CN102431547A - Method for controlling chargeable hybrid power vehicle - Google Patents
Method for controlling chargeable hybrid power vehicle Download PDFInfo
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- CN102431547A CN102431547A CN2011103334509A CN201110333450A CN102431547A CN 102431547 A CN102431547 A CN 102431547A CN 2011103334509 A CN2011103334509 A CN 2011103334509A CN 201110333450 A CN201110333450 A CN 201110333450A CN 102431547 A CN102431547 A CN 102431547A
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- 238000000034 method Methods 0.000 title claims abstract description 18
- 239000000295 fuel oil Substances 0.000 claims abstract description 6
- 230000009466 transformation Effects 0.000 claims description 11
- 239000000446 fuel Substances 0.000 claims description 9
- 230000000694 effects Effects 0.000 abstract description 4
- 238000013459 approach Methods 0.000 abstract 1
- 238000005516 engineering process Methods 0.000 description 2
- 238000005457 optimization Methods 0.000 description 2
- 238000006243 chemical reaction Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 230000006870 function Effects 0.000 description 1
- 230000008450 motivation Effects 0.000 description 1
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/10—Internal combustion engine [ICE] based vehicles
- Y02T10/40—Engine management systems
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/60—Other road transportation technologies with climate change mitigation effect
- Y02T10/62—Hybrid vehicles
Abstract
The invention provides a method for controlling a chargeable hybrid power vehicle, and is used for better achieving an effect of an engine for requirements of the whole vehicle, reducing fuel oil consumption and improving noise vibration and harshness (NVH) performance. In the method, the running state of the engine is controlled by an engine controller according to a vehicle running stage, a state of charge (SOC) value of a power battery, and a vehicle speed; in a starting stage, the engine controller controls operating modes of the engine and a generator according to the SOC value of the power battery; in a running stage, the engine and the generator are combined into a generator set to operate, and the engine controller controls the engine to run at different preset operating points according to real-time vehicle speed situation; and if the vehicle speed is higher, a rotary speed of the engine at the preset operating points is higher. The preset operating points are set according to influence of an engine noise on the NVH performance of the whole vehicle, a power requirement of the whole vehicle, and the economy of fuel oil; and the engine is optimized according to the preset operating points, a universal characteristic curve of the engine approaches to the preset operating points.
Description
Technical field
The invention belongs to hybrid vehicle control technology field, specially refer to a kind of control method of rechargeable type hybrid vehicle.
Background technology
Hybrid vehicle is combined drive motor and engine drive system; Remedy engine-driven weakness with drive motor; Make driving engine remain on optimum condition work as far as possible, can realize functions such as engine idle shutdown, assistive drive and regenerating braking energy recovery.Therefore, hybrid vehicle had both improved the driving performance of vehicle, had improved fuel utilization ratio again, had reduced engine emission, was the anti-emission carburetor and the low oil consumption automobile of the actual exploitation of current tool meaning.
At present, mix electrical automobile and participate in working in the economic zone though can control driving engine under the mode of operation, can't give full play to driving engine best effort characteristic, engine operation condition is not optimized at driving engine.Driving engine and generator combined composition generator set in mixed the moving of connecting; Driving engine is the direct drive car load not; Engine operation condition is not influenced by car load; So just cause when car load low speed because the reduction of the SOC value of electrokinetic cell needs driving engine under the high speed higher load condition, to move, thus unfavorable to car load NVH performance; During engine cold-start, because the demand of car load, driving engine is the work in the economic zone directly in addition, is unfavorable for the HC discharging in engine cold-start stage.
Summary of the invention
The objective of the invention is to propose a kind of control method of rechargeable type hybrid vehicle, to the effect of car load demand performance driving engine, reduce fuel oil consumption and improve the NVH performance with better.
The control method of rechargeable type hybrid vehicle of the present invention, by the running state that engine controller is controlled driving engine according to the SOC value and the speed of a motor vehicle of automotive operation stage, electrokinetic cell, key is to comprise the steps:
A: the unloading phase: engine controller is controlled the mode of operation of driving engine, electrical generator according to the SOC value of electrokinetic cell;
B: travel phase: driving engine and generator combined composition generator set carry out work, and engine controller is according to real-time vehicle speed condition, and the control driving engine is chosen in operation under the different predetermined work points; The said real-time speed of a motor vehicle is high more, and the engine speed of said predetermined work point is high more.
