| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide an electric working machine with an electrical drive unit capable of improving convenience when a power storage element is charged by power from an external power supply, simplifying a circuit configuration compared with the conventional circuit configurations, and using an inexpensive diode which constitutes a rectifier. <P>SOLUTION: An electric working machine 100 comprises an electrical drive unit 10 which charges a power storage element BT with power from an external power supply PW by controlling a bidirectional step-up/step-down DC-DC converter 12. The electrical drive unit 10 includes disconnection means 13 for electrically disconnecting a capacitance component C2 having at least the maximum rating capacity among a capacitance component C1 and the capacitance component C2 from the bidirectional step-up/step-down DC-DC converter 12 and a connection terminal CN1 which connects the external power supply PW to the bidirectional step-up/step-down DC-DC converter 12 via a rectifier D and an inductor L2. <P>COPYRIGHT: (C)2012,JPO&INPIT |
