Power Source Unit Solar Battery Voltage Threshold Switching
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Solution Overview
Problem
Conventional power source units with multiple batteries tend to deplete the primary battery quickly due to selecting the battery with the higher output voltage, even if the solar battery can provide sufficient voltage, leading to inefficient power usage.
Innovation Solution
A semiconductor device with a comparator and solar voltage detection circuit that compares the voltage levels of the primary and solar batteries, outputting the solar voltage when it exceeds a threshold, ensuring the solar battery is utilized efficiently and prolonging the life of the primary battery.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the battery with higher output voltage is selected, then the system can operate with sufficient voltage, but the primary battery depletes more quickly
Solution Approach 1:
The patent changes the selection parameter from voltage magnitude to voltage stability characteristics. The switching circuit monitors voltage fluctuation patterns and selects the solar battery when its voltage remains within a stable range, even if the primary battery offers higher voltage. This parameter transformation resolves the contradiction by prioritizing long-term durability over immediate voltage advantage.
Solution Approach 2:
The patent implements a feedback mechanism where the switching circuit continuously monitors the output voltage of both power sources and compares their stability. Based on this real-time feedback, the system dynamically selects the optimal power source, preventing premature depletion of the primary battery while ensuring sufficient voltage supply to the load.
2Duration of action of moving object
If the solar battery is used more often, then the primary battery lasts longer, but the system may operate with insufficient voltage when solar output is low
Solution Approach 1:
The patent employs dynamic switching capability that adapts to real-time voltage conditions. The switching circuit continuously evaluates the voltage output of both power sources and transitions between them based on current operational needs. This dynamic approach ensures the system maintains sufficient voltage by selecting the primary battery when solar output drops, while maximizing solar battery usage during stable periods.
Solution Approach 2:
The switching circuit uses real-time voltage feedback to make intelligent power source selection. When the solar battery's voltage falls below the threshold required for stable operation, the feedback mechanism triggers a switch to the primary battery, ensuring continuous sufficient power supply while still benefiting from extended primary battery life through selective usage.
Data Source
AI summary
A semiconductor device includes a first signal outputting portion; a second signal outputting portion; and a voltage outputting portion. The first signal outputting portion compares a first voltage output from a first power source and a second voltage output from a second power source, and to output a comparison result. The second signal outputting portion determines whether the second voltage is greater than a threshold voltage, and to output a determination result. The voltage outputting portion outputs the second voltage from an output terminal when the second voltage is greater than the threshold voltage. Further, the voltage outputting portion outputs one of the first voltage and the second voltage from the output terminal when the second voltage is smaller than the threshold voltage.