Abstract: A load applicator includes an elastic mechanism including elastic bodies, a first member configured to move in accordance with contraction of power storage cells, a second member provided opposite to the first member across the elastic mechanism, a switching device, and a restriction member. The elastic mechanism has a first form wherein a first restraint load is applied to a power storage module when the power storage module expands by a first dimension, and a second form wherein a second restraint load larger than the first restraint load is applied to the power storage module when the power storage module expands by the first dimension. The switching device performs an operation switching from the first form to the second form in a case where a restraint load smaller than the first restraint load is applied to the power storage module when the power storage module expands by the first dimension.

Abstract: A load applicator includes an elastic mechanism, a first member configured to move in accordance with contraction of power storage cells, a second member provided on a side opposite to the first member across the elastic mechanism, and a switching device. The elastic mechanism has a first form in which a first restraint load is applied to the power storage module when the power storage module expands by a first dimension, and a second form in which a second restraint load larger than the first restraint load is applied to the power storage module when the power storage module expands by the first dimension. The switching device performs an operation to switch from the first form to the second form in a case where a restraint load smaller than the first restraint load is applied to the power storage module when the power storage module expands by the first dimension.

Abstract: A secondary battery includes an electrode, a positive electrode current collector, a negative electrode current collector, a positive electrode terminal, a negative electrode terminal, and an insulating plate. The positive electrode terminal and the negative electrode terminal each have a main side surface and a sub side surface having an area smaller than that of the main side surface. The positive electrode terminal and the negative electrode terminal are arranged so that the main side surface of the positive electrode terminal and the main side surface of the negative electrode terminal face each other. The insulating plate is arranged between the main side surface of the positive electrode terminal and the main side surface of the negative electrode terminal.

Abstract: A secondary battery includes a positive electrode, a negative electrode, a single positive electrode terminal formed in a flat plate shape, a single negative electrode terminal formed in a flat plate shape, a holder holding the single positive and negative electrode terminals, and a laminate exterior body. The single positive and negative electrode terminals each have a single protruding portion protruding from the laminate exterior body in one direction. An insulating plate is arranged between main side surfaces of the single protruding portions of the terminals. On one side of the insulating plate in a facing direction, only the single protruding portion of the positive terminal protrudes from the laminate exterior body, and on the other side of the insulating plate in the facing direction, only the single protruding portion of the negative terminal protrudes from the laminate exterior body.

Abstract: A load applicator includes an elastic mechanism, a first member configured to move in accordance with contraction of power storage cells, a second member provided on a side opposite to the first member across the elastic mechanism, and a switching device. The elastic mechanism has a first form in which a first restraint load is applied to the power storage module when the power storage module expands by a first dimension, and a second form in which a second restraint load larger than the first restraint load is applied to the power storage module when the power storage module expands by the first dimension. The switching device performs an operation to switch from the first form to the second form in a case where a restraint load smaller than the first restraint load is applied to the power storage module when the power storage module expands by the first dimension.

Abstract: A secondary battery includes an electrode, a positive electrode current collector, a negative electrode current collector, a positive electrode terminal, a negative electrode terminal, and an insulating plate. The positive electrode terminal and the negative electrode terminal each have a main side surface and a sub side surface having an area smaller than that of the main side surface. The positive electrode terminal and the negative electrode terminal are arranged so that the main side surface of the positive electrode terminal and the main side surface of the negative electrode terminal face each other. The insulating plate is arranged between the main side surface of the positive electrode terminal and the main side surface of the negative electrode terminal.

Abstract: A power storage device includes a power storage stack and a housing case. In the power storage stack, a plurality of unit cells and a plurality of spacers are alternately stacked in a first direction. A first support surface of each spacer among the plurality of spacers is angled corresponding to and is in contact with a first tapered surface of the unit cell that is adjacent to the spacer in the first direction. A second support surface of each spacer among the plurality of spacers is angled corresponding to and is in contact with a second tapered surface of the unit cell that is adjacent to the spacer in the first direction. The plurality of spacers are each formed of a thermoplastic resin.