(12) United States Patent
`Partoviet al.
`
`(10) Patent No.:
`(45) Date of Patent:
`
`US 8,169,185 B2
`*May 1, 2012
`
`USOO81691.85B2
`
`(54) SYSTEMAND METHOD FOR INDUCTIVE
`CHARGING OF PORTABLE DEVICES
`
`(75) Inventors: Afshin Partovi, Sunnyvale, CA (US);
`Michael Sears, Ben Lomond, CA (US)
`(73) Assignee: Mojo Mobility, Inc., Sunnyvale, CA
`(US)
`Subject to any disclaimer, the term of this
`patent is extended or adjusted under 35
`U.S.C. 154(b) by 859 days.
`This patent is Subject to a terminal dis
`claimer.
`
`Notice:
`
`(*)
`
`(21)
`(22)
`(65)
`
`Appl. No.: 12/116,876
`Filed:
`May 7, 2008
`
`Prior Publication Data
`US 2009/OO964 13 A1
`Apr. 16, 2009
`
`(60)
`
`Related U.S. Application Data
`(63) Continuation-in-part of application No. 1 1/669,113,
`filed on Jan. 30, 2007, now Pat. No. 7,952,322.
`Provisional application No. 60/763,816, filed on Jan.
`31, 2006, provisional application No. 60/810,262,
`filed on Jun. 1, 2006, provisional application No.
`60/810,298, filed on Jun. 1, 2006, provisional
`application No. 60/868,674, filed on Dec. 5, 2006,
`provisional application No. 60/916,748, filed on May
`8, 2007, provisional application No. 60/952,835, filed
`on Jul. 30, 2007, provisional application No.
`61/012,922, filed on Dec. 12, 2007, provisional
`application No. 61/012,924, filed on Dec. 12, 2007,
`provisional application No. 61/015,606, filed on Dec.
`20, 2007, provisional application No. 61/043,027,
`filed on Apr. 7, 2008.
`(51) Int. Cl.
`(2006.01)
`HIM I/46
`(52) U.S. Cl. ....................................................... 32O/108
`
`(58) Field of Classification Search .................. 320/107,
`320/108, 112, 114, 115, 150, 180
`See application file for complete search history.
`References Cited
`
`(56)
`
`U.S. PATENT DOCUMENTS
`3,938,018 A
`2, 1976 Dahl
`(Continued)
`
`JP
`
`FOREIGN PATENT DOCUMENTS
`408000838
`11, 2011
`(Continued)
`OTHER PUBLICATIONS
`Hui. “A New Generation of Universal Contactless Battery Charging
`Platform for Portable Consumer Electronic Equipment', IEEE
`Transactions on Power Electronics, vol. 20, No. 3, May 2005, pp.
`620-627, 8 pages.
`
`(Continued)
`Primary Examiner — Edward Tso
`(74) Attorney, Agent, or Firm — Fliesler Meyer LLP
`(57)
`ABSTRACT
`A system and method for variable power transfer in an induc
`tive charging or power system. In accordance with an
`embodiment the system comprises a pad or similar base unit
`that contains a primary, which creates an alternating magnetic
`field. A receiver comprises a means for receiving the energy
`from the alternating magnetic field from the pad and trans
`ferring it to a mobile device, battery, or other device. In
`accordance with various embodiments, additional features
`can be incorporated into the system to provide greater power
`transfer efficiency, and to allow the system to be easily modi
`fied for applications that have different power requirements.
`These include variations in the material used to manufacture
`the primary and/or the receiver coils; modified circuit designs
`to be used on the primary and/or receiverside; and additional
`circuits and components that perform specialized tasks. Such
`as mobile device or battery identification, and automatic volt
`age or power-setting for different devices or batteries.
`50 Claims, 50 Drawing Sheets
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`Receiver
`
`Momentum Dynamics Corporation
`Exhibit 1019
`Page 001
`
`

`

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`Momentum Dynamics Corporation
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`
`

`

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`Momentum Dynamics Corporation
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`
`

`

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`Exhibit 1019
`Page 004
`
`

`

`US 8,169,185 B2
`Page 5
`
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`
`Momentum Dynamics Corporation
`Exhibit 1019
`Page 005
`
`

