Shin-kobe Electric Machinery Co., Ltd.

Hitachi Chemical Company, Ltd.

Satoshi Minoura

Masanori Sakai

Toshio Shibahara

Shinsuke Kobayashi

Satoru Takahashi

Keizo Yamada

Kenichi Maeda

Ichiro Shimoura

Tokiyoshi Hirasawa

Masatoshi Toduka

Detchko Pavlov Detchkov

Koji Kogure

Yoshinari Morimoto

Yuuji Araki

Tetsuro Ookoshi

Yoshihisa Okuda

Sasho Vassilev Vassilev

Vesselin Bojidarov Naidenov

Yovka Dineva Milusheva

On each negative plate (), a non-woven fabric () composed of fibers of at least one material selected from a group of materials comprising glass, pulp and polyolefins comes into contact with the entire surface of the plate without being integrated with the plate. Each negative plate (), which is in contact with the non-woven fabric (), is contained in an envelope separator () comprising a microporous synthetic resin sheet, and is laminated with a positive plate (). The non-woven fabric is manufactured through papermaking process in which glass fibers, pulp and silica powder are preferably used and dispersed in water as the main components.

Lead acid battery

In a valve-regulated lead-acid battery in which charging is performed intermittently on every short time and high rate discharging to a load is performed in a partial state of charge (PSOC), a valve-regulated lead-acid battery improved for the charge acceptance and the life characteristic under PSOC than usual is provided. A positive electrode plate having a specific surface area of an active material of 5.5 m/g or more is used. A valve-regulated lead-acid battery is manufactured by using a negative electrode plate improved for the charge acceptance and the life performance by adding a carbonaceous electroconductive material and a formaldehyde condensate of bisphenols aminobenzene sulfonic acid to a negative electrode active material and setting the specific gravity of an electrolyte to 1.30 or more and 1.35 or less.

Lead-acid battery

A power system where energy generated at a deceleration time of a running vehicle such as an automobile can be accepted as regenerative energy sufficiently and safely is provided. In a power system a non-aqueous solution system secondary battery group where 10 to 11 lithium ion secondary battery cells are connected in series and an aqueous solution system secondary battery group where control valve type lead-acid battery cells are connected in series are connected in parallel. The battery capacity of the non-aqueous solution system secondary battery group is smaller than that of the aqueous solution system secondary battery group The non-aqueous solution system secondary battery group and the aqueous solution system secondary battery group are charged at a current value of C or less from a motor generator and the ratio of the charged current value of the aqueous solution system secondary battery group to the charged current value of the non-aqueous solution system secondary battery group is 0.05 to 1.00.

Power supply system and state of charge estimating method

Growing community of inventors

Tokyo, Japan

Satoshi Minoura