CN219329265U

CN219329265U - Photovoltaic module

Info

Publication number: CN219329265U
Application number: CN202223328815.1U
Authority: CN
Inventors: 郭启福; 周胡超; 徐勇志; 李�远; 秦靖昌; 李振; 严重菲; 王伟平
Original assignee: Jiaxing Longi Solar Technology Co Ltd
Current assignee: Jiaxing Longi Solar Technology Co Ltd
Priority date: 2022-12-12
Filing date: 2022-12-12
Publication date: 2023-07-11
Anticipated expiration: 2032-12-12

Abstract

The utility model provides a photovoltaic module, which comprises a back plate, a battery string and an encapsulation adhesive film, wherein the back plate is provided with a plurality of grooves; the packaging adhesive film comprises a first opening and a second opening which are used for the lead-out wires to pass through, the first opening and the second opening are arranged in parallel along a first direction, and the first direction is a direction perpendicular to the extending direction of the battery string and parallel to the surface of the battery string; the projections of the first opening and the second opening are located between the projections of the adjacent two battery strings in a direction perpendicular to the surfaces of the battery strings. The photovoltaic module has the advantages that the opening size is smaller, the risks of glue shortage, bubbles and the like are not easy to occur when the outgoing line passes through, the opening structure is simple, the shear mark stress is smaller, and the hidden cracking or breaking of the battery piece is not easy to occur when the outgoing line passes through or is paved on the backboard. Simultaneously, the position of first opening and second opening is located between two adjacent battery strings, can effectively avoid appearing the shear mark on the battery piece when cutting the opening, further prevents that the battery piece from appearing stealthy crack rupture piece.

Description

Photovoltaic module

Technical Field

The utility model relates to the technical field of structural design of photovoltaic modules, in particular to a photovoltaic module.

Background

The photovoltaic module comprises a panel, a back plate, a glue film and a battery string encapsulated in the glue film, wherein the battery string is provided with an outgoing line, the outgoing line can penetrate out of the glue film, current on the battery string is led to the junction box, so that the outgoing line can conveniently penetrate out, and the glue film needs to be subjected to opening treatment before the glue film is paved.

In the prior art, the adhesive film opening is usually in the form of a circular opening or a scattering-shaped opening, the circular opening is simple in structure, but the size of the circular opening is large, and the adhesive shortage and bubble risks are easy to occur on the periphery of the opening when the outgoing line passes through. Although the scattering-shaped openings improve the bubble problem, the structure is complex, the shear mark stress is serious, and when the backboard is paved, the release of the shear mark stress easily causes hidden cracking and even breaking of the battery piece.

Disclosure of Invention

In view of the above, the present utility model provides a photovoltaic module to at least solve the problems of the existing photovoltaic module that the adhesive film opening is prone to be lack of adhesive and air bubbles, and the battery piece is prone to be hidden and cracked.

In order to achieve the above purpose, the technical scheme of the utility model is realized as follows:

the utility model discloses a photovoltaic module, which comprises a back plate, a battery string and an encapsulation adhesive film arranged between the back plate and the battery string, wherein the back plate is provided with a plurality of grooves;

the packaging adhesive film comprises a first opening and a second opening which are used for leading out wires to pass through, wherein the first opening and the second opening are arranged in parallel along a first direction, and the first direction is a direction perpendicular to the extending direction of the battery strings and parallel to the surface of the battery strings;

the projections of the first opening and the second opening are located between the projections of two adjacent battery strings along the direction perpendicular to the surfaces of the battery strings.

Optionally, the battery string is formed by sequentially splicing a plurality of battery pieces, and each battery piece comprises a straight part

Corner edges and chamfer edges;

along the direction perpendicular to the surface of the battery string, the projection of the first opening is positioned between the projections of two adjacent right-angle sides, and the projection of the second opening is positioned between the projections of two adjacent right-angle sides.

Optionally, the first opening has a smaller size than the second opening in the first direction.

Optionally, along the extending direction of the battery string, the distance between the first opening and the second opening does not exceed the distance between the closest marginal grid lines of two adjacent battery sheets.

Optionally, the packaging adhesive film further comprises a plurality of third openings intersecting the first openings and a plurality of fourth openings intersecting the second openings;

the third openings are not communicated with each other, and the fourth openings are not communicated with each other.

Optionally, the dimensions of the third opening and the fourth opening do not exceed the spacing between the first opening and the second opening along the extending direction of the battery string.

