Abstract: Provided is a cylindrical battery (10) comprising an outer covering can (16) which is in a bottomed cylindrical shape and accommodates an electrode body (14) and a sealing body (17) which closes an opening portion of the outer covering can (16), the sealing body (17) includes a current-collection plate (25) and a cap (26) which is placed on and secured to the current collection plate (25), and the current collection plate (25) includes a securing means which secures the outer peripheral portion of the cap (25).

Abstract: A first rotating element is a first sun gear that rotates with a rotor. A third rotating element is a first ring gear connected to a case. A fourth rotating element is a second ring gear that rotates with an input element. A second rotating element is a first carrier rotatably supporting a first pinion gear and a second pinion gear that rotate together. The first pinion gear meshes with the first sun gear and the first ring gear. The second pinion gear has a smaller diameter than the first pinion gear and meshes with the second ring gear. The first sun gear is supported in a radial direction with respect to the case via a first support bearing. The second ring gear and the input element are connected such that their relative movement in the radial direction is restricted.

Abstract: A polyester resin contains a polymer of an acid component (A) and an alcohol component (B). The component (A) contains 80 mol % or more of a 2,6-naphthalenedicarboxylic acid component with respect to a total amount of the component (A). The component (B) contains at least two types selected from the group consisting of 1,4-butanediol, 1,4-cyclohexanedimethanol, and ethylene glycol. The content of the at least one type of the component (B) is 80 mol % or more with respect to a total amount of the component (B).

Abstract: A cylindrical battery having a bottomed cylindrical outer can including a bottom surface part and a side surface part; a sealing body that closes an opening part of the outer can; and a gasket disposed between the outer can and the sealing body. The outer can has: a groove part that is formed such that a side surface section thereof extends from the outside to the inside and supports the sealing body with the gasket therebetween; and a shoulder part that is formed to face the groove part with the sealing body and the gasket therebetween and sandwiches the sealing body together with the groove part. At least a portion of the shoulder part extends radially inward of the sealing body from an inner end of the groove part, and an easily deformable part is formed on the shoulder part along the circumferential direction of the outer can.

Abstract: A method of manufacturing a battery includes: preparing an electrode group in which a separator and an electrode plate are stacked and wound, the electrode group having a recess in a first region continuous from an inner edge; bending an end of the electrode plate in a second region located more toward an outer edge than the first region, and joining the bent end to a current collector plate; inserting the electrode group into an outer can and causing the current collector plate and a bottom surface of the outer can to face each other; and inserting a pressing tool into a central space of the electrode group and pressing the current collector plate against the bottom surface to join the current collector plate to the outer can.

Abstract: A gasket of a cylindrical battery according to an embodiment of the present disclosure comprises a cylindrical part, and a ring part which extends from one end part of the cylindrical part in the axial direction toward an inner side thereof in the radial direction. A surface of the ring part which is opposite the cylindrical part side in the axial direction has, an approximately flat surface, A protrusion is provided on the side of the ring part which is toward the cylindrical part in the axial direction. Said protrusion: is positioned with gaps in the radial direction in relation to both the cylindrical part and an inner end of the ring part in the radial direction; and protrudes in the axial direction.

Abstract: A cylindrical battery comprises an electrode body in which a long positive electrode having a plurality of positive electrode lead portions and a long negative electrode are wound with a separator therebetween, a bottomed cylindrical external can that accommodates the electrode body, and a sealing body which is crimp fixed to an opening of the external can. The sealing body has a sealing plate and a current collector plate having a through-hole, and the plurality of positive electrode lead portions pass through the through-hole in the current collector plate and are bent and joined above the current collector plate.

Abstract: A sealed battery that is an example of an embodiment comprises: an electrode assembly; an outer housing can that houses the electrode assembly; and a sealing assembly that closes an opening of the outer can. The sealing assembly includes: a cap; and a current collector plate that is located closer to the electrode assembly than the cap and that is welded to the cap. The current collector plate has, in a portion thereof welded to the cap, a recess protruding toward the cap.

Abstract: A cylindrical battery having a bottomed tubular exterior can; an electrode body in the exterior can and around which a long positive electrode and a long negative electrode are wound with a separator therebetween; a plurality of negative-electrode lead parts extending from a long negative-electrode current collector of the negative electrode toward the bottom part of the exterior can; a first current-collector plate that is disposed on the bottom part side of the electrode body and that has at least two through-holes at the positions different from each other in the radial direction; and a second current-collector plate disposed between the first current-collector plate and the bottom part. The negative-electrode lead parts each pass through any one of the through-holes. Leading-end portions of the plurality of negative-electrode lead parts are sandwiched between the first current-collector plate and the second current-collector plate, and are electrically connected to the second current-collector plate.

Abstract: Provided is a cylindrical battery in which degradation of sealing properties is suppressed. A cylindrical battery according to an embodiment of the present disclosure comprises a bottomed cylindrical exterior body, an electrode body and a nonaqueous electrolyte that are accommodated in the exterior body, and a circular sealing body that seals an opening in the exterior body with a gasket, wherein the sealing body has a protrusion that abuts the end of the gasket on the outside of the cylindrical battery.

