METHOD FOR INSPECTING WELD STATES OF BATTERY

The present invention relates to a method for inspecting the weld states of a battery, in which the weld states of a cylindrical battery are inspected, the cylindrical battery comprising: a cylindrical jelly roll in which a first current collector, a first separator, a second current collector, and a second separator are sequentially stacked and wound, so as to extend in the vertical direction; a first collector plate which is coupled to the upper end of the jelly roll, and onto the lower surface of which the first current collector is firstly welded; and a second collector plate which is coupled to the lower end of the jelly roll, and onto the upper surface of which the second current collector is secondly welded. The method for inspecting the weld states of a battery comprises a first measurement step, a second measurement step, a first weld determination step, and a second weld determination step.