Concentrating photovoltaic module

Abstract

The concentrating photovoltaic module comprises a bottom plate, a lens group top plate, a frame assembly and a battery assembly, the lens group top plate, the bottom plate and the frame assembly define a closed space, and the battery assembly is located in the closed space; the frame assembly is defined by a plurality of frames, each frame comprises a side plate, an upper packaging clamping groove, a lower packaging clamping groove and a mounting clamping groove, the side plates extend in the vertical direction, the upper packaging clamping grooves are located in the tops of the side plates, the mounting clamping grooves are formed in the bottoms of the side plates, notches of the mounting clamping grooves face downwards, and the lower packaging clamping grooves are formed in the sides, facing the inner sides of the side plates, of the mounting clamping grooves. The notch direction of the lower packaging clamping groove is consistent with the notch direction of the upper packaging clamping groove; the periphery of the top plate of the lens group is inserted into the upper packaging clamping groove of each frame, and the periphery of the bottom plate is inserted into the lower packaging clamping groove of each frame; the battery assembly is arranged on the bottom plate. According to the invention, the compact and miniaturized design of the structure of the concentrating photovoltaic module is realized, and the assembly efficiency and the installation efficiency of the concentrating photovoltaic module are improved.

Description

Technical Field

[0001] The present invention relates to the field of photovoltaic technology, and in particular to a concentrating photovoltaic module. Background Art

[0002] With the growing global demand for clean energy, photovoltaic power generation has garnered widespread attention as a key renewable energy source. In photovoltaic power generation systems, photovoltaic modules are a core component. Concentrating photovoltaic (CPV) modules use Fresnel lenses to focus sunlight onto photovoltaic cells, significantly reducing the area used for these cells and significantly impacting the commercialization of expensive modules such as gallium arsenide. Unlike conventional flat-panel modules such as crystalline silicon, cadmium telluride, and perovskite, CPV modules typically utilize a cavity-type structure because the Fresnel lens has a focal length, requiring a specific distance between the lens and the light-receiving surface of the cell.

[0003] Traditional CPV module frames often utilize a split structure with separate upper and lower frames and side panels. Assembly requires splicing and multiple sealing processes for each frame. This design not only increases material costs and structural weight, but also reduces sealing reliability due to the numerous joints, making it easy for moisture to intrude into the cavity, impacting module performance. Furthermore, the complex structure of the split frame hinders miniaturization. Furthermore, the large lateral dimensions of the frame create a wide spliced ​​frame when multiple modules are spliced ​​together, preventing this area from receiving light and reducing the overall utilization of the illuminated area.

[0004] Therefore, there is an urgent need to develop a concentrated photovoltaic module structure with a simple frame structure and fewer assembly steps. Summary of the Invention

[0005] In view of this, the present invention provides a concentrating photovoltaic module for at least solving the problems of the conventional concentrating photovoltaic module, such as the complex split frame structure, large size and inconvenient assembly.

[0006] To achieve one, part, or all of the above-mentioned objectives or other objectives, the present invention provides a concentrating photovoltaic module, comprising a bottom plate, a lens assembly top plate, a frame assembly, and a battery assembly, wherein the lens assembly top plate, the bottom plate, and the frame assembly enclose a closed space, and the battery assembly is located in the closed space;

[0007] The frame assembly is formed by enclosing a plurality of frames, wherein a single frame includes a side panel, an upper packaging slot, a lower packaging slot, and a mounting slot. The side panel extends in a vertical direction, the upper packaging slot is located at the top of the side panel, the mounting slot is located at the bottom of the side panel with the slot facing downward, and the lower packaging slot is located on the side of the mounting slot facing the inner side of the side panel, and the slot direction of the lower packaging slot is consistent with the slot direction of the upper packaging slot.

[0008] The periphery of the lens group top plate is inserted into the upper packaging slot of each frame, and the periphery of the bottom plate is inserted into the lower packaging slot of each frame; the battery assembly is arranged on the bottom plate.

[0009] Furthermore, the length of the top plate of the lens group is greater than the length of the bottom plate, and the width of the top plate of the lens group is greater than the width of the bottom plate.

[0010] Furthermore, the outer sides of the upper packaging slot and the outer sides of the mounting slot are aligned with the outer sides of the side panels, and the mounting slot is flush with the lower packaging slot.

