A portable power supply device based on a solar charger

Abstract

The application provides a portable power supply device based on a solar charger; the power supply device comprises a photovoltaic assembly, an energy storage assembly and a moving assembly; the photovoltaic assembly is composed of a plurality of photovoltaic panels, a frame, a linear actuator and a pitch angle adjusting mechanism; the frame is driven by the linear actuator to realize the expansion and contraction of the photovoltaic assembly. The pitch angle adjusting mechanism comprises a telescopic arm for adjusting the receiving angle of the photovoltaic panel to improve the solar energy capture efficiency. The energy storage assembly comprises a battery and an electric energy conversion circuit for storing the energy collected by the photovoltaic panel. The moving assembly is composed of a driving controller, a tracking controller and a moving chassis, which is responsible for carrying and pushing the entire device to move or rotate. Through the cooperative work of sensors and controllers, the moving chassis can adjust the assist power output according to the ground slope, weight and battery power to optimize the user experience when moving the power supply device.

Description

TECHNICAL FIELD

[0001] The present application belongs to the technical field of power devices, and specifically relates to a portable power supply device based on a solar charger. BACKGROUND

[0002] With the increasing demand for portable power supply for mobile devices and outdoor activities, traditional power supply methods face many challenges, especially in remote areas or outdoor environments, where it is difficult to obtain stable grid power supply. Existing portable power supply devices usually rely on battery energy storage, which has limited endurance and cannot achieve long-term continuous power supply. To solve this problem, solar charging technology has gradually become an ideal solution, but existing solar portable devices often lack flexibility in deploying photovoltaic panels and tracking solar angles, and cannot fully utilize solar energy resources. In addition, the existing mobile chassis design fails to effectively combine the user's push-pull action and terrain conditions for power assistance optimization, resulting in inconvenient operation.

[0003] After consulting relevant public technologies, the technical solution with publication number CN114683899A proposes a light storage and charging integrated modular mobile energy storage and charging device, which integrates a car with a photovoltaic power generation system and an energy storage system to realize a high-mobility light storage and charging solution; the technical solution with publication number KR101381592B1 proposes a mobile energy storage system integrated in a container, which sets multiple battery modules in the container to realize a large-capacity, high-mobility energy storage solution; and the technical solution of US20140375272A1 proposes a mobile energy storage device that can be adapted to an electric vehicle and can be detached from the electric vehicle to be used as an energy storage and power supply device alone.

[0004] The above technical solutions all propose devices that can realize mobile energy storage and power supply, but for the demand for smaller and more flexible energy storage forms, and also for the function of mobile devices that can be used and charged at the same time, more technical solutions need to be proposed.

[0005] The foregoing discussion of the background art is intended only to aid in understanding the present application. None of the discussion of the background art is to be taken as an admission that any of the material referred to is part of the common general knowledge of the pertinent art in any jurisdiction. SUMMARY

[0006] The application aims to provide a portable power supply device based on a solar charger; the power supply device comprises a photovoltaic assembly, an energy storage assembly and a moving assembly; the photovoltaic assembly is composed of a plurality of photovoltaic panels, a frame, a linear actuator and a pitch angle adjusting mechanism; the frame is driven by the linear actuator to realize the expansion and contraction of the photovoltaic assembly; the pitch angle adjusting mechanism comprises a telescopic arm for adjusting the receiving angle of the photovoltaic panel to improve the solar energy capture efficiency; the energy storage assembly comprises a battery and an electric energy conversion circuit for storing the energy collected by the photovoltaic panel; the moving assembly is composed of a drive controller, a tracking controller and a moving chassis, which is responsible for carrying and pushing the entire device to move or rotate; through the cooperation of sensors and controllers, the moving chassis can adjust the assist power output according to the ground slope, weight and battery power to optimize the user experience when moving the power supply device.

[0007] The application adopts the following technical scheme: a portable power supply device based on a solar charger, the power supply device comprises a photovoltaic assembly, an energy storage assembly and a moving assembly;

[0008] The photovoltaic assembly comprises a plurality of photovoltaic panels, a plurality of frames, a plurality of linear actuators, a pitch angle adjusting mechanism and related circuits for photovoltaic panel electric energy transmission and linear actuator electric energy transmission;

[0009] The energy storage assembly is installed inside the moving assembly and comprises an electric converter, a battery and an input / output circuit;

[0010] The moving assembly comprises a moving chassis, a drive controller and a tracking controller; the moving assembly is used for carrying the photovoltaic assembly and the energy storage assembly and providing power for driving the power supply device to move or rotate as a whole;

[0011] The plurality of support frames are used for fixedly mounting the corresponding photovoltaic panels; the support frames are driven by the plurality of linear actuators to change to realize the overall expansion and contraction deformation of the photovoltaic assembly; the photovoltaic receiving surface is formed by one or more photovoltaic panels exposed to the outside;

