Off-grid solar charging device and charging system

Abstract

The utility model discloses an off-grid solar charging device and a charging system. The off-grid solar charging device comprises one or more charging assemblies; the charging assembly comprises a first shell, a second shell, a short circuit plug-in and a power port. A circuit board is arranged between the first shell and the second shell and is wrapped in the first shell and the second shell, the first shell is provided with a plurality of charging grooves, charging ports are arranged in the charging grooves, charging equipment is inserted into the charging grooves, and the charging equipment is charged through the charging ports. The charging ports are electrically connected in series to charge charging equipment; when the short-circuit plug-in is inserted into any one or more charging ports, the charging ports are short-circuited, the charging ports which are not short-circuited are in a normal working state, and the charging equipment which is currently in a charging state is in a normal charging state. The scheme provided by the utility model is low in cost and high in charging efficiency, and can fully meet basic power demands of local residents in daily life.

Description

Technical Field

[0001] This application relates to the field of electronic equipment technology, specifically to an off-grid solar charging device and charging system. Background Technology

[0002] In the context of profound changes in the global energy landscape, the emergence of off-grid solar technology is by no means accidental, but rather an inevitable result of the combined effects of multiple factors.

[0003] First, the pressure of the energy crisis and energy structure transformation has prompted the search for new energy solutions. With the continued development of the world economy, the consumption of traditional fossil fuels such as coal, oil, and natural gas is increasing daily, while reserves are dwindling, leading to a growing contradiction between energy supply and demand. At the same time, the combustion of fossil fuels produces large amounts of pollutants such as carbon dioxide and sulfur dioxide, exacerbating global warming, acid rain, and other environmental problems, posing serious threats to ecosystems and human health. To achieve sustainable energy supply and environmental protection, countries worldwide are actively promoting the transformation of their energy structures towards clean and renewable energy. Solar energy, as a clean energy source with abundant reserves and wide distribution, has become a key development focus.

[0004] Secondly, traditional power supply methods have significant limitations in certain scenarios. In remote mountainous areas, islands, and deserts, the complex terrain and dispersed population make it extremely costly to build power grids and difficult to maintain them, hindering access to a stable power supply. Furthermore, after natural disasters such as earthquakes, typhoons, and floods, traditional power grids are often severely damaged, leading to widespread power outages that disrupt rescue efforts and disrupt basic living needs. In these situations, off-grid solar technology, with its ability to operate independently without relying on a traditional power grid, can quickly provide power to these areas and scenarios, meeting basic electricity needs for lighting, communications, and medical equipment.

[0005] Furthermore, the diversification of household and individual electricity needs has also driven the development of off-grid solar technology. In modern life, people are increasingly reliant on electronic devices, with smartphones, tablets, and laptops becoming necessities for life and work. At the same time, the usage scenarios for small electrical devices such as portable lighting, portable fans, and small humidifiers in the home are becoming increasingly diverse, especially in outdoor camping, yard activities, and emergency backup scenarios, where the demand for convenient and reliable power is becoming increasingly strong. Traditional battery power supply methods suffer from limited power and the need for frequent replacements, while off-grid solar charging equipment can utilize ubiquitous solar energy to provide a continuous and stable power supply for these devices, greatly meeting people's diverse electricity needs. Utility Model Content

[0006] This application provides an off-grid solar charging device and system, which is low-cost, environmentally friendly, and provides a continuous and stable power supply for charging equipment, fully meeting the basic electricity needs of local residents and reducing their electricity costs. The specific solution is as follows:

[0007] In a first aspect, this application provides an off-grid solar charging device, comprising: one or more charging components; when there are multiple charging components, the charging components are connected by an active connection; each charging component includes: a first housing, a second housing, a short-circuit plug, and a power port; the first housing and the second housing are fitted together; a circuit board is disposed between the first housing and the second housing and is enclosed within the first housing and the second housing; the first housing is provided with multiple charging slots, each charging slot is provided with a charging port; a charging device is inserted into the charging slot and charged through the charging port; the charging ports are connected in series to charge the charging device; when the short-circuit plug is inserted into any one or more charging ports, the charging port is short-circuited, and the un-short-circuited charging ports are in normal working condition, and the charging device currently in the charging state is in normal charging condition; the power port provides power to the circuit board to convert solar energy into electrical energy, or provides power from the public power grid.

[0008] Optionally, the charging components are connected by a movable connection, including: sliders and slide rails are provided on both sides of the charging component along its length; when there are at least two charging components, the slider provided on the first charging component can be embedded in the slide rail of the second charging component, so that the first charging component and the second charging component form a movable connection integral structure.

[0009] Optionally, the slider includes a groove on the charging assembly and a protrusion within the groove; the groove has a first opening on its end side in the length direction for mounting the slider to a slide rail; the protrusion includes a first protrusion extending from the bottom of the groove toward the opening, and a second protrusion located on the first protrusion, the first protrusion having a physical space distance from both sides of the groove; the two ends of the second protrusion extending toward the width direction of the opening and having a physical space distance from the groove; the height of the protrusion is equal to, less than, or greater than the depth of the groove.

[0010] Optionally, the slide rail includes: a slide groove located on the charging component, and slide arms extending into the slide groove on both sides of the slide groove; the slide groove has a second opening on the end side in the length direction to guide the protrusion to be inserted into the slide groove, the slide groove having a depth and width matching the protrusion; the slide arms have elastic deformation capable of covering both ends of the second protrusion during and after the protrusion is inserted into the slide groove.

[0011] Optionally, the slide has a second opening on its end side in the length direction to guide the protrusion into the slide, including: one end of the slide has a second opening in the length direction to guide the protrusion into the slide, and the other end has a closed structure to restrict the protrusion from sliding out of the slide, the second opening being the inlet and outlet of the protrusion; or, the groove has a first opening on its end side in the width direction to cooperate with the slide rail, including: one end of the groove has a first opening in the width direction to cooperate with the slide rail, and the other end has a closed structure to restrict the protrusion from sliding out of the slide.

[0012] Optionally, the length direction of the groove is the same as the height direction of the charging component, and the end face of the groove in the length direction is located in the same plane as the end face of the charging component in the height direction. Correspondingly, the length direction of the groove is the same as the height direction of the charging component, and the end face of the groove in the length direction is located in the same plane as the end face of the charging component in the height direction. Alternatively, the length direction of the groove is the same as the length direction of the charging component, and the corresponding end faces of the groove and the charging component in the length direction are located in the same plane. Correspondingly, the length direction of the groove is the same as the length direction of the charging component, and the corresponding end faces of the groove and the charging component in the length direction are located in the same plane.

[0013] Optionally, when the length direction of the groove is the same as the height direction of the charging component, and the end face of the groove in the length direction is on the same plane as the end face of the charging component in the height direction, and correspondingly, the length direction of the slide groove is the same as the height direction of the charging component, and the end face of the slide groove in the length direction is on the same plane as the end face of the charging component in the height direction, the slider and the slide rail are respectively disposed on the side area between the charging grooves; when the length direction of the groove is the same as the length direction of the charging component, and the corresponding end faces of the groove and the charging component in the length direction are on the same plane, and correspondingly, the length direction of the slide groove is the same as the length direction of the charging component, and the corresponding end faces of the slide groove and the charging component in the length direction are on the same plane, the slider and the slide rail are respectively disposed on both sides of the charging component in the length direction.

[0014] Optionally, the charging slot is a semi-enclosed or fully enclosed space, and the height of the charging slot from bottom to top meets the requirements for fixing the charging device when it is plugged into the charging slot; when the charging slot is a semi-enclosed space, a limiting prism is provided at the opening in the opening direction of the charging slot to restrict the charging device to be inside the charging slot when it is charging, and to keep it plugged into the charging port.

[0015] Optionally, the short-circuit plug includes: a short-circuit insertion part, a fixing part, and an operating part; the short-circuit insertion part is provided with a short-circuit pin, which is inserted into the charging port of the charging slot to short-circuit the charging port; the fixing part is connected to the short-circuit insertion part, and the fixing part, through the assembly structure relationship between the fixing part and the receiving cavity provided in the charging component, allows the short-circuit plug to be placed in the receiving cavity, or allows the short-circuit plug to be removed from the receiving cavity; the operating part is connected to the fixing part, and controls the short-circuit insertion part and the fixing part to be placed in the receiving cavity, or controls the short-circuit insertion part and the fixing part to be removed from the receiving cavity.

