WO2014148163A1 - Procédé de test et dispositif de test pour corps liés - Google Patents

Procédé de test et dispositif de test pour corps liés Download PDF

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Publication number
WO2014148163A1
WO2014148163A1 PCT/JP2014/053377 JP2014053377W WO2014148163A1 WO 2014148163 A1 WO2014148163 A1 WO 2014148163A1 JP 2014053377 W JP2014053377 W JP 2014053377W WO 2014148163 A1 WO2014148163 A1 WO 2014148163A1
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WO
WIPO (PCT)
Prior art keywords
inspection
separator
joined body
bonded
medium
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PCT/JP2014/053377
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English (en)
Japanese (ja)
Inventor
琢也 広瀬
鳥居　尚之
敬士 市原
Original Assignee
日産自動車株式会社
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Publication of WO2014148163A1 publication Critical patent/WO2014148163A1/fr

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    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
    • G01M3/00—Investigating fluid-tightness of structures
    • G01M3/02—Investigating fluid-tightness of structures by using fluid or vacuum
    • G01M3/04—Investigating fluid-tightness of structures by using fluid or vacuum by detecting the presence of fluid at the leakage point
    • G01M3/20—Investigating fluid-tightness of structures by using fluid or vacuum by detecting the presence of fluid at the leakage point using special tracer materials, e.g. dye, fluorescent material, radioactive material
    • G01M3/22—Investigating fluid-tightness of structures by using fluid or vacuum by detecting the presence of fluid at the leakage point using special tracer materials, e.g. dye, fluorescent material, radioactive material for pipes, cables or tubes; for pipe joints or seals; for valves; for welds; for containers, e.g. radiators
    • G01M3/225—Investigating fluid-tightness of structures by using fluid or vacuum by detecting the presence of fluid at the leakage point using special tracer materials, e.g. dye, fluorescent material, radioactive material for pipes, cables or tubes; for pipe joints or seals; for valves; for welds; for containers, e.g. radiators for welds

Definitions

  • the present invention relates to an inspection method for a bonded body and an inspection apparatus that embodies the inspection method.
  • a fuel cell is configured by alternately laminating separators and membrane electrode assemblies.
  • the separator may be configured as a separator pair (corresponding to a joined body) in which an anode side separator (corresponding to a first member) and a cathode side separator (corresponding to a second member) are joined.
  • the medium may leak through the joint failure portion.
  • a thin test specimen in which helium gas as an inspection medium is injected is housed in a chamber, and helium gas leaking from a poorly joined portion of the thin specimen is detected by a helium leak detector connected to the chamber.
  • a method for example, refer to Patent Document 1.
  • Patent Document 1 In the configuration of Patent Document 1 described above, even when the outer periphery of the thin object test body is kept at a fine vacuum pressure when detecting helium gas leaking from the thin object test object, the thin object test is caused by the fine vacuum pressure. There was a possibility that the body was pulled outward and deformation of the thin specimen could not be sufficiently suppressed.
  • the present invention has been made to solve the above-described problems, and deforms the joined body to determine whether or not the joined body obtained by joining at least the first member and the second member each having a thin plate shape is joined. It is an object of the present invention to provide an inspection method for a bonded body that can be inspected without any problem, and an inspection device that embodies the inspection method.
  • the joining quality of the joined body in which at least the first member and the second member each having a thin plate shape are joined is inspected.
  • the joined body used in this inspection method includes a first joint portion in which the outer peripheral edges of the first member and the second member are joined in an annular shape, and a part of the first member and the second member that is inward of the outer peripheral edge.
  • This inspection method has an accommodation process, an injection process, and a detection process. In the accommodation step, the joined body is held and accommodated in the accommodation space. In the injection step, an inspection medium for inspection is injected into the accommodation space.
  • the detection step is connected to the accommodation space, and the first inspection medium that flows out of the opening through the space from the poorly bonded portion of the first bonded portion of the bonded body, and the bonded body. And the second inspection medium that has passed through the poorly joined portion of the second joint.
