A power supply unit, which supplies hydraulic drive motors of a heavy goods vehicle with hydraulic fluid, includes a frame with first connecting elements for operationally fixed mechanical connection to the heavy goods vehicle and second connecting elements for operationally fixed mechanical connection to a further functional unit, a hydraulic pump, which is attached to the frame, can be driven by an assigned electric motor and during operation feeds hydraulic fluid to drive the hydraulic drive motors, and a battery pack, which is attached to the frame and supplies the electric motor with electrical drive power. The hydraulic pump and electric motor are configured in such a way that the hydraulic pump can be operated as a hydraulic motor and the electric motor can be operated as an electric generator.

A vehicle includes a chassis, tractive elements coupled to the chassis, an electric motor coupled to the chassis and coupled to the tractive elements such that the electric motor drives the tractive elements to propel the vehicle, an accessory module coupled to the chassis and coupled to an output of the electric motor. The accessory module is configured to receive mechanical energy provided by the electric motor and provide at least one of electrical energy or fluid energy.

A power supply system (10) is used for supplying power to a power system of an electric tractor and comprises a bracket (100) that is provided above and below a frame of a transport trailer, first cases (200) that are provided on the bracket and first power battery packs that are suspended inside the first case. Each of the first cases is provided with a first ventilation structure and a second ventilation structure (211) so that while the transport trailer is moving, wind can enter the first case from the first ventilation structure and be discharged from the second ventilation structure, thus achieving further cooling and heat dissipation for the first power battery packs and avoiding service life being impacted due to the first power battery pack overheating.

A through-the-road (TTR) hybridization strategy is proposed to facilitate introducing hybrid electric vehicle technology in a significant portion of current and expected trucking fleets. In some cases, the technologies can be retrofitted onto an existing vehicle (e.g., a trailer, a tractor-trailer configuration, etc.). In some cases, the technologies can be built into new vehicles. In some cases, one vehicle may be built or retrofitted to operate in tandem with another and provide the hybridization benefits contemplated herein. By supplementing motive forces delivered through a primary drivetrain and fuel-fed engine with supplemental torque delivered at one or more electrically-powered drive axles, improvements in overall fuel efficiency and performance may be delivered, typically without significant redesign of existing components and systems that have been proven in the trucking industry.

A power supply unit, which supplies hydraulic drive motors of a heavy goods vehicle with hydraulic fluid, includes a frame with first connecting elements for operationally fixed mechanical connection to the heavy goods vehicle and second connecting elements for operationally fixed mechanical connection to a further functional unit, a hydraulic pump, which is attached to the frame, can be driven by an assigned electric motor and during operation feeds hydraulic fluid to drive the hydraulic drive motors, and a battery pack, which is attached to the frame and supplies the electric motor with electrical drive power. The hydraulic pump and electric motor are configured in such a way that the hydraulic pump can be operated as a hydraulic motor and the electric motor can be operated as an electric generator.

A through the road (TTR) hybridization strategy is proposed to facilitate introduction of hybrid electric vehicle technology in a significant portion of current and expected trucking fleets. In some cases, the technologies can be retrofitted onto an existing vehicle (e.g., a truck, a tractor unit, a trailer, a tractor-trailer configuration, at a tandem, etc.). In some cases, the technologies can be built into new vehicles. In some cases, one vehicle may be built or retrofitted to operate in tandem with another and provide the hybridization benefits contemplated herein. By supplementing motive forces delivered through a primary drivetrain and fuel-fed engine with supplemental torque delivered at one or more electrically-powered drive axles, improvements in overall fuel efficiency and performance may be delivered, typically without significant redesign of existing components and systems that have been proven in the trucking industry.

A through the road (TTR) hybridization strategy is proposed to facilitate introduction of hybrid electric vehicle technology in a significant portion of current and expected trucking fleets. In some cases, the technologies can be retrofitted onto an existing vehicle (e.g., a trailer, a tractor-trailer configuration, etc.). In some cases, the technologies can be built into new vehicles. In some cases, one vehicle may be built or retrofitted to operate in tandem with another and provide the hybridization benefits contemplated herein. By supplementing motive forces delivered through a primary drivetrain and fuel-fed engine with supplemental torque delivered at one or more electrically-powered drive axles, improvements in overall fuel efficiency and performance may be delivered, typically without significant redesign of existing components and systems that have been proven in the trucking industry.

An apparatus (e.g., for a vehicle) includes a housing, an oscillation bearing, and a hollow rotor shaft. The housing has a first end and a second end, and includes a first end cap at the first end thereof and a second end cap at the second end thereof. The oscillation bearing is housed within the second end cap. The hollow rotor shaft extends through the housing from the first end to the second end, and has a first shaft end having an interior spline surface, and a second shaft end. The interior spline surface of the hollow rotor shaft is configured to receive a splined end of an internal rear drive shaft and a splined end of a front drive shaft.

One variation of a system includes a bogie including: a chassis; a first set of latches configured to transiently engage a first subset of engagement features, in a first array of engagement features on a left rail and in a second array of engagement features on a right rail of the trailer, to retain the bogie below a floor of the trailer; a driven axle suspended from the chassis; and a motor coupled to the driven axle and configured to output torque to the driven axle and regeneratively brake the driven axle. The system further includes a battery assembly: including a second set of latches configured to transiently engage a second subset of engagement features, in the first array of engagement features and in the second array of engagement features, to retain the battery assembly adjacent the bogie; and configured to receive electrical energy from the motor.

A vehicle includes a chassis including a frame rail extending longitudinally, a tractive element coupled to the chassis, an electric motor coupled to the chassis, a shaft coupling the electric motor to the tractive element such that the electric motor is configured to drive the tractive element to propel the vehicle, the shaft extending longitudinally, and a water pump configured to provide a flow of water in response to receiving mechanical energy provided by the electric motor.