Hybrid electric vehicle energy management system based on driving intention recognition

Abstract

The invention discloses a hybrid electric vehicle energy management system based on driving intention recognition. A driving intention recognition system judges whether a driving style belongs to a power mode or an economic mode according to a vehicle average acceleration and an acceleration mean variance; judging whether the acceleration state of the driver is general acceleration, gentle acceleration or emergency acceleration according to the accelerator pedal opening degree and the pedal opening degree change rate; judging whether the starting intention or the cruising speed is a low speed, a medium speed or a high speed by combining the vehicle speed with the vehicle acceleration; the working mode selection system determines a main power source according to driving intention judgment made by the driving intention recognition system and in combination with an SOC value; meanwhile, the torque optimization distribution system carries out power distribution; the method is combined with a control strategy proposed for the multimode coupling driving system, a corresponding energy management strategy is formulated, and the fuel consumption of the multimode coupling driving system is reduced.

Description

technical field [0001] The invention relates to an energy management system of a hybrid electric vehicle based on driving intention recognition, and belongs to the technical field of energy management. Background technique [0002] The multi-coupling drive system can enable hybrid electric vehicles to have efficient centralized and distributed coupling drive functions. During the system design process, an appropriate energy management strategy can obtain optimal drive efficiency. Energy management strategies should be considered in the initial stage of hybrid drive system design The main content of the energy management strategy is to control the energy conversion and transmission process of the vehicle power system, so as to achieve the desired system response, which is to balance the workload of each component on the premise of ensuring vehicle performance and component life, thereby reducing energy. losses, improving fuel economy. The current energy management strategy i...

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Problems solved by technology

[0003] In view of this, the object of the present invention is to provide a hybrid electric vehicle energy management system based on driving intention recognition, combine it with the control strategy proposed for the multi-mode coupling drive system, formulate a corresponding energy management strategy, reduce multiple Fuel consumption of mode-coupled drive systems; deficiencies of existing technologies can be overcome

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