[0016] Optionally, the receiving cavity is disposed on the side along the length of the charging component; the number of receiving cavities matches the number of short-circuit plugs; the number of short-circuit plugs is less than the number of charging ports of a single charging component, and the number of short-circuit plugs remains unchanged when there are multiple charging components.

[0017] Optionally, the receiving cavity includes: a first slot located on the side of the charging component along its length, a second slot located at the bottom of the charging component, and the first slot having a first preset distance from the bottom edge of the charging component, and the second slot having a second preset distance from the opposite side of the first slot; when the short-circuit plug and the fixing part are cylindrical, the first slot has a shape that matches the short-circuit plug and the fixing part, and the second slot has a shape that is the same as or different from the first slot.

[0018] Optionally, the receiving cavity further includes a sleeve extending from the first slot into the second slot, the sleeve having an assembly structure relationship with the fixing part, and the length of the sleeve being less than the length of the second slot.

[0019] Optionally, the assembly structure includes: a fixing protrusion disposed on the inner wall of the sleeve, the fixing protrusion having an arc-shaped convex surface, the arc-shaped convex surface being opposite to the entry direction when the short-circuit plug is placed in the receiving cavity; an arc-shaped fixing groove disposed on the fixing part, the curvature of the arc-shaped fixing groove near the end of the short-circuit plug is less than the curvature near the end of the operating part; and a crack disposed on the inner wall of the sleeve extending from the second groove towards the first groove, the crack depth being less than the length of the sleeve.

[0020] Optionally, when multiple charging components are connected in an active connection manner, the charging components are connected in a parallel electrical connection manner.

[0021] Optionally, the outer surface of the bottom of the second housing is provided with a mounting structure for mounting the charging component on the mounting surface. The mounting structure includes: a mounting channel and a limiting plate located at the edge of the mounting channel; the length direction of the mounting channel is the same as the width direction of the charging component and is located in the middle area of ​​the second housing; the limiting plate is located on both sides of the mounting channel and extends towards the center of the mounting channel, forming a rail groove with the mounting channel; the two sides of the mounting rail provided on the mounting surface can slide into the rail groove, and after the charging component is installed on the mounting rail, the side of the charging component facing the mounting surface and the side of the mounting rail close to the mounting surface are on the same plane.

[0022] Optionally, the charging assembly also includes a control switch that controls the power level supplied from the power port to the charging port.

[0023] Secondly, this application also provides an off-grid solar charging system, including: an off-grid solar charging device, a charging device, and a solar power supply device; the solar power supply device and the off-grid solar charging device are interconnected, the solar power supply device converts solar energy into electrical energy through solar panels, and provides power to the power port in the off-grid solar charging device through the power output terminal of the solar power supply device; the off-grid solar charging device obtains the power provided by the solar power supply device through the power port, and charges the charging device through the charging port in the off-grid solar charging device, wherein a short-circuit plug is installed on the charging port in the idle state; the charging device is plugged into the charging slot of the off-grid solar charging device, and obtains the power provided by the off-grid solar charging device through the charging port in the charging slot.

[0024] Compared with the prior art, this application has the following advantages:

[0025] The off-grid solar charging device provided in this application consists of one or more charging components. When only one charging component is configured, the device can replenish the power of the charging equipment. If the number of charging equipment is large, multiple charging components can be spliced ​​together through a movable connection, thereby flexibly meeting the charging needs of any number of charging equipment. In addition, the charging ports of the charging components of this device are connected in series to charge the charging equipment. Compared with the existing charging devices that use internal parallel electrical connections, only one charging control module needs to be set in the charging circuit of the charging component to charge the charging equipment connected to the charging ports (the charging equipment is also connected in series based on the charging ports) through the series charging ports in the charging tank. There is no need to equip each device with a complex charging control circuit, which reduces the cost and complexity of the charging equipment and the difficulty of charging management. At the same time, by reducing the current intensity, line loss is reduced, costs are reduced, and charging efficiency is improved. Therefore, the off-grid solar charging device provided in this application has high charging efficiency and low cost, which fully meets the basic electricity needs of local residents in their daily lives while reducing the electricity costs of local residents. Attached Figure Description

[0026] Figure 1 This is a schematic diagram of the structure of the off-grid solar energy device provided in the embodiments of this application.

[0027] Figure 2 This is a schematic diagram of the structure of the charging component provided in the embodiments of this application.

[0028] Figure 3 This is a schematic diagram of the structure of the movable connection between charging components provided in the embodiments of this application.

[0029] Figure 4 This is a schematic diagram of the slider structure in an embodiment of this application.

[0030] Figure 5 This is a schematic diagram of the slide rail structure in an embodiment of this application.

[0031] Figure 6 This is a schematic diagram of the closed structure of the slider in the embodiment of this application.

[0032] Figure 7 This is a schematic diagram of the charging slot in an embodiment of this application.

[0033] Figure 8 This is a schematic diagram of the short-circuit plug-in structure in an embodiment of this application.

[0034] Figure 9 This is a schematic diagram showing the location of the receiving cavity on the charging component in an embodiment of this application.

[0035] Figure 10This is a cross-sectional view taken from a bottom angle in the structural schematic diagram of the receiving cavity in the embodiments of this application.

[0036] Figure 11 This is a partially enlarged structural diagram of the cavity.

[0037] Figure 12 This is a schematic diagram of the installation structure in the embodiments of this application.

[0038] Figure 13 This is a schematic diagram of the installation track in an embodiment of this application.

[0039] Figure 14 This is a schematic diagram of the parallel connection of multiple charging components in an embodiment of this application.

[0040] Figure 15 This is a schematic diagram of the off-grid solar charging system in the embodiments of this application.

[0041] Figure 16 This is a schematic diagram of the off-grid solar charging method in the embodiments of this application.

[0042] Reference numerals: 101 Charging component, 101-1 First charging component, 101-2 Second charging component, 102 First housing, 103 Second housing, 104 Short-circuit plug, 105 Charging slot, 106 Charging port, 107 Charging device, 108 Power port, 201 Circuit board, 301 Slider, 302 Slide rail, 401 Groove, 402 Protrusion, 403 First opening, 404 First protrusion, 405 Second protrusion, 501 Slide groove, 502 Slide arm, 503 Second opening, 504 Closed structure, 601 Closed structure, 701 Limiting prism, 702 Opening end, 703 Fixed... Fixed buckle, 801 short-circuit plug, 802 fixing part, 803 operating part, 804 short-circuit pin, 805 arc-shaped fixing groove, 901 receiving cavity, 1001 first groove, 1002 second groove, 1101 sleeve, 1102 fixing protrusion, 1103 arc-shaped convex surface, 1104 cut, 1201 mounting structure, 1202 mounting channel, 1203 limiting plate, 1204 rail groove, 1301 mounting rail, 1302 rail clamping edge, 1303 limiting groove, 1304 mounting hole, 1501 off-grid solar charging device, 1502 charging equipment, 1503 solar power supply device. Detailed Implementation

[0043] To enable those skilled in the art to better understand the technical solutions of this application, the application will be clearly and completely described below with reference to the accompanying drawings of the embodiments. However, this application can be implemented in many other ways different from those described below. Therefore, based on the embodiments provided in this application, all other embodiments obtained by those skilled in the art without creative effort should fall within the scope of protection of this application.

[0044] As can be seen from the above background technology, the off-grid solar charging device and charging system provided in this application is a concept proposed based on the existing scenario of difficulty in accessing electricity in remote and underdeveloped areas.

[0045] From a geographical perspective, remote and underdeveloped areas are mostly located in complex terrains such as mountains, deserts, and islands. In mountainous areas, the undulating terrain and steep slopes make it extremely difficult to construct power transmission lines, requiring them to cross steep peaks and deep valleys. This not only presents immense construction challenges but also makes the lines highly susceptible to geological disasters such as landslides and mudslides, leading to line damage. In desert areas, the vast sandy land and extreme climatic conditions, such as wind erosion and extreme heat, place extremely high demands on the durability of power grid equipment, making it difficult for conventional power grids to operate stably. In island areas, the corrosive nature of seawater, tides, and natural disasters such as typhoons cause the construction and maintenance costs of the power grid to increase exponentially. For example, some mountainous villages in western my country are far from the main power grid. Even if grid coverage is achieved at great cost, frequent power outages due to severe weather can make it difficult to guarantee a stable power supply. This creates objective conditions for the application of off-grid solar charging equipment.

