A drive train for an electric truck includes a gearbox and a gear box housing. The drive train further includes an output shaft extending in an axial direction across a wall of the gear box housing and powering a cardan shaft arranged outside of the gear box housing. At least one output gear is arranged inside of the gear box housing on the output shaft. At least a first and a second electric motor attached to the housing of the gearbox form a team of electric motors, wherein each electric motor includes a drive shaft extending parallel to the axial direction and being interconnected via an input gear to an output gear.

A vehicle includes a main drive unit, a sub drive unit, and a control unit. The main drive unit includes a main drive rotary electric machine. The sub drive unit includes a sub drive rotary electric machine. The control unit includes a driving force distribution ratio setting unit configured to set a driving force distribution ratio between the main driving force and the sub driving force and is configured to control the outputs of the main drive unit and the sub drive unit so that the main driving force and the sub driving force have the driving force distribution ratio set by the driving force distribution ratio setting unit. The driving force distribution ratio setting unit is configured to set the driving force distribution ratio to minimize electric power loss of the vehicle based on a vehicle speed of the vehicle and a required driving force of the vehicle.

A vehicle includes a main drive unit, a sub drive unit, and a control unit. The main drive unit includes a main drive rotary electric machine. The sub drive unit includes a sub drive rotary electric machine. The control unit includes a driving force distribution ratio setting unit configured to set a driving force distribution ratio between the main driving force and the sub driving force and is configured to control the outputs of the main drive unit and the sub drive unit so that the main driving force and the sub driving force have the driving force distribution ratio set by the driving force distribution ratio setting unit. The driving force distribution ratio setting unit is configured to set the driving force distribution ratio to minimize electric power loss of the vehicle based on a vehicle speed of the vehicle and a required driving force of the vehicle.

Provided is an off-road robot, including a front side portion, a rear side portion and a middle portion. The front side portion includes a front vehicle frame, a front wheel and a first driving system; the front wheels and the first driving system are disposed at the front vehicle frame; and the first driving system drives the front wheels. The rear side portion includes a rear vehicle frame, a rear wheel and a second driving system; the rear wheel and the second driving system are disposed at the rear vehicle frame; and the second driving system drives the rear wheels. The middle portion includes a first frame and a second frame; the first frame and the second frame are detachably connected; the front vehicle frame is connected with the first frame; and the rear vehicle frame is connected with the second frame.

Provided is an off-road robot, including a front side portion, a rear side portion and a middle portion. The front side portion includes a front vehicle frame, a front wheel and a first driving system; the front wheels and the first driving system are disposed at the front vehicle frame; and the first driving system drives the front wheels. The rear side portion includes a rear vehicle frame, a rear wheel and a second driving system; the rear wheel and the second driving system are disposed at the rear vehicle frame; and the second driving system drives the rear wheels. The middle portion includes a first frame and a second frame; the first frame and the second frame are detachably connected; the front vehicle frame is connected with the first frame; and the rear vehicle frame is connected with the second frame.

A magnetically de-coupled, separately controlled, electric machine assembly including a radial and one or more axial electric machines, each with rotors mechanically coupled to and arranged to directly drive a single shaft. Each of the electric machines are independently, but cooperatively, controlled by an inverter unit that includes one or more inverters. The axial and radial electric machines are contained in a single housing.

A magnetically de-coupled, separately controlled, electric machine assembly including a radial and one or more axial electric machines, each with rotors mechanically coupled to and arranged to directly drive a single shaft. Each of the electric machines are independently, but cooperatively, controlled by an inverter unit that includes one or more inverters. The axial and radial electric machines are contained in a single housing.

A transmission assembly for a powertrain of a vehicle, includes, a control device and a transmission housing for housing a transmission, the control device mountable to the transmission housing and including a transmission mounting surface adapted to face the transmission housing, the transmission housing including a control device mounting surface adapted to face the control device, one of the transmission mounting surface and the control device mounting surface including a groove including at least a first and a second step deeper than the first step, and the other of the transmission mounting surface and the control device mounting surface including an outwardly extending guiding member configured to be received in the groove, configured so that the outwardly extending guiding member can slide in the first step until it reaches the second step, whereafter the transmission mounting surface can be moved towards the control device mounting surface or vice versa.

A transmission assembly for a powertrain of a vehicle, includes, a control device and a transmission housing for housing a transmission, the control device mountable to the transmission housing and including a transmission mounting surface adapted to face the transmission housing, the transmission housing including a control device mounting surface adapted to face the control device, one of the transmission mounting surface and the control device mounting surface including a groove including at least a first and a second step deeper than the first step, and the other of the transmission mounting surface and the control device mounting surface including an outwardly extending guiding member configured to be received in the groove, configured so that the outwardly extending guiding member can slide in the first step until it reaches the second step, whereafter the transmission mounting surface can be moved towards the control device mounting surface or vice versa.

A dual-mode electric drive axle with torque parallel coupling and torque vectoring, including: a main motor, an auxiliary motor, a spur gear differential, a first half shaft, a second half shaft, a primary reducer, a secondary reducer, a dual-planetary gear set mechanism, a first clutch, a second clutch and a primary housing. The main motor and the auxiliary motor are respectively connected to input ends of the primary reducer and the secondary reducer. Output ends of the primary reducer and the secondary reducer are respectively connected to a housing of the spur gear differential and a gear ring of the dual-planetary gear set mechanism. A planet carrier of the dual-planetary gear set mechanism is connected to a sun gear through a first clutch, and a gear ring through a second clutch. A characteristic parameter of the dual-planetary gear set mechanism is 2.