CN219419050U

CN219419050U - PCB light assembly

Info

Publication number: CN219419050U
Application number: CN202320683637.XU
Authority: CN
Inventors: 裴海霞; 蒋孝山; 陶浩亮
Original assignee: Changzhou Suntech Solar Power Co ltd
Current assignee: Changzhou Suntech Solar Power Co ltd
Priority date: 2023-03-31
Filing date: 2023-03-31
Publication date: 2023-07-25
Anticipated expiration: 2033-03-31

Abstract

The utility model relates to the technical field of manufacturing of photovoltaic modules, in particular to a light-weight module of a PCB (printed Circuit Board). A first EVA film laminated at the bottom end of a PCB bottom plate is arranged, a PET bottom layer is laminated at the bottom end of the first EVA film, a glass fiber cloth layer is laminated between a battery piece and the PCB bottom plate, a second EVA film is laminated at the top end of the battery piece, and a PET top layer is laminated at the top end of the second EVA film.

Description

PCB light assembly

Technical Field

The utility model relates to the technical field of manufacturing of photovoltaic modules, in particular to a PCB light module.

Background

At present, the conventional photovoltaic module is formed by combining glass, EVA (ethylene vinyl acetate) film, CELL, EVA film and glass from bottom to top, and a PCB structure is further formed by combining PCB (with electricity) +EVA, cell+EVA and PET from bottom to top, wherein the conventional glass module is limited by weight, compared with the conventional glass module, the PCB structure is lighter than the conventional glass module by about 2kg, the impact strength is limited, the water vapor resistance of the edge of the module is poor, and various performance indexes of the module are difficult to ensure in a water vapor environment, so that the conventional photovoltaic module still needs to be further developed and improved.

Disclosure of Invention

Therefore, the utility model aims to provide a PCB light assembly, which solves the problems that the traditional PCB structure photovoltaic assembly has limited impact strength and poor water vapor resistance at the edge of the assembly.

Based on the above object, the utility model provides a light assembly of a PCB, which comprises a PCB bottom plate, a battery piece and further comprises:

the first EVA film is laminated at the bottom end of the PCB bottom plate, the PET bottom layer is laminated at the bottom end of the first EVA film, and the battery piece is laminated above the PCB bottom plate;

the glass fiber cloth layer is laminated between the battery piece and the PCB bottom plate;

the second EVA film is laminated on the top end of the battery piece, and the PET top layer is laminated on the top end of the second EVA film;

the outer edge of the PET bottom layer exceeds the outer edge of the PCB bottom plate by 5 to 10mm, and the outer edge of the PET top layer exceeds the outer edge of the PCB bottom plate by 5 to 10mm.

Preferably, a third EVA film is laminated between the PCB base plate and the glass fiber cloth layer.

Preferably, a fourth EVA film is laminated between the fiberglass cloth layer and the battery sheet.

Preferably, the bottom end of the PET bottom layer is provided with a junction box.

Preferably, the outer side edges of the glass fiber cloth layer and the battery piece do not exceed the outer side edge of the PCB bottom plate.

Preferably, the PET bottom layer is laminated with an insulating tape beyond the top end of the PCB chassis edge portion and the PET top layer is laminated with an insulating tape beyond the bottom end of the PCB chassis edge portion.

Preferably, the four corners of the PET bottom layer exceeding the edge part of the PCB bottom plate are provided with lower through holes, the four corners of the PET top layer exceeding the edge part of the PCB bottom plate are correspondingly provided with upper through holes, and the upper through holes and the lower through holes are internally penetrated and provided with fixed studs.

The utility model has the beneficial effects that: through setting up the lamination in the first EVA membrane of PCB bottom plate bottom, first EVA membrane bottom lamination has the PET bottom, the battery piece lamination has the fine cloth layer of glass in PCB bottom plate top, laminate between battery piece and PCB bottom plate, the lamination of battery piece top has the second EVA membrane, the lamination of second EVA membrane top has the PET top layer, thereby through newly-increased one deck glass fine cloth layer between battery piece and PCB bottom plate, and add one deck PET more in PCB bottom plate below and encapsulate, effectively improve impact strength, simultaneously through upper and lower PET top layer, PET bottom cladding, wherein, the outside edge of PET bottom exceeds the outside edge of PCB bottom plate 5 to 10mm, the outside edge of PET top exceeds the outside edge of PCB bottom plate 5 to 10mm, thereby with the complete parcel of PCB bottom plate, effectively separation steam gets into, it is limited to solve traditional PCB structure photovoltaic module impact strength from this, the problem that the subassembly edge water vapor blocking ability is relatively poor.

