CN101979265A - Method for controlling stroke lengthening of serially connected pluggable electric vehicle - Google Patents
Method for controlling stroke lengthening of serially connected pluggable electric vehicle Download PDFInfo
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Abstract
The invention provides a method for controlling stroke lengthening of a serially connected pluggable electric vehicle. The system adopted by the method consists of an engine, a control unit EMS of the engine, a generator, a controller IPU of the generator and a whole vehicle controller HCU. The controlling method comprises the following steps of: (1) setting starting conditions of a stroke lengthening module; (2) starting the stroke lengthening module; and (3) controlling operation of the stroke lengthening module. In the method, a small starting motor which starts the engine can be saved, the engine can be directly started by the generator with high efficiency so as to reduce cost and save arrangement space of parts and components, simultaneously a command is sent to the IPU through the HCU to ensure the generator starts the engine, so that the success rate of one-time start is higher, and the starting effect and the communication command are simpler compared with those obtained when the small starting motor starts the engine. Meanwhile, in the method, several operation points with better economy can be selected on an external characteristic curve of the engine so as to reduce energy consumption and meet the requirement of electricity utilization of the whole vehicle.
Description
Technical field
The invention belongs to Full Vehicle System control field, be specifically related to increase journey the travel startup and the progress control method of module.
Background technology
Energy shock and ecological deterioration are two big factors of restriction economic development.The new of research energy-conserving and environment-protective can automobile be one of effective means that overcomes the above problems, and the plug-in electronlmobil of wherein connecting is the focus of researching and developing at present.The cardinal principle of this battery-driven car is: supply with the drive motor energy by lithium cell and come powered vehicle to travel, when the energy shortage of lithium cell, need start the engine to drive generator for electricity generation, the electricity that sends makes vehicle continue to travel by drive motor.Wherein driving engine, electrical generator, control unit of engine EMS, engine controller IPU are referred to as and increase the journey module.Wherein driving engine does not participate in the car load driving, only drives generator for electricity generation.In the prior art, mostly be by setting the point of a point, though the setting better economy of this point can not satisfy the torque demand of other operating mode of car load as engine power generation operation.Have under the bigger torque demand at car load, can not satisfy the power demand of car load.
Summary of the invention
The objective of the invention is to propose the plug-in electronlmobil of a kind of series connection and increase the process control method, mainly the problem of Xie Jueing is: (1) increases the journey module and starts, and promptly in the car load operational process, how driving engine starts and how to drive generator for electricity generation.(2) operation that increases the journey module is controlled, and promptly increases the journey module and starts how to realize that a plurality of operating points of driving engine switch afterwards.
In order to realize above-mentioned control method, the set of systems that the present invention adopts becomes: driving engine, control unit of engine EMS, electrical generator, engine controller IPU, entire car controller HCU.Connection mode between the above assembly is: the output shaft of driving engine and the rotor of electrical generator are rigidly connected; The communication relation takes place in control unit of engine monitoring engine running state between while and the entire car controller HCU; The communication relation takes place in engine controller IPU monitoring electrical generator state between while and the entire car controller HCU.
Control process is as follows:
(1) set the entry condition that increases the journey module: in the process that vehicle is moving, the remaining capacity SOC signal of battery sends to entire car controller HCU and judges that when SOC reached threshold values A, driving engine just started; Described threshold values A is the maxim in following three limiting condition values: the minimum operation limit value of (1) this car battery; (2) calculate resultant electrokinetic cell SOC requirements according to car load low-voltage electrical appliance electrobalance; (3) can satisfy driving engine and start the battery discharge power of requirement smoothly to cooresponding SOC value;
(2) increasing the journey module starts: when battery reaches above-mentioned threshold values A, entire car controller HCU sends a demand torque order to engine controller IPU, engine controller IPU control electrical generator start the engine, driving engine enters idle state by halted state;
(3) increase journey module operation control: after increasing the startup of journey module, car load enters driving engine and drives generator for electricity generation energy supply pattern, by the chaufeur step on the accelerator, the torque demand signal of car load is passed to entire car controller HCU, this signal is a voltage signal; Entire car controller HCU obtains the demand torque of car load according to described voltage signal, and this demand torque is sent to control unit of engine EMS, control unit of engine EMS according to this demand torque control engine operation at one of operating point 1-3; The car load demand torque of the described operating point 1 corresponding acceleration pedal degree of depth between 0% ~ 30%, the electric weight that this moment, driving engine sent are used for car load and drive, and unnecessary electric weight charges the battery; The operating point 2 corresponding acceleration pedal degree of depth are 30% ~ 60% o'clock car load demand torque, and the electric weight that this moment, driving engine sent only is used for car load and drives; The operating point 3 corresponding acceleration pedal degree of depth are greater than 60% less than 80% o'clock car load demand torque, and the electric energy that driving engine sends satisfies the dynamic property demand under the car load max. climb slope; When the acceleration pedal degree of depth greater than 80% the time, control unit of engine EMS limiting engine horsepower output, driving engine are still in 3 times work of operating point.
