Connecting structure of photovoltaic panel and heat collector

Abstract

The utility model provides a connecting structure of a photovoltaic panel and a heat collector, which enables the photovoltaic panel and the heat collector to be independently replaced or disassembled, assembled and maintained, improves the repeated utilization rate of the photovoltaic panel and the heat collector, reduces the cost and saves resources. The system comprises: a photovoltaic panel; the frame comprises an upper-layer press-fitting space and a lower-layer arrangement space, and positioning holes are formed in the bottom edge of the lower-layer arrangement space; the heat collector is a micro-channel flat tube assembly and comprises a micro-channel flat tube; the heat-conducting silicone grease layer is obtained by coating a high-heat-conducting insulating organic silicon material; each high-strength pressing strip comprises a frame connecting strip and protruding pressing ends, the portions, without the protruding pressing ends, of the two ends of the frame connecting strip in the length direction form fixed connection position areas, fixed positioning holes are formed in the fixed connection position areas, and the protruding pressing ends are arranged at the positions, except the two ends, of the frame connecting strip in the length direction; and a corresponding fastening assembly.

Description

Technical Field

[0001] This utility model relates to the technical field of photovoltaic thermal collectors, specifically a connection structure between a photovoltaic panel and a collector. Background Technology

[0002] A photovoltaic thermal (PVT) collector refers to a structure in which a liquid working fluid flowing within the collector collects and removes the waste heat generated during the operation of photovoltaic modules, thereby reducing the operating temperature of the photovoltaic modules and improving power generation efficiency. In existing PVT collectors, the photovoltaic panels and collectors are bonded together using EVA (ethylene glycol monocarbonate). This ensures that the waste heat from the photovoltaic panels is reliably absorbed by the collector after being conducted through the EVA adhesive. While the EVA bond is strong and reliable, once cured, the PVT collector cannot be disassembled without damaging the photovoltaic panels and collector. Therefore, if any component in this structure fails, the entire system cannot function properly and must be scrapped. This makes it impossible to replace or repair components in existing PVT collectors, resulting in a waste of cost and resources. Utility Model Content

[0003] To address the aforementioned issues, this utility model provides a connection structure for photovoltaic panels and solar collectors, which allows photovoltaic panels and solar collectors to be replaced or disassembled and repaired individually, thereby improving the reusability of photovoltaic panels and solar collectors, reducing costs, and saving resources.

[0004] A connection structure for a photovoltaic panel and a solar collector, characterized in that it comprises:

[0005] Photovoltaic panels;

[0006] The frame includes an upper pressing space and a lower arrangement space, and the bottom edge of the lower arrangement space is provided with positioning holes;

[0007] A solar collector, which is a microchannel flat tube assembly, comprising a microchannel flat tube;

[0008] The thermally conductive silicone grease layer is obtained by coating a high thermal conductivity insulating silicone material. The high thermal conductivity insulating silicone material maintains its paste-like form and does not harden over a long period of time at temperatures ranging from -60℃ to +230℃.

[0009] Several high-strength pressure strips include a frame connecting strip and a raised pressure end. The portions of the frame connecting strip without raised pressure ends at both ends along the length direction form a fixed connection position area. The fixed connection position area is provided with a fixed positioning hole. The frame connecting strip is provided with raised pressure ends excluding the two ends along the length direction.

[0010] and the corresponding fastening components;

[0011] The corresponding side of the photovoltaic panel is embedded in the upper pressing space of the frame. The exposed surface layer of the lower surface of the photovoltaic panel is coated with the thermally conductive silicone grease layer. The microchannel flat tube is recessed relative to the photovoltaic panel area, and the upper surface of the microchannel flat tube is arranged in close contact with the lower surface of the thermally conductive silicone grease layer. High-strength pressure strips are arranged in parallel at intervals. The lower surface of the frame connecting strip of each high-strength pressure strip is in close contact with the upper surface of the bottom edge. The corresponding fastening components are fixed to the high-strength pressure strip and the bottom edge of the frame through positioning holes and fixed positioning holes. The top of the protruding pressure end presses against the lower surface of the microchannel flat tube, so that the upper surface of the microchannel flat tube is in close contact with the lower surface of the thermally conductive silicone grease layer.

