KR20190056794A - Resonant capacitor connection method for 4-coil wireless power transfer apparatus - Google Patents

Resonant capacitor connection method for 4-coil wireless power transfer apparatus Download PDF

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KR20190056794A
KR20190056794A KR1020170154099A KR20170154099A KR20190056794A KR 20190056794 A KR20190056794 A KR 20190056794A KR 1020170154099 A KR1020170154099 A KR 1020170154099A KR 20170154099 A KR20170154099 A KR 20170154099A KR 20190056794 A KR20190056794 A KR 20190056794A
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South Korea
Prior art keywords
coil
wireless power
present
resonant capacitor
coil wireless
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KR1020170154099A
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Korean (ko)
Inventor
이자현
정구호
송보윤
이충희
조동호
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한국과학기술원
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Priority to KR1020170154099A priority Critical patent/KR20190056794A/en
Publication of KR20190056794A publication Critical patent/KR20190056794A/en

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    • 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
    • B60L50/00—Electric propulsion with power supplied within the vehicle
    • B60L50/40—Electric propulsion with power supplied within the vehicle using propulsion power supplied by capacitors
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02J—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
    • 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
    • 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
    • Y02T90/122—

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  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Transportation (AREA)
  • Mechanical Engineering (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Electric Propulsion And Braking For Vehicles (AREA)

Abstract

The present invention relates to a resonant capacitor coupling method of a 4-coil wireless power collecting apparatus. According to the present invention, provided are a capacitor bank and a switch structure, wherein the capacitor bank produces resonance with a fixed frequency in accordance with varying inductance during the mode switching of a 4-coil power collecting system which is a power feeding system and a current collecting system having improved remote power transmission efficiency while satisfying standard compatibility.

Description

4-코일 무선 급집전 장치의 공진 커패시터 결합 방법{RESONANT CAPACITOR CONNECTION METHOD FOR 4-COIL WIRELESS POWER TRANSFER APPARATUS}BACKGROUND OF THE INVENTION 1. Field of the Invention [0001] The present invention relates to a resonant capacitor coupling method for a 4-

본 발명은 4-코일 무선 급집전 장치의 공진 커패시터 결합 방법에 관한 것이다.The present invention relates to a method of coupling a resonant capacitor of a 4-coil wireless power collector.

일반적인 전기차 충전을 위한 무선전력전송시스템은 인버터, 급전 코일, 급전 공진 커패시터, 집전 코일, 집전 공진 커패시터, 정류기로 이루어져 있다. 인버터와 급전 코일, 급전 공진 커패시터는 지표면에 위치하며, 집전 코일, 집전 커패시터, 정류기는 차량에 위치한다. 일반적으로 급전 코일과 집전 코일이 정중앙을 기준으로 정렬되어 있을 때(이하 정위치) 최대 전송효율을 갖는다. 또한, 급전 코일과 집전 코일이 정중앙을 기준으로 멀어지는 방향으로 비정렬됨에 따라(이하 편차위치) 효율이 감소하게 된다. A wireless power transmission system for charging an electric car generally consists of an inverter, a feed coil, a feed resonance capacitor, a collector coil, a collector resonance capacitor, and a rectifier. The inverter, the feed coils, and the feed resonant capacitors are located on the ground surface, and the current collecting coil, the current collecting capacitor, and the rectifier are located in the vehicle. Generally, when the feeding coils and the current collecting coils are aligned with respect to the center (hereafter referred to as a "fixed position"), the maximum transmission efficiency is obtained. In addition, as the power supply coils and the current collecting coils are misaligned in the direction away from the center, the efficiency decreases (deviation position).

종래의 전통적인 원형 코일을 구비한 집전 시스템과 급전 시스템에 기초한 무선전력전송 방식은 원거리 충전, 즉, 집전 시스템과 급전 시스템 사이에 편차가 발생할 경우에 충전이 어려운 문제가 있다.Conventional power collecting systems including a conventional circular coil and a power feeding system based on the power feeding system have a problem in that they are difficult to be charged when a variation occurs between the power collecting system and the power feeding system.

