EP3749542A1 - Dispositif de charge inductive et procédé de surveillance d'un dispositif de charge inductive - Google Patents

Dispositif de charge inductive et procédé de surveillance d'un dispositif de charge inductive

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Publication number
EP3749542A1
EP3749542A1 EP19702432.6A EP19702432A EP3749542A1 EP 3749542 A1 EP3749542 A1 EP 3749542A1 EP 19702432 A EP19702432 A EP 19702432A EP 3749542 A1 EP3749542 A1 EP 3749542A1
Authority
EP
European Patent Office
Prior art keywords
mod
sensor
active
passive
coil structure
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Withdrawn
Application number
EP19702432.6A
Other languages
German (de)
English (en)
Inventor
Philipp Schumann
Gabriel Krein
Moritz Braeuchle
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Robert Bosch GmbH
Original Assignee
Robert Bosch GmbH
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Robert Bosch GmbH filed Critical Robert Bosch GmbH
Publication of EP3749542A1 publication Critical patent/EP3749542A1/fr
Withdrawn legal-status Critical Current

Links

Classifications

    • 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
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
    • B60L53/00—Methods of charging batteries, specially adapted for electric vehicles; Charging stations or on-board charging equipment therefor; Exchange of energy storage elements in electric vehicles
    • B60L53/10—Methods of charging batteries, specially adapted for electric vehicles; Charging stations or on-board charging equipment therefor; Exchange of energy storage elements in electric vehicles characterised by the energy transfer between the charging station and the vehicle
    • B60L53/12—Inductive energy transfer
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
    • B60L53/00—Methods of charging batteries, specially adapted for electric vehicles; Charging stations or on-board charging equipment therefor; Exchange of energy storage elements in electric vehicles
    • B60L53/10—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
    • B60L53/124—Detection or removal of foreign bodies
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
    • B60L53/00—Methods of charging batteries, specially adapted for electric vehicles; Charging stations or on-board charging equipment therefor; Exchange of energy storage elements in electric vehicles
    • B60L53/30—Constructional details of charging stations
    • B60L53/35—Means for automatic or assisted adjustment of the relative position of charging devices and vehicles
    • B60L53/38—Means for automatic or assisted adjustment of the relative position of charging devices and vehicles specially adapted for charging by inductive energy transfer
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J50/00—Circuit arrangements or systems for wireless supply or distribution of electric power
    • H02J50/10—Circuit arrangements or systems for wireless supply or distribution of electric power using inductive coupling
    • 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
    • H02J50/60—Circuit arrangements or systems for wireless supply or distribution of electric power responsive to the presence of foreign objects, e.g. detection of living beings
    • 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
    • H02J2310/10—The network having a local or delimited stationary reach
    • H02J2310/20—The network being internal to a load
    • H02J2310/22—The load being a portable electronic device
    • 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
    • H02J7/0042—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries characterised by the mechanical construction
    • 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 charging device for a vehicle and to a method for monitoring an inductive charging device for a vehicle, wherein a metal object detection is performed in each case.
  • Electric vehicles and hybrid vehicles usually have an electrical energy storage, such as a traction battery, which provides electrical energy for driving the vehicle. Is this electrical energy storage completely or partially discharged, so must
  • Electric vehicle control a charging station where the energy storage device can be recharged. Even in hybrid vehicles, it may be advantageous to the electrical energy storage by means of electric current
  • Electric vehicle is connected by a cable connection to the charging station.
  • This connection must be made manually by a user mechanically.
  • the charging station and the electric vehicle have a mutually corresponding connection system, in other words that plug and socket of charging station and electric vehicle can be plugged into each other.
  • some wireless charging systems for electric vehicles are known.
  • an electric vehicle on a transmission coil which is also called primary coil, be turned off.
  • the area in which the electric vehicle must be driven for this purpose is also referred to as a charging pad, inductive charging station, or charging device and the like.
  • the primary coil is supplied with an alternating current and then emits a high-frequency alternating magnetic field. This alternating magnetic field generates a corresponding alternating current in a receiving coil, which also
  • the electrical energy store for example the traction battery, of the electric vehicle can thus be charged by means of the induced electric current.
  • Such a system for inductively charging a vehicle battery is described for example in DE 10 2011 010 049 Al.
  • an electric vehicle typically the transmitting coil is either embedded in a street floor or in a parking lot, or designed as a laid-on pallet or charging pad and is connected by means of suitable electronics to a power grid.
  • the power grid may be an island power grid or the public power grid.
  • the receiving coil or secondary coil, is typically fixedly mounted in the underbody of the electric vehicle and in turn connected by means of suitable electronics with the electrical energy storage of the vehicle.
  • Transmission path is limited, results in a typical frequency range of 30 to 150 kHz.
  • Air gaps in the size of 3 to 30 cm are very common, if not by measures such as lowering the
  • Alternating fields are suitable for inducing electrical eddy currents in any metallic or electrically conductive objects which are located in the air gap.
