An adjustable angle solar charging device for electric vehicles

Abstract

The utility model discloses a kind of adjustable angle solar charging devices for electric vehicle, including photovoltaic panel assembly, tray, angle adjusting mechanism and support frame mechanism.Photovoltaic panel assembly is made of multiple independently overturnable photovoltaic panels, and is movably arranged on the tray.The angle adjusting mechanism is installed between the tray and the backrest frame of the electric vehicle, and the pitch angle adjustment of the tray in the vertical plane is realized and locked by the pivotable connection and bolt locking of the first U-shaped piece and the second U-shaped piece.The support frame mechanism is movably arranged on the left and right sides and the upper and lower sides of the tray, and in the unfolded state, it unfolds outward to support the photovoltaic panels, so that the multiple photovoltaic panels are distributed in a cross shape with increasing light-receiving area.In the folded state, it folds inward and covers on the photovoltaic panel assembly.The utility model solves the problem of low light energy capture efficiency caused by the inability to adjust the angle of the fixedly installed photovoltaic panels, and the problem of high wind resistance caused by increasing the area, and realizes the unity of efficient charging and convenient storage.

Description

Technical Field

[0001] This utility model relates to the field of solar energy application technology, and in particular to an adjustable angle solar charging device for electric vehicles. Background Technology

[0002] With the continuous development of new energy technologies, solar energy, as a clean and renewable energy source, is receiving increasing attention in the field of electric vehicle charging. Electric vehicles, especially two-wheeled electric vehicles, have become an important tool for short-distance urban travel due to their flexibility and convenience. However, their limited range and the inadequacy of public charging facilities often leave users in the predicament of having to push their vehicles after running out of power. Utilizing solar energy to supplement the charging of electric vehicles is considered an effective solution.

[0003] Currently, most existing vehicle-mounted solar charging solutions are fixed installations, where photovoltaic panels are directly attached to the vehicle's surface (such as the pedals or trunk lid). This fixed structure has significant limitations: First, the angle of the photovoltaic panels is not adjustable, making it impossible to optimize the angle of incidence as the sun's position changes, resulting in low light capture efficiency and unstable power generation. Second, simply increasing the area of ​​the photovoltaic panels to obtain greater power can significantly increase wind resistance while the vehicle is in motion, affecting handling and safety, and also requiring a large amount of space when parked.

[0004] Therefore, an adjustable-angle solar charging device for electric vehicles is proposed to address the current shortcomings. Utility Model Content

[0005] In view of this, the present invention provides an adjustable angle solar charging device for electric vehicles to solve or improve the technical problems existing in the prior art.

[0006] The technical solution of this utility model embodiment is implemented as follows: An adjustable angle solar charging device for electric vehicles, comprising: A photovoltaic panel module, consisting of multiple independently rotatable photovoltaic panels; A tray for supporting the photovoltaic panel assembly, wherein each photovoltaic panel is movably disposed on the tray in a manner that allows it to be expanded and retracted relative to the tray; An angle adjustment mechanism is installed between the tray and the electric vehicle rear seat frame; the angle adjustment mechanism is configured to drive and lock the pitch angle of the tray relative to the electric vehicle rear seat frame in the vertical plane. The support frame mechanism is movably mounted on the tray and has an unfolded state that supports the tray and the photovoltaic panel, and a retracted state that detaches from supporting the photovoltaic panel. The support frame mechanism in the unfolded state is used to support the photovoltaic panel assembly when it is unfolded, and the angle adjustment mechanism is used to adjust the overall pitch angle of the photovoltaic panel assembly in the unfolded state.

[0007] As an improvement, the angle adjustment mechanism includes: The first U-shaped component is fixedly connected to the rear seat frame of the electric vehicle at its base. The second U-shaped component has its base fixedly connected to the middle of the back of the tray; The two free ends of the first U-shaped member and the two free ends of the second U-shaped member are pivotally connected to each other by bolts.

[0008] As an improvement, the first U-shaped member and / or the second U-shaped member are made of sheet metal.

