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Quick Drop Battery System for Electric Passenger Cars
Technical Paper
2017-01-2453
ISSN: 0148-7191, e-ISSN: 2688-3627
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English
Abstract
Quick drop battery system was the core components of the electric vehicles, the reliability and compatibility of quick drop battery system was directly related to the popularization and application of electric vehicles. In this article, a split type battery management system and a split type high voltage architecture was used to achieve better charging compatibility. Meanwhile the number of fast switching connector’s pin is reduced and the plug life was prolonged to more than 10000 times by using floating structure. For battery management system (BMS), the state of charge (SOC) estimation was based on dynamic voltage correction, and make estimation accuracy reach to less than 5%. Rotary slot limit and fast locking mechanism had been designed for the first time and the precision of battery system assembling could control within 3mm, hence the floating structure’s damage could be reduced and the mechanical life could be enhanced. The cumulative mileage of vehicles equipped with this battery system had been over 24 million km, while the longest single mileage was over120, 000 km. The reliability of the system and the switching time within 3 minutes had reached the leading domestic level.
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Citation
Liu, S., Pan, L., Jiang, X., Wang, Y. et al., "Quick Drop Battery System for Electric Passenger Cars," SAE Technical Paper 2017-01-2453, 2017, https://doi.org/10.4271/2017-01-2453.Also In
References
- Onda K. , Ohshima T. , Nakayama M. , Fukuda K. and Araki T. Thermal behavior of small lithium-ion battery during rapid charge and discharge cycles Journal of Power Sources 158 535 542 2006
- Vetter J. , Novák P. , Wagner M. R. , Veit C. , Möller K. C. , Besenhard J. O. , Winter M. , Wohlfahrt-Mehrens M. , Vogler C. and Hammouche A. Ageing mechanisms in lithium-ion batteries Journal of Power Sources 147 269 281 2005
- Li J. , Murphy E. , Winnick J. , Kohl PA Studies on the cycle life of commercial lithium ion batteries during rapid charge-discharge cycling Journal of Power Sources 102 294 301 2001
- Jun Wang A battery locking mechanism China Patent. 201210285209.8/ 2012-12-12
- XJ ELECTRIC CO.,LTD. Connector Floating Mount China Patent. 201120180396.4/ 2012-01-18