[0012] Its further features are:

[0013] When the raised pressure end is a raised pressure strip perpendicular to the frame connecting strip, the entire high-strength pressure strip is a T-shaped pressure strip;

[0014] When the protruding pressure end includes a connecting strip and a flat pressure strip, the flat pressure strip is arranged parallel to the frame connecting strip and connected by the connecting strip, and the entire high-strength pressure strip becomes an I-shaped pressure strip.

[0015] The fastening components include bolts and nuts. Each high-strength pressure strip has two sets of fastening components. The high-strength pressure strip is placed above the bottom edge along the gap of the lower layer arrangement space. Then, the positioning hole and the fixed positioning hole are aligned and set. Then, the bolt passes through the fixed positioning hole and the positioning hole in sequence and then the nut is fixed. The nut is pressed onto the lower surface of the bottom edge.

[0016] The length of the high-strength pressure strip is slightly shorter than the distance between the uprights of a pair of long sides of the frame, ensuring that the two ends of the high-strength pressure strip are respectively inserted into the lower arrangement space in the length deflection state, and then aligned and assembled.

[0017] The positioning hole is a long slot hole set parallel to the length direction of the high-strength pressure strip. The diameter of the nut covers the length of the long slot hole, which allows for quick and reliable positioning even when there is a slight deviation in positioning.

[0018] The lower surfaces of both ends of the frame connecting strip of the high-strength pressure strip are also provided with flexible pads. The flexible pads are elastic, ensuring that the protruding pressure ends of the high-strength pressure strip are tightly attached to the lower surface of the microchannel flat tube, thereby making the upper surface of the microchannel flat tube tightly attached to the lower surface of the thermally conductive silicone grease layer. The flexible pads also ensure that the high-strength pressure strip and the frame are not easily worn during fastening, ensuring a reliable positioning connection.

[0019] With the structure of this invention, reliable heat exchange occurs between the photovoltaic panel and the microchannel flat tube via a thermally conductive silicone grease layer. This grease layer maintains its paste-like consistency and does not harden over a long period at temperatures ranging from -60℃ to +230℃. The microchannel flat tube is firmly held in place by a raised pressure end, ensuring stable and reliable adhesion between the thermally conductive silicone grease layer and the photovoltaic panel / microchannel flat tube. When the photovoltaic panel, microchannel flat tube, or other components malfunction or are damaged, the fastening components can be disassembled, separating the photovoltaic panel and microchannel flat tube assembly. The adhesion of the thermally conductive silicone grease layer will not damage the structure of any component. After replacing or repairing the photovoltaic panel, microchannel flat tube, or other components, the thermally conductive silicone grease layer is applied again to the bottom of the photovoltaic panel and smoothed out. The microchannel flat tube assembly is then reliably assembled using a high-strength pressure strip, ensuring the microchannel flat tube adheres tightly to the lower surface of the thermally conductive silicone grease layer. This allows the photovoltaic panel and collector to be replaced or disassembled and repaired individually, improving their reusability, reducing costs, and saving resources. Attached Figure Description

[0020] Figure 1 This is an assembly diagram of a specific embodiment of the present invention;

[0021] Figure 2 This is an assembly diagram of a specific embodiment two of the present invention;

[0022] Figure 3 This is an assembly diagram of a specific embodiment three of the present invention;

[0023] The names corresponding to the serial numbers in the diagram are as follows:

[0024] Photovoltaic panel 10, frame 20, upper pressing space 21, lower arrangement space 22, bottom edge 221, positioning hole 222, collector 30, microchannel flat tube 31, thermally conductive silicone grease layer 40, high-strength pressure strip 50, frame connecting strip 51, fixed positioning hole 511, raised pressure end 52, fastening component 60, bolt 61, nut 62, flexible pad 70. Detailed Implementation

[0025] A connection structure between a photovoltaic panel and a solar collector, see Figures 1-3 It includes: a photovoltaic panel 10, a frame 20, a collector 30, a thermally conductive silicone grease layer 40, several high-strength pressure strips 50, and fastening components 60;

[0026] The frame 20 includes an upper pressing space 21 and a lower arrangement space 22. A positioning hole 222 is provided on the bottom edge 221 of the lower arrangement space 22.

[0027] The solar collector 30 is a microchannel flat tube assembly, which includes a microchannel flat tube 31;

[0028] The thermally conductive silicone grease layer 40 is obtained by coating with a high thermal conductivity insulating silicone material. The high thermal conductivity insulating silicone material maintains its paste-like form and does not harden over a long period of time at a temperature of -60℃ to +230℃.

