Battery Charging Profile Diagnosis With Range-Specific Current Control
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Solution Overview
Problem
Conventional battery diagnosis methods require slow charging speeds for the entire battery charging range, leading to low diagnosis speed and efficiency due to the need for precise analysis of the entire charging profile.
Innovation Solution
A battery diagnosing apparatus and method that charges the battery at a lower diagnosis speed only for a specific charging range requiring precise analysis, allowing for rapid and accurate diagnosis by analyzing the first peak of the charging profile within a predetermined safe area.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If charging is performed at a diagnosis charging speed for the entire battery charging range, then measurement precision of the charging profile is improved, but loss of time increases significantly
Solution Approach 1:
The battery charging range is divided into multiple segments: a first charging range where charging is performed at a first charging speed, and a second charging range where charging is performed at a second charging speed. This segmentation allows different charging speeds to be applied to different portions of the charging profile, improving diagnosis speed while maintaining necessary measurement precision in critical regions.
Solution Approach 2:
Different charging speeds are applied to different charging ranges based on their diagnostic importance. The first charging range (where the first peak occurs) uses a slower first charging speed to ensure precise measurement, while the second charging range uses a faster second charging speed to reduce overall diagnosis time. This local differentiation of charging quality optimizes the balance between precision and speed.
2Productivity
If charging is performed at a general charging speed for the entire battery charging range, then productivity is improved, but measurement precision deteriorates
Solution Approach 1:
The charging process is segmented into two distinct phases with different speeds. The first charging range uses a slower speed for precise measurement of critical features (first peak), while the second charging range uses a faster speed to maintain productivity. This segmentation enables the system to achieve both high productivity and adequate measurement precision by applying appropriate speeds to appropriate segments.
Solution Approach 2:
The charging speed parameter is changed based on the charging range. The system dynamically adjusts the charging speed from a first charging speed in the first charging range to a second charging speed in the second charging range. This parameter change allows the system to optimize both measurement precision and productivity by matching charging speed to the diagnostic requirements of each charging range.
Data Source
AI summary
A battery diagnosing apparatus includes a charged-state detector configured to detect a charged state of a battery, a charging current controller configured to vary a charging current for the battery when the charged state of the battery corresponds to a predetermined diagnosis charging range, and a battery diagnosing unit configured to analyze a charging profile generated during charging of the battery, thereby determining whether or not the battery is abnormal.