초록 ▼

An alkaline storage battery such as a sealed nickel-cadmium storage battery has an improved current collector tab structure connected as a current path to the marginal edge of a spirally coiled electrode of an electrode assembly. The current collector tab structure comprises either a plurality of cu

An alkaline storage battery such as a sealed nickel-cadmium storage battery has an improved current collector tab structure connected as a current path to the marginal edge of a spirally coiled electrode of an electrode assembly. The current collector tab structure comprises either a plurality of current collector tabs or a single current collector tab comprising a current collecting tab and a lead tab thicker than the current collecting tab. With this arrangement, the internal resistance of the storage battery is reduced, and high-rate discharge performance is achieved.

대표청구항 ▼

An alkaline storage battery, comprising a case serving as one of positive and negative terminals, the case having an opening; an electrode assembly housed in the case, the electrode assembly comprising a positive electrode and a negative electrode which are wound as spiral coils with a separator int

An alkaline storage battery, comprising a case serving as one of positive and negative terminals, the case having an opening; an electrode assembly housed in the case, the electrode assembly comprising a positive electrode and a negative electrode which are wound as spiral coils with a separator interposed therebetween, the positive and negative electrodes having opposite terminal edges; a sealing cover mounted in the opening with an insulating seal ring therebetween, the sealing cover serving as the other terminal; and a pair of current collector tab means for collecting an electric current, one of the current collector tab means electrically connecting the terminal edge of one of the positive and negative electrodes to the case, the other current collector tab means electrically connecting the terminal edge of the other of the positive and negative electrodes to the sealing cover; the one current collector tab means comprising a first collector tab comprising a first current collecting tab welded to the terminal edge of one of the electrodes and a first lead tab integral with the first current collecting tab and welded to the sealing cover, and a second current collector tab consisting of a second lead tab welded and electrically connected to the first lead tab of the first current collector tab.