WO2012042179A2 - Contactless charging of a motor vehicle battery - Google Patents

Contactless charging of a motor vehicle battery Download PDF

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Publication number
WO2012042179A2
WO2012042179A2 PCT/FR2011/052276 FR2011052276W WO2012042179A2 WO 2012042179 A2 WO2012042179 A2 WO 2012042179A2 FR 2011052276 W FR2011052276 W FR 2011052276W WO 2012042179 A2 WO2012042179 A2 WO 2012042179A2
Authority
WO
WIPO (PCT)
Prior art keywords
battery
charging
coil
motor vehicle
secondary coil
Prior art date
Application number
PCT/FR2011/052276
Other languages
French (fr)
Other versions
WO2012042179A3 (en
Inventor
Menouar Ameziani
Olivier Cayol
Original Assignee
Renault S.A.S.
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Renault S.A.S. filed Critical Renault S.A.S.
Publication of WO2012042179A2 publication Critical patent/WO2012042179A2/en
Publication of WO2012042179A3 publication Critical patent/WO2012042179A3/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
    • B60L53/126—Methods for pairing a vehicle and a charging station, e.g. establishing a one-to-one relation between a wireless power transmitter and a wireless power receiver
    • 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
    • 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
    • H02J50/40—Circuit arrangements or systems for wireless supply or distribution of electric power using two or more transmitting or receiving devices
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J2207/00—Indexing scheme relating to details of circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
    • H02J2207/40—Indexing scheme relating to details of circuit arrangements for charging or depolarising batteries or for supplying loads from batteries adapted for charging from various sources, e.g. AC, DC or multivoltage
    • 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
    • H02J2310/00—The network for supplying or distributing electric power characterised by its spatial reach or by the load
    • H02J2310/40—The network being an on-board power network, i.e. within a vehicle
    • H02J2310/48—The network being an on-board power network, i.e. within a vehicle for electric vehicles [EV] or hybrid vehicles [HEV]
    • 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
    • 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
    • H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
    • 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
    • H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
    • H02J7/007—Regulation of charging or discharging current or voltage
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
    • Y02T10/00—Road transport of goods or passengers
    • Y02T10/60—Other road transportation technologies with climate change mitigation effect
    • Y02T10/70—Energy storage systems for electromobility, e.g. batteries
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
    • Y02T10/00—Road transport of goods or passengers
    • Y02T10/60—Other road transportation technologies with climate change mitigation effect
    • Y02T10/7072—Electromobility specific charging systems or methods for batteries, ultracapacitors, supercapacitors or double-layer capacitors
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
    • Y02T90/00—Enabling technologies or technologies with a potential or indirect contribution to GHG emissions mitigation
    • Y02T90/10—Technologies relating to charging of electric vehicles
    • Y02T90/14—Plug-in electric vehicles

