I 1111111111111111 1111111111 11111 111111111111111 IIIII IIIII lll111111111111111
`USO 10069346B2
`
`c12) United States Patent
`Lee et al.
`
`(IO) Patent No.: US 10,069,346 B2
`*Sep.4,2018
`(45) Date of Patent:
`
`(54) WIRELESS POWER RECEIVER AND
`CONTROL METHOD THEREOF
`
`(71) Applicant: LG INNOTEK CO., LTD., Seoul (KR)
`
`(72)
`
`Inventors: Ki Min Lee, Seoul (KR); Jung Oh
`Lee, Seoul (KR)
`
`(56)
`
`References Cited
`
`U.S. PATENT DOCUMENTS
`
`5,430,618 A
`9,240,824 B2
`
`7/1995 Huang
`1/2016 Hillan et al.
`(Continued)
`
`(73) Assignee: LG INNOTEK CO., LTD., Seoul (KR)
`
`FOREIGN PATENT DOCUMENTS
`
`( *) Notice:
`
`Subject to any disclaimer, the term ofthis
`patent is extended or adjusted under 35
`U.S.C. 154(b) by 112 days.
`
`This patent is subject to a terminal dis(cid:173)
`claimer.
`
`(21) Appl. No.: 15/195,390
`
`(22) Filed:
`
`Jun. 28, 2016
`
`(65)
`
`Prior Publication Data
`
`US 2016/0308401 Al
`
`Oct. 20, 2016
`
`Related U.S. Application Data
`
`CN
`CN
`
`5/2006
`1768462 A
`10/2008
`101286411 A
`(Continued)
`
`OTHER PUBLICATIONS
`
`Office Action dated Apr. 19, 2017 in Taiwanese Application No.
`105133529.
`
`(Continued)
`
`Primary Examiner - Fritz M Fleming
`(74) Attorney, Agent, or Firm - Saliwanchik, Lloyd &
`Eisenschenk
`
`(63) Continuation of application No. 13/658,116, filed on
`Oct. 23, 2012.
`
`(57)
`
`ABSTRACT
`
`(30)
`
`Foreign Application Priority Data
`
`Nov. 4, 2011
`
`(KR) ........................ 10-2011-0114721
`
`(51)
`
`Int. Cl.
`H02J 50112
`H0lQ 1152
`
`(2016.01)
`(2006.01)
`(Continued)
`
`(52) U.S. Cl.
`CPC .......... H02J 50112 (2016.02); G06K 1910708
`(2013.01); G06K 1910715 (2013.01);
`(Continued)
`( 58) Field of Classification Search
`CPC .. H02J 50/70; H02J 50/10; H02J 50/12; H02J
`50/80; H04B 5/0037
`See application file for complete search history.
`
`A wireless power receiver according to an embodiment
`wirelessly receives power from a wireless power transmitter.
`The wireless power receiver includes a printed circuit board;
`a receiving coil disposed on the printed circuit board, the
`receiving coil configured to receive power from the wireless
`power transmitter in a charging mode; a short-range com(cid:173)
`munication antenna disposed on the printed circuit board
`surrounding the receiving coil, the short-range communica(cid:173)
`tion antenna configured to transmit and receive information
`in a communication mode; a shielding unit disposed on the
`receiving coil and the short-range communication antenna;
`and a controller configured to change an operating mode of
`the wireless power receiver into the charging mode or the
`communication mode.
`
`14 Claims, 11 Drawing Sheets
`
`310
`
`A
`
`340
`
`r·
`i
`
`I
`I
`L.
`
`(a)
`
`(b)
`
`301
`
`380
`
`375
`
`Ex.1008
`APPLE INC. / Page 1 of 19
`
`

