Curved surface photovoltaic module with high generating capacity

Abstract

The utility model belongs to the technical field of photovoltaics, and particularly relates to a curved-surface photovoltaic assembly with high generating capacity, which comprises a curved-surface front plate, a front adhesive film layer, a generating unit layer, a rear adhesive film layer and a curved-surface back plate, the curved surface front plate, the front adhesive film layer, the power generation unit layer, the rear adhesive film layer and the curved surface back plate are in a wave shape, the wave-shaped curved surface front plate, the wave-shaped front adhesive film layer, the wave-shaped power generation unit layer, the wave-shaped rear adhesive film layer and the wave-shaped curved surface back plate are divided into a plurality of wave crest areas and wave trough areas, and a single wave crest area and two adjacent wave trough areas form a wavelength curved surface. The curved surface photovoltaic module with the high generating capacity has the advantages that the manufacturing process is simple, the influence of current mismatch and shielding can be reduced, and therefore the generating capacity is improved.

Description

Technical Field

[0001] The utility model belongs to the technical field of photovoltaics, and particularly relates to a curved photovoltaic module with high power generation. Background Art

[0002] Solar energy is a renewable and clean energy source that is not restricted by geography. In recent years, with the development of photovoltaic technology, the cost of photovoltaic power generation has decreased rapidly. Photovoltaic power generation technology has been used in a wider range, and the combination of photovoltaics and buildings has also become one of the fields of photovoltaic applications.

[0003] Building integrated photovoltaics (BIPV) is a technology that integrates photovoltaic products into buildings. The photovoltaic power generation device is used as an inseparable building component of the building, replacing some building materials. With the continuous development of building integrated photovoltaics, the demand for curved photovoltaic modules is also increasing day by day.

[0004] Because the surface of the curved photovoltaic module is curved, the light intensity received by the solar cells at different positions is different under light, which leads to current mismatch. Moreover, affected by the incident light angle, the battery cells in the wave peak area will block the battery cells in the wave trough area during some time periods, resulting in the hot spot effect, which seriously affects the normal operation of the battery and the overall performance of the system. Summary of the Utility Model

[0005] The purpose of the utility model is to provide a curved photovoltaic module with high power generation to solve the technical problem that the battery cells in the wave peak area will block the battery cells in the wave trough area during some time periods, resulting in the hot spot effect, which seriously affects the normal operation of the battery and the overall performance of the system. The manufacturing process is simple, and it can reduce the influence of current mismatch and occlusion, so as to achieve the purpose of improving power generation.

[0006] To solve the above technical problems, the utility model provides a curved photovoltaic module with high power generation, which includes the following components that are fully bonded in sequence:

[0007] A front curved panel, a front encapsulant layer, a power generation unit layer, a rear encapsulant layer, and a rear curved panel. The front curved panel, the front encapsulant layer, the power generation unit layer, the rear encapsulant layer, and the rear curved panel are wavy. The wavy front curved panel, front encapsulant layer, power generation unit layer, rear encapsulant layer, and rear curved panel are divided into several wave peak areas and wave trough areas. A single wave peak area and two adjacent wave trough areas form a wavelength curved surface;

[0008] The power generation unit layer is composed of several power generation unit bodies. The several power generation unit bodies are rectangular, and the length directions of the several power generation unit bodies are perpendicular to the wavy extension direction of the front curved panel;

[0009] Diodes are connected in parallel to the power generation unit bodies located in the wave trough areas of the front curved panel.

[0010] Further, a plurality of the power generation unit bodies are laid along the wave extension direction of the front curved panel, and a plurality of the power generation unit bodies perpendicular to the wave extension direction of the front curved panel are connected in series to form a power generation unit strip, and a plurality of the power generation unit strips are laid side by side between the front curved panel and the rear curved panel;

[0011] Within one curved surface period, the power generation unit strip is connected in parallel with the adjacent power generation unit strip.

[0012] Further, adjacent power generation unit layers are connected in parallel or in series.

[0013] Further, the diode adopts a planar diode, and the number of the planar diodes is the same as the number of series strings of the power generation unit strip blocked by the wave crest region.

[0014] Further, the front encapsulant layer and the rear encapsulant layer adopt one of EVA, POE or PVB.

[0015] Further, the front curved panel adopts a curved glass with a high light transmittance.

[0016] Further, the power generation unit body adopts a plurality of crystalline silicon or amorphous silicon.

[0017] Further, the length of the power generation unit body is less than half of the chord length of the front curved panel.

