EP4335249A1 - Système de transmission d'énergie par induction - Google Patents

Système de transmission d'énergie par induction

Info

Publication number
EP4335249A1
EP4335249A1 EP22725849.8A EP22725849A EP4335249A1 EP 4335249 A1 EP4335249 A1 EP 4335249A1 EP 22725849 A EP22725849 A EP 22725849A EP 4335249 A1 EP4335249 A1 EP 4335249A1
Authority
EP
European Patent Office
Prior art keywords
unit
induction
transmission system
energy
supply
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.)
Pending
Application number
EP22725849.8A
Other languages
German (de)
English (en)
Inventor
Javier Lasobras Bernad
Sergio Llorente Gil
Jesus Manuel Moya Nogues
Jorge Pascual Aza
Javier SERRANO TRULLEN
Jorge Tesa Betes
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.)
BSH Hausgeraete GmbH
Original Assignee
BSH Hausgeraete 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 BSH Hausgeraete GmbH filed Critical BSH Hausgeraete GmbH
Publication of EP4335249A1 publication Critical patent/EP4335249A1/fr
Pending legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
    • H05B6/00—Heating by electric, magnetic or electromagnetic fields
    • H05B6/02—Induction heating
    • H05B6/06—Control, e.g. of temperature, of power
    • H05B6/062—Control, e.g. of temperature, of power for cooking plates or the like
    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
    • H05B6/00—Heating by electric, magnetic or electromagnetic fields
    • H05B6/02—Induction heating
    • H05B6/10—Induction heating apparatus, other than furnaces, for specific applications
    • H05B6/12—Cooking devices
    • H05B6/1209—Cooking devices induction cooking plates or the like and devices to be used in combination with them
    • H05B6/1236—Cooking devices induction cooking plates or the like and devices to be used in combination with them adapted to induce current in a coil to supply power to a device and electrical heating devices powered in this way
    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
    • H05B6/00—Heating by electric, magnetic or electromagnetic fields
    • H05B6/02—Induction heating
    • H05B6/10—Induction heating apparatus, other than furnaces, for specific applications
    • H05B6/12—Cooking devices
    • H05B6/1209—Cooking devices induction cooking plates or the like and devices to be used in combination with them
    • H05B6/1245—Cooking devices induction cooking plates or the like and devices to be used in combination with them with special coil arrangements
    • H05B6/1272—Cooking devices induction cooking plates or the like and devices to be used in combination with them with special coil arrangements with more than one coil or coil segment per heating zone
    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
    • H05B2213/00—Aspects relating both to resistive heating and to induction heating, covered by H05B3/00 and H05B6/00
    • H05B2213/06—Cook-top or cookware capable of communicating with each other

Definitions

  • the invention relates to an induction energy transmission system according to the preamble of claim 1 and a method for operating an induction energy transmission system according to the preamble of claim 15.
  • US Pat. No. 3,761,668 A proposes an induction hob which, in addition to inductively heating cookware, is also provided for supplying power to small household appliances, such as a mixer. Energy provided inductively by a primary coil of the induction cooktop is partially transferred to a secondary coil integrated into the small household appliance.
  • the object of the invention is in particular, but not limited to, to provide a generic system with improved properties in terms of ease of use.
  • the object is achieved according to the features of the claims Che 1 and 15 solved, while advantageous embodiments and developments of the invention, it can be found in the dependent claims.
  • the invention is based on an induction energy transmission system, in particular an induction cooking system, with a supply unit, which has at least one supply induction element for the inductive provision of energy, with a control unit for controlling the supply unit, and with at least one installation unit, which has at least one receiving induction element for a reception of the inductively provided energy.
  • control unit is provided to receive at least one operating parameter set of the set-up unit and to control the energy provided inductively by the supply unit based on the operating parameter set.
  • Such a configuration can advantageously provide an induction energy transmission system with a particularly high level of operating convenience. Because the energy provided inductively by the supply unit is controlled by the control unit based on the set of operating parameters of the installation unit, a particularly precise and reliable energy supply to the installation unit can advantageously be achieved. In particular, in the case of more complex installation units with several power levels or different switchable electrical loads, a precise power supply can be achieved in every operating state. Current and/or voltage peaks and an oversupply of the installation unit with energy in the event of a change from a first operating state to a second operating state of the installation unit can be prevented particularly advantageously.
  • the induction energy transmission system has at least one main functionality in the form of a wireless energy transmission, in particular in a wireless energy supply of installation units.
  • the induction energy transfer system is designed as an induction cooking system with at least one further main function that deviates from a pure cooking function, in particular at least one energy supply and operation of small household appliances.
  • the induction energy transmission system could be designed as an induction baking oven system and/or as an induction grilling system.
  • the supply unit could be designed as part of an induction oven and/or as part of an induction grill.
  • the induction energy transmission system designed as an induction cooking system is preferably designed as an induction hob system. The supply unit is then designed in particular as part of an induction hob.
  • the induction energy transmission system is designed as a kitchen energy supply system and, in addition to a main function in the form of energy supply and operation of small household appliances, can also be provided for providing cooking functions.
