Photovoltaic panel and portable photovoltaic device

Abstract

This utility model provides a photovoltaic panel and a portable photovoltaic device, relating to the field of photovoltaic device technology. The photovoltaic panel includes: a photovoltaic panel body, comprising a light-receiving surface and a back-lighting surface; a junction box, comprising a first box and a second box connected together, the first box being disposed on the light-receiving surface and the second box being disposed on the back-lighting surface, with a mounting cavity formed between the second box and the first box; a lead-out wire harness, one end of which is disposed in the mounting cavity and electrically connected to the photovoltaic panel body; and a connector interface disposed at the other end of the lead-out wire harness. In the technical solution of this utility model, the connector interface and the junction box adopt a separate design. By using the lead-out wire harness, the connector interface does not need to be directly mounted on the junction box, thus increasing the flexibility of the connector interface. This design is less prone to dust and water accumulation; users can quickly and accurately locate the connector interface, which helps reduce the difficulty of docking operations.

Description

Technical Field

[0001] This utility model relates to the field of photovoltaic device technology, and more specifically, to a photovoltaic panel and a portable photovoltaic device. Background Technology

[0002] With the increasing demand for off-grid power supply in outdoor operations, emergency rescue, and other scenarios, portable photovoltaic (PV) devices, as an important branch of PV technology, have experienced rapid development. These devices prioritize portability in their design, typically employing miniaturized and lightweight structures. They are highly mobile, easy to operate, and can be quickly deployed in outdoor, emergency, and other off-grid environments. By integrating PV power generation, energy storage, and power control functions, they meet the power supply needs of various electrical devices.

[0003] In portable photovoltaic devices using related technologies, the junction box and connector interface, which are key components for power output, are typically integrated into the photovoltaic panel, and the connector interface and junction box are fixedly connected. This design means the connector interface is in a fixed position, making it prone to dust and water accumulation and difficult to align. Utility Model Content

[0004] In order to solve or improve the technical problems of fixed connector interface position, easy accumulation of dust and water and difficulty in alignment, one objective of this utility model is to provide a photovoltaic panel.

[0005] Another objective of this invention is to provide a portable photovoltaic device.

[0006] To achieve the above objectives, the first aspect of this utility model provides a photovoltaic panel, comprising: a photovoltaic panel body, including a light-receiving surface and a back-lighting surface; a junction box, including a first box body and a second box body connected together, the first box body being disposed on the light-receiving surface and the second box body being disposed on the back-lighting surface, and an installation cavity being formed between the second box body and the first box body; a lead wire harness, one end of which is disposed in the installation cavity and electrically connected to the photovoltaic panel body; and a connector interface disposed at the other end of the lead wire harness.

[0007] This utility model aims to provide a photovoltaic panel with a separate connector interface and junction box design. By extending the wiring harness, the connector interface does not need to be directly mounted on the junction box, thus increasing its flexibility. The advantages of this design are: First, the connector interface position is flexible and adjustable, reducing the risk of dust and water accumulation, and making it easier for users to clean, largely avoiding interface contamination or short circuit risks. Second, users can quickly and accurately locate the connector interface, reducing the difficulty of connection operations. Third, after external cables are plugged into the connector interface, the external cables will not bend backwards due to the photovoltaic panel's placement or external force, improving the cable lifespan and the reliability and safety of the device.

[0008] In some technical solutions, optionally, the junction box is provided with a mounting hole that communicates with the mounting cavity; one end of the lead wire harness away from the connector interface extends into the mounting cavity through the mounting hole; the lead wire harness is provided with a mounting block, at least a portion of which is engaged in the mounting hole.

[0009] In this technical solution, the cooperation between the mounting block and the mounting hole has the following advantages: First, it helps to disperse the stress at the end of the lead wire harness, effectively avoiding stress concentration at the end of the wire harness due to bending; second, it can limit the lead wire harness, preventing excessive swinging of the wire harness due to external force during use, which helps to reduce fatigue damage to the internal conductors.

[0010] In some technical solutions, optionally, a first limiting groove is provided on the wall of the mounting hole, and the first limiting groove communicates with the mounting cavity; a limiting boss is provided on the mounting block, and the limiting boss is engaged in the first limiting groove.

[0011] In this technical solution, the detachable connection between the lead wire harness and the junction box can be achieved through the cooperation of the limiting boss and the first limiting groove. When the limiting boss is engaged in the first limiting groove, the lead wire harness is fixed to the junction box. This design can limit the lead wire harness, preventing excessive swinging of the harness due to external forces during use, and helping to reduce fatigue damage to the internal wires.

