Secondary Battery Charging Control for User-Defined Completion Time
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Secondary batteries deteriorate faster when maintained in a full-charge state for extended periods, leading to reduced lifespan, particularly when continuously charged and self-discharged without user intervention.
Innovation Solution
An apparatus and method that control the charging of secondary batteries by receiving user-set full-charge times, monitoring charging states, and adjusting current supply to complete charging at the desired full-charge time, preventing unnecessary cycling and deterioration.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the secondary battery is continuously charged and maintained in full-charge state, then the battery is always ready for use, but the deterioration of the secondary battery is accelerated and lifetime is shortened
Solution Approach 1:
The system calculates the time required to fully charge the battery in advance and compares it with the remaining time until the alarm time. Based on this preliminary calculation, the controller decides whether to start charging before the alarm time or delay charging until closer to the alarm time, preventing the battery from remaining in full-charge state for extended periods while ensuring it is charged and ready by the desired time.
2Productivity
If charging is started immediately when power source is coupled, then charging is completed quickly, but the battery may reach full-charge state too early and remain in that state causing deterioration
Solution Approach 1:
The charging control system dynamically adjusts the charging timing based on real-time conditions. The controller continuously monitors the battery charge level and compares the actual charging progress with the calculated time-to-full charge. This dynamic adjustment allows the system to optimize charging speed while preventing the battery from reaching full charge too early, thereby extending battery lifetime.
3Reliability
If the charging adapter is coupled for a long period to ensure full charge, then the battery is reliably charged, but the continuous full-charge and self-discharge cycling accelerates deterioration
Solution Approach 1:
The system implements feedback control by continuously monitoring the battery charge level and comparing it with the target full-charge time. The controller receives feedback about the current charging state and adjusts the charging current accordingly. When the battery reaches full charge at or near the alarm time, the controller stops charging, preventing unnecessary full-charge and self-discharge cycling that would accelerate deterioration.
Data Source
AI summary
There is provided a method and apparatus for controlling charging of a secondary battery. The apparatus includes a receiving unit, a sensing unit and a charging controller. The receiving unit receives a full-charge time of the secondary battery from a user terminal. The sensing unit monitors a charging state of the secondary battery. The charging controller controls charging of the secondary battery, using the full-charge time and the charging state. Accordingly, the charging of a secondary battery is controlled to be completed at a full-charge time desired by a user, thereby preventing deterioration of the secondary battery.