[0029] Each high-strength pressure strip 50 includes a frame connecting strip 51 and a raised pressure end. The raised pressure ends at both ends of the frame connecting strip 51 in the length direction form a fixed connection position area. A fixed positioning hole 511 is provided in the fixed connection position area. A raised pressure end 52 is provided in the length direction of the frame connecting strip 51 excluding the two ends.

[0030] The photovoltaic panel 10 is embedded in the upper pressing space 21 of the frame on the corresponding side. The exposed surface layer of the lower surface of the photovoltaic panel 10 is coated with a thermally conductive silicone grease layer 40. The microchannel flat tube 31 is recessed relative to the surface area of ​​the photovoltaic panel 10, and the upper surface of the microchannel flat tube 31 is arranged in close contact with the lower surface of the thermally conductive silicone grease layer 40. High-strength pressure strips 50 are arranged in parallel at intervals. The lower surface of the frame connecting strip 51 of each high-strength pressure strip 50 is close to the upper surface of the bottom edge 222. The corresponding fastening component 60 is fixed to the high-strength pressure strip 50 and the bottom edge 221 of the frame 20 through the positioning hole 222 and the fixing positioning hole 511. The protruding pressure end presses against the lower surface of the microchannel flat tube 31, so that the upper surface of the microchannel flat tube 31 is in close contact with the lower surface of the thermally conductive silicone grease layer 40.

[0031] In specific embodiments one to three, the fastening assembly 60 includes bolts 61 and nuts 62. Each high-strength pressure strip 50 has two sets of fastening assemblies 60. The high-strength pressure strip 50 is placed above the bottom edge 222 along the gap of the lower arrangement space 22. Then, the positioning hole 222 and the fixed positioning hole 511 are aligned and set. Then, the bolt 61 passes through the fixed positioning hole 511 and the positioning hole 222 in sequence and then the nut 62 is fixedly fitted. The nut 62 is pressed onto the lower surface of the bottom edge 221.

[0032] In specific embodiments one to three, the length of the high-strength pressure strip 50 is slightly shorter than the distance between the uprights of a pair of long sides of the frame 20, ensuring that the two ends of the high-strength pressure strip 50 are respectively inserted into the lower arrangement space 22 in the length deflection state, and then aligned and assembled.

[0033] In the specific embodiment one, see Figure 1 The positioning hole 222 is a round hole with the same diameter as the fixed positioning hole 511, and the lower surface of the frame connecting strip 51 of the high-strength pressure strip 50 is set close to the upper surface of the bottom edge 222.

[0034] Specific embodiments two and three are described below. Figure 2 Positioning hole 222 is a long slot hole set parallel to the length direction of high-strength pressure strip 50. The diameter of nut 62 covers the length of the long slot hole, which allows for quick and reliable positioning even when there is a slight deviation in positioning.

[0035] The lower surfaces of both ends of the frame connecting strip 51 of the high-strength pressure strip 50 are also provided with flexible pads 70. The flexible pads 70 are elastic, ensuring that the protruding pressure end 52 of the high-strength pressure strip 50 is tightly attached to the lower surface of the microchannel flat tube 31, thereby making the upper surface of the microchannel flat tube 31 tightly attached to the lower surface of the thermally conductive silicone grease layer 40. The flexible pads 70 ensure that the high-strength pressure strip 50 and the frame 20 are not easily worn during fastening, ensuring a reliable positioning connection.

[0036] In specific embodiments one and two, when the raised pressure end is a raised pressure strip 52 perpendicular to the frame connecting strip, the entire high-strength pressure strip is a T-shaped pressure strip.

[0037] In the third specific embodiment, when the protruding pressure end includes a connecting strip 53 and a flat pressure strip 54, the flat pressure strip 54 is arranged parallel to the frame connecting strip 51 and connected by the connecting strip 53, and the entire high-strength pressure strip becomes an I-shaped pressure strip.

[0038] The height of the raised end of the high-strength pressure strip 50 ensures that the upper surface of the microchannel flat tube 31 is in close contact with the lower surface of the thermally conductive silicone grease layer 40.

