CN111819761A

CN111819761A - Wireless power receiving module and portable electronic device comprising same

Info

Publication number: CN111819761A
Application number: CN201980018016.6A
Authority: CN
Inventors: 张吉在
Original assignee: Amosense Co Ltd
Current assignee: Amosense Co Ltd
Priority date: 2018-03-14
Filing date: 2019-03-13
Publication date: 2020-10-23
Also published as: KR20190108461A; KR102154197B1; KR20190108463A

Abstract

The invention provides a wireless power receiving module. The wireless power receiving module of an embodiment of the present invention includes: a wireless power receiving antenna in which a conductive member having a square cross section is formed in a ring shape; and a shield spacer disposed on one surface of the wireless power receiving antenna to shield a magnetic field; wherein the antenna for wireless power reception is one surface directly attached to the shield gasket.

Description

Wireless power receiving module and portable electronic device comprising same

Technical Field

The present invention relates to a wireless power receiving module and a portable electronic device including the same.

Background

Recently, portable terminals can easily charge a built-in battery through a wireless charging function. Such wireless charging is realized by a wireless power receiving module built in the portable terminal and a wireless power transmitting module supplying power to the wireless power receiving module.

The wireless power receiving module includes a shield pad and a wireless power receiving antenna that is disposed on one surface of the shield pad and wirelessly receives power.

On the other hand, with the recent trend toward thinner and smaller portable terminals, it is necessary to make the wireless power receiving module built in the portable terminal very thin.

Accordingly, the antenna for wireless power reception is formed as an antenna pattern on one surface of the circuit board, and a thin wireless power reception module can be realized.

That is, the antenna for wireless power reception is formed as an antenna pattern by etching a Flexible Copper Clad Laminate (FCCL).

However, the flexible copper clad laminate is relatively expensive compared to other materials, and thus plays a role of a factor of increasing the production cost of the wireless power receiving module.

Disclosure of Invention

(problem to be solved)

The present invention has been made in view of the above problems, and it is an object of the present invention to provide a wireless power receiving module which can minimize the use of expensive FCCL and can be thin, and a portable electronic device including the same.

Another object of the present invention is to provide a wireless power receiving module and a portable electronic device including the same, wherein: an auxiliary shield gasket is laminated on one surface of the shield gasket so that the auxiliary shield gasket and the wireless power receiving antenna form a horizontal plane, and the thickness of the shield gasket is reduced while the required charging efficiency is satisfied.

(means for solving the problems)

In order to solve the above problem, the present invention provides a wireless power receiving module including: a wireless power receiving antenna in which a conductive member having a square cross section is formed in a ring shape; and a shield spacer disposed on one surface of the wireless power receiving antenna to shield a magnetic field; wherein the antenna for wireless power reception is one surface directly attached to the shield gasket.

In addition, the wireless power receiving module may include a connection member connecting both end portions of the wireless power receiving antenna to apply power to the wireless power receiving antenna. At this time, the connection member may be a thin flexible circuit board.

In the above case, the wireless power receiving module may include an accommodating groove recessed inward at one surface of the shield gasket; and further, increase in thickness due to the use of the connecting member can be prevented.

In addition, the conductive member may have a size of at least 2 times greater in width than in thickness, thereby making it possible to thin the wireless power receiving module.

In addition, the wireless power receiving module may further include an auxiliary shield gasket laminated on one surface of the shield gasket; the auxiliary shield gasket may be configured to be coplanar with the conductive member.

In the case as described above, the auxiliary shield gasket may include an inverse phase pattern portion formed in an inverse phase to the pattern portion of the wireless power receiving antenna. In this case, the reverse phase pattern portion may be disposed in a space formed between the pattern portions of the wireless power receiving antenna.

In one example, the auxiliary shield pad is formed by etching the reverse phase pattern portion, and is matched with the wireless power receiving antenna, so as to form the same surface with the wireless power receiving antenna.

Alternatively, the auxiliary shield gasket may be formed by applying magnetic powder in a slurry state to one surface of the shield gasket and then drying the magnetic powder, and the reverse phase pattern portion may be formed on the same surface as the wireless power receiving antenna.

On the other hand, the wireless power receiving module described above may be applied to a portable electronic device such as a cellular phone.

