WO2020190096A1 - Dispositif de réception pour recharge sans fil de moyens de déplacement, et moyens de déplacement comprenant celui-ci - Google Patents

Dispositif de réception pour recharge sans fil de moyens de déplacement, et moyens de déplacement comprenant celui-ci Download PDF

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Publication number
WO2020190096A1
WO2020190096A1 PCT/KR2020/003881 KR2020003881W WO2020190096A1 WO 2020190096 A1 WO2020190096 A1 WO 2020190096A1 KR 2020003881 W KR2020003881 W KR 2020003881W WO 2020190096 A1 WO2020190096 A1 WO 2020190096A1
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WO
WIPO (PCT)
Prior art keywords
wire
moving means
receiving
receiving coil
wireless power
Prior art date
Application number
PCT/KR2020/003881
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English (en)
Korean (ko)
Inventor
박종휘
김태경
김나영
최종학
이승환
Original Assignee
에스케이씨 주식회사
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.)
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Publication date
Application filed by 에스케이씨 주식회사 filed Critical 에스케이씨 주식회사
Priority claimed from KR1020200034360A external-priority patent/KR102306834B1/ko
Publication of WO2020190096A1 publication Critical patent/WO2020190096A1/fr

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Classifications

    • 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
    • B60L50/50—Electric propulsion with power supplied within the vehicle using propulsion power supplied by batteries or fuel cells
    • B60L50/60—Electric propulsion with power supplied within the vehicle using propulsion power supplied by batteries or fuel cells using power supplied by batteries
    • 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
    • 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
    • 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

