/Patent Tracker
SonyPatent applicationChips & hardwareInterest 4/10

Sony patents battery check that spots fake cells by voltage

Sony has filed a patent for a device that checks if a battery cell is genuine or counterfeit. It works by measuring the voltage drop when the battery is not in use and comparing it to expected values.

Why it mattersThis could help manufacturers or repair shops quickly identify fake batteries, which are a common safety and performance issue in electronics.

In the filing’s own words

An apparatus according to the present technology includes a specification section and a determination section. The specification section specifies a difference in voltage on an open circuit voltage (OCV) curve of a battery cell. The determination section determines whether the battery cell is authentic or non-authentic, on the basis of the difference in voltage.

What exactly they claim (claim 1)

1. An apparatus, comprising: a specification section that specifies a difference in voltage on an open circuit voltage (OCV) curve of a battery cell; and a determination section that determines whether the battery cell is authentic or non-authentic, on a basis of the difference in voltage.

Facts

Company
Sony (SONY GROUP CORPORATION)
Official title
APPARATUS, BATTERY PACK, AND BATTERY-CELL DETERMINATION METHOD
Publication number
US20260279933A1
Application number
19471834
Filed
Apr 1, 2024
Published
Sep 17, 2026
Inventors
7
Claims
10

Classified under

H01M 10/4285 Electricity & electronicsG01R 19/16576 Physics & computingG01R 31/388 Physics & computingG01R 31/389 Physics & computingG01R 31/396 Physics & computingH01M 4/133 Electricity & electronics
Read the full filing (official PDF) ↗ Open in the Patent Tracker

More from Sony in Chips & hardware

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.