[0012] In some technical solutions, the limiting boss may optionally be located at the end of the mounting block away from the connector interface.

[0013] In this technical solution, by limiting the position of the limiting boss, the mounting block can be prevented from excessively extending into the mounting cavity, which helps to free up space in the mounting cavity and improve the space utilization rate inside the junction box. When the limiting boss is engaged in the first limiting groove, the mounting block can seal the mounting hole, making the mounting cavity a relatively sealed space, which protects the electronic components.

[0014] In some technical solutions, optionally, the mounting block is also provided with a second limiting groove, and the wall of the mounting hole is engaged in the second limiting groove.

[0015] In this technical solution, when the lead-out harness and the junction box are connected, the limiting boss is engaged in the first limiting groove, and the wall of the mounting hole is engaged in the second limiting groove. By setting up a "double engaging structure," firstly, it helps to improve the connection strength between the lead-out harness and the junction box in the connected state; secondly, it helps to improve the limiting effect on the harness, preventing excessive swinging of the harness due to external forces during use, thereby reducing fatigue damage to the internal wires.

[0016] In some technical solutions, the photovoltaic panel may optionally include: a dust plug, which is detachably connected to the connector interface; when the dust plug and the connector interface are connected, the dust plug is used to seal the connector interface.

[0017] In this technical solution, when the connector interface is not needed, at least a portion of the dust plug is placed inside the connector interface to seal it. The dust plug then functions as a waterproof and dustproof barrier, effectively preventing interface contamination. When the connector interface needs to be connected to an external cable, the dust plug can be removed, making the operation simple, convenient, and quick.

[0018] In some technical solutions, the photovoltaic panel may optionally include: a collar fitted onto the lead wire harness; and a connecting strip, one end of which is connected to the collar and the other end of which is connected to a dust plug.

[0019] In this technical solution, by setting a loop and a connecting strap, the dust plug can be effectively prevented from being lost due to factors such as careless placement, being blown off by the wind, or negligence in storage during outdoor use, which helps to improve the user experience.

[0020] In some technical solutions, the photovoltaic panel may optionally include a sunlight indicator lens, which is located in the first housing and has a scale on it to help adjust the placement angle of the photovoltaic panel.

[0021] In this technical solution, by setting up a sunlight indicator lens, users can adjust the placement angle of the photovoltaic panel according to the positional relationship between the light spot and the scale, so that the photovoltaic panel faces the light and ensures that the photovoltaic panel has a sufficiently large power generation capacity.

[0022] In some technical solutions, optionally, the first housing is provided with a mounting groove, and the sunlight indicator lens is located in the mounting groove; the main lens is located at the opening of the mounting groove.

[0023] In this technical solution, by setting a main lens, firstly, it is used to seal the opening of the mounting slot to ensure that the sunlight indicator lens will not fall off the mounting slot; secondly, it helps to prevent stray light (such as diffuse reflection light under strong midday light) interference, and users can quickly identify the alignment relationship between the light spot (light dot) and the scale even in strong light environment, which helps to reduce adjustment error.

[0024] The second aspect of this utility model provides a portable photovoltaic device, comprising: a photovoltaic panel as described in any of the above technical solutions; and a folding frame connected to the photovoltaic panel.

[0025] Since portable photovoltaic devices include photovoltaic panels as described in any of the above technical solutions, they have the beneficial effects of any of the above technical solutions, which will not be elaborated further here.

[0026] Additional aspects and advantages of the present invention will become apparent in the following description or may be learned by practice of the present invention. Attached Figure Description

[0027] Figure 1 A schematic diagram of a photovoltaic panel according to an embodiment of the present invention is shown;

[0028] Figure 2 An exploded view of a photovoltaic panel according to one embodiment of the present invention is shown;

[0029] Figure 3 A schematic diagram of the connection structure between the lead wire harness and the connector interface according to an embodiment of the present invention is shown;

[0030] Figure 4 An exploded view of a photovoltaic panel according to another embodiment of the present invention is shown;

[0031] Figure 5 A schematic diagram of the connection structure between the first housing and the sunlight indicator lens according to an embodiment of the present invention is shown;

[0032] Figure 6 A schematic diagram of a portable photovoltaic device according to an embodiment of the present invention is shown;

[0033] Figure 7 A schematic diagram of a portable photovoltaic device according to another embodiment of the present invention is shown.

