US 11,970,836 B2
Electric energy transfer system for an excavator
Daniel Bayer, Giengen (DE); and Dirk Asam, Ulm (DE)
Assigned to Liebherr-Hydraulikbagger GmbH, Kirchdorf/Iller (DE)
Filed by Liebherr-Hydraulikbagger GmbH, Kirchdorf/Iller (DE)
Filed on Mar. 12, 2021, as Appl. No. 17/200,015.
Claims priority of application No. 10 2020 108 856.6 (DE), filed on Mar. 31, 2020.
Prior Publication US 2021/0301497 A1, Sep. 30, 2021
Int. Cl. B60L 50/60 (2019.01); B60L 1/00 (2006.01); B60L 1/02 (2006.01); B60L 50/40 (2019.01); E02F 9/02 (2006.01); E02F 9/12 (2006.01); E02F 9/18 (2006.01); E02F 9/20 (2006.01)
CPC E02F 9/20 (2013.01) [B60L 1/00 (2013.01); B60L 1/02 (2013.01); B60L 50/40 (2019.02); B60L 50/66 (2019.02); E02F 9/02 (2013.01); E02F 9/123 (2013.01); E02F 9/18 (2013.01); B60L 2200/40 (2013.01)] 16 Claims
OG exemplary drawing
 
1. A mobile work machine (1), comprising:
an undercarriage (2) having a tracked chassis, a rail mounting, or a wheeled chassis (3);
a superstructure (4) having an attachment fastened thereto;
a slewing ring (8) that rotatably connects the undercarriage (2) and the superstructure (4) to one another;
a decentralized energy supply network (6) for supplying energy to actuate the mobile work machine (1);
a slip ring (5) to transfer electric energy between the superstructure (4) and the undercarriage (2); and
a plurality of energy store units (7),
wherein one of the plurality of energy store units (7) which is connected to the slip ring (5), is configured in a decentralized manner.