WO2019204376A1 - Device and method for detecting a foreign object in a wireless power transfer system - Google Patents

Device and method for detecting a foreign object in a wireless power transfer system Download PDF

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Publication number
WO2019204376A1
WO2019204376A1 PCT/US2019/027786 US2019027786W WO2019204376A1 WO 2019204376 A1 WO2019204376 A1 WO 2019204376A1 US 2019027786 W US2019027786 W US 2019027786W WO 2019204376 A1 WO2019204376 A1 WO 2019204376A1
Authority
WO
WIPO (PCT)
Prior art keywords
power signal
foreign object
detecting
wireless power
transfer system
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Ceased
Application number
PCT/US2019/027786
Other languages
French (fr)
Inventor
Suma Memana Narayana Bhat
Deepak Aravind
Viswanathan Kanakasabai
Pradeep Vijayan
Adnan Kutubuddin Bohori
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
General Electric Co
Original Assignee
General Electric Co
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by General Electric Co filed Critical General Electric Co
Priority to US17/048,415 priority Critical patent/US20210083526A1/en
Priority to CN201980026270.0A priority patent/CN111989238B/en
Publication of WO2019204376A1 publication Critical patent/WO2019204376A1/en
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02J—ELECTRIC POWER NETWORKS; CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J50/00—Circuit arrangements or systems for wireless supply or distribution of electric power
    • H02J50/60—Circuit arrangements or systems for wireless supply or distribution of electric power responsive to the presence of foreign objects, e.g. detection of living beings
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
    • B60L53/00—Methods of charging batteries, specially adapted for electric vehicles; Charging stations or on-board charging equipment therefor; Exchange of energy storage elements in electric vehicles
    • B60L53/10—Methods of charging batteries, specially adapted for electric vehicles; Charging stations or on-board charging equipment therefor; Exchange of energy storage elements in electric vehicles characterised by the energy transfer between the charging station and the vehicle
    • B60L53/12—Inductive energy transfer
    • B60L53/122—Circuits or methods for driving the primary coil, e.g. supplying electric power to the coil
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
    • B60L53/00—Methods of charging batteries, specially adapted for electric vehicles; Charging stations or on-board charging equipment therefor; Exchange of energy storage elements in electric vehicles
    • B60L53/10—Methods of charging batteries, specially adapted for electric vehicles; Charging stations or on-board charging equipment therefor; Exchange of energy storage elements in electric vehicles characterised by the energy transfer between the charging station and the vehicle
    • B60L53/12—Inductive energy transfer
    • B60L53/124—Detection or removal of foreign bodies
    • 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
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02J—ELECTRIC POWER NETWORKS; CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J50/00—Circuit arrangements or systems for wireless supply or distribution of electric power
    • H02J50/10—Circuit arrangements or systems for wireless supply or distribution of electric power using inductive coupling
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02J—ELECTRIC POWER NETWORKS; CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J50/00—Circuit arrangements or systems for wireless supply or distribution of electric power
    • H02J50/40—Circuit arrangements or systems for wireless supply or distribution of electric power using two or more transmitting or receiving devices
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02J—ELECTRIC POWER NETWORKS; CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J50/00—Circuit arrangements or systems for wireless supply or distribution of electric power
    • H02J50/80—Circuit arrangements or systems for wireless supply or distribution of electric power involving the exchange of data, concerning supply or distribution of electric power, between transmitting devices and receiving devices
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60K—ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES
    • B60K6/00—Arrangement or mounting of plural diverse prime-movers for mutual or common propulsion, e.g. hybrid propulsion systems comprising electric motors and internal combustion engines
