Abstract: A method where two disk cutter rolls are used to form slits in a staggered pattern in a metal sheet; disk cutters are part of the disk cutter rolls; ridges are arranged in a peripheral edge of the disk cutters; and valleys are arranged between the ridges, where an axis-to-axis distance L (mm) of the rolls satisfies a relationship of 2r?0.3?L<2r when a radius of a reference circumferential face made with the valleys is r (mm). The method can include a carrying procedure for passing the sheet between the rolls, then carrying the sheet along a peripheral face of one of the rolls, and then pulling out the sheet from the peripheral face.

Abstract: It is an object of the present invention to provide an electrochemical device adopting lithium titanate as an active material and having a sufficient output characteristic. It is another object of the present invention to provide a production method of an electrode material, an electrode, and a production method of the electrode material, to be used for the device. There can be obtained an electrochemical device-oriented electrode material, containing 90% or more of lithium titanate, and having a bulk density of 1.5 g/cm3 or more and a volume resistivity of 16 ?·cm or less, by mixing the lithium titanate with an organic substance followed by heat treatment. Usage thereof allows for achievement of the objects.

Abstract: A membrane element in which, after membrane breakage or deterioration, the filtration plate made of a thermoplastic resin can be reused to replace the membrane with a fresh one. The membrane element comprises a filtration plate made of a thermoplastic resin and, bonded to a peripheral smooth surface thereof, a microporous filter membrane which has fine pores formed therein and employs a nonwoven fabric comprising synthetic resin fibers as a support. A hot plate having a shape corresponding to the peripheral shape of the resinous filtration plate is brought into contact with a peripheral smooth surface of the plate so as to form a recessed part in the surface. The temperature of the hot plate is regulated so as to be not higher than the melting point of the nonwoven fabric serving as the support and not lower than the Vicat softening temperature of the filtration plate made of a thermoplastic resin.

Abstract: The present invention provides a power unit for conveyance, having a main power source and a standby power source. The power unit has a thermal battery provided as the standby power source. The conveyance is provided with an electronic control system and the power unit for conveyance of the present invention, and electric power for operating the electronic control system is supplied to the electronic control system from the power unit for conveyances. By employing such a thermal battery as the standby power source, the standby power source does not require to be charged, thereby ensuring a long-term reliability of the standby power source.

Abstract: To improve the penetration short-circuit resistance of a valve-regulated lead-acid battery. A mixed and scooped mat of glass fibers and organic fibers is used as a separator 3 of a battery comprising an electrode plate pack 4 obtained by inserting the separator 3 between a positive electrode plate 2 and a negative electrode plate 1 and housed in a container 5 and an electrolyte retained in the electrode plate pack 4 and the separator 3, wherein the separator is a mixed and scooped mat of glass fibers and organic fibers and the electrolyte is silica sol mixed with silica and silica sol is injected as the electrolyte.

Abstract: A standalone hydrogen generating system is provided using a hydrogen generating device which can generate a hydrogen-containing gas at a low temperature and can be operated only by electric energy supplied from a fuel cell and does not require large electric energy.

Abstract: An object of the invention is to provide a sealed battery having a low resistance, excellent in the output power, and provided with a current collecting structure by setting welding points of a lower current collecting plate and a container bottom surface at specified positions without requiring a current collecting substrate with a special structure or a complicated welding method.

Abstract: A grid for a battery plate is made by forming a metal sheet is formed into a grid-like shape. Rupture due to torsion or stress concentration does not occur in a basal portion of a wire which is drawn out from a node of the grid, thereby preventing corrosion due to electrolyte from advancing so as not to cause a crack of corrosion in an early stage. The invention provides also a battery using the grid for a battery plate, a method of producing the grid for a battery plate, and a battery using it.

Abstract: A positive active material for lithium secondary batteries, includes a composite oxide including an oxide which is represented by the composite formula LixMnaNibCocO2 and has an ?-NaFeO2 structure, and an impurity phase including Li2MnO3. The values a, b, and c are within such a range that in a ternary phase diagram showing the relationship among these, (a, b, c) is present on the perimeter of or inside the quadrilateral ABCD defined by point A (0.5, 0.5, 0), point B (0.55, 0.45, 0), point C (0.55, 0.15, 0.30), and point D (0.15, 0.15, 0.7) as vertexes, and 0.95<x/(a+b+c)<1.35.