[0011] Furthermore, the top plate of the lens group includes a plurality of lenses arranged in an array, the battery assembly includes a plurality of battery strips arranged at intervals, each of the battery strips includes a circuit board strip and a plurality of single battery modules arranged on the circuit board strip; along the edge direction of the concentrating photovoltaic module, the circuit board strip of the outermost battery strip is retracted compared to the outermost lens, the center of each lens is arranged one by one opposite to the center of the light-receiving surface of each single battery module, and the width of a single circuit board strip is smaller than the width of a single lens.

[0012] Furthermore, the width of the lens is W2, the width of the circuit board strip is W3; the width W1 of the mounting slot is less than (W2-W3) / 2; and the focusing ratio of the lens is greater than or equal to 100.

[0013] Furthermore, the circuit strip includes a substrate, a first insulating layer, a circuit layer and a second insulating layer stacked from bottom to top, the circuit layer includes lead-out contacts, several first contact groups and leads, the first contact group includes a first positive contact and a first negative contact, lead-out contacts are set at both ends of the circuit layer, and several first contact groups are set at intervals in the middle of the circuit layer, and adjacent first contact groups are connected by leads; the second insulating layer covers the leads, but does not cover the lead-out contacts and the first contact groups, each of the single battery modules is electrically connected to each of the first contact groups, and the width of the single battery module is less than or equal to the width of the circuit strip.

[0014] Furthermore, the two ends of the circuit strips of each battery strip are set inward compared to the outermost lens, and the lead-out contacts at the ends of each circuit strip are connected by a conductive circuit to achieve electrical connection between the circuit strips, and the edges of the conductive circuit do not exceed the two ends of the circuit strip.

[0015] Furthermore, it also includes a lead-out electrode, the bottom plate is provided with a wire outlet hole, the wire outlet hole is located in the bottom plate area between adjacent battery strips, one end of the lead-out electrode is electrically connected to the conductive circuit, and the other end passes through the wire outlet hole and extends to the outside of the bottom plate.

[0016] Furthermore, it also includes a web, which is arranged parallel to the inner side of the side plate, and a gap is formed between the web and the side plate, the upper end of the web is connected to the bottom of the upper packaging slot, and the lower end of the web is connected to the top of the installation slot or the top of the lower packaging slot.

[0017] Furthermore, the upper packaging slot is filled with sealant, and the sealant in the upper packaging slot is located between the top plate of the lens group and the inner wall of the upper packaging slot, forming an upper sealing layer that is continuous along the circumference of the upper packaging slot; the lower packaging slot is filled with sealant, and the sealant in the lower packaging slot is located between the bottom plate and the inner wall of the lower packaging slot, forming a lower sealing layer that is continuous along the circumference of the lower packaging slot.

[0018] The implementation of the present invention will have the following beneficial effects:

[0019] The concentrating photovoltaic module provided by the present invention includes a base plate, a lens group top plate, a frame assembly and a battery assembly, the lens group top plate, the base plate and the frame assembly enclosed to form a closed space, and the battery assembly is located in the closed space; the frame assembly is formed by enclosing multiple frames, and a single frame includes a side panel, an upper packaging slot, a lower packaging slot and an installation slot, the side panel extends in the vertical direction, the upper packaging slot is located at the top of the side panel, the installation slot is provided at the bottom of the side panel with the slot downward, the lower packaging slot is provided on the side of the installation slot facing the inner side of the side panel, and the slot direction of the lower packaging slot is consistent with the slot direction of the upper packaging slot; the periphery of the lens group top plate is inserted into the upper packaging slot of each frame, and the periphery of the base plate is inserted into the lower packaging slot of each frame; the battery assembly is provided on the base plate. The above-mentioned one-piece frame structure improves the assembly efficiency and installation efficiency of the concentrated photovoltaic module, reduces the risk of poor sealing due to complex splicing, and is conducive to achieving a compact and miniaturized design of the concentrated photovoltaic module. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0021] in:

[0022] Figure 1 Schematic diagram of the structure of a concentrated photovoltaic module in one embodiment;

[0023] Figure 2A schematic diagram of the exploded structure of a concentrated photovoltaic module in one embodiment;

[0024] Figure 3 Schematic diagram of the cross-sectional structure of a concentrated photovoltaic module in one embodiment (partially cut off in the longitudinal direction);

[0025] Figure 4 A schematic cross-sectional view of a frame structure of a concentrating photovoltaic module in one embodiment;

[0026] Figure 5 Schematic diagram of the battery assembly structure on the bottom plate in one embodiment;

[0027] Figure 6 Schematic diagram of a partial cross-sectional structure of a concentrating photovoltaic module in one embodiment, where the dotted line indicates the light path;

[0028] Figure 7 is a schematic diagram of the cross-sectional structure of a circuit board strip in one embodiment;

[0029] Figure 8 Schematic diagram of a top view of the circuit layer in one embodiment;

[0030] Figure 9 Schematic diagram of the back structure of a concentrating photovoltaic module in one embodiment.

