Multi-Source Power Switching With Threshold Voltage Control
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Solution Overview
Problem
Existing power management devices face inefficiencies in transmitting energies from various energy sources to a load device, often resulting in discarded energies due to cost, size, or incompatibility with diverse application environments.
Innovation Solution
A power management device with a storage unit, comparison control unit, switching unit, and power transmission control unit that efficiently manages and transmits energies from multiple energy sources by using threshold voltage pairs and switch control signals to maintain energy transfer around maximum power points.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If energies from multiple energy sources are transmitted to a load device, then energy supply diversity is improved, but energy transmission efficiency deteriorates due to discarded energies
Solution Approach 1:
The patent segments the energy management system into multiple storage nodes (first storage node, second storage node, etc.), each independently connected to different energy sources. Each storage node can be independently controlled by its own switch, allowing selective activation of energy sources based on their availability and the load's requirements, thereby preventing energy waste while maintaining supply diversity.
Solution Approach 2:
The patent implements dynamic control of switch states based on real-time voltage level comparisons. The comparison control unit continuously monitors voltage levels of storage nodes and dynamically adjusts switch states to activate or deactivate specific energy sources. This dynamic adaptation ensures optimal energy transmission efficiency by selecting appropriate energy sources based on current system conditions.
2Productivity
If threshold voltage pairs are used to control switch states, then energy transmission efficiency is improved, but device complexity increases
Solution Approach 1:
The control system is segmented into modular comparison control units, each handling voltage level comparisons for specific storage nodes. Each comparison control unit independently manages its associated switch and storage node, creating a scalable modular architecture. This segmentation simplifies the overall control logic while maintaining efficient energy transmission through distributed decision-making.
Solution Approach 2:
The comparison control units operate autonomously by automatically comparing voltage levels against threshold pairs and generating appropriate switch control signals without requiring external intervention. The system self-regulates by using its own internal voltage measurements and predefined thresholds to make real-time control decisions, reducing the need for complex external control mechanisms.
Data Source
AI summary
Disclosed is a power management device which includes a storage unit, a comparison control unit, a switching unit, and a power transmission control unit. The storage unit includes storage nodes. The comparison control unit outputs switch control signals based on results of comparing voltage levels of the storage nodes and threshold voltage pairs in a one-to-one correspondence. The switching unit includes switches connecting one of the storage nodes to a transmission node. A first switch is turned off when a voltage level of a first storage node is smaller than or equal to a first lower limit voltage. A second switch is immediately turned on when a voltage level of a second storage node is greater than or equal to a second upper limit voltage and when the first switch is turned off.