High-strength photovoltaic frame based on honeycomb sandwich structure

Abstract

The invention relates to the technical field of photovoltaic frames, in particular to a high-strength photovoltaic frame based on a honeycomb sandwich structure, which comprises a photovoltaic panel, a wire box, a frame shell, a mounting groove, a mounting cavity, a sandwich assembly, a mounting groove, a fixing assembly and a clamping assembly, a wire box is arranged on the back face of the photovoltaic panel, the frame shell is arranged on the periphery of the photovoltaic panel, the installation grooves are formed in the inner side face of the frame shell, the installation cavity is formed in the lower portion of the frame shell, the interlayer assembly is installed in the installation cavity, and the installation grooves are formed in the upper face and the lower face of the frame shell. The fixing assembly is mounted in a mounting groove in the upper surface of the frame shell, and the clamping assembly is mounted in a mounting groove in the lower surface of the frame shell; the frame shells are clamped on the four edges of the photovoltaic panel, the frame shells are sequentially fixed through glue injection by means of partition arrangement of the frame shells, and the interlayer assembly disperses and weakens external stress borne by the photovoltaic panel through a double-layer honeycomb structure.

Description

Technical Field

[0001] This invention relates to the field of photovoltaic frame technology, and more specifically to a high-strength photovoltaic frame based on a honeycomb sandwich structure. Background Technology

[0002] Currently, most photovoltaic (PV) modules on the market use metal (such as aluminum alloy) frames for encapsulation and fixation. The mainstream frame installation method typically relies on a snap-fit ​​structure, reinforced with adhesives. However, this structure has significant drawbacks: First, the adhesive areas are often directly exposed to the outdoor environment, subject to long-term erosion from UV rays, temperature differences, humidity, salt spray, and other environmental factors, easily leading to adhesive aging and failure. This, in turn, affects the frame's fastening strength and sealing, ultimately shortening the overall lifespan of the PV module. Second, during long-distance transportation and storage of PV modules, multiple modules are often stacked vertically to save space. Existing solutions often involve adding soft spacers (such as EPE foam, etc.) between modules to avoid direct friction. However, this method has limited effectiveness; the soft spacers themselves may shift, still failing to completely prevent micro-friction damage to the module surface (especially the silicon crystal surface or glass) during vibration. Furthermore, the spacers have poor stability, posing a safety risk of module tilting or even collapse when stacked in multiple layers, causing potential property damage and transportation difficulties.

[0003] In summary, existing photovoltaic (PV) frames have significant shortcomings in terms of long-term environmental weather resistance and the safety of transport and stacking. Therefore, there is an urgent need for an innovative PV frame design that can fundamentally protect the connection structure from environmental corrosion, while providing stable and reliable physical isolation and support during module stacking, thereby improving the overall lifecycle reliability of PV modules.

[0004] In view of the above, in order to overcome the above technical problems, the present invention designs a high-strength photovoltaic frame based on a honeycomb sandwich structure, thus solving the above technical problems. Summary of the Invention

[0005] The technical objective of this invention is to provide an innovative photovoltaic frame design that fundamentally protects the connection structure from environmental erosion while providing stable and reliable physical isolation and support when modules are stacked, thereby improving the reliability of photovoltaic modules throughout their entire life cycle.

[0006] To achieve the above-mentioned technical objectives, the present invention provides the following technical solution: A high-strength photovoltaic frame based on a honeycomb sandwich structure includes a photovoltaic panel, a wiring box, a frame shell, a fixing groove, a mounting cavity, a sandwich assembly, a mounting groove, a fixing assembly, and a snap-fit ​​assembly. The wiring box is located on the back of the photovoltaic panel. The frame shell is arranged around the perimeter of the photovoltaic panel. The fixing groove is located on the inner side of the frame shell. The mounting cavity is located in the lower part of the frame shell. The sandwich assembly is installed in the mounting cavity. The mounting groove is located on the upper and lower sides of the frame shell. The fixing assembly is installed in the mounting groove on the upper side of the frame shell, and the snap-fit ​​assembly is installed in the mounting groove on the lower side of the frame shell. The frame shell snaps onto the four sides of the photovoltaic panel. By dividing the frame shell into sections, it is sequentially fixed with adhesive. The sandwich assembly utilizes a double-layer honeycomb structure to disperse and weaken the external stress on the photovoltaic panel. During transportation and stacking, the snap-fit ​​assembly of the upper frame shell is fixed within the fixing assembly of the lower frame shell, maintaining a gap between adjacent photovoltaic panels.