[0031] Description of the accompanying figures:

[0032] 100: bottom plate; 110: outlet hole; 120: junction box;

[0033] 200: top plate of lens group; 210: lens;

[0034] 300: border component;

[0035] 310: frame; 311: side panel; 312: upper package slot; 313: lower package slot; 314: mounting slot; 315: web; 316: groove;

[0036] 400: battery assembly; 410: battery strip;

[0037] 411: circuit board strip; 4111: substrate; 4112: first insulating layer; 4113: circuit layer; 4113a: lead contact; 4113b: first contact group; 4113c: lead; 4114: second insulating layer;

[0038] 412: Single battery module;

[0039] 413: conductive circuit; 414: lead-out electrode. DETAILED DESCRIPTION

[0040] Unless otherwise defined, all technical and scientific terms used herein have the same meanings as commonly understood by those skilled in the art to which this invention belongs. The terms used in the specification of the application are for the purpose of describing specific embodiments only and are not intended to limit the present invention. The terms "including" and "having" and any variations thereof in the specification and claims of the present invention and the accompanying drawings are intended to cover non-exclusive inclusions. The terms "first" and "second" in the specification and claims of the present invention and the accompanying drawings are used to distinguish different objects, not to describe a specific order.

[0041] References herein to "embodiments" mean that a particular feature, structure, or characteristic described in connection with the embodiments may be included in at least one embodiment of the present invention. The appearance of this phrase in various places in the specification does not necessarily refer to the same embodiment, nor does it constitute a separate or alternative embodiment that is mutually exclusive of other embodiments. It is understood, both explicitly and implicitly, by those skilled in the art that the embodiments described herein may be combined with other embodiments.

[0042] In order to enable those skilled in the art to better understand the solutions of the present invention, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings.

[0043] Reference Figure 1 、 Figure 2 and Figure 4 The embodiment of the present invention shows a concentrated photovoltaic module, including a bottom plate 100, a lens group top plate 200, a frame assembly 300 and a battery assembly 400. The lens group top plate 200, the bottom plate 100 and the frame assembly 300 enclose a closed space, and the battery assembly 400 is located in the closed space.

[0044] The frame assembly 300 is enclosed by multiple frames 310. Each frame 310 includes a side panel 311, an upper packaging slot 312, a lower packaging slot 313, and a mounting slot 314. The side panel 311 extends in the vertical direction. The upper packaging slot 312 is located at the top of the side panel 311. The mounting slot 314 is located at the bottom of the side panel 311 with the slot facing downward. The lower packaging slot 313 is located on the side of the mounting slot 314 facing the inner side of the side panel 311, and the slot direction of the lower packaging slot 313 is consistent with the slot direction of the upper packaging slot 312.

[0045] The periphery of the lens assembly top plate 200 is inserted into the upper packaging slot 312 of each frame 310 , and the periphery of the bottom plate 100 is inserted into the lower packaging slot 313 of each frame 310 ; the battery assembly 400 is set on the bottom plate 100 .

[0046] In this embodiment, the top plate 200, bottom plate 100 and frame assembly 300 of the lens group are enclosed to form a closed cavity space to protect the battery assembly 400 from external moisture, dust and other impurities, thereby extending the service life of the module. The Fresnel lens group in the top plate 200 of the lens group is used to achieve efficient focusing. The Fresnel lens achieves efficient focusing by dividing the curved surface of a traditional lens into a series of concentric annular teeth. The lenses in the Fresnel lens group are arranged in an array. Sunlight is incident on the surface of the Fresnel lens. After refraction by the tooth structure, the light is concentrated and focused, and a large area of ​​sunlight is concentrated to the light-receiving surface of the battery assembly 400 below. The bottom plate 100 is made of glass, metal and other materials. The frame assembly 300 is preferably formed by integral molding and press molding, and is made of metal, plastic or carbon fiber composite materials. The battery assembly 400 includes multiple single battery modules, and each single battery module is arranged in a one-to-one correspondence with a lens.

