Panasonic Corporation

Tsunenori Yoshimura

Shinichi Iwasaki

Kazuhiro Sugie

Kazuhiko Shimoda

Koichi Yonemura

Shozo Murochi

Shoji Horie

Hiroshi Yasuda

Mitsuru Kurokawa

Sadao Furuya

Michio Kurematsu

A lead storage battery of the present invention has an electrode plate pack comprising a plurality of negative electrode plates in each of which a negative electrode active material layer is retained by a negative electrode grid, a plurality of positive electrode plates in each of which a positive electrode active material layer is retained by a positive electrode grid, and a plurality of separators separating the positive electrode plate and the negative electrode plate; a positive electrode connecting member connected to each positive electrode plate of the electrode plate pack, and a negative electrode connecting member connected to each negative electrode plate of the electrode plate pack. The positive and negative electrode grids, and the positive and negative electrode connecting members comprise a Pb alloy including at least one of Ca and Sn; the negative electrode active material layer includes Sb; and the separator includes silica.

Long life and low corrosion lead storage battery with a separator including silica and oil

A lead storage battery of the present invention has an electrode plate pack including: a plurality of negative electrode plates in each of which a negative electrode active material layer is retained by a negative electrode grid, a plurality of positive electrode plates in each of which a positive electrode active material layer is retained by a positive electrode grid, and a plurality of separators separating the positive and negative electrode plate; a positive electrode connecting member connected to each positive electrode plate of the electrode plate pack; and a negative electrode connecting member connected to each negative electrode plate of the electrode plate pack. The positive and negative electrode grids, and the positive and negative electrode connecting members comprise a Pb alloy including at least one of Ca and Sn, the negative electrode grid further includes Sb in a part thereof excluding the tab part, and the separator includes silica.

Long life and low corrosion lead storage battery

This invention provides a lead battery that becomes usable by injecting an electrolyte thereinto. The battery includes: positive and negative electrode plates each having a grid comprising a Pb&#x2014;Ca based alloy; separators that separate the positive electrode plates from the negative electrode plates; the electrolyte comprising sulfuric acid; and a battery container accommodating the positive and negative electrode plates, the separators, and the electrolyte. The battery container is sealed, and part of the positive and negative electrode plates is immersed in the electrolyte. The height Yof the positive and negative electrode plates and the distance Yfrom the bottom of the positive and negative electrode plates to the level of the electrolyte satisfy the relation:15&#x2266;&#xd7;100&#x2266;60.

Lead battery and lead battery storage method

A lead acid battery of the present invention has: an electrode plate pack including a plurality of negative electrode plates which each comprise a negative electrode grid having a tab and a negative electrode active material layer retained by the negative electrode grid, a plurality of positive electrode plates which each comprise a positive electrode grid having a tab and a positive electrode active material layer retained by the positive electrode grid, and a plurality of separators separating the positive and negative electrode plates; a positive electrode connecting member connected to each positive electrode plate of the electrode plate pack; and a negative electrode connecting member connected to each negative electrode plate of the electrode plate pack. The positive electrode grid has a lead alloy layer including 0.01 to 0.2 parts by weight of Sb per 100 parts by weight of the positive electrode active material on at least a part of the surface thereof where the positive electrode active material layer is in contact. The negative electrode active material layer includes 0.0001 to 0.003 parts by weight of Sb per 100 parts by weight of the negative electrode active material.

Lead acid battery including antimony

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Shizuoka, Japan

Tsunenori Yoshimura