Methods and systems are provided for a coupling device for a tractor and a trailer. In one example, a system, comprising a tractor comprising an engine, a motor, and an electrical energy storage device, a trailer comprising a battery bank and a power distribution unit, and a coupling configured to fixedly couple the trailer to the tractor and to electrically couple the power distribution unit to the electrical energy storage device.

A method is disclosed. The method includes producing a first electrical current using a power source, charging a first power storage using the first electrical current, selectively powering a first power component using the first power storage, and driving a mechanical component using the first power component. The method also includes driving a second power component using the mechanical component, producing a second electrical current using the second power component that is driven by the mechanical component, charging a second power storage using the second electrical current, and selectively powering the first power component using the second power storage.

A system for recharging power storage devices on a watercraft is disclosed herein. The system for recharging power storage devices on a watercraft includes a shell, at least one linear channel fixedly mounted inside the shell, a turbine having at least one rotor, one shaft connected to the rotor, and a generator. The system for recharging power storage devices on a watercraft is useful for converting the rotational energy provided by the water flowing past the turbine rotor into electrical energy to charge a power storage device on a watercraft.

There is provided a highly reliable storage battery apparatus which can diagnose the status of a temperature detection unit and a cooling unit. In the storage battery apparatus comprising a battery module including one or more batteries, a plurality of temperature detection units and a cooling unit cooling the battery module, the temperature detection units measure, at least, the temperature of the cooling medium inputted to the storage battery apparatus, the temperature of the cooling medium outputted from the storage battery apparatus, and the temperature of at least one of the batteries and the battery module.

In an electric vehicle having a primary battery powered source of energy with a primary electric motor driven and connected to one or more ground engagement wheels of the electric vehicle, has a device called a sprocket used for collecting energy form the inner rim edge of the rear wheel of the electric vehicle. This sprocket mechanism device collects this energy then transfers that energy to alternators one and two on its mounted framework in the trunk compartment by way of a chain. The two alternators with its sitting pilot voltages, then transfer it by required electrically conductive cables sending energy to the battery bank source thus completing the on board charging system cycle.

An air-guiding device which is arranged in a top rear region of a vehicle and includes an air-guiding element which is shiftable from a retracted inoperative position to an extended operating position, wherein, in both positions, the air-guiding element serves for guiding air in the rear region of the motor vehicle. At least one propeller of the air-guiding device which, together with the air-guiding element, is shiftable between the retracted and extended positions, wherein the propeller, in the extended operating position, is fixable in a first operating state, wherein the at least one propeller, in the extended operating position, is operable in a second operating state in order to produce a throughflow in the direction of travel, and wherein the at least one propeller, in the extended operating position, is operable in a third operating state in order to produce a throughflow opposed to the direction of travel.

A rotatable LIDAR device including contactless electrical couplings is disclosed. An example rotatable LIDAR device includes a vehicle electrical coupling including (i) a first conductive ring, (ii) a second conductive ring, and (iii) a first coil. The example rotatable LIDAR device further includes a LIDAR electrical coupling including (i) a third conductive ring, (ii) a fourth conductive ring, and (iii) a second coil. The example rotatable LIDAR device still further includes a rotatable LIDAR electrically coupled to the LIDAR electrical coupling. The first conductive ring and the third conductive ring form a first capacitor configured to transmit communications to the rotatable LIDAR, the second conductive ring and the fourth conductive ring form a second capacitor configured to transmit communications from the rotatable LIDAR, and the first coil and the second coil form a transformer configured to provide power to the rotatable LIDAR.

A solar thin film power generation device for a two-wheeled vehicle comprising a housing, and a thin film solar assembly, wherein the thin film solar assembly is rolled-up and arranged within the housing when in a rolled-up state, and wherein length of the thin film solar assembly is capable of being adjusted through a rotating device when in an unrolled state, wherein the thin film solar assembly further comprising a voltage conversion mechanism arranged within the housing, and wherein the thin film solar assembly is used for reversely charging a battery through the voltage conversion mechanism, wherein the device is capable of being switched between a rolled-up state and an unrolled state.

A method for operating a charging station for charging a plurality of electric vehicles, in particular electric cars, wherein the charging station is connected at a grid connection point to an electrical supply grid in order to be supplied with electrical energy from the electrical supply grid via said grid connection point, comprising the steps of drawing electrical energy from the electrical supply grid and charging one or more electric vehicles using the electrical energy drawn from the electrical supply grid, wherein the charging station is controlled in such a way that the electrical supply grid is electrically supported.

The present disclosure discloses an energy management system suitable for a solar-powered unmanned aerial vehicle and a control method thereof, which are used for an aerospace vehicle energy system. The system comprises a photovoltaic module, an MPPT controller, a first DC-DC circuit, a battery pack, a first anti-reverse circuit, a second DC-DC circuit, a second anti-reverse circuit, an ESC, a BLDC, an on-board controller, a communication link and a voltage stabilizing module. During cruising, the battery pack directly supplies power to the ESC through the first anti-reverse circuit; when high-power power output is needed, the battery pack supplies power to the ESC through the second DC-DC circuit and the second anti-reverse circuit in sequence, wherein the output voltage of the second DC-DC circuit and the accelerator signal input of the ESC are controlled by the on-board controller.