(Effect of the invention)

According to the invention, the antenna for wireless power reception is formed by the conductive part with the square section, so that the required thickness can be met, the production cost can be reduced, and a low-cost product can be realized.

In addition, the present invention laminates an auxiliary shield pad on one surface of the shield pad to form a horizontal plane with the wireless power receiving antenna, thereby realizing a very thin total thickness, for example, less than 0.2mm, and also satisfying the required charging efficiency.

Drawings

Fig. 1 is a diagram illustrating a wireless power receiving module according to an embodiment of the present invention;

FIG. 2 is an exploded view of FIG. 1;

FIG. 3 is a cross-sectional view taken along the line A-A of FIG. 1;

fig. 4 is a view showing a case where an insulating layer is formed on the surface of the conductive member in fig. 3;

fig. 5 is a diagram showing a case where the wireless power receiving antenna is formed in a quadrangular shape in fig. 1;

FIG. 6 is an exploded view of FIG. 5;

fig. 7 is a diagram showing a wireless power receiving module of another embodiment of the present invention;

FIG. 8 is an exploded view of FIG. 7;

FIG. 9 is a cross-sectional view taken along line B-B of FIG. 7;

fig. 10 is a view showing a case where an insulating layer is formed on the surface of the conductive member in fig. 9;

FIG. 11 is an exemplary diagram showing various relationships of the width and thickness of the conductive member in FIG. 9; and

fig. 12 is a diagram showing a portable electronic device to which a wireless power receiving module according to an embodiment of the present invention is applied.

Detailed Description

Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings so that those having ordinary knowledge in the art to which the present invention pertains can easily practice the present invention. The present invention may be embodied in various forms and is not limited to the embodiments described herein. In order to clearly explain the present invention, portions not related to the explanation are omitted in the drawings. The same reference numerals are given to the same or similar structures throughout the specification.

As shown in fig. 1 to 11, the wireless power receiving module 100, 100 ', 200' according to an embodiment of the present invention includes an antenna 110 for wireless power reception and

shielding pads

120, 220.

The wireless power receiving antenna 110 receives a wireless power signal transmitted from the wireless power transmission module, and thus can generate power required for the portable electronic device. That is, the wireless power receiving antenna 110 can perform the function of a receiving coil (Rxcoil) (secondary coil).

The wireless power receiving antenna 110 may be formed such that the conductive member a has a ring shape, and may be directly attached to one surface of the

shielding spacers

120 and 220 by an adhesive layer.

In this case, the antenna for wireless power reception may be punched out by pressing, and the conductive member a may have a quadrangular cross section.

As an example, the wireless power receiving antenna may be a punched body punched out from a plate-shaped spacer having a predetermined thickness. As a non-limiting example, the antenna for wireless power reception may be a punched body punched from a metal shim such as copper, but is not limited thereto, but may be used as an antenna, and may be used without limitation as long as it is a material that can be punched.

Accordingly, the wireless

power receiving modules

100, 100 ', 200, and 200' according to an embodiment of the present invention can realize the wireless power receiving antenna 110 without using an expensive FCCL, thereby reducing the manufacturing cost.

Meanwhile, in the present invention, the antenna for wireless power reception may be a punched body formed by punching from a plate-shaped spacer, and may omit a winding operation as compared with a conventional flat-type coil formed by winding a conductive member in one direction, thereby improving the convenience of operation.

Here, the wireless power receiving antenna may include a pattern portion 112, and a blank space portion 114 having a predetermined area may be formed in a central portion of the pattern portion 112. In addition, as shown in fig. 1 and 7, the pattern portion 112 of the antenna for wireless power reception may be circular, and as shown in fig. 5, the pattern portion 112 may be square.

In addition, as shown in fig. 4 and 10, the antenna for wireless power reception may include an insulating layer 116 formed in a predetermined thickness on the surface of the conductive member a. Accordingly, even if the

shield pad

120 or 220 or the

auxiliary shield pad

140 or 240 described later is made of a material containing a metal component, the conductive member a can be insulated from the

shield pad

120 or 220 by the insulating layer 116. Therefore, the conductive member a may prevent an electrical short from occurring with the

shielding gasket

120, 220 through the insulating layer 116.

