| The fast development of communication, electric, and commerce asks for more reliable and safer power sources. UPS, as well known as an important power supply device, is widely used in these years. It is very important to improve performance of Batteries which the important part of UPS.This paper analyses various working conditions of UPS, and puts forward the feasible equilibrium strategy of Lead-acid battery group. This strategy is tested and verified in experiments.First, analyses failure forms and failure causes of lead-acid battery according to characteristics of the UPS lead-acid batteries. Battery inconsistency is a main reason to the failure form of battery so the performance, cause and effect of battery inconsistency are analyzed.Second, in response to this question the batteries need to be equalized. After comparing current voltage equalization methods home and aboard, proposes appropriate detection and equalization method regarding UPS Lead-acid batteries.The third, the designed control system contains two parts:the hardware design and the software design. The hardware design contains the battery state detecting system and the charging equalization system. In the software design, put forward a better equilibrium strategy, which effectively avoids the frequently switching power loss during automatic balance.Finally, test the system in various working conditions which might meet in UPS. Achieve the aim of single cell voltage automatic cycle detection and equalization.UPS batteries charging equilibrium strategy is aimed at improving the efficiency of battery and the reliability of the system, prolonging the battery's lifetime, reducing operating costs and lessening environmental pollution. |
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