Battery Pre-Charging Circuit for Over-Discharge Recovery
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Battery capacity is reduced due to over-discharging, leading to a loss in effective energy storage and shorter battery life, especially in emergency situations where devices need to be powered beyond standby mode.
Innovation Solution
A fuel gauge circuit operates with a charger to perform a pre-charging operation based on measured state of charge and internal resistance of the battery, restoring lost capacity by charging at a rate lower than normal to recover from over-discharge conditions.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If the battery is forced to operate beyond standby mode in emergency situations, then the electronic device can remain operational, but the battery may over-discharge and lose capacity
Solution Approach 1:
The system performs preliminary detection of over-discharge conditions and initiates a recovery charging sequence before the battery is fully depleted. The fuel gauge circuit monitors battery parameters and triggers a recovery mode that charges the battery at a controlled rate to restore capacity lost during emergency operation, preventing permanent damage from deep discharge.
2Productivity
If the battery charges at normal rate, then charging time is reduced, but the battery may not properly recover from over-discharge conditions
Solution Approach 1:
The charging system dynamically adjusts the charging rate based on the battery's state of charge and recovery needs. During the recovery phase from over-discharge, the system uses a lower charging current to safely restore capacity. Once the battery reaches a threshold charge level, the system transitions to normal fast charging, optimizing both recovery effectiveness and charging speed throughout the process.
Data Source
AI summary
Various embodiments of the present technology may provide methods and apparatus for a battery. The apparatus may provide a fuel gauge circuit that operates in conjunction with a charger to perform a pre-charging operation of the battery in the event the battery has experienced an over-discharge. The pre-charging operation is defined by a period of time selected according to a measured state of charge and/or an internal resistance of the battery.