CN102897041B - A kind of four-wheel-drive hybrid power system regenerative braking torque distribution method - Google Patents
A kind of four-wheel-drive hybrid power system regenerative braking torque distribution method Download PDFInfo
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- CN102897041B CN102897041B CN201210372091.2A CN201210372091A CN102897041B CN 102897041 B CN102897041 B CN 102897041B CN 201210372091 A CN201210372091 A CN 201210372091A CN 102897041 B CN102897041 B CN 102897041B
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Abstract
The present invention relates to a kind of four-wheel-drive hybrid power system regenerative braking torque distribution method, belong to new-energy automobile field, described entire car controller gathers the information of Full Vehicle System parts, the regenerative braking moment of setting ISG motor and rear-guard motor, improves the energy utilization efficiency of system under the prerequisite ensureing security of system.Beneficial effect of the present invention: the present invention is a kind of control method of Brake energy recovery, under the prerequisite ensureing Vehicular system brake safe, the recovery of larger execution braking energy, improves the energy recovery rate of system; Simultaneously the present invention unifies without the need to the hydraulic braking sysgtem changing prototype engine the work of ABS system, provides a kind of method for recovering brake energy based on prototype engine brake system and ABS system, ensure that the car brakeing safety performance of hybrid power system.
Description
Technical field
The present invention relates to new-energy automobile field, particularly relate to a kind of four-wheel-drive hybrid power system regenerative braking torque distribution method.
Background technology
Under the background that pure electric automobile battery technology does not get a qualitative improvement, be limited by battery cost and performance, forthcoming years, pure electric automobile is difficult to Quantity production.Hybrid power is as a kind of transition scheme, and its system is changed little, and be more suitable for scale of mass production, four-drive hybrid electric fuel saving ratio is higher, is subject to the favor of domestic and international automobile manufacturing company at present.
At Chinese application number be 201110022220.0 patent in the middle of, disclose a kind of method of motor vehicle driven by mixed power Brake energy recovery.Wherein relate to by the lock torque needed for entire car controller calculating car load, and distribute the lock torque of antero posterior axis and the lock torque of point gas-distributing motor and hydraulic braking, ensure the abbreviation of high-tension battery SOC(state of charge, refer to state-of-charge) perform the method for Brake energy recovery when can not overflow as far as possible efficiently.But, in the middle of disclosed content, do not mention when high-tension battery breaks down, electric system when breaking down or the ABS system malfunctions of car load time, brake energy recovering system is the brake safe how ensureing vehicle.
Summary of the invention
The object of this invention is to provide a kind of four-wheel-drive hybrid power system regenerative braking torque distribution method, to overcome currently available technology above shortcomings.
The object of the invention is to be achieved through the following technical solutions:
A kind of four-wheel-drive hybrid power system regenerative braking torque distribution method, comprises the following steps:
(1) entire car controller by car load CAN network receive ISG(start power generation all-in-one machine) motor, rear-guard motor, high tension battery and ABS(anti-lock brake system) and etc. every data parameters, then store; And receive speed information, entire vehicle gear information, acceleration pedal amplitude information and brake pedal information etc. by data acquisition;
(2) entire car controller detects high voltage electric storage cell system whether et out of order, and when high tension battery system jam, whole-control system forbidding regenerating braking energy reclaims function; Otherwise, carry out step (3);
(3) judge whether to meet regenerative brake condition and system is normal, if meet, then whole-control system calculates and sets the Brake energy recovery moment of torsion of ISG motor and rear-guard motor; Otherwise, if do not meet regenerative brake condition and system mal, then carry out step (4);
(4), when when ISG motor et out of order, rear-guard motor does not have a fault, whole-control system controls to implement Brake energy recovery by rear-guard motor; Otherwise when when rear-guard motor et out of order, ISG motor does not have a fault, whole-control system controls to implement Brake energy recovery by ISG motor; And
(5) when ISG motor and the equal et out of order of rear-guard motor, whole-control system controls forbidding regenerative braking capability.
Further, in described step (3), entire car controller determines whether to meet regenerative brake condition according to information such as acceleration pedal amplitude, brake pedal amplitude, gear information, the speed of a motor vehicle and high tension battery SOC.Preferably, described when acceleration pedal amplitude change lower than 10%, brake pedal amplitude change higher than 10%, vehicle at advance gear, the speed of a motor vehicle higher than 10km/h, high tension battery SOC lower than 70% time, then judge vehicle meet regenerative brake condition.
Preferably, the regenerative braking torque of described setting meets the limit value of the regenerative braking moment of the front axle required by ABS system, and when ABS system jam, the regenerative braking moment of setting ISG motor is zero.
Abbreviation: SOC: battery charge state; ISG: start power generation all-in-one machine; ABS: anti-lock brake system; BMS: battery management system; MCU: electric machine controller.
