Abstract: The backup power supply apparatus is an apparatus that supplies power to a power-supply target apparatus operating by power supply from an external power source when a power supply state of the external power source is emergency. The backup power supply apparatus includes: a power storage section; a series regulator that is located on a line connecting the power storage section and the power-supply target apparatus; and control circuitry that changes an output voltage of the series regulator in multiple stages in accordance with a change in the power supply state of the external power source and a change in a voltage of the power storage section.

Abstract: A sealing gasket used in a tubular battery includes a disc-shaped partition portion; an outer peripheral portion provided to stand from a peripheral edge of the partition portion and held between an open end of a metal battery can and a dish-shaped metal sealing plate; and a plurality of stress buffer portions formed of annular grooves formed concentrically in the partition portion, wherein the tubular battery includes the metal battery can having a bottomed tubular shape and has the open end subjected to inward diameter reduction, a power generation element housed in the battery can, the dish-shaped metal sealing plate fitted and attached to the open end subjected to the inward diameter reduction, and the sealing gasket made of resin and held between the open end and the sealing plate.

Abstract: A battery includes a cathode that is containing manganese dioxide and graphite, an anode that is containing zinc, an electrolyte in which the cathode and the anode are immersed, and a polyethyleneimine ethoxylate that is contained in the anode or in the electrolyte.

Abstract: An alkaline battery and a method of producing an alkaline battery that includes a negative electrode gel in which a negative electrode active material made of a zinc alloy and a binder are dispersed in an alkaline aqueous solution. Ultrafine microfibrils form the binder.

Abstract: An axial lead extending on a principal surface of a flat tab includes a main body part having a diameter and a connection part. The connection part includes a first part located adjacent to the main body part and a second part located from the first part and the end part. The first part includes a weld part welded to the flat tab and has a first thickness less than the diameter. The second part includes a non-weld part not welded to the flat tab and has a second thickness equal to or less than the first thickness. The second part is formed by pressing the end part of the axial lead, the end part having been raised when resistance welding is performed on the axial lead and the flat tab.

Abstract: An electrode has a band-shaped core and an electrode mixture layer carried by the core to form a spiral electrode assembly with a gas generating electrode and a separator for an alkaline secondary battery. The electrode in the spiral shape has a first circumference portion, an intermediate portion, and an outermost circumference portion. The first circumference portion is a starting portion for winding into the spiral shape. The intermediate portion is a second and following circumferences of the spiral shape. The outermost circumference portion has an inner surface only which faces the gas generating electrode. The electrode mixture layer includes a reactant that develops a reaction consuming gas generated from the gas generating electrode. An amount of the reactant in the first circumference portion is more than those in the intermediate portion and/or the outermost circumference portion.

Abstract: An all-solid-state battery includes an electrode body in which a cathode layer that contains a cathode active material and a solid electrolyte, an electrolyte layer that is formed of the solid electrolyte, and an anode layer that contains an anode active material and the solid electrolyte are stacked in this order in an up-down direction, in which the cathode active material is a compound represented by a chemical formula Li2Fe(1-x)MxP(2-y)AyO7, contains at least one metal of Ti, V, Cr, Ni, and Co as the M in the chemical formula, and contains at least one element of B, C, Al, Si, Ga, and Ge as the A in the chemical formula, the x in the chemical formula satisfies 0.8<x?1, the y in the chemical formula satisfies 0?y?0.07, and the anode active material is an anatase titanium oxide represented by a chemical formula TiO2.

Abstract: A battery indicator estimates a remaining battery capacity when a controller instructs a driving power source to start the power supply based on a battery voltage detected at a timing when the controller instructs the driving power source to start the power supply. The controller instructs the driving power source to stop the power supply after the discharge of a secondary battery by a charge-discharge circuit is ended and at a timing when a battery voltage being measured by a voltage measurer is stabilized.

Abstract: A sealing body and a cylindrical storage battery are provided. The sealing body includes: a first cover plate fixed to the battery; a second cover plate forming a housing space between itself and first cover plate; and an elastic valving element disposed inside housing space and compressed between the first and second cover plate. The first cover plate includes an annular, hollow disk-shaped base portion around an axis line, an annular first sidewall portion extending downward from an inner peripheral edge portion of the base portion, and a bottom wall portion connected to the first sidewall portion. The first sidewall portion has a first through-hole passing through the first sidewall portion in a direction approaching axis line. The second cover plate has a communicating hole communicating housing space and an external space. The valving element is disposed between the first through-hole and the communicating hole in direction of fluid flow.

Abstract: A solid-state battery includes a multi-layer body, a silica-based glass material, and buffer layers. The multi-layer body includes a positive electrode layer and negative electrode layers, all of which are electrode layers, and includes solid electrolyte layers. The electrode layers and the solid electrolyte layer are alternately stacked, and for example, two of the negative electrode layers are located as the outermost layers. The silica-based glass material covers the multi-layer body. The buffer layers have an insulating property, and are formed between the outermost negative electrode layers of the multi-layer body and the silica-based glass material.

