Solar panel

Abstract

The utility model provides a solar panel. The solar panel comprises a power generation unit; the flat conductive connecting piece is electrically connected with the power generation unit, and the thickness of the flat conductive connecting piece is smaller than the width of the flat conductive connecting piece; the insulating layer is coated on the surface of the flat conductive connecting piece; and the protective layer covers the surface of the insulating layer and is used for preventing external substances from entering the interior of the flat conductive connecting piece. According to the solar panel provided by the utility model, the thickness of the flat conductive connecting piece is smaller than the width of the flat conductive connecting piece, so that the flat conductive connecting piece is not easy to break, and the fixation of the flat conductive connecting piece is facilitated. Meanwhile, the problem that the flat conductive connecting piece is hardened and is easy to break due to the fact that glue enters the flat conductive connecting piece can be avoided.

Description

Technical Field

[0001] The utility model relates to the technical field of solar cells, and more particularly to a solar panel. Background Art

[0002] At present, the wires of solar panels generally use round cables or flat cables. The diameter of round cables is large, and in application scenarios such as RVs, it is difficult to route the wires. Moreover, when the round cables are set at a higher position, the wind resistance is large, and it is very difficult to fix the round cables by using an adhesive fixing method, resulting in poor stability of the round cables. For flat cables, in order to ensure the flat function and facilitate bending and routing, the glue layer on the surface of the output wires is very thin, and the internal output wires are easily broken after long-term bending. The braided copper strip has strong bendability, but the glue easily penetrates into the braided copper strip during the production process, causing the braided copper strip to harden, and thus the wire is easily broken.

[0003] Therefore, how to design a solar panel that facilitates the fixed installation of wires and ensures that the wires are not easily damaged has become an urgent problem to be solved at present. Summary of the Utility Model

[0004] The utility model aims to at least solve the problems in the prior art or related technologies that the wires on the solar panel are not easily fixed and are easily broken.

[0005] To this end, a first aspect of the utility model provides a solar panel.

[0006] In view of this, a first aspect of the utility model proposes a solar panel, including: a power generation unit; a flat conductive connector electrically connected to the power generation unit, the thickness of the flat conductive connector being less than the width of the flat conductive connector; an insulating layer covering the surface of the flat conductive connector; and a protective layer covering the surface of the insulating layer for preventing external substances from entering the flat conductive connector.

[0007] The solar panel provided by the utility model includes a power generation unit, a flat conductive connector, an insulating layer, and a protective layer. The power generation unit is electrically connected to the flat conductive connector, thereby realizing the collection and transmission of electric energy. The thickness of the flat conductive connector is less than the width of the flat conductive connector, which can ensure that the flat conductive connector is not easily broken and is also conducive to the fixation of the flat conductive connector. The insulating layer covers the surface of the flat conductive connector, which can insulate the flat conductive connector and prevent short circuits. Among them, in order to prevent external substances from entering the flat conductive connector, for example, during the manufacturing process, glue easily enters the flat conductive connector. Therefore, in this application, a protective layer is provided on the surface of the flat conductive connector to protect the flat conductive connector, thereby avoiding the problem that the flat conductive connector hardens and is easily broken due to the glue entering the flat conductive connector.

[0008] The solar panel provided by the present utility model may further have the following additional technical features:

[0009] In some embodiments, optionally, the flat conductive connector includes: a plurality of flat conductors spaced apart; and a plurality of insulating layers, each insulating layer covering one flat conductor.

[0010] In this embodiment, the flat conductive connector includes a plurality of flat conductors. The flat conductors can be used for conducting electricity, and the insulating layers can insulate the flat conductors to prevent short circuits. The plurality of flat conductors are spaced apart, and each insulating layer covers one flat conductor, thereby achieving insulation between the plurality of flat conductors.

[0011] Among them, the plurality of flat conductors include a positive conductor and a negative conductor.

[0012] In some embodiments, optionally, the plurality of flat conductors are spaced apart along the width direction of the flat conductor, and the spacing distance between the plurality of flat conductors is greater than or equal to 10 mm.

[0013] In this embodiment, the plurality of flat conductors are spaced apart along the width direction of the flat conductor, so that the formed flat conductive connector as a whole is also flat, which is beneficial for bending and fixing the flat conductive connector. The spacing distance between the plurality of flat conductors is greater than or equal to 10 mm, which is beneficial for insulation between the plurality of flat conductors and the setting of the insulating layers. Among them, after the insulating layers are set, the gaps between the plurality of flat conductors can also be filled with a glue film layer to fix the plurality of flat conductors and prevent the plurality of flat conductors from moving.

