Bi-direction current control circuit for monitoring charge/disch

Details Bi-direction current control circuit for monitoring charge/disch Bi-direction current control circuit for monitoring charge/disch

1997-02-21

1998-08-04

Tso, Edward

Electricity: battery or capacitor charging or discharging

Battery or cell discharging

With charging

320136, H01M 1046

Patent

active

057899029

ABSTRACT:
A battery-monitoring circuit includes a bidirectionally current-controllable means disposed between a secondary battery and a charging circuit or a load circuit for monitoring the charge or discharge of the secondary battery to prevent undesirable charging. The current control means has characteristics as an active diode, which is constituted by an error amplifier to which a predetermined voltage and voltage between both terminals of the current control means are supplied. The current control means supplies an output to the current-controllable means, such that the output of the current-controllable means is controlled constant, equal to the predetermined voltage.

REFERENCES:
patent: 5304915 (1994-04-01), Sanpei et al.
patent: 5547775 (1996-08-01), Eguchi et al.
patent: 5554919 (1996-09-01), Uchida
patent: 5570004 (1996-10-01), Shibata

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