[0007] Preferably, the cross-sectional shape of the fixing groove is set to rectangular, the depth of the fixing groove is set to 2 / 3 of the width of the outer frame shell, the fixing grooves are arranged in a linear array on the outer frame shell, and adjacent fixing grooves are not connected to each other.

[0008] Preferably, the fixing groove has an adhesive groove on its upper surface, the adhesive groove has an isosceles trapezoidal cross-sectional shape, the adhesive groove has an overflow groove on its side surface, the overflow groove is circular, the adhesive groove has a supply channel on its upper surface, one end of the supply channel has a glue inlet, the glue inlet is funnel-shaped, the upper edge of the fixing groove has an adhesive bevel, and one end of the overflow groove communicates with the adhesive bevel.

[0009] Preferably, the mezzanine assembly includes an upper mezzanine, a lower mezzanine, and a support assembly; The upper interlayer is disposed in the upper part of the mounting cavity, the lower interlayer is installed below the upper interlayer, and the support assembly is installed inside the upper interlayer.

[0010] Preferably, the upper interlayer includes an upper support frame and an upper support slot; the upper support frame is made of a rigid material and is honeycomb shaped, and the upper support slot is formed inside the upper support frame.

[0011] Preferably, the lower interlayer includes a lower support frame, a lower support slot, and a partition plate; the lower support frame is made of a soft material and is honeycomb shaped; the lower support slot is opened inside the lower support frame; the lower support frame and the upper support frame are staggered; the axis of the lower support slot coincides with the central axis of the triangle formed by the axes of the three upper support slots; and the partition plate is installed on the upper part of the lower support frame.

[0012] Preferably, the support assembly includes a support column and a contact head; the support column is installed in the middle of the upper support slot, and the axis of the support column coincides with the axis of the upper support slot; the contact head is installed on the top of the support column, and the cross-sectional shape of the contact head is set to trapezoidal.

[0013] Preferably, the fixing assembly includes a fixing threaded post, a fixing sleeve, a return spring, a pressing block, and a mating groove; the fixing threaded post is installed in the mounting groove on the outer frame shell, the fixing sleeve is installed on the fixing threaded post, the return spring is installed in the empty groove on the inner side of the fixing sleeve, the pressing block is installed at one end of the return spring, and the mating groove is formed on the upper part of the fixing sleeve.

[0014] Preferably, the upper edge of the pressure block is provided with a contact arc surface.

[0015] Preferably, the snap-fit ​​assembly includes a snap-fit ​​threaded post, a snap-fit ​​disc, a mating ring, a snap-fit ​​post, and a mating arc surface; the snap-fit ​​threaded post is installed in the mounting groove below the frame housing, the snap-fit ​​disc is disposed below the snap-fit ​​threaded post, the mating ring is installed below the snap-fit ​​disc, the snap-fit ​​post is installed below the snap-fit ​​disc, and the mating arc surface is disposed on the bottom surface of the snap-fit ​​post.

[0016] The beneficial effects of this invention are as follows: 1. This invention fundamentally solves the problem of traditional photovoltaic frame bonding joints being susceptible to environmental corrosion through an innovative concealed, partitioned adhesive injection structure. The dedicated bonding groove, overflow hole, and bonding bevel at the bottom of the fixing groove, together with the supply channel, constitute a precise internal circulation adhesive injection system. This design ensures that high-performance sealant can uniformly and fully fill all critical interfaces, and completely encloses the final bonding and curing area within the fixing groove formed by the frame housing, completely isolating it from external environments such as ultraviolet radiation, rain, and salt spray. Furthermore, the partitioned design of multiple independent fixing grooves not only ensures full and controllable adhesive injection but also forms redundant bonding units. Even if local damage occurs, it does not affect the overall fixing strength, thereby greatly extending the service life of the frame-photovoltaic panel connection structure and improving the long-term reliability of photovoltaic modules under harsh outdoor conditions.

