A photovoltaic module, comprising: a plurality of cell strings; and a first encapsulating adhesive film and a second encapsulating adhesive film that are stacked, wherein a gap between the first encapsulating adhesive film and the second encapsulating adhesive film accommodates the plurality of cell strings; wherein each of at least one of the first encapsulating adhesive film and the second encapsulating adhesive film has at least one protrusion structure on a side facing away from the gap, wherein a first orthographic projection of a protrusion structure on one of the first encapsulating adhesive film and the second encapsulating adhesive film is located in a second orthographic projection of a corresponding cell string on the one of the first encapsulating adhesive film and the second encapsulating adhesive film; wherein the photovoltaic module has a central region and a peripheral region surrounding the central region, wherein the photovoltaic module further comprises at least one protrusion block, wherein the at least one protrusion block is disposed on a side of one of the first encapsulating adhesive film and the second encapsulating adhesive film in the central region close to the gap, and each protrusion block is disposed in a spacing between a corresponding pair of adjacent cell strings; and the photovoltaic module further defines at least one groove, wherein the at least one groove is defined on a side of another of the first encapsulating adhesive film and the second encapsulating adhesive film in the central region close to the gap, and each protrusion block is filled in a corresponding groove; wherein in a direction perpendicular to a direction perpendicular to a surface of each of the plurality of cell strings, a width of a region of a respective protrusion block close to a corresponding groove is larger than a width of another region of the respective protrusion block away from the corresponding groove; and a width of a region of a respective groove close to a corresponding pair of adjacent cell strings is smaller than a width of another region of the respective groove away from the corresponding pair of the adjacent cell strings; wherein a wider region of the respective protrusion block fits with a bottom of the corresponding groove, and the respective protrusion block is substantially T-shaped. a plurality of cell strings; and a first encapsulating adhesive film and a second encapsulating adhesive film that are stacked, wherein a gap between the first encapsulating adhesive film and the second encapsulating adhesive film accommodates the plurality of cell strings; wherein each of at least one of the first encapsulating adhesive film and the second encapsulating adhesive film has at least one protrusion structure on a side facing away from the gap, wherein a first orthographic projection of a protrusion structure on one of the first encapsulating adhesive film and the second encapsulating adhesive film is located in a second orthographic projection of a corresponding cell string on the one of the first encapsulating adhesive film and the second encapsulating adhesive film; wherein the photovoltaic module has a central region and a peripheral region surrounding the central region, wherein the photovoltaic module further comprises at least one protrusion block, wherein the at least one protrusion block is disposed on a side of one of the first encapsulating adhesive film and the second encapsulating adhesive film in the central region close to the gap, and each protrusion block is disposed in a spacing between a corresponding pair of adjacent cell strings; and the photovoltaic module further defines at least one groove, wherein the at least one groove is defined on a side of another of the first encapsulating adhesive film and the second encapsulating adhesive film in the central region close to the gap, and each protrusion block is filled in a corresponding groove; wherein in a direction perpendicular to a direction perpendicular to a surface of each of the plurality of cell strings, a width of a region of a respective protrusion block close to a corresponding groove is larger than a width of another region of the respective protrusion block away from the corresponding groove; and a width of a region of a respective groove close to a corresponding pair of adjacent cell strings is smaller than a width of another region of the respective groove away from the corresponding pair of the adjacent cell strings; wherein a wider region of the respective protrusion block fits with a bottom of the corresponding groove, and the respective protrusion block is substantially T-shaped.