CN102649429B - Auxiliary motive power control method and device of micro hybrid electric vehicles - Google Patents
Auxiliary motive power control method and device of micro hybrid electric vehicles Download PDFInfo
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- CN102649429B CN102649429B CN201210130041.3A CN201210130041A CN102649429B CN 102649429 B CN102649429 B CN 102649429B CN 201210130041 A CN201210130041 A CN 201210130041A CN 102649429 B CN102649429 B CN 102649429B
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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
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Abstract
The invention provides an auxiliary motive power control method and an auxiliary motive power control device of micro hybrid electric vehicles and belongs to the technical field of automobiles. The control method and the control device solve the problem of low whole work efficiency of the existing hybrid power system. The auxiliary motive power control method comprises the following steps that: a, the demand torque required by the running of an automobile and the system on chip (SOC) size of a storage battery are detected; b, the sum of the maximum output torque when an engine works at an efficient region and the maximum output torque when a motor works at the efficient region is compared with the demand torque; c, the auxiliary motive power control device controls the engine to output the maximum output torque when the engine works at the efficient region, and the motor outputs the rest of demand torque; d, the auxiliary motive power control device controls one of the two motive power facilities: the engine and the motor to output the maximum torque, and the other motive power facility outputs the rest of demand torque; and e, the auxiliary motive power control device controls the motor to stop work, and the engine outputs according to the demand torque. The auxiliary motive power control method and the control device have the advantages that the whole work efficiency of the hybrid power system is high, the fuel economy is high, and the like.
Description
Technical field
The invention belongs to automobile technical field, relate to a kind of hybrid system control method, particularly relate to a kind of auxiliary power control method and control setup of weak mixed vehicle.
Background technology
Warming gradually of the energy shortage caused due to global resources scarcity of resources and global environment, how to alleviate resource nervous and reduce environmental pollution ever more important, hybrid vehicle arises at the historic moment as new-energy automobile.Hybrid power system can be in the operating modes such as acceleration, climbing at automobile and driving engine is in for driving engine provides extra power-assisted to help driving engine to reach steady state condition as early as possible in transient process, the consumption of reduction discharge and fuel oil.Its assisted Extraction supplies the general type of power-assisted to be that the actual output torque of Real-time Collection car load demand torque and driving engine, insufficient section carries out dynamic compensation by ISG motor when automobile acceleration or other high load working conditions.But the moment of torsion how effectively distributing driving engine and ISG motor when hybrid power system is in assistive drive state becomes the subject matter that this system faces.
For this reason, people, through long-term exploration, propose various solution, and some has also applied for patent.Such as, Chinese patent discloses a kind of drived control method and apparatus [publication number: CN101565042A of hybrid electric vehicle; Application number: 200910138646.5], the method comprises: (1) entire car controller is asked driving, engine system, integrated starting motor system, transmission system, battery system, driving system, and abs braking antiblock device detects; (2) according to the testing result of (1), control-driven system is selected at motor assist drive pattern, electric power generation pattern, motor braking mode or electrical efficiency assistive drive MODE of operation.Driving control device of the present invention, by entire car controller respectively with driving engine, integrated starting motor, change speed gear box and abs braking antiblock device connect and compose, and achieve the real-time detection of entire car controller to each actuating device working condition.
The drived control method and apparatus of this hybrid electric vehicle can make engine operation in efficient region and Optimum Economic region when motor assist drive pattern especially electrical efficiency assistive drive pattern, and now engine fuel efficiency is higher.But it cannot ensure also to make ISG machine operation in efficient region and most effective region while efficient region in engine operation, and cause overall efficiency can not remain within the scope of higher work efficiency.
Summary of the invention
The object of the invention is the problems referred to above existed for prior art, propose a kind of fuel oil consumption low and the auxiliary power control method of the weak mixed vehicle that car load work efficiency is high and control setup.
Object of the present invention realizes by following technical proposal:
An auxiliary power control method for weak mixed vehicle, utilize an auxiliary propulsion-unit control device for use to control the output torque of driving engine and motor, it is characterized in that, this control method comprises the steps:
A, detect the size of the demand torque of running car and the SOC of storage battery, if demand torque is less than setting value or SOC when being less than setting value, enter step e; If demand torque be greater than setting value and SOC is greater than setting value time, enter step b;
B, max. output torque sum when maximum output torque and machine operation are at efficient region when efficient region by engine operation and demand torque contrast, if driving engine and motor, when the torque maximum sum that efficient region exports is greater than demand torque, enter step c; If driving engine and motor, when the torque maximum sum that efficient region exports is less than demand torque, enter steps d;
C, auxiliary propulsion-unit control device for use control driving engine and export torque peak when it is operated in efficient region, and motor exports remaining demand torque;
Now, driving engine and motor all work in efficient region.
D, auxiliary propulsion-unit control device for use control a maximum output torque in driving engine and these two power plants of motor, and another power plant exports remaining demand torque;
E, auxiliary propulsion-unit control device for use control motor and quit work, and driving engine is pressed demand torque and exported.