Definitions

  • the present invention relates to a charging system of a motor vehicle battery. It also relates to a part of this system intended for mounting within an automotive vehicle as well as a motor vehicle as such comprising this internal battery charging device.
  • Some motor vehicles have an electric powertrain, such as electric vehicles with only an electric powertrain or hybrid vehicles with both a thermal and electric drivetrain. These vehicles can be equipped with a battery that is recharged using a charger when it is discharged.
  • a first family of charging solutions of a motor vehicle battery called “with contact”, based on a direct and continuous electrical connection between the battery and the charger, the latter thus delivering an electric current to the battery through this connection that allows charging the battery.
  • a first approach is to use the power grid: this allows the battery to be charged from low power, of the order of 3 kW, which requires a long charging time of several hours.
  • a second approach powerful chargers are used, for example offering a power of up to 100 kW. All contact battery charging solutions have the following disadvantages:
  • Non-contact relies on remote charging via a charging system, also called “charger”, having a transmitting primary portion comprising in particular a primary coil, which we more simply call “transmitter”, which cooperates with a receiving secondary part comprising in particular a secondary coil, which we more simply call “receiver”, mounted on the motor vehicle and connected to the battery to be recharged.
  • the primary coil thus transmits a magnetic field sufficient to induce the charging current required for charging the battery at the secondary coil.
  • US5654621 discloses such a solution.
  • the object of the invention is to propose a charging solution for a motor vehicle battery which does not have all or some of the disadvantages of the state of the art.
  • the invention is based on a part of the charging device of a traction battery, said part being intended to be mounted within a motor vehicle and comprising a secondary coil suitable for connection with the battery of kind of being able to transmit him a current of charge, said secondary coil being adapted to receive a non-contact charging power transmitted by a primary coil outside said vehicle, characterized in that it further comprises a spare coil connected to a connector for receiving a current of charging the outside of the vehicle, the backup coil being able to transfer a charging power without contact to the secondary coil to generate a charging current in the secondary coil.
  • the spare coil and the secondary coil can be stacked.
  • the spare coil and the secondary coil can be nested inside one another in the same plane.
  • This charging part of a battery may comprise a regulator or rectifier connected to the secondary coil and a filter.
  • the invention also relates to a motor vehicle comprising a battery for its power supply, characterized in that it comprises a charging device part of its automotive battery according to any one of the preceding claims, including the connector connected to the coil of rescue is able to connect the spare coil to a backup charge kit.
  • the invention also relates to a charging system for a power supply battery of a motor vehicle comprising:
  • a charging device part of a battery as defined above comprising a receiver comprising the secondary coil and a spare coil connected to a connector, and
  • the charging system for a power supply battery of a motor vehicle may comprise a transmitter separate from the emergency kit comprising a primary coil adapted to a connection without contact with the secondary coil to transmit a charging power.
  • the invention also relates to a backup charging kit for charging a battery for powering a motor vehicle, characterized in that it comprises an AC / AC converter and an input mains socket and a connector output circuit, for connection with the connector of a motor vehicle or a backup coil adapted to transfer a charging power without contact to the secondary coil to generate a current in the secondary coil.
  • the backup charge kit for charging a battery pack may be in the form of a mat, incorporating all functions for charging a battery without contact or being connected to a remote part.
  • Figure 1 schematically shows a side view of a motor vehicle charging phase without contact with its battery.
  • FIG. 2 schematically shows in side view an enlarged portion of the battery charging device of a motor vehicle charging phase without contact with its battery.
  • FIG. 3 diagrammatically represents the electrical circuit of the non-contact charging system of a battery of a motor vehicle.
  • FIG. 4 diagrammatically represents the electric circuit of the charging device of a battery according to one embodiment of the invention.
  • FIG. 5 represents the relative positioning of the secondary and emergency coils according to a first solution of the embodiment of the invention.
  • FIG. 6 represents the relative positioning of the secondary and emergency coils according to a second solution of the embodiment of the invention.
  • FIG. 7 diagrammatically represents the electric circuit of the charging device of a battery according to a variant of the embodiment of the invention.
  • Figure 8 shows the charging device of a battery according to a first embodiment of the invention.
  • Figure 9 shows the charging device of a battery according to a second embodiment of the invention.
  • Figures 1 to 3 illustrate more precisely a possible principle of non-contact load operation of a motor vehicle, before the detailed introduction of the solution retained by the present invention.
  • An electric motor vehicle 1 whose motor is supplied with electric energy by a battery, is equipped at its bottom with a non-contact receiver 2 connected to the battery, not shown, which receives a battery.
  • power 9 transmitted by a transmitter 12 through a space 7 between the transmitter 12 and the receiver 2, while the vehicle rests on the ground 8 of a parking space equipped with a transmitter 12, as shown in FIG. 1.
  • the charging system of the vehicle battery therefore consists of two main components that cooperate without contact, a transmitter 12 fixed to the ground 8 and a receiver 2 mounted on the motor vehicle.
  • the transmitter 12 mainly comprises a so-called primary coil 13, which is fixedly positioned at a parking space of a motor vehicle, powered by a resonant circuit which will be described later.
  • This transmitter 12 is advantageously integrated into a volume arranged within the parking space, so that the portion of the transmitter 12 comprising the primary coil 13 does not exceed or slightly above the ground level 8 on which is placed a motor vehicle .
  • the transmitter can be disposed entirely above the ground 8 to facilitate its positioning.
  • FIG. 2 schematically illustrates in side section the relative position of the coil 13 of the transmitter 12, which protrudes slightly above the ground level 8, so as to be at a distance e below the so-called coil secondary 3 of the receiver 2 arranged within the motor vehicle 1, in a vertical direction z.
