Ni—Cd battery with a state of charge indicator
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United States of America Patent
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Feb 2, 2021
Grant Date -
May 18, 2017
app pub date -
Nov 15, 2016
filing date -
Nov 16, 2015
priority date (Note) -
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Abstract
A battery made up of nickel-cadmium cells includes an indicator for displaying a state of charge comprising sensors for performing continuous measurements of voltage and current and of temperature of the battery, a memory storing at least a history of charge/discharge, a predefined reference voltage, current and temperature, and the measurements and history determined, and a control unit for determining an operation mode of the battery and determining a correction to be applied to the voltage and current measured, calculating a theoretically available capacity of the battery depending on the operating mode and the correction, determining a need for recalibration of the theoretically available capacity of the battery enabling a capacity actually available of the battery to be calculated, and based on the capacity actually available, defining the state of charge of the battery.
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