Grid for lead storage batteries

摘要

PCT No. PCT/JP85/00088 Sec. 371 Date Oct. 27, 1986 Sec. 102(e) Date Oct. 27, 1986 PCT Filed Feb. 26, 1985 PCT Pub. No. WO86/05031 PCT Pub. Date Aug. 28, 1986.This invention relates to a grid for a lead storage battery which comprises a network unit (5) formed from a lead alloy sheet (1) of a first alloy layer (2) of a lead-calcium alloy and a second alloy layer (3) of a lead-tin alloy having a higher concentration of tin than the first alloy layer, the first alloy layer (2) and the second alloy layer (3) being exposed at slits of the network unit. The use of such a grid can provide a lead storage battery which has both good maintenance-free characteristics inherent to the lead-calcium alloy and good recovery after overdischarge resulting from the second alloy having a high concentration of tin. Thus, the storage battery is highly reliable.