Photovoltaic module

Abstract

The photovoltaic module comprises a module body, a protective edge strip and a protective corner sleeve, the protective edge strip is arranged along the edge of the module body, and the protective corner sleeve fixedly sleeves the vertex angle of the module body; the protection edge strip comprises a side protection edge and a bottom protection edge which are integrally and vertically connected, the side protection edge is tightly attached to the side edge of the assembly body, and the bottom protection edge is tightly attached to the back side of the assembly body. At least one of the side protective edge and the bottom protective edge is provided with a glue overflowing groove so that a glue overflowing gap can be formed between the protective edge strip and the assembly body, the glue overflowing gap is filled with fastening glue used for fixedly connecting the protective edge strip and the assembly body, and the protective edge strip and the assembly body are fixedly connected together through the fastening glue; therefore, the protection edgings and the protection corner sleeves are combined to replace an existing frame, the protection purpose is achieved, and the photovoltaic module adopting the frameless design is prevented from being damaged and broken in the carrying process.

Description

Technical Field

[0001] The present invention relates to the technical field of new energy, and particularly relates to a photovoltaic module. Background Art

[0002] Existing photovoltaic modules mostly use aluminum alloy frames, and there are still many deficiencies in aluminum alloy frames. For example, since the aluminum alloy frame is located around the photovoltaic laminate, it can only directly provide support for the periphery of the photovoltaic laminate. When the length and width of the photovoltaic module are relatively large, collisions during transportation and turnover, as well as wind pressure and snow load during outdoor use, will cause the wafers to be cracked invisibly, and in severe cases, the wafers will be fragmented. For another example, when the photovoltaic module operates at a high voltage for a long time, due to the existence of the aluminum alloy frame, there is a leakage current between the front panel, the sealant layer and the frame. A large amount of charge accumulates on the surface of the wafers, deteriorating the passivation effect on the wafer surface, resulting in a decrease in fill factor, short-circuit current, and open-circuit voltage, and thus reducing the performance of the photovoltaic module. Based on this, existing photovoltaic modules increasingly adopt a frameless design. The frameless photovoltaic module has a simpler installation process, lighter weight, lower cost, does not need to worry about the frame interfering with installation or damaging the wafers, has relatively stable performance, and lower failure rate, and has good development prospects.

[0003] However, existing frameless photovoltaic modules are generally of double-glass or single-glass structure, lacking frame protection around the periphery, and are extremely prone to being knocked during production process handling, packing, and on-site secondary handling and installation, resulting in damage and breakage of the photovoltaic module. Summary of the Invention

[0004] In view of this, the purpose of the present invention is to provide a photovoltaic module, which solves the technical problem that the frameless photovoltaic module is easily damaged and broken during handling.

[0005] To achieve the above purpose, the present invention provides a photovoltaic module, including a module body, a protective edge strip, and a protective corner sleeve. The protective edge strip is arranged along the edge of the module body, and the protective corner sleeve is fixedly sleeved on the top corner of the module body; the protective edge strip includes a side protection edge and a bottom protection edge that are integrally and vertically connected. The side protection edge is arranged close to the side of the module body, and the bottom protection edge is arranged close to the back side of the module body; at least one of the side protection edge and the bottom protection edge is provided with an overflow glue groove to form an overflow glue gap between the protective edge strip and the module body, and the overflow glue gap is filled with a fastening colloid for fixedly connecting the protective edge strip and the module body.

[0006] Preferably, the side protection edge is provided with an anti-overflow glue protrusion that abuts against the side of the module body, and the anti-overflow glue protrusion is used to prevent the fastening colloid from overflowing.

[0007] Preferably, an anti-overflow glue boss is formed on the edge of the overflow glue groove, the fastening colloid abuts between the side protection edge and the anti-overflow glue boss, and the anti-overflow glue boss is used to prevent the fastening colloid from overflowing.

[0008] Preferably, the glue overflow groove is provided on the bottom edge guard; an arc-shaped groove is formed at the connection between the side edge guard and the bottom edge guard, and the fastening colloid abuts between the arc-shaped groove and the glue overflow prevention boss; the glue overflow gap is formed between the back side of the component body and the bottom edge guard, and the cross-section of the glue overflow gap is in a shape of a straight line; in the direction of the bottom edge guard approaching the glue overflow prevention boss, the width of the glue overflow gap gradually decreases.

