Quantifying current density in battery cells

CDO 2开发了CDA-16电池电流密度分析仪，作为台式电池分析和测试系统。这是通过使用我们的16 cm x 16 cm传感器阵列来生成被测电池的电流密度图像。这使得电化学家和其他电池研究人员能够可视化电池中电流的空间分布。这在开发和评估电池设计以确保它们按预期运行以及电池退化的研究中是有用的。这也有利于质量控制，通过样品测试确保一致性。本项目的目的是提供定量信息，以验证CDO 2使用的算法，从而从传感器测量值推断电池的电流密度分布。为了提供具有准确已知的电流密度分布的定量参考，将创建代表测试中的典型电池的物理伪影。建议的人工制品将由NPL的仪器组设计，并将使用CDO 2的电子制造设施进行生产。除了在项目期间提供受试系统的量化校准外，电池物理人工制品将用于未来的产品校准和测试。

CDO2 has developed the CDA-16 battery current density analyser as a bench-top battery cell analysis and testing system. This works by using our 16cm x 16cm sensor array to generate a current density image of a cell under test. This allows electrochemists and other battery researchers to visualise the spatial distribution of the current flow in a battery cell. This is useful in developing and assessing cell designs to ensure that they are operating as expected, as well as for investigation of cell degradation. It is also of benefit for quality control, ensuring consistency through sample testing.The aim of this project is to provide quantitative information to verify the algorithm used by CDO2 to infer the current density distribution of a battery from sensor measurements. In order to provide a quantitative reference with an accurately known current density profile, a physical artefact will be created that is representative of a typical battery under test. The proposed artefact will be designed by the instrumentation group at NPL and production will take place using the electronics manufacturing facilities at CDO2\.As well as providing a quantified calibration of the system under test during the project, the battery physical artefact will be used in future product calibration and testing.