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A hybrid electric vehicle adaptive energy management system and method

An energy management system, a technology for hybrid vehicles, applied in hybrid vehicles, motor vehicles, combustion engines, etc., can solve problems such as battery overcharge or overdischarge, achieve efficient management, improve working condition adaptability, and improve fuel economy. sexual effect

Active Publication Date: 2021-10-12
JIANGSU UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The technical problem to be solved by the present invention is to avoid overcharging or over-discharging of the battery under different working conditions by using the equivalent fuel consumption minimum strategy with a fixed equivalent factor, and improve the working condition adaptability of the equivalent fuel consumption minimum strategy, thereby improving Vehicle Fuel Economy of Hybrid Electric Vehicles in a Wide Range of Road Driving Conditions

Method used

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  • A hybrid electric vehicle adaptive energy management system and method
  • A hybrid electric vehicle adaptive energy management system and method
  • A hybrid electric vehicle adaptive energy management system and method

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Embodiment Construction

[0033] The present invention will be further described below in conjunction with the accompanying drawings and specific embodiments.

[0034] figure 1 It is a schematic structural diagram of an adaptive energy management system to be adopted in the embodiment of the present invention. The system includes mode discrimination module, drive control module, brake control module, torque distribution module, average power prediction module and equivalent factor solution module. The mode discrimination module judges that the vehicle is in the driving or braking mode according to the driver's accelerator pedal, brake pedal and vehicle speed signals, and transmits the obtained mode signal to the driving control module, braking control module and torque distribution module.

[0035] When the vehicle is in the driving mode, the drive control module adopts the equivalent fuel consumption minimum strategy to optimize energy management and determine the optimal engine torque and speed. For...

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Abstract

The invention discloses a self-adaptive energy management system and method for a hybrid electric vehicle. The system includes a mode discrimination module, a drive control module, a braking control module and a torque distribution module. The mode discrimination module judges the working mode of the vehicle, and the drive control module and the brake control module adopt corresponding control strategies to solve the ideal output torque of different power sources. To distribute the output torque of different power sources, the drive control module adopts the minimum equivalent fuel consumption control strategy. Aiming at the disadvantage of poor adaptability of the fixed equivalent factor in the minimum equivalent fuel consumption control strategy, the equivalent factor solution module is used to perform fuzzy automatic calculation of the equivalent factor based on the average demand power of the road section predicted by the average power prediction module and the current state of charge of the battery. The solution is adapted to significantly improve the overall vehicle fuel economy of HEVs over a wide range of on-road driving conditions.

Description

technical field [0001] The invention relates to an energy management optimization method of a hybrid electric vehicle, which belongs to the field of optimal control of the hybrid electric vehicle. Background technique [0002] China has become the world's largest single vehicle market, and the problems of air pollution and energy shortage caused by traditional fuel vehicles will become more and more serious. my country's "Technology Roadmap for Energy Saving and New Energy Vehicles" clearly puts hybrid technology as the top energy-saving technology for vehicles It is worth vigorously developing. The energy management strategy is the key to improve the fuel economy of HEVs. Effective energy management strategies must be combined to enable HEVs to take full advantage of their energy-saving and emission-reducing advantages. At present, both rule-based and optimization algorithm-based energy management strategies have been extensively studied. Among them, the rule-based strateg...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B60W10/06B60W10/08B60W10/18B60W20/13B60W20/15B60W40/105
CPCB60W10/06B60W10/08B60W10/18B60W40/105B60W2510/0604B60W2510/18B60W2520/10B60W2710/0666B60W2710/083B60W2710/18B60W20/13B60W20/15Y02T10/40Y02T10/62
Inventor 施德华刘盛容香伟汪少华蔡英凤陈龙
Owner JIANGSU UNIV