[0017] 2. The "rigid-soft interlaced honeycomb" composite sandwich structure introduced in this invention brings significant lightweight and high-strength characteristics to the frame. The honeycomb structure of the rigid upper sandwich layer first efficiently disperses external stress; the load transmitted through the support columns is then elastically absorbed and secondary diffused by the soft, interlaced honeycomb lower sandwich layer. This synergistic mechanism of "rigid dispersion - elastic buffering - secondary diffusion" not only greatly improves the overall bending and torsional stiffness and load-bearing capacity of the frame, but also has excellent damping and vibration reduction effects. It can effectively cope with static loads such as wind pressure and snow loads, and can also buffer dynamic impacts such as transportation bumps and installation stresses, thereby protecting the internal photovoltaic cells in all aspects, reducing the risk of microcracks, and ensuring the structural integrity and power generation performance stability of the photovoltaic module under complex working conditions.

[0018] 3. This invention revolutionizes the stacking and transportation of photovoltaic modules through a fixing and snap-fit ​​assembly integrated into the frame. This mechanism, through the rigid contact between the snap-fit ​​plate and the end face of the fixing sleeve, forcibly forms and maintains a constant gap between the upper and lower layers of modules, completely avoiding any physical contact between the module surfaces and eliminating frictional damage during transportation. Simultaneously, the spring-preloaded locking mechanism and the constraint of the radial mating ring enable the connection points to resist vertical slippage and lateral loosening, firmly locking multiple independent modules into a stable, integrated frame structure. This method replaces the traditional unstable and easily displaced soft spacers, greatly improving the stack's anti-tipping resistance and overall stability, ensuring the absolute safety of large-scale photovoltaic modules during long-distance transportation and storage, and significantly reducing the risk of damage and collapse. Attached Figure Description

[0019] To more clearly illustrate the specific embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of the present invention. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0020] The above and other aspects of the invention will now be described by way of example only, with reference to the accompanying drawings, in which: Figure 1 This is a schematic diagram of the overall structure of the present invention; Figure 2 This is a schematic diagram showing the location of the electrical box of the present invention; Figure 3 This is a schematic diagram showing the position of the fixing groove in this invention; Figure 4 This is a schematic diagram of the stacking of the present invention; Figure 5 This is a schematic diagram of the fixing groove of the present invention; Figure 6This is a cross-sectional view of the outer frame of the present invention; Figure 7 This is a schematic diagram of the sandwich assembly structure of the present invention; Figure 8 This is a schematic diagram of the sandwich structure of the present invention; Figure 9 This is a schematic diagram of the structure of the lower interlayer and support assembly of the present invention; Figure 10 This is a cross-sectional view of the sandwich assembly of the present invention; Figure 11 This is a schematic diagram of the fixed component structure of the present invention; Figure 12 This is a schematic diagram of the snap-fit ​​component structure of the present invention; Figure 13 This is a cross-sectional view of the fixing component and the snap-fit ​​component of the present invention.

[0021] In the diagram: 1. Photovoltaic panel; 2. Electrical box; 3. Frame housing; 4. Fixing groove; 41. Adhesive groove; 42. Overflow groove; 43. Supply channel; 44. Adhesive outlet; 45. Adhesive bevel; 5. Mounting cavity; 6. Mezzanine assembly; 61. Upper mezzanine; 611. Upper support frame; 612. Upper support slot; 62. Lower mezzanine; 621. Lower support frame; 622. Lower support slot; 623. Partition plate; 63. Support assembly; 631. Support column; 632. Contact head; 7. Mounting groove; 8. Fixing assembly; 81. Fixing threaded column; 82. Fixing sleeve; 83. Return spring; 84. Extrusion block; 85. Mating groove; 841. Contact arc surface; 9. Snap-fit ​​assembly; 91. Snap-fit ​​threaded column; 92. Snap-fit ​​disc; 93. Mating ring; 94. Snap-fit ​​column; 95. Mating arc surface. Detailed Implementation

[0022] To better understand the above technical solutions, the following will provide a detailed explanation of the technical solutions in conjunction with the accompanying drawings and specific implementation methods.