  • the secondary coil 3 is adapted to receive a power 9 transmitted by the primary coil 13 through the space 7 separating them, called gap, without requiring a physical electrical connection at the motor vehicle.
  • the receiver 2 is advantageously arranged in the underside of the motor vehicle, integrated in the chassis of the vehicle, to minimize the distance e and optimize power transfer through the space 7.
  • This battery charging system can be positioned at different vehicle positions, for example in the front part, in the middle or even in the rear part of the vehicle.
  • the transmitter 12 comprises a connection 15 to the electrical power distribution network or sector 16, an AC / DC converter 17 whose function is to transform the AC current of the sector 16 into a direct current, supplying a DC voltage Vdc. input of an inverter 18 whose function is to transmit an oscillating power at the primary coil 13.
  • the receiver 2 arranged within the motor vehicle, comprises a secondary coil 3 which receives the power transmitted by the primary coil 13, whose generated magnetic field induces an electric current within the secondary coil 3 through the space 7. This electric current passes through a regulator or rectifier 4 and then a filter 1 1 before reaching the battery 10, thus allowing its charge .
  • the charging system is further controlled by a controller 19, which includes software and / or hardware means for implementing a battery charging method.
  • the concept of the invention consists in providing another means of charging the battery so that it can be recharged as simply as possible, when a non-contact charger of the type of the transmitter 12 described above is not available.
  • the solution is based on the presence of a second coil positioned within the motor vehicle, which replaces the primary coil 13 described above when such a coil is not available.
  • FIG. 4 illustrates a charging system according to the invention, including two non-contact charging means of the battery 10. Normally, only one of these means will be operated at a given instant.
  • the charging system of the battery 10 comprises a receiver 2 similar to the previous description provided on board the vehicle.
  • the motor vehicle integrates a second coil of primary type, which we will call a spare coil 23, adapted to an electrical connection with the outside by a connector 24.
  • a backup charge kit 32 can thus be connected to the motor vehicle by this connector 24 so as to supply the backup coil 23 whose function is to induce charging of the battery 10 by a non-contact method.
  • the assembly formed by the kit 32 and the spare coil 23 represents a similar and alternative assembly to the transmitter 12 for charging the battery 10.
  • an additional transmitter 12 as described above can also be provided , so to leave several battery charging options to a driver of the electric vehicle.
  • the charging system of a battery 10 of a motor vehicle therefore comprises a portion 20 within the motor vehicle mainly comprising two coils 3, 23. It further comprises a backup charge kit 32 and a separate transmitter 12 .
  • the backup charging kit 32 is advantageously in the form of a portable apparatus, and mainly comprises an AC / AC converter 37 adapted to transform the sector frequency equal to 50 Hz into a frequency in the range [20 kHz; 150 kHz].
  • the backup charging kit 32 further comprises a mains plug 35 at the input and an output connector 34, for a connection with the connector 24 of a motor vehicle.
  • the vehicle can be equipped with a wireless communication means to interact with the vehicle during a charging phase.
  • a wireless communication means to interact with the vehicle during a charging phase.
  • This allows the regulation of the battery charge, by a transmission of the power level, and allows the emergency charging kit 32 to start charging only when the vehicle is ready to be recharged and to finish charging when the battery is fully charged.
  • the communication means remains optional: the latter management function of the beginning and the end of charging can be done by the output connector 34.
  • the charge of the battery 10 is necessary and no transmitter 12 is available, it is sufficient to connect the vehicle to the sector via a charging kit 32 to implement a charging process of battery.
  • This kit is simple, compact and lightweight, which makes it easy to transport and handle.
  • the spare coil 23 is positioned relative to the secondary coil 3 within the motor vehicle so as to allow the transfer of power optimally between the two coils.
  • FIG. 5 represents for this purpose a first solution, in which the spare coil 23 is superimposed on the secondary coil 3.
  • the distance e between these two coils will advantageously be very small to allow optimized power transfer.
  • FIG. 6 represents a second solution in which the two secondary and backup coils 23 are interleaved, their turns being alternated in the same plane. In both cases, the two coils have substantially the same diameter.
  • the invention is not limited to these two embodiments described and the two coils could have other shapes and dimensions without departing from the concept of the invention.
  • the invention has been described on the basis of an emergency kit 32 for charging the battery of a motor vehicle.
  • the invention thus relates to a charging system comprising two complementary coils within the motor vehicle, the emergency kit may represent the only external charging device of the battery.
  • the concept of the invention remains compatible and applicable to any other transmitter, such as a battery transmitter 12 fixed at ground level and as described above, or a transmitter for example portable, mobile, or a transmitter that would not be fixed at ground level but on a wall, able to cooperate with a receiver placed in correspondence on the vehicle.
  • the two charging means 12, 32 parallel charging system could be used simultaneously to accelerate the charging process of the battery (4 hours for 6kW instead of 7 hours for 3kW), according to the method of following charge:
  • the integration of the spare coil 23 within the vehicle has the advantage of allowing an optimal and reliable alignment of the two coils 3, 23, and a high degree of safety, since it is not necessary to provide an anti-jamming system. intrusion.
  • the emergency coil 23 'could however be deported within the emergency charging kit 32' instead of being in the motor vehicle, in order to be able to operate the emergency kit with any vehicle, even if it requires a more bulky backup kit.
  • the emergency kit 32 ' may be in the form of a carpet 38', of substantially rectangular format 90 by 90 cm and less than 10 cm in height, including the spare coil 23 '.
  • this carpet 38 In the first embodiment shown in Figure 8, this carpet 38 'incorporates all the essential functions, and can be connected to the sector not a single wire and a socket 35'.
  • a part 39 'of the supply function more specifically corresponding to or including the AC-AC converter, is offset from the mat 38', and disposed between the mains plug 35 'and the mat .