[0018] Further, the rear curved panel adopts one of a backsheet or glass.

[0019] The beneficial effects of the present utility model are as follows:

[0020] 1. Within one curved surface period, the power generation unit strip is connected in parallel with the adjacent power generation unit strip, which can reduce the current mismatch problem caused by different currents of the power generation unit strips at different curved surface positions.

[0021] 2. Diodes are connected in parallel at the power generation unit bodies in the trough region. When the power generation unit bodies are blocked, the diodes are turned on so that the blocked power generation unit bodies are bypassed, and it will not affect the unblocked power generation unit bodies in the same string to continue generating electricity, thereby reducing the power generation loss of the curved surface photovoltaic module caused by occlusion, and thus improving the overall power generation.

[0022] To make the above objects, features and advantages of the present utility model more obvious and understandable, the following specific preferred embodiments are given below in conjunction with the accompanying drawings and are described in detail as follows. Description of the Drawings

[0023] In order to more clearly illustrate the specific embodiments of the present invention or the technical solutions in the prior art, the following will briefly introduce the drawings required for the description of the specific embodiments or the prior art. Obviously, the drawings in the following description are some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0024] Figure 1 It is a schematic structural diagram of the curved photovoltaic module with high power generation of the present invention;

[0025] Figure 2 It is a side view structural diagram of the peak region and the trough region with high power generation of the present invention;

[0026] Figure 3 It is a side view explosion diagram of the present invention.

[0027] In the figure:

[0028] 1. Curved front plate;

[0029] 2. Front adhesive film layer;

[0030] 3. Power generation unit layer; 31. Power generation unit body; 32. Power generation unit strip;

[0031] 4. Rear adhesive film layer;

[0032] 5. Curved back plate;

[0033] 6. Diode;

[0034] 7. Peak region;

[0035] 8. Trough region. Specific embodiments

[0036] In order to make the objectives, technical solutions and advantages of the embodiments of the present invention clearer, the following will clearly and completely describe the technical solutions of the present invention in conjunction with the drawings. Obviously, the described embodiments are some but not all of the embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts fall within the scope of protection of the present invention.

[0037] Embodiment:

[0038] Such as Figures 1 to 3As shown in the figure, a curved photovoltaic module with high power generation includes the following components that are fully adhered in sequence: a curved front panel 1, a front encapsulant layer 2, a power generation unit layer 3, a rear encapsulant layer 4, and a curved back panel 5. The curved front panel 1, the front encapsulant layer 2, the power generation unit layer 3, the rear encapsulant layer 4, and the curved back panel 5 are wavy. The wavy curved front panel 1, the front encapsulant layer 2, the power generation unit layer 3, the rear encapsulant layer 4, and the curved back panel 5 are divided into several peak regions 7 and valley regions 8. A single peak region 7 and two adjacent valley regions 8 form a wavelength curved surface.

[0039] In this embodiment, the front encapsulant layer 2 and the rear encapsulant layer 4 are made of one of EVA, POE, or PVB. The curved front panel 1 is made of curved glass with high light transmittance. The power generation unit body 31 is made of several crystalline silicon or amorphous silicon. The length of the power generation unit body 31 is less than half of the chord length of the curved front panel 1. The curved back panel 5 is made of one of a back panel or glass.

[0040] As Figures 1 to 3 shown in the figure, the power generation unit layer 3 is composed of several power generation unit bodies 31. The several power generation unit bodies 31 are rectangular. The length direction of the several power generation unit bodies 31 is perpendicular to the wavy extension direction of the curved front panel 1. Diodes 6 are connected in parallel at the power generation unit bodies 31 located in the valley region 8 of the curved front panel 1. By connecting diodes 6 in parallel at the power generation unit bodies 31 in the valley region 8, when a power generation unit body 31 is blocked, the diode turns on, causing the blocked power generation unit body 31 to be bypassed, and it will not affect the unblocked power generation unit bodies 31 in the same string to continue generating electricity, thereby reducing the power generation loss of the curved photovoltaic module caused by occlusion.

[0041] As Figures 1 to 3 shown in the figure, several power generation unit bodies 31 are laid along the wavy extension direction of the curved front panel 1. Several of the power generation unit bodies 31 perpendicular to the wavy extension direction of the curved front panel 1 are connected in series to form a power generation unit strip 32. Several power generation unit strips 32 are laid side by side between the curved front panel 1 and the curved back panel 5. Within one curved surface period, the power generation unit strips 32 are connected in parallel with their adjacent power generation unit strips 32. Connecting adjacent strings in parallel within one curved surface can reduce the current mismatch problem caused by different currents in different position strings, thereby increasing the power generation of the curved photovoltaic module.

