Extended-range electric vehicle generator structure

Abstract

The invention discloses a generator structure of an extended-range electric vehicle. The generator structure comprises a rotor iron core and a stator iron core. The rotor iron core is adhered to a rotor iron core support in a sealed manner. The central position of the rotor iron core support is connected with an engine shaft through a bolt. The engine shaft is inserted into the center of the shell. The inner side wall of the shell is connected with the stator iron core through a bolt. According to the invention, the shell is directly mounted on the end cover of an engine; a rotor iron core assembly composed of the rotor iron core and the rotor iron core support is directly connected with the engine shaft; an original engine mass flywheel and a gear ring assembly are cancelled; a generatorrotor is used for replacing the mass flywheel and the gear ring assembly; the requirement of the engine for inertia of the flywheel is met; the requirement of the engine for vibration, rotating speedfluctuation and the like is met; the whole rotor assembly is supported through the rear end cover and a bearing; the rotor does not generate eccentricity generated by structural deformation; and the eccentricity and control precision of the rotary transformer rotor and stator are guaranteed.

Description

technical field [0001] The invention relates to the technical field of generators, in particular to a generator structure for an extended-range electric vehicle. Background technique [0002] New energy electric vehicles are divided into pure electric vehicles and hybrid vehicles. To achieve a certain mileage, a pure electric vehicle needs to be equipped with a battery with a large capacity. Especially when a pure electric vehicle is running at high speed, due to the greatly increased wind resistance and tire rolling resistance , The cruising range of an electric vehicle at high speed will be far less than the cruising range of the working condition test. Moreover, the current charging facilities are not perfect, the charging time is long, and the driver's mileage anxiety is a very big problem. As a type of new energy electric vehicle, the range-extended electric vehicle effectively solves the problem of short mileage of pure electric vehicles through the range extender sys...

AI Technical Summary

Problems solved by technology

Disadvantages and deficiencies: The way of connecting through the coupling mainly has relatively large vibration and noise when the engine starts and stops, the coupling shock absorber wears seriously during long-term operation, and the unbalanced operation of the shock absorber and coupling affects the engine. It has a great impact on the life of the generator; the axial length of the range extender system is relatively long, and the system weight is heavy, which affects the driving efficiency of the vehicle and affects the mileage; ②, through the inner spline of the generator shaft (outer spline key) is directly connected with the external spline (internal spline) of the engine shaft

Disadvantages and deficiencies: the direct connection between the inner spline of the generator and the outer spline of the engine requires high machining accuracy of the inner and outer splines, and the processing and manufacturing are difficult. When the engine and the generator are often started and stopped, the inner and outer splines The wear of the tooth surface is large, the service life is not long, and the noise is large

Disadvantages and deficiencies: the axial length of the range extender system increases, and the overall volume increases;

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