Portable BC battery type solar charging device

Abstract

The embodiment of the utility model provides a portable BC battery type solar charging device. The portable BC battery type solar charging device comprises at least one BC solar cell panel, a cloth layer and a junction box, all BC solar cell panels are arranged on the front face of the cloth layer, the edges of the BC solar cell panels are embedded into the cloth layer, and the BC solar cell panels and the cloth layer are fixedly connected in an integrated hot-pressing mode. All the BC solar cell panels are electrically connected in series and then electrically connected with the junction box.

Description

Technical Field

[0001] This utility model relates to the field of photovoltaic applications, and in particular to a portable BC battery-based solar charging device. Background Technology

[0002] A solar folding charging panel is an environmentally friendly charging device that uses solar energy to charge the 12V lead-acid batteries inside electric vehicles, cars, trucks, RVs, and yachts. It primarily converts solar energy into electrical energy, which is then connected to the 12V lead-acid battery via external leads extending from the solar folding panel. This compensates for energy loss in the 12V lead-acid battery, preventing it from being completely depleted due to its self-discharge characteristics, thus extending the battery's lifespan. Currently, most solar folding charging panels on the market are single-sided solar folding panels with aluminum frames and glass enclosures.

[0003] In the process of developing this utility model, the applicant discovered at least the following problems in the prior art:

[0004] Traditional solar folding panels are encapsulated and connected using rigid materials such as aluminum frames and glass, making them inconvenient to carry, with poor waterproof performance and low photoelectric conversion efficiency. Utility Model Content

[0005] This utility model provides a portable BC battery-based solar charging device to solve the problems of traditional solar folding panels, which are inconvenient to carry, have poor waterproof performance, and low photoelectric conversion efficiency due to their use of rigid materials such as aluminum frames and glass for encapsulation and connection.

[0006] To achieve the above objectives, one embodiment of this utility model provides a portable BC battery-based solar charging device, comprising: at least one BC solar panel, a fabric layer, and a junction box;

[0007] All BC solar panels are positioned on the front of the fabric layer, with the edges of the BC solar panels embedded inside the fabric layer. The BC solar panels and the fabric layer are integrally heat-pressed and fixedly connected.

[0008] All BC solar panels are connected in series and then electrically connected to the junction box.

[0009] Furthermore, the BC solar panel includes: a PET layer, an EVA layer, BC cells, and a substrate layer.

[0010] Furthermore, the BC solar panel includes: a PET layer, an ETFE layer, an EVA layer, BC solar cells, and a substrate layer.

[0011] Furthermore, the ETFE layer has a honeycomb structure formed by laminating Teflon mesh.

[0012] Furthermore, the BC solar panels are rectangles of the same size, and all BC solar panels are distributed in a matrix on the front side of the fabric layer, with a gap between adjacent BC solar panels; the BC solar panels are electrically connected in series through copper braided tape laminated inside the fabric layer.

[0013] Furthermore, multiple loops are provided around the perimeter of the fabric layer.

[0014] Furthermore, a support plate is provided on the back of the fabric layer in the area where each BC solar panel is located, and one end of the support plate is rotatably hinged to the fabric layer.

[0015] Furthermore, a hook-and-loop fastener is provided in the middle of the back side of the fabric layer;

[0016] The right side of the fabric layer is reserved for a cover that is not covered by the BC solar panel. The front of the cover is provided with a second Velcro with a rough or hook side that is attached to the first Velcro.

[0017] A handle is provided in the middle of the back side of the fabric layer; the handle is made of silicone.

[0018] Furthermore, a storage bag is provided on the back of the fabric layer; the storage bag contains the junction box and the lead wire; the lead wire is sealed to the junction box; a waterproof rubber ring is provided on the inner wall of the junction box; the junction box is provided with multiple types of USB waterproof converter interfaces.

[0019] Furthermore, the fabric layer is waterproof nylon fabric.

[0020] The above technical solution has the following beneficial effects: by encapsulating the laminated components with fabric sewn on, the components are more robust and the cells are less likely to move or be damaged, thus improving the original defects of the weak solar cell. The use of the latest high-efficiency BC solar cell provides high-efficiency photovoltaic conversion and improves the original defects of low power generation efficiency of crystalline silicon cells. Attached Figure Description

[0021] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0022] Figure 1This is a front view of a portable BC battery-powered solar charging device in its unfolded state, one of the embodiments of this utility model.

[0023] Figure 2 This is a schematic diagram of the back of a portable BC battery-based solar charging device in its unfolded state, one of the embodiments of this utility model.

[0024] Figure 3 This is a front view of a portable BC battery-powered solar charging device in a folded state, one of the embodiments of this utility model;

[0025] Figure 4 This is a schematic diagram of the back of a portable BC battery-powered solar charging device in a folded state, one of the embodiments of this utility model;

[0026] Figure 5 This is a schematic diagram of a BC solar panel according to one embodiment of the present invention;

[0027] Figure 6 This is a schematic diagram of another structure of the BC solar panel, one of the embodiments of this utility model;

[0028] Figure 7 This is a side view of a portable BC battery-based solar charging device in a supported state, one of the embodiments of this utility model.

[0029] The reference numerals in the attached diagram are as follows: 1. BC solar panel; 11. PET layer; 12. EVA layer; 13. BC cell; 14. Substrate layer; 15. ETFE layer; 2. Fabric layer; 3. Junction box; 4. Lead wire; 21. Hanging ear; 22. Support plate; 23. First Velcro; 24. Cover fabric; 25. Second Velcro; 26. Handle; 27. Storage bag. Detailed Implementation

[0030] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0031] With the development of new energy technologies, single-sided folding solar panels with aluminum-framed glass encapsulation are increasingly widely used in vehicles equipped with 12V lead-acid batteries. However, existing single-sided folding solar panels with aluminum-framed glass encapsulation mainly consist of aluminum-framed glass laminates, which have certain defects in use. The solar cells in existing solar charging devices are prone to shifting, resulting in an unstable overall structure. Single-sided folding solar panels can only be charged from one side, leading to poor charging efficiency. The glass-encapsulated solar panels are easily broken and damaged, making them inconvenient to carry. The aluminum-framed frame is easily scratched, has a rigid appearance, and is bulky. The inability to freely switch angles during charging affects user experience. Furthermore, the lead wires of aluminum-framed glass-encapsulated folding solar panels are connected and led out from the junction box on the back of the module, making them susceptible to water ingress or short circuits, posing safety risks. Currently, the shapes and appearances of solar folding charging devices on the market are relatively limited, failing to meet the stringent requirements of customers. Therefore, improvements have been made to solar folding charging panels, resulting in the invention of a portable BC battery-based solar charging pack.

[0032] The portable BC (Back Contact) battery-powered solar charging bag is one such example. This device uses BC solar panels to absorb solar energy and convert it into electricity to power electrical appliances. Specifically, in bright sunlight, the BC solar panels generate current and voltage, which is then used to directly charge compatible electronic devices through the product's output port, making it convenient to carry. It employs a BC cell design, with both sides of the BC cells laminated with transparent PET, resulting in higher and more powerful efficiency compared to traditional single-sided power generation. This portable BC battery-powered solar charging bag is an innovative product combining solar charging and portable power functionality. It utilizes solar photovoltaic panels to convert sunlight into electricity, which is stored in a built-in lithium battery, providing a renewable energy charging solution. The design is inspired by the need for portability, energy efficiency, and environmental friendliness in outdoor sports, camping, and travel, offering a convenient way to charge outdoors or in emergencies. This product is lightweight, noiseless, clean, easy to fold, and portable. It uses 182BC solar cells with an unobstructed front panel, increasing the light-receiving area, improving incident light utilization, resulting in higher conversion efficiency and a more aesthetically pleasing appearance. It is also portable and environmentally friendly; its foldable design and lightweight materials make it easy to carry and store, suitable for outdoor activities, travel, and emergency power needs. It can also charge various devices, including MP3 players, MP4 players, PDAs, digital cameras, and mobile phones. The solar-powered folding bag is small, high-capacity, and has a long lifespan. It is suitable for business trips, tourism, long-distance travel by car or boat, fieldwork, and as a backup power source for students. It features safety protection, good compatibility, large capacity, small size, and long lifespan. Furthermore, using solar energy as the energy source avoids the consumption of traditional electrical resources, reduces environmental impact, and aligns with sustainable development principles. It is widely used in business trips, tourism, long-distance travel by car or boat, fieldwork, and as a backup power source for students in emergency situations.

[0033] On the one hand, such as Figure 1 and Figure 2 As shown, this utility model embodiment provides a portable BC battery-based solar charging device, including: at least one BC solar panel 1, a fabric layer 2, and a junction box 3;

[0034] All BC solar panels 1 are disposed on the front side of the fabric layer 2, and the edges of the BC solar panels 1 are embedded inside the fabric layer 2. The BC solar panels 1 and the fabric layer 2 are integrally heat-pressed and fixedly connected.

[0035] All BC solar panels 1 are connected in series and then electrically connected to junction box 3.

[0036] In some embodiments, BC solar panels absorb solar energy and convert it into electrical energy to power electrical appliances. When sunlight is abundant, the BC solar panels generate current and voltage under sunlight, which can be directly used to charge existing electronic products that meet the output voltage and current requirements through the product's output leads. This makes them convenient to carry, install, and use, suitable for emergency power needs of mobile phones, power banks, portable computers, electric mobility scooters, cars, etc. No internal combustion engine is needed for energy conversion, reducing the consumption of scarce energy resources. The latest high-efficiency BC solar panels, with a photoelectric conversion efficiency greater than 23%, provide efficient photovoltaic conversion, overcoming the shortcomings of the low power generation efficiency of traditional crystalline silicon solar cells. Through a lamination process where multiple BC solar panels 1 are connected in series and pressed together with a fabric layer 2, a glass-free encapsulation technology is achieved, replacing rigid and bulky glass. The weight is reduced by 50% compared to aluminum frame components, and the solar panels are more robust, less prone to scratches and damage, lighter in size, and easier to carry. Both sides of the BC solar panels 1 are fixed, making the cells more stable and preventing displacement, thus improving the product's durability.

[0037] Furthermore, such as Figure 5 As shown, the BC solar panel 1 includes: a PET layer 11, an EVA layer 12, BC solar cells 13, and a substrate layer 14.

[0038] In some embodiments, the BC solar panel comprises materials such as PET, EVA, BC cells, and a substrate frame. The cells are laminated into an ultra-light and ultra-thin panel through steps such as series connection of cells and material stacking. The finished product is then laser-cut into the required shape. After the product cools, the corresponding external leads are welded and fixed through a junction box, and the bracket is installed. The power parameters are then tested through the leads from the junction box. The portable BC battery-powered solar charging device employs an integrated hot-pressing process using materials such as PET, EVA, BC solar cells, substrate frame, and fabric. It utilizes a high-strength double-layer PET lamination to protect the BC solar cells. The encapsulation, combining lamination with fabric stitching, makes the component more robust, preventing cell movement and damage, thus overcoming the shortcomings of traditional solar panels where cells were not secure. Compared to existing solar power products, the portable BC battery-powered solar charging device uses the latest high-efficiency BC solar cells with a photoelectric conversion efficiency greater than 23%, providing highly efficient photovoltaic conversion and overcoming the lower power generation efficiency of traditional crystalline silicon solar cells. The use of a high-transmittance EVA transparent protective film increases the light transmittance of the solar module, thereby improving its power generation efficiency and resolving the low power conversion efficiency of traditional solar panels.

[0039] Furthermore, such as Figure 6As shown, the BC solar panel 1 includes: a PET layer 11, an ETFE layer 15, an EVA layer 12, BC solar cells 13, and a substrate layer 14.

[0040] In some embodiments, the BC solar panel comprises materials such as PET, ETFE, EVA, BC cells, and a substrate frame. It is manufactured by laminating cells in series and stacking materials to form an ultra-light and ultra-thin panel. The finished product is then laser-cut into the desired shape. After cooling, the corresponding external leads are welded and fixed using a junction box, and the bracket is installed. Power parameters are then tested using leads from the junction box. The portable BC battery-powered solar charging device employs an integrated hot-pressing process using PET, ETFE, EVA, BC cells, a substrate frame, and fabric. It uses a high-strength double-layer PET lamination to protect the BC cells. The encapsulation, combining the laminated components with fabric stitching, makes the component more robust, preventing cell movement and damage, thus overcoming the shortcomings of traditional solar panels where cells are not robust. The portable BC battery-powered solar charging device uses the latest high-efficiency BC solar cells with a photoelectric conversion efficiency greater than 23%, providing efficient photovoltaic conversion and overcoming the lower power generation efficiency of traditional crystalline silicon cells. The use of high-transmittance transparent protective films made of ETFE and EVA improves the light transmittance of solar modules, thereby increasing their power generation efficiency and overcoming the low conversion efficiency of traditional solar panels. A combination of high-strength ETFE and a fabric layer (preferably a black nylon fabric layer) protects the solar cells. Through a special lamination process, a glass-free encapsulation technology replaces rigid and bulky glass, reducing weight by 50% compared to aluminum frame modules. The solar panels are also more robust, less prone to scratches and damage, and lighter, making them easier to carry. Using PET with a high-quality fabric layer to fix the solar cells ensures that both sides of the solar substrate are securely fixed, making the cells more stable and preventing shifting, thus improving product durability.

[0041] Furthermore, the ETFE layer 15 has a honeycomb structure formed by laminating Teflon mesh fabric.

[0042] In some embodiments, by laminating ETFE film onto Teflon mesh fabric, a honeycomb pattern is formed on the surface of the bifacial solar module, which improves upon the shortcomings of the original flat solar modules, which have a relatively simple and rigid appearance and limited selection.

[0043] Furthermore, such as Figure 1 , Figure 3 and Figure 4As shown, the BC solar panels 1 are rectangles of the same size, and all BC solar panels 1 are distributed in a matrix on the front side of the fabric layer 2, with a gap between adjacent BC solar panels 1; the BC solar panels 1 are electrically connected in series through copper braided strips laminated inside the fabric layer 2.

[0044] In some embodiments, the portable BC battery-type solar charging device uses a novel copper braided strap to ultra-lightweightly fold and laminate multiple (preferably 4) BC solar panels to form a four-fold BC solar charging panel, which can be unfolded for simultaneous charging, or... Figure 3 and Figure 4 The foldable design shown makes it convenient to use and enables efficient charging, meeting the charging needs of high-power mobile power banks. It overcomes the shortcomings of the original single solar panel, which had limited and low charging efficiency.

[0045] Furthermore, such as Figure 1 and Figure 2 As shown, multiple loops 21 are provided around the perimeter of the fabric layer 2.

[0046] In some embodiments, the portable BC battery-powered solar charging device can be conveniently hung up for use via the ear loops.

[0047] Furthermore, such as Figure 2 , Figure 4 and Figure 7 As shown, a support plate 22 is provided on the back of the fabric layer 2 in the area where each BC solar panel 1 is located, and one end of the support plate 22 is rotatably hinged to the fabric layer 2.

[0048] In some embodiments, by sewing a bracket and bracket strap on the outside of the fabric enclosure, multi-angle charging is possible, with a power output about 10% higher than that of ordinary charging boards. This improves upon the shortcomings of the original charging boards, which have a rigid appearance and cannot freely support angle switching during charging.

[0049] Furthermore, such as Figure 1 and Figure 2 As shown, a hook or loop first Velcro 23 is provided in the middle of the back side of the fabric layer 2.

[0050] The right side of the fabric layer 2 is reserved with a cover 24 that is not covered by the BC solar panel 1. The front of the cover 24 is provided with a second hook and loop fastener 25 with a rough or hook side that is attached to the first hook and loop fastener 23.

