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PHEV four-drive torque distribution method based on ECMS

A distribution method and drive-to-rotation technology, which is applied to the layout of multiple different prime movers of the general power plant, climate sustainability, mechanical equipment, etc., can solve the problem of the driver's driving experience, the decrease in passenger comfort, and the failure to comprehensively consider vehicle driving To solve the problems of high fuel economy, reasonable torque distribution, and reduced equivalent fuel consumption

Active Publication Date: 2019-10-08
BEIJING INSTITUTE OF TECHNOLOGYGY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0002] The ECMS algorithm has been widely used in academic research, but the actual vehicle controller generally still adopts a rule-based energy management strategy. The calculation amount of the traditional ECMS algorithm is still too large for the vehicle controller, which needs to be further simplified; In addition, the irregular shifting strategy obtained according to the ECMS algorithm will cause frequent shifting, and the driving experience of the driver and the comfort of the passengers will be reduced. The traditional ECMS only considers the optimization of fuel consumption and fails to comprehensively consider the driving performance of the vehicle, so it is difficult to directly apply it to the actual situation. control

Method used

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  • PHEV four-drive torque distribution method based on ECMS
  • PHEV four-drive torque distribution method based on ECMS
  • PHEV four-drive torque distribution method based on ECMS

Examples

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Embodiment

[0078] Use Simulink to build an ECMS control strategy model, including a signal input module, an ECMS control module and an output module; the ECMS control module includes a working torque calculation module, a drive and braking judgment module, a CD module, an ECMS algorithm module and a braking energy recovery module ;

[0079] The ECMS optimal torque allocation calculation module calculates the output or input torque range of the engine, BSG motor and rear axle motor according to the current vehicle operating point and other parameters, that is, the feasible range of each power source at this time; for all the torques in the feasible range The power distribution scheme calculates the instantaneous total equivalent fuel consumption according to the equivalent fuel consumption factor and the efficiency characteristic data of the engine and the motor, selects the power source power output combination with the minimum equivalent fuel consumption as the best control amount, and d...

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Abstract

The invention discloses a PHEV four-drive torque distribution method based on an ECMS. The method specifically comprises the following steps of step 1, calculating equivalent fuel consumption factorsaccording to the residual electric quantity of a power battery; step 2, calculating instantaneous total equivalent fuel consumption rate; step 3, converting all working torque combinations of an engine, a BSG motor and a rear axle motor into the working torque of a driving wheel, and determining the working torque range of each power source according to the working torque range of the driving wheel; step 4, solving the minimum value of the instantaneous total equivalent fuel consumption rate within the actual working torque range of each power source; and step 5, taking the working torque of each power source corresponding to the minimum instantaneous total equivalent fuel consumption rate as the PHEV optimal working torque for distribution. According to the method, the calculation processof the torque distribution is simplified, the torques of all power sources of a hybrid electric vehicle are reasonably distributed, so that the charge state of the power battery of the vehicle is kept balanced, the equivalent oil consumption is reduced, and the driving performance and riding comfort of the vehicle are improved.

Description

technical field [0001] The invention belongs to the technical field of new energy vehicles, in particular to an ECMS-based PHEV four-wheel drive torque distribution method. Background technique [0002] The ECMS algorithm has been widely used in academic research, but the actual vehicle controller generally still adopts a rule-based energy management strategy. The calculation amount of the traditional ECMS algorithm is still too large for the vehicle controller, which needs to be further simplified; In addition, the irregular shifting strategy obtained according to the ECMS algorithm will cause frequent shifting, and the driving experience of the driver and the comfort of the passengers will be reduced. The traditional ECMS only considers the optimization of fuel consumption and fails to comprehensively consider the driving performance of the vehicle, so it is difficult to directly apply it to the actual situation. control. Contents of the invention [0003] The purpose o...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B60W20/10B60W10/06B60W10/08
CPCB60W20/10B60W10/06B60W10/08B60W2510/1005B60W2510/244B60W2520/10B60W2710/0666B60W2710/083Y02T10/40Y02T10/62Y02T90/14B60W20/11B60K6/442B60K6/48B60K6/547B60K6/52B60W2050/0039B60W20/13B60W2050/0041B60W2400/00B60W2720/40
Inventor 刘辉刘洋韩立金辛慧斌
Owner BEIJING INSTITUTE OF TECHNOLOGYGY
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