Sony Corporation

Sony Interactive Entertainment Inc.

Murata Maunfacturing Co., Ltd.

Tsukasa Takahashi

Shoji Tatehata

Tomomichi Okada

Yoshiichi Horikoshi

Tsuyoshi Ohashi

Masayuki Kageyama

Daiki Yanagidaira

Yusuke Tanji

Katsushige Kanno

Kenta Honda

An electrical apparatus is provided which can reduce, when it is shipped in a state in which a secondary battery is built therein, power consumption before a user starts to use the electrical apparatus first. The electrical apparatus includes a secondary battery, a load which operates by power supplied from the secondary battery, and a switch element disposed between the secondary battery and the load. The switch element remains in an off state until a user starts use of the electrical apparatus.

Electrical apparatus

Battery

A battery pack includes a pack body that includes a battery cell and that has an external shape substantially symmetric with respect to the horizontal and vertical axes, viewed from a front face on which terminals are arranged, and a terminal unit on the front face. The terminal unit includes a positive terminal, a negative terminal, a control terminal, and a temperature detection terminal for outputting temperature data. The positive terminal and the negative terminal are arranged on one side with respect to a center line in the width direction of the pack body. The control terminal is arranged symmetrically to the temperature detection terminal with respect to the center line in the width direction of the pack body.

Battery pack and wiring substrate

A power supply device having a plurality of series-connected-battery blocks which are connected in parallel and in which two or more secondary cells capable of charging and discharging are connected in series, includes a constant-current control circuit provided for each of the series-connected-battery blocks.

Power supply apparatus with transistor control for constant current between series-connected battery blocks

Growing community of inventors

Fukushima, Japan

Tsukasa Takahashi