Lead acid batteries will be replaced by lithium batteries

  The draft regulates the production technology of four-wheel low-speed electric vehicles, and makes clear requirements on the size, speed, vehicle servicing quality, safety requirements, power requirements and other aspects of low-speed electric vehicles.

  The draft limits the size of low-speed electric vehicles to: length no more than 3500mm, width no more than 1500mm and height no more than 1700mm; In terms of speed, the draft will adjust the maximum speed of low-speed electric vehicles from less than 50km / h to less than 70km / h and more than 40km / h; In terms of collision indicators, the draft adds gb20071 standard on the basis of the technical conditions of micro electric vehicles (2016 Edition), with a large adjustment range.

  In terms of power batteries, the draft stipulates that the safety of power batteries shall comply with GB / t31485 and GB / t31467 3 and battery management system; The electrical performance shall meet the requirements of GB / t31486; The cycle life shall meet the requirements of GB / t31484; The specific energy density of the system shall not be less than 70wh / kg. In terms of the curb weight of the whole vehicle, it is required that the curb weight of the whole vehicle shall not exceed 750KG, and the mass of the power battery system shall not exceed 30% of the curb weight of the whole vehicle.