[0034] in, Figures 1 to 7 The correspondence between the reference numerals and component names in the attached drawings is as follows:

[0035] 1: Photovoltaic panel; 10: Photovoltaic panel body; 102: Light-receiving surface; 104: Backlighting surface; 12: Junction box; 122: First box body; 1221: Mounting groove; 124: Second box body; 126: Mounting cavity; 128: Mounting hole; 1281: First limiting groove; 14: Lead-out wire harness; 15: Connector interface; 151: First part; 152: Second part; 153: Insertion positive and negative identification mark; 16: Mounting block; 161: Limiting boss; 162: Second limiting groove; 17: Connector; 181: Dust plug; 182: Collar; 183: Connecting strap; 191: Sunlight indicator lens; 192: Scale; 193: Main lens; 2: Portable photovoltaic device; 20: Folding frame. Detailed Implementation

[0036] To better understand the above-mentioned objectives, features, and advantages of the embodiments of this utility model, the embodiments of this utility model will be further described in detail below with reference to the accompanying drawings and specific embodiments. It should be noted that, unless otherwise specified, the embodiments of this utility model and the features thereof can be combined with each other.

[0037] Many specific details are set forth in the following description in order to provide a full understanding of the present invention. However, embodiments of the present invention may be implemented in other ways different from those described herein. Therefore, the scope of protection of the present invention is not limited to the specific embodiments disclosed below.

[0038] A photovoltaic (PV) device is an energy conversion device that directly converts solar energy into electrical energy through the photovoltaic effect. Its core function is to convert clean solar energy resources into usable electrical energy and provide a stable power output for various electrical devices. It is an important technical means to achieve sustainable energy utilization.

[0039] With the increasing demand for off-grid power supply in outdoor operations, emergency rescue, and other scenarios, portable photovoltaic (PV) devices, as an important branch of PV technology, have experienced rapid development. These devices prioritize portability in their design, typically employing miniaturized and lightweight structures. They are highly mobile, easy to operate, and can be quickly deployed in outdoor, emergency, and other off-grid environments. By integrating PV power generation, energy storage, and power control functions, they meet the power supply needs of various electrical devices.

[0040] Existing portable photovoltaic devices still have several structural design issues that need improvement: to meet the needs of outdoor portability, their photovoltaic panels are usually set at a low position above the ground or placed directly on the ground; at the same time, the junction box and connector interface, which are key components for power output, are usually integrated on the back side (back side) of the photovoltaic panel, and the connector interface and the junction box are fixedly connected.

[0041] This design, with its fixed connector interface position, presents several limitations: When the connector interface faces upwards, it is susceptible to contamination or short circuits due to dust and rainwater accumulation in outdoor environments; when it faces downwards, obstructed visibility makes it difficult for users to quickly locate the interface, increasing the complexity of the connection process. Furthermore, after the connector interface is plugged into external cables, the wiring harness is prone to prolonged bending due to the photovoltaic panel's placement or external force, leading to fatigue damage to the internal conductors, significantly shortening its lifespan, and affecting the reliability and safety of the device.

[0042] This utility model aims to provide a photovoltaic panel and a portable photovoltaic device. The connector interface and the junction box adopt a separate design, and the connector interface does not need to be directly installed on the junction box by leading out the wire harness, which increases the flexibility of the connector interface. The advantages of this design are: First, the position of the connector interface is flexible and adjustable, which reduces the accumulation of dust and water, and makes it easier for users to clean the connector interface, thus largely avoiding the risk of interface contamination or short circuits; Second, users can quickly and accurately locate the position of the connector interface, which helps to reduce the difficulty of docking operations; Third, after the external cable is plugged into the connector interface, the external cable will not be bent backward due to the placement posture of the photovoltaic panel or external force, which helps to improve the service life of the cable and the reliability and safety of the device.

[0043] The following reference Figures 1 to 7 This invention describes a photovoltaic panel and a portable photovoltaic device provided according to some embodiments of the present invention.

[0044] In one embodiment of this utility model, such as Figure 1 and Figure 2 As shown, the photovoltaic panel 1 includes a photovoltaic panel body 10, a junction box 12, a lead wire harness 14, and a connector interface 15.

[0045] The photovoltaic panel body 10 includes a light-receiving surface 102 and a back-lighting surface 104. The junction box 12 includes a first box 122 and a second box 124 connected together. The first box 122 is located on the light-receiving surface 102, and the second box 124 is located on the back-lighting surface 104. A mounting cavity 126 is formed between the second box 124 and the first box 122. One end of a lead-out harness 14 is located within the mounting cavity 126 and is electrically connected to the photovoltaic panel body 10. A connector interface 15 is located at the other end of the lead-out harness 14.

