Photovoltaic module and photovoltaic system

Abstract

The utility model discloses a photovoltaic assembly and a photovoltaic system, and belongs to the field of photovoltaic technology. The photovoltaic module comprises a battery piece. The welding strip is arranged on the surface of the battery piece and extends along a first direction; the insulating layer is arranged on the surface of the battery piece and extends in the first direction, the insulating layer comprises a first insulating part and a second insulating part, the first insulating part and the second insulating part are arranged in the second direction, the first insulating part is located on one side of the welding strip in the second direction, and the second insulating part is located on the other side of the welding strip in the second direction. The second insulation part is located on the other side of the welding strip, and at least part of the first insulation part and / or the second insulation part is located between the welding strip and the battery piece; wherein the second direction is orthogonal to the first direction.

Description

Technical Field

[0001] The utility model belongs to the technical field of photovoltaics, and in particular relates to a photovoltaic component and a photovoltaic system. Background Art

[0002] As the core component of the laminate, the battery string can convert solar energy into electrical energy. The battery string includes a plurality of cells arranged at intervals. The surface of the cell is provided with a plurality of fine grids extending in a first direction and arranged at intervals in a second direction, and the current generated by the cell is collected through the fine grids. The surface of the cell is also provided with a main grid, which is connected to the plurality of fine grids to collect the current collected by the fine grids through the main grid.

[0003] Generally, the grid lines of a cell include positive grid lines and negative grid lines. It can be understood that the positive grid lines include positive main grids and positive fine grids, and the negative grid lines include negative main grids and negative fine grids. The positive grid lines and negative grid lines of a back-contact solar cell are both arranged on the back of the cell to avoid the positive grid lines and negative grid lines blocking the front of the cell, thereby improving the photoelectric conversion efficiency of the photovoltaic module.

[0004] In order to avoid short circuits in back-contact solar cells, an insulating strip needs to be set on the back of the cell to block the positive and negative grid lines of the cell and prevent the positive and negative grid lines from being turned on and causing short circuits in the cell. However, the existing insulating strips are offset during the setting process, resulting in low processing efficiency of photovoltaic modules. Utility Model Content

[0005] The utility model discloses a laminate and a photovoltaic module, which are used to solve or at least partially solve the problem in the prior art that the insulating strip is offset during the setting process, resulting in low processing efficiency of the photovoltaic module.

[0006] In order to solve the above technical problems, the utility model is achieved as follows:

[0007] In a first aspect, the utility model discloses a photovoltaic module, which includes a battery cell; a welding strip, wherein the welding strip is arranged on the surface of the battery cell and extends along a first direction; an insulating layer, wherein the insulating layer is arranged on the surface of the battery cell and extends along the first direction, the insulating layer includes a first insulating portion and a second insulating portion, the first insulating portion and the second insulating portion are arranged along a second direction, along the second direction, the first insulating portion is located on one side of the welding strip, the second insulating portion is located on the other side of the welding strip, and the first insulating portion and / or the second insulating portion are at least partially located between the welding strip and the battery cell; wherein the second direction is orthogonal to the first direction.

[0008] Optionally, along the first direction, the surface of the battery cell has a solder pad area and a non-pad area arranged in sequence, wherein the solder strip is located above the solder pad area and the non-pad area; and the first insulating portion and / or the second insulating portion are at least partially located between the solder strip and the non-pad area.

[0009] Optionally, the surface of the battery cell has multiple fine grids extending along the second direction; wherein, in the non-pad area, a portion of the multiple fine grids has a first sub-fine grid and a second sub-fine grid distributed on both sides of the solder strip, the first insulating portion covers the end of the first sub-fine grid close to the second sub-fine grid, and the second insulating portion covers the end of the second sub-fine grid close to the first sub-fine grid.

[0010] Optionally, the surface of the battery cell has multiple pad areas, and the multiple pad areas include a first pad area, wherein the first pad area is the pad area closest to the edge of the battery cell along the first direction and the second direction; the insulating layer also includes a third insulating part, the third insulating part is integrally formed and has a C-shaped structure, and the third insulating part is wrapped around the first pad area.