Abstract: A hydrogen supply system is provided which can supply hydrogen easily to a hydrogen storing means, can generate a gas containing hydrogen at a low temperature and uses a hydrogen generating device which does not require a large quantity of electric energy.

Abstract: There is provided a storage battery for supplying power to an engine starting circuit and plural electrical parts and accessories, which is structured to prevent all the cords for various circuits and the like from being jammed to a single pair of terminals of the storage battery and prevent power loss during the operation, as well as provide an excellent appearance. The storage battery of the present invention includes a container for accommodation of a plate pack, a lid for covering an opening of the container, main positive and negative terminals connected to the plate pack, and at least one auxiliary terminal connected to at least one of the main positive and negative terminals via a connection member, in which at least a portion of the connection member is embedded in the inside of the lid or located in a recess on the top of the lid.

Abstract: A nonaqueous secondary electrolytic battery comprising an electricity-generating element formed by spirally winding a laminate of a positive electrode plate, a separating material and a negative electrode plate, and an electrolytic solution with which the separating material, if it is a separator, is impregnated. The electricity-generating element is sealed in a battery case formed by a resin-laminated sheet comprising a metal layer as a barrier layer. Only a pair of lead terminals are drawn to the exterior of the battery case. The resin sheet comprises an oriented resin layer laminated on both surfaces of the metal layer. The inner heat-fused layers are opposed and heat-fused to each other. A molten and solidified resin mass is formed protruding from the inner end of the welded portion toward the inner space of the battery by 0.1 mm or more. Alternatively, the welded portion is formed thinner at the outer end thereof than at the inner end thereof.

Abstract: The object of the invention is to provide a sealed battery having a low resistance and is excellent in output power performance, and a lead suitable for the sealed battery, and a battery stack comprising a plurality of such sealed batteries as described above, Provided is a sealed battery comprising a lid (50) for closing the open end of a container (60) which has, at the center of its upper surface, a valve body (90) covered with a cap (80) to form a safety valve, and an upper current collecting plate (2) connected via lead (20, 30) to the inner surface of lid (50), wherein a welding point of lead (20) to the inner surface of lid (50) is, in a flat view, outside the periphery of cap (80), and the length of lead (20, 30) from the welding point (20) on the inner surface of lid (50) to the nearest welding point (30) on the upper current collecting plate (2) is 1 to 2.

Abstract: A fuel cell includes plural gas flow channels, a switching device, and a variable gas flow channel with the function of switching the connection between one gas flow channel and another gas flow channel from series to parallel or from parallel to series.

Abstract: The present invention is a method for balancing voltages of a serially connected plurality of cells in a battery pack provided with the plurality of cells. In this method, the voltages are balanced by: connecting a pair of a resistor and a switch, which are serially connected with each other, in a parallel relationship to one of the plurality of cells; switching the switch from an open state to a closed state when a voltage of the one cell increases to a prescribed balance operation starting voltage; and maintaining a state where the cell is charged by a voltage of the same magnitude as a voltage that is applied to both ends of the pair after switching of the switch to the closed state.

Abstract: The object of the present invention is to provide a nickel metal-hydride battery excellent in cycle performance, high-rate discharging ability, and output power performance, by utilizing a hydrogen absorbing electrode comprising a hydrogen absorbing alloy powder as an active material, which is excellent in resistance to corrosion and high-rate discharging performance. Provided are a hydrogen absorbing electrode comprising 100 parts by weight of a hydrogen absorbing alloy powder which contains, as a main component, a rare earth element and a transition metal element, and has a saturation mass susceptibility of 1.0 to 6.5 emu/g, and 0.3 to 1.

Abstract: A submarine boat is provided on which a hydrogen generating device which can supply hydrogen easily to a hydrogen storing means and can generate a hydrogen-containing gas at a low temperature is loaded.