[0046] The photovoltaic panel body 10 is used to convert solar energy into electrical energy through the photovoltaic effect and is the core functional component of the portable photovoltaic device 2. Optionally, the photovoltaic panel body 10 includes a substrate and multiple photovoltaic cells, and the multiple photovoltaic cells are integrated on the substrate in series or parallel. It should be noted that the photovoltaic cells are monocrystalline silicon cells, polycrystalline silicon cells, or thin-film cells.

[0047] The light-receiving surface 102 of the photovoltaic panel body 10 is the side of the photovoltaic panel body 10 facing the light source (usually the sun). The back-lighting surface 104 of the photovoltaic panel body 10 is the side of the photovoltaic panel body 10 facing away from the light source. Optionally, the light-receiving surface 102 and the back-lighting surface 104 of the photovoltaic panel body 10 are two opposite sides.

[0048] It should be noted that the power generation efficiency of the photovoltaic panel body 10 varies depending on its placement angle. The power generation efficiency of the photovoltaic panel body 10 is significantly higher when the light-receiving surface 102 faces the light source than when the back-lighting surface 104 faces the light source.

[0049] Junction box 12 contains multiple electronic components (such as diodes and terminals), and serves as the central hub for the photovoltaic panel 1 to output electrical energy.

[0050] A relatively enclosed mounting cavity 126 is formed between the second housing 124 and the first housing 122. The mounting cavity 126 is used to house electronic components. The junction box 12 can provide a certain degree of protection for the electronic components.

[0051] By placing the first box 122 and the second box 124 on both sides of the photovoltaic panel body 10, firstly, it increases the contact area between the junction box 12 and the photovoltaic panel body 10, thereby improving the connection strength between them; secondly, the first box 122 and the second box 124 can be used to quickly identify the light-receiving surface 102 and the backlight surface 104 of the photovoltaic panel body 10, facilitating users to quickly arrange and correctly position the photovoltaic panel 1; thirdly, it optimizes the spatial layout and improves space utilization. Depending on actual needs, the two boxes can serve as mounting carriers for corresponding components, allowing different components to be integrated onto the junction box 12. For example, one end of the lead wire harness 14 can be connected to the second box 124; the main lens 193 and the sunlight indicator lens 191 can be mounted on the first box 122.

[0052] The main function of the lead-out harness 14 is to prevent the connector interface 15 from being directly mounted on the junction box 12. The connector interface 15 serves as a detachable connection port between the portable photovoltaic device 2 and external devices (such as energy storage devices or electrical appliances), enabling the output and input of electrical energy (such as charging energy storage devices).

[0053] This utility model aims to provide a photovoltaic panel 1 in which the connector interface 15 and the junction box 12 are designed separately. By leading out the wire harness 14, the connector interface 15 does not need to be directly mounted on the junction box 12, thus increasing the flexibility of the connector interface 15. The advantages of this design are as follows: First, the position of the connector interface 15 is flexible and adjustable, making it less prone to dust and water accumulation, and easier for users to clean, largely avoiding the risk of interface contamination or short circuits. Second, users can quickly and accurately locate the connector interface 15, reducing the difficulty of docking operations. Third, after the external cable is plugged into the connector interface 15, the external cable will not be bent backwards due to the placement posture of the photovoltaic panel 1 or external force, which helps to improve the service life of the cable and the reliability and safety of the device.

[0054] In some embodiments, the light-receiving surface 102 of the photovoltaic panel body 10 is optionally provided with a reflective coating to reduce light reflection loss and improve light absorption efficiency.

[0055] Optionally, the reflective coating can be a silicon nitride coating.

[0056] In some embodiments, optionally, such as Figure 2 As shown, the first box 122, the photovoltaic panel body 10 and the second box 124 are detachably connected by connectors 17, which makes it convenient for staff to disassemble and assemble the junction box 12 and facilitates the maintenance or replacement of electronic components inside the mounting cavity 126.

[0057] In some embodiments, the first housing 122 is optionally provided with a first connection hole, the photovoltaic panel body 10 is provided with a second connection hole, and the second housing 124 is provided with a third connection hole.

[0058] The connector 17 is sequentially inserted through the first connecting hole, the second connecting hole and the third connecting hole to achieve a detachable connection between the first box 122, the photovoltaic panel body 10 and the second box 124.

[0059] Alternatively, the connector 17 may be sequentially inserted through the third connecting hole, the second connecting hole, and the first connecting hole to achieve a detachable connection between the first housing 122, the photovoltaic panel body 10, and the second housing 124.

