US 12,291,836 B2
Electrically powered construction machine
Jun Terashima, Fukuoka (JP); and Kensuke Kaneda, Fukuoka (JP)
Assigned to Yanmar Power Technology Co., Ltd., Osaka (JP)
Appl. No. 17/416,458
Filed by Yanmar Power Technology Co., Ltd., Osaka (JP)
PCT Filed Nov. 20, 2019, PCT No. PCT/JP2019/045415
§ 371(c)(1), (2) Date Jun. 18, 2021,
PCT Pub. No. WO2020/129524, PCT Pub. Date Jun. 25, 2020.
Claims priority of application No. 2018-237019 (JP), filed on Dec. 19, 2018.
Prior Publication US 2022/0074163 A1, Mar. 10, 2022
Int. Cl. E02F 3/32 (2006.01); B60K 1/04 (2019.01); B60L 50/40 (2019.01); B60L 50/50 (2019.01); B60L 53/00 (2019.01); B60L 55/00 (2019.01); E02F 9/08 (2006.01); E02F 9/20 (2006.01)
CPC E02F 3/325 (2013.01) [B60K 1/04 (2013.01); B60L 50/40 (2019.02); B60L 50/50 (2019.02); B60L 53/00 (2019.02); B60L 55/00 (2019.02); E02F 9/0858 (2013.01); E02F 9/207 (2013.01); E02F 9/2091 (2013.01)] 6 Claims
OG exemplary drawing
 
1. An electrically powered construction machine which includes a lower traveling body and an upper revolving body revolvably mounted on the lower traveling body, comprising:
an electric motor disposed on the upper revolving body for driving the electrically powered construction machine;
a first electrical storage device disposed on the upper revolving body;
a second electrical storage device disposed on the lower traveling body;
a slip ring is positioned inside a connecting portion between the lower traveling body and the upper revolving body; and
a feeder device disposed on the upper revolving body for externally supplying electric power to the first electrical storage device, and the feeder device supplying electric power to the second electrical storage device via the slip ring.