[0047] The frame assembly 300 is formed by enclosing a plurality of frames 310. In a specific embodiment, the concentrating photovoltaic module has a parallelogram cavity structure, and the frame assembly 300 includes four frames 310. It is understandable that the number of frames 310 can be adjusted according to actual conditions for concentrating photovoltaic modules of other shapes. A single frame 310 includes a side panel 311, an upper packaging slot 312, a lower packaging slot 313, and an installation slot 314. The side panel 311 extends in the vertical direction and serves as the main support structure of the frame 310; the upper packaging slot 312 is located at the top of the side panel 311, with the slot facing the inside of the side panel 311; the installation slot 314 is located at the bottom of the side panel 311, with the slot facing downward; the lower packaging slot 313 is located on the side of the installation slot 314 facing the inside of the side panel 311, and its slot direction is also facing the inside of the side panel 311. Positioning mounting slots 314 below side panels 311, rather than at the bottom of the baseplate as in conventional structures, avoids adding extra height to the CPV module, minimizing its size. A smaller module size not only reduces production and packaging and transportation costs, but also improves land utilization and reduces construction costs in large-scale power station projects.

[0048] When the concentrating photovoltaic module is installed, the periphery of the lens group top plate 200 is adapted to be inserted into the upper packaging slot 312 of each frame 310, and the periphery of the bottom plate 100 is inserted into the lower packaging slot 313 of each frame 310. Through the close fit between the slots and the periphery of the components, the lens group top plate 200, the bottom plate 100 and the frame assembly 300 are quickly installed and stably connected. In addition, by embedding bolts in the installation slots 314, inserting the screws into the holes reserved on the external module mounting bracket, and tightening the screws to fix the concentrating photovoltaic module. In the length direction of the frame 310, multiple installation slots 314 are arranged at intervals to achieve stable installation of the concentrating photovoltaic module. At the same time, the number and position of the bolts can be flexibly adjusted to adapt to different module mounting bracket structures.

[0049] The frame assembly 300 of this embodiment integrates the upper packaging slot 312, the lower packaging slot 313 and the installation slot 314 into an integrally formed frame 310, which has a compact structure. The height and width of the frame 310 are greatly reduced compared to traditional frames; the integrally formed frame 310 also greatly reduces the assembly gap, improves the assembly efficiency and installation efficiency of the concentrating photovoltaic module, reduces the risk of poor sealing due to complex splicing, and is conducive to achieving a compact structure and miniaturized design of the concentrating photovoltaic module.

[0050] In some specific embodiments, Figure 2 and Figure 3 As shown, the length of the lens assembly top plate 200 is greater than the length of the bottom plate 100, and the width of the lens assembly top plate 200 is greater than the width of the bottom plate 100. The outer sides of the upper packaging slot 312 and the outer sides of the mounting slot 314 are aligned with the outer sides of the side plates 311, and the mounting slot 314 is flush with the lower packaging slot 313.

[0051] In this embodiment, by setting the size of the bottom plate 100 to be smaller than the size of the lens assembly top plate 200, the blank gap between the edge of the bottom plate 100 and the vertical side plate 311 is made larger, so that the installation slot 314 and the lower packaging slot 313 can be flush with each other in the blank gap at the bottom of the side plate. This makes the lens assembly top plate 200 have a larger size, which can increase the light receiving area of ​​a single concentrating photovoltaic module and improve the photoelectric conversion effect of a single concentrating photovoltaic module. On the other hand, it can make the outer contour of the frame assembly 300 more regular (such as Figure 3 and Figure 4 The frame 310 of this embodiment is designed to have a regular outer contour after assembly, without protruding local structures. This enhances the structural strength of the frame assembly 300 and makes it less susceptible to local breakage or deformation when subjected to external forces during transportation and handling.

[0052] In some specific embodiments, Figure 2 、 Figure 3 and Figure 5As shown, the lens group top plate 200 includes a plurality of lenses 210 arranged in an array, and the battery assembly 400 includes a plurality of battery strips 410 arranged at intervals, each of the battery strips 410 includes a circuit board strip 411 and a plurality of single battery modules 412 arranged on the circuit board strip 411; along the edge direction of the concentrating photovoltaic module, the circuit board strip 411 of the outermost battery strip 410 is retracted compared to the outermost lens 210, and the center of each lens 210 is arranged one by one opposite to the center of the light-receiving surface of each single battery module 412, and the width of a single circuit board strip 411 is smaller than the width of a single lens 210.