  • the joined body inspection apparatus that achieves the above object inspects whether or not the joined body is formed by joining at least the first member and the second member each having a thin plate shape.
  • the joined body used in the present inspection apparatus includes a first joining portion obtained by annularly joining the outer peripheral edges of the first member and the second member, and a part of the first member and the second member that is inward of the outer peripheral edge.
  • a second joint portion joined together and an opening facing outward from a space provided between the first member and the second member.
  • This inspection device has a storage part, an injection part, and a detection part.
  • the storage portion stores the joined body in the storage space portion.
  • the injection part injects an inspection medium for inspection into the accommodation space.
  • the detection unit is connected to the housing space, and the first inspection medium that has flowed out of the opening through the space from the poorly bonded portion of the first bonded portion of the bonded body, and the bonded body. And the second inspection medium that has passed through the poorly joined portion of the second joint.
  • FIG. 2 is a perspective view showing a state where an upper mold and a lower mold are separated from each other and a separator pair to be inspected is disposed between the upper mold and the lower mold in the main part of the inspection apparatus shown in FIG. 1.
  • FIG. 3 is a perspective view showing a state in which the sealing member is removed from the upper mold and moved downward and the sealing member is removed from the lower mold and moved upward in the main part of the inspection apparatus shown in FIG. 2. It is a perspective view which shows the principal part of the inspection apparatus shown in FIG. 3, and a separator pair from the downward direction. It is sectional drawing which shows an inspection apparatus etc.
  • FIG. 6 is a perspective view showing a sealing portion using the sealing members 41 to 46 with respect to the separator pair 100.
  • FIG. 7 is a top view showing a main part of the separator pair 100.
  • FIG. 8 is a cross-sectional view showing the main part of the separator pair 100 shown in FIG. 7 from the side.
  • FIG. 8A is a cross-sectional view showing the main part of the separator pair 100 along the line C-C ′ of FIG. 7.
  • FIG. 8B is a cross-sectional view showing the main part of the separator pair 100 along the line D-D ′ of FIG. 7.
  • the joined body corresponds to, for example, a separator pair 100 that is one form of a metal separator for a fuel cell.
  • the separator pair 100 is configured by joining an anode side separator 101 corresponding to a first member and a cathode side separator 102 corresponding to a second member.
  • the anode side separator 101 and the cathode side separator 102 each have a thin plate shape.
  • the separator pair 100 includes through holes corresponding to the cathode gas supply port 100a, the cooling water supply port 100b, and the anode gas supply port 100c at one end in the longitudinal direction.
  • the separator pair 100 includes through holes corresponding to the anode gas outlet 100d, the cooling water outlet 100e, and the cathode gas outlet 100f at the other end in the longitudinal direction.
  • the separator pair 100 includes a first joint 100g in which the outer peripheral edges of the anode-side separator 101 and the cathode-side separator 102 are annularly joined.
  • the separator pair 100 includes a second joint portion 100m that is inward of the outer peripheral edge and in which the anode side separator 101 and the cathode side separator 102 are partially joined.
  • the second joint portion 100m is provided at the central portion of the anode-side separator 101 and the cathode-side separator 102 that are formed in a concavo-convex shape corresponding to the active area.
  • the second joint portion 100m includes, for example, four locations in the central portion of the separator pair 100 in a state of being separated from each other along the longitudinal direction of the separator pair 100.
  • the separator pair 100 includes a space portion 100u between the anode side separator 101 and the cathode side separator 102 as shown in FIG.
  • the space portion 100u communicates with the cooling water supply port 100b and the cooling water discharge port 100e and allows cooling water to flow.
  • the cathode gas supply port 100a, the anode gas supply port 100c, the anode gas discharge port 100d, and the cathode gas discharge port 100f of the separator pair 100 are connected to third joints 100h, 100i, 100j in which their outer peripheral edges are joined in an annular shape. And 100k.
  • the first joint 100g, the second joint 100m, and the third joints 100h to 100k of the separator pair 100 are each formed by laser welding.
  • FIG. 1 is a perspective view schematically showing the inspection apparatus 1.
