Energy is the cornerstone of the development of social science and technology, but now with the increasing global pollution, energy conservation and environmental protection has become the top priority of social development, at present, China vigorously advocate environmental protection, and introduced some relevant policies, so, more and more environmental protection equipment on the market Including the reduction of gasoline cars, new energy vehicles on the market, the charging treasure and other products are environmentally friendly batteries, which is also lithium battery, to the traditional lead-acid battery, lithium battery has a short charging time, long cycle life, energy saving, environmental protection, free pollution, light weight, long service life and other characteristics.