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:
Jun. 09, 2015
Filed:
Dec. 09, 2011
Jason Allen Wortham, Fremont, CA (US);
Joseph Brian Vanden Wymelenberg, Los Altos, CA (US);
Kin Keung Lau, Redwood City, CA (US);
Jason Allen Wortham, Fremont, CA (US);
Joseph Brian Vanden Wymelenberg, Los Altos, CA (US);
Kin Keung Lau, Redwood City, CA (US);
Maxim Integrated Products, Inc., San Jose, CA (US);
Abstract
Negative peak voltage detection for battery end of life estimations in fuel gauging is disclosed. Battery powered devices such cell phones and laptop computers create some noise in the form of negative excursions from the average output voltage of the battery which can cause the battery powered device to stop functioning. By negative peak detection relative to the average battery voltage, the end of life or discharged voltage condition can be altered in response to the negative peaks to obtain the maximum battery life without risk of the device inadvertently shutting down. Average output voltage of the battery may be taken as an estimated open circuit voltage or some other battery voltage. Various embodiments are disclosed.