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How Can Current Measurement Offset Make Coulombic Efficiency Appear to Exceed 100%?
One common reason that measured coulombic efficiency…
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Accuracy and Precision, Part 1: OverviewThe difference between accuracy and precision in battery testing, and why both matter.How to Measure DC Internal Resistance (DCIR)How MITS measures DC internal resistance with the pulse method, and how to set the pulse.How to Run an HPPC Test (Hybrid Pulse Power Characterization)The DOE pulse profile, resistance and pulse power equations, cycler requirements, and a worked 18650 test on the HPS.How to Use Formulas and Variables in MITS SchedulesControl a test with formulas and variables instead of fixed values.
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How Can Current Measurement Offset Make Coulombic Efficiency Appear to Exceed 100%?
One common reason that measured coulombic efficiency (CE) can appear to exceed 100% is a current measurement offset. In this example, assume the cycler has a constant negative current offset e. This means the measured current is lower than the true current by e throughout the test. To simplify the analysis, assume an ideal battery […]
准确性和精确性：精确度的影响
我们之前的一篇文章探讨了测量精度方面的影响。在本文中，我们将重点转移到电池测试仪精度对电池研究的影响。在许多研究应用中，dV/dt 和 dQ/dV 等参数被广泛使用。这些测量的可靠性在很大程度上取决于 [...] 的精度。
准确性和精确性：电池测试仪准确性的影响
在上一篇文章中，我们介绍了准确度和精度的概念，并简要概述了它们对电池测试的影响。在本文中，我们将深入探讨准确度的影响。我们将以容量测量和库仑效率测量为例来分析其影响。正如我们所…
准确度和精度：概述
1. 引言 电池测试本质上是一项测量任务。无论是评估循环寿命、库仑效率、电压响应还是退化机制，结论的质量都取决于数据的质量。在任何电池测试系统中，有两个概念决定着数据的完整性：准确性和精确性。尽管它们经常被一起提及，但它们描述的是测量性能的不同方面。 […]
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