`

`U.S. Patent
`
`May 1, 2012
`
`Sheet 1 of 50
`
`US 8,169,185 B2
`
`104
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`Momentum Dynamics Corporation
`Exhibit 1019
`Page 006
`
`

`

`U.S. Patent
`
`May 1, 2012
`
`Sheet 2 of 50
`
`US 8,169,185 B2
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`140
`
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`
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`FG, 4
`
`Momentum Dynamics Corporation
`Exhibit 1019
`Page 007
`
`

`

`U.S. Patent
`
`May 1, 2012
`
`Sheet 3 Of 50
`
`US 8,169,185 B2
`
`162
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`Momentum Dynamics Corporation
`Exhibit 1019
`Page 008
`
`

`

`U.S. Patent
`
`May 1, 2012
`
`Sheet 4 of 50
`
`US 8,169,185 B2
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`Shell/Cover
`194
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`192
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`Momentum Dynamics Corporation
`Exhibit 1019
`Page 009
`
`

`

`U.S. Patent
`
`May 1, 2012
`
`Sheet 5 Of 50
`
`US 8,169,185 B2
`
`Receiver
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`Current
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`
`FIG 10
`
`Momentum Dynamics Corporation
`Exhibit 1019
`Page 010
`
`

`

`U.S. Patent
`
`May 1, 2012
`
`Sheet 6 of 50
`
`US 8,169,185 B2
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`296
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`Momentum Dynamics Corporation
`Exhibit 1019
`Page 011
`
`

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`Momentum Dynamics Corporation
`
`Momentum Dynamics Corporation
`Exhibit 1019
`Page 012
`
`

`

`U.S. Patent
`
`May 1, 2012
`
`Sheet 8 of 50
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`US 8,169,185 B2
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`Momentum Dynamics Corporation
`Exhibit 1019
`Page 013
`
`

`

`U.S. Patent
`
`May 1, 2012
`
`Sheet 9 Of 50
`
`US 8,169,185 B2
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`Momentum Dynamics Corporation
`Exhibit 1019
`Page 014
`
`

`

`U.S. Patent
`
`May 1, 2012
`
`Sheet 10 Of 50
`
`US 8,169,185 B2
`
`
`
`Momentum Dynamics Corporation
`Exhibit 1019
`Page 015
`
`

`

`U.S. Patent
`
`May 1, 2012
`
`Sheet 11 of 50
`
`US 8,169,185 B2
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`Momentum Dynamics Corporation
`Exhibit 1019
`Page 016
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`

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`U.S. Patent
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`Momentum Dynamics Corporation
`Exhibit 1019
`Page 017
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`Exhibit 1019
`Page 018
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`May 1, 2012
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`Exhibit 1019
`Page 021
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`Momentum Dynamics Corporation
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`Page 021
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`U.S. Patent
`
`May 1, 2012
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`Sheet 17 of 50
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`US 8,169,185 B2
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`Momentum Dynamics Corporation
`Exhibit 1019
`Page 022
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`

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`U.S. Patent
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`May 1, 2012
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`Exhibit 1019
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`Momentum Dynamics Corporation
`Exhibit 1019
`Page 024
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`US 8,169,185 B2
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`Exhibit 1019
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`Momentum Dynamics Corporation
`Exhibit 1019
`Page 028
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`May 1, 2012
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`Momentum Dynamics Corporation
`Exhibit 1019
`Page 029
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`U.S. Patent
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`May 1, 2012
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`Sheet 25 Of 50
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`Momentum Dynamics Corporation
`Exhibit 1019
`Page 030
`
`

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`U.S. Patent
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`May 1, 2012
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`Momentum Dynamics Corporation
`Exhibit 1019
`Page 031
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`U.S. Patent
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`May 1, 2012
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`US 8,169,185 B2
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`Momentum Dynamics Corporation
`Exhibit 1019
`Page 032
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`U.S. Patent
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`Page 033
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`U.S. Patent
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`May 1, 2012
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`Page 034
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`Momentum Dynamics Corporation
`Exhibit 1019
`Page 034
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`

`U.S. Patent
`
`May 1, 2012
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`Sheet 30 Of 50
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`US 8,169,185 B2
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`Page 035
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`U.S. Patent
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`May 1, 2012
`
`Sheet 31 Of 50
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`Exhibit 1019
`Page 036
`
`

