Motor controller, range extender, electric automobile and range extender detection method

Abstract

The invention provides a motor controller, a range extender, an electric automobile and a range extender detection method. The motor controller comprises a detection device and a control switch, wherein the detection device comprises a rotation speed detection element and a bus voltage detection element; the rotation speed detection element is used for detecting a rotation speed of a power generator; the bus voltage detection element is used for detecting the voltage of a direct current bus; the control switch comprises an ignition power supply control switch and an oil injection power supply control switch; the ignition power supply control switch is used for controlling whether an internal combustion engine is ignited or not according to the rotation speed of the power generator and / or the voltage of the direct current bus; and the oil injection power supply control switch is used for controlling whether the internal combustion engine injects oil or not according to the voltage of the direct current bus. According to the motor controller, the range extender, the electric automobile and the range extender detection method, through mutual effect of the internal combustion engine and the power generator, electric energy is generated so that the motor controller controls the working of the internal combustion engine according to the detected voltage of the direct current bus and the detected rotation speed of the power generator so as to solve a problem that a battery pack and a load are damaged and on fire due to the over-high rotation speed of the power generator and / or the over-high voltage of the direct current bus; and therefore, the runaway phenomenon is avoided, and personal safety is guaranteed.

Description

technical field [0001] The invention relates to the technical field of range extenders, in particular to a motor controller, a range extender, an electric vehicle and a detection method for the range extender. Background technique [0002] In the field of modern automobiles, electric vehicles with energy-saving and environmental protection effects have gradually become the main direction of automobile development, and extended-range electric vehicles are currently one of the mainstream technical directions for the development of electric vehicles. Extended-range electric vehicles can solve the problem of large-scale industrialization of electric vehicles caused by low storage energy of power batteries, short driving range and long charging time, and meet the development needs of electric vehicles. [0003] As an on-board power supply system, the range extender is the main component of the range-extended electric vehicle. The electric vehicle range extender can be composed o...

AI Technical Summary

Problems solved by technology

It can avoid the flying car phenomenon, solve the problem of battery and load damage and fire caused by the DC bus voltage and / or generator speed being too high, protect electrical appliances, and ensure personal safety

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