CN212695774U

CN212695774U - Take EMC shielded wireless charger coil

Info

Publication number: CN212695774U
Application number: CN202020941640.3U
Authority: CN
Inventors: 张慧峰; 金东旭
Original assignee: Huizhou Yulin Technology Co ltd
Current assignee: Huizhou Yulin Technology Co ltd
Priority date: 2020-05-28
Filing date: 2020-05-28
Publication date: 2021-03-12
Anticipated expiration: 2030-05-28

Abstract

The utility model discloses a take EMC shielded wireless charger coil, including PCB board and the coil of etching on the PCB board. In addition, still include the EMC shielding layer of setting on the PCB board, this EMC shielding layer is non-closed annular pectination shielded line. The utility model discloses a take EMC shielded wireless charger coil through direct etching coil on the PCB board, has not only solved the great problem of traditional coil thickness, has also solved the not high problem of traditional coil wire winding precision simultaneously, reduces manual operation, reduce cost. In addition, the EMC shielding layer is designed by adopting a non-closed annular comb-shaped shielding line, so that the radiation energy generated by the coil can be absorbed.

Description

Take EMC shielded wireless charger coil

Technical Field

The utility model relates to a wireless technical field that charges, concretely relates to take EMC shielded wireless charger coil.

Background

The coil used by the existing wireless charging product is a coil formed by winding an enameled wire, and then the coil is adhered to a partition ceramic chip. Such coils are not only relatively expensive, but also have a relatively large overall coil thickness. In addition, the existing method for solving the problem of radiation energy interference on the coil is generally to add a shielding plate, and the method has low integration level and high cost.

Therefore, how to provide a low-cost, simple and ultra-thin wireless charging coil is a technical problem to be solved urgently by those skilled in the art.

SUMMERY OF THE UTILITY MODEL

In order to overcome the defects in the prior art, the utility model provides a take EMC shielded wireless charger coil.

The utility model discloses a solve the technical scheme that its problem adopted and be:

a wireless charger coil comprises a PCB board and a coil etched on the PCB board;

still including setting up EMC shielding layer on the PCB board, EMC shielding layer is non-closed annular pectination shielded line.

Therefore, the utility model discloses a wireless charger coil through direct etching coil on the PCB board, has not only solved the great problem of traditional coil thickness, has also solved the not high problem of traditional coil wire winding precision simultaneously, reduces manual operation, reduce cost. In addition, the EMC shielding layer is designed by adopting a non-closed annular comb-shaped shielding line, so that the radiation energy generated by the coil can be absorbed.

Further, the EMC shielding layer and the PCB are integrally formed.

From this, with EMC shielding layer and PCB board integrated into one piece for the integrated level is higher, and then has improved shielding performance.

Further, the EMC shielding layer is one or more layers.

Further, the EMC shielding layer is arranged on the upper surface of the PCB.

Further, still include the magnetism screen piece of setting on the PCB board.

Therefore, the magnetic shielding sheet can prevent the electron eddy current generated by the coil from meeting the metal to generate skin effect.

Furthermore, the magnetism isolating sheet is adhered to the lower surface of the PCB.

Furthermore, the length and the width of the magnetism isolating sheet are both more than or equal to those of the PCB.

Further, the thickness of the magnetism isolating sheet is more than or equal to 1 mm.

To sum up, the utility model provides a take wireless charger coil of EMC shielding's beneficial effect as follows:

1. through direct etching coil on the PCB board, not only solved the great problem of traditional coil thickness, also solved the not high problem of traditional coil wire winding precision simultaneously, reduce manual operation, reduce cost. In addition, the EMC shielding layer is designed by adopting a non-closed annular comb-shaped shielding line, so that the radiation energy generated by the coil can be absorbed.

2. With EMC shielding layer and PCB board integrated into one piece for the integrated level is higher, and then has improved shielding performance.

