Non-destructive inspection method

Abstract

The purpose of the present invention is to simply and accurately set the positions on an object to be inspected which are identified in detection results of each of a plurality of different types of non-destructive inspection means, when inspecting the object to be inspected using the plurality of different types of non-destructive inspection means. When inspecting an object to be inspected usinga plurality of different types of non-destructive inspection means, common marks (m1, m2, m3) capable of being detected by any of the plurality of non-destructive inspection means are fixedly formed on the object (1) to be inspected, the object to be inspected including the marks is subsequently detected by each of the plurality of non-destructive inspection means, and the detection results from the plurality of non-destructive inspection means are compared using the marks as positional references.

Description

technical field [0001] The present invention relates to non-destructive inspection methods. Background technique [0002] There is a desire to use multiple non-destructive inspection units of different types to inspect the inspection object, for example, to inspect lithium-ion batteries by X-ray imaging devices (X-ray Talbot imaging devices, etc.) is "LIB"). By X-ray imaging, structural failures inside the LIB, the presence or absence of foreign objects, and their positions can be known. In addition, by measuring the magnetic field distribution, the current distribution inside the LIB can be visualized, and the magnitude of the leakage current and the location of the leakage can be known. [0003] In the actual inspection, it is not necessary to make a judgment based on each result alone, but to make a multi-faceted judgment by combining the detection results of both. For example, even if a foreign substance is found by X-ray imaging, it may be considered okay if it does ...

AI Technical Summary

Problems solved by technology

[0010] However, for inspection objects that are laminated and packaged like LIB, the shape characteristics are not stable, and there is a possibility that the shape changes from the previous inspection to the next inspection

In addition, in the invention described in Patent Document 1, there is an optical search by taking an image with a camera or the like before any inspection, and a process for specifying the position before the inspection is required, and the addition of a camera, etc. The problem of increasing the size of the device

Images