Solar cell module

Abstract

The utility model relates to the field of solar photovoltaic technology, in particular to a solar cell module. In the solar cell module, at least one surface of a cell sheet is provided with a separator; the battery piece is packaged between the cover plate and the back plate through an adhesive film; the peel strength between the separator and the cell is greater than the peel strength between the separator and the adhesive film. In the lamination process, the separator can also play a buffering role, the pressure borne by the battery piece in the lamination process is reduced, the physical strength of the battery piece is not damaged, the bending resistance and the hidden crack resistance are improved, and the hidden crack risk of the battery piece in lamination is reduced; the peeling strength between the separator and the battery piece is greater than the peeling strength between the separator and the adhesive film, so that the battery piece and the separator can be always kept integrated, the direct stress on the battery piece in the lamination process is reduced, the adhesion stability is improved, and the subfissure of the battery piece is avoided.

Description

TECHNICAL FIELD

[0001] The utility model relates to solar photovoltaic technical field, especially relate to a solar cell module. BACKGROUND

[0002] The conventional solar cell module is formed by laminating cover plate, adhesive film, a plurality of mutually connected cell pieces and back plate into one through laminating machine, then adding aluminum frame and junction box, and finally sealing with silica gel. SUMMARY

[0003] Therefore, the utility model provides a solar cell module, which partially or completely solves the technical problem that cell pieces are prone to partial stress and hidden cracks during lamination and transportation, and prolongs the service life of the solar cell module.

[0004] To achieve the above-mentioned purpose, the technical scheme of the utility model is as follows:

[0005] In the first aspect, the utility model embodiment provides a solar cell module, which comprises cell pieces, a cover plate, a back plate and an adhesive film.

[0006] In some embodiments, the peeling strength between the isolation piece and the adhesive film is A1, which satisfies 1N / CM≤A1≤500N / CM.

[0007] In some embodiments, the peeling strength between the adhesive film and the cell pieces is greater than the peeling strength between the adhesive film and the cover plate, and / or,

[0008] The peeling strength between the adhesive film and the cell pieces is greater than the peeling strength between the adhesive film and the back plate.

[0009] In some embodiments, the peeling strength between the adhesive film and the cover plate is A2, which satisfies 10N / CM≤A2≤200N / CM; and / or, the peeling strength between the adhesive film and the back plate is A3, which satisfies 10N / CM≤A3≤200N / CM.

[0010] In some embodiments, the isolation piece comprises a recessed part, which is recessed inward from the surface of the isolation piece away from the cell pieces.

[0011] In some embodiments, the isolation piece has a coverage S1 on the surface of the battery piece, and 0.5%≤S1≤10% is satisfied.

[0012] In some embodiments, the isolation piece has a height H1 in the thickness direction of the battery piece, and 5um≤H1≤65um is satisfied.

[0013] In some embodiments, the isolation piece is a transparent material piece.

[0014] In some embodiments, the isolation piece is at least one of a point, a block, a sheet, and a strip.

[0015] In some embodiments, the solar cell module has a plurality of the battery pieces; and the solar cell module further comprises an interconnection piece electrically connected with the battery pieces, for connecting the plurality of the battery pieces in series or in parallel.

[0016] The utility model discloses a solar cell module, one aspect, isolation piece sets up in the battery piece surface and improves the physical strength of battery piece itself, in the transfer process before laminating, a plurality of battery pieces are stacked and set, and the isolation piece makes the surface between two adjacent battery pieces have a gap, plays the isolation protection effect to two adjacent battery pieces, thereby the surface of battery piece between two adjacent battery pieces will not be scratched due to contact, avoids the influence of scratch on battery piece performance, in the laminating process, the isolation piece can also play the buffering effect, reduces the pressure that battery piece bears in the laminating process, keeps the physical strength of battery piece itself from being damaged, improves the bending resistance and the ability of crack resistance simultaneously, reduces the risk of battery piece laminating crack, on the other hand, the peeling strength between the isolation piece and battery piece is greater than the peeling strength between the isolation piece and adhesive film, makes battery piece and isolation piece can keep integrity, in the laminating process, the isolation piece will not be offset, avoids the damage to battery piece, reduces the crack risk, and the isolation piece increases the contact structure of battery piece and adhesive film, forms the adhesive coverage condition of point surface contact, can reduce the stress that battery piece directly bears in the laminating process, thereby avoids the crack of battery piece, also can increase the stability of assembly, reduces the risk of crack due to the inertia of battery piece in the process of circulation and transfer.

