A cooking utensil for positioning on a cooktop plate to perform a heating operation includes a functional unit and a receiving unit which is configured to receive energy in a contactless manner and to supply energy to the functional unit. The functional unit includes at least one control unit which manages energy supplied by the receiving unit to supply energy to the functional unit in at least one operating state.

An induction heating and wireless power transferring device that includes: a first working coil and a second working coil that are coupled in parallel; a rectification unit configured to rectify alternating current (AC) power to direct current (DC) power; a first inverter unit configured to convert the DC power into resonant current, and apply the converted resonant current to the first working coil or the second working coil; a first switch coupled to the first working coil and configured to turn on or off the first working coil; a second switch coupled to the second working coil and configured to turn on or off the second working coil; and a control unit configured to control the first inverter unit, the first switch, or the second switch to detect whether a target object is located on the first working coil or the second working coil.

An indicator for an induction heating device including a working coil, the indicator that includes: a magnetic flux sensing coil that is configured to (i) sense magnetic flux generated in a state in which the working coil is driven and (ii) convert the sensed magnetic flux into current; a rectifying portion that is configured to rectify current converted by the magnetic flux sensing coil; and a light emitting module that is configured to emit light based on current rectified by the rectifying portion is disclosed.

A method for controlling a cooking hob with one or more induction coils covered by a cookware and forming a cooking zone. All induction coils of the cooking zone are alternately activated. The method includes setting an average power to be transferred to the cookware by a user, determining a frequency, estimating a maximum average power if all induction coils of the cooking zone would be activated with said frequency, estimating a percentage power defined as quotient between the set average power and the estimated maximum average power, estimating a calculated number of coils defined as product of the number of coils within the cooking zone and the percentage power, defining a minimum number of simultaneously activated coils within the cooking zone by an integer value of the calculated number, and defining a temporal activation of a further one of the coils by a fractional part of the calculated number.

To determine the temperature of boiling water in an induction hob including induction heating coils which can be individually driven and which, in a common heating mode, form a cooking point for a cooking vessel containing water, the cooking vessel is positioned over at least two induction heating coils. The induction heating coils are operated in the heating mode to bring the water in the cooking vessel to boil and each induction heating coil heats that region of the cooking vessel base arranged above it. During the heating mode, the oscillation response at each induction heating coil is used to detect whether temperature of the region of the cooking vessel base above this induction heating coil increases. The induction heating coils are operated in the heating mode until one induction heating coil detects that the temperature gradient of the cooking vessel base above the induction heating coil has reached zero.

An induction coil assembly for an induction cooking hob has a coil winding, a lower electrically isolating sheet and optionally a thermally insulating sheet. The induction coil assembly further includes a carrier plate for supporting the lower electrically isolating sheet, the coil winding and the thermally insulating sheet. At least two power cables are provided for each coil winding. The power cables are at least partially arranged at a bottom side of the carrier plate and act as spring elements, so that the induction coil assembly can be pressed or is pressed against a glass ceramic panel of the induction cooking hob.

A method for operating an induction cooking hob comprising a plurality of inductors in association with induction resonant inverters operating in load-dependent frequency ranges comprises a simultaneous activation of inductors, in at least one phase of the control period, independently from their association to one or more overlying cooking utensils but only according to at least partial overlapping of associated operating frequency ranges.

A method for assigning a unique identifier to a hob induction coil of an induction hob including a plurality of hob induction coils, the method including the steps of: placing one or more device induction coils of a device above one or more hob induction coils such that at least one device induction coil and at least one hob induction coil are facing each other; establishing a communication link between the device induction coil and the hob induction coil, wherein information regarding a unique identifier is transmitted to the hob induction coil by the device induction coil; and receiving information regarding the unique identifier by the hob induction coil and storing the identifier associated with the hob induction coil within a memory of the induction hob.

The invention relates to an induction module for powering one or more induction coils (3) of an induction hob (1), the induction module (10) at least comprising: an induction generator (11) for providing electrical power to an induction coil (3); a controller (12) for controlling the induction generator (11); a communication interface (13) for coupling the induction module (10) with a user interface (5); wherein the controller (12) is adapted to operate the induction module (10) at least according to a first and a second configuration mode, wherein in the first configuration mode, the induction module (10) is configured to directly communicate with the user interface (5), and wherein in said second configuration mode, the induction module (10) is adapted to be operated either according to master module or slave module configuration, wherein in master module configuration, the induction module (10) is configured to receive user interface information from the user interface (5) and provide operation information to one or more slave induction modules based on said user interface information and wherein in slave module configuration, the induction module (10) is configured to receive operation information from a master induction module and operate the induction generator (11) according to said operation information.

A coil assembly and an induction heating device including a coil assembly are provided. The coil assembly may include a coil frame having a shape corresponding to a shape of a heating region defined in a plate. A working coil may extend alternately in between opposite first and second directions, rather than being circularly arranged as in related art coil assemblies.