CN105752084B - A kind of new-energy automobile energy optimizing method - Google Patents
A kind of new-energy automobile energy optimizing method Download PDFInfo
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- CN105752084B CN105752084B CN201410786761.4A CN201410786761A CN105752084B CN 105752084 B CN105752084 B CN 105752084B CN 201410786761 A CN201410786761 A CN 201410786761A CN 105752084 B CN105752084 B CN 105752084B
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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
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- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
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Abstract
The present invention relates to a kind of new-energy automobile energy optimizing methods, the following steps are included: 1) during driving, entire car controller can acquire current vehicle velocity V, acceleration a in real time, in conjunction with the current input of driver: gear, accelerator open degree, driving mode and brake switch, to judge that the operation of current driver's is intended to: starting to walk, accelerate, overtake other vehicles, brake, slide or normally drive a vehicle；2) driver is determined in the power demand under different driving intentions and the corresponding relationship between pedal opening and speed, in conjunction with motor, the efficiency chart of engine, the power of reasonable distribution power of motor and engine, it is ensured that capacity usage ratio highest.The present invention can be improved the energy utilization efficiency of vehicle, effectively promote pure electric vehicle continual mileage, reduce vehicle average fuel consumption；Improve the driving experience of driver, it is ensured that operator demand can be timely responded under various operating conditions；Make engine, driving motor work in high efficient district, similarly configures lower raising vehicle dynamic property.
Description
Technical field
The present invention relates to a kind of new-energy automobile energy optimizing methods.
Background technique
As energy environment is increasingly severe, emission regulation is increasingly strict, each main engine plants are proposed pure electric vehicle, mixing one after another
The new-energy automobiles such as power vehicle, extended-range automobile reduce the purpose of vehicle average fuel consumption to reach alleviation Pressure on Energy.By
In the limitation of current new energy car battery technology, the energy density of battery system is well below fuel oil, therefore in new energy vapour
Che Zhong, how to effectively improve energy utilization efficiency becomes reduction vehicle discharge, improves the key of new-energy automobile cost performance
Place.
Existing new-energy automobile is energy-optimised in order to realize, is mainly stepped on by the throttle of battery capacity and current driver's
Plate inputs the output torque to determine power distribution and motor, engine, but (starting accelerates, super in different driving phases
Vehicle is braked, is slided) demand of driver is different, therefore fixed prioritization scheme is likely to result in output power and exceeds
The case where operator demand, so that capacity usage ratio be caused to decline.
Summary of the invention
The present invention proposes a kind of new-energy automobile energy optimizing method, and the power that can analyze driver under different operating conditions needs
It asks；The power demand of driver is subjected to reasonable distribution, it is ensured that capacity usage ratio highest；Comprehensively consider vehicle remaining capacity, it is right
Vehicle high pressure auxiliary carries out energy management, improves energy utilization efficiency.
The technical scheme of the present invention is realized as follows:
A kind of new-energy automobile energy optimizing method, comprising the following steps:
1) during driving, entire car controller can acquire current vehicle velocity V, acceleration a in real time, work as in conjunction with driver
Preceding input: gear, accelerator open degree, driving mode and brake switch, to judge that the operation of current driver's is intended to: starting,
Accelerate, overtake other vehicles, brake, slide or normally drives a vehicle；
2) it determines that power demand of the driver under different driving intentions is corresponding between pedal opening and speed to close
System, in conjunction with motor, the efficiency chart of engine, the power of reasonable distribution power of motor and engine, it is ensured that capacity usage ratio highest；
The desired acceleration a of driver is obtained according to current vehicle speed V and accelerator open degree, it is current desired whole to obtain driver
Vehicle output power Preq, it is current it is expected that power both provide energy by battery, energy can also be provided by engine power generation
Amount, it is assumed that the power obtained from battery is Pbat, the energy obtained from engine power generation is Peng, to meet the power of driver
Demand should meet following condition:
Preq=Pbat+Peng；
When exporting current power, the efficiency of battery is ηbat, engine efficiency ηeng, then the efficiency of current vehicle energy
Are as follows:
When driver selects economic model, it is necessary to the case where meeting current vehicle efficiency highest, it is assumed that present energy
Shared i kind scheme is distributed, then to the realization vehicle energetic optimum when speed is V, and acceleration is a, needs to meet:
It can be obtained by optimal energy allocation plan under different speed and acceleration according to the above method, will test
As a result map figure, the foundation distributed as energy under different operating conditions are organized into.
