基于低频噪声检测锂亚电池可靠性的研究

Research on Reliability of Lithium Battery Based on Low-Frequency Noise Measurements

为对锂亚电池进行快速有效的可靠性性能研究,将试验前及试验18个月后的锂亚电池采用低频噪声进行检测,检测结果表明1Hz频率下噪声频谱幅值出现1个数量级~5个数量级的变化,比容量测试更能无损反应出锂亚电池的当前性能情况,且基于低频噪声检测锂亚电池的可靠性研究,具有重要的实用价值。

In order to study the fast and effective reliability performance of lithium batteries,the lithium batteries were tested with low frequency noise before and after the test for 18 months.The test results show that the noise spectrum amplitude changes by 1-5 orders of magnitude at 1 Hz frequency,which can reflect the current performance of lithium batteries more nondestructively than capacity test,and the reliability research of lithium batteries based on low frequency noise detection has important practical significance.