[0053] In this embodiment, lenses 210 are closely arranged in a matrix, and cell strips 410 are spaced apart in the same direction as the lens 210 array, ensuring that the light-collecting area of ​​each lens 210 precisely corresponds to the underlying single cell module 412. Along the edge of the CPV module, the circuit board strips 411 of the outermost cell strips 410 are retracted inward by a certain distance relative to the outermost lens 210. This retraction distance is adjusted based on the focusing ratio of the lens 210, ensuring that the edge light of the outermost lens 210 is effectively focused on the light-receiving surface of the single cell module 412 of the outermost cell strip.

[0054] The circuit board is designed to have a structure of multiple circuit board strips 411, and the width of a single circuit board strip 411 is made smaller than the width of a single lens 210, so that there are gaps between the multiple circuit board strips 411, and they do not need to be fully spread on the entire base plate 100. On the one hand, the amount of circuit board material used is reduced, thereby reducing the overall weight of the concentrated photovoltaic module, which is convenient for transportation and installation. On the other hand, the circuit board strips 411 provide wiring space for internal circuit connections, and the conductive circuits can directly complete the electrical connection between the battery strips 410 in the gap without extending to the edge area of ​​the base plate 100, effectively avoiding the increase in the lateral size of the concentrated photovoltaic module due to additional wiring space, and further realizing the compactness and miniaturization of the concentrated photovoltaic module structure.

[0055] The geometric center of the lens 210 and the center of the light-receiving surface of the corresponding single cell module 412 can be aligned by conventional positioning devices or optical detection devices, etc., which will not be described in detail in this embodiment. The single cell module 412 of this embodiment can adopt the solar single cell in the prior art, and the present invention does not specifically limit the specific structure of the single cell module 412. During the production process, the single cell module 412 can be first fixed to the designated contact group of the circuit board strip 411 by welding or conductive adhesive, and then the assembled battery strip 410 can be fixed to the bottom plate 100. When the top plate 200 of the lens group is assembled with the frame assembly 300, the positioning function of the card slot is used to quickly achieve precise alignment of the lens 210 and the battery strip 410.

[0056] In some specific embodiments, Figure 4-Figure 6 As shown, the width of the lens 210 is W2, the width of the circuit board strip 411 is W3; the width W1 of the mounting slot 314 is less than (W2-W3) / 2; and the focusing ratio of the lens 210 is greater than or equal to 100. In a preferred embodiment, the focusing ratio of the lens 210 is greater than or equal to 100 and less than or equal to 1000.

[0057] In this embodiment, the focusing ratio of the lens 210 is set to the above range, so that the sunlight is converged to the single battery module 412 through the lens 210 to form a conical light path, and the light concentration is significantly improved, thereby ensuring that the periphery of the bottom plate 100 can be retracted to an appropriate size, providing lateral space for the installation of the card slot 314. Specifically, referring to Figure 4 and Figure 6 The high concentration ratio narrows the angle of light convergence. The point of light from the edge of the lens 210 is limited to the light-receiving surface of the single cell module 412 of the battery strip 410. Therefore, the edge of the base plate 100 does not need to extend to the edge of the lens 210. The distance of its edge retraction can be adjusted according to the concentration ratio, thereby forming a blank area between the edge of the base plate 100 and the side panel 311 to accommodate the mounting slot 314. In addition, the high concentration ratio can reduce the light-receiving area of ​​the single cell module 412, reducing the demand for expensive battery materials (such as gallium arsenide), thereby effectively controlling costs. At the same time, the reduction in the light-receiving area of ​​the single cell module 412 allows for the design of a narrower circuit board strip 411. The narrower circuit board strip 411 creates a larger size difference with the lens 210, reserving more horizontal layout space at the bottom of the side panel 311 for the mounting slot 314, avoiding installation inconvenience or insufficient module structural strength caused by the mounting slot 314 being too narrow.

[0058] In an optional embodiment, the focal length of the lens 210 is less than or equal to 200 mm. Further preferably, the focal length of the lens 210 is greater than or equal to 20 mm and less than or equal to 100 mm. The distance between the lens 210 and the light-receiving surface of the single cell module 412 is the focusing focal length. Setting the lens 210 to the above-mentioned short focal length range can achieve a compact overall structure. The short focal length shortens the required distance between the lens 210 and the light-receiving surface of the single cell module 412, thereby reducing the vertical distance between the top plate 200 and the bottom plate 100 of the lens group, and the height of the frame 310 is reduced. By shortening the longitudinal height of the side plate 311, not only the material usage is reduced, but also the overall strength of the frame 310 is enhanced due to the more uniform distribution of structural stress.