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  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Power Engineering (AREA)
  • Transportation (AREA)
  • Mechanical Engineering (AREA)
  • Charge And Discharge Circuits For Batteries Or The Like (AREA)
  • Electric Propulsion And Braking For Vehicles (AREA)

Abstract

The invention relates to part of a device for charging a battery (10), intended to be mounted inside a motor vehicle, characterised in that it comprises: a secondary coil (3) that can be connected to the battery (10) so that it can transmit a charge current thereto; and a backup coil (23) that can be connected electrically so that it can transfer a charge power in a contactless manner to the secondary coil (3) in order to generate a current in the secondary coil.

Description

CHARGE SANS CONTACT D'UNE BATTERIE DE VEHICULE  CONTACTLESS CHARGE OF A VEHICLE BATTERY
AUTOMOBILE  AUTOMOBILE
La présente invention concerne un système de charge d'une batterie de véhicule automobile. Elle concerne aussi une partie de ce système destinée à un montage au sein d'un véh icule automobile ainsi qu'un véhicule automobile en tant que tel comprenant ce dispositif interne de charge de batterie. Certains véhicules automobiles disposent d'une chaîne de traction électrique, comme les véhicules électriques ne disposant que d'une chaîne de traction électrique ou les véhicules hybrides disposant à la fois d'une chaîne de traction thermique et électrique. Ces véhicules peuvent être équipés d'une batterie qui est rechargée à l'aide d'un chargeur quand elle est déchargée. The present invention relates to a charging system of a motor vehicle battery. It also relates to a part of this system intended for mounting within an automotive vehicle as well as a motor vehicle as such comprising this internal battery charging device. Some motor vehicles have an electric powertrain, such as electric vehicles with only an electric powertrain or hybrid vehicles with both a thermal and electric drivetrain. These vehicles can be equipped with a battery that is recharged using a charger when it is discharged.
Une première famille de solutions de charge d'une batterie de véhicule automobile, dites « avec contact », repose sur une connexion électrique directe et continue entre la batterie et le chargeur, ce dernier délivrant ainsi un courant électrique à la batterie au travers de cette connexion qui permet la charge de la batterie. Une première approche consiste à exploiter le réseau électrique : cela permet la charge de la batterie à partir de faibles puissances, de l'ordre de 3 kW, ce qui exige une longue durée de charge de plusieurs heures. Selon une seconde approche, des chargeurs puissants sont utilisés, offrant par exemple une puissance pouvant aller jusqu'à 100 kW. Toutes les solutions de charge de batterie avec contact présentent de plus les inconvénients suivants : A first family of charging solutions of a motor vehicle battery, called "with contact", based on a direct and continuous electrical connection between the battery and the charger, the latter thus delivering an electric current to the battery through this connection that allows charging the battery. A first approach is to use the power grid: this allows the battery to be charged from low power, of the order of 3 kW, which requires a long charging time of several hours. According to a second approach, powerful chargers are used, for example offering a power of up to 100 kW. All contact battery charging solutions have the following disadvantages:
- la corrosion des contacts électriques au niveau de la connexion entre le chargeur, la batterie et les prises du réseau alternatif réduit leur fiabilité;  - the corrosion of the electrical contacts at the connection between the charger, the battery and the AC mains reduces their reliability;
- la connexion avec contact est délicate à assurer en milieu humide; - la connexion avec contact nécessite des manipulations électriques, est peu conviviale et nécessite généralement des dispositifs gérant l'hygiène du câble de recharge, par exemple un enrouleur. Une seconde famille de solutions de charge de batterie de véhicule automobile, dites « sans contact », repose sur une charge à distance par l'intermédiaire d'un système de charge, appelé aussi « chargeur », doté d'une partie primaire émettrice comprenant notamment une bobine primaire, que nous appelons plus simplement « émetteur », qui coopère avec une partie secondaire réceptrice comprenant notamment une bobine secondaire, que nous appelons plus simplement « récepteur », montée sur le véhicule automobile et reliée à la batterie à recharger. La bobine primaire transmet ainsi un champ magnétique suffisant pour induire le courant de charge nécessaire à la charge de la batterie au niveau de la bobine secondaire. Le document US5654621 décrit une telle solution. - The connection with contact is difficult to ensure in a humid environment; - The connection with contact requires electrical manipulation, is not very user-friendly and generally requires devices managing the hygiene of the charging cable, for example a winder. A second family of automotive battery charging solutions, called "non-contact", relies on remote charging via a charging system, also called "charger", having a transmitting primary portion comprising in particular a primary coil, which we more simply call "transmitter", which cooperates with a receiving secondary part comprising in particular a secondary coil, which we more simply call "receiver", mounted on the motor vehicle and connected to the battery to be recharged. The primary coil thus transmits a magnetic field sufficient to induce the charging current required for charging the battery at the secondary coil. US5654621 discloses such a solution.
L'inconvénient des solutions « sans contact » est qu'elles nécessitent la présence d'un chargeur sans contact pour la recharge. Or de tels chargeurs ne sont pas disponibles partout. Ainsi, si le véhicule automobile nécessite une charge de sa batterie loin de tout système de charge, cette solution devient peu conviviale pu isqu'il faut alors faire un grand détour pour atteindre un lieu de charge, tout en risquant une panne. The disadvantage of "contactless" solutions is that they require the presence of a contactless charger for charging. But such chargers are not available everywhere. Thus, if the motor vehicle requires a charge of its battery away from any charging system, this solution becomes uncomfortable if it is then necessary to make a great detour to reach a place of charge, while risking a failure.
Ainsi, l'invention a pour objet de proposer une solution de charge d'une batterie de véhicule automobile qui ne présente pas tout ou partie des inconvénients de l'état de la technique. Thus, the object of the invention is to propose a charging solution for a motor vehicle battery which does not have all or some of the disadvantages of the state of the art.
A cet effet, l'invention repose sur une partie de dispositif de charge d'une batterie de traction, ladite partie étant destinée à être montée au sein d'un véh icule automobile et comprenant une bobine secondaire apte à une connexion avec la batterie de sorte de pouvoir lui transmettre un courant de charge, ladite bobine secondaire étant apte à la réception d'une puissance de charge sans contact transmise par une bobine primaire extérieure audit véhicule, caractérisée en ce qu'elle comporte en outre une bobine de secours liée à un connecteur permettant de recevoir un courant de charge de l'extérieur du véhicule, la bobine de secours étant apte à transférer une puissance de charge sans contact vers la bobine secondaire pour générer un courant de charge dans cette bobine secondaire. For this purpose, the invention is based on a part of the charging device of a traction battery, said part being intended to be mounted within a motor vehicle and comprising a secondary coil suitable for connection with the battery of kind of being able to transmit him a current of charge, said secondary coil being adapted to receive a non-contact charging power transmitted by a primary coil outside said vehicle, characterized in that it further comprises a spare coil connected to a connector for receiving a current of charging the outside of the vehicle, the backup coil being able to transfer a charging power without contact to the secondary coil to generate a charging current in the secondary coil.
La bobine de secours et la bobine secondaire peuvent être superposées. The spare coil and the secondary coil can be stacked.
La bobine de secours et la bobine secondaire peuvent être imbriquées l'une dans l'autre dans un même plan. The spare coil and the secondary coil can be nested inside one another in the same plane.