Drawings

In order to more clearly illustrate the utility model or the technical solutions of the prior art, the drawings which are used in the description of the embodiments or the prior art will be briefly described, it being obvious that the drawings in the description below are only of the utility model and that other drawings can be obtained from them without inventive effort for a person skilled in the art.

FIG. 1 is a schematic diagram of the overall structure of the present utility model;

fig. 2 is a schematic structural diagram of another embodiment of the present utility model.

Marked in the figure as:

1. a PCB base plate; 2. a battery sheet; 3. a first EVA film; 4. a PET bottom layer; 41. a lower through hole; 5. a glass fiber cloth layer; 6. a second EVA film; 7. a PET top layer; 71. an upper through hole; 8. a third EVA film; 9. a fourth EVA film; 10. an insulating tape; 11. and fixing the stud.

Detailed Description

The present utility model will be further described in detail with reference to specific embodiments in order to make the objects, technical solutions and advantages of the present utility model more apparent.

It is to be noted that unless otherwise defined, technical or scientific terms used herein should be taken in a general sense as understood by one of ordinary skill in the art to which the present utility model belongs. The terms "first," "second," and the like, as used herein, do not denote any order, quantity, or importance, but rather are used to distinguish one element from another. The word "comprising" or "comprises", and the like, means that elements or items preceding the word are included in the element or item listed after the word and equivalents thereof, but does not exclude other elements or items. The terms "connected" or "connected," and the like, are not limited to physical or mechanical connections, but may include electrical connections, whether direct or indirect. "upper", "lower", "left", "right", etc. are used merely to indicate relative positional relationships, which may also be changed when the absolute position of the object to be described is changed.

As shown in fig. 1, a PCB board light assembly comprises a PCB board 1, a battery piece 2, and a first EVA film 3 laminated at the bottom end of the PCB board 1, wherein the bottom end of the first EVA film 3 is laminated with a PET bottom layer 4, the battery piece 2 is laminated above the PCB board 1, a glass fiber cloth layer 5 is laminated between the battery piece 2 and the PCB board 1, a second EVA film 6 is laminated at the top end of the battery piece 2, a PET top layer 7 is laminated at the top end of the second EVA film 6, the outer edge of the PET bottom layer 4 exceeds the outer edge 5 to 10mm of the PCB board 1, and the outer edge of the PET top layer 7 exceeds the outer edge 5 to 10mm of the PCB board 1.

The utility model is based on the existing structure of the PCB bottom plate 1 and the battery piece 2, the first EVA film 3 laminated at the bottom end of the PCB bottom plate 1 is arranged, the PET bottom layer 4 is laminated at the bottom end of the first EVA film 3, the battery piece 2 is laminated above the PCB bottom plate 1, the glass fiber cloth layer 5 is laminated between the battery piece 2 and the PCB bottom plate 1, the glass fiber cloth layer 5 is made of the existing glass fiber materials and can be designed into one or a plurality of layers to be overlapped, the second EVA film 6 is laminated at the top end of the battery piece 2, the PET top layer 7 is laminated at the top end of the second EVA film 6, thus the impact strength is effectively improved by newly adding one layer of the glass fiber cloth layer 5 between the battery piece 2 and the PCB bottom plate 1 and additionally adding one layer of PET under the PCB bottom plate 1 for encapsulation, simultaneously through upper and lower PET top layer 7, PET bottom layer 4 cladding, wherein, PET bottom layer 4's outside edge exceeds PCB bottom plate 1's outside edge 5 to 10mm, PET top layer 7's outside edge exceeds PCB bottom plate 1's outside edge 5 to 10mm, thereby with PCB bottom plate 1 complete package, effectively separation steam gets into, it is limited to solve traditional PCB structure photovoltaic module impact strength from this, the relatively poor problem of subassembly edge water blocking steam ability, and PCB structure has certain bending property for glass subassembly, under the condition that equipment surface is not completely smooth, can fine matching use, moreover can optimize the subassembly weight, improve the whole shock resistance of subassembly, the application scenario is more extensive.

In the embodiment of the utility model, the outer edges of the glass fiber cloth layer 5 and the battery piece 2 do not exceed the outer edge of the PCB bottom plate 1, the third EVA film 8 is laminated between the PCB bottom plate 1 and the glass fiber cloth layer 5, and the fourth EVA film 9 is laminated between the glass fiber cloth layer 5 and the battery piece 2, wherein the first EVA film 3, the second EVA film 6, the third EVA film 8 and the fourth EVA film 9 can be provided to be uniform in size and can also be uniform in size with the PET top layer 7 and the PET bottom layer 4, as shown in figure 1, because the EVA films have good adhesive force, so that moisture and dirt can be further blocked and the shock resistance vibration energy can be enhanced through the alternate lamination of multiple layers of EVA films.