  • OhnrTsche losses heat up these so-called foreign objects.
  • the heating of the foreign objects is undesirable because it leads in particular to unnecessary losses of energy transfer. Therefore, it is desired to heat such foreign objects in inductive charging of a
  • Electric vehicles either by limiting the magnetic field to limit or detect any objects located in the air gap by suitable means and then disable the energy transfer until these objects are removed, or at least until their influence is below a predetermined threshold.
  • metal object detection wherein the term metal objects are intended to include any foreign objects in which alternating magnetic fields induce electrical eddy currents are based on conventional metal detectors.
  • the core element of such metal detectors is usually a number of sensor coils, for example an array, that is an ordered array, of sensor coils.
  • sensor coils for example an array, that is an ordered array, of sensor coils.
  • the sensor coil array is excited, that is, at least partially energized with an alternating current. Thereupon, measurements of changes in a received signal (for example in one of the coils of the sensor coil array) and / or a change in the electrical properties of the sensor coil array in the presence of a metal object are detected and evaluated.
  • a received signal for example in one of the coils of the sensor coil array
  • a change in the electrical properties of the sensor coil array in the presence of a metal object are detected and evaluated.
  • active MOD processes are usually performed either while short-circuiting the power transmission, that is, the main panel, is performed, or complicated sensor coil designs must be used.
  • Characteristics of the sensor coils such as impedance, quality,
  • the method does not provide active excitation of the sensor coil array but passively monitors the magnetic field during energy transfer from the primary coil to the secondary coil by observing and evaluating induced electrical currents, or voltages, in the sensor coils of the sensor coil array.
  • the present invention discloses an inductive charging device having the features of patent claim 1 and a method having the features of patent claim 7.
  • an inductive charging apparatus for a vehicle comprising: a transmitting coil structure for inductively charging a battery of a vehicle by generating an electromagnetic field for inducing a charging current in a receiving coil structure of the vehicle;
  • Power supply means for energizing the transmitting coil structure; a sensor coil structure having a number of sensor coils; one
  • Control means adapted to place the inductive charging device in a passive detection mode while inductive charging takes place and to place the inductive charging device in an active detection mode when no inductive charging is currently taking place; a passive evaluation, which is designed to be in the passive
  • Detection mode to evaluate a current induced in the sensor coil structure and to be used for a passive metal object detection, MOD, in the region of the transmitting coil structure; and an active sensor electronics, which is designed in the active detection mode, a magnetic
  • Sensor field for an active MOD in the region of the transmitting coil structure to produce by at least partially energizing the sensor coil structure.
  • Under the energy transfer is in particular the generation of an alternating magnetic field by the transmitting coil, or primary coil, for inducing a charging current in the secondary coil to understand.
  • a method of monitoring a vehicle inductive charging apparatus comprising the steps of: performing passive metal object detection, MOD, while inductively charging a battery of a vehicle by generating an electromagnetic field to induce a charging current in a receiver coil structure of the vehicle; and
  • One idea underlying the present invention is to use known methods for MOD in combination. In this way, the weak points of both methods can be bypassed or compensated. Thus, both with deactivated (deactivated) and switched on
  • Charging station is thus particularly safe and not susceptible to foreign objects in the area.
  • Energy transfer can be detected, namely by the active MOD method. This is particularly advantageous since large magnetic field strengths can occur between the energy transmission coils during the energy transmission and thus even very short times of the energy transmission can lead to a strong heating of foreign objects, in particular metallic objects.
  • a map determination in the dimensions x, y and z (three-dimensional offset situation of the two energy transmission coils) can be omitted before delivery of the inductive charging device, which significantly simplify an evaluation of the passive MOD method and the complexity of the maps around the three unknown variables x, y and z can reduce.
  • the dependency remains on the energy transfer coil currents II and 12, which are generally measured in any case to regulate the energy transfer.
  • the extra effort for providing the Loading device according to the invention or the method relatively low.
  • the map recording can optionally be completely eliminated, since at the beginning of an operation, the charging device can be calibrated to the foreign object-free state.
  • a transition from a MOD method to the other MOD method that is, in the transition from the passive MOD method to the active MOD method, or vice versa, each time the power transmission is turned on or the power is turned off
  • Metal object detection MOD is enabled.
  • control device is designed to use a result of the MOD in the passive detection mode for calibration or adaptation of the active sensor electronics.
  • a particularly precise active MOD can be performed.
  • control device is designed to use a result of the MOD in the active detection mode for a calibration or adaptation of the passive evaluation electronics.
  • the active sensor electronics is designed to at least one electrical property of at least one Detecting the sensor coil of the sensor coil structure and perform the MOD using the at least one detected electrical property.
  • the active sensor electronics is designed to at least one electrical property of at least one sensor coil energized for generating the magnetic sensor field
