Dynamic Battery Charging Voltage for Capacity Fade Compensation
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Solution Overview
Problem
Existing battery systems face challenges in maintaining both burst power and backup reserves as battery capacity degrades over time, leading to insufficient energy reserves due to fixed charging voltages that cannot adapt to changing battery health.
Innovation Solution
A dynamic battery charging system that periodically checks the actual battery capacity or energy and adjusts the charging voltage from a preset level to a higher specification limit, ensuring sufficient capacity for both burst power and backup, thereby extending battery longevity and reducing the risk of insufficient energy reserves.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Duration of action of stationary object
If the battery is charged to a preset voltage (e.g., 4.1 V) to extend battery longevity, then battery life is improved, but the battery capacity becomes insufficient to support both burst power and backup reserve as battery degradation occurs over time
Solution Approach 1:
The patent implements dynamic voltage adjustment by periodically checking actual battery capacity and adjusting the charging voltage accordingly. The charging voltage transitions from a fixed preset value (e.g., 4.1V) to a dynamically adjusted value that can increase up to the specification limit (e.g., 4.2V) as battery degradation occurs, ensuring the battery maintains sufficient capacity for both burst power and backup reserve while extending its operational life
Solution Approach 2:
The patent changes the charging voltage parameter from a static preset value to a dynamic value that adapts to battery degradation. The system monitors battery capacity and adjusts the charging voltage within the range of 4.1V to 4.2V, optimizing the balance between battery longevity and capacity retention throughout the battery's operational lifecycle
2Stability of the object's composition
If the charging voltage is kept at a fixed preset level, then battery longevity is extended, but the system cannot adapt to changing battery health and maintain sufficient energy reserves
Solution Approach 1:
The patent implements a feedback mechanism that periodically checks the actual battery capacity and uses this information to adjust the charging voltage. The system monitors battery health status and feeds this information back to the charging control logic, which then adjusts the voltage within the 4.1V to 4.2V range to maintain optimal battery performance and sufficient energy reserves throughout the battery's lifecycle
Data Source
AI summary
A battery that periodically checks an actual battery capacity or energy with charge to a preset voltage (e.g., 4.1 V). The battery then decides the battery capacity or energy. If the capacity or energy is insufficient, then an apparatus in or associated with the battery slightly increases charging voltage to a point where the capacity is sufficient (e.g. from 4.1 V to 4.11 V). The process of periodically checking and slightly increasing charging voltage is performed until charging voltage reaches specification limit (e.g., 4.2 V). The scheme described herein has benefits such as battery longevity can be extended, risk of insufficient energy reserve can be reduced, burst power can be used as long as possible, and/or even higher burst power can be used.