  • a “supply unit” is to be understood as meaning a unit which provides inductive energy in at least one operating state and which in particular has a main functionality in the form of providing energy.
  • the supply unit has at least one supply induction element, which in particular has at least one coil, in particular at least one primary coil, and/or is designed as a coil and which in particular provides inductive energy in the operating state.
  • the supply unit could have at least two, in particular at least three, advantageously at least four, particularly advantageously at least five, preferably at least eight and particularly preferably several supply induction elements, which in the operating state could each provide inductive energy, specifically in particular to a single receiving induction element or to at least two or more pick-up induction elements of at least one erection unit and/or at least one further erection unit. At least some of the supply induction elements could be arranged in a close proximity to one another, for example in a row and/or in the form of a matrix.
  • the supply unit preferably has at least one inverter unit.
  • the inverter unit preferably carries out a frequency conversion and, in particular, converts a low-frequency AC voltage on the input side into a high-frequency AC voltage on the output side.
  • the low-frequency quent AC voltage has a maximum frequency of 100 Hz.
  • the high-frequency AC voltage preferably has a frequency of at least 1000 Hz.
  • the inverter unit is connected to the control unit and can be controlled by the control unit using control signals.
  • the inverter unit is preferably provided for setting the energy provided inductively by the at least one supply inductive element by setting the high-frequency AC voltage.
  • the supply unit preferably comprises at least one rectifier.
  • the inverter unit preferably has at least one inverter switching element.
  • the inverter switching element preferably generates an oscillating electric current, preferably with a frequency of at least 15 kHz, in particular at least 17 kHz and advantageously at least 20 kHz.
  • the inverter unit preferably comprises at least two inverter switching elements, which are preferably in the form of bipolar transistors with an insulated gate electrode, and particularly advantageously at least one damping capacitor.
  • a “installation unit” should be understood to mean a unit which inductively receives energy in at least one operating state and at least partially converts the inductively received energy into at least one other form of energy to provide at least one main function.
  • the energy inductively received by the installation unit in the operating state could be converted, in particular directly, into at least one other form of energy, such as heat.
  • the set-up unit could have at least one electrical consumer, for example an electric motor or the like.
  • the installation unit has at least one receiving inductive element for receiving the inductively provided energy.
  • the installation unit could, for example, have at least two, in particular at least three, advantageously at least four, particularly advantageously at least five, preferably at least eight and particularly preferably several receiving induction elements, which in particular in the operating state could receive energy inductively, in particular from the supply induction element.
  • the set-up unit could, for example, be designed as a cooking utensil.
  • the cooking utensil preferably has at least one food receiving space and in the operating state at least partially converts the inductively received energy into heat for heating food arranged in the food receiving space.
  • the set-up unit designed as a cooking utensil has at least one further unit for providing at least one further function which goes beyond the mere heating of food and/or differs from the heating of food.
  • the additional unit could be designed as a temperature sensor or as a stirring unit or the like.
  • the set-up unit could be designed as a small household appliance.
  • the small household appliance is preferably a location-independent household appliance which has at least the recording induction element and at least one functional unit which, in an operating state, provides at least one household appliance function.
  • “independent of location” is to be understood as meaning that the small household appliance can be positioned freely in a household by a user, and in particular without tools, in particular in contrast to a large household appliance, which is fixed in a specific position in a household and/or installed, such as an oven or refrigerator.
  • the small household appliance is preferably designed as a small kitchen appliance and, in the operating state, provides at least one main function for processing food.
  • the household appliance could be, for example, but not limited to, a food processor and/or a blender and/or a stirrer and/or a grinder and/or a kitchen scale or a kettle or a coffee maker or a Rice cooker or as a milk frother or as a fryer or as a toaster or as a juicer or as a slicer or the like.
  • the pick-up induction element of the installation unit comprises at least one secondary coil and/or is designed as a secondary coil.
  • the receiving inductive element supplies at least one consumer of the positioning unit with electrical energy.
  • the installation unit has an energy store, in particular an accumulator, which is provided to store electrical energy received via the receiving inductive element in a charging state and to make it available in a discharging state to supply the functional unit.
  • the induction energy transmission system preferably has at least one mounting plate for setting up the mounting unit.
  • a “set-up plate” should be understood to mean at least one unit, in particular a plate-like one, which is used for setting up at least one positioning unit and/or for placing at least one item to be cooked is provided.
  • the mounting plate could be designed, for example, as a worktop, in particular as a kitchen worktop, or as a partial area of at least one worktop, in particular at least one kitchen worktop, in particular of the induction energy transmission system. Alternatively or additionally, the mounting plate could be designed as a hob plate.
  • the mounting plate designed as a hob plate could in particular form at least part of an outer hob housing and in particular together with at least one outer housing unit, with which the mounting plate designed as a hob plate could be connected in particular in at least one assembled state, could form at least a large part of the outer hob housing.
  • the mounting plate is preferably made of a non-metallic material.