  • FIG. 2 shows the main part of the inspection apparatus 1 shown in FIG. 1 in which the upper mold 11 and the lower mold 12 are separated from each other, and a separator pair 100 to be inspected is disposed between the upper mold 11 and the lower mold 12.
  • FIG. 3 shows the main part of the inspection apparatus 1 shown in FIG. 2, in which the sealing members 41 and 42 are removed from the upper mold 11 and moved downward, and the sealing members 43 to 45 are removed from the lower mold 12 and moved upward. It is a perspective view which shows the state moved to.
  • FIG. 4 is a perspective view showing the main part of the inspection apparatus 1 and the separator pair 100 shown in FIG. 3 from below.
  • FIG. 5 is a cross-sectional view showing the inspection apparatus 1 and the like.
  • FIG. 5A is a sectional view showing the inspection apparatus 1 from the side surface along the line A-A ′ of FIG. 1, and illustrates the separator pair 100.
  • FIG. 5B is a sectional view showing the inspection apparatus 1 from the side along the line B-B ′ in FIG. 2, and the separator pair 100 is not shown.
  • FIG. 6 is a perspective view showing a sealing portion using the sealing members 41 to 46 for the separator pair 100.
  • the inspection apparatus 1 inspects whether or not a joined body (separator pair 100) is joined by joining at least a first member (anode-side separator 101) and a second member (cathode-side separator 102) each having a thin plate shape.
  • the inspection device 1 includes a storage unit 10, an injection unit 20, a detection unit 30, a sealing unit 40, and a suction unit 50.
  • each structure of the inspection apparatus 1 is demonstrated in order.
  • the accommodating part 10 accommodates the separator pair 100 by holding it in the accommodating space part 10s, for example, as shown in FIG.
  • the accommodating portion 10 includes an upper mold 11, a lower mold 12, and a sealing member 13.
  • the upper mold 11 is made of metal and is formed in a rectangular shape.
  • the upper mold 11 includes a contact portion 11a that contacts the sealing member 13 along the outer peripheral edge of the lower portion.
  • a shallow concave portion having a constant depth is provided inside the contact portion 11a of the upper mold 11.
  • a through hole 11c is provided at the center of the inner surface 11b of the concave portion. The through hole 11c communicates with a pipe 22 of the injection unit 20 described later.
  • An annular groove 11 f is provided at one end in the longitudinal direction of the inner surface 11 b of the upper mold 11.
  • the annular groove 11 f press-fits a sealing member 42 of the sealing portion 40 described later, and seals the cooling water discharge port 100 e from the anode side separator 101 of the separator pair 100.
  • An annular groove 11e is provided at the other end in the longitudinal direction of the inner surface 11b.
  • the annular groove 11 e press-fits a sealing member 41 of the sealing unit 40 described later, and seals the cooling water supply port 100 b from the anode side separator 101 of the separator pair 100.
  • the lower mold 12 is made of metal and has a rectangular shape.
  • the lower mold 12 joins the sealing member 13 to the upper outer peripheral edge.
  • the upper part of the lower mold 12 is provided with a concave portion that is shallow at a constant depth inward of the portion where the sealing member 13 is joined.
  • a through hole 12c is provided at the center of the inner surface 12b of the concave portion.
  • the through hole 12c communicates with a second pipe 34 of the detection unit 30 described later.
  • a through hole 12d is provided at one end of the inner surface 12b in the longitudinal direction.
  • the through hole 12d communicates with a first pipe 32 of the detection unit 30 described later.
  • An annular groove 12f is provided so as to surround the through hole 12d of the lower mold 12.
  • the annular groove 12f press-fits a sealing member 44 of the sealing portion 40 described later, and seals the cooling water discharge port 100e from the cathode side separator 102 of the separator pair 100.
  • an annular groove 12e is provided at the other end in the longitudinal direction of the inner surface 12b.
  • the annular groove 12e press-fits a sealing member 43 of the sealing unit 40 described later, and seals the cooling water supply port 100b from the cathode side separator 102 of the separator pair 100.
  • An annular groove 12g is provided inside the outer peripheral edge of the inner surface 12b and along the outer peripheral edge.
