Secondary battery unit using electric double layer condenser

Details Secondary battery unit using electric double layer condenser Secondary battery unit using electric double layer condenser

1998-11-06

2000-02-01

Tso, Edward H.

Electricity: battery or capacitor charging or discharging

Battery or cell discharging

With charging

H01M 1046

Patent

active

060207191

ABSTRACT:
A secondary battery unit which can supply constant power for a longer time with a lower input voltage and which is small, light, and suitable for portable use is provided. The secondary battery unit comprises plural inductors having different inductances, to which the first voltage is input; a rectifier inserted between the plural inductors and the output terminal; plural switches respectively connected to the plural inductors, each switch making current according to the first voltage flow through the connected inductor when the switch is operated; a switching controller for selectively operating one of the plural switches according to variation of the first voltage; and a controller for controlling timing of the above switching between the plural switches so as to stabilize a voltage from the output terminal to the predetermined second voltage.

REFERENCES:
patent: 4904923 (1990-02-01), Zucker
patent: 5723913 (1998-03-01), Weggel

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