Inductive Household Appliance Power and Signal Coil Design
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Solution Overview
Problem
Existing power transmission systems for household attachments are not cost-effective and space-efficient, particularly in achieving bidirectional data transmission while providing power through inductive coupling.
Innovation Solution
A system comprising a household attachment and operating device with separate power and signal coils sharing a common coil core, allowing for transformer-based energy transfer and efficient data transmission, where the power coil is connected to a resistance heating conductor and the signal coil is used for data communication, enabling a compact and cost-effective design.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If a combined power and data transmission system is used, then cost and space are reduced, but interference between power and signal coils increases
Solution Approach 1:
The system separates power transmission and data communication functions into distinct coils (power coil and signal coil) that share a common magnetic core. This segmentation allows each coil to be optimized for its specific function while reducing electromagnetic interference between them, as they operate at different frequencies and have dedicated pathways.
Solution Approach 2:
A common magnetic core acts as an intermediary that couples both the power coil and signal coil while maintaining their functional independence. The core provides a shared magnetic pathway that enables efficient energy transfer for both power and data transmission without requiring direct physical contact or overlapping coil structures.
2Reliability
If separate power and signal coils are used, then interference is reduced, but device complexity and space increase
Solution Approach 1:
The power coil and signal coil are merged onto a single common magnetic core structure, allowing them to share the same physical platform and magnetic pathway. This combining approach reduces overall device complexity and space requirements while maintaining the functional separation needed for reliable data transmission and power transfer.
Solution Approach 2:
The common magnetic core serves multiple functions simultaneously: it provides magnetic coupling for power transmission, supports data communication signals, and acts as a structural backbone for both coils. This multi-functionality reduces the need for separate components and simplifies the overall device architecture.
3Use of energy by moving object
If inductive coupling is used for power transmission, then contactless energy transfer is achieved, but data transmission capability is limited
Solution Approach 1:
The system segments the transmission functions by using the power coil exclusively for energy transfer and the signal coil for data communication. This segmentation ensures that power transmission efficiency is optimized through the power coil's inductive coupling while data transmission capabilities are fully realized through the dedicated signal coil.
Solution Approach 2:
The common magnetic core serves as an intermediary that enables both power and data transmission through the same magnetic field pathway. This intermediary structure allows the system to maintain contactless operation for power transfer while simultaneously supporting bidirectional data communication between the household operating device and attachment device.
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 space-saving, cost-effective data transmission and power supply to household attachments, minimizing interference and ensuring reliable operation with low power consumption, suitable for various electric appliances.
Implementation Method 1
a power coil for inductively tapping energy from an electromagnetic excitation field
Implementation Method 2
at least one signal coil for data transmission between the attachment device and operating device
Data Source
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AI summary
A household attachment device or a household operating device can comprise in each case at least one power coil with in each case at least one power winding for inductively tapping energy from an electromagnetic excitation field or for the generation thereof, wherein the respective power winding lies in a power winding plane, and can further comprise in each case at least one signal coil with in each case at least one signal winding, wherein the signal winding lies in a signal winding plane. The power winding plane lies essentially parallel to the signal winding plane.