Annular Halbach strong magnetic module wireless charging device

Abstract

The utility model discloses an annular Halbach strong magnetic module wireless charging device, two opposite sides of an iron ring are respectively bonded with an annular magnet assembly and a bearing body, the annular magnet assembly and the iron ring are provided with matched abdicating openings, the annular magnet assembly comprises a plurality of connected fan-shaped parts, and the fan-shaped parts are connected with the bearing body. The inner side magnet and the outer side magnet are arranged on the two opposite sides of the middle magnet respectively and abut against the middle magnet, the middle magnet is magnetized in a left-right mirror image mode, the inner side magnet and the outer side magnet are magnetized in an up-down mirror image mode respectively, and the magnetic poles, located on the upper portions of respective bodies, of the inner side magnet and the outer side magnet are opposite. The magnetic field of the side, provided with the iron sheet, of the annular magnet assembly is shielded, the side, away from the iron sheet, of the annular magnet assembly gives play to the maximum magnetic force standard of the magnets, a uniform magnetic field is generated on the surface, and the structure is more symmetrical and balanced due to the design of the three magnets in the fan-shaped part and the distribution of magnetic poles; noise generated by magnet vibration caused by non-uniform magnetic field or asymmetric structure can be reduced.

Description

TECHNICAL FIELD

[0001] The utility model relates to magnet assembly technical field especially relates to a kind of annular Halbach strong magnetic module wireless charging element. BACKGROUND

[0002] The structure of mobile phone or mobile phone support etc. can use Halbach array magnet as magnetic attraction positioning structure when wireless charging, to accurately and stably position mobile phone, to ensure that transmitting end and receiving end efficient docking transmission.

[0003] But in the Halbach array magnet structure of annular structure, N pole and S pole are generally arranged as inner and outer sides, this kind of arrangement can have larger magnetic flux density at ring inner side and ring outer side, and the magnetic force at the center of ring is smaller, which can cause that the overall magnetic attraction is not strong, and the magnetic attraction at different positions is inconsistent, affecting the overall magnetic attraction stability and structural stability. UTILITY MODEL CONTENT

[0004] The utility model discloses a kind of annular Halbach strong magnetic module wireless charging element, the magnetic field of one side of annular magnet assembly with sheet metal is shielded, the side far from sheet metal exerts the maximum magnetic force standard of magnet itself, and the annular structure of annular magnet assembly can make it can generate more uniform magnetic field on surface, and the design of three magnets in sector part and the distribution of magnetic pole make structure more symmetrical and balanced, not prone to deformation damage, can reduce the noise generated by magnet vibration due to uneven magnetic field or asymmetric structure.

[0005] To achieve the above object, the utility model adopts the technical scheme: a kind of annular Halbach strong magnetic module wireless charging element, including annular magnet assembly, iron ring and carrier, the opposite sides of the iron ring are respectively through the first adhesive layer and the second adhesive layer bonding annular magnet assembly and carrier, annular magnet assembly and iron ring have matching make room opening, the annular magnet assembly includes multiple connected sector parts, the sector part includes middle magnet, and inner side magnet and outer side magnet respectively arranged at the opposite sides of the middle magnet and with the middle magnet abut, the middle magnet is left-right mirror image magnetization, the inner side magnet and outer side magnet are respectively upper mirror image magnetization, and the magnetic pole on the upper portion of the body of the two is opposite.

[0006] As further optimization, the magnetic pole of the middle magnet close to the inner side magnet side is N pole, and the magnetic pole of the other side is S pole.

[0007] As further optimization, the magnetic pole of the middle magnet far from the inner side magnet side is N pole, and the magnetic pole of the other side is S pole.

[0008] As a further optimization, the upper magnetic pole of the inner magnet is the N pole and the lower magnetic pole is the S pole; the upper magnetic pole of the outer magnet is the S pole and the lower magnetic pole is the N pole.

