Electricity: battery or capacitor charging or discharging – Serially connected batteries or cells – With discharge of cells or batteries
Patent
1996-11-29
1997-11-11
Wong, Peter S.
Electricity: battery or capacitor charging or discharging
Serially connected batteries or cells
With discharge of cells or batteries
320 31, 320 32, 320 15, 320 2, H02J 700
Patent
active
056868162
ABSTRACT:
A charging control circuit is disclosed which comprises: a 1st connector (17) receiving an input supply power (34); a 2nd connector (30) for supplying a charging supply power (35) to charge either of a 1st (Ni-Cd) or 2nd (Lithium ion) battery (33a, 33b) and receiving a discharging supply power (36) from the battery; a kind detection portion (15) for detecting which of the 1st and 2nd kind of battery is to be charged; a voltage detection circuit for detecting an emf of the battery to be charged; a current detection circuit for detecting a charging current to the battery to be charged; a REF signal generation portion (15) for generating a REF signal (38) in accordance with outputs from the kind detection portion, the current detection circuit, and the voltage detection circuit; a difference providing portion (111) for providing a difference between the REF signal and the detected emf; and a charging supply power generation circuit for generating the charging supply power from the input supply power according to the output of the difference providing portion (111). The Ni-Cd battery is charged by a constant current and the lithium ion battery, by a constant current and a constant voltage (4.1 V). Completion of charging is detected by a drop of emf of Ni-Cd and decrease in the charging current to Lithium ion battery.
REFERENCES:
patent: 5049804 (1991-09-01), Hutchings
patent: 5157320 (1992-10-01), Kuriloff
patent: 5164652 (1992-11-01), Johnson et al.
patent: 5184059 (1993-02-01), Patino et al.
patent: 5204611 (1993-04-01), Nor et al.
patent: 5387820 (1995-02-01), Imagawa
patent: 5420493 (1995-05-01), Hargadon et al.
patent: 5449997 (1995-09-01), Gilmore et al.
patent: 5534765 (1996-07-01), Kresinger et al.
patent: 5606240 (1997-02-01), Kokuga et al.
Hayashi Takahiro
Kunitomo Kouichi
Matsushita Electric - Industrial Co., Ltd.
Shin K.
Wong Peter S.
LandOfFree
Charging control circuit does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Charging control circuit, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Charging control circuit will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-1231943