Intelligent mower with large-area solar panel sun-shading and charging functions

Abstract

The invention discloses an intelligent mower with a large-area solar panel sunshade charging function. The intelligent mower comprises an intelligent mower body, an X-Y two-dimensional direction adjustable solar panel and a control system of the X-Y two-dimensional direction adjustable solar panel. The solar cell panel adjustable in the X-Y two-dimensional direction comprises an angle-adjustable frame, an angle-adjustable photovoltaic cell panel, a frame angle adjusting mechanism, a photovoltaic panel angle adjusting mechanism, a control system and the like. According to the technical effects and advantages of the invention, solar charging can be realized while working; according to the scheme, the output power can reach about 500W, and energy can be effectively supplemented in real time; the charging frequency is reduced, safety and environmental protection are achieved, working efficiency is improved, and working time is prolonged. Sunshading and cooling can be realized. When mowing in sunny days, direct sunlight is avoided, so that the temperature of equipment can be reduced by 5-8 DEG C, the equipment can be obviously prevented from being overheated, the equipment below can be effectively protected from being directly burnt by high temperature, the working environment is effectively improved, the reliability of the equipment is improved, and the service life of the equipment is prolonged.

Description

Technical Field

[0001] This invention relates to the field of intelligent lawnmower technology, and more specifically to an intelligent lawnmower with a large-area solar panel for sunshade and charging. Background Technology

[0002] Because intelligent lawnmowers possess the ability to autonomously trim lawns and independently maintain and manage them, they have become widely used and popular in our daily lives. However, during actual operation, the range extender engine itself generates significant heat, as do the various motors and their controllers. Prolonged exposure to sunlight causes the lawnmower's components to overheat rapidly, drastically deteriorating its working conditions and severely testing its durability and reliability. Currently, wide-area (over 1.5m) satellite-navigated automatic lawnmowers often face extremely large operating scenarios, requiring continuous operation for more than 8 hours under extreme conditions such as direct sunlight and ambient temperatures exceeding 40 degrees Celsius, placing even higher demands on their reliability. Summary of the Invention

[0003] To meet the above requirements, the present invention provides an intelligent lawnmower with a large-area solar panel for sunshading and charging.

[0004] The technical solution of this invention is as follows:

[0005] A smart lawnmower with a large-area solar panel for shading and charging includes a smart lawnmower, an XY two-dimensional adjustable solar panel and its control system; the XY two-dimensional adjustable solar panel includes an adjustable angle frame, an adjustable angle photovoltaic panel, a frame angle adjustment mechanism, a photovoltaic panel angle adjustment mechanism and a control system, etc.

[0006] The intelligent lawnmower is equipped with an adjustable angle frame on top, and adjustable angle photovoltaic panels are installed on the adjustable angle frame. They can independently adjust their X and Y angles and are controlled by a controller, thereby realizing the X and Y two-dimensional adjustment of the solar panels, so that they can receive sunlight vertically as much as possible during movement to obtain the maximum solar energy output.

[0007] The adjustable angle frame is perpendicular to the rotating axis plane corresponding to the adjustable angle photovoltaic panel, thereby achieving two-dimensional directional adjustment.

[0008] The frame angle adjustment mechanism is fixed at the top center of the smart lawnmower; the photovoltaic panel angle adjustment mechanism is fixed at the top center of the frame angle adjustment mechanism, and the rotation axes of the two are located at opposite ends of the center line and are perpendicular to each other in their planes.

[0009] Furthermore, both the frame angle adjustment mechanism and the photovoltaic panel angle adjustment mechanism are equipped with a set of electric screw angle adjustment mechanisms, each set on a side adjacent to its respective rotating shaft and on different side frames; the screw is threadedly connected to the angle adjustment nut, and the screw is driven by a DC motor and can rotate in both directions; the adjustment nut is provided with nut support rotating shafts on both sides, so that the nut can rotate slightly as the two mechanisms move up and down.

[0010] Furthermore, the adjustable angle frame is provided with frame support pivots on both sides, and two support frames are installed on both sides of the top of the intelligent lawnmower. The frame support pivots are installed on the support frames through bearing bushes.

[0011] Furthermore, photovoltaic panel support shafts are provided on both sides of the adjustable angle photovoltaic panel, and two photovoltaic panel support frames are installed on the side frames of the adjustable angle frame. The photovoltaic panel support shafts are installed on the photovoltaic panel support frames through bearing bushes.

