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Failure Analysis of Some Toyota Prius Battery Packs and Potential for Recovery
Technical Paper
2013-01-2561
ISSN: 0148-7191, e-ISSN: 2688-3627
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English
Abstract
The Toyota Prius battery pack consists of 38 individual battery modules, each module contains 6 NiMH cells in series. This means that each pack contains 228 NiMH cells. Each cell has the potential to fail. This report investigates the mode of failure of Prius battery packs by first analysing a number of packs in the lab, and then road testing them in a Toyota Prius. The analysis of the battery packs show that some packs had aged “linearly”, that is in a balanced manner, such that the state of health of all modules remained similar. However, in other packs discrete modules had significantly different states of health. A pack that consists of cells that are matched in both state of health and state of charge delivers the best performance. The research also showed that the worst cell in the pack determines the overall pack performance. This was demonstrated by substituting reduced capacity or short-circuited modules into a functioning battery pack. A vehicle with a pack consisting of 37 2400 mAh battery modules and one 1200 mAh battery module was only able to drive 1.3 km in Electric Vehicle mode, as opposed to 2.6 km with a pack consisting of 38 2400 mAh battery modules.
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Leijen, P. and Scott, J., "Failure Analysis of Some Toyota Prius Battery Packs and Potential for Recovery," SAE Technical Paper 2013-01-2561, 2013, https://doi.org/10.4271/2013-01-2561.Also In
References
- Plett G. L. Recursive approximate weighted total least squares estimation of battery cell total capacity Journal of Power Sources 196 4 2319 2331 2011
- Li H. , Liao C. and Wang L. Research on State-of-Charge Estimation of Battery Pack Used on Hybrid Electric Vehicle IEEE 2009
- Guoliang W. , Rengui L. , Chunbo Z. and Chan C. State of Charge Estimation for NiMH Battery Based on Electromotive Force Method IEEE Vehicle Power and Propulsion Conference 3-5 2008
- Bundy K. , Karlsson M. , Lindbergh G. and Lundqvist A. An electrochemical impedance spectroscopy method for prediction of the state of charge of a nickel-metal hydride battery at open circuit and during discharge Journal of Power Sources 72 2 118 125 1998
- Buchmann I. Batteries in a Portable World second C. E. Inc., Ed., Cadex Electronics Inc. 2001
- Zhang L. AC impedance studies on sealed nickel metal hydride batteries over cycle life in analog and digital operations Electrochimica Acta 43 21-22 3333 3342 1998
- Leijen P. NIMH state of charge and state of health measurement, and the Prius battery system http://www.pjmldesign.co.nz/publications/pub1.pdf 2011
- Schneider E. L. , W. K. Jr. , Souza S. and Malfatti C. F. Assessment and reuse of secondary batteries cells Journal of Power Sources 189 2 1264 1269 2009
- Leijen P. Off-line NiMH Battery State of Charge and State of Health Measurement 2011
- Hu W. K. , Geng M. M. , Gao X. P. , Burchardt T. , Gong Z. X. , Noréus D. and Nakstad N. K. Effect of long-term overcharge and operated temperature on performance of rechargeable NiMH cells Journal of Power Sources 159 2 1478 1483 2006
- Cao J. and Emadi A. Batteries Need Electronics IEEE Industrial Electronics 5 1 2011
- Undeland T. M. and Robbins W. P. Power Electronics Converters, Applications, and Design John Wiley & sons, inc. 1989
- Toyota Toyota Prius Workshop manual 2001
- Windarko N. A. , Choi J. Ieee Hysteresis Modeling for Estimation of State-of-Charge in NiMH Battery Based on Improved Takacs Model Intelec 09 - 31st International Telecommunications Energy Conference New York Ieee 2009 598 603