Battery Charging Mode Selection for Aging-Aware Fast Charging
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Solution Overview
Problem
The increasing power consumption and diversity of electronic devices lead to battery aging, with existing charging strategies exacerbating this issue, resulting in increased cell impedance and reduced available capacity.
Innovation Solution
A charging method that determines a target charging mode based on the number of charge-discharge cycles and application scenarios, selecting from multiple charging modes with varying rates to adapt to the battery's aging state and user demands.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Speed
If fast charging mode is used to improve charging speed, then charging rate increases, but battery aging accelerates and cycle life decreases
Solution Approach 1:
The patent applies dynamics by making the charging mode adjustable and switchable based on real-time battery state. The system dynamically transitions between first charging mode (lower rate, less damage) and second charging mode (higher rate, more damage) according to charge-discharge cycle count and application scenario, resolving the contradiction between charging speed and battery longevity
Solution Approach 2:
The patent changes the charging rate parameter based on battery aging state. By monitoring charge-discharge cycles and adjusting the charging rate parameter accordingly (lower for aged batteries, higher for new batteries), the system optimizes both charging efficiency and battery protection
2Productivity
If high charging rate is applied to reduce charging time, then productivity improves, but battery damage increases and available capacity reduces
Solution Approach 1:
The system dynamically adjusts charging rate based on battery health status and user needs. By switching between charging modes with different rates, the system achieves high productivity when appropriate while minimizing battery damage, avoiding the harmful effects of consistently high-rate charging
Solution Approach 2:
The patent modifies the charging rate parameter according to battery cycle count and scenario requirements. This parameter adaptation allows the system to maintain high charging efficiency when beneficial while reducing charging rate to prevent battery damage, directly addressing the contradiction between productivity and harmful effects
Data Source
AI summary
A charging method, including: obtaining the number of charge-discharge cycles of a battery and an application scenario during charging; determining a target charging mode among at least two charging modes according to the number of charge-discharge cycles and the application scenario, in which different charging modes have different charging rates, and the charging modes with different charging rates have different charging damages to the battery; and charging the battery in the target charging mode.