[0009] Preferably, the fastening colloid is a double-sided film or a laminated film.

[0010] Preferably, a plurality of glue overflow prevention protrusions extending along the side direction of the component body are provided in parallel on the side edge guard, and all the glue overflow prevention protrusions are arranged in a serrated pattern.

[0011] Preferably, the glue overflow groove is provided on the side edge guard and the bottom edge guard; the fastening colloid abuts between the side surface of the side edge guard and the glue overflow prevention boss; a side gap is formed between the side edge guard and the side of the component body, and a bottom gap is formed between the bottom edge guard and the back side of the component body. The side gap and the bottom gap are vertically connected to form a glue overflow gap; the cross-section of the side gap is rectangular, and the cross-section of the bottom gap is in a shape of a straight line; on the bottom edge guard approaching the glue overflow prevention boss, the width of the bottom gap gradually decreases.

[0012] Preferably, the fastening colloid is a solidified glue block.

[0013] Preferably, a glue overflow prevention protrusion is integrally and vertically fixed at the top end of the side edge guard, and the glue overflow prevention protrusion is parallel to the side of the component body; the glue overflow prevention protrusion extends from the side edge guard towards the side of the component body.

[0014] Preferably, the component body includes a front panel, and the top surface of the side edge guard is flush with the top surface of the front panel; or, a set height difference is maintained between the top surface of the side edge guard and the top surface of the front panel.

[0015] Compared with the background art, the photovoltaic module provided by the present invention adopts a frameless design, and includes a component body, a protective edge strip and a protective corner sleeve. The protective edge strip is arranged along the edge of the component body, and the protective corner sleeve is fixedly sleeved on the top corner of the component body. The protective edge strip includes a side edge guard and a bottom edge guard that are integrally and vertically connected. The side edge guard is closely attached to the side of the component body, and the bottom edge guard is closely attached to the back side of the component body. At least one of the side edge guard and the bottom edge guard is provided with a glue overflow groove, so that a glue overflow gap is formed between the protective edge strip and the component body, and the glue overflow gap is filled with a fastening colloid, so that the protective edge strip and the component body are fixedly connected together by the fastening colloid, thereby replacing the existing frame with the combination of the protective edge strip and the protective corner sleeve to achieve the protection purpose and prevent the frameless photovoltaic module from being damaged and cracked during handling. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings required for the description of the embodiments or the prior art. Obviously, the drawings in the following description are only the embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained according to the provided drawings.

[0017] Figure 1 Cross-sectional schematic view of the photovoltaic module provided by the first specific embodiment of the present invention;

[0018] Figure 2 For Figure 1 Cross-sectional schematic view of the protective edge strip in

[0019] Figure 3 Front view schematic of the photovoltaic module provided by the first specific embodiment of the present invention;

[0020] Figure 4 For Figure 3 Back view schematic of

[0021] Figure 5 For Figure 4 Exploded view of

[0022] Figure 6 Exploded front view of the photovoltaic module provided by the first specific embodiment of the present invention;

[0023] Figure 7 Cross-sectional schematic view of the photovoltaic module provided by the second specific embodiment of the present invention;

[0024] Figure 8 For Figure 7 Cross-sectional schematic view of the protective edge strip in

[0025] Figure 9 Exploded front view of the photovoltaic module provided by the second specific embodiment of the present invention.

[0026] The reference numerals are as follows:

[0027] Module body 1, protective edge strip 2, protective corner sleeve 3, and fastening colloid 4;

[0028] Front panel 11, upper glue film 12, battery cell 13, lower glue film 14, and back panel 15;

[0029] Side protection edge 21, bottom protection edge 22, glue overflow groove 23, glue overflow prevention protrusion 24, glue overflow prevention boss 25, and avoidance notch 26. Specific embodiments

[0030] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0031] In order to enable those skilled in the art of this technology to better understand the solution of the present invention, the present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0032] An embodiment of the present invention discloses a photovoltaic module. The photovoltaic module adopts a frameless design. As shown in the attached Figure 1 figure, the photovoltaic module includes a module body 1, a protective edge strip 2, and a protective corner sleeve 3. Among them, the protective component includes a front panel 11, an upper encapsulant film 12, solar cells 13, a lower encapsulant film 14, and a back panel 15 that are stacked in sequence from top to bottom. The front panel 11 is made of glass. The upper encapsulant film 12 is used to bond the front panel 11 and the solar cells 13. The lower encapsulant film 14 is used to bond the solar cells 13 and the back panel 15.

