| 摘要 |
The present invention is provided with: a power storage device; a charging-use disconnect switch, a discharging-use disconnect switch, and two contactors which are all for the purpose of switching the charge/discharge state of the power storage device; a plurality of contact points linked with the opening and closing of each of the disconnect switches and contactors; an open/close instruction unit for issuing open/close instructions for the disconnect switches and the contactors; and a diagnosis start determination unit for determining the diagnosis start time before entering a section with no overhead wires. Also provided are: a power storage residual amount confirmation unit which operates when the diagnosis start determination unit confirms that it is time to start diagnosis and which confirms if the power storage device has the power storage residual amount needed to travel the section with no overhead wires; a contact point operation confirmation unit that confirms the soundness of the disconnect switches and the contactors, on the basis of a prescribed open/close state of the plurality of contact points in accordance with an open/close instruction by the open/close instruction unit; and an abnormality determination unit for determining that traveling in the section with no overhead wires is not possible in a case where the soundness or necessary power storage residual amount cannot be confirmed. |
