The present invention relates to an electrically driven single-axle tractor for coupling with, and powering of, various pieces of equipment, comprising: a frame; a drive axle, connected to the tractor frame, provided with one pair of wheels; a primary electric motor coupled to the drive axle; at least a secondary electric motor coupled to an equipment drive shaft for releasable coupling with a piece of equipment; and, at least one electrical energy source, as power supply of the primary and secondary electric motor. The invention also provides an assembly of such a tractor and a piece of equipment as well as a method for driving such a tractor.

A substantially slow moving lawnmower capable of slowly mowing a lawn solely depends on the sun power is presented. The lawnmower needs no recharging from any other power source. A small battery is used to regulate the unsteady sun power so that normal mowing operation can be continued for a specific time period depends on the capacity of the battery. The lawnmower operates by itself continuously with least human interruption.

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.

An aeronautical car comprises a ground-travel system including at least one traction device, an air-travel system including at least one flight mechanism configured to be selectively moved between a first position when the aeronautical car is in a driving mode and a second position when the aeronautical car is in a flying mode, and a weather manipulation device. The weather manipulation device may be configured to manipulate at least one aspect of a weather condition while the aeronautical car is in the air.

Disclosed herein is an electric vehicle including a power source, an electric motor adapted to be supplied with electric power from the power source for vehicle driving, a sheet-shaped solar battery for electric power generation, a storing portion for storing the sheet-shaped solar battery in its nonoperating condition, and a connecting unit for allowing the supply of electric power from the sheet-shaped solar battery to at least one of the electric motor and the power source, wherein when the sheet-shaped solar battery is used to perform electric power generation, the sheet-shaped solar battery is taken out of the storing portion and then spread to effect photovoltaic power generation.

The vehicle-mounted power source device comprising: a low-voltage battery; a high-voltage battery; a boost unit that boosts electrical power for charging the high-voltage battery; a solar panel that converts solar light to electrical power; a bi-directional buck-boost unit that boosts/bucks the electrical power converted by the solar panel; and a control unit that performs control in a manner so as to charge the low-voltage battery by means of electrical power of which the voltage has been altered by the buck-boost unit. When the amount of stored electrical power at the low-voltage battery is at least a predetermined value, the control unit performs control in a manner so that the electrical power stored at the low-voltage battery is boosted by the boost unit and the bi-directional buck-boost unit, and the high-voltage battery is charged by means of the boosted electrical power.

The space-expandable and easily transportable caravan according to present invention is a cubical caravan, wherein the caravan has a structure in which both sides expand symmetrically, characterized by: comprising a caravan (100) which has a cubical upper main body (110) having space expandable and collapsible panel unit and a lower main body carrier (120) integrally attached thereunder to support the upper main body (110); the space expandable and collapsible panel unit is expandable from sides comprising external panels (10a, 10b) and internal panels (20a, 20b) on each of side walls of the caravan, wherein each external panel (10a, 10b) comprises roof panel (11a, 11b) which forms an expansion roof by spreading it outwards, and expansion external panel (12a, 12b) which forms an expanded side outer wall, and each of the internal panel (20a, 20b) comprises floor panel (21a, 21b) which forms an expansion floor by spreading it downwards, and expansion side panel (22a and 23a, 22b and 23b) which forms the front and back expanded outer wall. The space-expandable caravan (100) of present invention can be set up by conveniently loading onto a cargo box of a truck by lifting the caravan using four jacks, and easily unloading from the cargo box to a desired place.

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.

A vehicular charging control system using a solar panel includes: a first battery; a calculation unit that calculates a chargeable electric power amount (an amount of electric power with which the first battery can be charged until the SOC of the first battery reaches a predetermined value); a determination unit that determines whether regenerative electric power is being generated; and a control unit that controls charging of the first battery with electric power generated by the solar panel. The control unit allows the first battery to be charged with the electric power generated by the solar panel up to an upper limit set to the chargeable electric power amount when regenerative electric power is not being generated, and up to an upper limit set to an electric power amount obtained by subtracting the regenerative electric power amount from the chargeable electric power amount when regenerative electric power is being generated.

A self-powered laminated switchable glass system. The laminated switchable glass system having an interior and exterior tempered glass layer. A transparent luminescent solar concentrator layer and a switchable glass film layer is disposed between the exterior and interior glass layer. The solar layer provides power to the switchable glass film layer to allow selective opacity of the switchable glass film.