[0009] As an improvement, the support frame mechanism includes: Two horizontal supports are provided, symmetrically arranged on the left and right sides of the tray and rotatably connected to the corresponding side of the tray respectively; Two longitudinal supports are provided, symmetrically arranged on the upper and lower sides of the tray and rotatably connected to the corresponding side of the tray respectively; In the unfolded state, the support frame mechanism unfolds outward and supports the photovoltaic panel, so that multiple photovoltaic panels are arranged in a cross shape to increase the light-receiving area; in the retracted state, the support frame mechanism retracts inward and covers the retracted photovoltaic panel assembly.

[0010] As an improvement, the transverse and / or longitudinal supports are rod-shaped or slat-shaped structures.

[0011] As an improvement, multiple photovoltaic panels are electrically connected in series and / or in parallel via flexible wires or hinged conductive strips.

[0012] As an improvement, the output end of the photovoltaic panel is connected to a charging control circuit, which is used to convert photovoltaic power and transmit it to the battery of the electric vehicle.

[0013] Compared with the prior art, the beneficial effects of this utility model are: This invention achieves stepless adjustment and reliable locking of the pitch angle of photovoltaic panel modules in the vertical plane through an angle adjustment mechanism, enabling users to optimize the light incident angle in real time according to the solar altitude angle, significantly improving the light capture efficiency, and solving the technical problems of unstable power generation and low efficiency caused by the inability to track light in fixed installations.

[0014] This invention utilizes multiple independently rotatable photovoltaic panels and a movable support frame mechanism to achieve deployment in the working state and folding in the driving state. When deployed, the photovoltaic panels are arranged in a cross shape to maximize the light-receiving area and power generation; when folded, the photovoltaic panels and support frame mechanism are compactly folded, effectively reducing air resistance during vehicle operation, improving handling stability and safety, and reducing parking space occupation.

[0015] In its unfolded state, the support frame mechanism of this utility model provides stable static support for the photovoltaic panel from four directions through the horizontal and vertical supports, effectively resisting deformation by external forces. In its retracted state, it covers the photovoltaic panel assembly, forming a protective structure to prevent damage to components or accidental unfolding due to vibration or bumps during movement or transportation.

[0016] This invention connects multiple photovoltaic panels electrically via flexible wires or hinged conductive strips. This allows the panels to adapt to bending and movement during frequent unfolding and retraction, effectively avoiding fatigue fractures caused by rigid connections and ensuring the long-term reliability of the entire charging system's electrical connections.

[0017] The above overview is for illustrative purposes only and is not intended to be limiting in any way. In addition to the illustrative aspects, embodiments, and features described above, further aspects, embodiments, and features of the present invention will become readily apparent from the accompanying drawings and the following detailed description. Attached Figure Description

[0018] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0019] Figure 1 This is a schematic diagram of the structure of an adjustable angle solar charging device for electric vehicles according to this utility model. Figure 1 ; Figure 2 This is a schematic diagram of the structure of an adjustable angle solar charging device for electric vehicles according to this utility model. Figure 2 ; Figure 3 This is a schematic diagram of the unfolded structure of the support frame mechanism in an adjustable angle solar charging device for electric vehicles according to this utility model. Figure 4 This is a schematic diagram of the unfolded state of an adjustable-angle solar charging device for electric vehicles according to this utility model. Figure 1 ; Figure 5 This is a schematic diagram of the unfolded state of an adjustable-angle solar charging device for electric vehicles according to this utility model. Figure 2 ; Figure 6 This is a schematic diagram of the angle adjustment mechanism in an adjustable angle solar charging device for electric vehicles according to this utility model.

[0020] Figure label: 1. Photovoltaic panel module; 11. Photovoltaic panel; 2. Pallet; 3. Angle adjustment mechanism; 31. First U-shaped component; 32. Second U-shaped component; 4. Support frame mechanism 4; 41. Horizontal support; 42. Longitudinal support. Detailed Implementation

[0021] In the following description, only certain exemplary embodiments are briefly described. As those skilled in the art will recognize, the described embodiments can be modified in various ways without departing from the spirit or scope of this invention. Therefore, the drawings and description are considered exemplary in nature and not restrictive.

