Visual Inspection of Battery Box Gluing With Reciprocating Imaging
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Solution Overview
Problem
Existing inspection methods for large-surface gluing on battery module lower box bodies are inadequate, as line array laser sensors can only inspect small cross-sectional adhesive strips, leading to oversight and inadequate quality control.
Innovation Solution
A visual inspection apparatus with an image acquisition apparatus, drive apparatus, and controller, enabling the apparatus to reciprocate and acquire macroscopic images of the entire gluing region, supplemented by multiple light sources for improved imaging and reflection management.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If line array laser sensor scanning is used during gluing, then inspection can be performed in real-time, but the inspection is limited to small cross-sectional adhesive strips and cannot satisfy large-surface gluing inspection requirements
Solution Approach 1:
The large-surface gluing region is divided into multiple overlapping sub-regions, each captured by the image acquisition apparatus at different positions. The apparatus moves to multiple predetermined positions to capture images of different sub-regions, which are then combined to form a complete inspection image of the entire large-surface gluing area.
2Loss of information
If image acquisition apparatus moves to capture entire gluing region, then macroscopic observation of overall gluing conditions is achieved, but device complexity increases due to drive apparatus and coordination requirements
Solution Approach 1:
The controller receives image information from the image acquisition apparatus and determines whether the gluing quality meets requirements. The system automatically coordinates the movement and image capture process, using feedback from the imaging system to control the inspection process and reduce manual intervention.
3Reliability
If multiple light sources with different emission angles are used, then reflection elimination and inspection accuracy are improved, but device complexity and cost increase
Solution Approach 1:
Different light sources are positioned at different locations and angles to provide localized illumination for different areas of the gluing region. Each light source is optimized for its specific position to eliminate reflections from particular surfaces, with the controller selectively activating appropriate light sources based on the inspection position.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
Enables comprehensive inspection for defects like bubbles and glue breakage, enhancing the accuracy and reliability of gluing quality assessment.
Implementation Method 1
The light source is disposed on one side of the image acquisition apparatus and electrically connected to the controller, and the light source is configured to emit light toward the gluing region
Data Source
AI summary
This application relates to the technical field of lower box body inspection, and in particular, discloses a visual inspection apparatus and an inspection method thereof, and an inspection system and an inspection method thereof. The visual inspection apparatus includes an image acquisition apparatus, a drive apparatus, and a controller. The drive apparatus is drivingly connected to the image acquisition apparatus for driving the image acquisition apparatus to reciprocate in a length direction of a gluing region of a lower box body and acquire an inspection image of the entire gluing region. The controller is electrically connected to the image acquisition apparatus and the drive apparatus to control the acquisition of the image acquisition apparatus and the operation of the drive apparatus.