Definitions

  • the embodiment relates to a receiving apparatus for wireless charging of a moving means and a moving means including the same.
  • wireless power charging is a method of charging a battery by flowing current through electromagnetic induction.
  • a magnetic field generated by the current flowing through the primary coil of the charger generates an induced current in the secondary coil of the battery, and the induced current recharges chemical energy into the battery.
  • This technology is convenient and there is little risk of a short circuit because the contact point is not exposed.
  • Korean Patent Application Publication No. 10-2012-0081051 Korean Patent Application Publication No. 10-2013-0004416, etc. are disclosed as wireless power charging technology.
  • An object of the embodiment is to provide a receiving device for wireless charging of a moving means having excellent charging efficiency and a moving means including the same.
  • the wireless power receiving device of the moving means includes a receiving pad and a receiving coil, the receiving coil is located on one surface of the receiving pad, and the receiving coil includes a wire, Both ends of the wire are connected to the battery, the receiving coil has a ring shape, and the wire includes a plurality of wires having a conductive portion wrapped with an insulating layer.
  • the wire ratio (Wr) is expressed by Equation 1 below, and the wire ratio of the wireless power receiver of the moving means is 0.03 to 0.40.
  • Sw is the output power (W) transmitted to the receiving device
  • Wn is the number of wires viewed from the cross-section of the receiving coil.
  • the diameter of the conductive part may be 0.05 to 0.15 mm.
  • the cross-sectional area ratio (Dr) is expressed by Equation 2 below.
  • Equation 2 Wd is the sum of the cross-sectional areas of the conductive parts, and Rd is the cross-sectional area of the receiving coil.
  • the ratio of the cross-sectional area of the wireless power receiving device of the moving means may be 0.2 to 0.8.
  • the wireless power receiving device of the moving means may receive output power of 3 to 30 kW.
  • the wireless power receiving device of the mobile means may receive power having a band of 10 to 100 kHz.
  • the receiving coil may include 100 to 10,000 wires positioned adjacent to each other.
  • the moving means includes the wireless power receiving device of the moving means described above in the power receiving device.
  • the means of transportation may be an electric vehicle or a drone.
  • the wireless charging receiving device and the moving means of the moving means of the embodiment provide a wireless charging receiving device of the moving means capable of securing excellent charging efficiency within a predetermined space and area, and a moving means including the same.
  • FIG. 1 is a block diagram showing a wireless power receiving apparatus for wireless charging of an electric vehicle as an example of a moving means according to an embodiment.
  • FIG. 2 is a perspective view showing a wireless power receiver for wireless charging of a moving means according to an embodiment.
  • FIG. 3 is a longitudinal sectional view showing a wireless power receiver for wireless charging of a mobile means according to an embodiment.
  • FIG. 4 is a conceptual diagram illustrating an electric wire applied to an embodiment in cross section.
  • the term "combination of these" included in the expression of the Makushi form means one or more mixtures or combinations selected from the group consisting of the constituent elements described in the expression of the Makushi form, and the constituent elements It means to include one or more selected from the group consisting of.
  • a means of movement is a concept in a broad sense that refers to all means of moving a location by applying electricity as power, and means of negotiated transportation (car, motorcycle, airplane, ship, etc.) for moving the driver and/or occupant.
  • transportation means herein such as trucks and forklifts, airplanes, ships, railways, etc.
  • the moving means includes moving means that are controlled remotely or with a program prepared in advance while the driver is not located within the moving means.
  • charging efficiency may vary depending on the characteristics of coils (receiving coils), wires (lead wires), and conductive parts (metal wires) applied to charging modules such as electric vehicles.
  • charging efficiency can be further improved by applying a specific wire ratio, etc., and is specifically presented in the present specification.
  • FIG. 1 is a block diagram showing a wireless power receiving apparatus 10 for wireless charging of a moving means 1 according to an embodiment
  • FIG. 2 is a diagram showing a wireless power receiving for wireless charging of a moving means 1 according to an embodiment
  • FIG. 3 is a longitudinal cross-sectional view showing a wireless power receiving device 10 for wireless charging of a moving means according to an embodiment of the present invention
  • 4 is a conceptual diagram illustrating an electric wire applied to an embodiment in cross section.
  • the wireless power receiving device 10 of the moving means is included in the moving means 1 including a battery that moves electricity by power, and a power supply unit located outside the moving means Generates an induced current by
  • the moving means 1 is typically an electric vehicle, a drone, etc., but is not limited thereto.
  • the wireless power receiving device 10 of the moving means includes a receiving pad 100; And, it includes; receiving coil (200).
  • the receiving pad 100 has one side and the other side.
  • the receiving coil 200 is located on at least one surface of the receiving pad, and acts as a power receiving coil during wireless charging of the moving means.
  • the receiving coil 200 includes a wire.
  • the wire is arranged in a ring shape with both ends connected to the battery.
  • the receiving coil 200 may include a wire wound around at least one surface of the receiving pad 100 in a shape of a plurality of rings.
  • the receiving coil 200 may include a plurality of wires 210 therein when viewed from a cross section of the receiving coil.
  • Each of the wires 210 may include one or more conductive portions 211b wrapped with an insulating layer 211a, and may include a plurality of conductive portions separated from each other by an insulating layer.
  • the power receiving device 10 for wireless charging of the moving means 1 is disposed in the moving means 1 applying electricity such as an electric vehicle or a drone as a power source, and a power supply unit disposed at an electric charging station, etc. It receives the induced current supplied from (2).
