JINKO SOLAR CO., LTD.

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.

A photovoltaic module and a method for manufacturing the photovoltaic module are provided. A respective solar cell has a front surface and a rear surface opposite to the front surface, and electrodes formed on one or both of the front and rear surfaces. The plurality of connection members include respective sets of connection members, each set of connection members is configured to in contact connection with electrodes of two adjacent solar cells of the plurality of solar cells. Each encapsulation layer includes at least a first encapsulation sub-layer and a second encapsulation sub-layer, where flowability of the first encapsulation sub-layer is less than flowability of the second encapsulation sub-layer so that the first encapsulation sub-layer does not flow between the plurality of connection members and the plurality of electrodes.

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.

A solar cell, a tandem solar cell and a photovoltaic module. The solar cell includes a substrate, a tunneling layer, a doped conductive layer, a first passivation layer, a first anti-reflection layer and first finger electrodes. First surface of the substrate includes first and second regions. The first region includes first sub-regions. The tunneling layer is formed over the first region. The doped conductive layer is formed over the tunneling layer. The first passivation layer is formed over the doped conductive layer and the second region. The first anti-reflection layer is formed over the first passivation layer. The first finger electrode is disposed at the first sub-region. At least one of the first finger electrodes is electrically connected to the doped conductive layer. A distance L 1 between the first finger electrode and an edge of the first sub-region in the first direction is 50 μm≤L 1 ≤800 μm.

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.

Embodiments of the present disclosure provide a solar cell and a solar cell module. The solar cell includes a first region and a second region, and further includes a substrate having a first surface and a second surface; a tunneling layer covering the second surface; a first emitter formed on part of the tunneling layer in the first region; and a second emitter formed on part of the tunneling layer in the second region and on the first emitter, a conductivity type of the second emitter being different from a conductivity type of the first emitter. The solar cell further includes a first electrode configured to electrically connect with the first emitter by penetrating through the second emitter; and a second electrode formed in the second region and configured to electrically connect with the second emitter.