Abstract: An electrical junction box can include a case, a substrate connector, and a substrate. The substrate is temporarily fixed and soldered to the substrate connector. The substrate connector and the substrate are stored in the case. The substrate connector includes a pair of shaft-shaped temporary fixing protrusions. Each of the temporary fixing protrusions includes a positioning shaft that positions the substrate and a temporary fixing shaft that prevents the temporary fixing protrusions from coming loose from the substrate. The temporary fixing protrusions can be fitted into fitting holes in the substrate.

Abstract: An electrical junction box can include a case, a substrate connector, and a substrate. The substrate is temporarily fixed and soldered to the substrate connector. The substrate connector and the substrate are stored in the case. The substrate connector includes a pair of shaft-shaped temporary fixing protrusions. Each of the temporary fixing protrusions includes a positioning shaft that positions the substrate and a temporary fixing shaft that prevents the temporary fixing protrusions from coming loose from the substrate. The temporary fixing protrusions can be fitted into fitting holes in the substrate.

Abstract: A cell assembly (20) is formed by arranging an electrode body and electrolyte in an external case (12) having a through hole (41). A laser is applied to an annular portion (formed by Al or Al-based alloy) surrounding an opening end (41A) of the through hole (41) toward outside the case so as to form a welded base (45). A sealing film (54) is welded to the surface of the welded base directly or via a base film (52) welded in advance, so as to temporarily seal the through hole (41). The cell assembly (20) in the temporarily sealed state is subjected to initial charge and then a hole is opened through the film (54) so as to form a gas discharge passage for communication between inside and outside of the case (12), thereby discharging an excessive gas from the case (12) outside.