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. 04, 2022
Filed:
Apr. 17, 2018
The Regents of the University of Michigan;
Kang G. Shin, Ann Arbor, MI (US);
Liang He, Ann Arbor, MI (US);
The Regents of the University of Michigan, Ann Arbor, MI (US);
Abstract
Mobile devices are only as useful as their battery lasts. Unfortunately, the operation and life of a mobile device's battery degrade over time and usage. The state-of-health (SoH) of batteries quantifies their degradation, but mobile devices' support for its estimation is very poor due mainly to the limited hardware and dynamic usage patterns, causing various problems such as shutting off the devices unexpectedly. To remedy this lack of support, a low-cost user-level SoH estimation service is developed for mobile devices based only on their battery voltage, which is already available on all commodity mobile devices. The design of the estimation service is inspired by an empirical observation that the relaxing voltages of a device battery fingerprint its SoH, and is steered by extensive measurements with 13 batteries used for various devices, such as Nexus 6P, Nexus 5X, Xperia Z5, Galaxy S3, iPhone 6 Plus, etc.