[0009] As a further optimization, the upper magnetic pole of the outer magnet is the N pole and the lower magnetic pole is the S pole; the upper magnetic pole of the inner magnet is the S pole and the lower magnetic pole is the N pole.

[0010] As a further optimization, the number of each of the middle magnet, inner magnet, and outer magnet is the same as the number of the sector portion.

[0011] As a further optimization, the number of the inner magnet and the number of the outer magnet are the same as the number of the sector, and the plurality of the middle magnets are integrally formed.

[0012] As a further optimization, the number of the sector-shaped parts is eight to thirty-two, and the appropriate number can be selected for splicing according to the application scenario, usage requirements, and overall size.

[0013] As a further optimization, the carrier is a mela sheet.

[0014] As a further optimization, the carrier is provided with multiple positioning through holes, which facilitates the removal of the carrier or the overall structure through the positioning through holes.

[0015] Compared with the prior art, the present invention has the following beneficial effects:

[0016] 1. The magnetic field on the side of the ring magnet assembly with the iron plate is shielded, while the side away from the iron plate exerts the maximum magnetic force of the magnet itself. In addition, the ring structure of the ring magnet assembly can generate a relatively uniform magnetic field on the surface, which is suitable for scenarios with high requirements for magnetic field stability.

[0017] 2. The ring structure design is more compact and stable. The design of the three magnets in the sector and the distribution of the magnetic poles make the structure more symmetrical and balanced, less prone to deformation and damage, and can reduce the noise caused by magnet vibration due to uneven magnetic field or structural asymmetry. Attached Figure Description

[0018] Fig. 1 This is a structural diagram of the present invention.

[0019] Fig. 2 This is an exploded view of the present invention.

[0020] Fig. 3 This is a structural diagram of the sector-shaped portion in one embodiment of the present invention.

[0021] Fig. 4 This is a schematic diagram of the magnetic poles of the annular magnet assembly of this utility model. Detailed Implementation

[0022] The following are specific embodiments of the present invention, which are described in conjunction with the accompanying drawings. However, the present invention is not limited to these embodiments.

[0023] like Figs. 1 to 4 As shown, a wireless charging component for a ring-shaped Helbeck strong magnetic module includes a ring magnet assembly 10, an iron ring 30, and a carrier 50. The carrier 50 is preferably a Mylar sheet. The ring magnet assembly 10 and the carrier 50 are bonded to opposite sides of the iron ring 30 by a first adhesive layer 20 and a second adhesive layer 40, respectively. The ring magnet assembly 10 and the iron ring 30 have matching clearance openings, that is, the ring magnet assembly 10 has a first clearance opening 1a, and the iron ring 30 has a second clearance opening 3a. When this ring-shaped Helbeck strong magnetic module wireless charging component is applied to a mobile phone or a mobile phone holder, the existence of the clearance openings facilitates the layout of the mobile phone or the mobile phone holder (such as the connection between components inside the ring structure and components outside the ring structure). The ring magnet assembly 10 includes a plurality of connected fan-shaped portions 100. In one embodiment of this utility model, the fan-shaped portion 100 has 1 There are 6 sector-shaped sections 100, each including a central magnet 101, and inner magnets 102 and outer magnets 103 respectively disposed on opposite sides of the central magnet 101 and abutting against the central magnet 101. The central magnet 101, inner magnet 102 and outer magnet 103 in each sector-shaped section 100 are relatively independent structures from the corresponding components in other sector-shaped sections 100. For the magnetic pole position of each magnet, the central magnet 101 is magnetically magnetized in a left-right mirror image, and the inner magnets 102 and outer magnets 103 are magnetically magnetized in an up-down mirror image, and the magnetic poles on the upper part of their respective bodies are opposite. Preferably, the magnetic pole of the central magnet 101 on the side closer to the inner magnet 102 is the N pole and the magnetic pole on the other side is the S pole. The magnetic pole of the upper part of the inner magnet 102 is the N pole and the lower part is the S pole. The magnetic pole of the upper part of the outer magnet 103 is the S pole and the lower part is the N pole.

