Battery pack and portable electronic device

Chemistry: electrical current producing apparatus – product – and – Having specified venting – feeding or circulation structure – Venting structure

Reexamination Certificate

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Details

C429S062000, C429S099000, C429S151000, C429S156000, C429S185000

Reexamination Certificate

active

07851079

ABSTRACT:
The present invention includes a plurality of battery cells, each provided with a gas discharge valve. A housing accommodates the battery cells and has a gas opening. The housing does not melt at an inside temperature of the battery pack increased by gas discharged from the gas discharge valve. A blocking member blocks the gas opening and melts at the inside temperature of the battery pack increased by the gas discharged from the gas discharge valve, breaching the gas opening.

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patent: 2000-67840 (2000-03-01), None
patent: 2006185894 (2006-07-01), None
Machine Translation of JP 2006/185894A, Nakano, Hisako, Jul. 2006.

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