[0011] Optionally, the insulating layer also includes a fourth insulating portion, which is a long strip structure and extends along the second direction, wherein along the first direction, the fourth insulating portion is spaced apart from the third insulating portion and is located closest to the edge of the battery cell; the number of fine grids covered by the fourth insulating portion is greater than the number of fine grids covered by other insulating layers located between the fourth insulating portion and the third insulating portion.

[0012] Optionally, the battery cell is a back-contact battery cell.

[0013] Optionally, a main grid is provided on the surface of the battery cell, and the main grid extends along the first direction; or, the battery cell is a battery cell without a main grid.

[0014] Optionally, the insulating layer is a transparent structure.

[0015] In a second aspect, the utility model further discloses a photovoltaic system, which includes the photovoltaic assembly described in the first aspect.

[0016] The utility model discloses a photovoltaic component and a photovoltaic system, wherein the photovoltaic component comprises a battery cell; a welding strip, wherein the welding strip is arranged on the surface of the battery cell and extends along a first direction; an insulating layer, wherein the insulating layer is arranged on the surface of the battery cell, wherein the insulating layer comprises a first insulating portion and a second insulating portion, wherein the first insulating portion and the second insulating portion are arranged along a second direction, wherein along the second direction, the first insulating portion is located on one side of the welding strip, the second insulating portion is located on the other side of the welding strip, and the first insulating portion and / or the second insulating portion are at least partially located between the welding strip and the battery cell; wherein the second direction is orthogonal to the first direction.

[0017] In the utility model, a welding strip is arranged on the surface of the battery cell, and the welding strip extends along a first direction, so as to collect the current generated by the battery cell through the welding strip.

[0018] Furthermore, an insulating layer is provided on the surface of the battery cell, and the insulating layer includes a first insulating portion and a second insulating portion arranged at intervals along the second direction. Wherein, along the second direction, the first insulating portion of the insulating layer is located on one side of the welding strip, and the second insulating portion of the insulating layer is located on the other side of the welding strip. And the first insulating portion and / or the second insulating portion is at least partially located between the welding strip and the battery cell. Through the above arrangement, during the lamination process of the photovoltaic module, the arrangement of the first insulating portion and the second insulating portion is facilitated, which helps to improve the processing efficiency of the photovoltaic module, thereby reducing the processing cost of the photovoltaic module. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 A partial cross-sectional view showing a photovoltaic module according to an embodiment of the present utility model;

[0020] Figure 2 A schematic diagram showing the structure of the insulating layer in the embodiment of the utility model;

[0021] Figure 3 A schematic diagram showing the structure of the first pad area in an embodiment of the utility model;

[0022] Reference numerals:

[0023] 10: battery cell; 11: pad area; 111: first pad area; 12: non-pad area; 13: fine grid; 131: first sub-fine grid; 132: second sub-fine grid;

[0024] 20: welding strip;

[0025] 30: insulating layer; 31: first insulating portion; 32: second insulating portion; 33: third insulating portion; 34: fourth insulating portion;

[0026] A: first direction; B: second direction. DETAILED DESCRIPTION

[0027] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the fixed scope of the utility model.

[0028] It should be understood that the references to "one embodiment" or "an embodiment" throughout the specification mean that the specific features, structures, or characteristics associated with the embodiment are included in at least one embodiment of the present invention. Therefore, the references to "in one embodiment" or "in an embodiment" appearing throughout the specification do not necessarily refer to the same embodiment. In addition, these specific features, structures, or characteristics may be combined in any suitable manner in one or more embodiments.

[0029] Reference Figure 1 , showing a partial cross-sectional view of the photovoltaic assembly described in the embodiment of the utility model; referring to Figure 2 , showing a schematic diagram of the structure of the insulating layer in the embodiment of the utility model; referring to Figure 3 , shows a schematic structural diagram of the first pad area in an embodiment of the utility model.

