Wireless charging device

Abstract

The utility model provides a wireless charging device, and relates to the technical field of mobile power supplies, the wireless charging device comprises a housing with an accommodating cavity, the surface of the housing back to the accommodating cavity is provided with a charging position; the flexible magnetic part is arranged at the charging position and is used for magnetically adsorbing the to-be-charged equipment so as to fix the to-be-charged equipment at the charging position; and the wireless charging module is arranged in the accommodating cavity, and the wireless charging module is used for wirelessly charging the to-be-charged equipment fixed at the charging position. According to the wireless charging device provided by the utility model, the magnetic attraction force is improved, and the to-be-charged equipment is fixed more firmly at the charging position, so that the charging efficiency is improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to mobile power supply technical field especially relates to a wireless charging device. BACKGROUND

[0002] The basic principle of the magnetic wireless charging device is electromagnetic induction. When the transmitting coil is passed through alternating current, an alternating magnetic field is generated. When the device to be charged is close to the transmitting coil, the alternating magnetic field will generate an induced electromotive force in the receiving coil, thereby forming an induced current. Then, through circuit conversion and control, the induced current is converted into direct current to charge the battery of the device to be charged. The magnetic wireless charging device is adsorbed together with the device to be charged through magnetic force, making the charging operation more convenient. The magnet of the traditional magnetic wireless charging device is usually arranged inside the shell of the wireless charging device, and the distance between the magnet and the device to be charged is far, which leads to poor magnetic attraction force between them, thereby affecting the charging efficiency. SUMMARY

[0003] The utility model provides a wireless charging device for improving wireless charging efficiency.

[0004] The utility model discloses an embodiment of a wireless charging device, which comprises a shell, the shell has a containing cavity, the surface of the shell away from the containing cavity is provided with a charging position, a flexible magnetic part is arranged at the charging position, the flexible magnetic part is used for magnetically adsorbing a device to be charged, so as to fix the device to be charged at the charging position, and a wireless charging module is arranged in the containing cavity, and the wireless charging module is used for wirelessly charging the device to be charged fixed at the charging position.

[0005] Further, the charging position is provided with a groove, and the flexible magnetic part is arranged in the groove.

[0006] Further, the flexible magnetic part is bonded with the groove wall.

[0007] Further, part of the flexible magnetic part is contained in the groove, and the other part protrudes from the surface of the shell.

[0008] Further, the surface of the flexible magnetic part away from the containing cavity is provided with a charging position indicating layer.

[0009] Further, the flexible magnetic part adopts a flexible samarium-iron-nitrogen magnet.

[0010] Further, the flexible magnetic part is an annular integrally formed structure pressed.

[0011] Further, the shell comprises a shell main body and a shell cover, the shell main body has an opening, the shell cover closes the opening, and the containing cavity is formed between the shell main body and the shell cover, and the charging position is located on a surface of the shell cover facing away from the containing cavity.

[0012] Further, the wireless charging module comprises a wireless charging coil and a battery, both of which are arranged in the containing cavity, the wireless charging coil is electrically connected with the battery, and is arranged on a side of the battery facing the shell cover.

[0013] Further, a support is arranged on a surface of the shell main body facing away from the shell cover, and the support is rotationally connected with the shell main body through the damping hinge.

[0014] The wireless charging device provided by the utility model has the advantages that the charging position is arranged on the outer surface of the shell, the flexible magnetic member is arranged on the charging position, that is, the flexible magnetic member is located on the outer side of the shell, therefore, the flexible magnetic member can be more closely adsorbed with the device to be charged (such as a mobile phone, a tablet computer and the like), the wireless charging device is more firmly adsorbed with the device to be charged, the wireless charging device and the device to be charged are not easy to fall off in the charging process, and the stable charging state can be maintained when the wireless charging device and the device to be charged are moved, so that the charging efficiency is improved. In addition, the flexible magnetic member has higher anti-fracture capacity and is not easy to be fractured by knocking or impact, therefore, the flexible magnetic member is arranged on the outer side of the shell, the charging efficiency is not affected by the fracture of the flexible magnetic member, so that the charging efficiency of the wireless charging device provided by the utility model is improved. BRIEF DESCRIPTION OF DRAWINGS

[0015] Figure 1 A structural schematic view of one perspective of the wireless charging device provided by some embodiments of the utility model is shown;

[0016] Figure 2 A structural schematic view of the wireless charging device provided by some embodiments of the utility model after the shell cover is hidden is shown;

[0017] Figure 3 A sectional view of the wireless charging device provided by some embodiments of the utility model is shown;

[0018] Figure 4 Another structural schematic view of the wireless charging device provided by some embodiments of the utility model is shown.

