US 12,036,866 B2 · Methods and systems for an electric drive arrangement

Abstract

Various methods and systems are provided for a drive arrangement for a vehicle including a housing, a double planetary gear set partially or fully contained within the housing, an input shaft selectively engaged with the double planetary gear set, a first clutch assembly coupled to the input shaft and selectively engaged with the double planetary gear set, a second clutch assembly coupled to the input shaft and selectively engaged with the double planetary gear set, and a sliding spline coupled to the input shaft and selectively engaged with the double planetary gear set. The double planetary gear set including a first sun gear, a second sun gear, a first set of planetary gears, a second set of planetary gears, a planetary gear carrier, and a ring gear, wherein components of the double planetary gear set are lockable thereby providing three different gear ratios.

Claims18

Dependent claims

An electric drive system in an electric vehicle (EV), comprising:

a double planetary gear set;
an input shaft selectively engaged with the double planetary gear set and configured to receive torque from an electric motor;
a first clutch configured to selectively ground a second sun gear in the double planetary gear set;
a second clutch configured to selectively ground a carrier in the double planetary gear set;
and
a sliding spline configured to selectively engage and disengage a first sun gear in the double planetary gear set with the input shaft;
wherein the electric motor is designed rotate in a first direction to operate the electric drive system in a forward direction;
wherein the electric motor is designed to rotate in a second direction which is opposite the first direction to operate the electric drive system in a reverse direction;
wherein the first clutch and the second clutch are configured to shift between at least three discrete gear ratios;
and
wherein the second clutch is interposed by the first clutch and the double planetary gear set.

8 more elements

Dependencies are inferred from the claim text.

Methods and systems for an electric drive arrangement

Life of this patent

Methods and systems for an electric drive arrangement

Life of this patent

Abstract

Claims18