On the other hand, the wireless power receiving antenna 110 is electrically connected to the outside at both ends, and can receive power from the outside. In this case, the wireless power receiving antenna 110 may be disposed such that both ends do not overlap the pattern portion 112.

That is, one of both ends of the wireless power receiving antenna may be located on the side of the blank space 114 of the pattern portion 112, and the remaining one may be located on the outer frame side of the pattern portion 112.

In the wireless

power receiving modules

100, 100 ', 200, and 200' according to an embodiment of the present invention, both ends of the wireless power receiving antenna 110 may be electrically connected to the outside through the separate connection member 130. Accordingly, the wireless power receiving antenna 110 receives power supplied from the outside through the connection unit 130.

For this purpose, the wireless power receiving antenna 110 may have both ends directly connected to the connection member 130, respectively, and the connection member 130 may be electrically connected to an external power supply. Meanwhile, the connection member 130 may be a thin plate-shaped member.

Specifically, the connection member 130 may be a circuit board having a circuit pattern formed on at least one surface thereof for electrical connection, and the circuit board may be a flexible circuit board.

The wireless power receiving antenna 110 may have both ends directly connected to one surface of the flexible circuit board, and the flexible circuit board may be electrically connected to an external power supply.

In the case as described above, the flexible circuit board may have a length equal to or relatively longer than a distance between both end portions of the pattern part 112. In addition, the flexible circuit board may be disposed between the pattern part 112 and the shielding

gaskets

120 and 220 to cross a portion of the pattern part 112.

Accordingly, the wireless power receiving antenna 110 has both ends located outside the pattern portion 112 and the blank space portion 114 of the pattern portion 112, respectively. Accordingly, the conductive member a constituting the wireless power receiving antenna 110 may be configured such that the entire lengths do not overlap or overlap, and further, an increase in thickness due to the overlap may be prevented, and power may be smoothly supplied through the connection member 130.

Meanwhile, the flexible circuit board may have a minimum area or length for connecting both end portions of the wireless power receiving antenna 110, thereby minimizing the use amount of the flexible circuit board and reducing the production cost.

At this time, the wireless power receiving module 100, 100 ', 200' according to an embodiment of the present invention may include a receiving groove 122 for receiving a thickness of the connection member 130, and the connection member 130 may be disposed in the receiving groove 122.

As an example, as shown in fig. 2, 6 and 8, the shielding

gaskets

120 and 220 may be formed with receiving grooves 122 in which the connection members 130 are recessed from the facing surfaces thereof. At this time, the receiving groove 122 may be formed to a depth substantially the same as the thickness of the connection member 130.

Accordingly, even if the connection member 130 is disposed between the wireless power receiving antenna 110 and the

shield pads

120 and 220, the thickness of the connection member 130 can be accommodated in the accommodation groove 122. Accordingly, the wireless power receiving module 100, 100 ', 200' according to an embodiment of the present invention may prevent an increase in thickness due to the connection member 130 even though the connection member 130 is used.

That is, the total thickness of the wireless

power receiving modules

100, 100 ', 200, and 200' according to an embodiment of the present invention may be a sum of the thicknesses of the wireless power receiving antenna 110 and the shielding

gaskets

120 and 220. Accordingly, the wireless power receiving module 100, 100 ', 200' according to an embodiment of the present invention may have the same or a relatively thinner thickness than the conventional wireless power receiving module in which the antenna 110 is formed as an antenna pattern on one surface of the flexible circuit board.

As an example, the total thickness of the wireless power receiving modules 100, 100 ', 200' may be less than 0.3mm, but is not limited thereto, and may have various thicknesses according to design conditions.

The shielding

gasket

120, 220 may be a plate-shaped gasket having a predetermined area. In this case, the wireless power receiving antenna 110 may be fixed to one surface of the

shield pads

120 and 220.

Here, the shielding

spacers

120 and 220 shield the magnetic field generated in the wireless power receiving antenna 110, thereby increasing the concentration of the magnetic field. Accordingly, the

shield gasket

120, 220 can improve the performance of the wireless power receiving antenna 110 operating in a predetermined frequency band.

For this purpose, the shielding

spacers

120 and 220 may be made of a magnetic material, and may shield the magnetic field generated from the wireless power receiving antenna 110.

