581 B CN 103213581B CN 201310144684 A CN201310144684 A CN 201310144684A CN 103213581 B CN103213581 B CN 103213581B
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Abstract
The present invention proposes a kind of control method of extended-range electric vehicle engine warm-up, to realize the object of extending driving range of high efficiency, low emission. Entire car controller carrys out control engine warming-up process according to the SOC value of the gentle electrokinetic cell of engine water, entire car controller receives after the enabled instruction that increases Cheng Danyuan, first detect engine water temperature, if engine water temperature is less than predetermined idling warming-up temperature, entire car controller is set the duration of the idling warming-up of engine according to the SOC value of the gentle electrokinetic cell of engine water, and control engine carries out idling warming-up, otherwise engine warm-up finishes; After engine idle warming-up finishes, entire car controller judges whether to need rapid warming-up according to the SOC value of the gentle electrokinetic cell of engine water, if engine water temperature is less than predetermined value lower than the SOC value of predetermined rapid warming-up temperature or electrokinetic cell, entire car controller is set engine speed and generator loading moment of torsion, and control engine carries out rapid warming-up, otherwise engine warm-up finishes.
Description
Technical field
The invention belongs to extended-range electric vehicle control technology field, specially refer to a kind of control method of extended-range electric vehicle engine warm-up.
Background technology
Along with scientific and technological progress and people's environmental consciousness strengthen, the trip mode of " low-carbon (LC), environmental protection, green " causes showing great attention to of people gradually. The research of therefore, efficiently, environmental protection, energy-saving electric vehicle has caused showing great attention to of each automobile vendor of the world. Traditional pure electric vehicle is due to the defect of electrokinetic cell energy density, and insufficient driving range becomes its obstacle popularizing. Extended-range electric vehicle has increased the increasing Cheng Danyuan being made up of engine and generator on traditional electrical motor-car basis, has effectively made up the defect of traditional electrical motor-car insufficient driving range.
Extended-range electric vehicle is the product of traditional combustion engine car, pure electric vehicle combination, except having the feature of traditional electrical motor-car, also there is following feature: 1, high fuel utilization ratio: increase Cheng Danyuan except of short duration being operated in idle speed zone, the most of the time is operated in economic zone, has improved fuel utilization ratio; 2, increase continual mileage: if electrokinetic cell electric weight is on the low side, the demand that can meet car load load and drive request by increasing Cheng Danyuan; 3, good man-machine interaction: driver can mandatory requirement increase journey unit starting by mode switch, meets different driving demands. Such as: can increase Cheng Danyuan in city suburbs force start is power battery charging, and for blocking up, travelling of noisy city provides enough electric energy.
The warming-up control that increases engine in Cheng Danyuan is part important in car load control, and it controls the economy and the discharge that whether rationally have influence on car load, is therefore necessary to find out the control method of suitable extended-range electric vehicle engine warm-up.
Summary of the invention
The object of the invention is to propose a kind of control method of extended-range electric vehicle engine warm-up, to realize rapid warming-up, allow increase Cheng Danyuan and meet the driving power demand of car load faster and betterly, realize the object of the extending driving range of high efficiency, low emission.
In the control method of extended-range electric vehicle engine warm-up of the present invention, entire car controller carrys out control engine warming-up process according to the SOC value of the gentle electrokinetic cell of engine water, key is that entire car controller receives after the enabled instruction that increases Cheng Danyuan, first detect engine water temperature, if engine water temperature is less than predetermined idling warming-up temperature, entire car controller is set the duration of the idling warming-up of engine according to the SOC value of the gentle electrokinetic cell of engine water, and control engine carries out idling warming-up, otherwise engine warm-up finishes; After engine idle warming-up finishes, entire car controller judges whether to need rapid warming-up according to the SOC value of the gentle electrokinetic cell of engine water, if engine water temperature is less than predetermined value lower than the SOC value of predetermined rapid warming-up temperature or electrokinetic cell, entire car controller is set engine speed and generator loading moment of torsion, and control engine carries out rapid warming-up, otherwise engine warm-up finishes.
Further, duration and the engine water temperature of described idling warming-up are inversely proportional to, and the duration of idling warming-up is directly proportional to the SOC value of electrokinetic cell. In the time that engine water temperature is too low, large load, high power running can cause poor discharge and efficiency, therefore need the warming-up of long period, so that water temperature promotes, discharge and efficiency thereby improve; And when the SOC value of electrokinetic cell compared with hour, automobile may be very large to the demand power of distance increasing unit, therefore must complete warming-up within a short period of time, meets the possible high-power demand of driver; And in the time that the SOC of electrokinetic cell value is larger, the power output of electrokinetic cell is just enough to meet driver's power demand, so can allow the warming-up of engine move the long period under the operating mode of idling, carry out abundant warming-up preparation for increase journey cell operation in the time that the SOC of electrokinetic cell value is lower in high-power operating mode, improve discharge.