  • the installation plate could, for example, be made at least to a large extent of glass and/or glass ceramic and/or neolith and/or dekton and/or wood and/or marble and/or stone, in particular natural stone, and/or laminate and/or made of plastic and/or ceramic.
  • position designations such as “below” or “above” refer to a mounted state of the mounting plate, unless this is explicitly described otherwise.
  • the supply unit is preferably arranged below the mounting plate.
  • control unit should be understood to mean an electronic unit that is provided to control and/or regulate at least the supply unit.
  • the control unit preferably includes a computing unit and, in particular, in addition to the computing unit, a memory unit with a control and/or regulating program stored therein, which is intended to be executed by the computing unit.
  • an “operating parameter set” should be understood to mean a plurality of at least two operating parameters of the set-up unit, which the control unit uses to control the energy provided inductively by the supply unit according to a current operating state of the set-up unit.
  • at least one operating parameter of the operating parameter set includes a design and/or geometric parameter of the installation unit, in particular of the receiving induction element.
  • Constructive and/or geometric parameters could, without being limited to this, for example a shape and/or size, in particular a radius and/or diameter ser, and/or a cross-sectional area and/or a number of windings and/or a material and/or a spatial position of the receiving inductive element within the installation unit.
  • At least one operating parameter of the operating parameter set includes an electrical characteristic of the receiving inductive element, for example an amount of an electrical resistance and/or an impedance and/or an inductance and/or a magnetic flux density and/or a resonance frequency and/or a material constant, for example a magnetic permeability.
  • at least one operating parameter of the operating parameter set includes at least one operating parameter of the installation unit, for example a maximum power and/or a minimum power and/or number of power levels and/or a number and/or type of electrical loads that can be operated and/or one required in an operating state voltage and/or current.
  • All of the operating parameters of the operating parameter set could be static, that is to say at least essentially constant over an entire operating period of the set-up unit in which it is inductively supplied with energy by the supply unit.
  • a set-up unit with only one consumer and only one power stage could have an operating parameter set whose operating parameters are all static.
  • At least one operating parameter of the set of operating parameters is preferably a dynamic operating parameter, that is to say in particular one that changes over time.
  • the dynamic operating parameter could include information regarding a change in an operating state of the installation unit, for example a type and/or time of a change in a power level and/or a change in the number and/or type of electrical loads to be operated simultaneously.
  • the dynamic operating parameter could also include information regarding a change in a position of the receiving induction element relative to the supply induction element, for example due to the installation unit being moved on the installation plate by a user.
  • “Provided” is to be understood to mean specially programmed, designed and/or equipped.
  • the fact that an object is provided for a specific function should be understood to mean that the object fulfills and/or executes this specific function in at least one application and/or operating state.
  • the control unit is provided to receive the operating parameter set of the set-up unit at regular intervals. As a result, ease of use can be further improved before geous. Safe and reliable operation of the installation unit can be achieved in a particularly advantageous manner.
  • the control unit is preferably provided to receive the set of operating parameters of the installation unit regularly, in particular periodically, at recurring times. For example, in the operating state, the control unit could receive the operating parameter set of the set-up unit within each period of an AC mains voltage, recurring in time.
  • control unit is provided to automatically adapt the energy provided inductively by the supply unit in the event of a change in at least one operating parameter of the operating parameter set.
  • operating comfort can advantageously be further improved. Damage and/or undesired behavior of the installation unit caused by the change in the operating parameter can advantageously be effectively avoided if the control unit is provided to automatically adapt the energy provided inductively by the supply unit in the event of a change in at least one operating parameter of the operating parameter set.
  • the induction energy transmission system has a communication unit for wireless data transmission, in particular via NFC, between the installation unit and the control unit.
  • a communication unit for wireless data transmission in particular via NFC
  • the communication unit is preferably provided for bidirectional wireless data transmission, ie both for wireless reception and for wireless transmission of data.
  • the communication unit preferably has at least one communication element, which is connected to the control unit and is provided in particular for receiving and sending data wirelessly.
  • the communication unit preferably has at least one further communication element, which is arranged within the set-up unit and is provided in particular for receiving and sending data wirelessly is.
  • the communication unit could be provided for wireless data transmission between the installation unit and the control unit via RFID, or via WIFI, or via Bluetooth, or via ZigBee, or for wireless data transmission according to another suitable standard.
  • the communication unit is preferably provided for wireless data transmission between the set-up unit and the control unit via NFC.
  • the set of operating parameters includes at least one electrical parameter of the receiving induction element.
  • the electrical parameter of the receiving inductive element can be, for example, an amount of an electrical resistance and/or an impedance and/or an inductance and/or a magnetic flux density and/or a resonance frequency and/or a material constant, for example a magnetic permeability the secondary coil and/or a circuit of the installation unit containing the secondary coil.
  • the set of operating parameters includes at least one geometric parameter of the receiving induction element.
  • the geometric parameter can be, for example, a shape and/or size, in particular a radius and/or diameter, and/or a cross-sectional area and/or a number of turns and/or a material and/or a spatial position of the secondary coil act of the recording induction element.
