ON Semiconductor has been granted a patent for a fuel gauge system that includes a voltage sensor, memory, processor, mode control logic circuit, and sampling timer. The gauge adjusts sampling frequency based on power drawn by a battery, enhancing accuracy in monitoring battery levels. GlobalData’s report on ON Semiconductor gives a 360-degree view of the company including its patenting strategy. Buy the report here.
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According to GlobalData’s company profile on ON Semiconductor, was a key innovation area identified from patents. ON Semiconductor's grant share as of April 2024 was 73%. Grant share is based on the ratio of number of grants to total number of patents.
Battery fuel gauge with dynamic sampling frequency adjustment
A recently granted patent (Publication Number: US11971767B2) discloses a fuel gauge system that includes a voltage sensor, memory, processor, mode control logic circuit, and sampling timer. The fuel gauge is designed to adjust its sampling frequency based on fluctuations in measured power values of a battery. This adjustment can involve increasing, decreasing, or maintaining the sampling frequency, which can range from zero to high frequency levels. The memory of the fuel gauge stores RSOC values derived using Coulomb counting or voltage tracking methods, and the system can also calculate internal resistance values.
Furthermore, the patented fuel gauge system includes features such as a fluctuation monitor block, temperature sensor, and the ability to compare power value fluctuations to threshold values derived from RSOC values in memory. By continuously sampling power values and analyzing fluctuations, the fuel gauge can optimize its sampling frequency to conserve power effectively. The method described in the patent involves sampling battery power values, determining fluctuations, comparing them to threshold measurements, and adjusting the sampling rate accordingly. Additionally, the system can utilize temperature data from the battery to calculate threshold power measurements and operate in different sampling frequency modes to enhance power conservation efforts.
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