Cette partie de dispositif de charge d'une batterie peut comprendre un régulateur ou redresseur reliée à la bobine secondaire et un filtre. This charging part of a battery may comprise a regulator or rectifier connected to the secondary coil and a filter.
L'invention porte aussi sur un véhicule automobile comprenant une batterie pour son alimentation, caractérisé en ce qu'il comprend une partie de dispositif de charge de sa batterie automobile selon l'une quelconque des revendications précédentes, dont le connecteur lié à la bobine de secours est apte à relier la bobine de secours à un kit de charge de secours. The invention also relates to a motor vehicle comprising a battery for its power supply, characterized in that it comprises a charging device part of its automotive battery according to any one of the preceding claims, including the connector connected to the coil of rescue is able to connect the spare coil to a backup charge kit.
L'invention porte aussi sur un système de charge pour batterie d'alimentation électrique d'un véhicule automobile comprenant : The invention also relates to a charging system for a power supply battery of a motor vehicle comprising:
- une partie de dispositif de charge d'une batterie telle que définie ci-dessus, comprenant un récepteur comprenant la bobine secondaire et une bobine de secours reliée à un connecteur, et a charging device part of a battery as defined above, comprising a receiver comprising the secondary coil and a spare coil connected to a connector, and
- un kit de secours comprenant un convertisseur AC/AC, une prise secteur et une prise de sortie apte à une connexion avec le connecteur. Le système de charge pour batterie d'alimentation électrique d'un véhicule automobile peut comprendre un émetteur distinct du kit de secours comprenant une bobine primaire apte à une liaison sans contact avec la bobine secondaire pour lui transmettre une puissance de charge. - a backup kit including an AC / AC converter, a power outlet and an outlet capable of connection with the connector. The charging system for a power supply battery of a motor vehicle may comprise a transmitter separate from the emergency kit comprising a primary coil adapted to a connection without contact with the secondary coil to transmit a charging power.
L'invention porte aussi sur un kit de charge de secours pour la charge d'une batterie d'alimentation électrique d'un véhicule automobile, caractérisé en ce qu'il comprend un convertisseur AC/AC et une prise secteur en entrée et un connecteur de sortie, destiné à une liaison avec le connecteur d'un véhicule automobile ou une bobine de secours apte à transférer une puissance de charge sans contact vers la bobine secondaire pour générer un courant dans cette bobine secondaire. The invention also relates to a backup charging kit for charging a battery for powering a motor vehicle, characterized in that it comprises an AC / AC converter and an input mains socket and a connector output circuit, for connection with the connector of a motor vehicle or a backup coil adapted to transfer a charging power without contact to the secondary coil to generate a current in the secondary coil.
Le kit de charge de secours pour la charge d'une batterie d'alimentation électrique peut se présenter sous la forme d'un tapis, intégrant toutes les fonctions pour la charge d'une batterie sans contact ou étant relié à une partie déportée. The backup charge kit for charging a battery pack may be in the form of a mat, incorporating all functions for charging a battery without contact or being connected to a remote part.
Ces objets, caractéristiques et avantages de la présente invention seront exposés en détail dans la description suivante de modes d'exécution particuliers faits à titre non-limitatif en relation avec les figures jointes parmi lesquelles : These objects, features and advantages of the present invention will be set forth in detail in the following description of particular embodiments given in a non-limiting manner in relation to the appended figures among which:
La figure 1 représente schématiquement en vue de côté un véhicule automobile en phase de charge sans contact de sa batterie. Figure 1 schematically shows a side view of a motor vehicle charging phase without contact with its battery.
La figure 2 représente schématiquement en vue de côté une partie agrandie du dispositif de charge de batterie d'un véhicule automobile en phase de charge sans contact de sa batterie. La figure 3 représente schématiquement le circuit électrique du système de charge sans contact d'une batterie d'un véhicule automobile. 2 schematically shows in side view an enlarged portion of the battery charging device of a motor vehicle charging phase without contact with its battery. FIG. 3 diagrammatically represents the electrical circuit of the non-contact charging system of a battery of a motor vehicle.
La figure 4 représente schématiquement le circuit électrique du dispositif de charge d'une batterie selon un mode d'exécution de l'invention. FIG. 4 diagrammatically represents the electric circuit of the charging device of a battery according to one embodiment of the invention.
La figure 5 représente le positionnement relatif des bobines secondaire et de secours selon une première solution du mode d'exécution de l'invention. La figure 6 représente le positionnement relatif des bobines secondaire et de secours selon une seconde solution du mode d'exécution de l'invention. FIG. 5 represents the relative positioning of the secondary and emergency coils according to a first solution of the embodiment of the invention. FIG. 6 represents the relative positioning of the secondary and emergency coils according to a second solution of the embodiment of the invention.
La figure 7 représente schématiquement le circuit électrique du dispositif de charge d'une batterie selon une variante du mode d'exécution de l'invention. FIG. 7 diagrammatically represents the electric circuit of the charging device of a battery according to a variant of the embodiment of the invention.
La figure 8 représente le dispositif de charge d'une batterie selon une première réalisation de l'invention. Figure 8 shows the charging device of a battery according to a first embodiment of the invention.
La figure 9 représente le dispositif de charge d'une batterie selon une seconde réalisation de l'invention. Figure 9 shows the charging device of a battery according to a second embodiment of the invention.
A titre non limitatif, l'invention sera décrite en relation avec un véhicule automobile électrique. Les figures 1 à 3 illustrent plus précisément un principe possible de fonctionnement de charge sans contact d'un véhicule automobile, avant l'introduction détaillée de la solution retenue par la présente invention. Without limitation, the invention will be described in connection with an electric motor vehicle. Figures 1 to 3 illustrate more precisely a possible principle of non-contact load operation of a motor vehicle, before the detailed introduction of the solution retained by the present invention.
Un véhicule automobile 1 électrique, dont le moteur est alimenté en énergie électrique par une batterie, est équipé dans son bas de ca isse d'u n récepteur 2 sans contact relié à la batterie non représentée, qui reçoit une puissance 9 transmise par un émetteur 12 au travers un espace 7 entre l'émetteur 12 et le récepteur 2, alors que le véhicule repose sur le sol 8 d'une place de stationnement équipée d'un émetteur 12, tel que représenté sur la figure 1 . Le système de charge de la batterie du véhicule se compose donc de deux composants principaux qui coopèrent sans contact, un émetteur 12 fixé au sol 8 et un récepteur 2 monté sur le véhicule automobile. An electric motor vehicle 1, whose motor is supplied with electric energy by a battery, is equipped at its bottom with a non-contact receiver 2 connected to the battery, not shown, which receives a battery. power 9 transmitted by a transmitter 12 through a space 7 between the transmitter 12 and the receiver 2, while the vehicle rests on the ground 8 of a parking space equipped with a transmitter 12, as shown in FIG. 1. The charging system of the vehicle battery therefore consists of two main components that cooperate without contact, a transmitter 12 fixed to the ground 8 and a receiver 2 mounted on the motor vehicle.