`

`US 10,069,346 B2
`Page 2
`
`(51)
`
`(52)
`
`(2006.01)
`(2006.01)
`(2006.01)
`(2006.01)
`(2006.01)
`(2016.01)
`(2016.01)
`(2006.01)
`(2016.01)
`
`Int. Cl.
`H0lQ 7100
`G06K 19107
`G06K 191077
`H0lQ 1122
`H04B 5100
`H02J 50/80
`H02J 7102
`H02J 7104
`H02J 50/10
`U.S. Cl.
`CPC ..... G06K 19/07783 (2013.01); H0lQ 112225
`(2013.01); H0lQ 11526 (2013.01); H0lQ 7100
`(2013.01); H02J 71025 (2013.01); H02J 71045
`(2013.01); H02J 50/80 (2016.02); H04B
`510031 (2013.01); H04B 510037 (2013.01);
`H04B 510087 (2013.01); H02J 50/10
`(2016.02)
`
`H02J 50/80
`
`(56)
`
`References Cited
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`9,461,364 B2 * 10/2016 Lee
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`2010/0066304 Al
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`6/2010 Gioscia et al.
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`7/2010 Stevenson et al.
`2011/0018358 Al
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`2011/0025265 Al
`2/2011 Mochida et al.
`2011/0115303 Al
`5/2011 Baarman et al.
`2011/0127953 Al
`6/2011 Walley
`9/2011 Ben-Shalom et al.
`2011/0217927 Al
`2011/0227420 Al
`9/2011 Urano
`2011/0316475 Al
`12/2011 Jung et al.
`2012/0205989 Al
`8/2012 Baarman
`2012/0282857 Al
`11/2012 Zhang
`2013/0038278 Al
`2/2013 Park et al.
`2013/0113422 Al
`5/2013 Lee et al.
`
`FOREIGN PATENT DOCUMENTS
`
`CN
`CN
`CN
`CN
`CN
`CN
`CN
`CN
`
`2012-15827 Y
`101517666 A
`20-1663492 U
`10-1964678 A
`10-1971453 A
`20-1749754 U
`101983466 A
`10-2195366 A
`
`4/2009
`8/2009
`12/2010
`2/2011
`2/2011
`2/2011
`3/2011
`9/2011
`
`EP
`EP
`JP
`JP
`JP
`JP
`KR
`KR
`KR
`KR
`KR
`KR
`KR
`KR
`KR
`KR
`KR
`KR
`KR
`KR
`TW
`TW
`WO
`WO
`
`0790667 Al
`2367262 A2
`2006-302567 A
`2009-247124 A
`2010-073976 A
`2011-523336 A
`10-2005-0105200 A
`10-2008-0074640 A
`10-2008-0095643 A
`10-2010-0067748 A
`10-2010-0112400 A
`10-2011-0033836
`10-2011-0056334 A
`10-2011-0120122 A
`10-2013-0015244 A
`10-2013-0016588 A
`10-2013-0049608 A
`10-2013-0049781 A
`10-2013-0072181 A
`10-1298660 Bl
`2009-52303 A
`201132014 A
`WO-2007/015599 Al
`WO-2010/047850 Al
`
`8/1997
`9/2011
`11/2006
`10/2009
`4/2010
`8/2011
`11/2005
`8/2008
`10/2008
`6/2010
`10/2010
`3/2011
`5/2011
`11/2011
`2/2013
`2/2013
`5/2013
`5/2013
`7/2013
`8/2013
`12/2009
`9/2011
`2/2007
`4/2010
`
`OTHER PUBLICATIONS
`
`Office Action dated May 15, 2017 in Korean Application No.
`10-2014-0081260.
`Office Action dated Dec. 26, 2012 in Korean Application No.
`10-2011-0114721, filed Nov. 4, 2011.
`Office Action dated Jul. 22, 2013 in Korean Application No.
`10-2011-0114721, filed Nov. 4, 2011.
`Notice of Allowance dated Oct. 23, 2013 in Korean Application No.
`10-2011-0114721, filed Nov. 4, 2011.
`Search Report dated Sep. 3, 2013 in Korean Application No.
`10-2013-0100314, filed Aug. 23, 2013.
`Office Action dated Jan. 6, 2014 in Korean Application No.
`10-2013-0100314.
`Office Action dated Jun. 26, 2014 in Chinese Application No.
`201210432152.X.
`Office Action dated Jul. 17, 2014 in Korean Application No.
`10-2013-0018321.
`Office Action dated Aug. 6, 2014 in Taiwanese Application No.
`101139085.
`European Search Report dated Feb. 18, 2015 in European Appli(cid:173)
`cation No. 12189931.4.
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`cation No. 14167637.9.
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`12189931.4.
`Office Action dated Nov. 28, 2017 in Korean Application No.
`10-2014-0081260.
`Office Action dated Jan. 5, 2018 in Chinese Application No.
`201610451640.3.
`
`* cited by examiner
`
`Ex.1008
`APPLE INC. / Page 2 of 19
`
`

