Patent ID: 8340934
Filing Date: 2012-12-25
Classification: G01R,H01M,Y02E

Abstract:
1. A method of conducting performance analysis of a valve-regulated lead-acid (VRLA) battery in a battery set of two or more VRLA batteries, comprising the steps of: consecutively gathering float charge voltage variables of the VRLA battery through a measurement device, and conducting cluster and weighted analysis and obtaining results of the battery performance through a computer; wherein the mentioned float charge voltage variables are any one or the combination of those selected from the group consisting of: float charge voltage variables of a single battery relative to itself, a float charge voltage variable of a single battery relative to the battery set, variable of the float charge voltage dispersion ratio of a single battery relative to itself and variable of the float charge voltage dispersion ratio of a single battery relative to the battery set; wherein the float charge voltage variable of a single battery relative to itself is obtained through following steps: storing float charge voltage of each battery in a certain period; and calculating change of the float charge voltage of each battery relative to itself in this period; and wherein the float charge voltage variable of a single battery relative to itself is calculated by equation (1): where: