Expanded grid for electrode plate of lead-acid battery

摘要

Expanded grid, in which a slit is formed in a clad sheet integrating a thin layer of lead alloy containing at least one of tin and antimony at least on one side of a parent material made of lead or lead-calcium system alloy, which is processed by expanding to twist the rib (32) of the formed grid, and the thin layer of the lead alloy containing at least one of tin and antimony (33) is spirally directed in multiple directions, as the positive electrode plate, it is intended to improve securely the charging reception characteristic after long-term storage following deep discharge at high temperature of lead-acid battery.