The present invention can save the little starter motor of start the engine, directly use the electrical generator start the engine, more efficient, reduced cost, saved the arrangement space of parts, instructed to IPU by HCU simultaneously, allowed the electrical generator start the engine, disposable startup has higher success rate, and starts effect, communication instruction than more succinct with little starter motor start the engine.Simultaneously, the present invention can select the better operating point of several economy on the engine test bench characteristic curve, reduced energy consumption, also satisfies the car load need for electricity simultaneously.
Description of drawings
Fig. 1 increases journey module operation control block diagram.
Fig. 2 engine working point control algorithm.
The specific embodiment
Below in conjunction with description of drawings specific implementation process of the present invention:
The present invention adopts driving engine, control unit of engine EMS, electrical generator, engine controller IPU, entire car controller HCU composition to increase the journey module.Connection mode between the above assembly is: the output shaft of driving engine and the rotor of electrical generator are rigidly connected; The communication relation takes place in control unit of engine monitoring engine running state between while and the entire car controller HCU; The communication relation takes place in engine controller IPU monitoring electrical generator state between while and the entire car controller HCU.
Referring to Fig. 1, increase journey module entry condition: in the process that vehicle is moving, the remaining capacity SOC signal of battery sends to HCU and judges that when SOC reached threshold values A, driving engine just can start.Threshold values A is the maxim in following three limiting condition values: the minimum operation limit value of (1) this car battery; (2) calculate resultant electrokinetic cell SOC requirements according to car load low-voltage electrical appliance electrobalance; (3) can satisfy driving engine and start the battery discharge power of requirement smoothly to cooresponding SOC value.
When battery reached above-mentioned threshold values A, entire car controller HCU sent a demand torque order to engine controller IPU, engine controller IPU control electrical generator start the engine, and driving engine enters idle state by halted state;
Increase journey module operation control: after increasing the startup of journey module, car load enters driving engine and drives generator for electricity generation energy supply pattern.The acceleration pedal of chaufeur is trampled, and the torque demand signal of car load is passed to HCU, and this signal is a voltage signal.HCU obtains the demand torque of car load according to this signal, and this demand torque needs drive motor controller to carry out.In order to satisfy the demand power of car load, the while is considered economical again, and the present invention designs a certain specific operating point work of driving engine among operating mode 1-3 that allows.Wherein, definite principle of operating point 1 and operating point 2 is: under this operating point, the fuel consumption rate of driving engine is lower, better economy; Definite principle of operating point 3 is: the electric energy that driving engine sends under this operating point can satisfy the dynamic property demand under the car load max. climb slope.Economy is considered in the setting that is operating point 1,2, and dynamic property is considered in the setting of operating point 3.
Referring to Fig. 2, the cooresponding car load demand torque of operating mode 1-3 situation is:
The operating point 1 corresponding pedal degree of depth was at 0% ~ 30% o'clock car load demand torque, and driving engine is with fixedly operating point 1 operation, and the electric weight that this moment, driving engine sent is used for car load and drives, and unnecessary electric weight charges the battery.
2 pairs of operating modes should the pedal degree of depth be 30% ~ 60% o'clock car load demand torque, and driving engine is with fixedly operating point 2 operations, and the electric weight that this moment, driving engine sent only is used for car load and drives.
The operating mode 3 corresponding pedal degree of depth are greater than 60% and less than 80% o'clock car load demand torque, and driving engine satisfies the bigger acceleration demand of car load in operating point 3 operations, the NVH of this moment and discharge relatively poor.This point be provided as the standby function point.When the pedal degree of depth greater than 80% the time, engine output is limited, still in 3 times work of operating point.
Among the figure, dotted line statement drive motor actual demand power, solid line is represented engine power generation power.
