What is the Definition of a Range-Extended Electric Vehicle?
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Range-extended electric vehicles are purely electric-driven vehicles, including electric cars, electric bicycles, and electric motorcycles, equipped with both ground charging and onboard power supply capabilities. Their powertrain system consists of a power battery system, power drive system, vehicle control system, and auxiliary power unit (APU). The operation control strategy of a range-extended electric vehicle is managed by the vehicle controller. The battery pack can be charged via ground charging stations or onboard chargers, and the engine can be either fuel-based or gas-based. Below is additional information on range-extended electric vehicles: 1. Working Principle of Range-Extended Electric Vehicles: The vehicle's operating mode can function in pure electric mode, range-extended mode, or hybrid mode (HEV) as needed. When operating in range-extended mode, the fuel-saving rate approaches that of a pure electric vehicle as the battery capacity increases, making it a smooth transitional model for pure electric vehicles. Due to their high low-speed torque, smooth high-speed operation, efficient brake energy recovery, and simple, easy-to-maintain structure, they are particularly suitable for urban electric buses and electric bicycle users who travel long distances. They offer strong practicality. 2. Advantages of Range-Extended Electric Vehicles: The advantage of range-extended electric vehicles lies in their power generation unit, which combines an internal combustion engine and a generator. This unit operates in the most fuel-efficient (energy-saving) manner, automatically generating electricity intermittently under system control to power the vehicle's movement, auxiliary equipment, and battery.