Optionally, in the first direction, a distance between two adjacent third openings and a distance between two adjacent fourth openings do not exceed the size of the lead-out wire.

Optionally, along the extending direction of the battery string, the first opening is located at the middle of the third openings, and the second opening is located at the middle of the fourth openings.

Optionally, the plurality of fourth openings are all parallel to the extending direction of the battery string.

Optionally, the size of the third openings near the first opening is smaller than the size of the third opening ends along the first direction.

Compared with the prior art, the photovoltaic module has the following advantages:

the packaging adhesive film in the photovoltaic module comprises the first opening and the second opening, wherein the first opening and the second opening are arranged in parallel along the direction perpendicular to the extending direction of the battery string, and the arrangement direction is consistent with the width direction of the outgoing line, so that the outgoing line can conveniently pass through. The size of the opening is smaller, the risks of glue shortage, air bubbles and the like are not easy to occur when the outgoing line passes through, the structure of the opening is simple, the shear mark stress is smaller, the requirement for the outgoing line to pass through is lower, and the hidden cracking or breaking of the battery piece is not easy to be caused when the outgoing line passes through or the backboard is paved. Meanwhile, the positions of the first opening and the second opening are located between two adjacent battery strings, so that the phenomenon that the battery piece is hidden to crack and broken when the first opening and the second opening are cut can be effectively avoided.

Drawings

The accompanying drawings, which are included to provide a further understanding of the utility model and are incorporated in and constitute a part of this specification, illustrate embodiments of the utility model and together with the description serve to explain the utility model. In the drawings:

fig. 1 is a schematic structural diagram of a photovoltaic module in the present embodiment;

fig. 2 is a schematic diagram of a photovoltaic module lead-out wire in the present embodiment;

FIG. 3 is a schematic view of an opening of a packaging film according to the present embodiment;

FIG. 4 is a schematic view of another embodiment of an opening of a packaging film;

fig. 5 is a schematic diagram of a photovoltaic module cell string in the present embodiment;

FIG. 6 is an enlarged view of an opening of a packaging film according to the present embodiment;

fig. 7 is an enlarged schematic view of another embodiment of the opening of the packaging film.

Reference numerals illustrate:

11-panel, 12-packaging adhesive film, 13-battery string, 14-back plate, 15-lead-out wire, 21-first opening, 22-second opening, 23-third opening and 24-fourth opening.

Detailed Description

The following description of the embodiments of the present utility model will be made clearly and fully with reference to the accompanying drawings, in which it is evident that the embodiments described are some, but not all embodiments of the utility model. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

The terms first, second and the like in the description and in the claims, are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order. It is to be understood that the data so used may be interchanged, as appropriate, such that embodiments of the present utility model may be implemented in sequences other than those illustrated or described herein, and that the objects identified by "first," "second," etc. are generally of a type, and are not limited to the number of objects, such as the first object may be one or more. Furthermore, in the description and claims, "and/or" means at least one of the connected objects, and the character "/", generally means that the associated object is an "or" relationship.

It should be understood that reference throughout this specification to "one embodiment" means that a particular embodiment is referred to

The feature, structure, or characteristic is included in at least one embodiment of the utility model. Thus, the appearances of the phrase "in one embodiment" in various places throughout this specification are not necessarily all referring to the same embodiment. Furthermore, the particular features, structures, or characteristics may be combined in any suitable manner in one or more embodiments.

The following describes a photovoltaic module provided by the present utility model in detail by listing specific examples.

Referring to fig. 1 to 4, the photovoltaic module provided by the present utility model includes a back plate 14, a battery string 13, and a packaging adhesive film 12 disposed between the back plate 14 and the battery string 13; the packaging adhesive film 12 comprises a first opening 21 and a second opening 22 for the lead wires 15 to pass through, wherein the first opening 21 and the second opening 22 are arranged in parallel along a first direction, and the first direction is a direction perpendicular to the extending direction of the battery strings 13 and parallel to the surface of the battery strings 13; the projections of the first opening 21 and the second opening 22 are located between the projections of adjacent two of the battery strings 13 in a direction perpendicular to the surfaces of the battery strings 13.

