Apparatus and method for measuring electrode loss using reference point, and roll map of electrode process with reference point displayed and method and system for generating the same

An electrode loss measuring method comprising:

• marking a plurality of reference points between a starting end portion and a finishing end portion of an electrode moving in a roll-to-roll state between an unwinder and a rewinder at predetermined intervals;
• deriving a position value of the reference point by detecting the reference point on the electrode by a reference point detector;
• calculating 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 between the starting and finishing end portions of the electrode is changed from an interval between the set reference points due to a loss of a portion of the electrode;
• and
• detecting a connection tape on the electrode and calculating a length of the connection tape before or after the deriving of the position value of the reference point.

A method of generating a roll map of an electrode process, the method comprising:

• acquiring data on an electrode loss and data on reference points marked on the electrode by inspecting an electrode moving in a roll-to-roll state between an unwinder and a rewinder;
• transmitting the acquired data to a data processing system together with data on a position of the electrode, at which the corresponding data is acquired;
• and
• displaying a roll map bar in the form of a bar simulating the electrode in a roll-to-roll state on a screen in synchronization with the movement of the electrode between the unwinder and the rewinder, and visually displaying the data on the electrode loss and the data on the reference point at a predetermined position of the roll map bar corresponding to the data on the position of the electrode, by the data processing system.

A system for generating a roll map of an electrode process, the system comprising:

• a measuring device configured to inspect an electrode moving in a roll-to-roll state between an unwinder and a rewinder, acquire data on an electrode loss and data on a reference point marked on the electrode, and transmit the pieces of data to a data processing system together with data on a position of the electrode, at which the corresponding data is acquired;
• the data processing system configured to generate a roll map by displaying a roll map bar in the form of a bar simulating the electrode in a roll-to-roll state in synchronization with the movement of the electrode between the unwinder and the rewinder, and visually displaying the transmitted data on the electrode loss and the data on the reference point at a predetermined position of the roll map bar corresponding to the data on the position of the electrode;
• and
• a display unit connected to the data processing system to visually display the roll map on a screen.