The energy supply schemes for low penetration of electric vehicles at this stage in China are presented, and based on this the optimum planning model of energy supply facilities based on the life cycle cost theory is established. With the combination of charging pattern and battery swap pattern, different types of vehicles take use of different ways that adapt to their driving characteristics. The planning principle of energy supply facilities including center station, swap station and fast charging station is proposed, and corresponding optimum planning model is set up based on LCC. This model is solved by combining Voronoi diagram with electromagnetism-like mechanism. A numerical example verifies that this method can get optimal planning program which integrates multiple objectives like economy, reliability and continuity.