Inductive Power Transfer Safety Control for Household Appliances
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Solution Overview
Problem
Existing household appliance systems with induction hobs lack effective safety measures to prevent unintended and uncontrolled energy transmission, which can lead to damage and safety hazards.
Innovation Solution
Incorporating a safety unit with safety parameters to intermittently prevent energy transmission between induction units, utilizing a safety element to change coupling parameters and employing a safety control unit for wireless communication with the household appliance control unit to enable or block energy transfer based on safety criteria.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Use of energy by moving object
If energy transmission is enabled between induction units without safety parameters, then energy transfer efficiency is improved, but safety hazards and uncontrolled energy transmission occur
Solution Approach 1:
A safety unit is introduced as an intermediary component between the first and second induction units. This safety unit monitors safety parameters (such as temperature, power levels, and operational conditions) and controls the coupling between induction units accordingly. The safety unit acts as a mediator that enables energy transmission only when safety criteria are met, thus maintaining energy efficiency while preventing safety hazards.
Solution Approach 2:
The system implements a feedback mechanism where the safety unit continuously monitors operational parameters and communicates with the household appliance control unit. Based on this feedback, the system dynamically adjusts the coupling between induction units - enabling transmission when conditions are safe and preventing transmission when hazards are detected. This closed-loop control ensures both energy efficiency and safety compliance.
2Reliability
If safety parameters are continuously monitored to prevent uncontrolled energy transmission, then safety is improved, but system complexity increases
Solution Approach 1:
The safety unit is designed to perform multiple functions within a single integrated component: it monitors multiple safety parameters (temperature, power levels, coupling conditions), controls the magnetic coupling between induction units, and communicates with the household appliance control unit. This multi-functionality reduces the need for separate components for each safety function, thereby limiting the increase in system complexity while maintaining comprehensive safety monitoring.
3Reliability
If magnetic coupling between induction units is controlled via safety unit, then uncontrolled energy transmission is prevented, but device complexity increases
Solution Approach 1:
The control functions for magnetic coupling are merged into the existing household appliance control unit through wireless communication with the safety unit. Rather than creating a completely separate control system, the safety unit integrates with the existing control architecture, allowing the household appliance control unit to receive safety parameter information and coordinate its operations accordingly. This merging approach prevents uncontrolled energy transmission while minimizing the increase in device complexity.
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 enhances safety by preventing energy overcurrent and uncontrolled transmission, ensuring compliance with safety standards and user comfort, while maintaining a cost-effective and efficient system.
Implementation Method 1
a first induction unit that is provided so as to inductively supply energy, and having at least one household unit, which has at least a second induction unit that is provided so as to inductively receive the energy that is supplied
Data Source
AI summary
A household appliance system includes a household appliance having a first induction unit configured to inductively supply energy, a household unit having a second induction unit configured to inductively receive the energy that is supplied from the first induction unit, and a safety unit configured to prevent, as a function of a safety parameter, at least in an interval a transmission of energy to the second induction unit.