[0046] From an economic perspective, remote and underdeveloped areas often have low population density and lagging economic development, with local residents having limited incomes that make it difficult to afford the high costs of power grid construction. At the same time, for power companies, the return on investment for laying power grids in these areas is extremely low, making commercial sustainability difficult and hindering the implementation of traditional power grid extension plans. For example, in some villages south of the Sahara in Africa, local residents have meager daily incomes, making it difficult to afford the high costs of connecting to a large power grid, and power companies lack enthusiasm for power grid construction due to insufficient expected returns.

[0047] From the perspective of people's livelihood needs, with the development of modern society, the demand for electricity among residents in remote and underdeveloped areas both domestically and internationally (such as Africa) is becoming increasingly urgent. Essential electronic products such as lighting and mobile phones rely on electricity to operate. Therefore, providing a low-cost and convenient charging method for electrical products, such as lighting equipment, using off-grid solar power technology has become a feasible solution that meets the affordability and electricity needs of economically underdeveloped regions.

[0048] Based on this, such as Figure 1 and Figure 2As shown, this application embodiment provides an off-grid solar charging device, including: one or more charging components 101; when there are multiple charging components 101, the charging components 101 are connected by an active connection; the charging component 101 includes: a first housing 102, a second housing 103, a short-circuit plug 104, and a power port 108; the first housing 102 and the second housing 103 are fitted together; a circuit board 201 is disposed between the first housing 102 and the second housing 103, and is enclosed within the first housing 102 and the second housing 103; the first housing 102 is provided with multiple charging slots 105, the charging slots 105... The charging slot 105 is equipped with a charging port 106. The charging device 107 is plugged into the charging slot 105 and charged through the charging port 106. The charging ports 106 are connected in series to charge the charging device 107. When the short-circuit plug 104 is inserted into any one or more charging ports 106, the charging port 106 is short-circuited. The charging ports 106 that are not short-circuited are in normal working condition, and the charging device 107 that is currently charging is in normal charging condition. The power port 108 provides the circuit board 201 with power to convert solar energy into electrical energy, or provides power from the public power grid.

[0049] like Figure 1 As shown, taking the charging device 107 as a lighting device in this embodiment as an example, the charging slot 105 and the plug-in end of the charging device 107 have a matching shape structure relationship. For example, the inner side of the charging slot 105 and the outer side of the charging device 107 have matching contours. Of course, when the charging device 107 is cylindrical or other shapes, the contour of the charging slot 105 can also be set to match the shape of the charging device 107. Alternatively, the plug-in matching relationship between the charging device 107 and the charging slot 105 with various shapes and structures can be achieved by separately set matching kits or fixing devices. That is, it is sufficient to satisfy the plug-in of the charging device 107 and the charging port 106 in the charging slot 105. The stability of the charging device 107 after plugging in can be limited by the structural matching relationship between the charging slot 105 and the charging device 106. The stability of the plugging state can also be achieved by other auxiliary fixing components, such as matching kits or fixing devices.

[0050] In this embodiment, as Figure 3 As shown, the charging components 101 are connected by a movable connection, including: sliders 301 and slide rails 302 are provided on both sides of the charging component 101 along its length; when there are at least two charging components 101, the sliders 301 provided on the first charging component 101-1 can be embedded into the slide rails 302 of the second charging component 101-2, so that the first charging component 101-1 and the second charging component 101-2 form a movablely connected integral structure. Specifically, as shown... Figure 4As shown, the slider 301 includes a groove 401 located on the charging assembly 101 and a protrusion 402 located within the groove 401. The groove 401 has a first opening 403 on its longitudinal end side for mounting the slider 301 and the slide rail 302. The protrusion 402 includes a first protrusion 404 extending from the bottom of the groove towards the opening, and a second protrusion 405 located on the first protrusion. The first protrusion 404 has a physical spatial distance from both sides of the groove 401, i.e., a first predetermined distance. The two ends of the second protrusion 405 extend towards the width direction of the opening and have a physical spatial distance from the opening, i.e., a second predetermined distance. The extension height of the protrusion 402 is equal to, less than, or greater than the depth of the groove 401. In this embodiment, the first predetermined distance is greater than the second predetermined distance, i.e., the distance of the first protrusion 404 relative to the inner side of the groove 401 is greater than the distance of the second protrusion 405 relative to the inner side of the opening. The extension height of the protrusion 402 is equal to the depth of the groove 401, that is: the sum of the heights of the first protrusion 404 and the second protrusion 405 is equal to the depth of the groove 401.

[0051] In this embodiment, as Figure 5 As shown, the slide rail 302 includes: a slide groove 501 located on the charging assembly 101, and slide arms 502 extending into the slide groove on both sides of the slide groove 501; the slide groove 501 has a second opening 503 on the end side in the length direction to guide the protrusion 402 to be inserted into the slide groove 501, and the slide groove 501 has a depth and width that match the protrusion 402; the slide arms 502 have elastic deformation that can cover both ends of the second protrusion 405 during and after the protrusion 402 is inserted into the slide groove 501. Furthermore, the slide groove 501 has a second opening 503 on its longitudinal end side, guiding the protrusion 402 to embed into the slide groove 501. This includes: one end of the slide groove 501 in the longitudinal direction (which can also be understood as the height or thickness direction of the charging component) has a second opening 503 guiding the protrusion 402 to embed into the slide groove 501, and the other end has a closed structure 504 restricting the protrusion 402 from sliding out of the slide groove 501. The second opening 503 serves as both the inlet and outlet of the protrusion 402, i.e., the sliding block and the slide rail are fitted together through the first opening 403 and the second opening 503. It can be understood that, to prevent the sliding block and the slide rail from separating due to gravity or other factors, or in the absence of a bearing contact surface on the charging component, a closed structure is provided at the other end of the slide groove during the fitted installation. Accordingly, as... Figure 6As shown, in some other embodiments, the closed structure can also be provided on one side of the slider 301, that is: the groove 401 has a first opening 403 on its longitudinal end side for the slider 301 and the slide rail 302 to be installed, including: one end of the groove 401 has a first opening 403 for the slider 301 and the slide rail 302 to be installed, and the other end has a closed structure 601 to restrict the protrusion 402 from sliding out of the groove 501. Through the above embodiments, the rapid assembly and connection of two charging components can be realized, and the charging components can be kept at the same height after assembly and connection.

[0052] In the embodiment shown in the above figures, the length direction of the groove 401 is the same as the height direction of the charging component 101, and the two end faces of the groove 401 in the length direction are located on the same plane as the two end faces of the charging component 101 in the height direction, that is, the length of the groove 401 is equal to the height of the charging component 101; correspondingly, the length direction of the slide groove 501 is the same as the height direction of the charging component 101, and the two end faces of the slide groove 501 in the length direction are located on the same plane as the two end faces of the charging component 101 in the height direction, that is, the length of the slide groove 501 is equal to the height of the charging component 101.

[0053] In other embodiments, the length direction of the groove 401 may also be the same as the length direction of the charging component 101, and the two end faces of the groove 401 along the length direction are located on the same plane as the two end faces of the charging component 101 along the length direction, that is, the length of the groove 401 is equal to the length of the charging component 101; correspondingly, the length direction of the slide groove 501 is the same as the length direction of the charging component 101, and the two end faces of the slide groove 501 along the length direction are located on the same plane as the two end faces of the charging component 101 along the length direction, that is, the length of the slide groove 501 is equal to the length of the charging component 101.

[0054] This embodiment uses the example of the length direction of the groove in the slider being the same as the height direction of the charging component, and the length direction of the slide groove in the slide rail being the same as the height direction of the charging component, that is, the groove and the slide groove are arranged longitudinally; in fact, the length direction of the groove in the slider can also be the same as the length direction of the charging component, and the length direction of the slide groove in the slide rail can be the same as the length direction of the charging component, that is, the groove and the slide groove are arranged laterally.

[0055] In this embodiment, the length of the protrusion in the slider groove can be the same as the groove length. In other implementations, it can be less than or greater than the groove length. In the specific implementation process, the protrusion located in the groove can be continuous or discontinuous, as long as it can meet the matching installation of the slider and the slide rail.

