Battery Tab Position Inspection Using Dual Trigger Detection
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Solution Overview
Problem
Existing battery tab inspection methods lack accuracy in detecting position deviations and abnormalities, such as damage or folding, which can affect the quality and safety of battery electrodes.
Innovation Solution
A tab inspection method and apparatus that determines the actual and theoretical positions of the tab using two trigger manners, based on changes in electrode plate height and preset positions, respectively, to assess deviations and abnormalities through inspection data analysis.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If a single trigger manner is used to determine tab position, then the inspection method is simple, but the measurement precision is insufficient to accurately detect position deviations
Solution Approach 1:
The tab position detection is segmented into two independent trigger manners: first trigger manner uses electrode plate height changes to determine actual tab position, while the second trigger manner uses preset positions to determine theoretical tab position. By dividing the detection into multiple independent methods and comparing results, the patent achieves high measurement precision without requiring complex single-method systems
Solution Approach 2:
The patent introduces an intermediary comparison mechanism where the actual position (from first trigger) and theoretical position (from second trigger) are both determined separately and then compared against each other. This intermediary comparison step enables accurate deviation detection while maintaining relative simplicity in each individual detection method
2Reliability
If traditional inspection methods are used, then the inspection process is simple, but the ability to detect tab abnormalities such as damage or folding is insufficient
Solution Approach 1:
The patent extends detection from traditional single-dimension position checking to multi-dimensional inspection by analyzing height changes (first direction) and positional coordinates (second direction) simultaneously. This dimensional expansion enables the detection of abnormalities like damage or folding that would be invisible in single-dimension inspection, achieving high reliability without excessive complexity
Data Source
AI summary
The present application provides a tab inspection method. The method includes: determining a first start position of the tab in a second direction of the electrode plate according to a first trigger manner, where the second direction is perpendicular to the first direction; determining a second start position of the tab in the second direction of the electrode plate according to a second trigger manner; and determining, according to a distance between the second start position and the first start position, whether a position of the tab on the electrode plate deviates; where the first trigger manner is a manner for determining the start position of the tab based on a change of a height of the electrode plate in the first direction, and the second trigger manner is a manner for determining the start position of the tab based on a preset position of the tab on the electrode plate.