Wireless Power Transmission Dynamic Voltage Regulation
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Solution Overview
Problem
Existing wireless power transmission systems face challenges in efficiently supplying power to multiple devices without exceeding the voltage limits of circuit elements, leading to potential damage and increased costs due to the need for high-maximum allowable voltage circuit elements.
Innovation Solution
A wireless power transmission apparatus that dynamically adjusts the frequency or amplitude of high-frequency power based on received voltage values from multiple wireless power reception apparatuses to regulate output voltages within safe limits, using a control circuit to detect new devices and adjust transmission conditions accordingly.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If one wireless power transmission apparatus supplies power to multiple wireless power reception apparatuses simultaneously, then power supply capability is improved, but voltage regulation becomes difficult causing circuit element damage
Solution Approach 1:
The patent implements dynamic adjustment of transmission conditions (frequency and amplitude) based on real-time detection of reception apparatuses and their voltage feedback. The control circuit continuously monitors and adjusts parameters to maintain safe voltage levels across multiple devices, transforming a static power transmission system into a dynamic one that adapts to changing load conditions.
Solution Approach 2:
The patent changes physical parameters (frequency and amplitude of transmission signal) to regulate output voltage. By adjusting these parameters based on feedback from reception apparatuses, the system maintains voltage within safe limits while supplying power to multiple devices simultaneously.
2Loss of energy
If high-frequency power is transmitted to multiple wireless power reception apparatuses, then power transmission efficiency is improved, but voltage overload occurs damaging circuit elements
Solution Approach 1:
The patent implements a feedback mechanism where each reception apparatus measures its received voltage and transmits this information back to the transmission apparatus. The control circuit uses this feedback to adjust transmission amplitude and frequency, ensuring voltage remains within safe limits while maintaining efficient power transfer.
Solution Approach 2:
The system dynamically adjusts transmission parameters based on real-time voltage conditions. When multiple devices are detected, the control circuit modifies frequency and amplitude to prevent voltage overload, transforming the power transmission from a static high-power mode to a dynamic regulated mode.
3Reliability
If circuit elements with high maximum allowable voltage are used, then voltage safety is improved, but device cost increases
Solution Approach 1:
The patent uses standard, cost-effective circuit elements with typical voltage ratings rather than expensive high-voltage components. By implementing active voltage regulation through frequency and amplitude adjustment, the system protects these standard components from overload, avoiding the need for costly high-voltage rated parts.
Solution Approach 2:
The patent changes transmission parameters (frequency and amplitude) to regulate voltage at the reception end, protecting circuit elements from excessive voltage. This approach allows use of standard, inexpensive components rather than requiring expensive high-voltage rated components.
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 safe and efficient power transmission to multiple devices without the need for high-cost circuit elements, preventing voltage overload and ensuring reliable operation of wireless power reception apparatuses.
Implementation Method 1
electric power is transmitted contactlessly from a wireless power transmission apparatus to a wireless power reception apparatus by using electromagnetic induction between a transmission coil of the wireless power transmission apparatus and a power reception coil of the wireless power reception apparatus
Implementation Method 2
a wireless power transmission system using a resonant transmission coil and a resonant power reception coil (resonant magnetic coupling) is capable of maintaining a high transmission efficiency
Data Source
AI summary
In a case that the at least one transmission antenna is transmitting a high-frequency power to at least a first wireless power reception apparatus and it is detected that at least a second wireless power reception apparatus is newly electromagnetically coupled with at least one transmission antenna, a wireless power transmission apparatus changes one of a frequency or a amplitude of the high-frequency power depending on a voltage value received from each of at least the first and second wireless power reception apparatuses, to regulate the voltage value of each power reception coil included in each of at least the first and second wireless power reception apparatuses to be equal to or lower than an upper limit value of the voltage value, circuit elements included in each of the first and second wireless power reception apparatuses being durable for the upper limit value.