Ngk Insulators, Inc.

Yuki Tsuji

Takuya Ishihara

Masahiro Murasato

Yasuhiro Horiba

Ichiro Okazaki

Miho Kasahara

Kazuyuki Tahara

An outer peripheral surface of a cylindrical cell is coated with a heat insulation material. A heat-resistant material is stacked radially outside the heat insulation material. An electrical insulation material is stacked radially outside the heat-resistant material. The order in which the heat insulation material, the heat-resistant material and the electrical insulation material are stacked one on top of another may be changed. A coating material other than the heat insulation material, the heat-resistant material and the electrical insulation material may be provided.

Coated cell and module battery

A sodium-sulfur battery according to the present invention is provided with a reservoir spacethat retains and solidifies a high-temperature molten material having flowed out of a cell, in order to prevent the high-temperature molten material from leaking out of a casing, even when an accident occurs to generate the high-temperature molten material inside the casing. The reservoir spacecan be formed along a perimeter of the casing, or alternatively, can be formed inside the casing. The reservoir spaceincludes, for example, a composite memberof a rigid member, a heat-insulating material, and a heat-resisting material

Sodium-sulfur battery

Growing community of inventors

Ichinomiya, Japan

Yuki Tsuji