Photovoltaic photo-thermal assembly with omega-shaped pipe groove heat absorbing plate
By using an Ω-shaped tube groove heat absorber plate connected to the laminated module in the photovoltaic thermal module, the problems of module thermal deformation and uneven heat conduction are solved, achieving efficient heat transfer and extended lifespan of the photovoltaic thermal module.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- YANGZHOU XILAI SOLAR ENERGY TECH
- Filing Date
- 2025-05-29
- Publication Date
- 2026-04-21
AI Technical Summary
Existing photovoltaic thermal modules suffer from thermal deformation of laminated structures and defects in the processing and heat transfer of heat-absorbing structures, leading to problems such as module warping, microcracks in silicon wafers, and uneven heat conduction.
The photovoltaic thermal module with Ω-shaped tube groove heat absorption plate is used. It is connected to the laminated module through multiple Ω-shaped tube groove heat absorption plates. The thermally conductive adhesive layer and thin cold-rolled metal plate are used to absorb thermal stress. Combined with the insulation layer and frame structure, it can achieve efficient heat transfer and deformation compensation.
It effectively prevents microcracks in silicon wafers of photovoltaic and solar thermal modules, improves heat conduction uniformity and module lifespan, and reduces manufacturing costs.
Smart Images
Figure CN224151185U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of photovoltaic and solar thermal equipment technology, specifically to a photovoltaic and solar thermal module containing an Ω-shaped tube groove heat absorption plate. Background Technology
[0002] Photovoltaic and solar thermal integrated panels achieve the dual functions of power generation and hot water production. They not only improve the power generation efficiency of photovoltaic modules but also provide hot water, greatly improving the utilization efficiency of solar energy. However, the current composite structure of photovoltaic and solar thermal modules still has the following key problems:
[0003] 1. Thermal Deformation Issues in Laminated Structures: Traditional laminated photovoltaic (PV) thermal modules use a single aluminum sheet and glass bonded together with an EVA adhesive layer. However, due to the significant difference in thermal expansion coefficients between aluminum and glass, asymmetric stress is generated under temperature cycling. This not only causes bidirectional warping deformation in the laminated module but also easily leads to microcracks in the solar cells, affecting the module's lifespan. Although using segmented aluminum sheets can partially alleviate deformation, the number of segments is positively correlated with cost. Too few segments still result in deformation problems, while too many segments significantly increase manufacturing costs.
[0004] 2. Defects in heat absorption structure processing and heat transfer: Existing Ω-shaped heat absorption strip bonding solutions require bonding metal channels one by one, resulting in low process efficiency and difficulty in cleaning up excess adhesive. Long Ω-shaped heat absorption plates are prone to pulling on silicon wafers during longitudinal thermal deformation, exacerbating the risk of microcracks. Furthermore, discretely distributed heat absorption strips also suffer from problems such as small heat absorption area, uneven thermal conductivity on the plate surface, and low thermal conductivity.
[0005] Therefore, it is necessary to provide a photovoltaic thermal module with an Ω-shaped tube groove heat absorber plate to solve the above-mentioned technical problems. Utility Model Content
[0006] The purpose of this invention is to address the shortcomings of existing technologies by providing a photovoltaic thermal module with an Ω-shaped tube groove heat absorber plate, which solves the problem of longitudinal and transverse deformation of the Ω-shaped heat absorber plate due to temperature changes and meets the requirements for preventing microcracks in the silicon wafers of the photovoltaic thermal module.
[0007] To achieve the above objectives, the technical solution adopted by this utility model is as follows:
[0008] A photovoltaic thermal module with Ω-shaped tube groove heat absorption plates includes a laminated module. The laminated module consists of an upper glass plate, a first adhesive layer, solar cells, a second adhesive layer, and a back sheet arranged sequentially from top to bottom. A heat absorption channel is provided below the laminated module. The heat absorption channel is connected and fixed to the laminated module by multiple Ω-shaped tube groove heat absorption plates. The multiple Ω-shaped tube groove heat absorption plates are arranged side by side along the length of the heat absorption channel. An insulation layer is provided below the Ω-shaped tube groove heat absorption plates. A frame is provided around the laminated module, the heat absorption channel, the Ω-shaped tube groove heat absorption plates, and the insulation layer.
[0009] Preferably, the heat absorption channel is an S-shaped channel or a grid-shaped channel.
