What are the problems of the battery in the operation of the backup power supply

1) The battery life cannot meet the design requirements. In practice, the battery will be severely degraded in three years, and there are very few batteries that have been used for more than 5 years. The reason is that the battery is not effectively and reasonably managed and maintained during use, which causes the battery to deteriorate in the early stage, and the backward battery is not found in time, resulting in accumulation and aggravation of the deterioration, leading to the premature scrapping of the battery. 2) The operation and performance status of the battery is unknown. If there is a backward battery in the battery pack, a certain depth of discharge and charge cycle can be used to reduce the difference of backwardness to a certain extent. However, due to the lack of good management methods, the internal performance parameters of the battery, such as the internal resistance of the battery and the current remaining capacity, cannot be known very clearly, so the corresponding measures cannot be implemented. 3) Regarding the single battery, the reliability of the charging mechanism should be perfect. Because the current charging mechanism of the domestic DC system is not very perfect, there is a voltage drift in practice, and the battery is in a floating state for a long time. If the floating voltage deviates from normal The range of the battery will cause overcharge or undercharge of the battery. Long-term overcharge or undercharge has a great impact on the performance of the battery. 4) Imbalance between the single cells At present, the battery pack is composed of a large number of single cells. In actual operation, there are large differences in the charging voltage and internal resistance between the single cells, especially under floating charge. This imbalance is very serious. Individual backward batteries are not fully charged. If they are not discovered and resolved in time, this backwardness will be exacerbated. Repeatedly, this imbalance will aggravate, resulting in the failure of backward batteries, which will cause the premature loss of the capacity of the entire battery pack. 5) The maintenance of unattended sites lacks good management and monitoring methods. For many unattended sites, due to the lack of network management and monitoring methods, the maintenance of batteries is weaker, especially regarding the operation and performance of the batteries. know it clearly. A large amount of maintenance and management work is carried out manually, and the sorting and decomposition of data requires strong professional knowledge of maintenance personnel. 6) The end of life of the battery cannot be judged in advance and the replacement of the battery lacks scientific basis. Based on the end of the life of the battery, we hope to make a judgment in advance to gain time for the replacement of the battery. However, at present, there is no reliable method for the termination of battery life, and it is only based on years of relevant experience. Therefore, in practice, the end of life of the battery is often found in the discharge after the discharge capacity of the battery is lower than the minimum requirement. Disclaimer: Some pictures and content of articles published on this site are from the Internet. If there is any infringement, please contact to delete. Previous: What are the specifications and models of cylindrical lithium batteries