Lightweight seat supporting plate of new energy automobile

The invention relates to a light-weight seat supporting plate of a new energy automobile, and belongs to the technical field of automobile accessories. An upper baffle assembly which extends out of the back of the seat and limits movement of the upper arm of the human body is slidably mounted on the side edge of the seat; the centrifugal detection assembly is installed in the middle of the back backup plate and used for detecting whether the automobile is subjected to centrifugal force so that the upper baffle assembly can stretch out in time; the side edge of the supporting bottom plate is slidably provided with a lower baffle which extends out of the seat and limits movement of the crotch of the human body. The linkage assembly is used for driving the lower baffle and the upper baffle assembly to move synchronously; the backrest plate is hinged to the supporting bottom plate, the upper baffle assemblies are installed on the two opposite sides of the backrest plate, and the lower baffles are installed on the