Energy management control method and system for hybrid electric vehicle

Abstract

The invention discloses an energy management control method for a hybrid electric vehicle. The energy management control method comprises the steps that S100, a vehicle control unit sends access signals to a fuel cell and storage battery energy source controller, an energy storage system controller and a driving system controller and obtains signal data; and S200, the vehicle control unit enablesa system to switch a corresponding driving mode according to the signal data, wherein the step S300 is executed when the system is switched to the driving mode with the optimal economical efficiency,the step S400 is executed when the system is switched to the maximum electric driving mode, and the step S500 is executed when the system is switched to the driving charging driving mode. The workingmode of the hybrid power system can be adjusted according to the working conditions in the steps S300, S400 and S500, so that the optimal system economy in the whole driving working condition range isrealized. Correspondingly, the invention further discloses an energy management control system for the hybrid electric vehicle. The energy management control system comprises a whole vehicle controller, a fuel cell energy source controller, a storage battery energy source controller, an energy storage system controller and a driving system controller, and the system can be used for executing themethod.

Description

technical field [0001] The present invention relates to an energy management control method and system, in particular to an energy management control method and system for vehicles. Background technique [0002] In recent years, with the increasingly serious problem of environmental pollution, human beings have begun to pay attention to the development and use of clean energy. Among many clean energy sources, hydrogen energy is characterized by high efficiency and cleanliness, and fuel cells are the main way to utilize hydrogen energy. [0003] Fuel cell is a high-efficiency power generation system. Through the electrochemical reaction of hydrogen energy, the chemical energy of hydrogen is directly converted into electrical energy. The reaction product is only water, without any greenhouse gas emissions. It achieves true zero emissions and is environmentally friendly. It will not cause any pollution and damage, has effective energy saving and emission reduction functions, a...

AI Technical Summary

Problems solved by technology

For example: frequent charging and discharging of the battery system will affect its service life; another example: the power output of the fuel cell range extender needs to undergo secondary energy conversion, and the efficiency is reduced; another example: the output power of the fuel cell range extender is usually set It is near the optimal efficiency point of the fuel cell system, and its working range is fixed. The efficiency optimization space of the hybrid power system is small, and it is difficult to obtain the maximum improvement. With the current fuel cell stack technology, the power at the optimal efficiency point is far lower than the maximum capacity of the system. , the output capacity of the hybrid power system is limited; another example: the opening and closing of the fuel cell range extender depends on the battery power, the working mode of the fuel cell participating in the hybrid power system is fixed, and the deep mutual cooperation between key components cannot be realized. Good adaptability to different driving conditions

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