[0030] like Figures 1 to 3 As shown, an embodiment of the utility model discloses a photovoltaic module, which includes a battery cell 10; a welding strip 20, which is arranged on the surface of the battery cell 10 and extends along a first direction A; an insulating layer 30, which is arranged on the surface of the battery cell 10 and extends along the first direction A, and the insulating layer 30 includes a first insulating portion 31 and a second insulating portion 32, and the first insulating portion 31 and the second insulating portion 32 are arranged along a second direction B. Along the second direction B, the first insulating portion 31 is located on one side of the welding strip 20, and the second insulating portion 32 is located on the other side of the welding strip 20, and the first insulating portion 31 and / or the second insulating portion 32 are at least partially located between the welding strip 20 and the battery cell 10; wherein the second direction B is orthogonal to the first direction A.

[0031] like Figures 1 to 3 As shown, the embodiment of the utility model discloses a photovoltaic module, which includes a cell 10, a welding strip 20 and an insulating layer 30. Among them, the cell 10 is the core component of the photovoltaic module, which can convert solar energy into electrical energy. The cell 10 has a light-receiving surface facing the sunlight, also called the front side. The cell 10 also has a backlight surface facing away from the sunlight, also called the back side.

[0032] The welding strip 20 and the insulating layer 30 in the embodiment of the utility model can be arranged on the front side of the battery cell 10, or on the back side of the battery cell 10. In the embodiment of the utility model, there is no limitation on whether the welding strip 20 and the insulating layer 30 are arranged on the front side of the battery cell 10 or on the back side of the battery cell 10. In actual applications, technicians can arrange them as needed.

[0033] The following description will be made by taking the case where the welding strip 20 and the insulating layer 30 are disposed on the back of the cell 10 as an example. In other words, the following description will be made by taking the back-contact solar photovoltaic module as an example.

[0034] like Figures 1 to 3 As shown, in the embodiment of the utility model, the welding ribbon 20 is arranged on the back side of the battery cell 10 , the welding ribbon 20 extends along the first direction A and is connected to the back side of the battery cell 10 , so as to collect and transmit the current generated by the battery cell 10 through the welding ribbon 20 .

[0035] Exemplarily, a plurality of welding areas 11 may be provided on the back side of the battery cell 10, and the plurality of welding areas 11 may be arranged at intervals along a first direction A. A welding ribbon 20 may be laid over the plurality of welding areas 11 and welded to the plurality of welding areas 11, thereby connecting the welding ribbon 20 to the back side of the battery cell 10, and collecting and transmitting the current generated by the battery cell 10 through the welding ribbon 20.

[0036] like Figures 1 to 3 As shown, the insulating layer 30 in the embodiment of the utility model is also arranged on the back of the battery cell 10, and the insulating layer 30 also extends along the first direction A. Along the second direction B, the insulating layer 30 includes a first insulating portion 31 and a second insulating portion 32 arranged at intervals, the first insulating portion 31 is located on one side of the welding strip 20, and the second insulating portion 32 is located on the other side of the welding strip 20. The positive and negative electrodes of the battery cell 10 are blocked by the first insulating portion 31 and the second insulating portion 32 to prevent the positive and negative electrodes of the battery cell 10 from being connected and causing a short circuit in the battery cell 10.

[0037] like Figure 1 As shown, in the embodiment of the utility model, the first insulating portion 31 and / or the second insulating portion 32 are at least partially located between the welding ribbon 20 and the battery cell 10. That is to say, in the embodiment of the utility model, the first insulating portion 31 can be partially arranged between the welding ribbon 20 and the battery cell 10. The second insulating portion 32 can be partially arranged between the welding ribbon 20 and the battery cell 10. It is also possible to arrange a portion of the first insulating portion 31 and a portion of the second insulating portion 32 between the welding ribbon 20 and the battery cell 10. In this regard, in the embodiment of the utility model, there are no excessive restrictions. In actual applications, technicians can set it as needed.

[0038] In the embodiment of the utility model, the first insulating portion 31 and the second insulating portion 32 are at least partially disposed between the welding ribbon 20 and the solar cell 10. During the processing of the photovoltaic module, the first insulating portion 31 and the second insulating portion 32 are conveniently disposed, which helps to improve the processing efficiency of the photovoltaic module, thereby reducing the processing cost of the photovoltaic module.