[0012] The pitch angle adjusting mechanism comprises a telescopic arm and a driving mechanism; the moving end of the telescopic arm is installed at the bottom of the photovoltaic assembly, the fixed end of the telescopic arm is fixed to the moving chassis, the normal angle of the photovoltaic receiving surface is changed by changing the joint relative angle of the telescopic arm; and after the photovoltaic assembly is deformed, the photovoltaic assembly is lowered by the telescopic arm so that the photovoltaic assembly is entirely covered on the surface of the moving chassis;

[0013] Preferably, the plurality of frames in the photovoltaic assembly comprises a main frame, which is arranged in the center, and a plurality of sub-frames arranged above, below, left and right of the main frame, each of the sub-frames is connected to the main frame through a sliding rail mechanism; a plurality of photovoltaic panels are respectively mounted on the main frame and the four sub-frames;

[0014] And, a triangular frame is further arranged on each of the left and right sub-frames; each of the triangular frames is connected to the left and right sub-frames through a folding mechanism; and a corresponding shaped photovoltaic panel is mounted on each of the triangular frames;

[0015] Through the above arrangement, the sub-frames above, below, left and right of the main frame are slid and accommodated in the main frame through the sliding rail mechanism, and completely cover the main frame in a stacked state;

[0016] Preferably, a sliding rail corresponding to the left and right sub-frames is arranged on the upper and lower edges of the main frame; and a sliding rail corresponding to the upper and lower sub-frames is arranged on the left and right edges of the main frame;

[0017] And, at least one linear actuator is configured for each sub-frame to drive the sub-frame to slide along the sliding rail configured therefor, so as to drive the sub-frame to expand and contract relative to the main frame;

[0018] Preferably, the tracking controller comprises a three-axis gyroscope sensor and a positioning sensor; the three-axis gyroscope sensor is arranged on the back of the main frame, and determines the pitch angle of the photovoltaic receiving surface according to the pitch angle of the main frame; and the positioning sensor is used to determine the global latitude and longitude of the power supply device;

[0019] The tracking controller calculates the solar elevation angle and the solar azimuth angle according to the obtained pitch angle data of the photovoltaic receiving surface and the current global latitude and longitude data, and automatically controls the telescopic arm to adjust the pitch angle of the photovoltaic receiving surface;

[0020] And, the tracking controller is coupled with the driving controller circuit; and the driving controller cooperates with the tracking controller to automatically control the mobile chassis to rotate so as to change the horizontal direction of the photovoltaic receiving surface;

[0021] Preferably, the mobile chassis comprises at least one driving motor and a power sensor; the driving motor outputs power to drive the mobile chassis to move and / or rotate; and the power sensor detects the pushing and pulling actions of the user on the power supply device, and the driving controller controls the output power of the driving motor according to the pushing and pulling direction of the user, so as to intervene in assisting the user to perform the pushing and pulling actions;

[0022] Preferably, a surface of the power supply device comprises a light indicator arranged to indicate to a user to adjust the directivity of the power supply device.

[0023] The present application has the following advantages:

[0024] The power supply device of the present application is combined with a plurality of photovoltaic panels and an adjustable pitch angle adjustment mechanism, which can automatically adjust the angle according to the position of the sun, always maintaining the optimal incident angle, thereby improving the capture efficiency of solar energy. The linear actuator drives the expansion and contraction of the photovoltaic assembly, so that the device not only has flexible adaptability, but also reduces the occupied space when not in use.

[0025] The moving assembly of the power supply device of the present application integrates sensors, drive motors and power assist control algorithms, which can intelligently adjust the power assist output of the chassis according to factors such as ground slope, total weight of the device, battery capacity, etc. In this way, the user no longer needs to exert excessive force when pushing or pulling the device, and can easily move it even on complex terrain, thereby enhancing the portability and operation experience of the device.

[0026] The energy storage assembly of the power supply device of the present application includes a battery, an electrical converter and an input / output circuit inside, which has effective electrical energy storage and management functions. Through the power management system, the energy storage assembly can monitor the battery capacity in real time and adjust the power output according to the remaining capacity. This not only prolongs the endurance of the device, but also ensures stable power supply to external devices, meeting the needs of long-term outdoor use.

[0027] The hardware and software parts of the power supply device of the present application are designed in a modular manner, and the working modules and components of the hardware part, as well as the instructions, parameters and algorithms of the software part can be easily replaced and / or upgraded in the later stage, thereby reducing the construction and maintenance costs of the system. BRIEF DESCRIPTION OF DRAWINGS

[0028] The present application can be further understood from the following description in conjunction with the accompanying drawings. The components in the drawings are not necessarily drawn to scale, but the emphasis is placed on showing the principles of the embodiments. In different views, the same reference numerals designate corresponding parts.