`

`U.S. Patent
`
`Sep.4,2018
`
`Sheet 1 of 11
`
`US 10,069,346 B2
`
`FIG.I
`
`200
`
`210
`\
`1 - - - j - -7
`I
`/
`I
`I
`I
`I
`I
`I
`I
`I
`I
`L ______ _J
`
`300
`)
`310
`320
`330
`1-~-7----r-----r-
`\
`'
`{
`,
`---....-r---.
`
`)
`
`l
`I
`I
`I
`I
`I
`I
`I
`L ________________ _
`
`Rectifier
`Cir CU it
`
`Load
`
`Ex.1008
`APPLE INC. / Page 3 of 19
`
`

`

`U.S. Patent
`U.S. Patent
`
`Sep. 4, 2018
`Sep.4,2018
`
`Sheet 2 of 11
`Sheet 2 of 11
`
`US 10,069,346 B2
`US 10,069,346 B2
`
`
`
`
`
`L1
`
`/
`
`C1
`
`Ex.1008
`APPLEINC./ Page 4 of 19
`
`Ex.1008
`APPLE INC. / Page 4 of 19
`
`

`

`U.S. Patent
`
`Sep.4,2018
`
`Sheet 3 of 11
`
`US 10,069,346 B2
`
`FIG.3
`
`200
`)
`'
`i_ --- ---- ----
`
`---
`
`r-· ----
`
`----
`
`----
`
`----
`
`100
`I
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`/
`
`"' l.1 !
`
`/
`
`L _ _
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`320
`310
`)
`j
`r _____ L __ i r - - - - 1 - - 7
`
`C2
`
`C3
`
`3]0
`l
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`----
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`___
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`I
`l __ ---- ·------]
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`I
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`.
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`- - - - - - - -~L _ _ _ _ _ _ _ L - - - - -~
`
`Ex.1008
`APPLE INC. / Page 5 of 19
`
`

`

`U.S. Patent
`
`Sep.4,2018
`
`Sheet 4 of 11
`
`US 10,069,346 B2
`
`3 0
`
`340
`\
`
`I. Rece_1v1ng. _ __ Short-range
`1 on co I
`oommun i cat ion co i i
`
`1
`
`I
`
`w>eless
`ng circuit
`
`375
`
`350
`
`f
`
`B.
`
`Switch
`
`·
`
`-
`
`360
`
`(
`
`300
`(
`
`370
`)
`\
`
`. ' . Short-ranae
`
`Prorn~tl!lQ ---- r,rmmunir~t--;1nn
`un I t
`..,Q,..
`" vd
`ITIOC1U I 8
`
`V
`
`~--...., Control I er
`
`Shielding
`Ull t
`
`\
`380
`
`Ex.1008
`APPLE INC. / Page 6 of 19
`
`

`

`U.S. Patent
`
`Sep.4,2018
`
`Sheet 5 of 11
`
`US 10,069,346 B2
`
`I
`I
`I
`I
`\,
`
`FIG~5
`
`r.gn
`\Jyv
`
`I
`!
`
`f
`
`I
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`' \
`i
`
`370
`)
`
`Short-range
`comrnunicatioil
`module
`
`I
`I
`1--------(cid:173)
`__ ,.,,' B
`
`---
`
`I
`\...
`
`J
`~;
`
`Cont r o 11 er
`
`·---390
`
`Ex.1008
`APPLE INC. / Page 7 of 19
`
`

`

`U.S. Patent
`
`Sep.4,2018
`
`Sheet 6 of 11
`
`US 10,069,346 B2
`
`FIG.6
`
`302
`!
`
`(a)
`
`(b)
`
`[ ______ .i: __ ;,_.,1 ___ :,_J __ ,_J_,. _________ ,
`
`\1
`301
`
`1 r--r,--:rr---(cid:143) ---:u---1rT--r-:r--rr--rr--rr1r--t--· 31 o , 340
`\
`380
`
`Ex.1008
`APPLE INC. / Page 8 of 19
`
`

`

`U.S. Patent
`U.S. Patent
`
`Sep. 4, 2018
`Sep.4,2018
`
`Sheet 7 of 11
`Sheet 7 of 11
`
`US 10,069,346 B2
`US 10,069,346 B2
`
`FIG.7
`
`
`
`
`
`\
`340 301
`
`310
`
`--37.5
`
`340
`
`:301
`
`Ex.1008
`APPLEINC./ Page 9 of 19
`
`Ex.1008
`APPLE INC. / Page 9 of 19
`
`

`

`U.S. Patent
`
`Sep.4,2018
`
`Sheet 8 of 11
`
`US 10,069,346 B2
`
`FIG.8
`
`310
`
`I
`
`.
`
`.
`
`.
`
`I.
`
`.
`
`A
`I
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`}
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`I
`i
`!
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`!
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`
`(cid:143) D
`(cid:143) o
`
`D
`
`375
`
`- -301
`
`-~--380
`
`(a)
`
`(b)
`
`Ex.1008
`APPLE INC. / Page 10 of 19
`
`