`

`U.S. Patent
`
`May 1, 2012
`
`Sheet 32 of 50
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`US 8,169,185 B2
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`Momentum Dynamics Corporation
`Exhibit 1019
`Page 037
`
`

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`U.S. Patent
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`May 1, 2012
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`Page 038
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`U.S. Patent
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`May 1, 2012
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`Exhibit 1019
`Page 039
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`

`

`U.S. Patent
`
`US 8,169,185 B2
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`Momentum Dynamics Corporation
`Exhibit 1019
`Page 040
`
`

`

`U.S. Patent
`
`
`
`US 8,169,185 B2
`
`
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`Momentum Dynamics Corporation
`Exhibit 1019
`Page 041
`
`

`

`U.S. Patent
`
`May 1, 2012
`
`Sheet 37 Of 50
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`US 8,169,185 B2
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`Momentum Dynamics Corporation
`Exhibit 1019
`Page 042
`
`

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`U.S. Patent
`
`May 1, 2012
`
`Sheet 38 of 50
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`US 8,169,185 B2
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`Momentum Dynamics Corporation
`Exhibit 1019
`Page 043
`
`

`

`U.S. Patent
`
`May 1, 2012
`
`Sheet 39 Of 50
`
`US 8,169,185 B2
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`1E--O3
`
`al
`
`s
`E--04
`
`f
`s
`E-4-06
`E--05
`Frequency (Hz)
`
`F.G. 53
`
`Momentum Dynamics Corporation
`Exhibit 1019
`Page 044
`
`

`

`U.S. Patent
`
`May 1, 2012
`
`Sheet 40 of 50
`
`US 8,169,185 B2
`
`860
`100 S -- Aluminum
`Scs
`------- Copper
`
`s 95.
`s s
`
`90
`
`O
`to
`S.
`E 80
`75
`
`85
`
`O
`
`864-
`Alignment
`Magnets
`
`
`
`5
`10
`15
`layer Thickness (in)
`
`20
`
`F.G. 54.
`
`Alignment
`Magnets
`
`Alignment
`Magnets
`
`Alignment
`Magnets
`
`Alignment
`Magnets
`
`Alignment
`Magnets
`
`F.G. 55
`
`Momentum Dynamics Corporation
`Exhibit 1019
`Page 045
`
`

`

`U.S. Patent
`
`May 1, 2012
`
`Sheet 41 of 50
`
`US 8,169,185 B2
`
`858
`
`Sectioned Alignment Sectioned Alignment Sectioned Alignment
`Magnets
`Magnets
`Magnets
`
`Y
`
`Sectioned Alignment
`Magnets
`872-
`Pairs of Alignment
`Magnets
`
`
`
`Sectioned Alignment
`Magnets
`
`x
`k
`Pairs of Alignment
`Magnets
`
`Sectioned Alignment
`Magnets
`F.G. 56
`Pairs of Alignment
`Magnets
`
`Pairs of Alignment
`Magnets
`
`Pairs of Alignment
`Magnets
`
`Pairs of Alignment
`Magnets
`
`F.G. 57
`
`Momentum Dynamics Corporation
`Exhibit 1019
`Page 046
`
`

`

`U.S. Patent
`
`May 1, 2012
`
`Sheet 42 of 50
`
`US 8,169,185 B2
`
`Electronics
`
`64 N-q60
`Battery
`
`Solar Ce:
`76
`
`
`
`N
`.
`
`(EE 4. 2S
`Ces f E.
`-
`S. s S
`...
`Y a SS N
`s
`S)
`NS 2 |W
`ER
`e
`-----
`H2SH72SH2S
`( S) ) C 6 ) H
`YSN Y
`S2. Nasa 22
`Nga
`E
`ordess Mojo
`Solar Cells
`
`Momentum Dynamics Corporation
`Exhibit 1019
`Page 047
`
`

`

`U.S. Patent
`
`May 1, 2012
`
`Sheet 43 of 50
`
`US 8,169,185 B2
`
`||||||||||||||||||||
`
`Soar Cells
`
`Electronics
`
`484
`
`Electronics
`
`
`
`
`
`
`
`FG. W
`
`Mom