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Ripple, Noise, Charge and Discharge: Turning Unwanted Signals for Your Advantage

Dr. Zbigniew Noworolski

Eric Roman

The designer of the battery monitoring system faces the difficult task of choosing the technology that will allow the extraction of information for the state of health of the battery while the battery is online. For the purpose of assessing the battery internal ohmic value, some battery monitoring manufacturers inject AC signals in to the battery strings, while others periodically apply a load pulse. Unfortunately, those signals are not always welcomed by the battery user or battery manufacturer.

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