[0014] In some embodiments, optionally, the solar panel further includes: a glue film layer disposed on the power generation unit for bonding the protective layer to fix the flat conductive connector; and a glue-retaining groove disposed on the outer surface of the protective layer for cooperating with the glue film layer for bonding.

[0015] In this embodiment, the solar panel further includes a glue film layer and a glue-retaining groove. The glue film layer is disposed on the power generation unit and can bond the protective layer, thereby fixing the flat conductive connector. The glue-retaining groove is disposed on the outer surface of the protective layer and can cooperate with the glue film layer for bonding. By providing the glue-retaining groove, the contact area between the protective layer and the glue film layer can be increased, so that the flat conductive connector can be fixed more stably.

[0016] In some embodiments, optionally, the glue-retaining groove includes at least one of the following or a combination thereof: a corrugated glue-retaining groove, a concave-convex glue-retaining groove, a honeycomb glue-retaining groove, and a mesh glue-retaining groove.

[0017] In this embodiment, the glue retention groove includes at least one of the following or a combination thereof: corrugated glue retention groove, concave-convex glue retention groove, honeycomb glue retention groove, and mesh glue retention groove. Specifically, different glue retention grooves can be set according to actual situations to meet different working conditions.

[0018] In some embodiments, optionally, the insulating layer includes a polyimide tape; and / or the protective layer is adhered to the surface of the insulating layer.

[0019] In this embodiment, the insulating layer includes a polyimide tape, and the polyimide tape has high temperature resistance, good electrical insulation, flame retardancy, and radiation resistance. And / or the protective layer is adhered to the surface of the insulating layer. Specifically, high molecular materials such as a soft polyvinyl chloride layer, a polyester layer, and a fluoroplastic layer can be used for adhesion. These high molecular materials can prevent the insulating layer from being scratched or aged, and at the same time have a flame retardant effect, which can ensure the electrical performance of the flat conductive connector.

[0020] In some embodiments, optionally, the flat conductive connector includes a braided copper tape, and the braided copper tape includes multiple tinned copper wires.

[0021] In this embodiment, the flat conductive connector includes a braided copper tape, and the braided copper tape includes multiple tinned copper wires. The braided copper tape can maintain good flexibility and can ensure that it will not break under long-term bending. Multiple tinned copper wires can be made into a braided copper tape to ensure the conductivity.

[0022] In some embodiments, optionally, the diameter of the tinned copper wire is greater than or equal to 0.02 mm and less than or equal to 0.1 mm.

[0023] In this embodiment, limiting the diameter of the tinned copper wire between 0.02 mm and 0.1 mm is beneficial for manufacturing the braided copper tape, ensuring the flexibility of the braided copper tape, and can also guarantee the conductivity.

[0024] In some embodiments, optionally, the total thickness of the flat conductive connector, the insulating layer, and the protective layer is greater than or equal to 1 mm and less than or equal to 3 mm.

[0025] In this embodiment, limiting the total thickness of the flat conductive connector, the insulating layer, and the protective layer between 1 mm and 3 mm is beneficial for bending the flat conductive connector.

[0026] In some embodiments, optionally, the thickness of the flat conductive connector is greater than or equal to 0.1 mm and less than or equal to 0.5 mm.

[0027] In this embodiment, limiting the thickness of the flat conductive connector between 0.1 mm and 0.5 mm is beneficial for bending the flat conductive connector.

[0028] In some embodiments, optionally, the width of the flat conductive connector is greater than or equal to 2 mm and less than or equal to 10 mm.

[0029] In this embodiment, the width of the flat conductive connector is greater than or equal to 2 mm and less than or equal to 10 mm, which is conducive to the fixation of the flat conductive connector.

[0030] In some embodiments, optionally, the thickness of the insulating layer is greater than or equal to 0.01 mm and less than or equal to 0.1 mm.

[0031] In this embodiment, the thickness of the insulating layer is greater than or equal to 0.01 mm and less than or equal to 0.1 mm, which can not only effectively achieve insulation and prevent short circuits, but also prevent the flat conductive connector from being too thick and affecting the bending performance.

