Multi-Angle Cell Imaging for Complete Battery Appearance Inspection
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Solution Overview
Problem
Existing photographing apparatuses fail to capture complete appearance images of lithium-ion battery cells, leading to low detection accuracy due to improper dimensions and Mylar film distribution, causing quality issues in cell production.
Innovation Solution
A cell photographing and conveying apparatus is developed, incorporating a manipulator, ultraviolet lamps, illumination lamps, cameras, and a conveying mechanism to ensure comprehensive image capture and mechanized handling, reducing labor intensity and improving efficiency.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If a single photographing apparatus is used, then the device complexity is low, but the image completeness is insufficient leading to low detection accuracy
Solution Approach 1:
The photographing system is divided into multiple independent photographing apparatuses, each equipped with its own illumination source. Multiple cameras capture images from different positions simultaneously, segmenting the detection task to achieve complete cell appearance imaging and high detection accuracy without requiring a single complex apparatus
Solution Approach 2:
The patent transitions from single-position photographing to multi-position simultaneous photographing by arranging cameras and illumination sources at different spatial locations. This dimensional expansion allows complete capture of cell appearance including top, bottom, and side surfaces, resolving the contradiction between simple device structure and complete imaging
2Productivity
If manual handling of cells is used, then the equipment complexity is low, but the labor intensity is high and efficiency is low
Solution Approach 1:
The conveying system is designed to automatically transport cells between workstations without manual intervention. The manipulator autonomously picks up cells and places them in containers, while the conveying mechanism automatically moves containers between stations, enabling the system to serve itself and achieve high productivity
Solution Approach 2:
Manual mechanical handling is replaced with automated manipulators and conveying mechanisms. The manipulator uses vacuum suction or grippers to handle cells, and the conveying system uses automated transport devices, substituting human labor with mechanical automation to improve efficiency while managing device complexity
3Measurement precision
If conventional illumination is used, then the energy consumption is low, but the image quality of Mylar film is insufficient
Solution Approach 1:
The patent employs ultraviolet illumination sources that cause the Mylar film to fluoresce or change color, making defects and features more visible. This color/fluorescence change technique dramatically improves image quality and defect detection capability, justifying the increased energy consumption of UV lamps compared to conventional illumination
Solution Approach 2:
The illumination wavelength parameter is changed from visible light to ultraviolet range. This parameter change enables the Mylar film to exhibit fluorescent properties, significantly enhancing image quality and detection accuracy. The energy consumption increase is acceptable given the substantial improvement in measurement precision
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
The apparatus enables accurate detection by capturing complete cell appearance images, enhancing judgment accuracy and automating the transfer and storage of qualified and defective cells, thereby improving production quality and efficiency.
Implementation Method 1
the at least two ultraviolet lamps are disposed respectively on the upper and lower sides of the detection workstation and are configured to emit ultraviolet light to the detection workstation
Implementation Method 2
the at least two illumination lamps are disposed respectively on the upper and lower sides of the detection workstation
Data Source
AI summary
The present invention discloses a cell photographing and conveying apparatus, including a cell feeding workstation, a detection workstation, a manipulator and an image acquisition device. The manipulator transfers a cell from the cell feeding workstation to the detection workstation. The image acquisition device includes ultraviolet lamps, illumination lamps, and cameras, where the ultraviolet lamps are used for emitting ultraviolet light to the detection workstation. By means of the cell photographing and conveying apparatus, a relatively complete appearance image of the cell can be acquired, thus ensuring detection accuracy.