[0039] Its working principle is as follows: Reliable heat exchange occurs between the photovoltaic panel and the microchannel flat tube via a thermally conductive silicone grease layer. This grease layer maintains its paste-like form and does not harden over a long period at temperatures ranging from -60℃ to +230℃. The microchannel flat tube is firmly held in place by a raised pressure end, ensuring stable and reliable adhesion between the thermally conductive silicone grease layer and the photovoltaic panel / microchannel flat tube. When the photovoltaic panel, microchannel flat tube, or other components malfunction or are damaged, the fastening components are removed, separating the photovoltaic panel and microchannel flat tube assembly. The adhesion of the thermally conductive silicone grease layer will not damage the structure of any component. After replacing or repairing the photovoltaic panel, microchannel flat tube, or other components, the thermally conductive silicone grease layer is applied again to the bottom of the photovoltaic panel and smoothed out. The microchannel flat tube assembly is then reliably assembled using a high-strength pressure strip, ensuring the microchannel flat tube adheres tightly to the lower surface of the thermally conductive silicone grease layer. This allows the photovoltaic panel and collector to be replaced or disassembled and repaired individually, improving their reusability, reducing costs, and saving resources.

[0040] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within this invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

[0041] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A connection structure of a photovoltaic panel and a collector, characterized by, It comprises: a photovoltaic panel; a frame comprising an upper layer mounting space and a lower layer arrangement space, the lower layer arrangement space being provided with a positioning hole on the bottom edge thereof; a heat collector which is a micro-channel flat tube assembly comprising a micro-channel flat tube; a heat-conducting silicone grease layer obtained by coating with a high-thermal-conductivity insulating silicone material which remains in a paste form and does not solidify during long-term use at a temperature of -60°C to +230°C; a plurality of high-strength pressing strips comprising a frame connecting strip, the non-protruding pressing end portions of the frame connecting strip at the lengthwise ends thereof forming a fixed position area, the fixed position area being provided with a fixed positioning hole, and the frame connecting strip being provided with a protruding pressing end at a position other than the two ends thereof in the lengthwise direction; and a corresponding fastening assembly; the corresponding side of the photovoltaic panel is embedded in the upper layer mounting space of the frame, the exposed surface layer of the lower surface of the photovoltaic panel is coated with the heat-conducting silicone grease layer, the micro-channel flat tube is arranged in a recessed manner with respect to the surface area of the photovoltaic panel and the upper surface of the micro-channel flat tube is in close contact with the lower surface of the heat-conducting silicone grease layer, the high-strength pressing strips are arranged in parallel and at intervals, the lower surface of the frame connecting strip of each high-strength pressing strip is in close contact with the upper surface of the bottom edge, the corresponding fastening assembly is used to fix the high-strength pressing strip and the bottom edge of the frame through the positioning hole and the fixed positioning hole, and the top of the protruding pressing end abuts against the lower surface of the micro-channel flat tube so that the upper surface of the micro-channel flat tube is in close contact with the lower surface of the heat-conducting silicone grease layer.

2. The connection structure of a photovoltaic panel and a collector according to claim 1, characterized in that: When the protruding pressing end is perpendicular to the frame connecting strip, the entire high-strength pressing strip is a T-shaped pressing strip.

3. The connecting structure of a photovoltaic panel and a collector according to claim 1, characterized in that: When the protruding pressing end comprises a connecting strip and a planar pressing strip, the planar pressing strip is arranged in parallel to the frame connecting strip and connected through the connecting strip, and the entire high-strength pressing strip becomes a H-shaped pressing strip.

4. The structure of claim 1, wherein: The fastening assembly comprises a bolt and a nut, each high-strength pressing strip is provided with two sets of fastening assemblies, the high-strength pressing strip is arranged above the bottom edge along the gap of the lower layer arrangement space, then the positioning hole and the fixed positioning hole are arranged in position, then the bolt is sequentially inserted through the fixed positioning hole and the positioning hole and is fixedly sleeved with the nut, and the nut is press-fitted to the lower surface of the bottom edge.

5. The photovoltaic panel and collector connection structure according to claim 1, characterized in that: The length of the high-strength pressing strip is slightly shorter than the distance between the vertical plates of the pair of long edges of the frame.

6. The photovoltaic panel and collector connection structure of claim 4, wherein: The positioning hole is a long slot hole arranged in parallel to the lengthwise direction of the high-strength pressing strip, and the diameter of the nut covers the length of the long slot hole.

7. The photovoltaic panel and collector connection structure of claim 1, wherein: The lower surface of the frame connecting strip at the two ends of the high-strength pressing strip is further provided with a flexible pad layer.

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