[0023] This invention provides a lightweight, high-strength photovoltaic frame based on a honeycomb sandwich structure, solving two core problems in existing photovoltaic frame technologies: the susceptibility of the bonding areas to environmental corrosion and aging, and damage to photovoltaic modules during stacking and transportation due to friction and unstable stacking. Through structural innovation, it achieves sealed protection of the connection points, significantly improved mechanical properties, and rigid stability during stacking and transportation. Example 1

[0024] like Figure 1-6 As shown, in this embodiment, a method for installing a photovoltaic frame will be described in detail: The photovoltaic frame system mainly revolves around the photovoltaic panel 1, the frame shell 3, the built-in honeycomb sandwich structure, and the dedicated stacking connection mechanism.

[0025] The photovoltaic panel 1 is a conventional solar cell module, with a current-collecting electrical box 2 installed on its back. The frame housing 3 is made of aluminum alloy profiles and is connected by corner brackets to form a rectangular frame, which covers and fixes to the four edges of the photovoltaic panel 1. The mounting cavity 5 inside the frame housing 3 is not a simple cavity, but has clearly defined functional areas.

[0026] Inside the frame housing 3, there is a fixing groove 4 for securing the glass and back panel edge of the photovoltaic panel 1. In the lower middle part of the frame housing 3 cross-section, there is a rectangular mounting cavity 5 extending along its length, specifically designed to accommodate the sandwich assembly 6. Furthermore, several parallel fixing grooves 4 are machined on the upper surface (facing the sky) and lower surface (facing the adjacent photovoltaic panel 1) of the frame housing 3. Their depth is approximately two-thirds of the width of the frame housing 3. The fixing grooves 4 are used to install the fixing assembly 8 and the snap-fit ​​assembly 9, with the fixing assembly 8 installed on the upper surface of the frame housing 3 and the snap-fit ​​assembly 9 installed on the lower surface of the frame housing 3.

[0027] To address the problem of exposed adhesive layers in existing technologies, this invention designs a new adhesive injection structure within the fixing groove 4 on the upper surface of the frame housing 3. Specifically, a slender adhesive groove 41 with an isosceles trapezoidal cross-section is machined at the center of the bottom of the fixing groove 4. Multiple tiny circular overflow holes are spaced apart on the two sloping sidewalls of the adhesive groove 41. An inclined adhesive ramp is also provided at the top edge of the fixing groove 4, near the upper surface of the frame. Simultaneously, a concealed supply channel 43 is arranged along the length of the frame, with one end connected to the adhesive groove 41 and the other end extending to the end of the frame and widening into a funnel-shaped adhesive inlet 44.

[0028] During installation, the operation process is as follows: First, the frame housing 3 is initially snapped onto the edge of the photovoltaic panel 1. Then, high-performance weather-resistant sealant is injected through the glue supply port 44. Under capillary action and pressure, the sealant quickly fills the supply channel 43 and the bottom bonding groove 41 through the glue supply port 44. As the sealant continues to be injected, the sealant that has filled the bonding groove 41 will be squeezed out through the overflow hole on the side wall, flowing evenly to the groove opening area of ​​the fixing groove 4, and fully wetting the preset bonding slope. When the operator observes that all the overflow grooves 42 have overflowed with sealant, it can be determined that the gap space between the bonding groove 41 inside the frame housing 3 and the photovoltaic panel 1 is full of sealant. Using a smoothing tool, the excess sealant is filled into the bonding slope 45 to further provide external adhesion. It is worth noting that there are multiple fixing grooves 4 on one side of the frame housing 3, and the adjacent fixing grooves 4 are separated by partitions, so as to realize multiple partitioned glue application, ensure the bonding effect, and reduce the possibility of blockage. Even if some of the fixing grooves 4 are corroded during later use, it does not affect the bonding effect between the entire frame shell 3 and the photovoltaic panel 1, greatly improving the service life.

