CN218976381U

CN218976381U - Wireless charging adsorption structure

Info

Publication number: CN218976381U
Application number: CN202223329584.6U
Authority: CN
Inventors: 罗杰
Original assignee: Guangzhou Beite Magnetic Co ltd
Current assignee: Guangzhou Beite Magnetic Co ltd
Priority date: 2022-12-12
Filing date: 2022-12-12
Publication date: 2023-05-05
Anticipated expiration: 2032-12-12

Abstract

The utility model relates to a wireless charging adsorption structure, which has the technical scheme that: comprising the following steps: a charging transmitting base and a charging receiving base; a plurality of magnet assemblies capable of supplying power are arranged on the charging emission base at intervals; an adsorption component which is correspondingly adapted to the magnet component to generate electromagnetic induction is arranged on the charging receiving base; the adsorption component is magnetically connected with the magnet component; the soft magnetic ferrite has the advantages of weakening the magnetic saturation tendency of the soft magnetic ferrite and being more reliable in adsorption.

Description

Wireless charging adsorption structure

Technical Field

The utility model relates to the technical field of wireless charging, in particular to a wireless charging adsorption structure.

Background

The wireless charging technology is generally applied to the field of electronic product charging, and with the development of technology, wireless charging of a mobile phone is more and more suitable for daily use demands of people due to the rapidity and convenience of wireless charging in operation.

The conventional wireless charging device generally uses a large-sized magnet, which has a strong magnetic field to generate enough adsorption force, however, an excessively strong static magnetic field can cause a soft magnetic ferrite core of a transmitting end to tend to a saturated working point to reduce transmission efficiency, and the transmitting end and a receiving end of the conventional wireless charging device generally have normal adsorption force only, and tangential force is generated by friction force, so that the wireless charging device is unreliable under the conditions of small interface friction coefficient and vibration, and therefore needs to be improved.

Disclosure of Invention

Aiming at the defects existing in the prior art, the utility model aims to provide a wireless charging adsorption structure which has the advantages of weakening the magnetic saturation tendency of soft magnetic ferrite and ensuring more reliable adsorption.

The technical aim of the utility model is realized by the following technical scheme: a wireless charging adsorption structure, comprising: a charging transmitting base and a charging receiving base; a plurality of magnet assemblies capable of supplying power are arranged on the charging emission base at intervals; an adsorption component which is correspondingly adapted to the magnet component to generate electromagnetic induction is arranged on the charging receiving base; the adsorption component is magnetically connected with the magnet component.

Optionally, the plurality of magnet assemblies are arranged in a circular ring shape on the charging emission base.

Optionally, the magnet assembly includes: a center permanent magnet, a first high magnetic conductive yoke and a second high magnetic conductive yoke for shielding a static magnetic field generated by the center permanent magnet; one end of the center permanent magnet is connected with the first high magnetic conductive iron yoke, and the other end of the center permanent magnet is connected with the second high magnetic conductive iron yoke.

Optionally, the center permanent magnet is neodymium iron boron and/or samarium cobalt.

Optionally, the first high magnetic conductive iron yoke is low carbon steel and/or electrical pure iron.

Optionally, the second high magnetic conductive iron yoke is low carbon steel and/or electrical pure iron.

Optionally, the charging receiving base includes: a flexible substrate; a plurality of capsule-shaped cavities are arranged on the flexible matrix; the adsorption component is movably arranged in the capsule-shaped cavity.

Optionally, the adsorption assembly includes: a magnetic fluid correspondingly adapted to the center permanent magnet to generate electromagnetic induction; the magnetic fluid is movably arranged in the capsule-shaped cavity.

Optionally, the plurality of capsule-shaped cavities are arranged on the flexible substrate in a ring shape; a sealing layer capable of preventing the magnetic fluid from separating from the capsule-shaped cavity is arranged on the outer side of the capsule-shaped cavity.

Optionally, the flexible substrate is a rubber substrate and/or a silica gel substrate.

In summary, the utility model has the following beneficial effects:

1. the magnet assembly of traditional wireless charging device generally adopts the glued equipment of fritter magnet, and a plurality of magnet assembly intervals of this application set up need not the equipment on charging the emission base, have not only reduced the processing degree of difficulty and processing cost, provide stable normal adsorption force when receiving base magnetism adsorbs for charging moreover, make both magnetism more reliable and stable when connecting.

