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World Electric Vehicle Journal is published by MDPI from Volume 9 issue 1 (2018). Articles in this Issue were published by The World Electric Vehicle Association (WEVA) and its member the European Association for e-Mobility (AVERE), the Electric Drive Transportation Association (EDTA), and the Electric Vehicle Association of Asia Pacific (EVAAP). They are hosted by MDPI on mdpi.com as a courtesy and upon agreement with AVERE.
Open AccessArticle

Safety Management for Electric Vehicle Batteries in a Tropic Environment

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TUM CREATE Ltd., 62 Nanyang Drive, Blk N1.2, Level 1-28/29, Singapore 637459
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Technical University of Munich (TUM), Institute for Electrical Energy Storage Technology
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Author to whom correspondence should be addressed.
World Electr. Veh. J. 2012, 5(2), 394-404; https://doi.org/10.3390/wevj5020394
Published: 29 June 2012
To ensure the safety of a battery system certain measures can be employed. Monitoring the actual battery temperature is crucial to guarantee a safe use of the system while an optimized cooling system for the battery pack helps to improve the liability, prevent safety shut-os and extend the battery's lifetime. Additionally, possibilities to monitor the state of health of the battery on a longer time scale are necessary to avoid over-stretching the battery's capability of storing energy on the one hand and to reduce investment costs on the other hand. This paper deals with dierent approaches to handle the battery temperature, especially under challenging tropical outside conditions. A temperature distribution model is developed and evaluated using combined data from a sensor matrix and an infrared camera. This method is used for real-time temperature measurements to investigate and monitor the temperature distribution on pouch cells. The simulation of dierent cooling systems is presented to show the need of a steady temperature distribution within a battery pack. The goal is to avoid excessive load on certain cells, which has a high impact on a safe use of the pack and reduces lifetime signicantly. Finally, an approach to characterize the battery thermodynamically is presented. This is expected to be a useful tool to measure and monitor the state of health of a battery and rst investigations are shown for dierent cell chemistries, performed on commercially available full cells.
Keywords: battery; battery model; cooling; safety; thermal management battery; battery model; cooling; safety; thermal management
MDPI and ACS Style

Martiny, N.; Osswald, P.; Huber, C.; Jossen, A. Safety Management for Electric Vehicle Batteries in a Tropic Environment. World Electr. Veh. J. 2012, 5, 394-404.

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