[0029] After the four frame shells 3 are perfectly encapsulated on the edges of the photovoltaic panel 1, they are completely isolated from the harsh external environment (ultraviolet rays, rain, salt spray), which greatly extends the service life of the connection structure. Example 2

[0030] like Figure 7-10 As shown, this embodiment describes an internal sandwich structure based on a honeycomb structure, which improves the mechanical properties and service life of the frame shell 3, based on the above embodiments.

[0031] The interlayer assembly 6 is installed within the mounting cavity 5 of the frame housing 3. This assembly is key to giving the frame excellent mechanical properties and cushioning capabilities. The interlayer assembly 6 consists of three parts from top to bottom: an upper interlayer 61, a lower interlayer 62, and a support assembly 63.

[0032] The sandwich assembly 6 includes an upper sandwich 61, a lower sandwich 62, and a support assembly 63. The upper sandwich 61 is made of a rigid, high-strength material (such as reinforced nylon or hard aluminum alloy), and its main body is a standard honeycomb structure plate, which we call the upper support frame 611. Numerous hexagonal upper support slots 612 are regularly arranged inside. This structure provides extremely high planar stiffness and bending strength with minimal material.

[0033] The lower interlayer 62, located below the upper interlayer 61, is made of a soft, highly damping elastic material (such as thermoplastic polyurethane or rubber). Its main body is also a honeycomb structure panel, called the lower support frame 621, with hexagonal lower support slots 622 formed inside. The core design element is that the honeycomb grid of the lower interlayer 62 and the upper interlayer 61 are staggered in the plane. Specifically, when the lower interlayer 62 and the upper interlayer 61 are aligned and overlapped, the central axis of one lower support slot 622 will approximately align with the center point of the triangle formed by the center points of three adjacent upper support slots 612 of the upper interlayer 61. This staggered arrangement allows concentrated loads from the upper layer to be effectively distributed and transferred to multiple support units in the lower layer. A thin but strong partition plate 623 is also attached to the top surface of the lower support frame 621 to evenly distribute pressure and protect the soft material.

[0034] The support assembly 63 is a series of vertically arranged rigid pillars, each pillar being precisely located at the geometric center of an upper support slot 612, and the top of the pillar is provided with a trapezoidal contact head 632 to provide a larger contact area.

[0035] The working principle of the sandwich assembly 6 is as follows: when the frame is subjected to external forces such as wind pressure, snow load, or transportation vibration, the force is first transmitted to the rigid upper sandwich 61. The honeycomb structure of the upper sandwich 61 quickly disperses the stress to the individual honeycomb cell walls. Subsequently, the stress is transmitted downwards as a point load through the contact head 632 at the top of the support column 631. Because the material of the lower sandwich 62 is soft and the honeycomb structure is interwoven, these point loads are elastically absorbed and buffered, and further diffused to a larger contact area of ​​the lower sandwich 62. This mechanism of "rigid dispersion first, elastic buffering second, and secondary diffusion last" can significantly weaken the impact, suppress vibration, and greatly improve the overall torsional and deformation resistance of the frame. Example 3

[0036] like Figure 1-4 and Figure 11-13 As shown, based on the above embodiments, this embodiment introduces a functional mechanism suitable for safe and stable stacking, including a fixing component 8 and a snap-fit ​​component 9.

[0037] The fixing component 8 is installed in the mounting groove 7 on the upper surface of the frame housing 3. It mainly includes a fixing threaded post 81 fixed by threads, on which a fixing sleeve 82 is fixedly installed. The fixing sleeve 82 is hollow inside, and four slots are opened inside the fixing sleeve 82. Multiple return springs 83 are arranged in the slots. The return springs 83 are connected to a pressing block 84 that can move radially. The upper edge of the pressing block 84 is machined into a smooth contact arc surface 841. A mating groove 85 is machined at the top center of the fixing sleeve 82.