[0010] Preferably, the Ω-shaped tube groove heat absorption plate includes a plurality of Ω-shaped tube grooves arranged laterally for fixing the heat absorption channel and a pressure plate for connecting and fixing to the lower surface of the lamination assembly. The Ω-shaped tube grooves and the heat absorption channel are coated with thermally conductive adhesive, and a thermally conductive adhesive layer is provided between the pressure plate and the lamination assembly.
[0011] Preferably, the Ω-shaped tube heat absorption plate is a thin cold-rolled metal plate, including a thin cold-rolled aluminum plate, a thin cold-rolled iron plate, or a thin cold-rolled stainless steel plate.
[0012] Preferably, the surface of the Ω-shaped tube heat absorber plate is provided with a cold-pressed pattern.
[0013] Preferably, the first adhesive layer is a transparent EVA layer, and the second adhesive layer is an EVA layer or a POE layer.
[0014] Preferably, the backplate is a glass plate, a TPT plate, or a KPK plate.
[0015] Preferably, the insulation layer is an insulation board, an aerogel layer, or insulation cotton, and the outer surface of the insulation cotton is wrapped with a metal shell.
[0016] Compared with the prior art, this utility model has the following advantages:
[0017] When the Ω-shaped tube groove heat absorption plate changes with temperature, the lateral deformation is offset by multiple Ω-shaped tube grooves. In the longitudinal direction, by setting multiple Ω-shaped tube groove heat absorption plates, the length of a single heat absorption plate is reduced, thereby absorbing the longitudinal deformation problem. This design scheme solves the problem of longitudinal and lateral deformation of the heat absorption plate due to temperature changes, and meets the requirement of preventing microcracks in the silicon wafers of photovoltaic thermal modules. Attached Figure Description
[0018] Figure 1 This is a schematic diagram of the structure of this utility model;
[0019] Figure 2 This is a top view of the present invention;
[0020] Figure 3 This is a top view of the Ω-shaped tube-groove heat absorber plate;
[0021] Figure 4 This is a side view of the Ω-shaped tube groove heat absorber plate;
[0022] Among them, 1-laminated assembly, 101-upper glass plate, 102-first adhesive layer, 103-battery cell, 104-second adhesive layer, 105-backsheet, 2-thermal conductive adhesive layer, 3-Ω-shaped tube groove heat absorption plate, 301-Ω-shaped tube groove, 302-pressure plate, 4-heat absorption channel, 5-insulation layer, 6-frame Detailed Implementation
[0023] 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 for illustrative purposes only and are not intended to limit 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.
[0024] 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.
[0025] 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.
[0026] like Figures 1 to 4 As shown, a photovoltaic thermal module with Ω-shaped grooved heat absorption plates includes a laminated module 1. The laminated module is composed of an upper glass plate 101, a first adhesive layer 102, solar cells 103, a second adhesive layer 104, and a back sheet 105 arranged sequentially from top to bottom. Both the first and second adhesive layers are EVA layers, and the back sheet is a TPT board. An S-shaped heat absorption channel 4 is provided below the laminated module. The heat absorption channel is connected and fixed to the laminated module by multiple Ω-shaped grooved heat absorption plates 3. The multiple Ω-shaped grooved heat absorption plates are arranged side by side along the length of the heat absorption channel. The Ω-shaped grooved heat absorption plate includes multiple transversely arranged elements for fixing the heat absorption channel. The hot runner has an Ω-shaped tube groove 301 and a pressure plate 302 for connecting and fixing to the lower surface of the laminate assembly. Thermally conductive adhesive is coated between the Ω-shaped tube groove and the heat absorption channel. Thermally conductive adhesive layer 2 is coated between the pressure plate of the Ω-shaped tube groove heat absorption plate and the laminate assembly. The Ω-shaped tube groove heat absorption plate is a thin cold-rolled aluminum plate. The surface of the Ω-shaped tube groove heat absorption plate is provided with cold-pressed patterns to reduce the deformation of the Ω-shaped tube groove heat absorption plate. An insulation layer 5 is provided below the Ω-shaped tube groove heat absorption plate. The insulation layer is made of insulation cotton. The outer surface of the insulation cotton is wrapped with a metal shell. A frame 6 is provided around the outer side of the laminate assembly, the heat absorption channel, the Ω-shaped tube groove heat absorption plate and the insulation layer.
