US 12,432,892 B2
Pulse inverter as well as powertrain and method for heating a coolant
Timijan Velic, Weissach (DE); Maximilian Barkow, Stuttgart (DE); Pascal Heusler, Stuttgart (DE); Stefan Gatzemann, Sersheim (DE); and Jannik Maier, Aichtal (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 2, 2023, as Appl. No. 18/310,547.
Claims priority of application No. 102022111447.3 (DE), filed on May 9, 2022.
Prior Publication US 2023/0363122 A1, Nov. 9, 2023
Int. Cl. H05K 7/20 (2006.01); H02K 11/33 (2016.01); H02M 7/00 (2006.01)
CPC H05K 7/20945 (2013.01) [H02K 11/33 (2016.01); H02M 7/003 (2013.01); H05K 7/20927 (2013.01)] 7 Claims
OG exemplary drawing
 
1. A powertrain comprising:
a pulse inverter comprising:
a pulse inverter housing, in which at least one power electronics is provided,
wherein at least the pulse inverter housing is configured to be cooled by a flowing coolant through housing means,
wherein the power electronics comprises at least one controller, a gate driver, and a semiconductor element,
wherein, for switching a semiconductor element, the gate driver provides a turn-on voltage UGS and a turn-off voltage U0 and is actuatable by the controller for this purpose, and
wherein the controller comprises control means, via which a withstand voltage UR<UGS is adjustable, whereby a power dissipation PV can be generated, causing the power electronics and/or the coolant to heat up;
an electric machine with a cooling circuit having an energy reservoir,
wherein the electric machine connects to the pulse inverter,
wherein an electric machine housing is configured so as to be perfusible by the coolant; and
a switch for changing a perfusion direction of the coolant.