| With the rapid development of communications industry, communications network scale and the quantity of the high frequency switching power and UPS and etc. are expanding accordingly, which has triggered the storage batteries to be widely applied.Valve regulated sealed lead-acid batteries win the communications power system’s first choice by its advantages of small volume, stable voltage, pollution-free, high discharge performance, less maintenance work and other characters. But in the practical use, due to various reasons, especially the lack of grasping the performance of the storage battery and the lack of the rational maintenance methods that give rise to the loss of storage batteries’ life. According to our analysis of the storage batteries’ evaluation, we can accurately work out the duration time of them, alarm without delay for the abnormal data, put forward the composite repairing methods based on degraded storage batteries and realize the reasonable maintenance and auto-restoration of the storage batteries.Besides, we may also postpone their life-span, improve the normal operation capability of the communications bases and reduce the maintenance cost of the CDMA bases.The main mission and innovation points reflect in the following:1. Analyzing the external factors that affect the CDMA bases storage batteries’ life-span directing at the present maintenance situations and putting forward the storage batteries’ life-span analysis and prediction and the composite restorative methods. Use batteries’ operating parameters and mathematical application algorithms evaluate the electrical properties of the batteries. According to the assessment results to infer reasonable charge and discharge cycles. As well as automatically repair the deterioration batteries to extend the service life.2. Putting forward the cumulative cruising ability prediction model combining with the traditional ampere-hour integral method and the bases storage batteries’ practical operating conditions to provide the communication operators with the technical support for them to accurately grasp the bases cruising ability. The model takes into account the effects of temperature and current, can accurately predict life of lead-acid batteries. For telecommunications operators to accurately grasp the dynamic situation of CDMA bases provides a strong of support and assurance.3. Putting forward the algorithms of storage batteries’ performance life-span prediction model based on the base station batteries’ operating conditions by analyzing the surplus capacity, ambient temperature, depth of discharge and the effects of the floating charge voltage on the batteries’ operating conditions. Prediction model can be realized the calculation of the actual remaining batteries’ capacity, float voltage evaluation,assessment of the depth of discharge detection and ambient temperature. Based on four factors’ scores and the right proposed life prediction mathematical model.4.Analysing the Battery Vulcanization phenomenon and its traditional repairing methods. Corresponding repairing methods are adopted directing at the different vulcanized battery caused by different reasons. And putting forward a complete automatic pulse repairing process to the serious vulcanized batteries.5.Application programming technology has realized the running of this system and deve loped several practical systems, including the performance analysis of storage battery, th e reminding of abnormal data and auto recovery.The research results of the thesis have been applied in the China Unicom base station。It proved that the system can effectively improve the operators on the lead-acid battery maintenance, prolonging the service life of the storage phrase cycling. |
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