ELECTRIC WORK MACHINE

WIPO Patent Application WO/2023/189344

A1

This electric work machine (1) comprises a body (2), a battery unit (30) installed in the body, an electric motor (9) driven by electric power from the battery unit, a hydraulic apparatus operated by motive power from the electric motor, a working device (20, 10) operated by the hydraulic pressure of hydraulic oil supplied from the hydraulic apparatus, a control device (7) for controlling the driving of the electric motor, a switching member (5c, 58) capable of switching between a first position where operation of the working device is permitted and a second position where operation of the working device is not permitted, and an oil temperature detection device (44) for detecting the temperature (T) of the hydraulic oil, the control device (7) controlling the rotation speed (R) of the electric motor to a prescribed first rotation speed (R1) equivalent to a stopped state of the electric motor when, during the driving of the electric motor, the switching member is switched to the second position and the temperature of the hydraulic oil is in a prescribed acceptable temperature range that is neither a low-temperature state nor a high-temperature state.

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SAI TAKUMA (JP)
UOTANI IKUHIRO (JP)
ITO JUNKI (JP)
TAMBA DAIKI (JP)

PCT/JP2023/008995

October 05, 2023

March 09, 2023

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KUBOTA KK (JP)

B60L15/20; B60L9/18; B60L50/60; E02F9/20

WO2015011832A1

2015-01-29

JP2016132967A	2016-07-25
JP2016061016A	2016-04-25
JP2021080707A	2021-05-27
JPH09158255A	1997-06-17
JP2012041716A	2012-03-01
JPH06346488A	1994-12-20
JP2000314333A	2000-11-14
JP2020039239A	2020-03-12

YASUDA & OKAMOTO IP LAW FIRM (JP)

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