[0022] It is important to note that terms such as "first," "second," "symmetric," and "array" are used only to distinguish between descriptive and positional descriptions and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Therefore, features specified with terms such as "first" or "symmetric" may explicitly or implicitly include one or more of that feature; similarly, when the quantity of certain features is not limited by words such as "two" or "three," it should be noted that such features also explicitly or implicitly include one or more features. In this invention, unless otherwise explicitly specified and limited, terms such as "installation," "connection," and "fixation" should be interpreted broadly; for example, they can refer to a fixed connection, a detachable connection, or an integral molding; they can refer to a mechanical connection, a direct connection, a welding connection, or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the accompanying drawings and specific circumstances.

[0023] The embodiments of this utility model will now be described in detail with reference to the accompanying drawings.

[0024] This utility model embodiment provides an adjustable angle solar charging device for electric vehicles, which can be referred to as follows. Figures 1-2 and Figure 5The system includes a photovoltaic panel assembly 1, a tray 2, an angle adjustment mechanism 3, and a support frame mechanism 4. The photovoltaic panel assembly 1 has multiple independently rotatable photovoltaic panels 11. One edge of each photovoltaic panel 11 is movably connected to the tray 2, allowing it to rotate outwards or inwards to increase the total light-receiving area and improve power generation. Specifically, the edges of the photovoltaic panels 11 are connected to corresponding sides of the tray 2 via nylon flat straps. The tray 2 supports the photovoltaic panel assembly 1, and each photovoltaic panel 11 is movably mounted on the tray 2 in a manner that allows it to rotate and retract relative to the tray 2. The angle adjustment mechanism 3 is installed between the tray 2 and the rear seat frame of the electric vehicle. The angle adjustment mechanism 3 is configured to drive and lock the pitch angle of the tray 2 relative to the rear seat frame of the electric vehicle in the vertical plane, so that the photovoltaic panel assembly 1 can be adjusted to an angle close to perpendicular to the sunlight rays after being unfolded, thereby improving light capture efficiency. The support frame mechanism 4 is movably mounted on the tray 2 and has an unfolded state supported between the tray 2 and the photovoltaic panels 11, and a retracted state unsupported by the photovoltaic panels 11. Among them, the support frame mechanism 4 in the unfolded state is used to support the photovoltaic panel module 1 when it is unfolded, and the angle adjustment mechanism 3 is used to adjust the overall pitch angle of the photovoltaic panel module 1 in the unfolded state.

[0025] As one implementation method of this embodiment, please refer to Figure 2 and Figure 6 The angle adjustment mechanism 3 can realize and lock the pitch angle adjustment of the photovoltaic panel tray in the vertical plane, thereby optimizing the incident angle of sunlight on the photovoltaic panel. The angle adjustment mechanism 3 includes a first U-shaped member 31 and a second U-shaped member 32. The base of the first U-shaped component 31 is fixedly connected to the rear seat frame of the electric vehicle. The first U-shaped component 31 serves as a fixed connection point between the angle adjustment mechanism 3 and the electric vehicle body, and can transfer the static load (such as weight and wind resistance) of the angle adjustment mechanism 3 to the sturdy electric vehicle frame to ensure the stability of the angle adjustment mechanism 3 on the electric vehicle frame.

[0026] The base of the second U-shaped member 32 is fixedly connected to the middle of the back of the tray 2; the second U-shaped member 32 is fixedly connected to the tray 2 and bears the weight of the tray 2 and all its components. At the same time, its two free ends are movably connected to the ends of the first U-shaped member 31, thereby converting its own rotational motion into an angular change of the tray 2.

[0027] The two free ends of the first U-shaped member 31 and the two free ends of the second U-shaped member 32 are pivotally connected to each other by bolts.

[0028] The bolt serves as the connecting shaft between the first U-shaped member 31 and the second U-shaped member 32, enabling reliable rotational movement between them. Tightening the nut generates friction between the contact surfaces of the first U-shaped member 31 and the second U-shaped member 32. This friction is sufficient to resist external torque, locking the angle adjustment mechanism 3 at any desired adjustment angle.

[0029] Furthermore, the first U-shaped member 31 and / or the second U-shaped member 32 are made of sheet metal to prevent their arms from bending and deforming under stress and to prevent tearing at the connection holes at their base, thereby ensuring the stability and reliability of the angle adjustment mechanism 3.

