Sizector ® 3D camera solves the problem of power lithium battery weld detection
As the source of power of new energy vehicles, the safety and stability of power lithium battery is related to the user's driving experience and life safety. The defect detection efficiency of key parts determines the production efficiency of battery manufacturers and the service life of power battery products. Today, let's look at sizer ® The application of 3D camera in the welding seam detection of the liquid injection port of power battery.
In order to ensure the sealing of power lithium battery, the conventional method is to inject the electrolyte into the battery module through the injection hole, then install the sealing pin, and then fill the gap between the sealing pin and the lithium battery shell by welding. The raw materials, production process and technology of power lithium battery production determine that its production environment is easily polluted, and welding quality problems such as porosity, spatter and other surface defects will appear due to environmental pollutants and technology.
Power lithium battery weld detection is very important, but the current visual inspection scheme has high rate of missing and false detection. Customers hope that through 3D vision technology, they can effectively distinguish whether the weld has burst point, missed welding or weld through, so as to avoid quality problems caused by electrolyte leakage.The welding seam is usually made of highly reflective metal, which is difficult to photograph, while the weld defects are usually very small and difficult to distinguish with naked eyes.
Imaging Results
The high quality 3D spot cloud chart can clearly capture the weld defects of the sealing pin at the liquid injection port of the power cell——一a needle hole like weld penetration (as shown below).
weld defect-zoom up
By Sizector ® 16.2 megapixel 3D camera (standard 3D mode, 2 exposures)由Sizector®1620万）
04
Summary
The 16.2 million pixel Sizector ® 3D camera can solve the plane detection and measurement problems that the previous generation of products are not good at. Based on the high-resolution 3D camera, visual users can integrate the currently commonly used 2D + 3D camera mode into a one-stop fusion detection scheme, which has simpler algorithm and faster detection beat, so as to improve the quality of the visual detection scheme and further improve the production detection efficiency.
