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International Conference on Electronics, Information and Communication Engineering (EICE 2012)

Garry Lee
Garry Lee
Information Engineering Research Institute
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The thermal behavior of Ni/MH power battery during charging was studied in this paper by using a thermal infrared imager. Thermal images at the end of regular charge and overcharge were obtained as well as the temperature rise rates during the two stages of charge. A line on battery surface from negative electrode to positive electrode was determined to study the temperature gradient. Thermal behavior during the stage of overcharge was analyzed. Results show that overcharge and increased charging rate will lead to various heat zones of different temperature ranges arise on battery surface. Increasing charging rate and overcharging will result in the increased temperature gradient on battery surface and the temperature rise rate during overcharging is far more than the value during charging regularly.

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