Sanyo Electric Co., Ltd.

Satoru Kometani

Takeo Hamamatsu

Takashi Nagase

Masao Inoue

Masao Takee

Tadashi Ise

Yasushi Kuroda

Hiroshi Sato

Taishi Maeda

Teruhito Nagae

Etsuya Fujisaka

Kenji Arisawa

Hirofumi Sako

Hideyuki Asanuma

Yoshihiro Masuda

Nobuyoshi Oi

Eiji Enishi

Toshiyuki Kondo

A battery including an outer casing, positive and negative electrodes provided in the outer casing, and an electrolyte provided therebetween. The outer casing is electrically connected to one of the positive and negative electrodes to constitute one of electrode terminals. The other is connected to the other electrode terminal which is electrically insulated from the outer casing. At least one of the positive and negative electrodes and the electrode terminal are connected to each other through a collector, which includes a plate-shaped body section and a connecting piece extended in an almost vertical direction from an end of the body section. The body section or the connecting piece is provided with a bending guide section which can be bent in such a direction that the connecting piece approaches the body section.

Collector used for an alkali storage battery

An alkaline storage battery has a group of spiral electrodes composed of positive and negative electrode plates spirally wound with first and second separators respectively located at the outside of the positive electrode plate and at the inside of the positive electrode plate. The weight per unit area of the first separator is greater than that of the second separator.

Alkaline storage battery with reinforced separators

A rectangular battery having an electrode group which is inserted in a battery case having an airtight structure. The electrode group is formed by alternately stacking positive electrodes and negative electrodes via separators. The battery case is rectangular had has a closed bottom and an open part that is airtightly sealed by a cover. The outermost electrodes, which are located on both faces of the electrode group, are coated with an active material on a surface of a core. Furthermore, the outermost electrodes have the same polarity and the cores thereof directly contact an inside surface of the outer battery case. In one embodiment, the capacity of the outermost electrodes is smaller than the capacity of the inwardly disposed electrodes of the same polarity.

Rectangular battery

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Itano-gun, Japan

Satoru Kometani