[0029] BRIEF DESCRIPTION OF DRAWINGS: 10 - Mobile chassis; 20 - Assembly; 22 - Main frame; 24a - Upper sub-frame; 24b - Lower sub-frame; 26a - Left sub-frame; 26b - Right sub-frame; 28a - Left triangular frame; 28b - Right triangular frame; 40 - Mobile chassis; 44 - Drive controller; 46 - Tracking controller; 500 - Computing architecture; 502 - Bus; 504 - Processor; 506 - Main memory; 508 - Read only memory; 510 - Storage device; 512 - Display; 514 - Input device; 516 - Cursor control device; 518 - Network device;

[0030] Figure 1 Schematic diagram of the power supply device described in the embodiments of the present application;

[0031] Figure 2 Schematic diagram of the expansion steps of the assembly described in the embodiments of the present application;

[0032] Figure 3 And Figure 4 Schematic diagram of the solar model described in the embodiments of the present application;

[0033] Figure 5 Schematic diagram of the architecture of the mobile chassis in the present application;

[0034] Figure 6 Schematic diagram of the architecture of the computer system used in the embodiments of the present application. DETAILED DESCRIPTION

[0035] In order to make the technical solutions and advantages of the present application clearer, the present application will be further described in detail below in combination with its embodiments; it should be understood that the specific embodiments described herein are only used to explain the present application and do not limit the present application. For those skilled in the art, other systems, methods and / or features of the embodiments will become apparent after reading the following detailed description. All such additional systems, methods, features and advantages are intended to be included within the scope of the present application. Included within the scope of the present application and protected by the appended claims. Additional features of the disclosed embodiments are described in the following detailed description, and will be apparent to one of ordinary skill in the art based on the following detailed description.

[0036] The same or similar reference numerals in the drawings of the embodiments of the present application correspond to the same or similar components; in the description of the present application, it is understood that if the orientations or positional relationships indicated by the terms "upper", "lower", "left", "right" and the like are based on the orientations or positional relationships shown in the drawings, they are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the devices or components referred to must have a particular orientation. The orientation is constructed and operated in a particular way, so the terms describing the positional relationship in the drawings are only used for exemplary illustration, and cannot be understood as a limitation on the present patent. For those skilled in the art, the specific meanings of the above terms can be understood according to the specific circumstances.

[0037] Embodiment one: exemplarily, a portable power supply device based on a solar charger is proposed, the power supply device comprising: a photovoltaic assembly, an energy storage assembly, and a mobile assembly;

[0038] The photovoltaic assembly comprises a plurality of photovoltaic panels, a plurality of frames, a plurality of linear actuators, a pitch angle adjusting mechanism, and related circuits for photovoltaic panel electric energy transmission and for linear actuator electric energy transmission;

[0039] The energy storage assembly is installed inside the mobile assembly and comprises an electric converter, a battery, and an input / output circuit;

[0040] The mobile assembly comprises a mobile chassis, a drive controller, and a tracking controller; the mobile assembly is used to carry the photovoltaic assembly and the energy storage assembly, and provides power for driving the power supply device to move or rotate as a whole;

[0041] Among them, a plurality of support frames are used to fixedly install corresponding photovoltaic panels; the support frames are driven to change by a plurality of linear actuators to realize the overall expansion and contraction deformation of the photovoltaic assembly; a photovoltaic receiving surface is formed by one or more photovoltaic panel receiving surfaces exposed to the outside;

[0042] The pitch angle adjusting mechanism comprises a telescopic arm and a driving mechanism; the moving end of the telescopic arm is installed at the bottom of the photovoltaic assembly, the fixed end of the telescopic arm is fixed to the mobile chassis, the normal angle of the photovoltaic receiving surface is changed by changing the joint relative angle of the telescopic arm; and after the photovoltaic assembly is deformed by contraction, the photovoltaic assembly is lowered by the telescopic arm so that the photovoltaic assembly as a whole covers the surface of the mobile chassis;

[0043] Preferably, among the plurality of frames in the photovoltaic assembly, there is a main frame, the main frame is arranged in the center, and a sub-frame is arranged above, below, left and right of the main frame, respectively; each sub-frame is connected to the main frame through a slide rail mechanism; a plurality of photovoltaic panels are installed on the main frame and the four sub-frames, respectively;

[0044] Furthermore, triangular frames are respectively set on the left and right sub-frames; each triangular frame is connected to the left and right sub-frames through a folding mechanism; each triangular frame is equipped with a photovoltaic panel of a corresponding shape.

[0045] With the above settings, the sub-frames located above, below, left, and right of the main frame slide and are housed inside the main frame via a slide rail mechanism, completely covering the main frame in a stacked state.

[0046] Preferably, slide rails corresponding to the left and right sub-frames are respectively provided on the upper and lower edges of the main frame; and slide rails corresponding to the upper and lower sub-frames are respectively provided on the left and right edges of the main frame.

[0047] Furthermore, each sub-frame is configured with at least one of the linear actuators to drive the sub-frame to slide along its configured slide rail, thereby driving the sub-frame to expand and contract relative to the main frame;

[0048] Preferably, the tracking controller includes a three-axis gyroscope sensor and a positioning sensor; the three-axis gyroscope sensor is disposed on the back of the main frame and measures the pitch angle of the photovoltaic receiving surface based on the pitch angle of the main frame; the positioning sensor is used to determine the global latitude and longitude of the power supply device;

[0049] The tracking controller calculates the solar elevation angle and solar azimuth angle based on the obtained elevation angle data of the photovoltaic receiving surface and the current global latitude and longitude data; and automatically controls the telescopic arm to adjust the elevation angle of the photovoltaic receiving surface.

