US 11,791,742 B2
Protection device for a pulse inverter
Tobias Enzinger, Hohenwart GT Freinhausen (DE); and Benjamin Söhnle, Ingolstadt (DE)
Assigned to AUDI AG, Ingolstadt (DE)
Filed by AUDI AG, Ingolstadt (DE)
Filed on Nov. 2, 2021, as Appl. No. 17/453,276.
Claims priority of application No. 102020129134.5 (DE), filed on Nov. 5, 2020.
Prior Publication US 2022/0141977 A1, May 5, 2022
Int. Cl. H02M 7/00 (2006.01); H02K 5/22 (2006.01); H05K 9/00 (2006.01)
CPC H02M 7/003 (2013.01) [H02K 5/22 (2013.01); H02K 2211/00 (2013.01); H05K 9/0067 (2013.01)] 14 Claims
OG exemplary drawing
 
1. A system, comprising:
an electric machine housing;
a pulse inverter having an open housing part, at least one inner element arranged in the open housing part, and at least one power rail extending from the at least one inner element toward an opening of the open housing part;
a protection device between an outer wall of the electric machine housing and the at least one inner element;
wherein the protection device is on the opening of the open housing part of the pulse inverter;
wherein the protection device is configured to protect the at least one inner element of the pulse inverter from dirt, mechanical impact or electrostatic charging;
wherein the at least one power rail is sealed in a watertight manner against the electric machine housing by a circumferential sealing lip; and
wherein the protection device is arranged on the opening of the open housing part such that the at least one power rail surrounded by the circumferential sealing lip is not overlaid by the protection device.