Pinhole detection system of fuel cell

Abstract

The present invention features a pinhole detection system of a fuel cell that preferably includes a stage on which a fuel cell element unit is disposed to be detected, a drive portion that is configured to move the stage so as to rotate the fuel cell element unit, a X-ray source that is disposed at one side of the stage to apply X-ray to the fuel cell element unit that rotates, an image detector that detects X-ray penetrating the fuel cell element unit, and a computer tomography that reconstructs tormogram that is detected by the image detector to a three dimension. Preferably, the fuel cell element unit is rotated on the stage, X-ray is applied to the rotating unit to gain the tomogram thereof, and the tomogram is reconstructed to be a three-dimensional image through a computerized tomography (CT scanning) such that the pinhole formed within the unit can be effectively detected.

1 . A pinhole detection system of a fuel cell, comprising:
 a stage on which a fuel cell element unit is disposed to be detected;   a drive portion that is configured to move the stage so as to rotate the fuel cell element unit;   a X-ray source that is disposed at one side of the stage to apply X-ray to the fuel cell element unit that rotates;   an image detector that detects X-ray penetrating the fuel cell element unit; and   a computer tomography that reconstructs tormogram that is detected by the image detector to a three dimension.   
     
     
         2 . The pinhole detection system of  claim 1 , further comprising a condense lens that is disposed between the fuel cell element unit and the X-ray source, through which X-ray penetrates. 
     
     
         3 . The pinhole detection system of  claim 1 , further comprising a filter that is disposed between the fuel cell element unit and the X-ray source, through which X-ray penetrates. 
     
     
         4 . The pinhole detection system of  claim 1 , further comprising a zone plate that is disposed between the fuel cell element unit and the X-ray source, through which X-ray penetrates. 
     
     
         5 . The pinhole detection system of  claim 1 , wherein a minimum focus of the X-ray source ranges from 0.1 to 10 μm, a capacity thereof ranges from 2 to 160 kV, a target thereof includes Rh, Cr, Cu, or W, and a resolution of the image detection portion is lower than 1 μm, and a magnification thereof ranges from 2000 to 15000. 
     
     
         6 . The pinhole detection system of  claim 1 , wherein a vacuum rate inside a discharge pipe of the X-ray source is below 10 −7  torr. 
     
     
         7 . The pinhole detection system of  claim 1 , wherein a beryllium window is used, in a case that an output capacity of the X-ray source is under 60 kV. 
     
     
         8 . A pinhole detection system of a fuel cell, comprising:
 a stage on which a fuel cell element unit is disposed;   a drive portion that is configured to move the stage;   a X-ray source that applies X-ray to the fuel cell element unit;   an image detector that detects X-ray penetrating the fuel cell element unit; and   a computer tomography unit.   
     
     
         9 . The pinhole detection system of a fuel cell of  claim 8 , wherein the drive portion is configured to move the stage so as to rotate the fuel cell element unit. 
     
     
         10 . The pinhole detection system of a fuel cell of  claim 8 , wherein the X-ray source is disposed at one side of the stage to apply X-ray to the fuel cell element unit. 
     
     
         11 . The pinhole detection system of a fuel cell of  claim 8 , wherein the computer tomography unit reconstructs a tormogram that is detected by the image detector to a three dimensional image.