[0012] Furthermore, it also includes two motors for driving the frame angle adjustment mechanism and the photovoltaic panel angle adjustment mechanism, respectively. The motors are connected to the output terminal of the control system. The control system is connected to the output terminal of the solar panel and is used to continuously sample the output current and voltage.

[0013] Furthermore, the target is defined as maximizing the product of the current and voltage at the output terminal of the photovoltaic cell sampled at the same time (i.e., the output power). The rotation direction of the adjustable angle frame is X-axis, and the rotation direction of the adjustable angle photovoltaic panel is Y-axis.

[0014] Adjustable angle frame control: By continuously sampling, it is determined whether the output power is at its maximum. When the output power is at its maximum, the motor stops. When the output power is not at its maximum, the motor rotates forward or in reverse until the output power is at its maximum and the motor stops.

[0015] Adjustable angle photovoltaic panel control: By continuously sampling, it is determined whether the output power is at its maximum. When the output power is at its maximum, the motor stops. When the output power is not at its maximum, the motor rotates forward or in reverse until the output power is at its maximum and the motor stops.

[0016] In this way, by continuously adjusting the X and Y dimensions, the effective output power of the photovoltaic cell can be maximized.

[0017] Furthermore, in order to eliminate the instantaneous impact of factors such as angle changes caused by bumps during driving and cloud changes on the output power of photovoltaic cells, it is proposed to perform fuzzification processing such as delay on the system sampling, so as to reduce the frequent over-adjustment of the motor in the XY direction, avoid ineffective wear of the mechanism, and obtain the average optimal power output value.

[0018] The technical effects and advantages of this invention are as follows:

[0019] 1. Solar charging can be achieved while working: The output power of this solution can reach about 500W, which can effectively replenish energy in real time; reduce the number of charging times, be safe and environmentally friendly, improve work efficiency, and extend working time.

[0020] 2. It can provide shade and reduce temperature. When mowing lawns on sunny days, by avoiding direct sunlight, the temperature of the equipment can be reduced by 5-8 degrees Celsius, which can significantly prevent the equipment from overheating, effectively protect the equipment below from direct high temperature, effectively improve the working environment, improve equipment reliability, and extend equipment life.

[0021] 3. To obtain the maximum output power of the photovoltaic cells in a timely manner, this patent abandons the conventional and complex technical approach of using multiple optical sensors. Instead, it aims to directly obtain the maximum output power of the photovoltaic cells. Based on sampling the output current and voltage at the photovoltaic cell's output terminal, it adjusts the XY direction of the photovoltaic panel in a timely manner to achieve optimal output. Simultaneously, by employing fuzzification measures such as delayed sampling periods, it effectively eliminates frequent changes in output power caused by factors such as terrain bumps during mowing and cloud cover changes. This avoids the adverse effects of frequent and excessive adjustments in the XY direction, ensuring a stable and effective acquisition of the average maximum output power. This significantly simplifies the design, saves costs, reduces potential equipment malfunctions, and extends equipment lifespan, achieving optimal cost-effectiveness. Attached Figure Description

[0022] Figure 1 This is a front view of the present invention;

[0023] Figure 2 This is a side view of the present invention;

[0024] Figure 3 Top view of the adjustable angle frame;

[0025] Figure 4 This is a top view of an adjustable-angle photovoltaic panel.

[0026] Figure 5 This is a block diagram of the angle adjustment logic. Detailed Implementation

[0027] The technical solutions in the embodiments of the present invention will be clearly and completely described below. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0028] like Figures 1-4The intelligent lawnmower shown includes an intelligent lawnmower 1, an adjustable angle frame 2, an adjustable angle photovoltaic panel 3, a frame angle adjustment mechanism 4, a photovoltaic panel angle adjustment mechanism 5, and a control system.

[0029] The intelligent lawnmower 1 is equipped with an adjustable angle frame 2 on top, and an adjustable angle photovoltaic panel 3 is installed on the adjustable angle frame. They can adjust their angles independently and are controlled by the controller, thereby realizing the adjustment of the solar panels in the X and Y directions, so that they can receive sunlight vertically as much as possible during movement to obtain the maximum solar energy output.

[0030] The adjustable angle frame is perpendicular to the rotating axis plane corresponding to the adjustable angle photovoltaic panel. The X and Y two-dimensional adjustment is achieved by controlling the screw and motor.