Beneficial effect of the present invention is: the present invention is a kind of control method of Brake energy recovery, and under the prerequisite ensureing Vehicular system brake safe, the recovery of larger execution braking energy, improves the energy recovery rate of system; Simultaneously the present invention unifies without the need to the hydraulic braking sysgtem changing prototype engine the work of ABS system, provide a kind of method for recovering brake energy based on prototype engine brake system and ABS system, ensure that the car brakeing safety performance of hybrid power system to a certain extent.
Accompanying drawing explanation
With reference to the accompanying drawings the present invention is described in further detail below.
Fig. 1 is the control logic schematic diagram of a kind of four-wheel-drive hybrid power system regenerative braking torque distribution method described in the embodiment of the present invention.
Detailed description of the invention
As shown in Figure 1, a kind of four-wheel-drive hybrid power system regenerative braking torque distribution method described in the embodiment of the present invention, comprise the following steps: entire car controller receives every data parameters of ISG motor, rear-guard motor, high tension battery and ABS system etc. by car load CAN network, then stores; And receive speed information, entire vehicle gear information, acceleration pedal amplitude information and brake pedal information etc. by data acquisition.Entire car controller, according to the relevant information obtained, controls the work of braking energy recovering function, specific as follows:
When battery management system reports and submits high tension battery to there is fault, entire car controller closes braking energy recovering function; Otherwise when state of the system is normal, the reasonable distribution Brake energy recovery moment between rear-guard motor and ISG motor according to brake pedal and ABS feedback signal, ensure vehicle recuperated energy and non-slip to greatest extent, namely whole-control system is according to the moment of brake pedal amplitude, speed of a motor vehicle state and high tension battery state-of-charge determination regenerative brake, ISG motor and rear-guard motor regenerative braking moment are subject to the restriction of the limit value of the antero posterior axis regenerative braking moment of ABS system requirements simultaneously, and when ABS system jam, the regenerative braking moment of setting motor is zero; Otherwise when when rear-guard electric system is normal, ISG motor breaks down, whole-control system is according to brake pedal amplitude, speed of a motor vehicle state and high tension battery state-of-charge determination regenerative braking moment and distribute to rear-guard motor and carry out Brake energy recovery, rear-guard motor will be subject to the restriction of the limit value of the rear axle regenerative braking moment of ABS system requirements simultaneously, and when ABS system jam, the regenerative braking moment of setting rear-guard motor is zero; Otherwise when when rear-guard electric system breaks down, ISG electric system is normal, entire car controller system is according to brake pedal amplitude, speed of a motor vehicle state and high tension battery state-of-charge determination regenerative braking moment and distribute to ISG motor and carry out Brake energy recovery, ISG motor will be subject to the restriction of the limit value of the front axle regenerative braking moment of ABS system requirements simultaneously, and when ABS system jam, the regenerative braking moment of setting ISG motor is zero; Otherwise when two electric systems all break down, close braking energy recovering function, ensure vehicle safety.
When high tension battery system malfunctions, forbidding regenerating braking energy reclaims function; When chaufeur is comparatively to relax brake mode manipulation automobile, and road adherence is enough high, high-tension battery SOC electricity is lower, entire car controller sends instruction to rear-guard motor and carries out Brake energy recovery, if during the limit value of the rear axle regenerative braking moment of ABS system requirements, entire car controller reclaims moment according to the braking of the system requirements setting rear-guard motor of ABS, both differences is set as the regenerative braking moment of ISG motor simultaneously.
When the SOC of high tension battery is too high, regenerating braking energy is stopped to reclaim function.Typically, when SOC higher than 70% time, stop regenerating braking energy reclaim function; When chaufeur runs into emergency situation emergency brake, then rear-guard motor and ISG motor Brake energy recovery simultaneously, in the hope of allowing car brakeing as early as possible; When the speed of a motor vehicle is higher, when rear-guard motor is thrown off, braking recuperated energy has all been come by ISG motor.
When ISG motor breaks down, but in the normal situation of rear-guard motor, Brake energy recovery has been come by rear-guard motor, regenerative braking moment meets the restriction of ABS system for the limit value of front axle brake moment simultaneously, when ABS system malfunctions, regenerative braking moment is set as zero by whole-control system; When rear-guard motor breaks down, but in the normal situation of ISG motor, Brake energy recovery has been come by ISG motor, regenerative braking moment has met the limit value of ABS system for rear axle lock torque simultaneously, when ABS system malfunctions, regenerative braking moment is set as zero by whole-control system; When two motors all break down, then close braking energy recovering function.
The present invention is not limited to above-mentioned preferred forms; anyone can draw other various forms of products under enlightenment of the present invention; no matter but any change is done in its shape or structure; every have identical with the application or akin technical scheme, all drops within protection scope of the present invention.
