| CPC G01R 31/52 (2020.01) [H01M 4/0402 (2013.01); H01M 4/0435 (2013.01); H01M 4/139 (2013.01)] | 5 Claims |
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1. An electrode loss measuring apparatus comprising:
an electrode which is transferred in a roll-to-roll state between an unwinder and a rewinder and on which a plurality of reference points are marked at predetermined intervals;
a reference point detector configured to detect the reference points marked on the electrode;
a position measurer configured to derive a position value of the electrode according to a rotation amount of the unwinder or the rewinder, and derive a position value of a corresponding reference point in conjunction with the reference point detector when the reference point detector detects the reference point;
a calculator configured to calculate a loss amount of the electrode by comparing the derived position value of the reference point with a position value of a set reference point when an interval between the reference points is changed from an interval between the set reference points due to a loss of a portion of the electrode; and
a seam detection sensor configured to detect a connection tape attached to the electrode,
wherein the position measurer derives a length of the connection tape in conjunction with the seam detection sensor when the seam detection sensor detects the connection tape.
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