CA3128935A1 - Secondary coil topology - Google Patents

Secondary coil topology Download PDF

Info

Publication number
CA3128935A1
CA3128935A1 CA3128935A CA3128935A CA3128935A1 CA 3128935 A1 CA3128935 A1 CA 3128935A1 CA 3128935 A CA3128935 A CA 3128935A CA 3128935 A CA3128935 A CA 3128935A CA 3128935 A1 CA3128935 A1 CA 3128935A1
Authority
CA
Canada
Prior art keywords
coil
conductors
coils
conductor
ferrite
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.)
Pending
Application number
CA3128935A
Other languages
English (en)
French (fr)
Inventor
Ralf EFFENBERGER
Jurgen Schulte
Gerold Snieders
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.)
IABG Industrieanlagen Betriebs GmbH
Original Assignee
IABG Industrieanlagen Betriebs GmbH
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 IABG Industrieanlagen Betriebs GmbH filed Critical IABG Industrieanlagen Betriebs GmbH
Publication of CA3128935A1 publication Critical patent/CA3128935A1/en
Pending legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F27/00—Details of transformers or inductances, in general
    • H01F27/24—Magnetic cores
    • H01F27/255—Magnetic cores made from particles
    • 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
    • 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
    • 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
    • B60L53/30—Constructional details of charging stations
    • B60L53/35—Means for automatic or assisted adjustment of the relative position of charging devices and vehicles
    • B60L53/38—Means for automatic or assisted adjustment of the relative position of charging devices and vehicles specially adapted for charging by inductive energy transfer
    • B60L53/39—Means for automatic or assisted adjustment of the relative position of charging devices and vehicles specially adapted for charging by inductive energy transfer with position-responsive activation of primary coils
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F27/00—Details of transformers or inductances, in general
    • H01F27/34—Special means for preventing or reducing unwanted electric or magnetic effects, e.g. no-load losses, reactive currents, harmonics, oscillations, leakage fields
    • H01F27/36—Electric or magnetic shields or screens
    • H01F27/366—Electric or magnetic shields or screens made of ferromagnetic material
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F27/00—Details of transformers or inductances, in general
    • H01F27/34—Special means for preventing or reducing unwanted electric or magnetic effects, e.g. no-load losses, reactive currents, harmonics, oscillations, leakage fields
    • H01F27/38—Auxiliary core members; Auxiliary coils or windings
    • 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
    • H02J50/10—Circuit arrangements or systems for wireless supply or distribution of electric power using inductive coupling
    • H02J50/12—Circuit arrangements or systems for wireless supply or distribution of electric power using inductive coupling of the resonant type
    • 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
    • H02J7/70—Circuit arrangements for charging or discharging batteries or for supplying loads from batteries characterised by the mechanical construction
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B5/00—Near-field transmission systems, e.g. inductive or capacitive transmission systems
    • H04B5/20—Near-field transmission systems, e.g. inductive or capacitive transmission systems characterised by the transmission technique; characterised by the transmission medium
    • H04B5/24—Inductive coupling
    • H04B5/26—Inductive coupling using coils
    • H04B5/263—Multiple coils at either side
    • 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
    • B60L2270/00—Problem solutions or means not otherwise provided for
    • B60L2270/10—Emission reduction
    • B60L2270/14—Emission reduction of noise
    • B60L2270/147—Emission reduction of noise electro magnetic [EMI]
    • 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]
    • 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
    • Y02T90/12—Electric charging stations
    • 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)
  • Signal Processing (AREA)
  • Coils Of Transformers For General Uses (AREA)
  • Coils Or Transformers For Communication (AREA)
  • Electric Propulsion And Braking For Vehicles (AREA)
  • Current-Collector Devices For Electrically Propelled Vehicles (AREA)
CA3128935A 2019-02-04 2020-01-30 Secondary coil topology Pending CA3128935A1 (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE102019102654.7A DE102019102654A1 (de) 2019-02-04 2019-02-04 Sekundärspulentopologie
DE102019102654.7 2019-02-04
PCT/EP2020/052242 WO2020160989A1 (de) 2019-02-04 2020-01-30 Sekundärspulentopologie

Publications (1)

Publication Number Publication Date
CA3128935A1 true CA3128935A1 (en) 2020-08-13

Family

ID=69468537

Family Applications (1)

Application Number Title Priority Date Filing Date
CA3128935A Pending CA3128935A1 (en) 2019-02-04 2020-01-30 Secondary coil topology

Country Status (7)

Country Link
US (1) US12573548B2 (enExample)
EP (1) EP3921859B1 (enExample)
JP (2) JP2022519674A (enExample)
CN (1) CN113661550B (enExample)
CA (1) CA3128935A1 (enExample)
DE (1) DE102019102654A1 (enExample)
WO (1) WO2020160989A1 (enExample)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2024197688A1 (en) * 2023-03-30 2024-10-03 Renesas Electronics America Inc. Split planar coil for wireless power transfer

