WO2008140333A2 - Véhicule électrique à multiples sources d'énergie - Google Patents

Véhicule électrique à multiples sources d'énergie Download PDF

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Publication number
WO2008140333A2
WO2008140333A2 PCT/NZ2008/000103 NZ2008000103W WO2008140333A2 WO 2008140333 A2 WO2008140333 A2 WO 2008140333A2 NZ 2008000103 W NZ2008000103 W NZ 2008000103W WO 2008140333 A2 WO2008140333 A2 WO 2008140333A2
Authority
WO
WIPO (PCT)
Prior art keywords
pad
battery
power transfer
inductive power
charging
Prior art date
Application number
PCT/NZ2008/000103
Other languages
English (en)
Other versions
WO2008140333A3 (fr
Inventor
John Talbot Boys
Grant Anthony Covic
Original Assignee
Auckland Uniservices Limited
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
Priority claimed from NZ555128A external-priority patent/NZ555128A/en
Priority to CA2687060A priority Critical patent/CA2687060C/fr
Priority to AU2008251143A priority patent/AU2008251143B2/en
Priority to KR1020157033692A priority patent/KR20150140398A/ko
Priority to KR1020217007446A priority patent/KR102472547B1/ko
Priority to CN201810244820.3A priority patent/CN108407644B/zh
Priority to KR1020137034223A priority patent/KR101881530B1/ko
Priority to JP2010507347A priority patent/JP2010530613A/ja
Priority to KR1020157007587A priority patent/KR20150040373A/ko
Priority to KR1020187036452A priority patent/KR102172339B1/ko
Application filed by Auckland Uniservices Limited filed Critical Auckland Uniservices Limited
Priority to KR1020207030606A priority patent/KR102230175B1/ko
Priority to CN200880023317XA priority patent/CN101689761B/zh
Priority to KR1020227039406A priority patent/KR102553884B1/ko
Priority to KR1020187020651A priority patent/KR102128564B1/ko
Priority to EP08766952.9A priority patent/EP2156532A4/fr
Priority to US12/451,436 priority patent/US8749334B2/en
Publication of WO2008140333A2 publication Critical patent/WO2008140333A2/fr
Publication of WO2008140333A3 publication Critical patent/WO2008140333A3/fr
Priority to US14/120,197 priority patent/US9767955B2/en
Priority to US15/371,788 priority patent/US10106046B2/en
Priority to US16/138,653 priority patent/US11325484B2/en
Priority to US17/685,757 priority patent/US20220266699A1/en

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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
    • 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
    • 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 ; Control systems therefor, i.e. systems controlling two or more prime movers, or controlling one of these prime movers and any of the transmission, drive or drive units Informative references: mechanical gearings with secondary electric drive F16H3/72; arrangements for handling mechanical energy structurally associated with the dynamo-electric machine H02K7/00; machines comprising structurally interrelated motor and generator parts H02K51/00; dynamo-electric machines not otherwise provided for in H02K see H02K99/00
    • 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 ; Control systems therefor, i.e. systems controlling two or more prime movers, or controlling one of these prime movers and any of the transmission, drive or drive units Informative references: mechanical gearings with secondary electric drive F16H3/72; arrangements for handling mechanical energy structurally associated with the dynamo-electric machine H02K7/00; machines comprising structurally interrelated motor and generator parts H02K51/00; dynamo-electric machines not otherwise provided for in H02K see H02K99/00 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 ; Control systems therefor, i.e. systems controlling two or more prime movers, or controlling one of these prime movers and any of the transmission, drive or drive units Informative references: mechanical gearings with secondary electric drive F16H3/72; arrangements for handling mechanical energy structurally associated with the dynamo-electric machine H02K7/00; machines comprising structurally interrelated motor and generator parts H02K51/00; dynamo-electric machines not otherwise provided for in H02K see H02K99/00 the prime-movers consisting of electric motors and internal combustion engines, e.g. HEVs characterised by apparatus, components or means specially adapted for HEVs
    • B60K6/26—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 ; Control systems therefor, i.e. systems controlling two or more prime movers, or controlling one of these prime movers and any of the transmission, drive or drive units Informative references: mechanical gearings with secondary electric drive F16H3/72; arrangements for handling mechanical energy structurally associated with the dynamo-electric machine H02K7/00; machines comprising structurally interrelated motor and generator parts H02K51/00; dynamo-electric machines not otherwise provided for in H02K see H02K99/00 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 motors or the generators
    • 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 ; Control systems therefor, i.e. systems controlling two or more prime movers, or controlling one of these prime movers and any of the transmission, drive or drive units Informative references: mechanical gearings with secondary electric drive F16H3/72; arrangements for handling mechanical energy structurally associated with the dynamo-electric machine H02K7/00; machines comprising structurally interrelated motor and generator parts H02K51/00; dynamo-electric machines not otherwise provided for in H02K see H02K99/00
