US 12,447,839 B2
High-voltage charging circuit in a vehicle, and on-board vehicle electrical system
Franz Pfeilschifter, Wenzenbach (DE); and Martin Götzenberger, Ingolstadt (DE)
Assigned to Vitesco Technologies GmbH, Regensburg (DE)
Filed by Vitesco Technologies GMBH, Regensburg (DE)
Filed on Sep. 28, 2022, as Appl. No. 17/935,979.
Application 17/935,979 is a continuation of application No. PCT/EP2021/057677, filed on Mar. 25, 2021.
Claims priority of application No. 102020204336.1 (DE), filed on Mar. 4, 2020.
Prior Publication US 2023/0017971 A1, Jan. 19, 2023
Int. Cl. B60L 53/22 (2019.01); B60L 1/02 (2006.01); B60L 53/14 (2019.01); H02J 7/00 (2006.01); H02J 7/02 (2016.01); H02M 7/217 (2006.01)
CPC B60L 53/22 (2019.02) [B60L 1/02 (2013.01); B60L 53/14 (2019.02); H02J 7/0068 (2013.01); H02J 7/02 (2013.01); H02M 7/217 (2013.01); B60L 2210/14 (2013.01); B60L 2210/30 (2013.01); H02J 2207/20 (2020.01)] 16 Claims
OG exemplary drawing
 
1. A vehicle-based high-voltage charging circuit comprising:
an AC voltage terminal;
at least two galvanically isolating DC-DC converters;
a rectifier via which the at least two galvanically isolating DC-DC converters are connected to the AC voltage terminal;
a changeover switch;
a first DC voltage terminal;
a second DC voltage terminal, the first DC voltage terminal and the second DC voltage terminal selectively connected to a first of the at least two galvanically isolating DC-DC converters via the changeover switch;
a third DC voltage terminal connected to the second of the at least two galvanically isolating DC-DC converters; and
a controller having a first mode and a second mode;
wherein during the first mode, the controller drives the at least two galvanically isolating DC-DC converters according to a first target output voltage which is at least 750 V and at most 1000 V, and during the second mode, the controller drives the at least two galvanically isolating DC-DC converters according to a second target output voltage which is at most 480 V or at most 450 V.