US-20260129722-A1 - INDUCTION ENERGY TRANSMISSION SYSTEM

US20260129722A1US 20260129722 A1US20260129722 A1US 20260129722A1US-20260129722-A1

Abstract

An induction energy transmission system includes a set-down plate, a supply unit including a supply induction element arranged below the set-down plate and designed to inductively provide energy, a set-down unit including a receiving unit with a receiving induction element designed to receive the inductively provided energy, and a control unit designed to control the supply unit by using a parameter set so as to control the supply unit and to receive a parameter of the parameter set from the set-down unit. The control unit receives in addition an information parameter set from the set-down unit to determine a coefficient of a multivariable regression equation and based on the coefficient to determine a correction factor for a parameter of the parameter set or determine a new parameter set.

Inventors

Francisco Villuendas Lopez
Jesus Manuel Moya Nogues
Sergio Llorente Gil
Emilio Plumed Velilla
JORGE TESA BETES
Jorge Pascual Aza

Assignees

BSH Hausgeräte GmbH

Dates

Publication Date: 20260507
Application Date: 20231106
Priority Date: 20221111

Claims (20)

1 - 15 . (canceled)
16 . An induction energy transmission system, in particular an induction cooking system, the induction energy transmission system comprising: a set-down plate; a supply unit comprising a supply induction element arranged below the set-down plate and designed to inductively provide energy; a set-down unit comprising a receiving unit with a receiving induction element designed to receive the inductively provided energy; and a control unit designed to control the supply unit by using a parameter set so as to control the supply unit and to receive a parameter of the parameter set from the set-down unit, said control unit being designed to receive in addition an information parameter set from the set-down unit, to determine a coefficient of a multivariable regression equation and based on the coefficient to determine a correction factor for a parameter of the parameter set or determine a new parameter set.
17 . The induction energy transmission system of claim 16 , wherein the control unit is designed to take into account a horizontal offset between the supply induction element and the receiving induction element when determining the new parameter set.
18 . The induction energy transmission system of claim 16 , wherein the control unit is designed to determine a correction factor for a self-inductance of the supply induction element.
19 . The induction energy transmission system of claim 16 , wherein the control unit is designed to determine a correction factor for a self-inductance of the receiving induction element.
20 . The induction energy transmission system of claim 16 , wherein the control unit is designed to determine a correction factor for a load resistance of the set-down unit.
21 . The induction energy transmission system of claim 16 , wherein the set-down plate is configured as a hob plate.
22 . The induction energy transmission system of claim 16 , wherein the set-down plate is configured as a kitchen worktop.
23 . The induction energy transmission system of claim 16 , wherein the control unit is designed to use a vertical distance between the supply induction element and an upper side of the set-down plate when determining the coefficient of the multivariable regression equation.
24 . The induction energy transmission system of claim 16 , wherein the information parameter set contains a vertical distance between the receiving induction element and an upper side of the set-down plate.
25 . The induction energy transmission system of claim 16 , wherein the information parameter set comprises a geometric information parameter of the receiving induction element.
26 . The induction energy transmission system of claim 16 , wherein the set-down unit comprises a shielding unit and the information parameter set comprises an information parameter relating to the shielding unit.
27 . The induction energy transmission system of claim 16 , wherein the receiving unit comprises a flux-bundling unit and the information parameter set comprises an information parameter relating to the flux-bundling unit.
28 . A set-down unit, in particular a small household appliance, of an induction energy transmission system, the set-down unit designed for placement on a set-down plate of the induction energy transmission system and comprising a receiving unit with a receiving induction element designed to receive an inductively provided energy, the set-down unit designed to provide an information parameter set to a control unit of the induction energy transmission system for determining a coefficient of a multivariable regression equation and based on the coefficient for determining a correction factor for a parameter of the parameter set or determining a new parameter set.
29 . The set-down unit of claim 28 , further comprising a shielding unit to protect against interference from the alternating electromagnetic field.
30 . An induction household appliance, in particular an induction hob, of an induction energy transmission system, the induction household appliance comprising: a supply unit comprising a supply induction element designed to inductively provide energy; and a control unit designed to control the supply unit by using a parameter set so as to control the supply unit and to receive a parameter of the parameter set from a set-down unit of the induction energy transmission system, said control unit being designed to receive in addition an information parameter set from the set-down unit, to determine a coefficient of a multivariable regression equation and based on the coefficient to determine a correction factor for a parameter of the parameter set or determine a new parameter set.
31 . A method for operating the induction energy transmission system of claim 16 , the method comprising: inductively providing energy by the supply induction element of the supply unit; transmitting the inductively provided energy to the receiving induction element of the set-down unit; controlling the supply unit by using a parameter of a parameter set from the set-down unit; the set-down unit additionally providing an information parameter set to determine a coefficient of a multivariable regression equation; and determining a correction factor for a parameter of the parameter set or a new parameter set based on the determined coefficient.
32 . The method of claim 31 , further comprising taking into account a horizontal offset between the supply induction element and the receiving induction element when determining the new parameter set.
33 . The method of claim 31 , further comprising determining a correction factor for a self-inductance of the supply induction element.
34 . The method of claim 31 , further comprising determining a correction factor for a self-inductance of the receiving induction element.

