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`System Description
`Wireless Power Transfer
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`Volume I: Low Power
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`Part 1: Interface Definition
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`Version 1.1
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`March 2012
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`Page 1 of 7
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`Volkswagen Exhibit 1014
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`Version 1.1
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`
`System Description
`Wireless Power Transfer
`
`
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`
`
`
`
`System Description
`Wireless Power Transfer
`
`Volume I: Low Power
`
`Part 1: Interface Definition
`
`Version 1.1
`
`March 2012
`
` Wireless Power Consortium, March 2012
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` ©
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`Page 3 of 7
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`COPYRIGHT
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`System Description
`Wireless Power Transfer
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`Version 1.1
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`This System Description Wireless Power Transfer is published by the Wireless Power Consortium, and has
`been prepared by the members of the Wireless Power Consortium. All rights are reserved. Reproduction
`in whole or in part is prohibited without express and prior written permission of the Wireless Power
`Consortium.
`
`DISCLAIMER
`
`The information contained herein is believed to be accurate as of the date of publication. However, the
`Wireless Power Consortium will not be liable for any damages, including indirect or consequential, from
`use of this System Description Wireless Power Transfer or reliance on the accuracy of this document.
`
`NOTICE
`
`For any further explanation of the contents of this document, or in case of any perceived inconsistency or
`ambiguity of interpretation, or for any information regarding the associated patent license program,
`please contact: info@wirelesspowerconsortium.com.
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`© Wireless Power Consortium, March 2012
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`Version 1.1
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`System Description
`Wireless Power Transfer
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`General
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`Table of Contents
`1 General ................................................................................................................... 1
`1.1
`Scope ............................................................................................................................................................................................. 1
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`1.2 Main features ............................................................................................................................................................................. 1
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`1.3 Conformance and references ............................................................................................................................................. 1
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`1.4 Definitions .................................................................................................................................................................................. 2
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`1.5 Acronyms .................................................................................................................................................................................... 3
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`1.6
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`Symbols ........................................................................................................................................................................................ 3
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`1.7 Conventions ............................................................................................................................................................................... 4
`1.7.1
`Cross references ............................................................................................................................................................ 4
`1.7.2
`Informative text ............................................................................................................................................................. 4
`1.7.3
`Terms in capitals ........................................................................................................................................................... 4
`1.7.4
`Notation of numbers .................................................................................................................................................... 4
`1.7.5
`Units of physical quantities ...................................................................................................................................... 5
`1.7.6
`Bit ordering in a byte ................................................................................................................................................... 5
`1.7.7
`Byte numbering ............................................................................................................................................................. 5
`1.7.8 Multiple-bit Fields......................................................................................................................................................... 5
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`1.8 Operators .................................................................................................................................................................................... 5
`1.8.1
`Exclusive-OR ................................................................................................................................................................... 5
`1.8.2
`Concatenation ................................................................................................................................................................. 5
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`2 System Overview (Informative) .................................................................... 7
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`3 Basic Power Transmitter Designs ............................................................. 11
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`3.1
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`Introduction ............................................................................................................................................................................ 11
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`3.2 Power Transmitter designs that activate a single Primary Coil at a time ................................................... 11
`3.2.1
`Power Transmitter design A1 .............................................................................................................................. 11
`3.2.2
`Power Transmitter design A2 .............................................................................................................................. 16
`3.2.3
`Power Transmitter design A3 .............................................................................................................................. 20
`3.2.4
`Power Transmitter design A4 .............................................................................................................................. 23
`3.2.5
`Power Transmitter design A5 .............................................................................................................................. 28
`3.2.6
`Power Transmitter design A6 .............................................................................................................................. 32
`3.2.7
`Power Transmitter design A7 .............................................................................................................................. 37
`3.2.8
`Power Transmitter design A8 .............................................................................................................................. 40
`3.2.9
`Power Transmitter design A9 .............................................................................................................................. 45
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`3.3 Power Transmitter designs that activate multiple Primary Coils simultaneously ................................. 49
`3.3.1
`Power Transmitter design B1 .............................................................................................................................. 49
`3.3.2
`Power Transmitter design B2 .............................................................................................................................. 55
`3.3.3
`Power Transmitter design B3 .............................................................................................................................. 58
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`4 Power Receiver Design Requirements ..................................................... 63
`4.1
`Introduction ............................................................................................................................................................................ 63
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`4.2 Power Receiver design requirements ......................................................................................................................... 64
`4.2.1 Mechanical requirements ....................................................................................................................................... 64
