On-line rapid CT detection technology for laminated Li-ion battery
The demand for battery quality inspection methods in Li-ion battery industry is growing.A rapid computed tomography(CT)directional reconstruction technology is proposed to solve the problems of image occlusion and the inability to directly measure the coating amount in the x and y directions in the X-ray detection method of laminated battery.By positioning the slice position in two-dimensional(2D)and simultaneously reconstructing two slice images in the x and y directions of the three-dimensional(3D)voxel data,the cathode and anode vertices are positioned to achieve direct and accurate calculation of the coating amount.The misjudgment rate of the rapid CT detection equipment using the proposed method can be reduced by 2-3 percentage points compared with the traditional 2D detection equipment.