Induction Power Receiver Voltage Cascade for Overload Reduction

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Solution Overview

Problem

Existing induction energy transmission systems face inefficiencies in energy supply, leading to overloading, high electrical losses, and a high probability of failure in the receiving units, particularly in induction cooking systems.

Innovation Solution

Incorporating a voltage converter unit with a voltage cascade and a switching unit to convert and optimize the electrical voltage for the receiving unit, allowing for efficient energy supply and operation within an optimized voltage range, thereby reducing the risk of overloading and improving functionality.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If the receiving induction element directly supplies energy to the further unit without voltage conversion, then the system structure is simple, but the receiving induction element and voltage regulator are prone to overloading and failure

Engineering Contradiction:
Improvereliability of receiving unitVSAvoidstructure of receiving unit
Core Design Contradiction:
ReliabilityVSDevice complexity

Solution Approach 1:

A voltage converter unit is introduced as an intermediary component between the receiving induction element and the further unit. This voltage converter includes a voltage cascade with multiple stages (first voltage cascade stage, second voltage cascade stage) that step-wise converts the induced voltage, preventing direct overload of the receiving induction element and voltage regulator while improving system reliability.

Inventive Principle:
Principle #24Intermediary (Mediator)

2Loss of energy

If the electrical voltage is not converted for the further unit, then the system has fewer components, but electrical losses are high and energy supply is inefficient

Engineering Contradiction:
Improveelectrical lossesVSAvoidcomplexity of voltage supply system
Core Design Contradiction:
Loss of energyVSDevice complexity

Solution Approach 1:

The voltage converter unit changes the voltage parameter through a cascade configuration with multiple stages. The first voltage cascade stage converts the electrical voltage to an intermediate level, and the second voltage cascade stage further converts it to the final operating voltage for the further unit. This multi-stage parameter transformation reduces electrical losses and improves energy supply efficiency.

Inventive Principle:
Principle #35Parameter changes

Applied Scientific Principles

This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.

Function Achieved in This Case

This solution enables optimized energy supply, reduces electrical losses, and minimizes the risk of failure, ensuring reliable and efficient operation of induction cooking systems.

Implementation Method 1

at least one receiving induction element (14; 32; 46) which is provided for receiving an inductively provided energy

Methodology Applied
Scientific EffectElectromagnetic induction: Electromagnetic Induction

Implementation Method 2

the receiving unit (12) has at least one voltage converter unit (16) connected to the receiving induction element (14; 32; 46), which is provided for converting an electrical voltage

Methodology Applied
Scientific EffectVoltage conversion:

Data Source

PatentEP4042833B1Induction power transmission system
Publication Date: 2025.08.06 BSH HAUSGERATE GMBH
  • EP4042833B1 patent drawingFigure 1~2
  • EP4042833B1 patent drawingFigure 3
  • EP4042833B1 patent drawingFigure 4

AI summary

The invention relates to an induction energy transmission system (10a; 10b; 10c), in particular an induction cooking system, comprising at least one receiving unit (12a), which has at least one receiving induction element (14a) for receiving inductively provided energy. The aim of the invention is to provide a system of the type in question having improved properties with regard to supplying energy. This aim is achieved, according to the invention, in that the receiving unit (12a) has at least one voltage converter unit (16a; 16c) connected to the receiving induction element (14a), which voltage converter unit is provided for converting a voltage of the receiving induction element (14a) in order to supply energy to at least one additional unit (18a).