A pvt plate core that is easy to assemble on site

Abstract

The utility model discloses a kind of PVT plate core convenient to field assembly, including photovoltaic panel, plate core and plate core batten, photovoltaic panel edge is surrounded with the frame for clamping photovoltaic panel, photovoltaic panel is fixedly connected in the frame groove of frame, plate core includes heat-absorbing plate and runner, heat-absorbing plate back and runner are fixedly connected, heat-absorbing plate back and runner outer surface are evenly coated with aerogel coating, aerogel coating thickness is greater than 2mm, plate core is placed in frame as a whole, so that heat-absorbing plate upper surface is towards photovoltaic panel lower surface, multiple plate core battens are equipped in frame, plate core batten both ends are inserted in frame groove, the side of plate core batten and runner are in contact with pressure, heat-absorbing plate upper surface and photovoltaic panel lower surface are in close contact by plate core batten. use the PVT plate core of the utility model, convenient transportation, improve installation efficiency, reduce the difficulty of photovoltaic system reconstruction.

Description

Technical Field

[0001] This utility model relates to the field of photovoltaic and photothermal technology, specifically to a PVT core that is easy to assemble on-site. Background Technology

[0002] With the development of integrated solar energy utilization technology, PVT panels are in high demand in the field of upgrading existing photovoltaic systems because they can simultaneously achieve photovoltaic power generation and photothermal conversion, and can improve power generation efficiency by cooling the photovoltaic panels. Especially for users who have already built photovoltaic power plants, adding photothermal functions to meet hot water supply needs in limited spaces has become an emerging market trend.

[0003] However, existing PVT panels generally adopt a factory-prefabrication model, which has the following key drawbacks:

[0004] 1. Incompatible with existing photovoltaic system retrofits: Traditional PVT panels are non-removable integral structures, making it difficult to install them on the back of already installed photovoltaic modules. This results in the need to remove the original system for retrofits, which is costly.

[0005] 2. Low transportation and installation efficiency: The integral core panel is bulky, resulting in high transportation costs; on-site installation requires specialized equipment and the installation process is complex, especially for large-scale power plant renovations, which presents construction difficulties.

[0006] 3. Insufficient thermal conductivity and insulation structure: The existing core heat absorber and photovoltaic backsheet often have poor contact, resulting in low thermal conductivity and lack of lightweight and high-efficiency insulation layer, leading to serious heat loss.

[0007] 4. Poor compatibility of flow channels: The main and branch pipes of the flow channels lack standardized on-site connection design. When splicing multiple plates, the pipe connection accuracy is low, which can easily lead to media leakage or uneven flow resistance.

[0008] Therefore, it is necessary to provide a PVT core that is easy to assemble on-site to solve the above-mentioned technical problems. Utility Model Content

[0009] The purpose of this invention is to address the shortcomings of existing technologies by providing a PVT core that is easy to assemble on-site.

[0010] To achieve the above objectives, the technical solution adopted by this utility model is as follows:

[0011] A PVT core that is easy to assemble on-site includes a photovoltaic panel, a core, and core strips. The photovoltaic panel is surrounded by a frame for clamping the photovoltaic panel. The photovoltaic panel is fixed in the frame groove of the frame. The core includes a heat-absorbing plate and a flow channel. The back of the heat-absorbing plate is fixed to the flow channel. The back of the heat-absorbing plate and the outer surface of the flow channel are uniformly coated with an aerogel coating with a thickness greater than 2 mm. The core is placed inside the frame with the upper surface of the heat-absorbing plate facing the lower surface of the photovoltaic panel. Multiple core strips are provided inside the frame. The two ends of the core strips are inserted into the frame groove. The sides of the core strips are in abutting contact with the flow channel. The core strips ensure that the upper surface of the heat-absorbing plate is in close contact with the lower surface of the photovoltaic panel.

[0012] Preferably, the heat absorption plate and the flow channel are connected and fixed by an Ω-shaped pressure strip, which is a thin aluminum plate.