    • 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 ; Control systems therefor, i.e. systems controlling two or more prime movers, or controlling one of these prime movers and any of the transmission, drive or drive units Informative references: mechanical gearings with secondary electric drive F16H3/72; arrangements for handling mechanical energy structurally associated with the dynamo-electric machine H02K7/00; machines comprising structurally interrelated motor and generator parts H02K51/00; dynamo-electric machines not otherwise provided for in H02K see H02K99/00 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 ; Control systems therefor, i.e. systems controlling two or more prime movers, or controlling one of these prime movers and any of the transmission, drive or drive units Informative references: mechanical gearings with secondary electric drive F16H3/72; arrangements for handling mechanical energy structurally associated with the dynamo-electric machine H02K7/00; machines comprising structurally interrelated motor and generator parts H02K51/00; dynamo-electric machines not otherwise provided for in H02K see H02K99/00 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 ; Control systems therefor, i.e. systems controlling two or more prime movers, or controlling one of these prime movers and any of the transmission, drive or drive units Informative references: mechanical gearings with secondary electric drive F16H3/72; arrangements for handling mechanical energy structurally associated with the dynamo-electric machine H02K7/00; machines comprising structurally interrelated motor and generator parts H02K51/00; dynamo-electric machines not otherwise provided for in H02K see H02K99/00 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
    • 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
    • B60L53/11—DC charging controlled by the charging station, e.g. mode 4
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60W—CONJOINT CONTROL OF VEHICLE SUB-UNITS OF DIFFERENT TYPE OR DIFFERENT FUNCTION; CONTROL SYSTEMS SPECIALLY ADAPTED FOR HYBRID VEHICLES; ROAD VEHICLE DRIVE CONTROL SYSTEMS FOR PURPOSES NOT RELATED TO THE CONTROL OF A PARTICULAR SUB-UNIT
    • B60W10/00—Conjoint control of vehicle sub-units of different type or different function
    • B60W10/24—Conjoint control of vehicle sub-units of different type or different function including control of energy storage means
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60W—CONJOINT CONTROL OF VEHICLE SUB-UNITS OF DIFFERENT TYPE OR DIFFERENT FUNCTION; CONTROL SYSTEMS SPECIALLY ADAPTED FOR HYBRID VEHICLES; ROAD VEHICLE DRIVE CONTROL SYSTEMS FOR PURPOSES NOT RELATED TO THE CONTROL OF A PARTICULAR SUB-UNIT
    • B60W10/00—Conjoint control of vehicle sub-units of different type or different function
    • B60W10/24—Conjoint control of vehicle sub-units of different type or different function including control of energy storage means
    • B60W10/26—Conjoint control of vehicle sub-units of different type or different function including control of energy storage means for electrical energy, e.g. batteries or capacitors
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60W—CONJOINT CONTROL OF VEHICLE SUB-UNITS OF DIFFERENT TYPE OR DIFFERENT FUNCTION; CONTROL SYSTEMS SPECIALLY ADAPTED FOR HYBRID VEHICLES; ROAD VEHICLE DRIVE CONTROL SYSTEMS FOR PURPOSES NOT RELATED TO THE CONTROL OF A PARTICULAR SUB-UNIT
    • B60W20/00—Control systems specially adapted for hybrid vehicles
    • B60W20/10—Controlling the power contribution of each of the prime movers to meet required power demand
    • 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
    • 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
    • H02J50/70—Circuit arrangements or systems for wireless supply or distribution of electric power involving the reduction of electric, magnetic or electromagnetic leakage fields
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60W—CONJOINT CONTROL OF VEHICLE SUB-UNITS OF DIFFERENT TYPE OR DIFFERENT FUNCTION; CONTROL SYSTEMS SPECIALLY ADAPTED FOR HYBRID VEHICLES; ROAD VEHICLE DRIVE CONTROL SYSTEMS FOR PURPOSES NOT RELATED TO THE CONTROL OF A PARTICULAR SUB-UNIT
    • B60W20/00—Control systems specially adapted for hybrid vehicles
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60W—CONJOINT CONTROL OF VEHICLE SUB-UNITS OF DIFFERENT TYPE OR DIFFERENT FUNCTION; CONTROL SYSTEMS SPECIALLY ADAPTED FOR HYBRID VEHICLES; ROAD VEHICLE DRIVE CONTROL SYSTEMS FOR PURPOSES NOT RELATED TO THE CONTROL OF A PARTICULAR SUB-UNIT
    • B60W2710/00—Output or target parameters relating to a particular sub-units
    • B60W2710/24—Energy storage means
    • 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
    • H02J50/005—Mechanical details of housing or structure aiming to accommodate the power transfer means, e.g. mechanical integration of coils, antennas or transducers into emitting or receiving devices
    • 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
    • Y02T10/62—Hybrid 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
    • 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 present invention relates to an Inductive Power Transfer (IPT) pad, a system, method and means for charging a battery of an electric vehicle using multiple power sources and an electric vehicle powered by said battery. More particularly, the invention relates to charging the battery for an electric vehicle selectively using a high power source for charging at a high rate or a lower power source for charging at a lower rate.
  • IPT Inductive Power Transfer
  • hybrid vehicles may be a good solution as they can travel great distances on fossil fuels and refuel at conventional petrol stations.
  • IPT Inductive Power Transfer
  • New Zealand Patent Application No. 545664 entitled “Single Phase Power Supply for Inductively Coupled Power Transfer Systems” and is incorporated herein by reference.