[0039] It should be noted that the battery cell 10 in the embodiment of the utility model is generally a rectangular structure. The first direction A can be the width direction of the battery cell 10, and the second direction B can be the length direction of the battery cell 10. Of course, the first direction A can also be the length direction of the battery cell 10, and the second direction B can be the width direction of the battery cell 10. In this regard, the embodiment of the utility model does not make specific restrictions, and in actual applications, technicians can set it as needed.

[0040] In addition, the welding strips 20 in the embodiment of the present invention may include a plurality of welding strips, and the plurality of welding strips 20 are arranged at intervals along the second direction B. The second direction B is perpendicular to the first direction A.

[0041] Alternatively, if Figure 2 and Figure 3 As shown, in an embodiment of the utility model, along a first direction A, the surface of the battery cell 10 has a solder pad area 11 and a non-solder pad area 12 arranged in sequence, wherein the solder strip 20 is located above the solder pad area 11 and the non-solder pad area 12; the first insulating portion 31 and / or the second insulating portion 32 are at least partially located between the solder strip 20 and the non-solder pad area 12.

[0042] like Figure 2 and Figure 3 As shown, along the first direction A, the surface of the battery cell 10 has a pad area 11 and a non-pad area 12 arranged in sequence. The pad area 11 and the non-pad area 12 may include multiple pad areas 11 and multiple non-pad areas 12, and the multiple pad areas 11 and the multiple non-pad areas 12 are alternately arranged along the first direction A, and one pad area 11 is connected to two adjacent non-pad areas 12.

[0043] In the embodiment of the utility model, the soldering ribbon 20 is disposed above the pad area 11 and the non-pad area 12, and connected to the pad area 11. For example, the soldering ribbon 20 can be soldered to the pad area 11, or the soldering ribbon 20 can be bonded to the pad area 11. In the embodiment of the utility model, there are no excessive restrictions on the specific way in which the soldering ribbon 20 is connected to the pad area 11, and in actual applications, technicians can set it according to needs.

[0044] Among them, the first insulating portion 31 and / or the second insulating portion 32 are at least partially located between the soldering strip 20 and the non-pad area 12. That is to say, the first insulating portion 31 can be partially set between the soldering strip 20 and the non-pad area 12, the second insulating portion 32 can be partially set between the soldering strip 20 and the non-pad area 12, or the first insulating portion 31 and the second insulating portion 32 can be partially set between the soldering strip 20 and the non-pad area 12. In this regard, in the embodiment of the utility model, there are no excessive restrictions. In actual applications, technicians can set it as needed.

[0045] In the embodiment of the utility model, at least a portion of the first insulating portion 31 and at least a portion of the second insulating portion 32 are disposed between the soldering strip 20 and the non-soldering pad area 12. During the processing of the photovoltaic module, the first insulating portion 31 and the second insulating portion 32 are conveniently disposed, which helps to improve the processing efficiency of the photovoltaic module, thereby reducing the processing cost of the photovoltaic module.

[0046] Furthermore, the first insulating portion 31 and the second insulating portion 32 are disposed between the soldering ribbon 20 and the non-pad region 12, which does not affect the reliability of the electrical connection between the soldering ribbon 20 and the cell 10. In particular, the insulating layer 30 is a transparent structure, which has no effect on the photoelectric conversion efficiency of the cell 10.

[0047] Alternatively, if Figure 1 As shown, in the embodiment of the present invention, along the second direction B, the gap between the first insulating portion 31 and the second insulating portion 32 is adapted to the width of the welding strip 20 .

[0048] like Figure 1 As shown, in the embodiment of the utility model, along the second direction B, the gap between the first insulating part 31 and the second insulating part 32 is set to be adapted to the width of the welding strip 20, so that most of the welding strip 20 is located between the first insulating part 31 and the second insulating part 32, and is connected to the back side of the battery cell 10, thereby ensuring the reliability of the connection between the battery cell 10 and the welding strip 20.

[0049] Exemplarily, along the second direction B, the gap between the first insulating portion 31 and the second insulating portion 32 can be set to 0.6 mm, and the width of the soldering strip 20 can also be set to 0.6 mm. Along the second direction B, the gap between the first insulating portion 31 and the second insulating portion 32 can also be set to be slightly larger than 0.6 mm. For example, the gap between the first insulating portion 31 and the second insulating portion 32 can be set to 0.61 mm, 0.62 mm, 0.63 mm, 0.64 mm, 0.65 mm, and the width of the soldering strip 20 can be set to 0.6 mm.

