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CN-224218359-U - Photovoltaic module and junction box structure

CN224218359UCN 224218359 UCN224218359 UCN 224218359UCN-224218359-U

Abstract

The utility model discloses a photovoltaic module and a junction box structure. The photovoltaic module comprises a module body, a junction box structure and a cementation layer, wherein the junction box structure is fixed on the back surface of the module body, the junction box structure comprises a junction box body and a sealing element, the sealing element is arranged around an outgoing line connection area of the junction box body, the lower side of the sealing element is in sealing fit with the bottom surface of the junction box body, the upper side of the sealing element is in sealing connection with the back surface of the module body, and the cementation layer is arranged on the outer side of the sealing element, is positioned between the back surface of the module body and the back surface of the junction box structure and is fixedly connected with the sealing element, the back surface of the module body and the junction box structure. This structure can reduce the risk of vapor intrusion into the assembly body.

Inventors

  • CHENG MENG
  • YE YUQIU
  • WANG YE

Assignees

  • 晶澳(扬州)新能源有限公司

Dates

Publication Date
20260508
Application Date
20250603

Claims (10)

  1. 1. A photovoltaic module is characterized by comprising a module main body (10), a junction box structure (20) fixed on the back surface of the module main body (10) and a cementing layer (30), The junction box structure (20) comprises a junction box main body (21) and a sealing member (22), The sealing member (22) is arranged around the lead wire connection area (212) of the junction box main body (21), and the lower side of the sealing member (22) is in sealing fit with the bottom surface of the junction box main body (21); The upper side of the sealing piece (22) is connected with the back surface of the assembly main body (10) in a sealing way; The cementing layer (30) is arranged outside the sealing piece (22), is positioned between the back of the assembly main body (10) and the back of the junction box structure (20), and is fixedly connected with the sealing piece (22), the back of the assembly main body (10) and the junction box structure (20).
  2. 2. The photovoltaic module of claim 1, wherein the photovoltaic module comprises, The seal (22) is a water-blocking partition.
  3. 3. The photovoltaic module according to claim 1 or 2, characterized in that, The bottom surface of the junction box main body (21) comprises a first jogged groove (211) which is arranged around the lead wire connecting area (212); The lower side of the sealing member (22) is in sealing fit with the first fitting groove (211).
  4. 4. The photovoltaic module according to claim 3, The first fitting groove (211) has a through groove structure penetrating around the peripheral side of the lead-out wire connection region (212); Or alternatively The first fitting groove (211) is a groove arranged around the peripheral side of the lead wire connection region (212).
  5. 5. The photovoltaic module of claim 4, wherein the photovoltaic module comprises, For the case that the first embedded groove (211) is a through groove structure with a through circumference side, a first bulge structure which is matched with the through groove structure and is through circumference side is arranged at the lower side of the sealing piece (22), and the width of the first bulge structure is smaller than or equal to the width of the sealing piece (22) main body; Or alternatively In the case that the first fitting groove (211) is a groove arranged on the periphery, a second protrusion structure which is matched with the groove arranged on the periphery and is arranged on the periphery is arranged on the lower side of the sealing piece (22).
  6. 6. The photovoltaic module according to claim 1 or 2, characterized in that the module body (10) back comprises: a second fitting groove (12) which is matched with the upper side of the sealing piece (22); The upper side of the sealing piece (22) is embedded in the second embedded groove (12) and is in sealing connection with the second embedded groove (12).
  7. 7. The photovoltaic module of claim 6, wherein the photovoltaic module comprises, The upper side of the sealing element (22) comprises a third bulge structure matched with the second jogged groove (12); and/or the number of the groups of groups, The thickness of the cementing layer (30) is not less than the thickness of the seal (22) before the cementing layer (30) is sealingly connected to the back of the assembly body (10).
  8. 8. The photovoltaic module of claim 2, wherein the photovoltaic module comprises, The water-blocking partition board is of a multidirectional deformation structure.
  9. 9. The photovoltaic module of claim 8, wherein the photovoltaic module comprises, The inner side of the water-blocking partition plate is abutted against the side surface of the overflowing glue (50) on the back surface of the assembly main body (10), and the deformation shape of the inner side of the water-blocking partition plate is matched with the shape of the side surface of the overflowing glue (50) on the back surface of the assembly main body (10); and/or the number of the groups of groups, The outside of the water-blocking partition board is in a concave-convex shape (221).
  10. 10. Junction box structure applied to photovoltaic modules, characterized in that the junction box structure (20) comprises a junction box body (21) and a sealing member (22), The sealing member (22) is arranged around the lead wire connection area (212) of the junction box main body (21), and the lower side of the sealing member (22) is in sealing fit with the bottom surface of the junction box main body (21); The upper side of the sealing piece (22) is connected with the back surface of the assembly main body (10) of the photovoltaic assembly in a sealing way.