As an example, the shielding

gaskets

120, 220 may use ferrite sheets, ribbon sheets including at least one of amorphous alloys and nanocrystalline alloys, or polymer sheets, etc. However, the material of the shielding

gaskets

120, 220 is not limited to the kind described, and it is indicated that any material having magnetism may be used.

Here, the ferrite sheet may be a sintered ferrite sheet, and may be a gasket including at least one of Ni — Zn ferrite and Mn — Zn ferrite. Further, the amorphous alloy or nanocrystalline alloy may comprise a 3-element alloy or a 5-element alloy, the 3-element alloy may comprise F e, Si, and B; the 5-element alloy may include Fe, Si, B, Cu, and Nb.

In addition, the shielding gasket 220 may be a multi-layer gasket in which a plurality of gaskets are stacked in multiple layers. As an example, as shown in fig. 4 and 10, the shielding gasket 220 may be a multi-layer gasket in which a plurality of strip pieces 221a including at least one of an amorphous alloy and a nano-grain alloy are laminated through an adhesive layer 221 b. As a non-limiting example, the shielding gasket 220 may be a multi-layered gasket in which the tape pieces 221a are stacked in 3 to 7 layers.

Further, the shielding

gaskets

120 and 220 may be decomposed into a plurality of minute fragments arranged so that adjacent minute fragments are insulated from each other entirely or partially, and each minute fragment may be irregularly and irregularly configured, thereby suppressing the generation of eddy current.

On the other hand, the conductive member a may be formed as a thin plate having a dimension in which the width W is relatively larger than the thickness t. That is, the conductive member a may have a size in which the width W is at least 2 times larger than the thickness t.

As an example, as shown in fig. 3, 6 and 9, the conductive member a may have a quadrangular sectional shape, and the thickness t of the conductive member a may be less than 0.15 mm.

Accordingly, since the wireless power receiving antenna 110 can have a very thin thickness, the wireless power receiving module 100, 100 ', 200' can be thin.

That is, the wireless power receiving module 100, 100 ', 200' according to an embodiment of the present invention may have a very thin thickness at the same level as that of a conventional wireless power receiving antenna in which the wireless power receiving antenna 110 is formed in an antenna pattern on one surface of a flexible circuit board.

Further, in comparison with the conventional art in which the antenna for wireless power reception is formed as an antenna pattern on one surface of the flexible circuit board, the wireless power reception module 100, 100 ', 200' according to an embodiment of the present invention does not require a flexible circuit board, and thus the width of the conductive member a can be increased by a thickness corresponding to the flexible circuit board.

Therefore, the conductive member a may have a relatively larger cross-sectional area than a conventional antenna pattern formed on one surface of a flexible circuit board, thereby reducing the total resistance and reducing the amount of heat generated during operation.

Accordingly, in the wireless power receiving module 100, 100 ', 200' according to an embodiment of the present invention, the loss due to resistance and heat generation can be reduced by increasing the cross-sectional area of the conductive member a, and the performance as an antenna can be improved.

On the other hand, as shown in fig. 7 to 11, the wireless power receiving module 200, 200' according to an embodiment of the present invention may further include an

auxiliary shielding gasket

140, 240 stacked on one surface of the shielding

gasket

120, 220.

The

auxiliary shield gasket

140, 240 as described above is made of a material having magnetic property, like the

shield gasket

120, 220, so that the performance of the

shield gasket

120, 220 can be improved.

In this case, the

auxiliary shield pads

140 and 240 may be disposed on the same plane as the conductive member a.

That is, the

auxiliary shield gasket

140 and 240 may be stacked on the same surface of the

shield gasket

120 and 220 together with the wireless power receiving antenna 110, and may be disposed so as not to overlap with the conductive member a constituting the wireless power receiving antenna 110. In addition, the

auxiliary shield gasket

140, 240 may have a thickness substantially the same as that of the conductive member a constituting the wireless power receiving antenna 110.

Accordingly, the wireless power receiving modules 200 and 200' of the present embodiment do not increase the total thickness, and the

auxiliary shielding gaskets

140 and 240 may be stacked on one surface of the shielding

gaskets

120 and 220.

