WO2020099204A1 - Procédé pour faire fonctionner un système de charge inductif - Google Patents

Procédé pour faire fonctionner un système de charge inductif Download PDF

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Publication number
WO2020099204A1
WO2020099204A1 PCT/EP2019/080361 EP2019080361W WO2020099204A1 WO 2020099204 A1 WO2020099204 A1 WO 2020099204A1 EP 2019080361 W EP2019080361 W EP 2019080361W WO 2020099204 A1 WO2020099204 A1 WO 2020099204A1
Authority
WO
WIPO (PCT)
Prior art keywords
coil
motor vehicle
charging station
magnetic field
induced
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.)
Ceased
Application number
PCT/EP2019/080361
Other languages
German (de)
English (en)
Inventor
Oliver Blum
Philipp Schumann
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 WO2020099204A1 publication Critical patent/WO2020099204A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
    • B60L53/00—Methods of charging batteries, specially adapted for electric vehicles; Charging stations or on-board charging equipment therefor; Exchange of energy storage elements in electric vehicles
    • B60L53/10—Methods of charging batteries, specially adapted for electric vehicles; Charging stations or on-board charging equipment therefor; Exchange of energy storage elements in electric vehicles characterised by the energy transfer between the charging station and the vehicle
    • B60L53/12—Inductive energy transfer
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • 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
    • 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
    • B60L53/36—Means for automatic or assisted adjustment of the relative position of charging devices and vehicles by positioning the vehicle
    • 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
    • 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
    • B60L53/39—Means for automatic or assisted adjustment of the relative position of charging devices and vehicles specially adapted for charging by inductive energy transfer with position-responsive activation of primary coils
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02J—ELECTRIC POWER NETWORKS; CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J50/00—Circuit arrangements or systems for wireless supply or distribution of electric power
    • H02J50/10—Circuit arrangements or systems for wireless supply or distribution of electric power using inductive coupling
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02J—ELECTRIC POWER NETWORKS; 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
    • H02J50/90—Circuit arrangements or systems for wireless supply or distribution of electric power involving detection or optimisation of position, e.g. alignment
    • 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
    • B60L2240/00—Control parameters of input or output; Target parameters
    • B60L2240/60—Navigation input
    • B60L2240/62—Vehicle position
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02J—ELECTRIC POWER NETWORKS; CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J2105/00—Networks for supplying or distributing electric power characterised by their spatial reach or by the load
    • H02J2105/30—Networks for supplying or distributing electric power characterised by their spatial reach or by the load the load networks being external to vehicles, i.e. exchanging power with vehicles
    • H02J2105/33—Networks for supplying or distributing electric power characterised by their spatial reach or by the load the load networks being external to vehicles, i.e. exchanging power with vehicles exchanging power with road vehicles
    • H02J2105/37—Networks for supplying or distributing electric power characterised by their spatial reach or by the load the load networks being external to vehicles, i.e. exchanging power with vehicles exchanging power with road vehicles exchanging power with electric vehicles [EV] or with hybrid electric vehicles [HEV]
    • 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
    • Y02T10/00—Road transport of goods or passengers
    • Y02T10/60—Other road transportation technologies with climate change mitigation effect
    • Y02T10/72—Electric energy management in electromobility
    • 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
    • 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
    • Y02T90/16—Information or communication technologies improving the operation of electric vehicles