Abstract: Provided is a low-resistance sealed battery in which solidification cracking of a weld part of a negative electrode lead and an outer can is inhibited. A sealed battery according to one aspect of the present disclosure comprises: an electrode body obtained by winding a positive electrode and a negative electrode with a separator therebetween; a bottomed cylinder-shaped outer can that accommodates the electrode body; and a sealing body that blocks an opening part of the outer can. The outer can and a negative electrode lead connected to the negative electrode are welded at a weld part formed from the outside surface of the outer can to the negative electrode lead. The outer can is composed of a metal including Fe, the negative electrode lead is composed of a metal having Cu as a principal ingredient, and the Cu concentration of the weld part is 10 mass % or less.

Abstract: A cylindrical battery comprises: an outer can having a bottomed cylinder shape; an electrode body that is accommodated inside the outer can, and in which an elongated positive electrode and an elongated negative electrode having different polarities from each other are wound with a separator interposed therebetween; a metal plate that is disposed between the electrode body and a bottom part of the outer can; and a plurality of negative electrode lead parts that extend from the negative electrode towards the bottom part. A tip part of each negative electrode lead part is sandwiched between the metal plate and the bottom part, and is electrically connected to the bottom part.

Abstract: A cylindrical battery having a bottomed tubular exterior can; an electrode body in the exterior can and around which a long positive electrode and a long negative electrode are wound with a separator therebetween; a plurality of negative-electrode lead parts extending from a long negative-electrode current collector of the negative electrode toward the bottom part of the exterior can; a first current-collector plate that is disposed on the bottom part side of the electrode body and that has at least two through-holes at the positions different from each other in the radial direction; and a second current-collector plate disposed between the first current-collector plate and the bottom part. The negative-electrode lead parts each pass through any one of the through-holes. Leading-end portions of the plurality of negative-electrode lead parts are sandwiched between the first current-collector plate and the second current-collector plate, and are electrically connected to the second current-collector plate.

Abstract: A gasket is equipped with a cylindrically shaped cylindrical part, and a ring part which extends in a radially inward direction from one end section of the cylindrical part in the axial direction thereof. The cylindrical part has a projecting part which projects in a radially inward direction between both end sections thereof in the axial direction. The projecting part has a first angled section positioned on the ring part side thereof, and a second angled section positioned on the side thereof opposite the ring part, and if a sealing body is placed on the ring part, the first angled section is formed so as not to extend beyond the top surface of the flange section of the sealing body.

Abstract: A hermetically sealed battery which is an example of an embodiment is provided with: an electrode body having an electrode tab; an outer can in the shape of a bottomed cylinder for accommodating the electrode body; and a sealing body for closing an opening portion of the outer can. The sealing body includes: a first thin-walled portion formed in an annular shape; a valve portion which surrounds the first thin-walled portion, and which deforms in such a way as to protrude to the outside of the battery when the internal pressure in the battery rises; and a linear second thin-walled portion formed in the valve portion. The electrode tab is disposed in such a way as to intersect the second thin-walled portion, and is joined to an inner surface of the valve portion in such a way as to sandwich the second thin-walled portion.

Abstract: The secondary cell—includes an exterior can, a sealing body closing one end of the exterior can, an electrode group disposed inside the exterior can, and an insulating plate disposed between the sealing body and the electrode group. In the electrode group, a positive electrode and a negative electrode are wound in a spiral shape with a separator interposed between. The insulating plate is shaped as a disc having a lead hole penetrated by a positive electrode lead drawn out from the electrode group, and a center hole penetrating the center part of the insulating plate. The outer edge of the lead hole includes a curve part positioned along an arc that is concentric with respect to the outer circumference of the insulating plate as seen in plan view, and linear parts-positioned along a chord linking the two ends of the arc.

Abstract: A cylindrical battery having a bottomed cylindrical outer can including a bottom surface part and a side surface part; a sealing body that closes an opening part of the outer can; and a gasket disposed between the outer can and the sealing body. The outer can has: a groove part that is formed such that a side surface section thereof extends from the outside to the inside and supports the sealing body with the gasket therebetween; and a shoulder part that is formed to face the groove part with the sealing body and the gasket therebetween and sandwiches the sealing body together with the groove part. At least a portion of the shoulder part extends radially inward of the sealing body from an inner end of the groove part, and an easily deformable part is formed on the shoulder part along the circumferential direction of the outer can.

Abstract: A gasket of a cylindrical battery according to an embodiment of the present disclosure comprises a cylindrical part, and a ring part which extends from one end part of the cylindrical part in the axial direction toward an inner side thereof in the radial direction. A surface of the ring part which is opposite the cylindrical part side in the axial direction has, an approximately flat surface, A protrusion is provided on the side of the ring part which is toward the cylindrical part in the axial direction. Said protrusion: is positioned with gaps in the radial direction in relation to both the cylindrical part and an inner end of the ring part in the radial direction; and protrudes in the axial direction.

Abstract: A slurry for forming a mold includes a silica sol as a dispersion medium and niobia-stabilized zirconia dispersed in the silica sol.

Abstract: Provided is a Ni-based single crystal superalloy containing 6% by mass or more and 12% by mass or less of Cr, 0.4% by mass or more and 3.0% by mass or less of Mo, 6% by mass or more and 10% by mass or less of W, 4.0% by mass or more and 6.5% by mass or less of Al, 0% by mass or more and 1% by mass or less of Nb, 8% by mass or more and 12% by mass or less of Ta, 0% by mass or more and 0.15% by mass or less of Hf, 0.01% by mass or more and 0.2% by mass or less of Si, and 0% by mass or more and 0.04% by mass or less of Zr, and optionally containing at least one element selected from B, C, Y, La, Ce, and V, with a balance being Ni and inevitable impurities.