In one illustrative embodiment, a wind-driven charging system includes a wind-driven rotation device coupled to a rotatable shaft, and a plurality of electric generators disposed at different longitudinal locations along the rotatable shaft and each of the plurality of electric generators are rotationally driven simultaneously by the rotatable shaft. By having the electric generators disposed at different longitudinal locations, more electric generators may be simultaneously driven by a common shaft. In some instances, a controller may be configured to enable more of the electric generators to provide electrical current to recharge a battery when the speed of rotation of the rotatable shaft increases, and may disable more of the plurality of electric generators to not provide electrical current when the speed of rotation of the rotatable shaft decreases.

The invention discloses a shepherd unmanned aerial vehicle device comprising an unmanned aerial vehicle rack, a rotor wing device, a power supply device, a shepherd device and an unmanned aerial vehicle control host arranged in the unmanned aerial vehicle rack; said rotor wing device comprises first rotor wing mechanisms and second rotor wing mechanisms which are arranged on the unmanned aerial vehicle rack; the power supply device comprises lithium batteries, wind power generation wheel wing mechanisms and a solar panel; said lithium battery is arranged at the upper end of the unmanned aerial vehicle rack; the shepherd device comprises a power grid mechanism, an infrared scanning mechanism and a camera; by the way of detecting flocks of sheep via the camera and the infrared scanning mechanism on the unmanned aerial vehicle rack, the power grid mechanism reaches the effect of controlling the flocks of sheep within working range.

An energy generation and accumulation system includes a housing having a first portion and a second portion, the second portion being environmentally sealed from the first portion, the first portion having an air inlet portion and an air outlet portion, the second portion having first and second sealed compartments, a power generation device providing; an air catching device disposed within the first portion, the air catching device for creating an axial rotational force on a first end of a shaft coupled to the air catching device. A generator for creating an electrical output and an accumulator disposed within the second sealed compartment for storing the electrical output of the generator is provided along with electronics for receiving, controlling and conditioning the output energy of the generator. The energy generation and accumulation system is capable of charging the accumulator while the system is in motion and while stationary.

An energy generating and storage system used with an electric vehicle, having batteries, and at least one accumulator charging means connected to the batteries. The accumulator charger includes at least one alternator or generator and air induction turbines. Each air induction turbine includes a free-wheeling member in induction communication with the alternator or generator. Rotation of the free-wheeling members results in rotation of a rotating member in communication with the alternator or generator for producing electrical energy. The air induction turbines are preferably mounted at a front-end location of the vehicle, such as the vehicle's front grill. Air flowing through the free-wheeling members results in rotation of the free-wheeling members and production of the electric energy supplied to the vehicle's motor.

A solar collector includes a roller rotatably attached to a vehicle. A carrier fabric panel is attached on one end to the roller. Side guides are attached the sides of the carrier fabric panel. Solar cells are connected in series and are attached to the carrier fabric panel. The solar cells are connected to an electrical power storage system. Electrical leads are attached to the carrier fabric and electrically coupled to the solar cells. Electrical conductors are attached to the carrier fabric between the solar cells and the right and left guides or are provided with retainer strips. A slip ring connector is disposed on the roller for electrically coupling the electrical conductors to an electrical power storage system. The solar energy collected may be used to power actuatable accessories or passive systems that may draw power when the vehicle is not being operated.

The present disclosure provides a battery system and a controlling method of the same. The battery system includes a plurality of rechargeable battery packs, and includes a first battery pack that is rechargeable, a second battery pack that is rechargeable independently of the first battery pack, a first switching element that switches the first battery pack between at least a charging node and a discharging node, a second switching element that switches the second battery pack between at least the charging node and the discharging node, and a controller that controls switching states of the first switching element and the second switching element based on usage states and states of charge of the first battery pack and the second battery pack, and thus it is possible to effectively charge a high capacity and high output battery pack.

A solar energy utilization apparatus for installation on a road includes a mounting frame and solar cells. The mounting frame includes a top support and two lateral mounting legs connected to both sides of the top support, the top support is configured to face the road, and the lateral mounting legs respectively are installed on both sides of the road. The solar cells are arranged on the top support, each of the solar cells has a light receiving surface that is tilted downward, toward a same side of the road at a substantially same angle thereby facing an orientation where sunlight intensity is greater. The invention does not occupy farmland and other green vegetation areas. More importantly, such a configuration can provide a huge installation site for solar energy utilization apparatus, which meets the rapid development of the solar energy industry in the future.

An aircraft with the capability of taxiing with main engines off uses the energy stored in a mechanical flywheel to power a propulsor(s) providing taxiing thrust. The flywheel can store energy generated by the propulsor operating as a wind turbine and/or by a power turbine in fluid coupling with the exhaust of a gas turbine engine and/or an expansion turbine operating with bleed and/or APU air.

An electric vehicle charging station comprises a direct current (DC) bus configured to receive DC power from multiple power sources including at least one battery energy storage system (BESS); at least one electric vehicle charging stall connected to the DC bus and configured to charge an electric vehicle load; and a controller configured to monitor and control power flow from the DC bus to the at least one electric vehicle charging stall and to monitor and control power flow between the BESS and the DC bus.

A transportation vehicle may be equipped with electrical energy harvesting systems to harvest electrical energy for use. By way of example, in the transportation vehicle, a Venturi system may be used to receive an air flow and the speed of the air flow increase in a constricted area of the Venturi system, the air flow containing a large amount of kinetic energy. A plurality of electrical energy harvesting systems is disposed in the Venturi system and is configured to convert the kinetic energy contained in the accelerated air flow into electrical energy that can be used to power on-board electronics as well as one or more on-board batteries in the transportation vehicle, as the transportation vehicle is in motion.