Definitions

  • the invention relates to a method for operating an inductive charging system with at least one motor vehicle and at least one charging station, wherein the motor vehicle has at least one motor vehicle coil and the charging station has at least one charging station coil, and wherein the motor vehicle coil and the charging station coil are each designed as a primary coil and / or secondary coil are able to transmit electrical energy without contact, with the steps: a) energizing one of the coils to generate a magnetic field; b) detecting an electrical voltage induced by the magnetic field in the other of the coils; c) determining a position of the motor vehicle relative to the charging station as a function of the induced voltage.
  • the invention further relates to an inductive charging system.
  • a charging station is usually used to supply the motor vehicle with electrical energy by using the charging station
  • the charging station with a charging station coil and the motor vehicle with a motor vehicle coil. It is known that the charging station coil designed as a primary coil or transmitter coil for generating the
  • the magnetic field generated in the motor vehicle coil designed as a secondary coil or receiver coil inducing an electrical voltage and being charged by the induced electrical voltage of the energy store of the motor vehicle.
  • the following steps are also carried out: d) operating the motor vehicle coil as the primary coil for generating the magnetic field, the magnetic field entering the
  • Charging station coil induced electrical voltage is detected for position determination, and / or e) providing the motor vehicle with at least one
  • the charging station coil is operated as a primary coil for generating the magnetic field, and wherein the electrical voltage induced by the magnetic field in the at least one motor vehicle sensor coil is detected for position determination.
  • Carrying out at least one of steps d) or e) results in the advantage that the position of the motor vehicle relative to the charging station is determined particularly efficiently and precisely.
  • the operation of the motor vehicle coil, which is arranged in particular on an underbody of the motor vehicle, as the primary coil according to step d) ensures that in comparison to the operation of the charging station coil as Primary coil a magnetic field with a higher field strength and thus can be generated with a greater range. This ensures a particularly early and reliable determination of the position of the motor vehicle relative to the charging station.
  • a particularly efficient and precise positioning process for positioning the motor vehicle relative to the charging station can be carried out as required.
  • the greater range is brought about solely by the motor vehicle coil, so that further magnetic field-generating elements on the motor vehicle are not necessary.
  • the motor vehicle coil which is arranged in particular on the underbody, can be operated with a higher field strength compared to the charging station coil, because in contrast to the charging station coil which is usually arranged in a publicly accessible road surface, the motor vehicle coil arranged on the underbody is essentially not publicly or directly accessible. As a result, the motor vehicle coil can generate a magnetic field with a higher field strength compared to the charging station coil, without any predetermined ones
  • step e) has the advantage that the at least one motor vehicle sensor coil, in particular several
  • Motor vehicle sensor coils the determination of the position of the motor vehicle relative to the charging station is particularly accurate.
  • a further advantage here is that the motor vehicle coil is not used to determine the position, so that a magnetic field can also be generated by the motor vehicle coil if necessary, in particular to support the determination of the position.
  • Steps d) and e) can preferably be combined.
  • the charging station coil is assigned at least one charging station sensor coil, the electrical voltage induced by the magnetic field in the charging station sensor coil for
  • Position determination is recorded. This has the advantage that the position of the motor vehicle relative to the charging station is determined even more precisely.
  • the magnetic field in at least two coils ie the charging station coil and the at least one
  • Charging station sensor coil a voltage induced. This increases to advantageous amount of data to determine the position of the
  • Position determination is recorded.
  • a voltage is induced here by the magnetic field in at least two coils, that is to say the motor vehicle coil and the at least one motor vehicle sensor coil. This advantageously increases the amount of data for determining the position of the motor vehicle relative to the charging station.
  • the detected induced electrical voltage is compared with a predefinable target induction voltage, the position being determined as a function of a deviation between the induced voltage and the predefinable target induction voltage determined by the comparison.
  • Motor vehicle is determined relative to the charging station.
  • the position of the respective coil generating the magnetic field, in particular the motor vehicle coil and / or the charging station coil, relative to the respective coil into which an electrical voltage is induced by the generated magnetic field is determined particularly precisely.
  • Each of the detected induced voltages is preferably compared with the target induction voltage. It is preferably provided that the predefinable target induction voltage corresponds to a maximum transferable induction voltage.
  • a coupling factor for a respective coil generating or transmitting the magnetic field and a respective coil receiving the magnetic field is calculated for determining the position.
  • the determined position of the motor vehicle is preferably monitored for reaching a target position, and if the determined deviation is smaller than a predeterminable deviation, detection of the reaching of the target position is recognized.
  • the advantage here is that it is recorded particularly precisely whether that Motor vehicle is optimally positioned relative to the charging station. Optimal positioning ensures that a particularly efficient loading or
