Abstract: A battery including: a battery can including a cylinder portion including an opening edge portion at one end portion of the cylinder portion and a bottom portion that closes the other end portion of the cylinder portion; an electrode body; a sealing member that seals an opening of the opening edge portion. The sealing member includes: a sealing plate; a cap connected to the sealing plate and electrically insulated from the sealing plate; and a sealing portion sealing a space between the cylinder portion and the cap. The cap includes: a ring-shaped top plate portion opposing the opening edge portion in an axial direction of the cylinder portion; and a side wall portion covering an outer circumferential surface of the cylinder portion. The sealing portion may be a gasket provided between the cap and the cylinder portion in a compressed state. The cap is electrically connected to the cylinder portion.

Abstract: A cylindrical battery wherein a central part of a sealing plate, fixed by swaging to an opening of an external packaging can, is configured to be warped toward the inner part of the battery. One embodiment is provided with: an electrode body in which a positive electrode plate and a negative electrode plate are rolled with a separator being disposed therebetween; an electrolytic solution; an external packaging can which has a bottomed cylindrical shape and which houses the electrode body and the electrolytic solution; and a sealing plate which is fixed by swaging to an opening of the external packaging can with a gasket therebetween. In the sealing plate, prior to the swage fixing, an outer peripheral edge to be fixed by swaging to the external packaging can is formed inclined so as to be directed to the inner part of the battery, toward radially outward.

Abstract: A battery including: a battery can including a cylindncal portion, a bottom wall closing one end of the cylindrical portion, and an open rim continuing to the other end of the cylindncal portion; an electrode body housed in the cylindrical portion; and a sealing body fixed to the open rim so as to seal an opening defined by the open rim. The sealing body includes a sealing plate, and a gasket disposed at a peripheral portion of the sealing plate. The gasket has an inner ring portion disposed on the peripheral portion on a side facing the electrode body, an outer ring portion disposed on the peripheral portion on a side opposite to the side facing the electrode body, and a side wall portion covering an end surface of the peripheral portion. The sealing plate and the gasket are integrally molded to be in close contact with each other.

Abstract: A battery module including a plurality of batteries, and a busbar electrically connecting the batteries. The battery includes: a battery can including a cylindrical portion, a bottom wall closing one end of the cylindrical portion, and an open rim continuing to the other end of the cylindrical portion; an electrode body; and a sealing body which seals an opening defined by the open rim. The sealing body has a first principal surface facing an interior of the battery can, a second principal surface opposite to the first principal surface, and a side surface connecting the first principal surface with the second principal surface. The busbar has a plurality of through-holes fitted with the batteries. The open rim of each of the batteries fitted into the through-holes is at least partially in contact with the busbar. The sealing body and the busbar are electrically insulated from each other.

Abstract: A battery including: a battery can having a cylindrical portion, a bottom wall closing one end of the cylindrical portion, and an open rim continuing to the other end of the cylindrical portion; an electrode body housed in the cylindrical portion; and a sealing body fixed to the open rim so as to seal an opening defined by the open rim. The sealing body includes a sealing plate and a gasket disposed at a peripheral portion of the sealing plate. The gasket is compressed between an end surface of the peripheral portion and the open rim, in a radial direction of the opening.

Abstract: A battery includes: a batter can having a cylindrical portion, a bottom wall closing one end of the cylindrical portion, and an open rim continuing to the other end of the cylindrical portion; an electrode body housed in the cylindrical portion; a sealing body fixed to the open rim so as to seal an opening defined by the open rim; and a electrically insulating film disposed on at least part of at least an inner wall of the battery can. The sealing body includes a sealing plate and a gasket disposed at a peripheral portion of the sealing plate. The insulating film has a first portion covering at least part of a first region of the inner wall corresponding to between an end of the gasket on the electrode body side and an end of the electrode body on the gasket side.

Abstract: A battery including: a battery can having a cylindrical portion, a bottom wall closing one end of the cylindrical portion, and an open rim continuous with the other end of the cylindrical portion; an electrode body housed in the cylindrical portion; and a sealing body fixed to the open rim so as to seal an opening defined by the open rim. The sealing body includes a sealing plate and a gasket disposed at a peripheral portion of the sealing plate. The gasket has at least one protruding portion configured to restrict insertion of the sealing body into the open rim.

Abstract: In a battery module including a plurality of battery blocks, the battery block is configured such that a plurality of assembled batteries each of which is formed of the plurality of batteries are arranged in parallel. The battery has a positive-electrode terminal and a negative electrode terminal on one end portion of the battery. The assembled battery includes a positive electrode bus bar for connecting the plurality of batteries in parallel and a negative electrode bus bar for connecting the plurality of batteries in parallel, which are disposed on one end portions of the batteries. On a boundary portion between the battery blocks, the positive electrode bus bars of the respective assembled batteries of one battery block and the negative electrode bus bars of the respective assembled batteries of the other battery block are respectively connected to each other in series by an inter-block connecting bus bar.

Abstract: A battery block includes assembled batteries that are arranged in parallel to each other, and the plurality of assembled batteries are each formed of a plurality of batteries as a unit. Each of the batteries has a positive-electrode terminal and a negative-electrode terminal on one end portion of the battery. The assembled battery includes: the plurality of batteries which are arranged in a row with one end portions of the batteries directed in the same direction; an insulation holder which is arranged on one end portion side of the batteries and holds the batteries; and a positive-electrode bus bar and a negative-electrode bus bar arranged on one end portions of the batteries. The positive-electrode bus bar and the negative-electrode bus bar are respectively held by holding portions which are formed on the insulation holder along a row direction and in parallel to each other.

