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Use of ultrasound for estimating state of charge and state of health in lithium-ion batteries.

使用超声波估计锂离子电池的充电状态和健康状态。

基本信息

批准号：
1949045
负责人：
金额：
--
依托单位：
University of Sheffield
依托单位国家：
英国
项目类别：
Studentship
财政年份：
2017
资助国家：
英国
起止时间：
2017 至无数据
项目状态：
已结题

来源：
https://gtr.ukri.org/projects?ref=studentship-1949045
关键词：
Use ultrasound estimating state charge

项目摘要

As a battery goes through charge and discharge cycles, lithium-ions are transferred between the anode and cathode layers causing a change the density distribution of the cell. The aim of this work is to look into the use of ultrasound to track these changes in density with the intention of gaining state of charge and state of charge of health information that could be utilised in a battery management system. Briefly. Change in density distribution using ultrasound has been proven to work as a concept in literature previously and has been successfully recreated in preliminary tests. A particular aim of this work is to gain as much information as possible from responses to ultrasound pulses such that a collection of samples have the possibility of providing useful battery diagnostic information. Regardless of the history, manufacture and condition of the cell. Part of this work is to explore the changing of surface texture in the electrodes as they age. This could provide critical state of health information with the batteries ability to accept charge. Battery management systems are a large and varied area of current research. Ultrasound is a relatively small area within this field. The benefits of this technique are due to the non-invasive and non-destructive nature of ultrasound explorations. Information about a closed cell can be obtained using this method that can provide real time data for analysis. Much of the current state of battery management is based on estimation techniques and as such, more accurate methods are sought.Batteries are becoming more popular in high power applications such as electrical vehicles and aerospace applications. This demands the safe use of batteries and accurate battery management systems become critical for safe and efficient usage.

当电池经历充电和放电循环时，锂离子在阳极层和阴极层之间转移，导致电池的密度分布发生变化。这项工作的目的是研究使用超声波来跟踪这些密度变化，目的是获得可在电池管理系统中使用的充电状态和健康信息的充电状态。简要地。使用超声波改变密度分布已被证明是先前文献中的一个概念，并已在初步测试中成功重现。这项工作的一个具体目标是从超声波脉冲的响应中获得尽可能多的信息，以便样本集合有可能提供有用的电池诊断信息。无论电池的历史、制造和状况如何。这项工作的一部分是探索电极随着老化而表面纹理的变化。这可以提供关键的健康状态信息以及电池接受充电的能力。电池管理系统是当前研究的一个庞大且多样化的领域。超声波是该领域中相对较小的领域。该技术的优势在于超声探查的非侵入性和非破坏性。使用这种方法可以获得有关闭合单元的信息，该方法可以为分析提供实时数据。当前的电池管理状态大部分基于估计技术，因此需要寻求更准确的方法。电池在电动汽车和航空航天应用等高功率应用中变得越来越流行。这就要求电池的安全使用，准确的电池管理系统对于安全、高效的使用至关重要。