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Patent Searching and Data


Title:
POWER SUPPLY DEVICE OF ELECTRIC EXCAVATOR
Document Type and Number:
WIPO Patent Application WO/2021/049893
Kind Code:
A1
Abstract:
The present invention relates to a power supply device of an electric excavator, and the power supply device of an electric excavator comprises: a power supply unit for supplying battery power to an electric motor unit; a first charging port which is connected to the power supply unit and which supplies first external power to the battery; an OBC which is connected to the power supply unit, and which converts alternating current into direct current when alternating current power is inputted; and a second charging port which is connected to the OBC, and which supplies second external power to the OBC, wherein the power supply unit supplies the charged power of the OBC or the charged power of the OBC and the power of the battery to the electric motor unit on the basis of the amount of required electricity of the electric motor unit and the amount of charging electricity of the OBC.

Inventors:
SEO HYUNJAE (KR)
Application Number:
PCT/KR2020/012258
Publication Date:
March 18, 2021
Filing Date:
September 10, 2020
Export Citation:
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Assignee:
DOOSAN INFRACORE CO LTD (KR)
International Classes:
E02F9/20; B60L1/00; B60L50/51; B60L50/60
Foreign References:
KR20150038169A2015-04-08
JP2007224585A2007-09-06
JP2014193763A2014-10-09
JP2012232724A2012-11-29
US20170043823A12017-02-16
Attorney, Agent or Firm:
WETHEPEOPLE IP & LAW FIRM (KR)
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