Title :
Battery cell analysis via changes in the slope of the “as-found” data to identify marginal capacity cells
Author :
Langan, Peter E.
Author_Institution :
AVO Int., Valley Forge, PA, USA
Abstract :
Battery impedance data follows a predictable pattern over the life of a battery system. The pattern of this data can be used to identify those cells or battery elements that are losing capacity. This system of analysis is applicable to flooded and VRLA cells and battery jars. These patterns are examined, from the as-found data. The battery systems were not equalized prior to the measurement. Included with this paper are charts on the life cycle of VRLA and flooded battery systems. Examples of actual data are shown with load tests performed, after the as-found impedance tests
Keywords :
electric impedance measurement; lead acid batteries; Pb; VRLA cells; as-found data slope; as-found impedance tests; battery cell analysis; battery impedance data; battery jars; battery system; flooded cells; life cycle; load tests; marginal capacity cells identification; Battery charge measurement; Charge measurement; Current measurement; Impedance measurement; Instruments; Life testing; Performance evaluation; System testing; Temperature; Test pattern generators;
Conference_Titel :
Telecommunications Energy Conference, 2000. INTELEC. Twenty-second International
Conference_Location :
Phoenix, AZ
Print_ISBN :
0-7803-6407-4
DOI :
10.1109/INTLEC.2000.884274
