Photovoltaic module heat dissipation structure

Abstract

The utility model belongs to photovoltaic module heat dissipation technical field discloses a photovoltaic module heat dissipation structure, including photovoltaic frame, photovoltaic board, the back of photovoltaic board is installed with heat dissipation wing group through the clamping fixed component, heat dissipation wing group includes the heat dissipation fin that sets apart along photovoltaic board width direction, heat dissipation fin adopts hollow aluminium magnesium alloy material setting, and the inside of heat dissipation fin is filled with phase change material, the clamping fixed component includes the fixed block of installing along photovoltaic frame width direction and the symmetric setting and the clamping block of installing on both sides of heat dissipation fin, the inside of fixed block is provided with the clamping groove corresponding with clamping block, and clamping groove is adapted to clamping block, and the recess is seted up in the clamping groove. The utility model through aluminium magnesium alloy heat dissipation fin and the combination of phase change material can realize double heat dissipation, significantly reduce photovoltaic board operating temperature, utilize clamping fixed component to reduce additional weight simultaneously, avoid the influence installation angle, especially adapt distributed type project ventilation limited scene.

Description

Technical Field

[0001] This utility model relates to the field of photovoltaic module heat dissipation technology, and in particular to a photovoltaic module heat dissipation structure. Background Technology

[0002] A photovoltaic module heat dissipation structure refers to a system or device specifically designed to reduce the operating temperature of photovoltaic modules. Its core purpose is to reduce the temperature rise of the modules caused by sunlight by optimizing the heat transfer path or enhancing heat dissipation efficiency, thereby improving power generation efficiency and extending service life.

[0003] Traditional photovoltaic modules experience a decrease in photoelectric conversion efficiency due to rising temperature during prolonged operation, with power output decreasing by approximately 0.4% for every 1°C increase. Existing heat dissipation technologies primarily rely on natural heat dissipation from the aluminum alloy frame, which suffers from low heat dissipation efficiency, increased module weight, and limitations on installation angle. This is particularly problematic in distributed photovoltaic projects where ventilation space on the back of the module is limited, making conventional air-cooling structures difficult to implement. Therefore, we propose a heat dissipation structure for photovoltaic modules. Utility Model Content

[0004] In view of the problems of low heat dissipation efficiency, increased component weight, and impact on installation angle of existing photovoltaic module heat dissipation structures, this utility model is proposed.

[0005] To solve the above-mentioned technical problems, this utility model provides the following technical solution:

[0006] A photovoltaic module heat dissipation structure includes a photovoltaic frame and a photovoltaic panel, wherein a heat dissipation fin assembly is installed on the back of the photovoltaic panel by a snap-fit ​​fixing component;

[0007] The heat dissipation wing assembly includes heat dissipation fins equidistantly arranged along the width direction of the photovoltaic panel. The heat dissipation fins are made of hollow aluminum-magnesium alloy and are filled with phase change material.

[0008] The snap-fit ​​fixing assembly includes a fixing block installed symmetrically along the width direction of the photovoltaic frame and snap-fit ​​blocks installed on both sides of the heat dissipation fins. The fixing block has a snap-fit ​​groove inside that corresponds to the snap-fit ​​block, and the snap-fit ​​groove is adapted to the snap-fit ​​block.

[0009] As a technical solution of the photovoltaic module heat dissipation structure of this utility model, wherein: the snap-fit ​​groove is provided with an asymmetrically arranged groove, and the snap-fit ​​block has an integrally formed snap-fit ​​protrusion that corresponds to the groove, and the snap-fit ​​protrusion is adapted to the groove.

[0010] As a technical solution of the photovoltaic module heat dissipation structure of the present invention, the heat dissipation fins are T-shaped structures with vertical and horizontal parts, the vertical and horizontal parts are integrally formed, and the snap-fit ​​block is installed on the vertical part.

[0011] As a technical solution of the photovoltaic module heat dissipation structure of the present invention, a gap is formed between the horizontal part and the back of the photovoltaic panel, and the gap is filled with thermally conductive adhesive.

