Range extending system and electric automobile

Abstract

The embodiment of the invention discloses a range extending system and an electric automobile, which relate to the technical field of charging and are invented to adjust the charging voltage of a storage battery by adjusting an excitation magnetic field. The range extending system, which is applied to the electric automobile, comprises an engine, a hybrid excitation generator, a rectifier and an excitation controller, wherein the output end of the engine is connected with a rotor of the hybrid excitation generator, an armature winding of the hybrid excitation generator is connected with the input end of the rectifier, the output end of the rectifier is used for being connected with a storage battery of the electric automobile, and the excitation controller is connected with an excitation winding of the hybrid excitation generator. The range extending system is suitable for charging the storage battery of the electric automobile.

Description

technical field [0001] The invention relates to the technical field of charging, in particular to a range-extending system and an electric vehicle. Background technique [0002] There are various drawbacks in the fuel engine vehicles currently commonly used, such as low energy utilization rate and serious pollution. With the enhancement of people's awareness of environmental protection, electric vehicles are becoming more and more popular. Electric vehicles are powered by vehicle-mounted power supplies and drive wheels with electric motors, which can reduce environmental pollution. However, electric vehicles are limited by the storage capacity of batteries and have the disadvantage of short cruising range. In order to overcome this disadvantage, extended-range electric vehicles have emerged. For automobiles, the range-extending system charges the batteries of electric vehicles. The existing range-extending system includes an engine, a permanent magnet synchronous generator, ...

AI Technical Summary

Problems solved by technology

[0002] There are various disadvantages in the currently widely used fuel engine vehicles, such as low energy utilization rate and serious pollution. With the enhancement of people's awareness of environmental protection, electric vehicles are becoming more and more popular

Electric vehicles are powered by vehicle-mounted power supplies and drive wheels with electric motors, which can reduce environmental pollution. However, electric vehicles are limited by the storage capacity of batteries and have the disadvantage of short cruising range. In order to overcome this disadvantage, extended-range electric vehicles have emerged. For automobiles, the range-extending system charges the batteries of electric vehicles. The existing range-extending system includes an engine, a permanent magnet synchronous generator, a motor controller, etc. The permanent magnet synchronous generator converts mechanical energy into electrical energy. The magnetic field of the generator is generated by permanent magnets, which makes the magnetic field of the permanent magnet synchronous generator unadjustable during the operation of the range-extending system. Therefore, the charging voltage of the battery cannot be adjusted by adjusting the excitation magnetic field.

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