`4.2.2
`Electrical requirements ........................................................................................................................................... 65
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`4.3 Power Receiver design guidelines (informative) ................................................................................................... 67
`4.3.1
`Large-signal resonance check .............................................................................................................................. 67
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` Wireless Power Consortium, March 2012
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`General
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`5 System Control ................................................................................................. 69
`5.1
`Introduction ............................................................................................................................................................................ 69
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`System Description
`Wireless Power Transfer
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`Version 1.1
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`5.2 Power Transmitter perspective ..................................................................................................................................... 72
`5.2.1
`Ping phase ..................................................................................................................................................................... 72
`5.2.2
`Identification & configuration phase ................................................................................................................. 74
`5.2.3
`Power transfer phase ............................................................................................................................................... 76
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`5.3 Power Receiver perspective ............................................................................................................................................ 81
`5.3.1
`Selection phase............................................................................................................................................................ 81
`5.3.2
`Ping phase ..................................................................................................................................................................... 82
`5.3.3
`Identification & configuration phase ................................................................................................................. 82
`5.3.4
`Power transfer phase ............................................................................................................................................... 83
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`6 Communications Interface ........................................................................... 85
`6.1
`Introduction ............................................................................................................................................................................ 85
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`6.2 Physical and data link layers ........................................................................................................................................... 85
`6.2.1 Modulation scheme ................................................................................................................................................... 85
`6.2.2
`Bit encoding scheme ................................................................................................................................................. 86
`6.2.3
`Byte encoding scheme ............................................................................................................................................. 86
`6.2.4
`Packet structure.......................................................................................................................................................... 86
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`6.3 Logical layer ............................................................................................................................................................................ 89
`6.3.1
`Signal Strength Packet (0x01) .............................................................................................................................. 89
`6.3.2
`End Power Transfer Packet (0x02) ................................................................................................................... 90
`6.3.3
`Control Error Packet (0x03) ................................................................................................................................. 91
`6.3.4
`Received Power Packet (0x04) ............................................................................................................................ 91
`6.3.5
`Charge Status Packet (0x05) ................................................................................................................................. 91
`6.3.6
`Power Control Hold-off Packet (0x06) ............................................................................................................. 92
`6.3.7
`Configuration Packet (0x51) ................................................................................................................................. 92
`6.3.8
`Identification Packet (0x71) ................................................................................................................................. 93
`6.3.9
`Extended Identification Packet (0x81) ............................................................................................................ 94
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`Annex A Example Power Receiver Designs (Informative) .................... 95
`A.1 Power Receiver example 1 ............................................................................................................................................... 95
`A.1.1 Mechanical details ..................................................................................................................................................... 95
`A.1.2
`Electrical details ......................................................................................................................................................... 96
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`A.2 Power Receiver example 2 ............................................................................................................................................... 98
`A.2.1 Mechanical details ..................................................................................................................................................... 98
`A.2.2
`Electrical details ......................................................................................................................................................... 99
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`Annex B Object Detection (Informative) ................................................... 101
`B.1 Resonance shift ...................................................................................................................................................................101
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`B.2 Capacitance change ...........................................................................................................................................................102
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`Annex C Power Receiver Localization (Informative) ........................... 103
`C.1 Guided Positioning .............................................................................................................................................................103
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`C.2 Primary Coil array based Free Positioning .............................................................................................................103
`C.2.1
`A single Power Receiver covering multiple Primary Cells ....................................................................103
`C.2.2
`Two Power Receivers covering two adjacent Primary Cells ................................................................104
`C.2.3
`Two Power Receivers covering a single Primary Cell .............................................................................104
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`C.3 Moving Primary Coil based Free Positioning .........................................................................................................105
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`© Wireless Power Consortium, March 2012
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`Annex D Foreign Object Detection (Normative) ..................................... 107
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`System Description
`Wireless Power Transfer
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`General
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`Annex E Mechanical Design Guidelines (Informative) ......................... 109
`E.1 Base Station ...........................................................................................................................................................................109
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`E.2 Mobile Device .......................................................................................................................................................................109
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`Annex F History of Changes ........................................................................... 111
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` Wireless Power Consortium, March 2012
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