Abstract: A nonaqueous electrolyte secondary battery has a positive electrode containing a lithium complex oxide, a negative electrode which adsorbs/desorbs lithium, and an electrolyte, and not less than 0.1% by mass and not more than 2% by mass of one or more kinds of compounds selected from LiFOB and LiBOB, or not less than 0.01% by mass and not more than 2% by mass of LiBF4, and not less than 0.1% by mass and not more than 4% by mass of a aromatic compound, respectively relative to the total mass of the electrolyte, are added to the electrolyte in order to suppress decrease in the charge/discharge cycle life property and swelling of a battery when left in high temperature environments.

Abstract: A case is made by disposing side plate portions on the long side and a side plate portion on one short side on the circumference of a plate portion. Provided on the other short side of the case in two tiers are a side plate portion and a substrate casing portion which has a height lower than the side plate portion. The substrate casing portion has a lower plate portion, side plate portions and an upper plate portion. The lower plate portion is provided with window portions from which the respective output terminals are exposed. The battery assembly is held in the case by fitting the protection circuit substrate which is laid down on a side face, into the substrate casing portion.

Abstract: A battery assembly of a battery pack has a structure in which a substrate holder abuts on a side surface of a cell with a protecting circuit being held. The substrate holder includes a first side plate having a circuit part fitted part in which a circuit element of the protecting circuit is fitted and a second side plate along which a first lead is situated. Above the first side plate, a brim is provided that protrudes by an amount substantially equal to the sum of the thicknesses of the substrate and the circuit element, that is, the thickness of the protecting circuit substrate. Above the second side plate, a brim is provided that protrudes by an amount greater than the thickness of the first lead.

Abstract: At a central portion of a lid of a battery, a negative terminal, which has a T-shaped section view, is provided so as to be surrounded by a gasket and pierce the lid. An insulator is provided at the inner face side of the lid. A plate-like current collector is placed in a recess of the insulator. Notches are provided at two positions of an insertion hole which is provided at one end portion side of the current collector. By inserting the negative terminal into the insertion hole and crimping an end portion of a leg portion of the negative terminal, the negative terminal is fixed to the current collector with a deforming part of the end portion eating into the notches and being locked.

Abstract: A battery assembly of a battery pack has a structure in which a substrate holder abuts on a side surface of a cell with a protecting circuit being held. The substrate holder includes a first side plate having a circuit part fitted part in which a circuit element of the protecting circuit is fitted and a second side plate along which a first lead is situated. Above the first side plate, a brim is provided that protrudes by an amount substantially equal to the sum of the thicknesses of the substrate and the circuit element, that is, the thickness of the protecting circuit substrate. Above the second side plate, a brim is provided that protrudes by an amount greater than the thickness of the first lead.

Abstract: A case is made by disposing side plate portions on the long side and a side plate portion on one short side on the circumference of a plate portion. Provided on the other short side of the case in two tiers are a side plate portion and a substrate casing portion which has a height lower than the side plate portion. The substrate casing portion has a lower plate portion, side plate portions and an upper plate portion. The lower plate portion is provided with window portions from which the respective output terminals are exposed. The battery assembly is held in the case by fitting the protection circuit substrate which is laid down on a side face, into the substrate casing portion.

Abstract: A nonaqueous electrolyte battery wherein a power generating element formed by spirally winding a positive electrode plate and a negative electrode plate with a separator insulated therebetween, is accommodated in a case. Insulating tapes are adhered to end faces of the power generating element and to portions of side faces of the power generating element in the vicinities of the end faces along the winding direction of the positive electrode plate and the negative electrode plate. With this configuration, the insulating tapes are not deformed at the time when the power generating element is inserted into the case. Hence, it is possible to securely prevent a short circuit between the end faces of the power generating element and the inner faces of the case, and the permeability of the electrolytic solution is improved.

Abstract: In a non-aqueous electrolyte battery including a generating element having a separator bonded with an adhesive layer between a positive electrode plate and a negative electrode plate, the adhesive layer contains a fluorine-based polymer having a mass average molecular weight of from 500,000 to 1,500,000 and a melting point of from 165° C. to 175° C., and an inorganic-solid filler. The fluorine-based polymer is a polyvinylidene fluoride-based polymer such as a polyvinylidene fluoride homopolymer.

Abstract: In the non-aqueous electrolyte battery comprising a positive electrode, a negative electrode and a polymer electrolyte layer, the theoretical capacity per unit area of the opposed positive electrode and negative electrode was set to larger than or equal to 3.00 mAh/cm2 and smaller than or equal to 3.20 mAh/cm2, the polymer electrolyte layer was formed as a porous layer including inorganic solid filler and the theoretical battery capacity was set to larger than or equal to 800 mAh and smaller than or equal to 4 Ah.

Abstract: To provide a high reliability, low cost battery capable of starting discharging or bypassing a charging current in case of overcharge and preventing the battery from becoming unusable. In a battery having a negative terminal attached to a conductive cover plate with an insulator between them, an N-channel field effect transistor is connected between the negative terminal and the cover plate, a source electrode of the N-channel field effect transistor is connected between the negative terminal and the insulator, and a common electrode (drain electrode and gate electrode) is connected to the cover plate.

Abstract: A single-legged chair comprising a support post and a seat mounted on the support post at a predetermined position thereof so as to constitute a leg portion by a lower part of the support post below the seat, the general plane of the seat lying at an angle of 70.degree. to 85.degree. with respect to the support post at least when the chair is in use. In use, the seat lies virtually horizontally as the leg portion stands on the ground or floor in an inclined posture.