Description

The invention relates to an induction energy transmission system according to the pre-characterizing clause of claim 1 and a method for operating an induction energy transmission system according to the pre-characterizing clause of claim 15. Induction energy transmission systems for the inductive transmission of energy from a primary coil of a supply unit to a secondary coil of a set-down unit are already known from the prior art. By way of example, induction hobs are known which, in addition to inductively heating cooking equipment items, are also designed for the inductive energy supply of small household appliances. Control of the supply unit by a control unit is based on a parameter set, wherein in some known induction energy transmission systems at least one parameter of the parameter set, by way of example a self-inductance of the secondary coil, an energy requirement or a total electrical load, is transmitted wirelessly, by way of example via NFC, from the set-down unit to the control unit. The parameters of the parameter set, in particular parameters relating to the set-down unit, are assumed to be constant in previously known induction energy transmission systems and changes in these parameters occurring during operation are so far not taken into account. This results in disadvantageously long response times during commissioning or when changing loads, low efficiency in inductive energy transmission and the risk of potential damage to components, by way of example due to overvoltages caused by inaccurate parameters, which has reduced the operating convenience for users of previously known induction energy transmission systems. The object of the invention lies in particular in, but is not limited to, providing a system of the generic type with improved properties in terms of operating convenience. The object is achieved in accordance with the invention by the features of claims 1 and 15, while advantageous embodiments and developments of the invention can be found in the subordinate claims. The invention relates to an induction energy transmission system, in particular an induction cooking system, with a set-down plate, with a supply unit that has at least one supply induction element arranged below the set-down plate for the inductive provision of energy, with a control unit for controlling the supply unit, and with at least one set-down unit, which has at least one receiving unit with at least one receiving induction element for receiving the energy provided inductively, wherein the control unit is designed to use a parameter set so as to control the supply unit and to receive at least one parameter of the parameter set from the set-down unit. It is proposed that the control unit is designed to receive in addition an information parameter set from the set-down unit, to use this to determine coefficients of at least one multivariable regression equation and from this to determine at least one correction factor for at least one parameter of the parameter set or determine a new parameter set. An induction energy transmission system with improved properties in terms of operating convenience can be advantageously provided by such an embodiment. In particular, an improved user experience can be made possible by shortening a transient recovery time between the supply induction element and the receiving induction element and by enabling more precise control and faster response to changing conditions, such as a shifting of the set-down unit on the set-down plate, for example. Furthermore, operational reliability can be advantageously improved. In particular, it is possible to reduce, preferably minimize, hazards resulting from damage to electronic components of the induction energy transmission system, by way of example due to overvoltages and/or changes in an electromagnetic coupling between the supply induction element and the receiving induction element. The induction energy transmission system has at least one main functionality in the form of wireless energy transmission, in particular in a wireless energy supply of set-down units. In one advantageous embodiment, the induction energy transmission system is configured as an induction cooking system with at least one further main function that differs from a purely cooking function and is in particular at least supplying energy and operating small household appliances. By way of example, the induction energy transmission system could be configured as an induction oven system and/or as an induction grill system. In particular, the supply unit could be configured as a part of an induction oven and/or as part of an induction grill. The induction energy transmission system configured as an induction cooking system is preferably configured as an induction hob system. The supply unit is then configured in particular as part of an induction hob. In a further advantageous embodiment, the induction energy transmission system is configured as a kitchen energy sup