US 12,439,570 B2
Pulse inverter having a cooling device as well as motor vehicle having a pulse inverter
Sebastian Wachter, Pressig (DE); and Maurice Kleindienst, Woerth am Rhein (DE)
Assigned to DR. ING. H.C. F. PORSCHE AKTIENGESELLSCHAFT, Stuttgart (DE)
Filed by Dr. Ing. h.c. F. Porsche Aktiengesellschaft, Stuttgart (DE)
Filed on May 31, 2023, as Appl. No. 18/326,014.
Claims priority of application No. 10 2022 114 113.6 (DE), filed on Jun. 3, 2022.
Prior Publication US 2023/0397380 A1, Dec. 7, 2023
Int. Cl. H05K 7/20 (2006.01); B60L 50/51 (2019.01); B60L 50/60 (2019.01); H02M 7/00 (2006.01); H02P 27/06 (2006.01)
CPC H05K 7/2089 (2013.01) [B60L 50/51 (2019.02); B60L 50/60 (2019.02); H02M 7/003 (2013.01); B60L 2210/40 (2013.01); H02P 27/06 (2013.01)] 11 Claims
OG exemplary drawing
 
1. A pulse inverter for operating an electric machine of a motor vehicle, comprising:
a power module for converting DC current provided by a motor vehicle battery into AC current,
wherein the pulse inverter comprises a cooling device for cooling components of the pulse inverter by an electrically insulating cooling liquid flowing through the cooling device, wherein the cooling device comprises a fluid-tight housing,
wherein the components include the power module,
wherein the electrically insulating cooling liquid flowing through the fluid-tight housing is in direct contact with at least one of the components of the pulse inverter to be cooled,
wherein the cooling device further comprises a cooling channel, the electrically insulating cooling liquid entering the cooling channel originates from an outside of the fluid-tight housing,
wherein the power module is mounted to an outer surface of the cooling channel, wherein the cooling channel comprises an output, and
wherein the output opens into the fluid-tight housing, so that the electrically insulating cooling liquid flowing through the cooling device first flows through the cooling channel and subsequently the fluid-tight housing, then exits to the outside of the fluid-tight housing.