US 11,912,132 B2
Hybrid transmission for a vehicle
Martin Dengler, Marbach (DE); Benjamin Bauer, Löchgau (DE); Jan Becker, Leonberg (DE); Markus Brandenburg, Esslingen (DE); Andreas Ertel, Korb (DE); Peter Hahn, Stuttgart (DE); Tobias Haerter, Stuttgart (DE); Elmar Mueller, Ehningen (DE); Jörg Weigold, Stuttgart (DE); Timo Maurer, Esslingen (DE); and Preetam Birje, Bengaluru (IN)
Assigned to MERCEDES-BENZ GROUP AG, Stuttgart (DE)
Filed by MERCEDES-BENZ GROUP AG, Stuttgart (DE)
Filed on May 31, 2023, as Appl. No. 18/203,832.
Application 18/203,832 is a continuation of application No. 18/039,009, previously published as PCT/EP2021/078837, filed on Oct. 18, 2021.
Claims priority of application No. 10 2020 007 296.8 (DE), filed on Nov. 30, 2020.
Prior Publication US 2023/0302892 A1, Sep. 28, 2023
Int. Cl. F16H 57/03 (2012.01); B60K 6/40 (2007.10); F16H 57/037 (2012.01); F16H 37/08 (2006.01); F16H 57/02 (2012.01)
CPC B60K 6/40 (2013.01) [F16H 37/0806 (2013.01); F16H 57/037 (2013.01); F16H 2057/02026 (2013.01); F16H 2057/02043 (2013.01)] 9 Claims
OG exemplary drawing
 
1. A hybrid transmission for a vehicle, the hybrid transmission comprising:
a transmission input shaft extending in a transverse direction;
at least one countershaft arranged parallel to the transmission input shaft;
a clutch device arranged coaxially with the transmission input shaft and having at least one clutch;
a differential having a differential input gear, wherein a rotational axis of the differential input gear is arranged parallel to the transmission input shaft;
an electric machine having a rotor and a stator, wherein a rotor rotational axis is arranged parallel to the transmission input shaft;
a transmission control device;
wherein, as viewed in a longitudinal direction arranged perpendicular to the transverse direction, the differential input gear, the transmission input shaft, and a transmission controller comprising the transmission control device are arranged in succession in the recited sequence,
wherein at least one part of a power electronics system for the electric machine is arranged adjacent to the transmission control device in a vertical direction, which is arranged perpendicular to the transverse direction and perpendicular to the longitudinal direction, and
wherein a hydraulic transmission controller is arranged overlapping the electric machine between the transmission control device and a gear set with the transmission input shaft and the at least one countershaft so that the hydraulic transmission controller is configured to interact directly with corresponding components within the hybrid transmission, and
wherein the hybrid transmission further comprises
a circuit board of an inverter of the power electronics system arranged adjacently in the vertical direction and parallel in the longitudinal direction to a circuit board of the transmission control device, wherein the circuit board of the inverter of the power electronics system is spaced less than 20 mm from, and arranged in the vertical direction flush with, the circuit board of the transmission control device;
a direct current connection for the power electronics system arranged in the vertical direction above the rotor rotational axis and in the longitudinal direction between the rotational axis of the differential input gear and the rotor rotational axis; and
a transmission housing accommodating at least the differential input gear, the transmission input shaft, the at least one countershaft, the electric machine, the transmission control device, the hydraulic transmission controller and the power electronics system, wherein the transmission housing comprises a housing cover arranged in the longitudinal direction on a side, facing away from the transmission input shaft, of the transmission control device and of the at least one part of the power electronics system.