Car battery electric vehicle is one of the key components. At present the European electric vehicle battery still lead acid and nickel cadmium is given priority to. In the past ten years the global main factory turn development light, high performance of the next generation battery - nimh batteries (Ni - MH) and lithium ion battery (Li - ion and Li - polymer two), many factories are new electric car production listed. Especially the Japanese factories products and production the most, just the Japanese domestic hybrid car use number more than 50000 vehicles, stability of leading position. Europe is a new battery electric vehicle application products, but slow development, less than America, Japan.