[0050] Furthermore, the tracking controller is circuitically coupled to the drive controller; the drive controller, in conjunction with the tracking controller, automatically controls the rotation of the mobile chassis to change the horizontal orientation of the photovoltaic receiving surface;

[0051] Preferably, the mobile chassis includes at least one drive motor and a power sensor; the drive motor outputs power to drive the mobile chassis to move and / or rotate; the power sensor detects the user's pushing and pulling action on the power supply device, and the drive controller controls the output power of the drive motor according to the user's pushing and pulling direction to assist the user in performing the pushing and pulling action;

[0052] Preferably, the power supply device includes an indicator light on its surface to indicate to the user how to make directional adjustments to the power supply device;

[0053] As attached Figure 1 As shown, an exemplary embodiment of the power supply device is illustrated;

[0054] Wherein the combination 20 formed by the combination of multiple photovoltaic panels through the frame and the mobile chassis 10 are shown;

[0055] As shown in the accompanying Figure 1 The combination 20 includes a main frame 22, an upper auxiliary frame 24a and a lower auxiliary frame 24b above the main frame 22, and a left auxiliary frame 26a and a right auxiliary frame 26b on the left and right sides of the main frame 22; and further provided with two left triangular frames 28a and two right triangular frames 28b on the left auxiliary frame 26a and the right auxiliary frame 26b respectively;

[0056] Further, each auxiliary frame is provided with a linear actuator for driving and controlling its movement relative to the main frame; Specifically, as shown in the accompanying Figure 2 The changes of the combination 20 during the expansion process are shown; the combination 20 is driven by multiple linear actuators to smoothly expand each auxiliary frame along the slide rail from the main frame; when the auxiliary frame is fully expanded, a complete photovoltaic receiving surface is formed; wherein the left auxiliary frame 26a and the right auxiliary frame 26b are respectively provided with triangular frames connected with the left and right auxiliary frames through folding mechanisms; during expansion, the triangular frames are also controlled to expand by the linear actuators, increasing the overall light receiving area of the photovoltaic assembly;

[0057] When the combination 20 needs to change from the expanded state to the contracted state, the multiple linear actuators operate in reverse, and each auxiliary frame is driven by the linear actuator to shrink along the slide rail to the center of the main frame, and finally covers the main frame in a stacked manner; in the contracted state, the assembly 20 can be kept compact and stored, reducing the overall space occupied, and can be used as the top cover structure of the mobile chassis 10 to protect the back of the assembly 20 and the multiple components inside the mobile chassis 10;

[0058] Preferably, the multiple linear actuators are powered by the energy storage assembly;

[0059] In a photovoltaic power generation system, the incident angle of sunlight on the photovoltaic panel is crucial, because the incident angle of the sun directly determines the amount of solar radiation received by the photovoltaic panel, thereby affecting its output power and power generation efficiency; the more parallel the incident angle of the sun to the plane of the photovoltaic panel, the more effective the amount of solar radiation received by the photovoltaic panel, and the higher the power generation efficiency; therefore, tracking the position of the sun and dynamically adjusting the angle of the photovoltaic panel can significantly improve the power generation efficiency, especially in the case of constantly changing sun position;

[0060] Based on the technical principle of photovoltaic panels, the radiation power received by the photovoltaic panel is in a sinusoidal relationship with the incident angle, which can be expressed by the following formula:

[0061] P=P0×cos(θ);

[0062] In the above formula, P is the actual solar radiation power received by the photovoltaic panel, P0 is the vertical incident power of solar radiation, i.e. the power when the incident angle is 0 degrees; θ is the incident angle of sunlight relative to the surface of the photovoltaic panel; when the incident angle θ is 0°, i.e. the sunlight is vertically incident on the photovoltaic panel, the radiation power received by the photovoltaic panel is the maximum; as the sun moves, the θ angle gradually changes, the value of cos(θ) decreases, resulting in a gradual decrease in the radiation power received by the photovoltaic panel, and eventually reaching a power generation dead zone where the photovoltaic panel fails to generate any power;

[0063] Due to the rotation and revolution of the earth, the position of the sun (azimuth angle and altitude angle) changes constantly throughout the day, and the incident angle also changes accordingly; in particular, in areas where seasonal changes are obvious, the solar altitude angle is low in winter and the incident angle is large, resulting in a significant reduction in the amount of solar radiation received by the photovoltaic panel; if no sun tracking is performed, the photovoltaic panel can only receive part of the radiation energy, greatly reducing the efficiency;

[0064] Further, as shown in the accompanying Figure 3 and accompanying Figure 4 , for illustrating the angle relationship between the normal of the photovoltaic receiving surface and the sun;