[0051] A handle 26 is provided in the middle of the back side of the fabric layer 2; the handle 26 is made of silicone.

[0052] In some embodiments, when the portable BC battery-type solar charging device is folded and stored, it can be stored by fastening a first Velcro strap and a second Velcro strap.

[0053] Furthermore, such as Figure 2 and Figure 4 As shown, a storage bag 27 is also provided on the back of the fabric layer 2; the storage bag 27 contains the junction box 3 and the lead wire 4; the lead wire 4 is sealed to the junction box 3; a waterproof rubber ring is provided on the inner wall of the junction box 3; the junction box 3 is provided with various types of USB waterproof converter interfaces.

[0054] In some embodiments, a process of directly sealing the wiring at the output port is adopted, and a waterproof rubber ring is added to the inner wall of the junction box in use, which improves the shortcomings of the original junction box that is not waterproof and is prone to weathering.

[0055] Furthermore, the fabric layer 2 is waterproof nylon fabric.

[0056] In some embodiments, waterproof nylon fabric is used for sewing and processing, with a frameless process, achieving a waterproof rating of IP65. It is resistant to high temperatures, sun protection, and rain protection, making it suitable for use in various outdoor environments. This improves upon the shortcomings of the original solar folding cloth bag products, such as the fabric not being waterproof and the solar cells being easily damaged by water. It also improves upon the shortcomings of the original aluminum profile encapsulation frame being easily scratched, having a relatively rigid appearance, and being relatively bulky.

[0057] The technical solutions of the present invention will be described in detail below with reference to specific application examples. For technical details not described in the implementation process, please refer to the relevant description above.

[0058] As shown in the figure, the portable BC battery-based solar charging pack of the present invention is composed of materials such as PET, ETFE, EVA, BC battery cells, and a substrate frame. It is made by laminating battery cells into an ultra-light and ultra-thin battery panel through steps such as connecting battery cells in series, stacking materials, and laminating Teflon and nylon fabric. The finished product is then laser-cut into the required shape. After the product cools, the corresponding external leads are welded and fixed by the junction box, the bracket is installed, and the power parameters are tested by leading out the wires through the junction box.