  • the active sensor electronics is designed to detect at least one electrical characteristic of at least one sensor coil of the sensor coil structure which is not energized during the generation of the magnetic sensor field and to perform the MOD using the at least one detected electrical property.
  • the method according to the invention comprises an adaptation or calibration of the active MOD using results of the passive MOD.
  • this includes
  • inventive methods include adjusting or calibrating the passive MOD using results of the active MOD.
  • Fig. 1 shows schematically an electric vehicle and an inductive charging device according to an embodiment of the present invention
  • FIG. 2 is a schematic flowchart for explaining a method according to another embodiment of the present invention.
  • the numbering of method steps is for the sake of clarity and, in particular, should not, unless otherwise indicated, imply a particular chronological order. In particular, several can
  • an electric vehicle 1 is shown schematically, which is a
  • Charging coil 2 has, which can also be marked as a secondary coil.
  • the vehicle 1 further comprises a charging electronics 3, which is arranged and arranged to use a charging current 12 induced in the secondary coil 2 for charging an electrical energy store 4, for example a battery of the electric vehicle 1.
  • Fig. 1 is also an inductive charging device 10 according to a
  • Charging device 10 has a transmitting coil 12, which by means of a
  • Electricity supply device 13 with an electrical transmission current II which is in particular a high-frequency alternating current, can be supplied with current.
  • Transmitting coil 12 is preferably embedded in a street floor or parking lot floor or arranged in a pallet or a charging pad, which is placed or placed on a street floor or parking lot floor.
  • a sensor coil structure i. a number of sensor coils 22-1, 22-2, 22-3, 22-4 are arranged, which are collectively referred to as 22-i hereinafter.
  • a divisible by four number of sensor coils 22-i has been found to be advantageous for a spatial resolution of the MOD, so preferably a number of
  • Sensor coils 22-i is provided, which represents a whole multiple of four. However, it is understood that other numbers of sensor coils 22-i may be used, for example, even numbers of Sensor coils 22-i such as two or six sensor coils 22-i or any other number of sensor coils 22-i, for example, even a single sensor coil 22-i.
  • the sensor coil structure i. the number of sensor coils 22-i, advantageously connected to a multiplexer 14, which is designed and configured to time multiplex reception signals (ie in particular in the sensor coils 22 -i induced electrical currents 13) of the sensor coils 22-i and, for example, in one single sensor coil sensor signal to provide for evaluation.
  • a multiplexer 14 may also be provided a plurality of individual lines, each of which is a single sensor coil sensor signal of a single sensor coil to
  • individual subsets of sensor coils 22-i may each have their own multiplexer, so that a total of two or more sensor coil sensor signals may be provided by the multiplexers, but e.g. less sensor coil sensor signals than if each sensor coil 22- i would transmit its own sensor coil sensor signal.
  • Embodiment according to the variants described above is readily adaptable.
  • the sensor coil sensor signal may, in particular, be a respective electrical alternating current 13 induced in a sensor coil 22-i or a signal based thereon.
  • the sensor coil sensor signal (or, in the variants described above, the multiple sensor coil sensor signals) are also used for the passive MOD method, since the induced AC electrical current 13 in the presence of a
  • Reception coil 2 can change in an evaluable manner.
  • at least one electrical property of at least one sensor coil 22-i can be determined and evaluated, in particular the respective electrical property of all sensor coils 22-i.
  • the at least one electrical property may be at least one of the following electrical quantities: impedance, quality, series resistance, inductance.
  • a passive evaluation electronics 16 of the inductive charging device 10 is designed and set up, which from the multiplexer 14 (or according to one of the variants described above, directly from the sensor coils 22-i)
  • the passive evaluation electronics 16 can for this purpose have signal inputs at which the passive evaluation electronics 16 can receive further parameters (or signals indicating such parameters), for example a signal indicative of the charging current 12, a signal indicative of the transmission current II and / or the like.
  • the signal indicative of the charge current 12 may, for example, be provided by a wireless communication device of the
  • Electric vehicle 1 to a wireless communication device of
  • the passive evaluation electronics 16 is designed and configured to carry out the passive MOD method in a manner known in the art, for example, as explained in more detail below with reference to FIG. 2.
  • the inductive charging device 10 further comprises an active sensor electronics 18 for performing an active MOD method, for example, as explained in more detail below with reference to FIG. 2. Furthermore, the inductive charging device 10 comprises a control device 20, by means of which the passive evaluation electronics 16 and the active sensor electronics 18 are at least controllable so that the active MOD method is always and only then performed, if currently no energy transfer from the transmitting coil 12 to the receiving coil 2 takes place (energy transfer disabled), and that the passive MOD method is always and then performed only when currently the energy transfer between the transmitting coil 12 and the
  • Reception coil 2 takes place (energy transfer activated).
  • control device 20 can have further functions.
  • control device 20 may be configured and configured to perform an optional calibration of the passive evaluation electronics 16 and / or the active sensor electronics 18, as will be described in more detail below with reference to FIG. 2.
  • control device 20 may be configured and configured to use an output signal of the passive evaluation electronics 16 to provide reference values for the active MOD method for the active sensor electronics 18 and / or to evaluate an output signal of the active sensor electronics 18 in order to obtain reference values for the passive MOD method for the passive evaluation electronics 16.