[0065] First, define the solar angle model; establish a three-axis coordinate system on the ground; among them, take the x-axis and y-axis as the two orthogonal axes of the horizontal main direction, and take the h-axis as the vertical axis perpendicular to the horizontal plane; the position of the sun is defined by two angles, i.e. the solar elevation angle θ s and the solar azimuth angle η s ; the elevation angle θ s is the angle from the ground to the position of the sun in the sky; the larger the solar elevation angle, the higher the position of the sun; when the solar elevation angle θ s is 0 degrees, the sun is on the horizon, and when the solar elevation angle is 90 degrees, the sun is directly above the observation origin;

[0066] In addition, the azimuth angle η s is measured clockwise from the north direction, which represents the angle of the horizontal projection of the sun on the ground relative to the north; for example, the solar azimuth angle of the east direction is 90 degrees, the south direction is 180 degrees, and the west direction is 270 degrees;

[0067] Further, the declination angle δ and the time angle ω are introduced for calculation; the calculation method of the declination angle δ is as follows:

[0068] ;

[0069] In the above formula, n is the number of days, and n = 1 on January 1, and so on; the above formula introduces the values of time and date (year, month, day, hour, minute and second) and the geographic location index longitude (φ) to calculate the elevation angle θ of the sun s and azimuth angle η s The sun vector is calculated by the following formula;

[0070] ;

[0071] ;

[0072] ;

[0073] wherein θ z is the zenith angle, that is, the angle between the sun and the direction perpendicular to the ground, the value range is 0° to 90°; when the sun is directly overhead, the zenith angle is 0°; when the sun is on the horizon, the zenith angle is 90°;

[0074] Through the above calculation, the power supply device can calculate the position and angle of the sun in real time based on the known geographic location and the time, and use it as a control to adjust the angle of the photovoltaic receiving surface and the azimuth of the moving chassis by the photovoltaic assembly;

[0075] As shown in the accompanying Figure 4 , in the preferred embodiment, the moving assembly includes a moving chassis 40, a drive controller 44 and a tracking controller 46; the moving assembly 40 is used to carry the photovoltaic assembly, the energy storage assembly, and provide power to drive the power supply device to move or rotate as a whole;

[0076] The moving chassis 40 includes a drive mechanism 42 and a housing; the drive mechanism 42 is fixedly installed inside the housing; and the housing is also used to load and protect the photovoltaic assembly and the energy storage assembly;

[0077] The drive mechanism 42 is in communication with the drive controller, and the power management module is electrically connected with the energy storage assembly;

[0078] The driving mechanism can include two or more driving motors as drivers; preferably, the mobile chassis includes left and right wheel groups, which are respectively controlled by independent driving motors; each motor adjusts its output power through a driving controller, and the drivers realize the steering and movement of the chassis by controlling the speed difference of the left and right wheel groups; the above settings allow the mobile chassis to perform precise linear motion and rotation, adapt to different ground friction and slope conditions; optionally, the mobile chassis can adopt a wheel structure or a track structure to ensure smooth movement of the device on various terrains; the driving controller can adjust in real time according to the motor feedback signal, ensuring that the motor output matches the current load and terrain conditions;

[0079] Preferably, the driving controller can be managed by a central processing unit (CPU) to dynamically adjust the movement state of the chassis by receiving data provided by multiple sensors arranged in the tracking controller; preferably, the sensors include integrated three-axis gyroscopes, accelerometers, and force sensors; the three-axis gyroscope is used to monitor the inclination and rotation angle of the device during movement, ensuring that the chassis remains stable under different terrain conditions; the accelerometer detects the acceleration change of the chassis, which is used to correct the inertia effect when starting or braking; the force sensor is used to sense the push-pull force applied by the user, so as to judge the user's operation intention; the driving controller adjusts the motor output power according to the sensor data, combined with the real-time position and speed information of the chassis, to realize the assistive power function; when the user pushes or pulls the device, the system adjusts the output of the motor according to the size of the push or pull force, ensuring that the device can assist the user to move smoothly;

[0080] Preferably, the driving controller includes a movement algorithm to calculate the movement path of the chassis on different terrains in combination with the position sensor and the slope sensor; the slope sensor provides real-time feedback on the current ground slope angle, and the system adjusts the motor output according to the slope to ensure that the device provides sufficient power when climbing uphill, and reduces the output to prevent sliding when descending; the positioning sensor provides global position data of the device, which is combined with a pre-set path planning algorithm to control the movement or rotation of the chassis along the specified route; the movement algorithm can also adjust the movement speed of the chassis according to the terrain conditions to ensure stable operation in complex environments;

[0081] Preferably, the power management module is integrated inside the chassis and electrically connected to the energy storage component; the power management module is configured to provide stable power supply to the driving mechanism, the driving controller, and the sensor module; preferably, the power management module is responsible for detecting the battery state and protecting the battery to avoid battery damage caused by over-discharge; preferably, the power management module also automatically adjusts the movement mode of the chassis by calculating the remaining capacity of the battery to adapt to the battery state;

[0082] According to actual measurement, the power supply device with the dual-axis adjustment function has a receiving power of 950 W / m² or more under the condition that the solar radiation is 1000 W / m² for the same area of the photovoltaic receiving area with a dynamic maintained incident angle of 0° in the same day, which is increased by about 34% compared to the receiving power of a fixed angle photovoltaic panel (assuming the incident angle is 45°), which is about 707 W / m².