[0059] The portable BC battery-powered solar charging pack device, compared to conventional solar modules, is a device that absorbs solar energy through BC solar panels and converts it into electrical energy to power electrical appliances. Specifically, when there is sufficient sunlight, the BC solar panels generate current and voltage under the influence of sunlight, which directly charges existing electronic products that meet the output voltage and current requirements through the product's output leads. It is convenient to carry, install, and use, and is suitable for emergency power needs of mobile phones, power banks, portable computers, electric scooters, cars, etc. This portable BC battery-powered solar charging pack eliminates the need for an internal combustion engine for energy conversion, reducing the consumption of rare energy sources. Compared to conventional solar cell bags, this pack utilizes a one-piece hot-pressing process combining PET, ETFE, EVA, BC cells, a substrate frame, and fabric. It employs a high-strength double-layer PET lamination to protect the BC cells, and the fabric-stitched encapsulation makes the assembly more robust, preventing cell movement and damage, thus overcoming the previous shortcomings of flimsy solar cells. Compared to existing solar power products, this portable BC battery-powered solar charging pack uses the latest high-efficiency BC solar cells with a photoelectric conversion efficiency greater than 23%, providing highly efficient photovoltaic conversion and overcoming the lower power generation efficiency of traditional crystalline silicon cells. The use of a high-transmittance transparent protective film made of ETFE and EVA increases the light transmittance of the solar module, thereby improving its power generation efficiency and resolving the low conversion efficiency of traditional solar panels. The pack protects the solar cells using a combination of high-strength ETFE and black nylon fabric, and through a special lamination process, achieves glass-free encapsulation, replacing rigid and bulky glass. Weighing 50% less than aluminum frame components, this portable BC battery-powered solar charging bag features a more robust solar panel that is less prone to scratches and damage, and is lightweight and easy to carry. It uses PET and high-quality fabric to secure the solar cells, ensuring both sides of the solar substrate are firmly fixed, resulting in a more stable and durable product. The bag uses a new copper braided strap to connect four ultra-lightweight BC folding laminate panels, forming a four-fold BC solar charging panel. It can be unfolded for simultaneous charging or folded for easy storage, achieving efficient charging and meeting the charging needs of high-power power banks. This overcomes the limitations of traditional single-panel solar panels in terms of charging efficiency. It employs a multi-interface USB waterproof solar converter (including Type-A, Type-B, and Type-C interfaces, but not limited to these) for fast charging of multi-functional devices, providing simultaneous charging for various devices such as mobile phones, power banks, portable computers, etc., overcoming the limitation of traditional solar panels that can only charge a single device. The bag also features a built-in voltage regulator chip for safer charging and more reliable power consumption.This portable BC battery-powered solar charging bag features a new 3D silicone handle design, offering excellent grip and increased comfort for carrying and use, overcoming the shortcomings of the original plastic handle's rigid outer shell. It employs a direct wiring and sealing process at the output port, and adds a waterproof gasket to the inner wall of the junction box, addressing the previous issues of non-waterproofing and susceptibility to weathering. Made of waterproof nylon fabric with a frameless design, it achieves an IP65 waterproof rating, is heat-resistant, sun-proof, and rain-proof, suitable for various outdoor environments. This addresses the shortcomings of previous solar folding bags where the fabric was not waterproof, allowing water to enter and damage the solar cells, and the original aluminum profile encapsulation's easily scratched frame, rigid appearance, and bulkiness. Utilizing a new BC battery cell power generation design, with a bracket and support strap sewn onto the outside of the fabric encapsulation, it allows for multi-angle charging, achieving approximately 10% higher power output than ordinary charging panels. This product improves upon the shortcomings of traditional charging panels, such as their rigid appearance and inability to easily switch angles during charging. It employs a process involving built-in double-conductor copper foil tape connections, substrate lamination, and fabric sewing, using different colored fabrics for stitching. This overcomes the limitations of traditional aluminum-framed, glass-encapsulated solar folding panels, which had a limited and monotonous shape and limited design options. It boasts strong load-bearing capacity, supporting up to 65KG when folded, ensuring durability and reliability. The Teflon mesh fabric laminated with ETFE film creates a honeycomb-like surface on the double-sided power generation module, improving upon the limited and monotonous shape and design options of traditional smooth solar modules. It is widely applicable for emergency power needs in mobile phones, power banks, portable computers, electric vehicles, cars, etc., or for solar-powered houses, solar boats, solar RVs, solar tents, energy storage boxes, and other locations requiring power but where wiring is difficult. This portable BC battery-powered solar charging pack is designed for high-power applications, thus offering broad application prospects.

[0060] First, compared to conventional solar cell bags, this portable BC battery solar charging bag uses an integrated hot-pressing process with materials such as PET, ETFE, EVA, BC cells, substrate frame, and fabric. It uses high-strength double-layer PET lamination to protect the BC cells. The encapsulation of laminated components and sewn fabric makes the components more robust and the cells less prone to movement and damage, thus improving the shortcomings of the original solar panel cells that were not robust.

[0061] Secondly, compared to existing solar power generation products, this portable BC battery-powered solar charging pack uses the latest high-efficiency BC solar cells, with a photoelectric conversion efficiency of more than 23%, providing efficient photovoltaic conversion and improving the shortcomings of the low power generation efficiency of the original crystalline silicon solar cells.

[0062] Third, the use of ETFE and EVA high-transmittance transparent protective films improves the transmittance of solar modules, thereby increasing the power generation efficiency of solar modules and solving the defect of low power generation conversion efficiency of the original solar panels.

