Patent ID: 6042625
Filing Date: 2000-03-28
Classification: H01M,Y02P,Y10T

Abstract:
A method of fabricating a battery having spirally wound electrodes, said battery comprising an electrode group formed by spirally winding a positive electrode plate, a negative electrode plate, and a separator interposed between both electrodes, a battery case for housing said electrode group, a lead plate drawn from one electrode in said electrode group and connected in an electrically conducting relationship to an inner bottom surface of said battery case, and an insulating plate interposed between said lead plate and said electrode group, wherein at least a bottom surface of said insulating plate is formed from a heat weldable material; said method comprising the steps of:heat welding the lead plate to the bottom surface of the insulating plate;bending the lead plate, thereby holding the insulating plate on a bottom of the electrode group; andplacing the electrode group into the battery case.