Wireless Power Receiver Coordination for Overload Prevention
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Solution Overview
Problem
In wireless power transmission systems, over-powered states of over-voltage or over-current can occur when multiple receivers are charged simultaneously, leading to inconvenient interruptions as the transmitter or receivers stop charging to protect against over-powering, preventing users from charging or using the receivers effectively.
Innovation Solution
A method and apparatus that control the wireless power quantity supplied to receivers through communication between them, allowing registered receivers to assess the remaining power capacity of the transmitter and inform joining receivers whether the requested power can be supplied, thereby preventing over-loading and maintaining a standby state when capacity is insufficient.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If multiple receivers are charged simultaneously from a single transmitter, then charging efficiency and user convenience are improved, but over-powered states of over-voltage or over-current occur leading to charging interruptions
Solution Approach 1:
The patent implements a feedback mechanism where receivers communicate their power requirements to other receivers through the transmitter. Each receiver receives information about the remaining power capacity and adjusts its power request accordingly, preventing over-powered states while enabling multiple devices to charge simultaneously.
Solution Approach 2:
Before a receiver begins charging, it first receives information about the transmitter's remaining power capacity from other registered receivers. This preliminary information allows the receiver to determine whether to request full power, reduced power, or wait in standby, preventing over-loading before it occurs.
2Use of energy by moving object
If the transmitter supplies maximum power to multiple receivers, then power distribution efficiency is improved, but over-loading occurs causing the transmitter or receivers to stop charging
Solution Approach 1:
The patent enables dynamic power adjustment where receivers can switch between different power modes (full power, reduced power, standby) based on real-time transmitter capacity information. This dynamic adaptation allows the system to maintain optimal power distribution while preventing over-loading conditions.
Solution Approach 2:
Each receiver autonomously determines its power request based on information received from other receivers about the transmitter's remaining capacity. The receivers self-regulate their power consumption without requiring complex centralized control, maintaining charging continuity while preventing over-loading.
3Speed
If receivers request power without checking transmitter capacity, then charging speed is improved, but over-voltage or over-current occurs leading to safety issues
Solution Approach 1:
The patent implements preliminary anti-action by having receivers proactively check the transmitter's remaining power capacity before requesting power. This advance checking prevents over-voltage and over-current conditions by ensuring that power requests do not exceed the transmitter's safe operating limits.
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 ensures safe and efficient power distribution by preventing over-loading, allowing multiple receivers to be charged without interrupting the charging process, ensuring users can charge their devices without risking damage from over-powering.
Implementation Method 1
resonance type power transmission uses a similar concept of physics in which vibration of a tuning fork causes a wine glass beside the tuning fork to vibrate at the same frequency. However, instead of resonating sound, resonance type power transmission resonates an electromagnetic wave containing electrical energy
Implementation Method 2
Wireless charging technology may be roughly divided into an electromagnetic induction type using a coil, a resonance type using resonance
Data Source
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AI summary
A method and apparatus are provided for controlling power of a receiver in a wireless power transmission/reception system, wherein a wireless power quantity supplied to receivers from a transmitter is controlled through communication between the receivers. The method includes receiving required power information transmitted from a joining receiver in a charging area of a transmitter; determining whether the transmitter is capable of supplying required power to the joining receiver based on the required power information; and requesting the joining receiver to maintain a standby state, when the transmitter is not capable of supplying the required power to the joining receiver.