US 12,187,163 B2
High-voltage system for a fuel-cell vehicle for determining an insulation fault
Martin Breu, Münster/Steinach (DE); Maximilian Schiedermeier, Ingolstadt (DE); and Jessica Denisse Ramirez Rocha, Ingolstadt (DE)
Assigned to AUDI AG, Ingolstadt (DE)
Appl. No. 17/045,711
Filed by AUDI AG, Ingolstadt (DE)
PCT Filed Mar. 11, 2019, PCT No. PCT/EP2019/055977
§ 371(c)(1), (2) Date Oct. 6, 2020,
PCT Pub. No. WO2019/192802, PCT Pub. Date Oct. 10, 2019.
Claims priority of application No. 10 2018 205 165.8 (DE), filed on Apr. 6, 2018.
Prior Publication US 2021/0362624 A1, Nov. 25, 2021
Int. Cl. B60L 58/40 (2019.01); B60L 3/00 (2019.01); B60L 58/30 (2019.01); H01M 8/04664 (2016.01)
CPC B60L 58/40 (2019.02) [B60L 3/0053 (2013.01); B60L 58/30 (2019.02); H01M 8/04664 (2013.01); B60L 2210/10 (2013.01); B60L 2210/40 (2013.01); H01M 2220/20 (2013.01); H01M 2250/20 (2013.01)] 10 Claims
OG exemplary drawing
 
1. A high-voltage system for a fuel-cell vehicle, comprising:
a fuel-cell network with a fuel-cell system; and
a traction network with a high-voltage battery,
wherein the fuel-cell network and the traction network are electrically connected to each other via a DC/DC converter with a blocking diode having a conducting direction from the fuel-cell network in the direction of the traction network, the blocking diode being an integral part of the DC/DC converter, and
wherein the high-voltage system comprises a single insulation monitor that is associated with the fuel-cell network and that is set up to detect an insulation fault common to the fuel-cell network and the traction network.