`

`U.S. Patent
`
`Sep.4,2018
`
`Sheet 9 of 11
`
`US 10,069,346 B2
`
`FIG.9
`
`L:..r-~~~~~~~~~~~~~~~~~-~~~~~~~~~~-~~~-~~~\
`
`--~'-=!Q·i
`i/
`I
`)'JL'
`l:'.L'."r'-'-"-...... -'-''--'-..... --'-"'--'-'--'-.L..t.-"-<'-'-"--'-...... -"-''--'-..... --'-"'--"-...... ""-"-"-''---'--'-"~'-"--'-'--'-"-"-''-"-"-"--"-"'--'--'--'-....... -'-''-;'.Lj
`P?.,._,'7:,,..,...777'.''7:777'?7'.''777.,,,'7'.,..,,,77"?'";'7,..,,,7?'7'7777='7'"7777"7":'7777''7'777".'7'"]'77777! j I
`1'7J.-,,-.,...,,..,...,,,..,,...,...,,..,....,...,..,...,..,,,..,....,,...,...,,..,...,,..,...,...,...,,,..,,...,...,,..,...,...,..,...,....,...,..,,..,,...,...,...,,.-r,,..,.-,...,-.,...-,...,...,,...,..,,..,....,...,...,..,...,...,...,,..,...,....,...,'ZI j
`
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`+ + +
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`T
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`
`+ +
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`+
`
`Ex.1008
`APPLE INC. / Page 11 of 19
`
`

`

`U.S. Patent
`
`Sep.4,2018
`
`Sheet 10 of 11
`
`US 10,069,346 B2
`
`FIG.10
`
`380-·-
`
`Ex.1008
`APPLE INC. / Page 12 of 19
`
`

`

`U.S. Patent
`
`Sep.4,2018
`
`Sheet 11 of 11
`
`US 10,069,346 B2
`
`FIG.11
`
`( Start )
`:
`
`r✓e.s
`.____ ____ ~ __ : _._· _h ___ __,L C: ~:, O· '.)
`! -- '"'
`upen ~w 11 c
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`,------------i
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`Change current tiowing d1rection ~---S111
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`i
`
`Ex.1008
`APPLE INC. / Page 13 of 19
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`

