MANUFACTURING METHOD OF LAMINATED ELECTRODE BODY

摘要

A positive-electrode belt-shaped sheet is cut while the positive-electrode belt-shaped sheet and a negative-electrode belt-shaped sheet are continuously sent, a cut positive-electrode sheet laminated on the uncut negative-electrode belt-shaped sheet via a separator layer is sent and clamped, the uncut negative-electrode belt-shaped sheet is cut at a cutting gap between the positive-electrode sheets laminated thereon, so as to form a sheet unit including the positive-electrode sheet and the negative-electrode sheet, a lamination shape of the sheet unit is measured so as to determine good or bad of the lamination shape, the sheet unit is classified based on a good/bad determination result, and the sheet units determined as good products is collectively laminated and pressed so as to obtain a laminated electrode body. Here, the positive-electrode belt-shaped sheet is cut while the positive-electrode belt-shaped sheet is clamped.

主权项

1. A manufacturing method of a laminated electrode body, comprising:
forming a separator layer on an electrode surface of at least one of a positive-electrode belt-shaped sheet and a negative-electrode belt-shaped sheet; cutting either one of the positive-electrode belt-shaped sheet and the negative-electrode belt-shaped sheet so as to form a positive-electrode sheet or negative-electrode sheet while continuously sending the either one of the positive-electrode belt-shaped sheet and the negative-electrode belt-shaped sheet by a feed roller; clamping and sending, by a clamp roller, the formed positive-electrode sheet or the formed negative-electrode sheet laminated, via the separator layer, on the other one of the negative-electrode belt-shaped sheet and the positive-electrode belt-shaped sheet, the other one of the negative-electrode belt-shaped sheet and the positive-electrode belt-shaped sheet being uncut; cutting the other one of the negative-electrode belt-shaped sheet and the positive-electrode belt-shaped sheet at a cutting gap between the positive-electrode sheets or negative-electrode sheets laminated on the other one of the negative-electrode belt-shaped sheet and the positive-electrode belt-shaped sheet, so as to obtain a sheet unit including the positive-electrode sheet and the negative-electrode sheet; measuring a lamination shape of the sheet unit so as to determine good or bad of the lamination shape; classifying the sheet unit into a good product when it is determined that the lamination shape of the sheet unit is good and classifying the sheet unit into a defective product when it is determined that the lamination shape of the sheet unit is bad; and laminating and pressing a plurality of sheet units determined as the good product, so as to obtain a laminated electrode body, wherein the either one of the positive-electrode belt-shaped sheet and the negative-electrode belt-shaped sheet is cut while the either one of the positive-electrode belt-shaped sheet and the negative-electrode belt-shaped sheet is clamped.