Abstract: Battery cell end-of-line (EOL) quality processing techniques for a lithium iron phosphate (LFP) battery system for an electrified vehicle include determining, for each of a plurality of test LFP battery cells, (i) a minimum state of charge (SOC) threshold and (ii) a self-discharge rate and a self-discharge rate threshold based on the plurality of self-discharge rates, determining whether each LFP battery cell of the LFP battery system passes a cell quality test based on the minimum SOC threshold, the self-discharge rate threshold, and a self-discharge rate of the LFP battery cell, and keeping any of the LFP battery cells of the LFP battery system that pass their respective cell quality tests and replacing any of the LFP battery cells of the LFP battery system that fail their respective cell quality tests to obtain a final EOL LFP battery system.

Abstract: Static state of charge (SOC) correction for a lithium iron phosphate (LFP) battery system of an electrified vehicle includes in response to a power-off of the electrified vehicle, (i) determining an initial SOC of the LFP battery system, (ii) initiating a power-off timer and (iii) initiating a periodic temperature measurement of the LFP battery system, in response to a subsequent power-on of the electrified vehicle, (i) stopping the power-off timer, (ii) determining an average of the periodic temperature measurements of the LFP battery system, and (iii) accessing a calibrated look-up table to determine a self-discharge rate of the LFP battery system based on a value of the power-off timer and the measured temperature of the LFP battery system, and determining a corrected SOC for the LFP battery system by determining an SOC change based on the determined self-discharge rate and subtracting the SOC change from the initial measured SOC.

Abstract: A battery module for an electrified vehicle includes a first battery cell having a housing, a cathode, a positive end lead, an anode, a negative end lead, an isolator and a fuse. The cathode and anode can be disposed in the housing. The positive end lead can be arranged on the housing and electrically connected to the cathode. The negative end lead can be arranged on the housing. The isolator can be disposed between the housing and the negative end lead. The isolator can inhibit voltage from passing between the housing and the anode. The fuse can be electrically connected between the anode and the negative end lead and be configured to fail as a result of a short circuit condition. Voltage is inhibited from passing between the housing and the anode in a short circuit condition due to the failed fuse and the isolator.