Electricity storage device and method for manufacturing electricity storage device

An electricity storage device in which a plurality of electrodes in which a positive electrode layer is provided on one surface of a collector plate and a negative electrode layer is provided on the other surface of the collector plate are stacked via separators, the electricity storage device comprising:

• a plurality of spacers arranged along peripheral edges of the collector plates between the collector plates adjacent to each other in a stacking direction;
• and
• a resin frame covering outer peripheries of the plurality of spacers,
• wherein the spacer has a first portion overlapping with the resin frame when viewed from the stacking direction and a second portion extending inward from the resin frame when viewed from the stacking direction,
• wherein the first portion is bonded to the resin frame,
• wherein the second portion is bonded to the collector plate, and
• wherein the resin frame is formed by injection molding.

An electricity storage device in which a plurality of electrodes in which a positive electrode layer is provided on one surface of a collector plate and a negative electrode layer is provided on the other surface of the collector plate are stacked via separators, the electricity storage device comprising:

• a plurality of spacers arranged along peripheral edges of the collector plates between the collector plates adjacent to each other in a stacking direction;
• and
• a resin frame covering outer peripheries of the plurality of spacers,
• wherein an outer periphery of the collector plate is arranged in the resin frame, and
• wherein the outer periphery of the spacer has a convex shape toward the resin frame.

A method for manufacturing an electricity storage device, comprising processes of:

• fixing spacers to peripheral edges of collector plates in electrodes in which a positive electrode layer is provided on one surface of the collector plate and a negative electrode layer is provided on the other surface of the collector plate;
• stacking a plurality of electrodes to which the spacers are fixed;
• and
• forming a resin frame by injection molding or hot plate welding to the spacers so as to cover outer peripheries of the spacers fixed to the stacked plurality of electrodes.