  • This charger provides many advantages in that it will operate from a standard single phase supply typically available in the home, has an excellent power factor and very low harmonics. As a result of this, it would be possible to operate with several thousand of these connected to a utility network without the quality of supply being degraded.
  • the use of IPT obviates the need for a user to manually connect a cable to the battery.
  • IPT Inductive Power Transfer
  • An alternative object of the invention is to provide a system for charging an electric vehicle.
  • An alternative object of the invention is to provide a method of charging an electric vehicle. Alternatively, it is an object of the invention to at least provide a useful choice.
  • an inductive power transfer (IPT) pad comprising a coil having at least one turn of a conductor; one or more ferromagnetic slabs; and a shield member arranged around both said coil and said ferromagnetic slabs for channelling electromagnetic flux when in use.
  • IPT inductive power transfer
  • the conductor is litz wire.
  • the coil comprises a plurality of turns of wire.
  • the ferromagnetic slabs are monolithic slabs.
  • the ferromagnetic slabs are ferrite slabs.
  • each ferromagnetic slab is arranged in substantially the same plane.
  • each ferromagnetic slab is arranged such that its length extends radially from a common point but spaced apart therefrom.
  • each ferromagnetic slab is spaced apart from adjacent slabs by substantially the same angle.
  • the IPT pad comprises eight ferromagnetic slabs each spaced apart from adjacent slabs by approximately 45°. Other configurations may be selected depending on system requirements.
  • the IPT pad comprises a plurality of ferromagnetic slabs whereby a subset of the ferromagnetic slabs extend radially from a common point but are spaced apart therefrom, a further subset of the ferromagnetic slabs extend radially from a different common point but are spaced apart therefrom, and a still further subset of the ferromagnetic slabs are aligned perpendicularly to the direction of an imaginary straight line connecting the said common points, whereby the still further subset of ferromagnetic slabs are positioned equidistantly from the imaginary line but spaced equally along its length and equally on each side of the imaginary line.
  • the coil is arranged in. a plane substantially parallel to that of the ferromagnetic slabs.
  • the coil is positioned to wind around the common point such that it passes each slab at approximately the centre of the length of each slab.
  • the IPT pad comprises a substantially rigid backplate.
  • the backplate is substantially planar
  • the plane of the backplate is substantially parallel to the planes of the ferromagnetic slabs and the coil, with the plane of the slabs located between the planes of the backplate and the coil.
  • each ferromagnetic slab is spaced apart from the backplate by a thermally conductive and mechanically insulating material so as to allow the transfer of heat there between and protect the slab from mechanical shock.
  • each slab may be spaced apart from the backplate using foam or rubber pads. The material making up the slabs is brittle and such steps serve to prevent cracking in the slabs caused by rapid temperature changes and also due to mechanical stresses exerted on the IPT pad.
  • the backplane is formed from a . material which substantially inhibits the passage of magnetic flux therethrough.
  • this material is aluminium.
  • the shield member is formed from a strip of material with the ends thereof joined to form a ring.
  • the shield member is formed from aluminium.
  • the shield member is coupled to the backplane.
  • the IPT pad comprises a member having spaces formed therein for holding the ferromagnetic slabs in position and having a channel for accommodating the coil.
  • the member is formed from a material which does not significantly affect magnetic flux.
  • foam or rubber is used.
  • the member is formed by a moulding process.
  • the IPT pad comprises a cover plate formed from a material that is substantially transparent to magnetic flux.
  • this material is a non-toxic plastic.
  • the cover plate and the backplate provide front and rear walls of a housing for the IPT pad, with side walls provided by the shield member, the shield member preferably being configured to extend from the backplate to the cover plate.
  • the IPT pad according to the first aspect provides for improved performance in use by channelling the flow of flux from the charging pad. More particularly, the backplate and the shield member serve to direct flux upwards from the plane of the backplate with less splay of flux in and parallel to the plane of the backplate. This not only improves the inductive coupling but also reduces the chance that any undesired objects will be subjected to the induced fields during use. It is important to note that if this leakage is not controlled, it can lead to damage of such objects. For example, in the case of an electric vehicle, such leakage may result in the wheel bearings eroding.
  • the IPT pad of the present invention is also beneficial in that it is relatively slimline compared to more conventional IPT pickups. This is particularly important where pickup pads are coupled to the underside of an electric vehicle since it is important that ground clearance is maintained.
  • an inductive power transfer system comprising two inductive power transfer pads, wherein the two inductive power transfer pads are used in combination, one of the pads being used as a pickup pad and the other pad as a ' charging pad.
  • the charging pad is coupleable to a power supply and inductively transfers power to the pickup pad, which is coupleable to a load, such as a battery.
  • an apparatus for charging a battery of an electric or a hybrid electric vehicle comprising first means for selectively coupling the battery to a high power electrical supply; and second means for selectively coupling the battery to a lower power electrical supply wherein the second means for coupling comprises a pickup pad electrically coupled to the battery, wherein power is transferred to the pickup pad from a charging pad by inductive power transfer.
  • the first means for coupling comprises a socket electrically coupled to. the battery, wherein power is transferred by plugging a cable connected to the high power electrical supply into the socket.