  • the power supply unit 2 is installed on a surface such as a charging station or a road, and generates an induced current in the power receiving device 10 through external power.
  • the power receiving device 10 is disposed on the moving means 1 and faces the power supply 2 at regular intervals. It is advantageous to improve charging efficiency by reducing the distance from the power supply unit by being disposed on the bottom or side of the moving means.
  • the electromagnetic induction phenomenon generated by the power supply unit 2 generates an induced current in the power receiving device 10 and charges the battery of the moving means 1, so that wireless charging of the moving means proceeds.
  • any configuration may be applied to the power supply unit 2 as long as it is a configuration capable of generating a change in a magnetic field by using current generated by external power.
  • the external power can be applied without limitation, including power from a commercial power source.
  • the wireless charging power receiving device 10 includes a receiving pad 100 and a receiving coil 200.
  • the receiving pad 100 faces the above-described power supply unit 2 and may be formed of a magnetic material so that mutual electromagnetic induction by the power supply unit 2 can occur.
  • the receiving coil 200 includes a wire 210.
  • the wire 210 may have a ring shape by being disposed in a plurality of layers and/or rows on the receiving pad 100 with both ends of the wire 210 connected to a battery (not shown).
  • the wires 210 may be connected to each other from one end to the other.
  • the wire 210 may have one end and the other end connected to the battery, respectively.
  • the receiving coil 200 may be arranged in a ring shape.
  • the wire 210 may be connected from one end to the other end and may be arranged in a ring shape wound in a plurality of rows.
  • the wire 210 may be connected from one end to the other end and wound in a plurality of rows and layers to be arranged in a ring shape.
  • the wire 210 may be a Litz wire.
  • the receiving coil 200 may include a Litz wire arranged in an annular shape.
  • One end and the other end of the Litz wire may be connected to the battery, respectively.
  • the annular shape may have a substantially constant thickness in cross section. However, a portion of an annular shape positioned close to one end or the other end may not have a uniform thickness of its cross section.
  • the receiving coil 200 may be fixed to the receiving pad 100 through adhesion.
  • the receiving coil 200 may be fixed to the receiving pad 100 through a separate binding member (not shown).
  • a plurality of electric wires 211 are disposed in the covering layer 212.
  • the electric wire 211 includes a conductive portion (eg, copper wire, 211b) and an insulating layer (eg, an enamel insulating layer, 211a), and the insulating layer surrounds the surface of the conductive portion.
  • a conductive portion eg, copper wire, 211b
  • an insulating layer eg, an enamel insulating layer, 211a
  • the receiving device 10 is characterized in that the wire ratio (Wr) represented by Equation 1 below is 0.03 to 0.40.
  • Sw is the output power (W) transmitted to the receiving device
  • Wn is the number of strands of the wire viewed from the cross-section of the receiving coil.
  • the receiving device 10 having a wire ratio in this range can minimize heat generation of a conductive part and provide a receiving device having excellent charging efficiency.
  • the receiving device 10 may have a wire ratio of 0.04 to 0.35, and may be 0.05 to 0.31. In the case of having such a wire ratio, the receiving device can receive power with excellent efficiency while having a smaller size.
  • the receiving device 10 may be configured to receive an output power of 3 to 30 kW. In this range of power, the power reception efficiency of the receiving device may be further improved.
  • the receiving coil may include a wire 211 of 200 to 2200 strands, and a wire 211 of 500 to 1500 strands It may include.
  • the receiving coil may include a wire 211 of 500 to 6500 strands, and a wire of 600 to 6200 strands ( 211) may be included.
  • the wire included in the receiving coil may have a diameter of 0.15 mm or less, and may be 0.05 to 0.15 mm.
  • the diameter of the wire is 0.15 mm or more, heating loss due to the skin effect may occur and the charging efficiency may decrease, and if it is less than 0.05 mm, difficulty in processing or disconnection of the electrically conductive layer (metal wire, etc.) is likely to occur, Rather, the manufacturing cost may increase.
  • the receiving device 10 is characterized in that the cross-sectional area ratio (Dr) according to Equation 2 below is 0.2 to 0.8.
  • Dr is the cross-sectional area ratio
  • Wd is the cross-sectional area of the wire
  • Rd is the cross-sectional area of the receiving coil
  • the cross-sectional area ratio may be 0.4 to 0.8, and may be 0.4 to 0.7.
  • the receiving device can receive power in a band of 10 to 100 kHz, and can receive power in a band of 20 to 90 kHz.
  • the receiving coil may include 100 to 10,000 wires positioned adjacent to each other.
  • the number of wires means the total number of wires included in one or two or more outer ears when the receiving coil is observed from a cross section.
  • the cross section of the receiving coil 200 is illustrated as a square (indicated by a dotted line) in FIG. 3, but is not limited thereto.
  • a wire Longit wire in which a plurality of wires are disposed is applied, but is not limited thereto.
  • the Litz wire is illustrated as a circular shape, but is not limited thereto, and has a substantially oval, square, trapezoidal, triangular shape, rather than a circular cross section, for the purpose of more efficient use of the space in which a specific receiving coil is located.
  • Litz wire can be applied.
  • a cross-sectional shape of the wire itself may be circular, or those having a shape such as substantially oval, square, trapezoid, and triangle may be applied.
  • the receiving coil 200 includes an electric wire 211 including a plurality of conductive portions 211b covered with an insulating layer 211a.
  • the receiving coil 200 may include a wire 210 in the form of a Litz wire in which a plurality of wires 211 form a bundle.
  • the receiving coil 200 may include a bundle of Litz wires.
  • Both ends of the wire 210 or Litz wire may be connected to a battery, not shown.
  • the wire 210 or Litz wire may be arranged in a plurality of layers and/or rows of annular shapes on the surface of the receiving pad 100 to be included in the receiving coil 200, and may constitute the receiving coil 200.
