Wireless Power Receiver Automatic Supply Selection
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Solution Overview
Problem
Conventional wireless power receivers lack simple, efficient, and convenient techniques for switching between wired and wireless power supplies, limiting user flexibility and energy efficiency.
Innovation Solution
An electronic system with a selection module that automatically selects between a primary wired power supply and a secondary wireless power supply based on availability, using switches and control subcircuits to enable or disable power sources and prevent reverse leakage current, allowing seamless transition between power sources.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Loss of energy
If a wireless power receiver is continuously engaged with a wireless power transmitter, then wireless power transfer is maintained, but energy is wasted when wired power is available and the wireless transmission is not needed
Solution Approach 1:
The system employs a control circuit that continuously monitors the operational state of both wired and wireless power supplies. When wired power becomes available, the control circuit detects this state and automatically disables the wireless power receiver, preventing unnecessary energy transmission. This feedback mechanism ensures optimal energy efficiency by dynamically adjusting power source selection based on real-time system conditions.
Solution Approach 2:
The power management system operates autonomously without requiring user intervention. The control circuit automatically detects the availability of wired power and manages the switching between power sources, enabling the system to serve itself by making intelligent decisions about power supply selection and disabling unnecessary wireless power transmission when wired power is present.
2Reliability
If both wired and wireless power supplies are enabled simultaneously, then power availability is maximized, but reverse leakage current and excessive energy loss occur
Solution Approach 1:
The control circuit is configured to detect the availability of wired power before enabling it and to proactively disable the wireless power receiver in advance. This preliminary action prevents the simultaneous operation of both power supplies, thereby avoiding reverse leakage current and excessive energy loss before they can occur.
Solution Approach 2:
The control circuit acts as an intermediary between the wired and wireless power supplies, managing their interaction. It monitors both power sources and coordinates their operation to ensure they do not operate simultaneously, thereby preventing harmful effects such as reverse leakage current while maintaining reliable power supply availability.
3Ease of operation
If manual switching between power supplies is implemented, then device complexity is reduced, but user convenience and ease of operation decrease
Solution Approach 1:
The system implements automatic power supply selection that operates without user intervention. The control circuit autonomously detects the availability of wired power and manages the switching between power sources, eliminating the need for manual user actions while providing enhanced convenience and optimal energy efficiency.
Data Source
AI summary
A system and method of wireless power transfer using automatic power supply selection includes an electronic system. The electronic system includes an electronics module, a primary power supply that receives power from a primary external power source, a secondary power supply that receives power from a secondary external power source, and a selection module. When the primary power supply is operative, the selection module selects the primary power supply to supply power to the electronics module and disables the secondary power supply. When the primary power supply is not operative and the secondary power supply is operative, the selection module selects the secondary power supply to supply power to the electronics module. When the secondary power supply is disabled, the secondary power supply disables the secondary external power source.