  • electrical energy may be rapidly transferred to the battery using the first means for coupling, resulting in rapid charging.
  • the first means for coupling comprises a plug electrically coupled to the battery, wherein power is transferred by plugging the plug into a socket connected to the cable connected to the high power electrical supply.
  • the second means for coupling comprises a pickup pad according to the first aspect of the invention.
  • IPT avoids the need for a user to plug in a cable for opportunity charging, including when a vehicle is parked overnight.
  • a second socket may be provided or the first socket adapted, if required, so that the battery may be connected to a lower power supply using a cable.
  • the second socket may be substituted by a plug configured to mate with a socket connected to the lower power supply.
  • Such embodiments provide for improved flexibility in that, where provided and where time permits, the battery may be charged using IPT. If rapid charging is required and a high power supply is available, the battery may be connected thereto. However, there remains the possibility that a battery will require charging where neither an IPT charging pad or a high power supply is available.
  • the second socket may be provided, preferably on an outer surface of the vehicle, to enable the battery to be connected, via a cable, to a lower power supply, such as via a conventional household socket.
  • the socket used for coupling to the high power supply may also be used to couple to a lower power supply. It is therefore possible to charge a battery via most household circuits, with only a cable needing to be carried in the vehicle.
  • a user may selectively couple the battery to a high power supply or a lower power electrical supply, preferably using IPT for transferring power from the lower power supply.
  • the high power supply has a transfer rating between 10 kW and 500 kW.
  • the lower power supply has a transfer rating between 0.5 kW and 2.5 kW so that it may be provided by conventional household wiring. More preferably, the lower power supply is between 1.0 kW and 2.2 kW.
  • battery throughout the specification is not used in a limiting way and may include one or any number of cells or batteries, or super capacitors.
  • the apparatus comprises an indication means for indicating alignment between the charging pad and the pickup pad.
  • the apparatus comprises an indication means for indicating when the battery is being charged.
  • an electric vehicle comprising a rechargeable battery and the apparatus of the third aspect for charging said battery.
  • the electric vehicle may be a "pure electric vehicle” in that it may be powered only by electrical energy.
  • the invention is not limited thereto and may be applied to hybrid vehicles which may be powered by electrical energy and at least one other energy source, such as a combustible fuel.
  • references to "electric vehicles” herein include both pure electric vehicles and hybrid vehicles having electrical energy as one source of power.
  • a method of ..charging a battery of an electric or a hybrid electric vehicle comprising selectively coupling the battery to a high power supply or a lower power supply, wherein said coupling the battery to a lower power supply comprises positioning an inductive power transfer pickup pad electrically coupled to the battery in close proximity to an inductive power transfer charging pad.
  • the step of connecting the battery to the high power supply comprises mating a plug with a socket, wherein the plug is associated with one of the battery and the high power supply, and the socket is associated with the other one of the battery and the high power supply.
  • the pickup pad is coupled to the underside of the vehicle and the charging pad is provided on the ground, wherein said selectively coupling the battery to the lower power supply comprises driving the vehicle into a position such that the pickup pad is positioned above, or operably adjacent to, the charging pad.
  • the charging and pickup pads can be variably distanced from each other.
  • the charging pad may be raised and lowered from the ground by a raising and lowering means.
  • the pickup pad may be raised and lowered from the underside of the vehicle by a raising and lowering means.
  • the method comprises indicating alignment between the charging pad and the pickup pad. . .. . .
  • the method comprises indicating when the battery is being charged.
  • a pickup pad may be located essentially anywhere on the vehicle with the charging pad being mounted so that IPT transfer is enabled when the vehicle is parked in position.
  • a pickup pad may be provided on the front or rear surface of the vehicle with the charging pad being mounted on a wall in a garage so that they inductively couple when the vehicle is parked.
  • the invention does not preclude the mounting of the pickup pad and/or the charging pad on a moveable mounting or armature, whereby, following parking of a vehicle, a user may move one or both of the pads so that IPT transfer is enabled. While having the drawback of requiring greater user intervention, such embodiments do allow for greater tolerances in the parking position of the vehicle.
  • a system for charging a battery of an electric or a hybrid electric vehicle comprising an electricity network or subnetwork having at least one generator; cabling for transferring energy generated by the at least one generator around the network; IPT coupling means for coupling the network to the battery; and control means for controlling the power transfer from the at least one generator to the battery.
  • the network is coupled to a plurality of batteries of a corresponding plurality of electric or hybrid electric vehicles.
  • Any energy source may be used by the generator(s) to generate electrical energy.
  • a renewable energy source is used.
  • the control means it is possible to overcome problems associated with the fluctuable nature of power generated from renewable sources and enhance the stability of the network by varying the power supplied to the battery so that the power demand on the network better matches the available power.
  • control means is configured to vary the power transfer so as to optimise the load factor.
  • a network controller e.g. a utility company
  • the batteries in the vehicles are owned by a network controller which operates the network and are leased to the owners of the vehicles.
  • the system of the sixth aspect preferably comprises at least one IPT pad according to the first aspect and/or at least one apparatus for charging according to the third aspect and/or at least one electric vehicle according to the fourth aspect.
