Electrified vehicle high voltage contactor control

Abstract

An electrified vehicle includes a contactor having a coil operable by a low-voltage control signal to selectively electrically couple a terminal of a high-voltage bus to a charger receiving power from an external source. A programmed controller predicts the time it will take for the contactor to close after receiving a command based on the coil temperature and voltage of the command signal. The controller generates the low-voltage control signal responsive to a difference between bus voltage and charger voltage being less than a first threshold at the predicted closing time of the contactor. The control signal may also depend on the rate of change of the charger voltage being below a second threshold.

Dependencies are inferred from the claim text.