Range extender for battery electric vehicle

A range extender for a battery electric vehicle, the range extender configured to supply power to a battery for driving the battery electric vehicle, and the range extender comprising:

• an engine dedicated for power generation;
• a generator configured to generate power by driving of the engine dedicated for power generation;
• a fuel tank of the engine dedicated for power generation;
• and a cooling system of the engine dedicated for power generation, wherein
• the engine dedicated for power generation is a horizontally opposed engine, and comprises:
• a crankshaft having a rotation center axis that is horizontal;
• an even number of cylinders in total that are arranged on both sides of the crankshaft in equal number such that the cylinders are opposed to each other with the crankshaft interposed therebetween;
• and pistons provided within the respective cylinders such that the pistons are opposed to each other with the crankshaft interposed therebetween,
• the generator is disposed at an approximately center portion in a length direction of the engine dedicated for power generation such that the engine dedicated for power generation and the generator are T-shaped in planar view, and
• the generator has a rotating shaft that is disposed horizontally, and is disposed coaxially with the crankshaft or disposed on an axis parallel to the crankshaft, and the rotating shaft is connected to the crankshaft.