[0050] Of course, the above are only individual examples of the embodiments of the utility model and are not intended to limit the utility model. In practical applications, along the second direction B, the gap between the first insulating portion 31 and the second insulating portion 32 can be set to be equal to the width of the soldering strip 20. Along the second direction B, the gap between the first insulating portion 31 and the second insulating portion 32 can also be set to be slightly larger than or slightly smaller than the width of the soldering strip 20. In this regard, in the embodiments of the utility model, there are no excessive restrictions. In practical applications, technicians can set it as needed.

[0051] Alternatively, if Figures 1 to 3 As shown, the surface of the battery cell 10 in the embodiment of the utility model has multiple fine grids 13 extending along the second direction B, wherein, in the non-pad area 12, a part of the multiple fine grids 13 has a first sub-fine grid 131 and a second sub-fine grid 132 distributed on both sides of the welding strip 20, the first insulating portion 31 covers the end of the first sub-fine grid 131 close to the second sub-fine grid 132, and the second insulating portion 32 covers the end of the second sub-fine grid 132 close to the first sub-fine grid 131.

[0052] In the embodiment of the utility model, a plurality of fine grids 13 extending along the second direction B can be arranged on the back of the battery cell 10, and the current generated by the battery cell 10 is collected by the plurality of fine grids 13. Among them, the plurality of fine grids 13 include positive fine grids and negative fine grids. In the embodiment of the utility model, there are no excessive restrictions on the specific arrangement of the positive fine grids and the negative fine grids. In actual applications, technicians can set them according to needs.

[0053] like Figure 1 As shown, the fine grid 13 in the embodiment of the utility model includes a first sub-fine grid 131 and a second sub-fine grid 132. Along the second direction B, the first sub-fine grid 131 is located on one side of the welding strip 20, and there is a gap between the first sub-fine grid 131 and the welding strip 20 to prevent the welding strip 20 and the first sub-fine grid 131 from being connected, causing a short circuit in the battery cell 10. The second sub-fine grid 132 is located on the other side of the welding strip 20, and there is a gap between the second sub-fine grid 132 and the welding strip 20 to prevent the welding strip 20 and the second sub-fine grid 132 from being connected, causing a short circuit in the battery cell 10.

[0054] like Figure 1 As shown, the first insulating portion 31 in the embodiment of the present invention covers the end of the first sub-fine gate 131 close to the second sub-fine gate 132 , and the second insulating portion 32 covers the end of the second sub-fine gate 132 close to the first sub-fine gate 131 .

[0055] In the embodiment of the utility model, the first insulating portion 31 covers the end of the first sub-fine grid 131 close to the second sub-fine grid 132 to ensure the insulation between the first sub-fine grid 131 and the welding strip 20, thereby preventing the battery cell 10 from short-circuiting. The second insulating portion 32 covers the end of the second sub-fine grid 132 close to the first sub-fine grid 131 to ensure the insulation between the second sub-fine grid 132 and the welding strip 20, thereby preventing the battery cell from short-circuiting.

[0056] Alternatively, if Figure 2 and Figure 3 As shown, the surface of the battery cell 10 has multiple pad areas 11, and the multiple pad areas 11 include a first pad area 111, wherein the first pad area 111 is the pad area 11 closest to the edge of the battery cell 10 along the first direction A and the second direction B; the insulating layer 30 also includes a third insulating portion 33, the third insulating portion 33 is integrally formed and has a C-shaped structure, and the third insulating portion 33 is wrapped around the first pad area 111.

[0057] like Figure 2 and Figure 3 As shown, the battery cell 10 in the embodiment of the present invention is generally a rectangular structure, the first direction A is the width direction of the rectangular structure battery cell 10, and the second direction B is the length direction of the rectangular structure battery cell 10. Of course, the above rectangular structure battery cell, as well as the first direction A and the second direction B are individual examples of the embodiment of the present invention, and are not intended to limit the present invention. In actual applications, technicians can also set the specific structure of the battery cell 10 and the specific directions of the first direction A and the second direction B as needed.