  • control means is controlled by way of a communications channel.
  • a method of charging a battery of an electric or a hybrid electric vehicle comprising the steps of coupling the battery to an electricity network or subnetwork using inductive power transfer; transferring electrical energy to the battery via the network; and varying the power transfer according to at least one predetermined criteria.
  • the at least one predetermined criteria may comprise one or more of: a time of day; the level of demand on the network; the level of available supply in the network, which is particularly relevant where the energy source for the network is fluctuable.
  • the method further comprises the steps of coupling batteries of a plurality of electric vehicles to the network and selectively transferring power to all or a subset thereof.
  • the method further comprises the steps of: coupling batteries of a plurality of electric vehicles to the network; and selectively transferring power to all batteries or a subset thereof.
  • the method comprises the step of varying the electricity mains frequency to determine the battery load on the network.
  • a system for supplying power to an electricity network comprising: an electricity network or subnetwork having at least one generator; a plurality of batteries of a plurality of electric or electric hybrid vehicles; cabling for transferring energy stored in the plurality of batteries; IPT coupling means for coupling the batteries to the network; and control means for controlling the power transfer from the plurality of batteries to the network.
  • a ninth aspect of the invention there is provided a method of supplying power to an electricity network, the method comprising the steps of: coupling a plurality of batteries of a plurality of electric or hybrid electric vehicles to the network using inductive power transfer; transferring electrical energy to the network from the battery; and varying the power transfer according to at least one predetermined criteria.
  • a system for controlling load demand in an electricity network comprising: an electricity network having at least one generator, the frequency of power supplied by the network being allowed to vary; at least one load connected to the network; and control means to monitor the frequency of power supplied by the network, the control means increasing or reducing power consumed by the load dependent on the frequency.
  • a method of controlling load demand on an electricity network comprising: allowing the frequency of power supplied by the network to vary; monitoring the frequency of power supplied by the network; and increasing or reducing the power consumed by the load dependent on the frequency.
  • Figure 1 is a perspective view showing a preferred relative positioning of an IPT charging pad and an electric vehicle during charging
  • Figure 2 is a perspective view of a preferred embodiment of an IPT pad
  • FIGS 3 to 5 are alternative perspective views of the embodiment of the IPT pad of
  • Figure 5A is a view of an alternative embodiment of an IPT pad configuration
  • Figure 5B is a plan view of the alternative embodiment of the IPT pad of Figure
  • Figure 6 is a schematic representation of an electric vehicle being charged according to an embodiment of the invention.
  • Figure 7 is a schematic representation of an embodiment of a system according to the invention.
  • Embodiments of the invention provide for a multi-source electric vehicle that is able to operate in most situations that may occur in terms of types, length and frequency of trips.
  • References to "multi-source electric vehicles” are used to refer to electric vehicles embodying or capable of operating with embodiments of the present invention where the batteries and/or cells used to power the vehicle may be charged using various electrical power sources.
  • Embodiments of the invention provide all of the advantages of a plug-in electric vehicle in that it can be recharged 'at home' overnight but, according to preferred embodiments, it does so without the disadvantage of requiring a cable to be plugged in. More particularly, according to preferred embodiments, a charging pad is preferably provided on the floor where the vehicle is usually parked, such as in the floor of a user's garage.
  • the charging pad transfers energy to the vehicle's battery by Inductive Power Transfer (IPT) via a pickup provided on the underside of the vehicle.
  • IPT Inductive Power Transfer
  • the charging pad provided on the floor is energised by a power supply and the magnetic field produced thereby couples power into the pickup attached to the vehicle and charges the on-board battery.
  • Power transfer rates of up to around 2.2 kW are compatible with household outputs on most utility networks.
  • the control of this power flow may be achieved using the technique described in US Patent No. 5,293,308, which is incorporated herein by reference. Other methods are also within the scope of the invention.
  • Figure 1 shows a preferred relative positioning of charging pad 20 and vehicle 10 during charging.
  • the pickup pad (not shown) is preferably of the same shape and configuration of charging pad 20 and is positioned on the underside of vehicle 10 so that it is substantially directly above charging pad 20 when vehicle 10 is parked.
  • the magnetic flux produced by charging pad 20 links the two pads. There is no functional requirement for the pickup pad to be positioned underneath the vehicle but this is preferred for aesthetic reasons and relative ease of installation for retrofitted vehicles.
  • Figures 2 to 5 show alternative perspective views of charging pad 20 according to preferred embodiments of the invention. More particularly, Figure 2 shows the outer housing of the pad, Figure 3 shows the pad with a portion of the outer housing cut away to show interior detail, Figure 4 corresponds to the view of Figure 3 with exterior features shown as see- through to provide additional detail of the internal arrangement of the components, and Figure 5 shows the pad with the top cover removed.
  • the pickup pad is of the same configuration as charging pad 20 and description of charging pad 20 also applies to the pickup pad, except that charging pad 20 is coupled to an electrical supply (e.g. the mains electricity supply) and the pickup pad is attached to a load (i.e., the vehicle battery to be • charged).