[0063] Fourth, the solar cells are protected by a combination of high-strength ETFE and black nylon fabric. Through a special lamination process, glass-free encapsulation technology is used to replace rigid and bulky glass. The weight is reduced by 50% compared to aluminum frame modules, and the solar panels are more robust, less prone to scratches and damage, lighter in size, and easier to carry.

[0064] Fifth, PET and high-quality fabric are used to fix the solar cells, so that both sides of the solar substrate are fixed, making the cells more stable and preventing them from shifting, thus improving the product's durability.

[0065] Sixth, this portable BC battery solar charging pack uses a new type of copper braided strap to connect four BC ultralight folding laminates to form a four-fold BC solar charging panel. It can be unfolded for simultaneous charging or folded for storage, making it convenient to use and achieving efficient charging. It can meet the charging needs of high-power mobile power supplies and improves the shortcomings of the original single solar panel, which has limited charging efficiency and low charging efficiency.

[0066] Seventh, a solar-powered multi-interface USB waterproof converter (including type-A, type-B, and type-C interfaces, but not limited to these interfaces) is used for fast charging of multi-functional electrical devices. It can provide charging power for multiple electrical devices at the same time and is compatible with electronic products such as mobile phones, power banks, portable computers, etc., which solves the defect of the original solar panels that can only charge a single device.

[0067] Eighth, this portable BC battery-powered solar charging pack has a built-in voltage regulator chip, ensuring safer charging and more reliable power use.

[0068] Ninth, this portable BC battery solar charging bag features a new 3D silicone handle design, which feels great and increases the comfort of carrying and using it, improving upon the shortcomings of the original plastic handle which had a relatively hard shell.

[0069] Tenth, a process of directly sealing the wiring at the output port is adopted, and a waterproof rubber ring is added to the inner wall of the junction box, which improves the shortcomings of the original junction box that is not waterproof and is prone to weathering.

[0070] Eleventh, it is made of waterproof nylon fabric with a frameless design, achieving an IP65 waterproof rating. It is resistant to high temperatures, sun, and rain, making it suitable for various outdoor environments. This design improves upon the shortcomings of the original solar folding bags, which had non-waterproof fabric and easily damaged solar cells. It also addresses the issues of the original aluminum profile frame being easily scratched, having a rigid appearance, and being bulky.

[0071] Twelfth, it adopts a new BC battery cell power generation design. By sewing brackets and bracket straps on the outside of the fabric encapsulation, it can be charged at multiple angles, and the power is about 10% higher than that of ordinary charging boards. This improves the shortcomings of the original charging boards, which have a rigid appearance and cannot freely support the switching of angles during charging.

[0072] Thirteenth, the process of connecting the built-in double-conductor copper foil tape through substrate lamination and fabric sewing is adopted. Different colored fabrics are used for sewing, which improves the shortcomings of the original aluminum frame glass-encapsulated solar folding panel device, which has a relatively simple shape and appearance and limited choices.

[0073] Fourteenth, it has a strong load-bearing capacity. When folded, the product can bear a weight of up to 65KG, ensuring durability and reliability.

[0074] Fifteenth, by laminating ETFE film onto Teflon mesh fabric, a honeycomb pattern is formed on the surface of the bifacial solar module, which improves the shortcomings of the original flat solar module, which has a relatively simple and rigid appearance and limited selection.

[0075] It should be understood that the specific order or hierarchy of steps in the disclosed process is an example of an exemplary method. Based on design preferences, it should be understood that the specific order or hierarchy of steps in the process may be rearranged without departing from the scope of this disclosure. The appended method claims provide elements of various steps in an exemplary order and are not intended to limit the scope to the specific order or hierarchy described.

[0076] In the above detailed description, various features are combined together in a single embodiment to simplify this disclosure. This approach to disclosure should not be construed as reflecting an intention that embodiments of the claimed subject matter require more features than are explicitly stated in each claim. Rather, as reflected in the appended claims, the invention is presented with fewer features than all of the features in a single disclosed embodiment. Therefore, the appended claims are hereby explicitly incorporated into the detailed description, with each claim representing a separate preferred embodiment of the invention.