[0013] Preferably, the flow channel is an H-shaped flow channel, including a main pipe and branch pipes. Multiple branch pipes are fixed between the two main pipes, and both ends of the branch pipes are connected to the main pipes. The two ends of the main pipes are bent away from the photovoltaic panel, so that the two ends of the main pipes extend beyond the back surface of the frame. It should be further noted that the two main pipes are a circulating liquid inlet main pipe and a circulating liquid outlet main pipe, respectively. The circulating liquid inlet main pipe has liquid inlet ports at both ends, and the circulating liquid outlet main pipe has liquid outlet ports at both ends. Extending the liquid inlet ports of the circulating liquid inlet main pipe and the liquid outlet ports of the circulating liquid outlet main pipe to the outside of the frame facilitates pipe connection.

[0014] Preferably, the flow channel is an H-shaped flow channel, including a main pipe and branch pipes. Multiple branch pipes are fixed between the two main pipes, and both ends of the branch pipes are connected to the main pipes. The ends of the branch pipes are bent away from the photovoltaic panel, so that the main pipes located at both ends of the branch pipes extend beyond the back surface of the frame. It should be further noted that the two main pipes are a circulating liquid inlet main pipe and a circulating liquid outlet main pipe, and the circulating liquid inlet main pipe and the circulating liquid outlet main pipe are extended to the outside of the frame to facilitate pipe connection.

[0015] Preferably, the flow channel includes two main pipes, multiple branch pipes, and one manifold. The two main pipes are arranged on the same side, and multiple branch pipes are fixedly connected between the two main pipes and the manifold. One end of each branch pipe is connected to a main pipe, and the other end is connected to the manifold. The end of the branch pipe connected to the main pipe is bent away from the photovoltaic panel, so that the two main pipes on the same side extend beyond the back surface of the frame. It should be further noted that the two main pipes are a circulating liquid inlet pipe and a circulating liquid outlet pipe, respectively, and the circulating liquid inlet pipe and the circulating liquid outlet pipe are extended to the outside of the frame to facilitate pipe connection.

[0016] Preferably, the flow channel is an S-shaped flow channel, with a circulation inlet and a circulation outlet at each end.

[0017] Preferably, the back of the photovoltaic panel has two core panels, each core panel including a heat absorption plate and a flow channel, wherein the flow channel is an H-shaped flow channel or an S-shaped flow channel.

[0018] Preferably, the core plate pressure strip has a U-shaped cross-section, including a base plate and two vertical plates. The tops of the two vertical plates have multiple symmetrically arranged tube clamping ports along their length. Each tube clamping port corresponds to a branch pipe of the flow channel and is crimped and fixed to the branch pipe. The base plate has connecting sections extending along its length at both ends, with connecting holes on these sections. It should be further noted that the core plate pressure strip limits the spacing between the branch pipes through the tube clamping ports, and screws are used to fix the core plate pressure strip to the frame through the connecting holes. During assembly, the core plate pressure strip can be arranged horizontally, vertically, or both horizontally and vertically simultaneously.

[0019] Preferably, the heat absorber plate has curved grooves corresponding to the branch pipes, with the branch pipes placed inside the curved grooves and the convex surface of the curved grooves facing the photovoltaic panel. It should be further noted that when the core strip presses against the flow channel, the flow channel also applies pressure to the curved grooves of the heat absorber plate, causing the convex surface of the curved grooves to further contact the photovoltaic panel, thereby improving thermal conductivity.

[0020] Preferably, thermally conductive silicone grease or thermally conductive adhesive is applied between the back of the photovoltaic panel and the heat absorber. It should be further noted that applying thermally conductive silicone grease or thermally conductive adhesive can increase thermal conductivity and improve heat collection efficiency.

[0021] Compared with the prior art, this utility model has the following advantages:

[0022] 1. The combination structure of independent core and core strip allows for on-site assembly of the core and photovoltaic panel, reducing transportation difficulties and the cost of later modification.

[0023] 2. By extending the main pipe to the outside of the frame at both ends or the entire main pipe, the difficulty of pipe connection when splicing multiple panels is reduced, and the installation efficiency is improved.

