Electric vehicle controller is used to control the electric motor starting, running, stick, speed, stops, and other electronic devices of electric control devices, which are like the electric brain, is an important part of electric cars. Electric cars so far, including electric bicycles, electric motorcycles, electric tricycle, electric motorcycles, electric four wheelers, battery, electric vehicle controllers and also because different models have different properties and characteristics. Electric vehicle controller should take into account the actual usage of the batteries and motor design should take full account of relationship between battery, controller, motor, use them as an integrated system to design, resulting in more ideal electric vehicle controller.