Search Results

This paper describes GEM Power's Total Battery Management System (TBMS), a new approach to the management of all battery types including aviation batteries, by means of treatment and analysis of a matrix of battery parameters (MoP). In addition to current and voltage, the MoP includes battery ohmic resistance (Rohm), chemical resistance (Rch), electrical double layer capacity (EDLC) and battery instantaneous open circuit voltage (Ei). The MoP is created by collecting the battery's stationary and transient voltage responses to specifically designed charging/depol pulses.

Aviation battery maintenance is trending toward maintenance on-condition. NiCd, VRLA, or prospective Li-ion batteries are used to start engines, provide emergency back-up power, and assure ground power capability for maintenance and pre-flight checkout. As these functions are mission essential, State of Health (SoH) recognition is critical. GEM Power has developed a technological approach for SoH recognition, based on a battery equivalent schematic. The schematic is derived from a Matrix of Parameters (MoP), which includes ohm resistance, chemical resistance, electrical double layer capacity (EDLC), and open circuit voltage (OCV) [1].