  • the receiving coil 200 may be fixed to the receiving pad 100 through adhesion.
  • the receiving coil 200 may be fixed to the receiving pad 100 through a separate binding member.
  • the ratio of the conductive parts of the Litz wire which is the sum of the cross-sectional area of the conductive part 211b to the cross-sectional area of the Litz wire based on the outer diameter Lh of the Ritz wire, may be 0.4 to 0.7.
  • the ratio of the conductive parts is less than 0.4, the conductive part is formed too thin to cause a break of the line, or the thickness of the insulating layer 211a and/or the covering layer 212 may be too thick, and if it exceeds 0.7, heat loss increases. Power transfer efficiency can be reduced.
  • the Litz wire may include a conductive portion 211b covered with 10 to 10,000 insulating layers 211a.
  • the Litz wire may include conductive portions 211b covered with 100 to 8,000 insulating layers 211a side by side.
  • the Litz wire may include conductive portions 211b covered with 500 to 7,000 insulating layers 211a in parallel.
  • the Litz wire may be processed by rolling or drawing a Litz wire having a circular cross section so that the height has a larger value than the width.
  • the receiving coil 200 may include a wire or Litz wire having an oval, rectangular, trapezoidal, or triangular cross section.
  • the oval, rectangular, trapezoidal, or triangular shape means that the wire has the shape as a whole, not the shape of the wire.
  • the number of turns of the receiving coil 200 may increase by 8% or more, and the number of turns may increase by 10% or more compared to a case in which a wire having the same circular cross section is applied.
  • the receiving coil 200 may increase the number of turns by 8 to 20%, and may increase by 10 to 20%, compared to a case in which a wire having the same circular cross section is applied.
  • the increase in the number of turns is evaluated based on a square receiving coil having a wire pad of 36 mm or less in width.
  • the receiving coil 200 may include 600 or more conductive parts 211b with a unit width of 5 mm, may include 850 to 1400 conductive parts 211b, and 900 to 1200 conductive parts 211b It may include.
  • the conductive portion is disposed in a state covered with the leading edge layer. In this case, the power receiving efficiency of the receiving pad 100 may be further improved.
  • the portion where the receiving coil is disposed on the receiving pad 100 is referred to as a wire pad 120.
  • the unit width refers to a part of the width of the wire pad 120.
  • the receiving coil 200 may include a wire having a plurality of rows and/or layers wound around the receiving pad 100 in a ring shape.
  • the plurality of rows means that the wires connected to each other are arranged side by side next to each other, and the plurality of layers means that the wires connected to each other are arranged side by side in at least two or more layers.
  • the plurality of layers may be disposed so as to be in contact with each other, or may be disposed with a certain distance between each layer as necessary.
  • the wires arranged in a plurality of rows or layers may be connected to each other.
  • the moving means 1 is applicable if it is a moving means and/or a transportation means driven using charged electric power, and includes an electric vehicle and a drone as an example.
  • the electric vehicle (EV) may be a wireless power transmission system using a magnetic induction method for an electric vehicle.
  • the electric vehicle includes an electric vehicle (EV) and an automobile defined in 49 CFR (code of federal regulations) 523.3.
  • the electric vehicle may have an automatic charging function.
  • Automatic charging may be defined as an operation of inductively charging a vehicle by placing a vehicle in an appropriate position with respect to a primary charger assembly capable of transmitting power. Automatic charging can be performed after obtaining the necessary authorizations and authorizations.
  • the receiving coil 200 may be included in a vehicle assembly.
  • the vehicle assembly may refer to an assembly disposed in a vehicle including a VA coil and other suitable components.
  • Other suitable components may include at least one component for controlling the impedance and resonant frequency, ferrites for strengthening the magnetic path, and electromagnetic shielding material.
  • the VA may include wiring between each unit, filtering circuits, housing, etc., as well as wiring of a rectifier/power converter and VA controller and vehicle battery required to function as a vehicle component of a wireless charging system. .
  • the receiving device 10 for wireless charging of the moving means is included in a moving means (1) including a battery that moves electricity by power, and is located outside the moving means and is located in a power supply unit (2) that supplies power.
  • the power supply unit, the receiving pad, etc. can be applied without limitation as long as they are normally applied, and the moving means (1) includes a negotiated moving means (car, etc.), a transportation means (truck, etc.), and a drone that is moved unattended. And the like.
  • a 36 mm wire pad was placed along the 4 sides with a space of about 10 mm inside the 4 sides of each 250 mm horizontal and vertical acrylic plate.
  • a Litz wire having a circular cross section with a diameter of 3.1 mm was sequentially rotated on the four sides with one corner (starting point) and placed in two layers without any gaps, and the Litz wire was allowed to exit to the starting point.
  • the thickness of the conductive part included in the Litz wire was 0.1 mm.
  • the receiving pad thus manufactured was used as the receiving pad of the embodiment.
  • the receiving pad was manufactured in the same manner as above, except that the Litz wire having a diameter of 6.3 mm was applied, and the receiving pad of the comparative example was manufactured in the same manner as above.
  • the charging efficiency measures the output power W (output voltage and output current) measured at output and the input power W (input voltage and input current) measured at the time of input with a Power Analyzer to measure the efficiency and convert the output W/input W to %. Calculated. Each result is shown in Table 1 below.
  • the charging efficiency of the Example was evaluated to be about 10% or more excellent compared to the charging efficiency of the Comparative Example.
  • the physical properties of the receiving pad were evaluated in the same way as in 2. above, but the output power was changed, charging efficiency, and wire ratio were evaluated and shown in Table 2 below.
  • conductive portion 211a insulating layer