Predetermined work point in the said B step is according to motor noise the power demand and the fuel economy of car load NVH performance impact, car load to be set; Satisfy under the power demand prerequisite of car load in assurance; Make driving engine NVH influence to car load under predetermined work point minimum; The degree of utilization of fuel oil is the highest, and optimizes the engine speed interval according to selected predetermined work point, makes the characteristic performance curve of driving engine level off to the predetermined work point.
Said predetermined work point comprises slow speed of revolution, medium speed and three predetermined work points of high rotating speed.
Further, in the said A step, engine controller detects the SOC value of electrokinetic cell, when the SOC of electrokinetic cell value when limiting the threshold values SOC1 of the transformation point that discharges, utilize engine starting and drive generator operation, be power battery charging; When the SOC of electrokinetic cell value during greater than threshold values SOC1 and less than threshold values SOC2; Engine controller is at first controlled electrical generator and is got into driving condition; Drive engine running, when engine speed is higher than threshold values N1, the engine ignition operation; This moment, driving engine and generator combined composition generator set got into driving engine and battery associated working pattern; When the SOC of electrokinetic cell value during, get into also operation of electric-only mode starting greater than threshold values SOC2; 0＜threshold values SOC1＜threshold values SOC2＜100%.
Further, in the said B step, when powered vehicle institute energy requirement during less than the generator set energy output, the generator set energy output is used for drive motor simultaneously to be satisfied and drives the car load demand and give power battery charging; When powered vehicle institute energy requirement equaled the generator set energy output, generator set only provided energy to drive car load to drive motor; When powered vehicle institute energy requirement during greater than the generator set energy output, generator set and electrokinetic cell provide energy to drive car load to drive motor jointly.
Further, in the said B step, when the SOC of electrokinetic cell value >=threshold values SOC2, get into pure electronic working stage, utilize electrokinetic cell separately for drive motor provides energy, driving engine is not worked; When the SOC of electrokinetic cell value＜threshold values SOC2, driving engine and generator combined composition generator set carry out work; Said threshold values SOC2 is greater than the threshold values SOC1 of restriction discharge transformation point and less than the threshold values SOC3 that limits electrically-charged transformation point.
The control method of rechargeable type hybrid vehicle of the present invention combines automotive operation stage, the SOC value of electrokinetic cell and the factor of the speed of a motor vehicle that engine operating state is controlled; And the predetermined work point that is directed against automobile has been done optimal design to driving engine; Under the prerequisite that satisfies the automobile power demand; Reduce motor noise to automobile NVH Effect on Performance as far as possible, improved fuel economy.
Description of drawings
Fig. 1 is the optimization diagram of circuit of the predetermined work point of driving engine;
Fig. 2 is that the variation and the driving engine of the SOC value of electrokinetic cell participated in work relationship figure.
The specific embodiment
Contrast accompanying drawing below; Through the description to embodiment, the effect of mutual alignment between the shape of specific embodiments of the invention such as related each member, structure, the each several part and annexation, each several part and principle of work etc. are done further to specify.
Embodiment 1:
The control method of the rechargeable type hybrid vehicle of present embodiment, the running state by engine controller is controlled driving engine according to the SOC value and the speed of a motor vehicle of automotive operation stage, electrokinetic cell specifically comprises the steps:
A: the unloading phase: engine controller detects the SOC value of electrokinetic cell, when the SOC of electrokinetic cell value when limiting the threshold values SOC1 of the transformation point that discharges, utilize engine starting and drive generator operation, be power battery charging; When the SOC of electrokinetic cell value during greater than threshold values SOC1 and less than threshold values SOC2; Engine controller is at first controlled electrical generator and is got into driving condition; Drive engine running, when engine speed is higher than threshold values N1, the engine ignition operation; This moment, driving engine and generator combined composition generator set got into driving engine and battery associated working pattern; When the SOC of electrokinetic cell value during, get into also operation of electric-only mode starting greater than threshold values SOC2; 0＜threshold values SOC1＜threshold values SOC2＜100%;
B: travel phase: driving engine and generator combined composition generator set carry out work, and engine controller is according to real-time vehicle speed condition, and the control driving engine is chosen in operation under the different predetermined work points; The said real-time speed of a motor vehicle is high more, and the engine speed of said predetermined work point is high more; When powered vehicle institute energy requirement during less than the generator set energy output, the generator set energy output is used for drive motor simultaneously to be satisfied and drives the car load demand and give power battery charging; When powered vehicle institute energy requirement equaled the generator set energy output, generator set only provided energy to drive car load to drive motor; When powered vehicle institute energy requirement during greater than the generator set energy output, generator set and electrokinetic cell provide energy to drive car load to drive motor jointly.Utilize the generator set energy output to come directly to be the drive motor supplying energy as far as possible, can avoid the loss in efficiency of electric power, improved the whole efficiency of system greatly through the battery conversion.