[0017] The above description is only a summary of the technical scheme of the utility model, in order to more clearly understand the technical means of the utility model, can be implemented according to the content of the specification, and in order to let the above and other purposes, characteristics and advantages of the utility model can be more obvious and easy to understand, the following specific embodiments of the utility model are described in detail.

[0018] Embodiment. BRIEF DESCRIPTION OF DRAWINGS

[0019] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the drawings needed in the embodiment description will be briefly introduced as follows.

[0020] Figure 1 A partial structure schematic diagram of a solar cell module according to the embodiment of the present application;

[0021] Figure 2 A structure schematic diagram of a connection between a cell sheet and a spacer according to the first embodiment of the present application;

[0022] Figure 3 A structure schematic diagram of a connection between a cell sheet and a spacer according to the second embodiment of the present application;

[0023] Figure 4 A structure schematic diagram of a connection between a cell sheet and a spacer according to the third embodiment of the present application.

[0024] Explanation of reference signs:

[0025] 10, cell sheet; 11, light receiving surface; 12, back light surface;

[0026] 20, adhesive film;

[0027] 30, spacer; 32, recessed part; 33, covering layer; 34, cavity;

[0028] 40, cover plate; 50, back plate. DETAILED DESCRIPTION

[0029] Exemplary embodiments of the present application will be described in detail with reference to the drawings. Although exemplary embodiments of the present application are shown in the drawings, it is understood that the present application can be implemented in various forms and should not be limited by the embodiments set forth herein. Rather, these embodiments are provided so that the present application can be more thoroughly understood, and the scope of the present application can be accurately conveyed to those skilled in the art.

[0030] Referring to Figure 1 the drawings, the present application discloses a solar cell module, which comprises a cell sheet 10, a cover plate 40, a back plate 50 and an adhesive film 20. At least one side of the cell sheet 10 is provided with a spacer 30, and the cell sheet 10 is encapsulated between the cover plate 40 and the back plate 50 by the adhesive film 20. The peeling strength between the spacer 30 and the cell sheet 10 is greater than the peeling strength between the spacer 30 and the adhesive film 20.

[0031] The solar cell module of the embodiment of the present application, the spacer 30 is arranged on the surface of the cell sheet 10 to improve the physical strength of the cell sheet 10 itself; on the one hand, during the transfer process before lamination, the plurality of cell sheets 10 are stacked, the spacer 30 makes the gap between the surfaces of the adjacent two cell sheets 10, and the surfaces of the adjacent two cell sheets 10 will not be scratched due to contact, thereby avoiding the influence of scratching on the performance of the cell sheet 10; on the other hand, during the lamination process, the spacer 30 can also play a buffering effect, reducing the pressure borne by the cell sheet 10 during the lamination process, maintaining the physical strength of the cell sheet 10 itself without damage, improving the bending and crack resistance, and reducing the risk of lamination crack of the cell sheet 10.

[0032] The peeling strength between the spacer 30 and the cell sheet 10 is greater than the peeling strength between the spacer 30 and the adhesive film 20, so that the cell sheet 10 and the spacer 30 can always remain integrated, the spacer 30 will not be offset during the lamination process, thereby avoiding damage to the cell sheet 10 and reducing the risk of cracking, and the spacer 30 increases the contact structure of the cell sheet 10 and the adhesive film 20, forms a point-surface contact adhesive coverage, reduces the stress directly borne by the cell sheet 10 during the lamination process, thereby avoiding the cracking of the cell sheet 10, and also increasing the stability of the module and reducing the risk of cracking of the cell sheet 10 due to inertia during the transfer and transportation process.

[0033] In some embodiments, the spacer 30 can be arranged as a transparent material, such as transparent thermoplastic glue or transparent light curing glue, etc., on the one hand to avoid blocking the light, and on the other hand to improve the light trapping property to utilize more sunlight energy and improve the light absorption efficiency and conversion efficiency of the solar cell module.