Abstract: A battery module includes: cells, wherein each of the cells including a positive electrode terminal and a negative electrode terminal disposed on one end part, the one end parts being positioned on a same side, and a battery block is constituted by a row of the plurality of cells. The battery module further includes a plate disposed above the one end parts of the cells being arranged, and the plate includes: holes through which the positive electrode terminal and the negative electrode terminal are exposed; and a plurality of conductive members disposed on a surface. The plurality of conductive members extend along the row, two of the plurality of conductive members are disposed in the battery block, and each of the plurality of conductive members includes terminal connecting parts connected through the holes to the terminals of a same pole.

Abstract: A power storage device includes a plurality of battery modules, a rack for arranging and housing the plurality of battery modules, and a wall plate attached so as to close a back side-surface of the rack. The wall plate is transparent at least in part and is provided facing the connector terminal detachably connected to the battery module.

Abstract: A cylindrical battery according to an aspect of the present invention includes an electrode assembly including a positive electrode plate and a negative electrode plate wound together via a separator, an electrolytic solution, a bottomed cylindrical housing can, and a sealing unit fixed by crimping of an open end of the housing can via a gasket. The sealing unit includes a valve member having a circular outline, a metal plate connected to a central portion of the valve member so as to be farther inside the battery than the valve member, and an annular insulating member disposed between an outer peripheral portion of the valve member and an outer peripheral portion of the metal plate. The valve member has a sloping region in which the thickness decreases or increases continuously along the radial direction.

Abstract: A cylindrical battery in an aspect of the present invention includes an electrode body formed by winding a positive electrode plate and a negative electrode plate with a separator interposed therebetween; an electrolyte; a bottomed cylindrical outer can; and a sealing body crimped to an opening of the outer can via a gasket. The sealing body includes a valve body having an annular protrusion part, an insulating member disposed on an inner circumference of the protrusion part of the valve body and having a skirt portion, and a metal plate disposed on an inner circumference of the skirt portion of the insulating member and connected to a center portion of the valve body. The metal plate is crimped with the protrusion part of the valve body via the insulating member.

Abstract: A cylindrical battery having a sealing unit which includes at least a valve member, a metal plate disposed farther inside the battery than the valve member and having a joint portion connected to the valve member, and an annular insulating member disposed between an outer peripheral portion of the valve member and an outer peripheral portion of the metal plate. The metal plate has a groove-shaped thin portion disposed around the joint portion, and straight portions that have different angles to the normal to the metal plate are disposed on an inner peripheral side and an outer peripheral side of a cross section of the thin portion perpendicular to the longitudinal direction.

Abstract: A battery module includes a plurality of battery cells each having a safety mechanism, a cell case having a plurality of battery housing parts for housing the plurality of battery cells respectively in a predetermined arrangement, an insulating member disposed on one side of each of the battery cells, and a duct serving as a route for exhausting exhaust gas discharged from the battery cells. The battery housing parts have a plurality of openings for housing the battery cells. The insulating member has a through hole formed at a position facing an opening of the plurality of openings that houses corresponding one of the battery cells, and a lid part for closing an opening of the plurality of openings that houses no battery cell. The exhaust gas is discharged to the route of the duct through the through hole of the insulating member.

Abstract: A power storage device includes a plurality of battery modules, a rack for arranging and housing the plurality of battery modules, and a wall plate attached so as to close a back side-surface of the rack. The wall plate is transparent at least in part and is provided facing the connector terminal detachably connected to the battery module.

Abstract: A cylindrical battery having a sealing unit which includes at least a valve member, a metal plate disposed farther inside the battery than the valve member and having a joint portion connected to the valve member, and an annular insulating member disposed between an outer peripheral portion of the valve member and an outer peripheral portion of the metal plate. The metal plate has a groove-shaped thin portion disposed around the joint portion, and straight portions that have different angles to the normal to the metal plate are disposed on an inner peripheral side and an outer peripheral side of a cross section of the thin portion perpendicular to the longitudinal direction.

Abstract: A cylindrical battery in an aspect of the present invention includes an electrode body formed by winding a positive electrode plate and a negative electrode plate with a separator interposed therebetween; an electrolyte; a bottomed cylindrical outer can; and a sealing body crimped to an opening of the outer can via a gasket. The sealing body includes a valve body having an annular protrusion part, an insulating member disposed on an inner circumference of the protrusion part of the valve body and having a skirt portion, and a metal plate disposed on an inner circumference of the skirt portion of the insulating member and connected to a center portion of the valve body. The metal plate is crimped with the protrusion part of the valve body via the insulating member.

Abstract: A cylindrical battery according to an aspect of the present invention includes an electrode assembly including a positive electrode plate and a negative electrode plate wound together via a separator, an electrolytic solution, a bottomed cylindrical housing can, and a sealing unit fixed by crimping of an open end of the housing can via a gasket. The sealing unit includes a valve member having a circular outline, a metal plate connected to a central portion of the valve member so as to be farther inside the battery than the valve member, and an annular insulating member disposed between an outer peripheral portion of the valve member and an outer peripheral portion of the metal plate. The valve member has a sloping region in which the thickness decreases or increases continuously along the radial direction.

Abstract: A battery module includes: a plurality of battery cells held in a case; and a collector plate disposed on one side or the other side of the plurality of battery cells. The collector plate includes connection terminals connected to a collector plate main body so that the plurality of connection terminals are disposed to face an electrode provided in each of the battery cells. In at least one of the electrodes, the plurality of the connection terminals facing the at least one electrode include a first connection terminal welded to the electrode and a second connection terminal not welded to the electrode.