US 12,030,384 B1
Hybrid drive system and vehicle
Jonathan Zeibig, Aalen (DE); Carsten Gitt, Stuttgart (DE); Tobias Schilder, Ludwigsburg (DE); and Peter Hahn, Stuttgart (DE)
Assigned to MERCEDES-BENZ GROUP AG, Stuttgart (DE)
Appl. No. 18/290,343
Filed by MERCEDES-BENZ GROUP AG, Stuttgart (DE)
PCT Filed Apr. 12, 2022, PCT No. PCT/EP2022/059773
§ 371(c)(1), (2) Date Nov. 13, 2023,
PCT Pub. No. WO2022/238075, PCT Pub. Date Nov. 17, 2022.
Claims priority of application No. 10 2021 002 533.4 (DE), filed on May 14, 2021.
Int. Cl. B60K 6/36 (2007.10); B60K 6/365 (2007.10); B60K 6/387 (2007.10); B60K 6/48 (2007.10)
CPC B60K 6/365 (2013.01) [B60K 6/387 (2013.01); B60K 6/48 (2013.01)] 10 Claims
OG exemplary drawing
 
1. A hybrid drive system, comprising:
an internal combustion engine;
an electric engine; and
a transmission comprising
at least one layshaft;
a first spur gear section and a second spur gear section, which provide output via the at least one layshaft; and
a four-shaft planetary transmission, which has a first planetary gear set having a first sun gear, a first planetary carrier and a first annular gear, and a second planetary gear set having a second sun gear, a second planetary carrier and a second annular gear, wherein
the first annular gear is coupled with or is couplable with a crankshaft of the internal combustion engine,
the first sun gear is permanently connected to the second annular gear in a manner fixed against rotation,
a rotor of the electric engine is coupled with or is couplable with the second annular gear in a manner fixed against rotation,
the first planetary carrier is permanently connected to the second planetary carrier in a manner fixed against rotation,
a first input shaft of the first spur gear section, which is rotatable around a main axis of rotation, is connected to the second planetary carrier in a manner fixed against rotation,
a second input shaft of the second spur gear section, which is rotatable around the main axis of rotation, is connected to the second sun gear in a manner fixed against rotation,
the first and the second spur gear sections respectively have exactly one spur gear pairing, and
the four-shaft planetary transmission further comprises a blocking switch element configured to connect two of the four shafts of the planetary transmission in a manner fixed against rotation.