Predetermined work point in the B step is according to motor noise the power demand and the fuel economy of car load NVH performance impact, car load to be set; Satisfy under the power demand prerequisite of car load in assurance; Make driving engine NVH influence to car load under predetermined work point minimum; The degree of utilization of fuel oil is the highest, and optimizes the engine speed interval according to selected predetermined work point, makes the characteristic performance curve of driving engine level off to the predetermined work point.
Specifically as shown in Figure 1; The optimization and the deterministic process of driving engine predetermined work point are following: at first according to the car load design objective; Driving engine, electrical generator, drive motor are carried out preliminary type selecting; Then according to universal characteristic curve of engine, generator for electricity generation power moment of torsion, the drive performance of drive motor and the operating condition of car load, three operation points of initial option driving engine.When the speed of a motor vehicle lower (being lower than 50 kilometers/hour), car load is little to power demand, and consider that the vibration noise of driving engine is bigger to the influence of car load this moment, confirms that driving engine works under slow speed of revolution point; When vehicle goes under the medium speed of a motor vehicle (50～75 kilometers/hour), mainly consider the fuel economy of driving engine this moment, therefore be chosen in the engine fuel degree of utilization and compare and work under the higher medium speed point; When vehicle goes under high speed (being higher than 90 kilometers/hour); This moment is very big to engine power demand; Other noise covers because vehicle descend at a high speed that the engine section acoustic pressure can be made an uproar by wind, make an uproar in the road etc., works under than higher and high rotating speed point that torque ratio is bigger at fuel utilization ratio so publish motivation this moment.Through above consideration, initial option driving engine predetermined work point is respectively slow speed of revolution, medium speed and three predetermined work points of high rotating speed.Calculate checking through software emulation; Whether these three operation points can bring into play engine characteristics respectively; Reducing the car load noise and vibration better improves fuel utilization ratio and guarantees that engine output levels off to the car load power demand as far as possible; If can not, then reselect the operation point and calculate contrast, up to final three operation points selecting optimum.And in view of the above driving engine is optimized, it is interval to optimize engine speed, and the characteristic performance curve of driving engine is leveled off near the predetermined work point.
As shown in Figure 2, in the B step, when the SOC of electrokinetic cell value >=threshold values SOC2, get into pure electronic working stage, utilize electrokinetic cell separately for drive motor provides energy, driving engine is not worked; When the SOC of electrokinetic cell value＜threshold values SOC2, driving engine and generator combined composition generator set carry out work; Said threshold values SOC2 can protect electrokinetic cell like this greater than the threshold values SOC1 of restriction discharge transformation point and less than the threshold values SOC3 that limits electrically-charged transformation point, avoids it to cross and puts or overcharge.
Claims (8)
1. the control method of a rechargeable type hybrid vehicle, the running state by engine controller is controlled driving engine according to the SOC value and the speed of a motor vehicle of automotive operation stage, electrokinetic cell is characterized in that comprising the steps:
A: the unloading phase: engine controller is controlled the mode of operation of driving engine, electrical generator according to the SOC value of electrokinetic cell;
B: travel phase: driving engine and generator combined composition generator set carry out work, and engine controller is according to real-time vehicle speed condition, and the control driving engine is chosen in operation under the different predetermined work points; The said real-time speed of a motor vehicle is high more, and the engine speed of said predetermined work point is high more.