As another embodiment of the present utility model, as shown in fig. 2, the first EVA film 3, the second EVA film 6, the third EVA film 8 and the fourth EVA film 9 have the same size and smaller than the sizes of the PET top layer 7 and the PET bottom layer 4, the top end of the edge portion of the PET bottom layer 4 beyond the PCB substrate 1 and the bottom end of the edge portion of the PET top layer 7 beyond the PCB substrate 1 are laminated with an insulating tape 10, and the insulating tape 10 is bonded and protected by using a multi-layer EVA film, and is further bonded and sealed by a circle of insulating tape 10 at the periphery.

In the embodiment of the utility model, the four corners of the PET bottom layer 4 exceeding the edge part of the PCB bottom plate 1 are provided with the lower through holes 41, the four corners of the PET top layer 7 exceeding the edge part of the PCB bottom plate 1 are correspondingly provided with the upper through holes 71, the fixing studs 11 are penetrated and arranged in the upper through holes 71 and the lower through holes 41, the fixing studs 11 are convenient to fix and use, and when the multi-chip module is used, no matter the multi-chip module is used transversely or longitudinally, only the through holes of adjacent modules are aligned, and the fixing studs 11 are used for penetrating and fixing, so that the use is convenient.

In the embodiment of the utility model, the junction box is arranged at the bottom end of the PET bottom layer 4, and the diode is designed on the PCB, so that the wiring is complex, the difficulty of the manufacturing process is high, the junction box is arranged at the back of the component, the wiring of the component is simplified, the manufacturing flow can be optimized, and the junction box uses the traditional mode with the diode to improve the hot spot effect generated under the condition that the component is shielded.

The thickness of each layer in fig. 1 and 2 is not represented by a true thickness ratio for better illustration.

Those of ordinary skill in the art will appreciate that: the discussion of any of the embodiments above is merely exemplary and is not intended to suggest that the scope of the utility model (including the claims) is limited to these examples; the technical features of the above embodiments or in the different embodiments may also be combined within the idea of the utility model, the steps may be implemented in any order and there are many other variations of the different aspects of the utility model as described above, which are not provided in detail for the sake of brevity.

The present utility model is intended to embrace all such alternatives, modifications and variances which fall within the broad scope of the appended claims. Therefore, any omission, modification, equivalent replacement, improvement, etc. of the present utility model should be included in the scope of the present utility model.

Claims

1. The utility model provides a PCB board light subassembly, includes PCB bottom plate (1), battery piece (2), its characterized in that still includes:

the first EVA film (3) is laminated at the bottom end of the PCB base plate (1), the PET bottom layer (4) is laminated at the bottom end of the first EVA film (3), and the battery piece (2) is laminated above the PCB base plate (1);

a glass fiber cloth layer (5) laminated between the battery piece (2) and the PCB base plate (1);

a second EVA film (6) laminated on the top end of the battery piece (2), wherein a PET top layer (7) is laminated on the top end of the second EVA film (6);

the outer side edge of the PET bottom layer (4) exceeds the outer side edge of the PCB bottom plate (1) by 5 to 10mm, and the outer side edge of the PET top layer (7) exceeds the outer side edge of the PCB bottom plate (1) by 5 to 10mm.

2. A PCB board light weight assembly according to claim 1, characterized in that a third EVA film (8) is laminated between the PCB board (1) and the glass fibre cloth layer (5).

3. A PCB board light weight assembly according to claim 1, characterized in that a fourth EVA film (9) is laminated between the fiberglass cloth layer (5) and the battery piece (2).

4. The light assembly of claim 1, wherein the bottom end of the PET bottom layer (4) is provided with a junction box.

5. The PCB board light assembly of claim 1, wherein the outer edges of the glass fiber cloth layer (5) and the battery pieces (2) do not exceed the outer edge of the PCB board (1).

6. A PCB board light assembly according to claim 1, characterized in that the PET bottom layer (4) is laminated with an insulating tape (10) beyond the top end of the edge portion of the PCB board (1) and the PET top layer (7) is laminated with an insulating tape beyond the bottom end of the edge portion of the PCB board (1).

7. The light assembly of the PCB according to claim 1, wherein lower through holes (41) are formed in four corners of the PET bottom layer (4) which extend beyond the edge part of the PCB bottom plate (1), upper through holes (71) are correspondingly formed in four corners of the PET top layer (7) which extend beyond the edge part of the PCB bottom plate (1), and fixing studs (11) are penetrated through the upper through holes (71) and the lower through holes (41).