09026347 is referenced by 14 patents and cites 19 patents.

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.

Title
Smart electric vehicle (EV) charging and grid integration apparatus and methods
Application Number
13/693747
Publication Number
9026347 (B2)
Application Date
December 4, 2012
Publication Date
May 5, 2015
Inventor
Yiyu Shi
Rolla
MO, US
Bingjun Xiao
Los Angeles
CA, US
Lei He
Irvine
CA, US
Ching Yen Chung
New Taipei
TW
Omar Sheikh
Valencia
CA, US
Chi Cheng Chu
Laguna Beach
CA, US
Shivanand Prabhu
Los Angeles
CA, US
Siddhartha Mal
Santa Monica
CA, US
Rajit Gadh
Los Angeles
CA, US
Agent
John P O Banion
Assignee
The Regents of the University of California
CA, US
IPC
G01R 31/36
B60L 11/18
H02J 3/14
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