Photovoltaic module

Abstract

The utility model discloses a photovoltaic assembly, which comprises a photovoltaic lamination piece and a heat conduction piece, the photovoltaic lamination piece comprises a photovoltaic cell and a back plate, and the heat conduction piece is arranged on one side of the back plate far away from the photovoltaic cell. Therefore, one side of the photovoltaic laminated part is provided with the heat conduction part, and the heat conduction part can improve the heat dissipation performance of the photovoltaic module, facilitates the reduction of the temperature of the photovoltaic laminated part, enables the temperature of the photovoltaic laminated part to be maintained in a reasonable range, guarantees the working efficiency of the photovoltaic module, and improves the power generation amount of the photovoltaic module. In addition, the heat conduction piece can also play a certain role in protecting the photovoltaic laminated piece, so that photovoltaic cells in the photovoltaic laminated piece are not affected by the external environment, certain waterproof and moistureproof effects are achieved, and the service life of the photovoltaic assembly is effectively prolonged.

Description

Technical Field

[0001] The utility model relates to the field of photovoltaic components, in particular to a photovoltaic component. Background Art

[0002] In the prior art, part of the solar energy received by the photovoltaic module is converted into electrical energy, and the other part is absorbed by the system. The heat obtained by the system causes the working temperature of the photovoltaic module to increase, resulting in a decrease in the working efficiency and power generation of the photovoltaic module, which has a negative impact on the life of the photovoltaic module. Utility Model Content

[0003] The utility model aims to solve at least one of the technical problems existing in the prior art. To this end, one purpose of the utility model is to provide a photovoltaic module that can improve the heat dissipation efficiency of the photovoltaic module and extend the service life of the photovoltaic module.

[0004] The photovoltaic assembly according to the first embodiment of the utility model comprises: a photovoltaic laminate and a heat conductive member, wherein the photovoltaic laminate comprises a photovoltaic cell sheet and a back plate, and the heat conductive member is arranged on a side of the back plate away from the photovoltaic cell sheet.

[0005] According to the photovoltaic module of the embodiment of the utility model, a heat conductive member is arranged on one side of the photovoltaic laminate, and the heat conductive member can improve the heat dissipation performance of the photovoltaic module, help to reduce the temperature of the photovoltaic laminate, and keep the temperature of the photovoltaic laminate within a reasonable range, so as to ensure the working efficiency of the photovoltaic module and improve the power generation of the photovoltaic module. The heat conductive member can also play a certain protective role on the photovoltaic laminate, so that the photovoltaic cells in the photovoltaic laminate are not affected by the external environment, and also has a certain water-proof and moisture-proof effect, effectively extending the service life of the photovoltaic module.

[0006] In some embodiments, the heat conductive member is an aluminum foil material.

[0007] In some embodiments, it further includes: a frame, the frame is arranged around the outer peripheral side of the photovoltaic laminate, the frame is formed with a mounting groove, the mounting groove extends along the circumference of the photovoltaic laminate, and the photovoltaic laminate is fitted in the mounting groove.

[0008] In some embodiments, the heat conductive member is spaced apart from the frame.

[0009] In some embodiments, the distance between the outer periphery of the heat conducting member and the inner periphery of the frame is L, and L satisfies: 12 mm ≤ L ≤ 40 mm.

[0010] In some embodiments, the invention further includes: a connecting member, which is disposed around the outer periphery of the heat conducting member and connects the heat conducting member and the back plate.

[0011] In some embodiments, the connecting member is made of a heat-conducting and water-resistant material.

[0012] In some embodiments, at least a portion of the connecting member is located between the frame and the heat conducting member.

[0013] In some embodiments, a junction box is provided on a side of the back plate away from the photovoltaic cell sheet, and an avoidance hole is formed on the heat conductive member, and the avoidance hole cooperates with the junction box.

[0014] In some embodiments, the thickness of the heat conductive element is H, and H satisfies: 4um≤H≤180um.

[0015] Additional aspects and advantages of the present invention will be given in part in the following description, and in part will become apparent from the following description, or will be learned through the practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] The above and / or additional aspects and advantages of the present invention will become apparent and easily understood from the description of the embodiments in conjunction with the following drawings, in which:

[0017] Figure 1 It is a schematic diagram of a photovoltaic assembly according to an embodiment of the utility model.

[0018] Figure 2 It is a schematic diagram of a photovoltaic assembly according to another viewing angle of an embodiment of the utility model.

