Abstract: A laminated battery has a battery element and a laminate exterior body that seals the battery element. The laminate exterior body includes at least a resin layer and a metal layer that are laminated. The battery element includes substantially right-angled portions, and horizontal portions that are horizontal shaped. At 80% or more of areas of the metal layer that face the substantially right-angled portions of the battery element, a thickness T1 of the metal layer, with respect to a thickness T2 of the metal layer of the laminate exterior body that faces the horizontal portions of the battery element, satisfies a relationship of formula |T1?T2|/T2×100(%)?10%.

Abstract: A power storage cell includes: an electrode assembly constituted of a wound body in which a plurality of positive electrode tabs and a plurality of negative electrode tabs are wound to protrude upward; a cell case; and an insulating member. The cell case has a case main body and a lid. The insulating member has a covering portion that covers an upper surface of the electrode assembly, and the covering portion has a holding portion that holds an electrolyte solution leaked from the electrode assembly.

Abstract: A power storage cell includes: an electrode assembly; a cell case; and an external terminal. The cell case has a case main body and a lid. The lid has a lid main body charged positively or negatively, an inversion plate that is able to short-circuit the lid main body and the external terminal, and a protrusion protruding from the inversion plate toward the external terminal. The inversion plate is deformable between a steady-state shape and an inversion shape, the steady-state shape being a shape curved to project in a direction away from the external terminal, the inversion shape being a shape curved to project toward the external terminal with the inversion plate being in contact with the external terminal. The external terminal has a holding portion that holds the protrusion when the inversion plate is in the inversion shape.

Abstract: An apparatus for manufacturing a secondary battery includes: a conveying section that conveys a laminate-type secondary battery having a laminate outer package; plural contact rollers provided on a conveying path of the conveying section, the plural contact rollers having different contact angles with respect to an edge seal part of the laminate outer package being conveyed; and opposition rollers respectively disposed in opposition to the contact rollers, which, together with the contact rollers, fold the edge seal part of the laminate outer package.

Abstract: A power storage cell includes an electrode assembly, a cell case, and an external terminal. The cell case has a case main body and a lid. The lid has a lid main body, and an inversion plate that is able to short-circuit the lid main body and the external terminal. The inversion plate has: a base portion; an inversion portion connected to inside of the base portion, the inversion portion being able to come into contact with the external terminal; and a low-elastic member made of a conductive material having an elastic modulus smaller than an elastic modulus of the inversion portion, the low-elastic member being provided on a surface of the inversion portion facing the external terminal. The low-elastic member is elastically deformed with the low-elastic member being sandwiched between the inversion portion and the external terminal when the inversion portion is inverted.

Abstract: A power storage cell comprises an electrode assembly, a cell case, and an external terminal. The cell case has a case body and a lid. The lid has a lid body electrically charged with the same polarity as that of a positive electrode or a negative electrode, an invertible plate capable of short-circuiting between the lid body and the external terminal, and a prevention part connected to the invertible plate. The invertible plate is deformable between a normal shape and an inverted shape. The lid body has a receiving portion that receives the prevention part when the invertible plate is in the inverted shape. The receiving portion allows the prevention part to pass therethrough when the invertible plate is deforming from the normal shape to the inverted shape, and is in contact with the prevention part when the invertible plate is in the inverted shape.

Abstract: A power storage cell includes: an electrode assembly; and a cell case that accommodates the electrode assembly. The cell case has a case main body provided with an opening that opens upward, a lid connected to the case main body, and an elastic member disposed between the case main body and the electrode assembly. The elastic member has a center-facing portion facing a central portion of the electrode assembly, and the center-facing portion has a shape curved to protrude in a direction away from the electrode assembly.

Abstract: A power storage cell comprises an electrode assembly including a plurality of tabs, a cell case, an external terminal, a connecting member, and an insulating member. The connecting member has a current collector plate connected to the plurality of tabs, and a connecting pin connecting the current collector plate and the external terminal. The insulating member includes an insulator that has a shape surrounding the connecting pin and that insulates the connecting pin from the cell case. The connecting pin has a covered portion covered with the insulator, and the covered portion has a fuse portion.

Abstract: A power storage cell includes an electrode assembly, a cell case, and an external terminal. The cell case has a case main body and a lid. The lid has a lid main body connected to an opening of the case main body and charged positively or negatively in the electrode assembly, and a short-circuit member connected to the lid main body, the short-circuit member being able to short-circuit the lid main body and the external terminal. The external terminal includes a terminal plate. The short-circuit member includes an elastic portion made of a conductive resin. The elastic portion is separated from the terminal plate when an internal pressure of the cell case is less than a predetermined pressure, and is elastically deformed to come into contact with the terminal plate when the internal pressure of the cell case is equal to or more than the predetermined pressure.

Abstract: A method of manufacturing a power storage cell includes: preparing a case main body, a lid main body, and an inversion plate; welding the inversion plate to the lid main body; and connecting the lid main body to an opening of the case main body. The lid main body prepared in the preparing includes a pressure release valve. In the welding, the welding of the inversion plate to the lid main body is started from an opposite portion of the inversion plate that is located opposite to a side of the inversion plate facing the pressure release valve, and after welding a periphery of the inversion plate, the welding of the inversion plate to the lid main body is ended at the opposite portion.

Abstract: A battery, including: an electrode body; a side face member; and a laminate film covering the electrode body and the side face member, in which: in a case in which the battery is viewed laterally from a side of the side face member, an outer edge of the side face member is positioned further toward an inner side than an outer edge of the electrode body, the laminate film is disposed so as to cover a face configuring the outer edge of the side face member and a face configuring the outer edge of the electrode body, a fused part X, at which respective inner faces of the laminate film are fused together, is disposed on the side face member, and a bent part at a starting point of the fused part X at a side of the side face member has a curved shape.