Abstract: A battery 2 includes an outer can 10 and an electrode group 22 that is housed in the outer can 10 together with an alkaline electrolytic solution, in which a positive electrode 24 included in the electrode group 22 includes a positive electrode substrate and a positive electrode mixture supported on the positive electrode substrate, the positive electrode mixture includes nickel hydroxide, yttrium oxide serving as a first additive, and niobium oxide or titanium oxide serving as a second additive, a total amount of the first additive and the second additive is 0.1 parts by mass or more and 2.5 parts by mass or less per 100 parts by mass of the nickel hydroxide, a mass ratio of the first additive and the second additive is in a relationship of 1:0.2 to 5, and the positive electrode mixture after an activation treatment has a resistivity of 1 ?·m or more and 10 ?·m or less.

Abstract: A battery 2 includes an outer can 10 and an electrode group 22 that is housed in the outer can 10 together with an alkaline electrolytic solution, in which a positive electrode 24 included in the electrode group 22 includes a positive electrode substrate and a positive electrode mixture supported on the positive electrode substrate, the positive electrode mixture includes nickel hydroxide and a positive electrode additive, the positive electrode additive includes a titanium oxide particle having an anatase-type crystal structure, the titanium oxide particle has an average primary particle size of 5 nm or more and 10 nm or less and a BET specific surface area of 230 m2/g or more and 360 m2/g or less, and includes 0.1% by mass or more of niobium, and a rate of addition of the titanium oxide relative to the nickel hydroxide is 0.1% by mass or more and 1.0% by mass or less.

Abstract: A backup power supply device having a short charging time is provided. The backup power supply device for supplying power when a main power supply is under a power failure includes first and second battery packs connected in parallel, a charging circuit for charging the first and second battery packs, first and second discharging switches for causing the first and second battery packs to discharge to the load device respectively, and a control unit. The control unit compares the battery voltages of the first and second battery packs with an output voltage from the main power supply. The control unit sets the first and second discharging switches to ON when the battery voltages are lower than the output voltage. When the battery voltage of the battery pack exceeds the output voltage of the main power supply due to charging, the control unit sets the first discharging switch and the second discharging switch to OFF.

Abstract: A backup power supply device to be connected to a conduction path from an external power supply to an external load includes a plurality of secondary batteries connected in parallel, a plurality of charging switches that can individually pass and cut off charging power from the conduction path to the plurality of secondary batteries, and a control device for performing discharging control on the plurality of secondary batteries when the power supply voltage of the conduction path drops below a predetermined power failure detection threshold value. When battery voltages of the plurality of secondary batteries drop below a predetermined charging start threshold value, the control device performs charging control with a time difference set between charging start timings of the secondary batteries.

Abstract: A battery packaging container includes: a plate-shaped bottom wall; a first lateral wall formed integrally with the bottom wall; a second lateral wall formed integrally with the bottom wall; a partition wall formed integrally with the first lateral wall and extending diagonally from an upper end of the first lateral wall toward the second edge of the bottom wall; and a lid formed integrally with the second lateral wall and extending from an upper end of the second lateral wall to cover the partition wall from above. The partition wall includes a storage hole to store a battery, the storage hole being defined by an end portion of the partition wall, a root portion located on an opposite side of the end portion, and a pair of lateral portions connecting the end portion and the root portion.

Abstract: A battery polarity determination circuit includes a battery accommodating unit including a first contact and a second contact to be in contact with respective electrode terminals of a battery, a control device that is connected via a resistor to a voltage lead-out point at which a voltage of the battery is led out and determines a polarity of the battery, a connection switching circuit capable of switching between a first connection state and a second connection state, and a diode having a cathode to be connected to a voltage read-in point at which the resistor and the control device are connected to each other, and an anode to be grounded, wherein the control device determines the polarity of the battery based on a voltage at the voltage read-in point according to the connection state of the connection switching circuit, and a forward voltage of the diode is set so that the voltage at the voltage read-in point is not less than a lower limit value of an absolute maximum rating of the control device.

Abstract: A charging device includes a rectifier circuit which rectifies AC power output by an AC power supply, a DC-DC converter which converts a voltage of DC power output by the rectifier circuit, a charging circuit which includes a positive electrode contact point in contact with a positive electrode terminal of a mounted secondary battery and a first negative electrode contact point and a second negative electrode contact point in contact with a negative electrode terminal of the secondary battery, an output voltage from the DC-DC converter being applied between the positive electrode contact point and the first negative electrode contact point, and a control circuit which includes a photocoupler that is turned on by a difference in potential between the positive electrode contact point and the second negative electrode contact point and outputs an enable signal for the DC-DC converter when the photocoupler is on.

Abstract: An alkaline battery includes a bottomed tubular battery can made of metal, serving as a positive electrode current collector; a positive electrode mixture sealed in the battery can and formed in a cylindrical shape, the positive electrode mixture containing manganese dioxide as a positive electrode active material and containing a binder including fluorine resin such that a ratio of the binder to the positive electrode active material is 0.2 wt % or more and 0.8 wt % or less; a bottomed tubular separator sealed in the battery can and arranged on an inner peripheral side of the positive electrode mixture; a gel-form negative electrode mixture sealed in the battery can, arranged inside the separator, containing zinc powder as a negative electrode active material; and an electrolyte that includes an alkaline aqueous solution, sealed in the battery can.