Amorphous silicon film photovoltaic and photo-thermal integrated assembly

Abstract

The invention relates to the field of photovoltaic technology, and particularly discloses an amorphous silicon film photovoltaic and photo-thermal integrated assembly, which comprises an outer frame, a first insulating layer, a heat absorption layer, a battery piece and photovoltaic glass are stacked in the outer frame, the heat absorption layer covers the first insulating layer, a heat exchange tube is arranged in the heat absorption layer, the heat exchange tube is fixedly connected with the heat absorption layer, and the photovoltaic glass is arranged in the heat absorption layer. The battery piece covers the heat absorption layer, and the photovoltaic glass covers the battery piece; a first gap exists between the heat absorption layer and the battery piece, a second gap exists in the heat absorption layer, and the heat exchange tube is arranged in the second gap. The problem of battery breakage caused by thermal expansion mismatch of crystalline silicon PVT can be solved, and the structural stability of the heat collector is enhanced.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of photovoltaic technology, in particular to a non-crystalline silicon thin film photovoltaic and photothermal integrated component. BACKGROUND

[0002] PVT (Photovoltaic-Thermal) is a component that combines photovoltaic power generation and solar thermal energy collection functions, aiming to solve the problems of traditional photovoltaic and hot water systems, such as large occupation, high investment, and low efficiency. PVT components can fully recover the waste heat generated during photovoltaic operation through high-efficiency heat conduction structures, and can efficiently transfer heat energy to a heat pump system to realize "power generation + heat production" dual output. This design not only improves energy utilization efficiency, but also reduces the surface temperature of the component, further improving the power generation efficiency.

[0003] The existing crystalline silicon cell PVT has a large difference in the thermal expansion coefficient between the internal aluminum plate and the crystalline silicon cell, and a large temperature gradient and fluctuation are generated during long-term operation of the component, which can easily cause the photovoltaic layer to crack and break. SUMMARY

[0004] In order to solve the problem of easy cracking and breaking of the existing silicon crystal cell PVT, the present application provides a non-crystalline silicon thin film photovoltaic and photothermal integrated component.

[0005] The non-crystalline silicon thin film photovoltaic and photothermal integrated component provided by the present application adopts the following technical solution:

[0006] A non-crystalline silicon thin film photovoltaic and photothermal integrated component, comprising an outer frame, a first insulating layer, a heat absorption layer, a cell piece, a second insulating layer and photovoltaic glass are arranged in the outer frame in a stacked manner, the heat absorption layer covers the first insulating layer, a heat exchange pipe is arranged in the heat absorption layer, the heat exchange pipe is fixedly connected with the heat absorption layer, the cell piece covers the heat absorption layer, the photovoltaic glass covers the second insulating layer, and the second insulating layer covers the cell piece; a first gap exists between the heat absorption layer and the cell piece, a second gap exists in the heat absorption layer, and the heat exchange pipe is arranged in the second gap.

[0007] By adopting the above technical solution, the first gap can reduce the influence of instantaneous thermal shock on the cell piece, and inhibit the micro-cracks of the non-crystalline silicon thin film caused by temperature difference, and the second gap can be combined with the heat exchange pipe to increase the heat exchange area and improve the heat conduction effect.

[0008] In some embodiments, the heat absorption layer comprises a first fixed layer and a second fixed layer, a first groove is formed on one side of the first fixed layer facing the second fixed layer, a second groove is formed on one side of the second fixed layer facing the first fixed layer, the second gap is formed by the first groove and the second groove, and the first groove and the second groove are both in a wave shape.

[0009] By adopting the technical scheme, the wave-shaped grooves of the heat absorption layer are closely attached to the outer wall of the heat exchange pipe, the heat exchange area is increased, and the heat conduction uniformity is improved.

[0010] In some embodiments, the side of the first fixed layer away from the second fixed layer is provided with a plurality of groups of heat absorption components, each group of heat absorption components comprising a plurality of heat absorption plates, the plurality of heat absorption plates being arranged in an H-shaped manner, and adjacent heat absorption components being arranged at intervals.