[0032] The additional aspects and advantages of the present utility model will become apparent in the following description section or be learned through the practice of the present utility model. BRIEF DESCRIPTION OF THE DRAWINGS

[0033] The above and / or additional aspects and advantages of the present utility model will become apparent and be readily understood from the description of the embodiments in conjunction with the following drawings, in which:

[0034] Figure 1 FIG. 1 shows one of the partial structural schematic diagrams of the solar panel according to an embodiment of the present utility model;

[0035] Figure 2 FIG. 2 shows another partial structural schematic diagram of the solar panel according to an embodiment of the present utility model;

[0036] Figure 3 FIG. 3 shows the structural schematic diagram of the flat conductor according to an embodiment of the present utility model;

[0037] Figure 4 FIG. 4 shows one of the structural schematic diagrams of the solar panel according to an embodiment of the present utility model;

[0038] Figure 5 FIG. 5 shows another structural schematic diagram of the solar panel according to an embodiment of the present utility model.

[0039] Among them, Figures 1 to 5 the corresponding relationship between the reference numerals in the drawings and the component names is as follows:

[0040] 1 solar panel, 12 power generation unit, 14 flat conductive connector, 142 flat conductor, 1422 braided copper tape, 1424 tinned copper wire, 144 insulating layer, 16 protective layer, 162 glue-retaining groove, 18 glue film layer. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0041] In order to more clearly understand the above-mentioned objects, features, and advantages of the present utility model, the present utility model will be further described in detail below in conjunction with the accompanying drawings and specific embodiments. It should be noted that, without conflict, the embodiments of the present application and the features in the embodiments can be combined with each other.

[0042] In the following description, many specific details are set forth in order to fully understand the present utility model. However, the present utility model can also be implemented in other ways different from those described herein. Therefore, the protection scope of the present utility model is not limited by the specific embodiments disclosed below.

[0043] Next, refer to Figures 1 to 5 to describe a solar panel proposed according to some embodiments of the present utility model.

[0044] According to an embodiment of the first aspect of the present utility model, as Figure 1 , Figure 2 , Figure 3 , Figure 4 , and Figure 5 shown, a solar panel 1 is proposed, which includes a power generation unit 12, a flat conductive connector 14, an insulating layer 144, and a protective layer 16. The flat conductive connector 14 is electrically connected to the power generation unit 12, and the thickness of the flat conductive connector 14 is less than the width of the flat conductive connector 14. The insulating layer 144 is coated on the surface of the flat conductive connector 14. The protective layer 16 covers the surface of the insulating layer 144 and is used to prevent external substances from entering the inside of the flat conductive connector 14.

[0045] The solar panel 1 provided by the present utility model includes a power generation unit 12, a flat conductive connector 14, an insulating layer 144, and a protective layer 16. The power generation unit 12 is electrically connected to the flat conductive connector 14 to achieve the collection and transmission of electric energy. The thickness of the flat conductive connector 14 is less than the width of the flat conductive connector 14, which can ensure that the flat conductive connector 14 is not easily broken and is also conducive to the fixation of the flat conductive connector 14. The insulating layer 144 is coated on the surface of the flat conductive connector 14, which can insulate the flat conductive connector 14 and prevent short circuits. Among them, in order to prevent external substances from entering the inside of the flat conductive connector 14, for example, during the manufacturing process, glue is likely to enter the inside of the flat conductive connector 14. Therefore, in the present application, a protective layer 16 is provided on the surface of the flat conductive connector 14 to protect the flat conductive connector 14, thereby avoiding the problem that the flat conductive connector 14 hardens and is easily broken due to glue entering the inside of the flat conductive connector 14.

[0046] Among them, Figure 1 , Figure 2 , Figure 4 , and Figure 5In this context, A refers to the width direction of the flat conductive connector, and B refers to the thickness direction of the flat conductive connector.

[0047] In some embodiments, optionally, the solar panel 1 is a foldable solar panel.

[0048] In some embodiments, optionally, the flat conductive connector 14 includes: a plurality of flat conductors 142, which are arranged at intervals; and a plurality of insulating layers 144, each of which coats one flat conductor 142.

[0049] In this embodiment, the flat conductive connector 14 includes a plurality of flat conductors 142. The flat conductors 142 can be used for conducting electricity, and the insulating layers 144 can insulate the flat conductors 142 to prevent short circuits in the circuit. The plurality of flat conductors 142 are arranged at intervals, and each insulating layer 144 coats one flat conductor 142, thereby achieving insulation between the plurality of flat conductors 142.

[0050] Among them, the plurality of flat conductors 142 include positive conductors and negative conductors.

