Electrified vehicles include
- HEV: Hybrid electric vehicles obtain all net propultion energy from gasoline but use an electrical system to improve fuel economy.
- PHEV: Plug-in hybrid electric vehicles store energy from the electricity grid and can drive partly using electricity and partly using gasoline. There are two primary types:
- Blended-strategy PHEVs use a mix of gasoline and electricity when the battery is charged and then switch to gasoline only when the battery is discharged. Because the electrical system does not need to satisfy maximum power demands on its own, it can be smaller.
- Extended Range Electric Vehicles (EREVs) are PHEVs that use only electricity when the battery is charged and switch to gasoline when the battery is discharged. For trips shorter than the range of the battery, the vehicle operates as a BEV.
- BEV: Battery electric vehicles have larger battery packs to store more energy from the electricity grid for longer range and have no backup gasoline engine.