CN101716931A - Method for controlling start-stop of generator set of hybrid electric vehicle - Google Patents

Method for controlling start-stop of generator set of hybrid electric vehicle Download PDF

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Publication number
CN101716931A
CN101716931A CN200910251466A CN200910251466A CN101716931A CN 101716931 A CN101716931 A CN 101716931A CN 200910251466 A CN200910251466 A CN 200910251466A CN 200910251466 A CN200910251466 A CN 200910251466A CN 101716931 A CN101716931 A CN 101716931A
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China
Prior art keywords
generator
power
charge
battery
state
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Pending
Application number
CN200910251466A
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Chinese (zh)
Inventor
张洪雷
李陈勇
冯勇
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Chery Automobile Co Ltd
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Chery Automobile Co Ltd
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Application filed by Chery Automobile Co Ltd filed Critical Chery Automobile Co Ltd
Priority to CN200910251466A priority Critical patent/CN101716931A/en
Publication of CN101716931A publication Critical patent/CN101716931A/en
Pending legal-status Critical Current

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Abstract

The invention discloses a method for controlling the start-stop of a generator set of a hybrid electric vehicle. A power assembly control unit of the vehicle controls the start-stop of the generator set by utilizing the method, so that the oil consumption of an engine is optimal, and the effect of the over-discharge of a battery and high-current discharging on the performance of the battery is prevented. In the technical scheme, the power assembly control unit (PCU) allocates the power of the vehicle for use, and aims at controlling the oil consumption of the engine optimally; and when the battery capacity is low and power demand is high, the power is supplied by utilizing the generator set, so that the effect of the over-discharge of the battery and high-current discharging on the performance of the battery is prevented.

