| 主权项 |
1. A power driving system for an electric vehicle, the electric vehicle comprising a motor, the power driving system comprising:
plural configuration-variable series-type battery boxes; a first DC bus electrically connected with the plural configuration-variable series-type battery boxes for selectively receiving electric energy from the plural configuration-variable series-type battery boxes; a second DC bus electrically connected with the plural configuration-variable series-type battery boxes for selectively receiving electric energy from the plural configuration-variable series-type battery boxes; and a power converter electrically connected between first DC bus and the second DC bus, wherein after the power driving system is changed from a steady state power mode to a driving voltage switching mode, a driving voltage switching process is performed, wherein if the first DC bus is in a steady state and the second DC bus is in a standby state while the driving voltage switching process is performed, the power converter uses a voltage of the first DC bus to adjust a voltage of the second DC bus, or if the second DC bus is in the steady state and the first DC bus is in the standby state while the driving voltage switching process is performed, the power converter uses the voltage of the second DC bus to adjust the voltage of the first DC bus. |