[0083] (1) The receiving power of the fixed angle photovoltaic panel (assuming the incident angle is 45°) is about 707 W / m²;

[0084] (2) When the photovoltaic assembly with the dual-axis adjustment function in the present disclosure is used, the receiving power can reach 950 W / m² or more, and the power generation efficiency is increased by about 34%.

[0085] Embodiment two: this embodiment should be understood as at least containing all the features of any one of the preceding embodiments, and further improving on the basis thereof;

[0086] In a preferred embodiment, the moving chassis provides the user with an assistive force for moving the power supply device;

[0087] When the user starts to push or pull the device, the sensor module (such as an acceleration sensor or a force sensor) will monitor the force applied by the user in real time; the sensor is responsible for sensing the pushing or pulling force of the user and sending this information to the drive controller; the drive controller will determine whether the current force of the user is sufficient according to the preset logic, and if it is detected that the pushing or pulling force of the user is insufficient, the controller will send a signal to start the drive motor to start to provide assistive force for the moving chassis; at this time, the drive motor is connected to the wheels or track system of the chassis, and the assistive force is transmitted to the ground, so that the user can easily move the entire device with less force when pushing or pulling the device;

[0088] When the user stops pushing or pulling or it is detected that the pushing force applied by the user is sufficient to maintain movement, the controller will turn off the drive motor, and the assistive force function will enter a standby state; this working mode ensures that the assistive force system is only started when needed, thereby avoiding unnecessary energy consumption;

[0089] Preferably, the assistive force system includes two working modes, namely, an automatic assistive force mode and a manual assistive force mode; in the automatic assistive force mode, the assistive force system will automatically adjust the assistive force strength according to the detection of the sensor, and the user only needs to apply a slight pushing force to complete most of the moving work; in the manual assistive force mode, the user can manually start or stop the assistive force system through the control interface such as a button or a mobile application to independently control the start and stop of the assistive force;

[0090] In a preferred embodiment, the target total output torque T of one or more drive motors configured to drive the moving chassis is calculated by the following calculation formula:

[0091] ;

[0092] In the above formula, P max is the rated maximum output power of one or more driving motors; E bett is the output stage coefficient based on the electric quantity; E bett is a piecewise function, and a preferred value method is as follows:

[0093] ;

[0094] σ is the weight influence coefficient, which is used to adjust the contribution of weight to the output of the assist power, and is set by the relevant technical personnel or the user; W total is the total weight of the current power supply device; W max is the maximum weight of the power supply device; S is the slope influence coefficient, which reflects the influence of uphill or downhill on the assist power, and can be set by the relevant technical personnel; θ slope is the current ground slope angle, which can be determined by a gyroscope sensor separately arranged in the mobile chassis 10;

[0095] γ dir is the angle between the slope and the moving direction; R is the radius of the tire configured on the mobile chassis;

[0096] By reasonably setting the output time and output value of the assist power, the user can be helped to move the power supply device, without the need for the power supply device to be configured with a too strong moving power system, thereby effectively simplifying the configuration of the power supply device and reducing the production cost thereof;

[0097] Through the solar tracking system, the photovoltaic panel can automatically adjust the angle to keep a small incident angle with the sunlight, so as to receive as much radiant energy as possible; in the above embodiment, the telescopic arm of the photovoltaic assembly and the mobile chassis realize the double-axis adjustment function around the vertical axis and the horizontal axis, so that the photovoltaic receiving surface always maintains a good incident angle state.

[0098] Embodiment three: this embodiment should be understood as at least containing all the features of any one of the preceding embodiments, and further improving on the basis thereof;

[0099] Exemplarily, as shown in the accompanying Figure 5 , the implementation of the computer system 500 adopted by the driving controller is illustrated; the computer system 500 can be applied to the data storage, operation and result output process of each working module in the identification and judgment system;

[0100] Exemplarily, the computer system 500 includes a bus 502 or other communication mechanism for transmitting information, one or more processors 504 coupled with the bus 502 for processing information; the processor 504 can be, for example, one or more general-purpose microprocessors;

[0101] The computer system 500 also includes a main memory 506, such as a random access memory (RAM), cache and / or other dynamic storage devices, coupled to bus 502 for storing information and instructions to be executed by processor 504. Main memory 506 also can be used for storing temporary variables or other intermediate information during execution of instructions to be executed by processor 504. Such instructions can be stored or implemented in processor 504 accessible memory storage medium, which presents computer system 500 as a special purpose machine configured to carry out the operations specified in the instructions;

