| 摘要 |
PROBLEM TO BE SOLVED: To suppress time for raise the temperature of a battery requiring a temperature rise in a configuration that includes two batteries.SOLUTION: When only a first battery 50, of first and second batteries 50, 60, requires raising of a temperature, a first relay 54 is turned on to connect the first battery 50 to a first step-up circuit 52 (i.e., the first battery 50 is connected to a motor 32 side), whereas when only the second battery 60 requires raising a temperature, a second relay 64 is turned on to connect the second battery 60 to a second step-up circuit 62 (i.e., the second battery 60 is connected to the motor 32 side).SELECTED DRAWING: Figure 1 |
