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SamsungGranted patentBatteries & energyInterest 4/10

Samsung patents battery current adjustment using temperature and chemistry data

Patent drawing
Patent drawing from the official filing.

This patent describes a method for electronic devices to adjust how they measure battery current by accounting for internal chemical changes. It uses voltage, temperature, and current data to calculate corrections for differences in electrolyte concentration between the battery's positive and negative sides. These adjustments help create a more accurate model of the battery's internal state to control charging and discharging.

Why it mattersThis improves the accuracy of battery management systems, which can lead to better battery life estimates and safer charging in devices like phones and laptops.

In the filing’s own words

A method for adjusting a current of a battery includes obtaining one or more parameters of a battery including the current of the battery, a voltage and a temperature of the battery, determining a first correction parameter relating to a variation in current due to charging and discharging of the battery, based on at least a portion of the one or more parameters, determining a difference between an electrolyte concentration of an anode surface and an electrolyte concentration of a cathode surface of the battery, based on at least a portion of the one or more parameters, determining a temperature parameter based on the temperature of the battery, determining a second correction parameter relating to a temperature of the battery, based on the difference and the temperature parameter, and determining a correction value for the current of the battery based on the first correction parameter and the second correction parameter.

What exactly they claim (claim 1)

1. A method of adjusting a value of a current of a battery, performed by an electronic device, the method comprising: obtaining values of one or more basic parameters of a battery comprising the current of the battery, a voltage of the battery, and a temperature of the battery; determining a value of a first correction parameter relating to a variation in current due to charging and discharging of the battery, based on at least a portion of the value of the one or more basic parameters; determining a difference between an electrolyte concentration of an anode surface and an electrolyte concentration of a cathode surface of the battery, based on at least a portion of the values of the one or more basic parameters; determining a value of a temperature parameter based on the temperature of the battery; determining a value of a second correction parameter relating to a temperature of the battery, based on a variation of the difference and the value of the temperature parameter; determining a correction value of the current of the battery by adjusting an initial value of the current, based on the value of the first correction parameter and the value of the second correction parameter; applying the correction value to a battery model for estimating an internal state of the battery; and controlling the charging or discharging of the battery using internal state conditions defined based on the internal state of the battery.

Facts

Company
Samsung (SAMSUNG ELECTRONICS CO., LTD.)
Official title
Method and apparatus for adjusting value of current of battery
Patent number
US12768893B2
Application number
18297754
Filed
Apr 10, 2023
Granted
Oct 20, 2026
Inventors
3
Claims
19

Classified under

G01R 31/374 Physics & computingG01R 31/367 Physics & computingG01R 31/388 Physics & computing
Read the full filing (official PDF) ↗ Open in the Patent Tracker

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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.