The uniformity of the VRLA battery

In the field such as telecommunications, UPS, finance, electric power and so on, the VRLA batteries are usually used in a series connection, but when there exists a faulty or several faulty batteries, the performance/life of the battery bank will deteriorate seriously to endanger the safety of power supply. After inspecting and analyzing the problem occurred of the battery backup time shortage in the actual site, we found that almost all the problems are due to the faulty battery existance in spite of the other batteries being still healthy. In this paper the author has studied some indicators commonly used to describe the uniformity of the VRLA battery, but found that these indicators only concern the initial state of the battery when they start to use rather than the internal factors to affect the uniformity of the VRLA battery really. When the battery is put into operation, due to the complexity and the diversity of the environment battery working, the same initial state of the VRLA battery cannot make sure the same performance/life throughout the lifespan. We can use the fishbone diagram method, which is a comprehensive analysis of various factors affecting the uniformity of the VRLA battery, from six aspects, 5M1E, namely Man, Machine, Material, Method, Measurement and Environment, to find out the key influencing factors and improve them. Furthermore, by means of the wireless distributed online real-time monitoring technology, we can monitor, even remote monitor the state of the VRLA battery, detect the faulty battery accurately, then replace it promptly to ensure the safety of power supply for the network.