[0033] As shown in the attached Figures 1 to 6 figure, the protective edge strip 2 is arranged along the edge of the module body 1, and the protective corner sleeve 3 is fixedly sleeved on the top corner of the module body 1. As a preferred embodiment, the module body 1 is integrally rectangular. Each of the four side edges of the module body 1 is provided with a protective edge strip 2 to protect each side edge of the module body 1. Each of the four top corners of the module body 1 is sleeved with a protective corner sleeve 3 to protect each top corner of the module body 1. The protective edge strip 2 is in a long strip shape. The protective edge strip 2 is preferably a flexible member made of a flexible material such as rubber or silica gel, so that the protective edge strip 2 can play a role in buffering and vibration reduction to a certain extent. The protective corner sleeve 3 is triangular. A triangular groove is formed in the center of each protective corner sleeve 3. The triangular groove is matched with the top corner of the module body 1, and the protective corner sleeve 3 is adhesively fixed at the top corner of the module body 1 through an adhesive.

[0034] The protective edge strip 2 includes a side protection edge 21 and a bottom protection edge 22 that are integrally and vertically connected. The side protection edge 21 is closely attached to the side edge of the module body 1, and the bottom protection edge 22 is closely attached to the back side of the module body 1. The protective edge strip 2 protects the side edges and the two adjacent side edges on the back side of the photovoltaic module. During handling, it can prevent the side edges of two adjacent photovoltaic modules from directly contacting and colliding, and can also prevent direct contact and collision between two adjacent layers of photovoltaic modules, reducing the risk of collision damage to the photovoltaic module during transportation.

[0035] At least one of the side protection edge 21 and the bottom protection edge 22 is provided with an overflow glue groove 23, so as to form an overflow glue gap between the protection edge strip 2 and the component body 1. The overflow glue gap is filled with a fastening glue body 4 for fixedly connecting the protection edge strip 2 and the component body 1, so that the combination of the protection edge strip 2 and the protection angle sleeve 3 replaces the existing frame to achieve the protection purpose. For a photovoltaic module with a frameless design, it can effectively prevent the photovoltaic module from being damaged and broken due to bumping during handling.

[0036] In addition, the photovoltaic module adopts a frameless design, so that the front panel 11 of the component body 1 has no frame obstruction at all, which is convenient for comprehensively removing dust from the front panel 11 and avoiding a large amount of dust accumulation at the edge of the front panel 11 due to frame obstruction, achieving the dust prevention purpose.

[0037] The side protection edge 21 is provided with an anti-overflow glue protrusion 24, and the anti-overflow glue protrusion 24 abuts against the side of the component body 1 to prevent the liquid fastening glue body 4 from overflowing from the gap between the side protection edge 21 and the component body 1. As a preferred embodiment, the anti-overflow glue protrusion 24 is integrally injection-molded on the side of the side protection edge 21 facing the component body 1. Of course, the anti-overflow glue protrusion 24 can also be adhesively fixed on the side of the side protection edge 21 facing the component body 1.

[0038] An anti-overflow glue boss 25 is formed on the edge of the overflow glue groove 23, and the fastening glue body 4 abuts between the side protection edge 21 and the anti-overflow glue boss 25, and the anti-overflow glue boss 25 prevents the liquid fastening glue body 4 from overflowing from the gap between the bottom protection edge 22 and the component body 1.

[0039] In the first specific embodiment, the overflow glue groove 23 is only provided on the bottom protection edge 22, and an arc-shaped groove is formed at the connection of the side protection edge 21 and the bottom protection edge 22. The cross-section of the fastening glue body 4 is in a shape of a horizontal bar, and the fastening glue body 4 abuts between the arc-shaped groove and the anti-overflow glue boss 25. The overflow glue groove 23 is formed between the arc-shaped groove and the anti-overflow glue protrusion 24 to ensure reliable fixation of the protection edge strip 2.

