A limiting self-locking structure for a double-layer solar panel
Patent Information
- Application Number
- CN202521797611.3
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-08-22
- Publication Date
- 2026-10-20
- Estimated Expiration
- 2035-08-22
AI Technical Summary
[0005]本申请提供一种用于双层太阳能板的限位自锁结构，以解决双层太阳能板的收纳限位效果不佳的问题
[0028]由上述内容可知，本申请提供一种用于双层太阳能板的限位自锁结构，所述结构包括第一限位组件，所述第一限位组件设置在双层太阳能板的底板上；所述双层太阳能板包括第一太阳能板以及第二太阳能板，所述第一太阳能板位于所述第二太阳能板的上方，所述第一太阳能板以及第二太阳能板通过转轴调节翻转角度以及抬起高度；第二限位组件，所述第二限位组件分别设置在所述第一太阳能板的侧边以及第二太阳能板的侧边，所述第二限位组件与所述第一限位组件的设置位置相互对应；当所述双层太阳能板收纳时，所述第二限位组件与所述第一限位组件卡接。本申请通过上述结构解决了双层太阳能板的收纳限位效果不佳的问题。
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Figure CN224875024U_ABST
Abstract
Description
Technical Field
[0001] This application relates to the field of solar panel technology, and more particularly to a self-locking structure for limiting a double-layer solar panel. Background Technology
[0002] In the field of renewable energy applications, solar panels, as core energy conversion devices, have always had space utilization and structural reliability as important directions for technological optimization. To meet the energy demands of mobile devices and miniaturized devices with limited installation space, existing technologies have proposed structural designs that utilize a rotating shaft mechanism to achieve the stacking of double-layer solar panels. This type of design sets up rotatable double-layer solar panel modules on a single substrate, using a rotating shaft mechanism to realize the unfolding and retraction functions of the solar panels, thereby significantly increasing the coverage density of photovoltaic modules within the same substrate area.
[0003] However, existing double-layer solar panel hinge structures still face key technological bottlenecks in practical applications. Specifically, when the solar panel transitions from an unfolded to a retracted state, precise control of the hinge mechanism's rotation amplitude is difficult. Excessive rotation can lead to unintended contact between the upper solar panel and the lower substrate or adjacent components, causing interlayer friction, collisions, and even structural damage. If mechanical limiting devices are used to forcibly restrict the rotation amplitude to avoid physical interference, the hinge mechanism will operate under maximum stress for extended periods. This design contradiction causes the hinge components to endure cyclical extreme loads during repeated retraction, ultimately leading to metal fatigue accumulation and problems such as hinge breakage or transmission failure.
[0004] The aforementioned technical shortcomings directly limit the reliability of the double-layer solar panel structure in practical applications. Especially in mobile scenarios requiring frequent deployment and folding, the lifespan of the hinge has become a key factor restricting the commercialization of this technology. Therefore, optimizing the mechanical transmission path of the hinge mechanism and reducing stress concentration under extreme conditions while ensuring effective folding of the double-layer solar panels has become a pressing technical challenge in this field. Utility Model Content
[0005] This application provides a self-locking structure for limiting double-layer solar panels to solve the problem of poor storage and limiting effect of double-layer solar panels.
[0006] The structure includes:
[0007] A first limiting component is disposed on the bottom plate of the double-layer solar panel; the double-layer solar panel includes a first solar panel and a second solar panel, the first solar panel is located above the second solar panel, and the first solar panel and the second solar panel are adjusted in rotation angle and lifting height by a rotating shaft;
[0008] The second limiting component is respectively disposed on the side of the first solar panel and the side of the second solar panel, and the second limiting component is disposed in a position corresponding to the first limiting component; when the double-layer solar panel is stored, the second limiting component is engaged with the first limiting component.
[0009] Preferably, the first limiting component includes:
[0010] The first sub-limiting component is disposed on the bottom plate of the double-layer solar panel;
[0011] The second sub-limiting component is respectively disposed on the bottom plate of the double-layer solar panel, and the second sub-limiting component is disposed opposite to the first sub-limiting component. The first sub-limiting component and the second sub-limiting component are disposed on the two sides of the flip surface of the double-layer solar panel, respectively. The first limiting component and the second sub-limiting component have the same structure.