Claims (1)
1. the plug-in electronlmobil of series connection increases the process control method, described control method realizes that by the journey module of being made up of driving engine, control unit of engine EMS, electrical generator, engine controller IPU, entire car controller HCU that increases the connection mode between each assembly is: the output shaft of driving engine and the rotor of electrical generator are rigidly connected; The communication relation takes place in control unit of engine monitoring engine running state between while and the entire car controller HCU; The communication relation takes place in engine controller IPU monitoring electrical generator state between while and the entire car controller HCU;
Control process is as follows:
(1) set the entry condition that increases the journey module: in the process that vehicle is moving, the remaining capacity SOC signal of battery sends to entire car controller HCU and judges that when SOC reached threshold values A, driving engine just started; Described threshold values A is the maxim in following three limiting condition values: the minimum operation limit value of (1) this car battery; (2) calculate resultant electrokinetic cell SOC requirements according to car load low-voltage electrical appliance electrobalance; (3) can satisfy driving engine and start the battery discharge power of requirement smoothly to cooresponding SOC value;
(2) increasing the journey module starts: when battery reaches above-mentioned threshold values A, entire car controller HCU sends a demand torque order to engine controller IPU, engine controller IPU control electrical generator start the engine, driving engine enters idle state by halted state;
(3) increase journey module operation control: after increasing the startup of journey module, car load enters driving engine and drives generator for electricity generation energy supply pattern, by the chaufeur step on the accelerator, the torque demand signal of car load is passed to entire car controller HCU, this signal is a voltage signal; Entire car controller HCU obtains the demand torque of car load according to described voltage signal, and this demand torque is sent to control unit of engine EMS, control unit of engine EMS according to this demand torque control engine operation at one of operating point 1-3; The car load demand torque of the described operating point 1 corresponding acceleration pedal degree of depth between 0% ~ 30%, the electric weight that this moment, driving engine sent are used for car load and drive, and unnecessary electric weight charges the battery; The operating point 2 corresponding acceleration pedal degree of depth are 30% ~ 60% o'clock car load demand torque, and the electric weight that this moment, driving engine sent only is used for car load and drives; The operating point 3 corresponding acceleration pedal degree of depth are greater than 60% less than 80% o'clock car load demand torque, and the electric energy that driving engine sends satisfies the dynamic property demand under the car load max. climb slope; When the acceleration pedal degree of depth greater than 80% the time, control unit of engine EMS limiting engine horsepower output, driving engine are still in 3 times work of operating point.
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Cited By (18)
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| CN102267453A (en) * | 2011-05-17 | 2011-12-07 | 奇瑞汽车股份有限公司 | Energy management method for stroke-increased electric motor car |
| CN102275517A (en) * | 2011-05-31 | 2011-12-14 | 北京高峰新扬汽车技术有限公司 | Electric vehicle as well as range extender, range-extending control system and range-extending control method thereof |
| CN102745092A (en) * | 2012-07-27 | 2012-10-24 | 浙江吉利汽车研究院有限公司杭州分公司 | Control method and control device for extended range type hybrid car generating set |
| CN102795115A (en) * | 2012-08-27 | 2012-11-28 | 奇瑞汽车股份有限公司 | Power generation control method of extended range type electric automobile |
| CN103101445A (en) * | 2011-11-10 | 2013-05-15 | 长春易控汽车电子有限公司 | Working mode control method for range extender |
| CN103523006A (en) * | 2013-11-01 | 2014-01-22 | 北京北内创意电控发动机有限责任公司 | Engine control method and device of extended-range type electric vehicle |
| CN103863300A (en) * | 2012-12-07 | 2014-06-18 | 北汽福田汽车股份有限公司 | Control method of extended range type electric vehicle |
| CN104163114A (en) * | 2014-07-22 | 2014-11-26 | 浙江大学 | Whole vehicle energy management method for internal combustion generating extend range type electric vehicle |
| CN104386059A (en) * | 2014-11-15 | 2015-03-04 | 奇瑞汽车股份有限公司 | Mode control method for plug-in hybrid vehicle motors |
| CN104393355A (en) * | 2014-10-27 | 2015-03-04 | 潍柴动力股份有限公司 | Electric balance control method and device of power battery |
| CN105459844A (en) * | 2015-12-30 | 2016-04-06 | 北京理工大学 | Multi-mode energy management method for extended-range electric vehicle |
| CN104329178B (en) * | 2014-09-05 | 2017-04-05 | 北京新能源汽车股份有限公司 | Control method of range extender engine of pure electric vehicle camshaft-free sensor |
| CN109808514A (en) * | 2019-01-29 | 2019-05-28 | 浙江吉利新能源商用车集团有限公司 | A kind of distance increasing unit device and its control method for vehicle |
| CN111469714A (en) * | 2020-04-24 | 2020-07-31 | 上海元城汽车技术有限公司 | Starting control method, device, equipment and storage medium of extended range electric vehicle |
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| CN102267453A (en) * | 2011-05-17 | 2011-12-07 | 奇瑞汽车股份有限公司 | Energy management method for stroke-increased electric motor car |
| CN102275517A (en) * | 2011-05-31 | 2011-12-14 | 北京高峰新扬汽车技术有限公司 | Electric vehicle as well as range extender, range-extending control system and range-extending control method thereof |
| CN103101445A (en) * | 2011-11-10 | 2013-05-15 | 长春易控汽车电子有限公司 | Working mode control method for range extender |
| CN103101445B (en) * | 2011-11-10 | 2014-12-24 | 长春易控汽车电子有限公司 | Working mode control method for range extender |
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| CN102745092B (en) * | 2012-07-27 | 2015-11-25 | 浙江吉利汽车研究院有限公司杭州分公司 | The control method of extended-range hybrid power car generator set and control setup |
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| CN104163114A (en) * | 2014-07-22 | 2014-11-26 | 浙江大学 | Whole vehicle energy management method for internal combustion generating extend range type electric vehicle |
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