MANUFACTURING METHOD OF POWER STORAGE MODULE, AND POWER STORAGE MODULE

To provide a manufacturing method of a power storage module capable of satisfactorily injecting an electrolyte into an electrode stacked body.SOLUTION: A manufacturing method of a power storage module includes: a process of preparing a lamination member, the lamination member including an electrode stacked body, a resin member disposed along an outer edge of the electrode stacked body when viewed from a thickness direction, and a nest having one end positioned inside the electrode stacked body and the other end protruding outside the resin member in a first direction orthogonal to the thickness direction; a process of forming an injecting frame on a side surface of the lamination member extending in the thickness direction; and a process of pulling out the nest from the lamination member in the first direction, after the injecting frame formation process, to form a through hole extending in the first direction. The nest has a split extending from the one end to the other end side and passing through in the thickness direction. The manufacturing method of the power storage module includes a process of forming a support that maintains a shape of the through hole in the thickness direction by filling up the split with resin.SELECTED DRAWING: Figure 1 【課題】電極積層体内部に電解液を良好に注液できる蓄電モジュールの製造方法の提供。【解決手段】電極積層体と、厚さ方向から見て電極積層体の外縁に沿って配置された樹脂部材と、厚さ方向に直交する第１方向において、一端部が電極積層体の内部に位置し、かつ他端部が樹脂部材の外部に突出した入れ子とを有する積層部材を準備する工程と、積層部材において厚さ方向に延在する側面に注液枠を形成する工程と、注液枠形成工程後に、積層部材から入れ子を上記第１方向に引き抜き、第１方向に延在する貫通孔を形成する工程と、を有する蓄電モジュールの製造方法であって、入れ子は、一端部から他端部側に向かって延在し、かつ、厚さ方向において貫通した切れ目部を有し、切れ目部に樹脂を充填することで、厚さ方向において貫通孔の形状を保持する支柱を形成する工程を有する、蓄電モジュールの製造方法である。【選択図】図１