[0102] The computer system 500 further can include a read only memory (ROM) 508 or other static storage device coupled to bus 502 for storing static information and instructions for processor 504; a storage device 510, such as a magnetic disk, optical disk, or USB drive (flash drive), etc., can be coupled to bus 502 for storing information and instructions;

[0103] Still further, coupled to bus 502 can be a display 122, for displaying various kinds of information, data, media, etc., input devices 514 for allowing a user of computer system 500 to control, manipulate, and / or interact with computer system 500;

[0104] One preferred manner of interacting with the management system can be through a cursor control device 516, such as a computer mouse or similar control / navigational mechanism;

[0105] Further, computer system 500 can also include a network device 518 coupled to bus 502; where network device 518 can include components such as a wired network card, a wireless network card, a switch chip, a router, a switch, etc.

[0106] Generally, the terms "engine," "component," "system," "database," etc., as used herein, can refer to logic embodied in hardware or firmware, or to a collection of software instructions, possibly having entry and exit points, written in a programming language, such as, for example, Java, C or C++. A software component can be compiled and linked into an executable program, installed in a dynamic link library, or can be written in an interpreted programming language such as, for example, BASIC, Perl, or Python. It will be appreciated that software components can be callable from other components or from themselves, and / or can be invoked in response to detected events or interrupts;

[0107] Software components configured to execute on a computing device can be provided on a computer- readable medium, such as an optical disc, a digital video disc, a flash drive, a magnetic disc or any other tangible medium, or as a digital download (and can initially be stored) in a compressed or installable format, requiring installation, decompression or decryption, before execution; such software code can be stored, in whole or in part, on a memory device of the executing computing device, for execution by the computing device; software instructions can be embedded in firmware, such as an EPROM; it will also be appreciated that hardware components can be comprised of connected logic units (such as gates and flip-flops), and / or can be comprised of programmable units (such as programmable gate arrays or processors);

[0108] The computer system 500 includes a custom hard-wired logic, one or more ASICs or FPGAs, firmware and / or program logic which in combination with the computer system causes or programs computer system 500 to be a special purpose machine;

[0109] In accordance with one or more embodiments, the techniques herein are performed by computer system 500 in response to processor 504 executing one or more sequences of one or more instructions contained in main memory 506; such instructions can be read into main memory 506 from another storage medium, such as storage device 510; execution of the sequences of instructions contained in main memory 506 causes processor 504 to perform the process steps described herein; in alternative embodiments, hard-wired circuitry can be used in place of or in combination with software instructions;

[0110] The term "non-transitory medium" and similar terms as used herein refers to any medium that stores the data and / or instructions that cause a machine to operate in a specific manner; such a non-transitory medium can include non-volatile media and / or volatile media; non-volatile media includes, for example, optical or magnetic disks, such as storage device 510; volatile media includes dynamic memory, such as main memory 506;

[0111] Common forms of non-transitory media include, for example, a floppy disk, a flexible disk, a hard disk, a solid-state drive, a magnetic tape, or any other magnetic data storage medium, a CD-ROM, any other optical data storage medium, any physical medium with patterns of holes, a RAM, a PROM, and EPROM, a FLASH-EPROM, NVRAM, any other memory chip or cartridge, and a networked version of any of the above;

[0112] A non-transitory medium is distinct from a transmission medium, but can be used in combination with a transmission medium; a transmission medium participates in communicating information between non-transitory media; for example, a transmission medium includes a coaxial cable, a copper wire, and a fiber optic cable, including the wires that make up bus 502; a transmission medium can also take the form of acoustic or light waves, such as radio or infrared transmissions.

[0113] While the invention has been described above with reference to various embodiments, it should be understood that many changes and modifications can be made without departing from the scope of the invention. That is, the methods, systems, and devices discussed above are examples. Various configurations can be appropriately omitted, substituted, or added to various processes or components. For example, in alternative configurations, methods can be performed in a different order than those described, and / or various components can be added, omitted, and / or combined. Moreover, features described with respect to certain configurations can be combined in various other configurations, such as different aspects and elements of the configuration can be combined in a similar manner. Furthermore, the elements therein can be updated as the technology develops; that is, many elements are examples and do not limit the scope of this disclosure or the claims.

[0114] Specific details are provided in the specification to offer a thorough understanding of exemplary configurations, including implementations. However, configurations can be practiced without these specific details; for example, well-known circuits, processes, algorithms, structures, and techniques have been shown without unnecessary detail to avoid obscuring the configuration. This description provides only exemplary configurations and does not limit the scope, applicability, or configuration of the claims. Rather, the foregoing description of the configurations will provide those skilled in the art with an enabling description for implementing the described techniques. Various changes can be made to the function and arrangement of the elements without departing from the spirit or scope of this disclosure.

[0115] In summary, the above detailed description is intended to be illustrative rather than restrictive, and it should be understood that these embodiments are for illustrative purposes only and not for limiting the scope of protection of the invention. After reading the description of this invention, those skilled in the art can make various alterations or modifications to the invention, and these equivalent changes and modifications also fall within the scope defined by the claims of this invention.

