Power Supply System Dynamic Input Switching for DC Conversion Efficiency
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Solution Overview
Problem
Portable electronic devices face a trade-off between system performance and battery duration, with existing methods to enhance battery life either increasing production costs or requiring high-efficiency elements that are costly to design.
Innovation Solution
A power supply system with a transformer, selection module, first-stage DC conversion module, and switching module that allows for efficient power conversion by switching between external and battery power, reducing conduction resistances and energy loss in second-stage DC conversion modules.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Duration of action of moving object
If battery capacity is expanded to enhance battery duration, then battery duration is improved, but production cost increases
Solution Approach 1:
The patent changes the operating parameters of the second-stage DC conversion modules by dynamically adjusting their input power source between battery power and first DC power based on device state. This parameter change optimizes power conversion efficiency without requiring larger battery capacity, thereby extending battery duration without increasing production cost
2Loss of energy
If high-efficiency elements are utilized to reduce energy loss, then power conversion efficiency is improved, but design cost increases
Solution Approach 1:
The patent implements a dynamic power supply architecture where the switching module dynamically selects between battery power and first DC power as input to the second-stage DC conversion modules based on real-time device state. This dynamic adjustment optimizes power conversion efficiency using existing components without requiring expensive high-efficiency elements, reducing design cost while minimizing energy loss
Solution Approach 2:
The switching module serves multiple functions: it selects power sources, controls power flow direction, and adjusts operating parameters of DC conversion modules. This multi-functionality eliminates the need for additional specialized high-efficiency components, reducing design complexity and cost while effectively managing energy loss
3Power
If system performance is increased, then system performance is improved, but power consumption increases, reducing battery duration
Solution Approach 1:
The patent dynamically adjusts the power conversion system's operating state based on device performance requirements. When high performance is needed, the system uses first DC power from the power adapter; when low performance is needed, it uses battery power. This dynamic adaptation allows high system performance when required while extending battery duration during normal operation
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 enhances power conversion efficiency and extends battery duration while maintaining low manufacturing costs, reducing energy loss and improving competitiveness.
Implementation Method 1
a transformer, for receiving an external alternating current (AC) power, to transform the external AC power into an external direct current (DC) power
Data Source
AI summary
A power supply system includes a transformer for converting an external AC power into an external DC power, a battery for providing a battery power, a selection module for outputting the external DC power or the battery power, a first-stage DC conversion module for converting power provided by the selection module into a first DC power, a plurality of second-stage DC conversion module, each for converting an input power into a second DC power, and a switching module for switching to output the battery power or the first DC power of the first-stage DC conversion module as the input power of each of the plurality of second-stage DC conversion module according to the external DC power.