AI-Based Battery Defect Detection Using CT Image Analysis

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Solution Overview

Problem

Existing battery inspection systems rely on traditional image processing, which can be inconsistent, inefficient, and inaccurate, especially when dealing with poor-quality images or different types of batteries.

Innovation Solution

The implementation of an intelligent defect recognition system utilizing AI models that can identify, classify, localize, and quantify battery defects from CT images, including the use of AI-based image denoising and upscaling filters to handle low-quality images.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Measurement precision

If traditional image processing is used for battery inspection, then the system is simpler to implement, but the inspection consistency and accuracy deteriorate

Engineering Contradiction:
Improveinspection accuracyVSAvoidsystem complexity
Core Design Contradiction:
Measurement precisionVSDevice complexity

Solution Approach 1:

The patent replaces traditional mechanical image processing systems with an AI-based inspection system. The AI model (neural network) automatically analyzes CT images to detect defects, replacing manual or rule-based processing. This substitution enables higher accuracy and consistency while handling complex image data that traditional methods struggle with, such as poor-quality images or subtle defects.

Inventive Principle:
Principle #28Mechanics substitution (Replace mechanical system)

Solution Approach 2:

The system changes the processing parameters by using deep learning models that can adapt to different image qualities and defect types. The AI model learns from training data and automatically adjusts its detection criteria, allowing it to maintain high accuracy across varying inspection conditions without requiring manual reconfiguration of processing parameters.

Inventive Principle:
Principle #35Parameter changes

2Productivity

If traditional image processing is used, then the system is less computationally intensive, but the inspection time and efficiency deteriorate

Engineering Contradiction:
Improveinspection efficiencyVSAvoidcomputational energy
Core Design Contradiction:
ProductivityVSUse of energy by moving object

Solution Approach 1:

The system performs preliminary action by pre-training AI models on extensive datasets of battery images before actual inspection. This pre-training enables the model to quickly and accurately detect defects during production without requiring intensive real-time computation. The heavy computational work is done beforehand during model training, not during inspection.

Inventive Principle:
Principle #10Preliminary action

Solution Approach 2:

The AI inspection system is self-service in that it automatically processes images without requiring manual intervention or complex post-processing steps. The model independently analyzes images, identifies defects, and provides results, eliminating the need for human operators to manually review each image or apply multiple processing algorithms sequentially.

Inventive Principle:
Principle #25Self-service

3Measurement precision

If traditional image processing is used, then the system is more robust to poor-quality images, but the detection accuracy for defects deteriorates

Engineering Contradiction:
Improvedefect detection accuracyVSAvoidimpact of poor-quality images
Core Design Contradiction:
Measurement precisionVSObject-affected harmful factors

Solution Approach 1:

The system uses feedback mechanisms where the AI model continuously learns from inspection results and adjusts its detection criteria. The model can identify patterns in poor-quality images and adapt its analysis to compensate for image degradation. This feedback loop enables the system to maintain high detection accuracy even when input images are of poor quality, as long as the model has been trained on similar conditions.

Inventive Principle:
Principle #23Feedback

Solution Approach 2:

The AI model performs preliminary learning from high-quality training images before inspecting actual battery images. During pre-training, the model learns to recognize defect patterns and understand image quality variations, enabling it to compensate for poor-quality images during production inspections. This preliminary education allows the model to maintain accuracy despite variations in image quality.

Inventive Principle:
Principle #10Preliminary action

Data Source

PatentUS12211191B2Automatic inspection using artificial intelligence models
Publication Date: 2025.01.28 BAKER HUGHES CO
  • US12211191B2 patent drawing
  • US12211191B2 patent drawing
  • US12211191B2 patent drawing

AI summary

An inspection method includes receiving a plurality of training images and an image of a target object obtained from inspection of the target object. The method further includes generating, by one or more training codes, a plurality of inference codes. The one or more training codes are configured to receive the plurality of training images as input and output the plurality of inference codes. The one or more training codes and the plurality of inference codes includes computer executable instructions. The method further includes selecting one or more inference codes from the plurality inference codes based on a user input and/or one or more characteristics of at least a portion of the received plurality of training images. The method also includes inspecting the received image using the one or more inference codes of the plurality of inference codes.