Description

A kind of control method of start-stop of generator set of hybrid electric vehicle
Technical field
The present invention relates to a kind of control method of hybrid vehicle, particularly under the operating mode of city in the series hybrid power electric vehicle, when utilizing generator set that battery is carried out energy supplement, the method that start-stop of generator set is controlled.
Background technology
The development electric vehicle, the electronlmobil that particularly promotes development (EV Electric Vehicles) is global key subjects, is not only the topic that Chinese society pays close attention to, and also is the significant problem that international community extremely pays close attention to.Give priority to positive regard with national governments by domestic and international each big automobile manufacturing enterprise recent years, and the technical development of related industry, for the development of electronlmobil is laid a good foundation.
There is a kind of electric power supply system of automobile to be called now " Plug-in ", the meaning is " as long as socket is just exercisable ", represent very easy to use, the electric power of Plug-in system is stored in the storage battery, the power source of storage battery is very extensive, both can also can produce, more can obtain in the attaching plug from family certainly from hydrogen cell by the put-put that uses ethanol, biodiesel or synthesis fuel.The car owner can be full of as long as place onboard charger on the household electricity power supply every day charged about about 6 hours.After running down of battery, can be the battery charge of Plug-in by electrical generator special-purpose in the automotive engine driving automobile, thereby increase fuel economy and travelled distance number.If from urban distribution network, obtain electric power, and the electric power in the electrical network might be produced by various approach such as natural fuels, coal, nuclear energy, wind energy or waterpower, this means that also Plug-in will be the vehicle that can obtain maximum power resources at present in the world, and this has also represented the diversified development trend in following motor vehicle fuel source.
Under the dual-pressure of energy shock and environmental protection, electronlmobil is the important directions that realizes the auto-industry sustainable development.The characteristics that mixed power electric car (HEV Hybrid Electric Vehicle) is flexible with its form, exploitativeness is strong become one of important directions of electronlmobil research and development in this century.As the kernel control chip of hybrid vehicle (HEV), dynamic assembly control unit (PCU) is the key link of mixed power electric car exploitation, and control policy is the core content of control unit.Computer simulation technique is the necessary means that modern control system is designed and developed, and carries out Study on simulation system the research of HEV control policy is had crucial meaning.
The generator set of hybrid vehicle comprises driving engine and electrical generator, when hybrid vehicle is the oil electric mixed dynamic automobile here, driving engine refers to engine petrol or diesel motor, when hybrid vehicle is other fuel with electricity mixes hybrid vehicle, driving engine refers to other engine fuel.When hybrid electric vehicle was sailed, driving engine drove generator for electricity generation.Direct current output and the mouth of battery, the DC side common bus of motor of generator set, if can generate electricity according to the window policy generator set, the electricity that battery is put is just few, battery just can provide bigger power.This has just improved the working environment of battery.Otherwise charging, the power of drive motor are less than generator set, and unnecessary staying just flows to battery.
Summary of the invention
The objective of the invention is engine consumption to be carried out optimal control by control method to the hybrid electrical vehicle generator set start and stop, promptly be that target adjusting driving engine is worked in a certain operation point with the consumption minimization, this operation point is a whole generating unit efficiency best efficiency point, make engine operation in low relatively oil consumption district, satisfy concrete running car power requirement as the power equalization device by battery.
The technical solution adopted for the present invention to solve the technical problems is: a kind of control method of hybrid electrical vehicle generator set start and stop, the dynamic assembly control unit of automobile utilizes this method control start-stop of generator set, make engine oil consumption optimum, the mistake that prevents battery is put and the influence of heavy-current discharge to battery performance, may further comprise the steps:
The highly charged state of A, definition battery, low state-of-charge and middle state-of-charge value; Define the high-power of demand power and miniwatt value simultaneously;
B, be lower than low state-of-charge or demand power greater than high-power, the generator set start when capacity of cell;
C, be higher than middle state-of-charge when capacity of cell, demand power is when high-power simultaneously, and generator set is shut down;
D, be higher than low state-of-charge and in being lower than during state-of-charge,, keep the mode of operation of generator set constant when capacity of cell if the last period, generator set was in running order constantly.
In the technical scheme of the present invention, dynamic assembly control unit (PCU) distributes use to the power of car load, and carrying out optimal control with engine consumption is purpose, when low and power demand is high in capacity of cell, utilizes driving engine that power is provided, and is beneficial to fuel-economizing.
Below with reference to drawings and Examples, the present invention is carried out comparatively detailed explanation.
Description of drawings
Fig. 1 is the relation of engine operation interval and capacity of cell and power demand.
The specific embodiment
Embodiment 1, as shown in Figure 1,
A kind of control method of start-stop of generator set of hybrid electric vehicle, the dynamic assembly control unit of automobile are utilized this method control start-stop of generator set, make engine oil consumption optimum.
In the present embodiment, define the highly charged state of battery, low state-of-charge and middle state-of-charge value according to the state of battery itself; Define the high-power and demand miniwatt value of demand of P demand power simultaneously, the discharge capability of battery is mainly considered in the high-performance demarcation of demand in the present embodiment, should be less than normal in the maximum discharge power of battery and the discharge efficiency of battery, the rating horsepower of definite main reference generator set of minimum power and optimum oil consumption interval.Among the figure:
1) B zone (SOC electric weight≤low state-of-charge) and E zone (P demand power>demand is high-power) engine operation;
2) a-quadrant (SOC electric weight 〉=middle state of charge and P demand power≤demand are high-power), perhaps P demand power≤demand miniwatt and SOC electric weight 〉=low state-of-charge), start office;
3) C zone and D zone (P demand power>demand miniwatt and low state-of-charge<SOC electric weight<middle state of charge) if the last period, driving engine was in running order constantly, keep engine behavior constant; If now to be in condition be C district in system, can be in any one zone of A, B, C, D, E its last period, if it is the A district for the previous period, Ci Shi C district so, generator set is not just opened.Be in the B district for the previous period as it, C district generator set is just opened so.So the start and stop of C district generator set are by system's residing zone decision for the previous period.
4) if the D zone does not satisfy condition (3), be that the previous moment driving engine is for closing, if the shut of driving engine allows the minimum time interval opened greater than driving engine, this minimum time does not have strict difinition, mainly be to consider that frequent starting can be influential to the oil consumption exhaust, driving engine can be opened.
The control method of the hybrid electrical vehicle generator set start and stop among the present invention is carried out optimal control to engine consumption, promptly be that target adjusting driving engine is worked in a certain operation point with the consumption minimization, this operation point is a whole generating unit efficiency best efficiency point, make engine operation in low relatively oil consumption district, satisfy concrete running car power requirement as the power equalization device by battery.The oil consumption point of driving engine can be seen according to characteristic performance curve.Under bad working environments such as city operating mode brish acceleration and climbing, because the power of generator set is auxiliary, the discharge-rate of electrokinetic cell will reduce, and will reduce the performance requriements of high-power battery.Utilizing the control policy of hybrid electrical vehicle generator set start and stop of the present invention can make the battery of PHEV only have both high-octane demand gets final product.