  • an electrical supply e.g. the mains electricity supply
  • a load i.e., the vehicle battery to be • charged
  • Pads 20 are preferably placed an object formed from a material which substantially limits the passage of magnetic flux, such as a metallic backplate 21 (which is formed from aluminium in a preferred embodiment) with 8 ferrite bars 22 displaced at 45 degrees with respect to each other. Bars 22 are held in position by rubbery moulding 23.
  • a coil of litz wire 27 (see Figure 5) is linked by the magnetic flux passing through ferrite bars 22.
  • the coil of litz wire 27 is located on ferrite bars 22 in region 24 of pad 20 so that the coils wind round the generally circular body of the pad approximately half way along the lengths of bars 22.
  • Aluminium strip 25 is coupled or formed integral to backplate 21 to assist in controlling the pattern of the flux generated.
  • Cover 28 is coupled to the top of the main circular body of the pad.
  • Cover 28 is formed from a material, such as PVC, or preferably a non-toxic plastic, which does not obstruct the passage of flux therethrough.
  • a material such as PVC, or preferably a non-toxic plastic, which does not obstruct the passage of flux therethrough.
  • the particular configuration shown enables the pads to be relatively slim-line which is particularly important for the pickup pad when retrofitted to existing vehicles so as to maintain ground clearance.
  • backplate 21 and strip 25 are appropriately coupled to work together to direct flux generated by the charging pad through cover 28 in a generally perpendicular direction to backplate 21 , thereby providing for improved coupling between a charging pad and a pickup pad since there is less leakage caused by the splay of flux in directions generally parallel to backplate 21.
  • Backplate 21 and strip 25 are electrically connected in one embodiment of the invention.
  • a charging pad is provided on a floor to couple with a pickup pad on the underside of a vehicle, these tolerances translate into tolerances for the parking position of the vehicle.
  • Relatively simple methods may be used to assist a driver in parking in the correct position. For example, a ball on a string may be suspended from the ceiling and aligned with a spot on the windscreen when the vehicle is in the correct position.
  • a charging indicator may be provided in the vehicle that lights up when the battery is charging and hence the vehicle is in the correct position.
  • Other alternatives will be readily apparent to one of skill in the art and all such alternatives are within the scope of the present invention.
  • bars 22 preferably have a height of 10 rrim, width of 30 mm and length of 120 mm, and coil 27 preferably comprises Iitz wire having 0.2 mm diameter individually insulated wires with 120 strands at 3.77 mm 2 or more.
  • Strip 25 preferably has a thickness of around 4 mm and cover 28 preferably has a thickness of approximately 5 mm. It should be noted that the invention is not limited to these particular values and the skilled person will be aware that other values may be selected depending on the desired operational characteristics.
  • the power pad on the floor under the vehicle takes the place of a 'track' in a more conventional IPT system and the power pad attached to and under the vehicle is the pickup coil.
  • this arrangement of coils allows power to be passed from the floor power pad to the vehicle power pad at high efficiency such that the battery on the vehicle may be charged overnight.
  • Embodiments of the IPT system make opportunity charging of an electric vehicle possible, not only for a single vehicle in the home, but also, for example, for a fleet of delivery vehicles and the like to allow continuous operation on a 24 x 7 basis given that the work schedule includes relatively long times where the vehicle can be parked over the floor mounted power pad.
  • the typical charging rate of 2kW does not overcome the limited range problem of electric vehicles, where the total energy demand exceeds the available stored energy.
  • a high power, plug-in charger may be connected to the vehicle using a separate high power plug to provide rapid charging of the battery. Not all battery types are capable of accepting powers of the magnitude envisaged but lithium batteries are increasingly capable of doing this.
  • the power pad intervention-free charger is a home-based IPT charging system providing a charging power of about 2 kW to stay within the ratings of conventional household wiring.
  • a typical battery in an electric vehicle may store 50 kWH of energy or 170 AH (Ampere-Hours) at 300V so that the nominal charging rate is 0.04C (where C stands for the capacity of the battery in AH). This is a conservative and safe estimate. With a single 12 hour charge, 24 kWH of energy, may be transferred and if the vehicle operates with an average power demand of 10 kW, it will have a range of about 2 hours of driving or approximately 160 km per day. With a longer charging time this range can be doubled by having the vehicle fully charged.
  • embodiments of the high power battery charger may provide power at a rate of 10kW - 500 kW for 6 minutes corresponding to a charging rate of 10C.
  • a rate of 10kW - 500 kW for 6 minutes corresponding to a charging rate of 10C.
  • an electric power flow of 500 kW is high but is still low compared with the energy flow rate when pumping petrol or diesel fuel into a tank.
  • the IPT system is safe and easy to use, making it suitable for installation in the home or other places a car may be parked, such as in public car parks.
  • FIGS 5A and 5B show an alternative embodiment of the charging pad configuration 20 according to the present invention.
  • the pad 20 is an oval shape in plan.
  • Oval power pads can be constructed by extending the circular power " pads and adding identical rectangular sections in the middle. The construction of both power pads is again preferably identical.
  • the coil 27 is lengthened and a subset of additional ferrite or ferromagnetic bars 22A are added with similar spacing to that of the subset of bars equivalent to those of the circular power pad described above.
