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http://dx.doi.org/10.4313/JKEM.2017.30.6.393

Performance Estimation Based on 4D Lookup Table Interpolating and Unit Cell Discharge Tests for Thermal Battery  

Park, Byeong June (The 4th R&D Institute, Agency for Defense Development)
Kim, Ji Youn (The 4th R&D Institute, Agency for Defense Development)
Ha, Sang Hyeon (The 4th R&D Institute, Agency for Defense Development)
Cho, Jang Hyeon (The 4th R&D Institute, Agency for Defense Development)
Publication Information
Journal of the Korean Institute of Electrical and Electronic Material Engineers / v.30, no.6, 2017 , pp. 393-400 More about this Journal
Abstract
For comparison to the Li-ion battery, evaluating a thermal battery must consider additional variables. The first one is the temperature difference between the battery and its unit cell. Thermal batteries and their unit cells have a temperature difference that is caused by the thermal battery activation mechanism and its shape. The second variable is the electrochemical reaction steps. Most Li-ion batteries have a constant electrochemical reaction at the electrode, and battery voltage is affected when the concentration of Li ions is changed. However, a thermal battery has several steps in its electrochemical reaction, and each step has a different potential. In this study, we used unit cell discharge tests based on interpolating a 4D lookup table to estimate the performance of a thermal battery. From the test results, we derived an estimation algorithm by interpolating the table, which is queried from specified profile groups. As a result, we found less than a 5 percent difference between estimation and experiment at the 1.3 V cut-off time.
Keywords
Lookup table; Battery; Performance; Estimation; Model; Thermal battery; Unit cell; Interpolating;
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Times Cited By KSCI : 2  (Citation Analysis)
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