Power Adaptor Dynamic Ratio Adjustment for Load Efficiency
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Solution Overview
Problem
Existing power adaptors consume excessive power when devices switch to power-saving mode due to a constant power conversion ratio that does not adjust according to load changes, leading to inefficiency.
Innovation Solution
A power adaptor with an inverter, feedback circuit, and adjusting unit that dynamically adjusts the power conversion ratio based on load variations by monitoring output voltage and adjusting the voltage-dividing ratio, allowing for reduced power consumption in power-saving mode and increased power delivery in normal mode.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Power
If the power conversion ratio is kept constant to ensure sufficient power delivery in normal mode, then power delivery capability is improved, but power consumption increases excessively in power-saving mode
Solution Approach 1:
The patent implements dynamic adjustment of the power conversion ratio based on load conditions. The control circuit monitors the load state and dynamically changes the duty cycle of the switching transistor, thereby adjusting the power conversion ratio adaptively between normal mode and power-saving mode, resolving the contradiction between maintaining sufficient power delivery and reducing unnecessary power consumption
Solution Approach 2:
The patent changes the operating parameters (duty cycle, switching frequency) of the power converter based on load conditions. By adjusting these parameters dynamically, the system optimizes the power conversion ratio to match actual power requirements, eliminating excessive power consumption while ensuring adequate power delivery when needed
2Power
If the output voltage is maintained at a higher level to support heavy loads, then power delivery capability is improved, but power consumption increases during light loads
Solution Approach 1:
The system dynamically adjusts the output voltage level according to actual load requirements. The control circuit detects load conditions and modulates the switching transistor's duty cycle accordingly, reducing output voltage during light loads to minimize energy loss while maintaining higher voltage levels during heavy loads to ensure adequate power delivery
Solution Approach 2:
The patent employs a feedback control mechanism where the control circuit continuously monitors load conditions and adjusts the power conversion ratio in response. This closed-loop feedback system ensures the output voltage and power consumption are optimized based on real-time load status, preventing energy waste during light loads while maintaining sufficient power delivery during heavy loads
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 solution effectively reduces power consumption during light loads and ensures sufficient power delivery during heavy loads, enhancing system efficiency by dynamically adjusting the output voltage in response to load changes.
Implementation Method 1
an inverter (20) configured to convert an input voltage into an output voltage according to a power conversion ratio
Data Source
AI summary
A power adaptor includes an inverter, a feedback circuit, a detecting unit, and an adjusting unit. The inverter is configured to convert an input voltage into an output voltage according to a power conversion ratio and adjust the power conversion ratio according to a feedback voltage. The feedback circuit is configured to provide the feedback voltage by voltage-dividing the output voltage according to a specific ratio. The detecting unit is configured to detect a load of an output end of the power adaptor. The adjusting is configured to adjust the specific ratio according to the loading variation of the load.