Wireless Power Transfer System for Multi-Device Charging
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Solution Overview
Problem
Existing wireless charging methods face challenges in simultaneously charging multiple devices with different charging voltages and currents, as they often require customized solutions, leading to inefficiencies and increased costs, and wireless charging limits flexibility in adjusting power levels for individual devices.
Innovation Solution
A wireless power transfer system with a master communication system and multiple wireless power charge transmitters, allowing for the discovery, activation, and load-supporting modes of operation, enabling communication and power transfer to multiple devices using default and adjustable frequencies to accommodate varying charging needs.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If wireless charging is used to charge multiple devices simultaneously, then charging convenience is improved, but the ability to accommodate different charging voltages and currents deteriorates
Solution Approach 1:
The wireless charging system is divided into multiple independent transmitters, each capable of operating at different power levels and frequencies. This segmentation allows each transmitter to be independently configured to match the specific charging requirements of different devices, thereby maintaining adaptability while enabling simultaneous charging of multiple devices.
Solution Approach 2:
The system dynamically adjusts the operating frequency and power level of each transmitter based on the detected device requirements. By making these parameters variable rather than fixed, the system can adapt to different charging voltages and currents needed by various devices while maintaining the convenience of wireless simultaneous charging.
2Device complexity
If a single wireless charging element is used, then system simplicity is improved, but the ability to provide customized power levels to individual devices deteriorates
Solution Approach 1:
Each wireless transmitter is designed with multi-functionality, capable of operating across a range of power levels and frequencies to serve different device types. This universal design allows a single transmitter to adapt to various charging requirements without requiring entirely separate specialized charging elements for each device type.
Solution Approach 2:
The system changes operating parameters (frequency and power level) of the transmitters based on device detection and requirements. By making these parameters adjustable, the system achieves customized power delivery to individual devices while maintaining a relatively simple overall architecture without needing completely separate charging circuits for each device type.
3Device complexity
If fixed power level wireless charging is used, then system control simplicity is improved, but charging efficiency for devices with different power requirements deteriorates
Solution Approach 1:
The system dynamically changes the power level parameter of each transmitter based on the specific charging requirements of the detected device. This parameter adjustment enables efficient charging across different device types with varying power needs while maintaining relatively simple control through automated detection and adaptation algorithms.
Solution Approach 2:
The wireless charging system incorporates feedback mechanisms that detect the power requirements of placed devices and automatically adjust transmitter output accordingly. This feedback loop enables the system to optimize charging efficiency for each device without requiring complex manual configuration, balancing control simplicity with charging efficiency.
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
Enables efficient and flexible simultaneous charging of multiple devices with different power requirements, reducing the need for customized solutions and improving charging efficiency by dynamically adjusting power levels and frequencies.
Implementation Method 1
Charge transfer from the wireless-charging element to the rechargeable battery may be implemented in several different ways, for example, by using an inductive charge coupling mechanism
Implementation Method 2
Charge transfer from the wireless-charging element to the rechargeable battery may be implemented in several different ways, for example, by using a capacitive charge coupling mechanism
Data Source
AI summary
Systems and methods pertaining to wireless power transfer are disclosed. In one implementation, a system includes a wireless charger that is used to charge at least one wirelessly chargeable device. The wireless charger includes a master communication system and at least one wireless power charge transmitter, while the wirelessly chargeable device includes a slave wireless communication system configured at least in part, for communicating with the master wireless communication system in order to execute a wireless power charging operation. The wirelessly chargeable device further includes a wireless power charge receiver configured to receive a wireless power charge from the wireless power charge transmitter contained in the wireless charger.