Patent ID: 7118828

Claim:
A battery, comprising: a battery case; positive and negative electrodes alternately stacked and isolated by separators and housed in the battery case, each of the positive electrodes having an active material positioned on a substrate such that the substrate has a positive exposed region on which the active material is not positioned, a positive hole extending through the substrate, and each of the negative electrodes having an active material positioned on a substrate such that the substrate has a negative exposed region on which the active material is not positioned, a negative hole extending through the substrate, and positive spacers stacked alternately with the positive electrodes such that a positive spacer is positioned between the positive exposed regions on different substrates, and negative spacers stacked alternately with the negative electrodes such that a negative spacer is positioned between the negative exposed regions on different substrates, wherein the positive spacers maintain predetermined spacing between the positive electrodes and wherein the negative spacers maintain predetermined spacing between the negative electrodes; a positive current collector passing through the positive holes end electrically coupled to the positive electrodes via welding; a negative current collector passing through the negative holes and electrically coupled to the negative electrodes via welding; and an electrolyte operatively associated with the electrodes.