Charging apparatus

Details Charging apparatus Charging apparatus

2005-09-27

2005-09-27

Tibbits, Pia (Department: 2838)

Electricity: battery or capacitor charging or discharging

Battery or cell charging

With thermal condition detection

Reexamination Certificate

active

06949914

ABSTRACT:
A charging apparatus includes a cooling fan; a battery temperature detecting unit; and a control unit configured to determine presence or non-presence of cooling effect by the cooling fan, and to control a charging current based on an output of the battery temperature detecting unit. When there is no cooling effect and the battery temperature reaches a first predetermined value smaller than a maximum value of a temperature range in which a battery is chargeable without making a life time thereof shorter, the control unit changes the charging current to a first charging current value where increase of the battery temperature can be suppressed. When there is cooling effect and the battery temperature reaches a second predetermined value higher than the first predetermined value, the control unit changes the charging current to a second charging current value larger than the first charging current value.

REFERENCES:
patent: 6114839 (2000-09-01), Takano et al.
patent: 6204639 (2001-03-01), Takano et al.
patent: 6275009 (2001-08-01), Sakakibara et al.
patent: 6433517 (2002-08-01), Sakakibara

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