`

`US 10,069,346 B2
`
`1
`WIRELESS POWER RECEIVER AND
`CONTROL METHOD THEREOF
`
`CROSS REFERENCE TO RELATED
`APPLICATION
`
`This application is a continuation of U.S. application Ser.
`No. 13/658,116, filed Oct. 23, 2012, which claims the benefit
`under 35 U.S.C. § 119 of Korean Patent Application No.
`10-2011-0114721, filed Nov. 4, 2011, which are hereby
`incorporated by reference in their entirety.
`
`BACKGROUND
`
`5
`
`2
`A wireless power receiver according to an embodiment
`wirelessly receives power from a wireless power transmitter.
`The wireless power receiver includes a printed circuit board;
`a receiving coil disposed on the printed circuit board, the
`receiving coil configured to receive power from the wireless
`power transmitter in a charging mode; a short-range com(cid:173)
`munication antenna disposed on the printed circuit board
`surrounding the receiving coil, the short-range communica(cid:173)
`tion antenna configured to transmit and receive information
`10 in a communication mode; a shielding unit disposed on the
`receiving coil and the short-range communication antenna;
`and a controller configured to change an operating mode of
`the wireless power receiver into the charging mode or the
`communication mode.
`A wireless power receiver according to the embodiment
`wirelessly receives power from a wireless power transmitter.
`The wireless power receiver includes a receiving coil dis(cid:173)
`posed in a reception space of the printed circuit board, the
`20 receiving coil configured to receive power from the wireless
`power transmitter in a charging mode; a short-range com(cid:173)
`munication antenna disposed in the printed circuit board
`surrounding the receiving coil, the short-range communica(cid:173)
`tion antenna configured to transmit and receive information
`25 in a communication mode; a shielding unit disposed on the
`receiving coil and the short-range communication antenna;
`and a controller configured to change an operating mode of
`the wireless power receiver into the charging mode or the
`communication mode.
`According to the embodiments, the thickness of the
`wireless power receiver can be minimized by suitably
`arranging the receiving coil, the short-range communication
`antenna and the printed circuit board.
`According to the embodiments, the wireless power
`receiver can be prevented from being broken by preventing
`an overcurrent from flowing in the wireless power receiver
`and malfunction of the wireless power receiver can be
`prevented by shielding a magnetic field.
`
`BRIEF DESCRIPTION OF THE DRAWINGS
`
`The embodiment relates to a wireless power receiver and 15
`a control method thereof.
`A wireless power transmission or a wireless energy trans-
`fer refers to a technology of wirelessly transferring electric
`energy to desired devices. In the 1800's, an electric motor or
`a transformer employing the principle of electromagnetic
`induction has been extensively used and then a method for
`transmitting electrical energy by irradiating electromagnetic
`waves, such as radio waves or lasers, has been suggested.
`Actually, electrical toothbrushes or electrical razors, which
`are frequently used in daily life, are charged based on the
`principle of electromagnetic induction. Until now, the long(cid:173)
`distance transmission using the magnetic induction, the
`resonance and the short-wavelength radio frequency has
`been used as the wireless energy transfer scheme.
`Recently, among wireless power transmitting technolo- 30
`gies, an energy transmitting scheme employing resonance
`has been widely used.
`Since an electric signal generated between the wireless
`power transmitter and the wireless power receiver is wire(cid:173)
`lessly transferred through coils in a wireless power trans- 35
`mitting system using electromagnetic induction, a user may
`easily charge electronic appliances such as a portable device.
`However, due to the thickness of each of a receiving coil,
`a short-range communication antenna and a printed circuit
`board constituting a receiving side, a size of an electronic 40
`appliance becomes larger and it is not easy to embed them
`in the electronic appliance. Specifically, the size of the
`electronic appliance is increased corresponding to the thick(cid:173)
`ness of the receiving coil, the short-range communication
`antenna and the printed circuit board.
`Further, when an overcurrent flows through the short(cid:173)
`range communication module, it is difficult to effectively
`cope with the overcurrent.
`Further, a magnetic field generated from the receiving coil
`exerts an influence on an inside of an electronic appliance, 50