[0038] The snap-fit ​​assembly 9 is installed in the mounting groove 7 on the lower surface of the frame housing 3. It includes a snap-fit ​​threaded post 91 for fixing, and a circular snap-fit ​​disc 92 is connected to the lower end of the snap-fit ​​threaded post 91. Below the snap-fit ​​disc 92, there is an annular mating ring 93 and a cylindrical snap-fit ​​post 94 coaxially disposed. The mating ring 93 is made of rubber, and the bottom surface of the snap-fit ​​post 94 is machined into a spherical mating arc surface 95.

[0039] like Figure 4As shown, when two photovoltaic panels 1 need to be stacked, multiple fixing components 8 and snap-fit ​​components 9 are first installed in the mounting groove 7 according to the specific situation. However, each frame housing 3 is provided with at least one pair of fixing components 8 and snap-fit ​​components 9. The snap-fit ​​components 9 are vertically aligned with the fixing components 8 and then lowered. At the moment of contact, the mating arc surface 95 at the bottom of the snap-fit ​​post 94 will contact the arc surface of the upper edge of the pressing block 84 inside the fixing component 8, and press the pressing block 84 to move downward, compressing the internal spring. The snap-fit ​​post 94 can then be smoothly inserted into the internal cavity of the fixing sleeve 82. Under the action of the return spring 83, the pressing block 84 dampens the horizontal sway. When it is pressed into place, the lower surface of the snap-fit ​​plate 92 will contact and sit on the upper end face of the fixing sleeve 82. At this time, the bottom of the snap-fit ​​post 94 is completely matched with the fixing sleeve 82, and the mating ring 93 under the snap-fit ​​plate 92 is located above the mating groove 85, forming a radial constraint. At this time, the internally compressed spring pushes the pressing block 84 upward, causing the pressing block 84 to press tightly against the locking post 94, forming a continuous pre-tightening locking force, which effectively prevents vertical jumping and lateral loosening that may occur during transportation bumps.

[0040] It is worth noting that after the snap-fit ​​component 9 and the fixing component 8 are snap-fitted and fixed, there is a gap between the adjacent frame housing 3, making it even more impossible for the photovoltaic panels 1 installed inside the frame housing 3 to make contact.

[0041] The core advantage of this connection method lies in its creation and maintenance of a constant and reliable rigid gap between the upper and lower photovoltaic panels 1 through the hard contact between the snap-fit ​​plate 92 and the end face of the fixing sleeve 82. This gap eliminates any contact friction between the component surfaces, whether direct contact or indirect friction through the soft pad. Simultaneously, the entire stack is connected by multiple such rigid connection points on all four sides, forming a stable frame structure with significantly superior resistance to tilting and collapse compared to traditional soft pad isolation methods, greatly improving the safety of transportation and storage. Example 4

[0042] like Figure 1-13 As shown, based on the above embodiments, this embodiment elaborates on various different situations, selecting the materials and processing techniques for the parts to adapt to different usage scenarios: Regarding the sandwich assembly 6: the honeycomb structure panel of the upper sandwich 61 can be integrally molded using carbon fiber reinforced composite material through a molding process. Carbon fiber material has extremely high specific strength and specific modulus, which can provide rigidity and fatigue resistance exceeding that of metals while further reducing the weight of the frame, making it particularly suitable for large ground power plants or load-sensitive roof projects.

[0043] The elastic honeycomb panel of the lower interlayer 62 can be made of high-performance polyimide foam material. In addition to its excellent cushioning properties, this material also possesses superior high and low temperature resistance (operating temperature range from -200°C to 300°C), inherent flame retardancy, and extremely low moisture absorption. This makes it suitable for harsh environments such as deserts and plateaus with extreme diurnal temperature variations or special fire and moisture protection requirements. The top partition 623 can utilize a metal foil composite layer to enhance thermal management performance.

[0044] The rigid support column in the support component 63 can be made of high-hardness ceramic material, whose excellent wear resistance and stability ensure that the accuracy of the support point remains unchanged under long-term repeated stacking use.

