Shielding Member Placement for Overlapping Wireless Charging and NFC Coils
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Solution Overview
Problem
In terminal devices with overlapping wireless charging and NFC coils, shielding members can interfere with each other's functionality, affecting normal operation.
Innovation Solution
A terminal device design where a shielding member covers the sides of both coils but is located outside their overlapping area, eliminating interference between the coils and reducing the amount of shielding material needed.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Object-affected harmful factors
If shielding members are arranged on both the wireless charging coil and NFC coil, then interference shielding is improved, but mutual interference between overlapping coils occurs
Solution Approach 1:
The shielding member is divided into two separate parts: a first shielding portion for the wireless charging coil and a second shielding portion for the NFC coil. These segmented shielding portions are positioned at different locations to avoid mutual interference while maintaining shielding effectiveness for each coil independently.
Solution Approach 2:
The shielding structure transitions from a planar arrangement to a three-dimensional configuration where shielding members are arranged at different heights and positions. The first shielding portion is positioned above the wireless charging coil while the second shielding portion is positioned below the NFC coil, utilizing vertical space to avoid overlap interference.
2Object-affected harmful factors
If shielding members cover the entire coils, then shielding effectiveness is improved, but the amount of shielding material increases
Solution Approach 1:
Instead of providing uniform shielding across the entire coil area, the shielding members are strategically positioned only at critical locations where interference occurs. The first shielding portion covers the wireless charging coil area while the second shielding portion covers the NFC coil area, providing localized shielding that reduces material usage while maintaining effectiveness.
Solution Approach 2:
The shielding members are designed to cover only the necessary portions of the coils rather than the entire coil structure. This partial coverage approach provides sufficient interference protection for the overlapping regions while significantly reducing the total amount of shielding material required.
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 prevents interference between overlapping coils, ensuring normal operation while minimizing the use of shielding material and costs.
Implementation Method 1
a shielding member, covering the sides, far away from the rear shell, of the first coil and the second coil and located outside an overlapping area between the first coil and the second coil
Data Source
AI summary
The present disclosure provides a terminal device and a protective shell, and belongs to the technical field of communication. The terminal device includes a body, a first coil, a second coil and a shielding member. The body includes a rear shell. The first coil is located in the body. The second coil is located in the body and close to one side of the rear shell, and the second coil at least partially overlaps the first coil. The shielding member covers the sides, far away from the rear shell, of the first coil and the second coil, and is located outside an overlapping portion of the first coil and the second coil, and the first coil is unshielded from the second coil.