WINDING DEVICE

PROBLEM TO BE SOLVED: To provide a winding device capable of improving productivity.SOLUTION: A winding device 30 comprises: tab welding devices 35 and 36 for welding tabs; detection sensors 33 and 34 for detecting predetermined positions on an electrode sheet; a correction mechanism 37 arranged between both tab welding devices 35 and 36; pinch rollers 38a and 38b arranged downstream of the second tab welding device 36; and a control unit 50 electrically connected to these components. The control unit 50 adjusts a conveyance amount of the electrode sheet by the pinch rollers 38a and 38b based on a result of detection by the second detection sensor 34, and adjusts an amount of correction by the correction mechanism 37 based on a result of detection by both detection sensors 33 and 34. Thereby, a second portion to be welded on the electrode sheet is positioned at a location of the second tab welding device 36, and a first portion to be welded is positioned at a location of the first tab welding device 35.