L'émetteur 12 comprend principalement une bobine 13 dite primaire, qui est positionnée de manière fixe au niveau d'une place de stationnement d'un véhicule automobile, alimentée par un circuit résonnant qui sera décrit par la suite. Cet émetteur 12 est avantageusement intégré dans un volume aménagé au sein de la place de stationnement, de sorte que la partie de l'émetteur 12 comprenant la bobine primaire 13 ne dépasse pas ou peu du niveau du sol 8 sur lequel se place un véhicule automobile. En variante, l'émetteur peut être disposé entièrement au-dessus du sol 8 pour faciliter son positionnement. The transmitter 12 mainly comprises a so-called primary coil 13, which is fixedly positioned at a parking space of a motor vehicle, powered by a resonant circuit which will be described later. This transmitter 12 is advantageously integrated into a volume arranged within the parking space, so that the portion of the transmitter 12 comprising the primary coil 13 does not exceed or slightly above the ground level 8 on which is placed a motor vehicle . Alternatively, the transmitter can be disposed entirely above the ground 8 to facilitate its positioning.
La figure 2 illustre schématiquement en coupe de côté la position relative de la bobine 13 de l'émetteur 12, qui dépasse légèrement au-dessus du niveau du sol 8, de sorte de se trouver à une distance e au-dessous de la bobine dite secondaire 3 du récepteur 2 aménagé au sein du véhicule automobile 1 , dans une d irection verticale z. La bobine secondaire 3 est apte à la réception d'une puissance 9 transmise par la bobine primaire 13 au travers de l'espace 7 les séparant, appelé entrefer, sans nécessiter de connexion électrique physique au niveau du véhicule automobile. Le récepteur 2 est avantageusement aménagé dans le bas de caisse du véhicule automobile, intégré dans le châssis du véhicule, pour minimiser la distance e et optimiser le transfert de puissance au travers de l'espace 7. Ce système de charge de batterie peut être positionné à différentes positions du véhicule, par exemple en partie avant, au milieu ou bien encore en partie arrière du véhicule. La figure 3 représente de manière simplifiée le schéma électrique du système de charge sans contact d'une batterie 10 de véhicule automobile prévu pour un tel véhicule. L'émetteur 12 comprend une connexion 15 vers le réseau de distribution d'énergie électrique ou secteur 16, un convertisseur AC/DC 17 dont la fonction est de transformer le courant alternatif du secteur 16 en un courant continu, fournissant une tension continue Vdc en entrée d'un onduleur 18 dont la fonction est de transmettre une puissance oscillante au niveau de la bobine primaire 13. Le récepteur 2, agencé au sein du véhicule automobile, comprend une bobine secondaire 3 qui reçoit la puissance transmise par la bobine primaire 13, dont le champ magnétique généré induit un courant électrique au sein de la bobine secondaire 3 au travers de l'espace 7. Ce courant électrique traverse un régulateur ou redresseur 4 puis un filtre 1 1 avant d'atteindre la batterie 10, permettant ainsi sa charge. Le système de charge est de plus contrôlé par un dispositif de commande 19, qui comprend des moyens logiciels et/ou matériels pour mettre en œuvre un procédé de charge de batterie. 2 schematically illustrates in side section the relative position of the coil 13 of the transmitter 12, which protrudes slightly above the ground level 8, so as to be at a distance e below the so-called coil secondary 3 of the receiver 2 arranged within the motor vehicle 1, in a vertical direction z. The secondary coil 3 is adapted to receive a power 9 transmitted by the primary coil 13 through the space 7 separating them, called gap, without requiring a physical electrical connection at the motor vehicle. The receiver 2 is advantageously arranged in the underside of the motor vehicle, integrated in the chassis of the vehicle, to minimize the distance e and optimize power transfer through the space 7. This battery charging system can be positioned at different vehicle positions, for example in the front part, in the middle or even in the rear part of the vehicle. FIG. 3 is a simplified diagram of the non-contact charging system of a motor vehicle battery 10 provided for such a vehicle. The transmitter 12 comprises a connection 15 to the electrical power distribution network or sector 16, an AC / DC converter 17 whose function is to transform the AC current of the sector 16 into a direct current, supplying a DC voltage Vdc. input of an inverter 18 whose function is to transmit an oscillating power at the primary coil 13. The receiver 2, arranged within the motor vehicle, comprises a secondary coil 3 which receives the power transmitted by the primary coil 13, whose generated magnetic field induces an electric current within the secondary coil 3 through the space 7. This electric current passes through a regulator or rectifier 4 and then a filter 1 1 before reaching the battery 10, thus allowing its charge . The charging system is further controlled by a controller 19, which includes software and / or hardware means for implementing a battery charging method.
Le concept de l'invention consiste à prévoir un autre moyen de charge de la batterie pour pouvoir la recharger le plus simplement possible, lorsqu'un chargeur sans contact du type de l'émetteur 12 décrit ci-dessus n'est pas disponible. La solution repose sur la présence d'une seconde bobine positionnée au sein du véhicule automobile, qui se substitue à la bobine primaire 13 décrite précédemment lorsqu'une telle bobine n'est pas disponible. The concept of the invention consists in providing another means of charging the battery so that it can be recharged as simply as possible, when a non-contact charger of the type of the transmitter 12 described above is not available. The solution is based on the presence of a second coil positioned within the motor vehicle, which replaces the primary coil 13 described above when such a coil is not available.
La figure 4 illustre un système de charge selon l'invention, incluant deux moyens de charge sans contact de la batterie 10. Normalement, un seul de ces moyens sera exploité à un instant donné. Ainsi, le système de charge de la batterie 10 comprend un récepteur 2 similaire à la description précédente prévu à bord du véhicule. En revanche, le véhicule automobile intègre une seconde bobine de type primaire, que nous appellerons bobine de secours 23, apte à une liaison électrique avec l'extérieur par un connecteur 24. Un kit de charge de secours 32 peut ainsi être connecté au véhicule automobile par ce connecteur 24 de sorte d'alimenter la bobine de secours 23 dont la fonction est d'induire la charge de la batterie 10 par un procédé sans contact. Ainsi, l'ensemble formé par le kit 32 et la bobine de secours 23 représente un ensemble similaire et alternatif à l'émetteur 12 pour la charge de la batterie 10. En option, un émetteur supplémentaire 12 tel que décrit précédemment peut aussi être prévu, de sorte de laisser plusieurs options de charge de batterie à un conducteur du véhicule électrique. FIG. 4 illustrates a charging system according to the invention, including two non-contact charging means of the battery 10. Normally, only one of these means will be operated at a given instant. Thus, the charging system of the battery 10 comprises a receiver 2 similar to the previous description provided on board the vehicle. On the other hand, the motor vehicle integrates a second coil of primary type, which we will call a spare coil 23, adapted to an electrical connection with the outside by a connector 24. A backup charge kit 32 can thus be connected to the motor vehicle by this connector 24 so as to supply the backup coil 23 whose function is to induce charging of the battery 10 by a non-contact method. Thus, the assembly formed by the kit 32 and the spare coil 23 represents a similar and alternative assembly to the transmitter 12 for charging the battery 10. Optionally, an additional transmitter 12 as described above can also be provided , so to leave several battery charging options to a driver of the electric vehicle.
Finalement, le système de charge d'une batterie 10 d'un véhicule automobile comprend donc une partie 20 au sein du véhicule automobile comprenant principalement deux bobines 3, 23. Il comprend de plus un kit de charge de secours 32 et un émetteur distinct 12. Finally, the charging system of a battery 10 of a motor vehicle therefore comprises a portion 20 within the motor vehicle mainly comprising two coils 3, 23. It further comprises a backup charge kit 32 and a separate transmitter 12 .
Le kit de charge de secours 32 se présente avantageusement sous la forme d'un appareil portable, et comprend principalement un convertisseur AC/AC 37 adapté pour transformer la fréquence du secteur égale à 50 Hz en une fréquence comprise dans la fourchette [20 kHz ; 150 kHz]. Le kit de charge de secours 32 comprend de plus une prise secteur 35 en entrée et un connecteur de sortie 34, destiné à une liaison avec le connecteur 24 d'un véhicule automobile. The backup charging kit 32 is advantageously in the form of a portable apparatus, and mainly comprises an AC / AC converter 37 adapted to transform the sector frequency equal to 50 Hz into a frequency in the range [20 kHz; 150 kHz]. The backup charging kit 32 further comprises a mains plug 35 at the input and an output connector 34, for a connection with the connector 24 of a motor vehicle.
