The advantages are:
1, you can charge the battery through the engine, there is no need to build large charging equipment. The biggest difference between extended range electric vehicles and pure electric vehicles is that they are equipped with a range extender, which uses a modified small-displacement engine to provide energy when the battery life is insufficient.
Now the domestic charging infrastructure is not perfect, extended-range electric vehicles can just make up for such deficiencies, can be described as the biggest advantage.
the drawback is
The battery is charged by the engine and then powered by the battery, which is easy to cause energy loss in the process. Specific analysis:
1, power waste. Since the engine and generator do not directly drive the wheels, this part of the power is wasted, and the weight brought by the engine and generator is not reduced.
2, under the condition of high-speed road, the fuel consumption is high. This is because in high-speed road conditions, the extended-range plug-in hybrid has an additional conversion process, and the conversion itself consumes energy, resulting in higher fuel consumption.