[0027] The principle of a photovoltaic thermal module with Ω-shaped tube groove heat absorber plates: The laminated module consists of an upper glass plate, a first adhesive layer, solar cells, a second adhesive layer, and a backsheet, forming a stable photovoltaic power generation unit. An S-shaped heat absorption channel is connected to the lower surface of the laminated module through multiple parallel Ω-shaped tube groove heat absorber plates. Each Ω-shaped groove contains a heat absorber tube that is fixedly wrapped around the heat absorption channel. Thermally conductive adhesive is applied between the inner wall of the Ω-shaped groove and the heat absorber tube. A coating is applied between the pressure plate of the Ω-shaped tube groove heat absorber plate and the lower surface of the laminated module. A thermally conductive adhesive layer helps the working fluid in the heat absorption channel absorb heat, achieving photothermal conversion while ensuring that heat is efficiently transferred to the working fluid in the channel. The Ω-shaped tube groove heat absorption plate is made of thin cold-rolled aluminum plate. The multiple Ω-shaped tube grooves arranged laterally absorb lateral thermal stress through elastic deformation. The longitudinal parallel layout of the multiple Ω-shaped tube groove heat absorption plates shortens the length of a single piece, and the longitudinal thermal deformation is dispersed and offset, thereby avoiding microcracks in the solar cells. This design greatly extends the service life of the photovoltaic thermal module.
[0028] The foregoing description illustrates and describes preferred embodiments of the present invention. As previously stated, it should be understood that the present invention is not limited to the forms disclosed herein and should not be construed as excluding other embodiments. It can be used in various other combinations, modifications, and environments, and can be altered within the scope of the inventive concept described herein through the foregoing teachings or related technical or knowledge. Any modifications and variations made by those skilled in the art that do not depart from the spirit and scope of the present invention should be within the protection scope of the appended claims.
Claims
1. A photovoltaic-photothermal assembly comprising an Ω-shaped tube channel heat sink plate, characterized in that: The system includes a laminated assembly, which consists of an upper glass plate, a first adhesive layer, a battery cell, a second adhesive layer, and a back plate arranged sequentially from top to bottom. A heat absorption channel is provided below the laminated assembly. The heat absorption channel is connected and fixed to the laminated assembly by multiple Ω-shaped tube groove heat absorption plates. The multiple Ω-shaped tube groove heat absorption plates are arranged side by side along the length of the heat absorption channel. An insulation layer is provided below the Ω-shaped tube groove heat absorption plates. A frame is provided around the laminated assembly, the heat absorption channel, the Ω-shaped tube groove heat absorption plates, and the insulation layer.
2. A photovoltaic-photothermal assembly comprising Ω-shaped tube-trough heat sink panels according to claim 1, characterized in that: The heat absorption channel is an S-shaped channel or a grid-shaped channel.
3. A photovoltaic and photo thermal assembly containing Ω shaped tube and channel heat sink plate as claimed in claim 1, wherein: The Ω-shaped tube groove heat absorption plate includes multiple Ω-shaped tube grooves arranged laterally for fixing the heat absorption channel and a pressure plate for connecting and fixing to the lower surface of the lamination assembly. The Ω-shaped tube grooves and the heat absorption channel are coated with thermally conductive adhesive, and a thermally conductive adhesive layer is provided between the pressure plate and the lamination assembly.
4. A photovoltaic-photothermal assembly containing Ω-shaped tube-slot heat-absorbing plate according to claim 1, characterized in that: The Ω-shaped tube heat absorption plate is a thin cold-rolled metal plate, including thin cold-rolled aluminum plate, thin cold-rolled iron plate or thin cold-rolled stainless steel plate.
5. A photovoltaic and photo thermal assembly containing Ω shaped tube and channel heat sink plate as claimed in claim 1, wherein: The surface of the Ω-shaped tube groove heat absorption plate is provided with cold-pressed patterns.
6. A photovoltaic-photothermal assembly containing Ω-shaped tube-trough heat- absorbing plate according to claim 1, characterized in that: The first adhesive layer is a transparent EVA layer, and the second adhesive layer is an EVA layer or a POE layer.
7. A photovoltaic and photo thermal assembly containing Ω shaped tube and channel heat sink plate as claimed in claim 1, wherein: The back panel is a glass plate, a TPT plate, or a KPK plate.
8. A photovoltaic-photothermal assembly containing Ω-shaped tube-trough heat- absorbing plate according to claim 1, characterized in that: The insulation layer is an insulation board, an aerogel layer, or insulation cotton, and the outer surface of the insulation cotton is wrapped with a metal shell.