Further, in the time of engine idle warming-up, generator is in zero load torque condition, and to avoid that engine is caused to extra burden, impact is discharged.
Further, this control method comprises manual mode and automatic mode, and described manual mode is controlled switching with automatic mode by the mode switch being connected with entire car controller; Engine under manual mode carries out in rapid warming-up process, entire car controller monitoring engine water temperature, and when engine water temperature is equal to or higher than after predetermined rapid warming-up temperature, engine warm-up finishes; Engine under automatic mode carries out in rapid warming-up process, the duration of entire car controller monitoring engine water temperature and rapid warming-up, when engine water temperature is equal to or higher than predetermined rapid warming-up temperature or rapid warming-up duration exceedes after scheduled duration, engine warm-up finishes. Under automatic mode, entire car controller is also monitored the duration of rapid warming-up, if can avoid like this engine water temperature under special circumstances cannot reach design temperature, remains at the problem that can cannot respond fast driver's request power under warm-up mode.
Further, in the time that engine starts idling warming-up, in the case of the SOC value of engine water temperature and electrokinetic cell is identical, the idling warming-up duration under automatic mode is less than the idling warming-up duration under manual mode. Because under automatic mode, increasing the startup of journey system is all generally because battery electric quantity is lower, so engine warm-up should complete as early as possible, then responds driver's power request.
Further, carry out in the process of rapid warming-up at engine, the engine speed under automatic mode is greater than the engine speed under manual mode; Generator loading moment of torsion under automatic mode is greater than the generator loading moment of torsion under manual mode, so that automatic mode can reach rapid warming-up, raises the efficiency and optimize the object of discharge.
Further, engine under automatic mode carries out in the process of rapid warming-up, engine speed and generator loading moment of torsion all increase along with the lifting of engine water temperature, so that engine has the high capacity demand that responds fast driver under good emission behaviour.
Under the prerequisite of the impact of the SOC value that the control method of extended-range electric vehicle engine warm-up of the present invention has been considered the impact of engine water temperature on motor vehicle emission and electrokinetic cell at the same time on automobile power output, rapid warming-up as much as possible, allow increase Cheng Danyuan and meet the driving power demand of car load faster and betterly, realize the object of the extending driving range of high efficiency, low emission.
Brief description of the drawings
Fig. 1 is the increasing journey systematic schematic diagram of the extended-range electric vehicle mentioned in the present invention.
Fig. 2 is the warming-up flow chart under manual mode.
Fig. 3 is the flow chart of the rapid warming-up under manual mode.
Fig. 4 is the warming-up flow chart under automatic mode.
Detailed description of the invention
Contrast accompanying drawing below, by the description to embodiment, the specific embodiment of the present invention is described in further detail as effect and the operation principle etc. of the mutual alignment between the shape of related each member, structure, each several part and annexation, each several part.
Embodiment 1:
As shown in Figure 1, the principle of the increasing journey system 1 of the extended-range electric vehicle of mentioning in the present embodiment is as follows: entire car controller 12 is connected with mode switch 14, and driver can select manual mode or automatic mode to start increasing Cheng Danyuan by mode switch 14. Entire car controller 12 is controlled the work of drive motors 10 by electric machine controller 11, control the work of generator 3 by engine controller 5, carry out the work of control engine 2 by engine controller 4, control the work of electrokinetic cell 6 by battery management unit 7; Electrokinetic cell 6 is connected with low pressure baby battery group 9 by DC-DC converter 7, thereby provides electric energy for starter motor 13. In the time starting, starter motor 13 and generator 3 can drag engine 2, and engine controller 4 control engine 2 oil spout igniting simultaneously, realize engine 2 and start.
As shown in Figure 2, driver is ato unit 2 under manual mode, and engine 2 can complete idling warming-up with the long period, and abundant warming-up also promotes engine 2 water temperatures, and then response car load energy requirement. concrete steps are as follows: entire car controller 12 receives after enabled instruction, first detect the water temperature T coolant_on of engine 2, if the water temperature T coolant_on of engine 2 is greater than predetermined idling warming-up temperature T coolant_on_set, exit warming-up, the directly power request of response car load, if water temperature T coolant_on is less than predetermined idling warming-up temperature T coolant_on_set, entire car controller 12 is set the duration tidle_base_on of the idling warming-up of engine 2 according to the SOC value of the water temperature of engine 2 and electrokinetic cell 6, and control engine 2 carries out idling warming-up. the duration tidle_base_on of idling warming-up and engine 2 water temperature T coolant_on are inversely proportional to, and the duration tidle_base_on of idling warming-up is directly proportional to the SOC value of electrokinetic cell 6. in the time of engine 2 idling warming-up, generator 3 is in zero load torque condition.