  • the geometric parameter characterizes a diameter of the receiving induction element.
  • operating comfort can advantageously be further improved.
  • a precision in the control of the energy provided inductively by the supply unit can advantageously be achieved by the control unit can be further improved using the set of operating parameters.
  • the fact that the geometric parameter “characterizes” a diameter of the receiving inductive element should be understood to mean that the diameter of the receiving inductive element can be determined at least approximately, preferably precisely, by the control unit from the geometric parameter.
  • the geometric parameter could include the diameter of the recording induction element.
  • the geometric parameter to include information about, for example, a radius, in particular a radius, and/or about a width and depth of the receiving inductive element and/or about a total length and number of windings of an electrical conductor forming the receiving inductive element, from which the diameter of the receiving induction element can be determined at least approximately.
  • the geometric parameter characterizes a distance between the receiving induction element and the supply induction element.
  • Such a configuration can advantageously further improve operating convenience.
  • precision in the control of the energy provided inductively by the supply unit can be advantageously further improved by the control unit using the set of operating parameters.
  • the fact that the geometric parameter "characterizes" a distance between the receiving inductive element and the supply inductive element is to be understood as meaning that the distance between the receiving inductive element and the supply inductive element can be determined at least approximately, preferably precisely, by the control unit from the geometric parameter.
  • the geometric parameter could include the distance between the receiving inductive element and the supply inductive element.
  • the geometric parameter to include information about the distance between the receiving induction element and the underside of the installation unit on which the installation unit is installed in the operating state, in particular on the installation plate, with the distance between the Recording induction element and the supply induction element is at least approximately determined from the indication.
  • control unit is provided to determine a coupling coefficient between the supply induction element and the receiving element. to determine the production element based on the set of operating parameters.
  • operating comfort can advantageously be further improved.
  • precision can advantageously be further improved when controlling the energy provided inductively by the supply unit by the control unit using the set of operating parameters.
  • the coupling coefficient which is sometimes also referred to as the coupling factor in the technical literature, preferably describes the proportion of the magnetic flux generated by the supply inductive element in the operating state, which is connected to the receiving inductive element.
  • the coupling coefficient is dimensionless and can assume values between 0 and 1, with a coupling coefficient of 0 describing a state in which the magnetic flux generated by the supply inductive element in the operating state is not connected to the receiving inductive element and the supply inductive element and the receiving inductive element are magnetically isolated from one another and a coupling coefficient of 1 describes an ideal state in which the magnetic flux generated by the supply inductive element in the operating state is fully connected to the receiving inductive element.
  • a value of the coupling coefficient is dependent not only on the inductances of the supply induction element and the receiving induction element, but also in particular on the distance between the supply induction element and the receiving induction element and the diameters of the supply induction element and the receiving induction element.
  • the control unit is preferably provided to determine the coupling coefficient based on the at least one geometric parameter of the receiving induction element, which is contained in the set of operating parameters, at least approximately, for example by means of an approximation formula stored in the memory unit and applicable by the computing unit.
  • the installation unit has at least two switchable electrical loads.
  • an installation unit with a high degree of flexibility and a large range of functions can advantageously be provided.
  • Under one "Electrical load" of the installation unit is to be understood here as at least one electrical consumer of the installation unit, which is electrically conductively connected to the receiving inductive element and which, in an operating state of the installation unit, in particular to provide at least one function of the installation unit, inductively receives an electrical load from the supply induction element through the receiving induction element received electrical energy at least partially in at least one other form of energy, for example in a thermal energy and / or in a kinetic energy and / or the like, converts.
  • the electrical load can be a resistive load, which could, for example, include at least one heating element of the installation unit to provide a heating function.
  • the electrical load can be an inductive load, which could include, for example, an electric motor for driving a stirring unit of the installation unit.
  • the electrical load alternatively or additionally, is a capacitive load, which could include, for example, a capacitive sensor in the installation unit or a damping capacitor within an electrical circuit of the installation unit.
  • the electrical load can be composed of one or more resistive and/or inductive and/or capacitive partial loads, which preferably interact in the operating state to provide the function of the installation unit.
  • the at least two switchable electrical loads are provided at least for providing a first function of the installation unit in at least two different power levels, for example providing a heating function in at least two different heating levels.
  • the at least two switchable electrical loads are preferably provided to provide at least two different functions of the installation unit, for example a first function in the form of a heating function and a second function in the form of a stirring function.
  • the installation unit preferably has at least one switching element which electrically conductively connects the switchable loads to one another in a closed state. At least one of the electrical loads can be switched on or off by means of the switching element. It is also conceivable that the electrical loads can be operated separately from one another by means of the switching element.
  • a first function could be provided by means of a first electrical load and in a second operating state, a second function could be provided by means of a second electrical load and/or a combination of the first and second electrical loads.
  • the set of operating parameters includes at least one parameter of the electrical loads.
  • the parameter of the electrical loads can be, without being limited to an amount of an electrical resistance and/or an impedance and/or an inductance and/or a capacitance of at least one partial load of the electrical loads. It is also conceivable that the parameter is a power and/or voltage and/or current intensity required in an operating state of at least one of the electrical loads.
