Title:
ELECTRIC WORK MACHINE
Document Type and Number:
WIPO Patent Application WO/2022/181271
Kind Code:
A1
Abstract:
Provided is a hydraulic shovel as an electric work machine, the hydraulic shovel comprising: a charger that supplies electric power from an external power source to a battery to charge the battery; an electric motor that is driven with electric power supplied from the battery; a hydraulic system including a hydraulic pump driven by the electric motor and a hydraulic actuator to which pressure oil is supplied by the hydraulic pump; a control unit that manages a physical quantity indicating the operation status of the electric motor as first operation information, and manages a physical quantity indicating the operation status of the battery including charging and discharging as second operation information; and an output unit that outputs the first operation information and the second operation information.
Inventors:
KANEDA KENSUKE (JP)
ONITSUKA KOSUKE (JP)
ONITSUKA KOSUKE (JP)
Application Number:
PCT/JP2022/004038
Publication Date:
September 01, 2022
Filing Date:
February 02, 2022
Export Citation:
Assignee:
YANMAR HOLDINGS CO LTD (JP)
International Classes:
E02F9/20; E02F9/26
Foreign References:
| JP2020125625A | 2020-08-20 | |||
| JPH10317428A | 1998-12-02 | |||
| JP2020039239A | 2020-03-12 | |||
| JP2007262806A | 2007-10-11 |
Attorney, Agent or Firm:
SANO PATENT OFFICE (JP)
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