MUMBAI, India, May 1 -- Intellectual Property India has published a patent application (202641051303 A) filed by P. Divyakumar; G. Venu Ratna Kumari; Ms. Fathima Rumaiza SM; Dr. M. Krithika; Roshan Chitranshi; Dr. Manikandan S; Nivi V; N. Gayathri; and Dr. S. Saravanan, Coimbatore, Tamil Nadu, on April 22, for 'a method and system for real-time estimation of state of health (soh) and state of charge (soc) in electric vehicle batteries.'
Inventor(s) include P. Divyakumar; G. Venu Ratna Kumari; Ms. Fathima Rumaiza SM; Dr. M. Krithika; Roshan Chitranshi; Dr. Manikandan S; Nivi V; N. Gayathri; and Dr. S. Saravanan.
The application for the patent was published on May 1, under issue no. 18/2026.
According to the abstract released by the Intellectual Property India: "The present invention relates to the development of a precise estimate of SOC and SOH in real time is important in terms of maximizing the performance and safety and improving the lifetime of the battery used in electric vehicles (EVs). Nevertheless, dynamic changes in operation and complex phenomena of electrochemical aging can adversely impact estimation accuracy. In this research, we propose a method and system to estimate SOC and SOH in real time, which solves the problem by addressing these crucial issues. We introduce a hybrid method that consists of an advanced equivalent circuit model along with a two-stage adaptive filter approach using real-time voltage, current, and temperature sensor information. In particular, the key benefit of the proposed method lies in its ability to separate transient electrochemical effects from aging through dynamic parameter tuning. Real-world test results using standard drive cycles show improved estimation accuracy, robustness to noisy sensor measurements, and lower computation cost than traditional approaches."
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