Hybrid car system pre-charge method, and electric vehicle systems

摘要

PROBLEM TO BE SOLVED: To provide a precharge method in which reconnection of a contactor 20 can be promptly performed while suppressing temperature rise of precharge resistance 23.;SOLUTION: An interval time until the start of a second precharge after completion of a first precharge is determined using at least one of parameters among:(a) electric current I1 that flowed through a precharge resistance 23 during a first precharge, (b) a secondary side voltage V2 of a precharge contactor 22 after completion of the first precharge, and (c) difference between the primary side voltage V1 and the secondary side voltage V2 of the precharge contactor 22 after completion of the first precharge.;COPYRIGHT: (C)2008,JPO&INPIT