[0011] By adopting the technical scheme, the heat absorption plates are arranged in an H-shaped manner, the thermal expansion stress is dispersed in multiple directions, the accumulation of deformation in a single direction is reduced, and structural warping is avoided.

[0012] In some embodiments, the edge of the first fixed layer is provided with a first mounting plate, the edge of the second fixed layer is provided with a second mounting plate, the first mounting plate and the second mounting plate are arranged opposite to each other, the first mounting plate is attached to the second mounting plate, and the outer frame is connected to the first mounting plate and the second mounting plate.

[0013] By adopting the technical scheme, the first mounting plate and the second mounting plate are arranged, which facilitates the fixation between the outer frame and the photovoltaic and photo-thermal component and facilitates operation.

[0014] In some embodiments, the outer frame comprises a first connecting frame and a second connecting frame, the first connecting frame is connected to the cell piece, the second connecting frame is connected to the heat absorption layer, the first connecting frame and the second connecting frame are fixedly connected, and a clamping structure is arranged between the first connecting frame and the second connecting frame, the clamping structure being used for enhancing the connection between the first connecting frame and the second connecting frame.

[0015] By adopting the technical scheme, the first connecting frame and the second connecting frame are arranged, the thermal expansion stress can be dispersed between the first connecting frame and the second connecting frame, and cracking of the photovoltaic and photo-thermal component is avoided as much as possible.

[0016] In some embodiments, the clamping structure comprises a protrusion arranged on the first connecting frame, the protrusion being arranged towards the second connecting frame, a groove being arranged on the second connecting frame, the groove being arranged towards the first connecting frame, and the groove being matched with the protrusion.

[0017] By adopting the technical scheme, the protrusion and the groove are wedge-shaped matched to form a self-locking structure, the expansion gap is automatically compensated in temperature cycling, and the bolt loosening is avoided.

[0018] In some embodiments, the outer frame comprises a center part, a first positioning part, a second positioning part (15), a first dismounting part and a second dismounting part, the first dismounting part and the second dismounting part are respectively connected to opposite sides of the center part, the first dismounting part is detachably connected with the first positioning part, the first dismounting part and the first positioning part enclose to form a first positioning groove, the first positioning groove is clamped with the battery piece; the second dismounting part is detachably connected with the second positioning part; the second dismounting part and the second positioning part enclose to form a second positioning groove, the second positioning groove is clamped with the heat absorption layer.

[0019] In some embodiments, the first positioning part comprises a first limiting part and a first dismounting part, the first limiting part is fixedly connected with the center part, and the first dismounting part is detachably connected with the first limiting part; the second positioning part comprises a second limiting part and a second dismounting part, the second limiting part is fixedly connected with the center part, and the second dismounting part is detachably connected with the second limiting part.

[0020] By adopting the above technical scheme, the outer frame is quickly disassembled and assembled through buckling, the component replacement can be completed without tools, and the maintenance cost is reduced.

[0021] In some embodiments, the center part has a first face, the first positioning part has a second face, and the first dismounting part has a third face, the first face is in contact with the bottom wall of the battery piece, the second face is in contact with the side wall of the battery piece, and the third face is in contact with the top wall of the battery piece.

[0022] By adopting the above technical scheme, the first / second mounting plate is engaged with the outer frame at multiple points, the interlayer shear strength is improved, and slippage or falling off during long-term operation is avoided.

[0023] By adopting the above technical scheme, the center part has a fourth face, the second positioning part has a fifth face, and the second dismounting part has a sixth face, the fourth face is in contact with the top wall of the first mounting plate, the fifth face is in contact with the side wall of the first mounting plate, and the sixth face is in contact with the bottom wall of the second mounting plate.

[0024] In some embodiments, the outer wall of the heat exchange pipe is provided with a rib structure, and the rib structure extends spirally along the axial direction of the heat exchange pipe.