  • the set of operating parameters include a switchover point between the electrical loads.
  • operating comfort can advantageously be further improved.
  • a particularly gentle switching between the electrical loads can advantageously be achieved and thus a particularly gentle and trouble-free operation of the installation unit can be made possible.
  • an induction energy transmission system with improved properties with regard to electromagnetic compatibility can advantageously be provided.
  • the control unit is preferably provided to receive the switchover time early from the set-up unit and to adjust the energy provided inductively by the supply unit precisely at the switchover time based on the change in the at least one operating parameter of the operating parameter set.
  • the set-up unit be designed as a small household appliance.
  • an induction energy transmission system with particularly high functionality and flexibility can advantageously be provided.
  • the positioning unit be designed as a cooking utensil.
  • an induction energy transmission system can advantageously be made available with a particularly high level of operating comfort, in particular with regard to precise control of energy provided inductively by the supply unit for heating foodstuffs arranged in the cooking utensil.
  • the invention is also based on a method for operating an inductive energy transmission system, in particular according to one of the configurations described above, with a supply unit, which has at least one supply induction element for the inductive provision of energy, and with at least one installation unit, which has at least one receiving induction element having a reception of the inductively provided energy.
  • At least one operating parameter set of the set-up unit is received and the energy provided inductively by the supply unit is controlled on the basis of the operating parameter set.
  • a particularly convenient, safe and reliable operation of the induction energy transmission system can advantageously be made possible by such a method.
  • the induction energy transmission system should not be limited to the application and embodiment described above.
  • the induction energy transmission system can have a number of individual elements, components and units that differs from a number specified here in order to fulfill a function described herein.
  • Fig. 1 An induction energy transmission system with a supply unit, a control unit, a set-up unit and a further set-up unit in a schematic representation,
  • 2 shows a schematic electrical equivalent circuit diagram for representing an inductive energy transmission between a supply inductive element of the supply unit and a receiving inductive element of the set-up unit
  • 3 shows a schematic electrical circuit diagram of an electrical circuit with the pick-up inductive element and two switchable electrical loads of the installation unit
  • FIG. 4 is a schematic diagram showing an operating parameter set of the installation unit
  • FIG. 6 is a schematic diagram showing a switchover point in time between the electrical loads of the installation unit
  • FIG. 7 shows a schematic diagram showing a method for operating the induction energy transmission system
  • FIG. 1 shows an induction energy transmission system 10a in a schematic representation.
  • the induction energy transmission system 10a has a supply unit 12a.
  • the supply unit 12a has at least one supply induction element 14a for the inductive provision of energy.
  • the supply unit 12a comprises a total of four supply induction elements 14a, with any other number being conceivable.
  • the induction energy transmission system 10a has a control unit 16a for controlling the supply unit 12a.
  • the induction energy transmission system 10a has an installation plate 52a.
  • the induction energy transmission system 10a is presently designed as an induction cooking system and includes an induction hob 54a.
  • the mounting plate 52a is designed as a hob plate 56a.
  • the hob plate 56a is part of the induction hob 54a.
  • the induction energy transmission system 10a has an installation unit 18a.
  • the installation unit 18a has a receiving inductive element 22a for receiving the energy provided inductively by the supply unit 12a.
  • the Installation unit 18a designed as a small household appliance 48a, specifically as a kitchen machine.
  • the induction energy transmission system 10a has a further installation unit 20a.
  • the further installation unit 20a also includes a receiving induction element 22a for receiving the energy provided inductively by the supply unit 12a.
  • the further set-up unit 20a is designed as a further small household appliance 58a, specifically as a kettle.
  • the control unit 16a is provided to receive at least one set of operating parameters 24a (see FIG. 4) of the installation unit 18a and to control the energy provided inductively by the supply unit 12a based on the set of operating parameters 24a.
  • the control unit 16a includes a computing unit 90a with a program (not shown) that can be executed therein for evaluating the set of operating parameters 24a.
  • the inductive energy transmission system 10a has a communication unit 30a.
  • the communication unit 30a is provided for wireless data transmission between the installation unit 18a and the control unit 16a. In the present case, the communication unit 30a is also provided for wireless data transmission between the further installation unit 20a and the control unit 16a.
  • the communication unit 30a has a communication element 60a, which is connected to the control unit 16a and is provided for wireless transmission and reception of data.
  • the communication unit 30a has a further communication element 62a, which is arranged in the set-up unit 18a and is provided for wireless transmission and reception of data.
  • the communication unit 30a also has a further communication element 64a, which is arranged in the further set-up unit 20a and is provided for wireless transmission and reception of data.
  • the communication unit 30a is designed as an NFC communication unit and is intended for wireless data transmission via NFC between the control unit 16a and the installation unit 18a and/or the additional installation unit 20a.
  • control unit 16a receives the operating parameter set 24a (cf. FIG. 4) of the installation unit 18a wirelessly, specifically via the communication unit 30a.
