A method for identifying a foil position in a power storage device (10) includes: analyzing (S1) the power storage device (10) by X-ray CT analysis to obtain an X-ray absorbed amount (AB(r, θ, z)) at each position; acquiring (S2) an on-path X-ray absorbed...

This application provides a gap inspection apparatus and a gap inspection method. The gap inspection apparatus is configured for a wound battery cell, where in a height direction of the wound battery cell, the wound battery cell includes a wound body porti...