GRILLE D'ÉLECTRODE POSITIVE POUR BATTERIE DE STOCKAGE AU PLOMB, ET BATTERIE DE STOCKAGE AU PLOMB

摘要

A positive electrode grid body for lead-acid battery includes frame rib shaped in a rectangular frame including a first lateral frame rib and a second lateral frame rib which extend in a lateral direction and a first longitudinal frame rib and a second longitudinal frame rib which extend in a longitudinal direction, an inner rib disposed in the frame rib and including a plurality of lateral crosspieces and longitudinal crosspieces which are connected to the frame rib to form a grid, a plurality of opening portions defined by a region surrounded by the frame rib and the plurality of lateral crosspieces and longitudinal crosspieces, and a region surrounded by the plurality of lateral crosspieces and longitudinal crosspieces, and a positive electrode current collection lug connected to the first lateral frame rib and located on the second longitudinal frame rib side. In a region having a length of at least one opening portion or more in the lateral direction of the lateral crosspieces from the first longitudinal frame rib, a cross-sectional area of the plurality of lateral crosspieces located on at least the first lateral frame rib side becomes larger from the second longitudinal frame rib side toward a portion connected to the first longitudinal frame rib.