KR101899476B1 - Wireless charging module and mobile terminal with the same - Google Patents

Wireless charging module and mobile terminal with the same Download PDF

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Publication number
KR101899476B1
KR101899476B1 KR1020150146831A KR20150146831A KR101899476B1 KR 101899476 B1 KR101899476 B1 KR 101899476B1 KR 1020150146831 A KR1020150146831 A KR 1020150146831A KR 20150146831 A KR20150146831 A KR 20150146831A KR 101899476 B1 KR101899476 B1 KR 101899476B1
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KR
South Korea
Prior art keywords
wireless charging
film
charging module
electrically connected
connection
Prior art date
Application number
KR1020150146831A
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Korean (ko)
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KR20170046453A (en
Inventor
성원모
양일규
Original Assignee
주식회사 이엠따블유
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Priority to KR1020150146831A priority Critical patent/KR101899476B1/en
Publication of KR20170046453A publication Critical patent/KR20170046453A/en
Application granted granted Critical
Publication of KR101899476B1 publication Critical patent/KR101899476B1/en

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    • H02J7/025—
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F38/00—Adaptations of transformers or inductances for specific applications or functions
    • H01F38/14—Inductive couplings
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04M—TELEPHONIC COMMUNICATION
    • H04M1/00—Substation equipment, e.g. for use by subscribers
    • H04M1/02—Constructional features of telephone sets
    • H04M1/0202—Portable telephone sets, e.g. cordless phones, mobile phones or bar type handsets
    • H04M1/026—Details of the structure or mounting of specific components

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  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Signal Processing (AREA)
  • Charge And Discharge Circuits For Batteries Or The Like (AREA)

Abstract

A wireless charging module and a mobile terminal having the same are disclosed. A wireless charging module according to an exemplary embodiment includes a film, a wireless charging coil provided on one side of the film, a wireless charging controller provided on the other side of the film and electrically connected to the wireless charging coil, And a battery connection part formed in the connection part and electrically connected to the wireless charge control part through the connection part.

Description

TECHNICAL FIELD [0001] The present invention relates to a wireless charging module and a mobile terminal including the wireless charging module.

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a wireless charging technology, and more particularly, to a wireless charging module and a mobile terminal having the wireless charging module.

2. Description of the Related Art Recently, mobile terminals that meet user's demands for mobility and portability such as smart phones, mobile phones, portable multimedia players (PMPs), MP3 players, digital cameras, notebooks, and tablet PCs have been widely used. Generally, mobile terminals have a built-in battery and recharge the battery when the battery is discharged. Here, a technique for wirelessly charging a battery to maximize the convenience of charging the battery is being developed.

Here, in order to wirelessly charge the battery of the mobile terminal, a wireless charging module has conventionally been installed inside the mobile terminal. The conventional wireless charging module is provided with a wireless charging controller for receiving wireless power and a wireless charging controller for rectifying the AC power received by the wireless charging coil to DC power and converting the voltage level of the rectified DC power, , A wiring structure for electrically connecting the wireless charging coil and the wireless charging control unit in the mobile terminal must be added, which increases the total volume of the wireless charging module in the mobile terminal.

Korean Patent Registration No. 10-1177302 (Aug. 30, 2012)

An embodiment of the present invention is to provide a wireless charging module capable of reducing the total volume of the wireless charging module and a mobile terminal having the wireless charging module.

An embodiment of the present invention is to provide a wireless charging module capable of wirelessly charging a mobile terminal not having a wireless charging function and a mobile terminal including the wireless charging module.

A wireless charging module in accordance with an exemplary embodiment includes: a film; A wireless charging coil provided on one surface of the film; A wireless charging controller provided on the other surface of the film and electrically connected to the wireless charging coil; A connecting portion extending from one end of the film; And a battery connection part formed in the connection part and electrically connected to the wireless charging control part through the connection part.

The wireless charging module may further include a ground provided on one side of the film and spaced apart from the wireless charging coil and electrically connected to the wireless charging controller.

The wireless charging module may further include a ground extension part connected to the ground on one side of the connection part and formed along the connection part.

The wireless charge control unit may be electrically connected to the ground through a via hole formed in the film.

The connection portion may be formed integrally with the film.

The connection portion may be provided to have a width smaller than the width of the film and extend in the longitudinal direction of the film at one end of the film.

Wherein the wireless charging controller includes: a rectifier for rectifying the AC power received by the wireless charging coil to DC power; And a converter for converting a voltage level of the rectified DC power into a predetermined voltage level.