Specifically, the photovoltaic module of this embodiment refers to an unfinished semi-finished product module, which is laminated by a lamination process and has no frame, and includes a panel 11, a back plate 14, a battery string 13 and an encapsulation adhesive film 12, wherein the encapsulation adhesive film 12 is respectively disposed between the panel 11 and the battery string 13, and between the back plate 14 and the battery string 13, and the battery string 13 is respectively bonded with the panel 11 and the back plate 14. The packaging adhesive film 12 can be an EVA (Polyethylene vinylacetate, polyethylene-polyvinyl acetate copolymer) adhesive film or a POE (Polyolefin Elastomer, ethylene polyolefin copolymer) adhesive film, and the like, has strong adhesive capability, better thermosetting property, durability and light transmittance, is adhered between the battery string 13 and the panel 11 and the back plate 14, plays a better stabilizing role on the battery string 13, and does not influence the photoelectric reaction of the battery string 13. The panel 11 and the back plate 14 are located at the outermost layer of the photovoltaic module, and are mainly used for protecting the battery string 13 and avoiding damage or corrosion of the battery piece caused by external environment, the panel 11 and the back plate 14 can be made of flexible materials or hard glass, and finally a single-glass photovoltaic module or a double-glass photovoltaic module is formed, which is not limited in this embodiment.

As shown in fig. 2, after the photovoltaic module is laminated, the internal battery string 13 and the external junction box are required to be connected through the outgoing line 15, the outgoing line 15 passes through the packaging adhesive film 12 between the battery string 13 and the back plate 14 and then passes out of the back plate 14, for example, three holes A1, A2 and A3 arranged on the back plate 14 in fig. 1 are holes for the outgoing line 15 to pass through, and the outgoing line 15 passes through the back plate 14 and then is connected with the external junction box, so that the circulation of current between the battery string 13 and the junction box is realized. To connect the battery string 13 with an external junction box, an opening is usually required to be provided on the packaging film 12 for the lead wires 15 to pass through, and the holes corresponding to the lower sides of A1, A2, and A3 in fig. 1 are the holes for the lead wires 15 to pass through. At present, the opening on the packaging adhesive film 12 is usually in the form of a circular opening or a scattering opening, the circular opening has a simple structure and is convenient to produce and process, but the overall size of the opening is large, and the risk of adhesive shortage, air bubbles and the like on the periphery of the opening is easily caused when the outgoing line 15 passes through the opening. The scattering-shaped opening is complex in structure, more in cutting marks and serious in cutting mark stress, the requirement on passing of the outgoing line 15 is high, and hidden cracks and even fragments are easily generated at the right-angle edge of the battery piece due to the fact that the cutting mark stress is released when the backboard 14 is paved.

Based on this, as shown in fig. 3 and 4, the encapsulation film 12 in the photovoltaic module of the present embodiment is provided with the first opening 21 and the second opening 22 for the lead wires 15 to pass through, and the first opening 21 and the second opening 22 are arranged in parallel along the first direction, which is the direction perpendicular to the extending direction of the cell string 13 and parallel to the surface of the cell string 13, as shown in the Y direction in fig. 3 and 4. The orientation of the lead-out wire 15 on the battery string 13 is the same as the extending direction of the battery string 13, the extending direction of the battery string 13 is the length direction of the lead-out wire 15, the extending direction perpendicular to the battery string 13 is the width direction of the lead-out wire 15, and the first opening 21 and the second opening 22 are arranged along the width direction of the lead-out wire 15. When the lead-out wire 15 needs to pass through the packaging adhesive film 12 outside the battery string 13, the lead-out wire is directly bent along the direction deviating from the battery string 13 and passes through the first opening 21 and the second opening 22 respectively. Of course, the dimensions of the first opening 21 and the second opening 22 need to be larger than the width dimension of the outgoing line 15 to ensure that the outgoing line 15 passes smoothly. It should be noted that, the number of the outgoing lines 15 is two, one is correspondingly connected with the positive electrode of the junction box, and the other is correspondingly connected with the negative electrode of the junction box, so that the number of the openings on the packaging adhesive film 12 is two, including the first opening 21 and the second opening 22, and each opening respectively passes through one outgoing line 15. Along the direction perpendicular to the surfaces of the battery strings 13, the projections of the first opening 21 and the second opening 22 are located between the projections of two adjacent battery strings 13, so that when the first opening 21 and the second opening 22 are cut, no cutting mark is caused on the battery piece, and hidden cracks, broken pieces and the like of the battery piece are avoided.