[0059] Based on the coordination requirements of the optical path and structural layout, W1 is set to < (W2 - W3) / 2 to ensure that the edge light of the outermost lens 210 is not completely projected onto the single battery module 412 on the outermost circuit board strip 411 due to the excessive width of the mounting slot 314 during the convergence process. Exemplarily, the width of the upper packaging slot 312 and the lower packaging slot 313 ranges from several millimeters to tens of millimeters, for example, 5 to 12 mm. The width of the mounting slot 314 is slightly wider than that of the upper packaging slot 312 and the lower packaging slot 313, and can be tens of millimeters, for example, 18 mm.

[0060] In some specific embodiments, Figure 7 and Figure 9 As shown, the circuit strip 411 includes a substrate 4111, a first insulating layer 4112, a circuit layer 4113, and a second insulating layer 4114 stacked from bottom to top. The circuit layer 4113 includes a lead-out contact 4113a, a plurality of first contact groups 4113b, and a lead 4113c. The first contact group 4113b includes a first positive contact and a first negative contact. The lead-out contacts 4113a are provided at both ends of the circuit layer 4113. A plurality of first contact groups 4113b are arranged at intervals, and adjacent first contact groups 4113b are connected by leads 4113c; the second insulating layer 4114 covers the leads 4113c, and does not cover the lead-out contacts 4113a and the first contact groups 4113b, and each of the single battery modules 412 is electrically connected to each of the first contact groups 4113b, and the width of the single battery module 412 is less than or equal to the width of the circuit board strip 411.

[0061] In this embodiment, suitable materials for the substrate 4111 and the first / second insulating layers are selected. For example, the substrate material includes epoxy resin fiberglass board, and the insulating layer material includes polyimide, epoxy resin, etc. Conventional processes are used to stack the substrate 4111 and the first insulating layer 4112. Then, photolithography, electroplating, and other processes are used to form the lead contacts 4113a, the first contact group 4113b, and the leads 4113c on the first insulating layer 4112 according to a predetermined design. Finally, a second insulating layer 4114 is applied to the surface of the leads 4113c through coating, curing, and other processes. The second insulating layer 4114 is made of the same or similar material as the first insulating layer 4112, ensuring that the lead contacts and the first contact group 4113b are exposed to facilitate subsequent electrical connections with other components. The individual battery modules 412 are sequentially placed on the corresponding first contact groups 4113b, and the electrodes of the individual battery modules 412 are connected to the first contact groups 4113b of the circuit strips 411, thereby achieving electrical communication between the individual battery modules 412 and the circuit strips 411. This embodiment utilizes the structural design of the battery strips 410, which reduces the installation area and saves materials. The width of the circuit strips 411 only needs to be greater than the width of the individual battery modules 412, which reduces costs. The gaps formed between adjacent circuit strips 411 provide space for internal wiring, contributing to the compactness of the overall structure of the CPV module.

[0062] In some specific embodiments, Figure 2 、 Figure 3 and Figure 5 As shown, the two ends of the circuit strips 411 of each battery strip 410 are set inward compared to the outermost lens 210, and each circuit strip 411 is connected to the lead-out contact 4113a at the end through a conductive circuit 413 to achieve electrical connection between the circuit strips 411, and the edge of the conductive circuit 413 does not exceed the two ends of the circuit strip 411.

[0063] In a specific embodiment, the negative lead-out contacts of the circuit board strips 41 of several battery strips 410 are placed on the same side, and the positive lead-out contacts are placed on the other side, so that a straight conductive line 413 can be used to weld each positive lead-out contact, and a straight conductive line 413 can be used to weld each negative lead-out contact, thereby constructing a complete and easy-to-wire parallel circuit.

[0064] In some specific embodiments, Figure 5 and Figure 9As shown, it also includes a lead-out electrode 414. The base plate 100 is provided with a wire outlet hole 110. The wire outlet hole 110 is located in the area of ​​the base plate 100 between adjacent battery strips 410. One end of the lead-out electrode 414 is electrically connected to the conductive line 413, and the other end passes through the wire outlet hole 110 and extends to the outside of the base plate 100. After being led out, the lead-out electrode 414 is connected to the junction box 120. The junction box 120 is located outside the base plate 100 and can be fixed to the bottom of the base plate 100 by glue. There can be one or more wire outlet holes 110, which are arranged between adjacent battery strips 410 of the base plate 100. Compared with the wire outlet design at the edge of the base plate 100 of the traditional module, this embodiment reduces the size of the frame 310 and improves the light energy utilization rate of the module.