In the auxiliary power control method of above-mentioned a kind of weak mixed vehicle, in described step a, first judge the size of demand torque, if this demand torque is less than setting value, then enter step e; If demand torque is greater than setting value, then the size of the SOC carrying out storage battery judges.
In the auxiliary power control method of above-mentioned a kind of weak mixed vehicle, if the SOC of storage battery is less than setting value, then enter step e; If this SOC is greater than setting value, then enter step b.
In the auxiliary power control method of above-mentioned a kind of weak mixed vehicle, in described steps d, auxiliary propulsion-unit control device for use controls driving engine and exports by the torque peak of its work, and motor exports remaining demand torque.
In the auxiliary power control method of above-mentioned a kind of weak mixed vehicle, in described steps d, auxiliary propulsion-unit control device for use controls motor and exports by the peak torque of its work, and driving engine exports remaining demand torque.
An auxiliary propulsion-unit control device for use for weak mixed vehicle, is characterized in that, described control setup comprises
Detection module, for detecting the SOC value of demand torque in running car and storage battery;
Module is set, for arranging the setting value of demand torque and storage battery SOC;
Comparison module, for comparing the demand moment of torsion and its setting value, the size of the torque maximum sum that the SOC value of storage battery and its setting value and driving engine and motor export at efficient region and demand torque, and export comparative result;
When ISG be in auxiliary power pattern is provided time, the running car demand torque detected compares with the demand torque value of setting by comparison module, if the demand torque needed for running car is less than setting value, comparison module directly sends comparison signal to control module.If demand torque is greater than setting value, the SOC value of current storage battery compares with the SOC value of setting by comparison module, and exports corresponding comparison signal.When comparative result is greater than 0, the torque maximum sum that comparison module comparison engine and motor export at efficient region and demand torque value, regardless of result, comparison module all will send corresponding comparison signal to control module place.
Control module, for receiving the comparative result of above-mentioned comparison module and exporting corresponding control signal;
Driver module, for receiving above-mentioned control signal and according to this control signal output drive signal to drive driving engine and machine operation.When driver module receives the control signal that demand torque is less than when setting value or SOC value are less than setting value, output drive signal is controlled driving engine and exports by demand torque rating by driver module, and motor does not work.When driver module Received signal strength is that demand torque is greater than setting value, storage battery SOC value is greater than setting value and driving engine and the motor driver module when the torque maximum sum that efficient region exports is greater than demand torque drives engine operation at efficient region, unmet demand moment of torsion is provided by motor, now, both are all operated in efficient region.And when driving engine and the motor driver module when the torque maximum sum that efficient region exports is less than demand torque drives driving engine by total external characteristics work, namely torque peak output pressed by driving engine, unmet demand moment of torsion is provided by motor or drive motor exports by the peak torque of its work, and driving engine exports remaining demand torque.
Compared with prior art, the auxiliary power control method of this weak mixed vehicle and control setup hybrid power system be in auxiliary power mode of operation engine operation is also ensured while efficient region motor is operated in efficient region, thus by the stabilised efficiency of whole system within a comparatively high scope, improve the fuel economy of car load and the tractive performance of vehicle.
Accompanying drawing explanation
Fig. 1 is this auxiliary power control method of weak mixed vehicle and the workflow diagram of control setup.
Detailed description of the invention
Be below specific embodiments of the invention and by reference to the accompanying drawings, technical scheme of the present invention is further described, but the present invention be not limited to these embodiments.
Embodiment one
The auxiliary propulsion-unit control device for use realizing this auxiliary power control method comprises detection module, arranges module, comparison module, control module and driver module, detection module, module, comparison module and driver module are set all are connected with control module, in the present embodiment, each component part in device is set to each functional module.
The auxiliary power control method of this weak mixed vehicle is specially: when automobile runs into acceleration or other high load working conditions in the process of moving, motor in hybrid power system provides auxiliary power for automotive engine, detection module detects the SOC value of demand torque needed for running car and storage battery in real time, and by comparison module by testing result compared with the setting value arranged set by module.Storage battery SOC value is the state-of-charge of storage battery, i.e. battery dump energy.
When demand torque is less than setting value, control module receives the signal that sends of comparison module and controls driver module and makes driving engine export the moment of torsion identical with demand torque, while control module send a signal to driver module motor quit work.When detecting that demand torque is greater than setting value, now detection module can be detected the SOC value of the storage battery obtained and setting value is made comparisons by comparison module.
When detecting that the SOC value of storage battery is less than setting value, control module receive comparison module send signal and send control signal to driver module drive driving engine export as required, simultaneously stop motor run.And when detecting that the SOC value of storage battery is greater than setting value, the size of the torque maximum sum that comparison module exports at efficient region driving engine and motor and demand torque compares, if the former is greater than the latter, then control module receives this comparison signal and sends control signal to driver module, driver module receives and sends drive singal and controls driving engine and export its torque peak at efficient region, remaining demand torque is provided by motor, now driving engine and motor are all operated in respective efficient region, so make the fuel economy of car load better, the whole work efficiency of hybrid power system is higher.