[0031] Furthermore, the frame angle adjustment mechanism is fixed at the top center of the intelligent lawnmower; the photovoltaic panel angle adjustment mechanism is fixed at the center of the upper edge of the frame angle adjustment mechanism, and the rotation axes of the two are located at opposite ends of the center line and are perpendicular to each other in their planes.

[0032] Furthermore, both the frame angle adjustment mechanism and the photovoltaic panel angle adjustment mechanism employ an electric screw angle adjustment mechanism, each set on a separate side adjacent to its respective rotating shaft. The screw is threadedly connected to the angle adjustment nut and is driven by a DC motor, allowing for forward and reverse rotation. Nut support shafts are provided on both sides of the adjustment nut, enabling the nut to rotate slightly as the two mechanisms move up and down. The bottom of the adjustment motor and the frame are equipped with a rotating shaft mechanism to synchronously adapt to angle changes caused by the screw's angle during movement.

[0033] in:

[0034] The fixed end 41 of the frame angle adjustment mechanism 4 is movably connected to the top of the intelligent lawnmower, and the movable end 42 of the frame angle adjustment mechanism is movably connected to the frame lifting mechanism.

[0035] The fixed end 51 of the photovoltaic panel angle adjustment mechanism 5 is movably connected to the top of the adjustable angle frame via a universal joint 53, and the movable end 52 of the photovoltaic panel angle adjustment mechanism is movably connected to the adjustable angle photovoltaic panel mechanism.

[0036] Furthermore, both the frame angle adjustment mechanism and the photovoltaic panel angle adjustment mechanism adopt electric screw angle adjustment mechanisms. The screw (i.e., movable end 42 and movable end 52) of the screw angle adjustment mechanism is threadedly connected to the angle adjustment nut 6, and nut support shafts 61 are set on both sides of the angle adjustment nut.

[0037] like Figure 3As shown, an angle adjusting nut seat 21 is installed on the adjustable angle frame 2, and the angle adjusting nut seat 21 is rotatably connected to the corresponding nut support shaft 61.

[0038] like Figure 4 As shown, an adjustable-angle photovoltaic panel 3 is equipped with a bearing 31, which is rotatably connected to a corresponding nut-supported shaft 61.

[0039] Furthermore, the adjustable angle frame 2 is provided with frame support pivots 22 on both sides, and the smart lawnmower is equipped with two support frames 7 on both sides of the top, with the frame support pivots 22 rotatably mounted on the top of the support frames 7.

[0040] Furthermore, the adjustable angle photovoltaic panel 3 is provided with photovoltaic panel support shafts 32 on both sides, and two photovoltaic panel support frames 8 are installed on both sides of the adjustable angle frame. The photovoltaic panel support shafts 32 are rotatably installed on the top sides of the photovoltaic panel support frames 8.

[0041] It also includes two motors for driving the frame angle adjustment mechanism and the photovoltaic panel angle adjustment mechanism, respectively. The motors are connected to the output of the control system. The control system is connected to the output of the solar panel and is used to continuously sample the output current and voltage.

[0042] like Figure 5 As shown, the target is defined as maximizing the product of the current and voltage at the output terminal of the photovoltaic cell sampled at the same time (i.e., the output power). The rotation direction of the adjustable angle frame is X-axis, and the rotation direction of the adjustable angle photovoltaic panel is Y-axis.

[0043] Adjustable angle frame control: By continuously sampling, it is determined whether the output power is at its maximum. When the output power is at its maximum, the motor stops. When the output power is not at its maximum, the motor rotates forward or in reverse until the output power is at its maximum and the motor stops.

[0044] Adjustable angle photovoltaic panel control: By continuously sampling, it is determined whether the output power is at its maximum. When the output power is at its maximum, the motor stops. When the output power is not at its maximum, the motor rotates forward or in reverse until the output power is at its maximum and the motor stops.

[0045] In this way, by continuously adjusting the X and Y dimensions, the effective output power of the photovoltaic cell can be maximized.

[0046] Furthermore, in order to eliminate the instantaneous impact of factors such as angle changes caused by bumps during driving and cloud changes on the output power of photovoltaic cells, it is proposed to perform fuzzification processing such as delay on the system sampling, so as to reduce the frequent over-adjustment of the motor in the XY direction, avoid ineffective wear of the mechanism, and obtain the average optimal power output value.

