Vehicles and systems for modular power source storage. A vehicle may include a power source detachable from the vehicle. The power source may supply power to the vehicle and a remote device. The vehicle may further include a cargo bed that stores the power source. The cargo bed or a portion of the cargo bed may be removable from rest of the vehicle along with the power source.

A power regeneration system of a work vehicle includes: a first generator (12) and a second generator (31) that are driven by an engine (11); a first electric circuit (C1) for supplying electric power to traveling motors (10L, 10R); a second electric circuit (C2) for supplying electric power to an auxiliary device (35); a voltage step down converter (21) providing electric power from the first electric circuit to the second electric circuit; and a controller (51) that determines whether a travel mode of the work vehicle is a powering mode or a regeneration mode in order to control driving of the voltage step down converter. If the travel mode is the regeneration mode, the controller provides the regenerative power from the first electric circuit through the voltage step down converter to the second electric circuit, in order to drive the auxiliary device with the regenerative power.

The present invention relates to new energy vehicle field, and more particularly to a vehicle-mounted photovoltaic power generation device for large vehicles. at present, large-scale new energy vehicles such as buses, passenger carriage, trucks, and touring car, use photovoltaic power generation technology with fixed brackets to increase their cruising range, however, due to its low power generation and untraceable defects, it is a technical problem that needs to be solved urgently in the field of new energy vehicles. the invention provides a vehicle-mounted fixed type and tracking type integrated technology is not only enhances wind resistance, but also improves power generation efficiency, and builds a 2-dimensional tracking photovoltaic power generation device without photoelectric sensors, compared with products that cannot track, the solar power generation of the present invention is increased by more than 40% on average.

The disclosure relates to a method for operating a drive train of a working machine, wherein the drive train comprises a working drive and a travel drive. The working drive is driven by a first electric motor and the travel drive is driven by a second electric motor. The disclosed method includes that the travel drive is additionally driven by the first electric motor if at least one performance criterion of said travel drive has been met. The disclosure further relates to a corresponding drive train and to a working machine.

A storage system includes at least one vehicle, a horizontal rail grid, and a charging system for charging a rechargeable power source of the vehicle. The vehicle includes a first set of wheels and a second set of wheels for moving the vehicle upon the rail grid. The first set of wheels is displaceable in a vertical direction between a first position, a second position, and a third position. The first set of wheels may move the vehicle in a first direction. The first and the second set of wheels are in contact with the rail grid. The second set of wheels may move the vehicle in a second direction perpendicular to the first direction. The charging system includes at least two charge-receiving elements arranged on the vehicle and connected to the power source, and a charging station including two charge-providing elements connected to a charging power source. The charging station includes an actuator operatively connected to the charge-providing elements and arranged to move the charge-providing elements in a vertical direction, such that the charge-receiving elements may be connected with the charge-providing elements when the vehicle is positioned above the charging station.

An example battery swap system may include a battery transport. The battery transport may include a support frame, a connector coupled to the support frame and configured to connect to a powered vehicle for moving the battery transport, and a battery carriage movably coupled to the support frame and configured to horizontally carry a battery from a transport supported position to a tractor received position.

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 method of designing a machine on which a drive motor, a fuel cell stack, and a secondary battery are mounted includes: determining a maximum output of the drive motor to be a first output value and an output of the drive motor when a vehicle travels under a cruise condition to be a second output value; determining the number of fuel cell stacks to be mounted to be n; and determining a maximum output of the secondary battery to be a value obtained by subtracting a value obtained by multiplying a maximum output of the fuel cell stack by the n, from the first output value. A value obtained by multiplying the third output value by the n is equal to or larger than the second output value, and a value obtained by multiplying the third output value by (n−1) is less than the second output value.

A delivery truck for transporting a vehicle includes a chassis, a tractive element coupled to the chassis, a prime mover configured to drive the tractive element to propel the delivery truck, a bed coupled to the chassis and configured to support the vehicle, and a wireless charging interface coupled to the bed and configured to wirelessly transfer energy to the vehicle.

A system and method for operating a transport refrigeration system including: a trailer system including a vehicle connected to a transport container; an electric generation device operably connected to a wheel axle of the trailer system, the electric generation device configured to rotate at an operating frequency, and to generate electrical power from the rotational energy of the wheel axle for charging an energy storage device when the electric generation device is activated; an energy management system for providing power to the transportation refrigeration unit of the trailer system, the energy management system including an energy controller in communication with at least one of the electric generation device and the energy storage device, wherein the energy controller is configured to modify the operation of the electric generation device when the operating frequency of the electric generation device is equal to or less than an energy controller operating limit.