Patent ID: 9676282
Date: 2017-06-13
CPC Classifications: B60K,B60L,H02K,Y02T,Y10S

Claim:
1. A range-extending, charging, and driving apparatus for an electric vehicle, the apparatus comprising: a planetary gear assembly, including at least one planetary gear, a planet carrier unit, a ring gear, and a sun gear unit; and a wheel motor, connected to the corresponding planetary gear assembly, for driving the planetary gear assembly and a wheel set, connected to the planetary gear assembly, of a plurality of wheels of the electric vehicle, the wheel motor further connected to a main battery, for charging the main battery when the wheel motor generates electric power reversely; wherein when the wheel motor is connected to and drives the planetary gear assembly, the wheel motor does work on the planetary gear assembly, and the planetary gear assembly drives the wheel set to turn; wherein when the wheel motor is connected to but does not drive the planetary gear assembly, the wheel set, which idles, reversely drives the planetary gear assembly, and the planetary gear assembly then reversely drives the wheel motor to reversely generate electric power so as to charge the main battery; and wherein the planet carrier unit comprises a planet carrier and a planet carrier shaft, the sun gear unit comprises a sun gear and a sun gear shaft; when the wheel motor is connected to and drives the planet carrier shaft, the planet carrier is then connected to and drives the sun gear, the sun gear shaft is then connected to and drives the wheel set, the planet carrier is as an input, the sun gear is as an output, and the ring gear is held, providing a large speed increase in same direction at the wheel set to enhance speed of the electric vehicle, wherein the wheel set has at least one front wheel of the electric vehicle.