Aisin Seiki Kabushiki Kaisha

Kazunobu Sawada

Takaki Kamio

Yuuki Fujitani

Muneharu Mizutani

Katsumi Yamada

Masatoshi Miwa

A lead-acid battery includes cell rooms in which cells are stored and a partition wall separating the cell rooms. The cell rooms include an electrode plate assembly having electrode plates facing each other with a separator sandwiched between the electrode plates, and positive and negative straps extending in a laminated direction of the electrode plates in a bar shape. The positive and negative straps are connected in parallel with lug portions of the electrode plates. An intercell electrically connecting member having a H-shaped cross-section and formed of a lead-based material is held by the partition wall to interconnect cells in adjacent cell rooms. The intercell electrically connecting member has a first butting end surface in a flat plane shape butt welded to the positive strap, and a second butting end surface in a flat plane shape butt welded to the negative strap. Butting connection of the intercell electrically connecting member and each of the positive and negative straps improves their connecting strength.

Growing community of inventors

Toyota, Japan

Kazunobu Sawada