[0060] In one specific embodiment, the connector 17 is a fixing screw.

[0061] One end of the fixing screw has an end stop (head), and the other end of the fixing screw passes through the first connecting hole, the second connecting hole, and the third connecting hole in sequence. The end stop abuts against the side of the first housing 122 away from the photovoltaic panel body 10, and the fixing screw is threadedly connected to the third connecting hole (the third connecting hole is a threaded hole). In this case, the first connecting hole can be a through hole or a threaded hole; the second connecting hole can be a through hole or a threaded hole.

[0062] Alternatively, the other end of the fixing screw may pass through the third connecting hole, the second connecting hole, and the first connecting hole in sequence. The end stop abuts against the side of the second housing 124 away from the photovoltaic panel body 10, and the fixing screw is threadedly connected to the first connecting hole (the first connecting hole is a threaded hole). In this case, the second connecting hole can be a through hole or a threaded hole; the third connecting hole can be a through hole or a threaded hole.

[0063] In one specific embodiment, the connector 17 is a bolt. The bolt includes a shank and a nut. The shank passes sequentially through the first connecting hole, the second connecting hole, and the third connecting hole, or sequentially through the third connecting hole, the second connecting hole, and the first connecting hole. Through the cooperation of the shank and the nut, a detachable connection is achieved between the first housing 122, the photovoltaic panel body 10, and the second housing 124.

[0064] In some embodiments, the connector interface 15 may optionally include two metal pins or two metal slots. The connector interface 15 is electrically connected to an external device via the two metal pins or two metal slots.

[0065] The connector interface 15 employs a foolproof design. When the connector interface 15 includes two metal pins, the two metal pins are of different lengths or thicknesses to achieve the foolproof design and prevent incorrect insertion that could lead to a reverse connection.

[0066] In the case where the connector interface 15 includes two metal slots, the two metal slots have different depths to achieve a foolproof design and avoid misinsertion that could lead to reverse connection.

[0067] In one specific embodiment, the connector interface 15 is provided with a positive and negative identification mark 153, which is used to help the user identify whether the metal pin or the metal slot is the positive or negative terminal.

[0068] In some embodiments, the lead-out harness 14 may optionally include two branch harnesses. One branch harness is a positive electrode harness, and the other branch harness is a negative electrode harness. One end of the positive electrode harness is used to connect to the positive terminal of the photovoltaic panel body 10, and the other end is used to connect to the connector interface 15; one end of the negative electrode harness is used to connect to the negative terminal of the photovoltaic panel body 10, and the other end is used to connect to the connector interface 15.

[0069] It should be noted that both the positive and negative terminals of the photovoltaic panel body 10 are located inside the mounting cavity 126 of the junction box 12. One end of the lead wire harness 14 extends into the mounting cavity 126 and is electrically connected to the photovoltaic panel body 10.

[0070] Optionally, in some embodiments, the lead-out harness 14 is a flexible structure. The connector interface 15 and the lead-out harness 14 are integrally molded with insulating material. The connector interface 15 is located at the head of the lead-out harness 14 and is located outside the mounting cavity 126 of the junction box 12. The tail of the lead-out harness 14 is provided with a slot structure, and is engaged with the junction box 12 through the slot structure to limit the range of motion of the lead-out harness 14.

[0071] In the technical solution of this utility model, the connector interface 15 is moved from inside the junction box 12 to outside the junction box 12, making the plugging operation more convenient, effectively avoiding the problems of water and dust accumulation, and reducing the bending of external cables, which is conducive to extending the service life of the cables.

[0072] In some embodiments, optionally, such as Figure 2 and Figure 4 As shown, the junction box 12 is provided with a mounting hole 128, which communicates with the mounting cavity 126. The end of the lead wire harness 14 away from the connector interface 15 extends into the mounting cavity 126 through the mounting hole 128 and is electrically connected to the photovoltaic panel body 10.

[0073] By providing mounting holes 128, the wire harness 14 can be led out into or out of the mounting cavity 126 of the junction box 12, so that the connector interface 15 and the junction box 12 are designed separately, and the connector interface 15 does not need to be directly set on the junction box 12.

[0074] In one specific embodiment, the mounting hole 128 is provided in the second housing 124 of the junction box 12.

[0075] In one specific embodiment, the mounting hole 128 is provided in the first housing 122 of the junction box 12.

[0076] The lead wire harness 14 is provided with a mounting block 16, and at least a portion of the mounting block 16 is engaged in the mounting hole 128.