Wherein the wireless charging module further comprises a first connection pad formed at one end of the wireless charging coil and a second connection pad formed at the other end of the wireless charging coil, The pad may be electrically connected to the wireless charge control unit through a via hole formed in the film.

The wireless charging module may include a plurality of signal lines formed along the connection portion at the connection portion and electrically connected to the wireless charging control portion; And a connector pin portion protruding from the battery connection portion and electrically connected to the plurality of signal lines.

The wireless charging module may further include an electromagnetic wave shielding material covering the wireless charging coil on one side of the film.

The wireless charging module may further include a character member connected to the wireless charging module.

The wireless charging module may further include a tilting member formed on the connection portion and rotating the film to change a direction in which the wireless charging coil looks.

The wireless charging module may be electrically connected to the mobile terminal via the battery connection from outside the mobile terminal and may change the orientation of the wireless charging coil through the pivoting member toward the wireless charging transmission pad .

A wireless charging module in accordance with another exemplary embodiment includes: a film; A wireless charging coil provided on one surface of the film; A wireless charging controller formed on the other surface of the film so as not to overlap with the wireless charging coil and electrically connected to the wireless charging coil through a first via hole formed in the film; And a ground electrically isolated from the wireless charging coil at one side of the film and electrically connected to the wireless charging control unit through a second via hole formed in the film.

In the embodiment of the present invention, by forming the wireless charging coil and the wireless charging controller together in the film, the wireless charging module can be integrated, thereby reducing the total volume of the wireless charging module. Accordingly, when the wireless charging module is built in the mobile terminal, the volume occupied by the wireless charging module in the mobile terminal can be reduced, and the utilization of the internal space of the mobile terminal can be increased.

In addition, the wireless charging module can be connected to the outside of the mobile terminal by forming the wireless charging coil and the wireless charging control module into a module integrated with the film and providing the battery connection portion by forming the connection portion on the film, A mobile terminal without a wireless charging module can wirelessly charge the mobile terminal.

1 is a plan view of a wireless charging module according to an embodiment of the present invention;
2 is a bottom view of a wireless charging module according to an embodiment of the present invention.
3 is a cross-sectional view of a wireless charging module in accordance with an embodiment of the present invention.
4 is a plan view showing a state in which the electromagnetic wave shielding material covers the wireless charging coil in the wireless charging module according to the embodiment of the present invention.
5 is a diagram illustrating a state in which a wireless charging module according to an embodiment of the present invention is connected to a mobile terminal from outside the mobile terminal

Hereinafter, specific embodiments of the present invention will be described with reference to the drawings. However, this is an exemplary embodiment only and the present invention is not limited thereto.

In the following description, a detailed description of known functions and configurations incorporated herein will be omitted when it may make the subject matter of the present invention rather unclear. The following terms are defined in consideration of the functions of the present invention, and may be changed according to the intention or custom of the user, the operator, and the like. Therefore, the definition should be based on the contents throughout this specification.

The technical idea of the present invention is determined by the claims, and the following embodiments are merely a means for efficiently describing the technical idea of the present invention to a person having ordinary skill in the art to which the present invention belongs.

On the other hand, directional terms such as the top, bottom, one side, the other, and the like are used in connection with the orientation of the disclosed figures. Since the elements of the embodiments of the present invention can be positioned in various orientations, directional terms are used for illustrative purposes and not limitation.

FIG. 1 is a plan view of a wireless charging module according to an embodiment of the present invention. FIG. 2 is a bottom view of a wireless charging module according to an embodiment of the present invention. Sectional view of the module.

1 to 3, the wireless charging module 100 may include a film 102, a wireless charging coil 104, a wireless charging control 106, a connection 108, and a battery connection 110 have.

In an exemplary embodiment, the wireless charging module 100 may be mounted within a mobile terminal (e.g., a smart phone, a mobile phone, a tablet, a notebook, a wearable device such as a smart watch, etc.). That is, the wireless charging module 100 is installed in a mobile terminal (not shown), and can receive the wireless power from the transmitting-side device and charge the battery of the mobile terminal (not shown). At this time, the mobile terminal (not shown) may be a terminal supporting the wireless charging function. However, the present invention is not limited thereto, and the wireless charging module 100 may be installed in various other electronic devices supporting the wireless charging function.