Accordingly, the wireless power receiving module 200, 200 'of the present embodiment improves the performance of the shielding

gasket

120, 220 by the

auxiliary shielding gasket

140, 240, and thus the shielding

gasket

120, 220 having a thinner thickness can be formed when compared with the wireless power receiving module 100, 100' of the above-described embodiment.

Accordingly, the wireless power receiving modules 200 and 200 'of the present embodiment may further reduce the total thickness while satisfying the required performance, compared to the wireless power receiving modules 100 and 100' of the above embodiments.

In addition, in the case where the wireless power receiving modules 200 and 200 'of the present embodiment are implemented to have the same thickness as the wireless power receiving modules 100 and 100' of the above-described embodiments, the thickness of the conductive member a constituting the antenna 110 for wireless power reception may be increased around the thickness of the shielding

gaskets

120 and 220 reduced by using the

auxiliary shielding gaskets

140 and 240.

Accordingly, the conductive member a of the wireless power receiving module 200, 200 'of the present embodiment may have a relatively larger cross-sectional area than the conductive member a used in the wireless power receiving module 100, 100' of the above-described embodiment, and thus may more reduce the total resistance and more reduce the amount of heat generated during operation.

Accordingly, in the wireless power receiving modules 200 and 200' of the present embodiment, the loss due to the resistance and heat generation can be reduced by increasing the cross-sectional area of the conductive member a, and the performance as an antenna can be further improved.

As an example, the wireless power receiving module 200, 200' may implement the shielding

gasket

120, 220 with a thickness of less than 0.1mm, and may have a total thickness of less than 0.2 mm.

However, the total thickness of the wireless power receiving modules 200, 200' is not limited thereto, and it is suggested that appropriate changes may be made according to design conditions.

In the above case, as shown in fig. 11 (a) to (c), the

auxiliary shield gasket

140, 240 of the wireless power receiving module 200, 200' may have the same thickness as the

shield gasket

120, 220 or may have different thicknesses from each other. Meanwhile, the conductive member a may have the same size as the thickness and the width, or may have a size different from each other in the thickness and the width.

As a specific example, the

auxiliary shield gasket

140, 240 may include an inverted pattern portion 142 formed in an inverted state with respect to the pattern portion 112 of the wireless power receiving antenna 110; the reverse phase pattern portion 142 may be disposed in a space formed on the pattern portion 112 side of the wireless power receiving antenna. Here, the reverse phase pattern part 142 may have the same thickness as the conductive member a constituting the antenna 110 for wireless power reception.

Accordingly, in the present embodiment, in the case where the

auxiliary shield gasket

140, 240 is disposed on one surface of the

shield gasket

120, 220, the

auxiliary shield gasket

140, 240 may be formed on the same surface as the conductive member a.

Here, the reverse phase pattern portion 142 may be disposed in a space formed on a pattern portion side of the wireless power receiving antenna 110. In addition, the

auxiliary shield gasket

140, 240 may be configured to completely surround the wireless power receiving antenna 110. That is, the

auxiliary shield pads

140 and 240 may be disposed to surround both sides of the conductive member a constituting the wireless power receiving antenna. Accordingly, the

shield pads

120 and 220 and the

auxiliary shield pads

140 and 240 may be disposed on both side surfaces and a lower surface of the wireless power receiving antenna 110, except for an upper surface which is an exposed surface.

At this time, the reverse phase pattern part 142 formed at the

auxiliary shield pad

140, 240 may be formed in various ways.

As an example, the reverse phase pattern part 142 may be formed by etching. That is, in the case where the

auxiliary shield pad

140, 240 is made of a material containing a metal component, the reverse phase pattern portion 142 may be formed by etching.

Accordingly, when the

auxiliary shield gasket

140 or 240 is attached to one surface of the

shield gasket

120 or 220, the reverse phase pattern portion 142 can be inserted into a space formed on the pattern portion 112 side of the wireless power receiving antenna. In such a case, the

auxiliary shield gasket

140, 240 may be a strip including at least one of an amorphous alloy and a nanocrystalline alloy.

Alternatively, the

auxiliary shield gasket

140, 240 may be formed of magnetic powder in a slurry state. That is, the magnetic powder in the slurry state may be applied to one surface of the shielding

gasket

120 or 220 in a state where the wireless power receiving antenna 110 is attached to one surface of the shielding

gasket

120 or 220.