[0051] In some embodiments, optionally, the plurality of flat conductors 142 are arranged at intervals along the width direction of the flat conductors 142, and the interval distance between the plurality of flat conductors 142 is greater than or equal to 10 mm.

[0052] In this embodiment, the plurality of flat conductors 142 are arranged at intervals along the width direction of the flat conductors 142, so that the overall flat conductive connector 14 formed is also flat, which is conducive to bending and fixing of the flat conductive connector 14. The interval distance between the plurality of flat conductors 142 is greater than or equal to 10 mm, which is conducive to insulation between the plurality of flat conductors 142 and the setting of the insulating layers 144. Among them, after the insulating layers 144 are set, the gaps between the plurality of flat conductors 142 can also be filled with a glue film layer 18 to fix the plurality of flat conductors 142 and prevent the plurality of flat conductors 142 from moving.

[0053] In some embodiments, optionally, the solar panel 1 further includes: a glue film layer 18, which is arranged on the power generation unit 12 and is used for bonding the protective layer 16 to fix the flat conductive connector 14; and a glue-retaining groove 162, which is arranged on the outer surface of the protective layer 16 and is used for cooperating with the glue film layer 18 for bonding.

[0054] In this embodiment, the solar panel 1 further includes an adhesive film layer 18 and an adhesive-retaining groove 162. The adhesive film layer 18 is disposed on the power generation unit 12 and can bond the protective layer 16, thereby fixing the flat conductive connector 14. The adhesive-retaining groove 162 is disposed on the outer surface of the protective layer 16 and can cooperate with the adhesive film layer 18 for bonding. By providing the adhesive-retaining groove 162, the contact area between the protective layer 16 and the adhesive film layer 18 can be increased, so that the flat conductive connector 14 can be fixed more stably.

[0055] In some embodiments, optionally, the adhesive-retaining groove 162 includes at least one of the following or a combination thereof: a corrugated adhesive-retaining groove, a concave-convex adhesive-retaining groove, a honeycomb adhesive-retaining groove, and a mesh adhesive-retaining groove.

[0056] In this embodiment, the adhesive-retaining groove 162 includes at least one of the following or a combination thereof: a corrugated adhesive-retaining groove, a concave-convex adhesive-retaining groove, a honeycomb adhesive-retaining groove, and a mesh adhesive-retaining groove. Specifically, different adhesive-retaining grooves 162 can be set according to actual conditions to meet different working conditions.

[0057] In some embodiments, optionally, the insulating layer 144 includes a polyimide tape; and / or the protective layer 16 is bonded to the surface of the insulating layer 144.

[0058] In this embodiment, the insulating layer 144 includes a polyimide tape, and the polyimide tape has high temperature resistance, good electrical insulation, flame retardancy, and radiation resistance. And / or the protective layer 16 is bonded to the surface of the insulating layer 144. Specifically, soft polyvinyl chloride layers, polyester layers, fluoroplastic layers and other polymer materials can be used for bonding. These polymer materials can prevent the insulating layer 144 from being scratched or aged, and at the same time have a flame retardant effect, which can ensure the electrical performance of the flat conductive connector 14.

[0059] In some embodiments, optionally, the flat conductive connector 14 includes a braided copper tape 1422, and the braided copper tape 1422 includes a plurality of tinned copper wires 1424.

[0060] In this embodiment, the flat conductive connector 14 includes a braided copper tape 1422, and the braided copper tape 1422 includes a plurality of tinned copper wires 1424. The braided copper tape 1422 can maintain good flexibility and can ensure that it is not broken under long-term bending. A plurality of tinned copper wires 1424 can be made into a braided copper tape 1422 to ensure the conductivity.

[0061] In some embodiments, optionally, the diameter of the tinned copper wire 1424 is greater than or equal to 0.02 mm and less than or equal to 0.1 mm.

[0062] In this embodiment, the diameter of the tinned copper wire 1424 is limited between 0.02 mm and 0.1 mm, which is beneficial to the production of the braided copper tape 1422, ensures the flexibility of the braided copper tape 1422, and can also guarantee the conductivity.

[0063] In some embodiments, optionally, the diameter of the tinned copper wire 1424 is greater than or equal to 0.05 mm and less than or equal to 0.08 mm.

[0064] In some embodiments, optionally, the total thickness of the flat conductive connector 14, the insulating layer 144, and the protective layer 16 is greater than or equal to 1 mm and less than or equal to 3 mm.