[0065] In some specific embodiments, Figure 4 As shown, the frame assembly 310 further includes a web 315, which is arranged parallel to the inner side of the side panel 311, and a gap is formed between the web 315 and the side panel 311. The upper end of the web 315 is connected to the bottom of the upper packaging slot 312, and the lower end of the web 315 is connected to the top of the installation slot 314 or the top of the lower packaging slot 313. The web 315 and the side panel 311 can be made of the same material, such as metal (such as aluminum alloy) or plastic. The support of the web 315 can enhance the overall structural strength of the frame assembly 310.

[0066] In some specific embodiments, the upper packaging slot 312 is filled with a sealant (not shown in the figure), and the sealant in the upper packaging slot 312 is located between the lens group top plate 200 and the inner wall of the upper packaging slot 312, forming an upper sealing layer that is continuous along the circumference of the upper packaging slot 312; the lower packaging slot 313 is filled with a sealant, and the sealant in the lower packaging slot 313 is located between the bottom plate 100 and the inner wall of the lower packaging slot 313, forming a lower sealing layer that is continuous along the circumference of the lower packaging slot 313. The sealant can be, for example, silicone sealant, which can not only tightly fill the gap between the lens group top plate 200 and the slot, but also maintain elastic buffering when the module is deformed by external force, thereby preventing sealing failure. At the same time, a groove 316 is provided in the upper packaging slot 312 and the lower packaging slot 313. After the sealant is filled, it can be embedded in the groove 316 to improve the adhesion ability and sealing effect of the sealing layer. This embodiment enhances the stability of the overall structure of the concentrating photovoltaic module and extends the service life of the concentrating photovoltaic module through the sealant filling design of the upper and lower slots.

[0067] The concentrating photovoltaic module of the present invention adopts a highly integrated frame structure, and the assembly process is simple. An exemplary assembly process is as follows:

[0068] Battery strip installation and circuit connection: First, use a dispensing device to evenly apply silicone to the battery strip 410 pasting position on the base plate 100. Next, use a positioning template or automated robotic arm to place the battery strip 410 in the preset position and let it cure to firmly adhere the battery strip 410 to the base plate 100. After curing is completed, use the conductive circuit 413 to connect each battery strip 410. The specific connection method can be selected as a series or parallel circuit connection method according to actual needs. Then, pass the lead-out electrode 414 connected to the conductive circuit 413 through the outlet hole 110 on the base plate 100, reserved for subsequent connection.

[0069] Positioning the optical components: Place the bottom plate 100, with the battery strip 410 mounted, parallel to the lens assembly top plate 200, with the battery strip 410 attached facing upward and the Fresnel lens ring of the lens assembly top plate 200 facing downward. Using a positioning jig and a rangefinder sensor, adjust the distance between the lens 210 and the light-receiving surface of the battery strip 410 to achieve the designed focusing focal length.

[0070] Frame Assembly: Prepare four pre-fabricated frames 310. Evenly apply encapsulating silicone sealant to the upper and lower sealing slots 312 and 313 of the frames 310. Align the lens assembly top plate 200 with the upper sealing slots 312 and the bottom plate 100 with the lower sealing slots 313. Using automated pressing equipment or manual assistance, smoothly insert the lens assembly top plate 200 and bottom plate 100 into the slots. After insertion, clean any excess silicone sealant and wait for the silicone sealant to cure.

[0071] Junction box installation and potting: Install junction box 120 at the corresponding position outside base plate 100. Connect the lead-out electrodes 414 that previously passed through outlet holes 110 to the terminals inside junction box 120. Once connected, waterproof sealant is poured into the cavity of junction box 120 to ensure a fully sealed environment inside junction box 120, completing the assembly of the CPV module.

[0072] Obviously, the embodiments described above are only some embodiments of the present invention, rather than all embodiments. The preferred embodiments of the present invention are given in the accompanying drawings, but they do not limit the patent scope of the present invention. The present invention can be implemented in many different forms. On the contrary, the purpose of providing these embodiments is to make the understanding of the disclosure of the present invention more thorough and comprehensive. Although the present invention has been described in detail with reference to the aforementioned embodiments, for those skilled in the art, it is still possible to modify the technical solutions described in the aforementioned specific embodiments, or to make equivalent replacements for some of the technical features therein. Any equivalent structure made using the contents of the present invention specification and drawings, directly or indirectly used in other related technical fields, is also within the scope of patent protection of the present invention.