[0045] Considering the corrosive environment of marine or industrial settings, key metal components such as the retaining sleeve 82, locking disc 92, and locking post 94 can be made of stainless steel or alloys with special anti-corrosion treatment. To obtain a more precise and stable preload force, the helical spring inside the retaining assembly 8 can be replaced with a set of mating disc springs. Disc springs have a smoother load-displacement curve, provide a nearly constant locking force, and offer better resistance to relaxation.

[0046] To facilitate quick and accurate alignment and stacking on-site, small permanent magnets (such as neodymium iron boron magnets) can be embedded beside the mounting slot 7 on the upper surface of the frame housing 3, while magnetic conductive sheets are embedded in corresponding positions on the card plate 92. When the upper and lower frame edges are close together, the magnetic force will generate an attraction and guiding effect, which can automatically guide the card post 94 to align with the mating slot 85, greatly improving the efficiency and accuracy of stacking operations.

[0047] Furthermore, in this embodiment, the sealing of the lower surface mounting groove 7 can also employ the same concealed adhesive injection process as the upper surface. That is, before installing the snap-fit ​​assembly 9, sealant is injected through the adhesive supply port 44, so that the base post portion of the snap-fit ​​assembly 9 is covered and bonded by the adhesive. In this way, all possible channels of contact between the entire frame system and the external environment are reliably sealed, achieving all-round protection.

[0048] In summary, this invention innovatively integrates three major functions—concealed sealing, mechanical reinforcement, and rigid stacking—through an integrated frame structure design. It not only protects structural bonding points from the root, extending product lifespan, but also significantly enhances the frame's load-bearing and impact resistance through a biomimetic honeycomb interlayer. Furthermore, it revolutionizes the stacking method of photovoltaic modules, enabling safe, efficient, and damage-free transportation and storage. This solution has significant practicality and can effectively reduce the maintenance and operating costs throughout the entire lifecycle of photovoltaic systems.

[0049] The technical features disclosed above are not limited to combinations of the disclosed features with other features. Those skilled in the art can also make other combinations of the technical features according to the purpose of this disclosure, in order to achieve the objectives of this disclosure. The description herein is provided to enable those skilled in the art to implement or use the contents of this disclosure. Various modifications to the contents of this disclosure will be readily apparent to those skilled in the art, and the general principles defined herein can be applied to other variations without departing from the scope of this disclosure.

Claims

1. A high-strength photovoltaic frame based on a honeycomb sandwich structure, characterized in that, It includes a photovoltaic panel (1), a wiring box (2), a frame shell (3), a fixing groove (4), a mounting cavity (5), a sandwich assembly (6), a mounting groove (7), a fixing assembly (8), and a snap-fit ​​assembly (9); A wiring box (2) is provided on the back of the photovoltaic panel (1). The frame shell (3) is arranged around the perimeter of the photovoltaic panel (1). The fixing groove (4) is opened on the inner side of the frame shell (3). The mounting cavity (5) is opened in the lower part of the frame shell (3). The interlayer assembly (6) is installed in the mounting cavity (5). The mounting groove (7) is opened on the upper and lower sides of the frame shell (3). The fixing assembly (8) is installed in the mounting groove (7) on the upper side of the frame shell (3). The snap-fit ​​assembly (9) is installed in the mounting groove (7) on the lower side of the frame shell (3). The frame shell (3) is snapped onto the four sides of the photovoltaic panel (1). By partitioning the frame shell (3), glue is injected and fixed sequentially. The sandwich assembly (6) uses a double-layer honeycomb structure to disperse and weaken the external stress on the photovoltaic panel (1). During transportation and stacking, the snap-fit ​​assembly (9) installed on the frame shell (3) is fixed in the fixing assembly (8) of the lower frame shell (3), so that there is a gap between adjacent photovoltaic panels (1).

2. The high-strength photovoltaic frame based on a honeycomb sandwich structure according to claim 1, characterized in that: The cross-sectional shape of the fixing groove (4) is set to a rectangle, the depth value of the fixing groove (4) is set to 2 / 3 of the width value of the frame shell (3), the fixing groove (4) is arranged in a linear array on the frame shell (3), and adjacent fixing grooves (4) are not connected to each other.