[0065] In this embodiment, limiting the total thickness of the flat conductive connector 14, the insulating layer 144, and the protective layer 16 between 1 mm and 3 mm is beneficial for bending the flat conductive connector 14.

[0066] In some embodiments, optionally, the total thickness of the flat conductive connector 14, the insulating layer 144, and the protective layer 16 is greater than or equal to 1.5 mm and less than or equal to 2.5 mm.

[0067] In some embodiments, optionally, the thickness of the flat conductive connector 14 is greater than or equal to 0.1 mm and less than or equal to 0.5 mm.

[0068] In this embodiment, limiting the thickness of the flat conductive connector 14 between 0.1 mm and 0.5 mm is beneficial for bending the flat conductive connector 14.

[0069] In some embodiments, optionally, the thickness of the flat conductive connector 14 is greater than or equal to 0.2 mm and less than or equal to 0.4 mm.

[0070] In some embodiments, optionally, the width of the flat conductive connector 14 is greater than or equal to 2 mm and less than or equal to 10 mm.

[0071] In this embodiment, the width of the flat conductive connector 14 is greater than or equal to 2 mm and less than or equal to 10 mm, which is beneficial for fixing the flat conductive connector 14.

[0072] In some embodiments, optionally, the width of the flat conductive connector 14 is greater than or equal to 3 mm and less than or equal to 6 mm.

[0073] In some embodiments, optionally, the thickness of the insulating layer 144 is greater than or equal to 0.01 mm and less than or equal to 0.1 mm.

[0074] In this embodiment, the thickness of the insulating layer 144 is greater than or equal to 0.01 mm and less than or equal to 0.1 mm, which can not only effectively achieve insulation and prevent short circuits, but also prevent the flat conductive connector 14 from being too thick and affecting the bending performance.

[0075] In some embodiments, optionally, the thickness of the insulating layer 144 is greater than or equal to 0.03 mm and less than or equal to 0.08 mm.

[0076] According to an embodiment of the first aspect of the present invention, a solar panel 1 is provided, which includes a plurality of power generation units 12, a flat conductive connector 14, an insulating layer 144, and a protective layer 16. Among them, the flat conductive connector 14 can be a flat cable, and the flat cable includes two or more flat cable units connected side by side. The insulating sleeves (insulating layer 144) of two adjacent flat cable units are adhesively connected or integrally connected, and the flat cable units are all in a flat strip shape.

[0077] In some embodiments, optionally, a single flat cable includes a conductor (flat conductor 142), an insulating layer 144, and a sheath layer (protective layer 16).

[0078] In some embodiments, optionally, the conductor is a braided copper tape 1422.

[0079] In some embodiments, optionally, the insulating layer 144 is a thin polyimide tape, which is used to wrap the braided copper tape 1422 to prevent the glue of the sheath layer from penetrating onto the braided copper tape 1422.

[0080] In some embodiments, optionally, the braided copper tape 1422 includes a plurality of copper wires. Each single copper wire is made of tinned copper, with a diameter between 0.02 mm and 0.1 mm. A plurality of single wires are made into a bundle (generally 5 to 20 wires), and a plurality of bundles are wound and braided to form the braided copper tape 1422.

[0081] In some embodiments, optionally, the flat cable is a DC wire, with an overall flat shape, a smooth surface, and is adhesively fixed with solid 3M glue or the like.

[0082] In some embodiments, optionally, the flat cable includes two symmetrical wires (flat cable units), two layers of insulating layer 144, and an outermost sheath layer (protective layer 16), and the overall thickness is between 1 mm and 3 mm.

[0083] In some embodiments, optionally, the thickness of the braided copper tape 1422 is between 0.1 mm and 0.5 mm, and the width is generally between 2 mm and 10 mm. The base material of the insulating layer 144 is a polyimide tape, with single-sided adhesive, and the overall thickness is between 0.01 mm and 0.1 mm. The width can wrap the braided copper tape 1422, and the inner side of the adhesive surface is in contact with the braided copper tape 1422.

[0084] During the production of the flat cable, first, the adhesive surface of the insulating layer 144 is bonded to the wires of the braided copper tape 1422. After completely wrapping it, the sheath adhesive layer is then covered on the outer surfaces of the two insulating tape layers by an extrusion molding method. The adhesive layer generally uses high molecular materials such as soft polyvinyl chloride, polyester, and fluoroplastics. Its function is to prevent the insulating layer 144 from being scratched or aged, and at the same time has a flame retardant effect to ensure the electrical performance of the wires. The distance between the two wires is more than 10 mm, and the space in the middle is filled with adhesive to prevent the two copper wire core wires from short-circuiting or short-circuiting after thermal expansion during energization.

