| 摘要 |
PROBLEM TO BE SOLVED: To realize a small size and large capacity battery device applied to a hybrid rail vehicle, wherein the cooling efficiency and the safety of the battery device is improved. SOLUTION: The hybrid rail vehicle provided with a power device for generating dc power using the power of engine, an inverter device for supplying ac power to an ac motor for driving the vehicle by transferring the dc power generated from the power source into the ac power of variable voltage and variable frequency, and a secondary battery device connected parallel to the out put of the power source to supply the dc power to the inverter device. The secondary battery device gives the practical voltage of about 750 V in rail vehicle by connecting 108 unit batteries from 69121 to 6912n in series, while each unit batteries provides the voltage of about 7 V. COPYRIGHT: (C)2006,JPO&NCIPI |
