Energy management control method and system for hybrid electric vehicles

Abstract

The invention discloses an energy management control method for a hybrid electric vehicle, comprising steps: S100: the vehicle controller sends an access signal to a fuel cell and battery energy source controller, an energy storage system controller, and a drive system controller, and Get signal data. S200: The vehicle controller makes the system switch to the corresponding driving mode according to the signal data: when switching to the most economical driving mode, execute step S300; when switching to the maximum electric driving mode, execute step S400; when switching to the driving charging driving mode, execute step S500 . S300, S400 and S500 can adjust the working mode of the hybrid system according to the working conditions, so as to achieve the optimal system economy in the whole range of driving conditions. Correspondingly, the present invention also discloses an energy management control system for a hybrid electric vehicle, which includes a vehicle controller, a fuel cell energy source controller, a battery energy source controller, an energy storage system controller and a drive system control device, the system can be used to implement the above-mentioned method of the present invention.

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 a vehicle. 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 has the characteristics of high efficiency and cleanliness, and fuel cells are the main way to utilize hydrogen energy. [0003] A fuel cell is an efficient 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 will not cause any pollution and damage, has an effective energy saving and emission reduction effect, and is a new source of power for road traffic. [0004] In t...

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

Images