[0034] The peeling strength refers to the maximum force required for peeling the materials adhered together from the contact surface at a unit width. It reflects the bonding strength of the materials. In the embodiment of the present application, the peeling strength is the adhesion strength between the cell sheet 10 and the adhesive film 20, the adhesive film 20 and the back plate 50, the adhesive film 20 and the cover plate 40, the cell sheet 10 and the spacer 30, the spacer 30 and the adhesive film 20, etc. The peeling strength is related to the durability and performance of the solar cell module under various environmental conditions.

[0035] In the current technology, the peeling strength has various test methods, and it can be understood that the embodiment of the present application does not make specific limitation on how to measure the peeling strength, for example, using a special test device such as a peeling strength tester. For example, manually peeling the adhesive film 20 and the cell sheet 10, and measuring using a tensile meter.

[0036] In some embodiments, the battery piece 10 is provided with a light-receiving surface 11 and a back light surface 12, and the spacer 30 is arranged on the light-receiving surface 11 of the battery piece 10. When a plurality of battery pieces 10 are stacked before lamination, the light-receiving surface 11 of the battery piece 10 is in contact with the back light surface 12 of the adjacent battery piece 10. The spacer 30 can avoid scratching the back light surface 12 of the adjacent battery piece 10 and the structure on the back light surface 12, thereby affecting the performance of the battery piece 10. During the lamination process, the spacer 30 also has a buffering effect, which reduces the pressure on the light-receiving surface 11 of the battery piece 10 during the lamination process, maintains the physical strength of the battery piece 10, improves the bending and crack resistance, and reduces the risk of lamination cracks of the battery piece 10. When the solar cell module is in use, the spacer 30 can also increase the light trapping at the spacer 30, so that the incident light is reflected multiple times at the spacer 30, prolongs the path length of the light inside the solar cell module, thereby increasing the interaction time of the photons and the battery piece 10, improving the light absorption efficiency, and using more sunlight energy to improve the conversion efficiency of the solar cell.

[0037] In some embodiments, the spacer 30 is arranged on the back light surface 12 of the battery piece 10. When a plurality of battery pieces 10 are stacked before lamination, the spacer 30 on the back light surface 12 of the battery piece 10 can be in contact with the light-receiving surface 11 of the adjacent battery piece 10, thereby avoiding scratching the light-receiving surface of the battery piece 10 and affecting the performance of the battery piece 10. During the lamination process, the spacer 30 also has a buffering effect, which reduces the pressure on the back light surface 12 of the battery piece 10 during the lamination process, maintains the physical strength of the battery piece 10, improves the bending and crack resistance, and reduces the risk of lamination cracks of the battery piece 10.

[0038] In some embodiments, the spacer 30 is arranged on the light-receiving surface 11 and the back light surface 12 of the battery piece 10. The spacer 30 forms a point-surface contact coverage with the light-receiving surface 11, the back light surface 12, and the adhesive film 20. The coverage area of the adhesive film 20 is larger, the flowability of the adhesive is more moderate during the lamination process, the stability of the adhesion is increased, the adhesion between the adhesive film 20 and the battery piece 10 is more firm, and even under the action of gravity for a long time, or in the case of vibration and shaking, the phenomenon of delamination is not easy to occur, the risk of delamination is reduced, and the service life of the solar cell module is prolonged.

[0039] In a specific embodiment, the cover plate 40 is arranged on the front surface of the solar cell module. The cover plate 40 can effectively block the direct impact and damage of dust, rain, hail, etc. on the battery piece 10, while allowing sunlight to penetrate to maximize the photovoltaic conversion efficiency.

[0040] The backsheet 50 is located on the front and back of the solar cell module, primarily serving to provide insulation, waterproofing, moisture protection, UV resistance, and mechanical strength. The backsheet 50 is typically composed of multiple layers of composite materials, including polyimide (PI), polyester (PET), or polypropylene (PP), which possess good chemical and thermal stability. The main function of the backsheet 50 is to protect the solar cell module from environmental factors such as moisture, oxygen, ultraviolet radiation, and other harmful substances, while providing necessary insulation.

[0041] Electrical isolation to prevent current leakage.