  • the advantage of this oval-shaped arrangement is that the tolerance of the pad to lateral movement (in the x direction shown in Figure 5A) is improved over the circular pad.
  • the ability to control the spacing between the charging pad and the pickup pad attached to the vehicle is also advantageous. This can be achieved using a variety of methods.
  • the charging pad on the floor may include means for raising and lowering it from the floor such as a jack.
  • the jack may be hand or electrically powered.
  • the pickup pad on the underside of the vehicle may include means for increasing or decreasing its distance from the underside of the vehicle. Again, this may be a jack or other known mechanisms.
  • An inductive charger means there is no plug connection between the charger and the vehicle, unlike in alternative electric vehicle charging systems. If a user accidentally drives the vehicle away whilst still connected in a plugged system, the apparatus may be damaged and a hazardous situation may arise through broken current-carrying equipment. In contrast, using an IPT system with no requirement to first safely disengage any plugs, the vehicle would be able to drive safely away, without fear of damage to the equipment or risk of electricity hazard. Furthermore, in the event of flood, the IPT system can function very safely without the obvious dangers of alternative plugged systems.
  • FIG. 6 is a schematic drawing of. battery 51 of electric vehicle 10 being charged by high power electrical supply 52 via cable 53.
  • High power electrical supply 52 may comprise a high power generator or alternatively merely provides an interface or conduit between a high power electricity network and cable 53.
  • Cable 53 is provided with a plug (not shown) which mates with a socket (not shown) provided in vehicle 10. Wiring between the socket and battery 51 transfers electricity to battery 51.
  • the plug is provided with a safety housing to prevent access to the electrical contacts.
  • the socket may be provided at any point on vehicle 10 with wiring provided between the socket and battery 51. Thus, the invention is not limited to the position of the socket shown in Figure 6.
  • FIG 7 is a schematic representation of a system, generally marked 60, according to an embodiment of the invention.
  • Generator 61 provides high power electricity to facility 63 which includes high power electrical supplies 52 of Figure 6. Two high power electrical supplies 52 are shown. However, as would be apparent to one skilled in the art, the invention is not limited thereto and facility 63 may include one or any number of supplies 52, limited only by the available space and the capacity of generator 61.
  • High power cabling 62 acts as a conduit for the transfer of high power electricity to facility 63 and also to transformer 64 which reduces the supply to that of a lower power, such as that conventionally found in homes.
  • Lower power cabling 65 then transfers lower power electricity to charging pads 20, preferably provided in the floor of a user's garage. Whilst single generator 61 is shown, system 60 may include a plurality of generators and may include separate generators for the high power supply and the lower power supply.
  • the battery and the vehicle may be owned by different parties. More particularly, according to one embodiment of a system and method according to the invention, the battery may be owned by a utility company and leased to an owner of a vehicle. According to such embodiments, users of electric vehicles are clearly provided with the benefit of having a reduced capital outlay at the time of purchasing a vehicle.
  • benefits may also be realised by utility companies and not only through charges levied for supplying the electricity. In particular, through appropriate control of power supplied to the IPT charging pads, utility companies may level their electric load, particularly overnight when a large number of batteries for electric vehicles may be charging.
  • a communications channel may be provided between the controller of the network (typically, the utility company) and the vehicles under charge so as to enable monitoring of the charging of these vehicles.
  • a simple cell-phone channel may be used for this purpose.
  • the network controller may vary the battery charging demand to match it. This would allow the utility company to operate near their maximum power with safety as the electric vehicle load can be varied so quickly. This is similar to but more sophisticated than a ripple control system commonly used to control hot water heating. The essential differences are that partial loads are possible, and the loads can be varied more quickly and precisely.
  • the ability to manipulate the demand makes it more readily possible to integrate highly fluctuable 'renewable' sources of energy into power networks.
  • the manipulation may alternatively be made by allowing the frequency of the network or grid to vary in response to variations in the fluctuable source.
  • the power surge may be such that the mains frequency increases by a small fraction of 1 Hz.
  • These variations in frequency are measured by the power supply to the IPT charging pad and used to control the power pad or track current.
  • the power transferred is made proportional to the pad current so that by varying the pad current the charging load can be matched to the available power.
  • the variation can take place in as short a period as one cycle of the mains power.
  • the 49.5 Hz set-point can of course also be varied so that full power occurs at whatever frequency is required. For example, if the set point was 49 Hz then full power would be taken at 50Hz or higher. In this manner, high surges in power caused by strong gusts of wind over large wind farms can be compensated for.
  • the vehicles charge they will individually disengage themselves as soon as their batteries are fully charged so that the actual load is indeterminate and is not simply the total number of vehicles connected.
  • the load could be determined using a communication channel with each vehicle as discussed above but this would take time and a simpler option is available. If the set point was at 49.5 Hz then all of the connected vehicles that are still charging would be at 50% power if the frequency was 50 Hz. If the set point was then changed to 49.6 Hz then the charging vehicles would drop to 40% of their rated power and the change in power, over the whole country, would be 10% of the connected (total) power sink. In this particular example the actual power being taken could be increased by 6 times this change, or reduced by 4 times. In essence, the controllable battery charging load has been precisely determined.