[0012] As a technical solution of the photovoltaic module heat dissipation structure of the present invention, a plurality of turbulent protrusions are installed on both sides of the vertical part, and the plurality of turbulent protrusions are equidistant and symmetrically arranged along the length direction of the heat dissipation fins.

[0013] As a technical solution of the photovoltaic module heat dissipation structure of the present invention, the turbulent protrusion is pyramid-shaped, and the protrusion height of the turbulent protrusion is 1 / 3-1 / 2 of the thickness of the heat dissipation fin.

[0014] Compared with the prior art, the present invention has at least the following beneficial effects:

[0015] 1. This utility model achieves dual heat dissipation by combining aluminum-magnesium alloy heat dissipation fins with phase change materials, significantly reducing the operating temperature of photovoltaic panels. At the same time, the snap-fit ​​fixing components reduce additional weight and avoid affecting the installation angle, making it particularly suitable for distributed projects with limited ventilation.

[0016] 2. This utility model simplifies the assembly process through an asymmetrical snap-fit ​​design, allowing installation to be completed without tools. At the same time, the pyramid-shaped turbulent protrusions improve heat dissipation efficiency at the cost of low wind resistance, thus solving the problem that traditional air-cooled structures are difficult to implement in confined spaces. Attached Figure Description

[0017] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort. Among them:

[0018] Figure 1 This is a schematic diagram of the overall structure of this utility model.

[0019] Figure 2 This is a schematic diagram of the heat dissipation fins and photovoltaic frame separation structure of this utility model.

[0020] Figure 3 For the present utility model Figure 2 Enlarged structural diagram at point A in the middle.

[0021] Figure 4 This is a cross-sectional view of the heat dissipation fins and thermally conductive adhesive of this utility model.

[0022] Figure 5 For the present utility model Figure 4 Enlarged structural diagram at point B.

[0023] Explanation of reference numerals in the attached figures:

[0024] In the diagram: 1. Photovoltaic frame; 101. Fixing block; 102. Snap-fit ​​groove; 1021. Groove; 2. Photovoltaic panel; 301. Heat dissipation fins; 3011. Vertical part; 3012. Horizontal part; 302. Snap-fit ​​block; 3021. Snap-fit ​​protrusion; 303. Phase change material; 304. Turbulent protrusion; 4. Thermally conductive adhesive. Detailed Implementation

[0025] To make the above-mentioned objectives, features and advantages of this utility model more apparent and understandable, the specific embodiments of this utility model will be described in detail below with reference to the accompanying drawings.

[0026] Reference Figures 1-5 A heat dissipation structure for a photovoltaic module is provided. This heat dissipation structure includes a photovoltaic frame 1 and a photovoltaic panel 2. A heat dissipation fin group is installed on the back of the photovoltaic panel 2 by means of a snap-fit ​​fixing component.

[0027] The heat dissipation fin assembly includes heat dissipation fins 301 equidistantly arranged along the width direction of the photovoltaic panel 2. The heat dissipation fins 301 are made of hollow aluminum-magnesium alloy. The interior of the heat dissipation fins 301 is filled with phase change material 303. The volume ratio of the cavity of the heat dissipation fins 301 is ≥70% to ensure the heat storage capacity. The phase change material 303 can be a paraffin-based composite phase change material (melting point 50-60℃). After being heated to a liquid state, it is injected into the cavity of the heat dissipation fins 301, and after cooling and solidification, the port is sealed.

[0028] The snap-fit ​​fixing assembly includes a fixing block 101 installed symmetrically along the width of the photovoltaic frame 1 and snap-fit ​​blocks 302 installed on both sides of the heat dissipation fins 301. The fixing block 101 has a snap-fit ​​groove 102 inside that corresponds to the snap-fit ​​block 302, and the snap-fit ​​groove 102 is compatible with the snap-fit ​​block 302. In application, the heat dissipation fins 301 are made of hollow aluminum-magnesium alloy, which has the characteristics of being lightweight and having strong thermal conductivity. The internal phase change material 303 can absorb and store heat, delay the temperature rise of the photovoltaic panel 2, and directly improve the photoelectric conversion efficiency. At the same time, the cooperation between the fixing block 101 and the snap-fit ​​block 302 enables quick installation, avoiding the problems of increased weight and limited installation angle caused by traditional bolt fixing, which is especially suitable for the narrow space of distributed photovoltaics.