[0085] In some embodiments, optionally, the overall shape of the flat cable is flat.

[0086] In some embodiments, optionally, the long side of the flat cable has a concave-convex shape on one side or both sides, so as to be suitable for installation and fixation with liquid adhesives (such as AB glue, 502 glue, three-component glue, etc.). Among them, the groove part is the glue-retaining groove 162, which is convenient for providing a larger contact area between the glue and the structural parts.

[0087] The beneficial effects of this application are as follows:

[0088] 1. In the installation scenarios of vehicles and ships, the flat cable requires less installation space, does not need to be drilled separately, and is suitable for wiring in the gaps such as car windows and rear covers.

[0089] 2. There is a larger contact area between the flat wire and the installation part, which is convenient for fixed installation with adhesive.

[0090] 3. The flat cable is easier to hide, has a smaller height and a smaller wind resistance.

[0091] 4. After the braided copper tape wires are wrapped with insulating thin tapes, the braided copper tape can still maintain good flexibility and can ensure that it will not break under long-term bending.

[0092] In the present utility model, the term "a plurality of" refers to two or more, unless otherwise clearly defined. Terms such as "installation", "connection", "connection", "fixation", etc. should be understood in a broad sense. For example, "connection" can be a fixed connection, a detachable connection, or an integral connection; "connection" can be a direct connection or an indirect connection through an intermediate medium. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances.

[0093] In the description of this specification, the descriptions of the terms "one embodiment", "some embodiments", "specific embodiments", etc. mean that the specific features, structures, materials, or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present utility model. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials, or characteristics described can be combined in a suitable manner in any one or more embodiments or examples.

[0094] The foregoing is only the preferred embodiment of the present utility model and is not intended to limit the present utility model. For those skilled in the art, the present utility model can have various modifications and changes. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present utility model shall be included within the protection scope of the present utility model.

Claims

1. A solar panel, characterized in that: include: Power generation unit; A flat conductive connector electrically connected to the power generation unit, wherein the thickness of the flat conductive connector is smaller than the width of the flat conductive connector; An insulating layer, covering the surface of the flat conductive connector; The protective layer covers the surface of the insulating layer and is used to prevent foreign substances from entering the interior of the flat conductive connector.

2. The solar panel according to claim 1, characterized in that: The flat conductive connector comprises: A plurality of flat conductors, wherein the plurality of flat conductors are arranged at intervals; There are a plurality of insulating layers, and each insulating layer covers one of the flat conductors.

3. The solar panel according to claim 2, characterized in that: The plurality of flat conductors are spaced apart along a width direction of the flat conductor, and a spacing distance between the plurality of flat conductors is greater than or equal to 10 mm.

4. The solar panel according to claim 1, characterized in that: Also includes: An adhesive film layer, disposed on the power generation unit, for bonding the protective layer to fix the flat conductive connector; The adhesive groove is arranged on the outer surface of the protective layer and is used for bonding with the adhesive film layer.

5. The solar panel according to claim 4, characterized in that: The glue retaining groove includes at least one of the following or a combination thereof: a corrugated glue retaining groove, a concave-convex glue retaining groove, a honeycomb glue retaining groove and a mesh glue retaining groove.

6. The solar panel according to claim 1, characterized in that: The insulating layer comprises a polyimide tape; and / or The protective layer is bonded to the surface of the insulating layer.

7. The solar panel according to claim 1, characterized in that: The flat conductive connector includes a braided copper tape including a plurality of tinned copper wires.

8. The solar panel according to claim 7, characterized in that: The diameter of the tinned copper wire is greater than or equal to 0.02 mm and less than or equal to 0.1 mm.

9. The solar panel according to any one of claims 1 to 8, characterized in that: The total thickness of the flat conductive connector, the insulating layer and the protective layer is greater than or equal to 1 mm and less than or equal to 3 mm.

10. The solar panel according to any one of claims 1 to 8, characterized in that: The thickness of the flat conductive connector is greater than or equal to 0.1 mm and less than or equal to 0.5 mm; and / or The width of the flat conductive connector is greater than or equal to 2 mm and less than or equal to 10 mm; and / or The thickness of the insulating layer is greater than or equal to 0.01 mm and less than or equal to 0.1 mm.

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