USB Receptacle Power Switching for Flexible High-Output Charging
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Solution Overview
Problem
Conventional USB power transmission solutions face issues of low output power, low power conversion efficiency, and insufficient charging flexibility.
Innovation Solution
A power transmission system for USB receptacles that includes AC-to-DC conversion modules, switch modules, and a control module to manage power distribution based on device connection information, allowing for flexible power supply to multiple USB interfaces, reducing module count, and enhancing power conversion efficiency and output voltage range.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Power
If conventional power transmission solutions are used for USB receptacles, then the system structure is simple, but the output power is low and power conversion efficiency is poor
Solution Approach 1:
The power transmission system is segmented into multiple AC-to-DC conversion modules, each corresponding to a USB interface. This segmentation allows each module to independently convert power, thereby increasing the overall output power and conversion efficiency without requiring a single complex high-power conversion system.
Solution Approach 2:
The AC-to-DC conversion modules are designed with multi-functionality, serving both as power converters and as controllable power sources that can be dynamically allocated to different USB interfaces. This universal design enables the same hardware components to fulfill multiple roles, increasing power output without proportionally increasing system complexity.
2Loss of energy
If multiple AC-to-DC conversion modules are used, then power conversion efficiency and output voltage range are improved, but the number of modules increases production cost and device size
Solution Approach 1:
The system employs AC-to-DC conversion modules capable of outputting variable voltage and current parameters. By dynamically adjusting these parameters based on the connected devices' requirements, the system achieves high power conversion efficiency across different operating conditions without needing multiple fixed-parameter modules, thereby controlling production costs.
3Volume of stationary object
If AC-to-DC conversion modules output variable voltage and current, then the number of modules is reduced and device size is decreased, but control complexity increases
Solution Approach 1:
The control module incorporates feedback mechanisms that monitor the connection status of USB interfaces and the power requirements of connected devices. Based on this feedback, the control module automatically adjusts the output voltage and current of the AC-to-DC conversion modules, reducing the need for multiple physical modules while maintaining simple device size.
4Adaptability or versatility
If switch module enables flexible connection between AC-to-DC conversion modules and USB interfaces, then charging flexibility is improved, but switch module complexity increases
Solution Approach 1:
The switch module is designed with dynamic switching capabilities, allowing the connections between AC-to-DC conversion modules and USB interfaces to be reconfigured in real-time based on device connection information. This dynamic allocation enables flexible charging scenarios without requiring a complex fixed-connection architecture, achieving adaptability with manageable switch module complexity.
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 increases charging flexibility and power output range, reducing production costs and device size while improving power conversion efficiency, making it suitable for wall-mounted receptacles.
Implementation Method 1
a plurality of AC-to-DC conversion modules, corresponding one-to-one to the plurality of USB interfaces
Data Source
AI summary
A power transmission system and method for a universal serial bus (USB) receptacle includes multiple AC-to-DC conversion modules corresponding one-to-one to multiple USB interfaces; a switch module including a first switch submodule electrically coupled between each AC-to-DC conversion module and its corresponding USB interface, and a second switch submodule electrically coupled between each AC-to-DC conversion module and its non-corresponding USB interface; a control module coupled to the multiple AC-to-DC conversion modules, the multiple USB interfaces, and the switch module, for controlling these components based on device connection information of the multiple USB interfaces, to supply power to the corresponding or non-corresponding USB interfaces.