A power bank

Abstract

The application provides a power bank, comprising: a battery and a mainboard arranged in a shell and electrically connected, and a USB interface, an indicator light and a button arranged on the surface of the shell and electrically connected with the mainboard; a magnetic cover plate is arranged in the shell; a coil is embedded in the magnetic cover plate, and magnets are annularly distributed on the periphery of the coil, and the magnetic poles of the coil and the wireless magnetic terminal are opposite; so as to be wirelessly and magnetically connected with a terminal device such as a mobile phone; the coil is electrically connected to the mainboard through a wire; and a folding support is arranged at the bottom of the shell. The magnetic cover plate, the coil and the magnets are matched to solve the problem that the power bank needs to be horizontally placed during wireless charging, realize wireless magnetic connection with a terminal device such as a mobile phone, and are more flexible to use; the folding support is convenient for users to stand up after the power bank and the device are combined, is convenient for video watching and other operations, and improves the use experience.

Description

Technical Field

[0001] This application relates to the field of mobile charging device technology, and in particular to a magnetic power bank. Background Technology

[0002] A power bank (also known as a portable power bank) is a portable energy storage device primarily used to charge digital products such as mobile phones, tablets, and laptops when no external power source is available. Its core functions include energy storage and stable output, and it is suitable for outdoor activities, travel, and everyday emergency power supply.

[0003] Existing power banks are primarily wired, which is inconvenient due to the need for a cable. Some wireless power banks lack magnetic charging devices, requiring horizontal placement for charging, and even those with support functions do not meet user needs. Therefore, this utility model proposes a power bank to at least partially solve the problems that exist in the prior art. Utility Model Content

[0004] In view of the aforementioned problems, this application is made in order to provide a power bank that overcomes or at least partially solves the aforementioned problems.

[0005] One embodiment of this application discloses a power bank, comprising:

[0006] The battery and motherboard are disposed inside the housing and electrically connected, and the USB interface, indicator light and button are disposed on the surface of the housing and electrically connected to the motherboard;

[0007] A magnetic cover plate is fitted to the housing.

[0008] A coil is embedded in the magnetic cover, and magnets are distributed in a ring around the coil, with their magnetic poles opposite to those of the wireless magnetic terminal; so as to facilitate wireless magnetic connection with terminal devices such as mobile phones.

[0009] The coil is electrically connected to the motherboard via a wire;

[0010] The bottom of the housing is equipped with a folding bracket.

[0011] Optionally, the magnetic cover also includes an upper cover with a groove on its inner side;

[0012] The coil and the magnet are embedded and fitted in the groove.

[0013] Optionally, it also includes a coil holder, which is embedded in the groove, and the coil is disposed on the coil holder;

[0014] The magnets are distributed around the periphery of the coil frame.

[0015] Optionally, a soft padding layer is fitted onto the inner side of the top cover.

[0016] Optionally, a protective shell is fitted onto the upper end of the cover.

[0017] Optionally, it also includes an NTC resistor, which is attached to the battery and electrically connected to the motherboard.

[0018] Optionally, the battery is an even number of independent battery cells.

[0019] Optionally, the motherboard includes a first motherboard and a second motherboard that are electrically connected to each other;

[0020] Even-numbered battery blocks are electrically connected to the first and second main boards;

[0021] The USB interface, indicator lights, and buttons are electrically connected to the first motherboard and the second motherboard.

[0022] This application has the following advantages:

[0023] In the embodiments of this application, a battery and a motherboard are disposed inside the housing and electrically connected, and a USB interface, indicator light, and button are disposed on the surface of the housing and electrically connected to the motherboard; a magnetic cover is disposed to cover the housing; a coil is embedded in the magnetic cover, and magnets are distributed in a ring around the coil, with their magnetic poles opposite to those of the wireless magnetic terminal; this facilitates wireless magnetic connection with terminal devices such as mobile phones; the coil is electrically connected to the motherboard through wires; and a folding bracket is provided at the bottom of the housing. By setting up the battery, motherboard, USB interface, indicator light, and button, a complete basic functional module of the power bank is formed, realizing energy storage and output; the magnetic cover, together with the coil and magnets, solves the problem of horizontal placement during wireless charging, realizing wireless magnetic connection with terminal devices such as mobile phones, making it more flexible to use; the folding bracket allows users to stand the power bank and device upright after combination, facilitating operations such as watching videos, improving the user experience. Attached Figure Description