[0042] In this embodiment, the diode 6 is a planar diode 6, and the number of planar diodes can be determined according to the number of blocked strings of the power generation unit strips in the peak region.

[0043] In summary: By connecting adjacent power generation unit strips 32 in parallel within one curved surface period and connecting diodes 6 in parallel at the power generation unit bodies 31 in the valley region 8, the current mismatch and the influence of occlusion can be reduced, thereby increasing the power generation of the curved photovoltaic module.

[0044] All the components selected in this application are common standard components or components known to those skilled in the art, and their structures and principles can be learned from technical manuals or obtained through conventional experimental methods by those skilled in the art.

[0045] In the description of the embodiments of the present utility model, unless otherwise clearly defined and limited, the terms "installation", "connection", and "coupling" shall be understood in a broad sense. For example, it may be a fixed connection, a detachable connection, or an integral connection; it may be a mechanical connection or an electrical connection; it may be a direct connection or an indirect connection through an intermediate medium, and it may be the communication inside two components. 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.

[0046] In the description of the present utility model, it should be noted that the orientation or positional relationship indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation to the present utility model. In addition, the terms "first", "second", and "third" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance.

[0047] Based on the above inspiration from the ideal embodiments of the present utility model, through the above description, relevant staff can completely make various changes and modifications without departing from the technical idea of this utility model. The technical scope of this utility model is not limited to the content in the specification, and its technical scope must be determined according to the scope of the claims.

Claims

1. A curved photovoltaic module with high power generation, characterized in that: Including full fit in sequence: A curved front panel (1), a front adhesive film layer (2), a power generation unit layer (3), a rear adhesive film layer (4) and a curved back panel (5), wherein the curved front panel (1), the front adhesive film layer (2), the power generation unit layer (3), the rear adhesive film layer (4) and the curved back panel (5) are wavy in shape, and the wavy curved front panel (1), the front adhesive film layer (2), the power generation unit layer (3), the rear adhesive film layer (4) and the curved back panel (5) are divided into a plurality of wave crest regions (7) and wave trough regions (8), and a single wave crest region (7) and two adjacent wave trough regions (8) form a wavelength curved surface; The power generation unit layer (3) is composed of a plurality of power generation unit bodies (31), the plurality of power generation unit bodies (31) are rectangular, and the length direction of the plurality of power generation unit bodies (31) is perpendicular to the wave extension direction of the curved front plate (1); The power generation unit body (31) is located at the trough area (8) of the curved front panel (1) and is connected in parallel with a diode (6).

2. A high power generation curved photovoltaic module as claimed in claim 1, characterized in that: A plurality of the power generation unit bodies (31) are laid along the wave extension direction of the curved front plate (1), a plurality of the power generation unit bodies (31) perpendicular to the wave extension direction of the curved front plate (1) are connected in series to form a power generation unit strip (32), and a plurality of the power generation unit strips (32) are laid in parallel between the curved front plate (1) and the curved back plate (5); In one curved surface period, the power generation unit bar (32) is connected in parallel with its adjacent power generation unit bar (32).

3. A high power generation curved photovoltaic module as claimed in claim 2, characterized in that: Adjacent power generation unit layers (3) are connected in parallel or in series.

4. A high-energy-generating curved photovoltaic module as claimed in claim 3, characterized in that: The diodes (6) are planar diodes (6), and the number of the planar diodes (6) is the same as the number of shielding strings of the power generation unit bars (32) in the wave peak region (7).

5. A high-power-generating curved photovoltaic module as claimed in claim 4, characterized in that: The front adhesive film layer (2) and the rear adhesive film layer (4) are made of one of EVA, POE or PVB.

6. A curved photovoltaic module with high power generation capacity as claimed in claim 5, characterized in that: The curved front panel (1) is made of high-transmittance curved glass.

7. A high-power-generating curved photovoltaic module according to claim 6, characterized in that: The power generation unit body (31) is made of crystalline silicon or amorphous silicon.

8. A high power generation curved photovoltaic module as claimed in claim 7, characterized in that: The length of the power generation unit body (31) is less than half the chord length of the curved front panel (1).

9. A high power generation curved photovoltaic module as claimed in claim 8, characterized in that: The curved back panel (5) is made of one of a back panel and glass.

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