Abstract: The invention discloses a cattle shed, comprising a cattle bedding, a feeding channel, a fixed roof, a movable roof, a feeding trough, a peripheral rail fence, and a rail fence gate, wherein the cattle bedding is provided with no dividers and needs no hardening and daily manure cleaning, which is merged with playground and enclosed. The feeding channel is hardened and higher than the cattle bedding, the fixed roof and the movable roof cover the cattle bedding and the feeding trough, the peripheral rail fence and the rail fence gate surround the cattle bedding and the feeding trough, and the fixed roof and the movable roof are arranged in a slope mode, and the movable roof can be opened to allow sunlight to enter and exchange air to form convection. The cattle shed of the present invention can reduce the construction cost, open the movable roof, effectively utilize the sunlight and the air convection, ensure a complete rain-sewage separation, and realize zero discharge of manure and sewage.

Abstract: The invention discloses a cattle shed, comprising a cattle bedding, a feeding channel, a fixed roof, a movable roof, a feeding trough, a peripheral rail fence, and a rail fence gate, wherein the cattle bedding is provided with no dividers and needs no hardening and daily manure cleaning, which is merged with playground and enclosed. The feeding channel is hardened and higher than the cattle bedding, the fixed roof and the movable roof cover the cattle bedding and the feeding trough, the peripheral rail fence and the rail fence gate surround the cattle bedding and the feeding trough, and the fixed roof and the movable roof are arranged in a slope mode, and the movable roof can be opened to allow sunlight to enter and exchange air to form convection. The cattle shed of the present invention can reduce the construction cost, open the movable roof, effectively utilize the sunlight and the air convection, ensure a complete rain-sewage separation, and realize zero discharge of manure and sewage.

Abstract: A power supply and distribution device for solar-powered aircraft includes at least two power supply and distribution sub-systems having same configurations. A disconnection of an electrical connection between a plurality of components of each power supply and distribution sub-system can be controlled through a first switch. An electrical connection between the same components of the power supply and distribution sub-systems can be established by controlling a second switch. The power supply and distribution device for solar-powered aircraft has a centralized-distribution design. Specifically, each power supply and distribution sub-system is designed in a centralized mounting manner and has separated power supply and power distribution functions that can work separately.

Abstract: A power supply and distribution device for solar-powered aircraft includes at least two power supply and distribution sub-systems having same configurations. A disconnection of an electrical connection between a plurality of components of each power supply and distribution sub-system can be controlled through a first switch. An electrical connection between the same components of the power supply and distribution sub-systems can be established by controlling a second switch. The power supply and distribution device for solar-powered aircraft has a centralized-distribution design. Specifically, each power supply and distribution sub-system is designed in a centralized mounting manner and has separated power supply and power distribution functions that can work separately.