[0056] The slider and slide rail can be configured in at least two ways:

[0057] Method 1: When the length direction of the groove 401 is the same as the height direction of the charging component 101, and the end face of the groove 401 in the length direction is on the same plane as the end face of the charging component 101 in the height direction, correspondingly, when the length direction of the slide 501 is the same as the height direction of the charging component 101, and the end face of the slide 501 in the length direction is on the same plane as the end face of the charging component 101 in the length direction, the slider 301 and the slide rail 302 are respectively disposed in the side area between the charging groove 105.

[0058] Method 1: When the length direction of the groove 401 is the same as the length direction of the charging component 101, and the corresponding end faces of the groove 401 and the charging component 101 in the length direction are located on the same plane, and correspondingly, the length direction of the slide 501 is the same as the length direction of the charging component 101, and the corresponding end faces of the slide 501 and the charging component 101 in the length direction are located on the same plane, the slider 301 and the slide rail 302 are respectively arranged on both sides of the length direction of the charging component 101.

[0059] In this embodiment, as Figure 1 As shown, the charging slot 105 is a semi-enclosed receiving space, meaning it has an opening. Of course, in other embodiments, the charging slot 105 can also be a fully enclosed receiving space. This embodiment is described in a semi-enclosed form. The height of the charging slot 105 from bottom to top meets the fixing requirements for the charging device 107 to be inserted into the charging slot 105. These fixing requirements can be determined in conjunction with the specifications and dimensions of the charging device, such as its length, width, and weight.

[0060] like Figure 7 As shown, when the charging slot 105 is a semi-enclosed space, to ensure a stable electrical connection between the charging device 107 and the charging port 106 within the charging slot 105 during charging, a limiting prism 701 is provided at the opening position in the opening direction of the charging slot 105 to restrict the charging device 107 from being inside the charging slot 105 during charging and to maintain a plug-in state with the charging port 106. In a specific implementation, the charging slot 105 has an open end 702 on one side along the length direction of the charging assembly 101, and a limiting prism 701 is provided at the open end 702. One side of the limiting prism 701 is attached to one end of the open end 702, and the other side is opposite to the other end of the open end 702. To further ensure the stability of the electrical connection between the charging device 107 and the charging port 106, the height of the limiting prism 701 can be the same as the height of the open end 702, or the height of the limiting prism 701 can be greater than or equal to half the height of the open end 702. Figure 1 and Figure 7As shown, in this embodiment, the limiting prisms 701 can be respectively arranged opposite to each other on both sides of the opening end 702. When there are two limiting prisms 701, the height, diameter, etc. of the limiting prisms 701 can be the same or different. In this embodiment, the limiting prisms can not only prevent the action of external environmental forces from causing intermittent connection when the bottom of the charging component is parallel to the ground, thus ensuring the stability of the connection between the charging device and the charging port, but also prevent the charging device 107 from falling out of the charging slot under the action of gravity when the charging component is installed on the wall and the bottom of the charging component is vertical. That is, they provide a support force opposite to the direction of gravity, ensuring the stability of the connection and maintaining normal working state.

[0061] Furthermore, the charging slot 105 can also be a fully enclosed space, meaning that the charging component 101 is a fully enclosed space during manufacturing. Alternatively, a fully enclosed space can be achieved by sealing the open end 702 of the charging slot 105, such as by connecting the two ends of the open end 702 with a flexible or rigid baffle, or by extending the limiting prism 701 along the length of the charging component 101 until the two ends of the open end 702 are connected. To improve the connection stability between the charging device and the charging port, the height of the flexible or rigid baffle is greater than the height of the open end. When the open end has a limiting prism, the flexible or rigid baffle can be installed in conjunction with the limiting prism, such as through a snap-fit ​​mechanism for detachable components. This allows the enclosure state of the charging slot to be adjusted to a semi-enclosed or fully enclosed state according to the needs of the usage environment or scenario. Regardless of whether the charging slot 105 is a semi-enclosed or fully enclosed space, the height of the charging slot 105 from bottom to top must meet the fixing requirements of the charging device 107 when it is inserted into the charging slot 105. This is to prevent the charging device 107 from shaking due to external factors when it is inserted into the charging slot 105, which could lead to a loose connection or detachment, and to improve the stability of the connection between the charging device and the charging port.

[0062] In this embodiment, the height of the charging slot 105 from bottom to top is related to the length of the charging device 107; the longer the charging device 107, the higher the height of the charging slot 105 from bottom to top. Figure 7As shown, the charging slot 105 also has a fixing buckle 703, which can be installed by engaging with the fixing hole on the charging device 107. The fixing hole is located on the insertion surface corresponding to the charging slot when the charging device is inserted into the charging slot. The fixing buckle 703 can further improve the installation and fit relationship between the charging device 107 and the charging slot 105, i.e., the insertion stability. Furthermore, a washer is provided at the bottom of the charging slot 105. The washer is embedded in or sleeved within the charging slot 105 at the point of contact between the charging slot 105 and the charging device 106. The washer is either discrete or continuous along the inner circumference of the charging slot 105. By providing a washer at the bottom of the charging slot, the friction between the charging device and the charging slot is increased, improving the insertion stability of the charging device.

[0063] Existing charging devices use parallel electrical connections to charge the devices. When multiple devices are connected in parallel, the total current increases. With limited power, the actual current received by each device decreases, leading to a significant drop in charging speed. Furthermore, if a short circuit or other fault occurs in one branch, the short-circuit current will cause a sharp drop in the power supply output voltage and increase the voltage division due to the internal resistance of the power supply. This not only affects the charging current and voltage of other normal branches but may also generate a large amount of heat due to the abnormally increased current, threatening circuit safety. In addition, the large total current in the parallel circuit, according to Joule's law, increases the heat generated by the line resistance with the square of the current, exacerbating line losses and reducing charging efficiency. Moreover, since the charging characteristics of each device (such as rated voltage, current, and charging cutoff conditions) differ, independent and precise current and voltage monitoring and control of each branch are required. This greatly increases the design complexity and cost of the charging management circuit and makes implementation difficult. In the embodiments of this application, the off-grid solar charging device can include multiple charging components, each charging component can be equipped with multiple charging slots, and each charging slot has one charging port. That is, each individual charging component has five charging ports connected in series. In specific application scenarios, the number of charging ports in a charging module can be determined by comprehensively considering factors such as the output voltage of the solar panel and safety parameters. For example, when the output voltage of the solar panel increases, the number of charging ports connected in series in each individual charging module will also increase. The following example... Figure 1 The off-grid solar device shown includes two charging modules 101, each equipped with five charging slots 105 for illustrative purposes. Figure 1As shown, each charging slot 105 has a charging port 106. A charging device 107 can be plugged into the charging slot 105. The charging device 107 has an input port that matches the charging port 106 in the charging slot 105. When the input port of the charging device 107 is plugged into the charging port 106 in the charging slot 105, the charging device 107 can be charged through the charging port 106. In this embodiment, the series electrical connection between the charging ports enables charging of the plugged-in charging devices. Each charging device can obtain a stable and identical current, ensuring the consistency of charging efficiency. Furthermore, the total current of the series circuit is relatively small. According to Joule's law, under the same line resistance, the heat generated by the line is lower, reducing line loss and improving energy utilization efficiency. In addition, since the current of the series devices is consistent, only the total voltage and current need to be monitored and controlled, unlike the parallel circuit where each branch needs to be independently managed. This reduces the design difficulty and cost of the charging management circuit, making management simpler and more efficient. Because the charging ports in this embodiment are connected in series, theoretically, a charging component 101 will only be in normal working condition when all its charging ports 106 are connected to the charging device 107. That is, each charging port 106 can be in normal working condition and charge the charging device 107. Therefore, to flexibly charge any number of charging devices, ensuring that the charging ports of the charging component can work normally regardless of the number of devices, in this embodiment, a short-circuit plug 104 is inserted into the charging port of an idle charging slot (a charging slot without a charging device connected), causing the idle charging slot to be in a short-circuit state. This allows the charging port connected to the charging device to be in normal working condition, enabling the charging device to charge normally.

