METHOD OF PRODUCING SECONDARY BATTERY

To provide a method of producing a secondary battery capable of stabilizing a coating width of a mixture paste coated on an electrode base material.SOLUTION: A method of producing a secondary battery includes a simultaneous coating step of coating one strip of a positive electrode mixture paste 23A and two strips of an insulation paste 24A on a positive electrode base material 22 so that one strip of the insulating paste 24A is adjacent to each end one by one in a width direction in one strip of the positive electrode mixture paste 23A using a discharge part 34A capable of discharging the positive electrode mixture paste 23A and the insulating paste 24A onto the positive electrode base material 22. Based on a detection result of a coating width W1 of the positive electrode mixture paste 23A in the simultaneous coating step by an image inspection section 35, the simultaneous coating step includes a gap adjustment step of changing a distance of the discharge part 34A and the positive electrode base material 22 so that the coating width W1 of the positive electrode mixture paste 23A may be brought close to a target value.SELECTED DRAWING: Figure 5 【課題】電極基材に塗工された合剤ペーストの塗工幅を安定させることが可能な二次電池の製造方法を提供する。【解決手段】正極合剤ペースト２３Ａ及び絶縁ペースト２４Ａを正極基材２２上に吐出可能な吐出部３４Ａを用い、１条の正極合剤ペースト２３Ａにおける幅方向の各端に１つずつ１条の絶縁ペースト２４Ａが隣接するように、１条の正極合剤ペースト２３Ａと２条の絶縁ペースト２４Ａとを正極基材２２上に塗工する同時塗工工程を含み、同時塗工工程は、画像検査部３５による同時塗工工程における正極合剤ペースト２３Ａの塗工幅Ｗ１の検出結果に基づいて、正極合剤ペースト２３Ａの塗工幅Ｗ１を目標値に近づけるように、吐出部３４Ａと正極基材２２との距離を変えるギャップ調整工程を含む。【選択図】図５