Drive system and remote control

A drive system for a light electric vehicle, the drive system comprising:

• a power unit for driving the light electric vehicle;
• a main gearing connected to the power unit for controlling a transmission ratio of the power unit;
• and
• a remote control connected to the power unit for operating the power unit, the remote control comprising an actuator arranged to operate the power unit, and
• the power unit comprising an assist motor arranged to provide torque output to a torsion shaft of the light electric vehicle, and a control motor arranged to adjust transmission ratio of the main gearing,
• wherein the remote control comprises:
• an operating switch arranged to switch the remote control between a first operating state and a second operating state, in the first operating state the actuator is connected to the assist motor and arranged to adjust the torque output of the assist motor, and in the second operating state the actuator is connected to the control motor and arranged to adjust the transmission ratio of the main gearing,
• wherein the main gearing comprises an epicyclic gear set comprising a sun gear, a ring gear, plurality of planet gears between the sun gear and the ring gear and a planet carrier connected to the planet gears and arranged to receive rotation of the torsion shaft, and that:
• the control motor is connected to the ring gear of the epicyclic gear set, the torsion shaft is connected to the sun gear of the epicyclic gear set, and the assist motor is connected to the sun gear of the epicyclic gear set;
• or the control motor is connected to the sun gear of the epicyclic gear set, the torsion shaft is connected to the planet carrier of the epicyclic gear set, and the assist motor is connected to the ring gear of the epicyclic gear set.