[0024] In this invention, the ring magnet assembly 10, after being bonded to the iron sheet 30, forms a component for magnetic positioning that can be applied to structures such as mobile phones and mobile phone holders. The iron sheet 30, after being bonded to the carrier 50 (such as Mylar), facilitates its storage and retrieval; only the carrier 50 needs to be removed during use. For the structure composed of the ring magnet assembly 10 and the iron sheet 30, the magnetic field on the side of the ring magnet assembly 30 with the iron sheet 50 is shielded, while the side away from the iron sheet 50 can exert the maximum magnetic force of the magnet itself. The ring structure of the ring magnet assembly 10 allows it to generate a relatively uniform magnetic field on its surface. This uniform magnetic field is suitable for scenarios requiring high magnetic field stability (such as wireless charging for mobile phones). Moreover, compared to some irregularly shaped magnets, the ring structure design is more stable and less prone to deformation and damage. Long-term use can reduce electronic device malfunctions caused by magnet damage, improve the reliability and lifespan of electronic devices, and reduce operating costs.

[0025] In the annular magnet assembly 10 of this utility model, 16 sector-shaped parts are connected in series to form an annular structure with a clearance opening. The adsorption force data of the three tests conducted by the Instron tensile testing machine are 15.71N, 15.6N and 15.76N respectively, with an average value of 15.69N, which meets the adsorption force requirement.

[0026] The assembly method of each component in the wireless charging element of the ring-shaped Helbeck strong magnetic module can be as follows: First, multiple magnetic intermediate magnets 101 are glued to the iron sheet 30 to form a ring structure. Then, the non-magnetic inner magnets 102 and outer magnets 103 are respectively located on both sides of the intermediate magnets 101 and glued to the iron sheet 30, abutting against the intermediate magnets 101. This can effectively fix the Helbeck strong magnetic module. Then, the inner magnets 102 and outer magnets 103 are magnetized using a magnetizer. By positioning the inner magnets 102 and outer magnets 103 before magnetizing them, it is easy to assemble the ring magnet assembly 10 and the iron ring 30.

[0027] In other embodiments not shown, the magnet 101 may be configured such that the magnetic pole on the side of the middle magnet 101 closest to the inner magnet 102 is an N pole, and the magnetic pole on the other side is an S pole; the upper magnetic pole of the inner magnet 102 is an S pole, and the lower part is an N pole; the upper magnetic pole of the outer magnet 103 is an N pole, and the lower part is an S pole. Alternatively, the magnet 101 may be configured such that the magnetic pole on the side of the middle magnet 101 closest to the inner magnet 102 is an S pole, and the magnetic pole on the other side is an N pole; the upper magnetic pole of the inner magnet 102 is an N pole, and the lower part is an S pole; the upper magnetic pole of the outer magnet 103 is an S pole, and the lower part is an N pole. It may also be configured such that the magnet 101 on the side of the middle magnet 101 closest to the inner magnet 102 is an S pole, and the magnetic pole on the other side is an N pole; the upper magnetic pole of the inner magnet 102 is an S pole, and the lower part is an N pole; the upper magnetic pole of the outer magnet 103 is an N pole, and the lower part is an S pole. Different arrangements can be achieved by adjusting the positions of the magnetic poles on the middle magnet 101, the inner magnet 102, and the outer magnet 103. All of the above arrangements can achieve the strong magnetic effect of the Heilbeck-type structure.

[0028] Therefore, different methods offer flexibility in magnetization direction, allowing for design based on specific application needs and adaptability to different magnetic field requirements. For example, in some complex electromagnetic devices, magnetic fields in different directions are required to achieve specific functions, and multiple magnets can be combined together through flexible design to enhance adsorption force.

