Motor manufacturer Nidec has announced a prototype for an in-wheel EV traction motor. The company aims to begin mass production of the motor around 2023.
The prototype motor fits within the wheel hubs of an EV, a design which Nidec claims allows for higher efficiency and lighter, more compact designs than motors occupying the engine compartment. The prototype consists of a motor with integrated reduction gears and an oil cooling system. The motor weighs 32 kg and can achieve a power output over 100 kW. It fits inside a 20-inch wheel and is compatible with rear-wheel, front-wheel and four-wheel drive systems.