US 11,807,102 B2
Gear unit and powertrain for a vehicle
Michael Wechs, Weißensberg (DE); Fabian Kutter, Kressbronn (DE); Thomas Martin, Weissensberg (DE); and Oliver Schaudt, Cologne (DE)
Assigned to ZF FRIEDRICHSHAFEN AG, Friedrichshafen (DE)
Filed by ZF FRIEDRICHSHAFEN AG, Friedrichshafen (DE)
Filed on Jul. 28, 2022, as Appl. No. 17/876,115.
Claims priority of application No. 10 2021 208 557.1 (DE), filed on Aug. 6, 2021.
Prior Publication US 2023/0078446 A1, Mar. 16, 2023
Int. Cl. B60K 6/365 (2007.10); B60K 6/547 (2007.10)
CPC B60K 6/365 (2013.01) [B60K 6/547 (2013.01)] 14 Claims
OG exemplary drawing
 
1. A gear unit for a powertrain of an at least partially electrically driven vehicle, comprising:
a housing;
a first planet carrier;
a stepped planetary gearset having:
a first sun gear;
a first ring gear fixedly connected with respect to rotation to an output shaft of the gear unit;
a second ring gear is fixedly connected with respect to rotation to the housing; and
a plurality of stepped planet gears rotatably mounted at the first planet carrier;
a first gear shifting element configured to drivingly connect the first sun gear to an electric machine in a closed state; and
a second gear shifting element configured to drivingly connect the first planet carrier to the electric machine in a closed state;
wherein one of the first gear shifting element and the second gear shifting element is in the closed state for driving the output shaft in rotation; and
a differential that drivingly connects the gear unit to two driven shafts arranged coaxial to an output axis,
wherein the differential is an integral differential comprises:
a second planetary gearset configured to transmit a first output torque to a first driven shaft; and
a third planetary gearset drivingly connected to a respective driven shaft,
wherein a supporting torque of the second planetary gearset is convertible in the third planetary gearset such that a second output torque corresponding to the first output torque is transmittable to a second driven shaft.