En option, il peut être équipé d'un moyen de communication sans fil pour dialoguer avec le véhicule pendant une phase de charge. Cela permet la régulation de la charge de la batterie, par une transmission du niveau de puissance, et permet au kit de charge de secours 32 de ne commencer la charge que lorsque le véhicule est prêt à être rechargé et de terminer la charge quand la batterie est entièrement chargée. Toutefois, le moyen de communication reste optionnel : cette dernière fonction de gestion du début et de la fin de charge peut être faite par le connecteur de sortie 34. Ainsi, quand la charge de la batterie 10 est nécessaire et qu'aucun émetteur 12 n'est disponible, il suffit de relier le véhicule au secteur par l'intermédiaire d'un kit de charge 32 pour mettre en œuvre un procédé de charge de la batterie. Ce kit est simple, peu encombrant et léger, ce qui rend son transport et sa manipulation aisés. Optionally, it can be equipped with a wireless communication means to interact with the vehicle during a charging phase. This allows the regulation of the battery charge, by a transmission of the power level, and allows the emergency charging kit 32 to start charging only when the vehicle is ready to be recharged and to finish charging when the battery is fully charged. However, the communication means remains optional: the latter management function of the beginning and the end of charging can be done by the output connector 34. Thus, when the charge of the battery 10 is necessary and no transmitter 12 is available, it is sufficient to connect the vehicle to the sector via a charging kit 32 to implement a charging process of battery. This kit is simple, compact and lightweight, which makes it easy to transport and handle.
La bobine de secours 23 est positionnée relativement à la bobine secondaire 3 au sein du véhicule automobile de sorte de permettre le transfert de puissance de manière optimale entre les deux bobines. La figure 5 représente à cet effet une première solution, dans laquelle la bobine de secours 23 est superposée à la bobine secondaire 3. Naturellement, la distance e entre ces deux bobines sera avantageusement très faible pour permettre un transfert de puissance optimisé. La figure 6 représente une seconde solution dans laquelle les deux bobines secondaire 3 et de secours 23 sont imbriquées, leurs spires étant alternées dans un même plan. Dans les deux cas, les deux bobines présentent sensiblement le même diamètre. Naturellement, l'invention ne se limite pas à ces deux réalisations décrites et les deux bobines pourraient présenter d'autres formes et dimensions sans sortir du concept de l'invention. The spare coil 23 is positioned relative to the secondary coil 3 within the motor vehicle so as to allow the transfer of power optimally between the two coils. FIG. 5 represents for this purpose a first solution, in which the spare coil 23 is superimposed on the secondary coil 3. Naturally, the distance e between these two coils will advantageously be very small to allow optimized power transfer. FIG. 6 represents a second solution in which the two secondary and backup coils 23 are interleaved, their turns being alternated in the same plane. In both cases, the two coils have substantially the same diameter. Naturally, the invention is not limited to these two embodiments described and the two coils could have other shapes and dimensions without departing from the concept of the invention.
L'invention a été décrite sur la base d'un kit de secours 32 permettant la charge de la batterie d'un véhicule automobile. L'invention porte ainsi sur un système de charge comprenant deux bobines complémentaires au sein du véhicule automobile, le kit de secours pouvant représenter le seul dispositif extérieur de charge de la batterie. Toutefois, le concept de l'invention reste compatible et applicable à tout autre émetteur, comme un émetteur 12 de batterie fixé au niveau du sol et tel que décrit précédemment, ou un émetteur par exemple portatif, mobile, ou un émetteur qui ne serait pas fixé au niveau du sol mais sur un mur, apte à coopérer avec un récepteur placé en correspondance sur le véhicule. En variante, les deux moyens de charge 12, 32 parallèles du système de charge pourraient être utilisés simultanément de sorte d'accélérer le processus de charge de la batterie (4 heures pour 6kW au lieu de 7 heures pour 3kW), selon le procédé de charge suivant : The invention has been described on the basis of an emergency kit 32 for charging the battery of a motor vehicle. The invention thus relates to a charging system comprising two complementary coils within the motor vehicle, the emergency kit may represent the only external charging device of the battery. However, the concept of the invention remains compatible and applicable to any other transmitter, such as a battery transmitter 12 fixed at ground level and as described above, or a transmitter for example portable, mobile, or a transmitter that would not be fixed at ground level but on a wall, able to cooperate with a receiver placed in correspondence on the vehicle. Alternatively, the two charging means 12, 32 parallel charging system could be used simultaneously to accelerate the charging process of the battery (4 hours for 6kW instead of 7 hours for 3kW), according to the method of following charge:
- positionnement du véhicule automobile à proximité d'un émetteur (12) dont une bobine primaire (13) transmet une première puissance de charge à la batterie (10) du véhicule par l'intermédiaire d'une bobine secondaire (3) montée à bord du véhicule automobile ;  positioning the motor vehicle near a transmitter (12) having a primary coil (13) transmitting a first charging power to the battery (10) of the vehicle via a secondary coil (3) mounted on board the motor vehicle;
- connexion électrique au secteur d'une bobine de secours (23) montée à bord du véhicule automobile pour transmettre simultanément une seconde puissance de charge à la batterie (10).  - electrical connection to the sector of a spare coil (23) mounted on board the motor vehicle for simultaneously transmitting a second load power to the battery (10).
L'intégration de la bobine de secours 23 au sein du véhicule présente l'avantage de permettre un alignement optimal et fiable des deux bobines 3, 23, et une grande sécurité, puisqu'il n'est pas nécessaire de prévoir un système anti-intrusion. En variante illustrée sur la figure 7, la bobine de secours 23' pourrait toutefois être déportée au sein du kit de charge de secours 32' au lieu de se trouver dans le véhicule automobile, afin de pouvoir exploiter le kit de secours avec tout véhicule, même si cela nécessite un kit de secours plus encombrant. Dans un tel cas, le kit de secours 32' peut se présenter sous la forme d'un tapis 38', de format sensiblement rectangulaire de 90 par 90 cm et de hauteur inférieure à 10 cm, intégrant notamment la bobine de secours 23'. Dans la première réalisation représentée sur la figure 8, ce tapis 38' intègre toutes les fonctions essentielles, et peut être relié au secteur pas un simple fil et une prise secteur 35'. Dans la seconde réalisation de la figure 9, une partie 39' de la fonction d'alimentation, plus précisément correspondant ou incluant le convertisseur AC-AC, est déportée hors du tapis 38', et disposée entre la prise secteur 35' et le tapis. The integration of the spare coil 23 within the vehicle has the advantage of allowing an optimal and reliable alignment of the two coils 3, 23, and a high degree of safety, since it is not necessary to provide an anti-jamming system. intrusion. As a variant illustrated in FIG. 7, the emergency coil 23 'could however be deported within the emergency charging kit 32' instead of being in the motor vehicle, in order to be able to operate the emergency kit with any vehicle, even if it requires a more bulky backup kit. In such a case, the emergency kit 32 'may be in the form of a carpet 38', of substantially rectangular format 90 by 90 cm and less than 10 cm in height, including the spare coil 23 '. In the first embodiment shown in Figure 8, this carpet 38 'incorporates all the essential functions, and can be connected to the sector not a single wire and a socket 35'. In the second embodiment of FIG. 9, a part 39 'of the supply function, more specifically corresponding to or including the AC-AC converter, is offset from the mat 38', and disposed between the mains plug 35 'and the mat .