  • the annular groove 12g press-fits a sealing member 45 of the sealing unit 40 described later, and seals the inner side of the first joint 100g of the cathode-side separator 102 of the separator pair 100.
  • the annular groove 12h press-fits a sealing member 46 of the sealing portion 40 described later, and at the cathode gas supply port 100a, the anode gas supply port 100c, the anode gas discharge port 100d, and the cathode gas discharge port 100f of the separator pair 100, The inside of each joint is sealed.
  • the sealing member 13 is a member for sealing the upper mold 11 and the lower mold 12.
  • the sealing member 13 is made of rubber, for example, and is formed in a frame shape corresponding to the contact portion 11a of the upper mold 11. As shown in FIG. 5B, the sealing member 13 is disposed so as to be joined to the lower mold 12. The contact portion 13a at the top of the sealing member 13 is in close contact with the contact portion 11a of the upper mold 11 so as to be separable.
  • the injection unit 20 injects an inspection medium for inspection into the storage space 10 s of the storage unit 10.
  • the injection unit 20 includes a cylinder 21 and a pipe 22.
  • the cylinder 21 is filled with an inspection medium.
  • helium gas is used as the inspection medium.
  • the inspection medium in the cylinder 21 is injected into the accommodation space portion 10 s of the accommodation portion 10 through the pipe 22.
  • the pipe 22 communicates with the through hole 11 c of the upper mold 11.
  • the pipe 22 is provided with a pressure adjusting valve (not shown) to control the pressure in the accommodating space 10s. Details of the method of injecting the inspection medium in the injection unit 20 will be described later with reference to FIGS.
  • the detection unit 30 is connected to the accommodation space 10s of the accommodation unit 10 and detects the inspection medium injected from the injection unit 20, for example, as shown in FIG.
  • the detection unit 30 passes through the first pipe 32 communicating with the through hole 12d of the lower mold 12 as shown in FIGS.
  • the first detector 31 detects the inspection medium.
  • the detection unit 30 has a second pipe 34 that communicates with the through hole 12c of the lower mold 12 as shown in FIGS. Then, the second detector 33 detects the inspection medium.
  • the 1st detector 31 and the 2nd detector 33 are prepared according to the kind of inspection medium inject
  • the inspection medium is helium
  • one detector may be connected to the first pipe 32 and the second pipe 34, respectively.
  • the sealing unit 40 holds the separator pair 100 in a state of being sealed in the accommodating space 10 s of the accommodating unit 10.
  • the flexible sealing part 40 accommodates the separator pair 100 in the accommodating part 10 without applying an excessive load to the separator pair 100.
  • the sealing part 40 includes, for example, sealing members 41 to 46 made of a rubber member having elasticity and formed in an annular shape.
  • the sealing members 41 to 46 correspond to so-called endless O-rings.
  • the sealing members 41 to 46 have a rectangular or elliptical cross-sectional shape in order to disperse stress by surface contact with the separator pair 100 and to improve the adhesion to the separator pair 100.
  • the sealing member 41 is used in close contact with the outer periphery of the cooling water supply port 100b from the anode side separator 101 side of the separator pair 100 as shown in FIGS. 4 and 6A.
  • the sealing member 42 is used in close contact with the outer periphery of the cooling water discharge port 100e from the anode side separator 101 side of the separator pair 100.
  • the sealing members 41 and 42 are press-fitted into annular grooves 11e and 11f provided on the inner surface 11b of the upper mold 11, respectively.
  • the sealing member 43 is used in close contact with the outer periphery of the cooling water supply port 100b from the cathode-side separator 102 side of the separator pair 100, as shown in FIGS. 4 and 6B.
  • the sealing member 44 is used in close contact with the outer periphery of the cooling water discharge port 100e from the cathode side separator 102 side of the separator pair 100.
  • the sealing member 45 is used in close contact with the inner side of the first joint 100g of the cathode-side separator 102 of the separator pair 100.
  • the sealing member 46 is used in close contact with the inside of each joint at the cathode gas supply port 100a, the anode gas supply port 100c, the anode gas discharge port 100d, and the cathode gas discharge port 100f of the separator pair 100.
