APPLICATION INDEPENDENT MAP-BASED CYCLE LIFE TESTING OF BATTERY CELLS

摘要

A method and system for application independent map-based cycle life testing of battery cells is provided. A target depth of discharge (DOD) and a charge/discharge current level is selected for the battery test. The battery is discharged to the target DOD. The battery is cycled within the DOD range one or more times, wherein the cycling comprises a charge pulse and a discharge pulse at the selected current levels. A reference performance test (RPT) is performed on the battery, wherein the RPT comprises a static capacity test and a dynamic power test. The cycling and RPT testing are repeated until an end of test condition is detected.

主权项

1. A method for cycle life testing of a battery, said method comprising:
selecting a target depth of discharge (DOD) for said battery test; selecting a DOD range about said target DOD for said battery test; selecting a charge current (Ic) and a discharge current (Id) for said battery test; discharging said battery to said target DOD; cycling said battery within said DOD range one or more times, wherein said cycling comprises a charge pulse at Ic and a discharge pulse Id; performing a reference performance test (RPT) on said battery, wherein said RPT comprises a static capacity test and a dynamic power test; determining if an end of test condition has occurred; and repeating said cycling and said RPT testing until said end of test condition occurs.