[0030] In practice, when the angle needs to be adjusted, the user can loosen the bolt that serves as the pivot shaft appropriately. At this time, the preload provided by the bolt is reduced, and the friction between the contact surfaces of the first U-shaped member 31 and the second U-shaped member 32 is significantly reduced.

[0031] The user can then manually push tray 2 to rotate it upwards or downwards in a vertical plane around the bolt axis. The second U-shaped component 32 rotates accordingly, causing the photovoltaic panel assembly 1 to change its pitch angle. When the ideal angle is reached (i.e., the plane of the photovoltaic panel 11 is as perpendicular as possible to the direction of sunlight), the user tightens the bolt.

[0032] After the bolts are tightened, the axial tension generated by the threads presses the free ends of the first U-shaped member 31 and the second U-shaped member 32 tightly together. This pressure is converted into static friction at the contact surface. The torque resisting rotation generated by this friction is much greater than the overturning torque of the tray 2 and its load due to gravity and wind resistance. Therefore, the angle adjustment mechanism 3 is securely locked at the current angle, ensuring stability during charging.

[0033] As one implementation method of this embodiment, please refer to Figures 3-4 The support frame mechanism 4 includes two transverse supports 41 and two longitudinal supports 42. Two transverse supports 41 are symmetrically arranged on the left and right sides of the tray 2 and rotatably connected to the corresponding sides of the tray 2. The transverse supports 41 resist forces from the left and right directions (lateral), providing lateral support for the unfolded photovoltaic panel 11 and preventing it from swaying or twisting to either side. Two longitudinal supports 42 are symmetrically arranged on the upper and lower sides of the tray 2 and rotatably connected to the corresponding sides of the tray 2. The longitudinal supports 42 resist forces from the front and back directions (longitudinal), providing front and back support for the unfolded photovoltaic panel and preventing the photovoltaic panel 11 from folding forward or backward. Simultaneously, the longitudinal supports 42 and the transverse supports 41 work together to form a complete support plane and help determine the final tilt angle of the unfolded photovoltaic panel 11.

[0034] In its unfolded state, the support frame mechanism 4 extends outward to support the photovoltaic panels 11, arranging multiple photovoltaic panels 11 in a cross-shaped distribution to increase the light-receiving area. In its retracted state, the support frame mechanism 4 retracts inward to cover the retracted photovoltaic panel assembly 1. Furthermore, the transverse support 41 and / or the longitudinal support 42 are rod-shaped or strip-shaped structures, ensuring excellent bending stiffness of the support frame mechanism 4 while effectively resisting bending deformation with minimal weight and material cost. Their linear or strip-shaped form facilitates hinged connections with the tray 2 at both ends and provides clear line contact or small-area contact for the back of the photovoltaic panels 11, facilitating support. Both the transverse support 41 and the longitudinal support 42 are rotatably connected to the tray 2, allowing all supports to independently unfold outward or retract inward. Simultaneously, the independent connection of the transverse support 41 and the longitudinal support 42 makes the support frame mechanism 4 more tolerant and flexible in its unfolding and retracting processes.

[0035] In the unfolded state, the free end of the bracket (the end away from the hinge point of the tray 2) presses against the back of the photovoltaic panel 11 through contact support, directly transferring the supporting force of the bracket to the photovoltaic panel 11, so that it remains stable in the unfolded position; at the same time, the transverse bracket 41 and the longitudinal bracket 42 provide support from four directions, forming a statically determinate and stable structure, distributing the pressure and bending moment on the single photovoltaic panel 11 to the four sides of the tray 2, greatly improving its overall rigidity.

[0036] In practice, when charging is required, the user first rotates all the horizontal supports 41 and vertical supports 42 outward from their retracted state to their predetermined unfolded positions, thus preparing a clear and reliable support contact surface for the photovoltaic panels 11 in the air. Then, the user sequentially flips each photovoltaic panel 11 outward, and when the photovoltaic panel 11 is flipped to a near-horizontal position, its back side contacts the free end of the already positioned support. At this point, the weight of the photovoltaic panel 11 and the loads such as wind force are transferred and distributed throughout the support frame mechanism 4.

