Power storage module

An electricity-storage module comprising:

• a stacked body that includes a plurality of electrodes which are stacked along a first direction;
• and
• a sealing body that is provided to the stacked body so as to surround a plurality of edge portions of the plurality of electrodes,
• wherein the plurality of electrodes include a plurality of bipolar electrodes, a negative terminal electrode, and a positive terminal electrode,
• wherein each of the plurality of bipolar electrodes includes a first electrode plate, a first positive electrode provided on a first surface of the first electrode plate, and a first negative electrode provided on a second surface of the first electrode plate which is opposite to the first surface of the first electrode plate,
• wherein the negative terminal electrode includes a second electrode plate and a second negative electrode provided on a second surface of the second electrode plate, and is disposed at one end of the stacked body in the first direction such that the second surface of the second electrode plate is a first inner side of the stacked body,
• wherein the positive terminal electrode includes a third electrode plate and a second positive electrode provided on a first surface of the third electrode plate, and is disposed at an other end of the stacked body in the first direction such that the first surface of the third electrode plate is a second inner side of the stacked body,
• wherein the sealing body includes a plurality of first sealing portions which are joined to the plurality of edge portions of the plurality of electrodes, and a second sealing portion that is joined to each of the plurality of first sealing portions so as to surround the plurality of first sealing portions from an outer side,
• wherein the second sealing portion includes a first overlapping portion that is provided on a third sealing portion of the plurality of first sealing portions at the one end of the stacked body so as to overlap the third sealing portion which is joined to an edge portion of the negative terminal electrode, the edge portion of the negative terminal electrode being of the plurality of edge portions, and
• wherein the first overlapping portion includes a regulation portion configured to regulate deformation of the third sealing portion along the first direction;
• wherein the third sealing portion includes a first surface of the third sealing portion and a second surface of the third sealing portion, the second surface of the third sealing portion being opposite to the first surface of the third sealing portion in the first direction;
• wherein the second surface of the third sealing portion connects to a first surface of the second electrode plate, the first surface of the second electrode plate being opposite to the second surface of the second electrode plate in the first direction;
• wherein at least some of the first surface of third sealing portion is welded to the first overlapping portion.