[0040] In the first specific embodiment, the overflow glue gap is formed between the back side of the component body 1 and the bottom protection edge 22. The cross-section of the overflow glue gap is in a shape of a horizontal bar, and the width of the overflow glue gap is relatively narrow, which is more suitable for the relatively thin fastening glue body 4. For example, the fastening glue body 4 can be a double-sided film or a laminated film. The double-sided film is made of double-sided tape, and adhesives are coated on both opposite sides of the double-sided film, so that the double-sided film is adhesively fixed between the protection edge strip 2 and the component body 1 by the adhesives. The laminated film can be made of a photovoltaic encapsulation film, and the laminated film is laminated with the protection edge strip 2 to enhance the connection strength between the laminated film and the protection edge strip 2 and ensure more reliable connection between the laminated film and the protection edge strip 2.

[0041] In the first specific embodiment, in the direction of the bottom edge guard 22 close to the anti-overflow glue boss 25, the width of the overflow glue gap gradually decreases, that is, the closer to the edge of the component body 1, the thicker the fastening glue 4, and the more reliable the fixing of the fastening glue 4. In this way, the processing cost can be reduced by thinning the thickness of the fastening glue 4 on the premise of ensuring the reliable fixing of the fastening glue 4.

[0042] In the first specific embodiment, a plurality of anti-overflow glue protrusions 24 are arranged in parallel on the side edge guard 21. All the anti-overflow glue protrusions 24 extend along the side edge direction of the component body 1, and all the anti-overflow glue protrusions 24 are arranged in a zigzag pattern, so that the protective edge strip 2 forms multiple protections and the anti-overflow glue effect is better.

[0043] The top surface of the side edge guard 21 is flush with the top surface of the front panel 11; or, a set height difference is maintained between the top surface of the side edge guard 21 and the top surface of the front panel 11. The set height difference can be 0.5 mm, that is, the top surface of the side edge guard 21 is 0.5 mm higher than the top surface of the front panel, or the top surface of the side edge guard 21 is 0.5 mm lower than the top surface of the front panel. While effectively preventing dust accumulation, it can also protect the front panel 11 of the photovoltaic module from being damaged and enhance the anti-hail ability of the edge of the photovoltaic module.

[0044] It should be noted that a plurality of avoidance notches 26 are provided on the bottom edge guard 22 of one of the protective edge strips 2 for avoiding the junction box and preventing the protective edge strip 2 from interfering with the junction box.

[0045] Compared with the first specific embodiment, the key in the second specific embodiment is to change the structure of the protective edge strip 2. In the second specific embodiment, as shown in the appendix Figures 7 to 9 shown, the overflow glue groove 23 is provided on both the side edge guard 21 and the bottom edge guard 22.

[0046] In the second specific embodiment, the cross-section of the fastening glue 4 is L-shaped, and the solid fastening glue 4 abuts between the side surface of the side edge guard 21 and the anti-overflow glue boss 25. A side gap is formed between the side edge guard 21 and the side edge of the component body 1, and a bottom gap is formed between the bottom edge guard 22 and the back side of the component body 1. The side gap and the bottom gap are vertically connected to form an overflow glue gap, and the cross-section of the overflow glue gap is L-shaped. This overflow glue gap is suitable for the fastening glue 4 with a relatively thick thickness. For example, the fastening glue 4 can be a solidified glue block formed by the solidification of structural glue. As a preferred embodiment, the cross-section of the side gap is rectangular, and the cross-section of the bottom gap is in the shape of a straight line. On the bottom edge guard 22 close to the anti-overflow glue boss 25, the width of the bottom gap gradually decreases to balance the cost and bonding strength of the fastening glue 4.

[0047] In the second specific embodiment, an anti-overflow glue protrusion 24 is integrally and vertically fixed at the top end of the side guard 21. The anti-overflow glue protrusion 24 is parallel to the side of the component body 1. The anti-overflow glue protrusion 24 extends from the side guard 21 towards the side of the component body 1, so that the anti-overflow glue protrusion 24 plays a role in preventing glue overflow.

[0048] It should be noted that in this specification, relational terms such as first and second are only used to distinguish one entity from several other entities, and do not necessarily require or imply any actual relationship or order between these entities.

