A method for producing a photovoltaic module, comprising providing a plurality of solar cells (1, 5), wherein each respective solar cell of the plurality of solar cells has an overlapping area to be overlapped with a neighboring solar cell of the plurality of solar cells; for each respective solar cell of the plurality of solar cells: applying adhesive to first areas in the overlapping area, wherein the first areas allow the respective solar cell to be welded to the neighboring solar cell through a plurality of welding strips disposed at intervals between the respective solar cell and the neighboring solar cell, and each welding strip of the plurality of welding strips extends from the respective solar cell to the neighboring solar cell and traverses a respective first area; and in response to a hardness of the adhesive falling in a preset hardness range by curing, welding the respective solar cell to the neighboring solar cell through the plurality of welding strips, with the portion of the each welding strip located in the respective first area completely embedded in the adhesive, to obtain at least one cell string; wherein the plurality of welding strips are separated from the respective solar cell and from the neighboring solar cell by the adhesive in the first areas; encapsulating the at least one cell string using a front encapsulation layer, a front encapsulation material, a rear encapsulation layer and a rear encapsulation material, wherein the front encapsulation layer, the front encapsulation material, the at least one cell string, the rear encapsulation material and the rear encapsulation layer are stacked in sequence, in a direction from a front surface to a rear surface of the photovoltaic module; and laminating the front encapsulation layer, the front encapsulation material, the at least one cell string, the rear encapsulation material and the rear encapsulation layer, to obtain the photovoltaic module. providing a plurality of solar cells (1, 5), wherein each respective solar cell of the plurality of solar cells has an overlapping area to be overlapped with a neighboring solar cell of the plurality of solar cells; for each respective solar cell of the plurality of solar cells: applying adhesive to first areas in the overlapping area, wherein the first areas allow the respective solar cell to be welded to the neighboring solar cell through a plurality of welding strips disposed at intervals between the respective solar cell and the neighboring solar cell, and each welding strip of the plurality of welding strips extends from the respective solar cell to the neighboring solar cell and traverses a respective first area; and in response to a hardness of the adhesive falling in a preset hardness range by curing, welding the respective solar cell to the neighboring solar cell through the plurality of welding strips, with the portion of the each welding strip located in the respective first area completely embedded in the adhesive, to obtain at least one cell string; wherein the plurality of welding strips are separated from the respective solar cell and from the neighboring solar cell by the adhesive in the first areas; applying adhesive to first areas in the overlapping area, wherein the first areas allow the respective solar cell to be welded to the neighboring solar cell through a plurality of welding strips disposed at intervals between the respective solar cell and the neighboring solar cell, and each welding strip of the plurality of welding strips extends from the respective solar cell to the neighboring solar cell and traverses a respective first area; and in response to a hardness of the adhesive falling in a preset hardness range by curing, welding the respective solar cell to the neighboring solar cell through the plurality of welding strips, with the portion of the each welding strip located in the respective first area completely embedded in the adhesive, to obtain at least one cell string; wherein the plurality of welding strips are separated from the respective solar cell and from the neighboring solar cell by the adhesive in the first areas; encapsulating the at least one cell string using a front encapsulation layer, a front encapsulation material, a rear encapsulation layer and a rear encapsulation material, wherein the front encapsulation layer, the front encapsulation material, the at least one cell string, the rear encapsulation material and the rear encapsulation layer are stacked in sequence, in a direction from a front surface to a rear surface of the photovoltaic module; and laminating the front encapsulation layer, the front encapsulation material, the at least one cell string, the rear encapsulation material and the rear encapsulation layer, to obtain the photovoltaic module.