H - Electricity
02
J
H02J 7/34 (2006.01) H02M 3/18 (2006.01) H04Q 7/32 (2006.01)
Patent
CA 2432476
A battery pack is provided for use when charging of a dedicated secondary battery in a portable terminal device is difficult. The battery pack is mounted in a battery mounting section in a portable cellular phone. In the battery pack, alkaline accumulators are connected in series. Alkaline accumulators generate electromotive forces having a voltage (3V) being lower than that of the dedicated secondary battery. A power source circuit has a boosting- type DC/DC converter which boosts a voltage of the alkaline accumulators being connected in series at a level same as that of the dedicated secondary battery (for example, 4.5V), and outputs the boosted voltage. An electrical double layer capacitor has a capacity to feed stable power to an internal circuit in which power consumption increases or decreases in a burst manner and is charged by application of an output of the power source circuit and stores the power.
Inoi Takayuki
Sasaki Hiroshi
Nec Tokin Corporation
Smart & Biggar
LandOfFree
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