  • the positioning of the motor vehicle is controlled in the target position of the motor vehicle.
  • the advantage here is that the motor vehicle enters the
  • Target position is brought.
  • the motor vehicle is preferably controlled such that, as a result of the positioning, the motor vehicle coil is positioned or arranged at least substantially directly above the charging station coil.
  • it is provided to transmit a driving recommendation for reaching the target position to a driver of the motor vehicle for positioning the motor vehicle in the target position, for example by displaying the driving recommendation on a screen
  • the frequency of the alternating current for the positioning process being different from the frequency during a charging process, in particular being chosen to be larger.
  • the frequency is preferably reduced as the distance between the primary coil, for example the motor vehicle coil, and the magnetic field
  • receiving coil for example the charging station coil, is reduced.
  • the frequency of the alternating current for the positioning process is preferably equal to the frequency of the charging process when the motor vehicle has reached the target position.
  • a magnetic stray field is reduced by the larger frequency selected.
  • the inductive charging system is characterized in that the motor vehicle coil is designed as a primary coil, the motor vehicle having at least one electrical energy supply device for energizing the motor vehicle coil, and / or that
  • Motor vehicle has at least one motor vehicle sensor coil, and that the charging station coil is designed as a primary coil. This results in particular in the advantages which have already been explained in connection with the method. Further advantages and preferred features result from what has been described above and from the subclaims. It is preferably provided that the motor vehicle coil and the at least one
  • Motor vehicle sensor coil in particular a plurality of motor vehicle sensor coils, are arranged one behind the other and at a distance from one another. “One behind the other” here means that the motor vehicle coil and the at least one
  • Motor vehicle sensor coil in particular several motor vehicle sensor coils, are arranged in a row one behind the other. “Spaced” here means that the motor vehicle coil is at a predeterminable distance from the at least one motor vehicle sensor coil, in particular from each of the respective motor vehicle sensor coils.
  • the charging station coil is preferably assigned at least one charging station sensor coil. This gives the advantages already mentioned.
  • the inductive charging system has a control device which is designed to carry out the method according to one of claims 1 to 7 when used as intended. This results in the advantages that are already associated with the
  • FIG. 1 shows an inductive charging system according to a first exemplary embodiment in a schematic illustration
  • FIG. 2 shows the inductive charging system in a simplified plan view according to a second embodiment and FIG. 3 shows an exemplary flow diagram for carrying out a method for operating the inductive charging system.
  • FIG. 1 shows a simplified schematic illustration of an inductive charging system 1, with at least one motor vehicle 2, in particular an electric motor vehicle, and with at least one charging station 3.
  • the motor vehicle 2 has a drive train, not shown here, with an electrical machine 4 and an energy storage unit 5 connected to the electrical machine 4, which is designed to supply the electrical machine 4 with electrical energy.
  • the energy storage unit 5 is in particular an accumulator or a battery.
  • the motor vehicle 2 has at least one with the
  • Energy storage unit 5 connected motor vehicle coil 6 and the charging station 3 at least one charging station coil 7.
  • the motor vehicle coil 6 and the charging station coil 7 are each designed as primary coils and / or secondary coils to transmit energy without contact.
  • the motor vehicle coil 6 is present on an underbody 8 of the vehicle
  • the charging station coil 7 is arranged in a lane 9 traveled by the motor vehicle 2.
  • the charging station coil 7 is assigned three charging station sensor coils 10, 11, 12.
  • the charging station coil 7 is one or two or more than three
  • Charging station sensor coils 10, 11, 12 assigned.
  • the charging station sensor coils 10, 11, 12 are arranged or can be arranged as desired relative to the charging station coil 7.
  • Charging station sensor coils 10, 11, 12 a charging station sensor unit 13.
  • the charging station coil 7 is connected or can be connected to a power supply unit 14, in particular an external power network.
  • the motor vehicle coil 6 is in the present case designed as a primary coil for generating a magnetic field (not shown in more detail here)
  • Energy storage unit 5 is supplied with electrical energy or energized.
  • a magnetic field with a high field strength is generated, so that a particularly large area below the motor vehicle 2 or a particularly large underbody area is covered or detected by the magnetic field.
  • the field strength is preferably selected or set in such a way that the field strength in areas beyond the underbody 8, in particular in areas of a vehicle body which is accessible to the public or directly, is below a predefinable limit value, in particular the ICNIRP standard.
  • the outer body includes outer body components such as, for example, a motor vehicle door (not shown here) or a front and / or rear bumper.
  • the magnetic field penetrates the charging station coil 7 and each three charging station sensor coils 10, 11, 12.
  • an electrical voltage is induced both in the charging station coil 7 and in the charging station sensor coils 10, 11, 12 and the induced electrical voltage is detected.
  • motor vehicle 2 has a control unit 15, information about the respective induced voltages, in particular individual voltage values, preferably wirelessly, for example by means of radio, being transmitted from charging station 3 to control unit 15 by a suitable transmission unit (not shown here) .
  • control unit 15 controls the motor vehicle 2, in particular a steering device 22 and / or the electrical machine 4, for the independent positioning of the motor vehicle 2 relative to the charging station 3 .
