| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To enhance energy efficiency of the entire system by transferring power between voltage systems connected with two capacitor devices depending on the state of two capacitor devices or the state of a generator. <P>SOLUTION: When an engine 22 is operating, an alternator 42 is driven such that the residual capacity SOC of a high voltage battery 60 has an intermediate value (e. g. 60%) and a low voltage battery 50 is charged preferentially depending on the state of the low voltage battery 50 or the high voltage battery 60 such as the residual capacity, internal resistance, open terminal voltage, and the like, thus charging/discharging the low voltage battery 50 and the high voltage battery 60. When the engine 22 is not operating, the alternator 42 is driven such that the residual capacity SOC of the high voltage battery 60 approaches 100% depending on the state of the low voltage battery 50 or the high voltage battery 60 such as the residual capacity, internal resistance, open terminal voltage, and the like, thus charging the low voltage battery 50 and the high voltage battery 60. <P>COPYRIGHT: (C)2007,JPO&INPIT</p> |