[0024] 3. The core strip not only further reduces the distance between the photovoltaic panel and the heat absorber, improving heat conduction efficiency, but also precisely fixes the spacing of the branch pipes, preventing channel displacement. Furthermore, the core strip can achieve various installation methods depending on different channel layouts. Attached Figure Description

[0025] Figure 1 This is a schematic diagram of the structure of Example 1;

[0026] Figure 2 yes Figure 1 Sectional view at point AA;

[0027] Figure 3 yes Figure 1 Sectional view at point BB;

[0028] Figure 4 yes Figure 1 Sectional view at CC;

[0029] Figure 5 This is the front view of the core strip;

[0030] Figure 6 These are the top view and side sectional view of the core strip;

[0031] Figure 7 This is a top view of the flow channel in Example 3;

[0032] Figure 8 This is a side view of the flow channel in Example 3;

[0033] Figure 9 This is the front view of the supervisor in Embodiment 3;

[0034] Figure 10 This is a top view of the flow channel in Example 4;

[0035] Figure 11 This is a side view of the flow channel in Example 4;

[0036] Figure 12 This is a top view of the flow channel in Example 5;

[0037] Figure 13 This is a top view of the H-shaped flow channel used in Example 6;

[0038] Figure 14 yes Figure 13 Side view;

[0039] Figure 15 This is a top view of the S-shaped flow channel used in Example 6;

[0040] Figure 16 This is a top view of a heat absorber plate with curved grooves;

[0041] Among them, 1-photovoltaic panel, 2-core strip, 201-pipe clamp, 202-connecting section, 203-base plate, 204-vertical plate, 3-frame, 4-heat absorber plate, 401-curved groove, 5-main pipe, 501-circulating liquid inlet main pipe, 502-circulating liquid outlet main pipe, 6-branch pipe, 7-aerogel coating, 8-thermal conductive adhesive, 9-manifold. Detailed Implementation

[0042] The present invention will be further illustrated below with reference to the accompanying drawings and specific embodiments. It should be understood that these embodiments are only for illustrating the present invention and not for limiting the scope of the present invention. After reading the present invention, any modifications of the present invention in various equivalent forms by those skilled in the art will fall within the scope defined by the appended claims.

[0043] In this utility model, unless otherwise explicitly specified and limited, the terms "installation", "setting", "connection", "fixed connection", etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal connection of two components or the interaction between two components. Unless otherwise explicitly limited, those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0044] In this utility model, terms such as "upper", "lower", "bottom", and "top" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only used to facilitate the description of the structural relationship between the various components or elements of this utility model and do not specifically refer to any component or element in this utility model. They should not be construed as limiting this utility model.

[0045] Example 1

[0046] like Figures 1 to 6 As shown, a PVT panel core that is easy to assemble on-site includes a photovoltaic panel 1, a panel core, and a panel core retaining strip 2. A frame 3 surrounds the edge of the photovoltaic panel for clamping it. The photovoltaic panel is fixedly installed in the frame groove of the frame. The panel core includes a heat-absorbing plate 4 and flow channels. The flow channels are H-shaped and include a main pipe 5 and branch pipes 6. The two main pipes are a circulating liquid inlet main pipe and a circulating liquid outlet main pipe, respectively. The circulating liquid inlet main pipe has inlet ports at both ends, and the circulating liquid outlet main pipe has outlet ports at both ends. Multiple branch pipes are sealed and welded between the two main pipes. The two ends of the branch pipes are connected to the main pipes, and the two ends of the branch pipes are bent away from the photovoltaic panel, so that the main pipes located at both ends of the branch pipes extend beyond the back surface of the frame, facilitating pipe connection. The back of the heat-absorbing plate is fixed to the flow channels by laser welding.

[0047] The back of the heat absorber plate and the outer surface of the flow channel are uniformly coated with an aerogel coating 7. The aerogel coating is thicker than 2mm. Compared with the traditional insulation layer structure, directly spraying the aerogel layer not only improves the insulation effect, but also reduces the structural weight.