[0037] When retracting, the user first flips all the photovoltaic panels 11 inward from their unfolded state, stacking them on the tray 2. After confirming that all photovoltaic panels 11 are safely retracted, the user rotates the longitudinal support 42 and the transverse support 41 inward in sequence, covering the stacked photovoltaic panel assembly 1. At this time, the support frame mechanism 4 can prevent the photovoltaic panels 11 from accidentally popping open during vehicle bumps. In implementation, multiple photovoltaic panels 11 are electrically connected in series and / or in parallel via flexible wires or hinged conductive strips. The output end of the photovoltaic panel assembly 1 is connected to a charging control circuit, which is existing technology and is used to convert photovoltaic power into electricity and transmit it to the battery of the electric vehicle.

[0038] During implementation, sunlight shines on the unfolded photovoltaic panels 11, and each photovoltaic panel 11 independently generates direct current. The generated current flows between the photovoltaic panels 11 through flexible wires or hinged conductive strips, and is combined into a total photovoltaic power output according to a preset series / parallel connection method.

[0039] The collected electrical energy first enters the charging control circuit. The MPPT subsystem in the circuit then activates, using an internal high-speed digital processor (or dedicated analog circuitry) to calculate and locate the maximum power point in real time, ensuring the power conversion unit operates at its optimal state. Simultaneously, the power conversion unit (typically a DC-DC converter) transforms the unstable photovoltaic voltage into a stable charging voltage and current. The optimized and regulated electrical energy is then safely injected into the electric vehicle's battery through the output cable.

[0040] In specific implementation of this utility model: Phase 1: Deployment and Angle Adjustment of the Device 1.1 Establishing a supporting framework: The user first operates the support frame mechanism 4. The two horizontal supports 41 and two vertical supports 42 are rotated outwards from their retracted state, allowing their free ends to fully extend. At this point, the four supports form a stable "+" shaped spatial support boundary around the tray 2, providing pre-set, reliable support contact points for the subsequent unfolding of the photovoltaic panel 11.

[0041] 1.2 Development of the photovoltaic light-receiving surface: After the support frame is established, the user sequentially flips multiple photovoltaic panels 11 outwards around their connecting edges with the tray 2. When the photovoltaic panel 11 is flipped to a near-horizontal working position, its back side will contact and be supported by the free end of the already positioned horizontal support 41 or vertical support 42. At this point, all the unfolded photovoltaic panels 11 change from an unstable motion state to a stable state supported by a static structure, and together form an approximately plane (cross-shaped distribution) with a significantly increased light-receiving area.

[0042] 1.3 Angle Adjustment: The user operates the angle adjustment mechanism 3. The bolts connecting the free ends of the first U-shaped member 31 and the second U-shaped member 32 are loosened appropriately to reduce the friction between their contact surfaces. The user pushes the tray 2 by hand, causing it to rotate in the vertical plane around the bolt axis via the second U-shaped member 32, thereby changing the pitch angle of the entire deployed photovoltaic panel assembly 1.

[0043] After adjusting the angle so that the plane of the photovoltaic panel 11 is as perpendicular as possible to the local sunlight rays, the user tightens the bolts. The axial pressure generated by the bolts causes the contact surfaces of the first U-shaped member 31 and the second U-shaped member 32 to generate a static friction force sufficient to resist external torque, thereby firmly locking the angle adjustment mechanism 3 and the tray 2 at the current angle.

[0044] Phase Two: Photoelectric Conversion and Charging Sunlight shines on the unfolded photovoltaic panels 11, and each panel 11 converts solar energy into direct current (DC) electricity. The generated current is transmitted through flexible wires or hinged conductive strips connecting adjacent photovoltaic panels 11. Following a preset series and / or parallel connection method, the output power of multiple photovoltaic panels 11 is collected into a total photovoltaic power generation. The collected power is then transmitted to the charging control circuit via a main output cable. The charging control circuit first optimizes the operating point of the photovoltaic panel 11 in real time through its maximum power point tracking (MPPT) subsystem, ensuring that the maximum possible power can be extracted under any environment. Subsequently, its internal DC-DC power conversion unit converts and stabilizes the unstable photovoltaic voltage into voltage and current that meet the charging requirements of the electric vehicle battery. Finally, the optimized and regulated electrical energy is safely injected into the electric vehicle's battery through the output cable, completing the entire charging process.