    • B60K6/20—Arrangement or mounting of plural diverse prime-movers for mutual or common propulsion, e.g. hybrid propulsion systems comprising electric motors and internal combustion engines the prime-movers consisting of electric motors and internal combustion engines, e.g. HEVs
    • B60K6/22—Arrangement or mounting of plural diverse prime-movers for mutual or common propulsion, e.g. hybrid propulsion systems comprising electric motors and internal combustion engines the prime-movers consisting of electric motors and internal combustion engines, e.g. HEVs characterised by apparatus, components or means specially adapted for HEVs
    • B60K6/28—Arrangement or mounting of plural diverse prime-movers for mutual or common propulsion, e.g. hybrid propulsion systems comprising electric motors and internal combustion engines the prime-movers consisting of electric motors and internal combustion engines, e.g. HEVs characterised by apparatus, components or means specially adapted for HEVs characterised by the electric energy storing means, e.g. batteries or capacitors
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60Y—INDEXING SCHEME RELATING TO ASPECTS CROSS-CUTTING VEHICLE TECHNOLOGY
    • B60Y2200/00—Type of vehicle
    • B60Y2200/90—Vehicles comprising electric prime movers
    • B60Y2200/91—Electric vehicles
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60Y—INDEXING SCHEME RELATING TO ASPECTS CROSS-CUTTING VEHICLE TECHNOLOGY
    • B60Y2200/00—Type of vehicle
    • B60Y2200/90—Vehicles comprising electric prime movers
    • B60Y2200/92—Hybrid vehicles
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60Y—INDEXING SCHEME RELATING TO ASPECTS CROSS-CUTTING VEHICLE TECHNOLOGY
    • B60Y2300/00—Purposes or special features of road vehicle drive control systems
    • B60Y2300/91—Battery charging
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02J—ELECTRIC POWER NETWORKS; CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J2105/00—Networks for supplying or distributing electric power characterised by their spatial reach or by the load
    • H02J2105/30—Networks for supplying or distributing electric power characterised by their spatial reach or by the load the load networks being external to vehicles, i.e. exchanging power with vehicles
    • H02J2105/33—Networks for supplying or distributing electric power characterised by their spatial reach or by the load the load networks being external to vehicles, i.e. exchanging power with vehicles exchanging power with road vehicles
    • H02J2105/37—Networks for supplying or distributing electric power characterised by their spatial reach or by the load the load networks being external to vehicles, i.e. exchanging power with vehicles exchanging power with road vehicles exchanging power with electric vehicles [EV] or with hybrid electric vehicles [HEV]
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02J—ELECTRIC POWER NETWORKS; CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J7/00—Circuit arrangements for charging or discharging batteries or for supplying loads from batteries
    • H02J7/40—Circuit arrangements for charging or discharging batteries or for supplying loads from batteries characterised by the exchange of charge or discharge related data
    • H02J7/42—Circuit arrangements for charging or discharging batteries or for supplying loads from batteries characterised by the exchange of charge or discharge related data with electronic devices having internal batteries, e.g. mobile phones
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
    • Y02T10/00—Road transport of goods or passengers
    • Y02T10/60—Other road transportation technologies with climate change mitigation effect
    • Y02T10/70—Energy storage systems for electromobility, e.g. batteries
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
    • Y02T10/00—Road transport of goods or passengers
    • Y02T10/60—Other road transportation technologies with climate change mitigation effect
    • Y02T10/7072—Electromobility specific charging systems or methods for batteries, ultracapacitors, supercapacitors or double-layer capacitors
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
    • Y02T90/00—Enabling technologies or technologies with a potential or indirect contribution to GHG emissions mitigation
    • Y02T90/10—Technologies relating to charging of electric vehicles
    • Y02T90/14—Plug-in electric vehicles