[0024] To more clearly illustrate the technical solution of this application, the drawings used in the description of this application will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0025] Figure 1 This is a schematic diagram of the structure of a power bank provided in one embodiment of this application;

[0026] Figure 2This is a schematic diagram of the first exploded structure of a power bank according to an embodiment of this application;

[0027] Figure 3 This is a schematic diagram of the second exploded structure of a power bank according to an embodiment of this application;

[0028] Figure 4 This is a schematic diagram of the third exploded structure of a power bank provided in an embodiment of this application.

[0029] In the attached diagram: 1. Housing; 2. Magnetic cover; 3. Battery; 101. USB interface; 102. Indicator light; 103. Button; 201. Top cover; 202. Coil; 203. Magnet; 204. Coil holder; 205. Wire; 206. Soft padding layer; 207. Protective shell; 301. First battery; 302. Second battery; 303. First main board; 304. Second main board; 305. NTC resistor. Detailed Implementation

[0030] To make the objectives, features, and advantages of this application more apparent and understandable, the application will be further described in detail below with reference to the accompanying drawings and specific embodiments. Obviously, the described embodiments are only some, not all, of the embodiments of this application. All other embodiments obtained by those skilled in the art based on the embodiments of this application without inventive effort are within the scope of protection of this application.

[0031] Reference Figures 1 to 4 This application provides a power bank comprising: a battery 3 and a motherboard disposed within and electrically connected to a housing 1; a USB interface 101, an indicator light 102, and a button 103 disposed on the surface of the housing 1 and electrically connected to the motherboard; a magnetic cover 2 covering the housing 1; a coil 202 embedded within the magnetic cover 2, wherein magnets 203 are arranged in a ring around the coil 202, and the magnetic poles of the coil 202 are opposite to those of the magnetic poles of the wireless magnetic terminal; so as to facilitate wireless magnetic connection with terminal devices such as mobile phones; the coil 202 is electrically connected to the motherboard via a wire 205; and a folding bracket 104 is provided at the bottom of the housing 1.

[0032] By incorporating battery 3, motherboard, USB port 101, indicator light 102, and button 103, a complete basic functional module for the power bank is established, enabling energy storage and output. The magnetic cover 2, in conjunction with coil 202 and magnet 203, solves the problem of horizontal placement required for wireless charging, achieving wireless magnetic connection with mobile phones and other terminal devices, making it more flexible to use. The foldable stand 104 allows users to easily assemble the power bank and device, facilitating video viewing and other operations, thus enhancing the user experience. For example, while riding the subway, a user can attach the magnetic power bank to the back of their phone, use the foldable stand to prop the phone up on a small table, and watch videos while charging without holding the phone. The array of ring magnets 203, with its magnetic poles reversed to those of the terminal device, achieves automatic alignment, overcoming the limitation of horizontal placement and supporting charging at any angle. The bottom stand 104, when unfolded, can stand the terminal device vertically, meeting the needs of multiple scenarios where charging and use are combined (such as video viewing). The USB port 101, button 103, and indicator light 102 are compatible with both wired and wireless charging modes. For example, the phone automatically attaches and charges when the user brings it close to the cover, and the phone can be operated in portrait mode when the folding stand is unfolded. The USB interface mentioned above can preferably be a Type-C interface. The button 103 can be used as a multi-function button, for example, a short press can display the battery level and indicate it via an indicator light, and a long press can switch the wireless charging function on or off, etc.

[0033] In some embodiments of this application, the magnetic cover 2 further includes an upper cover 201 with a groove 211 on its inner side; the coil 202 and the magnet 203 are embedded and fitted in the groove 211.

