Abstract: Embodiments of the present disclosure provide a method for welding cell strings and a series welding machine. The method includes: forming an arrangement of a plurality of solar cells; inspecting the arrangement of the plurality of solar cells; providing a plurality of initial welding strips including first initial welding strips and second initial welding strips, the first initial welding strips interleave with the second initial welding strips in a first direction; cutting each of the first initial welding strips at first cutting positions, and cutting each of the second initial welding strips at second cutting positions, to obtain a plurality of welding strips; moving each welding strip in a second direction to form a set of welding strips; transferring the set of welding strips onto the arrangement of the plurality of solar cells; and welding the plurality of welding strips to corresponding solar cells to form a cell string.

Abstract: The present disclosure provides a functional part, a photovoltaic module and a method of manufacturing photovoltaic modules. The functional part is configured to form a photovoltaic module with a cell string that includes a plurality of cells. Adjacent cells of share an overlapped region. The functional part has a first surface facing the cell string and a second surface opposite to the first surface. The functional part includes at least one groove extending from the first surface toward the second surface. A location of each groove corresponds to a location of at least one overlapped region.

Abstract: A method for visual inspection of a photovoltaic module, including: turning on a first light source located above the photovoltaic module, and recording, by an image collector, first coordinates and second coordinates of edge intersections at ends of the film strips; turning on a second light source located below the photovoltaic module, and recording, by the image collector, third coordinates and fourth coordinates of overlapping points among edges of the solar cells, the ends of the film strips, and the cell gaps or the string gaps; and analyzing, by the image collector, differences between the first coordinates and the third coordinates and between the second coordinates and the fourth coordinates along width directions of the cell gaps or the string gaps, wherein the differences are overlap spacings between the film strips and the solar cells.

Abstract: A back-contact photovoltaic module and a manufacturing method thereof. The back-contact photovoltaic module includes a glass substrate, an upper adhesive film layer, a solar cell layer, a lower adhesive film layer, and a back sheet arranged in sequence from top to bottom. The solar cell layer includes a plurality of back-contact solar cells, and each of the plurality of back-contact solar cells comprises a front surface provided with a transparent support layer. The transparent support layer protrudes from a corresponding front surface, and the transparent support layer covers a partial region of the corresponding front surface. Accordingly, the front surface of each of the plurality of back-contact solar cells can be protected, and the risk of scratches to the back-contact photovoltaic module reduced.

Abstract: Provided are a photovoltaic module, comprising a solar cell string having a plurality of solar cells arranged in sequence, adjacent solar cells being connected by solder strips, the solder strip being connected to a front surface of one solar cell and to a back surface of the other solar cell, a long-side dimension of the solar cell being within a range of 150 mm to 220 mm; two protective adhesive layers respectively covering front and back surfaces of the solar cell string, a dimensional difference between thicknesses of one protective adhesive layer and the solder strip being defined as first thickness, a ratio of the first thickness to the thickness of one protective adhesive layer being not less than 0 and not greater than 20%; a transparent plate covering the protective adhesive layer on the front surface; and a back plate covering the protective adhesive layer on the back surface.

Abstract: Provided are a photovoltaic module, comprising a solar cell string having a plurality of solar cells arranged in sequence, adjacent solar cells being connected by solder strips, the solder strip being connected to a front surface of one solar cell and to a back surface of the other solar cell, a long-side dimension of the solar cell being within a range of 150 mm to 220 mm; two protective adhesive layers respectively covering front and back surfaces of the solar cell string, a dimensional difference between thicknesses of one protective adhesive layer and the solder strip being defined as first thickness, a ratio of the first thickness to the thickness of one protective adhesive layer being not less than 0 and not greater than 20%; a transparent plate covering the protective adhesive layer on the front surface; and a back plate covering the protective adhesive layer on the back surface.

Abstract: Provided is a solder strip. A cross section of the solder strip includes a base portion and a reflective portion arranged above the base portion. The reflective portion includes a top edge, a first side edge and a second side edge. A first angle is formed between the first side edge and an extension line of the top edge. A second angle is formed between the second side edge and the extension line of the top edge. The first angle and the second angle are greater than 42.5° .

Abstract: Provided are a photovoltaic module, comprising a solar cell string having a plurality of solar cells arranged in sequence, adjacent solar cells being connected by solder strips, the solder strip being connected to a front surface of one solar cell and to a back surface of the other solar cell, a long-side dimension of the solar cell being within a range of 150 mm to 220 mm; two protective adhesive layers respectively covering front and back surfaces of the solar cell string, a dimensional difference between thicknesses of one protective adhesive layer and the solder strip being defined as first thickness, a ratio of the first thickness to the thickness of one protective adhesive layer being not less than 0 and not greater than 20%; a transparent plate covering the protective adhesive layer on the front surface; and a back plate covering the protective adhesive layer on the back surface.

Abstract: The present disclosure provides a functional part, a photovoltaic module and a method of manufacturing photovoltaic modules. The functional part is configured to form a photovoltaic module with a cell string that includes a plurality of cells. Adjacent cells of share an overlapped region. The functional part has a first surface facing the cell string and a second surface opposite to the first surface. The functional part includes at least one groove extending from the first surface toward the second surface. A location of each groove corresponds to a location of at least one overlapped region.

Abstract: The present disclosure relates to a method and apparatus for manufacturing a semiconductor sheet assembly. The method for manufacturing a semiconductor sheet assembly includes positioning a semiconductor sheet, and determining a first region to be grooved and a defect position in the first region; cutting and grooving the semiconductor sheet along the defect position in the first region; and splitting the semiconductor sheet that is cut and grooved.