Kabushiki Kaisha Toshiba

Takashi Shimoyamada

Koichi Kawamura

Kenichi Takahashi

Hiroyuki Hasebe

Yukinori Akamoto

Nobuyasu Negishi

Hideyuki Oozu

Hidenori Suzuki

Hideaki Yasui

Kiyoshi Senoue

Yoshie Ozeki

Akio Hiwara

Takashi Hayashi

Hirofumi Kan

Yuichi Yoshida

Yuuichi Sato

Genta Oomichi

Makoto Miyahara

Michiyuki Kitamoto

Fumihata Yamamoto

The present invention relates to a fuel cell including: a membrane electrode assembly () having a fuel electrode (), an air electrode (), and an electrolyte membrane () sandwiched therebetween; and a fuel storage unit () storing a liquid fuel. The fuel cell is capable of continuously generating electricity for long hours only by being replenished with a fuel, and therefore, attempts have been made to miniaturize the fuel cell to use it as a power source of portable electronic devices. When the membrane electrode assembly and the fuel storage unit in the fuel cell are connected via a flow path, a fuel supply state becomes uneven depending on the shape and the like of the flow path even though a supply amount of the fuel can be adjusted, which causes a problem such as a decrease in an output of the fuel cell. The present invention solves the aforethe problem by providing, in the fuel cell, a fuel distributing mechanism () which supplies the fuel to a plurality of places of the fuel electrode, and connecting the fuel distributing mechanism and the fuel storage unit via the flow path ().

Fuel cell

In electronic equipment using a fuel cell as a power source, an antenna and a fuel cell, which are provided in a lower case of a main body receiving electronic parts, are arranged at a given distance from each other. An acceptable communication state can be established in the electronic equipment.

Electronic equipment

A PDA, which functions as an electronic unit, includes power supply which includes a fuel cell unit and an auxiliary power supply which is charged by an output of the fuel cell unit. A non-use state of the PDA is detected by non-use detection unit. Upon detection of the non-use state by the non-use detection unit, the output from the fuel cell unit is stopped and an output of the auxiliary power supply is shut off.

Electronic apparatus and fuel cell system

A nonaqueous electrolyte secondary battery includes an electrode group prepared by winding spirally or in a flattened shape a laminate structure including a separator interposed between positive and negative electrodes, and a nonaqueous electrolyte held by the electrode group, wherein an edge portion of the separator in a direction perpendicular to a winding direction protrudes outward from edges of the positive and negative electrodes in the direction perpendicular to the winding direction, and the separator satisfies conditions given by formulas (1) to (3) given below:0&#x2266;&#x2266;(/1.5)&#x2266;10&#x2003;&#x2003;(1)X&#x2266;10&#x2003;&#x2003;(2)X&#x2266;Y&#x2266;20.&#x2003;&#x2003;(3)

Nonaqueous electrolyte secondary battery

Growing community of inventors

Kawasaki, Japan

Takashi Shimoyamada