Patent ID: 7816805
Filing Date: 2010-10-19
Classification: B62D,H02J

Abstract:
1. A power supply system comprising: a chargeable and dischargeable first power storage device having one potential terminal, an other potential terminal, and a first chargeable voltage range; a chargeable and dischargeable second power storage device having one potential terminal, an other potential terminal, and a second chargeable voltage range lower than the first chargeable voltage range; a multiphase motor having a star-connected multiphase stator windings with a neutral point, the multiphase motor working to generate torque when the star-connected multiphase stator windings are energized, the neutral point being electrically connected with the one potential terminal of the second power storage device; a multiphase inverter including a plurality of switching elements connected with each other in bridge configuration to provide a high-side direct-current (DC) terminal and a low-side direct-current (DC) terminal, the high-side DC terminal being electrically connected with the one potential terminal of the first power storage device, the low-side DC terminal being electrically connected with the other potential terminal of the first power storage device, any one of the high-side and low-side DC terminals being electrically connected with the other potential terminal of the second power storage device; and a controller electrically connected with the plurality of switching elements, the controller working to switch the plurality of switching elements on and off during the multiphase motor being activated to thereby: the controller working to switch the plurality of switching elements on and off during the multiphase motor being inactivated to thereby boost the voltage of the second power storage device to charge the first power storage device by the boosted voltage.