2. the control method of rechargeable type hybrid vehicle according to claim 1; It is characterized in that the predetermined work point in the said B step is according to motor noise the power demand and the fuel economy of car load NVH performance impact, car load to be set; Satisfy under the power demand prerequisite of car load in assurance; Make driving engine NVH influence to car load under predetermined work point minimum; The degree of utilization of fuel oil is the highest, and optimizes the engine speed interval according to selected predetermined work point, makes the characteristic performance curve of driving engine level off to the predetermined work point.
3. the control method of rechargeable type hybrid vehicle according to claim 2 is characterized in that said predetermined work point comprises slow speed of revolution, medium speed and three predetermined work points of high rotating speed.
4. according to the control method of claim 1 or 2 or 3 described rechargeable type hybrid vehicles; It is characterized in that in the said A step; Engine controller detects the SOC value of electrokinetic cell; When the SOC of electrokinetic cell value during less than the threshold values SOC1 of restriction discharge transformation point, utilize engine starting and drive generator operation, be power battery charging; When the SOC of electrokinetic cell value during greater than threshold values SOC1 and less than threshold values SOC2; Engine controller is at first controlled electrical generator and is got into driving condition; Drive engine running, when engine speed is higher than threshold values N1, the engine ignition operation; This moment, driving engine and generator combined composition generator set got into driving engine and battery associated working pattern; When the SOC of electrokinetic cell value during, get into also operation of electric-only mode starting greater than threshold values SOC2; 0＜threshold values SOC1＜threshold values SOC2＜100%.
5. according to the control method of claim 1 or 2 or 3 described rechargeable type hybrid vehicles; It is characterized in that in the said B step; When powered vehicle institute energy requirement during less than the generator set energy output, the generator set energy output is used for drive motor simultaneously to be satisfied and drives the car load demand and give power battery charging; When powered vehicle institute energy requirement equaled the generator set energy output, generator set only provided energy to drive car load to drive motor; When powered vehicle institute energy requirement during greater than the generator set energy output, generator set and electrokinetic cell provide energy to drive car load to drive motor jointly.
6. the control method of rechargeable type hybrid vehicle according to claim 5; It is characterized in that in the said B step, when the SOC of electrokinetic cell value >=threshold values SOC2, get into pure electronic working stage; Utilize electrokinetic cell separately for drive motor provides energy, driving engine is not worked; When the SOC of electrokinetic cell value＜threshold values SOC2, driving engine and generator combined composition generator set carry out work; Said threshold values SOC2 is greater than the threshold values SOC1 of restriction discharge transformation point and less than the threshold values SOC3 that limits electrically-charged transformation point.
7. the control method of rechargeable type hybrid vehicle according to claim 4; It is characterized in that in the said B step; When powered vehicle institute energy requirement during less than the generator set energy output, the generator set energy output is used for drive motor simultaneously to be satisfied and drives the car load demand and give power battery charging; When powered vehicle institute energy requirement equaled the generator set energy output, generator set only provided energy to drive car load to drive motor; When powered vehicle institute energy requirement during greater than the generator set energy output, generator set and electrokinetic cell provide energy to drive car load to drive motor jointly.
8. the control method of rechargeable type hybrid vehicle according to claim 7; It is characterized in that in the said B step, when the SOC of electrokinetic cell value >=threshold values SOC2, get into pure electronic working stage; Utilize electrokinetic cell separately for drive motor provides energy, driving engine is not worked; When the SOC of electrokinetic cell value＜threshold values SOC2, driving engine and generator combined composition generator set carry out work; Said threshold values SOC2 is greater than the threshold values SOC1 of restriction discharge transformation point and less than the threshold values SOC3 that limits electrically-charged transformation point.