As shown in Figure 3, after engine 2 idling warming-ups finish, entire car controller 12 judges whether to need rapid warming-up according to the SOC value of engine 2 water temperature T coolant_on and electrokinetic cell 6, if engine 2 water temperature T coolant_on are less than predetermined value lower than the SOC value of predetermined rapid warming-up temperature T coolant_on_speed or electrokinetic cell 6, entire car controller 12 is set engine 2 rotation speed n speed_on and generator 3 load torque Tgen_on, and control engine 2 carries out rapid warming-up, until engine 2 water temperature T coolant_on are greater than Tcoolant_on_set, finish warming-up, if engine 2 water temperature T coolant_on are not less than predetermined value higher than the SOC value of predetermined rapid warming-up temperature T coolant_on_speed and electrokinetic cell 6, engine 2 warming-ups finish, and do not carry out rapid warming-up.
Above-mentioned rapid warming-up temperature T coolant_on_speed is higher than predetermined idling warming-up temperature T coolant_on_set.
As shown in Figure 4, under automatic mode, entire car controller 12 is monitored the SOC value of electrokinetic cell 6, when the SOC of electrokinetic cell 6 value is during lower than certain value, entire car controller 12 meeting automatic actuation engines 2, because the SOC value of electrokinetic cell 6 is now lower,, in follow-up control procedure, be mainly therefore to control foundation taking the water temperature of engine 2. Concrete steps are as follows: after entire car controller 12 ato units 2, first detect the water temperature T coolant_auto of engine 2, if the water temperature T coolant_auto of engine 2 is greater than predetermined idling warming-up temperature T setpoint, exit warming-up, the directly power request of response car load, if water temperature T coolant_auto is less than predetermined idling warming-up temperature T setpoint, entire car controller 12 is set the duration tidle_base_auto of the idling warming-up of engine 2 according to the water temperature T coolant_auto of engine 2, and control engine 2 carries out idling warming-up. The duration tidle_base_auto of idling warming-up and engine 2 water temperature T coolant_auto are inversely proportional to. In the time of engine 2 idling warming-up, generator 3 is in zero load torque condition.
After engine 2 idling warming-ups finish, entire car controller 12 judges whether to need rapid warming-up according to engine 2 water temperatures, if engine 2 water temperature T coolant_auto are equal to or higher than predetermined rapid warming-up temperature T setpoint, engine 2 warming-ups finish, and do not carry out rapid warming-up; If engine 2 water temperature T coolant_auto are lower than predetermined rapid warming-up temperature T setpoint, entire car controller 12 is set engine 2 rotation speed n speed_auto and generator 3 load torque Tgen_auto, and control engine 2 carries out rapid warming-up, when engine 2 water temperature T coolant_auto are equal to or higher than predetermined rapid warming-up temperature T setpoint or the lasting time of rapid warming-up exceedes after scheduled duration, engine 2 warming-ups finish.
Above-mentioned predetermined rapid warming-up temperature T setpoint is identical with predetermined idling warming-up temperature T setpoint.
In the time that engine 2 starts idling warming-up, in the case of the SOC value of engine 2 water temperatures and electrokinetic cell 6 is identical, the idling warming-up duration tidle_base_auto under automatic mode is less than the idling warming-up duration tidle_base_on under manual mode.
Carry out in the process of rapid warming-up at engine 2, the engine 2 rotation speed n speed_auto under automatic mode are greater than the engine 2 rotation speed n speed_on under manual mode; Generator 3 load torque Tgen_auto under automatic mode are greater than the generator 3 load torque Tgen_on under manual mode, so that automatic mode can reach rapid warming-up, raise the efficiency and optimize the object of discharge.
Engine 2 under automatic mode carries out in the process of rapid warming-up, and engine 2 rotating speeds and generator 3 load torques all increase along with the lifting of engine 2 water temperatures, so that engine 2 has the high capacity demand that responds fast driver under good emission behaviour.