`so that the electronic appliance malfunctions.
`
`45
`
`BRIEF SUMMARY
`
`The embodiment provides a wireless power receiver with
`a minimized thickness by suitably arranging a receiving coil,
`a short-range communication antenna and a printed circuit
`board.
`The embodiment provides a wireless power receiver with
`a reduced thickness by allowing a short-range communica(cid:173)
`tion antenna to be included in a printed circuit board.
`The embodiment provides a wireless power receiver
`which prevents an electronic appliance from malfunctioning
`using a shielding unit.
`The embodiment provides a wireless power receiver 65
`which breaks an overcurrent by using a protecting unit to
`protect a short-range communication module.
`
`FIG. 1 is a view showing a wireless power transmission
`system according to the embodiment;
`FIG. 2 is an equivalent circuit diagram of a transmitting
`coil according to the embodiment;
`FIG. 3 is an equivalent circuit diagram of the wireless
`power transmission system according to the embodiment;
`FIG. 4 is a block diagram of a wireless power receiver
`according to the embodiment;
`FIG. 5 is a view showing an example of a configuration
`of the wireless power receiver according to the embodiment;
`FIG. 6 is a exploded perspective and sectional view
`illustrating the wireless power receiver according to the
`55 embodiment;
`FIG. 7 is a sectional view showing an arrangement of
`elements of the wireless power receiver according to the
`embodiment;
`FIG. 8 is a view illustrating a top surface and a bottom
`60 surface of the wireless power receiver according to the
`embodiment;
`FIG. 9 is a view illustrating one example of attaching a
`shielding unit onto the wireless power receiver according to
`the embodiment;
`FIG. 10 is a view illustrating one example of inserting the
`shielding unit into the wireless power receiver according to
`the embodiment; and
`
`Ex.1008
`APPLE INC. / Page 14 of 19
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`US 10,069,346 B2
`
`3
`FIG. 11 is a flowchart illustrating a control method of the
`wireless power receiver according to the embodiment.
`
`DETAILED DESCRIPTION
`
`Hereinafter, exemplary embodiments of the disclosure
`will be described in detail so that those skilled in the art can
`easily comprehend the disclosure.
`FIG. 1 illustrates a wireless power transmission system
`according to an embodiment.
`The power generated from a power source 100 is provided
`to a wireless power transmitter 200, such that the power is
`transferred by electromagnetic induction to a wireless power
`receiver 300.
`In detail, the power source 100 is an AC power source for
`supplying AC power of a predetermined frequency.
`The wireless power transmitter 200 includes a transmit(cid:173)
`ting coil 210. The transmitting coil 210 is connected to the
`power source 100, such that an AC current flows through the
`transmitting coil 210. When the AC current flows through 20
`the transmitting coil 210, an AC current is induced to the
`receiving coil 310 physically apart from the transmitting coil
`210 due to electromagnetic induction, so that the AC power
`is transferred to the wireless power receiver 300.
`Power may be transferred by electromagnetic induction 25
`between two LC circuits which are impedance-matched with
`each other. The power transmission through electromagnetic
`induction may enable high efficiency power transmission.
`The wireless power receiver 300 may include a receiving
`coil 310, a rectifier circuit 320 and a load 330. In the 30
`embodiment, the load 330 may be not included in the
`wireless power receiver 300, but may be provided sepa(cid:173)
`rately. The power transmitted through the transmitting coil
`210 is received at the receiving coil 310 by electromagnetic
`induction. The power transferred to the receiving coil 310 is 35
`transferred through the rectifier circuit 320 to the load 330.
`FIG. 2 is an equivalent circuit diagram of the transmitting
`coil 210 according to the embodiment.
`As shown in FIG. 2, the transmitting coil 210 may include
`an inductor Ll and a capacitor Cl, and form a circuit having 40
`a suitable inductance value and a suitable capacitance value.
`The capacitor Cl may be a variable capacitor. By controlling
`the variable capacitor, an impedance matching may be
`performed. Meanwhile, an equivalent circuit of the receiving
`coil 320 may be equal to that depicted in FIG. 2.
`FIG. 3 is an equivalent circuit diagram of the wireless
`power transmitting system according to the embodiment.
`As shown in FIG. 3, the transmitting coil 210 may include
`an inductor Ll having a predetermined inductance value and