[0047] This invention adds a solar panel to an intelligent lawnmower, using commercially available solar cells with a conversion efficiency of over 20%. The solar panel employs a two-axis (XY) structure, allowing for real-time tracking and adjustment in both dimensions to ensure the solar panel always faces the sun at the optimal angle, maintaining maximum output power. To this end, the control system continuously samples the output current and voltage of the solar panel, aiming to maximize their product (i.e., output power) and synchronously adjusts the XY axis system in a closed loop. To overcome the impact of transient cloud changes on output power, and the variations in output power caused by uneven terrain affecting the angle of the solar panel facing the sun, which would lead to frequent operation of the two-axis adjustment system and unreasonable mechanical wear, the system sampling is fuzzified by delaying the sampling period. While this doesn't guarantee optimal output power at every moment, it achieves the most reasonable and effective state considering the balance between system control, mechanical wear, and the cost and efficiency of output power.

[0048] This invention enables solar charging while the device is in operation: the output power can reach approximately 500W, which can effectively replenish energy in real time; it reduces the number of charging cycles, is safe and environmentally friendly, improves work efficiency, and extends working time.

[0049] It can provide shade and lower the temperature. When mowing lawns on sunny days, by avoiding direct sunlight, it is estimated that the equipment temperature can be reduced by 5-8 degrees Celsius, which can significantly prevent the equipment from overheating, effectively protect the equipment below from direct high temperature, effectively improve the working environment, improve equipment reliability, and extend equipment life.

[0050] Furthermore, to obtain the maximum output power of the photovoltaic cells in a timely manner, this patent abandons the conventional, complex technical approach that uses numerous optical sensors. Instead, it aims to directly obtain the maximum output power of the photovoltaic cells by sampling the output current and voltage at the photovoltaic cell's output terminal and adjusting the XY direction of the photovoltaic panel in a timely manner to achieve optimal output. Simultaneously, by employing fuzzification measures such as delayed sampling periods, it effectively eliminates frequent changes in output power caused by terrain bumps and cloud cover during mowing, avoiding the adverse effects of frequent over-adjustment of the XY direction on the equipment. This ensures stable and effective acquisition of the average maximum output power, greatly simplifying the design, saving costs, reducing potential equipment malfunctions, and extending equipment lifespan. It achieves optimal cost-effectiveness.

[0051] The above description is merely a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A smart lawnmower with a large-area solar panel for sunshade and charging, characterized in that: The application relates to a smart mower, an X-Y two-dimensional direction adjustable solar cell panel and a control system thereof. The adjustable angle frame is arranged on the top of the smart mower, and the adjustable angle photovoltaic cell panel is arranged on the adjustable angle frame. The adjustable angle frame and the adjustable angle photovoltaic cell panel are perpendicular to each other. The frame angle adjusting mechanism is fixed on the top of the smart mower, and the photovoltaic cell panel angle adjusting mechanism is fixed on the upper end frame of the frame angle adjusting mechanism.

2. The intelligent mower with large-area solar panel sun-shading charging function according to claim 1, characterized in that: The frame angle adjusting mechanism and the photovoltaic cell panel angle adjusting mechanism are both electric screw angle adjusting mechanisms.

3. The intelligent mower with large-area solar panel sun-shading charging function according to claim 1, characterized in that: The adjustable angle frame is provided with frame supporting shafts on two sides.

4. The intelligent mower with large-area solar panel sun-shading charging function according to claim 1, characterized in that: The adjustable angle photovoltaic cell panel is provided with photovoltaic panel supporting shafts on two sides.

5. The intelligent mower with large-area solar panel sun-shading charging function according to claim 1, characterized in that: The application further comprises two motors for driving the frame angle adjusting mechanism and the photovoltaic cell panel angle adjusting mechanism respectively.

6. The intelligent mower with large-area solar panel sun-shading charging function according to claim 1, characterized in that: The control system is connected to the output end of the solar cell panel and is used for continuously sampling the output current and voltage. The adjustable angle frame control is realized by continuously sampling to determine whether the output power is maximum. The adjustable angle photovoltaic cell panel control is realized by continuously sampling to determine whether the output power is maximum.

7. The intelligent mower with large-area solar panel sun-shading charging function according to claim 1, characterized in that: In order to eliminate the angle change caused by bumps during driving and the instantaneous influence of cloud changes on the output power of the photovoltaic cell, the system sampling is delayed and blurred to reduce the frequent over-adjustment of the motor to the X-Y direction, avoid invalid wear of the mechanism and obtain the average optimal power output value.

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