Battery Charge Manager for Rapid Portable System Startup
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Solution Overview
Problem
Portable information handling systems face delays in startup due to inadequate battery charge, as they rely on low-power charging and thin lithium ion batteries with limited cell sizes, often requiring a minimum 3% to 5% charge to boot, leading to prolonged wait times when the battery is low.
Innovation Solution
A battery charge manager system that disconnects the battery from the discharge path when it reaches a critical level, allowing only self-discharge, and reconnects it when external power is available to ensure a rapid startup by combining battery and external power for booting, eliminating charge leakage paths and ensuring a reserve charge.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Length of moving object
If thin lithium ion batteries with smaller cell sizes are used to minimize housing thickness, then the portability and form factor are improved, but battery life under heavy usage and charge capacity are reduced
Solution Approach 1:
The battery charge manager proactively monitors battery charge levels and preemptively disconnects the battery from the discharge path before the charge drops below the critical threshold, preventing the need for delayed boot operations
Solution Approach 2:
The battery charge manager acts as an intermediary control system between the battery and the discharge path, using a switch to mediate the connection based on charge level thresholds, enabling intelligent power management without modifying the physical battery or charger
2Ease of operation
If low-power USB charging devices are used for recharging, then charging convenience and device compatibility are improved, but charging time to reach full charge is increased
Solution Approach 1:
The system performs preliminary charging actions by maintaining the battery in a connected state to external power sources whenever possible, allowing the battery to top up during idle periods before boot operations are needed
Solution Approach 2:
The battery charge manager maintains continuous charging operations by keeping the battery connected to external power sources throughout device operation, ensuring the battery charge level is continuously maintained above critical thresholds without interruption
3Duration of action of moving object
If the battery charge level is allowed to drop below critical threshold to maximize usage time, then battery utilization is improved, but startup delays occur when battery charge is insufficient
Solution Approach 1:
The battery charge manager implements continuous feedback monitoring of battery charge levels, comparing actual charge against critical thresholds and dynamically adjusting the switch state to maintain adequate charge for boot operations
Solution Approach 2:
The system dynamically adjusts the battery connection state based on real-time charge level conditions, transitioning between connected and disconnected states to optimize both usage time and boot readiness according to current operational context
Data Source
AI summary
A portable information handling system manages battery charge to maintain a minimum level that supports boot by disconnecting the battery from a battery discharge path so that battery charge is lost substantially only to self-discharge. The battery automatically reconnects to the battery discharge path if external power becomes available to charge the battery. The minimum battery charge level provides adequate power in combination with the external power to support boot of the portable information handling system to an operational state.