KRKR 10-143606310-1436063 B1B1

본 발명은 이와 같은 문제점을 해결하기 위해 창안된 것으로서, 표준 호환성을 만족하면서도 원거리 무선전력전송 효율이 개선된 급전 시스템 및 집전 시스템인 4-coil 급집전 시스템의 모드 전환시 변화하는 인덕턴스에 맞춰 고정된 주파수로 공진 하도록하는 커패시터 뱅크와 스위치 구조를 제공하는데 그 목적이 있다.SUMMARY OF THE INVENTION The present invention has been made to overcome the above problems, and it is an object of the present invention to provide a four-coil power collecting system, which is a power feeding system and a power collecting system, And to provide a capacitor bank and a switch structure that resonate at a frequency.

이와 같은 목적을 달성하기 위하여 본 발명에 따른 4-coil 무선 전력 급집전 장치에서 모드 전환과 정합을 위한 커패시터 모듈 구조를 제안한다.In order to achieve the above object, a capacitor module structure for mode switching and matching in a 4-coil wireless power feeder according to the present invention is proposed.

본 발명의 다른 측면에 따르면, 4-coil 무선전력 급집전 장치에서 모드 전환을 위한 스위치 연결 구조 및 이를 제어하는 방법을 제안한다According to another aspect of the present invention, a switch connection structure for mode switching in a 4-coil wireless power feeder and a method of controlling the same are proposed

본 발명에 의하면, 표준 호환성을 만족하면서도 원거리 무선전력전송 효율이 개선된 급전 시스템 및 집전 시스템인 4-coil 급집전 시스템의 모드 전환시 변화하는 인덕턴스에 맞춰 고정된 주파수로 공진 하도록하는 커패시터 뱅크와 스위치 구조를 제공하는 효과가 있다.According to the present invention, a capacitor bank and a switch for resonating at a fixed frequency in accordance with inductance varying in mode switching of a 4-coil class current collecting system, which is a power feeding system and a current collecting system, Structure.

도 1은 4-coil 급전 모듈.
도 2는 4-coil 급전 모듈의 모드.
도 3은 4-coil 급전 모듈의 Filter 및 Impedance matching network를 포함한 공진 커패시터 모듈 구조.
도 4는 4-coil 급전의 모드에 따른 스위치의 동작 여부를 포함한 등가회로.
도 5는 각 모드별 스위치의 동작.Figure 1 is a 4-coil feed module.
Figure 2 shows the mode of a 4-coil feed module.
3 is a resonant capacitor module structure including a filter and impedance matching network of a 4-coil feed module.
Fig. 4 is an equivalent circuit including the operation of the switch according to the mode of the 4-coil power supply.
5 shows the operation of each mode-specific switch.

이하 첨부된 도면을 참조로 본 발명의 바람직한 실시예를 상세히 설명하기로 한다. 이에 앞서, 본 명세서 및 청구범위에 사용된 용어나 단어는 통상적이거나 사전적인 의미로 한정해서 해석되어서는 아니되며, 발명자는 그 자신의 발명을 가장 최선의 방법으로 설명하기 위해 용어의 개념을 적절하게 정의할 수 있다는 원칙에 입각하여 본 발명의 기술적 사상에 부합하는 의미와 개념으로 해석되어야만 한다. 따라서, 본 명세서에 기재된 실시예와 도면에 도시된 구성은 본 발명의 가장 바람직한 일 실시예에 불과할 뿐이고 본 발명의 기술적 사상을 모두 대변하는 것은 아니므로, 본 출원시점에 있어서 이들을 대체할 수 있는 다양한 균등물과 변형예들이 있을 수 있음을 이해하여야 한다.Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings. Prior to this, terms and words used in the present specification and claims should not be construed as limited to ordinary or dictionary terms, and the inventor should appropriately interpret the concepts of the terms appropriately It should be interpreted in accordance with the meaning and concept consistent with the technical idea of the present invention based on the principle that it can be defined. Therefore, the embodiments described in this specification and the configurations shown in the drawings are merely the most preferred embodiments of the present invention and do not represent all the technical ideas of the present invention. Therefore, It is to be understood that equivalents and modifications are possible.

도 1은 4-coil 급전 모듈이다.1 is a 4-coil feed module.

