Adaptive Battery Backup Charging Under Server Power Limits
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Conventional battery backup unit charging techniques charge batteries at maximum rates regardless of system needs, leading to non-compliance with idle power limits, reduced system performance, increased thermal stress, and potential power budgeting failures, especially in modern servers.
Innovation Solution
An adaptive battery backup unit charging system that adjusts the battery charge rate based on system power consumption, power limits, thermal events, and battery health, using a closed-loop algorithm to optimize charging profiles and ensure compliance with idle power requirements while maximizing system performance.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If maximum charge rate is applied to battery backup unit, then battery charging speed is improved, but idle power limit compliance deteriorates
Solution Approach 1:
The patent implements dynamic adjustment of battery charge rate based on real-time system power consumption monitoring. The charge rate transitions from static maximum charging to a variable parameter that adapts to system conditions, allowing maximum charging when system power exceeds limits and minimal charging when system power is at idle levels, thereby resolving the contradiction between charging speed and compliance.
Solution Approach 2:
The patent changes the charge rate parameter from a fixed maximum value to a dynamically adjustable parameter. By modifying the charge rate parameter based on system power consumption relative to power limits, the system achieves both fast charging when possible and compliance when system power is constrained, eliminating the trade-off between charging speed and idle power limit adherence.
2Productivity
If maximum charge rate is applied to battery backup unit, then battery charging speed is improved, but system performance deteriorates
Solution Approach 1:
The system dynamically adjusts battery charge rate based on available system power capacity. When system performance headroom exists, charging proceeds at maximum rate; when system performance is constrained, charging rate is reduced accordingly. This dynamic approach ensures that battery charging never negatively impacts system performance by allocating power based on real-time system capabilities.
Solution Approach 2:
The patent implements a feedback mechanism where system power consumption is continuously monitored and used to adjust battery charge rate. This closed-loop control ensures that battery charging decisions are based on actual system performance conditions, allowing the system to maximize charging speed when performance allows while preventing performance degradation when power is constrained.
3Productivity
If maximum charge rate is applied to battery backup unit, then battery charging speed is improved, but thermal stress increases
Solution Approach 1:
The patent dynamically adjusts battery charge rate in response to thermal conditions and system power availability. By reducing charge rate when thermal stress indicators appear or when system power is constrained, the system prevents excessive heat generation during battery charging while maintaining fast charging capability when thermal conditions permit, thereby resolving the contradiction between charging speed and thermal management.
Solution Approach 2:
The patent converts the potential harm of thermal stress during fast charging into a beneficial control mechanism. By monitoring system power consumption and thermal conditions, the system uses available power headroom to enable fast charging when safe, and intentionally reduces charge rate when thermal limits approach, transforming thermal constraints into a guiding factor for optimized charging strategy that prevents damage while maximizing charging efficiency when conditions allow.
Data Source
AI summary
An information handling system may determine a battery charge rate to be applied to a battery backup unit, wherein the determining is based on a system power consumption and a system power limit. If the system power consumption is equivalent to an idle power limit then the battery charge rate applied to the battery backup unit is minimized, and if the system power consumption is between the idle power limit and the system power limit then the battery charge rate is maximized.