[0025] By adopting the above technical scheme, the spiral rib design of the pipe wall enhances the fluid turbulence effect and improves the heat exchange coefficient.

[0026] Compared with the prior art, the present application has at least one of the following beneficial technical effects:

[0027] 1. By setting the first gap, an air insulation layer is formed, the influence of instantaneous thermal shock on the battery piece is reduced, and the micro-cracks of amorphous silicon film caused by temperature difference are inhibited; by setting the second gap, the wave-shaped groove is tightly fitted with the outer wall of the heat exchange pipe, the heat exchange area is increased, and the uniformity of heat conduction is improved;

[0028] 2. The heat absorption plates are spliced into H-shaped arrangement to disperse thermal expansion stress in multiple directions, reduce the accumulation of deformation in single direction, and avoid structural warping;

[0029] 3. The wedge-shaped engagement of the engagement protrusion and the groove forms a self-locking structure, automatically compensates the expansion gap in temperature cycle, avoids loose bolts, and the buckle type disassembly design facilitates maintenance. Meanwhile, the multi-surface contact of the clamping groove and the edges of the components disperses mechanical stress and prevents edge cracking. BRIEF DESCRIPTION OF DRAWINGS

[0030] Figure 1 is an exploded structural schematic diagram of an embodiment of the present application.

[0031] Figure 2 is an internal cross-sectional view of an embodiment of the present application.

[0032] Figure 3 is an exploded structural schematic diagram of a heat absorption layer in an embodiment of the present application.

[0033] Figure 4 is a top view of the heat absorption layer in an embodiment of the present application.

[0034] Figure 5 is an internal cross-sectional view of another embodiment of the present application.

[0035] Figure 6 is a cross-sectional view of an outer frame in another embodiment of the present application.

[0036] In the drawings:

[0037] 1, outer frame; 11, first connecting frame; 12, second connecting frame; 13, center part; 131, first surface; 14, first positioning part; 140, second surface; 141, first positioning groove; 143, first dismounting part; 144, third surface; 145, fourth surface; 146, fifth surface; 147, sixth surface; 148, first clamping opening; 149, first buckle; 15, second positioning part; 151, second positioning groove; 153, second dismounting part; 154, second clamping opening; 155, second buckle; 2, first insulation layer; 3, heat absorption layer; 31, first fixing layer; 32, second fixing layer; 33, first groove; 34, second groove; 35, first mounting plate; 36, second mounting plate; 4, battery piece; 41, second insulation layer; 5, photovoltaic glass; 6, heat exchange pipe; 7, first gap; 8, second gap; 9, heat absorption assembly; 91, heat absorption plate; 10, engagement protrusion. DETAILED DESCRIPTION

[0038] With reference to the drawings of the embodiments of the present application, the technical solutions in the embodiments of the present application will be clearly and completely described. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments of the present application. Based on the embodiments of the present application, all other embodiments obtained by those skilled in the art without creative work fall within the scope of the present application.

[0039] In the description of the present application, it should be noted that, unless otherwise explicitly specified and limited, the term "and / or" in the present application is only to describe the association relationship of the associated objects, which means that there can be three kinds of relationships, for example, A and / or B can mean that there are three cases of A alone, A and B together, and B alone. In addition, the character " / " in the present application generally represents an "or" relationship between the front and rear associated objects without special explanation.