  • the sealing members 43, 44, 45, and 46 are press-fitted into annular grooves 12 e, 12 f, 12 g, and 12 h provided on the inner surface 12 b of the lower mold 12, respectively.
  • the suction part 50 sucks the medium in the accommodation space part 10s, for example, as shown in FIG.
  • the suction unit 50 includes vacuum pumps 51 and 52.
  • the vacuum pump 51 is connected to the other branched one of the first pipes 32 provided for the first detector 31.
  • the vacuum pump 52 is connected to the other branched second pipe 34 provided for the second detector 33.
  • One vacuum pump may be connected to the first pipe 32 and the second pipe 34 without using the two vacuum pumps 51 and 52, respectively.
  • a vacuum pump having a specification capable of reducing pressure, for example, about several kPa to several tens kPa is used.
  • FIG. 9 is a flowchart showing the operation of inspecting the internal leakage and the through-hole leakage of the separator pair 100 using the inspection apparatus 1.
  • FIG. 10 is a diagram illustrating a state in which the internal leakage of the separator pair 100 is inspected using the inspection device 1.
  • FIG. 10A is a cross-sectional view showing the inspection apparatus 1 and the separator pair 100 from the side. In FIG. 10A, in order to represent the flow paths of the first inspection media L1, L2, and L3, the separator pair 100 is shown by overlapping different cross sections.
  • FIG. 10B is a perspective view schematically showing the flow paths of the first inspection media L 1, L 2, and L 3 along the separator pair 100.
  • FIG.10 (c) is a perspective view which expands and shows typically the internal leak location E of the separator pair 100 shown in FIG.10 (b).
  • FIG. 11 is a view showing a state in which the inspection device 1 is used to inspect through hole leakage of the separator pair 100.
  • FIG. 11A is a cross-sectional view showing the inspection apparatus 1 and the separator pair 100 from the side.
  • FIG. 11A in order to represent the flow paths of the second inspection media L4, L5, and L6, the separator pair 100 is shown by overlapping different cross sections.
  • FIG. 11B is a perspective view schematically showing the flow paths of the second inspection media L4, L5, and L6 along the separator pair 100.
  • FIG. FIG.11 (c) is a perspective view which expands and shows typically the through-hole leak location F of the separator pair 100 illustrated in FIG.11 (b).
  • the internal leakage of the separator pair 100 is detected by the configuration shown in FIG.
  • the first joint 100g may be poorly bonded.
  • the first joint 100g may be poorly bonded.
  • the cooling water leaks from the unwelded portion 100q to the outside, internal leakage occurs in the separator pair 100.
  • the medium is mixed into the separator pair 100 from the outside of the separator pair 100 through the unwelded portion 100q of the first joint 100g.
  • the through-hole leakage of the separator pair 100 is detected by the configuration shown in FIG.
  • the second joint portion 100m joins the locations of the anode-side separator 101 and the cathode-side separator 102 that are formed in an uneven shape corresponding to the active area. Specifically, even if the laser is scanned linearly without being interrupted or shielded, as shown in FIG. 11C, laser welding of the anode side separator 101 and the cathode side separator 102 is performed in the active area. Is difficult.
  • the upper mold 11 is raised from the lower mold 12, and the upper mold 11 and the lower mold 12 are separated (S101).
  • the separator pair 100 is attached to the lower mold 12 (S102).
  • type 11 is dropped with respect to the lower mold
  • the inspection medium is injected into the accommodation space 10s of the upper mold 11 and the lower mold 12 from the cylinder 21 of the injection section 20 through the pipe 22 (S104).
  • the medium in the accommodation space 10s is evacuated using the vacuum pumps 51 and 52 of the suction unit 50 (S105).
  • the inspection medium is detected by the first detector 31 of the detector 30 while continuing the state of S104 and S105.
  • the first inspection media L1 and L2 injected from the injection unit 20 into the storage space 10s of the storage unit 10 are, for example, outside the separator pair 100. It penetrates into the space part 100u shown to Fig.8 (a) through the unwelded location 100q of the 1st junction part 100g formed in the peripheral part.