Accordingly, the magnetic powder in the slurry state can be filled in the space formed on the pattern portion 112 side of the wireless power receiving antenna and the empty space portion 114 of the wireless power receiving antenna. Then, the magnetic powder in the slurry state is dried, and the

auxiliary shield pads

140 and 240 may be formed on the same surface as the conductive member a. In such a case, the magnetic powder may be ferrite powder.

As another alternative, the reverse phase pattern part 142 may be formed by blanking. In this case, the

auxiliary shield gasket

140 and 240 may be punched out in a region corresponding to the pattern portion 112 of the wireless power receiving antenna 110. Accordingly, when the

auxiliary shield gasket

140 or 240 is attached to one surface of the

shield gasket

120 or 220, the reverse phase pattern portion 142 can be inserted into a space formed on the pattern portion 112 side of the wireless power receiving antenna. In this case, the material of the

auxiliary shield gasket

140 or 240 may be used without limitation as long as it is a material that can be punched out by a die.

On the other hand, as described above, as long as the

auxiliary shielding gasket

140, 240 is a material having magnetism capable of improving the performance of the shielding

gasket

120, 220, the material of the

auxiliary shielding gasket

140, 240 is used without limitation. Further, the

auxiliary shield gasket

140, 240 may be the same material as the

shield gasket

120, 220 or may be a different material.

As a non-limiting example, the

auxiliary shield gasket

140, 240 may use ferrite sheets, ribbon sheets including at least one of amorphous alloys and nanocrystalline alloys, or polymer sheets, etc.

In addition, the auxiliary shield gasket 240 may be a multi-layer gasket in which a plurality of gaskets are stacked, as in the shield gasket 220. As an example, as shown in fig. 10, the auxiliary shielding gasket 240 may be a multi-layered gasket in which a plurality of tape pieces 241a including at least one of an amorphous alloy and a nano-grain alloy are stacked in layers by an adhesive layer 241b, and the auxiliary shielding gasket 240 may be a multi-layered gasket in which the tape pieces 241a are stacked in 3 to 7 layers.

Further, the

auxiliary shield gasket

140, 240 may be decomposed into a plurality of minute fragments arranged such that adjacent minute fragments are insulated from each other entirely or partially, and each minute fragment may be irregularly and irregularly configured, thereby suppressing the generation of eddy current.

On the other hand, in the case where the

auxiliary shield pad

140, 240 contains a metal component, at least one of the

auxiliary shield pad

140, 240 and the wireless power receiving antenna 110 may include the insulating layer 116 formed in a predetermined thickness on the surface thereof.

As an example, as shown in fig. 10, the antenna 110 for wireless power reception may include an insulating layer 116 formed on a surface of the conductive member a with a predetermined thickness. Accordingly, even if the

auxiliary shield pads

140 and 240 are made of a material containing a metal component, the wireless power receiving antenna 110 can be insulated from the

auxiliary shield pads

140 and 240 by the insulating layer 116, and can be prevented from being short-circuited with the

auxiliary shield pads

140 and 240.

However, the formation position of the insulating layer 116 is not limited thereto, but the insulating layer 116 may also be formed to surround the surface of the reverse phase pattern portion 142 of the

auxiliary shield pad

140, 240. Meanwhile, the insulating layer 116 may be formed on both the reverse-phase pattern portion 142 of the

auxiliary shield pad

140, 240 and the surface of the conductive member a.

As shown in fig. 12, the wireless

power receiving modules

100, 100 ', 200, and 200' according to the above-described embodiment of the present invention may be provided on the inner surface of the rear case of the terminal body 10 or the rear cover 30 in the portable terminal.

As an example, the wireless power receiving module 100, 100 ', 200' may be attached to one surface of the rear case or the rear cover 30 of the terminal body 10 by an adhesive member 40.

Here, the adhesive member 40 may be a base material type in which an adhesive is applied to both surfaces of a base material, or may be a non-base material type.

The portable terminal may include a terminal body 10 and a rear case or cover 30, the terminal body 10 performing functions of the portable terminal, the rear case or cover 30 being disposed behind the terminal body, and the rear case or cover 30 may be detachably coupled to the terminal body 10 or may be formed integrally with the terminal body 10.

