Charging apparatus

Details Charging apparatus Charging apparatus

2006-06-02

2010-12-21

Tso, Edward (Department: 2858)

Electricity: battery or capacitor charging or discharging

Capacitor charging or discharging

C320S167000

Reexamination Certificate

active

07855533

ABSTRACT:
A charging apparatus suppresses rise in temperature of an internal chip of a charging element. The output signal obtained from a current detecting portion for detecting charging current to a capacitor and from a voltage detecting portion for detecting a difference between a voltage (VC) of capacitor and a voltage corresponding to DC power supply is integrated by integrator. The charging is carried out by controlling power of a charging element to a predetermined value using an output signal of the integrator and at a time near the completion of the charging, the charging element is controlled by constant-voltage-control-circuit so as to charge the capacitor up to a predetermined voltage. Consequently, the maximum temperature inside the charging element is reduced, thereby providing a charging apparatus with high reliability.

REFERENCES:
patent: 2007/0194759 (2007-08-01), Shimizu et al.
patent: 2009/0033294 (2009-02-01), Odajima et al.
patent: 05-116571 (1993-05-01), None
patent: 11-289684 (1999-10-01), None
patent: 2004-282846 (2004-10-01), None
patent: 2005-057863 (2005-03-01), None
patent: 2005-278302 (2005-10-01), None
patent: 2006-166542 (2006-06-01), None
International Search Report for Application No. PCT/JP2006/311064 dated Aug. 1, 2006.

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