Selective Shielding Cover for Wireless Charging Field Transmission
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Solution Overview
Problem
Existing wireless charging devices have limited magnetic field shielding, as the shielding layer primarily protects against electric fields, leaving magnetic fields unaddressed, which can cause electromagnetic interference.
Innovation Solution
An electromagnetic field transceiver device with a selective shielding cover and sealing ring forms a closed cavity that selectively shields electric and magnetic fields, allowing targeted electromagnetic field transmission while preventing interference, using a transceiver unit and driving circuit for efficient energy transfer.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Object-affected harmful factors
If a metal shell is used for electromagnetic shielding to form a closed cavity, then electromagnetic interference is effectively blocked, but the magnetic field transmission required for wireless charging is hindered
Solution Approach 1:
The metal shell is segmented by introducing an electromagnetic field transceiver window that selectively allows magnetic fields to pass through while maintaining shielding of other electromagnetic interference. The shielding structure is divided into shielded regions and non-shielded regions to balance protection and transmission needs.
Solution Approach 2:
Different regions of the shell have different shielding properties. The electromagnetic field transceiver window creates a local non-shielded region for magnetic field transmission, while other areas maintain full shielding. This local differentiation allows the shell to simultaneously provide overall electromagnetic protection and localized magnetic field transmission.
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
The solution enables smooth electromagnetic field transmission while effectively shielding electromagnetic interference, enhancing adaptability and reducing electromagnetic radiation impacts.
Implementation Method 1
a selective shielding cover, provided with an electromagnetic field transceiver window which selectively shields an electric field and/or a magnetic field
Implementation Method 2
a transceiver unit, provided in the cavity and configured to receive or transmit a target electric field and/or the magnetic field
Data Source
AI summary
The present disclosure provides an electromagnetic field transceiver device and a wireless charging device, including: a cover body, a selective shielding cover, a sealing ring and a transceiver unit. The selective shielding cover is provided with an electromagnetic field transceiver window that selectively shields an electric field and/or a magnetic field. The sealing ring sleeves the cover body. The selective shielding cover is seamlessly connected to an opening of the cover body relative to the electric field or the magnetic field through the sealing ring, the selective shielding cover and the cover body form a cavity. The sealing ring is electrically connected to the selective shielding cover, and the sealing ring encloses the electromagnetic field transceiver window. The transceiver unit is provided in the cavity. The transceiver unit is configured to receive or transmit a target electromagnetic field.