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:
Nov. 22, 2016
Filed:
Mar. 03, 2014
Qnovo Inc., Newark, CA (US);
Dania Ghantous, Walnut Creek, CA (US);
Christina Peabody, Fremont, CA (US);
Nadim Maluf, Los Altos, CA (US);
Fred Berkowitz, Los Gatos, CA (US);
Miroslav Zmrzli, San Francisco, CA (US);
David Bruce Koons, Los Gatos, CA (US);
Qnovo Inc., Newark, CA (US);
Abstract
A system and technique for determining a state of charge (SOC) of a battery having at least two terminals and at least one silicon-based anode, or other anode materials exhibiting hysteretic voltage-SOC dependence such as tin-based anodes (whether partial or full dependence). The system and technique determines whether the battery is in a charge mode or a discharge mode of operation, measures a terminal voltage of the battery, and determines the SOC of the battery using (a) a first predetermined relationship between (i) the terminal voltage of the battery and (ii) the SOC of the battery when the battery is in a charge mode, and (b) a second predetermined relationship between (i) the terminal voltage of the battery and (ii) the SOC of the battery when the battery is in a discharge mode. In one embodiment, the terminal voltage is an equilibrium voltage of the battery.