[0019] EXPLANATION OF REFERENCE NUMERALS

[0020] 1, shell; 2, charging position; 3, flexible magnetic member; 4, containing cavity; 5, wireless charging module; 6, groove; 7, shell main body; 8, shell cover; 9, wireless charging coil; 10, battery; 11, support; 12, damping hinge; 13, hand buckle part; 14, charging and discharging state indicating assembly; 15, control circuit board. Detailed Implementation

[0021] The embodiments of the technical solution of this application will now be described in detail with reference to the accompanying drawings. These embodiments are only used to more clearly illustrate the technical solution of this application and are therefore merely examples, and should not be used to limit the scope of protection of this application.

[0022] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application pertains; the terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the application; the terms “comprising” and “having”, and any variations thereof, in the specification, claims, and foregoing description of the drawings are intended to cover non-exclusive inclusion.

[0023] In this document, the term "embodiment" means that a particular feature, structure, or characteristic described in connection with an embodiment may be included in at least one embodiment of this application. The appearance of this phrase in various places throughout the specification does not necessarily refer to the same embodiment, nor is it a separate or alternative embodiment mutually exclusive with other embodiments. It will be explicitly and implicitly understood by those skilled in the art that the embodiments described herein can be combined with other embodiments.

[0024] In the description of the embodiments of this application, the technical terms "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "circumferential," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing the embodiments of this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed, operated, or used in a specific orientation. Therefore, they should not be construed as limitations on the embodiments of this application.

[0025] In the description of the embodiments of this application, unless otherwise expressly specified and limited, technical terms such as "installation," "connection," "joining," and "fixing" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in the embodiments of this application according to the specific circumstances.

[0026] The wireless charging device is a device for wirelessly charging a mobile device in need of charging, such as a mobile phone wireless charger, a tablet wireless charger and the like. It has attracted widespread attention because it can provide convenient charging service for users. As a portable power supply, it can provide stable charging service for users and meet the demand for power supply during outdoor activities. For the sake of description, the mobile device in need of charging is referred to as the device to be charged hereinafter.

[0027] Generally, the wireless charging device has a magnet that magnetically attracts a magnetic attraction piece in the device to be charged to fix the device to be charged at a charging position of the wireless charging device, so that the device to be charged and the transmitting coil of the wireless charging device are close to each other to realize wireless charging through mutual induction. Currently, some wireless charging devices use neodymium iron boron magnets. The neodymium iron boron magnet is prone to brittle fracture. It is usually arranged inside the shell of the wireless charging device to prevent brittle fracture of the neodymium iron boron magnet when it falls or collides. However, this makes the distance between the magnet and the device to be charged farther, resulting in poor magnetic attraction force between them, thereby affecting the charging efficiency.

[0028] Therefore, the embodiments of the present application provide a wireless charging device that uses a flexible magnetic piece. The flexible magnetic piece has high brittle fracture resistance. The flexible magnetic piece is arranged outside the shell. First, the flexible magnetic piece is not prone to brittle fracture because it is arranged outside the shell. Therefore, it can maintain high charging efficiency. Second, the flexible magnetic piece is arranged outside the shell, so that the flexible magnetic piece can be more closely attracted to the device to be charged. Therefore, the wireless charging device and the device to be charged are more firmly attracted, so that the device to be charged is not easily detached during charging and can maintain a stable charging state during movement, thereby further improving the charging efficiency.

[0029] Below, the embodiments of the present application are described in detail with reference to the accompanying drawings. Figures 1 to 4 The embodiments of the present application are described in detail.

[0030] Figure 1 A structure diagram of a wireless charging device provided by some embodiments of the present application is shown from one perspective; Figure 2 A structure diagram of a wireless charging device provided by some embodiments of the present application is shown after the shell cover is hidden; Figure 3 A cross-sectional view of a wireless charging device provided by some embodiments of the present application is shown; Figure 4 A structure diagram of a wireless charging device provided by some embodiments of the present application is shown from another perspective.