The film 102 is a base member of the wireless charging module 100 and may be provided in the form of a flat sheet. The film 102 may be provided in a rectangular shape. At this time, the end portion of the film 102 may be formed to have a narrowed width toward the terminal end. The film 102 may be provided in a flexible manner.

The wireless charging coil 104 is formed on one side of the film 102 as a pattern to be formed for wireless charging. The wireless charging coil 104 may be provided to receive power to be transmitted wirelessly from the transmitting-side device. The wireless charging coil 104 may be provided to satisfy a frequency band of a magnetic induction type (for example, a wireless power consortium (WPC) or a power matters Alliance (PMA)) among the wireless charging methods. For example, when the wireless charging method is a wireless power consortium (WPC), the wireless charging coil 104 may be provided to correspond to a band of 100 to 205 kHz. When the wireless charging scheme is PMA (Power Matters Alliance), the wireless charging coil 104 may be provided to correspond to the 277 to 357 kHz band or the 118 to 153 kHz band. However, the present invention is not limited thereto, and the wireless charging coil 104 may be provided so as to satisfy the frequency band of various wireless charging methods (for example, magnetic resonance type, magnetic induction type, etc.).

The wireless charging coil 104 may be formed in a spiral shape on one side of the film 102. A first connection pad 111 may be formed at one end of the wireless charging coil 104 and a second connection pad 113 may be formed at the other end of the wireless charging coil 104. The first connection pad 111 and the second connection pad 113 may be electrically connected to the wireless charging control part 106 formed on the other surface of the film 102 via a via hole have.

The wireless charge control unit 106 may be formed on the other side of the film 102. [ The wireless charging control unit 106 formed on the other surface of the film 102 is electrically connected to the wireless charging coil 104 formed on one side of the film 102. The wireless charging control unit 106 may be formed in an area not corresponding to the wireless charging coil 104 from the other side of the film 102. [ That is, the wireless charging controller 106 may be formed so as not to overlap with the wireless charging coil 104 on the other side of the film 102.

The wireless charging control unit 106 can control the wireless charging coil 104 to receive the wireless power transmitted from the transmitting-side device. The wireless charging control unit 106 may include a rectifying unit for rectifying the AC power received by the wireless charging coil 104 to DC power. The wireless charging control section 106 may include a converter for converting the voltage level of the DC power to a voltage level used in a battery (not shown). To this end, the wireless charging control section 106 may include a chip, an electronic component (such as an active element and a passive element), an electronic circuit, and circuit patterns for electrically connecting them.

On one side of the film 102, a ground 115 may be formed to be spaced apart from the wireless charging coil 104. At this time, the ground 115 may be formed in a region corresponding to the wireless charging control unit 106 on one side of the film 102. The ground 115 may be electrically connected to the wireless charging control unit 106 through another via hole (not shown) formed in the film 102. The ground 115 may be formed together when the wireless charging coil 104 is formed. In this case, the ground 115 may be made of the same material as the wireless charging coil 104.

The connecting portion 108 is provided extending in the lengthwise direction of the film 102 at one end of the film 102. The connection portion 108 may be provided with a width smaller than the width of the film 102. The connection portion 108 may be made of the same material as the film 102. At this time, the connection portion 108 may be formed integrally with the film 102. The connection portion 108 may be provided in a flexible manner like the film 102. At the end of the connection part 108, a battery connection part 110 may be formed.

A ground extension part 115a connected to the ground 115 may be formed on one surface of the connection part 108. The ground extension 115a may be formed along the connection portion 108 on one side of the connection portion 108. In this case, the entire ground area of the wireless charging module 100 can be widened and the connection portion 108 can be supported. A plurality of signal lines 117 may be formed on the other surface of the connection part 108. The signal line 117 may be provided to electrically connect the wireless charging control unit 106 and the battery connection unit 110.

The battery connection part 110 is formed at the end of the connection part 108. The battery connection part 110 may be electrically connected to the battery side of the mobile terminal (not shown). The battery connection unit 110 may transmit the received power of the wireless charging coil 104 to a battery of a mobile terminal (not shown) to charge the battery.

Specifically, the AC power received by the wireless charging coil 104 can be converted into DC power in the wireless charging control section 106. [ Also, the wireless charging control unit 106 may convert the voltage level of the DC power to the voltage level used in the battery of the mobile terminal (not shown). The DC power converted by the wireless charging control unit 106 is transmitted to the battery connection unit 110 through the signal line 117 and is transmitted from the battery connection unit 110 to the battery of the mobile terminal do.