[0049] Specific examples are used in this article to elaborate on the principles and implementation manners of the present invention. The description of the above embodiments is only used to help understand the method and its core idea of the present invention. It should be pointed out that for those of ordinary skill in the art of this technology, without departing from the principle of the present invention, several improvements and modifications can be made to the present invention, and these improvements and modifications also fall within the protection scope of the claims of the present invention.

Claims

1. A photovoltaic module, characterized in that: The invention comprises a component body (1), a protective edge strip (2) and a protective corner sleeve (3), wherein the protective edge strip (2) is arranged along the edge of the component body (1), and the protective corner sleeve (3) is fixedly sleeved on the top corner of the component body (1); the protective edge strip (2) comprises a side edge strip (21) and a bottom edge strip (22) which are vertically connected in an integral manner, wherein the side edge strip (21) is arranged closely to the side edge of the component body (1), and the bottom edge strip (22) is arranged closely to the back side of the component body (1); at least one of the side edge strip (21) and the bottom edge strip (22) is provided with a glue overflow groove (23) so that a glue overflow gap is formed between the protective edge strip (2) and the component body (1), and the glue overflow gap is filled with a fastening glue (4) for fastening the protective edge strip (2) and the component body (1).

2. The photovoltaic module according to claim 1, characterized in that: The side guard (21) is provided with an anti-overflow glue protrusion (24) abutting against the side edge of the component body (1), and the anti-overflow glue protrusion (24) is used to prevent the fastening glue (4) from overflowing.

3. The photovoltaic module according to claim 2, characterized in that: An anti-overflow glue boss (25) is formed on the groove edge of the glue overflow groove (23), the fastening glue (4) abuts between the side edge guard (21) and the anti-overflow glue boss (25), and the anti-overflow glue boss (25) is used to prevent the fastening glue (4) from overflowing.

4. The photovoltaic module according to claim 3, characterized in that: The glue overflow groove (23) is arranged on the bottom protective edge (22); an arc-shaped groove is formed at the connection between the side protective edge (21) and the bottom protective edge (22), and the fastening glue (4) abuts between the arc-shaped groove and the anti-glue overflow boss (25); the glue overflow gap is formed between the back side of the component body (1) and the bottom protective edge (22), and the cross section of the glue overflow gap is in a straight line shape; in the direction of the bottom protective edge (22) approaching the anti-glue overflow boss (25), the width of the glue overflow gap gradually decreases.

5. The photovoltaic module according to claim 4, characterized in that: The fastening colloid (4) is a double-sided film or a laminated film.

6. The photovoltaic module according to claim 4, characterized in that: The side guard (21) is provided with a plurality of anti-glue overflow protrusions (24) extending in parallel along the side direction of the component body (1), and all of the anti-glue overflow protrusions (24) are arranged in a zigzag shape.

7. The photovoltaic module according to claim 3, characterized in that: The glue overflow groove (23) is provided on the side guard (21) and the bottom guard (22); the fastening glue (4) is in contact between the side of the side guard (21) and the anti-glue overflow boss (25); a side gap is formed between the side guard (21) and the side of the component body (1), and a bottom gap is formed between the bottom guard (22) and the back of the component body (1); the side gap and the bottom gap are vertically connected to form the glue overflow gap; the cross section of the side gap is rectangular, and the cross section of the bottom gap is straight; the width of the bottom gap gradually decreases on the bottom guard (22) close to the anti-glue overflow boss (25).

8. The photovoltaic module according to claim 7, characterized in that: The fastening colloid (4) is a solidified rubber block.

9. The photovoltaic module according to claim 7, characterized in that: An anti-overflow glue protrusion (24) is integrally and vertically fixed to the top of the side guard (21); the anti-overflow glue protrusion (24) is parallel to the side of the component body (1); the anti-overflow glue protrusion (24) extends from the side guard (21) towards the side of the component body (1).

10. The photovoltaic module according to any one of claims 1 to 3, characterized in that: The component body (1) comprises a front panel (11), and the top surface of the side guard (21) is flush with the top surface of the front panel (11); or, a set height difference is maintained between the top surface of the side guard (21) and the top surface of the front panel (11).

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