3D Flux Scanning for Free-Position Multi-Coil Charger Validation
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Solution Overview
Problem
Current wireless charging technologies face challenges in supporting the increasing complexity of mobile devices and varying form factors, requiring improved testing capabilities to ensure efficient and versatile charging solutions.
Innovation Solution
The development of a multi-coil wireless charging system with a free-positioning charging surface, utilizing a matrix of inductive charging cells and a controller to optimally position coils for power transfer, allowing for simultaneous charging of multiple devices without discrete placement requirements, and employing sensing techniques to detect device location and configure the charging cells accordingly.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If wireless charging systems use standards optimized for simple configurations, then basic charging capabilities are provided, but they cannot support increasing complexity of mobile devices and changing form factors
Solution Approach 1:
The wireless charging system is divided into multiple independent coil assemblies, each capable of being individually controlled and optimized. This segmentation allows the system to handle complex charging requirements by activating only the necessary coils, rather than requiring a fully complex system design from the start.
Solution Approach 2:
The system employs dynamic coil selection and configuration based on real-time sensing of device position and charging requirements. The controller dynamically determines which coils to activate and adjusts their operating parameters, enabling the system to adapt to varying device complexities and form factors without requiring a static complex design.
2Adaptability or versatility
If multiple devices are charged simultaneously on a single charging surface, then charging versatility is improved, but device placement precision requirements increase
Solution Approach 1:
The charging surface is divided into multiple independent coil assemblies with distinct sensing zones. Each coil can independently detect and charge a device within its zone, allowing multiple devices to be charged simultaneously without requiring precise placement on a unified grid system.
Solution Approach 2:
Each coil assembly autonomously detects the presence and position of devices within its sensing zone and automatically adjusts its operation accordingly. This self-service capability eliminates the need for centralized precision control, as each coil independently manages its own charging zone.
3Ease of operation
If discrete placement requirements are imposed for device charging, then charging control is simplified, but charging flexibility and user convenience deteriorate
Solution Approach 1:
The controller dynamically selects and activates appropriate coil assemblies based on real-time sensing data regarding device position, size, and power requirements. This dynamic approach provides users with flexible placement options while managing coil control complexity through automated decision-making algorithms.
Solution Approach 2:
The system incorporates sensing mechanisms that continuously monitor device position and charging status, providing feedback to the controller. This feedback loop enables the controller to adjust coil activation and power distribution in real-time, maintaining ease of operation while managing system complexity through intelligent control.
4Ease of manufacture
If switching components complexity is reduced, then manufacturing cost is lowered, but charging efficiency and reliability may be compromised
Solution Approach 1:
The system uses multiple simpler coil assemblies instead of a single complex switching system. Each coil can be independently controlled with simpler switching components, reducing individual component complexity and manufacturing cost while maintaining overall charging efficiency through coordinated operation of multiple coils.
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 solution enables efficient and flexible wireless power transmission to devices of arbitrary size or shape, supporting multiple devices on a single charging surface, while reducing the complexity and cost of switching components and enhancing charging efficiency and reliability.
Implementation Method 1
A plurality of inductive transmitting coils are provided in a charging surface of a wireless charging device
Implementation Method 2
A receiving head having a receiving coil or other sensors that can measure electromagnetic field, flux or wireless signals
Data Source
AI summary
Systems, methods and apparatus for wireless charging are disclosed. A test apparatus has a receiving head configured to provide a measurement signal representative of electromagnetic flux received from one or more transmitting coils of a wireless charging surface, a numerically-controlled stage configured to position the receiving head at a selected point in three-dimensional space above wireless charging surface, and a processor configured to cause the numerically-controlled stage to position the receiving head at the selected point in three-dimensional space, and use the measurement signal to determine magnitude of the electromagnetic flux or power received from the wireless charging surface proximate to the selected point in three-dimensional space.