[0040] With reference to Figure 1 and Figure 2 , the present application provides a kind of amorphous silicon thin film photovoltaic light heat integrated component, including frame 1, first insulating layer 2, heat absorption layer 3, cell piece 4, second insulating layer 41 and photovoltaic glass 5 are arranged in frame 1, heat absorption layer 3 covers first insulating layer 2, heat absorption layer 3 is provided with heat exchange pipe 6, heat exchange pipe 6 is fixedly connected with heat absorption layer 3, cell piece 4 covers heat absorption layer 3, photovoltaic glass 5 covers second insulating layer 41, second insulating layer 41 covers cell piece 4;First gap 7 exists between heat absorption layer 3 and cell piece 4, second gap 8 exists in heat absorption layer 3, heat exchange pipe 6 is arranged in second gap 8. By setting first gap 7 between heat absorption layer 3 and cell piece 4, low thermal conductivity air insulation layer is formed, which can significantly reduce the instantaneous heat shock of cell piece 4 to heat absorption layer 3, and inhibit the microcracks generated by the difference between thermal expansion and cold shrinkage of amorphous silicon thin film;Second gap 8 is arranged inside heat absorption layer 3 and heat exchange pipe 6 is embedded therein, which helps to improve the heat exchange area. Further, the outer wall of the heat exchange pipe is provided with a rib structure, and the rib structure extends spirally along the axial direction of the heat exchange pipe. The rib structure can improve the heat exchange coefficient and achieve efficient heat exchange.

[0041] With reference to Figure 2 and Figure 3 , further, in the present embodiment, heat absorption layer 3 includes first fixed layer 31 and second fixed layer 32, first fixed layer 31 is provided with first groove 33 on the side facing second fixed layer 32, second fixed layer 32 is provided with second groove 34 on the side facing first fixed layer 31, second gap 8 is enclosed by first groove 33 and second groove 34, and first groove 33 and second groove 34 are both wavy. First fixed layer 31 and second fixed layer 32 form second gap 8 by wave-shaped groove clasp, and the wavy inner wall can fit the outer wall of heat exchange pipe 6, which helps to increase the heat exchange area, so as to achieve perfect heat exchange effect.

[0042] With reference to Figure 3 And Figure 4 Further, in the present embodiment, the side of the first fixed layer 31 facing away from the second fixed layer 32 is provided with multiple groups of heat absorption components 9, each group of heat absorption components 9 including multiple heat absorption plates 91 arranged in an H shape, with adjacent heat absorption components 9 spaced apart. The H-shaped design allows the heat absorption layer 3 to expand in all directions, significantly reducing the total expansion in a single direction, helping to reduce thermal expansion and enhance the flexibility of the structure, thereby reducing the risk of the battery sheet 4 breaking and improving the efficiency and reliability of the heat collector. This design not only improves thermal efficiency, but also enhances the structural stability of the heat collector by reducing thermal expansion differences.

[0043] With reference to Figure 5 In some embodiments, the edge of the first fixed layer 31 is provided with a first mounting plate 35, and the edge of the second fixed layer 32 is provided with a second mounting plate 36, the first mounting plate 35 and the second mounting plate 36 are oppositely arranged, and the first mounting plate 35 is attached to the second mounting plate 36; the outer frame 1 includes a first connecting frame 11 and a second connecting frame 12, the first connecting frame 11 is connected to the battery sheet 4, the second connecting frame 12 is connected to the heat absorption layer 3, and the second connecting frame 12 is connected to the first mounting plate 35 and the second mounting plate 36. The first and second mounting plates 36 form a "double flange" structure, which forms a multi-point mechanical engagement with the first connecting frame 11, improves the interlayer shear strength, and does not produce slip.

[0044] The first connecting frame 11 and the second connecting frame 12 are fixedly connected, and a clamping structure is provided between the first connecting frame 11 and the second connecting frame 12, which is used to enhance the connection between the first connecting frame 11 and the second connecting frame 12. The clamping structure includes a clamping protrusion 10 provided on the first connecting frame 11, the clamping protrusion 10 is arranged towards the second connecting frame 12, a clamping groove 112 is provided on the second connecting frame 12, the clamping groove 112 is arranged towards the first connecting frame 11, and the clamping groove cooperates with the clamping protrusion 10. The outer frame 1 adopts a split design of the first connecting frame 11 and the second connecting frame 12, and a clamping structure 10 is arranged between them to form a thermal-electric separation boundary, and the clamping protrusion 10 and the clamping groove structure form a constraint to avoid displacement between the first connecting frame 11 and the second connecting frame 12 as much as possible. The wedge-shaped cooperation of the clamping protrusion 10 and the clamping groove 112 provides a self-locking function, automatically compensates for the thermal expansion gap during temperature cycling, maintains a constant clamping force, and avoids the loosening problem caused by thermal fatigue of traditional bolts.