  • Electricity generated from renewable sources other than wind power is also applicable to embodiments of the invention. All of these are not particularly stable and like wind may vary considerably over relatively short time scales. For example, measured rates of change for wind power in New Zealand have been as high as 200 MW in 5 minutes from a wind farm with a nominal rating of 200MW. Thus the integration of such highly fluctuable sources into an electricity network is a huge advantage. With the source-side control as outlined the charging load varies at a rate sufficient to match the fluctuable power on almost a cycle by cycle basis using small changes in the frequency of supply, allowing the use of energy that would otherwise simply be wasted. This energy would be generated at a considerably lower cost than electricity from more conventional sources.
  • wind power e.g. solar, tidal etc
  • the invention thus allows off-peak power to be used effectively and safely for electric vehicle charging. It also allows energy generated from renewable sources to be conveniently put to use to charge electric vehicles. Furthermore, the invention allows load demand to be controlled.

Abstract

L'invention concerne une plaque de transfert d'énergie par induction (IPT) et un système pour la charge de véhicules électriques et électriques hybrides. La batterie d'un tel véhicule peut être sélectivement couplée à une alimentation électrique de puissance élevée pour une charge rapide ou à une alimentation électrique de puissance inférieure pour une charge utilisant l'IPT. Les batteries des véhicules sont utilisées dans un système pour commander la demande de charge dans un réseau d'électricité par des variations de la fréquence d'alimentation.
PCT/NZ2008/000103 2007-05-10 2008-05-09 Véhicule électrique à multiples sources d'énergie WO2008140333A2 (fr)

Priority Applications (19)

Application Number Priority Date Filing Date Title
KR1020207030606A KR102230175B1 (ko) 2007-05-10 2008-05-09 멀티 전력을 공급받는 전기 자동차
CN200880023317XA CN101689761B (zh) 2007-05-10 2008-05-09 多电源电气车辆
AU2008251143A AU2008251143B2 (en) 2007-05-10 2008-05-09 Multi power sourced electric vehicle
KR1020217007446A KR102472547B1 (ko) 2007-05-10 2008-05-09 멀티 전력을 공급받는 전기 자동차
CN201810244820.3A CN108407644B (zh) 2007-05-10 2008-05-09 多电源电气车辆
KR1020137034223A KR101881530B1 (ko) 2007-05-10 2008-05-09 멀티 전력을 공급받는 전기 자동차
JP2010507347A JP2010530613A (ja) 2007-05-10 2008-05-09 複数の電源を利用する電動車両
KR1020157007587A KR20150040373A (ko) 2007-05-10 2008-05-09 멀티 전력을 공급받는 전기 자동차
KR1020227039406A KR102553884B1 (ko) 2007-05-10 2008-05-09 멀티 전력을 공급받는 전기 자동차
CA2687060A CA2687060C (fr) 2007-05-10 2008-05-09 Vehicule electrique a multiples sources d'energie
US12/451,436 US8749334B2 (en) 2007-05-10 2008-05-09 Multi power sourced electric vehicle
KR1020157033692A KR20150140398A (ko) 2007-05-10 2008-05-09 멀티 전력을 공급받는 전기 자동차
KR1020187036452A KR102172339B1 (ko) 2007-05-10 2008-05-09 멀티 전력을 공급받는 전기 자동차
KR1020187020651A KR102128564B1 (ko) 2007-05-10 2008-05-09 멀티 전력을 공급받는 전기 자동차
EP08766952.9A EP2156532A4 (fr) 2007-05-10 2008-05-09 Véhicule électrique à multiples sources d'énergie
US14/120,197 US9767955B2 (en) 2008-05-09 2014-05-05 Multi power sourced electric vehicle
US15/371,788 US10106046B2 (en) 2007-05-10 2016-12-07 Multi power source charging apparatus including inductive power transfer
US16/138,653 US11325484B2 (en) 2007-05-10 2018-09-21 Systems and methods for battery charging
US17/685,757 US20220266699A1 (en) 2007-05-10 2022-03-03 Systems and methods for battery charging

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
NZ555128 2007-05-10
NZ555128A NZ555128A (en) 2007-05-10 2007-05-10 Inductive power transfer pad and system
NZ556646 2007-07-20
NZ55664607 2007-07-20

Related Child Applications (2)

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US12/451,436 A-371-Of-International US8749334B2 (en) 2007-05-10 2008-05-09 Multi power sourced electric vehicle
US14/120,197 Division US9767955B2 (en) 2007-05-10 2014-05-05 Multi power sourced electric vehicle

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AU (1) AU2008251143B2 (fr)
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EP2156532A2 (fr) 2010-02-24
EP2156532A4 (fr) 2014-04-30
AU2008251143A1 (en) 2008-11-20
CA2687060A1 (fr) 2008-11-20
AU2008251143A2 (en) 2009-12-24
CA2687060C (fr) 2019-01-22
CA3002938A1 (fr) 2008-11-20
CA3002938C (fr) 2021-06-29
AU2008251143B2 (en) 2011-12-22
WO2008140333A3 (fr) 2009-01-08

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