Power Storage Adapter Peak Shift Battery Switching
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Solution Overview
Problem
Portable information handling systems face inefficiencies in power management during peak usage periods, as they often continue to draw power from AC line sources even when the battery is fully charged, leading to unnecessary energy consumption and reduced battery lifespan.
Innovation Solution
A power storage adapter (PSA) that includes a controller capable of receiving peak shift messages, disconnecting from AC line power when the battery is fully charged, and reconnecting when necessary, using a USB Type-C port and USB Power Delivery protocol for communication with the information handling system.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Use of energy by moving object
If the PSA continues to draw power from AC line source when battery is fully charged, then power availability is maintained, but energy consumption increases and battery lifespan decreases
Solution Approach 1:
The PSA controller receives peak shift indication messages from the information handling system or power source, monitors battery state of charge, and dynamically adjusts power drawing behavior based on feedback signals. This feedback mechanism enables the system to respond to peak shift conditions while maintaining power availability and reducing energy consumption during high-rate charging periods.
Solution Approach 2:
The system dynamically transitions between different power operating modes based on real-time conditions. When a peak shift indication is received and battery charge level is sufficient, the PSA switches from AC line power drawing to battery power supply mode, and can reconnect to AC power when the indication ends or battery level drops, optimizing both energy efficiency and power availability.
2Loss of energy
If the PSA disconnects from AC line power during peak shift, then energy consumption is reduced, but power availability may be compromised
Solution Approach 1:
The system performs preliminary actions by charging the battery to sufficient levels before peak shift events occur, or maintaining charge levels above thresholds during normal operation. When a peak shift indication is received, the battery is already charged enough to provide power during the high-rate charging period, preventing energy waste while ensuring power supply continuity through the battery backup capability.
Solution Approach 2:
The battery serves as an intermediary energy storage device between the AC line power source and the information handling system. During peak shift conditions, the battery mediates power supply by taking over from the AC source, allowing the PSA to disconnect from AC power without compromising power availability to the system. The battery absorbs the shock of discontinuous power supply.
3Productivity
If the PSA monitors and responds to peak shift messages, then energy efficiency is improved, but device complexity increases
Solution Approach 1:
The PSA controller performs multiple functions using a unified control architecture: it manages normal charging operations, receives and processes peak shift indication messages from various sources (information handling system or external entities), monitors battery state of charge, controls disconnection/reconnection to AC power, and communicates with the information handling system. This multi-functionality reduces the need for separate dedicated circuits for each function, managing complexity while achieving high energy management efficiency.
Data Source
AI summary
A power storage adapter may use a peak shift operation method when supplying electrical power from an AC line power source to a portable information handling system and the power storage adapter receives an indication of a peak shift associated with the AC line power source. In particular, the power storage adapter may cease drawing power from the AC line power source and begin supplying electrical power from a battery included with the power storage adapter to the portable information handling system.