  • the control unit 16a is provided to receive the set of operating parameters 24a at regular intervals.
  • the control unit 16a receives the operating parameter meter set 24a at regular time intervals from the installation unit 18a, wirelessly via the communication unit 30a.
  • FIG. 2 shows a schematic electrical equivalent circuit diagram for representing an inductive energy transmission between the supply inductive element 14a and the receiving inductive element 22a.
  • the supply unit 12a has at least one inverter unit 88a for supplying the supply unit 12a with an alternating current.
  • the control unit 16a controls the energy provided inductively by the supply inductive element 14a by changing the frequency of the alternating current provided by the inverter unit 88a.
  • the supply induction element 14a generates an electromagnetic alternating field, through which the energy is provided inductively.
  • the receiving inductive element 22a is arranged at a distance 36a from the supply inductive element 14a.
  • a magnetic flux of the electromagnetic alternating field which is generated by the supply inductive element 14a, is at least partially coupled to the receiving inductive element 22a, so that an AC voltage is induced in the receiving inductive element 22a and at least part of the inductively provided energy is received.
  • the installation unit 18a has at least one electrical load 40a. In the operating state, the electrical load 40a is supplied with the AC voltage induced in the pickup inductance element 22a.
  • FIG. 3 shows a schematic electrical circuit diagram of the positioning unit 18a.
  • the positioning unit 18a has at least two switchable electrical loads, specifically the electrical load 40a and a further electrical load 42a.
  • the positioning unit 18a has a switching element 72a.
  • the switching element 72a is provided for switching the further electrical load 42a on and off. In a first switching state, the switching element 72a is closed and both the electrical load 40a and the further electrical load 42a are each electrically conductively connected to the receiving inductive element 22a. In a second switching state, the electrical load 40a is electrically conductively connected to the receiving inductive element 22a and the further electrical load 42a is not connected to the receiving inductive element 22a.
  • FIG. 4 shows a schematic diagram for representing the operating parameter set 24a.
  • the set of operating parameters 24a includes an operating parameter 26a and several other operating parameters 28a, 66a, 68a, 70a.
  • the operating parameter set 24a includes at least one electrical parameter 32a of the receiving inductive element 22a of the installation unit 18a.
  • the operating parameter 26a includes the electrical parameter 32a.
  • the electrical parameter 32a includes at least one inductance of the receiving inductive element 22a.
  • the set of operating parameters 24a also includes at least one geometric parameter 34a of the receiving induction element 22a.
  • the geometric parameter 34a characterizes a diameter (not shown) of the receiving induction element 22a.
  • the geometric parameter 34a also characterizes the distance 36a (see FIG. 2) between the receiving inductive element 22a and the supply inductive onselement 14a.
  • the control unit 16a is provided to determine a coupling coefficient 38a between the supply inductive element 14a and the receiving inductive element 22a using the operating parameter set 24a. In the present case, the control unit 16a determines the coupling coefficient 38a from the electrical parameter 32a and the geometric parameter 34a in the operating state. The control unit 16a determines the coupling coefficient 38a by means of an approximation formula in the program of the arithmetic unit 90a. The coupling coefficient 38a describes the proportion of the magnetic flux generated by the supply inductive element 14a in the operating state, which is coupled to the receiving inductive element 22a (cf. FIG. 2).
  • the coupling coefficient 38a is dimensionless and can assume values between 0 and 1. The greater the coupling coefficient 38a, the greater the proportion of the energy provided inductively by the supply inductive element 14a, which can be received by the receiving inductive element 22a in the operating state.
  • the operating parameter 66a includes a current electrical power, which is requested by the installation unit 18a in the operating state.
  • the set of operating parameters 24a includes at least one parameter 44a of the electrical loads 40a, 42a.
  • parameter 44a includes current information regarding the type and amount of an electrical resistance of the current eil to be operated total electrical load, which depending on the switching state of the switching element 72a (see FIG. 3) consists only of the electrical load 40a or of a combination of the electrical load 40a with the additional electrical load 42a.
  • the operating parameter set 24a includes a switchover time 46a between the electrical loads 40a, 42a.
  • the switching point 46a defines a point in time at which the switching element 72a is switched.
  • control unit 16a in the operating state uses operating parameter set 24a to determine a first operating point 80a for controlling the energy provided inductively by supply unit 12a.
  • the control unit 16a is provided to automatically adapt the energy provided inductively by the supply unit 12a.
  • switching the switching element from the first switching state to the second switching state would result in a change in the operating parameter 68a, specifically a change in the characteristic variable 44a with regard to a total load to be operated.
  • the control unit 16a determines a second operating point 86a, based on which the energy provided inductively by the supply unit 12a is to be controlled from the switchover time 46a.
  • FIG. 5 shows two schematic diagrams for representing a power curve 74a of the energy provided inductively by the supply induction element 14a.
  • a power of the energy that can be inductively provided by the supply induction element 14a is plotted in watts on an ordinate 76a of a diagram on the left.
  • a frequency of the alternating current, with which the inverter unit 88a (cf. FIG. 2) can be operated by the control unit 16a, is plotted in kilohertz on an abscissa 78a of the left-hand diagram.