[0029] Reference Figures 1-3The snap-fit ​​groove 102 has an asymmetrically arranged groove 1021. The snap-fit ​​block 302 has an integrally formed snap-fit ​​protrusion 3021 that corresponds to the groove 1021. The snap-fit ​​protrusion 3021 is adapted to the groove 1021. The snap-fit ​​protrusion 3021 can be formed by stamping and forms an interference fit with the groove 1021 (tolerance ±0.1mm). In application, the asymmetrical design of the groove 1021 and the snap-fit ​​protrusion 3021 forms a mistake-proof structure, ensuring the uniqueness of the installation direction of the heat dissipation fin 301, avoiding assembly errors, and improving installation efficiency and structural stability.

[0030] Reference Figure 4 and Figure 5 The heat dissipation fin 301 is a T-shaped structure with a vertical part 3011 and a horizontal part 3012. The vertical part 3011 and the horizontal part 3012 are integrally formed. The snap-fit ​​block 302 is installed on the vertical part 3011. In application, the vertical part 3011 of the T-shaped heat dissipation fin 301 provides the mounting surface of the snap-fit ​​block 302 to ensure structural strength. The horizontal part 3012 expands the heat dissipation surface area and enhances the heat exchange efficiency with air. At the same time, the integrally formed design avoids the thermal resistance of the weld and improves the continuity of heat conduction.

[0031] Reference Figure 4 and Figure 5 A gap is formed between the horizontal part 3012 and the back of the photovoltaic panel 2, and the gap is filled with thermally conductive adhesive 4. The thermally conductive adhesive 4 is made of high thermal conductivity silicone grease (thermal conductivity ≥3W / m·K) and is evenly applied to the gap between the horizontal part 3012 of the heat dissipation fin 301 and the back of the photovoltaic panel 2. The filling thickness is controlled at 0.5-1mm. After curing, a continuous thermally conductive layer is formed. In application, the thermally conductive adhesive 4 fills the gap between the horizontal part 3012 and the back of the photovoltaic panel 2, which can eliminate the air insulation layer and significantly improve the heat conduction efficiency from the photovoltaic panel 2 to the heat dissipation fin 301.

[0032] Reference Figure 4 and Figure 5 Several turbulent protrusions 304 are installed on both sides of the vertical part 3011. The turbulent protrusions 304 are equidistant and symmetrically arranged along the length of the heat dissipation fin 301. The turbulent protrusions 304 are pyramid-shaped and are formed by laser etching or mold imprinting. The protrusion height of the turbulent protrusions 304 is 1 / 3 to 1 / 2 of the thickness of the heat dissipation fin 301. In application, the pyramid-shaped turbulent protrusions 304 disrupt the laminar flow of air, enhance airflow turbulence, and improve the convective heat transfer coefficient of the surface of the heat dissipation fin 301. At the same time, the height of the turbulent protrusions 304 is limited to 1 / 3 to 1 / 2 of the thickness of the heat dissipation fin 301, so as to optimize heat dissipation while avoiding excessive wind resistance that affects natural ventilation.

[0033] The working principle of this utility model is as follows: Installation preparation: Check the cleanliness of the back of the photovoltaic panel 2, remove dust and oil stains, and confirm the corresponding direction of the snap-fit ​​block 302 on the heat dissipation fin 301 and the fixing block 101 on the photovoltaic frame 1.

[0034] Heat dissipation fin assembly installation: Align the snap-fit ​​block 302 on the heat dissipation fin 301 with the snap-fit ​​groove 102 of the photovoltaic frame 1, press it vertically until the snap-fit ​​protrusion 3021 is fully engaged with the groove 1021, and then repeat the above operation to install all heat dissipation fins 301 at equal intervals in the width direction of the photovoltaic panel 2.