[0064] Therefore, in this embodiment, by setting a short-circuit plug, the limitation that the number of charging devices and charging slots must be consistent for normal charging is avoided, so that the charging component can still maintain normal operation even when some charging ports in the charging slot are idle. For example, in Figure 1In this embodiment, there is one charging device 107, which is plugged into one of the charging slots 105 of the charging assembly 101. The charging port 106 in this charging slot 105 is in normal working condition and can charge the charging device 107. The other four charging ports of the charging assembly 101 are all short-circuit plugs 104, which short-circuit the four charging ports 106 and put them in a short-circuit state, without affecting the normal working condition of the charging ports 106 connected to the charging device 107. In this embodiment, after using the short-circuit plugs, the charging ports can charge the charging devices normally regardless of the number of connected charging devices. In addition, the use of short-circuit plugs has significant advantages over the design of complex MOSFETs (metal-oxide-semiconductor field-effect transistors). Specifically, MOSFETs are characterized by high cost, complex development and large workload, and their application is more suitable for scenarios with high functional integration requirements; while short-circuit plugs, with their simple operation and low cost, can significantly reduce the overall cost of off-grid solar charging devices, and are especially suitable for small-scale, short-cycle application needs.

[0065] Furthermore, such as Figure 8 As shown, the short-circuit plug 104 includes: a short-circuit insertion part 801, a fixing part 802, and an operating part 803; the short-circuit insertion part 801 is provided with a short-circuit pin 804, which is inserted into the charging port 106 of the charging slot 105 to short-circuit the charging port 106; the fixing part 802 is connected to the short-circuit insertion part 801, and the fixing part 802, through the assembly structure relationship with the receiving cavity 901 provided in the charging assembly 101, allows the short-circuit plug 104 to be placed in the receiving cavity 901, or to be removed from the receiving cavity; the operating part 803 is connected to the fixing part 802, and controls the short-circuit insertion part 801 and the fixing part 802 to be placed in the receiving cavity 901, or to control the short-circuit insertion part 801 and the fixing part 802 to be removed from the receiving cavity 901.

[0066] like Figure 9As shown, the receiving cavity 901 is disposed on the side of the charging component 101 along its length; the number of receiving cavities 901 matches the number of short-circuit plugs 104; the number of short-circuit plugs 104 is less than the number of charging ports 106 of a single charging component 101, and the number of short-circuit plugs 104 remains unchanged when there are multiple charging components 101. In practical applications, the number of charging devices can be arbitrary. If the number of charging devices equals the sum of the number of charging ports in all charging components, then all charging devices can be connected to the charging ports. If the number of charging devices is less than the sum of the number of charging ports in all charging components, the charging devices can only be connected to some charging ports, leaving the remaining charging ports unused. In this case, a short-circuit plug is inserted into the unused charging ports to short-circuit them, while the charging ports connected to the charging devices operate normally. If the number of charging devices is greater than the sum of the number of charging ports in all charging components, charging components can be added until the sum of the number of charging ports in all charging components exceeds the number of charging devices. Alternatively, some charging devices can be connected to the charging ports for charging first. After some charging devices have finished charging, the remaining charging devices can be connected to the charging ports, and a short-circuit plug is inserted into the unused charging ports to short-circuit them, while the charging ports connected to the charging devices operate normally, charging the charging devices. For example, Figure 1The off-grid solar charging device includes two charging components 101, each of which includes five charging slots 105, for a total of ten charging slots 105. Each charging slot 105 contains one charging port 106. The total number of charging ports 106 is the same as the total number of charging slots 105, which is also ten. Each additional charging component 101 adds five charging ports 106. Assuming the number of charging devices 107 is less than five, for example, if the number of charging devices 107 is three, then the three charging devices 107 are inserted into the same charging component 101. In the three charging slots, the remaining two empty charging slots 105 are filled with short-circuit plugs 104. Assuming the number of charging devices 107 is equal to 5, then every five devices can be filled with one charging component 101. If the number of charging devices 107 is 15, three charging components 101 can be filled. Therefore, a separate charging component 101 can be added to charge the charging devices 107 at the same time, or two charging components 101 can be used to charge 10 of the charging devices 107 first, and then the remaining 5 charging devices 107 can be replaced after they are fully charged. Therefore, regardless of whether the number of charging devices is less than, greater than, or equal to the number of charging ports, the number of short-circuit plugs is one less than the number of charging ports contained in a single charging component. In other words, the number of short-circuit plugs is less than the number of charging ports in a single charging component. Furthermore, when there are multiple charging components, the number of short-circuit plugs remains unchanged. For example, in the above example, one charging component includes five charging slots. When there are more than five charging devices, at least two charging components are required. If there are six charging devices, then four short-circuit plugs are sufficient, and so on. Therefore, changes in the number of charging components and charging devices do not affect the number of short-circuit plugs.

[0067] To prevent the loss of short-circuit plugs from affecting the normal operation of the charging component, a receiving cavity is provided on the side of the charging component along its length to accommodate the short-circuit plug 104. The number of receiving cavities 901 needs to match the number of short-circuit plugs 104.

[0068] In specific implementation, such as Figure 10 As shown, the receiving cavity 901 includes: a first slot 1001 located on the side of the charging component 101 along its length, a second slot 1002 located at the bottom of the charging component 101, and a first preset distance between the first slot 1001 and the bottom edge of the charging component 101, and a second preset distance between the second slot 1002 and the opposite side of the first slot 1001; when the short-circuit plug 801 and the fixing part 802 are cylindrical, the first slot 1001 matches the shape of the short-circuit plug 801 and the fixing part 802, and the second slot 1002 has the same or different shape as the first slot 1001. Further, as Figure 11As shown, the receiving cavity 901 further includes a sleeve 1101 extending from the first slot 1001 into the second slot 1002. The sleeve 1101 and the fixing part 802 have an assembly structure relationship, and the length of the sleeve 1101 is less than the length of the second slot 1002. The assembly structure includes: a fixing protrusion 1102 on the inner wall of the sleeve 1101, the fixing protrusion 1102 having an arc-shaped convex surface 1103, the arc-shaped convex surface 1103 being opposite to the entry direction of the short-circuit plug 104 when it is placed in the receiving cavity 901; an arc-shaped fixing groove 805 on the fixing part 802, the curvature of the arc-shaped fixing groove 805 near the end of the short-circuit plug 801 being less than the curvature near the operating part; and a cut 1104 on the inner wall of the sleeve 1101 extending from the second slot 1002 toward the first slot 1001, the depth of the cut 1104 being less than the length of the sleeve 1101, the number of cuts 1104 being one or more, and the cuts 1104 being spaced apart. When the short-circuit plug 104 is placed in or removed from the receiving cavity 901, the cut 1104 on the inner wall of the sleeve 1101 undergoes slight deformation due to its elasticity, providing convenient space for the insertion or removal of the short-circuit plug 104. When the short-circuit plug 104 is fully inserted into the receiving cavity 901, the arc-shaped convex surface 1103 of the fixing protrusion 1102 on the inner wall of the sleeve 1101 slides into the arc-shaped fixing groove 805 on the fixing part 802. The fixing protrusion 1102 and the arc-shaped fixing groove 805 are precisely engaged, the cut 1104 recovers its deformation, and the short-circuit plug 104 and the receiving cavity 901 are firmly connected. When the short-circuit plug 104 is removed from the receiving cavity 901, because the curvature of the arc-shaped fixing groove 805 near the end of the short-circuit plug 801 is less than the curvature of the other end, the inner wall of the sleeve can undergo slight deformation. Therefore, the arc-shaped convex surface 1103 of the fixing protrusion 1102 can smoothly slide out from the arc-shaped fixing groove 805. After the short-circuit plug 104 is completely removed from the receiving cavity 901, the state of the cut 1104 is restored.

[0069] In practical implementation, the short-circuit plug 104 and the receiving cavity 901 can also be housed using a threaded method. The fixing part 802 of the short-circuit plug 104 and the inside of the receiving cavity 901 have mutually matching threaded structures.