[0058] like Figure 2 and Figure 3 As shown, multiple groups of pad regions 11 are arranged on the surface of the battery cell 10, and the multiple groups of pad regions 11 are arranged at intervals along the second direction B. Each group of pad regions 11 includes multiple pad regions 11, and the multiple pad regions 11 are arranged at intervals along the first direction A. Among them, in a group of pad regions 11 closest to the edge of the battery cell 10 along the second direction B, a pad region 11 closest to the edge of the battery cell 10 along the first direction A is the first pad region 111. In other words, the first pad region 111 is the pad region 11 closest to the edge of the battery cell 10 along the first direction A and the second direction B.

[0059] It can be understood that the surface of the rectangular structure battery cell 10 has four first pad areas 111 , and each first pad area 111 is located near a corner of the rectangular structure battery cell 10 .

[0060] like Figure 2 and Figure 3As shown, the insulating layer 30 in the embodiment of the utility model further includes a third insulating portion 33, which is integrally formed and has a C-shaped structure, and the third insulating portion 33 of the C-shaped structure surrounds the first pad area 111. The third insulating portion 33 blocks the positive and negative electrodes of the battery cell 10 to prevent the positive and negative electrodes of the battery cell 10 from being connected, thereby preventing the battery cell 10 from short-circuiting.

[0061] Furthermore, in the embodiment of the utility model, the third insulating portion 33 is set as an integrally formed structure to avoid the risk of the soldering ribbon 20 puncturing the battery cell 10 after being cut and the risk of short circuit caused by the deviation of the soldering ribbon 20, thereby further improving the reliability of the photovoltaic module.

[0062] Alternatively, if Figure 2 and Figure 3 As shown, the insulating strip 30 in the embodiment of the utility model also includes a fourth insulating portion 34, which is a long strip structure and extends along the second direction B, wherein along the first direction A, the fourth insulating portion 34 is spaced apart from the third insulating portion 33 and is located closest to the edge of the battery cell 10; the number of fine grids 13 covered by the fourth insulating portion 34 is equal to the number of fine grids covered by other insulating layers 30 located between the fourth insulating portion 34 and the third insulating portion 33.

[0063] like Figure 2 and Figure 3 As shown, the insulating strip 30 in the embodiment of the utility model further includes a fourth insulating portion 34, which is a long strip structure, and the length direction of the fourth insulating portion 34 extends along the second direction B. Along the first direction A, the fourth insulating portion 34 is spaced apart from the third insulating portion 33, and the fourth insulating portion 34 is located at a position closest to the edge of the battery cell 10 along the first direction A.

[0064] like Figure 2 and Figure 3 As shown, the number of fine gates 13 covered by the fourth insulating portion 34 in the embodiment of the present invention is greater than the number of fine gates 13 covered by other insulating layers 30 located between the fourth insulating portion 34 and the third insulating portion 33 .

[0065] In the embodiment of the utility model, the number of fine grids 13 covered by the fourth insulating portion 34 is set to be greater than the number of fine grids 13 covered by other insulating layers 30 located between the fourth insulating portion 34 and the third insulating portion 33. More fine grids 13 are covered by the fourth insulating portion 34, so that the end of the welding ribbon 20 is prevented from extending out of the insulating strip 30, resulting in the risk of short circuit of the battery cell 10, thereby further improving the reliability of the photovoltaic module.

[0066] Optionally, a main grid is provided on the surface of the cell 10, and the main grid extends along the first direction A so that the main grid intersects with the fine grid 13. The current generated by the cell 10 is collected by the fine grid 13, and the current collected by the fine grid 13 is collected by the main grid. The surface of the cell 10 may also not be provided with a main grid, that is, the current generated by the cell 10 is collected by the fine grid 13, and the current collected by the fine grid 13 is collected by the welding ribbon 20.

[0067] It should be noted that the insulating layer 30 in the embodiment of the utility model is a transparent structure. The provision of the insulating layer 30 has no effect on the photoelectric conversion efficiency of the battery cell 10 .