[0045] With reference to Figure 5 And Figure 6In other embodiments, the outer frame 1 comprises a center part 13, a first positioning part 14, a second positioning part 15, a first dismounting part 143 and a second dismounting part 153, the first dismounting part 143 and the second dismounting part 153 are respectively connected on the opposite sides of the center part 13, the first dismounting part 143 is detachably connected with the first positioning part 14, the first dismounting part 143 and the first positioning part 14 enclose to form a first positioning groove 141, the first positioning groove 141 is engaged with the battery piece 4; the second dismounting part 153 is detachably connected with the second positioning part 15; the second dismounting part 153 and the second positioning part 15 enclose to form a second positioning groove 151, the second positioning groove 151 is engaged with the heat absorption layer 3. The center part 13 has a first surface 131, the first positioning part 14 has a second surface 140, the first dismounting part 143 has a third surface 144, the first surface 131 is in contact with the bottom wall of the battery piece 4, the second surface 140 is in contact with the side wall of the battery piece 4, and the third surface 144 is in contact with the top wall of the battery piece 4. The center part 13 has a fourth surface 145, the second positioning part 15 has a fifth surface 146, and the second dismounting part 153 has a sixth surface 147, the fourth surface 145 is in contact with the top wall of the first mounting plate 35, the fifth surface 146 is in contact with the side wall of the first mounting plate 35, and the sixth surface 147 is in contact with the bottom wall of the second mounting plate 36.

[0046] Specifically, the first positioning part 14 is provided with a first clamping hole 148, and the first dismounting part 143 is provided with a first buckle 149, the first buckle 149 is connected with the first clamping hole 148. The second positioning part 15 is provided with a second clamping hole 154, and the second dismounting part 153 is provided with a second buckle 155, the second buckle 155 is connected with the second clamping hole 154. It is convenient to realize the connection between the outer frame 1 and the photovoltaic and light heat integrated assembly, and it is helpful to realize better fixing effect.

[0047] It is not difficult to understand that in other embodiments, the position of the outer frame 1 in contact with the photovoltaic and light heat integrated assembly can be provided with a gasket, so as to avoid the rigid contact between the photovoltaic and light heat integrated assembly and the outer frame 1, and avoid the fracture of the photovoltaic and light heat integrated assembly.

[0048] The above are the preferred embodiments of the present application, which do not limit the protection scope of the present application, therefore: any equivalent changes made on the structure, shape and principle of the present application shall be covered within the protection scope of the present application.

Claims

1. An amorphous silicon thin film photovoltaic-photothermal integrated module, characterized in that, The utility model provides a photovoltaic glass, including outer frame (1), first insulating layer (2), heat absorption layer (3), battery piece (4), second insulating layer (41) and photovoltaic glass (5) are arranged in the outer frame (1) in succession, the heat absorption layer (3) covers the first insulating layer (2), the heat absorption layer (3) is provided with heat exchange pipe (6) in, the heat exchange pipe (6) is fixedly connected with the heat absorption layer (3), the battery piece (4) covers the heat absorption layer (3), the photovoltaic glass (5) covers the second insulating layer (41), the second insulating layer (41) covers the battery piece (4), and there is first gap (7) between the heat absorption layer (3) and the battery piece (4), and there is second gap (8) in the heat absorption layer (3), and the heat exchange pipe (6) is arranged in the second gap (8).

2. The amorphous silicon thin film photovoltaic-photothermal integrated component according to claim 1, characterized in that: The heat absorption layer (3) includes first fixed layer (31) and second fixed layer (32), the first fixed layer (31) is provided with first recess (33) on the side towards the second fixed layer (32), the second fixed layer (32) is provided with second recess (34) on the side towards the first fixed layer (31), the second gap (8) is formed by the first recess (33) and the second recess (34), and the first recess (33) and the second recess (34) are both in wave shape.

