Patent ID: 9136783
Filing Date: 2015-09-15
Classification: B60L,H02H,H02P,Y02T

Abstract:
1. A vehicle, comprising: a power supply system; a drive device driving using electric power supplied from said power supply system; and a control device performing control of said power supply system and said drive device, wherein said power supply system includes a first power storage device capable of supplying electric power to said drive device, a second power storage device connected to said drive device in parallel with said first power storage device, a first switch switching between supply and interruption of the electric power between said first power storage device and said drive device, a second switch having a first contact point connected to a positive electrode of said second power storage device and a second contact point connected to a negative electrode of said second power storage device for individually switching between supply and interruption of electric power from said second power storage device to said drive device, and a capacitor connected between paths coupling said second switch to said drive device, and when said control device disconnects said second power storage device from said drive device while the vehicle is traveling, said control device disconnects one of the first contact point and the second contact point of said second switch and causes the vehicle to continue traveling using the electric power supplied from said first power storage device to said drive device, and after the vehicle finishes traveling, said control device performs a discharging operation for discharging a charge remaining in the capacitor with the one contact point of said second switch being disconnected, and if the charge is not discharged appropriately, said control device determines that welding occurs in at least one of said first switch and said second switch.