Welding Inspection Device

Abstract: The present invention relates to a welding inspection device and a welding inspection method for a tabless cylindrical battery cell including a jelly roll type electrode assembly, wherein a current-collecting plate welded to an uncoated part of an electrode assembly is welded to a fixed electrode terminal from the inner side of a hollow part of an electrode assembly so that the current-collecting plate extends again through a closed surface provided at one end of a cylindrical battery can in which the electrode assembly is accommodated, and then the welding inspection device can inspect the welding state. The battery can is fixed by a jig, and the welding inspection device is a vision camera inspection device provided with an endoscope part or a telephoto lens, and can inspect whether there is a defect due to weak welding, over-welding, or welding spatter, by photographing the welded region and the inner surface of the hollow part in a state of being inserted or not inserted through an opening part provided through the other side end of the battery can. In addition, the present invention can be applied to a sample on a linear track.

Patent Information

Applicants

Inventors

Specification

Documents

Application Documents