  • the first inspection medium L3 injected from the injection part 20 into the accommodation space part 10s of the accommodation part 10 has an unwelded portion 100q of the first joint part 100g formed in, for example, the cathode gas supply port 100a of the separator pair 100.
  • the first inspection media L1, L2, and L3 are caused to flow out of the cooling water discharge port 100e and detected by the first detector 31 via the through hole 12d of the lower mold 12 and the first pipe 32. (S106).
  • the inspection medium is detected by the second detector 33 of the detection unit 30 while the states of S104 and S105 are continued.
  • the second inspection media L4 and L5 injected from the injection unit 20 into the storage space 10s of the storage unit 10 are, for example, active in the separator pair 100. It penetrates into the through hole portion 100r of the second joint portion 100m formed in the uneven portion corresponding to the area.
  • the second inspection medium L6 injected from the injection unit 20 into the storage space 10s of the storage unit 10 enters the through hole portion 100r of the second joint 100m formed in, for example, the cathode gas supply port 100a of the separator pair 100. invade.
  • the second inspection media L4, L5, and L6 are detected by the second detector 33 through the through hole 12c of the lower mold 12 and the second pipe 34 (S110).
  • the bonded body inspection method according to the present embodiment described above and the inspection apparatus 1 that embodies the inspection method have the following operational effects.
  • the quality of joining of the joined body in which at least the first member (anode-side separator 101) and the second member (cathode-side separator 102) each having a thin plate shape are joined is inspected.
  • the separator pair 100 used for the inspection includes a first joint portion 100g obtained by annularly joining the outer peripheral edges of the anode side separator 101 and the cathode side separator 102, the inner side of the outer peripheral edge, and the anode side separator 101 and the cathode side separator.
  • This inspection method has an accommodation process, an injection process, and a detection process.
  • the accommodating step the separator pair 100 is accommodated while being retained in the accommodating space 10s.
  • an inspection medium for inspection is injected into the accommodation space 10s.
  • the detection step is connected to the accommodation space 10s, and out of the inspection medium flows out of the cooling water discharge port 100e through the space 100u from the poorly bonded portion of the first joint 100g of the separator pair 100.
  • the first inspection medium L1, L2, or L3 and the second inspection medium L4, L5, or L6 that has passed through the poorly bonded portion of the second bonding portion 100m of the separator pair 100 are detected.
  • the inspection apparatus 1 inspects whether or not a joined body (separator pair 100) is joined by joining at least a first member (anode-side separator 101) and a second member (cathode-side separator 102) each having a thin plate shape.
  • the separator pair 100 used for the inspection includes a first joint portion 100g obtained by annularly joining the outer peripheral edges of the anode side separator 101 and the cathode side separator 102, the inner side of the outer peripheral edge, and the anode side separator 101 and the cathode side separator. And a cooling water discharge port 100e facing outward from a space portion 100u provided between the anode-side separator 101 and the cathode-side separator 102.
  • the inspection apparatus 1 includes a storage unit 10, an injection unit 20, and a detection unit 30.
  • the accommodating portion 10 accommodates the separator pair 100 by holding it in the accommodating space portion 10s.
  • the injection unit 20 injects an inspection medium for inspection into the accommodation space 10s.
  • the detection unit 30 is connected to the accommodating space 10s and flows out of the cooling medium discharge port 100e through the space 100u from the poorly bonded portion of the first bonding portion 100g of the separator pair 100 in the inspection medium.
  • the first inspection medium L1, L2, or L3 and the second inspection medium L4, L5, or L6 that has passed through the poorly bonded portion of the second bonding portion 100m of the separator pair 100 are detected.
  • the separator pair 100 is held in the accommodating space portion 10s and accommodated, and the separator among the inspection media injected into the accommodating space portion 10s.
  • the first inspection medium L1, L2, or L3 flowing out of the opening (for example, the cooling water discharge port 100e) from the poorly bonded portion of the first joint 100g of the pair 100 through the space 100u is detected.
