O2Micro International has been granted a patent for a method to detect abnormalities in battery management systems. The method involves calculating theoretical and measured time constants, controlling a switch, and assessing voltage measurements to determine if the system is functioning outside preset parameters. GlobalData’s report on O2Micro International 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 O2Micro International, Battery management systems was a key innovation area identified from patents. O2Micro International's grant share as of July 2024 was 63%. Grant share is based on the ratio of number of grants to total number of patents.
Battery management system abnormality detection method
The patent US12061237B2 outlines a method and system for detecting abnormalities in a battery management system (BMS). The BMS includes various components such as a measure unit, control unit, monitoring resistors, a capacitor, a switch, and a balance resistor, all connected to a battery cell. The method involves calculating a theoretical time constant for the battery cell, determining a preset range for this constant, and controlling the switch to perform a series of on-off cycles. During these cycles, the control unit measures voltage values on the capacitor at specified time intervals to derive a measured time constant. If this measured time constant exceeds the preset range, the BMS is deemed abnormal.
Further claims detail the specific calculations and measurements involved in determining the theoretical and measured time constants. The method allows for multiple voltage measurements at different time points, enabling the control unit to compute the time constants using logarithmic equations. The system is designed to execute these methods efficiently, ensuring accurate detection of potential issues within the battery management system, thereby enhancing the reliability and safety of battery-operated devices.
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GlobalData Patent Analytics tracks bibliographic data, legal events data, point in time patent ownerships, and backward and forward citations from global patenting offices. Textual analysis and official patent classifications are used to group patents into key thematic areas and link them to specific companies across the world’s largest industries.
