CN105896682A

CN105896682A - Flat coil, fabrication method thereof and flat coil wireless charger

Info

Publication number: CN105896682A
Application number: CN201610420891.5A
Authority: CN
Inventors: 王斌
Original assignee: WUXI JINGLEI ELECTRONIC CO Ltd
Current assignee: WUXI JINGLEI ELECTRONIC CO Ltd
Priority date: 2016-06-13
Filing date: 2016-06-13
Publication date: 2016-08-24

Abstract

The invention relates to a flat coil. The flat coil is a single-layer coil formed by winding a single self-adhered enameled wire form inside to outside, two wiring ends are led out of the single-layer coil, one side of the single-layer coil is in fixed contact with a magnetic shielding plate, the induction intensity of the flat coil is utilized to the greatest extent, the loss is relatively low, particularly, the flat coil is relatively high in environmental adaptability and stable is performance, and the normal operation of an electromagnetic interference device is prevented. The invention also provides a fabrication method of the flat coil and a flat coil wireless charger employing the flat coil.

Description

A kind of flatwise coil, preparation method and flatwise coil wireless charger

Technical field

The present invention relates to coil, particularly relate to a kind of flatwise coil, preparation method and flatwise coil wireless charging Device.

Background technology

Wireless charging receiver is mainly coil composition, the quality of the fine or not direct relation product of coil quality. Therefore produce coil be key technology, carry the most for convenience, wireless charging receiver to miniaturization, Product minimizes, and certainly will need coil flaky process, in order to would be integrated in product small space, single During the big electric current of ultra-thin coil inductance the most overheated, limit power output, affect wireless charging receiver Exhibition.

Summary of the invention

The applicant, for disadvantage mentioned above, has carried out Improvement, it is provided that a kind of magnetic induction intensity is big, performance Stablize flatwise coil, preparation method and apply the wireless charger of described flatwise coil.

The technical solution adopted in the present invention is as follows:

A kind of flatwise coil, described flatwise coil is by single self-adhesive enameled wire from-inner-to-outer coiling single-layer wire Circle, described single layer coil two terminals of extraction, the fixing contact in described single-layer wire ring layer side is at magnetic shield panel On.

Further improvement as technique scheme:

Described self-adhesive enameled wire uses the high-temperature resistant self-adhesive enamel-covered wire of more than high temperature resistant grade H.

Described magnetic shield panel is that ferrite is made.

A kind of preparation method of flatwise coil, its making step includes:

(1) by automatic coil winding machine, single self-adhesive enameled wire is coiled into single layer coil, passes through hot blast simultaneously Platform makes wire winding tool heat, and makes single self-adhesive enameled wire self-adhesion be molded；

(2) single layer coil is taken off by the demoulding；

(3) single layer coil is fixed on magnetic shield panel.

A kind of flatwise coil wireless charger, including charger and recipient, described charger includes by leading Power supply, rectification circuit, drive circuit and the flatwise coil that line is sequentially connected with, charger also set up auxiliary circuit, Control circuit and testing circuit, described recipient includes flatwise coil, the rectified current being sequentially connected with by wire Road and converter.

Beneficial effects of the present invention is as follows: (1) described single layer coil is tied with ferrite magnetic barricade maximum area Closing, application ferrite distinctive saturation magnetic induction Bs, cross section reduce greatly ferritic magnetic conductivity, it is possible to decrease The impact of bias current, reaches magnetic induction intensity maximum and utilizes；(2) the peculiar low magnetic conduction of flat magnetic core is applied Rate, has loss ratio relatively low, and particularly environmental suitability is relatively good, and stable performance prevents electromagnetic interference The normal operation of device.

Accompanying drawing explanation

The structural representation of the flatwise coil that Fig. 1 provides for the present invention.

The structural representation of the flatwise coil wireless charger that Fig. 2 provides for the present invention.

In figure 1, single layer coil；2, terminals；3, magnetic shield panel；4, charger；41, drive circuit； 42, auxiliary circuit；43, control circuit；44, testing circuit；5, recipient；51, converter；6、 Rectification circuit.

Detailed description of the invention

Below in conjunction with the accompanying drawings, the detailed description of the invention of the present invention is described.

As it is shown in figure 1, the flatwise coil of the present embodiment, flatwise coil be by single self-adhesive enameled wire from interior and Outer winding of single-layer-coil 1, single layer coil 1 draws two terminals 2, and the maximum one side of single layer coil 1 is solid Fixed contact is on ferrite magnetic barricade 3, and described self-adhesive enameled wire uses the resistance to height of more than high temperature resistant grade H Temperature self-adhesive enameled wire.

The preparation method of the flatwise coil of the present embodiment, its making step includes:

(1) by automatic coil winding machine, single self-adhesive enameled wire is coiled into single layer coil 1, simultaneously by heat Wind platform makes wire winding tool heat, and carries out winding operation simultaneously, and coiling just can make coil certainly in terminating the 2-3 second Sticking into type, one coil whenabouts of coiling was at about 15 seconds, and every coil winding machine one day can coiling 2000 Above single layer coil；

(2) single layer coil 1 is taken off by the demoulding；

(3) single layer coil 1 is fixed on ferrite magnetic barricade 3.

As shown in Figure 2.The flatwise coil wireless charger of the present embodiment, including charger 4 and recipient 5, Described charger 4 includes rectification circuit 6, drive circuit 41 and the flatwise coil being sequentially connected with by wire, Described rectification circuit 6 front end connects power supply, and charger also sets up auxiliary circuit 42, control circuit 43 and inspection Slowdown monitoring circuit 44, is used for detecting control charging device, and recipient 5 includes the flat wire being sequentially connected with by wire Circle, rectification circuit 6 and converter 51, described converter rear end connects charging device.

Above description is explanation of the invention, is not the restriction to invention, and limited range of the present invention is joined Seeing claim, in the case of the basic structure of the present invention, the present invention can make any type of Amendment.

Claims

1. a flatwise coil, it is characterised in that: described flatwise coil is by single self-adhesive enameled wire certainly Interior and outer winding of single-layer-coil (1), two terminals (2) drawn by described single layer coil (1), described The fixing contact of the maximum one side of single layer coil (1) is on magnetic shield panel (3).

2. flatwise coil as claimed in claim 1, it is characterised in that: described self-adhesive enameled wire uses High-temperature resistant self-adhesive enamel-covered wire more than high temperature resistant grade H.

3. flatwise coil as claimed in claim 1, it is characterised in that: described magnetic shield panel (3) is Ferrite is made.

4. a preparation method for flatwise coil, its making step includes:

(1) by automatic coil winding machine, single self-adhesive enameled wire is coiled into single layer coil (1), simultaneously by heat Wind platform makes wire winding tool heat, and makes single self-adhesive enameled wire self-adhesion be molded；

(2) single layer coil (1) is taken off by the demoulding；

(3) single layer coil (1) is fixed on ferrite magnetic barricade (3).

5. a flatwise coil wireless charger, it is characterised in that: include charger (4) and recipient (5), Rectification circuit (6) that described charger (4) includes being sequentially connected with by wire, drive circuit (41) and Flatwise coil, charger also sets up auxiliary circuit (42), control circuit (43) and testing circuit (44), Described recipient (5) includes flatwise coil, rectification circuit (6) and the converter being sequentially connected with by wire (51)。