Delta Electronics (Thailand) has been granted a patent for a device that estimates the lifetime consumption of electrolytic capacitors. The device features a thermally insulated temperature sensor and a controller that calculates lifetime consumption based on temperature and ripple current measurements. GlobalData’s report on Delta Electronics (Thailand) 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 Delta Electronics (Thailand), HEV energy management was a key innovation area identified from patents. Delta Electronics (Thailand)'s grant share as of June 2024 was 58%. Grant share is based on the ratio of number of grants to total number of patents.
Device for estimating electrolytic capacitors' lifetime consumption
The patent US12038485B2 describes an innovative apparatus designed to estimate the lifetime consumption of electrolytic capacitors, which are critical components in various electronic devices, particularly power supplies. The apparatus includes one or more electrolytic capacitors, a temperature sensor, and a controller. The temperature sensor is strategically insulated from the ambient environment, either positioned between two parallel-connected capacitors or mounted on the capacitor case and covered with thermal insulation. The controller utilizes data from the temperature sensor to estimate the lifetime consumption of the capacitors, correlating it to the time segment and the measured or assumed case temperature and effective ripple current.
Further enhancements to the apparatus include the integration of meters and detectors that measure voltage, power, and current properties, which influence the electrolytic capacitors. The controller can incorporate this additional data into its lifetime consumption estimations. It also employs look-up tables to estimate effective ripple current based on various operational parameters, such as input and output modes and power values. The controller is capable of determining uncertainties in both effective ripple current and lifetime consumption, allowing for a more accurate prediction of the capacitors' residual lifetime. Additionally, the apparatus can be configured to monitor usage cycles, updating lifetime predictions based on real-time data, and alerting users to significant deviations in performance metrics. This comprehensive approach aims to enhance the reliability and longevity of electronic devices utilizing electrolytic capacitors.
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