[0042] In some embodiments, the peel strength between the separator 30 and the adhesive film 20 is A1, satisfying: 1 N / cm ≤ A1 ≤ 500 N / cm. In some embodiments, the peel strength A1 between the separator 30 and the adhesive film 20... 11 The following conditions must be met: 20 N / cm ≤ A1 ≤ 300 N / cm. Within this range, the adhesion strength requirement between the separator 30 and the adhesive film 20 is met. During the lamination process, the separator 30 will not shift arbitrarily and cause damage to the battery cell 10, thus improving the stability of the separator 30 on the surface of the battery cell 10. Furthermore, the battery cell 10 and the separator 30 can always remain integrated, increasing the contact structure between the battery cell 10 and the adhesive film 20, forming a point-to-surface contact adhesive film 20 coverage. This reduces the stress directly experienced by the battery cell 10 during the lamination process while increasing the stability of the adhesive bond, preventing microcracks from appearing in the battery cell 10.

[0043] The peel strength A1 between the separator 30 and the adhesive film 20 is specifically set according to the usage requirements. For example, the peel strength A1 between the separator 30 and the adhesive film 20 is one of 1N / CM, 2N / CM, 5N / CM, 10N / CM, 15N / CM, 20N / CM, 30N / CM, 50N / CM, 100N / CM, 120N / CM, 150N / CM, 180N / CM, 200N / CM, 250N / CM, 300N / CM, 350N / CM, 0N / CM, 450N / CM, and 500N / CM, as well as multiple values ​​between the above peel strengths.

[0044] In some embodiments, the peel strength between the adhesive film 20 and the battery cell 10 is greater than the peel strength between the adhesive film 20 and the cover plate 40, and / or, the peel strength between the adhesive film 20 and the battery cell 10 is greater than the peel strength between the adhesive film 20 and the back plate 50.

[0045] The solar cell module of the embodiment of the present application has a large adhesion strength between the adhesive film 20 and the cell sheet 10, and the adhesive film 20 and the cell sheet 10 are more firmly bonded. Even if the solar cell module is used for a long time under the action of gravity or in a shaking or vibrating condition, delamination is not likely to occur, the risk of delamination is reduced, and the service life of the solar cell module is prolonged.

[0046] The spacer 30 arranged on the cell sheet 10 can form a plurality of adhesive points, and the adhesive film 20 and the cell sheet 10 are more firmly bonded through the plurality of adhesive points, and the adhesive film 20 covers the cell sheet 10 in a point-surface contact manner. The adhesive film 20 has a larger coverage area, and the adhesive film 20 has more moderate flowability during the lamination process, the edge of the adhesive film 20 is not easy to be raised, and the height difference or step between the edge of the cell sheet 10 and the adhesive film 20 is reduced. The adhesive film 20 in contact with the cell sheet 10 has a relatively small hardness due to the presence of the spacer 30, thereby reducing the pressure borne by the cell sheet 10 during the lamination process and reducing the risk of hidden cracking of the cell sheet 10.

[0047] In the above structure of the embodiment of the present application, the peeling strength between the adhesive film 20 and the cell sheet 10 is greater than the peeling strength between the adhesive film 20 and the cover plate 40, or the peeling strength between the adhesive film 20 and the cell sheet 10 is greater than the peeling strength between the adhesive film 20 and the back plate 50, or the peeling strength between the adhesive film 20 and the cell sheet 10 is greater than the peeling strength between the adhesive film 20 and the cover plate 40 and greater than the peeling strength between the adhesive film 20 and the back plate 50. In this way, through the strong bonding of the adhesive film 20 and the cell sheet 10, the sealing and waterproof effect of the cell sheet 10 is achieved, and the photoelectric conversion stability is increased.

[0048] In some embodiments, the peeling strength between the adhesive film 20 and the cover plate 40 is A2, which satisfies: 10N / CM≤A2≤200N / CM. In the embodiment of the present application, when the peeling strength A2 between the adhesive film 20 and the cover plate 40 is in the above range, the adhesion strength between the adhesive film 20 and the cover plate 40 is effectively ensured, the delamination phenomenon is avoided, the risk of delamination is reduced, and the service life of the solar cell module is prolonged.

