Intelligent Energy Management for Electronic Devices
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Solution Overview
Problem
Electronic devices with multiple power sources face challenges in maximizing energy efficiency and extending product lifetime, particularly when parasitically derived power is unavailable or limited, leading to battery discharge and operational failures.
Innovation Solution
The implementation of an intelligent energy management system that dynamically selects and utilizes available power sources, including parasitic, rechargeable, intermittent, and continuous sources, using a processor-controlled source selector and function selector to prioritize power sources and sinks, ensuring continuous operation and extending battery life by optimizing power usage and switching between sources based on availability and parameters.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the device uses a rechargeable battery as a secondary power source, then operational continuity is improved when primary power is unavailable, but battery discharge and operational failures occur when parasitic power is unavailable or limited
Solution Approach 1:
The system automatically monitors power source availability and performs switching operations without external intervention. The processor detects when parasitic power becomes unavailable and autonomously transitions to rechargeable battery power, then back to parasitic power when available again, eliminating the need for manual power source management and ensuring continuous operation.
Solution Approach 2:
The power source configuration is made dynamic rather than static. The system continuously adapts its power source selection based on real-time availability conditions, switching between parasitic power and rechargeable battery power as needed. This dynamic adaptation allows the system to optimize both reliability and battery life by only using battery power when necessary.
2Use of energy by moving object
If the device relies on parasitic power derivation, then energy efficiency is improved, but operational failures occur when parasitic power is unavailable or limited
Solution Approach 1:
The system prepares for potential parasitic power unavailability by having a rechargeable battery ready as a backup power source. This beforehand cushioning ensures that when parasitic power becomes unavailable or limited, the device can immediately switch to battery power without operational failure, thus maintaining reliability while preserving the energy efficiency benefits of parasitic power when available.
3Duration of action of stationary object
If the device implements intelligent energy management with multiple power sources, then operational life is extended and energy efficiency is improved, but device complexity increases
Solution Approach 1:
The rechargeable battery serves multiple functions: it acts as a backup power source when parasitic power is unavailable, provides supplemental power when parasitic power is limited, and can be recharged from external sources. This multi-functionality allows a single component to address multiple power management scenarios, extending device lifespan without proportionally increasing system complexity.
Data Source
AI summary
Energy management of an electronic device using multiple electric power sources. The electric power sources may include a parasitic electric power source, a rechargeable electric power source, an intermittent electric power source, and a continuous electric power source. The electronic device further may include a power supply for receiving the electric power from the source(s) and supplying electric power to the various components of the electronic device that require power. The electronic device may include a source selector for controlling which power source supplies electric power to the power supply. Energy management of the electronic device may be configured to use a permanently exhaustible power source such as a battery only when other power sources are unavailable.