Claims

Revendications  claims
Partie de dispositif de charge d'une batterie (10) de traction, ladite partie étant destinée à être montée au sein d'un véhicule automobile et comprenant une bobine secondaire (3) apte à une connexion avec la batterie (10) de sorte de pouvoir lui transmettre un courant de charge, ladite bobine secondaire étant apte à la réception d'une puissance de charge sans contact transmise par une bobine primaire extérieure audit véhicule, caractérisée en ce qu'elle comporte en outre une bobine de secours (23) liée à un connecteur permettant de recevoir un courant de charge de l'extérieur du véhicule, la bobine de secours étant apte à transférer une puissance de charge sans contact vers la bobine secondaire (3) pour générer un courant de charge dans cette bobine secondaire. A charging device part of a traction battery (10), said part being intended to be mounted within a motor vehicle and comprising a secondary coil (3) suitable for connection with the battery (10) so that it is possible for it to transmit a charging current to it, said secondary coil being able to receive a non-contact charging power transmitted by a primary coil outside said vehicle, characterized in that it further comprises a backup coil (23) connected a connector for receiving a charging current from outside the vehicle, the backup coil being adapted to transfer a charging power without contact to the secondary coil (3) to generate a charging current in the secondary coil.
Partie de dispositif de charge d'une batterie (10) automobile selon la revendication précédente, caractérisée en ce que la bobine de secours (23) et la bobine secondaire (3) sont superposées. Part of the charging device of a battery (10) automobile according to the preceding claim, characterized in that the spare coil (23) and the secondary coil (3) are superimposed.
Partie de dispositif de charge d'une batterie (10) automobile selon la revendication 1 , caractérisée en ce que la bobine de secours (23) et la bobine secondaire (3) sont imbriquées l'une dans l'autre dans un même plan. Load cell part of an automobile battery (10) according to claim 1, characterized in that the spare coil (23) and the secondary coil (3) are nested one inside the other in the same plane.
Partie de dispositif de charge d'une batterie (10) automobile selon l'une quelconque des revendications précédentes, caractérisée en ce qu'elle comprend un régulateur ou redresseur (4) reliée à la bobine secondaire (3) et un filtre (1 1 ). Load cell part of an automobile battery (10) according to one of the preceding claims, characterized in that it comprises a regulator or rectifier (4) connected to the secondary coil (3) and a filter (1 1 ).
Véhicule automobile comprenant une batterie (10) pour son alimentation, caractérisé en ce qu'il comprend une partie (20) de dispositif de charge de sa batterie (10) automobile selon l'une quelconque des revendications précédentes, dont le connecteur (24) lié à la bobine de secours (23) est apte à relier la bobine de secours à un kit de charge de secours (32). Motor vehicle comprising a battery (10) for its power supply, characterized in that it comprises a part (20) of charging device for its car battery (10) according to any one of the preceding claims, whose connector (24) connected to the spare coil (23) is able to connect the spare coil to a backup charge kit ( 32).
Système de charge pour batterie (10) d'alimentation électrique d'un véhicule automobile comprenant : Charging system for a battery (10) for powering a motor vehicle comprising:
- une partie de dispositif de charge d'une batterie (10) selon l'une des revendications 1 à 4, comprenant un récepteur (2) comprenant la bobine secondaire (3) et une bobine de secours (23) reliée à un connecteur (24), et  a charging part of a battery (10) according to one of claims 1 to 4, comprising a receiver (2) comprising the secondary coil (3) and a spare coil (23) connected to a connector ( 24), and
- un kit de secours (32) comprenant un convertisseur AC/AC (37), une prise secteur (35) et une prise de sortie (34) apte à une connexion avec le connecteur (24).  - A backup kit (32) comprising an AC / AC converter (37), a power outlet (35) and an output socket (34) suitable for connection with the connector (24).
Système de charge pour batterie (10) d'alimentation électrique d'un véhicule automobile selon la revendication précédente, caractérisé en ce qu'il comprend un émetteur (12) distinct du kit de secours (32) comprenant une bobine primaire (13) apte à une liaison sans contact avec la bobine secondaire (3) pour lui transmettre une puissance de charge. Charging system for a battery (10) for powering a motor vehicle according to the preceding claim, characterized in that it comprises a transmitter (12) separate from the emergency kit (32) comprising a primary coil (13) suitable for contactless connection with the secondary coil (3) to transmit a charging power thereto.
Kit de charge de secours pour la charge d'une batterie d'alimentation électrique d'un véhicule automobile, comprenant un convertisseur AC/AC (37) avec une prise secteur (35) en entrée et un connecteur de sortie (34) destiné à une liaison avec une bobine de secours (23') apte à transférer une puissance de charge sans contact vers la bobine secondaire (3) pour générer un courant dans cette bobine secondaire, caractérisé en ce qu'il se présente sous la forme d'un tapis (38') intégrant toutes les fonctions pour la charge d'une batterie sans contact ou étant relié à une partie déportée Backup charging kit for charging a motor vehicle power supply battery, comprising an AC / AC converter (37) with an input power plug (35) and an output connector (34) for a connection with a spare coil (23 ') able to transfer a charge power without contact to the secondary coil (3) to generate a current in this secondary coil, characterized in that it is in the form of a carpet (38 ') incorporating all the functions for the load a battery without contact or connected to a remote part
PCT/FR2011/052276 2010-10-01 2011-09-29 Contactless charging of a motor vehicle battery WO2012042179A2 (en)

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FR1057973 2010-10-01
FR1057973A FR2965678B1 (en) 2010-10-01 2010-10-01 NON-CONTACT CHARGE OF A MOTOR VEHICLE BATTERY.

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WO2012042179A3 WO2012042179A3 (en) 2013-08-08

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US20210265109A1 (en) * 2013-11-25 2021-08-26 A.K. Stamping Company, Inc. Wireless Charging Coil
US11862383B2 (en) 2013-11-25 2024-01-02 A.K. Stamping Company, Inc. Wireless charging coil

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