Battery Charging Time Estimation via Stage Segmentation
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Solution Overview
Problem
Current methods for estimating battery charging time are inaccurate as they do not consider changes in the battery charging process, leading to poor accuracy in determining the required charging time.
Innovation Solution
A method that acquires the charging state type and determines the charging stage, which includes constant current and constant voltage stages, to calculate the charging time length based on these factors, improving accuracy by distinguishing different charging scenarios.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If the charging time is estimated by dividing the difference between total electric quantity and remaining electric quantity by charging current (t=(Qmax−Q1)/I), then the calculation is simple, but the accuracy is poor because it does not consider changes in the battery charging process
Solution Approach 1:
The charging process is divided into multiple stages (constant current charging stage and constant voltage charging stage) based on the charging state type. By segmenting the charging process, the system can apply different calculation methods for each stage, significantly improving the accuracy of charging time estimation while managing complexity through structured classification
Solution Approach 2:
The system dynamically identifies the current charging stage type (constant current or constant voltage) and adjusts the estimation approach accordingly. This dynamic adaptation allows the system to account for changes in charging characteristics during the process, improving accuracy without requiring a completely complex static system
2Measurement precision
If the charging time estimation method considers different charging stages (constant current and constant voltage), then the accuracy is improved, but the calculation complexity increases
Solution Approach 1:
The system performs preliminary identification of the charging state type before conducting the charging time estimation. By determining whether the battery is in constant current or constant voltage charging stage in advance, the system prepares the appropriate calculation methodology, improving accuracy while managing complexity through pre-planned approach selection
Solution Approach 2:
The system continuously monitors charging parameters to identify the current charging stage type and uses this feedback information to adjust the estimation calculation. This feedback mechanism ensures accurate tracking of charging progression through distinct stages while maintaining a manageable system through responsive adaptation
Data Source
AI summary
The present disclosure relates to a method for determining a charging time length of a battery, applied to an electronic device, including: acquiring a current charging state type of the battery in response to detecting that the battery of the electronic device enters a charging state; determining a charging stage of the battery, wherein the charging stage includes a constant current charging stage and a constant voltage charging stage; and determining the charging time length required by the battery according to the charging state type and the charging stage.