  • the control unit 15 preferably has the position of the
  • Motor vehicle 2 has a computing unit with an algorithm relative to the charging station 3.
  • control device 15 is designed to change or influence the primary magnetic field generated by the motor vehicle coil 6, in particular by a secondary magnetic field generated in the charging station coil 7 and / or the charging station sensor coils 10, 11, 12 as a result of the respective induced voltage to monitor.
  • the control of the Motor vehicle 2 is then preferably based on a detected change in the primary magnetic field.
  • the charging station 3 has the control unit 15, the control unit 15 then preferably being designed to control the motor vehicle 2 in particular wirelessly.
  • control unit 15 is designed to be integrated in power electronics of at least one of the components of the inductive charging system 1.
  • the pulse or the signal for generating the magnetic field is preferably generated by power electronics in the motor vehicle coil 6 or the motor vehicle 2. Additional hardware is required for a purely passive vehicle rectifier. In the present case, however, no additional hardware components are required, especially since the
  • Vehicle power electronics is identical to floor power electronics.
  • the charging station sensor coils 10, 11, 12 are preferably as
  • Metal object sensor coils formed are preferably integrated into the charging station 3 or charging station sensor unit 13 in a matrix application.
  • Motor vehicle 2 optionally additionally has at least one
  • the motor vehicle 2 can preferably be operated autonomously or at least partially autonomously.
  • Figure 2 shows the inductive charging system 1 in a simplified plan view according to a second embodiment.
  • the motor vehicle 2 has a plurality of motor vehicle sensor coils 16-24 in addition to the motor vehicle coil 6.
  • the charging station coil 3 which is not shown here, is designed as a primary coil for generating the magnetic field. Additional charging station sensor coils 10, 11, 12 are only optionally provided in the present case.
  • the motor vehicle sensor coils 16, 17, 18 form a first one
  • Motor vehicle sensor coil group 25 the motor vehicle sensor coils 19, 20, 21, a second motor vehicle sensor coil group 26 and the
  • Motor vehicle sensor coil group 27 The motor vehicle sensor coils 16-24 of a respective motor vehicle sensor coil group 25-27 are each arranged in a row one behind the other and each with a predeterminable distance from one another.
  • the motor vehicle sensor coil groups 25-27 can be arranged as desired.
  • the respective motor vehicle sensor coil groups 25-27 are arranged in a star-shaped arrangement at a predetermined angular distance from one another.
  • the arrangement ensures a particularly precise positioning of the motor vehicle 2 relative to the charging station 3.
  • at least one of the motor vehicle sensor coil groups 25-27 are arranged in a star-shaped arrangement at a predetermined angular distance from one another.
  • the arrangement ensures a particularly precise positioning of the motor vehicle 2 relative to the charging station 3.
  • Motor vehicle sensor coil groups 25 aligned in the direction of a vehicle longitudinal axis of motor vehicle 2.
  • Charging station coil 3 generated magnetic field each an electrical
  • motor vehicle 2 has control unit 15, control unit 15 each of the induced ones
  • Detects voltages determines the position of motor vehicle 2 relative to charging station 3 as a function of the induced voltages, and controls motor vehicle 2 as a function of the determined position, in particular for independent positioning.
  • the evaluation of the induced voltages detected by the motor vehicle sensor coils 16-24 is preferably carried out by evaluating the respective detected voltage intensities or one
  • a respective motor vehicle sensor coil 16-24 is preferably designed or designed with a high mechanical tolerance by means of a simple winding, in particular using film technology. This results in an inexpensive and robust manufacture or implementation of a respective motor vehicle sensor coil 16-24 in a simple way.
  • the motor vehicle sensor coils 16-24 are preferably arranged in a plastic covering of the underbody 8 of the motor vehicle 2. Furthermore, it is preferably provided that the motor vehicle coil 6 is independent of the motor vehicle sensor coil 16-24, so that a magnetic field can be generated by the motor vehicle coil 6 if necessary. Alternatively, an electrical voltage is also induced in the motor vehicle coil 6 and this voltage is detected by the control device 15.
  • motor vehicle sensor coils 16-24 any number of motor vehicle sensor coils 16-24, in particular only one motor vehicle sensor coil 16-24, and any number are optional
  • Motor vehicle sensor coil groups 25-27 in particular only one
  • Motor vehicle sensor coil group 25-27 provided.
  • FIG. 3 shows a flowchart for carrying out an example
  • the method is preferably carried out by the control unit 15.
  • a positioning mode is activated in order to carry out a positioning operation of the motor vehicle 2 relative to the charging station 3.
  • the positioning mode is activated in particular by specifying a driver of the motor vehicle 2, for example by actuating a
  • the activation takes place automatically, for example when a predeterminable, in particular sensor-detected, distance of the motor vehicle 2 from the charging station 3 is reached
  • Activation of the positioning mode simultaneously activates an autonomous driving operation of the motor vehicle 2.
  • a second step S2 the motor vehicle coil 6 is operated as the primary coil for generating the magnetic field as a result of the activation of the positioning process.
  • the motor vehicle coil 6 by the
  • Power supply device 14 energized.
  • the motor vehicle coil 6 is acted upon by an alternating electrical current in order to generate the magnetic field, the frequency of the alternating current being for the
  • Positioning process by frequency during a charging process in particular a predeterminable operating frequency.
  • the frequency of the alternating current for the positioning process is chosen to be greater than the predefinable operating frequency.