2. The two sides of the center permanent magnet of the transmitting end magnet assembly are provided with the high-permeability iron yokes, and static magnetic fields generated by the center permanent magnet can be shielded by the high-permeability iron yokes, so that the influence of the magnetic fields on the soft magnetic ferrite core of the charger is reduced.

3. The receiving end of the magnetic fluid type magnetic coupling device is in a magnetic fluid form, when the receiving end is magnetically connected with the magnet assembly, the magnetic fluid deforms, solidifies and wraps the magnet assembly, so that tangential adsorption force is generated, the transmitting end and the receiving end have normal mechanical constraint and tangential mechanical constraint at the same time, and the connection is more reliable.

Drawings

FIG. 1 is a schematic diagram of a prior art wireless charging device;

FIG. 2 is a schematic view of a magnet assembly according to the present utility model;

fig. 3 is a schematic view of a structure of a charging receiving base in the present utility model;

FIG. 4 is a schematic diagram of the operation of the magnetic fluid of the present utility model.

In the figure: 1. a charging receiving base; 2. a magnet assembly; 21. a center permanent magnet; 22. a first high permeability yoke; 23. a second high magnetic permeability yoke; 3. a capsule-like cavity; 4. magnetic fluid.

Detailed Description

In order that the objects, features and advantages of the utility model will be readily understood, a more particular description of the utility model will be rendered by reference to specific embodiments thereof which are illustrated in the appended drawings. Several embodiments of the utility model are presented in the figures. This utility model may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein.

In the present utility model, unless explicitly specified and limited otherwise, the terms "mounted," "connected," "secured," and the like are to be construed broadly and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present utility model can be understood by those of ordinary skill in the art according to the specific circumstances. The terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include one or more such feature.

In the present utility model, unless expressly stated or limited otherwise, a first feature "above" or "below" a second feature may include both the first and second features being in direct contact, as well as the first and second features not being in direct contact but being in contact with each other through additional features therebetween. Moreover, a first feature being "above," "over" and "on" a second feature includes the first feature being directly above and obliquely above the second feature, or simply indicating that the first feature is higher in level than the second feature. The first feature being "under", "below" and "beneath" the second feature includes the first feature being directly under and obliquely below the second feature, or simply means that the first feature is less level than the second feature. The terms "vertical," "horizontal," "left," "right," "up," "down," and the like are used for descriptive purposes only and are not to indicate or imply that the devices or elements being referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore should not be construed as limiting the utility model.

The present utility model will be described in detail below with reference to the accompanying drawings and examples.

As shown in fig. 2 to 4, the present utility model provides a wireless charging adsorption structure, comprising: a charging transmitting base and a charging receiving base 1; a plurality of magnet assemblies 2 capable of supplying power are arranged on the charging emission base at intervals; an adsorption component which is correspondingly adapted to the magnet component 2 to generate electromagnetic induction is arranged on the charging receiving base 1; the adsorption component is magnetically connected with the magnet component 2.

The magnet assembly of the traditional wireless charging device is generally assembled by cementing small magnets, planar secondary magnetization is carried out, a shielding body (see figure 1) is not arranged between the magnets and the soft magnetic ferrite, and the processing is difficult and time-consuming and has high processing cost; in this embodiment, charging emission base and magnet subassembly 2 are equivalent to the transmitting end of structure, and charging receiving base 1 and adsorption component are equivalent to the receiving end of structure, and a plurality of magnet subassemblies 2 interval sets up and need not the equipment on charging emission base, has not only reduced the processing degree of difficulty and processing cost, provides stable normal adsorption force when receiving base 1 magnetism adsorbs for charging moreover, makes more reliable and stable when transmitting end and receiving end magnetism connect.

Further, the plurality of magnet assemblies 2 are arranged in a circular ring shape on the charging emission base.

In this embodiment, the plurality of magnet assemblies 2 are arranged in a circular ring shape on the charging transmitting base, the circular ring-shaped arrangement mode of the magnet assemblies is correspondingly adapted to the arrangement mode of the adsorption assemblies on the charging receiving base 1 (see fig. 2), and the circular ring-shaped magnetic adsorption mode can enable the magnetic connection between the transmitting end and the receiving end of the structure to be more stable.