[0077] The interaction between the mounting block 16 and the mounting hole 128 has the following advantages: First, it helps to disperse the stress at the end of the lead wire harness 14, effectively preventing stress concentration at the end of the wire due to bending. Second, it can limit the lead wire harness 14, preventing excessive swinging of the harness due to external forces (such as wind or touch) during use, which helps to reduce fatigue damage to the internal wires.

[0078] In some embodiments, the mounting block 16 is optionally fitted onto the lead wire harness 14.

[0079] In some embodiments, the mounting block 16 and the lead wire harness 14 are optionally detachably connected, which facilitates disassembly and assembly by the user and is beneficial for maintenance or replacement.

[0080] In some embodiments, the mounting block 16 and the lead wire harness 14 are optionally integrated. This design helps to further disperse the stress at the end of the lead wire harness 14 and effectively avoid stress concentration at the end of the wire due to bending.

[0081] In some embodiments, optionally, such as Figure 2 , Figure 3 and Figure 4 As shown, the mounting hole 128 has a first limiting groove 1281 on its wall, which communicates with the mounting cavity 126. The mounting block 16 has a limiting boss 161, which is engaged in the first limiting groove 1281.

[0082] The first limiting groove 1281 is formed by the inward recess of the wall of the mounting hole 128. The limiting boss 161 is formed by the outward protrusion of the outer wall of the mounting block 16. Since the first limiting groove 1281 is provided on the wall of the mounting hole 128, the mounting hole 128 is a stepped hole. In addition, the mounting block 16 has a stepped structure.

[0083] The engagement of the limiting boss 161 and the first limiting groove 1281 enables a detachable connection between the lead wire harness 14 and the junction box 12. With the limiting boss 161 engaged within the first limiting groove 1281, the lead wire harness 14 is fixed to the junction box 12. This design effectively limits the movement of the lead wire harness 14, preventing excessive swaying due to external forces during use and reducing fatigue damage to the internal wires.

[0084] In some embodiments, the mounting block 16 and the limiting boss 161 are optionally integrated structures (using an integrated injection molding process). Compared with post-processing (such as detachable connection), they have better mechanical properties and higher connection strength, which helps to reduce the number of parts and improve assembly efficiency.

[0085] In some embodiments, the outer wall of the mounting block 16 is optionally provided with a guide arc surface. The guide arc surface is used to guide the mounting block 16 into the mounting hole 128 to achieve a snap-fit ​​between the mounting block 16 and the mounting hole 128.

[0086] In some embodiments, optionally, such as Figure 2 , Figure 3 and Figure 4As shown, the limiting boss 161 is located at the end of the mounting block 16 away from the connector interface 15.

[0087] This design avoids the mounting block 16 from extending excessively into the mounting cavity 126, which helps to free up space in the mounting cavity 126 and improve the space utilization rate inside the junction box 12. When the limiting boss 161 is engaged in the first limiting groove 1281, the mounting block 16 can seal the mounting hole 128, so that the mounting cavity 126 becomes a relatively sealed space, which protects the electronic components.

[0088] In some embodiments, optionally, such as Figure 2 , Figure 3 and Figure 4 As shown, the mounting block 16 is also provided with a second limiting groove 162, and the hole wall of the mounting hole 128 is engaged in the second limiting groove 162.

[0089] Because the mounting hole 128 has a first limiting groove 1281 on its wall, the mounting hole 128 is a stepped hole. In addition, because the mounting block 16 has a limiting boss 161 and a second limiting groove 162, the mounting block 16 has a stepped structure.

[0090] The detachable connection between the lead wire harness 14 and the junction box 12 is achieved through the interaction between the wall of the mounting hole 128 and the second limiting groove 162. With the wall of the mounting hole 128 engaged within the second limiting groove 162, the lead wire harness 14 is fixed to the junction box 12. This design limits the position of the lead wire harness 14, preventing excessive swaying due to external forces during use and reducing fatigue damage to the internal wires.

[0091] It is important to emphasize that when the lead wire harness 14 and the junction box 12 are connected, the limiting boss 161 is engaged in the first limiting groove 1281, and the wall of the mounting hole 128 is engaged in the second limiting groove 162. By setting up a "double engaging structure", firstly, it helps to improve the connection strength between the lead wire harness 14 and the junction box 12 in the connected state; secondly, it helps to improve the limiting effect on the wire harness, preventing excessive swinging of the wire harness due to external forces during use, thereby reducing fatigue damage to the internal wires.