[0034] The groove 211 on the inner side of the top cover 201 provides a regular installation space for the coil 202 and the magnet 203, making the internal structure more compact and reasonable. This helps improve the stability and reliability of the cover plate 2, while also facilitating production and installation. The groove 211 precisely fixes the positions of the coil 202 and the magnet 203, avoiding a decrease in charging efficiency caused by component misalignment, and also reducing the thickness of the cover plate. For example, the groove 211 is pre-formed during the injection molding of the top cover 201. After the coil 202 and the magnet 203 are embedded, they are flush with the surface of the cover plate, eliminating the risk of protrusion and wear.

[0035] In some embodiments of this application, a coil frame 204 is also included, which is embedded in the groove 211, and the coil 202 is disposed on the coil frame 204; the magnet 203 is distributed around the periphery of the coil frame 204.

[0036] The aforementioned coil frame 204 further secures and protects the coil 202, making it less susceptible to damage during use and ensuring the stability of wireless charging. Magnets 203 are distributed around the coil frame 204, which can generate a more uniform magnetic field, enhance the magnetic attraction effect, and make the connection between the power bank and the terminal device more secure.

[0037] like Figure 2 and Figure 4 As shown, the coil holder 204 is T-shaped. A conductor surface can be placed on the back of the coil holder 204 (the side facing the inside of the power bank) to form an electromagnetic shielding layer, thereby preventing the coil 202 from causing electromagnetic interference to the inside of the power bank. Furthermore, the coil holder 204 also serves to fix the coil; for example, it provides physical support to prevent deformation of the coil 202. The surrounding arrangement of magnets 203 enhances the uniformity of the attraction force, improving the stability of the terminal device. The coil holder 204 is made of high-temperature resistant engineering plastic, and the magnets are arranged with alternating N and N poles, ensuring that the phone will not fall off even when shaken after being attracted.

[0038] In some embodiments of this application, a soft padding layer 206 is attached to the inner side of the top cover 201. This soft padding layer 206, attached to the inner side of the top cover 201, effectively buffers the impact force when the power bank's interior and battery 3 come into contact, thus protecting the device. The soft padding layer 206 can be made of polyurethane foam or EVA (ethylene-vinyl acetate copolymer).

[0039] Furthermore, the cushioning layer 206 can also be a double-layer structure, consisting of polyurethane foam and EVA layers. The polyurethane foam cushioning layer buffers collisions between devices, while the EVA layer blocks electromagnetic interference, providing dual protection and enhancing safety.

[0040] A protective shell 207 is attached to the upper end of the aforementioned cover 201. The protective shell 207 is attached to the upper end of the cover 201, which can further protect the coils, magnets and other components inside the cover from external impacts and wear, extend the service life of the power bank, and improve the product's appearance and texture.

[0041] For example, if a power bank is accidentally dropped from a table, the protective case can effectively resist the impact and prevent damage to the internal components. In addition, the protective case can be designed with different colors and patterns to make the power bank more aesthetically pleasing.

[0042] In some embodiments of this application, such as Figure 3 As shown, it also includes an NTC resistor 305, which is attached to the battery and electrically connected to the motherboard.

[0043] By attaching the NTC resistor 305 to the battery 3 and connecting it to the motherboard, the battery temperature can be monitored in real time. When the battery temperature is too high, the motherboard can adjust the charging current or stop charging in time to prevent the battery from overheating and causing safety problems, thus improving the safety of the power bank. During long-term continuous charging, if the temperature of the battery 3 rises, the NTC resistor 305 will detect it, and the motherboard will automatically reduce the charging current to prevent the battery from bulging or even exploding due to overheating, thus ensuring the safety of the power bank.

[0044] In some embodiments of this application, the battery 3 is an even number of independent batteries. Using an even number of independent batteries 3 allows for balanced charging and discharging through a well-designed circuit, improving overall battery performance and lifespan, and also enhancing the power bank's range to some extent. For example, a power bank composed of two lithium-ion batteries of the same capacity exhibits more balanced power consumption and replenishment during charging and discharging. Compared to a single large-capacity battery, this results in slower battery aging and a longer power bank usage time.