[0070] In the embodiments of this application, such as Figure 12As shown, the outer surface of the bottom of the second housing 103 is provided with a mounting structure 1201 for mounting the charging component 101 to the mounting surface. The mounting structure includes: a mounting channel 1202 and a limiting plate 1203 located at the edge of the mounting channel; the length direction of the mounting channel 1202 is the same as the width direction of the charging component 101, and it is located in the middle region of the second housing 103; the limiting plate 1203 is located on both sides of the mounting channel 1202 and extends towards the center of the mounting channel 1202, forming a rail groove 1204 between it and the mounting channel 1202; the two sides of the mounting rail provided on the mounting surface can slide into the rail groove 1204, and after the charging component 101 is installed on the mounting rail, the side of the charging component 101 facing the mounting surface and the side of the mounting rail near the mounting surface are on the same plane. In specific implementation, as shown... Figure 13 As shown, the mounting track 1301 has track retaining edges 1302 on both sides along its length that can slide into the track groove 1204. The thickness of the track retaining edges 1302 is less than or equal to the height of the track groove 1204. A limiting groove 1303 is provided between the track retaining edges 1302 on both sides of the mounting track 1301. The height of the limiting groove 1303 is equal to the distance between the mounting groove 1202 and the side of the charging component 101 facing the mounting surface. The height of the limiting groove 1303 is greater than the thickness of the track retaining edges 1302. The width of the limiting groove 1303 is equal to the distance between the limiting plates 1203 on both sides of the mounting groove 1202. The limiting groove 1303 has multiple mounting holes 1304, which are spaced a certain distance apart. When the track retainer 1302 slides into the track groove 1204 between the limiting plate 1203 and the mounting channel 1202, the limiting groove 1303 and the limiting plate 1203 flexibly engage, and the charging component 101 and the mounting track 1301 are perpendicular to each other. The charging component 101 can slide along the mounting track 1301. At the same time, the mounting hole 1304 on the limiting groove 1303 and the threaded hole on the mounting channel 1202 can be connected together by a threaded connector, so that the charging component 101 is fixed on the mounting track 1301. Then, the mounting track 1301 is installed on the mounting surface, which can be a flat surface of any material, such as a wall. In this way, the mounting track 1301 is fixed on the mounting surface, and the mounting track 1301 can fix multiple charging components 101. This placement method saves space occupied by the charging components without affecting their use.

[0071] In this embodiment, the charging component also includes a control switch to control the power level supplied from the power port to the charging port. The power level can be set to multiple different levels, such as 4.5 amps and 2 amps. The set power level can also be changed, for example, from 4.5 amps and 2 amps to 6 amps and 3 amps. Besides manually changing the power level supplied from the power port to the charging port via a control switch on the charging component, the power level can also be changed in the control application of a corresponding off-grid solar charging device installed on electronic equipment. Furthermore, an indicator light can be installed near the control switch. The indicator light uses different colors to represent different power levels; for example, a red light represents a large power level of 4.5 amps, and a green light represents a small power level of 2 amps. Alternatively, the red light could represent a small power level of 1 amp, and the green light could represent a large power level of 3 amps. In this embodiment, the rated capacity of the charging device's battery is divided into 6 amp-hours (6Ah) and 15 amp-hours (15Ah). Ampere-hour (Ah) is a unit of battery capacity, representing the product of the current and time that the battery can release under specific discharge conditions, i.e., capacity (Ah) = current (A) × time (h). For example, a 6Ah battery can theoretically work for 6 hours if discharged at 1A; if discharged at 6A, it will only work for 1 hour. Therefore, a larger rated capacity indicates more energy storage and a longer battery life. During battery charging, batteries with different rated capacities typically require matching charging currents. In this embodiment, a charging device with a 6Ah battery can be fully charged in 3 hours using a 2A current, and a charging device with a 15Ah battery can also be fully charged in approximately 3 hours using a 4.5A current. This design is a more optimized charging strategy determined by comprehensively considering factors such as battery life, improving the safety and efficiency of the charging process, and achieving a balance between charging efficiency and battery life.

[0072] In the embodiments of this application, such as Figure 14As shown, when multiple charging components 101 are connected in an active connection manner, they are connected in parallel electrical connection. In the system design of multiple charging components connected in parallel to a solar panel or public power grid, theoretically, a branch cable could be used to directly distribute one power source to three different lines connecting the charging components from the solar panel or public power grid. However, this method requires additional splicing processes and mold making, which would significantly increase material and processing costs. Therefore, in this embodiment, a more economical solution is adopted: a single cable is led out from the solar panel or public power grid, and the cable cost is controlled while meeting transmission efficiency by utilizing the relationship between cable internal resistance and current carrying capacity; the branching is then carried out after the line extends to the charging component area. At the same time, considering that too many charging components connected in parallel would cause a large voltage drop due to cable internal resistance, affecting charging efficiency, the optimal number of charging components connected in parallel is determined to be 2-5. This configuration achieves a balance between cost and efficiency while ensuring the system performance of the off-grid solar charging device. In this embodiment, the charging components can be connected in series. Alternatively, they can be directly connected to a solar panel or the public power grid without any electrical connection. In specific implementations, the charging component may also include a power control switch to control whether it is connected to a power source and whether it is energized. When a charging device is inserted into the charging slot of the charging component, the power control switch is in the open state, and the charging component is in a conductive state. When no charging device is inserted into the charging slot, the power control switch is in the closed state, and the charging component is in a de-energized state. Furthermore, the control switch of the charging component can also be designed to include the function of a power control switch. When the control switch is in a state that controls the power level supplied from the power port to the charging port, the charging component is in an energized state; when the control switch is in a state other than controlling the power level supplied from the power port to the charging port, the charging component is in a de-energized state.

[0073] Based on the preceding description of the charging pad structure, the following section will further elaborate on the significant advantages of the off-grid solar charging device in this application embodiment, which employs a series electrical connection method, through a comparison with existing charging devices:

[0074] Firstly, existing centralized charging devices generally adopt an internal parallel electrical connection architecture, where each charging device is connected to the system in parallel and outputs power through a standardized interface. Under this architecture, due to individual differences in charging devices (such as battery capacity, charging protocols, and cell aging), each charging device needs to integrate an independent charging module composed of capacitors, inductors, and power chips to monitor the charging device status in real time and dynamically adjust charging parameters (such as voltage, current, and charging stage) to adapt to the charging needs of different specifications of charging devices. However, this design leads to three major technical bottlenecks for terminal devices: First, high hardware complexity, with module costs accounting for a high proportion of the device's material costs, significantly increasing R&D and production costs; second, insufficient reliability, with high-density circuit integration increasing the charging device failure rate to 0.5%-1% (based on industry statistics), correspondingly increasing maintenance costs; and third, poor resource reusability, as charging modules are bound to each device, making it impossible to reduce marginal costs through large-scale reuse. In large-scale scenarios, the total cost of the charging module increases linearly with the number of devices.

[0075] The off-grid solar charging device provided in this application reconstructs the charging architecture through centralized module integration technology: charging modules are centrally deployed inside the charging component, and the charging port outputs a fixed power (e.g., 5V / 3A, 9V / 2A) according to preset rules. The charging device only needs to retain the battery body and basic protection circuit. After connecting to the charging component through a standardized interface, it directly calls the charging module within the component to complete the charging process. This solution achieves two core breakthroughs: First, the charging device does not need to have complex built-in modules, greatly simplifying the hardware design, shortening the R&D cycle, and significantly reducing manufacturing and maintenance costs; second, the modules within the charging component can cyclically serve multiple charging devices, resulting in high module reuse rate, and the module cost per device decreases exponentially as the scale of the device increases. This architecture effectively solves the problems of cost, reliability, and reuse efficiency in traditional parallel solutions through hardware decoupling and resource sharing, providing a more economical and engineering-valued technical path for off-grid solar charging scenarios.

[0076] Secondly, using parallel charging requires independent charging control for each charging device to ensure safe and optimal charging operation. Therefore, existing charging devices necessitate a separate charging management circuit for each device, increasing the complexity and cost of the charging module. Furthermore, coordination and communication between multiple charging management circuits are required to prevent mutual interference, further complicating charging management. In contrast, the off-grid solar charging device using a series connection in this embodiment allows for unified charging control and management. Since all charging units use the same current, a single overall charging control module in the charging circuit is sufficient to synchronously charge all connected devices. This eliminates the need for a complex charging control circuit for each device, reducing the cost and complexity of the charging equipment and simplifying charging management.

