US 11,671,016 B2
Multi-phase direct voltage converter for a fuel cell stack
Martin Breu, Münster/Steinach (DE); and Maximilian Schiedermeier, Ingolstadt (DE)
Assigned to Audi AG, Ingolstadt (DE)
Appl. No. 17/42,042
Filed by AUDI AG, Ingolstadt (DE)
PCT Filed Mar. 25, 2019, PCT No. PCT/EP2019/057441
§ 371(c)(1), (2) Date Sep. 25, 2020,
PCT Pub. No. WO2019/185547, PCT Pub. Date Oct. 3, 2019.
Claims priority of application No. 10 2018 204 845.2 (DE), filed on Mar. 29, 2018.
Prior Publication US 2021/0021195 A1, Jan. 21, 2021
Int. Cl. H02M 3/158 (2006.01); B60L 50/75 (2019.01)
CPC H02M 3/1584 (2013.01) [B60L 50/75 (2019.02); B60L 2210/10 (2013.01)] 8 Claims
OG exemplary drawing
 
1. A multi-phase direct voltage converter, comprising:
a first switch-off element configured to be coupled to a first pole of a fuel cell;
a second switch-off element configured to be coupled to the first pole of the fuel cell;
a third switch-off element configured to be coupled to a second pole of the fuel cell;
a group of first current regulators each including:
a first input coupled to the first switch-off element, wherein the first switch-off element is coupled between the first inputs of the first current regulators and the first pole of the fuel cell; and
a second input coupled to the third switch-off element, wherein the third switch-off element is coupled between the second inputs of the first current regulators and the second pole of the fuel cell; and
a group of second current regulators each including:
a first input coupled to the second switch-off element, wherein the second switch-off element is coupled between the first inputs of the second current regulators and the first pole of the fuel cell; and
a second input coupled to the third switch-off element, wherein the third switch-off element is coupled between the second inputs of the second current regulators and the second pole of the fuel cell.