[0012] Preferably, the second limiting component includes:
[0013] The third sub-limiting component is disposed on the same side as the first sub-limiting component;
[0014] A fourth sub-limiting component is disposed on the same side as the second sub-limiting component; the third sub-limiting component has the same structure as the fourth sub-limiting component;
[0015] When the double-layer solar panel is stored, the first sub-limiting component engages with the third sub-limiting component, and the second sub-limiting component engages with the fourth sub-limiting component.
[0016] Preferably, the first sub-limiting component includes a limiting plate, which is disposed on the bottom plate of the double-layer solar panel, and the limiting plate is provided with a plurality of limiting holes;
[0017] The third sub-limiting component includes several limiting balls. When the double-layer solar panel is stored, the limiting balls on the third sub-limiting component are engaged in the limiting holes on the first sub-limiting component.
[0018] Preferably, the limiting hole includes a first limiting hole and a second limiting hole, both of which are disposed on the limiting plate, with the first limiting hole located above the second limiting hole;
[0019] When the double-layer solar panel is stored, all the limiting balls on the third sub-limiting component are respectively engaged in the first limiting hole and the second limiting hole.
[0020] Preferably, the limiting ball comprises:
[0021] The first limiting ball is rotatably disposed on the side of the first solar panel;
[0022] The second limiting ball is rotatably disposed on the side of the second solar panel;
[0023] When the double-layer solar panel is stored, the first limiting ball is engaged in the first limiting hole, and the second limiting ball is engaged in the second limiting hole.
[0024] Preferably, a first groove is provided on the side of the first solar panel, and a plurality of springs are provided inside the first groove. The opening size of the first groove is smaller than the inner size of the first groove, and the first limiting ball is embedded in the first groove.
[0025] The second solar panel has a second groove on its side, and a number of springs are installed inside the second groove. The opening size of the second groove is smaller than the internal size of the groove. The second limiting ball is embedded in the second groove.
[0026] Preferably, the limiting plate is connected to the bottom plate of the double-layer solar panel by bolts.
[0027] Preferably, the first sub-limiting component further includes a limiting base plate, which is welded to the bottom of the limiting plate and connected to the base plate of the double-layer solar panel by bolts.
[0028] As described above, this application provides a self-locking structure for limiting a double-layer solar panel. The structure includes a first limiting component disposed on the base plate of the double-layer solar panel. The double-layer solar panel includes a first solar panel and a second solar panel, with the first solar panel positioned above the second solar panel. The first and second solar panels are adjustable in rotation angle and lifting height via a pivot. A second limiting component is disposed on the sides of both the first and second solar panels, with their positions corresponding to the first limiting component. When the double-layer solar panel is retracted, the second limiting component engages with the first limiting component. This application solves the problem of poor limiting effect during the retraction of double-layer solar panels through this structure. Attached Figure Description
[0029] To more clearly illustrate the technical solution of this application, the drawings used in the embodiments will be briefly introduced below. Obviously, for those skilled in the art, other drawings can be obtained based on these drawings without creative effort.
[0030] Figure 1 This is a three-dimensional structural diagram of a self-locking limiting structure for a double-layer solar panel according to this application;
[0031] Figure 2 This is a schematic diagram of the main structure when the double-layer solar panels are stored.
[0032] Figure 3 This is a schematic diagram of the first sub-limiting component in a self-locking structure for limiting a double-layer solar panel according to this application;
[0033] Figure 4 This is a top view of the double-layer solar panel structure when it is unfolded.
[0034] Figure 5 This is a partial structural diagram of the third sub-limiting component in a self-locking structure for limiting a double-layer solar panel according to this application. Detailed Implementation
[0035] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.
