Electrically assisted street scooter

A leg propelled, electrically assisted street scooter comprising:

• a handlebar;
• a deck;
• at least one front wheel;
• at least one rear wheel;
• a battery pack;
• at least one electrical motor for driving at least one of said wheels;
• a drive circuit for controlling electrical supply to said electrical motor from said battery pack;
• said drive circuit comprising:
• a speed sensing module for sensing a speed, and a discriminating module for differentiating based on a speed profile between motion caused by leg push from other motions;
• said drive circuit being arranged for distinguishing in each of a plurality of cycles between a first phase of acceleration of the street scooter when the user pushes it with his leg, and a third phase of deceleration of the street scooter due to friction and/or street slope.

A method for controlling a leg propelled and electrically assisted street scooter comprising:

• sensing the speed of said scooter,
• differentiating based on a speed profile between at least one first phase where the user pushes the scooter with his leg and at least one other phase;
• determining the level of electric assistance based on the speed or acceleration of said scooter during one of said phases;
• differentiating between said first phase of acceleration of the street scooter when the user pushes it with his leg, and a third phase of deceleration of the street scooter due to friction and/or street slope.

An electrically assisted street scooter comprising:

• a handlebar;
• a deck;
• at least one front wheel;
• at least one rear wheel;
• a battery pack;
• at least one electrical motor for driving at least one of said wheels;
• a drive circuit for controlling electrical supply to said electrical motor from said battery pack,
• a brake pedal for braking one wheel by friction when the brake pedal is pressed against the wheel;
• at least one sensor arranged for generating a brake signal which can take more than two different values depending on the position of said brake pedal,
• wherein said drive circuit is arranged for controlling a braking torque applied by the electric motor to the wheel in function of said brake signal.