[0045] Phase Three: Organizing and Storage of the Device 3.1 Remove the light-receiving surface from the load: The user first flips all the photovoltaic panels 11 inwards in sequence to detach them from the support frame mechanism 4, and then stacks them together on the tray 2.

[0046] 3.2 Tighten the support frame: After the photovoltaic panel 11 is fully retracted, the user rotates the longitudinal support 42 and the transverse support 41 inward in sequence, so that they cover the retracted photovoltaic panel assembly 1. At this time, the support covers the photovoltaic panel 11 to prevent the photovoltaic panel from accidentally popping open while driving.

[0047] Finally, the user can adjust the angle adjustment mechanism 3 again to adjust the entire retracted device to a forward-tilted posture to minimize air resistance during driving.

[0048] The above description is merely a specific embodiment of this utility model, but the protection scope of this utility model is not limited thereto. Any person skilled in the art can easily conceive of various variations or substitutions within the technical scope disclosed in this utility model, and these should all be included within the protection scope of this utility model. Therefore, the protection scope of this utility model should be determined by the protection scope of the claims.

Claims

1. An adjustable-angle solar charging device for electric vehicles, characterized in that, include: A photovoltaic panel module (1) has multiple independently rotatable photovoltaic panels (11). A tray (2) is used to support the photovoltaic panel assembly (1), and each of the photovoltaic panels (11) is movably disposed on the tray (2) in a manner that allows it to be unfolded and retracted relative to the tray (2); An angle adjustment mechanism (3) is installed between the tray (2) and the electric vehicle rear seat frame; the angle adjustment mechanism (3) is configured to drive and lock the pitch angle of the tray (2) relative to the electric vehicle rear seat frame in the vertical plane. The support frame mechanism (4) is movably mounted on the tray (2) and has an unfolded state supported between the tray (2) and the photovoltaic panel (11), and a retracted state that is detached from the support of the photovoltaic panel (11). The support frame mechanism (4) in the unfolded state is used to support the photovoltaic panel assembly (1) when it is unfolded, and the angle adjustment mechanism (3) is used to adjust the overall pitch angle of the photovoltaic panel assembly (1) in the unfolded state.

2. The adjustable angle solar charging device for electric vehicles according to claim 1, characterized in that: The angle adjustment mechanism (3) includes: The first U-shaped piece (31) has its base fixedly connected to the rear seat frame of the electric vehicle. The second U-shaped piece (32) has its base fixedly connected to the middle of the back of the tray (2); The two free ends of the first U-shaped member (31) and the two free ends of the second U-shaped member (32) are pivotally connected to each other by bolts.

3. The adjustable angle solar charging device for electric vehicles according to claim 2, characterized in that, The first U-shaped member (31) and / or the second U-shaped member (32) are made of sheet metal.

4. The adjustable angle solar charging device for electric vehicles according to claim 1, characterized in that, The support frame mechanism (4) includes: Two horizontal supports (41) are provided, symmetrically arranged on the left and right sides of the tray (2) and rotatably connected to the corresponding side of the tray (2); Two longitudinal supports (42) are provided, symmetrically arranged on the upper and lower sides of the tray (2) and rotatably connected to the corresponding side of the tray (2); In the unfolded state, the support frame mechanism (4) unfolds outward and supports the photovoltaic panel (11), so that multiple photovoltaic panels (11) are arranged in a cross shape to increase the light-receiving area; in the retracted state, the support frame mechanism (4) retracts inward and covers the retracted photovoltaic panel assembly (1).

5. An adjustable-angle solar charging device for electric vehicles according to claim 4, characterized in that, The transverse support (41) and / or the longitudinal support (42) are rod-shaped or slat-shaped structures.

6. An adjustable-angle solar charging device for electric vehicles according to claim 1, characterized in that, Multiple photovoltaic panels (11) are electrically connected in series and / or in parallel via flexible wires or hinged conductive strips.

7. An adjustable-angle solar charging device for electric vehicles according to claim 1, characterized in that, The output end of the photovoltaic panel assembly (1) is connected to a charging control circuit, which is used to convert photovoltaic power into electricity and transmit it to the battery of the electric vehicle.

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