[0036] It should be noted that the brief descriptions of terms in this application are only for the convenience of understanding the embodiments described below, and are not intended to limit the embodiments of this application. Unless otherwise stated, these terms should be understood in their ordinary and common meaning.
[0037] It should be noted that, in this application, the terms "exemplary" or "for example" are used to indicate that something is being described as an example, illustration, or illustration. Any embodiment or design described as "exemplary" or "for example" in this application should not be construed as being more preferred or advantageous than other embodiments or design solutions. Specifically, the use of terms such as "exemplary" or "for example" is intended to present the relevant concepts in a concrete manner.
[0038] In the field of renewable energy applications, solar photovoltaic technology, as a core solution for clean energy conversion, has always been a key area of focus for the industry in terms of structural design and space utilization efficiency. With the rapid development of mobile electronic devices, portable power generation systems, and space-constrained applications, higher demands are being placed on the miniaturization, lightweighting, and foldability of solar energy collection devices. To address this technological need, existing technologies have developed foldable solar panel designs based on hinge mechanisms. These designs integrate multi-layer photovoltaic modules on a limited substrate area through movable connections, enabling the conversion between unfolded operation and folded storage when idle.
[0039] Existing technologies primarily employ mechanical shafts as the core motion mechanism for double-layer solar panels. A typical structure includes a main shaft fixed to a base, rotating components connected to the upper solar panel, and necessary limiting structures. While this design theoretically increases the coverage of photovoltaic modules per unit area, it exposes several key technical bottlenecks in practical engineering applications. First, there is an inherent contradiction between the motion control precision and structural reliability of the shaft mechanism: to achieve a fully retracted state, the shaft needs to provide sufficient rotational freedom, which often leads to spatial interference between the upper module and the lower structure at the end of the movement. Traditional solutions limit the rotation range by setting rigid stops at the end of the shaft's stroke, but this forced limiting method subjectes the shaft system to impact loads during each retraction operation, which, over time, will cause irreversible damage to the material's microstructure.
[0040] More critically, the mechanical transmission path of the existing rotating shaft structure has design flaws. When the solar panel is in the deployed working position, the shaft mainly bears static torque; however, during the retraction process, the shaft needs to simultaneously cope with multi-directional composite loads such as dynamic bending moment, shear force, and potential torsional vibration. This complex stress state leads to excessive stress concentration at specific cross-sections of the shaft, particularly forming high-stress zones at the connection between the shaft and the substrate, and in the shoulder transition area. Although existing technologies alleviate this problem by increasing the cross-sectional dimensions of the material or using high-strength alloys, this inevitably brings derivative problems such as increased mechanism weight and increased moment of inertia, further exacerbating the difficulty of motion control.
[0041] From a materials science perspective, the failure mechanism of traditional rotating shaft structures under cyclic ultimate loads mainly manifests as follows: dislocation slip occurs in the metal lattice under alternating stress, gradually forming microcrack initiations with increasing operating cycles, ultimately leading to fatigue fracture. This phenomenon is particularly pronounced in outdoor environments with drastic temperature changes, as thermal stress couples with mechanical stress, accelerating material degradation. Furthermore, existing rotating shaft mechanisms lack effective damping and buffering mechanisms, preventing the effective dissipation of kinetic energy during the retraction process and further amplifying the impact effect.
[0042] The aforementioned technical shortcomings are particularly pronounced in applications requiring frequent deployment / retraction, such as mobile platforms like vehicle-mounted solar systems and deployable outdoor power supply devices. Under these conditions, the hinge mechanism must not only meet basic motion requirements but also possess sufficient fatigue life and adaptability to harsh environments. The prevalent issue of early hinge failure in current commercial products severely hinders the widespread adoption of double-layer solar panel structures in high-end applications.
[0043] Based on the above problems, this application provides the following implementation method.
