Leakage detection device and leakage detection method

A leak detection device, leak detection technology, applied in the measurement device, by detecting the appearance of fluid at the leak point, color/spectral characteristic measurement, etc., can solve the detection of high-precision and high-efficiency detection of content leakage of the object to be inspected, etc. question

Inactive Publication Date: 2006-10-04
KK TOSHIBA +1
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Problems solved by technology

[0005] However, in the above-mentioned spectroscopic analysis unit, since the object to be inspected is irradiated with a pulsed laser beam focused into a point shape, the fluorescence generated by the object to be inspected is subject...

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  • Leakage detection device and leakage detection method
  • Leakage detection device and leakage detection method
  • Leakage detection device and leakage detection method

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Embodiment Construction

[0030] Embodiment 1

[0031] Hereinafter, a leak detection device and a leak detection method according to a first embodiment of the present invention will be described in detail with reference to the drawings. First, the leak detection device will be described.

[0032] Such as figure 1 and Figure 4 As shown, the leak detection device 1 is an automatic leak detection device that detects the leakage of the content contained in the inspection object and inspects the inspection object. In this embodiment, the object to be inspected is a coin-type lithium (Li) ion battery, that is, a coin-type lithium battery 2 . The content is a liquid, that is, a lithium electrolyte solution 3 . Specifically, the leakage detection device 1 irradiates the coin-shaped lithium battery 2 with pulsed laser light L, the surface of the coin-shaped lithium battery 2 is plasma-formed, and the generated fluorescence F is collected, and it is inspected based on the wavelength and intensity of the flu...

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Abstract

This invention discloses a leakage detecting device and a method to detect leakage. Pulsed laser light L is condensed with a reductive condensing optical system 51, fairing it to a circular geometry corespondent to the geometry of a negative electrode face 23 the leakage of lithium electrolysis solution of a lithium coin cell 2 is be worried. The pulsed laser light L condensed to a circular geometry is irradiated to the central portion of negative electrode face 23 of the lithium coin cell 2. Leakage of lithium electrolysis solution from a lithium coin cell 2 is detectable with a high degree of accuracy, even if fluorescence F generated from emission by irradiation of pulsed laser light L might as well be determined from quantification with a discriminating device 67 after spectral analysis with a fluorescence spectrometer 65.

Description

technical field [0001] The present invention relates to a leak detection device for detecting leakage of content from an inspection object based on fluorescence generated by laser irradiation, and a leak detection method using the leak detection device. Background technique [0002] Generally, a coin-type lithium (Li) ion battery is known as a product in which contents are enclosed. When manufacturing a lithium ion battery, after the lithium electrolyte is accommodated in the battery body, the battery body is riveted with a gasket to seal the lithium electrolyte in the battery body. Then check the lithium-ion battery, whether the lithium electrolyte is leaking in the gasket part. [0003] Furthermore, as the leakage detection of the lithium electrolyte solution, the leakage of the lithium electrolyte solution is visually judged by many persons using a microscope or the like. However, when judging the leakage of the lithium electrolyte by visual inspection, various products...

Claims

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Application Information

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IPC IPC(8): G01M3/20
CPCG01M3/04G01M3/38G01N21/25G01N2021/393
Inventor 大谷良一
Owner KK TOSHIBA
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