[0049] The peeling strength A2 between the adhesive film 20 and the cover plate 40 is specifically set according to the use requirements, for example, the peeling strength A2 between the adhesive film 20 and the cover plate 40 is one of 10N / CM, 15N / CM, 20N / CM, 30N / CM, 50N / CM, 70N / CM, 90N / CM, 100N / CM, 120N / CM, 1N / CM, 150N / CM, 170N / CM, 180N / CM, 200N / CM, and a plurality of values between the above peeling strengths.

[0050] In some embodiments, the peeling strength between the adhesive film 20 and the backboard 50 is A3, satisfying: 10N / CM≤A3≤200N / CM. In the embodiments of the present application, when the peeling strength A2 between the adhesive film 20 and the backboard 50 is within the above range, the adhesion strength between the adhesive film 20 and the backboard 50 is effectively ensured, the delamination phenomenon is avoided, the delamination risk is reduced, and the service life of the solar cell module is prolonged.

[0051] The peeling strength A3 between the adhesive film 20 and the backboard 50 is specifically set according to the use requirements, for example, the peeling strength A3 between the adhesive film 20 and the backboard 50 is one of 10N / CM, 15N / CM, 20N / CM, 30N / CM, 50N / CM, 70N / CM, 90N / CM, 100N / CM, 120N / CM, 1N / CM, 150N / CM, 170N / CM, 180N / CM, 200N / CM, and a plurality of values between the above peeling strengths.

[0052] In some embodiments, referring to Figure 2 As shown, the spacer 30 includes a recessed portion 32 recessed inwardly from the surface of the spacer 30 away from the cell sheet 10.

[0053] In the solar cell module of the embodiments of the present application, the setting of the recessed portion 32 can increase the light trapping property at the spacer 30, so that the incident light is reflected multiple times at the spacer 30, the path length of the light inside the solar cell module is prolonged, the interaction time of the photons and the cell sheet 10 is increased, the light absorption efficiency is improved, more solar energy is utilized, and the conversion efficiency of the solar cell is improved. Part of the adhesive film 20 is located in the recessed portion 32 of the spacer 30, the coverage area of the adhesive film 20 is larger, the flowability of the adhesive is more moderate during the lamination process, the edge of the adhesive film 20 is not easy to be raised, the height difference or step between the edge of the cell sheet 10 and the adhesive film 20 is reduced, and the stability of the adhesion is increased, so that the phenomenon of the cell sheet 10 deviating due to the inertia during the transfer and transportation process is avoided, and the case of the cell sheet 10 being cracked is avoided.

[0054] In some embodiments, referring to Figure 3 and Figure 4 As shown, the spacer 30 is further provided with a covering layer 33 located on the side of the recessed portion 32 away from the cell sheet, and the covering layer 33 covers part or all of the opening of the recessed portion 32.

[0055] In the embodiments of the present application, the light trapping property of the spacer 30 is increased by the cover layer 33, so that the incident light is reflected more times at the spacer 30, the path length of the light in the solar cell module is prolonged, the interaction time of the photons and the solar cell is increased, the light absorption efficiency is improved, more solar energy is utilized, and the conversion efficiency of the solar cell is improved. During the lamination process, the cover layer 33 further increases the buffering effect of the spacer 30, reduces the pressure borne by the solar cell during the lamination process, improves the bending and crack resistance, and reduces the risk of lamination crack of the solar cell.

[0056] In some embodiments, the spacer 30 is provided with at least one cavity 34, which is isolated from the outside of the spacer 30. The cavity 34 of the embodiments of the present application can also increase the light trapping property of the spacer 30, so as to improve the conversion efficiency of the solar cell. During the lamination process, the cavity 34 further increases the buffering effect of the spacer 30, reduces the pressure borne by the solar cell during the lamination process, improves the bending and crack resistance, and reduces the risk of lamination crack of the solar cell.

[0057] In some embodiments, the coverage of the spacer 30 on the surface of the solar cell is S1, and 0.5%≤S1≤10%.

