Abstract: A battery body, which is composed of a laminated body obtained by laminating a cathode and an anode via a separator or a wound body obtained by winding them in a laminated structure and a plurality of leads connected to the cathode and the anode, is contained in a flexible package, and after an electrolyte solution is injected thereinto, an opening of the package is sealed at pressure which is lower than atmospheric pressure and is reduced to not less than vapor pressure of the electrolyte solution so that a thin battery is fabricated. A rise in pressure in the battery due to generation of gas in the battery and volume expansion of the gas can be restrained when the battery is maintained at high temperature.

Abstract: A battery package including laminate sheets adhered each other along their peripheral to form a container portion for receiving an electrode assembly and a seal portion. The seal portion surrounds the container portion and protrudes outwardly from side faces of the container portion. The seal portion has enough width to maintain the container portion free from moisture for long periods of time. The laminate sheets include a heat-adhesive polymer layer and a metal layer which stops moisture and provides a shape-maintaining ability to the laminar sheets. The seal portion is folded or curled to reduce a projection area of the battery package.

Abstract: A lead acid battery has a positive plate containing antimony, a negative plate; and a separator containing an organic compound capable of capturing metal ions. The organic compound is preferably lignin.

Abstract: In a nonaqueous electrolyte battery, an ion-conductive polymer particles provided to be between a positive electrode and a negative electrode. The positive electrode and the negative electrode are insulated from each other by the polymer particles.

Abstract: In a nonaqueous-electrolyte battery, a positive active material contains oxyhydroxide of nickel and aluminum. The positive active material may further contain oxyhydroxide of cobalt.

Abstract: The use of the Pb—Sn alloy containing Ag and Se of the present invention as a connecting part for connecting internal components makes it possible to improve the resistance of straps, poles and cell connectors to general corrosion and grain boundary corrosion, inhibit the occurrence of the stress corrosion cracking and enhance the alloy strength, thus providing a lead acid battery having an excellent reliability.

Abstract: The present invention provides a non-aqueous electrolyte secondary battery comprising a positive electrode, a negative electrode comprising a carbonaceous material, an organic electrolyte comprising a lithium salt and a solvent, and a separator. The solvent comprises ethylene carbonate (EC), propylene carbonate (PC), a chain carbonate and phenylethylene carbonate, the content of the chain carbonate, ethylene carbonate (EC) and the propylene carbonate (PC) are from 50 to 90 vol %, from 5 to 45 vol % and from 5 to 45 vol %, respectively, based on the total volume of the ethylene carbonate (EC), the propylene carbonate and the chain carbonate, and the content of the phenylethylene carbonate is from 0.1 to 5.0 wt % based on the total weight of the electrolyte. The non-aqueous electrolyte secondary battery according to the invention exhibits a great discharge capacity, an excellent cycle life performance and an excellent low-temperature discharge performance.

Abstract: An electrolyte injecting metallic plug laser-welded to an outer edge of an electrolyte injecting port on a periphery of a battery case. At least a part of the electrolyte injecting metallic plug is inserted into the electrolyte injecting port.

Abstract: A cell is provided in which a flat plate portion of a collector portion is prevented from making contact with a positive or negative electrode in a power generating element to cause a short circuit, the application area of a material can be widened, and edge portions of an electrode plate can be surely connected and fixed to a collector. In a collector portion of a negative or positive collector, press holds of a gap (groove) which opens on the side of a basal portion are formed by bending back a substantially vertical metal plate at an apex. The portion between adjacent press holds of the collector portion is formed into a flat plate-like shape. A window is formed in each of the press holds, or a reduced thick portion is formed in a part of each of the press holds.

Abstract: A cell has a winding type power generating element, a cell case for housing the winding type power generating element therein and a safety valve formed at the lower end of the side wall of the cell.

Abstract: A positive active material for the non-aqueous electrolyte secondary battery comprising a lithium-nickel composite oxide represented by the compositional formula LiaNi1-b-cCObMnCO2 (a≦1.09, 0.05≦b≦0.35, 0.15≦c≦0.35, and 0.25≦b+c≦0.55). BY the X-ray diffractometry with the CuK&agr; ray, the lithium-nickel composite oxide exhibits an intensity ratio R ((I012+I006)/I101) of not greater 0.50, wherein R is the ratio of the sum of the diffraction peak intensity I012 on the 012 plane and the diffraction peak intensity I006 on the 006 plane to the diffraction peak intensity I101 on the 101 plane. The crystallinity of the positive active material of the compositional formula LiaNi1-b-cCobMnCO2 can be kept high and it is possible to secure the good capacity density and cycle life performance.