[0044] See Figure 1 as well as Figure 2 As can be seen, this embodiment provides a self-locking structure for limiting a double-layer solar panel. The structure includes a first limiting component 100 and a second limiting component 200. The first limiting component 100 is disposed on the bottom plate of the double-layer solar panel, which includes a first solar panel and a second solar panel. The second limiting component 200 is disposed on the first solar panel and the second solar panel respectively. When the solar panel needs to be stored, the second limiting component 200 will engage with the first limiting component 100 as the double-layer solar panel slowly falls, thereby achieving self-locking of the double-layer solar panel and preventing unnecessary friction caused by excessive storage of the double-layer solar panel.
[0045] join Figure 1 , Figure 2 , Figure 3 as well as Figure 4 Furthermore, in some embodiments, the first limiting component 100 is configured to consist of a first sub-limiting component 110 and a second sub-limiting component 120 located on both sides of the double-layer solar panel. Correspondingly, a third sub-limiting component 210 and a fourth sub-limiting component 220 are provided on both sides of the first solar panel and the second solar panel. When the double-layer solar panel needs to be stored, the first sub-limiting component 110 engages with the third sub-limiting component 210, and the second sub-limiting component 120 engages with the fourth sub-limiting component 220, thereby achieving double-sided self-locking and further improving the self-locking effect.
[0046] The first limiting component 100 and the second sub-limiting component 120 have the same structure, and the third sub-limiting component 210 and the fourth sub-limiting component 220 have the same structure.
[0047] See Figure 5Furthermore, in some embodiments, the first sub-limiting component 110 is composed of a limiting plate 111, a plurality of limiting holes, and a limiting base plate 114. The limiting base plate 114 is bolted to the base plate of the double-layer solar panel to set the first sub-limiting component 110 on the base plate of the double-layer solar panel. Correspondingly, the third sub-limiting component 210 is provided with a plurality of limiting balls, wherein each limiting ball corresponds to a corresponding limiting hole.
[0048] This can be understood as follows: when it is necessary to store the double-layer solar panel, the limiting ball engages with the corresponding limiting hole.
[0049] Furthermore, in some embodiments, the limiting holes on the first sub-limiting component 110 include a first limiting hole 112 and a second limiting hole 113, both of which are disposed on the limiting plate 111, with the first limiting hole 112 located above the second limiting hole 113; the limiting ball includes a first limiting ball 211 and a second limiting ball 212, with the first limiting ball 211 rotatably disposed on the side of the first solar panel and the second limiting ball 212 rotatably disposed on the side of the second solar panel; when the double-layer solar panel is stored, the first limiting ball 211 is engaged in the first limiting hole 112, and the second limiting ball 212 is engaged in the second limiting hole 113.
[0050] Furthermore, in some embodiments, a first groove is provided on the side of the first solar panel, and a plurality of springs are provided inside the first groove. The opening size of the first groove is smaller than the inner size of the first groove, and the first limiting ball 211 is embedded in the first groove; a second groove is provided on the side of the second solar panel, and a plurality of springs are provided inside the second groove. The opening size of the second groove is smaller than the inner size of the second groove, and the second limiting ball 212 is embedded in the second groove.
[0051] When the double-layer solar panel needs to be stored, the second solar panel rotates downward and presses the corresponding limiting ball with downward pressure, and also presses the spring in the groove to achieve locking. At the same time, the first solar panel also rotates downward and presses the corresponding limiting ball, thus locking itself in the corresponding groove.
[0052] When the double-layer solar panel needs to be unfolded, only the matching lifting shaft needs to apply an upward thrust to push the limiting ball out of the groove, thereby realizing the unfolding of the double-layer solar panel.
[0053] It should be noted that the limiting in this embodiment is based on the controllability of the rotating shaft used for lifting. It can be understood as self-locking at the end of the rotating shaft, and the self-locking process corresponds to the rotation of the rotating shaft.
[0054] For ease of explanation, the above description has been provided in conjunction with specific embodiments. However, the discussion in some embodiments is not intended to be exhaustive or to limit the embodiments to the specific forms disclosed above. Various modifications and variations can be obtained based on the above teachings. The selection and description of the above embodiments are for the purpose of better explaining the contents of this disclosure, thereby enabling those skilled in the art to better utilize the embodiments.
