What is a Range-Extended Electric Vehicle (REEV)? What are its advantages and disadvantages compared to a Battery Electric Vehicle (BEV)?
A Range-Extended Electric Vehicle (REEV) is a type of hybrid electric vehicle that builds on the base of a Battery Electric Vehicle (BEV) by adding a gasoline or gas engine (range extender). The range extender charges the battery, thus extending the driving range. In these vehicles, the electric motor is the primary driving force, and the range extender can be either fuel or gas-based. The vehicle's operational control strategy is completed by the vehicle controller. The vehicle can be charged via ground charging piles or onboard chargers.
Famous REEV models are BYD Yangwang U8, BMW i3 REx, Chevrolet Volt, Cadillac ELR etc..
1. Extended Driving Range: The REEV can extend its driving range by charging the battery through the range extender, providing longer driving distances.
2. Greater Flexibility: The range extender offers additional driving energy, making the REEV more flexible for long-distance travel needs.
3. Convenience of Refueling: The REEV can be refueled like a traditional gasoline car, reducing the waiting time for charging.
Disadvantages of REEV compared to BEV:
1. Higher Cost: REEVs are more expensive than BEVs because they require an additional range extender system.
2. Complex Maintenance: The system structure of REEVs is more complex, and maintenance and repair costs may be higher.
3. Environmental Impact: REEVs still require fuel usage, causing some degree of pollution and failing to achieve the zero-emission goal of BEVs.
When choosing between a REEV or a BEV, consumers need to weigh the above advantages and disadvantages and make a decision based on their needs and preferences.