  • the frequency of the alternating current for the positioning process is chosen to be greater than the predefinable operating frequency.
  • Charging station coil 3 operated as a primary coil.
  • the charging station coil 3 is energized by the energy supply unit 14.
  • the energy supply unit 14 the energy supply unit 14.
  • Charging station coil 3 for generating the magnetic field is preferably subjected to an electrical alternating current.
  • a third step S3 an electrical voltage is induced in the charging station coil 3 by a magnetic field which is generated by the motor vehicle coil 6.
  • the induced voltage is recorded in particular by the control unit 15 for determining the position. If at least one charging station sensor coil 10, 11, 12 is assigned to the charging station coil 3, the electrical voltage induced by the magnetic field in the respective charging station sensor coil 10, 11, 12 is also detected for determining the position.
  • the charging station coil 3 generates a magnetic field which induces an electrical voltage in the motor vehicle coil 6. If at least one motor vehicle sensor coil 16-24 is assigned to the motor vehicle coil 6, an electrical voltage is also induced in a respective motor vehicle sensor coil 16-24. The respective induced
  • Tensions are recorded in particular by the control device 15.
  • a fourth step S4 to determine the position, the detected induced electrical voltage is compared with a predefinable target induction voltage, the position being determined as a function of a deviation between the induced voltage and the predefinable target induction voltage determined by the comparison.
  • Each of the detected induced voltages is preferably compared with the target induction voltage and the position or distance is determined therefrom. From the individual positions or distances, a distance between the sending coil, for example the motor vehicle coil 6, and the receiving coil, for example the charging station coil 3, is then preferably calculated by lateration.
  • the target induction voltage is preferably stored or stored in the control unit 15.
  • a fifth step S5 the determined position of the motor vehicle 2 is monitored for reaching a target position, and if the determined deviation is smaller than a predeterminable deviation, detection of the reaching of the target position is recognized.
  • the motor vehicle 2 is preferably controlled in such a way that the motor vehicle coil 6 is at least essentially positioned directly above the charging station coil 3 as a result of the positioning.
  • the motor vehicle 2 preferably has at least one sensor unit, for example an ultrasound sensor, radar sensor and / or an optical sensor, which detects the surroundings of the motor vehicle 2.
  • the motor vehicle 2 preferably also has a control unit which monitors the detected surroundings for obstacles during an autonomous positioning and ends the positioning when an obstacle is detected or initiates a bypassing of the obstacle.
  • the position by comparing the detected induced voltage with the target induction voltage, provision is made to determine the position by calculating at least one coupling factor. If the signal or magnetic field generated, in particular a voltage for operating the primary coil generating the magnetic field, and the received signal or magnetic field, in particular a voltage induced in a receiving coil, are known, the signal or magnetic field generated, in particular a voltage for operating the primary coil generating the magnetic field, and the received signal or magnetic field, in particular a voltage induced in a receiving coil, are known, the signal or magnetic field generated, in particular a voltage for operating the primary coil generating the magnetic field, and the received signal or magnetic field, in particular a voltage induced in a receiving coil, are known, the signal or magnetic field generated, in particular a voltage for operating the primary coil generating the magnetic field, and the received signal or magnetic field, in particular a voltage induced in a receiving coil, are known, the signal or magnetic field generated, in particular a voltage for operating the primary coil generating the magnetic field, and the received signal or magnetic field,
  • Coupling factor between the sending and receiving coil can be calculated. Are also the geometries of the respective sending and
  • the distance between the transmitting coil and the receiving coil can be calculated or estimated by means of the coupling factor. If the signal, especially that by the
  • the individual distances are then preferably used to laterate a distance, in particular in the x and y direction, between in particular the Motor vehicle coil 6 and the charging station coil 7 calculated or determined.
  • three or more receiving coils in particular the charging station coil 7 and at least two charging station sensor coils 10, 11, 12, are used.
  • a distance in particular in the x, y and z directions, in particular between the motor vehicle coil 6 and the charging station coil 7 is then calculated or ascertained. This will make the
  • Position determination by the inductive charging system 1 regardless of a vehicle floor clearance or a vehicle load.
  • Components of the inductive charging system 1, which are also used for power transmission, are used in particular for the calculation of the coupling factor.
  • the use of the motor vehicle coil 6 as the primary coil results in the advantage that the range of the positioning signal is increased. Because the motor vehicle coil 6 is not directly accessible, a stronger one
  • Positioning signal can be sent without violating limit values.
  • Predefined limit values in particular the ICNIRP standard, also apply to the motor vehicle coil 6 operated as the primary coil, but only from a silhouette or outer body of the motor vehicle 2. This allows a system range to be increased by at least the dimensions of the motor vehicle 2.
  • Charging station sensor coil 10, 11, 12 has the advantage that, in particular by lateration, an even more precise position determination and / or positioning of motor vehicle 2 can take place.
  • the use of at least one motor vehicle sensor coil 16-24 has the advantage of being even more precise