[0019] Figure 3 It is a schematic diagram of a frame according to an embodiment of the utility model.

[0020] Figure 4 It is a schematic diagram of a connecting piece according to an embodiment of the utility model.

[0021] Reference numerals:

[0022] 100. Photovoltaic modules;

[0023] 10. Photovoltaic laminate; 11. Photovoltaic cell; 12. Back sheet; 13. Frame;

[0024] 20. Heat conducting part; 21. Avoidance hole; 22. Connecting part;

[0025] A. Thickness direction; B. Radial direction. DETAILED DESCRIPTION

[0026] The embodiments of the present invention are described in detail below. The embodiments described with reference to the accompanying drawings are exemplary. Figure 1-Figure 4The photovoltaic module 100 according to the embodiment of the present invention is described, comprising: a photovoltaic laminate 10 and a thermal conductor 20. The photovoltaic module 100 has a thickness direction A and a radial direction B.

[0027] Specifically, if Figure 1-Figure 4 As shown, the photovoltaic laminate 10 includes a photovoltaic cell sheet 11 and a back sheet 12 , and the heat conductive member 20 is disposed on a side of the back sheet 12 away from the photovoltaic cell sheet 11 .

[0028] Combination Figure 1 and Figure 2 , that is, the back plate 12 is arranged on one side of the photovoltaic cell 11 along the thickness direction A of the photovoltaic module 100, and the heat conductive member 20 is connected to the side of the back plate 12 away from the photovoltaic cell 11 along the thickness direction A of the photovoltaic module 100. The photovoltaic cell 11 is suitable for absorbing solar energy and converting part of the received solar energy into electrical energy and the other part into thermal energy. The thermal energy will cause the temperature of the photovoltaic module 100 to rise. The heat conductive member 20 is arranged to dissipate heat for the photovoltaic cell 11, accelerate the heat generated during the operation of the photovoltaic cell 11 to be transferred to other objects, so as to reduce the temperature of the photovoltaic module 100.

[0029] According to the photovoltaic module 100 of the embodiment of the utility model, a heat conductive member 20 is arranged on one side of the photovoltaic laminate 10, and the heat conductive member 20 can improve the heat dissipation performance of the photovoltaic module 100, help reduce the temperature of the photovoltaic laminate 10, and keep the temperature of the photovoltaic laminate 10 within a reasonable range, so as to ensure the working efficiency of the photovoltaic module 100 and improve the power generation of the photovoltaic module 100. The heat conductive member 20 can also play a certain protective role on the photovoltaic laminate 10, so that the photovoltaic cell 11 in the photovoltaic laminate 10 is not affected by the external environment, and also has a certain water-proof and moisture-proof effect, effectively extending the service life of the photovoltaic module 100.

[0030] According to some embodiments of the present invention, the heat conducting member 20 is made of aluminum foil.

[0031] Aluminum foil material is an excellent thermal conductive material. The thermal conductivity of aluminum foil material is very good, and the thermal conductivity coefficient is about 235W / (m·K), which is nearly four times higher than the thermal conductivity coefficient of steel. Aluminum foil material can quickly transfer the heat generated during the operation of photovoltaic cells 11 to other objects, and has excellent heat dissipation capacity.

[0032] Therefore, the heat conducting member 20 is made of aluminum foil material to enhance heat conduction and accelerate the heat dissipation from the inside of the photovoltaic module 100 to the outside, so as to reduce the temperature of the photovoltaic module 100 and improve the working efficiency of the photovoltaic module 100. Under the premise of not affecting the reliability performance of the photovoltaic module 100, the heat dissipation problem of the photovoltaic module 100 is improved.

[0033] According to some embodiments of the present invention, Figure 1 and Figure 3 As shown, the photovoltaic assembly 100 further includes: a frame 13, which is arranged around the outer periphery of the photovoltaic laminate 10, and the frame 13 is formed with a mounting groove, which extends along the circumference of the photovoltaic laminate 10, and the photovoltaic laminate 10 is fitted in the mounting groove.

[0034] The mounting groove is formed by a portion of the side surface of the frame 13 along the radial direction B of the photovoltaic module 100 being recessed in a direction away from the center of the photovoltaic module 100 , and the peripheral edge of the photovoltaic laminate 10 is embedded in the mounting groove.

