Abstract: A nano projection structure inspection apparatus herein disclosed includes an inspection light irradiation part and a chromameter. The inspection light irradiation part irradiates inspection light to an inspected surface being a surface of a metal. An imaging optical axis of an imaging element of the chromameter is arranged to be tilted to a regular reflection direction of the inspection light caused by the inspected surface. The chromameter makes the imaging element receive diffusion reflection light, among reflection light of the inspection light from the inspected surface, the reflection light containing regular reflection light and the diffusion reflection light, so as to inspect a nanoscale projection structure on the inspected surface.

Abstract: A nano projection structure inspection apparatus herein disclosed includes an inspection light irradiation part and a chromameter. The inspection light irradiation part irradiates inspection light to an inspected surface being a surface of a metal. An imaging optical axis of an imaging element of the chromameter is arranged to be tilted to a regular reflection direction of the inspection light caused by the inspected surface. The chromameter makes the imaging element receive diffusion reflection light, among reflection light of the inspection light from the inspected surface, the reflection light containing regular reflection light and the diffusion reflection light, so as to inspect a nanoscale projection structure on the inspected surface.

Abstract: A lid body includes a terminal member of at least one of a positive electrode and a negative electrode, a sealing plate including an attachment hole for attaching the terminal member, and a sealing material containing a thermoplastic resin and an inorganic filler. The terminal member is inserted into the attachment hole and attached to the sealing plate in a state in which the sealing material is joined to a peripheral portion of the attachment hole. Here, as the inorganic filler, an inorganic substance having a volume change rate of 20% or less after being immersed for 7 days in a test electrolyte, which is prepared at 65° C., and which contains 1200 ppm of water and 1 M of LiPF6, and moreover in which a volume ratio of a solvent thereof satisfies a relationship of ethylene carbonate:diethyl carbonate:dimethyl carbonate=1:1:1, is used.

Abstract: A lid body including: a terminal member of at least one electrode; a sealing plate having a mounting hole for attaching the terminal member; and a sealing material containing an inorganic filler. The terminal member is inserted into the mounting hole and is attached to the sealing plate in a state where the sealing material is joined to a peripheral edge portion of the mounting hole. In a microscope observation of a cross section of the sealing material, an average aspect ratio of the inorganic filler is 2 or higher, and with an average orientation angle of the inorganic filler is 30 degrees or smaller, in at least the sealing material formed on an outer surface of the sealing plate.

Abstract: Provided is a lid body including: a terminal member being mainly made up of a first metal; a sealing plate mainly made up of a second metal; and a sealing material. The sealing plate has a mounting hole for attaching the terminal member. The terminal member is inserted into the mounting hole and is attached to the sealing plate in a state where the sealing material is joined to a peripheral edge portion of the mounting hole. With as ?S a coefficient of linear expansion at 25° C. of the sealing material, ?1 as a coefficient of linear expansion at 25° C. of the first metal and ?2 as a coefficient of linear expansion at 25° C. of the second metal, ?L??S??H is satisfied, where ?H is the higher value and ?L is the lower value from among the ?1 and ?2.

Abstract: A method of welding laminated metal foils (LMF) by projecting a laser beam onto LMF sandwiched between an upper metal plate and a lower metal plate from a side of the upper metal plate and laser-welding the LMF to the upper metal plate and the lower metal plate. The method includes: forming a hole in an upper surface of the upper metal plate and forming a chamfered part so that a diameter of the hole expands toward the upper surface before the laser welding; and in the laser welding, projecting the laser beam for heat conduction welding onto the chamfered part of the upper metal plate to form a molten pool; and projecting the laser beam in a circle to agitate the molten pool and grow the molten pool in a laminating direction of the LMF so that the molten pool reaches the lower metal plate.

Abstract: A laser welding method and a laser welding apparatus capable of preventing formation of blowholes and obtaining an excellent welled state are provided. An embodiment is a laser welding method for a component to be welded 40 including a third metal component 40c sandwiched between first and second metal components 40a and 40b, in which the metal components are welded to each other by scanning a laser beam in a first direction perpendicular to a direction in which the third metal component 40c is sandwiched, in which a welded part 42 is formed by applying a first laser beam 12a while scanning it in the first direction and thereby melting and then solidifying the component to be welded 40.

Abstract: Provided is a method of welding laminated metal foils that can prevent blowholes and spatter from being formed. It is a method of welding laminated metal foils sandwiched between a pair of metal plates to the pair of metal plates. The method of welding laminated metal foils sandwiched between a pair of metal plates to the pair of metal plates includes locally pressing and crimping the laminated metal foils sandwiched between the pair of metal plates at a welding point in a laminating direction, and welding the crimped pair of metal plates and laminated metal foils at the welding point.

Abstract: Provided is a method of welding laminated metal foils that can prevent blowholes and spatter from being formed. It is a method of welding laminated metal foils sandwiched between a pair of metal plates to the pair of metal plates. The method of welding laminated metal foils sandwiched between a pair of metal plates to the pair of metal plates includes locally pressing and crimping the laminated metal foils sandwiched between the pair of metal plates at a welding point in a laminating direction, and welding the crimped pair of metal plates and laminated metal foils at the welding point.

Abstract: A laser welding method and a laser welding apparatus capable of preventing formation of blowholes and obtaining an excellent welled state are provided. An embodiment is a laser welding method for a component to be welded 40 including a third metal component 40c sandwiched between first and second metal components 40a and 40b, in which the metal components are welded to each other by scanning a laser beam in a first direction perpendicular to a direction in which the third metal component 40c is sandwiched, in which a welded part 42 is formed by applying a first laser beam 12a while scanning it in the first direction and thereby melting and then solidifying the component to be welded 40.

Abstract: A method of welding laminated metal foils (LMF) by projecting a laser beam onto LMF sandwiched between an upper metal plate and a lower metal plate from a side of the upper metal plate and laser-welding the LMF to the upper metal plate and the lower metal plate. The method includes: forming a hole in an upper surface of the upper metal plate and forming a chamfered part so that a diameter of the hole expands toward the upper surface before the laser welding; and in the laser welding, projecting the laser beam for heat conduction welding onto the chamfered part of the upper metal plate to form a molten pool; and projecting the laser beam in a circle to agitate the molten pool and grow the molten pool in a laminating direction of the LMF so that the molten pool reaches the lower metal plate.