[0092] In some embodiments, the mounting block 16 may optionally have a wire end softening structure at one end near the connector interface 15. This design helps reduce wire damage caused by hard bending.

[0093] In some embodiments, optionally, such as Figure 2 , Figure 3 and Figure 4As shown, the photovoltaic panel 1 also includes a dust plug 181. The dust plug 181 is detachably connected to the connector interface 15. When the dust plug 181 and the connector interface 15 are connected, the dust plug 181 is used to seal the connector interface 15.

[0094] When connector interface 15 is not needed, at least a portion of dust plug 181 is disposed inside connector interface 15 to seal it. In this case, dust plug 181 serves to prevent water and dust from entering, effectively avoiding interface contamination. When connector interface 15 needs to be connected to an external cable, dust plug 181 can be removed, making the operation simple, convenient, and quick.

[0095] Optionally, the dust plug 181 has a stepped structure to further optimize the sealing effect of the dust plug 181 on the connector interface 15.

[0096] In some embodiments, the connector interface 15 may optionally include a first part 151 and a second part 152 for connection. One end of the first part 151 is connected to the end of the lead wire harness 14 away from the junction box 12, and the other end of the first part 151 is connected to one end of the second part 152, and the other end of the second part 152 is used for connection to an external cable.

[0097] Optionally, a metal pin or metal slot is provided in the second part 152. Optionally, a positive / negative identification mark 153 is provided in the second part 152.

[0098] Optionally, the second part 152 has a higher hardness than the first part 151. The second part 152 is a rigid structure (such as hard plastic) to facilitate the connection of external cables or dust plugs 181.

[0099] The first part 151 has a flexible structure (such as a soft rubber outer sheath). This design helps to further improve the flexibility of the connector interface 15; it can also reduce wire damage caused by hard bending.

[0100] In one specific embodiment, the dust plug 181 is a silicone dust plug.

[0101] In some embodiments, optionally, such as Figure 2 , Figure 3 and Figure 4 As shown, the photovoltaic panel 1 also includes a collar 182 and a connecting strip 183. The collar 182 is fitted onto the lead wire harness 14. One end of the connecting strip 183 is connected to the collar 182, and the other end of the connecting strip 183 is connected to the dust plug 181.

[0102] Optionally, the collar 182 is fixedly sleeved on the lead wire harness 14.

[0103] In one specific embodiment, the collar 182 and the lead wire harness 14 are integrally injection molded, which has good mechanical properties, high connection strength, and is not easily lost.

[0104] Optionally, the collar 182 is slidably fitted onto the lead wire harness 14. The collar 182 can slide relative to the lead wire harness 14. This design can prevent component loss while improving flexibility in the idle state.

[0105] By setting the loop 182 and the connecting strap 183, the dust plug 181 can be effectively prevented from being lost due to factors such as careless placement, being blown off by the wind, or negligence in storage during outdoor use, which helps to improve the user experience.

[0106] In one specific embodiment, the collar 182 is a rubber ring.

[0107] In one specific embodiment, the connecting strip 183 is a rubber connecting strip.

[0108] In some embodiments, optionally, such as Figure 5 As shown, the photovoltaic panel 1 also includes a sunlight indicator lens 191. The sunlight indicator lens 191 is located in the first housing 122, and the sunlight indicator lens 191 has a scale 192 for assisting in adjusting the placement angle of the photovoltaic panel 1.

[0109] By setting up a sunlight indicator lens 191, the user can adjust the placement angle of the photovoltaic panel 1 according to the positional relationship between the light spot and the scale 192, so that the photovoltaic panel 1 faces the light and ensures that the photovoltaic panel 1 has a sufficiently large power generation capacity.

[0110] In some embodiments, optionally, such as Figure 2 and Figure 5 As shown, the first housing 122 is provided with a mounting groove 1221, and the sunlight indicator lens 191 is disposed in the mounting groove 1221. The main lens 193 is provided at the opening of the mounting groove 1221.

[0111] Mounting slot 1221 provides a recessed receiving space for the sunlight indicator lens 191 to ensure the installation accuracy of the sunlight indicator lens 191, thereby improving the accuracy of adjusting the placement angle of the photovoltaic panel 1 through the sunlight indicator lens 191.

[0112] By setting the main lens 193, firstly, it is used to block the opening of the mounting slot 1221 to ensure that the sunlight indicator lens 191 will not fall off the mounting slot 1221; secondly, it helps to prevent stray light (such as diffuse reflection light under strong midday light) interference, and the user can quickly identify the alignment relationship between the light spot (light dot) and the scale 192 even in strong light environment, which helps to reduce adjustment error.