원형 집전을 장착한 차량이 진입시에는 1번부터 4번 코일에 동일한 전류 방향으로 전류를 인가하여 원형 급전과 유사한 듀얼타입 자계를 형성한다. DD 형상을 지니는 집전을 장착한 차량이 진입시에는 1번 3번 코일에 동일한 전류 방향을 지니는 전류를 인가하고 나머지 2번 코일과 4번 코일에 이와는 반대되는 전류 방향을 지니는 전류를 인가한다. 스위치등을 활용하여 전류 제어를 통해 기존 집전과의 호환성을 지니도록 한다. 이와 별도로 대각선으로 진입된 차량의 경우에는 1번 코일을 제외한 3개의 코일의 전류 방향을 1번 코일과 반대로 취하여 대각선으로 자속 형상을 구현하여 편차에 보다 강인하도록 한다.When a vehicle equipped with a circular current collector is energized, a current is applied to the first to fourth coils in the same current direction to form a dual type magnetic field similar to a circular power feeding. When the vehicle equipped with the DD-shaped current collector is energized, the current having the same current direction is applied to the coil # 1 and the current having the opposite direction is applied to the remaining coil # 2 and # 4 coil. Switches are used to make current control compatible with existing current collectors. In the case of a vehicle having a diagonal line separately, the current direction of the three coils except for the first coil is reversed from that of the first coil, so that the magnetic flux shape is implemented diagonally to make the variation stronger.

도 2는 4-coil 급전 모듈의 모드를 나타낸다.Figure 2 shows the mode of the 4-coil feed module.

4-coil을 구성하는 개별 코일을 결합하는 방법에 따라 자속의 형상을 제어 할 수 있으며 또한 전체 인덕턴스가 변화하게 된다.The shape of the magnetic flux can be controlled according to the method of combining the individual coils constituting the 4-coil, and the total inductance is also changed.

도 3은 4-coil 급전 모듈의 Filter 및 Impedance matching network를 포함한 공진 커패시터 모듈 구조이다.3 is a resonant capacitor module structure including a filter and an impedance matching network of a 4-coil power supply module.

커패시터 모듈은 인버터와 연결된다. 내부에 있는 스위치는 전기적으로 제어 될 수 있다.The capacitor module is connected to the inverter. The switch inside can be electrically controlled.

도 4는 4-coil 급전의 모드에 따른 스위치의 동작 여부를 포함한 등가회로이다.4 is an equivalent circuit including the operation of the switch according to the mode of the 4-coil power supply.

도 4의 A, B, C, D 커넥터는 도 3의 A, B, C, D 커넥터에 연결된다.The connectors A, B, C and D of FIG. 4 are connected to the connectors A, B, C and D of FIG.

도 5는 각 모드별 스위치의 동작을 나타낸다.5 shows the operation of each mode-specific switch.

도 5와 같이 스위치를 제어시 4-coil 급전 모듈의 올모드, 하프모드, 쿼터모드로 제어 할 수 있다. 위의 구조는 집전모듈에 적용시 같은 모드전환 효과를 가질 수 있다.As shown in FIG. 5, all-mode, half-mode, and quarter-mode control of the 4-coil power supply module can be performed when the switch is controlled. The above structure can have the same mode switching effect when applied to the current collecting module.

11: 코일 1
12: 코일 2
13: 코일 4
14: 코일 311: Coil 1
12: Coil 2
13: Coil 4
14: Coil 3

Claims (2)

4-coil 무선 전력 급집전 장치에서 모드 전환과 정합을 위한 커패시터 모듈 구조Capacitor module structure for mode switching and matching in 4-coil wireless power feeders 4-coil 무선전력 급집전 장치에서 모드 전환을 위한 스위치 연결 구조 및 이를 제어하는 방법Switch connection structure for mode switching in 4-coil wireless power feeder and method for controlling it
KR1020170154099A 2017-11-17 2017-11-17 Resonant capacitor connection method for 4-coil wireless power transfer apparatus KR20190056794A (en)

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Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR101436063B1 (en) 2012-10-18 2014-08-29 (주)기술과가치 Wiress Power Transmission Apparatus

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR101436063B1 (en) 2012-10-18 2014-08-29 (주)기술과가치 Wiress Power Transmission Apparatus

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