[0045] Furthermore, the motherboard includes a first motherboard 303 and a second motherboard 304 electrically connected to each other; an even number of batteries are evenly distributed and electrically connected to the first motherboard 303 and the second motherboard 304; the USB interface 101, indicator light 102, and button 103 are electrically connected to the first motherboard 303 and the second motherboard 304. For example, the first battery 301 is electrically connected to the first motherboard 303, and the second battery 302 is electrically connected to the second motherboard 304. The two batteries 3 can be of the same capacity or different capacities. In this application, lithium-ion batteries of the same capacity and specifications are preferred. The BMS built into the dual motherboards can better manage the batteries in the power bank.

[0046] With a dual-mainboard design and an even number of batteries connected, each mainboard independently manages a portion of the batteries. The built-in BMS (Battery Management System) provides more precise charge / discharge management, power monitoring, and protection, improving battery management efficiency and accuracy, and further ensuring the power bank's performance and safety. During charging, the first mainboard manages the first battery, and the second mainboard manages the second battery. Both mainboards optimize charging for their respective batteries, avoiding overcharging and over-discharging, and extending battery life.

[0047] As an example, the aforementioned NTC resistor 305 monitors the battery temperature in real time, triggering over-temperature protection on the motherboard (such as power reduction / power cutoff) to prevent thermal runaway. During charging in the aforementioned high-temperature environment, the NTC automatically cuts off power when the battery reaches 60°C, resuming charging after cooling. The symmetrical layout of the even-numbered batteries optimizes the heat dissipation path, and the dual-path parallel connection reduces the load on individual cells, extending the overall cycle life. Specifically, two 5000mAh batteries can be connected in parallel, still providing 50% emergency power in case of a single-path failure; independent management of the battery pack avoids overloading of a single motherboard, improving output stability.

[0048] Although preferred embodiments of the present application have been described, those skilled in the art, upon learning the basic inventive concept, can make other changes and modifications to these embodiments. Therefore, the appended claims are intended to be interpreted as including the preferred embodiments as well as all changes and modifications falling within the scope of the embodiments of the present application.

[0049] Finally, it should be noted that in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or terminal device that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or terminal device. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or terminal device that includes said element.

[0050] The above provides a detailed description of a power bank provided by this application. Specific examples have been used to illustrate the principles and implementation methods of this application. The description of the above embodiments is only for the purpose of helping to understand the method and core ideas of this application. At the same time, for those skilled in the art, there will be changes in the specific implementation methods and application scope based on the ideas of this application. Therefore, the content of this specification should not be construed as a limitation of this application.

Claims

1. A power bank, characterized in that, include: The battery and motherboard are disposed inside the housing and electrically connected, and the USB interface, indicator light and button are disposed on the surface of the housing and electrically connected to the motherboard; The magnetic cover plate is fitted to the housing. A coil is embedded in the magnetic cover plate, and magnets are distributed in a ring around the coil, with their magnetic poles opposite to those of the wireless magnetic terminal. The coil is electrically connected to the motherboard via a wire; The bottom of the housing is equipped with a folding bracket.

2. The power bank according to claim 1, characterized in that, The magnetic cover also includes an upper cover with a groove on its inner side; The coil and the magnet are embedded and fitted in the groove.

3. The power bank according to claim 2, characterized in that, It also includes a coil frame, which is embedded in the groove, and the coil is disposed on the coil frame; The magnets are distributed around the periphery of the coil frame.

4. The power bank according to claim 2, characterized in that, A soft padding layer is fitted to the inside of the top cover.

5. The power bank according to claim 2, characterized in that, A protective shell is fitted to the upper end of the cover.

6. The power bank according to claim 1, characterized in that, It also includes an NTC resistor, which is attached to the battery and electrically connected to the motherboard.

7. The power bank according to claim 1, characterized in that, The battery consists of an even number of independent batteries.

8. The power bank according to claim 7, characterized in that, The motherboard includes a first motherboard and a second motherboard that are electrically connected to each other. Even-numbered battery blocks are electrically connected to the first and second main boards; The USB interface, indicator lights, and buttons are electrically connected to the first motherboard and the second motherboard.

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