JINKO SOLAR (HAINING) CO., LTD.

Provided are a solar cell, a tandem solar cell, and a photovoltaic module. The solar cell includes a substrate, a doped conductive layer, and a dielectric layer. The substrate has a first surface, and the first surface includes first regions and second regions that are alternatingly arranged along a first direction, the first regions including two adjacent first regions, and the second regions including a respective second region between the two adjacent first regions. The doped conductive layer is formed over the first surface of the substrate, and includes first conductive portions and at least one second conductive portion, where the first conductive portions include two adjacent first conductive portions formed over the two adjacent first regions respectively, the at least one second conductive portion includes a respective second conductive portion between the two adjacent first conductive portions and formed over a part of the respective second region.

Provided are a back-contact solar cell module and a manufacturing method thereof. The back-contact solar cell module includes a solar cell, a busbar, a plurality of first-polarity solder strips, a plurality of second-polarity solder strips, and an insulating film. The busbar, the plurality of first-polarity solder strips, the plurality of second-polarity solder strips, and the insulating film are all arranged on a back surface of the solar cell. The first-polarity solder strips and the second-polarity solder strips are alternately arranged on the back surface of the solar cell, the first-polarity solder strips are electrically connected to the busbar, and the insulating film can isolate the busbar from the solar cell. Along a thickness direction of the solar cell, the first-polarity solder strips and the second-polarity solder strips are respectively arranged on two sides of the insulating film.

Embodiments of the present disclosure provide a back contact photovoltaic module, including: solar cells and insulation portions. Each solar cell includes bus bars and finger electrodes. The finger electrodes includes first and second finger electrodes extending along a first direction and alternatingly arranged along a second direction. The bus bars include first and second bus bars extending along the second direction and alternatingly arranged along the first direction. Each bus bar includes a main body and welding portions. The insulation portions cover ends of the finger electrodes, and the insulation portions include first insulation portions respectively arranged adjacent to the welding portions in the second direction and second insulation portions arranged on opposing sides of the main body. In the first direction, a first distance between two first insulation portions is smaller than a second distance between two second insulation portions.

Provided is a back-contact photovoltaic module. The back-contact photovoltaic module includes a cell substrate, a plurality of conductive blocks, and insulating members. Busbars and fingers are arranged on a back surface of the cell substrate, the busbars include first busbars and second busbars alternatingly arranged along a second direction, and the fingers include first fingers and second fingers alternatingly arranged along a first direction. Each of the first finger and second finger includes a plurality of disconnected sections. A respective conductive block is disposed at a disconnected position of a respective first finger and connected to a second busbar, or is disposed at a disconnected position of a respective second finger and connected to a respective first busbar. The insulating members extend along the second direction. At least two insulating members are respectively disposed on two opposing sides of the conductive block.

The present application relates to a solar cell and a manufacturing method thereof. The solar cell includes a substrate, a first electrode, and a second electrode. A front side of the substrate includes a first region and a second region. The first region has a first pyramid structure. The second region has a second pyramid structure. An apex of the first pyramid structure is higher than an apex of the second pyramid structure. The first region has a first diffusion-doped region. A back side of the substrate includes a third region and a fourth region. A tunnel layer and a doped semiconductor layer are sequentially stacked on a side of the third region away from the substrate. The fourth region has a third pyramid structure.

A back contact cell includes: a cell base having a first edge; first finger electrodes and second finger electrodes, first connection electrodes and second connection electrodes, and a connection structure. The first connection electrodes include an edge connection electrode adjacent to the first edge, and no soldering portion is provided on the edge connection electrode. A second connection electrode immediately adjacent to the first edge includes separate collection portions, where at least one collection portion is connected to one or more respective second finger electrodes of the second finger electrodes. The connection structure is connected at one end to the edge connection electrode, extends through a space between two adjacent collection portions of the second connection electrode immediately adjacent to the edge connection electrode, and is connected at another end to one of the first connection electrodes adjacent to the edge connection electrode.

The present disclosure relates to the technical field of solar cells, and in particular to a method for manufacturing a photovoltaic module. In present embodiments, a plurality of solder strips, a plurality of adhesive dots, and a covering film are arranged on a target side of a solar cell in a preset sequence during forming a solar cell string, each solder strip corresponds to at least one adhesive dot, and the covering film at least covers the sides of the plurality of solder strips away from the solar cell, so that the plurality of solder strips can be fixed relative to the solar cell through the adhesive dots and the covering film.

A photovoltaic module is provided and includes cell strings, insulating layers, and bus bars. Each respective cell string of the cell strings includes a plurality of cells sequentially arranged in a first direction, and each respective cell of the plurality of cells is provided with solder ribbons on a back surface of the respective cell and arranged in a second direction intersecting the first direction. A respective insulating layer of the insulating layers is disposed on a side of the solder ribbons away from the respective cell, and the respective insulating layer defines windows, a respective window of the windows to allow an exposed portion of a respective solder ribbon to be exposed through the respective window. A respective bus bar of the bus bars is disposed on a side of the respective insulating layer away from the solder ribbons.

A photovoltaic module and a glue printing mesh. The photovoltaic module includes a solar cell string. The solar cell string includes solar cells, solder strips, and glue dots. Adjacent solar cells are electrically connected to each other through the solder strips. The solar cells and the solder strips are soldered and fixed at solder points, and the solar cells and the solder strips are bonded and fixed at the glue dots. The solder points includes a first solder point and a second solder point. At least one glue dot is located between the first solder point and the second solder point. A plurality of glue dots are arranged along a first direction. At least two glue dots on adjacent solder strips are not aligned with each other in the second direction. Operational stability of the solar cell and the photovoltaic module is improved.

The present disclosure relates to a back contact solar cell and a photovoltaic module. The back contact solar cell includes a silicon substrate, a first passivation layer, a protective layer, a first electrode, and a second electrode. The silicon substrate has a first surface and a second surface opposite to each other. A P-type conductive section and an N-type conductive section spaced apart from each other are provided at a side of the second surface of the silicon substrate. The first passivation layer is disposed on the first surface of the silicon substrate. The protective layer is disposed on a side of the first passivation layer facing away from the silicon substrate. The first electrode is electrically connected to the P-type conductive section. The second electrode is electrically connected to the N-type conductive section.