[0048] During assembly, the core plate is placed inside the frame, with the upper surface of the heat absorber plate facing the lower surface of the photovoltaic panel. Thermally conductive adhesive 8 is applied between the back of the photovoltaic panel and the heat absorber plate to increase the thermal conductivity between the photovoltaic panel and the heat absorber plate. Multiple core plate pressure strips 2 are installed inside the frame, with both ends of the core plate pressure strips inserted into the frame grooves. The cross-section of the core plate pressure strip is U-shaped, including a base plate 203 and two vertical plates 204. Multiple symmetrically arranged tube clamping ports 201 are opened at the top of the two vertical plates along the length direction. The tube clamping ports correspond one-to-one with the branch pipes of the flow channel and are pressed and fixed to the branch pipes. The bottom plate has connecting sections 202 extending in the length direction at both ends. Connecting holes are opened on the connecting sections. The core plate pressure strips are fixed to the frame by screws passing through the connecting holes. The core plate pressure strips ensure that the upper surface of the heat absorber plate is in close contact with the lower surface of the photovoltaic panel.

[0049] Example 2

[0050] Preferably, the heat absorption plate and the flow channel are connected and fixed by an Ω-shaped pressure strip, which is a thin aluminum plate.

[0051] Example 3

[0052] like Figures 7 to 9 As shown, the flow channel is an H-shaped flow channel, including a main pipe 5 and branch pipes 6. The two main pipes are a circulating liquid inlet main pipe 501 and a circulating liquid outlet main pipe 502. The circulating liquid inlet main pipe has liquid inlet ports at both ends, and the circulating liquid outlet main pipe has liquid outlet ports at both ends. Multiple branch pipes are sealed and welded between the two main pipes. The two ends of the branch pipes are connected to the main pipes respectively. The two ends of the main pipes are bent away from the photovoltaic panel, so that the two ends of the main pipes extend to the outside of the frame, which facilitates the connection of the pipeline.

[0053] Example 4

[0054] like Figures 10 to 11 As shown, the flow channel includes two main pipes 5, multiple branch pipes 6, and a manifold 9. The two main pipes are a circulating liquid inlet main pipe 501 and a circulating liquid outlet main pipe 502, which are set on the same side. Multiple branch pipes are sealed and welded between the two main pipes and the manifold. One end of the branch pipe is connected to the main pipe, and the other end is connected to the manifold. The end of the branch pipe connected to the main pipe is bent away from the photovoltaic panel, so that the two main pipes on the same side extend to the outside of the frame, which facilitates the connection of the pipeline.

[0055] Example 5

[0056] like Figure 12 As shown, the flow channel is an S-shaped flow channel, with the circulation inlet and circulation outlet at each end.

[0057] Example 6

[0058] like Figures 13 to 15 As shown, two core panels can be installed on the back of the photovoltaic panel at the same time. The flow channels used for the core panels can be either H-shaped or S-shaped.

[0059] Example 7

[0060] like Figure 16 As shown, the heat absorber plate has a curved groove 401 corresponding to the branch pipe. The branch pipe is placed in the curved groove, and the convex surface of the curved groove faces the photovoltaic panel. When the core strip presses against the flow channel, the flow channel also applies pressure to the curved groove of the heat absorber plate, so that the convex surface of the curved groove further contacts the photovoltaic panel, thereby improving the heat conduction efficiency.

[0061] An assembly method for PVT core panels that are easy to assemble on-site:

[0062] Step 1: Connect and fix the flow channel to the heat absorption plate by laser welding or Ω-shaped pressure strip to form a core structure. Spray an aerogel layer with a thickness of more than 2mm on the back of the heat absorption plate and the outer surface of the flow channel to form a lightweight insulation layer.

[0063] Step 2: Place the entire core panel into the frame, ensuring that the upper surface of the heat absorber panel is in close contact with the lower surface of the photovoltaic panel;

[0064] Step 3: Insert both ends of the multiple core strips into the frame grooves of the frame, use the clamping port of the core strips to press the branch pipe of the flow channel, and use screws to fix the core strips to the frame.

[0065] Step 4: The flow channels of multiple PVT panels are connected to each other through pipes to form a complete photovoltaic thermal system.

[0066] The above description illustrates and describes preferred embodiments of the present invention. As previously stated, it should be...