[0035] Therefore, the frame 13 arranged around the outer peripheral side of the photovoltaic laminate 10 can protect the edge of the photovoltaic laminate 10 and prevent the edge of the photovoltaic laminate 10 from being damaged by collision. It can also play a role in waterproofing and moisture-proofing, thereby ensuring the structural stability of the photovoltaic component 100 and improving the durability of the photovoltaic component 100.

[0036] According to some embodiments of the present invention, Figure 1 As shown, the heat conductive member 20 is spaced apart from the frame 13. That is, along the radial direction B of the photovoltaic module 100, there is a certain distance between the outer periphery of the heat conductive member 20 and the inner periphery of the frame 13. Therefore, the spaced arrangement of the heat conductive member 20 and the frame 13 can avoid the conduction phenomenon between the frame 13 and the heat conductive member 20, avoid the risk of leakage, and improve the safety of the photovoltaic module 100.

[0037] According to some embodiments of the present invention, Figure 1 As shown, the distance between the outer periphery of the heat conductive member 20 and the inner periphery of the frame 13 is L, and L satisfies: 12mm≤L≤40mm. If the distance between the outer periphery of the heat conductive member 20 and the inner periphery of the frame 13 is less than 12mm, the distance between the outer periphery of the heat conductive member 20 and the inner periphery of the frame 13 is too small, which easily leads to the conduction phenomenon between the frame 13 and the heat conductive member 20. If the distance between the outer periphery of the heat conductive member 20 and the frame 13 is greater than 40mm, the distance between the outer periphery of the heat conductive member 20 and the inner periphery of the frame 13 is too large, which will make the coverage area of ​​the heat conductive member 20 on the photovoltaic laminate 10 too small, affecting the heat dissipation effect of the heat conductive member 20 on the photovoltaic laminate 10. For example, L=20mm. Therefore, limiting the distance between the outer periphery of the heat conductor 20 and the inner periphery of the frame 13 can avoid the risk of leakage of the photovoltaic component 100, while ensuring the heat dissipation effect of the heat conductor 20 on the photovoltaic laminate 10, thereby improving the reliability and stability of the photovoltaic component 100.

[0038] According to some embodiments of the present invention, Figure 1 and Figure 4As shown, the photovoltaic module 100 further includes: a connector 22, which is arranged around the outer periphery of the heat conductive member 20, and the connector 22 connects the heat conductive member 20 and the back plate 12. The connector 22 is suitable for fixedly connecting the heat conductive member 20 and the back plate 12. Therefore, the connector 22 is arranged around the outer periphery of the heat conductive member 20 to facilitate improving the connection strength between the heat conductive member 20 and the back plate 12, so that the heat conductive member 20 is connected to the back plate 12 to improve the overall structural strength of the photovoltaic module 100. The connector 22 is wrapped around the edge of the heat conductive member 20, and can also play a certain waterproof role, thereby extending the service life of the photovoltaic module 100.

[0039] According to some embodiments of the utility model, the connector 22 is a heat-conducting and water-resistant material. The heat-conducting and water-resistant material has a good waterproof sealing effect, excellent electrical performance and insulation performance, and the heat-conducting and water-resistant material will solidify, has bonding performance, high bonding strength, and is an elastic body after solidification, and has the effect of impact resistance and vibration resistance, and the solidified material has good thermal conductivity and heat dissipation performance. Therefore, the connector 22 is a heat-conducting and water-resistant material, which can ensure the heat dissipation performance of the photovoltaic module 100, and can also play a role in water-blocking and moisture-proofing, as well as protecting the photovoltaic laminate 10, and play a buffering role when the photovoltaic module 100 is hit, thereby improving the overall structural strength and durability of the photovoltaic module 100.

[0040] According to some embodiments of the present invention, Figure 1 As shown, at least part of the connector 22 is located between the frame 13 and the heat conductor 20. There is a certain gap between the outer periphery of the heat conductor 20 and the inner periphery of the frame 13, and at least part of the connector 22 is located between the frame 13 and the heat conductor 20, so that the connector 22 covers the gap between the heat conductor 20 and the frame 13. Therefore, at least part of the connector 22 is located between the frame 13 and the heat conductor 20, which can increase the coverage area of ​​the surface of the photovoltaic laminate 10, enhance the protection of the photovoltaic laminate 10, ensure the waterproofness and heat dissipation of the photovoltaic module 100, and at the same time ensure the connection strength between the heat conductor 20 and the photovoltaic laminate 10, so as to extend the service life of the photovoltaic module 100.