`a capacitor Cl having a predetermined capacitance value.
`Further, as shown in FIG. 3, the receiving coil 310 may
`include an inductor L2 having a predetermined inductance
`value and a capacitor C2 having a predetermined capaci(cid:173)
`tance value. The rectifier circuit 320 may include a diode Dl
`and a rectifying capacitor C3 such that the rectifier circuit 55
`320 converts AC power into DC power and outputs the DC
`power.
`Although the load 330 is denoted as a DC power source,
`the load 330 may be a battery or other devices requiring DC
`power.
`Next, a wireless power receiver according to the embodi(cid:173)
`ment will be described with reference to FIGS. 4 to 10.
`FIG. 4 is a block diagram of a wireless power receiver
`according to the embodiment, FIG. 5 is a view showing an
`example of a configuration of the wireless power receiver 65
`according to the embodiment, FIG. 6 is a exploded perspec(cid:173)
`tive and sectional view illustrating the wireless power
`
`4
`receiver according to the embodiment, FIG. 7 is a sectional
`view showing an arrangement of elements of the wireless
`power receiver according to the embodiment, FIG. 8 is a
`view illustrating a top surface and a bottom surface of the
`5 wireless power receiver according to the embodiment, FIG.
`9 is a view illustrating one example of attaching a shielding
`unit onto the wireless power receiver according to the
`embodiment, and FIG. 10 is a view illustrating one example
`of inserting the shielding unit into the wireless power
`10 receiver according to the embodiment.
`First, referring to FIG. 4, the wireless power receiver 300
`may include a receiving coil 310, a short-range communi(cid:173)
`cation antenna 340, a switch 350, a protecting unit 360, a
`15 short-range communication module 370, a shielding unit
`380, and a controller 390.
`The wireless power receiver 300 according to the embodi(cid:173)
`ment may be installed in a terminal or an electronic appli(cid:173)
`ance requiring power, such as a portable terminal, a laptop
`computer, and a mouse.
`The receiving coil 310 receives power from the transmit(cid:173)
`ting coil 210 of the wireless power transmitter 200 through
`electromagnetic induction. That is, if a magnetic field is
`generated as an AC current flows through the transmitting
`coil 210, a current is induced to the receiving coil 310 by the
`generated magnetic field so that an AC current flows there-
`through.
`In the embodiment, the receiving coil 310 may be dis(cid:173)
`posed in a reception space of a printed circuit board 301.
`The receiving coil 310 may be provided by winding a
`conducting wire server times. In the embodiment, the receiv(cid:173)
`ing coil 310 may have a spiral shape, but the embodiment is
`not limited thereto.
`The short-range communication antenna 340 may com(cid:173)
`municate with a reader capable of performing a short-range
`communication. The short-range communication antenna
`340 may perform a function of an antenna which transmits
`and receives information to and from the reader. In the
`embodiment, the short-range communication antenna 340
`may be disposed at an outside of the receiving coil 310. In
`the embodiment, the receiving coil 310 may be disposed in
`the reception space inside the printed circuit board 301, and
`the short-range communication antenna 340 may be dis(cid:173)
`posed to surround the receiving coil 310 on the printed
`45 circuit board 301.
`The above configuration will be described in more detail
`with reference to FIG. 6.
`Referring to the exploded perspective view of the wireless
`power receiver 300 shown in FIG. 6(a), the wireless power
`50 receiver 300 may include a case 302, the printed circuit
`board 301, the receiving coil 310, the short-range commu(cid:173)
`nication antenna 340 and the shielding unit 380. Here, the
`case 302 refers to a case of a portable terminal, but the
`embodiment is not limited thereto. The shielding unit 380
`will be described later.
`Referring to FIG. 6(a), it may be identified that the
`receiving coil 310 is disposed in the reception space A of the
`printed circuit board 301 and the short-range communication
`antenna 340 is disposed on the printed circuit board 301.
`60 That is, the receiving coil 310 may be disposed in the
`reception space A provided inside the printed circuit board
`301, and the short-range communication antenna 340 may
`be disposed at an upper side of the printed circuit board 301
`while surrounding the reception space A.
`FIG. 6(b) is a sectional view showing the arrangement of
`the elements of the wireless power receiver 300 illustrated in
`FIG. 6(a).
`
`Ex.1008
`APPLE INC. / Page 15 of 19
`
`

