Patent ID: 8239081
Filing Date: 2012-08-07
Classification: B60K,B60W,E02F,G01R,H02J

Abstract:
1. A hybrid type working machine comprising: a first electric motor which performs a power running operation driven by a supply of electric power and a regenerating operation generating electric power; a first electric circuit which controls the power running operation and the regenerating operation of the first electric motor; a charge accumulating circuit which supplies electric power to the first electric motor and accumulates electric power regenerated by the first electric motor; a control device which controls the first electric circuit and the charge accumulating circuit; and a start key which activates the control device, wherein the charge accumulating circuit includes: wherein the control device switches the first switch from the OFF state to the ON state due to the start key being turned on, measures a physical quantity involved with a discharge characteristic of the charge accumulating capacitor, and calculates at least one of the internal resistance and a capacitance of the charge accumulating capacitor on the basis of a measurement result.