Method and apparatus for configuring multilayer receiving coils in cordless device using wireless power transmission
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Solution Overview
Problem
Existing wireless power transmission technologies face challenges in commercialization, particularly in achieving efficient power transfer across different frequency domains, and require innovative coil configurations to maximize spatial efficiency in cooking apparatuses while supporting multiple heating levels.
Innovation Solution
The proposed solution involves a cooking apparatus with a wireless power receiving unit that includes multiple receiving coils stacked on different layers, with coils arranged to share or not share centers, and a processor to control the power transmission, allowing for efficient power distribution and communication, thereby reducing the planar area and enhancing spatial efficiency.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If multiple receiving coils are arranged on the same layer to support multiple heating levels, then heating versatility is improved, but planar area increases
Solution Approach 1:
The patent transitions from arranging multiple receiving coils on the same planar layer to stacking them on different layers in the vertical dimension. This dimensional change allows multiple heating zones to be achieved without increasing the planar footprint, thereby resolving the contradiction between heating versatility and planar area occupation.
2Area of stationary object
If receiving coils are stacked on different layers, then spatial efficiency is improved, but coil configuration complexity increases
Solution Approach 1:
The patent employs a nested arrangement where receiving coils are stacked vertically with shared centers, similar to nested dolls. This nesting approach maximizes spatial utilization while maintaining a compact, organized structure that manages configuration complexity through systematic alignment.
Solution Approach 2:
The patent utilizes asymmetric vertical positioning of receiving coils on different layers with shared centers, creating an optimized three-dimensional configuration. This asymmetric arrangement in the vertical dimension allows for improved spatial efficiency while the regularity of shared centers maintains manageable configuration complexity.
3Ease of operation
If wireless power transmission is implemented, then power supply flexibility is improved, but power transmission efficiency decreases
Solution Approach 1:
The patent implements a multi-functional receiving unit that can simultaneously perform wireless power reception, heating operations at multiple levels, and communication functions. This universal design allows the system to achieve power supply flexibility through wireless transmission while minimizing energy losses by integrating multiple functions into a single efficient platform.
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 configuration enables efficient wireless power transmission and heating across multiple levels, reducing the planar area of the cooking apparatus and improving spatial efficiency, allowing for compact manufacturing and versatile heating applications.
Implementation Method 1
A WPT scheme based on the contactless induction coupling method is a scheme to transmit/receive power wirelessly by mutual linkage using a transmitting-side transmitting coil (a magnetic resonator) having a power source and a receiving-side receiving coil receiving power wirelessly
Implementation Method 2
the wireless power receiving unit includes a first receiving coil and a second receiving coil having a shared center with the first receiving coil whereby the second receiving coil shares at least a part of a center of the first receiving coil, the first receiving coil and the second receiving coil being arranged on different layers
Data Source
AI summary
A wireless power-driven cooking apparatus including a receiving coil with a stacked structure. More specifically, the wireless power-driven cooking apparatus may include a wireless power transmitting unit including a transmitting coil to wirelessly transmit power and a wireless power receiving unit configured to wirelessly receive power from the wireless power transmitting unit, in which the wireless power receiving unit includes a first receiving coil and a second receiving coil having a shared center with the first receiving coil whereby the second receiving coil at least partially shares a same center with the first receiving coil, and the first receiving coil and the second receiving coil are arranged at different heights along a direction perpendicular to the shared center.