Universal Wireless Charging Coil Assembly
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Solution Overview
Problem
Conventional wireless power transfer systems require separate charging devices for each frequency standard, leading to increased setup and maintenance costs due to the need for dedicated converters and coils, making it inconvenient and costly to charge devices with different frequency standards.
Innovation Solution
A universal wireless charging device with a transmitting assembly that includes a first coil embedded in a printed circuit board for transmitting a first AC voltage signal at one frequency and a second coil for transmitting a second AC voltage signal at a different frequency, allowing for the charging of receiver devices compatible with various frequency standards using a single device.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If separate charging devices are used for each frequency standard, then each device can efficiently charge its corresponding receiver device, but the setup costs and maintenance costs substantially increase
Solution Approach 1:
The charging device is designed with multiple coils supporting different frequency standards (Qi standard at 100-400 kHz and AFA standard at 6-8 MHz), enabling a single device to charge receiver devices with different frequency standards, thereby reducing the total number of charging devices needed while maintaining charging efficiency
Solution Approach 2:
The charging device is divided into multiple independent coils, each optimized for a specific frequency standard, allowing the system to segment frequency support into modular components that can be selectively activated based on the receiver device type
2Reliability
If multiple separate charging devices are deployed for different frequency standards, then each frequency standard has dedicated support, but the maintenance costs substantially increase
Solution Approach 1:
Multiple coils supporting different frequency standards are merged into a single charging device, consolidating what would otherwise require separate devices, thereby reducing maintenance costs through unified device management while maintaining dedicated frequency standard support
3Device complexity
If a single charging device supports multiple frequency standards, then setup costs are reduced, but the device complexity increases
Solution Approach 1:
The charging device achieves universality by incorporating multiple coils that support both Qi standard (100-400 kHz) and AFA standard (6-8 MHz) frequency ranges, reducing the number of devices needed while maintaining frequency standard compatibility through selective coil activation
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 the charging of multiple receiver devices with different frequency standards using a single wireless charging device, reducing setup and maintenance costs while maintaining efficient power transfer, and minimizing self-heating and electromagnetic interference issues.
Implementation Method 1
a first coil embedded in a printed circuit board and configured to transmit a first AC voltage signal having a first frequency
Implementation Method 2
a second coil disposed on the printed circuit board and configured to transmit a second AC voltage signal having a second frequency
Data Source
AI summary
A transmitting assembly (114, 214, 334) configured to transmit electric power in a universal wireless charging device (102, 200, 302) is presented. The transmitting assembly (114, 214, 334) includes a first coil (116, 216, 316) embedded in a printed circuit board (220) and configured to transmit a first AC voltage signal having a first frequency. Also, the transmitting assembly (114, 214, 334) includes a second coil (118, 218, 318) disposed on the printed circuit board (220) and configured to transmit a second AC voltage signal having a second frequency, wherein the second frequency is different from the first frequency, and wherein the first AC voltage signal having the first frequency and the second AC voltage signal having the second frequency are used to wirelessly charge a plurality of receiver devices (104, 106) having different frequency standards.