Q

How to work EV car?

The working principle of electric vehicles is primarily based on the electric drive system, with core components comprising the power battery, electric motor, and electronic control system. The power battery (typically a lithium-ion battery) stores electrical energy. The electronic control system converts direct current into alternating current to power the motor, which then delivers torque directly to the wheels for vehicle propulsion. Battery Electric Vehicles (BEVs) operate solely on battery power, producing zero emissions and achieving energy conversion efficiency exceeding 90%. Regenerative braking technology converts kinetic energy from braking back into electrical energy. Hybrid models (HEVs/PHEVs) integrate a combustion engine with an electric motor, with plug-in variants supporting external charging - their pure electric mode being ideal for short-distance commutes. Range-Extended Electric Vehicles (REEVs) utilize a fuel-powered generator to extend driving range. Fuel Cell Electric Vehicles (FCEVs) generate electricity through hydrogen-oxygen chemical reactions, emitting only water vapor, though they require dedicated hydrogen refueling infrastructure. Critical systems include the Battery Management System (BMS) for real-time cell monitoring, the Vehicle Control Unit (VCU) for power distribution coordination, and charging modules supporting AC slow charging (8-10 hours) or DC fast charging (reaching 80% capacity in 30 minutes). Compared to conventional vehicles, EVs feature simplified drivetrain architecture and reduced maintenance costs, though considerations must be made for charging infrastructure availability and battery lifespan (generally 8 years or 160,000 km). Selection criteria should encompass daily range requirements, charging accessibility, and climatic factors (e.g., opting for battery preheating-equipped models in colder regions).
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