Landscapes

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

Abstract

L'invention concerne un procédé pour faire fonctionner un système de charge inductif (1), comprenant au moins un véhicule automobile (2) et au moins une station de charge (3), le véhicule automobile (2) présentant au moins une bobine de véhicule automobile (6) et la station de charge (3) au moins une bobine de station de charge (7), et la bobine de véhicule automobile (6) et la bobine de station de charge (7) étant conçues respectivement comme bobine primaire et/ou bobine secondaire pour transmettre sans contact de l'énergie électrique, comprenant les étapes de : a) alimentation d'une des bobines pour la génération d'un champ magnétique, b) détection d'une tension électrique induite par le champ magnétique dans l'autre des bobines, c) détermination d'une position du véhicule automobile (2) par rapport à la station de charge (3) en fonction de la tension induite.
PCT/EP2019/080361 2018-11-14 2019-11-06 Procédé pour faire fonctionner un système de charge inductif Ceased WO2020099204A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102018219403.3 2018-11-14
DE102018219403.3A DE102018219403A1 (de) 2018-11-14 2018-11-14 Verfahren zum Betreiben eines induktiven Ladesystems

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WO2020099204A1 true WO2020099204A1 (fr) 2020-05-22

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WO (1) WO2020099204A1 (fr)

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US11505077B2 (en) * 2020-05-27 2022-11-22 Toyota Motor Engineering & Manufacturing North America, Inc. Systems and methods for wireless vehicle power transfer and misalignment estimation
EP4134263A1 (fr) * 2021-08-12 2023-02-15 EnerSys Delaware Inc. Dispositif de charge et procédé de charge inductive de batteries de véhicule
WO2024038056A1 (fr) * 2022-08-16 2024-02-22 Mahle International Gmbh Système de détection pour un véhicule

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DE102015221585B3 (de) * 2015-11-04 2017-04-06 Continental Automotive Gmbh Verfahren zum Betreiben einer Ladevorrichtung zum induktiven Laden eines elektrischen Energiespeichers eines Kraftfahrzeugs, Ladevorrichtung sowie Anordnung
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