Voltage Converter for Wireless Power Reception
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Solution Overview
Problem
Current wireless charging technologies face inefficiencies in power consumption and transformation efficiency, particularly in the initialization and stabilization periods of wireless power reception devices.
Innovation Solution
A voltage converter system comprising a high voltage regulator, a buck converter, and a dual input linear regulator unit, which converts rectified voltage to multiple load voltages with varying power transformation efficiencies during initialization and stabilization periods, optimizing power usage and efficiency.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Loss of energy
If a high voltage regulator is used during the stabilizing period, then the power transformation efficiency is lower, but the system complexity is reduced
Solution Approach 1:
The voltage converter dynamically switches between different voltage regulation paths based on the operating period. During the initializing period, it uses a first voltage regulation path, and during the stabilizing period, it switches to a second voltage regulation path. This dynamic switching resolves the contradiction by adapting the system configuration to different operational states, achieving high efficiency during stabilization while maintaining system simplicity.
Solution Approach 2:
The voltage converter is segmented into multiple regulation paths: a first voltage regulation path for the initializing period and a second voltage regulation path for the stabilizing period. This segmentation allows each path to be optimized for its specific function, with the second path using a buck converter structure that achieves higher power transformation efficiency during the stabilizing period.
2Use of energy by moving object
If a single voltage regulation path is used throughout operation, then the device complexity is reduced, but the power consumption increases during the stabilizing period
Solution Approach 1:
The system employs dynamic switching between voltage regulation paths based on the operational phase. A control unit detects whether the system is in the initializing period or stabilizing period and switches the voltage regulation path accordingly. During the stabilizing period, the system switches to the second voltage regulation path that consumes less power, thereby reducing overall power consumption while managing the increased device complexity through automated control.
3Loss of energy
If voltage regulation is optimized for the stabilizing period, then the power transformation efficiency increases, but the initialization process becomes more complex
Solution Approach 1:
The voltage converter is divided into distinct regulation paths for different operational phases. The first voltage regulation path is optimized for the initializing period with appropriate regulation characteristics, while the second voltage regulation path is optimized for the stabilizing period with higher efficiency characteristics. This segmentation allows each path to be independently optimized without compromising the other.
Solution Approach 2:
The system performs preliminary voltage regulation during the initializing period using the first voltage regulation path, preparing the system for the stabilizing period. This preliminary action ensures that the system is properly initialized before switching to the more efficient second regulation path, managing the complexity by structuring the initialization process as a necessary precursor to high-efficiency operation.
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
The system reduces power consumption and enhances power transformation efficiency in wireless power reception devices by generating appropriate load voltages based on transition detection signals, ensuring efficient charging and operation.
Implementation Method 1
The high voltage regulator converts a rectified voltage to a first load voltage and the rectified voltage is rectified from an input voltage
Implementation Method 2
The buck converter generates an output voltage having a first level based on the rectified voltage during a stabilizing period
Implementation Method 3
Wireless charging technology employs wireless power transmission/reception, and includes a system in which a battery (e.g., a mobile phone battery) is automatically charged if the battery is laid on a charging pad
Data Source
AI summary
A voltage converter includes a high voltage regulator, a buck converter and a dual input linear regulator unit. The high voltage regulator converts a rectified voltage to a first load voltage. The rectified voltage is rectified from an input voltage. The buck converter generates an output voltage having a first level based on the rectified voltage during a stabilizing period and provides a transition detection signal that is enabled when the output voltage transitions to the first level. The stabilizing period is successive to an initializing period. The dual input linear regulator unit receives the first load voltage, the output voltage and a reference voltage, generates a second load voltage based on the first load voltage during the initializing period, and generates the second load voltage based on the output voltage during the stabilizing period.