[0031] As Figures 1 to 4As shown, the application provides a wireless charging device, which comprises a shell 1, a flexible magnetic member 3 and a wireless charging module 5. The shell 1 has a receiving cavity 4, and the surface of the shell 1 opposite to the receiving cavity 4 is provided with a charging position 2. The flexible magnetic member 3 is arranged on the charging position 2, and is used for magnetically attracting a device to be charged to fix the device to be charged on the charging position 2. The wireless charging module 5 is arranged in the receiving cavity 4, and is used for wirelessly charging the device to be charged fixed on the charging position 2.

[0032] The flexible magnetic member 3 refers to a component with certain flexibility and magnetism. The shape of the flexible magnetic member 3 is not limited, which can be a circular sheet structure, a circular ring sheet structure or the like.

[0033] The wireless charging device provided by the application has the charging position 2 arranged on the outer surface of the shell 1, and the flexible magnetic member 3 is arranged on the charging position 2, that is, the flexible magnetic member 3 is located on the outer side of the shell 1. Therefore, the flexible magnetic member 3 can be more closely attracted to the device to be charged (such as a mobile phone, a tablet computer or the like), so that the wireless charging device and the device to be charged are more firmly attracted, and the wireless charging device and the device to be charged are not easy to fall off during the charging process, and can maintain a stable charging state during movement, thereby improving the charging efficiency. In addition, the flexible magnetic member has higher anti-fracture capacity, and is not easy to be brittle when being bumped or impacted. Therefore, the flexible magnetic member 3 is arranged on the outer side of the shell 1, and the charging efficiency is not affected by the brittle fracture of the flexible magnetic member 3. Therefore, the charging efficiency of the wireless charging device provided by the application is improved.

[0034] In some embodiments of the application, as shown in the drawings, Figure 3 The charging position 2 is provided with a groove 6, and the flexible magnetic member 3 is arranged in the groove 6.

[0035] For example, the flexible magnetic member 3 is entirely contained in the groove 6, that is, the flexible magnetic member 3 does not exceed the slot of the groove 6.

[0036] For example, part of the flexible magnetic member 3 is contained in the groove 6, and the other part protrudes outside through the slot of the groove 6. That is, part of the flexible magnetic member 3 is contained in the groove 6, and the other part protrudes from the outer surface of the shell 1.

[0037] The groove 6 is a recessed structure for containing at least part of the flexible magnetic member 3. The shape of the groove 6 is matched with the shape of the flexible magnetic member, for example, the flexible magnetic member 3 is a circular ring structure, and the groove 6 is a circular ring structure with a size matched with the flexible magnetic member 3.

[0038] The groove 6 can better contain and fix the flexible magnetic member 3, and can ensure that the flexible magnetic member 3 is stably fixed on the charging position 2, so as to prevent the flexible magnetic member 3 from sliding or shifting, thereby improving the efficiency and safety of the charging.

[0039] In some embodiments of the present application, the flexible magnetic member 3 is bonded to the groove wall of the groove 6.

[0040] The bonding can ensure the stable position of the flexible magnetic member 3 in the groove 6, and prevent it from falling off or shifting, thereby ensuring the stability and reliability of the charging, and thus improving the charging efficiency. By using appropriate adhesive and bonding technology, the connection between the flexible magnetic member 3 and the groove 6 can have sufficient strength and durability to withstand wear and impact in daily use.

[0041] In some embodiments of the present application, part of the flexible magnetic member 3 is accommodated in the groove 6, and the other part protrudes from the surface of the shell 1.

[0042] The flexible magnetic member 3 is partially and firmly fixed in the groove 6, which can keep the flexible magnetic member 3 stable and prevent it from falling off. Since the flexible magnetic member 3 partially protrudes from the surface of the shell 1, the flexible magnetic member 3 can be closer to the magnetic component in the device to be charged, thereby enhancing the magnetic attraction and improving the stability and efficiency of the charging. The part of the flexible magnetic member 3 protruding from the surface of the shell 1 also serves to indicate the charging position, ensuring the efficiency of the charging operation.

[0043] In some embodiments of the present application, the surface of the flexible magnetic member 3 opposite to the accommodating cavity 4 is provided with a charging position indicating layer.

[0044] For example, the charging position indicating layer protrudes from the outer surface of the shell 1.

[0045] For example, the surface color of the charging position indicating layer is different from the color of the outer surface of the shell 1.

