| 摘要 |
PROBLEM TO BE SOLVED: To attain standardization and lowering of the price of the electrical system of an electric vehicle. SOLUTION: A unit DC-DC converter 600 is disposed in every set of plural module batteries 10, which constitute a main battery 1, and the output side of this unit DC-DC converter is connected to each auxiliary battery 6. In this way, the constituent items or the components of the electrical systems which thus far have been manufactured by separate specifications for each electrical system are standardized, enabling the unit DC-DC convertor to cope with respect to various terminal voltages of Main batteries 1 by the adjustment of the number of convertors to be installed, thereby realizing reduction in the price of the electrical system as a whole. |