Family Cites Families (23)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102009013103B4 (de) * 2009-03-03 2012-08-02 Sew-Eurodrive Gmbh & Co. Kg Anlage mit über den Boden bewegbaren Fahrzeugen
US9953761B2 (en) * 2011-05-03 2018-04-24 Phoenix Contact Gmbh & Co. Kg Arrangement and method for contactless energy transmission with a coupling-minimized matrix of planar transmission coils
US9676285B2 (en) * 2013-05-01 2017-06-13 Qualcomm Incorporated Vehicle charging pad having reduced thickness
DK2863429T3 (en) * 2013-10-16 2017-09-04 ERICSSON TELEFON AB L M (publ) Adjustable inductor device, transceiver, method and computer program
JP6179375B2 (ja) * 2013-11-28 2017-08-16 Tdk株式会社 コイルユニット
US9780573B2 (en) 2014-02-03 2017-10-03 Witricity Corporation Wirelessly charged battery system
EP3192089B1 (en) * 2014-09-11 2022-02-02 Auckland UniServices Limited Magnetic flux coupling structures with controlled flux cancellation
US9912172B2 (en) 2015-01-14 2018-03-06 Qualcomm Incorporated Asymmetrically layered stacked coils and/or chamfered ferrite in wireless power transfer applications
DE102015103590A1 (de) * 2015-03-11 2016-09-15 Paul Vahle Gmbh & Co. Kg Drehwinkelunabhängige Sekundäreinrichtung zur berührungslosen Energieübertragung
US10131236B2 (en) 2015-04-17 2018-11-20 Lear Corporation Wireless charging magnetic structure
CN109155535B (zh) 2016-03-10 2022-07-26 无线先进车辆电气化有限公司 双平面无线功率传输垫
TWI583986B (zh) 2016-03-11 2017-05-21 Oncque Corp Photoelectric diagonal material detection device
DE102016211198A1 (de) 2016-06-22 2017-12-28 Robert Bosch Gmbh Vorrichtung zur induktiven Energieübertragung
US10074891B2 (en) * 2016-09-02 2018-09-11 AQ Corporation Smartphone antenna in flexible PCB
US10144302B2 (en) * 2016-09-23 2018-12-04 Qualcomm Incorporated Twisted wire for power charging
DE102016223534A1 (de) * 2016-11-28 2018-05-30 SUMIDA Components & Modules GmbH Induktives Bauelement und Sekundärresonatoreinrichtung zur Montage an einem Elektrokraftfahrzeug
US10804726B2 (en) * 2017-01-15 2020-10-13 Chargedge, Inc. Wheel coils and center-tapped longitudinal coils for wireless power transfer
EP3385964B1 (en) * 2017-04-03 2019-10-02 Ningbo Geely Automobile Research & Development Co. Ltd. A device for a wireless power transfer system
EP3438996B1 (en) * 2017-08-02 2021-09-22 Ningbo Geely Automobile Research & Development Co., Ltd. A device for a wireless power transfer system for a vehicle
US20200021144A1 (en) * 2018-07-16 2020-01-16 Witricity Corporation Method and system for reducing magnetic field emissions from double-d couplers
US11115084B2 (en) * 2018-11-27 2021-09-07 Allegro Microsystems, Llc Isolated data transfer system
US20220123593A1 (en) * 2019-02-15 2022-04-21 Xnergy Autonomous Power Technologies Pte. Ltd. Wireless Power Transfer Based on Magnetic Induction
KR102830662B1 (ko) * 2020-09-15 2025-07-07 삼성전자 주식회사 안테나의 동작 범위를 넓히기 위한 전자 장치

Also Published As

Publication number Publication date
US20220028606A1 (en) 2022-01-27
JP2022519674A (ja) 2022-03-24
EP3921859B1 (de) 2025-07-30
EP3921859C0 (de) 2025-07-30
DE102019102654A1 (de) 2020-08-06
WO2020160989A1 (de) 2020-08-13
CN113661550A (zh) 2021-11-16
CN113661550B (zh) 2024-05-03
JP2025083356A (ja) 2025-05-30
EP3921859A1 (de) 2021-12-15
US12573548B2 (en) 2026-03-10

