Charge device capable of lengthening a lifetime of a storage cel

Details Charge device capable of lengthening a lifetime of a storage cel Charge device capable of lengthening a lifetime of a storage cel

1991-01-23

1992-09-29

Hickey, R. J.

Electricity: battery or capacitor charging or discharging

Serially connected batteries or cells

With discharge of cells or batteries

320 39, H02J 700

Patent

active

051516454

ABSTRACT:
In a charge device having a storage cell terminal (11) to be connected to a storage cell (12) to be charged, a trickle charge terminal (13) for receiving a trickle charge voltage, and a boost charge terminal (14) connected to the storage cell terminal for receiving a boost charge voltage and including a constant current circuit (16) for causing a constant current to flow from the trickle charge terminal to the storage cell terminal, a boost charge detector detects the boost charge voltage to produce a boost charge signal when the boost charge terminal is supplied with the boost charge voltage. An interrrupting circuit interrupts the constant current when the boost charge detector circuit produces the boost charge signal. The constant current circuit may comprise a transistor (161) having a base electrode supplied with the trickle charge voltage to produce the constant current. In this event, the interrupting circuit is a conductor (191) connected between the boost charge detector and the base electrode of the transistor (161).

REFERENCES:
patent: 3668418 (1972-06-01), Godard
patent: 3733534 (1973-05-01), Saslow
patent: 4623832 (1986-11-01), Fujiwara
patent: 4888544 (1989-12-01), Terry et al.

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