Method for manufacturing energy storage module

A method for manufacturing a power storage module, the power storage module including an electrode stack configured by stacking a plurality of electrodes each including a current collector provided with an active material layer along a first direction, and a sealing body made of a resin, the sealing body provided on the electrode stack so as to surround the electrode stack and sealing an internal space between the current collectors adjacent to each other, the method comprising:

• a stacking step of stacking the electrodes and sealing members made of a resin along the first direction to form a stack including the electrode stack and a resin stack containing a plurality of the sealing members;
• a restraining step of disposing a pair of restraining plates at both ends of the stack in the first direction and restraining the stack in the first direction by the pair of restraining plates after the stacking step;
• and
• a cutting step of cutting a part of the stack by a rotary blade with setting the first direction to an up-down direction in a state where the stack is restrained by the pair of restraining plates to form a cut surface after the restraining step, wherein
• the sealing member is a frame-shaped member provided on a peripheral edge portion of the electrode,
• the resin stack includes an inner frame region overlapping the electrode stack and an outer frame region protruding from the electrode stack along a second direction intersecting the first direction when viewed in the first direction,
• in the restraining step, the stack is restrained such that the outer frame region is exposed from the pair of restraining plates while the inner frame region is gripped along the first direction by the pair of restraining plates, and
• in the cutting step, the cut surface is formed by cutting an end portion of the outer frame region in the second direction while moving the rotary blade along a third direction intersecting the first direction and the second direction.