Claims (6)
1. the control method of an extended-range electric vehicle engine warm-up, entire car controller carrys out control engine warming-up process according to the SOC value of the gentle electrokinetic cell of engine water, entire car controller receives after the enabled instruction that increases Cheng Danyuan, first detect engine water temperature, if engine water temperature is less than predetermined idling warming-up temperature, entire car controller is set the duration of the idling warming-up of engine according to the SOC value of the gentle electrokinetic cell of engine water, and control engine carries out idling warming-up, otherwise engine warm-up finishes; After it is characterized in that engine idle warming-up finishes, entire car controller judges whether to need rapid warming-up according to the SOC value of the gentle electrokinetic cell of engine water, if engine water temperature is less than predetermined value lower than the SOC value of predetermined rapid warming-up temperature or electrokinetic cell, entire car controller is set engine speed and generator loading moment of torsion, and control engine carries out rapid warming-up, otherwise engine warm-up finishes; This control method comprises manual mode and automatic mode, and described manual mode is controlled switching with automatic mode by the mode switch being connected with entire car controller; Engine under manual mode carries out in rapid warming-up process, entire car controller monitoring engine water temperature, and when engine water temperature is equal to or higher than after predetermined rapid warming-up temperature, engine warm-up finishes; Engine under automatic mode carries out in rapid warming-up process, the duration of entire car controller monitoring engine water temperature and rapid warming-up, when engine water temperature is equal to or higher than predetermined rapid warming-up temperature or rapid warming-up duration exceedes after scheduled duration, engine warm-up finishes.
2. the control method of extended-range electric vehicle engine warm-up according to claim 1, it is characterized in that in the time that engine starts idling warming-up, in the case of the SOC value of engine water temperature and electrokinetic cell is identical, the idling warming-up duration under automatic mode is less than the idling warming-up duration under manual mode.
3. the control method of extended-range electric vehicle engine warm-up according to claim 1, is characterized in that carrying out in the process of rapid warming-up at engine, and the engine speed under automatic mode is greater than the engine speed under manual mode; Generator loading moment of torsion under automatic mode is greater than the generator loading moment of torsion under manual mode.
4. the control method of extended-range electric vehicle engine warm-up according to claim 1, it is characterized in that the engine under automatic mode carries out in the process of rapid warming-up, engine speed and generator loading moment of torsion all increase along with the lifting of engine water temperature.
5. the control method of extended-range electric vehicle engine warm-up according to claim 1, is characterized in that the duration of described idling warming-up and engine water temperature are inversely proportional to, and the duration of idling warming-up is directly proportional to the SOC value of electrokinetic cell.
6. the control method of extended-range electric vehicle engine warm-up according to claim 1, in the time of engine idle warming-up, generator is in zero load torque condition.
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| CN103879301B (en) * | 2014-04-02 | 2016-04-13 | 广东亿纬赛恩斯新能源系统有限公司 | A kind of method of charging control of extended-range electric vehicle |
| CN105971745B (en) * | 2016-06-15 | 2019-06-04 | 北京新能源汽车股份有限公司 | Range-extended electric automobile and engine warm-up control method and device thereof |
| CN106274892B (en) * | 2016-08-26 | 2019-02-05 | 哈尔滨东安汽车发动机制造有限公司 | A kind of engine on-off control method mixing motor-car type based on the mild battery SOC of engine water |
| CN106274515B (en) * | 2016-08-31 | 2018-07-20 | 北京新能源汽车股份有限公司 | Control method and device of automobile range extender |
| JP6423026B2 (en) * | 2017-02-09 | 2018-11-14 | 本田技研工業株式会社 | Hybrid car |
| CN109955705A (en) * | 2017-12-22 | 2019-07-02 | 武汉比亚迪汽车有限公司 | A kind of plug-in hybrid device arragement construction and vehicle |
| CN108284751B (en) * | 2018-01-16 | 2020-09-22 | 浙江吉利新能源商用车有限公司 | Control method and control system for range-extended vehicle and vehicle |
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| CN112092651B (en) * | 2020-09-11 | 2022-05-27 | 北京罗克维尔斯科技有限公司 | Range extender control method and device, medium, vehicle control unit and vehicle |
| CN112590568A (en) * | 2021-01-04 | 2021-04-02 | 重庆金康赛力斯新能源汽车设计院有限公司 | Range extender control method and system |
| CN114714925A (en) * | 2022-04-28 | 2022-07-08 | 重庆金康赛力斯新能源汽车设计院有限公司 | Control method, device and system of range extender |
| CN115977817A (en) * | 2023-02-02 | 2023-04-18 | 重庆赛力斯新能源汽车设计院有限公司 | Vehicle idle speed control method and device, server and storage medium |
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