Control system and control method of fuel cell range extender

Abstract

The invention provides a control system and a control method of a fuel cell range extender and belongs to the technical field of new energy electric vehicles. A power cell is taken as driving energy, a fuel cell is taken as auxiliary range extending energy, in efficiency and the power ranges of the power cell, times of start of the fuel cell range extender are reduced to the greatest extent, damage to the range extender due to frequent start and the effect caused by frequent charge and discharge of the power cell on the service life are reduced, after the energy of the power cell is utilized greatly, the fuel cell is started, the output power of the fuel cell is controlled according to the required power, and the driving range is extended. According to the control system and the control method, the operating efficiency of the fuel cell and the power cell is optimized, the problems of the short driving range of the power cell and the high cost of the fuel cell are solved, meanwhile, service lives of the power cell and the fuel cell are prolonged, and the power property and the economic efficiency are unified efficiently.

Description

technical field [0001] The invention belongs to the technical field of new energy electric vehicles, and relates to a method for controlling the start and stop of a fuel cell range extender and coordinatingly controlling and distributing the energy of a fuel cell and a power battery, in particular to a fuel cell range extender Device control system and control method. Background technique [0002] With the advancement of science and technology, the increasing scarcity of oil resources and the improvement of public awareness of environmental protection, electric vehicles have attracted more and more attention. In recent years, electric vehicles have achieved significant development, but the energy density of batteries is not high, and battery life is short, resulting in short mileage, which is a major bottleneck in the current market promotion. [0003] In order to solve the problem of short cruising range of electric vehicles, various extended-range electric vehicles have e...

AI Technical Summary

Problems solved by technology

For vehicles with fuel cells as the main driving energy, since the operation of the vehicle is not in a steady state, frequent starting, acceleration and climbing make the dynamic working conditions of the vehicle very complicated, and the output of the fuel cell changes with the vehicle working conditions, while The durability and service life of the fuel cell are not good under such dynamic conditions, and the dynamic response of the fuel cell is relatively slow. The output characteristics of the fuel cell cannot meet the driving requirements of the vehicle when starting, accelerating or climbing a steep slope.

At the same time, for vehicles that use fuel cells as the main driving energy, the cost of fuel cells is bound to be high

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