[0068] The embodiment of the utility model further discloses a photovoltaic system, which includes the photovoltaic assembly described in the above embodiment.

[0069] It should be noted that in the embodiment of the utility model, the photovoltaic system includes a photovoltaic component with the same structure as the photovoltaic component described in the above embodiment, and its beneficial effects are also similar, which will not be described in detail here.

[0070] It should be noted that the various embodiments in this specification are described in a progressive manner, and each embodiment focuses on the differences from other embodiments. The same or similar parts between the various embodiments can be referenced to each other.

[0071] Although the optional embodiments of the utility model embodiments have been described, those skilled in the art, once knowing the basic creative concept, can make other changes and modifications to these embodiments. Therefore, the appended claims are intended to be interpreted as including optional embodiments and all changes and modifications falling within the scope of the utility model embodiments.

[0072] Finally, it should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity from another entity, and do not necessarily require or imply any such actual relationship or order between these entities. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that an article or terminal device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such article or terminal device. In the absence of further restrictions, the elements defined by the sentence "including one..." do not exclude the existence of other identical elements in the article or terminal device including the elements.

[0073] The technical solution provided by the present invention is introduced in detail above. Specific examples are used in this article to illustrate the principle and implementation method of the present invention. At the same time, for those skilled in the art, according to the principle and implementation method of the present invention, there will be changes in the specific implementation method and application scope. In summary, the content of this specification should not be understood as a limitation on the present invention.

Claims

1. A photovoltaic module, characterized in that: include: Battery cells; A welding strip, which is disposed on a surface of the battery cell and extends along a first direction; an insulating layer, the insulating layer being disposed on the surface of the battery cell and extending along the first direction, the insulating layer comprising a first insulating portion and a second insulating portion, the first insulating portion and the second insulating portion being arranged along the second direction, the first insulating portion being located on one side of the welding strip, the second insulating portion being located on the other side of the welding strip, and the first insulating portion and / or the second insulating portion being at least partially located between the welding strip and the battery cell; The second direction is orthogonal to the first direction.

2. The photovoltaic module according to claim 1, characterized in that: Along the first direction, the surface of the battery cell has pad areas and non-pad areas arranged in sequence, wherein: The soldering strip is located above the soldering pad area and the non-soldering pad area; The first insulating portion and / or the second insulating portion is at least partially located between the soldering strip and the non-pad area.

3. The photovoltaic module according to claim 2, characterized in that: The surface of the cell has a plurality of fine grids extending along the second direction; wherein, In the non-pad area, a portion of the multiple fine grids has a first sub-fine grid and a second sub-fine grid distributed on both sides of the solder strip, the first insulating portion covers an end of the first sub-fine grid close to the second sub-fine grid, and the second insulating portion covers an end of the second sub-fine grid close to the first sub-fine grid.

4. The photovoltaic module according to any one of claims 1 to 3, characterized in that: The surface of the battery cell has a plurality of pad areas, and the plurality of pad areas include a first pad area, wherein: The first pad area is the pad area closest to the edge of the battery cell along the first direction and the second direction; The insulating layer further includes a third insulating portion, which is integrally formed and has a C-shaped structure. The third insulating portion surrounds the first pad region.

5. The photovoltaic module according to claim 4, characterized in that: The insulating layer further includes a fourth insulating portion, which is a strip-shaped structure and extends along the second direction, wherein: Along the first direction, the fourth insulating portion is spaced apart from the third insulating portion and is located closest to the edge of the battery cell; The number of fine gates covered by the fourth insulating portion is greater than the number of fine gates covered by other insulating layers located between the fourth insulating portion and the third insulating portion.

6. The photovoltaic module according to any one of claims 1 to 3 and 5, characterized in that: The battery cell is a back contact type battery cell.

7. The photovoltaic module according to claim 6, characterized in that: A main grid is provided on the surface of the battery cell, and the main grid extends along the first direction; Alternatively, the battery cell is a busbar-less battery cell.

8. The photovoltaic module according to claim 7, characterized in that: The insulating layer is a transparent structure.

9. A photovoltaic system, characterized in that: A photovoltaic module comprising any one of claims 1 to 8.

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