Claims

1. A concentrated photovoltaic module, characterized in that: It includes a bottom plate, a lens group top plate, a frame assembly and a battery assembly, wherein the lens group top plate, the bottom plate and the frame assembly enclose a closed space, and the battery assembly is located in the closed space; The frame assembly is formed by enclosing a plurality of frames, wherein a single frame includes a side panel, an upper packaging slot, a lower packaging slot, and a mounting slot. The side panel extends in a vertical direction, the upper packaging slot is located at the top of the side panel, the mounting slot is located at the bottom of the side panel with the slot facing downward, and the lower packaging slot is located on the side of the mounting slot facing the inner side of the side panel, and the slot direction of the lower packaging slot is consistent with the slot direction of the upper packaging slot. The periphery of the lens group top plate is inserted into the upper packaging slot of each frame, and the periphery of the bottom plate is inserted into the lower packaging slot of each frame; the battery assembly is arranged on the bottom plate.

2. The concentrated photovoltaic module according to claim 1, wherein: The length of the top plate of the lens group is greater than the length of the bottom plate, and the width of the top plate of the lens group is greater than the width of the bottom plate.

3. The concentrated photovoltaic module according to claim 1, wherein: The outer sides of the upper packaging slot and the outer sides of the installation slot are aligned with the outer sides of the side panels, and the installation slot is flush with the lower packaging slot.

4. The concentrated photovoltaic module according to claim 1, wherein: The top plate of the lens group includes a plurality of lenses arranged in an array, and the battery assembly includes a plurality of battery strips arranged at intervals, each of the battery strips includes a circuit board strip and a plurality of single battery modules arranged on the circuit board strip; along the edge direction of the concentrating photovoltaic module, the circuit board strip of the outermost battery strip is retracted compared to the outermost lens, the center of each lens is arranged one by one opposite to the center of the light-receiving surface of each single battery module, and the width of a single circuit board strip is smaller than the width of a single lens.

5. The concentrated photovoltaic module according to claim 4, wherein: The width of the lens is W2, and the width of the circuit board strip is W3; the width W1 of the mounting slot is less than (W2-W3) / 2; and the focusing ratio of the lens is greater than or equal to 100.

6. The concentrated photovoltaic module according to claim 4, wherein: The circuit board strip includes a substrate, a first insulating layer, a circuit layer and a second insulating layer stacked from bottom to top. The circuit layer includes lead-out contacts, a plurality of first contact groups and leads. The first contact group includes a first positive contact and a first negative contact. Lead-out contacts are set at both ends of the circuit layer, and a plurality of first contact groups arranged at intervals are set in the middle of the circuit layer. Adjacent first contact groups are connected by leads. The second insulating layer covers the leads but does not cover the lead-out contacts and the first contact groups. Each of the single battery modules is electrically connected to each of the first contact groups. The width of the single battery module is less than or equal to the width of the circuit board strip.

7. The concentrated photovoltaic module according to claim 6, wherein: The ends of the circuit strips of each battery strip are set inward compared to the outermost lens, and the lead-out contacts at the ends of each circuit strip are connected by conductive circuits to achieve electrical connection between the circuit strips, and the edges of the conductive circuits do not exceed the ends of the circuit strips.

8. The concentrated photovoltaic module according to claim 7, wherein: It also includes a lead-out electrode. The bottom plate is provided with a wire hole, and the wire hole is located in the bottom plate area between adjacent battery strips. One end of the lead-out electrode is electrically connected to the conductive circuit, and the other end passes through the wire hole and extends to the outside of the bottom plate.

9. The concentrated photovoltaic module according to claim 1, wherein: It also includes a web, which is arranged parallel to the inner side of the side plate, and a gap is formed between the web and the side plate. The upper end of the web is connected to the bottom of the upper packaging slot, and the lower end of the web is connected to the top of the installation slot or the top of the lower packaging slot.

10. The concentrated photovoltaic module according to claim 1, wherein: The upper packaging slot is filled with sealant, and the sealant in the upper packaging slot is located between the top plate of the lens group and the inner wall of the upper packaging slot, forming an upper sealing layer that is continuous along the circumference of the upper packaging slot; the lower packaging slot is filled with sealant, and the sealant in the lower packaging slot is located between the bottom plate and the inner wall of the lower packaging slot, forming a lower sealing layer that is continuous along the circumference of the lower packaging slot.

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