Bidirectional Wireless Charging Voltage Converter
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Solution Overview
Problem
Current wireless charging technologies in mobile devices support reverse charging at relatively low power levels, limiting their effectiveness in efficiently charging other devices.
Innovation Solution
A charging device and method that incorporates a transceiver and a voltage converter with multiple step-up and step-down ratios, allowing the device to both supply power wirelessly and charge itself, thereby increasing the power supply efficiency and charging speed by adjusting voltage and current levels.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Power
If wireless reverse charging is implemented without voltage conversion, then the device can charge other devices, but the power supply capability is limited and charging efficiency is low
Solution Approach 1:
The patent applies parameter changes by dynamically adjusting the step-up ratio of the voltage converter based on the charging power requirements. The voltage converter can switch between different step-up ratios (e.g., 5:1, 4:1, 3:1, 2:1) to optimize the power supply capability and charging efficiency for different wireless charging scenarios, thereby resolving the contradiction between limited power supply and low charging efficiency.
2Productivity
If high power is used for wireless charging, then charging speed improves, but coil heat and energy loss increase
Solution Approach 1:
The patent implements dynamics by making the step-up ratio adjustable rather than fixed. The system can dynamically select appropriate step-up ratios based on real-time charging requirements, allowing high power output when needed while avoiding excessive heat generation. This dynamic adjustment capability enables the system to optimize between charging speed and heat management.
3Adaptability or versatility
If a single step-up ratio is used in the voltage converter, then the device structure is simple, but the adaptability to different charging power requirements is poor
Solution Approach 1:
The patent applies segmentation by dividing the voltage conversion function into multiple discrete step-up ratios. Instead of using a single complex continuous conversion system, the patent implements multiple fixed step-up ratios (5:1, 4:1, 3:1, 2:1) that can be selectively activated. This segmented approach provides adaptability to different charging power requirements while maintaining relatively simple device structure through modular design.
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
Enhances the power supply capability for wireless charging, reduces coil heat and loss, and improves charging efficiency by maintaining a controllable current range, while also enabling the device to act as a transmitter for charging other devices.
Implementation Method 1
The voltage converter may be connected with the transceiver and the power supply, and may be configured to step up a voltage output by the power supply and provide the stepped up voltage for the transceiver when the first terminal supplies power
Implementation Method 2
The transceiver may be configured to send a wireless charging signal out based on the voltage stepped up by the voltage converter when the first terminal supplies power
Implementation Method 3
to step down a voltage input by the transceiver and supply the stepped down voltage to the power supply when the first terminal is charged
Data Source
AI summary
A charging device, implemented by a first terminal, includes a transceiver, a voltage converter, and a power supply. The voltage converter is connected with the transceiver and the power supply, and is configured to step up a voltage output by the power supply and provide the stepped up voltage for the transceiver when the first terminal supplies power, and to step down a voltage input by the transceiver and supply the stepped down voltage to the power supply when the first terminal is charged. The transceiver is configured to send a wireless charging signal out based on the voltage stepped up by the voltage converter when the first terminal supplies power, and to receive a wireless charging signal and convert the received wireless charging signal into an input voltage to transmit the input voltage to the voltage converter when the first terminal is charged.