Coordinate correction system and correction method of roll map in electrode breakage

Abstract

A roll map coordinate correction system simulating an electrode moving in a roll-to-roll state between an unwinder and a rewinder includes a position expressed as a coordinate in a length direction of the simulated electrode, an encoder configured to derive the position of the electrode according to rotation amounts of the unwinder and the rewinder, and a seam detection sensor configured to detect a seam connection member and acquire a coordinate of the seam connection member in conjunction with the encoder. The system includes a reference point detector configured to detect a plurality of reference points marked on the electrode and acquire coordinates of the reference points in conjunction with the encoder, and a roll map coordinate corrector wherein, the roll map coordinate corrector determines a roll map correction direction by comparing encoder values, calculates an electrode breakage length by comparing coordinates and corrects the coordinates of the roll map.