An electrified vehicle include a chassis, a front axle coupled to the chassis, a rear axle coupled to the chassis, an electric motor supported by the chassis, and a trailer coupled to a rear end of the chassis and configured to be towed by the electrified vehicle. The electric motor is configured to drive at least one of the front axle, the rear axle, or a component of the electrified vehicle. The trailer includes a trailer frame, a trailer axle coupled to the trailer frame, and an energy storage device supported by the trailer frame. The energy storage device includes a plurality of batteries. The energy storage device configured to power the electric motor.

An electrified vehicle include a chassis, a front axle coupled to the chassis, a rear axle coupled to the chassis, an electric motor supported by the chassis, and a trailer coupled to a rear end of the chassis and configured to be towed by the electrified vehicle. The electric motor is configured to drive at least one of the front axle, the rear axle, or a component of the electrified vehicle. The trailer includes a trailer frame, a trailer axle coupled to the trailer frame, and an energy storage device supported by the trailer frame. The energy storage device includes a plurality of batteries. The energy storage device configured to power the electric motor.

A drive device for driving wheels of a motor vehicle includes a housing, an electric machine with a stator and rotor, a first output shaft for driving a first wheel, and a second output shaft for driving a second wheel. Via a differential transmission, first and second planetary gearsets are drivable by the rotor. First and second differential shafts transfer drive power from the differential transmission to the first and second planetary gearsets. The first differential shaft is mounted rotatably on an input shaft via bearings and the rotor is connected non-rotationally to the input shaft. A stable and non-buckling bearing of the second differential shaft in relation to the rotor is carried out via further bearings arranged on the second differential shaft or in the first differential shaft. The further bearings are arranged spaced apart from one another at least at a distance of twice an average bearing diameter.

A power transmission device includes a motor, a gear mechanism connected downstream of the motor and lubricated by oil, and a box. The box has a wall part that covers an outer circumference of the gear mechanism, and a jacket part that covers an outer circumference of the wall part. A cooling chamber, in which cooling liquid is introduced, is formed between the wall part and the jacket part. The cooling chamber includes a portion that overlaps with the gear mechanism when seen from a radial direction, and a portion that overlaps the gear mechanism when seen from an axial direction.

A gear unit for a powertrain and gear unit having a stepped planetary gearset, a first gear shifting element and a second gear shifting element. The stepped planetary gearset has a first sun gear, a first ring gear, a second ring gear, and a plurality of stepped planet gears rotatably mounted at a first planet carrier. The first sun gear is connected to an electric machine. The first planet carrier is fixedly connected to a housing with respect to rotation. The first gear shifting element connects the second ring gear to an output shaft of the gear unit in a closed state, and the second gear shifting element connects the first ring gear to the output shaft of the gear unit in a closed to state, and one of the two gear shifting elements) is in the closed state for driving the output shaft in rotation.

A wheel hub drive system includes a drive motor with a drive shaft, an input planetary gear set (PGS), an output PGS and an intermediate PGS. Each PGS includes a sun gear, a planet carrier and planet gears provided upon the planet carrier. The drive shaft is rotationally fixed with the sun gear of the input PGS. The planet carrier of the input PGS is rotationally fixed with the sun gear of the intermediate PGS, and the planet carrier of the intermediate PGS is rotationally fixed with the sun gear of the output PGS. The planet carrier of the output PGS is adapted to be rotationally fixed with a rim of a wheel. The output PGS is provided axially in-between the input PGS and the intermediate PGS.

A vibration-reducing portal box assembly for mounting a wheel of an off-road vehicle includes a housing with a receptacle adapted to receive a stock axle shaft of an off-road vehicle, an output shaft operably connectable to a stock axle received in the housing and effective to rotate upon rotation of said stock axle, and a wheel hub having a central opening adapted to receive said output shaft, and adapted to turn a wheel mounted to said wheel hub upon rotation of said output shaft. The output shaft has a tapered portion connecting its proximal end to its distal end. The wheel hub has a tapered portion adapted to matingly receive the tapered portion of the output shaft. The output shaft may be connected to the stock axle shaft by a geared linking mechanism.

A universal driving device includes a sun gear rotatably provided, a ring gear, wherein a rotation axis of the ring gear is moved relative to a rotation axis of the sun gear in a plane of rotation parallel to a plane of rotation of the sun gear, at least one gear train configured to allow relative motion between the rotation axes of the sun gear and the ring gear and to form a continuous power transmission state between the sun gear and the ring gear, and at least one balance gear engaged with the ring gear.

A slip control method and arrangement for a drivetrain including a continuously variable transmission, forward-reverse clutch arrangement and an optional three-speed gearbox is described herein. The forward-reverse clutch arrangement includes a clutch that is so controlled as to slip when a torque higher than the usable torque attempts to pass through. Accordingly, the clutch prevents the prime mover from stalling.

Disclosed herein is an apparatus for driving rear-wheels of an environment-friendly vehicle. The apparatus for driving rear-wheels may include: a rear-wheel driver including a first motor and a second motor configured to respectively drive first and second rear wheels; a rear-wheel reducer configured to decelerate drive forces of the first and second motors and transmit the respective decelerated drive forces to the first and second rear wheels; a brake configured to releasably fix the rear-wheel reducer to a vehicle body; and a controller configured to control the rear-wheel driver, the rear-wheel reducer, and the brake. The rear-wheel reducer may include: a first planetary gear set disposed between an output end of the first motor and the first rear wheel; a second planetary gear set disposed between an output end of the second motor and the second rear wheel; and a ring gear coupled to the first and second planetary gear sets.