Further, the magnet assembly 2 includes: a center permanent magnet 21, and a first high permeability yoke 22 and a second high permeability yoke 23 for shielding a static magnetic field generated by the center permanent magnet 21; one end of the center permanent magnet 21 is connected to the first high magnetic conductive yoke 22, and the other end of the center permanent magnet 21 is connected to the second high magnetic conductive yoke 23.

The magnet of the traditional wireless charging device generates a stronger magnetic field so as to generate enough adsorption force, but the too strong static magnetic field can lead the soft magnetic ferrite core of the transmitting end to trend to a saturated working point, and the magnetic leakage is large due to no shielding between the magnet of the transmitting end and the soft magnetic ferrite core, thereby reducing the transmission efficiency and generating the problems of heating and the like;

in this embodiment, the two sides of the center permanent magnet 21 are respectively connected to the first high magnetic yoke 22 and the second high magnetic yoke 23, and since the center permanent magnet 21 has a static magnetic field, the first high magnetic yoke 22 and the second high magnetic yoke 23 at the two ends form a sandwich shielding structure (see fig. 2) that can weaken the magnetic saturation tendency of the soft magnetic ferrite and shield the static magnetic field, thereby reducing the influence of the magnetic field on the soft magnetic ferrite core of the charger, and simultaneously, can maximize the concentration of the magnetic flux in the adsorption working area, and further improve the structural adsorption force.

Further, the center permanent magnet 21 is neodymium iron boron and/or samarium cobalt.

In this embodiment, the center permanent magnet 21 may be made of neodymium-iron-boron material or samarium-cobalt material, and neodymium-iron-boron has the advantages of high remanence, high coercivity, high magnetic energy product, high cost performance, easy processing, and the like, and samarium-cobalt has the advantages of high heat resistance, low temperature resistance, corrosion resistance, high demagnetizing resistance, and the like.

Further, the first high permeability yoke 22 is low carbon steel and/or electrically pure iron. The second high permeability yoke 23 is low carbon steel and/or electrically pure iron.

In this embodiment, the first high magnetic conductive yoke 22 and the second high magnetic conductive yoke 23 may be made of low carbon steel or electrical pure iron, and the low carbon steel has the advantages of stable quality, convenient processing and forging, light weight, etc., and the electrical pure iron has the advantages of good electromagnetic performance, low coercive force, stable magnetism, etc.

Further, the charge receiving base 1 includes: a flexible substrate; a plurality of capsule-shaped cavities 3 are arranged on the flexible matrix; the adsorption component is movably arranged in the capsule-shaped cavity 3.

In this embodiment, a plurality of capsule-shaped cavities 3 are formed on the flexible substrate, the number of the capsule-shaped cavities 3 is correspondingly adapted to the number of the magnet assemblies 2 (see fig. 3, because the capsule-shaped cavities 3 are disposed inside the charging receiving base 1 and are indicated by dotted lines), the adsorption assemblies are disposed in the capsule-shaped cavities 3, and the capsule-shaped cavities 3 are used for limiting the working positions of the adsorption assemblies on the charging receiving base 1, so that the adsorption assemblies cannot be separated from the charging receiving base 1 during working.

Further, the adsorption assembly includes: a magnetic fluid 4 adapted to correspond to the central permanent magnet 21 to generate electromagnetic induction; the magnetic fluid 4 is movably arranged in the capsule-shaped cavity 3.

In this embodiment, the adsorption component adopts the magnetic fluid 4, the magnetic fluid 4 can be correspondingly adapted to the center permanent magnet 21 to generate electromagnetic induction, and the working principle of the magnetic fluid 4 is as follows:

(1) when the structure receiving end is separated from the transmitting end, the magnetic fluid 4 is in a semi-fluid state (as shown in the lower part of the reference numeral 4 in fig. 4);

(2) when the receiving end of the structure is contacted with the transmitting end, the magnetic fluid 4 deforms and solidifies and wraps the magnet assembly 2 (as shown in the upper part of the reference numeral 4 in fig. 4), so that tangential adsorption force is generated (the receiving end and the transmitting end cannot rotate continuously after the magnetic fluid 4 wraps the magnet assembly 2), so that the transmitting end and the receiving end have normal mechanical constraint and tangential mechanical constraint at the same time, are stable in connection, and are more reliable in adsorption under the condition that the structure vibrates; after the receiving end and the transmitting end are separated, the magnetic fluid 4 is restored to a semi-fluid state due to the weakening of the magnetic field;

in addition, the magnetic fluid 4 has the advantages of high resistivity, capability of effectively reducing the eddy current loss of the structure to improve the transmission efficiency and the like, and the use experience is effectively improved.