Further, when high pressure auxiliary of the driver to vehicle has demand, comprehensively consider current electric quantity, whole vehicle state etc.
Factor is allocated the power of high pressure auxiliary.
The invention has the benefit that
1, the energy utilization efficiency of vehicle is improved, pure electric vehicle continual mileage is effectively promoted, reduces vehicle average fuel consumption；
2, improve the driving experience of driver, it is ensured that operator demand can be timely responded under various operating conditions；
3, make engine, driving motor work in high efficient district, similarly configure lower raising vehicle dynamic property.
Detailed description of the invention
Fig. 1 is the flow chart of new-energy automobile energy optimizing method described in the embodiment of the present invention.
Specific embodiment
Fig. 1 is the flow chart of energy optimizing method of the invention, after acquisition whole vehicle state and driver's input, first
Determine the current operating condition of vehicle.After driving cycle determines, the power demand for comprehensively considering auxiliary calculates current working driving
The integrated demand power of member, is then allocated power, determines and demand power is respectively issued to motor and hair after allocation plan
Motivation.
New-energy automobile energy optimizing method described in the embodiment of the present invention, comprising the following steps:
1) during driving, entire car controller can acquire current vehicle velocity V, acceleration a in real time, work as in conjunction with driver
Preceding input: gear, accelerator open degree, driving mode and brake switch, to judge that the operation of current driver's is intended to: starting,
Accelerate, overtake other vehicles, brake, slide or normally drives a vehicle；
2) it determines that power demand of the driver under different driving intentions is corresponding between pedal opening and speed to close
System, in conjunction with motor, the efficiency chart of engine, the power of reasonable distribution power of motor and engine, it is ensured that capacity usage ratio highest；
The desired acceleration a of driver is obtained according to current vehicle speed V and accelerator open degree, it is current desired whole to obtain driver
Vehicle output power Preq, it is current it is expected that power both provide energy by battery, energy can also be provided by engine power generation
Amount, it is assumed that the power obtained from battery is Pbat, the energy obtained from engine power generation is Peng, to meet the power of driver
Demand should meet following condition:
Preq=Pbat+Peng；
When exporting current power, the efficiency of battery is ηbat, engine efficiency ηeng, then the efficiency of current vehicle energy
Are as follows:
When driver selects economic model, it is necessary to the case where meeting current vehicle efficiency highest, it is assumed that present energy
Shared i kind scheme is distributed, then to the realization vehicle energetic optimum when speed is V, and acceleration is a, needs to meet:
It can be obtained by optimal energy allocation plan under different speed and acceleration according to the above method, will test
As a result map figure, the foundation distributed as energy under different operating conditions are organized into.
Further, when high pressure auxiliary of the driver to vehicle has demand, comprehensively consider current electric quantity, whole vehicle state etc.
Factor is allocated the power of high pressure auxiliary.
New-energy automobile energy optimizing method of the invention has been applied on a extended-range hybrid electric vehicle, practical
Using showing that the energy optimizing method can be effectively reduced the average fuel consumption of vehicle, the use cost of user is reduced.
Key of the invention is the power distribution table under different operating conditions, and the power distribution of different operating conditions is by tabling look-up
It arrives, initial table need to be obtained by emulation, and need to carry out real-time update to table with calibration, it is ensured that finally determining table
Lattice can make the capacity usage ratio highest of vehicle.
Innovation point of the invention:
1, the intention for analyzing driver, formulates the energy-optimised mode under different intentions；
2, when confirming final torque, from energy efficiency angle contrast's different calculation methods, optimal case is obtained；
3, according to the state of power original part, different-energy Managed Solution is formulated under different state of charge.
The foregoing is merely illustrative of the preferred embodiments of the present invention, is not intended to limit the invention, all in essence of the invention
Within mind and principle, any modification, equivalent replacement, improvement and so on be should all be included in the protection scope of the present invention.