[0041] According to some embodiments of the present invention, Figure 1As shown, a junction box is provided on the side of the back plate 12 away from the photovoltaic cell sheet 11, and a avoidance hole 21 is formed on the heat conductive member 20, and the avoidance hole 21 cooperates with the junction box. A junction box is provided on the side of the back plate 12 away from the photovoltaic cell edge along the thickness direction A of the photovoltaic module 100, and the avoidance hole 21 penetrates the heat conductive member 20 along the thickness direction A of the photovoltaic module 100. The shape of the avoidance hole 21 is suitable for matching with the junction box to facilitate the connection between the heat conductive member 20 and the back plate 12. Therefore, the avoidance hole 21 is formed on the heat conductive member 20 to facilitate the assembly between the heat conductive member 20 and the photovoltaic laminate 10, which can reduce the overall assembly difficulty of the photovoltaic module 100, simplify the structure of the photovoltaic module 100, and ensure the normal operation of the photovoltaic module 100 while improving the reliability of the photovoltaic module 100.

[0042] According to some embodiments of the present invention, Figure 2 As shown, the thickness of the heat conductor 20 is H, and H satisfies: 4um≤H≤180um. If the thickness of the heat conductor 20 is less than 4um, the thickness of the heat conductor 20 is relatively thin, which will result in poor heat dissipation effect of the heat conductor 20 on the photovoltaic body. If the thickness of the heat conductor 20 is greater than 180um, the thickness of the heat conductor 20 is relatively thick, which will result in higher production costs and cause certain waste. For example, H=160mm. Therefore, by limiting the thickness of the heat conductor 20, the production cost of the photovoltaic module 100 can be reduced while ensuring the heat dissipation effect of the heat conductor 20 on the photovoltaic module 100, thereby achieving cost reduction and efficiency improvement.

[0043] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0044] In the description of the present utility model, "first feature" and "second feature" may include one or more of the features. In the description of the present utility model, "plurality" means two or more. In the description of the present utility model, the first feature "above" or "below" the second feature may include the first and second features being in direct contact, or the first and second features being in contact not directly but through another feature between them. In the description of the present utility model, the first feature "above", "above" and "above" the second feature include the first feature being directly above and obliquely above the second feature, or simply means that the first feature is higher in level than the second feature.

[0045] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "illustrative embodiments", "examples", "specific examples", or "some examples" means that the specific features, structures, materials, or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the utility model. In this specification, the schematic expressions of the above terms do not necessarily refer to the same embodiment or example.

[0046] Although the embodiments of the present invention have been shown and described, those skilled in the art will appreciate that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the claims and their equivalents.

Claims

1. A photovoltaic module, characterized in that: include: A photovoltaic laminate, the photovoltaic laminate comprising a photovoltaic cell sheet and a back sheet; A heat conducting member, the heat conducting member being arranged on a side of the back plate away from the photovoltaic cell sheet; A frame, the frame being arranged around the outer periphery of the photovoltaic laminate; A connecting member, the connecting member is arranged around the outer periphery of the heat conducting member, the connecting member connects the heat conducting member and the back plate, and at least a part of the connecting member is located between the frame and the heat conducting member.

2. The photovoltaic module according to claim 1, characterized in that: The heat conducting member is made of aluminum foil.

3. The photovoltaic module according to claim 1, characterized in that: The frame is formed with a mounting groove, the mounting groove extends along the circumference of the photovoltaic laminate, and the photovoltaic laminate is fitted in the mounting groove.

4. The photovoltaic module according to claim 3, characterized in that: The heat conducting member is spaced apart from the frame.

5. The photovoltaic module according to claim 4, characterized in that: The distance between the outer periphery of the heat conducting member and the inner periphery of the frame is L, and L satisfies: 12 mm ≤ L ≤ 40 mm.

6. The photovoltaic module according to claim 1, characterized in that: The connecting piece is made of heat-conducting and water-resistant material.

7. The photovoltaic module according to claim 1, characterized in that: A junction box is provided on one side of the back plate away from the photovoltaic cell sheet. The heat conducting member is formed with an avoidance hole, and the avoidance hole cooperates with the junction box.

8. The photovoltaic module according to any one of claims 1 to 7, characterized in that: The thickness of the heat conducting member is H, and H satisfies: 4um≤H≤180um.

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