Battery Protection Structure Resistant Against Frontal Collision of Monocoque Vehicle

An embodiment battery protection structure includes a sub frame mounted to a lower portion of a pair of front side members, a stopper provided at a rear portion of the sub frame and aligned with a power electric (PE) mounting part in a longitudinal direction of a vehicle body, the PE mounting part being configured to mount a PE system to the sub frame, and a center side lower member coupled to a center cross member and configured to support a rear portion of the stopper.