Drawings

Fig. 1 is a schematic structural view of an EMC shielding layer in the wireless charger coil of the present invention;

fig. 2 is a schematic structural view of the upper surface of the PCB in the wireless charger coil of the present invention;

fig. 3 is a schematic structural view of the lower surface of the PCB in the wireless charger coil of the present invention;

fig. 4 is a side view of the wireless charger coil of the present invention.

Wherein the reference numerals have the following meanings:

1. a PCB board; 21. a first coil; 22. a second coil; 23. a third coil; 3. a magnetic shield sheet; 4. an EMC shielding layer.

Detailed Description

For better understanding and implementation, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention.

Unless defined otherwise, 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 invention belongs. The terminology used in the description of the invention herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention.

Referring to fig. 1-4, the utility model provides a take wireless charger coil of EMC shielding, including PCB board 1 and the coil of etching on PCB board 1. Specifically, the coil is a three-coil structure, a first coil 21 of which is disposed on the upper surface of the PCB board 1, and a second coil 22 and a third coil 23 of which are disposed on the lower surface of the PCB board 1.

In this embodiment, the coil is a copper coil. The coil must be arranged in the form of a coil in the field of wireless charging, the shape of which is substantially circular. Of course, in other embodiments, the coil may have various shapes such as a rectangular shape. In addition, parameters such as the number of turns and the line width of the coil need to be set in specific use occasions.

Therefore, the coil is directly etched on the PCB board 1, the problem that the thickness of the traditional coil is large is solved, the problem that the winding precision of the traditional coil is not high is solved, manual operation is reduced, and cost is reduced.

Referring to fig. 1, the printed circuit board further includes an EMC shielding layer 4 disposed on the PCB board 1, wherein the EMC shielding layer 4 is a non-closed annular comb-shaped shielding circuit.

In this embodiment, the EMC shielding layer 4 is a layer and is integrally formed on the upper surface of the PCB board 1. Of course, in other embodiments, the EMC shielding layer 4 may also be a multilayer. In addition, the EMC shielding layer 4 may also be disposed on the PCB 1 by other methods such as pasting, and is not limited herein.

Referring to fig. 4, the wireless charger coil further includes a magnetic shielding sheet 3, and the magnetic shielding sheet 3 is adhered to the lower surface of the PCB board 1.

In this embodiment, the length and the width of the magnetism isolating sheet 3 are both greater than those of the PCB board 1, and the thickness of the magnetism isolating sheet 3 is also the same as that of the PCB board 1, and both are 1 mm.

Thus, the magnetic shield 3 prevents the eddy current generated by the coil from contacting the metal to generate skin effect.

The technical means disclosed by the scheme of the present invention is not limited to the technical means disclosed by the above embodiments, but also includes the technical scheme formed by the arbitrary combination of the above technical features. It should be noted that, for those skilled in the art, without departing from the principle of the present invention, several improvements and modifications can be made, and these improvements and modifications are also considered as the protection scope of the present invention.

Claims

1. The utility model provides a take EMC shielded wireless charger coil which characterized in that: the coil comprises a PCB (1) and a coil etched on the PCB (1);

still including setting up EMC shielding layer (4) on PCB board (1), EMC shielding layer (4) are non-closed annular pectination shielded line.

2. Wireless charger coil according to claim 1, characterized in that the EMC shielding layer (4) is integrally formed with the PCB board (1).

3. Wireless charger coil according to claim 2, characterized in that the EMC shielding layer (4) is one or more layers.

4. Wireless charger coil according to claim 3, characterized in that the EMC shielding layer (4) is arranged on the upper surface of the PCB board (1).

5. The wireless charger coil as claimed in claim 1, further comprising a magnetic shielding sheet (3) disposed on the PCB board (1).

6. The wireless charger coil as claimed in claim 5, wherein the magnetic shielding sheet (3) is adhered to the lower surface of the PCB (1).

7. The wireless charger coil as claimed in claim 5, wherein the length and width of the magnetism shielding sheet (3) are both greater than or equal to the length and width of the PCB (1).

8. A wireless charger coil according to claim 5, characterized in that the thickness of the magnetism-isolating sheet (3) is 1mm or more.