The Furukawa Battery Co., Ltd.

Shinya Suge

Atsushi Sato

Hideki Hagihara

Jun Furukawa

Masashi Matsushita

Katsuya Nukui

Akihiro Nishimura

Masaki Shimotsuya

Yusuke Ogino

Yutaro Kawaguchi

Koshin Takemoto

Ryo Tainaka

A liquid-type lead storage battery includes a positive electrode collector formed of a lead alloy having a rolled structure. A grid substrate of the collector has an upper frame bone located on the upper side and a lower frame bone located on the lower side, each extending laterally, and a pair of vertical frame bones extending vertically. A lug projects upward from a position shifted to the side close to either one of the pair of vertical frame bones from the longitudinal center of the upper frame bone. The intermediate bones have vertical intermediate bones from the upper to lower frame bone and lateral intermediate bones connecting the pair of vertical frame bones. At least one of the lateral intermediate bones has a cross-sectional area B larger than an average value A of the cross-sectional areas of the plurality of lateral intermediate bones, such that B/A is 1.15 or more.

Liquid-type lead storage battery

A positive electrode grid body for lead-acid battery includes frame rib including first and second lateral frame ribs and first and second longitudinal frame ribs, an inner rib including a plurality of lateral and longitudinal crosspieces, a plurality of opening portions, and a positive electrode current collection lug connected to the first lateral frame rib. 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.

Positive electrode grid body for lead-acid battery, and lead-acid battery

Growing community of inventors

Iwaki, Japan

Shinya Suge