Claims (2)
1. a kind of new-energy automobile energy optimizing method, which comprises the following steps:
1) during driving, entire car controller can acquire current vehicle velocity V, acceleration a in real time, current in conjunction with driver
Input: gear, accelerator open degree, driving mode and brake switch, to judge that the operation of current driver's is intended to: start to walk, accelerate,
It overtakes other vehicles, brake, slide or normally drives a vehicle；
2) determine driver in the power demand under different driving intentions and the corresponding relationship between pedal opening and speed, knot
Close the efficiency chart of motor, engine, the power of reasonable distribution power of motor and engine, it is ensured that capacity usage ratio highest；
The desired acceleration a of driver is obtained according to current vehicle speed V and accelerator open degree, it is defeated to obtain the current desired vehicle of driver
Power P outreq, it is current it is expected that power both provide energy by battery, energy can also be provided by engine power generation, it is false
If the power obtained from battery is Pbat, the energy obtained from engine power generation is Peng, to meet the power demand of driver,
Following condition should be met:
Preq=Pbat+Peng；
When exporting current power, the efficiency of battery is ηbat, engine efficiency ηeng, then the efficiency of current vehicle energy are as follows:
When driver selects economic model, it is necessary to the case where meeting current vehicle efficiency highest, it is assumed that present energy distribution
Shared i kind scheme needs to meet then to the realization vehicle energetic optimum when speed is V, and acceleration is a:
It can be obtained by optimal energy allocation plan under different speed and acceleration according to the above method, by experimental result
It is organized into map figure, the foundation distributed as energy under different operating conditions.
2. new-energy automobile energy optimizing method according to claim 1, which is characterized in that further include: in driver couple
When the high pressure auxiliary of vehicle has demand, the factors such as current electric quantity, whole vehicle state are comprehensively considered, the power of high pressure auxiliary is divided
Match.
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| CN201410786761.4A CN105752084B (en) | 2014-12-17 | 2014-12-17 | A kind of new-energy automobile energy optimizing method |
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| CN201410786761.4A CN105752084B (en) | 2014-12-17 | 2014-12-17 | A kind of new-energy automobile energy optimizing method |
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| CN105752084B true CN105752084B (en) | 2019-02-05 |
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| CN108116243B (en) * | 2016-11-28 | 2021-06-08 | 上海汽车集团股份有限公司 | Method and device for adjusting electric quantity balance point of hybrid electric vehicle and vehicle |
| CN111661060B (en) * | 2019-03-05 | 2022-06-21 | 阿里巴巴集团控股有限公司 | Method and device for establishing vehicle longitudinal motion model and computer system |
| JP7215380B2 (en) * | 2019-09-19 | 2023-01-31 | トヨタ自動車株式会社 | Vehicle transmission control device |
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| JP2007176270A (en) * | 2005-12-27 | 2007-07-12 | Denso Corp | Dynamo-electric machine controller for hybrid vehicle |
| CN101898557A (en) * | 2010-07-27 | 2010-12-01 | 广州汽车集团股份有限公司 | Control method of electric four-wheel drive hybrid vehicle |
| CN102582616A (en) * | 2012-02-22 | 2012-07-18 | 清华大学 | CVT (continuously variable transmission) hybrid electric vehicle power source torque optimizing distribution method |
| CN103192737A (en) * | 2013-03-25 | 2013-07-10 | 吉林大学 | Drive control method for all-electric car |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US8190319B2 (en) * | 2010-06-08 | 2012-05-29 | Ford Global Technologies, Llc | Adaptive real-time driver advisory control for a hybrid electric vehicle to achieve fuel economy improvement |
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Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2007176270A (en) * | 2005-12-27 | 2007-07-12 | Denso Corp | Dynamo-electric machine controller for hybrid vehicle |
| CN101898557A (en) * | 2010-07-27 | 2010-12-01 | 广州汽车集团股份有限公司 | Control method of electric four-wheel drive hybrid vehicle |
| CN102582616A (en) * | 2012-02-22 | 2012-07-18 | 清华大学 | CVT (continuously variable transmission) hybrid electric vehicle power source torque optimizing distribution method |
| CN103192737A (en) * | 2013-03-25 | 2013-07-10 | 吉林大学 | Drive control method for all-electric car |
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