An energy management method and system based on a steady-state engine strategy

Abstract

The invention provides an energy management method and system based on a steady-state engine strategy, and belongs to the technical field of hybrid vehicle energy management strategies. It solves the problem of how to optimize energy management under various actual working conditions and dynamic changing requirements. Steps of the method: obtain the current driving condition of the vehicle, and obtain the dynamic SOC balance strategy, adaptive start-stop strategy, torque distribution strategy and economic shift line strategy corresponding to the current driving condition according to the current driving condition; The adaptive start-stop strategy, torque distribution strategy and economical shift line strategy under the current working conditions are combined with the dynamic SOC balance strategy to perform engine start-stop, torque distribution and shift control. The system includes a vehicle controller, a gearbox controller, a battery management system, a motor controller and an engine controller to realize dynamic SOC balance strategy, adaptive start-stop strategy, torque distribution strategy and economical shift line strategy. Fully cooperate and optimize energy management to improve economical fuel performance.

Description

technical field [0001] The invention belongs to the technical field of hybrid vehicle energy management strategies, and relates to an energy management method and system based on a steady-state engine strategy. Background technique [0002] The power system of a hybrid electric vehicle is composed of multiple power sources, and the energy management strategy can realize the reasonable distribution of required power among multiple power sources and the coordinated control among the components of the power system, so as to achieve the goal of maintaining good power performance. Under the premise, to achieve vehicle fuel economy and clean environmental protection. A particular consideration in the energy management of a vehicle is the powertrain, whose subcomponents include the engine, electric motor, battery, clutch and gearbox. And SOC is used to indicate the state of charge of the power battery. And the hybrid vehicle judges the driving conditions of the vehicle according ...

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Problems solved by technology

The system and method solve the problem of how to optimize energy management under various actual working conditions and dynamic changing requirements

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