Float life verification of a high purity VRLA battery system

F. Fleming, Lei Gao
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Abstract

This paper examines float life verification of commercially available high purity VRLA batteries in light of this recent concern regarding negative electrode capacity loss and includes data from real-time room temperature float testing which has been ongoing for 10 years. The condition of the negative electrode, from both new and real-time aged product, has been carefully examined by both electrochemical measurements of the product and also by analyzing the morphology and crystallography of the plates. The condition of the positive grid has also been examined to determine the extent of corrosion. In conclusion, this paper demonstrates that by using a high purity VRLA technology, which has been commercially available for 25 years, it is possible to far exceed 2 years of reliable service. Properly designed batteries using this technology have been proven to deliver greater than 13 years in real-time float service.
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高纯度VRLA电池系统浮子寿命验证
鉴于最近对负极容量损失的关注,本文研究了商用高纯度VRLA电池的浮子寿命验证,并包括了持续10年的实时室温浮子测试数据。通过对产品的电化学测量和分析板的形貌和晶体学,对新产品和实时老化产品的负极状况进行了仔细的检查。还检查了正栅极的状况,以确定腐蚀的程度。总之,本文表明,通过使用高纯度的VRLA技术,该技术已经商业化了25年,有可能远远超过2年的可靠服务。使用该技术设计合理的电池已被证明可提供超过13年的实时浮子服务。
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