Meanwhile, there may be an area where the battery 20 and the memory chip can be mounted on the rear of the terminal body 10, and the rear case or the rear cover 30 may be detachably coupled to the terminal body 10 in order to facilitate replacement thereof and the beauty of the portable terminal. In such a case, the rear case or the rear cover 30 may be referred to as a battery cover.

Although one embodiment of the present invention has been described above, the concept of the present invention is not limited to the embodiments presented in the present specification, but those skilled in the art who understand the concept of the present invention can easily present other embodiments by adding, changing, deleting, adding members within the same concept, and this can also be considered to be included in the scope of the concept of the present invention.

Claims

1. A wireless power reception module, comprising:

a wireless power receiving antenna in which a conductive member having a square cross section is formed in a ring shape; and

a shield spacer disposed on one surface of the wireless power receiving antenna to shield a magnetic field;

wherein the antenna for wireless power reception is one surface directly attached to the shield gasket.

2. The wireless power receiving module according to claim 1,

the antenna for wireless power reception is punched out by pressing so that the conductive member has a quadrangular cross section.

3. The wireless power receiving module according to claim 1,

the conductive member includes an insulating layer formed at a surface with a predetermined thickness.

4. The wireless power receiving module according to claim 1,

the wireless power receiving module includes connection members electrically connected to both end portions of the wireless power receiving antenna, respectively;

the connecting member is disposed between the wireless power receiving antenna and the shield gasket.

5. The wireless power receiving module according to claim 4,

the connecting part is a circuit board of a thin plate.

6. The wireless power receiving module according to claim 4,

the shielding gasket comprises an accommodating groove formed by recessing one surface to the inner side;

the connecting member is mounted in the receiving groove.

7. The wireless power receiving module according to claim 4,

one of the two ends of the wireless power receiving antenna is disposed on the side of a blank space formed in the center of the pattern, and the other end is disposed on the outer frame side of the pattern.

8. The wireless power receiving module according to claim 1,

the conductive member has a dimension of a width at least 2 times greater than a thickness.

9. The wireless power receiving module according to claim 1,

the shielding gasket is one of a strip sheet, a ferrite sheet, and a polymer sheet comprising at least one of an amorphous alloy and a nanocrystalline alloy.

10. The wireless power receiving module according to claim 1,

the shielding gasket is a multilayer gasket in which a plurality of tape sheets are stacked in layers, wherein the tape sheets include at least one of an amorphous alloy and a nanocrystalline alloy.

11. The wireless power receiving module according to claim 1,

the wireless power receiving module further comprises an auxiliary shielding gasket;

the auxiliary shielding gasket is laminated on one surface of the shielding gasket;

the auxiliary shield gasket is disposed to be flush with one surface of the conductive member.

12. The wireless power receiving module according to claim 11,

the auxiliary shield pad includes an inverse pattern portion formed in an inverse phase to a pattern portion of the wireless power receiving antenna; the reverse phase pattern portion is disposed in a space formed between the pattern portions of the wireless power receiving antenna.

13. The wireless power receiving module according to claim 12,

the reverse-phase pattern portion is formed by etching.

14. The wireless power receiving module of claim 13,

at least one of the auxiliary shield pad and the wireless power receiving antenna includes an insulating layer formed with a predetermined thickness on a surface thereof.

15. The wireless power receiving module according to claim 12,

the auxiliary shield gasket is a strip comprising at least one of an amorphous alloy and a nanocrystalline alloy.

16. The wireless power receiving module according to claim 12,

the auxiliary shielding gasket is a multilayer gasket formed by laminating a plurality of strips, wherein the strips comprise at least one of amorphous alloy and nanocrystalline alloy.

17. The wireless power receiving module according to claim 11,

the auxiliary shielding gasket is formed by coating magnetic powder in a slurry state on one surface of the shielding gasket and then drying.

18. The wireless power receiving module of claim 17,

the magnetic powder is ferrite powder.

19. The wireless power receiving module according to claim 11,

the auxiliary shield gasket has the same thickness as the shield gasket.

20. A portable electronic device comprising the wireless power receiving module recited in any one of claims 1 to 19.