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首页> 外文期刊>IEEE Aerospace and Electronic Systems Magazine >Effect of KOH concentration on LEO cycle life of IPV nickel-hydrogen flight cell-update II
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Effect of KOH concentration on LEO cycle life of IPV nickel-hydrogen flight cell-update II

机译：KOH浓度对IPV镍氢飞行器更新II LEO循环寿命的影响

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摘要

For update I see Energy and Environment: A Continuing Partnership, vol.3, American Nuclear Society (1991). An update of validation test results confirming the breakthrough in the low-Earth-orbit (LEO) cycle life of nickel-hydrogen cells containing 26% KOH electrolyte is presented. The results are part of an investigation of the effect of KOH concentration on life cycle. The cycle life of boiler plate cells was about 40000 LEO cycles compared to 3500 cycles for cells containing 31% KOH. The cycle regime was a stressful accelerated LEO, which consisted of a 27.5 min charge followed by a 17.5 min discharge (2*normal rate). The depth-of-discharge (DOD) was 80%. The cell temperature was maintained at 23 degrees C. Results for six 48-Ah recirculation design IPV nickel-hydrogen flight battery cells currently being evaluated to validate the above findings are reported. Three of the cells contain 26% KOH (test cells), and three contain 31% KOH (control cells). They are undergoing real-time LEO cycle life testing. The 31% KOH cells failed at cycles 3729, 4165, and 11355. One of the 26% KOH cells failed at cycle 15314. The other two 26% KOH cells have been cycled for over 16600 cycles without failure.
机译：有关最新情况，请参阅《能源与环境：持续的伙伴关系》，第3卷，美国核学会（1991年）。验证测试结果的更新，证实了含有26％KOH电解质的镍氢电池在低地球轨道（LEO）循环寿命方面的突破。这些结果是研究KOH浓度对生命周期的影响的一部分。锅炉平板电池的循环寿命约为40000 LEO循环，而含31％KOH的电池则为3500循环。循环过程是一个紧张的加速LEO，由27.5分钟的充能和17.5分钟的放电（2 *正常速率）组成。放电深度（DOD）为80％。电池温度保持在23摄氏度。报告了目前正在评估以验证上述发现的六个48Ah再循环设计IPV镍氢飞行电池的结果。其中三个单元包含26％的KOH（测试单元），三个单元包含31％的KOH（对照单元）。他们正在进行实时LEO循环寿命测试。 31％的KOH电池在3729、4165和11355周期失效。26％的KOH电池之一在15314周期失效。另外两个26％的KOH电池已循环16600多个周期而没有失效。

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