Electric work machine
Number of patents in Portfolio can not be more than 2000
United States of America
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Jan 18, 2022
Grant Date -
May 6, 2021
app pub date -
Apr 15, 2019
filing date -
Apr 15, 2019
priority date (Note) -
In Force
status (Latency Note)
Importance
Abstract
An excavator comprising: a power supply that converts AC power supply voltage from a commercial power supply into DC power supply voltage; a battery that charges or discharges power from the power supply; an inverter that converts DC power supply voltage to AC power supply voltage; an electric motor that has power supplied thereto, and is controlled, by the inverter; a first electrical circuit that supplies power to the inverter from the power supply; a second electrical circuit that joins from the battery to the first electrical circuit; an inverter relay arranged between the inverter and a junction point between the first electrical circuit and the second electrical circuit; a battery relay arranged between the junction point and the battery; and a power supply relay arranged between the junction point and the power supply.
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