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China has been the development of new energy vehicles as the most important, is the main direction of the development of new energy vehicles. The electric power source of the electric vehicle is a battery, and the power battery is a mobile energy source which is composed of an anode, a cathode and an electrolyte. When charging, the ion flows out from the positive electrode, flows through the electrolyte to the negative electrode, and the anode and the negative electrode react with the opposite electrode when working or discharging.

Electric cars with power battery for lithium-ion batteries, positive plate for the lithium iron phosphate coating on the aluminum foil, but to the best lithium iron phosphate. The negative is coated with graphite or copper foil of lithium titanate, etc. Between the cathode foil diaphragm, winding together. Good winding is negative (including diaphragm) into the battery shell, together into the electrolyte, and then vacuum encapsulation, single battery production is completed.

Lithium battery cathode material procurement costs accounted for 30%, accounting for 20% of the cathode material, diaphragm material accounted for about 20%, electrolyte accounted for about 20%, shell accounted for 10%. Diaphragm for polyacrylic acid. The cathode material has a great influence on the performance of the battery, which is the most critical part of the battery. The development of new energy automotive industry is not only related to national energy security, people's livelihood and environmental protection, but also the development of China's automobile industry.

Cathode aluminum foil electric vehicle lithium battery, and its quality requirements of automotive light as far as possible, but the aluminum is the material of choice for current auto parts lightweight, aluminum plays a vital role in the electric vehicle and hybrid vehicle development. According to the forecast, 2030 China electric vehicle ownership will account for the total quantity more than 30%, China new energy (20.82, -0.37, -1.75%) automobile industry to develop a new application field for the application of aluminum potential, considerable amount.There is no special requirement on the performance of battery aluminum foil, and the aluminum foil industry in China can fully meet all the requirements of this kind of foil.