The packaging adhesive film 12 in the photovoltaic module comprises a first opening 21 and a second opening 22, wherein the first opening 21 and the second opening 22 are arranged in parallel along the direction perpendicular to the extending direction of the battery string 13, and the arrangement direction is consistent with the width direction of the outgoing line 15, so that the outgoing line 15 can conveniently pass through. The size of the opening is smaller, the risks of glue shortage, air bubbles and the like are not easy to occur when the outgoing line 15 passes through, the structure of the opening is simple, the shear mark stress is smaller, the requirement for passing through the outgoing line 15 is lower, and the situation that the outgoing line 15 passes through or the backboard 14 is paved is not easy to cause

Hidden cracking or chipping of the battery sheet. Meanwhile, the positions of the first opening 21 and the second opening 22 are located between two adjacent battery strings 13, so that the occurrence of cutting marks on the battery piece when the first opening 21 and the second opening 22 are cut can be effectively avoided, and the phenomenon of hidden cracking and breaking of the battery piece is prevented.

Alternatively, referring to fig. 3 and 4, the battery string 13 is formed by sequentially splicing a plurality of battery plates, and each battery plate includes a right-angle side and a chamfer side; in a direction perpendicular to the surface of the battery string 13, the projection of the first opening 21 is located between the projections of the adjacent two right-angle sides, and the projection of the second opening 22 is located between the projections of the adjacent two right-angle sides.

Specifically, the battery string 13 is formed by sequentially splicing a plurality of battery pieces, bus bars are arranged on the battery string 13 and connected with main grid lines of the battery pieces, current flow between the battery pieces is realized through the bus bars, the end parts of the bus bars are connected with the outgoing lines 15, and connection between the battery string 13 and the junction box is realized. The battery piece of this embodiment indicates half-piece battery, including right angle limit and chamfer limit, in the present battery piece processing, adopts laser cutting method to cut into two same half-piece battery pieces with the whole battery piece of standard specification along the direction of perpendicular to battery main grid line, welds two half-piece battery pieces in series again, therefore the half-piece battery piece that forms includes right angle limit and chamfer limit, and right angle limit is the limit that the cutting formed, and the chamfer limit is the limit that does not cut to the right angle limit extremely produces crackle or wearing and tearing easily. Along the direction of perpendicular to battery cluster 13 surface, the projection of first opening 21 is located between the projection of two adjacent right angle limits, and the projection of second opening 22 is located between the projection of two adjacent right angle limits, and right angle limit and chamfer limit are arranged in turn, can alleviate the problem that the battery piece right angle limit easily receives the damage and leads to the battery piece to appear hidden crack, broken piece to a certain extent.

Alternatively, referring to fig. 3 and 4, the first opening 21 has a smaller size than the second opening 22 in the first direction.

Specifically, as shown in fig. 3 and 4, since the first opening 21 is located between the right-angle sides and the second opening 22 is located between the right-angle sides, the space between the right-angle sides is smaller than the space between the right-angle sides, so that the size of the first opening 21 is smaller than the size of the second opening 22 along the first direction, so that the space between the opening and the battery piece is more adapted, and the overall accuracy of the photovoltaic module is improved. In the process of actually laying the battery string 13 and the packaging film 12, considering the influence of the laying deviation, in a preferred embodiment, the size of the first opening 21 may be set to not exceed the size of the second opening 22 minus the size of the laying deviation along the first direction, and for example, if the laying deviation is 2mm, if the size of the first opening 21 is 4mm, the second opening

The size of the port 22 is at least 6mm; if the second opening 22 is provided with a size of 7mm, the first opening 21 is not more than 5mm in size. In practical applications, the size of the first opening 21 may be set in the range of 5mm to 8mm along the first direction, and the size of the first opening 21 may be set in the range of 6mm to 10mm, so that the opening of the packaging film 12 is suitable for the battery strings 13 with various specifications. Of course, the present embodiment is not limited as to how it is specifically set.

Alternatively, referring to fig. 3 to 5, in the extending direction of the battery string 13, the distance between the first opening 21 and the second opening 22 does not exceed the distance between the closest edge gate lines of two adjacent battery sheets.

