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X-ray inspection device for batteries

An inspection device, X-ray technology, applied in measurement devices, material analysis using radiation, material analysis using wave/particle radiation, etc., can solve problems such as winding offset, and achieve the effect of preventing failures such as fire

Active Publication Date: 2021-03-30
SHIMADZU SEISAKUSHO CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the distance between the top ends of the positive electrode plate and the negative electrode plate (the distance between the side edges), that is, the height difference dimension deviates from the designed Value

Method used

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  • X-ray inspection device for batteries
  • X-ray inspection device for batteries
  • X-ray inspection device for batteries

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Experimental program
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Embodiment Construction

[0035] Hereinafter, the configuration of an X-ray inspection apparatus according to an embodiment of the present invention will be described.

[0036] Such as figure 1As shown, the X-ray inspection apparatus A includes: an X-ray tube 1 (X-ray source), which irradiates an X-ray beam 1a; X-ray detection; and a table 3, which is arranged between the X-ray tube 1 and the X-ray detector 2, on which the lithium-ion battery 4 is placed, and has a movement mechanism (not shown) that moves in the three-axis direction.

[0037] Such as figure 2 Shown, the lithium-ion battery 4 that is checked in the present embodiment is to be used in the battery of thin cuboid shape such as mobile phone, between positive electrode plate 5 and negative electrode plate 6, separator ( figure 2 (omitted in ) and is housed in a thin rectangular parallelepiped case 7 together with an electrolytic solution in a state of being wound in multiple layers. Then, the lithium ion battery 4 is placed on the table...

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PUM

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Abstract

PROBLEM TO BE SOLVED: To provide a battery X-ray inspection device capable of accurately inspecting the positional deviation of an electrode plate.SOLUTION: A battery X-ray inspection device comprises: an electrode contour extraction part 21 for extracting respective contours showing positions of positive and negative electrode plates in an X-ray transmission image; a baseline setting part 22 for setting a baseline B in a direction traversing each contour at positions having the extracted contours separated to sandwich a separator; a first search area setting part 23 for setting a narrow first search area to each contour using a position between the contours adjacent on the baseline B as a starting point and using a linear division line extending along the longitudinal direction of the contour as a boundary; and a first tip extraction part 26 for extracting the tip of the contour continuous from the baseline in the first search area set to a contour to be inspected.SELECTED DRAWING: Figure 1

Description

technical field [0001] The present invention relates to an X-ray inspection device for inspecting the inside of a battery, and in particular to a positive electrode plate and a negative electrode plate in a battery having a structure in which a separator is wound between a strip-shaped positive electrode plate and a negative electrode plate such as a lithium battery. An X-ray inspection device that checks the displacement of electrode plates. Background technique [0002] Lithium batteries used as power sources such as mobile phones use carbonaceous materials that can store and release lithium for the negative electrode plate, and LiCoO 2 A composite oxide of a transition metal such as lithium and lithium is used for the positive electrode plate, and is housed in a case together with an electrolytic solution in a state where a separator is interposed between both electrodes and wound in multiple layers. [0003] In this lithium-ion battery, if the side edge of the wound str...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01N23/044
CPCG01N23/04
Inventor 增田二朗小山康夫
Owner SHIMADZU SEISAKUSHO CO LTD