US 12,149,076 B2
Energy supply device and construction machine
Rolf Wirfs, Engstingen (DE); Georg Dielmann, Reutlingen (DE); Johannes Demling, Filderstadt (DE); Sebastian Kerner, Neuffen (DE); Christian Ziemens, Stuttgart (DE); and Werner Tausch, Koengen (DE)
Assigned to Putzmeister Engineering GmbH, Aichtal (DE); and REFU Drive GmbH, Pfullingen (DE)
Appl. No. 18/265,859
Filed by Putzmeister Engineering GmbH, Aichtal (DE); and REFU Drive GmbH, Pfullingen (DE)
PCT Filed Dec. 6, 2021, PCT No. PCT/EP2021/084359
§ 371(c)(1), (2) Date Jun. 7, 2023,
PCT Pub. No. WO2022/122638, PCT Pub. Date Jun. 16, 2022.
Claims priority of application No. 10 2020 215 491.0 (DE), filed on Dec. 8, 2020.
Prior Publication US 2024/0063638 A1, Feb. 22, 2024
Int. Cl. H02J 3/00 (2006.01); H02J 3/46 (2006.01); H02M 3/00 (2006.01); H02M 7/08 (2006.01)
CPC H02J 3/007 (2020.01) [H02J 3/46 (2013.01); H02M 3/01 (2021.05); H02M 7/08 (2013.01)] 11 Claims
OG exemplary drawing
 
1. An energy supply device for supplying electrical loads with electrical energy, comprising:
an intermediate circuit;
a first network connection to which a first AC voltage network is able to be connected as intended;
a first rectifier that is designed to rectify an AC voltage, which corresponds to an AC voltage present at the first network connection, or is based thereon, and to feed the rectified voltage to the intermediate circuit;
a second network connection to which a second AC voltage network is able to be connected as intended;
a second rectifier that is designed to rectify an AC voltage, which corresponds to an AC voltage present at the second network connection, or is based thereon;
a controllable DC/DC converter, to a first side of which the voltage rectified by the second rectifier is applied, and a second side of which is connected to the intermediate circuit;
a first converter that is fed from the intermediate circuit and that is designed to supply a first electrical load with electrical energy;
a power measuring apparatus that is designed to measure an electric power drawn at the first network connection; and
a control apparatus that has a data connection to the power measuring apparatus and that is designed to actuate the DC/DC converter depending on the electric power drawn at the first network connection.