Further, the plurality of capsule-shaped cavities 3 are arranged on the flexible matrix in a circular ring shape; a sealing layer capable of preventing the magnetic fluid 4 from separating from the capsule-shaped cavity 3 is arranged on the outer side of the capsule-shaped cavity 3.

In this embodiment, the capsule-shaped cavity 3 is disposed on the flexible substrate in a ring shape, and is correspondingly adapted to the manner in which the magnet assembly 2 is disposed on the charging emission base (see fig. 3), and the magnetic connection between the emission end and the receiving end of the structure can be more stable by the manner of ring-shaped magnetic adsorption;

the outside of the capsule-shaped cavity 3 is provided with a sealing layer, and the sealing layer can limit the moving range of the magnetic fluid 4 in the capsule-shaped cavity 3, so that the magnetic fluid 4 is prevented from being separated from the capsule-shaped cavity 3, and the use stability of the equipment is improved.

Further, the flexible matrix is a rubber matrix and/or a silica gel matrix.

In this embodiment, the flexible substrate is a rubber substrate or a silica gel substrate, and is connected with the device in a protective sleeve manner, so that the rigid impact of the flexible substrate on the electronic product can be reduced.

The wireless charging adsorption structure has the advantages of weakening the magnetic saturation tendency of the soft magnetic ferrite and being more reliable in adsorption.

The above description is only a preferred embodiment of the present utility model, and the protection scope of the present utility model is not limited to the above examples, and all technical solutions belonging to the concept of the present utility model belong to the protection scope of the present utility model. It should be noted that modifications and adaptations to the present utility model may occur to one skilled in the art without departing from the principles of the present utility model and are intended to be within the scope of the present utility model.

Claims

1. A wireless charging adsorption structure, comprising: a charging transmitting base and a charging receiving base; a plurality of magnet assemblies capable of supplying power are arranged on the charging emission base at intervals; an adsorption component which is correspondingly adapted to the magnet component to generate electromagnetic induction is arranged on the charging receiving base; the adsorption component is magnetically connected with the magnet component.

2. The wireless charging adsorption structure of claim 1, wherein a plurality of the magnet assemblies are arranged in a circular ring shape on the charging emission base.

3. The wireless charging attraction structure of claim 2, wherein the magnet assembly comprises: a center permanent magnet, a first high magnetic conductive yoke and a second high magnetic conductive yoke for shielding a static magnetic field generated by the center permanent magnet; one end of the center permanent magnet is connected with the first high magnetic conductive iron yoke, and the other end of the center permanent magnet is connected with the second high magnetic conductive iron yoke.

4. A wireless charging adsorption structure according to claim 3 wherein the central permanent magnet is neodymium iron boron and/or samarium cobalt.

5. The wireless charging adsorption structure of claim 4, wherein the first high permeability yoke is low carbon steel and/or electrical pure iron.

6. The wireless charging adsorption structure of claim 5, wherein the second high permeability yoke is low carbon steel and/or electrical pure iron.

7. The wireless charging adsorbing structure according to any one of claims 3 to 6, wherein the charging receiving base includes: a flexible substrate; a plurality of capsule-shaped cavities are arranged on the flexible matrix; the adsorption component is movably arranged in the capsule-shaped cavity.

8. The wireless charging adsorption structure of claim 7, wherein the adsorption assembly comprises: a magnetic fluid correspondingly adapted to the center permanent magnet to generate electromagnetic induction; the magnetic fluid is movably arranged in the capsule-shaped cavity.

9. The wireless charging adsorption structure of claim 8, wherein a plurality of the capsule-like cavities are arranged in a circular ring shape on the flexible substrate; a sealing layer capable of preventing the magnetic fluid from separating from the capsule-shaped cavity is arranged on the outer side of the capsule-shaped cavity.

10. The wireless charging adsorption structure of claim 9, wherein the flexible substrate is a rubber substrate and/or a silicone substrate.