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Cited By (19)
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| CN102658817A (en) * | 2012-05-07 | 2012-09-12 | 奇瑞汽车股份有限公司 | Control method for realizing purely-electric function of hybrid vehicle |
| CN103448526A (en) * | 2013-08-07 | 2013-12-18 | 广州市铭珠电控设备科技有限公司 | Multi-energy electric automobile teaching device and implement method thereof |
| CN104192141A (en) * | 2014-08-13 | 2014-12-10 | 潍柴动力股份有限公司 | Power control method and system for hybrid vehicle |
| CN105438169A (en) * | 2015-12-11 | 2016-03-30 | 广州汽车集团股份有限公司 | Control method and device for range-extending type vehicle engine |
| CN105492281A (en) * | 2013-08-29 | 2016-04-13 | 本田技研工业株式会社 | Electricity-generation control device and electricity-generation control method |
| CN105774798A (en) * | 2016-03-25 | 2016-07-20 | 北京新能源汽车股份有限公司 | Electric automobile range extending type control method, controller and electric automobile |
| CN105922986A (en) * | 2016-05-24 | 2016-09-07 | 北京新能源汽车股份有限公司 | Stroke-increasing type electric automobile and mode switching control method and system thereof |
| CN106285976A (en) * | 2016-08-31 | 2017-01-04 | 北京新能源汽车股份有限公司 | The control method of a kind of extended-range automobile engine, device and extended-range automobile |
| CN106611886A (en) * | 2015-10-26 | 2017-05-03 | 比亚迪股份有限公司 | Discharging method and system for hybrid vehicle |
| US9651014B2 (en) | 2012-10-22 | 2017-05-16 | Techtronic Outdoor Products Technology Limited | Double source battery charger |
| CN109630288A (en) * | 2018-11-23 | 2019-04-16 | 浙江吉利新能源商用车有限公司 | Electricity-generating method, the apparatus and system of dual fuel engine vehicle |
| CN109808674A (en) * | 2017-11-16 | 2019-05-28 | 北汽（镇江）汽车有限公司 | Method for controlling hybrid power vehicle, device, entire car controller and automobile |
| CN111152774A (en) * | 2020-01-09 | 2020-05-15 | 宁波吉利汽车研究开发有限公司 | Hybrid vehicle energy management method, hybrid vehicle energy management device, electronic equipment and storage medium |
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| CN111775724A (en) * | 2020-07-29 | 2020-10-16 | 浙江吉利新能源商用车集团有限公司 | Method for selecting and switching working points of range extender |
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| CN106285976B (en) * | 2016-08-31 | 2019-05-03 | 北京新能源汽车股份有限公司 | A kind of control method of extended-range automobile engine, device and extended-range automobile |
| CN106285976A (en) * | 2016-08-31 | 2017-01-04 | 北京新能源汽车股份有限公司 | The control method of a kind of extended-range automobile engine, device and extended-range automobile |
| CN109808674A (en) * | 2017-11-16 | 2019-05-28 | 北汽（镇江）汽车有限公司 | Method for controlling hybrid power vehicle, device, entire car controller and automobile |
| CN109630288A (en) * | 2018-11-23 | 2019-04-16 | 浙江吉利新能源商用车有限公司 | Electricity-generating method, the apparatus and system of dual fuel engine vehicle |
| CN109630288B (en) * | 2018-11-23 | 2022-04-22 | 浙江吉利新能源商用车集团有限公司 | Power generation method, device and system of dual-fuel engine vehicle |
| CN111942388A (en) * | 2019-05-17 | 2020-11-17 | 北京车和家信息技术有限公司 | Engine start-stop control method and device and hybrid power vehicle |
| CN111152774A (en) * | 2020-01-09 | 2020-05-15 | 宁波吉利汽车研究开发有限公司 | Hybrid vehicle energy management method, hybrid vehicle energy management device, electronic equipment and storage medium |
| CN111703414A (en) * | 2020-03-27 | 2020-09-25 | 北京致行慕远科技有限公司 | Method for controlling an all-terrain vehicle |
| CN111775724A (en) * | 2020-07-29 | 2020-10-16 | 浙江吉利新能源商用车集团有限公司 | Method for selecting and switching working points of range extender |
| CN112009454A (en) * | 2020-08-20 | 2020-12-01 | 江西五十铃汽车有限公司 | Method for optimizing oil consumption of extended range hybrid electric vehicle |
| CN112054257A (en) * | 2020-09-21 | 2020-12-08 | 北京罗克维尔斯科技有限公司 | Power battery charging and discharging control method and device |
| CN113978447A (en) * | 2021-10-27 | 2022-01-28 | 岚图汽车科技有限公司 | Torque control method and related equipment |
| CN113978447B (en) * | 2021-10-27 | 2024-01-09 | 岚图汽车科技有限公司 | Torque control method and related equipment |
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