  • results or output signals of the passive evaluation electronics 16 can be adjusted or calibrated, and / or the passive evaluation electronics 16 can be evaluated using results or
  • Output signals of the active sensor electronics 18 can be adjusted or calibrated.
  • FIG. 2 describes a schematic flowchart for explaining a method according to another embodiment of the present invention.
  • the method according to the further embodiment can be carried out in particular using, or by means of, the inductive charging device according to the invention.
  • the inductive charging device according to the invention can be designed and configured to carry out the method according to the invention. Accordingly, the method according to all described with respect to the loading device developments and modifications can be adjusted and vice versa.
  • a step S10 the process is started. This can for example be a parking or positioning of an electric vehicle 1 in an inductive
  • a charging position is a position in which the inductive charging device 10 is capable of inductively charging the electric vehicle 1. Even more particularly, a loading position can be understood as the optimum position which the electric vehicle 1 can assume for charging it by the inductive charging device 10. It is assumed that at the beginning of the
  • Step S10 may also include detecting that an electric vehicle 1 is in the charging position, or receiving a charging request signal through the inductive charging device 10, such as to a user input, a coin slot, or the like.
  • a metal-object-free state exists, i. whether the active MOD method had a positive or a negative result, ie whether it was determined by the active MOD method that in the range of
  • Transmitting coil structure 12 in particular between the transmitting coil structure 12 and the receiving coil structure 2, currently a metal object or not.
  • Metal object is detected (symbolized in Fig. 2 by a circled plus sign) is determined and controlled in a step S40, for example by the control device 20 that no energy transfer is performed. It may be provided that in this case a warning signal is output to the electric vehicle 1 and / or to a user of the electric vehicle 1, for example to a mobile terminal of the user. Thus the presence of a metal object at the beginning of energy transfer is excluded by the active MOD method.
  • step S50 for example by the control device 20, that the inductive energy transmission is started.
  • One or more output signals and / or results of the active sensor electronics 18 may be, e.g. are stored and / or evaluated by the control device 20 in a step S60 in order to generate reference values for a passive MOD method, or to adapt previously predefined or previously determined reference values for the passive MOD method.
  • the control device 20 for example, a model, or a map, be deposited, by means of which based on the properties of
  • Output signal (or the plurality of output signals) of the active sensor electronics 18 corresponding reference values for the passive MOD method, or necessary adjustments to the existing reference values, can be determined.
  • the active MOD process is switched to the passive MOD process, i. the execution of the active MOD method is discontinued and the execution of the passive MOD method is started.
  • the passive MOD process is preferably carried out continuously or regularly while the energy transfer is taking place so that it can be determined whether a metal object has in the meantime moved into the magnetic field region of the
  • the passive MOD method is preferably performed using the reference values generated and / or adjusted in step S60, i. using the
  • a step S80 it is checked, for example by the control device 20, whether the passive MOD method had a positive or a negative result, ie whether it was determined by the passive MOD method that in the area of the transmitting coil structure 12, in particular between the transmitting coil structure 12 and the receiving coil structure 2, currently a metal object or not.
  • Electric vehicle 1 and / or is output to a user of the electric vehicle 1, for example, to a mobile terminal of the user.
  • a user of the electric vehicle 1 for example, to a mobile terminal of the user.
  • step S100 it is determined and controlled, for example by the control device 20, that the inductive energy transfer continues until a termination condition exists, for example until an abort signal is issued, eg because a user wants to end the inductive charging or because not enough credit is available to pay for the inductive charging, or because the electric vehicle 1 and its energy storage 4 has been fully charged.
  • a termination condition exists, for example until an abort signal is issued, eg because a user wants to end the inductive charging or because not enough credit is available to pay for the inductive charging, or because the electric vehicle 1 and its energy storage 4 has been fully charged.
  • the inductive charging is interrupted even if the presence of a metal object has been detected in step S80 (step S90).
  • One or more output signals and / or results of the passive evaluation electronics 16 may, e.g. are stored and / or evaluated by the control device 20 in a step S110 in order to generate reference values for the active MOD method, or to adapt previously predefined or previously determined reference values for the active MOD method.
  • the control device 20 for example, a model, or a map, be deposited, by means of which based on the properties of
  • Output signal (or the plurality of output signals) of the passive evaluation electronics 16 corresponding reference values for the active MOD Procedure or necessary adjustments to the existing reference values.
  • a step S120 it is then possible to switch back to the active MOD method, for example by the control device 20.
  • the active MOD method may preferably be carried out based on the reference values generated and / or adjusted in step S110, i. calibrated based on it.
  • Step S120 i. performing the active MOD method may seamlessly proceed to step S20.
  • the active MOD method may be e.g. are terminated after a predefined period of time, and then the process again wait for the beginning of step S10. In this way, an inductive charging device 10 in any condition (i.e.