[0046] For example, the surface of the charging position indicating layer is provided with an indicating pattern.

[0047] The charging position indicating layer can be an indicating layer attached to the surface of the flexible magnetic member 3 by spraying, brushing or bonding, etc., for visually indicating the charging position. Through clear visual indication, the user can quickly and accurately find the charging position, ensuring the efficiency and stability of the charging operation.

[0048] In some embodiments of the present application, the flexible magnetic member 3 is made of a flexible samarium-nitrogen-iron magnet.

[0049] The samarium iron nitride magnet refers to a ternary or multi-metal intermetallic compound formed by R2Fe17 after nitriding treatment, such as R2Fe17Nx or R2Fe17NxH. The flexible magnetic piece 3 is formed by pressing the samarium iron nitride powder with an added binder. The binder can be a high-temperature resistant binder such as a polyimide type or a modified phenolic type. The high magnetic energy product and coercive force of the flexible samarium iron nitride magnet enable it to provide stronger magnetic attraction, improving charging efficiency and stability. At the same time, its good mechanical properties and temperature stability enable it to adapt to various complex application environments.

[0050] In some embodiments of the present application, the flexible magnetic piece 3 is a ring-shaped integrally formed structure formed by pressing.

[0051] For example, the flexible magnetic piece 3 is formed by pressing the samarium iron nitride powder with an added binder and other materials through a mold.

[0052] The flexible magnetic piece 3 is formed by pressing through a mold, which has a simple manufacturing process, can reduce labor costs, is conducive to shortening the production cycle and improving production efficiency. And by pressing through a mold, it is not easy to cause waste of raw materials, thereby improving material utilization and reducing production costs. In addition, the ring-shaped structure enables the flexible magnetic piece 3 to provide better magnetic force distribution and stability. Since the ring-shaped structure has a uniform edge and central cavity, it can more effectively guide the magnetic field lines, reduce magnetic force leakage, and improve the electromagnetic induction strength with the wireless charging coil or the magnetic component of the device to be charged.

[0053] In some embodiments of the present application, the shell 1 includes a shell body 7 and a shell cover 8, the shell body 7 has an opening, and the shell cover 8 closes the opening to form a containing cavity 4 between the shell body 7 and the shell cover 8, and the charging site 2 is located on the surface of the shell cover 8 facing away from the containing cavity 4.

[0054] Specifically, the shell body 7 includes a shell bottom and a side wall surrounding the shell bottom, the side wall is perpendicular to the shell bottom, and the side wall and the shell bottom together enclose an open cavity, and the shell cover 8 closes the opening to form the containing cavity 4. In this way, the shell body 7 and the shell cover 8 form the containing cavity 4 containing the wireless charging module, which plays a role in protecting the wireless charging module 5.

[0055] In some embodiments of the present application, as shown in Figure 2 The wireless charging module 5 includes a wireless charging coil 9 and a battery 10, both of which are arranged in the containing cavity 4. The wireless charging coil 9 is electrically connected to the battery 10 and is arranged on the side of the battery 10 facing the shell cover.

[0056] Exemplarily, the wireless charging coil 9 contacts the surface of the shell cover 8 facing the accommodating cavity 4. The line connecting the center of the wireless charging coil 9 with the center of the flexible magnetic piece 3 is perpendicular to the surface of the shell cover 8 facing away from the accommodating cavity 4, which helps to ensure the optimal alignment and maximum charging efficiency between the wireless charging coil 9 and the device to be charged. The flexible magnetic piece 3 is used to enhance the magnetic coupling between the wireless charging module 5 and the device to be charged, thereby improving the charging efficiency.

[0057] The wireless charging module 5 is responsible for generating a changing magnetic field to wirelessly transmit electric energy. When close to the receiving module of the device to be charged, the wireless charging coil 9 can induce the coil in the receiving module to generate an electric current, which in turn charges the battery in the device to be charged.

[0058] The battery 10 of the wireless charging module 5 is the energy source. It provides the required electric energy for the wireless charging coil 9 to generate a magnetic field. The energy transmission between the wireless charging coil 9 and the battery 10 is achieved through an electrical connection. The wireless charging coil 9 is arranged on the side of the battery 10 facing the shell cover, which facilitates wireless docking with the device to be charged and improves the charging efficiency.

