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:
May. 05, 2015
Filed:
Dec. 04, 2012
The Regents of the University of California, Oakland, CA (US);
Rajit Gadh, Los Angeles, CA (US);
Siddhartha Mal, Santa Monica, CA (US);
Shivanand Prabhu, Los Angeles, CA (US);
Chi-Cheng Chu, Laguna Beach, CA (US);
Omar Sheikh, Valencia, CA (US);
Ching-Yen Chung, New Taipei, TW;
Lei He, Irvine, CA (US);
Bingjun Xiao, Los Angeles, CA (US);
Yiyu Shi, Rolla, MO (US);
The Regents of the University of California, Oakland, CA (US);
Abstract
An expert system manages a power grid wherein charging stations are connected to the power grid, with electric vehicles connected to the charging stations, whereby the expert system selectively backfills power from connected electric vehicles to the power grid through a grid tie inverter (if present) within the charging stations. In more traditional usage, the expert system allows for electric vehicle charging, coupled with user preferences as to charge time, charge cost, and charging station capabilities, without exceeding the power grid capacity at any point. A robust yet accurate state of charge (SOC) calculation method is also presented, whereby initially an open circuit voltage (OCV) based on sampled battery voltages and currents is calculated, and then the SOC is obtained based on a mapping between a previously measured reference OCV (ROCV) and SOC. The OCV-SOC calculation method accommodates likely any battery type with any current profile.