A non-aqueous electrolyte secondary battery including an electrode body having a positive electrode and a negative electrode, a non-aqueous electrolyte, and a battery case is provided. The battery case includes a case body having an opening and configured to house the electrode body and the non-aqueous electrolyte, and a lid configured to close the opening. The lid includes a plate-shaped lid body, a valve portion configured to open when the internal pressure of the battery case is higher than a valve opening pressure determined in advance, and a degassing portion configured to set to be an opening pressure higher than the valve opening pressure of the valve portion.

An energy storage apparatus includes an energy storage device and an outer case. The outer case includes: an outer case body; and a lid body having a plurality of fixing portions, and fixed to the outer case body by the plurality of fixing portions. The plurality of fixing portions and the plurality of fixing portions are arranged at different positions in an arrangement direction of the outer case body and the lid body, and have the same rigidity.

An energy storage apparatus includes an energy storage device and an outer case. The outer case includes: an outer case body; and a lid body having a plurality of fixing portions, and fixed to the outer case body by the plurality of fixing portions. The plurality of fixing portions and the plurality of fixing portions are arranged at different positions in an arrangement direction of the outer case body and the lid body, and have the same rigidity.

A battery includes a battery element, a housing body, and a valve device. The housing body is constituted by at least one laminate and includes an interior space in which the battery element is housed, a first housing portion that covers the interior space from a first side, and a second housing portion that covers the interior space from a second side. The valve device is attached to the housing body and can make interior space of housing body be in communication with an external space. A joined edge portion is formed in housing body as a result of the first and second housing portion being fused along respective peripheral edge portions. The valve device is sandwiched between the first and second housing portion in the joined edge portion, and an inner end of the valve device protrudes from an inner edge of joined edge portion toward the interior space.

An electricity storage device has an electricity storage element sealed in a package member of a laminate material including a thermal adhesive resin layer. The package member has a housing portion having a substantially rectangular opening and formed to have a predetermined depth; a flange portion protruding outward from the circumferential edge of the opening; and a lid portion covering the opening and thermally bonded to the flange portion. The electricity storage element has a pair of electrode terminals protruding respectively from opposite longer-side edges of the opening and held between the flange portion and the lid portion.

A power storage device includes: a module stacked body including at least one power storage module including a plurality of stacked electrodes; and a housing constituting a first sealed space for accommodating the module stacked body, wherein the housing has a housing body including a cylindrical side wall extending along a stacking direction in the module stacked body and a plate-shaped bottom wall closing one end of the side wall and a lid being joined to the other end of the side wall and constrains the module stacked body in the stacking direction of the electrode inside the first sealed space by deforming at least a portion of the bottom wall and the lid so as to come close to each other due to an air pressure difference between the inside and outside of the first sealed space.

A battery and capacitor assembly for a hybrid vehicle includes a plurality of battery cells, a plurality of capacitor cells, a cooling plate, a pair of end brackets, and a housing. The plurality of capacitor cells are arranged adjacent to the plurality of battery cells such that the plurality of battery cells and the plurality of capacitor cells form a cell stack. The pair of end brackets are disposed at opposite ends of the cell stack and are attached to the cooling plate. The pair of end brackets compress the plurality of battery cells and the plurality of capacitor cells. The housing is attached to the cooling plate and encloses the cell stack and the pair of end brackets.

A battery and capacitor assembly for a hybrid vehicle includes a plurality of battery cells, a plurality of capacitor cells, a cooling plate, a pair of end brackets, and a housing. The plurality of capacitor cells are arranged adjacent to the plurality of battery cells such that the plurality of battery cells and the plurality of capacitor cells form a cell stack. The pair of end brackets are disposed at opposite ends of the cell stack and are attached to the cooling plate. The pair of end brackets compress the plurality of battery cells and the plurality of capacitor cells. The housing is attached to the cooling plate and encloses the cell stack and the pair of end brackets.

A power supply device includes battery cells each having a rectangular external shape, a separator disposed between the battery cells, a pair of end plates that are disposed on respective ends of a battery assembly in which the separator and the battery cells are stacked, and a bind bar that binds the pair of end plates. The separator has insulating rib parts that protrude from both surfaces of the separator, and the insulating rib parts of the separator stacked on each surface of the battery cell are stacked on each other on a bottom surface of the battery cell. The insulating rib parts are stacked on each other on the bottom surface of the battery cell by inserting an insertion rib provided in one of the stacked insulating rib parts into an insertion groove provided in the other of the stacked insulating rib parts.

An energy storage apparatus includes an energy storage device including an electrode terminal which protrudes in a first direction, an outer housing containing the energy storage device, an outer electrode attached to an outside of the outer housing and protruding in the first direction, an electrical device disposed inside the outer housing, a first electrical conductor connecting the outer electrode and the electrical device, and a second electrical conductor connecting the electrical device and the electrode terminal. When viewed from the first direction, the electrical device is disposed between the electrode terminal and the outer electrode.