Abstract: A battery charging station includes a power bus, a power supplying unit, a first voltage converting unit and a processor. The power supplying unit receives a first power to generate a second power accordingly and transmits the second power to the power bus as a supplying power of the power bus. The first voltage converting unit is coupled to the power bus and is connected to a first battery removably disposed in the battery station. The processor sets the first voltage converting unit to operate in a first mode or a second mode, the first voltage converting unit in the first mode receives the supplying power from the power bus so as to charge the first battery. The first voltage converting unit in the second mode receives the electrical power from the first battery and generates a second mode power towards the power bus.

Abstract: A battery charging station includes a power bus, a power supplying unit, a first voltage converting unit and a processor. The power supplying unit receives a first power to generate a second power accordingly and transmits the second power to the power bus as a supplying power of the power bus. The first voltage converting unit is coupled to the power bus and is connected to a first battery removably disposed in the battery station. The processor sets the first voltage converting unit to operate in a first mode or a second mode, the first voltage converting unit in the first mode receives the supplying power from the power bus so as to charge the first battery. The first voltage converting unit in the second mode receives the electrical power from the first battery and generates a second mode power towards the power bus.

Abstract: The present invention relates to an assembly chair assembled by plastic board, having a plurality of openings, a plurality of locking tabs, and a plurality of bending lines, and being capable of being bent and locked by hand and manpower for being formed into the assembly chair without any tools, or being capable of disassembling by hand and manpower for being formed into the plastic board without any tools, therefore, the assembly and the disassembly procedure can be easy; besides, the plastic board according to the present invention is flat before assembly, and being able to be stacked up for storage, therefore, the storage capacity of the plastic board is small, and the plastic board would not fall down when being stacked up for storage.

Abstract: The present invention relates to an assembly chair assembled by plastic board, having a plurality of openings, a plurality of locking tabs, and a plurality of bending lines, and being capable of being bent and locked through man hand and manpower for being formed into the assembly chair without any tools, or being capable of disassembling through man hand and manpower for being formed into the plastic board without any tools, therefore, the assembly and the disassembly procedure can be easy; besides, the plastic board according to present invention is flat before assembly, and being able to be stacked up for storage, therefore, the storage capacity of the plastic board is small, and the plastic board would not fall down when being stacked up for storage.