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The Development of an Integrated Battery Management System and Charger

Vo, Thomas V
http://rave.ohiolink.edu/etdc/view?acc_num=akron1406657703

Abstract Details

2014, Master of Science in Engineering, University of Akron, Electrical Engineering.
An investigation into battery management for lithium-based battery packs was performed. Out of the investigation of the various management/balancing methodologies came a proposed management methodology that is integrated with a charging system and utilizes cost-effective, lossy, bypass resistors for cell balancing. This integration allows the management system to cater the charging current to the needs of the battery pack and overcome the limitations of the lossy bypass on its own. To first investigate this concept, a LiFePO4 cell model was obtained. This was done using a cell discharging procedure and characterization process that provides a mathematical first-principles cell model. The obtained model was then used to simulate various pack configurations, battery management configurations, including the proposed management method. The results from these simulations demonstrated that the proposed management methodology balanced cell voltages within a battery pack in as little as a single charge cycle. To confirm this concept a manually hand-controlled experiment, consisting of voltmeter monitoring cell voltages, manual activation of lossy bypass resistors, and manual adjustments of charging current, was performed. The results from this experiment confirmed the ability to balance the cell voltages within a single cycle. Hardware and software was developed to automate the proposed management methodology. Data collected from the automated implementation was in agreement with the performed simulations and successfully demonstrated a functional automated version of the proposed integrated battery management system and charger.
Tom T. Hartley, Dr. (Advisor)
Seungdeog Choi, Dr. (Committee Member)
Yilmaz Sozer, Dr. (Committee Member)
251 p.
Electrical Engineering
battery management system; battery; battery pack; lithium; cell; bypass; passive bypass; cell equalization; cell balancing; cell model; battery model;

Recommended Citations

Citations

  • Vo, T. V. (2014). The Development of an Integrated Battery Management System and Charger [Master's thesis, University of Akron]. OhioLINK Electronic Theses and Dissertations Center. http://rave.ohiolink.edu/etdc/view?acc_num=akron1406657703

    APA Style (7th edition)

  • Vo, Thomas. The Development of an Integrated Battery Management System and Charger . 2014. University of Akron, Master's thesis. OhioLINK Electronic Theses and Dissertations Center, http://rave.ohiolink.edu/etdc/view?acc_num=akron1406657703.

    MLA Style (8th edition)

  • Vo, Thomas. "The Development of an Integrated Battery Management System and Charger ." Master's thesis, University of Akron, 2014. http://rave.ohiolink.edu/etdc/view?acc_num=akron1406657703

    Chicago Manual of Style (17th edition)

akron1406657703
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© 2014, all rights reserved.
This open access ETD is published by University of Akron and OhioLINK.
Release 3.2.12