Claims (2)

1. the control method of a start-stop of generator set of hybrid electric vehicle, it is characterized in that: the dynamic assembly control unit of automobile utilizes this method control start-stop of generator set, make engine oil consumption optimum, prevent that the mistake of battery from putting and the influence of heavy-current discharge to battery performance, may further comprise the steps:
The highly charged state of A, definition battery, low state-of-charge and middle state-of-charge value; Define the high-power of demand power and miniwatt value simultaneously;
B, be lower than low state-of-charge or demand power greater than high-power, the generator set start when capacity of cell;
C, be higher than middle state-of-charge when capacity of cell, demand power is when high-power simultaneously, and generator set is shut down;
D, be higher than low state-of-charge and in being lower than during state-of-charge,, keep the generator set mode of operation constant when capacity of cell if the last period, driving engine was in running order constantly.
2. the control method of a kind of start-stop of generator set of hybrid electric vehicle according to claim 1 is characterized in that: in described state-of-charge represent the peak of battery charge state and minimum and half.
CN200910251466A 2009-12-23 2009-12-23 Method for controlling start-stop of generator set of hybrid electric vehicle Pending CN101716931A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN200910251466A CN101716931A (en) 2009-12-23 2009-12-23 Method for controlling start-stop of generator set of hybrid electric vehicle

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN200910251466A CN101716931A (en) 2009-12-23 2009-12-23 Method for controlling start-stop of generator set of hybrid electric vehicle

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CN101716931A true CN101716931A (en) 2010-06-02

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Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102490719A (en) * 2011-12-05 2012-06-13 郑州宇通客车股份有限公司 System for quickly starting and stopping engine of hybrid vehicle and control method for system
CN104345724A (en) * 2013-08-01 2015-02-11 比亚迪股份有限公司 Method and system for realizing automobile automatic start-stop apparatus
CN104564398A (en) * 2014-12-22 2015-04-29 潍柴动力股份有限公司 Engine control method and device
CN104890663A (en) * 2015-05-29 2015-09-09 潍柴动力股份有限公司 Control method of uniaxial parallel-type hybrid electric vehicle engine
CN106468764A (en) * 2015-08-18 2017-03-01 通用汽车环球科技运作有限责任公司 System and method for monitoring the state-of-charge of battery
CN110040004A (en) * 2019-04-01 2019-07-23 一汽-大众汽车有限公司 A kind of the power follow-up control method and system of range-extended electric automobile
US10998732B2 (en) 2019-03-20 2021-05-04 Caterpillar Inc. System and method for diverse multi-source energy management

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102490719A (en) * 2011-12-05 2012-06-13 郑州宇通客车股份有限公司 System for quickly starting and stopping engine of hybrid vehicle and control method for system
CN104345724A (en) * 2013-08-01 2015-02-11 比亚迪股份有限公司 Method and system for realizing automobile automatic start-stop apparatus
CN104564398A (en) * 2014-12-22 2015-04-29 潍柴动力股份有限公司 Engine control method and device
CN104890663A (en) * 2015-05-29 2015-09-09 潍柴动力股份有限公司 Control method of uniaxial parallel-type hybrid electric vehicle engine
CN104890663B (en) * 2015-05-29 2018-01-16 潍柴动力股份有限公司 The control method of single shaft parallel hybrid electric vehicle engine
CN106468764A (en) * 2015-08-18 2017-03-01 通用汽车环球科技运作有限责任公司 System and method for monitoring the state-of-charge of battery
CN106468764B (en) * 2015-08-18 2019-06-11 通用汽车环球科技运作有限责任公司 System and method for monitoring the state-of-charge of battery
US10998732B2 (en) 2019-03-20 2021-05-04 Caterpillar Inc. System and method for diverse multi-source energy management
CN110040004A (en) * 2019-04-01 2019-07-23 一汽-大众汽车有限公司 A kind of the power follow-up control method and system of range-extended electric automobile

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