[0077] The disclosed embodiments have been described above to enable any person skilled in the art to implement or use this invention. Various modifications to these embodiments will be apparent to those skilled in the art, and the general principles defined herein can be applied to other embodiments without departing from the spirit and scope of this disclosure. Therefore, this disclosure is not limited to the embodiments given herein, but is consistent with the widest scope of the principles and novel features disclosed in this application.

[0078] The foregoing description includes examples of one or more embodiments. It is certainly impossible to describe all possible combinations of components or methods in order to describe the above embodiments, but those skilled in the art will recognize that further combinations and arrangements of the various embodiments are possible. Therefore, the embodiments described herein are intended to cover all such changes, modifications, and variations falling within the scope of the appended claims. Furthermore, the term "comprising" as used in the specification or claims is used in a manner similar to the term "including." Additionally, the use of any term "or" in the specification of the claims is intended to mean "non-exclusive or."

[0079] The specific embodiments described above further illustrate the purpose, technical solution, and beneficial effects of this utility model. It should be understood that the above description is only a specific embodiment of this utility model and is not intended to limit the scope of protection of this utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the scope of protection of this utility model.

Claims

1. A portable BC battery solar charging device, characterized by, The application relates to a BC solar panel, which comprises the following components: at least one BC solar panel (1), a cloth layer (2) and a junction box (3); all the BC solar panels (1) are arranged on the front surface of the cloth layer (2) and the edges of the BC solar panels (1) are embedded in the cloth layer (2), and the BC solar panels (1) are fixedly connected with the cloth layer (2) through integral hot pressing; all the BC solar panels (1) are electrically connected in series and then connected with the junction box (3).

2. The portable BC battery solar charging device of claim 1, wherein, The BC solar panel (1) comprises a PET layer (11), an EVA layer (12), a BC cell piece (13) and a substrate layer (14).

3. The portable BC battery solar charging device of claim 1, wherein, The BC solar panel comprises a PET layer (11), an ETFE layer (15), an EVA layer (12), a BC cell piece (13) and a substrate layer (14).

4. The portable BC battery pack solar charging device of claim 3, wherein, The ETFE layer has a honeycomb structure formed through lamination of a Teflon mesh.

5. The portable BC battery solar charging device of claim 1, wherein, The BC solar panels (1) are rectangular and have the same size, and all the BC solar panels (1) are arranged on the front surface of the cloth layer (2) in a matrix form and are provided with intervals between adjacent BC solar panels (1); the BC solar panels (1) are electrically connected in series through copper braid which is laminated in the cloth layer (2).

6. The portable BC battery solar charging device of claim 1, wherein, The cloth layer (2) is provided with a plurality of hanging ears (21) on the edges.

7. The portable BC battery pack solar charging device of claim 1, wherein, A support plate (22) is arranged on the back surface of the cloth layer (2) in the region of each BC solar panel (1), and one end of the support plate (22) is rotatably connected with the cloth layer (2).

8. The portable BC battery pack solar charging device of claim 1, wherein, A first magic tape (23) with a hook surface or a fuzzy surface is arranged on the middle part of the back surface of the cloth layer (2). A cover cloth (24) which is not covered by the BC solar panel (1) is reserved on the right part of the cloth layer (2), and the front surface of the cover cloth (24) is provided with a second magic tape (25) with a fuzzy surface or a hook surface which is adhesively matched with the first magic tape (23). A handle (26) is arranged on the middle part of the back surface of the cloth layer (2), and the handle (26) is made of silica gel.

9. The portable BC battery pack solar charging device of claim 1, wherein, A storage bag (27) is further arranged on the back surface of the cloth layer (2), the storage bag (27) is provided with the junction box (3) and an outgoing line (4), the outgoing line (4) and the junction box (3) are sealingly connected, the inner wall of the junction box (3) is provided with a waterproof rubber ring, and the junction box (3) is provided with a plurality of USB waterproof converter interfaces.

10. The portable BC battery pack solar charging device of claim 1, wherein, The cloth layer is waterproof nylon cloth.

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