Claims

1. A portable power supply device based on a solar charger, characterized in that, The power supply device includes: photovoltaic modules, energy storage modules, and mobile modules; The photovoltaic module includes multiple photovoltaic panels, multiple frames, multiple linear actuators, a pitch angle adjustment mechanism, and related circuits for power transmission of the photovoltaic panels and the linear actuators. The energy storage component is installed inside the mobile component and includes an electric converter, a battery, and input / output circuitry. The mobile component includes a mobile chassis, a drive controller, and a tracking controller; the mobile component is used to carry the photovoltaic module and the energy storage module, and to provide the power to drive the power supply device to perform overall displacement or rotation; The system includes multiple frames for mounting corresponding photovoltaic panels; the frames are driven by multiple linear actuators to transform, thereby enabling the overall expansion and contraction of the photovoltaic modules; and a photovoltaic receiving surface is formed by the receiving surface of one or more photovoltaic panels exposed to the outside. The pitch angle adjustment mechanism includes a telescopic arm and a drive mechanism; the movable end of the telescopic arm is installed at the bottom of the photovoltaic module, and the fixed end of the telescopic arm is fixed to the mobile chassis. By changing the relative angle of the joints of the telescopic arm, the normal angle of the photovoltaic receiving surface is changed; and after the photovoltaic module shrinks and deforms, the photovoltaic module is lowered by the telescopic arm so that the photovoltaic module as a whole covers the surface of the mobile chassis. The photovoltaic module comprises multiple frames, including a main frame, which is positioned in the center. Sub-frames are respectively provided on the top, bottom, left and right sides of the main frame, and each sub-frame is connected to the main frame through a slide rail mechanism; multiple photovoltaic panels are respectively installed on the main frame and the four sub-frames; Furthermore, triangular frames are respectively set on the left and right sub-frames; each triangular frame is connected to the left and right sub-frames through a folding mechanism; each triangular frame is equipped with a photovoltaic panel of a corresponding shape. With the above settings, the sub-frames located above, below, left, and right of the main frame slide and are housed inside the main frame via a slide rail mechanism, completely covering the main frame in a stacked state. The upper and lower edges of the main frame are respectively provided with slide rails corresponding to the sub-frames on the left and right sides; Slide rails corresponding to the upper and lower sub-frames are respectively provided on the left and right edges of the main frame; Furthermore, each sub-frame is configured with at least one of the linear actuators to drive the sub-frame to slide along its configured slide rail, thereby driving the sub-frame to expand and contract relative to the main frame; The mobile chassis includes a calculation of the output torque of the drive motor based on the remaining power of the power supply device, the total weight of the power supply device, the slope of the current location, and the relationship between the direction of travel and the slope. The target total output torque T of one or more drive motors configured to drive the mobile chassis is calculated using the following formula: ； In the above formula, P max E represents the rated maximum output power of one or more drive motors. bett The output stage coefficient is based on the amount of electricity. E bett Given a piecewise function, its values ​​are determined as follows: ； σ is the weight influence coefficient, used to adjust the contribution of weight to the power assist output, and is set by relevant technicians or users; W total W represents the total weight of the current power supply unit. max θ represents the maximum weight of the power supply unit; S is the slope influence coefficient, reflecting the impact of going uphill or downhill on the assist power, which can be set by relevant technical personnel; slope The current ground slope angle can be determined by a gyroscope sensor separately installed in the mobile chassis; γ dir R is the angle between the slope and the direction of movement; R is the radius of the tires on the mobile chassis.

2. The power supply device as described in claim 1, characterized in that, The tracking controller includes a three-axis gyroscope sensor and a positioning sensor; the three-axis gyroscope sensor is disposed on the back of the main frame and measures the pitch angle of the photovoltaic receiving surface based on the pitch angle of the main frame; the positioning sensor is used to determine the global latitude and longitude of the power supply device. The tracking controller calculates the solar elevation angle and solar azimuth angle based on the obtained elevation angle data of the photovoltaic receiving surface and the current global latitude and longitude data; and automatically controls the telescopic arm to adjust the elevation angle of the photovoltaic receiving surface. Furthermore, the tracking controller is coupled to the drive controller circuit; The drive controller works in conjunction with the tracking controller to automatically control the rotation of the mobile chassis, thereby changing the horizontal orientation of the photovoltaic receiving surface.

3. The power supply device as described in claim 2, characterized in that, The mobile chassis includes at least one drive motor and a sensor; the drive motor outputs power to drive the mobile chassis to move and / or rotate; the sensor detects the user's pushing and pulling action on the power supply device, and the drive controller controls the drive motor to output a specified torque of assist force according to the user's pushing and pulling direction, so as to intervene and assist the user in pushing and pulling actions.

4. The power supply device as described in claim 3, characterized in that, The power supply device includes indicator lights on its surface to guide the user in making directional adjustments to the power supply device.

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