`

`US 10,069,346 B2
`
`5
`In the embodiment, the printed circuit board 301, the
`receiving coil 310 and the short-range communication
`antenna 340 may be inserted into the case 302 through the
`injection molding. Further, as described above, the short(cid:173)
`range communication antenna 340 may be disposed at an
`outer periphery on the printed circuit board 301 while
`surrounding the receiving coil 310 placed in the reception
`space A.
`Hereinafter, the arrangement among the receiving coil
`310, the short-range communication antenna 340 and the 10
`printed circuit board 301 will be described in more detail
`with reference to FIGS. 7 and 8.
`First, referring to FIG. 7, the printed circuit board 301 has
`the reception space A in a predetermined area thereof. In the
`embodiment, the predetermined area may include the central
`portion of the printed circuit board 301. In the embodiment,
`the central portion of the printed circuit board 301 may have
`the reception space having a polygonal shape, such as a
`rectangular shape and a circular shape.
`The receiving coil 310 is disposed in the reception space
`A of the printed circuit board 301, and receives power from
`the transmission induction coil 210 through electromagnetic
`induction. In the embodiment, the receiving coil 310 and the
`printed circuit board 301 may be manufactured such that the
`thickness of the receiving coil 310 may be equal to that of 25
`the printed circuit board 301 or the thickness of the receiving
`coil 310 may be less than that of the printed circuit board
`301. In this case, the increase of the thickness of the wireless
`power receiver 300 due to the thicknesses of the receiving
`coil 310 and the short-range communication antenna 340 is
`prevented, so that the wireless power receiver 300 can be
`easily embedded in the case of the portable terminal.
`In the embodiment, the receiving coil 310 may be manu(cid:173)
`factured to have a shape in match with a shape of the
`reception space A of the printed circuit board 310. For
`example, when the shape of the reception space A of the
`printed circuit board 310 is rectangular, the receiving coil
`310 or the conducting wire may be wound in a rectangular
`shape. When the shape of the reception space A of the
`printed circuit board 310 is circular, the receiving coil 310
`or the conducting wire may be wound in a circular shape.
`Thus, the receiving coil 310 or the conducting wire may
`have various shapes.
`The short-range communication antenna 340 may be
`included in the printed circuit board 301 and may be
`configured to surround the receiving coil 310. In the embodi(cid:173)
`ment, the short-range communication antenna 340 may be
`manufactured such that the short-range communication
`antenna 340 may be embedded in the printed circuit board
`301, and may be configured to surround the outer periphery
`of the receiving coil 310 having various shapes such as a
`rectangular shape or a circular shape. In this case, the
`increase of the thickness of the wireless power receiver 300
`due to the thickness of the printed circuit board 301 and the
`short-range communication antenna 340 can be prevented so
`that the wireless power receiver 300 can be easily installed
`in the case of the portable terminal.
`The wireless power receiver 300 may further include a
`shielding unit 380 for shielding a magnetic field generated
`by the receiving coil 310. In the embodiment, the shielding
`unit 380 may be disposed to cover an area occupied by the
`receiving coil 310. In the embodiment, the shielding unit
`380 may be disposed on the receiving coil 310 and the
`short-range communication antenna 340 such that the
`shielding unit 380 may include the area occupied by the 65
`receiving coil 310 and the short-range communication
`antenna 340.
`
`6
`In the embodiment, the shielding unit 380 may have a
`reception space in a predetermined area thereof A wireless
`charging circuit 375, which is place on the top surface of the
`printed circuit board 301, may be disposed in the reception
`5 space of the shielding unit 380. The wireless charging circuit
`375 may include a rectifier circuit for converting AC power
`into DC power, a capacitor for removing a noise signal, and
`a main IC chip for performing the operation for the wireless
`power reception.
`In the embodiment, the shielding unit 380 and the wireless
`charging circuit 375 may be manufactured such that the
`thickness of the shielding unit 380 may be equal to that of
`the wireless charging circuit 375 or the thickness of the
`shielding unit 380 may be less than that of the wireless
`15 charging circuit 375. In this case, the increase of the thick(cid:173)
`ness of the wireless power receiver 300 due to the thick(cid:173)
`nesses of the shielding unit 380 and the wireless charging
`circuit 375 can be prevented, so that the wireless power
`receiver 300 can be easily installed in the case of the
`20 portable terminal.
`FIG. 8(a) is a view showing a bottom surface of the
`wireless power receiver according to the embodiment and
`FIG. 8(b) is a view showing a top surface of the wireless
`power receiver according to the embodiment.
`FIG. 8(a) illustrates the arrangement of the printed circuit
`board 310, the receiving coil 310 and the short-range com(cid:173)
`munication antenna 340 according to the embodiment. The
`printed circuit board 301 has a reception space A in the
`central area, and the receiving coil 310 having a rectangular
`30 shape is disposed in the reception space A. The short-range
`communication antenna 340 is embedded in the printed
`circuit board 301. In this case, the increase of the thickness
`of the wireless power receiver 300 due to the thickness of the
`printed circuit board 301 and the short-range communication
`35 antenna 340 can be prevented, so that the wireless power
`receiver 300 can be easily installed in the case of the
`portable terminal.
`Further, the receiving coil 310 and the printed circuit
`board 301 may be manufactured such that the thickness of
`40 the receiving coil 310 may be equal to that of the printed
`circuit board 301 or the thickness of the receiving coil 310
`may be less than that of the printed circuit board 301. In this
`case, the increase of the thickness of the wireless power
`receiver 300 due to the thickness of the receiving coil 310
`45 and the printed circuit board 301 can be prevented, so that
`the wireless power receiver 300 can be easily installed in the
`case of the portable terminal.
`FIG. 8(b) illustrates the arrangement of the wireless
`charging circuit 375 and the shielding unit 380 according to
`50 the embodiment. The shielding unit 380 may have a recep(cid:173)
`tion space in a predetermined area thereof, and the wireless
`charging circuit 375 may be disposed in the reception space
`of the shielding unit 380.
`In the embodiment, the shielding unit 380 and the wireless
`55 charging circuit 375 may be manufactured such that the
`thickness of the wireless charging circuit 375 may be equal
`to that of the wireless charging circuit 375 or the thickness
`of the shielding unit 380 may be less than that of the wireless
`charging circuit 375. In this case, the increase of the thick-
`60 ness of the wireless power receiver 300 due to the thickness
`of the shielding unit 380 and the wireless charging circuit
`375 can be prevented, so that the wireless power receiver
`300 can be easily installed in the case of the portable
`terminal.
`Referring again to FIG. 4, although various technologies
`can be applied to a short-range communication protocol
`used in the wireless communication antenna 340 and a
`
`Ex.1008
`APPLE INC. / Page 16 of 19
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`US 10,069,346 B2
`
`7
`short-range are communication module 370 which will be
`described below, NFC (Near Field Communication) may be
`preferably used for the wireless communication antenna 340
`and the short-range communication module 370. The NFC is
`a technology for performing wireless communication in a
`short-range through the bandwidth of 13.56 MHz.
`The switch 350 is connected to the short-range commu(cid:173)
`nication antenna 340 and receives an open or short signal
`from the controller 390 to be described below such that the
`switch 350 may change a conducting state of the short-range 10
`communication antenna.
`If it is determined that the power is received from the