[0058] In the embodiments of the present application, when the coverage S1 of the spacer 30 on the surface of the solar cell is within the above range, the light trapping property is increased, so that the incident light is reflected more times at the spacer 30, the path length of the light in the solar cell module is prolonged, the interaction time of the photons and the solar cell is increased, the light absorption efficiency is improved, more solar energy is utilized, and the conversion efficiency of the solar cell is improved. The physical strength of the solar cell itself is also effectively improved, and the buffering effect is achieved during the lamination process, so as to reduce the pressure borne by the solar cell during the lamination process, maintain the physical strength of the solar cell itself, improve the bending and crack resistance, and reduce the risk of lamination crack of the solar cell. The point and surface contact coverage formed by the spacer 30, the solar cell, and the adhesive film 20 reduces the stress directly borne by the solar cell during the lamination process, increases the stability of the adhesion, avoids the phenomenon that the solar cell is deviated due to the inertia during the transfer and transportation process, and thus avoids the lamination crack of the solar cell.

[0059] In some embodiments, the height of the spacer 30 in the thickness direction of the solar cell 10 is H1, satisfying 5μm≤H1≤65μm. In this embodiment, when the height H1 of the spacer 30 is within the above range, on the one hand, the spacer 30 can increase light trapping properties, causing incident light to undergo multiple reflections at the spacer 30, extending the path length of light inside the solar cell module, thereby increasing the interaction time between photons and the solar cell 10, improving light absorption efficiency, utilizing more solar energy, and improving the conversion efficiency of the solar cell. On the other hand, a more appropriate height of the spacer 30 can also, to a certain extent, slow down the flow of the colloid during lamination, reduce the generation of bubbles in the adhesive film 20 during lamination, and improve the point-to-surface contact coverage formed by the spacer 30, the solar cell 10, and the adhesive film 20. This reduces the stress directly experienced by the solar cell 10 during lamination while increasing the stability of the adhesive, thereby reducing stress and preventing the solar cell 10 from shifting and developing microcracks due to inertia during flow and transport.

[0060] The height H1 of the isolation element 30 is specifically set according to the usage requirements. For example, the height H1 of the isolation element 30 is one of 5μm, 10μm, 15μm, 20μm, 25μm, 30μm, 35μm, 45μm, 50μm, 55μm, 60μm, and 65μm, as well as multiple values ​​between the above-mentioned peel strength.

[0061] In some embodiments, it is understood that the specific shape of the isolation member 30 is set according to the usage requirements, and the embodiments of this application do not specifically limit it. For example, the isolation member 30 is at least one of dot-shaped, block-shaped, sheet-shaped, and strip-shaped.

[0062] In some embodiments, the solar cell module has a plurality of cells 10; the solar cell module also includes interconnects electrically connected to the cells 10 for connecting the plurality of cells 10 in series or in parallel.

[0063] In this embodiment, the placement of the spacer 30 and the peel strength between the spacer 30 and the battery cell 10 act as a buffer during the lamination process, reducing the stress on the battery cell 10 at the interconnect during lamination, thereby reducing microcracks in the battery cell 10 during lamination. The point-to-surface contact coverage formed by the spacer 30, the battery cell 10, and the adhesive film 20 slows down the flow of the adhesive during lamination, thereby improving the fixation effect on the interconnect and reducing damage to the battery cell 10 caused by interconnect displacement.

[0064] In some embodiments, the solar cell module includes a cell 10, a cover plate 40, a back sheet 50, and an encapsulating film 20; at least one side of the cell 10 is provided with a spacer 30, and the cell 10 is encapsulated between the cover plate 40 and the back sheet 50 by the encapsulating film 20; the peel strength between the spacer 30 and the cell 10 is greater than the peel strength between the spacer 30 and the encapsulating film 20, the peel strength between the encapsulating film 20 and the cell 10 is greater than the peel strength between the encapsulating film 20 and the cover plate 40, and the peel strength between the encapsulating film 20 and the cell 10 is greater than the peel strength between the encapsulating film 20 and the back sheet 50.

[0065] In the above-described solar cell module of this application embodiment, the separator 30 disposed on the surface of the cell 10 improves the physical strength of the cell 10 itself. During the lamination process, the separator 30 can also play a buffering role, reducing the pressure on the cell 10 during the lamination process. While maintaining the physical strength of the cell 10 itself without damage, it improves the ability to resist bending and microcracks, and reduces the risk of microcracks in the lamination of the cell 10.