Description

Photovoltaic module and junction box structure Technical Field The utility model relates to a photovoltaic module and a junction box structure. Background In the prior art, the junction box in the photovoltaic module is generally adhered to the back surface of the module body by an adhesive. On one hand, the adhesive is greatly different from the material of the back plate of the component main body and the material of the junction box, after the adhesive is solidified, interfaces exist between the adhesive and the back plate of the component main body and between the adhesive and the surface of the junction box, along with the increase of the service time of the photovoltaic component, the moisture invasion condition can occur at the interfaces, the moisture invasion can accelerate the aging of the adhesive, the cohesive force of the adhesive can be reduced, the risk of the moisture invasion into the component main body is further increased, on the other hand, the adhesive cannot be well matched with the overflowing adhesive around the leading-out hole of the bus-strap on the component main body (for example, gaps exist between the adhesive and the overflowing adhesive, the thickness of the adhesive is smaller than the thickness of the overflowing adhesive, and the like), a local permeation channel can be formed, the moisture blocking performance is further reduced, and the risk of the moisture invasion into the component main body is increased. Disclosure of utility model In view of this, the utility model provides a photovoltaic module and a junction box structure, and compared with the existing structure that the junction box main body is fixed on the module main body only through adhesive, the junction box structure of the photovoltaic module provided by the utility model is additionally provided with a sealing element, the sealing element is matched with the junction box main body and the module main body, a new waterproof structure is additionally arranged for the module main body, and the risk of water vapor invading into the module main body is reduced. In order to solve the technical problems, the utility model provides the following technical scheme: in a first aspect, embodiments of the present utility model provide a photovoltaic module, including a module body, a junction box structure fixed to a back surface of the module body, and a bonding layer, The junction box structure includes a junction box body and a seal, The sealing piece is arranged around the outgoing line connection area of the junction box main body, and the lower side of the sealing piece is in sealing fit with the bottom surface of the junction box main body; the upper side of the sealing element is in sealing connection with the back surface of the assembly main body; The cementation layer is arranged on the outer side of the sealing piece, is positioned between the back of the assembly main body and the back of the junction box structure, and is fixedly connected with the sealing piece, the back of the assembly main body and the junction box structure. In a second aspect, embodiments of the present utility model provide a junction box structure for use in a photovoltaic module, the junction box structure comprising a junction box body and a seal, The sealing piece is arranged around the outgoing line connection area of the junction box main body, and the lower side of the sealing piece is in sealing fit with the bottom surface of the junction box main body; and the upper side of the sealing piece is in sealing connection with the back of the assembly main body of the photovoltaic assembly. The technical scheme of the utility model has the following advantages or beneficial effects: According to the photovoltaic module provided by the embodiment of the utility model, the sealing element included in the junction box structure is arranged around the outgoing line connection area of the junction box main body, and the lower side of the sealing element is in sealing fit with the bottom surface of the junction box main body, namely, the sealing of the outgoing line connection area is realized through the sealing element, and the upper side of the sealing element is in sealing connection with the back surface of the module main body, so that the sealing of the bus bar outgoing hole is realized. The sealing piece is matched with the cementing layer by fixing the assembly main body and the junction box structure through the cementing layer arranged on the outer side of the sealing piece, so that the risk that water vapor invades into the outgoing line connection area of the junction box main body and the confluence belt outlet hole of the assembly main body is obviously reduced, and the moisture resistance and long-term reliability of the photovoltaic assembly are improved. Drawings FIG. 1 is a schematic cross-sectional view of a junction box body and module body of a prior art photovoltaic module; FIG. 2 is a schematic cross-sectio