[0113] In some embodiments, the main lens 193 and the first housing 122 are optionally fixedly connected by adhesive bonding, which is simple, convenient and quick to operate.

[0114] In one embodiment of this utility model, such as Figure 6 and Figure 7 As shown, the portable photovoltaic device 2 includes the photovoltaic panel 1 and the folding frame 20 as described in any of the above embodiments. The folding frame 20 is connected to the photovoltaic panel 1.

[0115] Since the portable photovoltaic device 2 includes the photovoltaic panel 1 in any of the above embodiments, it has the beneficial effects of any of the above embodiments, which will not be repeated here.

[0116] The folding frame 20 is rotatably mounted on the photovoltaic panel 1. The folding frame 20 is capable of rotating relative to the photovoltaic panel 1.

[0117] By adjusting the angle between the folding frame 20 and the photovoltaic panel 1, the placement angle of the photovoltaic panel 1 can be changed.

[0118] When the folding frame 20 is in the folded state, the surface of the folding frame 20 is in contact with the surface of the photovoltaic panel 1 to reduce storage space; when the folding frame 20 is in the unfolded state, the folding frame 20 can support the photovoltaic panel 1 so that the photovoltaic panel 1 maintains its current placement angle.

[0119] In this utility model, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance; the term "multiple" refers to two or more unless otherwise explicitly defined. The terms "install," "connect," "join," and "fix" should be interpreted broadly. For example, "connect" can be a fixed connection, a detachable connection, or an integral connection; "join" can be a direct connection or an indirect connection through an intermediate medium. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0120] In the description of this utility model, it should be understood that the terms "upper", "lower", "left", "right", "front", "rear", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or unit referred to must have a specific orientation or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0121] In the description of this specification, the terms "one embodiment," "some embodiments," "specific embodiment," etc., refer to a specific feature, structure, material, or characteristic described in connection with that embodiment or example, which is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0122] The above are merely preferred embodiments of this utility model and are not intended to limit the scope of this utility model. Various modifications and variations can be made to this utility model by those skilled in the art. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A photovoltaic panel, characterized by, include: The photovoltaic panel body includes the light-receiving surface and the back-lighting surface; A junction box includes a first box body and a second box body connected together. The first box body is disposed on the light-receiving surface, and the second box body is disposed on the backlight surface. A mounting cavity is formed between the second box body and the first box body. A lead wire harness is provided, one end of which is located inside the mounting cavity and electrically connected to the photovoltaic panel body; The connector interface is located at the other end of the lead wire harness.

2. The photovoltaic panel according to claim 1, characterized in that, The junction box is provided with a mounting hole, which communicates with the mounting cavity; the end of the lead wire harness away from the connector interface extends into the mounting cavity through the mounting hole; The lead wire harness is provided with a mounting block, and at least a portion of the mounting block is engaged in the mounting hole.

3. The photovoltaic panel according to claim 2, characterized in that, The mounting hole has a first limiting groove on its wall, and the first limiting groove communicates with the mounting cavity; The mounting block is provided with a limiting boss, which is engaged in the first limiting groove.

4. The photovoltaic panel according to claim 3, characterized in that, The limiting boss is located at the end of the mounting block away from the connector interface.

5. The photovoltaic panel according to claim 3, characterized in that, The mounting block is also provided with a second limiting groove, and the wall of the mounting hole is engaged in the second limiting groove.

6. The photovoltaic panel according to any one of claims 1 to 5, characterized in that, Also includes: The dust plug is detachably connected to the connector interface. When the dust plug is connected to the connector interface, the dust plug is used to seal the connector interface.

7. The photovoltaic panel according to claim 6, characterized in that, Also includes: A collar is fitted onto the lead-out wire harness; A connecting strap, one end of which is connected to the collar, and the other end of which is connected to the dust plug.

8. The photovoltaic panel according to any of claims 1 to 5, characterized in that, Also includes: A sunlight indicator lens is disposed in the first housing. The sunlight indicator lens has a scale to assist in adjusting the placement angle of the photovoltaic panel.

9. The photovoltaic panel according to claim 8, characterized in that, The first housing is provided with a mounting groove, and the sunlight indicator lens is disposed in the mounting groove; The main lens is located at the opening of the mounting slot.

10. A portable photovoltaic device, characterized by include: Photovoltaic panels as described in any one of claims 1 to 9; A folding frame is connected to the photovoltaic panel.

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