The battery connection part 110 may include a connector pin part 110a electrically connected to the plurality of signal lines 117. [ The connector pin portion 110a may be provided so as to protrude vertically from the end of one side of the connection portion 108. [ The connector pin portion 110a may be electrically connected to a battery side terminal (or a connector or the like) in a mobile terminal (not shown).

The wireless charging module 100 and the wireless charging module 100 can be integrated by forming the wireless charging coil 104 and the wireless charging control unit 106 together in the film 102 in the embodiment of the present invention, ) Can be reduced. Accordingly, when the wireless charging module 100 is embedded in the mobile terminal, the volume occupied by the wireless charging module 100 in the mobile terminal can be reduced, and the utilization of the internal space of the mobile terminal can be enhanced.

Meanwhile, as shown in FIG. 4, the electromagnetic wave shielding member 120 may be formed on the wireless charging coil 104. That is, the electromagnetic wave shielding member 120 may be provided to cover the wireless charging coil 104 on one side of the film 102. The electromagnetic wave shielding member 120 may be provided in a size corresponding to that of the wireless charging coil 104. The electromagnetic wave shielding member 120 shields the electromagnetic wave generated from the wireless charging coil 104.

The electromagnetic wave shielding member 120 may be a metal magnetic thin plate sheet. The metal magnetic thin plate sheet may be one in which a ribbon or strip of a Fe-based magnetic alloy or a Co-based magnetic alloy is flaked and divided into a plurality of fine pieces (or a plurality of cracks are formed). As the Fe-based magnetic alloy, for example, an Fe-Si-B alloy or an Fe-Si-B-Co alloy can be used. Or a Co-Fe-Cr-Si-B alloy may be used, but the present invention is not limited thereto.

The electromagnetic wave shielding member 120 may be a ferrite sheet. For example, Mn-Zn ferrite, Ni-Zn-Cu ferrite, Mn-Mg ferrite and the like can be used as the ferrite powder. The ferrite powder is prepared by mixing a ferrite powder and a binder resin. The electromagnetic wave shielding material 120 may be a ferrite sheet having a high permeability (for example, a permeability of 800 or more).

The wireless charging module 100 may be used to charge a battery of a mobile terminal that does not support the wireless charging function. 5 is a diagram illustrating a state in which a wireless charging module according to an embodiment of the present invention is connected to a mobile terminal from outside the mobile terminal. In Fig. 5, the mobile terminal shows the back side.

Referring to FIG. 5, the wireless charging module 100 may be connected to the mobile terminal 50 outside the mobile terminal 50. That is, the connector pin portion 110a of the battery connection portion 110 is inserted into the connector (data transmission and charging connector) provided at the lower end portion of the mobile terminal 50 outside the mobile terminal 50, May be electrically connected to the mobile terminal 50.

Here, if the wireless charging transmission pad 200 is positioned below the wireless charging module 100, the mobile terminal 50 that does not support the wireless charging function can charge the battery through the wireless charging module 100 . The wireless charging transmission pad 200 serves to transmit wireless power. The wireless charging transmission pad 200 has a coil (or antenna) for transmitting wireless power.

Meanwhile, the wireless charging module 100 may include a tiltable member 130. The tiltable member 130 may be formed in the connection portion 108. [ The tiltable member 130 serves to rotate the wireless charging module 100 about an axis provided along the connection portion 108. In this case, the direction in which the wireless charging coil 104 is viewed can be freely changed by the tiltable member 130. Accordingly, when the wireless charging module 100 is mounted on the mobile terminal 50, wireless power can be transmitted to the wireless charging module 100 in various directions.

That is, since the film 102 can be freely rotated so that the wireless charging coil 104 is opposed to the wireless charging transmission pad 200 through the tiltable member 130, the wireless charging transmission pad 200 can be rotated in any direction The wireless charging coil 104 may be opposed to the wireless charging transmission pad 200 regardless of whether the wireless charging coil 104 is positioned or not.

In addition, a character member (not shown) may be attached to the electromagnetic wave shielding member 120 to give the wireless charging module 100 a sense of beauty. In this case, the user can attach his / her favorite character member (not shown) to carry the wireless charging module 100 as a kind of accessory. However, the present invention is not limited thereto, and the character member (not shown) may be connected to the wireless charging module 100 through a separate connection means. In addition, a character member (not shown) may be provided in the wireless charging module 100 through various other methods.

