Samsung patents method to estimate battery health during rest periods
Samsung has been granted a patent for a method that estimates battery parameters while the device is not in use. The system calculates the battery's open circuit voltage by analyzing how charge moves into the positive and negative electrodes during this rest time. This calculation allows the device to better understand the battery's current state without active charging or discharging.
In the filing’s own words
The following description relates to a method and system with battery parameter estimation for a rest period. A method of estimating a battery parameter of a battery for a rest period of the battery includes: based on determining that an intercalation flux of the battery satisfies a predetermined condition, calculating an open circuit voltage (OCV) of the battery, wherein the OCV is calculated based on an initial voltage, a first time constant corresponding to a positive electrode of the battery, a second time constant corresponding to a negative electrode of the battery, a first constant, a second constant, and a value of a time variable for the rest period; and estimating the battery parameter based on the calculated OCV of the battery.
What exactly they claim (claim 1)
1. A processor-implemented method of estimating a battery parameter of a battery for a rest period of the battery, the method comprising: based on determining that an intercalation flux of the battery satisfies a predetermined condition, calculating an open circuit voltage (OCV) of the battery, wherein the OCV is calculated based on an initial voltage, a first time constant corresponding to a positive electrode of the battery, a second time constant corresponding to a negative electrode of the battery, a first constant, a second constant, and a value of a time variable for the rest period; estimating the battery parameter based on the calculated OCV of the battery; and controlling charging and discharging of the battery based on a result of the estimating, wherein the first constant corresponds to the positive electrode of the battery, and wherein the method further comprises: calculating the first constant based on an open circuit potential at the positive electrode of the battery, a state of charge (SOC) at the positive electrode of the battery, and a maximum concentration of an intercalation metal of the battery at the positive electrode of the battery.
Facts
- Company
- Samsung (SAMSUNG ELECTRONICS CO., LTD.)
- Official title
- Method and system with battery parameter estimation for rest period
- Patent number
- US12761284B2
- Application number
- 18308541
- Filed
- Apr 27, 2023
- Granted
- Oct 13, 2026
- Inventors
- 2
- Claims
- 17
Classified under
G01R 31/388 Physics & computingG01R 31/3648 Physics & computingG01R 31/367 Physics & computingG01R 31/389 Physics & computingG01R 31/392 Physics & computingMore from Samsung in Batteries & energy
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Summaries are simplified from the filing’s own abstract and first claim. A patent filing is not a product announcement.
Patent data and drawings: U.S. Patent and Trademark Office (USPTO). Nebula is not affiliated with or endorsed by the USPTO.