Rollable Charging Pad Structure for Portable Multi-Device Wireless Charging
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Conventional wireless charging technologies require multiple power adapters and cables for different portable electronic devices, leading to poor portability due to the large size of charging pads, which are inconvenient for carrying.
Innovation Solution
A wireless charger design featuring a roll shaft and a charging pad that can be wound around the shaft, incorporating a planar coil and rigid support plates with flexible and rigid parts, allowing for compact storage and high charging efficiency through overlapping coils and reduced resistance.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If a wireless charger uses a traditional charging pad with a coil disposed inside, then wireless charging function is achieved, but the charging pad has a relatively large area and is inconvenient to carry
Solution Approach 1:
The charging pad is divided into multiple independent coil units (first planar coil, second planar coil, etc.) that can be independently arranged and configured. Each coil unit can be separately controlled and optimized, allowing the overall charging pad to be made more compact while maintaining wireless charging functionality across multiple devices simultaneously
Solution Approach 2:
Multiple coil units are arranged in an overlapping nested configuration where coils are positioned at different heights and orientations. The first planar coil is disposed on a first support plate, the second planar coil on a second support plate, with their projections overlapping. This nested arrangement allows multiple coils to occupy the same spatial footprint, dramatically reducing the overall charging pad area while maintaining charging capability for multiple devices
2Adaptability or versatility
If multiple power adapters and cables are configured for different portable electronic devices, then charging capability for various devices is ensured, but portability deteriorates due to carrying multiple components
Solution Approach 1:
The wireless charging pad is designed with multiple planar coils that can simultaneously charge different types of portable electronic devices (smartphones, tablets, wearables, etc.) without requiring device-specific adapters or cables. The overlapping coil configuration creates multiple charging zones that can accommodate various device sizes and positions, making a single charging pad universally compatible with multiple device types
Solution Approach 2:
Multiple coil units that would traditionally require separate power adapters are merged into a single integrated charging pad. The first planar coil, second planar coil, and additional coils are combined in one device with shared power supply and control circuits, eliminating the need to carry multiple separate charging components while maintaining the ability to charge multiple devices simultaneously
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 compact design enhances portability while maintaining high charging efficiency due to the efficient use of space and optimized magnetic field overlap, allowing for convenient charging of multiple devices with reduced volume.
Implementation Method 1
a coil is disposed inside a charging pad of the wireless charger. After being powered on, the coil generates a magnetic field
Data Source
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.