[0077] Furthermore, in existing charging devices, when multiple charging devices are connected in parallel, the total current is relatively large. According to Joule's law (Q = I²Rt) (where Q is heat, I is current, R is resistance, and t is time), with a constant charging line resistance, an increase in current will increase the heat generated on the line, leading to increased line losses. This not only reduces charging efficiency but may also cause severe overheating of the line, posing a safety hazard. Moreover, controlling line losses requires the use of large-diameter wires, increasing hardware costs. For example, taking a 100-watt charging device as an example, if a parallel charging mode is used, and each charging port outputs 5 volts and 1 amp, 20 charging ports need to be powered simultaneously, and the bus needs to carry 20 amps of current. However, if five charging ports are grouped together and connected in series, the 20 charging ports can be divided into four groups. According to the power formula (P = UI) (power equals voltage multiplied by current), under the premise of constant total power, the voltage of each group of charging ports increases to 25 volts, and the current decreases to 5 amps. This "boosting and reducing current" configuration effectively reduces the current intensity in the transmission line. According to the power formula (P = I²R, power loss equals the square of the current multiplied by the resistance), the reduced current causes a quadratic decrease in heat loss due to line resistance, thus significantly improving power transmission efficiency and reducing the heat generated by the line. Therefore, the off-grid solar charging device provided in this application uses a series electrical connection, which effectively reduces the current intensity in the circuit, improves transmission efficiency, and reduces the heat generated by the charging components. Furthermore, because the heat generated by the line is low, the off-grid solar charging device provided in this application does not require a heat dissipation device, further reducing the cost of the off-grid solar device. In addition, since the current carrying capacity of the wire is closely related to its diameter, when using series charging to reduce the current, a finer diameter wire can be selected while maintaining the same loss level. For example, the original parallel charging mode required a No. 13 large diameter wire, while with series charging, only a No. 26 small diameter wire is needed under the same loss requirements. Taking a 7-meter long wire as an example, the reduction in wire diameter can reduce the wire cost by approximately 100 yuan. Therefore, the off-grid solar charging device provided in this application adopts a series electrical connection method. By reducing the current intensity, it can reduce line loss and select thinner and lower-cost wires, thereby effectively controlling the overall cost, which is more suitable for remote and underdeveloped areas.

[0078] Finally, existing charging devices employ parallel electrical connections, resulting in lower output voltages. This necessitates a significant voltage reduction during the DC-DC conversion process, such as stepping down from 220V AC to 5V. Due to inherent losses in power electronic devices during DC-DC conversion, the voltage drop is positively correlated with energy loss. For instance, when the input voltage is 30V, the energy utilization rate when converting to 24V is generally over 94%, while the utilization rate when converting to 5V is generally around 85%. Therefore, existing charging devices inevitably generate high conversion losses during DC-DC conversion. Furthermore, most charging equipment using existing devices requires a secondary DC-DC conversion for voltage adaptation, such as the common multi-stage step-down conversion of "220V AC → 5V adapter → 3.2V charging equipment," further exacerbating energy loss. This dual conversion mechanism not only reduces energy utilization but also increases circuit complexity and system cost, creating a high-cost, low-efficiency technical bottleneck. The off-grid solar charging device provided in this application embodiment can use electricity converted from solar energy or electricity from the public power grid. A typical single crystalline silicon solar photovoltaic panel, under standard test conditions (irradiance 1000W / ㎡, battery temperature 25℃, air quality AM1.5), typically has an open-circuit voltage between 20-40V. The public power grid includes various voltage levels, with the low-voltage distribution network for residential users typically having a phase voltage of 220V. Because the charging components of the off-grid solar charging device provided in this application embodiment use a series electrical connection, the voltage is gradually superimposed to maintain the final output voltage in the 18-20V range. Therefore, the off-grid solar charging device provided in this application embodiment only requires one DC-DC conversion to reduce the voltage from 20-40V to 18-20V or 220V to 18-20V. Compared to the multi-stage voltage reduction conversion common in existing charging devices ("220V mains power → 5V adapter → 3.2V charging equipment"), the off-grid solar charging device provided in this application embodiment significantly reduces voltage drop and conversion stages, thereby reducing cumulative losses.

[0079] Therefore, the off-grid solar charging device provided in this application reconstructs the charging architecture through centralized module integration technology, reducing the manufacturing and maintenance costs of the charging equipment from the source. This technology significantly reduces the marginal cost of the off-grid solar charging device through the standardized reuse design of modules within the charging components, forming a cost advantage for large-scale applications. At the charging technology level, the device adopts series charging technology, breaking through the technical bottlenecks of traditional parallel charging methods through a dual strategy of voltage superposition and current optimization: on the one hand, it reduces current load and line losses through the principle of voltage superposition; on the other hand, it optimizes the voltage drop during the DC-DC conversion process, improving energy conversion efficiency. Compared with traditional solutions, this technical approach achieves a triple breakthrough of reduced line losses, lower equipment costs, and improved charging efficiency, significantly improving the economic efficiency and energy performance of the off-grid solar charging system.

[0080] The above is a detailed description of an embodiment of an off-grid solar charging device provided in this application. Corresponding to the aforementioned embodiment of an off-grid solar charging device, this application also discloses an embodiment of an off-grid solar charging system. Please refer to [link / reference]. Figure 15 Since the device embodiments are basically similar to the device embodiments, the description is relatively simple, and relevant parts can be referred to in the description of the device embodiments. The system embodiments described below are merely illustrative.

[0081] This application provides an off-grid solar charging system, including: the aforementioned off-grid solar charging device 1501, charging equipment 1502, and solar power supply device 1503; the solar power supply device 1503 is interconnected with the off-grid solar charging device 1501, the solar power supply device 1503 converts solar energy into electrical energy through a solar panel, and provides power to the power port in the off-grid solar charging device 1501 through the power output terminal of the solar power supply device 1503; the off-grid solar charging device 1501 obtains the power provided by the solar power supply device 1503 through the power port, and charges the charging equipment 1502 through the charging port in the off-grid solar charging device 1501, wherein a short-circuit plug is installed on the charging port in the idle state; the charging equipment 1502 is inserted into the charging slot of the off-grid solar charging device 1501, and obtains the power provided by the off-grid solar charging device 1501 through the charging port 1502 in the charging slot.

[0082] The above is a detailed description of an embodiment of an off-grid solar charging device provided in this application. Corresponding to the aforementioned embodiment of an off-grid solar charging device, this application also discloses an embodiment of an off-grid solar charging method. Please refer to [link / reference]. Figure 16Since the method embodiments are basically similar to the device embodiments, they are described in a relatively simple manner. For relevant details, please refer to the descriptions of the method embodiments. The method embodiments described below are merely illustrative.

[0083] This application provides an off-grid solar charging method, including steps S1601 to S1604.

[0084] Step S1601: Connect the charging device to the charging slot of the off-grid solar charging device.

[0085] Step S1602: The power output terminal of the solar power supply device provides power to the power port in the off-grid solar charging device.

[0086] Step S1603: Electricity is supplied to the charging equipment via a series connection between the charging ports in the off-grid solar charging device.

[0087] Step S1604: Install the short-circuit plug of the above-mentioned off-grid solar charging device onto the charging port of the charging slot that is in an idle state.

[0088] It should be noted that the terms "first," "second," "third," etc., in the claims, specification, and drawings of this application are used to distinguish similar objects and are not used to describe a specific order or sequence. Such data are interchangeable where appropriate so that the embodiments of this application described herein can be implemented in a sequence other than that shown or described herein. Furthermore, the terms "comprising," "having," and their variations are intended to cover non-exclusive inclusion; for example, a process, method, system, product, or apparatus that includes a series of steps or units is not necessarily limited to those steps or units explicitly listed, but may include other steps or units not explicitly listed or inherent to these processes, methods, products, or apparatuses.

[0089] Although the various components of the components or apparatus in this application and the mounting arrangements between them are described in a specific order in the accompanying drawings, this does not require or imply that the components or apparatus must be designed according to that specific component or mounting arrangement, or that all the components shown must be included to achieve the desired result. Additional or alternative components may be omitted, multiple components may be combined into one component to achieve the corresponding function, and / or a component may be decomposed into multiple components to achieve the corresponding function, etc.

[0090] The above description is merely a specific embodiment of this application, but the scope of protection of this application is not limited thereto. Any modifications, equivalent substitutions, and improvements made by those skilled in the art within the scope of the technology disclosed in this application, and within the spirit and principles of this application, should be included within the scope of protection of this application.

