Wireless Power Transfer Output Control for Multi-Device Charging
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing wireless power transmission systems lack a method for controlling the short-distance field distance based on the environment, which limits their adaptability and efficiency in local computing environments.
Innovation Solution
A method and apparatus for power control in a wireless power transmission system, where a main device receives information from peripheral devices, determines a reference device based on this information, and adjusts output power accordingly to optimize power transmission based on the state of each peripheral device.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If wireless power transmission is performed without power control, then power can be transmitted to multiple peripheral devices, but power transmission efficiency and system adaptability deteriorate
Solution Approach 1:
The patent implements dynamic power control by continuously monitoring the states of peripheral devices (charging level, power consumption, temperature) and adjusting the power transmission parameters in real-time. The main device dynamically selects a reference peripheral device and adjusts output power based on feedback information, making the system adaptable to changing conditions while maintaining high transmission efficiency.
Solution Approach 2:
The patent establishes a feedback mechanism where peripheral devices transmit state information (charging level, power consumption, temperature) to the main device. The main device uses this feedback to determine the reference peripheral device and adjust power transmission accordingly, creating a closed-loop control system that improves both efficiency and adaptability.
2Reliability
If power is transmitted to all peripheral devices at maximum power, then all devices can receive sufficient power, but energy waste and heat generation increase
Solution Approach 1:
The patent applies local quality by providing different power transmission levels to different peripheral devices based on their individual needs. Instead of uniform maximum power to all devices, the system identifies the reference peripheral device with the most urgent power needs and adjusts power distribution accordingly, reducing energy waste while ensuring reliable power reception for devices that need it.
Solution Approach 2:
The patent changes power transmission parameters (output power level, frequency) based on the state of the reference peripheral device. By monitoring charging levels and power consumption patterns, the system adjusts transmission parameters dynamically, ensuring reliable power delivery when needed while minimizing energy waste during normal operation.
3Measurement precision
If the main device monitors all peripheral devices continuously, then power control accuracy improves, but system complexity and communication overhead increase
Solution Approach 1:
The patent implements partial monitoring by selecting only one reference peripheral device at a time for detailed state monitoring and power control, rather than continuously monitoring all devices equally. This approach maintains sufficient power control accuracy by focusing resources on the most critical device while reducing overall system complexity and communication overhead.
Data Source
AI summary
A method and an apparatus for controlling power in a wireless power transfer system are disclosed. A method for controlling power of a main device in a wireless power transfer system comprises the steps of: receiving information necessary for power control from a plurality of peripheral devices; identifying the actual power consumption state of the plurality of peripheral devices on the basis of the information necessary for power control, and determining a reference peripheral device on the basis of the actual power consumption state; and determining output power in consideration of the reference peripheral device.