Claims
1. A self-locking structure for limiting a double-layer solar panel, characterized in that, The structure includes: A first limiting component (100) is disposed on the bottom plate of the double-layer solar panel; the double-layer solar panel includes a first solar panel and a second solar panel, the first solar panel is located above the second solar panel, and the first solar panel and the second solar panel are adjusted in rotation angle and lifting height by a rotating shaft; The second limiting component (200) is respectively disposed on the side of the first solar panel and the side of the second solar panel. The second limiting component (200) and the first limiting component (100) are respectively disposed in the same position. When the double-layer solar panel is stored, the second limiting component (200) is engaged with the first limiting component (100).
2. The self-locking structure for limiting a double-layer solar panel according to claim 1, characterized in that, The first limiting component (100) includes: The first sub-limiting component (110) is disposed on the bottom plate of the double-layer solar panel; The second sub-limiting component (120) is respectively disposed on the bottom plate of the double-layer solar panel, and the second sub-limiting component (120) is disposed opposite to the first sub-limiting component (110). The first sub-limiting component (110) and the second sub-limiting component (120) are disposed on the two sides of the flip surface of the double-layer solar panel, respectively. The first sub-limiting component (110) and the second sub-limiting component (120) have the same structure.
3. The self-locking structure for limiting a double-layer solar panel according to claim 2, characterized in that, The second limiting component (200) includes: The third sub-limiting component (210) is disposed on the same side as the first sub-limiting component (110); The fourth sub-limiting component (220) is disposed on the same side as the second sub-limiting component (120); the third sub-limiting component (210) has the same structure as the fourth sub-limiting component (220); When the double-layer solar panel is stored, the first sub-limiting component (110) engages with the third sub-limiting component (210), and the second sub-limiting component (120) engages with the fourth sub-limiting component (220).
4. The self-locking structure for limiting a double-layer solar panel according to claim 3, characterized in that, The first sub-limiting component (110) includes a limiting plate (111), which is disposed on the bottom plate of the double-layer solar panel and has a plurality of limiting holes. The third sub-limiting component (210) includes a plurality of limiting balls. When the double-layer solar panel is stored, the limiting balls on the third sub-limiting component (210) are engaged in the limiting holes on the first sub-limiting component (110).
5. A self-locking structure for limiting a double-layer solar panel according to claim 4, characterized in that, The limiting hole includes a first limiting hole (112) and a second limiting hole (113). The first limiting hole (112) and the second limiting hole (113) are both disposed on the limiting plate (111), and the first limiting hole (112) is located above the second limiting hole (113). When the double-layer solar panel is stored, all the limiting balls on the third sub-limiting component (210) are respectively engaged in the first limiting hole (112) and the second limiting hole (113).
6. A self-locking structure for limiting a double-layer solar panel according to claim 5, characterized in that, The limiting ball includes: The first limiting ball (211) is rotatably disposed on the side of the first solar panel; The second limiting ball (212) is rotatably disposed on the side of the second solar panel; When the double-layer solar panel is stored, the first limiting ball (211) is engaged in the first limiting hole (112), and the second limiting ball (212) is engaged in the second limiting hole (113).
7. A self-locking structure for limiting a double-layer solar panel according to claim 6, characterized in that, The first solar panel has a first groove on its side, and a number of springs are provided inside the first groove. The opening size of the first groove is smaller than the inner size of the first groove. The first limiting ball (211) is embedded in the first groove. The second solar panel has a second groove on its side, and a number of springs are provided inside the second groove. The opening size of the second groove is smaller than the internal size of the second groove. The second limiting ball (212) is embedded in the second groove.
8. A self-locking structure for limiting a double-layer solar panel according to claim 4, characterized in that, The limiting plate (111) is connected to the bottom plate of the double-layer solar panel by bolts.
9. A self-locking structure for limiting a double-layer solar panel according to claim 8, characterized in that, The first sub-limiting component (110) also includes a limiting base plate (114), which is welded to the bottom of the limiting plate (111) and is connected to the base plate of the double-layer solar panel by bolts.