3. The high-strength photovoltaic frame based on a honeycomb sandwich structure according to claim 1, characterized in that: The fixing groove (4) has an adhesive groove (41) on its upper surface. The cross-sectional shape of the adhesive groove (41) is an isosceles trapezoid. An overflow groove (42) is provided on the side of the adhesive groove (41). The overflow groove (42) is circular. A supply channel (43) is provided on the upper surface of the adhesive groove (41). One end of the supply channel (43) is provided with a glue inlet (44). The glue inlet (44) is funnel-shaped. An adhesive bevel (45) is provided on the upper edge of the fixing groove (4). One end of the overflow groove (42) is connected to the adhesive bevel (45).

4. The high-strength photovoltaic frame based on a honeycomb sandwich structure according to claim 1, characterized in that: The mezzanine assembly (6) includes an upper mezzanine (61), a lower mezzanine (62), and a support assembly (63). The upper interlayer (61) is disposed on the upper part of the mounting cavity (5), the lower interlayer (62) is installed below the upper interlayer (61), and the support assembly (63) is installed inside the upper interlayer (61).

5. The high-strength photovoltaic frame based on a honeycomb sandwich structure according to claim 4, characterized in that: The upper interlayer (61) includes an upper support frame (611) and an upper support slot (612). The upper support frame (611) is made of a rigid material and is honeycomb shaped. The upper support slot (612) is opened inside the upper support frame (611).

6. The high-strength photovoltaic frame based on a honeycomb sandwich structure according to claim 4, characterized in that: The lower interlayer (62) includes a lower support frame (621), a lower support slot (622), and a partition plate (623). The lower support frame (621) is made of soft material and is honeycomb shaped. The lower support slot (622) is opened inside the lower support frame (621). The lower support frame (621) and the upper support frame (611) are staggered. The axis of the lower support slot (622) coincides with the central axis of the triangle formed by the axes of the three upper support slots (612). The partition plate (623) is installed on the lower support frame (621).

7. The high-strength photovoltaic frame based on a honeycomb sandwich structure according to claim 4, characterized in that: The support assembly (63) includes a support column (631) and a contact head (632). The support column (631) is installed in the middle of the upper support slot (612), and the axis of the support column (631) and the axis of the upper support slot (612) are aligned. The contact head (632) is installed on the support column (631), and the cross-sectional shape of the contact head (632) is set as trapezoidal.

8. The high-strength photovoltaic frame based on a honeycomb sandwich structure according to claim 1, characterized in that: The fixing component (8) includes a fixing threaded post (81), a fixing sleeve (82), a return spring (83), a pressing block (84), and a mating groove (85); The fixed threaded post (81) is installed in the mounting groove (7) on the outer shell (3), the fixed sleeve (82) is installed on the fixed threaded post (81), the reset spring (83) is installed in the empty groove on the inner side of the fixed sleeve (82), the pressing block (84) is installed at one end of the reset spring (83), and the mating groove (85) is opened on the fixed sleeve (82).

9. The high-strength photovoltaic frame based on a honeycomb sandwich structure according to claim 8, characterized in that: The upper edge of the extrusion block (84) is provided with a contact arc surface (841).

10. The high-strength photovoltaic frame based on a honeycomb sandwich structure according to claim 1, characterized in that: The snap-fit ​​assembly (9) includes a snap-fit ​​threaded post (91), a snap-fit ​​disc (92), a mating ring (93), a snap-fit ​​post (94), and a mating arc surface (95). The snap-fit ​​threaded post (91) is installed in the mounting groove (7) below the frame housing (3), the snap-fit ​​plate (92) is located below the snap-fit ​​threaded post (91), the mating ring (93) is installed below the snap-fit ​​plate (92), the snap-fit ​​post (94) is installed below the snap-fit ​​plate (92), and the mating arc surface (95) is located on the bottom surface of the snap-fit ​​post (94).

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