Practical Current Distribution Measurement Systems for Lead Cells
Practical Current Distribution Measurement Systems for Lead Cells
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DOI：
10.1109/tim.2018.2876016
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发表时间：
2019-09
影响因子：
5.6
通讯作者：
H. Harrison;D. Stone;James E. Green
中科院分区：
文献类型：
--
作者：
H. Harrison;D. Stone;James E. Green
本文用两种方法估算了一个实验铅蓄电池的电流分布，并对结果进行了比较。使用我们的磁层析成像系统获得非侵入性测量，该系统由磁传感器阵列和专门适用于铅电池的求解器算法组成。通过与本文报道的一种新的侵入式测量仪器的数据进行比较，验证了这种磁层析成像系统。这种新的仪器是一个铁芯电流传感器阵列浸没在电池电解质，提供了一个直接的空间和时间分辨测量的离子电流在铅电池。绘制的技术和数据之间的比较。新的流通式内部传感器阵列是专门为此应用而设计的，并代表了文献中报道的类似系统的改进。此外，实验装置的一些辅助功能的设计，使有用的磁性测量，通过最大限度地减少设置的复杂性，从而解释数据所需的模型的复杂性。一个典型的汽车铅电池在低充电状态和疲劳条件下工作的示例结果，以证明这两个测量系统产生空间和时间分辨的电流分布图像的能力。对这些方法进行了评价，并对今后的工作提出了建议。
In this paper, the current distribution of an experimental lead cell is estimated using two methods and the results are compared. Noninvasive measurements are obtained using our magnetic tomography system, consisting of an array of magnetic sensors and a solver algorithm that is specially adapted for application to lead cells. Verification of this magnetic tomography system is achieved by comparing the results with data from a new invasive measurement instrument also reported in this paper. This new instrument is an array of ferrous cored current transducers submerged in the cell electrolyte, providing a direct spatially and temporally resolved measurement of the ionic current in a lead cell. Comparisons between the techniques and data are drawn. The new flowthrough internal sensor array has been designed specifically for this application and represents an improvement over a similar system reported in the literature. In addition, some auxiliary features of the experimental setup are designed to enable useful magnetic measurements to be taken by minimizing the complexity of the setup, and therefore the complexity of the models needed to interpret the data. Example results are presented for a typical automotive lead cell operating at a low state of charge and in a fatigued condition, to demonstrate the ability of both measurement systems to produce spatially and temporally resolved images of current distribution. The methods are evaluated, and the future work is recommended.