Specifically, since the size of the portion of the lead-out wire 15, where the end portion of the lead-out wire is separated from the battery string 13, is shorter, in general, the lead-out wire 15 starts to separate from the battery string 13 at the portion between the edge-most grid line of the battery pieces and the edge of the battery string 13, and bends through the packaging adhesive film 12 along the direction away from the battery string 13, so that the distance (L1 in fig. 3 and 4) between the first opening 21 and the second opening 22 is set to be not more than the distance (L2 in fig. 5) between the edge-most grid lines of two adjacent battery pieces, so as to adapt to the separation portion of the lead-out wire 15, and avoid the offset phenomenon caused by the premature separation of the lead-out wire 15, thereby improving the connection reliability of the photovoltaic module to a certain extent. In practical applications, the distance between the first opening 21 and the second opening 22 may be set within the range of 8 mm-10 mm, so that the opening of the packaging film 12 is suitable for the battery strings 13 with various specifications. Of course, the present embodiment is not limited as to how it is specifically set.

Optionally, referring to fig. 6, the packaging film 12 further includes a plurality of third openings 23 intersecting the first openings 21, and a plurality of fourth openings 24 intersecting the second openings 22; the third openings 23 are not communicated with each other, and the fourth openings 24 are not communicated with each other.

Specifically, as shown in fig. 6, the packaging film 12 further includes a plurality of third openings 23 intersecting the first openings 21, and a plurality of fourth openings 24 intersecting the second openings 22. For convenience of explanation, fig. 6 only shows a schematic view of the openings of the packaging film 12 when the layout positions of the first opening 21 and the third opening 23 are consistent with the layout positions of the second opening 22 and the fourth opening 24, and if the layout positions of the first opening 21 and the third opening 23 are not consistent with the layout positions of the second opening 22 and the fourth opening 24, reference may be made to other diagrams, such as fig. 7, which is another layout position diagram of the first opening 21 and the third opening 23. The third opening 23 and the fourth opening 24 are present as the first opening 21 and the second opening 22

An adjustable space is provided allowing a moderate stretching deformation of the first opening 21 and the second opening 22, thus allowing a certain machining error of the lead-out wire 15 without causing a phenomenon that the lead-out wire 15 does not pass through. The third openings 23 are not communicated with each other, and the fourth openings 24 are not communicated with each other, so that a shutter structure is formed, and the stability of the adhesive film opening is ensured while the adjustment is convenient.

Alternatively, referring to fig. 6, the third opening 23 and the fourth opening 24 are not larger in size than the space between the first opening 21 and the second opening 22 in the extending direction of the battery string 13.

Specifically, the dimensions of the third opening 23 and the fourth opening 24 (M1 in fig. 6) do not exceed the distance between the first opening 21 and the second opening 22 (L1 in fig. 3 and 4) in the extending direction of the battery string 13, ensuring the compactness of the opening positions, and avoiding the occurrence of misalignment or offset when the lead wires 15 pass through due to the excessive opening dimensions. In practical applications, the third opening 23 and the fourth opening 24 may be provided with a size ranging from 3mm to 5mm along the extending direction of the battery string 13, so that the opening of the packaging film 12 is suitable for various battery strings 13 with different specifications. Of course, the present embodiment is not limited as to how it is specifically set.

Alternatively, referring to fig. 6, in the first direction, the pitch between adjacent two of the third openings 23 and the pitch between adjacent two of the fourth openings 24 do not exceed the size of the lead-out wire 15.

Specifically, in the first direction, the pitch between the adjacent two third openings 23 and the pitch between the adjacent two fourth openings 24 (N1 in fig. 6) do not exceed the size of the lead-out wire 15, and under this condition, the smaller the pitch between the adjacent two third openings 23 and the pitch between the adjacent two fourth openings 24, the better the performance of the adhesive film opening in all aspects. Note that N1 in this embodiment refers to the minimum distance between the third opening 23 and the fourth opening 24. In a preferred embodiment, in the first direction, the distance between two adjacent third openings 23 does not exceed one third of the first openings 21, and the distance between two adjacent fourth openings 24 does not exceed one third of the second openings 22. In practical application, the spacing between the two adjacent third openings 23 and the spacing between the two adjacent fourth openings 24 may be set within the range of 1 mm-3 mm, so that the openings of the packaging film 12 are suitable for the battery strings 13 with various specifications. Of course, the present embodiment is not limited as to how it is specifically set.

Alternatively, referring to fig. 6, the first opening 21 is located at the middle of the plurality of third openings 23 and the second opening 22 is located at the middle of the plurality of fourth openings 24 in the extending direction of the battery string 13.