Claims (4)
1. a four-wheel-drive hybrid power system regenerative braking torque distribution method, is characterized in that, comprises the following steps:
(1) entire car controller receives the data parameters of ISG motor, rear-guard motor, high tension battery and ABS system by car load CAN network, then stores; And receive speed information, entire vehicle gear information, acceleration pedal amplitude information and brake pedal information by data acquisition;
(2) entire car controller detects high voltage electric storage cell system whether et out of order, and when high tension battery system jam, whole-control system forbidding regenerating braking energy reclaims function; Otherwise, carry out step (3);
(3) judge whether to meet regenerative brake condition and system is normal, if meet, then whole-control system calculates and sets the Brake energy recovery moment of torsion of ISG motor and rear-guard motor; Otherwise, if do not meet regenerative brake condition and system mal, then carry out step (4);
(4), when when ISG motor et out of order, rear-guard motor does not have a fault, whole-control system controls to implement Brake energy recovery by rear-guard motor; Otherwise when when rear-guard motor et out of order, ISG motor does not have a fault, whole-control system controls to implement Brake energy recovery by ISG motor; And
(5) when ISG motor and the equal et out of order of rear-guard motor, whole-control system controls forbidding regenerative braking capability.
2. four-wheel-drive hybrid power system regenerative braking torque distribution method according to claim 1, it is characterized in that: in described step (3), entire car controller determines whether to meet regenerative brake condition according to acceleration pedal amplitude, brake pedal amplitude, gear information, the speed of a motor vehicle and high tension battery SOC information.
3. four-wheel-drive hybrid power system regenerative braking torque distribution method according to claim 2, it is characterized in that: when the change of acceleration pedal amplitude lower than 10%, the change of brake pedal amplitude higher than 10%, vehicle advance gear, the speed of a motor vehicle higher than 10km/h, high tension battery SOC lower than 70% time, then judge that vehicle meets regenerative brake condition.
4. four-wheel-drive hybrid power system regenerative braking torque distribution method according to claim 3, it is characterized in that: the regenerative braking torque of setting meets the limit value of the regenerative braking moment of the front axle required by ABS system, when ABS system jam, the regenerative braking moment of setting ISG motor is zero.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201210372091.2A CN102897041B (en) | 2012-09-29 | 2012-09-29 | A kind of four-wheel-drive hybrid power system regenerative braking torque distribution method |
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| CN201210372091.2A CN102897041B (en) | 2012-09-29 | 2012-09-29 | A kind of four-wheel-drive hybrid power system regenerative braking torque distribution method |
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| CN102897041B true CN102897041B (en) | 2015-10-28 |
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Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
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| MX368339B (en) | 2013-10-10 | 2019-09-30 | Nissan Motor | Control device for four-wheel drive electric vehicle. |
| CN105730247B (en) * | 2014-12-12 | 2018-10-09 | 北京宝沃汽车有限公司 | Braking energy feeding control method and system |
| CN106627166B (en) * | 2016-10-31 | 2019-05-28 | 中山大学 | A kind of generation method of Two axle drive pure electric automobile control strategy for regenerative braking |
| CN108216245A (en) * | 2018-01-15 | 2018-06-29 | 华晨鑫源重庆汽车有限公司 | Vehicle energy feedback method and device |
| CN113968205A (en) * | 2021-12-01 | 2022-01-25 | 吉林大学 | Composite braking fault-tolerant control method based on multi-axis electrically driven vehicle and vehicle |
| CN115891681A (en) * | 2023-01-06 | 2023-04-04 | 中国第一汽车股份有限公司 | Control method for coordinating mode switching and brake recovery and related device |
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| CN1631693A (en) * | 2005-01-19 | 2005-06-29 | 清华大学 | Series connection type brake system of hybrid power vehicle |
| CN101011931A (en) * | 2007-01-30 | 2007-08-08 | 重庆大学 | Drive system and drive method of ISG type whole wheel driven hybrid power automobile |
| CN101898558A (en) * | 2010-08-10 | 2010-12-01 | 奇瑞汽车股份有限公司 | Method for controlling drive modes of four-wheel drive strong hybrid automobile |
| CN102114783A (en) * | 2011-01-20 | 2011-07-06 | 浙江吉利汽车研究院有限公司 | Method for recovering brake energy of hybrid electric vehicle |
| CN102582447A (en) * | 2012-02-13 | 2012-07-18 | 北京长城华冠汽车技术开发有限公司 | Method capable of adjusting recovery proportion of braking force of electric vehicle |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| EP2144795B1 (en) * | 2007-04-05 | 2014-06-11 | Continental Teves AG & Co. oHG | Method for operating a vehicle brake system and vehicle brake system |
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Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1631693A (en) * | 2005-01-19 | 2005-06-29 | 清华大学 | Series connection type brake system of hybrid power vehicle |
| CN101011931A (en) * | 2007-01-30 | 2007-08-08 | 重庆大学 | Drive system and drive method of ISG type whole wheel driven hybrid power automobile |
| CN101898558A (en) * | 2010-08-10 | 2010-12-01 | 奇瑞汽车股份有限公司 | Method for controlling drive modes of four-wheel drive strong hybrid automobile |
| CN102114783A (en) * | 2011-01-20 | 2011-07-06 | 浙江吉利汽车研究院有限公司 | Method for recovering brake energy of hybrid electric vehicle |
| CN102582447A (en) * | 2012-02-13 | 2012-07-18 | 北京长城华冠汽车技术开发有限公司 | Method capable of adjusting recovery proportion of braking force of electric vehicle |
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