Abstract: A photovoltaic assembly is provided, which includes a plurality of solar cells; a plurality of lead wires, the solar cells are connected in series through the lead wires; a plurality of diodes, each of the solar cells is connected in parallel with one of the diodes, or a specified number of adjacent ones of the solar cells as a whole is connected in parallel with one of the diodes; and a packaging structure, and the solar cells, the lead wires and the diodes are arranged in the packaging structure.

Abstract: A wafer supporting apparatus includes: a first fixed plate and a second fixed plate, a first upper fixing rod and a second upper fixing rod, and a lower fixing rod parallel to and below the first upper fixing rod and the second upper fixing rod. Two ends of the first upper fixing rod are fixedly connected to the first fixed plate and the second fixed plate respectively. Two ends of the second upper fixing rod are fixedly connected to the first fixed plate and the second fixed plate respectively. Two ends of the lower fixing rod are fixedly connected to the first fixed plate and the second fixed plate respectively. The first upper fixing rod and the second upper fixing rod are each provided with a plurality of limiting columns each of which including a cylindrical body and a semispherical end.