[0029] The structure of this invention also improves charging stability and efficiency. The compact shape of the ring magnet allows it to provide a strong magnetic field within a limited space. In some space-constrained equipment scenarios, the ring magnet can meet the demand for a strong magnetic field without occupying too much space. Because an inner magnet 102 and an outer magnet 103 are respectively arranged on the inner and outer sides of the central magnet 101 to abut against it, the symmetrical installation structure of the three and the uniform magnetic field can reduce noise caused by uneven magnetic field or magnet vibration, thus improving the quietness of the equipment operation.

[0030] In another embodiment of this utility model, the number of inner magnets 102 and outer magnets 103 is the same as the number of sector parts 100, and the multiple intermediate magnets 101 are integrally formed, that is, the multiple intermediate magnets 101 are integral and inseparable. Therefore, the multiple sector parts 100 cannot be independent of each other, but are connected by intermediate magnets with an integral connection structure and a ring structure, which can also form the above-mentioned ring magnet assembly 10.

[0031] In addition, the carrier 50 is provided with multiple positioning through holes 500, which facilitate the removal of the carrier 50.

[0032] The specific embodiments described herein are merely illustrative examples illustrating the spirit of this utility model. Those skilled in the art to which this utility model pertains may make various modifications or additions to the described specific embodiments or use similar methods to substitute them, without departing from the spirit of this utility model or exceeding the scope defined by the appended claims.

Claims

1. A toroidal Halbach high magnetic module wireless charging device, characterized in that, The application relates to a magnetic ring assembly, which comprises a ring-shaped magnet assembly, an iron ring and a carrier, the opposite sides of the iron ring are respectively bonded with the ring-shaped magnet assembly and the carrier through a first adhesive layer and a second adhesive layer, the ring-shaped magnet assembly and the iron ring are provided with matched accommodation openings, the ring-shaped magnet assembly comprises a plurality of connected sector parts, the sector part comprises a middle magnet, and an inner magnet and an outer magnet which are respectively arranged on the opposite sides of the middle magnet and abut against the middle magnet, the middle magnet is left-right mirror image magnetization, the inner magnet and the outer magnet are respectively up-down mirror image magnetization, and the magnetic poles on the upper bodies of the inner magnet and the outer magnet are opposite.

2. The annular Halbach strong magnetic module wireless charging element according to claim 1, characterized in that, The magnetic pole of the middle magnet close to the inner magnet is N pole, and the magnetic pole of the other side is S pole. 3.The wireless power transmitter of claim 1, wherein, The magnetic pole of the middle magnet far from the inner magnet is N pole, and the magnetic pole of the other side is S pole.

4. The toroidal Halbach array wireless charging device of claim 1 or 2 or 3, wherein, The magnetic pole of the upper part of the inner magnet is N pole, and the magnetic pole of the lower part is S pole; the magnetic pole of the upper part of the outer magnet is S pole, and the magnetic pole of the lower part is N pole.

5. The annular Halbach strong magnetic module wireless charging element according to claim 1 or 2 or 3, characterized in that, The magnetic pole of the upper part of the outer magnet is N pole, and the magnetic pole of the lower part is S pole; the magnetic pole of the upper part of the inner magnet is S pole, and the magnetic pole of the lower part is N pole.

6. The annular Halbach magnetic module wireless charging element of claim 1, wherein, The number of the middle magnet, the inner magnet and the outer magnet is same as the number of the sector part.

7. The annular Halbach magnetic module wireless charging element of claim 1, wherein, The number of the inner magnet and the outer magnet is same as the number of the sector part, and the plurality of middle magnets are integrally formed.

8. The annular Halbach magnetic module wireless charging element of claim 1 or 6 or 7, wherein, The number of the sector part is eight to thirty-two.

9. The annular Halbach strong magnetic module wireless charging element according to claim 1, characterized in that, The carrier is a Mylar sheet.

10. The annular Halbach magnetic module wireless charging element of claim 1 or 9, wherein, A plurality of positioning through holes are arranged on the carrier.

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