[0059] In some embodiments of the present application, as shown in Figure 4 The surface of the shell body 7 facing away from the shell cover 8 is provided with a support 11, which is rotatably connected to the shell body 7 through a damping hinge 12.

[0060] Specifically, one end of the support 11 is connected with the damping hinge 12, and the other end of the support 11 opposite to the damping hinge 12 is used to abut against the part where the wireless charging device is placed.

[0061] The support 11 can flexibly adjust the angle or position of the wireless charging device through the damping hinge 12. By adjusting the angle of the support 11, the user can more conveniently use the device, improve the comfort and efficiency of use.

[0062] In some embodiments of the present application, as shown in Figure 4 The support 11 is provided with a hand grip part 13 as an auxiliary part for adjusting the angle of the support 11. The user can conveniently adjust the inclination angle or rotation direction of the support 11 by grabbing the hand grip part 13 and applying appropriate force.

[0063] In some embodiments of the present application, as shown in Figure 2 The wireless charging device further includes a control circuit board 15, which is arranged in the accommodating cavity 4 and connected with the battery 10. The control circuit board 15 is used to process various control signals, manage the current and voltage during the wireless charging process, and ensure the safety and efficiency of the wireless charging.

[0064] In some embodiments of the present application, as shown in Figure 1 and Figure 2As shown, the wireless charging device further comprises a charging and discharging state indication component 14, and the charging and discharging state indication component 14 is connected with the control circuit board 15. The charging and discharging state indication component 14 and the control circuit board 15 are in data communication through electrical connection. The control circuit board 15 is responsible for monitoring the key parameters such as the battery 10 power, charging current, charging voltage, etc. in the wireless charging device, and transmitting these information to the charging and discharging state indication component 14. After receiving the signal from the control circuit board 15, the charging and discharging state indication component 14 will display the corresponding state information according to the preset logic and algorithm, and provide intuitive and accurate information feedback for the user.

[0065] The above embodiments are only used to illustrate the technical solutions of the present application, but not limit the present application; although the present application has been described in detail with reference to the above embodiments, those skilled in the art should understand that the technical solutions recorded in the above embodiments can be modified, or some or all of the technical features can be replaced by equivalents; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the scope of the technical solutions of the embodiments of the present application, and they should be covered in the scope of the claims and the specification of the present application. Especially, as long as there is no structural conflict, each technical feature mentioned in each embodiment can be combined in any way. The present application is not limited to the specific embodiments disclosed in the present application, but includes all technical solutions falling within the scope of the claims.

Claims

1. A wireless charging device, characterized by, The application relates to a wireless charging device, which comprises the following parts: a shell with a containing cavity, the surface of the shell facing away from the containing cavity is provided with a charging position; a flexible magnetic piece arranged at the charging position, which is used for magnetically attracting a device to be charged to fix the device to be charged at the charging position; a wireless charging module arranged in the containing cavity, which is used for wirelessly charging the device fixed at the charging position.

2. The wireless charging device of claim 1, wherein, The charging position is provided with a groove, and the flexible magnetic piece is arranged in the groove.

3. The wireless charging device of claim 2, wherein, The flexible magnetic piece is bonded with the groove wall.

4. The wireless charging device of claim 2, wherein, Part of the flexible magnetic piece is arranged in the groove, and the other part protrudes from the surface of the shell.

5. The wireless charging device of any one of claims 1 to 4, wherein, The surface of the flexible magnetic piece facing away from the containing cavity is provided with a charging position marking layer.

6. The wireless charging device of any one of claims 1 to 4, wherein, The flexible magnetic piece is a flexible samarium-iron-nitrogen magnet.

7. The wireless charging device of any one of claims 1 to 4, wherein, The flexible magnetic piece is a ring-shaped integrally formed structure pressed.

8. The wireless charging device of any one of claims 1-4, wherein, The shell comprises a shell body and a shell cover, the shell body is provided with an opening, the shell cover closes the opening, and the containing cavity is formed between the shell body and the shell cover, and the charging position is located on the surface of the shell cover facing away from the containing cavity.

9. The wireless charging device of claim 8, wherein, The wireless charging module comprises a wireless charging coil and a battery, both arranged in the containing cavity, the wireless charging coil is electrically connected with the battery, and is arranged on the side of the battery facing the shell cover.

10. The wireless charging device of claim 8, wherein, The surface of the shell body facing away from the shell cover is provided with a support, and the support is rotationally connected with the shell body through a damping hinge.

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