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

Abstract

La présente invention concerne un dispositif de charge inductive pour un véhicule ainsi qu'un procédé de surveillance d'un dispositif de charge inductive pour un véhicule au cours duquel est effectuée à chaque fois une détection d'objet métallique. Le procédé comprend les étapes suivantes : l'exécution d'une détection d'objet métallique, MOD, passive pendant qu'a lieu une charge inductive d'une batterie d'un véhicule (1) par la génération d'un champ électromagnétique pour induire un courant de charge (I2) dans une structure à bobines de réception (2) du véhicule (1) ; et l'exécution d'une MOD active à des instants auxquels n'a pas lieu une charge inductive.
EP19702432.6A 2018-02-06 2019-01-30 Dispositif de charge inductive et procédé de surveillance d'un dispositif de charge inductive Withdrawn EP3749542A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102018201824.3A DE102018201824A1 (de) 2018-02-06 2018-02-06 Induktive Ladevorrichtung und Verfahren zum Überwachen einer induktiven Ladevorrichtung
PCT/EP2019/052208 WO2019154684A1 (fr) 2018-02-06 2019-01-30 Dispositif de charge inductive et procédé de surveillance d'un dispositif de charge inductive

Publications (1)

Publication Number Publication Date
EP3749542A1 true EP3749542A1 (fr) 2020-12-16

Family

ID=65243582

Family Applications (1)

Application Number Title Priority Date Filing Date
EP19702432.6A Withdrawn EP3749542A1 (fr) 2018-02-06 2019-01-30 Dispositif de charge inductive et procédé de surveillance d'un dispositif de charge inductive

Country Status (5)

Country Link
US (1) US11342794B2 (fr)
EP (1) EP3749542A1 (fr)
CN (1) CN111655533B (fr)
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WO2019154684A1 (fr) 2019-08-15
US20210257857A1 (en) 2021-08-19
US11342794B2 (en) 2022-05-24
CN111655533B (zh) 2023-12-01
DE102018201824A1 (de) 2019-08-08

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