Specifically, along the extending direction of the battery string 13, the first opening 21 is located at the middle of the plurality of third openings 23, the second opening 22 is located at the middle of the plurality of fourth openings 24, and the lead-out wires 15 pass through (black area in fig. 6) from the first opening 21 and the second opening 22, and then pass out of the back plate 14 to be connected with an external junction box. The first opening 21 and the second opening 22 are respectively located at the middle position, so that the third opening 23 can uniformly adjust the two sides of the first opening 21, the fourth opening 24 can uniformly adjust the two sides of the second opening 22, the stress uniformity of each opening is guaranteed, and therefore the stability and the reliability of the opening are improved, and the opening is not easy to loosen.

Alternatively, referring to fig. 3 and 4, a plurality of the fourth openings 24 are each parallel to the extending direction of the battery string 13.

Specifically, as shown in fig. 3 and 4, the second openings 22 and the fourth openings 24 are located between the chamfered edges of the battery piece, the distance between the chamfered edges is larger than the distance between the right-angle edges, and the fourth openings 24 are formed by directly cutting in a direction parallel to the extending direction of the battery string 13 when the distance allows, and since the second openings 22 are arranged in the first direction, i.e., in a direction perpendicular to the extending direction of the battery string 13, the second openings 22 and the fourth openings 24 are in a mutually perpendicular state, and the second openings 22 and the fourth openings 24 in the state are convenient for cutting, so that the scratch of the battery piece is not easily caused.

Alternatively, referring to fig. 4 and 7, in the first direction, the size of the portions of the plurality of third openings 23 near the first opening 21 is smaller than the size of the ends of the plurality of third openings 23.

Specifically, fig. 7 is another layout position diagram of the first opening 21 and the third opening 23, where the third opening 23 and the first opening 21 are located between right-angle sides of the battery piece, and the space between the right-angle sides is small, so that the plurality of third openings 23 are arranged in a contracted state, and in this state, the size of the parts, close to the first opening 21, of the plurality of third openings 23 is smaller than the size of the ends of the parts, that is, the size of the middle parts of the plurality of third openings 23 is smaller than the size of the ends of the parts, so as to avoid scratching the right-angle sides of the battery piece in the process of cutting the openings, and further prevent the occurrence of hidden cracking and breaking phenomena of the battery piece.

Finally, it is further noted that relational terms such as first and second, and the like are used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Moreover, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or terminal that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or terminal. Without further limitation, an element defined by the phrase "comprising one … …" does not exclude the presence of other like elements in a process, method, article or terminal device comprising the element.

The foregoing description of the preferred embodiments of the utility model is not intended to be limiting, but rather is intended to cover all modifications, equivalents, alternatives, and improvements that fall within the spirit and scope of the utility model.

Claims

1. The photovoltaic module is characterized by comprising a back plate, a battery string and an encapsulation adhesive film arranged between the back plate and the battery string;

2. The photovoltaic module of claim 1, wherein the cell string is formed by sequentially splicing a plurality of cell sheets, each cell sheet comprising a right angle side and a chamfer side;

3. The photovoltaic assembly of claim 2, wherein the first opening has a smaller dimension than the second opening in the first direction.

4. The photovoltaic module according to claim 2, wherein a pitch between the first opening and the second opening in an extending direction of the cell string does not exceed a pitch of mutually adjacent edge-most grid lines of two adjacent cells.

5. The photovoltaic module of claim 2, wherein the encapsulation film further comprises a plurality of third openings intersecting the first openings and a plurality of fourth openings intersecting the second openings;

6. The photovoltaic module of claim 5, wherein the third and fourth openings are sized not to exceed a spacing between the first and second openings along the direction of extension of the cell string.

7. The photovoltaic assembly of claim 5, wherein a spacing between two adjacent third openings and a spacing between two adjacent fourth openings in the first direction do not exceed a size of the pinout.

8. The photovoltaic module according to claim 5, wherein the first opening is located at a middle portion of the plurality of third openings and the second opening is located at a middle portion of the plurality of fourth openings along an extending direction of the cell string.

9. The photovoltaic module of claim 8, wherein the fourth openings are each parallel to the direction of extension of the cell string.

10. The photovoltaic module of claim 9, wherein a size of a portion of the plurality of third openings adjacent to the first opening in the first direction is smaller than a size of an end of the plurality of third openings.