And driving engine and motor are when the torque maximum sum that efficient region exports is less than demand torque value, now driving engine or motor cannot be operated in respective efficient region simultaneously, consider the moment of torsion that motor can provide and the electricity that storage battery can provide limited, therefore driver module sends drive singal and makes driving engine not be operated in its efficient region, it is made to export by maximum torque, surplus torque is provided by motor, can ensure the tractive performance of vehicle in this situation.
Embodiment two
The present embodiment is identical with the step of embodiment one, the control setup realizing control method is also identical, different place is that the comparison signal that the comparison module received when control module sends is that demand torque is greater than setting value, storage battery SOC value be greater than setting value and driving engine and motor when the torque maximum sum that efficient region exports is less than demand torque, owing to considering that ISG motor can provide peak torque, the power plant therefore setting maximum output torque is motor.So when control signal receives above-mentioned signal and sends a control signal to driver module, driver module sends drive singal control motor and is not operated in efficient region, and namely export its peak torque, surplus torque is then provided by driving engine.
Specific embodiment described herein is only to the explanation for example of the present invention's spirit.Those skilled in the art can make various amendment or supplement or adopt similar mode to substitute to described specific embodiment, but can't depart from spirit of the present invention or surmount the scope that appended claims defines.
Claims (4)
1. an auxiliary power control method for weak mixed vehicle, utilize an auxiliary propulsion-unit control device for use to control the output torque of driving engine and motor, this control method comprises the steps:
A, detect the size of the demand torque of running car and the SOC of storage battery, if demand torque is less than setting value or SOC when being less than setting value, enter step e; If demand torque be greater than setting value and SOC is greater than setting value time, enter step b; Wherein, first judge the size of demand torque, if this demand torque is less than setting value, then enter step e; If demand torque is greater than setting value, then the size of the SOC carrying out storage battery judges;
B, max. output torque sum when maximum output torque and machine operation are at efficient region when efficient region by engine operation and demand torque contrast, if driving engine and motor, when the torque maximum sum that efficient region exports is greater than demand torque, enter step c; If driving engine and motor, when the torque maximum sum that efficient region exports is less than demand torque, enter steps d;
C, auxiliary propulsion-unit control device for use control driving engine and export torque peak when it is operated in efficient region, and motor exports remaining demand torque;
D, auxiliary propulsion-unit control device for use control a maximum output torque in driving engine and these two power plants of motor, and another power plant exports remaining demand torque;
E, auxiliary propulsion-unit control device for use control motor and quit work, and driving engine is pressed demand torque and exported.
2. the auxiliary power control method of weak mixed vehicle according to claim 1, is characterized in that, in described step a, if when demand torque is greater than setting value, and the SOC of described storage battery is less than setting value, then enter step e; If when demand torque is greater than setting value, and this SOC is greater than setting value, then enter step b.
3. the auxiliary power control method of weak mixed vehicle according to claim 1 and 2, is characterized in that, in described steps d, auxiliary propulsion-unit control device for use controls driving engine and exports by the torque peak of its work, and motor exports remaining demand torque.
4. the auxiliary power control method of weak mixed vehicle according to claim 1 and 2, is characterized in that, in described steps d, auxiliary propulsion-unit control device for use controls motor and exports by the peak torque of its work, and driving engine exports remaining demand torque.
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| CN105620481B (en) * | 2014-10-27 | 2018-06-19 | 北京宝沃汽车有限公司 | The control method and system of vehicle |
| CN104842764B (en) * | 2014-12-01 | 2017-10-10 | 北汽福田汽车股份有限公司 | Hybrid vehicle and its power drive system, control method |
| CN104879229B (en) * | 2015-06-02 | 2017-07-04 | 安徽江淮汽车集团股份有限公司 | A kind of Motronic control maps idle speed control and control system |
| CN106274883A (en) * | 2016-08-29 | 2017-01-04 | 北京新能源汽车股份有限公司 | Control method and device of hybrid electric vehicle and vehicle |
| US10099682B1 (en) * | 2017-03-27 | 2018-10-16 | Ford Global Technologies, Llc | Controlling motor torque to reserve battery energy in a hybrid vehicle |
| CN110040002B (en) * | 2019-03-26 | 2024-07-05 | 阿尔特汽车技术股份有限公司 | Optimal control method for power-assisted torque peak value of motor of hybrid electric vehicle |
| CN110588631B (en) * | 2019-09-20 | 2021-03-26 | 安徽合力股份有限公司 | Control method of hybrid power system |
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Effective date of registration: 20190314 Address after: 317000 east gate of Taizhou City, Zhejiang Province Co-patentee after: Zhejiang Geely Holding Group Co., Ltd. Patentee after: Zhejiang Geely Automobile Research Institute Co., Ltd. Address before: 311228 No. 206 Farmer's Second House in Linjiang Industrial Park, Xiaoshan District, Hangzhou City, Zhejiang Province Co-patentee before: Zhejiang Geely Automobile Research Institute Co., Ltd. Patentee before: Hangzhou Branch, Zhejiang Geely Automobile Research Institute Co., Ltd. Co-patentee before: Zhejiang Geely Holding Group Co., Ltd. |