Matsushita Electric Industrial Co., Ltd.

Kazunari Ando

Akihiro Taniguchi

Takashi Hottori

Kenji Kimura

Akitoshi Hiramatsu

A battery comprises at least four cells each comprising a bath in the shape of a rectangular parallelepiped having a width direction dimension greater than a thickness direction dimension, and a power generation element, the power generation element being contained in the bath, the thickness direction sides of the cells facing each other, and the width direction sides of the cells being arranged side by side. A coolant for cooling the cells is allowed to flow along the width direction sides of the cells.

Battery with proportional collectors, straps, and plates

A sealed lead-acid battery includes a separator made from hydrophilic treated sheet made from synthetic fiber which wraps at least either one of a positive electrode and a negative electrode. A mat type separator made from fine glass fiber is disposed between the wrapped electrode and its opposite electrode. This structure is adopted in a battery which uses a paste type electrode where an expanded grid having no outer frame on both edges is used, thereby prolonging cycle life even after cycling of charge and deep discharge.

Growing community of inventors

Kosai, Japan

Kazunari Ando