Wireless Power Receiving Antenna with Embedded Coil and Soft Magnetic Layer
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Solution Overview
Problem
Existing wireless power receiving antennas face inefficiencies due to energy loss caused by an air layer between the receiving coil and the soft magnetic layer, which reduces the guiding effect of the magnetic field and hampers power transceiving efficiency.
Innovation Solution
A receiving antenna design featuring a substrate with a soft magnetic layer and a receiving coil embedded within, utilizing an insulating layer and adhesive layers to eliminate the air layer, and incorporating a support means and polyethylene terephthalate (PET) materials to enhance electromagnetic energy focusing and reduce thickness.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Loss of energy
If a receiving coil is formed on a soft magnetic layer with an air layer between them, then the structure is simple and easy to manufacture, but the guiding effect of the magnetic field is reduced and power transmission efficiency decreases
Solution Approach 1:
The patent merges the receiving coil and soft magnetic layer into a single integrated structure where the receiving coil is formed directly within the soft magnetic layer. This eliminates the air layer between separate components and creates direct magnetic coupling, thereby improving the guiding effect of the magnetic field and power transmission efficiency while maintaining manufacturing simplicity through a unified structure.
Solution Approach 2:
The patent introduces an insulating layer as an intermediary substance within the soft magnetic layer to form the receiving coil. This insulating layer enables the formation of the coil structure while maintaining direct contact with the magnetic material, eliminating air gaps and improving magnetic field guidance without adding significant structural complexity.
2Adaptability or versatility
If the receiving antenna thickness is reduced for slim electronic devices, then adaptability to slim devices is improved, but electromagnetic energy focusing capability may be compromised
Solution Approach 1:
The patent uses composite soft magnetic materials with high permeability and optimized magnetic properties to achieve effective electromagnetic energy focusing within a thin profile. The composite structure allows the antenna to maintain slim thickness while preserving or enhancing magnetic field concentration and power reception efficiency through superior material properties.
Solution Approach 2:
The patent optimizes parameters such as the thickness of the soft magnetic layer, the configuration of the receiving coil, and the magnetic permeability of the materials to achieve effective energy focusing in a reduced thickness. By carefully adjusting these parameters, the antenna maintains high power transmission efficiency while being thin enough for slim electronic devices.
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 design improves electromagnetic energy focusing and power transmission efficiency, making it suitable for slim electronic devices and large applications like electric cars, while reducing the likelihood of electrical shorts and enhancing reliability.
Implementation Method 1
General wireless power transceiving technology uses a principle of magnetic induction or magnetic resonance. For example, when electrical energy is applied to a transmission antenna of a wireless power transmission device, the transmission antenna may convert the electrical energy into electromagnetic energy and emit the electromagnetic energy to the surroundings. And a receiving antenna of a wireless power receiving device may receive the electromagnetic energy emitted from the transmission antenna and convert it to the electrical energy.
Implementation Method 2
a receiving antenna of a wireless power receiving device may receive the electromagnetic energy emitted from the transmission antenna and convert it to the electrical energy
Data Source
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AI summary
A receiving antenna of a wireless power receiving device wirelessly charging electric power according to an embodiment of the present invention includes a substrate, a soft magnetic layer stacked on the substrate, and a receiving coil configured to receive electromagnetic energy emitted from a wireless power transmission device, wound in parallel with a plane of the soft magnetic layer, and formed inside of the soft magnetic layer, and an insulating layer is formed between the soft magnetic layer and the receiving coil.