Title:
ELECTRIC WORK MACHINE
Document Type and Number:
WIPO Patent Application WO/2019/208304
Kind Code:
A1
Abstract:
An excavator 1 comprising: a power supply 61 that converts AC power supply voltage from a commercial power supply 5 into DC power supply voltage; a battery 62 that charges or discharges power from the power supply 61; an inverter 63 that converts DC power supply voltage to AC power supply voltage; an electric motor 7 that has power supplied thereto, and is controlled, by the inverter 63; a first electrical circuit 6a that supplies power to the inverter 63 from the power supply 61; a second electrical circuit 6b that joins from the battery 62 to the first electrical circuit 6a; an inverter relay 64 arranged between the inverter 63 and a junction point 6c between the first electrical circuit 6a and the second electrical circuit 6b; a battery relay 65 arranged between the junction point 6c and the battery 62; and a power supply relay 66 arranged between the junction point 6c and the power supply 61.
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Inventors:
KANEDA KENSUKE (JP)
TERASHIMA JUN (JP)
TERASHIMA JUN (JP)
Application Number:
PCT/JP2019/016149
Publication Date:
October 31, 2019
Filing Date:
April 15, 2019
Export Citation:
Assignee:
YANMAR CO LTD (JP)
International Classes:
E02F9/00; B60L1/00; B60L9/30; H02J1/00; H02J7/00; H02J7/34
Foreign References:
| JP2010121327A | 2010-06-03 | |||
| JP2009225587A | 2009-10-01 | |||
| JP2009097270A | 2009-05-07 | |||
| JP2007228715A | 2007-09-06 | |||
| JP2008308881A | 2008-12-25 |
Other References:
See also references of EP 3786371A4
Attorney, Agent or Firm:
UNIUS PATENT ATTORNEYS OFFICE (JP)
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