Dynamic Supplementary Charging Voltage Control for Battery Life Extension
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Solution Overview
Problem
Wearable electronic devices experience rapid battery deterioration due to continuous supplementary charging, leading to reduced battery life, as they often remain connected to charging devices for extended periods, especially when not in use.
Innovation Solution
Implementing a method in electronic devices that includes a processor to determine connection to a charging device, user usage patterns, and device movement, reducing the voltage for supplementary charging to a lower level when the device is not in use, thereby minimizing battery degradation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the charging circuit continuously performs supplementary charging to maintain fully charged state, then the battery charge level is maintained, but the battery deteriorates faster
Solution Approach 1:
The patent changes the voltage parameter for initiating supplementary charging from a fixed threshold to a dynamic threshold that varies based on battery charge level ranges. Specifically, it uses different voltage thresholds (e.g., first voltage threshold for 20-80% charge range, second voltage threshold for other ranges) to control when supplementary charging starts and stops, thereby reducing unnecessary charging cycles and extending battery life while maintaining adequate charge levels.
2Quantity of substance
If the battery capacity is small, then the device size is reduced, but the natural discharge rate increases leading to more frequent supplementary charging
Solution Approach 1:
The patent implements dynamic voltage threshold adjustment based on the battery's charge level ranges. For small-capacity batteries experiencing high natural discharge rates, this approach allows the system to adaptively set appropriate charging thresholds rather than using fixed values, optimizing the balance between maintaining charge and minimizing charging frequency.
Solution Approach 2:
The patent introduces dynamic control of supplementary charging parameters based on real-time battery state monitoring. The charging voltage thresholds are adjusted dynamically according to the current charge level range, enabling the system to respond to changing battery conditions and discharge rates, thereby optimizing charging behavior for small-capacity batteries.
3Reliability
If the voltage threshold for supplementary charging is lowered, then the battery remains fully charged longer, but the battery undergoes more charging cycles causing deterioration
Solution Approach 1:
The patent divides the battery charge level into multiple ranges (e.g., 20-80% and other ranges) and applies different voltage thresholds for each range. This prevents unnecessary supplementary charging in the 20-80% range where the battery is most stable, while still maintaining adequate charge levels. The approach reduces the number of charging cycles and extends battery lifespan without compromising charge maintenance in critical ranges.
Data Source
AI summary
Disclosed is an electronic device. The electronic device includes a battery, a charging part configured to be connectable to an external charging device to charge the battery, a memory, and a processor operatively connected to the charging part and the memory. The processor may determine whether the charging part is connected to the external charging device, determine whether the electronic device moves and/or electronic device usage time information of a user, and reduce a voltage at which the battery enters supplementary charging to a second voltage lower than a first voltage which corresponds to a value stored in the memory, based on whether the electronic device moves and/or the electronic device usage time information. In addition, it is possible to implement various other embodiments understood through the disclosure.