Plate stack for lead accumulators

摘要

In the case of a plate pack for lead-acid batteries, the grid plates of which have thicker plate lugs in the case of one polarity than those of the other polarity, the volumes and areas of the two types of lug are evened up by tapering the thicker lugs in a wedge-shape towards the end (figure), the end thickness a2 of the said thicker lugs being less than the thickness of the thinner lugs which are left in their original state with a completely rectangular cross-section. Under this precondition, the heat balance of each of the two types of lug is the same during the fusing on of the bridging lead in identical casting moulds and at the same lead temperature. The thicker lugs obtain their wedge-shaped geometry by machining with an end milling cutter.