Patent ID: 8063506
Filing Date: 2011-11-22
Classification: B60L,B60R,H02H,H02J,Y02T

Abstract:
1. A power source apparatus comprising: a battery; a plurality of contactors connected to an output-side of the battery; a capacitor connected to a load-side of the battery; a pre-charge circuit connected in series to one contactor among the plurality of contactors, the pre-charge circuit including a series connection of a pre-charge resistor and a pre-charge relay that provides an auxiliary charge to the capacitor; and a control circuit to control the plurality of contactors and the pre-charge relay, wherein the pre-charge resistor is connected in parallel with the one contactor, and the pre-charge relay is connected in series with the one contactor, the control circuit switches the pre-charge relay ON to pre-charge the capacitor connected to the load-side of the battery, and switches the one contactor ON to connect the battery to the load-side, and the contactor connected in series with the pre-charge relay is provided with contacts that are of a higher durability and lifetime than those of the pre-charge relay, while the contacts of the pre-charge relay are of a higher capacity type than those of the contactor connected in series with the pre-charge relay.