Wireless Power Transmission Device With Separate Feedback Control Unit
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Solution Overview
Problem
Existing wireless charging technologies face interference and instability due to the use of the same inductive coils for power transmission and RFID feedback signals, limiting their ability to handle higher power transfers effectively.
Innovation Solution
The implementation of a wireless power transmission device that includes a power transmitter, a first transmission unit, a power receiver, a feedback regulator, and a separate second transmission unit for transmitting control signals, allowing for feedback control without sharing the same inductive coils, thereby reducing interference and increasing stability and power transfer capabilities.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If the same inductive coils are used for both power transmission and RFID feedback signals, then the system structure is simplified, but control errors and instability occur due to signal interference
Solution Approach 1:
The patent divides the transmission function into two separate units: a first transmission unit for power transmission and a second transmission unit for control signal transmission. This segmentation eliminates the interference between power signals and control signals, resolving the contradiction between simplified structure and control stability.
Solution Approach 2:
The patent extracts the control signal transmission function from the power transmission unit, creating a dedicated second transmission unit. This extraction removes the harmful interference effect from the system, allowing reliable control even when power transmission is active.
2Power
If higher power transmission is implemented using the same inductive coils, then power transfer capability is improved, but signal interference and control errors become more severe
Solution Approach 1:
By segmenting the transmission functions into separate units, the patent enables higher power transmission through the first transmission unit without compromising control accuracy, as the second transmission unit operates independently with dedicated control signals.
Solution Approach 2:
The second transmission unit acts as an intermediary channel for control signals, separate from the high-power first transmission unit. This intermediary structure allows high-power transmission while maintaining accurate control through a dedicated, interference-free pathway.
3Reliability
If a separate second transmission unit is added for control signals, then control stability and power transfer capacity are improved, but device complexity increases
Solution Approach 1:
The second transmission unit is designed with multi-functionality, capable of transmitting both power and control signals. This universal design allows the system to achieve improved control stability without proportionally increasing complexity, as the second unit can serve multiple purposes.
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 enhances the stability and power transfer capacity of wireless charging systems by eliminating control errors and interference, enabling more efficient and reliable high-power transmission without the need for additional RFID systems.
Implementation Method 1
The first transmission unit is coupled to the power transmitter for wirelessly transmitting the power generated by the power transmitter
Implementation Method 2
The second transmission unit is coupled between the feedback regulator and the receive controller for wirelessly transmitting the control signal to the receive controller
Data Source
AI summary
A wireless power transmission device includes a power transmitter, a first transmission unit, a power receiver, a feedback regulator, a receive controller, and a second transmission unit. The power transmitter is for generating power, and the first transmission unit is for wirelessly transmitting power generated by the power transmitter. The power receiver is for receiving and rectifying the power from the first transmission unit. The feedback regulator is for receiving a feedback signal from the power receiver to generate an AC control signal. The receive controller is for receiving the control signal to generate a driving signal. The second transmission unit is for wirelessly transmitting the control signal to the receive controller.