  • the first joining portion 100g of the separator pair 100 is obtained by joining the outer peripheral edges of the anode-side separator 101 and the cathode-side separator 102 in an annular shape.
  • the cooling water discharge port 100e corresponding to the opening of the separator pair 100 faces outward from the space 100u provided between the anode side separator 101 and the cathode side separator 102. Furthermore, according to the inspection method and the inspection apparatus 1, the second inspection medium L4, L5, or L6 that has passed through the poorly bonded portion of the second bonding portion 100m of the separator pair 100 is detected.
  • the second joint portion 100m is a portion that is inward of the outer peripheral edge and partially joins the anode side separator 101 and the cathode side separator 102.
  • the separator pair is caused by the inspection medium used for inspecting the quality of the joining of the separator pair 100 in which the anode side separator 101 and the cathode side separator 102 are joined. It can prevent that 100 expand
  • housing process and the housing space 10 s of the housing portion 10 may be configured to be close to the separator pair 100 along the outer shape of the separator pair 100.
  • the accommodation space portion 10s can prevent the separator pair 100 from expanding. .
  • the injection step and the injection unit 20 may be configured to pressurize the interior of the accommodation space 10s with an inspection medium injected into the accommodation space 10s.
  • the separator pair 100 can be prevented from expanding by pressing the separator pair 100 from all directions using the inspection medium.
  • the internal leakage of the separator pair 100 (due to the unwelded portion 100q of the first joint 100g) or the through-hole leakage of the separator pair 100 (the through-hole portion 100r of the second joint 100m). Can be detected with high accuracy in a short time. That is, when the inside of the accommodation space 10s is pressurized with the inspection medium, the unwelded portion 100q of the first joint 100g and the second joint 100m of the second joint 100m are compared with the case where the inside of the accommodation space 10s is maintained at atmospheric pressure. It becomes easy for the inspection medium to enter the through hole portion 100r.
  • the inspection medium that has entered the unwelded portion 100q of the first joint portion 100g and the through-hole portion 100r of the second joint portion 100m can be detected in a shorter time. Further, when the inside of the accommodation space 10s is pressurized with the inspection medium, the unwelded portion 100q and the second joint of the first joint 100g that are finer than the case where the inside of the accommodation space 10s is maintained at atmospheric pressure. The inspection medium can be penetrated into the 100 m through hole portion 100r. Therefore, the inspection medium that has entered the unwelded spot 100q of the first joint 100g and the through-hole spot 100r of the second joint 100m can be detected with higher accuracy, and the detection resolution can be improved. .
  • the corner in the accommodation space portion 10s or the like can be obtained without distorting the space portion 100u of the separator pair 100 only by increasing the pressure in the accommodation space portion 10s from 101.3 kPa corresponding to atmospheric pressure, for example, about several kPa. It is possible to guide the inspection medium staying in the detection unit 30 side.
  • it may be configured to further include a suction step for sucking the medium in the accommodation space portion 10s and the suction portion 50.
  • expansion of the separator pair 100 can be prevented by reducing the pressure of the space portion 100u provided between the anode-side separator 101 and the cathode-side separator 102 of the separator pair 100.
  • the internal leakage of the separator pair 100 (due to the unwelded portion 100q of the first joint 100g) or the through-hole leakage of the separator pair 100 (the through-hole portion 100r of the second joint 100m). Can be detected with high accuracy in a short time. That is, when the medium in the housing space portion 10s is sucked, the unwelded portion 100q of the first joint portion 100g and the through hole of the second joint portion 100m are compared with the case where the inside of the housing space portion 10s is maintained at atmospheric pressure. It becomes easy for the inspection medium to enter the location 100r.
  • the inspection medium that has entered the unwelded portion 100q of the first joint portion 100g and the through-hole portion 100r of the second joint portion 100m can be detected in a shorter time. Furthermore, when the medium in the housing space 10s is sucked, the unwelded portion 100q of the first joint 100g and the second joint 100m of the finer first joint 100g are compared with the case where the inside of the housing 10s is kept at atmospheric pressure. The inspection medium can enter the through hole portion 100r. Therefore, the inspection medium that has entered the unwelded spot 100q of the first joint 100g and the through-hole spot 100r of the second joint 100m can be detected with higher accuracy, and the detection resolution can be improved. .