While the present invention has been particularly shown and described with reference to exemplary embodiments thereof, it is to be understood that the invention is not limited to the disclosed embodiments, but, on the contrary, I will understand. Therefore, the scope of the present invention should not be limited to the above-described embodiments, but should be determined by equivalents to the appended claims, as well as the appended claims.

100: Wireless charging module
102: Film
104: Wireless charging coil
106: Wireless charging controller
108:
110: Battery connection
110a: Connector pin portion
111: first connection pad
113: second connection pad
115: Ground
115a: Ground extension part
117: Signal line
120: EMI shielding material
130:

Claims (15)

film;
A wireless charging coil provided on one surface of the film;
A wireless charging controller provided on the other surface of the film and electrically connected to the wireless charging coil;
A connecting portion extending from one end of the film;
A battery connection part formed in the connection part and electrically connected to the wireless charging control part through the connection part; And
And a tiltable member formed on the connection portion and rotating the film to change a direction in which the wireless charging coil is viewed.
The method according to claim 1,
The wireless charging module includes:
Further comprising a ground provided on one side of the film and spaced apart from the wireless charging coil and electrically connected to the wireless charging control section.
The method of claim 2,
The wireless charging module includes:
Further comprising a ground extension connected to the ground at one side of the connection and formed along the connection.
The method of claim 2,
Wherein the wireless charging control unit comprises:
And electrically connected to the ground through a via hole formed in the film.
The method according to claim 1,
The connecting portion
And is formed integrally with the film.
The method of claim 5,
The connecting portion
Wherein the film is provided with a width smaller than the width of the film and is provided to extend in the longitudinal direction of the film at one end of the film.
The method according to claim 1,
Wherein the wireless charging control unit comprises:
A rectifier for rectifying the AC power received by the wireless charging coil to DC power; And
And a converter for converting a voltage level of the rectified DC power to a predetermined voltage level.
The method according to claim 1,
The wireless charging module includes:
Further comprising a first connection pad formed at one end of the wireless charging coil and a second connection pad formed at the other end of the wireless charging coil,
Wherein the first connection pad and the second connection pad are electrically connected to the wireless charging control unit through a via hole formed in the film.
The method according to claim 1,
The wireless charging module includes:
A plurality of signal lines formed along the connection portion at the connection portion and electrically connected to the wireless charge control portion; And
And a connector pin portion protruding from the battery connection portion and electrically connected to the plurality of signal lines.
The method according to claim 1,
The wireless charging module includes:
Further comprising an electromagnetic wave shielding material covering the wireless charging coil at an upper surface of the film.
The method according to claim 1,
The wireless charging module includes:
And a character member coupled to the wireless charging module.
delete The method according to claim 1,
Wherein the wireless charging module is electrically connected to the mobile terminal outside the mobile terminal through the battery connection,
And the direction of the wireless charging coil facing the wireless charging transmission pad can be changed via the tiltable member.
delete A mobile terminal in which a wireless charging module according to any one of claims 1 to 11 and 13 is provided, the battery being charged through the wireless charging module.
KR1020150146831A 2015-10-21 2015-10-21 Wireless charging module and mobile terminal with the same KR101899476B1 (en)

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Application Number Priority Date Filing Date Title
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KR101899476B1 true KR101899476B1 (en) 2018-09-18

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Publication number Priority date Publication date Assignee Title
KR20190029131A (en) * 2017-09-12 2019-03-20 엘지이노텍 주식회사 Wireless charging coil, manufacturing method thereof and wireless charging apparatus having the same

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR101417388B1 (en) * 2012-03-23 2014-08-06 엘지이노텍 주식회사 Wireless power receiver and method of manufacturing the same

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KR101250266B1 (en) * 2011-05-31 2013-04-03 주식회사 아울테크놀로지 Wireless charger to charge battery of mobile comunication device having different capacity and method thereof
KR20140105251A (en) * 2013-02-22 2014-09-01 (주)엠에이피테크 Power reception module for wireless charging system
KR102017621B1 (en) * 2013-03-12 2019-10-21 주식회사 위츠 Coil substrate for cordless charging and electric device using the same
KR101521977B1 (en) * 2013-03-25 2015-05-21 주식회사 타이드 control method of the system and battery chargin system in wireless charge
KR101587620B1 (en) * 2015-05-29 2016-01-28 주식회사 아모센스 Antenna Device for Mobile Terminal

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR101417388B1 (en) * 2012-03-23 2014-08-06 엘지이노텍 주식회사 Wireless power receiver and method of manufacturing the same

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