Power Adapter Output Control Using Bus Voltage Intervals
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Solution Overview
Problem
Existing power adapters have inefficient resource utilization and waste charging capability due to fixed heat dissipation capabilities and inefficient power management, particularly at varying input voltages.
Innovation Solution
A method for controlling a power adapter that involves obtaining real-time bus voltage values, matching them with continuous and incremental control voltage intervals, and adjusting the output power command value to match the real-time control voltage interval, thereby optimizing power output and reducing losses.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Loss of energy
If the power adapter operates at fixed output power, then the device structure is simple, but the operating efficiency is low and charging capability is wasted
Solution Approach 1:
The patent implements dynamic output power adjustment by dividing the bus voltage range into multiple intervals and assigning different output power levels to each interval. The controller dynamically switches between power levels based on real-time bus voltage measurements, transforming the fixed power output system into a dynamic adaptive system that optimizes efficiency without requiring complex real-time optimization algorithms.
Solution Approach 2:
The patent changes the operating parameters of the power adapter by establishing a correspondence between bus voltage intervals and output power levels. By monitoring bus voltage and adjusting output power according to pre-defined voltage intervals, the system adapts its operating parameters to match actual power supply conditions, thereby reducing energy loss while maintaining manageable control complexity through predetermined parameter mappings.
2Productivity
If the power adapter uses dynamic output power adjustment, then the operating efficiency is improved, but the control complexity increases
Solution Approach 1:
The patent segments the bus voltage operating range into multiple discrete intervals, with each interval corresponding to a specific output power level. This segmentation approach simplifies the control system by transforming a continuous control problem into a discrete decision-making process, where the controller only needs to determine which voltage interval the current bus voltage falls into and switch to the corresponding power level, thereby improving charging capability utilization without excessive control complexity.
Solution Approach 2:
The patent applies preliminary action by pre-defining the correspondence between voltage intervals and output power levels before operation. The control strategy is established in advance through interval division and power level assignment, eliminating the need for complex real-time calculations during operation. This preliminary configuration enables the system to achieve high productivity by quickly switching between predetermined power levels based on real-time voltage measurements.
3Reliability
If the power adapter operates at maximum power continuously, then the output capability is maximized, but the heat dissipation capability is exceeded and safety is compromised
Solution Approach 1:
The patent implements dynamic power adjustment that adapts output power levels to actual power supply conditions and heat dissipation capabilities. By continuously monitoring bus voltage and adjusting power output accordingly, the system ensures safe operation within thermal limits while maximizing output capability when conditions permit, thereby resolving the contradiction between reliability and power output through dynamic adaptation rather than fixed operation.
Data Source
AI summary
The present disclosure provides a method for controlling a power adapter and a power adapter, and relates to the field of power technologies. The method includes: obtaining a real-time value of a bus voltage of the power adapter; matching the real-time value of the bus voltage with N control voltage intervals V1 to VN to obtain a real-time control voltage interval that matches the real-time value of the bus voltage, wherein N≥2, the N control voltage intervals are continuous and incremental from V1 to VN, and the N control voltage intervals V1 to VN correspond to N different output power control values P1 to PN; and adjusting, according to the real-time control voltage interval, an output power command value of the power adapter to an output power control value corresponding to the real-time control voltage interval.