Battery recharging system with state of charge detection that initially detects whether a battery to be charged is already at or near full charge to prevent overcharging

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United States of America Patent

PATENT NO 5642031
SERIAL NO

08203541

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ATTORNEY / AGENT: (SPONSORED)

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Abstract

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A state of charge test is first performed on the battery by applying a current pulse and then observing the voltage decay characteristics which result. Batteries which are initially nearly fully charged exhibit a larger voltage decay than batteries which are not as fully charged. The result of this initial state of charge test is used to determine how to best terminate battery charging. In this way battery overcharging is prevented regardless of the initial state of charge of the battery.

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Patent Owner(s)

  • BLACK & DECKER INC.

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Brotto, Daniele C Baltimore, MD 124 10219

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