Start and stop control method for extended range type electric motor car engine

Abstract

The invention relates to a start and stop control method for an extended range type electric motor car engine. The start and stop control method is characterized in that a power cell and a supercapacitor dual voltage platform are mounted on a new energy source extended range type electric motor coach, wherein a supercapacitor is used for storing braking energy, and the power cell and an APU (Auxiliary Power Unit) system of the engine provide driving energy; starting signals and wakeup signals of the engine are accessed into an electric wiring, and are sent to an ECU (Electronic Control Unit) by a VMS (Velocity-Measuring System); a supercapacitor management system CAN (Controller Area Network) bus and the VMS are in a same path, and a supercapacitor voltage value is acquired by the VMS in real time in a process of vehicle driving so as to judge recycled braking energy and monitor the braking energy stored in the vehicle-mounted supercapacitor in real time; and when voltage in the vehicle-mounted supercapacitor is larger than the voltage value in a normal shutdown state, the engine is in an idle shutdown state, and at the same time, the energy required for the vehicle driving is obtained from the braking energy stored in the supercapacitor, and a vehicle is driven by means of the energy of the vehicular supercapacitor.

Description

technical field [0001] The invention relates to a start-stop control method of an electric vehicle engine, in particular to a start-stop control method of an extended-range electric vehicle engine. Background technique [0002] Facing the two major problems of environmental pollution and lack of oil resources, green and environmentally friendly energy-saving new energy buses have attracted more and more attention from various countries. Environmental protection and energy saving are an important development direction of automobile technology in the 21st century. At the same time, the emission regulations of various countries are becoming increasingly strict, and the extended-range electric vehicle is a new generation of clean energy vehicles with the characteristics of low pollution and low fuel consumption. [0003] The extended-range electric vehicle is a pure electric drive electric vehicle equipped with ground charging and vehicle power supply functions. Its power syste...

AI Technical Summary

Problems solved by technology

[0007] The technical problem to be solved by the present invention is: the extended-range vehicle in the prior art cannot make full use of the energy of braking during driving; and the frequent use of the APU to start requires frequent charging and discharging of the battery, which greatly reduces the life of the battery , which increases the operating cost of the vehicle; at the same time, it also reduces the mileage of the electric vehicle. In the vehicle with the same maximum fuel reserve, the final mileage is relatively reduced

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