Wireless Charging Mount Layout for Thick Protective Cases
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Solution Overview
Problem
Wireless charging systems face inefficiencies due to the increased distance between coils caused by thick protective cases, which hinder effective electromagnetic induction between the charging module and the portable device.
Innovation Solution
A charging system with a charging mount and module configuration that minimizes the distance between the coils by using a coil receiver and snap fit connections to securely engage the charging module with the protective case, allowing efficient electromagnetic induction for wireless charging.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If thick protective cases are used to protect the portable device, then protection from impacts is improved, but the distance between the coils increases preventing effective wireless charging
Solution Approach 1:
The protective case is segmented into two functional zones: a thicker peripheral region for impact protection and a thinner central region at the coil location to maintain electromagnetic coupling. This segmentation allows the case to provide comprehensive protection while preserving wireless charging functionality.
Solution Approach 2:
The protective case exhibits varying thickness locally: thicker at the edges and corners for impact resistance, and thinner at the coil area to minimize distance between coils. This local quality variation resolves the contradiction between protection and charging efficiency.
2Strength
If the coil is positioned deeper within the charging module for protection, then protection is improved, but the distance to the device coil increases reducing charging efficiency
Solution Approach 1:
The coil is nested within a recessed cavity in the charging module housing, positioned as deep as possible while maintaining the required distance to the device coil. This nesting provides protection while preserving charging efficiency.
Solution Approach 2:
Instead of positioning the coil deeper in the vertical dimension (which would increase distance), the coil is positioned laterally within a recessed cavity, utilizing horizontal space to achieve protection without compromising the vertical distance critical for electromagnetic coupling.
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 charging of portable devices encased in protective cases by reducing the distance between the coils to less than 6mm, ensuring effective interaction and efficient charging operations.
Implementation Method 1
Wireless charging systems use an electromagnetic field to transfer energy between two objects through induction
Data Source
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AI summary
Embodiments of a charging system to be coupled with a protective cover and/or portable device for wireless charging are disclosed. The charging system includes a charging mount defining a rear surface and a front surface. The rear surface and the front surface of the mount body define a first thickness. The charging mount is configured to be coupled with a portable device having a device coil such that the front surface of the charging mount is adjacent to the portable device. The mount body corresponding with a coil receiver defines a second thickness which is less than the first thickness. A charging module is removably coupled with the rear surface of the charging mount and positioned within the module receiver. The charging module includes a coil operable to interact with the device coil to wirelessly charge the portable device. The coil is positioned within the coil receiver.