Abstract: A current collector electrically connected to a first electrode plate or a second electrode plate includes a tubular current collection section. An external terminal electrically connected to the current collector includes a tubular terminal section into which the current collection section is inserted. The current collection section has, before being inserted into the terminal section, a greater outer diameter than the inner diameter of the terminal section. In the insertion process, the diameter of the current collection section is reduced or the diameter of the terminal section is expanded so that the outer diameter of the current collection section is equal to or smaller than the inner diameter of the terminal section, and then the current collection section is inserted into the terminal section.

Abstract: A battery includes: a battery case having a case body member and a case lid member having a through hole; a rivet that engages with the through hole; and a gasket. The through hole is hermetically sealed with the gasket interposed between the circumferential outer surface of the case lid member and an outer flange of the rivet. The case lid member is configured such that, in a state wherein a peripheral edge portion connected to an opening end portion of the case body member, the circumferential outer surface is positioned in the axial outward direction such that the circumferential outer surface faces further towards the outer side along the axis line of the through hole than the peripheral edge portion and the opening end portion.

Abstract: A battery includes a winding electrode body, a battery case provided with a liquid inlet and positive and negative terminal members. The positive terminal member has a junction part compressed in a direction orthogonal to a winding axis direction. The negative terminal member has a junction part compressed in the direction orthogonal to the winding axis direction. The liquid inlet is positioned leaning to either the positive terminal junction part or the negative terminal junction part. In the winding electrode body, a separation distance from the junction part further away from the liquid inlet to the end lying on the relevant junction side in the winding axis direction is greater than a separation distance from the junction part closer to the liquid inlet to the end on the relevant junction side in the winding axis direction.

Abstract: A battery is provided with a lid member that closes a case, a collector terminal member having an insert-through part, an insulator that electrically insulates the lid member and the collector terminal member, and a gasket that provides a seal between the lid member and the collector terminal member. The lid member has a protrusion protruding downward in the vertical direction from the bottom. A gasket is in the same position as the protruding section in an inside-outside direction, which is perpendicular to the vertical direction, and has a sealing part pressed by the protruding section. At least one gap exists in the vicinity of the seal section in a different position to the seal section in the inside-outside direction, and at least portions of the gaps are enclosed by the gasket and the collector terminal member.

Abstract: A battery sealing member: has a power generating element, a case body member, a case lid member, and an electrode terminal member having an insert-through part inserted in a through-hole provided in the case lid member. The electrode terminal member is electrically connected to the power generating element. The battery sealing member is made of a synthetic resin and has a sealing part held between the electrode terminal member and the inner surface of the case lid member. The crystallinity of the sealing part of the sealing member is higher than the crystallinity of a portion other than the seal section.

Abstract: Provided are a laminated electrode-type battery having high joint strength and mechanical strength around a connecting portion between a positive-electrode current collector and a positive-electrode core member and around a connecting portion between a negative-electrode current collector and a negative-electrode core member, a manufacturing method therefor, a vehicle, and a device. The leading end of a positive-electrode core member and a positive-electrode current collector are joined by a connecting material. The melting point of the connecting material for positive-electrode is lower than that of the positive-electrode core member. Meanwhile, the leading end of a negative-electrode core member and a negative-electrode current collector are joined by a connecting material. The melting point of the connecting material for negative-electrode is lower than that of the negative-electrode core member.

Abstract: Provided is a technique for suppressing welding faults caused in sealing a case of a sealed battery by laser welding. A step for manufacturing a sealed battery having a case sealed by a sealing plug and a sealing plate, which includes a sealing step for fitting the sealing plug into a pouring hole formed in a recess of a lid portion and inserting the sealing plate into the recess, and a welding step for joining the sealing plate to the recess by laser welding. In the sealing step, a heat-insulating member is provided in a minute space defined by the recess, the sealing plug and the sealing plate so as to block at least a part of the boundary portion between the sealing plate and the recess. In the welding step, welding is completed at a position where the heat-insulating member is present in the boundary portion.

Abstract: A lithium secondary battery is equipped with a non-recovering safety valve comprising a valve, which ruptures when the valve opens, and a valve surrounding part that surrounds the valve. The safety valve is further disposed in the valve surrounding part, and has an anti-scattering means that prevents shards, which are produced by the valve rupturing when the valve opens, from scattering outside the battery. The anti-scattering means constitutes an anti-fragmentation part of a form that prevents shards from fragmenting from the valve surrounding part.

Abstract: A hermetically sealed battery is provided with a sealing member for air-tightly sealing the through-hole of a battery case from the outside. The sealing member has: a covering member secured to the battery case from the outside; an insertion portion inserted into the through-hole; an annular pressure contact portion in air-tight pressure contact with the hole surrounding portion of the battery case; and a connecting portion disposed between the insertion portion and the annular pressure contact portion so as to be integral with the insertion portion and the annular pressure contact portion. The connecting portion is provided with an annular groove surrounding the insertion portion.

Abstract: A battery includes a cylindrical shaft core, and a wound electrode formed by winding a first electrode plate, a second electrode plate, and a separator around the outer periphery of the core. The wound electrode has a first wound portion formed by winding a first active material uncoated portion of the first electrode plate, a second wound portion formed by winding a second active material uncoated portion of the second electrode plate, and a power generating portion positioned between the first and second wound portions and formed by winding the first and second electrode plates, and the separator. The shaft core has a current collector portion composed of a metal, which is comprised of a joint portion connected to the first or second wound portion. The portions of the first or second wound portion, which are positioned on the outside of the shaft core in the radial direction with respect to the joint portion, are overlapped and welded to the joint portion.