[0067] When this utility model is understood to be not limited to the forms disclosed herein, it should not be construed as a limitation on other forms.

[0068] The examples are excluded, but can be used in various other combinations, modifications, and environments, and can be applied throughout this document.

[0069] Within the scope of the aforementioned utility model concept, through the above teachings or related technologies or knowledge...

[0070] Modifications may be made. However, modifications and variations made by those skilled in the art do not depart from the spirit of this utility model.

[0071] Both the scope and range should be within the protection scope of the appended claims of this utility model.

Claims

1. A PVT core for easy on-site assembly, comprising a photovoltaic panel, a core, and a core retaining strip, wherein the photovoltaic panel is surrounded by a frame for clamping the photovoltaic panel, and the photovoltaic panel is fixedly connected to a groove in the frame, characterized in that: The core panel includes a heat absorber plate and a flow channel. The back of the heat absorber plate is fixed to the flow channel. The back of the heat absorber plate and the outer surface of the flow channel are uniformly coated with an aerogel coating with a thickness greater than 2mm. The core panel is placed inside the frame so that the upper surface of the heat absorber plate faces the lower surface of the photovoltaic panel. Multiple core panel strips are provided inside the frame. The two ends of the core panel strips are inserted into the frame grooves. The sides of the core panel strips are in abutting contact with the flow channel. The core panel strips ensure that the upper surface of the heat absorber plate is in close contact with the lower surface of the photovoltaic panel.

2. The PVT core panel according to claim 1, characterized in that: The heat absorption plate and the flow channel are connected and fixed by an Ω-shaped pressure strip, which is a thin aluminum plate.

3. The PVT core panel that is easy to assemble on-site according to claim 1, characterized in that: The flow channel is an H-shaped flow channel, including a main pipe and branch pipes. Multiple branch pipes are fixed between the two main pipes. The two ends of the branch pipes are connected to the main pipes respectively. The two ends of the main pipes are bent away from the photovoltaic panel, so that the two ends of the main pipes extend out of the back surface of the frame.

4. The PVT core panel according to claim 1, characterized in that: The flow channel is an H-shaped flow channel, including a main pipe and branch pipes. Multiple branch pipes are fixed between the two main pipes. The two ends of the branch pipes are connected to the main pipes respectively. The two ends of the branch pipes are bent away from the photovoltaic panel, so that the main pipes located at both ends of the branch pipes extend out of the back surface of the frame.

5. A PVT core panel that is easy to assemble on-site according to claim 1, characterized in that: The flow channel includes two main pipes, multiple branch pipes and one manifold. The two main pipes are set on the same side, and multiple branch pipes are fixed between the two main pipes and the manifold. One end of the branch pipe is connected to the main pipe and the other end is connected to the manifold. The end of the branch pipe connected to the main pipe is bent away from the photovoltaic panel, so that the two main pipes on the same side extend out of the back surface of the frame.

6. The PVT core panel according to claim 1, characterized in that: The flow channel is an S-shaped flow channel, with a circulation inlet and a circulation outlet at each end.

7. A PVT core panel that is easy to assemble on-site according to claim 1, characterized in that: The back of the photovoltaic panel has two core panels, each including a heat absorption plate and a flow channel, which is either an H-shaped or an S-shaped flow channel.

8. A PVT core panel that is easy to assemble on-site according to claim 1, characterized in that: The core strip has a U-shaped cross-section, including a base plate and two vertical plates. The top of the two vertical plates has multiple symmetrically arranged tube clamping ports along the length direction. The tube clamping ports correspond one-to-one with the branch pipes of the flow channel and are pressed and fixed to the branch pipes. The base plate has connecting sections extending in the length direction at both ends, and connecting holes are opened on the connecting sections.

9. A PVT core panel that is easy to assemble on-site according to claim 8, characterized in that: The heat absorption plate has curved grooves corresponding to the branch pipes. The branch pipes are placed in the curved grooves, with the convex side of the curved grooves facing the photovoltaic panel.

10. A PVT core panel that is easy to assemble on-site according to claim 1, characterized in that: Thermal grease or thermal adhesive is applied between the back of the photovoltaic panel and the heat absorber.

Images