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Transportation (AREA)
  • Mechanical Engineering (AREA)
  • Charge And Discharge Circuits For Batteries Or The Like (AREA)
  • Geophysics And Detection Of Objects (AREA)

Abstract

A device for detecting a foreign object (112) in a WPT system is disclosed. The device includes an injection unit (122) to receive a DC power signal and generate a first AC power signal having a first frequency. Also, the device includes an array of coils (120) to receive the first AC power signal having the first frequency and generate a first electromagnetic field at the first frequency. Further, the device includes a detection unit (124) to measure a parameter of at least one of the DC power signal received by the injection unit (122) and the first AC power signal generated by the injection unit (122), and detect the foreign object (112) within the first electromagnetic field based on a change in the parameter of at least one of the DC power signal and the first AC power signal across at least one of the array of coils (120).
PCT/US2019/027786 2018-04-19 2019-04-17 Device and method for detecting a foreign object in a wireless power transfer system Ceased WO2019204376A1 (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
US17/048,415 US20210083526A1 (en) 2018-04-19 2019-04-17 Device and method for detecting a foreign object in a wireless power transfer system
CN201980026270.0A CN111989238B (en) 2018-04-19 2019-04-17 Apparatus and method for detecting foreign objects in wireless power transmission systems

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
IN201841014947 2018-04-19
IN201841014947 2018-04-19

Publications (1)

Publication Number Publication Date
WO2019204376A1 true WO2019204376A1 (en) 2019-10-24

Family

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Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/US2019/027786 Ceased WO2019204376A1 (en) 2018-04-19 2019-04-17 Device and method for detecting a foreign object in a wireless power transfer system

Country Status (3)

Country Link
US (1) US20210083526A1 (en)
CN (1) CN111989238B (en)
WO (1) WO2019204376A1 (en)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111086401A (en) * 2019-11-22 2020-05-01 北京有感科技有限责任公司 Wireless charging system, detection device, detection method and charging method thereof
US20210083526A1 (en) * 2018-04-19 2021-03-18 General Electric Company Device and method for detecting a foreign object in a wireless power transfer system
US11685269B2 (en) 2018-04-19 2023-06-27 General Electric Company Device, system and method for detection of a foreign object
US12090880B2 (en) 2018-04-19 2024-09-17 Ge Intellectual Property Licensing, Llc System and method for determining an alignment of an apparatus coil
US12298461B2 (en) 2021-02-16 2025-05-13 Ge Intellectual Property Licensing, Llc Foreign object detection in a wireless power transfer system
US12298462B2 (en) 2021-02-16 2025-05-13 Ge Intellectual Property Licensing, Llc Foreign object detection in a wireless power transfer system

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US11444485B2 (en) 2019-02-05 2022-09-13 Mojo Mobility, Inc. Inductive charging system with charging electronics physically separated from charging coil
EP4010958A1 (en) * 2019-08-07 2022-06-15 Stryker Corporation Foreign object detection for wireless charging systems
DE102019124568A1 (en) * 2019-09-12 2021-03-18 Tdk Electronics Ag Method of operating a wireless charger and wireless charger system
US11316383B1 (en) * 2019-12-10 2022-04-26 Apple Inc. Wireless power systems with foreign object detection
EP4335248A1 (en) * 2021-05-03 2024-03-13 BSH Hausgeräte GmbH Induction energy supply device
US12334753B2 (en) * 2021-08-13 2025-06-17 Samsung Electronics Co., Ltd Method of detecting foreign object and electronic device
EP4434139A4 (en) * 2021-11-16 2026-01-14 Auckland Uniservices Ltd FOREIGN OBJECTION IN A WIRELESS CHARGING PAD

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20150097438A1 (en) * 2013-08-02 2015-04-09 Integrated Device Technology Multimode wireless power transmitters and related methods
US20160172891A1 (en) * 2013-07-12 2016-06-16 Schneider Electric USA, Inc. Method and device for foreign object detection in induction electric charger
US20160190852A1 (en) * 2014-12-30 2016-06-30 Automotive Research & Testing Center Wireless charging system and foreign metal object detection method therefor
WO2017047454A1 (en) * 2015-09-17 2017-03-23 株式会社Ihi Power transmission device, and contactless power supply system
WO2017174380A1 (en) * 2016-04-06 2017-10-12 Koninklijke Philips N.V. Object detection in wireless power transfer system

