Dual Battery Role Switching Under Thermal and Wear Thresholds
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Solution Overview
Problem
Dual battery systems in information handling systems experience unbalanced wear levels and temperature-related degradation due to uneven charging and discharging cycles, leading to reduced battery life, as the primary battery is frequently discharged and charged more than the secondary battery, especially when operating temperatures exceed reliability thresholds.
Innovation Solution
An embedded controller dynamically switches the primary battery indicator between the primary and secondary batteries based on operating temperatures and wear levels, switching power supply when temperatures exceed reliability or pre-shutdown thresholds or when wear level differences become significant, to balance the usage and extend battery life.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If the primary battery is frequently discharged and charged to maintain power supply, then the system operates continuously, but the wear level of the primary battery increases significantly compared to the secondary battery
Solution Approach 1:
The patent implements dynamic switching between primary and secondary batteries based on real-time monitoring of charge capacities and wear levels. The embedded controller automatically designates which battery is primary and which is secondary, allowing the system to adaptively balance wear distribution while maintaining continuous operation.
Solution Approach 2:
The system periodically monitors charge capacities and wear levels of both batteries, switching roles between primary and secondary batteries at predetermined intervals or when specific thresholds are reached. This periodic switching ensures balanced wear distribution over time while maintaining uninterrupted power supply.
2Power
If the primary battery operates at high temperatures to meet power demands, then the system maintains performance, but the battery degradation accelerates due to exceeding reliability temperature thresholds
Solution Approach 1:
The embedded controller continuously monitors the temperature, charge capacity, and wear level of both batteries. Based on this feedback, the controller dynamically switches between batteries, preventing either battery from operating continuously at high temperatures and thereby reducing thermal degradation while maintaining power output.
Solution Approach 2:
The system changes operational parameters by switching between batteries based on temperature conditions. When one battery approaches dangerous temperature thresholds, the system transitions to the other battery, effectively managing thermal loads and preventing excessive degradation while maintaining required power levels.
3Productivity
If the embedded controller switches batteries based on charge capacity thresholds, then charging efficiency is optimized, but unbalanced wear levels develop between the two batteries
Solution Approach 1:
The patent implements dynamic role assignment where batteries can switch between primary and secondary designations based on real-time wear level comparisons. This dynamic approach ensures that the battery with lower wear becomes primary, balancing the distribution of charge/discharge cycles while maintaining efficient charging operations.
4Reliability
If the system monitors and switches batteries based on wear levels and temperatures, then battery life is extended, but the control system complexity increases
Solution Approach 1:
The embedded controller automatically monitors battery parameters, compares wear levels and temperatures, and switches battery roles without user intervention. This self-service approach extends battery life through intelligent management while keeping the user interface simple and the control logic contained within the controller.
Data Source
AI summary
A system and method for dynamically switching power supply in a dual battery system to minimize unbalanced wear levels in the primary and secondary batteries. If the operating temperature of the primary battery reaches a reliability temperature threshold but the operating temperature of the secondary battery is less than the reliability temperature threshold, the controller switches a primary battery indicator to designate the secondary battery as the primary battery. If the operating temperature of the primary battery reaches a pre-shutdown temperature but the operating temperature of the secondary battery is less than the pre-shutdown temperature, the controller switches a primary battery indicator to designate the secondary battery as the primary battery. If a difference between the wear levels of the batteries exceeds a wear level difference threshold, the controller switches a primary battery indicator to designate the secondary battery as the primary battery.