研究和改进EDLC细胞的电容和DCESR测试方法
Xiong Xie1,2,3, Xu Li2,4, Junqiang Xu3
1School of Chemistry and Chemical Engineering, Chongqing University, Chongqing 400044, China.
Sensors (Basel, Switzerland)
|July 11, 2023
概括
电化学双层电容器 (EDLC) 电池的准确表征至关重要. 与现有的标准相比,一种新方法提供了更快,更准确的电容和内部电阻测量.
科学领域:
- 电化学 电化学 电化学
- 材料科学 材料科学 材料科学
- 电气工程 电气工程
背景情况:
- 电化学双层电容器 (EDLC) 是重要的储能设备.
- 对电容和直流等效系列内部电阻 (DCESR) 的准确表征对于 EDLC 在能源,运输和军事领域的应用至关重要.
研究的目的:
- 使用IEC 62391,Maxwell和QC/T741-2014标准对商业EDLC电池的电容和DCESR确定进行比较.
- 为准确和高效的EDLC表征提出一个改进的方法.
主要方法:
- 对三种标准测试程序 (IEC 62391,Maxwell,QC/T741-2014) 的比较分析.
- 开发和应用一种使用短时间恒压充电和放电中断技术的新方法.
主要成果:
- 现有标准存在重大缺点,包括大量的测试电流,长时间的测试,复杂的计算和不准确的DCESR结果.
- 提议的改进方法证明了高精度,低设备要求,以及电容和DCESR确定测试时间短.
结论:
- 与当前的行业标准相比,拟议的方法为特征EDLC电池提供了更好的替代方案.
- 这一进步有助于在各种应用中更好地设计,维护和监控EDLC.
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