Apparatus and Method for Manufacturing Electrode Assembly and Method for Manufacturing Secondary Battery Comprising the Same

The present invention relates to a method for manufacturing an electrode assembly. The method for manufacturing the electrode assembly comprises: a step (a) of transferring a plurality of radical units one by one from a first set position to a second position; a step (b) of measuring a distance between a full width end that is an end of the first electrode in a full width direction and a full width end that is an end of the second electrode in a full width direction; a step (c) of measuring a distance (B) from a reference point (O) of the second set position to the full width end of the first electrode of the first radical unit; a step (d) of stacking the second radical unit on the first radical unit; a step (e) of measuring a distance (B) from the reference point (O) of the second set position to the full width end of the first electrode of the second radical unit; a step (f) of measuring a distance (C) between the full length end of the first electrode of the first radical unit and the full width end of the second electrode of the second radical unit by adding the distances (B, A) to each other and subtracting the distance (B) from the sum of the distances (B, A); and a step (g) of comparing the distances (C, A) to each other to determine whether stacking is defective.