Claims

1. An off-grid solar charging device, characterized in that, include: One or more charging components; When there are multiple charging components, the charging components are connected in an active connection manner; The charging assembly includes: a first housing, a second housing, a short-circuit plug, and a power port; the first housing and the second housing are fitted together; a circuit board is disposed between the first housing and the second housing and is enclosed within the first housing and the second housing; the first housing has multiple charging slots, each containing a charging port; a charging device is inserted into the charging slot and charged through the charging port; the charging ports are connected in series to charge the charging device; when the short-circuit plug is inserted into any one or more of the charging ports, the charging port is short-circuited; the un-short-circuited charging ports are in normal working condition, and the charging device currently in charging condition is in normal charging condition; the power port provides the circuit board with power to convert solar energy into electrical energy, or provides power from the public power grid.

2. The off-grid solar charging device according to claim 1, characterized in that, The charging components are connected by a movable connection, including: sliders and slide rails are provided on both sides of the charging component along its length; when the charging component includes at least two, the slider provided on the first charging component can be embedded into the slide rail of the second charging component, so that the first charging component and the second charging component form a movable connected integral structure.

3. The off-grid solar charging device according to claim 2, characterized in that, The slider includes a groove on the charging assembly and a protrusion within the groove; the groove has a first opening on its longitudinal end for mounting the slider to mate with the slide rail; the protrusion includes a first protrusion extending from the bottom of the groove toward the opening, and a second protrusion on the first protrusion, the first protrusion having a physical spatial distance from both sides of the groove; the two ends of the second protrusion extend toward the width direction of the opening and have a physical spatial distance from the groove; the height of the protrusion is equal to, less than, or greater than the depth of the groove.

4. The off-grid solar charging device according to claim 3, characterized in that, The slide rail includes: a slide groove located on the charging assembly, and slide arms extending into the slide groove on both sides of the slide groove; the slide groove has a second opening at one end in the length direction to guide the protrusion into the slide groove, and the slide groove has a depth and width matching the protrusion; the slide arms have elastic deformation capable of covering both ends of the second protrusion during and after the protrusion is inserted into the slide groove.

5. The off-grid solar charging device according to claim 4, characterized in that, The groove has a second opening on its end side in the longitudinal direction to guide the protrusion into the groove, including: The groove has a second opening at one end in the longitudinal direction to guide the protrusion into the groove, and a closed structure at the other end to restrict the protrusion from sliding out of the groove. The second opening is the inlet and outlet of the protrusion. or, The groove has a first opening on its longitudinal end side for mounting the slider and the slide rail, including: The groove has a first opening at one end along its length for mounting the slider and the slide rail, and a closed structure at the other end to restrict the protrusion from sliding out of the groove.

6. The off-grid solar charging device according to claim 4, characterized in that, The length direction of the groove is the same as the height direction of the charging component, and the end face of the groove in the length direction is located in the same plane as the end face of the charging component in the height direction. Correspondingly, the length direction of the slide is the same as the height direction of the charging component, and the end face of the slide in the length direction is located in the same plane as the end face of the charging component in the height direction. or, The length direction of the groove is the same as the length direction of the charging component, and the corresponding end faces of the groove and the charging component in the length direction are located on the same plane. Correspondingly, the length direction of the slide is the same as the length direction of the charging component, and the corresponding end faces of the slide and the charging component in the length direction are located on the same plane.

7. The off-grid solar charging device according to claim 6, characterized in that, When the length direction of the groove is the same as the height direction of the charging component, and the end face of the groove in the length direction is on the same plane as the end face of the charging component in the height direction, correspondingly, when the length direction of the slide is the same as the height direction of the charging component, and the end face of the slide in the length direction is on the same plane as the end face of the charging component in the height direction, the slider and the slide rail are respectively disposed in the side area between the charging groove. When the length direction of the groove is the same as the length direction of the charging component, and the corresponding end faces of the groove and the charging component are located on the same plane in the length direction, and correspondingly, the length direction of the slide groove is the same as the length direction of the charging component, and the corresponding end faces of the slide groove and the charging component are located on the same plane in the length direction, the slider and the slide rail are respectively arranged on both sides of the length direction of the charging component.

8. The off-grid solar charging device according to claim 1, characterized in that, The charging slot is a semi-enclosed or fully enclosed space, and the height of the charging slot from bottom to top meets the requirements for fixing the charging device when it is inserted into the charging slot. When the charging slot is a semi-enclosed accommodating space, a limiting prism is provided at the opening of the charging slot in the opening direction to restrict the charging device from being inside the charging slot in the charging state and to maintaining a plug-in state with the charging port.

9. The off-grid solar charging device according to claim 1, characterized in that, The short-circuit plug includes a short-circuit insertion part, a fixing part, and an operating part. The short-circuit insertion part has a short-circuit pin that engages with the charging port of the charging slot to short-circuit the charging port. The fixing part is connected to the short-circuit insertion part, and through an assembly structure with the receiving cavity of the charging assembly, the fixing part allows the short-circuit plug to be placed in the receiving cavity or detached from the receiving cavity. The operating part is connected to the fixing part, controlling the short-circuit insertion part and the fixing part to be placed in the receiving cavity or detached from the receiving cavity.

10. The off-grid solar charging device according to claim 9, characterized in that, The receiving cavity is disposed on the side along the length of the charging component; the number of the receiving cavities matches the number of the short-circuit plugs; the number of the short-circuit plugs is less than the number of charging ports of a single charging component, and the number of the short-circuit plugs remains unchanged when there are multiple charging components.

11. The off-grid solar charging device according to claim 10, characterized in that, The receiving cavity includes: a first slot located on the side of the charging component along its length, a second slot located at the bottom of the charging component, and the first slot having a first preset distance from the bottom edge of the charging component, and the second slot having a second preset distance from the opposite side of the first slot; when the short-circuit plug and the fixing part are cylindrical, the first slot has a shape that matches the short-circuit plug and the fixing part, and the second slot has a shape that is the same as or different from the first slot.

12. The off-grid solar charging device according to claim 11, characterized in that, The receiving cavity further includes: A sleeve extending from the first slot into the second slot, the sleeve having the assembly structure relationship with the fixing part, the length of the sleeve being less than the length of the second slot.

13. The off-grid solar charging device according to claim 12, characterized in that, The assembly structure relationships include: A fixing protrusion is provided on the inner wall of the sleeve, the fixing protrusion having an arc-shaped convex surface, the arc-shaped convex surface being opposite to the entry direction when the short-circuit plug is placed in the receiving cavity; an arc-shaped fixing groove is provided on the fixing part, the curvature of the arc-shaped fixing groove near the end of the short-circuit plug is less than the curvature near the end of the operating part; and a cut is provided on the inner wall of the sleeve extending from the second slot towards the first slot, the depth of the cut being less than the length of the sleeve.

14. The off-grid solar charging device according to claim 1, characterized in that, When the plurality of charging components are connected in an active connection manner, the charging components are connected in a parallel electrical connection manner.

15. The off-grid solar charging device according to claim 1, characterized in that, The outer surface of the bottom of the second housing is provided with a mounting structure for mounting the charging component on the mounting surface. The mounting structure includes a mounting channel and a limiting plate located at the edge of the mounting channel. The length direction of the mounting channel is the same as the width direction of the charging component, and it is located in the middle area of ​​the second housing; the limiting plate is located on both sides of the mounting channel and extends towards the center of the mounting channel, forming a rail groove with the mounting channel; the two sides of the mounting rail provided on the mounting surface can slide into the rail groove, and after the charging component is installed on the mounting rail, the side of the charging component facing the mounting surface and the side of the mounting rail near the mounting surface are on the same plane.

16. The off-grid solar charging device according to claim 1, characterized in that, The charging assembly also includes a control switch for controlling the power level supplied by the power port to the charging port.

17. An off-grid solar charging system, characterized in that, include: The off-grid solar charging device, charging equipment, and solar power supply device as described in any one of claims 1 to 16 above; The solar power supply device is interconnected with the off-grid solar charging device. The solar power supply device converts solar energy into electrical energy through solar panels and provides power to the power port of the off-grid solar charging device through the power output terminal of the solar power supply device. The off-grid solar charging device obtains power from the solar power supply device through the power port, and charges the charging device through the charging port in the off-grid solar charging device. A short-circuit plug is installed on the charging port when it is idle. The charging device is plugged into the charging slot of the off-grid solar charging device and obtains the power provided by the off-grid solar charging device through the charging port in the charging slot.

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