3. The amorphous silicon thin film photovoltaic-photothermal integrated component according to claim 2, characterized in that: The side, away from the second fixed layer (32), of the first fixed layer (31) is provided with a plurality of heat absorption assemblies (9), each of the heat absorption assemblies (9) includes a plurality of heat absorption plates (91), the plurality of heat absorption plates (91) are arranged in H shape, and adjacent heat absorption assemblies (9) are arranged at intervals.

4. The amorphous silicon thin film photovoltaic-photothermal integrated component of claim 2, characterized in that: The edge of the first fixed layer (31) is provided with a first mounting plate (35), the edge of the second fixed layer (32) is provided with a second mounting plate (36), the first mounting plate (35) and the second mounting plate (36) are oppositely arranged, the first mounting plate (35) is attached to the second mounting plate (36), and the outer frame (1) is connected to the first mounting plate (35) and the second mounting plate (36).

5. The amorphous silicon thin film photovoltaic-photothermal integrated component of claim 1, characterized in that: The outer frame (1) includes a first connecting frame (11) and a second connecting frame (12), the first connecting frame (11) is connected to the battery piece (4), the second connecting frame (12) is connected to the heat absorption layer (3), the first connecting frame (11) and the second connecting frame (12) are fixedly connected, and a clamping structure is arranged between the first connecting frame (11) and the second connecting frame (12), the clamping structure is used for enhancing the connection between the first connecting frame (11) and the second connecting frame (12).

6. The amorphous silicon thin film photovoltaic-photothermal integrated component according to claim 5, characterized in that: The clamping structure includes a clamping protrusion (10) arranged on the first connecting frame (11), the clamping protrusion (10) is arranged towards the second connecting frame (12), a clamping groove is arranged on the second connecting frame (12), the clamping groove is arranged towards the first connecting frame (11), and the clamping groove is matched with the clamping protrusion (10).

7. The amorphous silicon thin film photovoltaic-photothermal integrated component of claim 1, wherein: The outer frame (1) comprises a center part (13), a first positioning part (14), a second positioning part (15), a first dismounting part (143) and a second dismounting part (153), the first dismounting part (143) and the second dismounting part (153) are connected on the opposite sides of the center part (13) respectively, the first dismounting part (143) is detachably connected with the first positioning part (14), the first dismounting part (143) and the first positioning part (14) enclose to form a first positioning groove (141), the first positioning groove (141) is engaged with the battery piece (4); the second dismounting part (153) is detachably connected with the second positioning part (15); the second dismounting part (153) and the second positioning part (15) enclose to form a second positioning groove (151), the second positioning groove (151) is engaged with the heat absorption layer (3).

8. The amorphous silicon thin film photovoltaic-photothermal integrated component according to claim 7, characterized in that: The center part (13) has a first face (131), the first positioning part (14) has a second face (140), the first dismounting part (143) has a third face (144), the first face (131) is in contact with the bottom wall of the battery piece (4), the second face (140) is in contact with the side wall of the battery piece (4), and the third face (144) is in contact with the top wall of the battery piece (4).

9. The amorphous silicon thin film photovoltaic-photothermal integrated component of claim 7, characterized in that: The center part (13) has a fourth face (145), the second positioning part (15) has a fifth face (146), the second dismounting part (153) has a sixth face (147), the fourth face (145) is in contact with the top wall of the first mounting plate (35), the fifth face (146) is in contact with the side wall of the first mounting plate (35), and the sixth face (147) is in contact with the bottom wall of the second mounting plate (36).

10. The amorphous silicon thin film photovoltaic-photothermal integrated component of claim 1, characterized in that: The outer wall of the heat exchange pipe (6) is provided with a rib structure, and the rib structure extends spirally along the axial direction of the heat exchange pipe (6).

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