Abstract: A positive active material for non-aqueous electrolyte secondary battery is provided comprising lithium manganese oxide having such a spinel structure that the half-width (2&thgr;) of the reflection peak corresponding to 440 plane as determined by X-ray diffractometry using CuK&agr; ray is not greater than 0.145°. The use of this positive active material makes it possible to obtain a secondary battery which exhibits a good cycle life performance at room temperature and high temperatures and a reduced capacity drop when stored at high temperatures.

Abstract: The present invention is a method by which the deterioration judgement and the correction of an electrochemical carbon monoxide gas sensor are simply carried out without using the correction gas. The method of the present invention is that: the voltage is applied from the outside so that the working electrode of the electrochemical carbon monoxide gas sensor is operated as the negative electrode, and the counter electrode is operated as the positive electrode, and hydrogen is generated from the working electrode, and oxygen is generated from the counter electrode; after that, the potential of the working electrode and the counter electrode is returned to the operation potential as the sensor; and by using the reaction on the hydrogen remained in the vicinity of the working electrode, the sensor current is generated, thereby, it is tested whether the sensor is normally operated.

Abstract: A lead is connected to the electrode plate of the power generating element, and exposed externally from the deposited portion of a battery case. The portion of the lead crossing film edges is covered with two flat insulating covering resins which are thermally deposited to each other. At this portion, the covering resins and film edges are thermally deposited to each other. The covering resin is composed of two layers of an outer layer and an inner layer. At least the outer layer is colored and crosslink-coupled by irradiation of electron beams. The outer layer has a higher softening point than the inner layer.

Abstract: A battery comprising an electricity-generating element comprising a strip-form positive electrode, a strip-form negative electrode, and a strip-form separator, said positive electrode and said negative electrode being spirally wound through said separator and said positive electrode and said negative electrode respectively having current collecting lugs protruding from a side thereof, wherein the pitches of the current collecting lugs become longer toward the outer periphery side, and the at least one current collecting lug that located on the outer side has a larger width than that located on the inner side. In this battery, the electricity-generating element has at least one current collecting lug which has a larger width than the adjacent current collecting lug located on the inner side thereof.

Abstract: A gas diffusion electrode has a catalyst layer and a gas diffusion layer. The catalyst layer has a porous electrolyte A with pores which three-dimensionally communicate with one another. A micro-porous catalyst-electrolyte aggregate including a catalyst and an electrolyte B is provided in said pores.

Abstract: A lead-acid battery electrode plate is manufactured by consecutively supplying a lead or lead alloy sheet; leaving a part in the vicinity of the center of the sheet as a non-expansion portion and expanding both sides like mesh to form a grid body; filling active material paste into the grid body; and cutting the grid body to predetermined dimensions. In the lead-acid battery electrode plate, the non-expansion portion forms a current collector part of the electrode plate along an expansion portion in an up and down direction of the electrode plate. One or more openings are made in a part of the non-expansion portion. A part of the non-expansion portion is projected above the position of an upper margin of the cut expansion portion as a current collector lug part. When the current collector lug part is placed upside, the expansion direction is the width direction of the electrode plate.

Abstract: A method for producing a grid for a lead storage battery has a first step, a second step and a cooling step performed between the first and second step. In the first step, lead alloy is sequentially rolled over a plurality of rolls. In the second step, the rolled sheet obtained at the first step is machined to produce a grid for a lead storage battery. In the cooling step, the rolled sheet is cooled so that (1) the surface temperature thereof is 10° C. or lower at least once and (2) the total time during which the rolled sheet is exposed to an atmosphere of higher than 10° C. is 10 hours or less.

Abstract: An active material of formula LiCu1+xPO4(0≦x≦1) which could be used as cathode material in lithium primary and secondary batteries.

Abstract: The sealed type lead acid battery according to the invention comprises a battery case having an upper wall provided with an inner surface and an outer surface (pierced with holes) in which an electrolytic solution and electrodes are received, an annular protrusion provided on the inner surface of the upper wall surrounding the holes, a pole connected to the electrodes and disposed beneath the holes, a male thread member having one end embedded in the pole and the other end protruding from the pole to extend from the interior of the battery case to the exterior of the battery case through the hole, and a female thread member engaged with the male thread at the portion thereof protruding from the upper wall. In this arrangement, the female thread member is tightened so that the annular protrusion bites into the upper surface of the pole.