  • the first operating point 80a is entered in the left-hand diagram.
  • the first operating point 80a corresponds to a frequency at which the control unit 16a operates the inverter unit 88a to supply the supply inductive element 14a in the first switching state of the switching element 72a of the installation unit 18a.
  • the power of the energy that can be provided inductively by the supply induction element 14a is plotted in watts on an ordinate 82a of a diagram on the right.
  • the frequency of the alternating current, with which the inverter unit 88a can be operated by the control unit 16a is entered in kilohertz on an abscissa 84a of the right-hand diagram.
  • the first operating point 80a and the second operating point 86a are entered in the diagram on the right.
  • the second operating point corresponds to a frequency with which the control unit 16a operates the inverter unit 88a to supply the supply induction element 14a in the second switching state of the switching element 72a of the installation unit 18a.
  • the power of the energy provided inductively by the supply inductive element 14a at the second operating point 86a corresponding to the lower overall electrical load of the installation unit 18a in the second switching state of the switching element 72a, is lower than the power of the first Operating point 80a inductively provided energy by the supply induction element 14a.
  • FIG. 6 shows a schematic diagram to show the switching time 46a between the switchable electrical loads 40a, 42a of the installation unit 18a.
  • a time in milliseconds is plotted on an abscissa 92a of the diagram.
  • a curve 94a shows a profile of a rectified mains voltage with which the control unit 16a operates the inverter unit 88a (cf. FIG. 2).
  • the control unit 16a is provided to receive the set of operating parameters 24a at regular intervals.
  • the control unit 16a receives the set of operating parameters 24a at regular time intervals from the installation unit 18a, specifically wirelessly via the communication unit 30a (cf. FIG. 1).
  • the control unit 16a receives the operating parameter set 24a chronologically at the beginning of each period of the rectified mains voltage, ie every 20 milliseconds in the case of a mains frequency of 50 Hertz which is usual in Europe.
  • the control unit 16a receives the operating parameter set 24a in the operating state.
  • the control unit 16a automatically adjusts the energy provided inductively by the supply unit 12a, based on the change in the operating parameter 68a (cf. FIG. 4).
  • the control unit 16a operates the supply unit 12a at the first operating point 80a (cf. FIG. 5).
  • the control unit 16a determines the second operating point 96a. From the switching time 46a, the control unit 16a operates the supply unit 12a at the second operating point 86a.
  • FIG. 7 shows a schematic diagram for representing a method for operating the induction energy supply system 10a.
  • the set of operating parameters 24a is received and the energy provided inductively by the supply unit 12a is controlled based on the set of operating parameters 24a.
  • the process comprises two process steps.
  • a first method step 98a the operating parameter set 24a is received, wirelessly by means of the communication unit 30a.
  • the installation unit 18a sends the operating parameter set 24a by means of the further communication element 62a to the communication element 60a, which is connected to the control unit 16a (cf. FIG. 1).
  • the operating parameter set 24a is processed by the control unit 16a, specifically by means of the arithmetic unit 90a, and the control unit 16a then operates the supply unit 12a based on the operating parameter set 24a.
  • FIG. 1 Another exemplary embodiment of the invention is shown in FIG.
  • the following descriptions are essentially limited to the differences between the exemplary embodiments, with regard to components, features and functions that remain the same, reference may be made to the description of the exemplary embodiment in FIGS.
  • the letter a in the reference numerals of the exemplary embodiment in FIGS. 1 to 7 is replaced by the letter b in the reference numerals of the exemplary embodiment in FIG.
  • FIG. 8 shows a further exemplary embodiment of an induction energy transmission system 10b in a schematic representation.
  • the induction energy transmission system 10b has a supply unit 12b.
  • the supply unit 12b has at least one supply induction element 14b for the inductive provision of energy.
  • the supply unit 12b comprises a total of two supply induction elements 14b.
  • the induction energy transmission system 10b has a control unit 16b for controlling the supply unit 12b.
  • the induction energy transmission system 10b has an installation plate 52b.
  • the mounting plate 52b is designed as a kitchen worktop 102b.
  • the induction energy transmission system 10b is presently designed as an induction cooking system and includes an invisible induction hob 54b.
  • the kitchen worktop 102b is part of the invisible induction hob 54b.
  • the induction energy transmission system 10b has an installation unit 18b.
  • the installation unit 18b is designed as a cooking utensil 50b.
  • the cooking utensil 50b is provided for heating foodstuffs (not shown).
  • the cooking utensil 50b also has a further unit 104b for providing at least one further function which goes beyond simply heating food.
  • the further unit 104b is designed as a stirring unit and is provided for stirring food.
  • the positioning unit 18b designed as a cooking utensil 50b has an inductive receiving element 22b for receiving the energy provided inductively by the supply unit 12b.
  • the induction energy transmission system 10b has a further installation unit 20b.
  • the further set-up unit 20b has a receiving inductive element 22b for receiving the energy provided inductively by the supply unit 12b.
