The present invention relates to a solar module zone (110) of a solar module (100), the solar module zone (110) comprising an array of solar cells (101,201) arranged in pairs of substrings (104) along columns of the array, wherein each substring (104) comprises a plurality of solar cells (101,201) electrically connected in series along the column the substring (104) extends in; each pair of substrings (104) comprises two substrings (104) that extend along the columns, particularly adjacent columns, and that are electrically connected in series, and wherein all pairs of substrings (104) are electrically connected in parallel; each pair of substrings (104) comprises a positive and a negative end terminal (105) for connecting the pair of substrings (104) to a plus and a minus pole of the solar module (100), wherein the negative and the positive end terminals (105) of each pair of substrings (104) are located adjacent to each other in an end terminal-connecting portion of the solar module zone (110), particularly solar module (100), such that the end terminals (105) of the pairs of substrings (104) form a sequence of end terminals (105) along the columns having a sequence of polarities; wherein the sequence of polarities of the end terminals (105) comprises at least two changes of polarity of adjacent end terminals (105), characterized in that the sequence of polarity of the end terminals (105) comprises the following sequence of polarity: positive, negative, negative, positive, positive, negative or vice versa. The invention also relates to a solar module (100) comprising such a solar module zone (110) as well as a photovoltaic system (111).

Embodiments of the present disclosure relate to the photovoltaic field, and provide a solar cell and a photovoltaic module. The solar cell includes a substrate, a tunneling dielectric layer formed on the substrate, a doped conductive layer formed on the tunneling dielectric layer, at least one conductive connection structure, a passivation layer over the doped conductive layer and the at least one conductive connection structure, and a plurality of finger electrodes. The doped conductive layer has a plurality of protrusions arranged along a first direction, and each protrusion extends along a second direction perpendicular to the first direction. The at least one conductive connection structure is formed between two adjacent protrusions and connected with sidewalls of the two adjacent protrusions. Each finger electrode of the plurality of finger electrodes extends along the second direction to penetrate the passivation layer and connect to a respective protrusion.

The photovoltaic module has an interconnector. The interconnector includes: a first interconnector including a first electrode connected to a first busbar electrode of the first photovoltaic cell, a second electrode connected to a fourth busbar electrode of the second photovoltaic cell, and a first connector connecting the first electrode and the second electrode; a second interconnector including a third electrode connected to a second busbar electrode of the first photovoltaic cell, a fourth electrode connected to a third busbar electrode of the second photovoltaic cell, and a second connector connecting the third electrode and the fourth electrode; wherein the first connector has a first expanding and contracting portion that is expandable and contractible, and the second connector has a second expanding and contracting portion that is expandable and contractible.

Provided is a photovoltaic solar cell, a solar cell module and a manufacturing process. The photovoltaic solar cell includes a silicon substrate, and a passivation layer located on at least one surface of the silicon substrate. An electrode, an electrode pad and an extension line are printed on at least one surface of the silicon substrate. The electrode includes a busbar and a finger crossed with each other, and the finger is in contact with the silicon substrate. Two ends of the extension line are respectively connected to the busbar and the electrode pad, to reinforce a connection between the busbar and the electrode pad such that the extension line is not in direct contact with the finger, the extension line is in contact with the passivation layer, the electrode pad and the busbar are not in direct contact with the silicon substrate.

The present application discloses a solar cell, a photovoltaic module, and a manufacturing method therefor. In one example, a solar cell includes a solar cell substrate, collector electrodes, bus electrode sections, and first connection portions. The collector electrodes extend along a first direction, and are distributed at intervals along a second direction. The bus electrode sections are located in edge regions at two ends in the second direction, and extend along the second direction. The bus electrode sections are electrically coupled to corresponding ones of the collector electrodes having a same conductivity type as the bus electrode sections. The first connection portions are arranged on a side of corresponding ones of the bus electrode sections along the second direction and facing away from an edge of the solar cell substrate, and are electrically coupled to the corresponding bus electrode sections.

A solar cell includes a solar cell body, a plurality of fingers, and a plurality of first interconnection structures. At least a part of regions of different first interconnection structures distributed at intervals along a second direction are collinear with a same connection line of a plurality of connection lines. A quantity of connection lines located on the same target surface is N1, a quantity of first interconnection structures intersecting with a target line segment located on the target surface is N2, and N2<N1. The target line segment is a connection line segment between a midpoint of an edge that has a larger length in two edges of the target surface extending along a first direction and being arranged opposite to each other and a vertex-angle endpoint corresponding to an edge that has a smaller length in the two edges.

The present invention relates to a shingled solar cell panel for producing a string in which a plurality of strips are partially overlapped with each other, and for electrically connecting the string and the string, and a method for producing the same, the method comprises providing a wafer made of a HIT in which a plurality of conductive layers are formed on upper and lower portions thereof, respectively, forming an adhesive layer by applying a conductive adhesive on the upper conductive layer, dividing the wafer on which the adhesive layer is formed into a plurality of strips, forming a string by overlapping a lower conductive layer of another strip on an area where an adhesive layer is provided among the divided strips. Accordingly, the upper conductive layer and the lower conductive layer of each of the plurality of strips can be configured to be electrically bonded via only the adhesive layer to provide a shingled solar cell panel at low cost.

The disclosed invention provides a photovoltaic module with an improved electrode structure of a solar cell and having any of various shapes. The photovoltaic module includes electrode members each including a finger electrode and a busbar electrode on a front surface of a solar cell to correspond to the number of divided cells, wherein the finger electrode is disposed as a plurality of finger electrodes in a first direction parallel to a short side of a divided unit cell, and the busbar electrode includes a collection electrode line which extends in a second direction parallel to a long side of the divided unit cell and connects ends of the plurality of finger electrodes and a connecting electrode line which is branched off from an end of the collection electrode line and extends in the first direction to be electrically connected to another unit cell.

A photovoltaic cell module includes a photovoltaic cell layer, conductive or non-conductive connection points between photovoltaic cells and interconnected busbars, a grid line bonding layer and a grid line supporting layer provided on surfaces of the photovoltaic cells. The grid line supporting layer adheres to the surfaces of the photovoltaic cells by a bonding effect of the grid line bonding layer. The grid line supporting layer is laminated on the interconnected busbars. A method of manufacturing the module includes: firstly, preliminarily fixing interconnected busbars on the surfaces of photovoltaic cells via conductive or non-conductive connection points; then covering the surfaces of the photovoltaic cells with a grid line supporting layer and a grid line bonding layer, applying pressure on the grid line supporting layer and the grid line bonding layer, and completely fixing the interconnected busbars to the surfaces of the photovoltaic cells by the grid line supporting layer.

A string of solar cells is disclosed. The sides of the solar cells have a corrugated shape which forms an opening when the solar cells are arranged in a shingled manner. The solar cells are electrically connected in series by a ribbon that passes through the opening. A wire mesh used to decrease solar cell resistance is also disclosed.