Similar Documents

Publication Publication Date Title
JP5240786B2 (ja) 非接触給電装置
US9716386B2 (en) Contactless power supply system
US9517697B2 (en) Providing a vehicle with electric energy using a receiving device adapted to receive an alternating electromagnetic field
US11228164B2 (en) Cable bearing element, arrangement of cable bearing elements and method of manufacturing a cable bearing element
CN112002532B (zh) 一种电动汽车无线充电的发射组件和充电组件结构
JP2010172084A (ja) 非接触給電装置
JP2014526137A (ja) 非接触誘導型エネルギー伝達のためのフラット・コイル
CN101454957A (zh) 非接触式能量传输系统
US10726991B2 (en) Coil unit for contactless power supply
JPWO2013099221A1 (ja) 非接触充電装置
JP2018527739A (ja) 複数の巻線構造の一次側および二次側構成、誘導電力伝達用のシステム、および電力を車両に誘導的に供給する方法
JP2013051285A5 (enExample)
US12573548B2 (en) Secondary coil topology
US10647215B2 (en) Balanced coil for multi-filar windings
Ibrahim et al. Intelligent Geometric Alignment and Dimensions-Guided Approach for Design Optimization for Efficiency Improvement of WPT Systems
JP2022150081A (ja) リーケージトランス
WO2019115695A1 (en) A method of manufacturing a winding structure unit and such a winding structure unit
KR20200052034A (ko) 무선 충전 패드 및 무선 충전 장치
WO2024095508A1 (ja) 静止電磁機器及び静止電磁機器を用いた双方向ｄｃ－ｄｃコンバータ
WO2024106455A1 (ja) コイル部品及びその製造方法、送電装置、受電装置、並びに電力伝送システム
KR20200052033A (ko) 무선 충전 패드 및 무선 충전 장치
HK1199327B (en) Providing a vehicle with electric energy using a receiving device adapted to receive an alternating electromagnetic field

Legal Events

Date Code Title Description
EEER Examination request

Effective date: 20240130

MFA Maintenance fee for application paid

Free format text: FEE DESCRIPTION TEXT: MF (APPLICATION, 5TH ANNIV.) - STANDARD

Year of fee payment: 5

U00 Fee paid

Free format text: ST27 STATUS EVENT CODE: A-2-2-U10-U00-U101 (AS PROVIDED BY THE NATIONAL OFFICE); EVENT TEXT: MAINTENANCE REQUEST RECEIVED

Effective date: 20241206

U11 Full renewal or maintenance fee paid

Free format text: ST27 STATUS EVENT CODE: A-2-2-U10-U11-U102 (AS PROVIDED BY THE NATIONAL OFFICE); EVENT TEXT: MAINTENANCE FEE PAYMENT DETERMINED COMPLIANT

Effective date: 20241206

Free format text: ST27 STATUS EVENT CODE: A-2-2-U10-U11-U102 (AS PROVIDED BY THE NATIONAL OFFICE); EVENT TEXT: MAINTENANCE FEE PAYMENT PAID IN FULL

Effective date: 20241206

D15 Examination report completed

Free format text: ST27 STATUS EVENT CODE: A-2-2-D10-D15-D126 (AS PROVIDED BY THE NATIONAL OFFICE); EVENT TEXT: EXAMINER'S REPORT

Effective date: 20250211

P11 Amendment of application requested

Free format text: ST27 STATUS EVENT CODE: A-2-2-P10-P11-P100 (AS PROVIDED BY THE NATIONAL OFFICE); EVENT TEXT: AMENDMENT RECEIVED - RESPONSE TO EXAMINER'S REQUISITION

Effective date: 20250609

W00 Other event occurred

Free format text: ST27 STATUS EVENT CODE: A-2-2-W10-W00-W111 (AS PROVIDED BY THE NATIONAL OFFICE); EVENT TEXT: CORRESPONDENT DETERMINED COMPLIANT

Effective date: 20250610

P11 Amendment of application requested

Free format text: ST27 STATUS EVENT CODE: A-2-2-P10-P11-P102 (AS PROVIDED BY THE NATIONAL OFFICE); EVENT TEXT: AMENDMENT DETERMINED COMPLIANT

Effective date: 20250926

P13 Application amended

Free format text: ST27 STATUS EVENT CODE: A-2-2-P10-P13-X000 (AS PROVIDED BY THE NATIONAL OFFICE); EVENT TEXT: APPLICATION AMENDED

Effective date: 20250926

MFA Maintenance fee for application paid

Free format text: FEE DESCRIPTION TEXT: MF (APPLICATION, 6TH ANNIV.) - STANDARD

Year of fee payment: 6

U00 Fee paid

Free format text: ST27 STATUS EVENT CODE: A-2-2-U10-U00-U101 (AS PROVIDED BY THE NATIONAL OFFICE); EVENT TEXT: MAINTENANCE REQUEST RECEIVED

Effective date: 20251216

U11 Full renewal or maintenance fee paid

Free format text: ST27 STATUS EVENT CODE: A-2-2-U10-U11-U102 (AS PROVIDED BY THE NATIONAL OFFICE); EVENT TEXT: MAINTENANCE FEE PAYMENT PAID IN FULL

Effective date: 20251216