  • the other set-up unit 20b is designed as a small household appliance 48b, specifically as a food processor.
  • the control unit 16b is provided to receive at least one set of operating parameters (not shown) of the installation unit 18b and to control the energy provided inductively by the supply unit 12b based on the set of operating parameters.
  • the induction energy transmission system 10b includes a communication unit 30b for wireless data transmission between the control unit 16b and the installation unit 18b and/or the additional installation unit 20b.
  • the communication unit 30b comprises a communication element 60b which is connected to the control unit 16b.
  • the communication unit 16b includes a further communication element 62b, which is arranged in the installation unit 18b, and a further communication element 64b, which is arranged in the further installation unit 20b.
  • the operating parameter set is transmitted wirelessly from the further communication element 62b in the positioning unit 18b to the communication element 60b and thus to the control unit 16b.
  • the control unit 16b includes a computing unit 90b with a program (not shown) that can be executed therein for evaluating the set of operating parameters.
  • a basic functioning of the control of the supply unit 12b based on the operating parameter set of the installation unit 18b by the control unit 16b reference can be made to the above description of the previous exemplary embodiment of FIGS.

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  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Induction Heating Cooking Devices (AREA)

Abstract

L'invention concerne un système de transmission d'énergie par induction (10a ; 10b), en particulier un système de cuisson par induction, comprenant une unité d'alimentation (12a ; 12b) qui comprend au moins un élément d'induction d'alimentation (14a ; 14b) pour fournir de l'énergie par induction, comprenant en outre une unité de commande (16a ; 16b) pour commander l'unité d'alimentation (12a ; 12b), et comprenant au moins une unité positionnée (18a, 20a ; 18b, 20b) qui comprend au moins un élément d'induction absorbant (22a ; 22b) pour recevoir l'énergie fournie par induction. Afin d'améliorer la facilité de fonctionnement, selon l'invention, l'unité de commande (16a ; 16b) est destinée à recevoir au moins un ensemble de paramètres de fonctionnement (24a) pour l'unité positionnée (18a, 20a ; 18b, 20b) et commander, sur la base de l'ensemble de paramètres de fonctionnement (24a), l'énergie fournie par induction par l'unité d'alimentation (12a ; 12b).
EP22725849.8A 2021-05-03 2022-04-27 Système de transmission d'énergie par induction Pending EP4335249A1 (fr)

Applications Claiming Priority (2)

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EP21382394 2021-05-03
PCT/EP2022/061147 WO2022233660A1 (fr) 2021-05-03 2022-04-27 Système de transmission d'énergie par induction

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Publication number Priority date Publication date Assignee Title
WO2023099673A1 (fr) * 2021-12-03 2023-06-08 BSH Hausgeräte GmbH Petit électroménager
WO2024099964A1 (fr) * 2022-11-11 2024-05-16 BSH Hausgeräte GmbH Système de transmission d'énergie par induction
WO2024099972A1 (fr) * 2022-11-11 2024-05-16 BSH Hausgeräte GmbH Système de transmission d'énergie par induction
WO2024115203A1 (fr) * 2022-11-29 2024-06-06 BSH Hausgeräte GmbH Système de transmission d'énergie par induction

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Publication number Priority date Publication date Assignee Title
US3761668A (en) 1972-03-01 1973-09-25 Gen Electric Small electrical apparatus powered by induction cooking appliances
EP0780081B2 (fr) * 1995-12-23 2006-09-27 AEG Hausgeräte GmbH Méthode pour régler automatiquement des emplacements de cuisson chauffants
TR201718728T4 (tr) * 2011-12-30 2018-03-21 Arcelik As İndüksiyon ısıtıcılı ocak iletişim sistemi.
US20150163864A1 (en) * 2012-01-08 2015-06-11 Acess Business Group International LLC Inductive cooking system
WO2013182406A1 (fr) * 2012-06-06 2013-12-12 Arcelik Anonim Sirketi Table de cuisson à chauffage par induction et appareil de cuisine sans fil
WO2014016032A1 (fr) * 2012-07-27 2014-01-30 Arcelik Anonim Sirketi Plan de cuisson à chauffage à induction et appareil de cuisine sans fil
CN107295813A (zh) * 2015-02-02 2017-10-24 三菱电机株式会社 非接触电力传送装置、电气设备以及非接触电力传送系统
WO2018183574A1 (fr) * 2017-03-28 2018-10-04 Inductive Intelligence, Llc Appareils connectés, systèmes et procédés associés
DE102018119965A1 (de) * 2018-08-16 2020-02-20 Miele & Cie. Kg Verfahren zur automatischen Zuordnung mindestens eines Aufstellgeräts zu mindestens einer Kochstelle eines induktiven Kochfelds und System zur Durchführung des Verfahrens
DE102019104011A1 (de) * 2019-02-18 2020-08-20 Miele & Cie. Kg Verfahren zur automatischen Zuordnung eines Aufstellgeräts zu einer Kochstelle eines induktiven Kochfelds, Aufstellgerät und System zur Durchführung des Verfahrens

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