Electric drive for two- or multi-wheel bicycles with a pedal drive and a directly coupled electrical machine in slip-ring design and method

摘要

Electric drive (1) for two- or multi-wheel bicycles with a pedal drive (4) and a directly coupled electrical machine (3) in slip-ring design, a first rotor (2) of the electrical machine (3) being coupled to the pedal drive (4) and is driven by this with a power applied to the pedal drive (4) and a second rotor (5) of the electric machine (3) is connected to a wheel (7) to be driven, the electric machine (3) for the pedal drive (4) applied power continuously adds electrical power and wherein a reduction gear (6) is provided between the second rotor (5) of the electrical machine (3) and the wheel (7) to be driven, and the electrical machine (3) also enables energy recovery during braking.