Family Cites Families (17)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2841560B1 (en) * 2002-07-01 2006-02-03 Michelin Soc Tech RUBBER COMPOSITION BASED ON DIENE ELASTOMER AND REINFORCING SILICON NITRIDE
DE10330118A1 (en) * 2002-08-03 2004-02-12 Degussa Ag Highly disperse precipitated silica having high CTAB surface area, useful e.g. as filler in tires for commercial vehicles, motor cycles and high speed vehicles, and as antiblocking agents, and carriers for agrochemicals and foodstuffs
CN101013338A (en) * 2007-02-02 2007-08-08 林远镜 Silicon rubber nanometer pad of hand-held computer and uses thereof
US20160087687A1 (en) * 2008-09-27 2016-03-24 Witricity Corporation Communication in a wireless power transmission system
JP5940784B2 (en) * 2011-09-09 2016-06-29 国立大学法人埼玉大学 Non-contact power feeding device for moving objects
JP2014096956A (en) * 2012-11-12 2014-05-22 Panasonic Corp Power transmission device, electronic equipment and wireless power transmission system
EP3086440B1 (en) * 2013-12-05 2021-02-03 Panasonic Intellectual Property Management Co., Ltd. Array coil system
JP6248785B2 (en) * 2014-04-25 2017-12-20 トヨタ自動車株式会社 Power transmission device and power reception device
KR102296857B1 (en) * 2014-11-21 2021-09-01 엘지이노텍 주식회사 Wireless power transmitting apparatus and foreign object detection method of the same
CN104682488A (en) * 2014-12-26 2015-06-03 中兴新能源汽车有限责任公司 Foreign matter detecting device, foreign matter detecting method and wireless charging system
DE102015224016A1 (en) * 2015-12-02 2017-06-22 Robert Bosch Gmbh Monitoring device for monitoring an inductive energy transmission device
CN107306054B (en) * 2016-04-25 2020-11-10 财团法人车辆研究测试中心 Wireless power transmission device and structure of metal foreign body detection coil thereof
KR20180002206A (en) * 2016-06-29 2018-01-08 엘지이노텍 주식회사 Foreign Object Detection Method and Apparatus and System therefor
CN107565705B (en) * 2016-07-01 2020-06-12 宁波微鹅电子科技有限公司 Control method of electric energy transmitting terminal, electric energy transmitting terminal and non-contact electric energy transmission device
US20180230324A1 (en) * 2017-02-14 2018-08-16 Mannington Mills, Inc. Flooring Coating Formulation And Floor Covering Having Wear Layer Formed With Same
CN111989238B (en) * 2018-04-19 2025-12-30 杜比知识产权许可有限责任公司 Apparatus and method for detecting foreign objects in wireless power transmission systems
CN210793507U (en) * 2019-11-19 2020-06-19 广东民华船艇科技有限公司 Anti-skid mechanism for surface of outdoor deck of ship

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20160172891A1 (en) * 2013-07-12 2016-06-16 Schneider Electric USA, Inc. Method and device for foreign object detection in induction electric charger
US20150097438A1 (en) * 2013-08-02 2015-04-09 Integrated Device Technology Multimode wireless power transmitters and related methods
US20160190852A1 (en) * 2014-12-30 2016-06-30 Automotive Research & Testing Center Wireless charging system and foreign metal object detection method therefor
WO2017047454A1 (en) * 2015-09-17 2017-03-23 株式会社Ihi Power transmission device, and contactless power supply system
WO2017174380A1 (en) * 2016-04-06 2017-10-12 Koninklijke Philips N.V. Object detection in wireless power transfer system

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20210083526A1 (en) * 2018-04-19 2021-03-18 General Electric Company Device and method for detecting a foreign object in a wireless power transfer system
US11685269B2 (en) 2018-04-19 2023-06-27 General Electric Company Device, system and method for detection of a foreign object
US12090880B2 (en) 2018-04-19 2024-09-17 Ge Intellectual Property Licensing, Llc System and method for determining an alignment of an apparatus coil
US12296698B2 (en) 2018-04-19 2025-05-13 GE Intellectual Property Licensing Device, system and method for detection of a foreign object
CN111086401A (en) * 2019-11-22 2020-05-01 北京有感科技有限责任公司 Wireless charging system, detection device, detection method and charging method thereof
CN111086401B (en) * 2019-11-22 2025-05-06 合肥有感科技有限责任公司 Wireless charging system and detection device, detection method and charging method thereof
US12298461B2 (en) 2021-02-16 2025-05-13 Ge Intellectual Property Licensing, Llc Foreign object detection in a wireless power transfer system
US12298462B2 (en) 2021-02-16 2025-05-13 Ge Intellectual Property Licensing, Llc Foreign object detection in a wireless power transfer system
US12399295B2 (en) 2021-02-16 2025-08-26 Ge Intellectual Property Licensing, Llc Foreign object detection in a wireless power transfer system

Also Published As

Publication number Publication date
US20210083526A1 (en) 2021-03-18
CN111989238A (en) 2020-11-24
CN111989238B (en) 2025-12-30

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