Recently, nobilis, a world-famous aluminum producer, predicted that the demand for aluminum products in Asian automobile industry will increase by 20% - 25% this year due to the continuous increase of China's electric vehicle production. The comprehensive advantages of aluminum in safety, durability, flexibility, environmental protection and other aspects have been recognized by more and more people in the automotive industry and consumers. But at the same time, the disadvantages of aluminum such as high cost, low strength and poor welding performance can not be ignored. How to make good use of aluminum to promote the development of automotive electrification and intelligence is still a difficult problem for many automobile manufacturers.