bullet Sensors & Transducers Journal

    (ISSN: 2306-8515, e-ISSN 1726-5479)


2008 e-Impact Factor

25 Top Downloaded Articles

Best Selling Articles 2012

Journal Subscription 2014

Editorial Calendar

Submit an Article

Editorial Board

Current Issue

S&T journal's cover

Sensors & Transducers Journal 2011

Sensors & Transducers Journal 2010

Sensors & Transducers Journal 2009

Sensors & Transducers Journal 2008

Sensors & Transducers Journal 2007

2000-2002 S&T e-Digest Contents

2003 S&T e-Digest Contents

2004 S&T e-Digest Contents

2005 S&T e-Digest Contents

2006 S&T e-Digest Contents


Best Articles 2011




Vol. 169, Issue 4, April 2014, pp. 140-144




SOC Estimation of Power Battery Design on Constant-current Discharge

* Zeng Zhigang, Zhao Zhenxing, Li Yanping

Hunan Institute of Engineering, Xiangtan, 411101, China
* Tel.: (86) 13100327971, fax: (86) 073158688933

* E-mail: 12484785@qq.com



Received: 23 January 2014 Accepted: 7 March 2014 Published: 30 April 2014

Digital Sensors and Sensor Sysstems


Abstract: This paper takes the electric carís power battery (VRLA battery cell) as the research object, for real-time monitoring problem of power battery's state of charge (SOC) and remaining time, The system adopts micro control unit (MCU) 89S51 and AD974 to control battery discharge in constant current, Through the measurement of a periodic, get Series of working voltage, using phase-slope calculation method at this time calculating the battery's SOC and remaining time. Through the experiment, this estimation method proved the feasibility of the dynamic working point can be mapped to the static working point, and the largest relative error is no more than 7 %. For further improving the measurement accuracy and reducing error, Through the software can realize appropriate correction and compensation of temperature, aging and other interference factors. Error analysis results show that this method has small error, high measurement accuracy.


Keywords: Constant-current discharge, Real-time voltage, SOC estimation, Power battery.


Acrobat reader logo Click <here> or title of paper to download the full pages article in pdf format



Subscribe the full-page Sensors & Transducers journal in print (paper) or pdf formats

(shipping cost by standard mail for paper version is included)

(25 % discount for IFSA Members)




Alternatively we accept a money transfer to our bank account. Please contact for details: sales@sensorsportal.com



Download <here> the Library Journal Recommendation Form






1999 - 2014 Copyright ©, International Frequency Sensor Association (IFSA) Publishing, S.L. All Rights Reserved.

Home - News - Links - Archives - Tools - Voltage-to-Frequency Converters - Standardization - Patents - Marketplace - Projects - Wish List - e-Shop - Sensor Jobs - Membership - Videos - Publishing - Site Map - Subscribe - Search

 Members Area -Sensors Portal -Training Courses - S&T Digest - For advertisers - Bookstore - Forums - Polls - Submit Press Release - Submit White Paper - Testimonies - Twitter - Facebook - LinkedIn