[0035] Filling of thermally conductive adhesive 4: Use a glue gun to inject thermally conductive adhesive 4 into the gap from the horizontal part 3012 edge of the heat dissipation fin 301. After the adhesive flows naturally and covers more than 80% of the contact surface, let it stand to cure (about 2 hours at room temperature).

[0036] Use and maintenance: Daily operation: Relying on natural convection for heat dissipation, the phase change material 303 absorbs heat and melts when the temperature of photovoltaic panel 2 is >50℃, and solidifies and releases heat after cooling at night;

[0037] Regular inspection: Clean the dust off the surface of the heat sink fins 301 every once in a while (e.g., every 6 months) and check if the locking block 302 is loose. If it is loose, press it back into place.

[0038] This utility model provides a heat dissipation structure for photovoltaic modules. This structure achieves dual heat dissipation (heat conduction and heat storage) by combining aluminum-magnesium alloy heat dissipation fins 301 with phase change material 303, which significantly reduces the operating temperature of photovoltaic panel 2. The use of snap-fit ​​to fix the components can reduce additional weight and avoid affecting the installation angle, which is especially suitable for distributed projects with limited ventilation. At the same time, the asymmetric snap-fit ​​design simplifies the assembly process and can be installed without tools. The pyramid-shaped turbulent flow protrusions 304 improve heat dissipation efficiency at the cost of low wind resistance, solving the problem that traditional air-cooled structures are difficult to implement in confined spaces.

[0039] It should be noted that the above embodiments are only used to illustrate the technical solution of this utility model and are not intended to limit it. Although this utility model has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solution of this utility model without departing from the spirit and scope of the technical solution of this utility model, and all such modifications or substitutions should be covered within the scope of the claims of this utility model.

Claims

1. A photovoltaic module heat dissipation structure, comprising a photovoltaic frame (1) and a photovoltaic panel (2), characterized in that: The back of the photovoltaic panel (2) is fitted with heat dissipation fins by a snap-fit ​​fixing assembly; The heat dissipation wing assembly includes heat dissipation fins (301) that are equidistantly arranged along the width direction of the photovoltaic panel (2). The heat dissipation fins (301) are made of hollow aluminum-magnesium alloy and are filled with phase change material (303). The snap-fit ​​fixing assembly includes a fixing block (101) installed symmetrically along the width direction of the photovoltaic frame (1) and snap-fit ​​blocks (302) installed on both sides of the heat dissipation fins (301). The fixing block (101) has a snap-fit ​​groove (102) corresponding to the snap-fit ​​block (302) inside, and the snap-fit ​​groove (102) is adapted to the snap-fit ​​block (302).

2. The photovoltaic module heat dissipation structure according to claim 1, characterized in that: The snap-fit ​​groove (102) has an asymmetrically arranged groove (1021), and the snap-fit ​​block (302) has an integrally formed snap-fit ​​protrusion (3021) that corresponds to the groove (1021). The snap-fit ​​protrusion (3021) is adapted to the groove (1021).

3. The photovoltaic module heat dissipation structure according to claim 1, characterized in that: The heat dissipation fin (301) is a T-shaped structure with a vertical part (3011) and a horizontal part (3012). The vertical part (3011) and the horizontal part (3012) are integrally formed, and the snap-fit ​​block (302) is installed on the vertical part (3011).

4. The photovoltaic module heat dissipation structure according to claim 3, characterized in that: A gap is formed between the horizontal part (3012) and the back of the photovoltaic panel (2), and the gap is filled with thermally conductive adhesive (4).

5. The photovoltaic module heat dissipation structure according to claim 3, characterized in that: A plurality of turbulent protrusions (304) are installed on both sides of the vertical part (3011), and the plurality of turbulent protrusions (304) are equidistant and symmetrically arranged along the length direction of the heat dissipation fins (301).

6. The photovoltaic module heat dissipation structure according to claim 5, characterized in that: The turbulence protrusion (304) is pyramid-shaped, and the protrusion height of the turbulence protrusion (304) is 1 / 3 to 1 / 2 of the thickness of the heat dissipation fin (301).

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