Direct methanol fuel cell pack heating system

Electricity: battery or capacitor charging or discharging – Wind – solar – thermal – or fuel-cell source

Reexamination Certificate

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Details

C429S010000, C429S006000

Reexamination Certificate

active

07579806

ABSTRACT:
A temperature sensor (13) and a heating device (14) are provided to prevent moisture from freezing i a direct methanol fuel cell (16). To achieve this, a secondary battery (17) is connected in parallel to the fuel cell. When the temperature drops to a predetermined level, the secondary battery, using electricity it as stored from the fuel cell, heats a ceramic device. This device is located near the fuel cell, the fuel container (15), or both. When the fuel cell again reaches the desired temperature, it begins normal operations and also recharges the secondary battery. The heating system is prevented from working if a fuel container is not installed in a battery pack or if the battery pack is not connected to an electronic device or if that electronic device is turned off.

REFERENCES:
patent: 4650729 (1987-03-01), Nakamura et al.
patent: 4670702 (1987-06-01), Yamada et al.
patent: 5302471 (1994-04-01), Ito et al.
patent: 2003/0138676 (2003-07-01), Leban
patent: 2003/0224224 (2003-12-01), Okada et al.
patent: 2004/0219409 (2004-11-01), Isogai
patent: 2005/0206342 (2005-09-01), Aleyraz et al.
patent: 2004-081388 (2004-03-01), None

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