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X-ray inspection device of battery

An inspection device, X-ray technology, applied in the direction of material analysis using radiation, etc., can solve problems such as winding deviation, and achieve the effect of preventing failures such as fire

Active Publication Date: 2018-06-05
SHIMADZU CORP
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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 of battery

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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

The present invention provides an X-ray inspection device of a battery which can accurately inspect positional deviation of an electrode plate. The X-ray inspection device of the battery of the present invention includes an electrode outline extraction portion (21) that extracts outlines indicating positions of a positive electrode plate and a negative electrode plate of an X-ray transmission image; and a baseline setting portion (22) setting a baseline B, wherein the baseline is oriented in a direction transverse to the outlines at a position where the extracted outlines are separated from each other by diaphragms; a first search area setting portion (23) that sets a first search area, wherein the first search area has a position between adjacent outlines on the baseline B as a starting point, and a linear area line extending along a length direction of the contour line as a boundary, and is narrow with respect to the outlines; and a first top extracting portion (26) that extracts thetop ends of the outlines that are continuous from the baseline in the first search area set by the outlines to be inspected.

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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IPC IPC(8): G01N23/04
CPCG01N23/04
Inventor 增田二朗小山康夫
Owner SHIMADZU CORP