| 摘要 |
PROBLEM TO BE SOLVED: To provide a driving device for multiple-battery electric automobile which hardly causes an inoperable state due to insufficient charging of a low- voltage battery and, in addition, can remarkably reduce the switching noise voltage superposed upon a low-voltage power line on the side of a battery for auxiliary device. SOLUTION: A driving device is provided with a high-voltage battery 1 for supplying power to a running motor 4, a low-voltage battery 2 for supplying power to auxiliary devices, a three-phase inverter circuit 31 which is supplied with power from the battery 1 through a shielded high-voltage side power line 5 and controls the drive of the running motor 4, and a driver circuit 32 which intermittently controls the inverter circuit 31. In this constitution, the driver circuit 32 is supplied with power from the battery 1 through the shielded power line 5. When the driving device is constituted in such a way, the large switching noise voltage of the inverter circuit 31 can be prevented from flowing in a low-voltage power line 7, through which power is supplied to auxiliary devices including electronic equipment such as the radio, etc. |