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  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Transportation (AREA)
  • Mechanical Engineering (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Sustainable Development (AREA)
  • Sustainable Energy (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Charge And Discharge Circuits For Batteries Or The Like (AREA)

Abstract

Selon un mode de réalisation, cette invention concerne un dispositif de réception d'énergie sans fil pour des moyens de déplacement, comprenant : un tapis de réception ; et une bobine de réception, la bobine de réception étant située sur une surface du tapis de réception, la bobine de réception comprenant un fil, les deux extrémités du fil étant connectées à une batterie, la bobine de réception étant annulaire, le fil comprenant de multiples lignes électriques ayant chacune une couche d'isolation et une partie conductrice, un rapport de fil (Wr) étant exprimé par la formule 1 ci-dessous, et le rapport de fil (Wr) allant de 0,03 à 0,40. Dans la formule 1, Wr désigne un rapport de fil, Sw désigne la puissance de sortie (W) reçue par le dispositif de réception d'énergie sans fil pour des moyens de déplacement, et Wn désigne le nombre des lignes électriques observées dans une section transversale de la bobine de réception appliquée au dispositif de réception d'énergie sans fil pour des moyens de déplacement. Des moyens de déplacement selon un mode de réalisation de l'invention comprennent le dispositif de réception d'énergie sans fil pour des moyens de déplacement. En conséquence, une recharge plus efficace est possible.
PCT/KR2020/003881 2019-03-21 2020-03-20 Dispositif de réception pour recharge sans fil de moyens de déplacement, et moyens de déplacement comprenant celui-ci WO2020190096A1 (fr)

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Application Number Priority Date Filing Date Title
KR20190032621 2019-03-21
KR10-2019-0032621 2019-03-21
KR1020200034360A KR102306834B1 (ko) 2019-03-21 2020-03-20 이동수단의 무선충전용 수신장치 및 이를 포함하는 이동수단
KR10-2020-0034360 2020-03-20

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