Abstract: A sealed battery includes a filling hole, and a gasket and a blind rivet that seal the filling hole. A tapered surface that is inclined toward an inside of a battery case is formed around the filling hole of the battery case. The filling hole is sealed by the gasket and the blind rivet by the blind rivet plastic deforming.

Abstract: A cylindrical battery is formed by sealing an electrode wound body in a cylindrical case and having an outer terminal member mounted to one end of the battery so as to axially penetrate through a gasket having a cylindrical portion and collar portions. A neck is formed at the inner surface of the case. A flange having an outer diameter greater than the inner diameter of the neck is formed on the outer terminal member. To mount the outer terminal member to the case, the gasket is mounted to the flange, liquid is charged from a through-hole with the flange held in a temporarily sealed state in which the flange is pressed into the case until being in contact with the neck, and an end portion of the case is bent to the inner surface side thereof to press the collar portion to the flange to complete sealing.

Abstract: Provided are a laminated electrode-type battery having high joint strength and mechanical strength around a connecting portion between a positive-electrode current collector and a positive-electrode core member and around a connecting portion between a negative-electrode current collector and a negative-electrode core member, a manufacturing method therefor, a vehicle, and a device. The leading end of a positive-electrode core member and a positive-electrode current collector are joined by a connecting material. The melting point of the connecting material for positive-electrode is lower than that of the positive-electrode core member. Meanwhile, the leading end of a negative-electrode core member and a negative-electrode current collector are joined by a connecting material. The melting point of the connecting material for negative-electrode is lower than that of the negative-electrode core member.

Abstract: A current collector electrically connected to a first electrode plate or a second electrode plate includes a tubular current collection section. An external terminal electrically connected to the current collector includes a tubular terminal section into which the current collection section is inserted. The current collection section has, before being inserted into the terminal section, a greater outer diameter than the inner diameter of the terminal section. In the insertion process, the diameter of the current collection section is reduced or the diameter of the terminal section is expanded so that the outer diameter of the current collection section is equal to or smaller than the inner diameter of the terminal section, and then the current collection section is inserted into the terminal section.

Abstract: A battery includes a cylindrical shaft core, and a wound electrode formed by winding a first electrode plate, a second electrode plate, and a separator around the outer periphery of the core. The wound electrode has a first wound portion formed by winding a first active material uncoated portion of the first electrode plate, a second wound portion formed by winding a second active material uncoated portion of the second electrode plate, and a power generating portion positioned between the first and second wound portions and formed by winding the first and second electrode plates, and the separator. The shaft core has a current collector portion composed of a metal, which is comprised of a joint portion connected to the first or second wound portion. The portions of the first or second wound portion, which are positioned on the outside of the shaft core in the radial direction with respect to the joint portion, are overlapped and welded to the joint portion.

Abstract: A secondary battery includes a cylindrical battery case, a positive and negative electrode body group, a top plate and a battery lid connected to first and second electrode bodies of the electrode body group respectively. The secondary battery further includes a current collector placed on an end of the electrode body group on the top plate side and connected to the first electrode body of the electrode body group and a spacer placed between the top plate and the current collector. The top plate is partly formed with a thin portion. The spacer is formed with through holes in positions corresponding to the thin portion. The portion of the current collector corresponding to the thin portion is in contact with the thin portion through the through hole. The thin portion is deformed when the internal pressure of the battery case rises, thereby breaking electric connection between the top plate and the current collector.

Abstract: A lithium secondary battery is equipped with a non-recovering safety valve comprising a valve, which ruptures when the valve opens, and a valve surrounding part that surrounds the valve. The safety valve is further disposed in the valve surrounding part, and has an anti-scattering means that prevents shards, which are produced by the valve rupturing when the valve opens, from scattering outside the battery. The anti-scattering means constitutes an anti-fragmentation part of a form that prevents shards from fragmenting from the valve surrounding part.

Abstract: A secondary battery includes a cylindrical battery case, a positive and negative electrode body group, a top plate and a battery lid connected to first and second electrode bodies of the electrode body group respectively. The secondary battery further includes a current collector placed on an end of the electrode body group on the top plate side and connected to the first electrode body of the electrode body group and a spacer placed between the top plate and the current collector. The top plate is partly formed with a thin portion. The spacer is formed with through holes in positions corresponding to the thin portion. The portion of the current collector corresponding to the thin portion is in contact with the thin portion through the through hole. The thin portion is deformed when the internal pressure of the battery case rises, thereby breaking electric connection between the top plate and the current collector.

Abstract: A circular cylindrical battery and a method of manufacturing the circular cylindrical battery, wherein air can be more smoothly released in liquid charging operation in a manufacturing process of the battery. A circular cylindrical battery is formed by sealing an electrode wound body in a cylindrical case and has an outer terminal member mounted to one end of the battery so as to axially penetrate through a gasket. A neck is formed at the inner surface of the cylindrical case. A flange having an outer diameter greater than the inner diameter of the neck is formed on the outer terminal member. The gasket has a cylindrical portion and collar portions.

Abstract: A plate core material is manufactured by a method including the processes of soaking a core material (11) that is made of nickel or nickel-plated steel and includes copper as an impurity in an aqueous solution (12) containing ammonium ions and hydrogen peroxide, so that the copper is dissolved in the aqueous solution (12), and removing the aqueous solution (12) from the surface of the core material (11). Further, an alkaline storage battery is manufactured by a method including this manufacturing method. According to the manufacturing method of the present invention, an alkaline storage battery having higher reliability than that of a conventional alkaline storage battery can be obtained.