Rollable Wireless Charging Pad for Compact Multi-Device Charging
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Solution Overview
Problem
Conventional wireless charging technologies result in bulky charging pads that are inconvenient for carrying, as they require multiple power adapters and cables for different devices, and existing solutions do not adequately address the need for a compact, portable wireless charger.
Innovation Solution
A compact wireless charger design featuring a rollable charging pad with a rigid and flexible structure, where the charging pad is wound around a roll shaft with magnetic strips for fixation, and includes a coil connected to a wireless charging power unit, allowing for easy portability and versatility in charging various devices.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a coil is disposed inside a charging pad for wireless charging, then wireless charging capability is achieved, but the charging pad area becomes large and inconvenient to carry
Solution Approach 1:
The charging pad is wound around a roll shaft to form a compact cylindrical structure, nesting the flat pad within a three-dimensional form factor that dramatically reduces its occupied area while preserving the full charging surface when deployed
Solution Approach 2:
The charging pad transitions from a static flat structure to a dynamic rollable structure that can be compacted and expanded as needed, allowing it to adapt between a small portable form and a large functional surface
2Adaptability or versatility
If multiple power adapters and cables are configured for different portable electronic devices, then charging compatibility is improved, but portability deteriorates
Solution Approach 1:
The wireless charging pad provides universal charging capability for multiple types of portable electronic devices through a single device, eliminating the need for multiple specialized power adapters and cables by using electromagnetic induction that works across different device types
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 design provides a compact and portable wireless charging solution that can charge multiple devices using a single charger, enhancing portability and convenience while maintaining efficient wireless charging capabilities.
Implementation Method 1
After being powered on, the coil generates a magnetic field, and a portable electronic device located in the magnetic field and having a wireless charging function is to be charged
Implementation Method 2
the charging pad is wound around a roll shaft with magnetic strips for fixation
Data Source
Figure 1A~1B
Figure 2A~2B
Figure 3~4A
AI summary
This application provides a charging pad used in a wireless charger. The charging pad can be wound. Specifically, the charging pad includes a rigid region and a flexible region, and a structure of the rigid region is different from a structure of the flexible region. A rigid support plate is disposed in the rigid region, and a metal line in the flexible region is in a metal hinge structure or is a bendable metal conducting wire. In addition, this application further provides a wireless charger to which the charging pad is applied.