[0066] The peel strength between the separator 30 and the battery cell 10 is greater than the peel strength between the separator 30 and the adhesive film 20, ensuring that the battery cell 10 and the separator 30 remain integrated. Simultaneously, the separator 30 increases the contact structure between the battery cell 10 and the adhesive film 20, creating a point-to-surface contact coverage. This reduces the stress directly experienced by the battery cell 10 during lamination and increases the stability of the adhesive bond. It prevents the battery cell 10 from shifting due to inertia during flow and transport, thus avoiding microcracks in the battery cell 10. Furthermore, during lamination, the separator 30 will not shift arbitrarily, causing damage to the battery cell 10, thus improving the stability of the separator 30 on the surface of the battery cell 10.

[0067] The peel strength between the adhesive film 20 and the solar cell 10 is greater than the peel strength between the adhesive film 20 and the cover plate 40, and also greater than the peel strength between the adhesive film 20 and the back sheet 50. The adhesion strength between the adhesive film 20 and the solar cell 10 is greater, and the adhesion between the adhesive film 20 and the solar cell 10 is stronger. Even if used for a long time under gravity, or if it is subjected to vibration or shaking, it is not easy for delamination to occur, which reduces the risk of delamination and thus extends the service life of the solar cell module.

[0068] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

[0069] The various embodiments in this specification are described in a related manner. Similar or identical parts between embodiments can be referred to mutually. Each embodiment focuses on describing the differences from other embodiments. For embodiments of devices, electronic devices, computer-readable storage media, and computer program products containing instructions, the descriptions are relatively simple because they are basically similar to the method embodiments; relevant parts can be referred to the descriptions of the method embodiments.

[0070] The above description is merely a preferred embodiment of this utility model and is not intended to limit the scope of protection of this utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model are included within the scope of protection of this utility model.

Claims

1. A solar cell module, characterized in that, The solar cell module includes, A battery cell (10); at least one side of the battery cell (10) is provided with an insulating member (30); It also includes a cover plate (40), a back plate (50), and an adhesive film (20); The battery cell (10) is encapsulated between the cover plate (40) and the back plate (50) by the adhesive film (20); The peel strength between the separator (30) and the battery cell (10) is greater than the peel strength between the separator (30) and the adhesive film (20).

2. The solar cell module according to claim 1, characterized in that, The peel strength between the separator (30) and the adhesive film (20) is A1, which satisfies: 1N / CM≤A1≤500N / CM.

3. The solar cell module according to claim 1, characterized in that, The peel strength between the adhesive film (20) and the battery cell (10) is greater than the peel strength between the adhesive film (20) and the cover plate (40), and / or, The peel strength between the adhesive film (20) and the battery cell (10) is greater than the peel strength between the adhesive film (20) and the backsheet (50).

4. The solar cell module according to any one of claims 1 to 3, characterized in that, The peel strength between the adhesive film (20) and the cover plate (40) is A2, which satisfies: 10N / CM≤A2≤200N / CM; And / or, The peel strength between the adhesive film (20) and the back plate (50) is A3, which satisfies: 10N / CM≤A3≤200N / CM.

5. The solar cell module according to claim 1, characterized in that, The separator (30) includes a recess (32) that is recessed into the separator (30) from the surface of the separator (30) away from the battery cell (10).

6. The solar cell module according to claim 1, characterized in that, The coverage of the separator (30) on the surface of the battery cell (10) is S1, which satisfies: 0.5% ≤ S1 ≤ 10%.

7. The solar cell module according to claim 1, characterized in that, In the thickness direction of the battery cell (10), the height of the separator (30) is H1, which satisfies 5μm≤H1≤65μm.

8. The solar cell module according to claim 1, characterized in that, The isolation component (30) is made of transparent material.

9. The solar cell module according to claim 1, characterized in that, The isolation element (30) is at least one of the following: dot-shaped, block-shaped, sheet-shaped, and strip-shaped.

10. The solar cell module according to any one of claims 1-3, characterized in that, The solar cell module has a plurality of said solar cells (10); the solar cell module also includes, Interconnectors, electrically connected to the battery cells (10), are used to connect multiple battery cells (10) in series or in parallel.

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