The utility model relates to a
welding strip folding type photovoltaic module, which comprises battery pieces, and adjacent battery pieces are connected through a
welding strip along the main grid direction of the battery pieces to form a battery piece string. A
welding strip led out from one end of the battery piece string is a positive
electrode and is connected through a positive
electrode bus bar; the welding strips led out from the other ends of the battery piece strings are cathodes and are connected through a
cathode bus bar, and the welding strips at the two ends of the battery piece strings are bent by 180 degrees, so that the
anode bus bar and the
cathode bus bar are positioned on the back surfaces of the battery pieces; the part, bent to the back face of the battery piece, of the welding strip is separated from the back face of the battery piece through an insulating filler strip, or the parts, bent to the back face of the battery piece, of the welding strip are separated through insulating filler strips. According to the arrangement, the front power generation area of the photovoltaic module is increased, and the efficiency of the photovoltaic module is improved; the design and the use of the bus bar are more flexible, the bus bar with enough sectional area can be used for converging, the
electron collection capability can be improved to a certain extent, and the
assembly power and the
assembly efficiency are improved.