Charge equalizer or series of connected battery strings

Details Charge equalizer or series of connected battery strings Charge equalizer or series of connected battery strings

1999-03-16

1999-12-28

Tso, Edward H.

Electricity: battery or capacitor charging or discharging

Serially connected batteries or cells

With discharge of cells or batteries

320119, H01M 1046

Patent

active

060086238

ABSTRACT:
A charge equalizer adapted a battery charger to equally charge series of connected battery strings, comprising battery voltage sensing circuits, a microcontroller, logic and driving circuits, and flyback converters, operates to prevent the batteries of the series of connected battery strings from overcharging by activating the flyback converters to draw out the overcharging currents of the batteries in the series of connected battery strings and charging the whole battery strings by recharging currents which proportion to said drawn out currents as detecting each of the battery voltages in the battery strings being higher than a pre-determined voltage value during charging and digitizing the detected battery voltage signals; so as to achieve the purposes of equal charge in each battery and hence to improve the life of the battery strings as a whole.

REFERENCES:
patent: 5659237 (1997-08-01), Divan et al.

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