A solar module and a method of manufacturing the same. The solar module has a plurality of solar cell arrays, a cross-connector and an encapsulation. Each of the solar cell arrays includes solar cell substrates with contact structures and an interconnection structure that includes a plurality of round or rounded wires. Some of the wires have a flatter cross-section in a flattened region than the same wires in a non-flattened region adjacent to the flattened region and/or than other wires. The flattened region is located at and/or near an edge of a terminal solar cell substrate adjacent to a portion of the contacting surface of a rear side of the solar cell substrate. At least two strings of solar cell arrays are arranged side by side and interconnected by means of the cross-connector.

A high efficiency configuration for a solar cell module comprises solar cells conductively bonded to each other in a shingled manner to form super cells, which may be arranged to efficiently use the area of the solar module, reduce series resistance, and increase module efficiency.

Provided is a photovoltaic module, including a first intermediate busbar having a first lead-out terminal provided at an end thereof; a second intermediate busbar having a second lead-out terminal provided at an end thereof; and a first jumper wire arranged on a first isolation bar; the first lead-out terminal and the second lead-out terminal are located on two opposite sides of the first jumper wire, and the first lead-out terminal and the second lead-out terminal abut against two opposite side surfaces of the first isolation bar or overlap a top surface of the first isolation bar. Compared with the related art, the first isolation bar where the first jumper wire is located is clamped or pressed by the first lead-out terminal and the second lead-out terminal, to prevent short circuit or shielding of the cell caused by free movement of the first jumper wire, the first and second intermediate busbars.

In a solar cell, the back surface of a substrate thereof is provided with alternately distributed emitter zones and back surface field zones. An emitter is formed in each emitter zone, and the emitters are made of boron-doped monocrystalline silicon. A back surface field is formed in each back surface field zone; the back surface fields comprise tunneling oxide layers and polycrystalline silicon layers in stacked distribution, the polycrystalline silicon layers being made of phosphorus-doped polycrystalline silicon, and the tunneling oxide layers being located between a polycrystalline silicon layer and a polycrystalline silicon layer. Positive electrodes are electrically connected to the emitters, and negative electrodes are electrically connected to the back surface fields. In the described solar cell, the light-receiving area of the front surface can be expanded and the recombination rate of electron-hole pairs can be reduced, thereby effectively improving the photoelectric conversion efficiency of the solar cell.

A back-contact solar cell, a cell assembly, and a photovoltaic system are provided. First busbars of a back-contact solar cell are in contact with first finger pre-plated layers, and second busbars are in contact with second finger pre-plated layers. A first conductive connector and a second conductive connector are respectively arranged on two ends of each first busbar and two ends of each second busbar. The first conductive connector is connected to the ends of all the first busbars facing away from the second conductive connector, and the second conductive connector is connected to the ends of all the second busbars facing away from the first conductive connector.