Abstract: A stacked battery includes: a power generation element in which a plurality of electrodes and a plurality of separators are alternately stacked; an exterior member in which the power generation element is accommodated together with an electrolytic solution; and a bonding portion configured to bond an outermost layer of the power generation element and an inner side of the exterior member, wherein when the power generation element is viewed in a plan view from a stacking direction in which the electrodes and the separators are stacked, the bonding portion is located outside an effective region contributing to power generation in the power generation element and has a shape in which an outer peripheral edge of the bonding portion is continuous over an entire circumference of the bonding portion.

Abstract: [Problem] Provided are a stacked battery capable of improving a volume energy density while maintaining impact resistance, and a battery module includes a stacked battery. [Solution] The stacked battery 100 includes a power generation element 40 in which a plurality of electrodes 10, 20 and a plurality of separators 30 are alternately stacked, an exterior member 50 configured to accommodate the power generation element, first bonding portions 61 configured to bond the electrodes and the separators, and second bonding portions 62 configured to bond outermost layers 40a of the power generation element and an inner side 50a of the exterior member. The exterior member includes a joint portion 52 where peripheral edge portions 51 of the exterior member are overlapped and joined.

Abstract: A stacked battery includes: a power generation element in which a plurality of electrodes and a plurality of separators are alternately stacked; an exterior member in which the power generation element is accommodated together with an electrolytic solution; and a bonding portion configured to bond an outermost layer of the power generation element and an inner side of the exterior member, wherein when the power generation element is viewed in a plan view from a stacking direction in which the electrodes and the separators are stacked, the bonding portion is located outside an effective region contributing to power generation in the power generation element and has a shape in which an outer peripheral edge of the bonding portion is continuous over an entire circumference of the bonding portion.