IMPEDANCE MEASUREMENT DEVICE
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United States of America Patent
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Issued Date -
Jul 11, 2024
app pub date -
Mar 25, 2022
filing date -
May 24, 2021
priority date (Note) -
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status (Latency Note)
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Abstract
A signal injection unit configured to inject an AC signal to an target injection line to which a battery is connected in series, a non-contact-type current sensor that detects a current value of the AC signal flowing through the target injection line in a non-contact manner with respect to the target injection line and outputs a detection signal, a voltage detection unit that detects a voltage value of an AC voltage generated at ends of the battery by being in contact with the ends and outputs an end-to-end voltage signal, and a processing unit that measures an internal impedance of the battery on the basis of the detection signal and the end-to-end voltage signal. The signal injection unit is configured to inject the AC signal to the target injection line in a non-contact manner.
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