The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jan. 06, 2026
Filed:
Sep. 16, 2019
Techtronic Cordless Gp, Anderson, SC (US);
TECHTRONIC CORDLESS GP, Anderson, SC (US);
Abstract
In a battery charging system (), a charger () and a smart battery () enhance safety in recharging a cell () in the smart battery () by a power supply () of the charger (). The smart battery () is communicable with the charger (). If a communication failure occurs, the charger () disconnects the power supply () from the smart battery (). The smart battery () and the charger () share the same symmetric encryption key for encrypting and decrypting message data, allowing one party to determine if the other part is an authentic one. When the smart battery () finds that the charger () is not authentic, or vice versa, the power supply () and the cell () are disconnected. When the smart battery () finds that a no-charging condition occurs due to abnormality in the cell (), the smart battery () requests the charger () to stop charging, and also disconnects the cell () from the charger () even if the charger () fails to stop charging the smart battery ().