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A negative electrode for lead accumulators has the form of a rectangular, expanded metal, grid plate 11 of copper. The grid plate serves as carrier for the active mass and for the supply and extraction of current. The direction of stretching of the expanded metal extends parallel to the edge of the

A negative electrode for lead accumulators has the form of a rectangular, expanded metal, grid plate 11 of copper. The grid plate serves as carrier for the active mass and for the supply and extraction of current. The direction of stretching of the expanded metal extends parallel to the edge of the rectangular grid plate at which the connection lug is arranged. A lead strip 13, which is in one piece with the connection lug, is conductively secured to the top edge of the grid plate. The lead strip 13 is cast onto the grid plate 12 (FIG. 1).

대표청구항 ▼

In a negative electrode for lead accumulators in the form of a rectangular expanded metal grid plate of copper having upper and lower ends forming upper and lower crossing points of said grid which serves as a carrier for an active mass and for current supply and extraction, the direction of stretch

In a negative electrode for lead accumulators in the form of a rectangular expanded metal grid plate of copper having upper and lower ends forming upper and lower crossing points of said grid which serves as a carrier for an active mass and for current supply and extraction, the direction of stretching of the expanded metal extending parallel to an end of the rectangular grid plate at which a connection lug is provided, and wherein a lead strip, unitary with [a]the connection lug, is conductively secured to [one]said end of said grid plate over the whole length thereof, the improvement wherein said copper grid is covered with a galvanically applied layer of a lead-tin alloy and the lead strip is cast onto the grid plate [and said copper grid is covered by a lead or]on top of the previously galvanically applied lead-tin alloy layer, and wherein the end regions of the grid plate which are either cast with lead or surrounded by a synthetic material, are pressed flat in a plane to form the grid plate prior to the casing of the lead and application of the synthetic material respectively.