  • the inspection process and detection unit 30 may be configured to independently detect the first inspection medium L1, L2, or L3 and the second inspection medium L4, L5, or L6.
  • the internal leakage of the separator pair 100 (due to the unwelded part 100q of the first joint 100g) and the through-hole leakage of the separator pair 100 (due to the through-hole part 100r of the second joint 100m). ) Can be detected separately. Therefore, when a bonding failure occurs in the separator pair 100, it is possible to grasp whether the bonding failure is due to internal leakage of the separator pair 100 or leakage of the through holes of the separator pair 100.
  • a bonding failure occurs in the separator pair 100, if the bonding failure is an internal leak of the separator pair 100, for example, repair is performed, whereas if the bonding failure is a through-hole leakage of the separator pair 100, For example, discarding can be selected.
  • a separator pair 100 (anode-side separator 101 and cathode-side separator 102) made of metal for a fuel cell may be used for the joined body.
  • the separator pair 100 in which the anode-side separator 101 and the cathode-side separator 102 each having a thin plate shape are joined it is possible to prevent the minute space portion 100u from being expanded by the inspection medium. Further, even if the anode side separator 101 and the cathode side separator 102 are sufficiently adjacent to each other on the outer peripheral edge of the separator pair 100, the laser oscillation is temporarily interrupted, for example, and is generated in the first joint 100g. An unwelded portion 100q can be detected.
  • the anode-side separator 101 and the cathode-side separator 102 are difficult to be sufficiently adjacent to each other, and it is difficult to set the laser welding conditions.
  • the hole location 100r can be detected.
  • the opening of the joined body may be, for example, a cooling water discharge port 100e.
  • the existing cooling water discharge port 100e in the separator pair 100 can be used for the opening. Therefore, it is not necessary to provide an opening for the separator pair 100 separately.
  • the first detector 31 may detect internal leakage of the separator pair 100 due to the unwelded portions of the third joints 100h, 100i, 100j, and 100k of the separator pair 100.
  • the pressure adjustment valve (not shown) is provided in the pipe 22 of the injection unit 20 and the pressure adjustment valve is used to control the pressure in the accommodation space 10 s of the accommodation unit 10.
  • the present invention is not limited to such a configuration. For example, by providing a through hole in the upper mold 11 and discharging a part of the inspection medium from the through hole, the pressure of the accommodation space portion 10s of the accommodation portion 10 is increased. It is good also as a structure which controls.
  • the present invention is not limited to such a configuration.
  • the inspection medium discharged from the first pipe 32 and the second pipe 34 is collected and regenerated by a collecting device (not shown) and then forwarded to the pipe 22. By doing so, it may be configured to be reused.
  • the through-hole leak (second joint portion) of the separator pair 100 is detected.
  • the present invention is not limited to such a configuration.
  • an internal leak of the separator pair 100 and a through-hole leak of the separator pair 100 may be detected at the same time.
  • the joined body separatator pair 100 obtained by joining the two kinds of first members (the anode side separator 101) and the second member (the cathode side separator 102) is inspected.
  • the configuration has been described in which the joined body (separator pair 100) obtained by laser welding the first member (for example, the anode-side separator 101) and the second member (for example, the cathode-side separator 102) has been described.
  • the present invention is not limited to such a configuration, and may be a configuration for inspecting a bonded body bonded by bonding using an adhesive, heat welding using a heater, ultrasonic welding using an ultrasonic vibrator, or the like. Good.

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  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Secondary Cells (AREA)
  • Examining Or Testing Airtightness (AREA)

Abstract

L'invention vise à procurer un procédé de test pour corps liés, apte à tester la qualité d'une liaison d'un corps lié dans lequel un premier élément et un second élément, tous deux étant des plaques minces, sont liés, sans déformation du corps lié. A cet effet, l'invention porte sur un procédé de test pour corps liés, lequel procédé teste une liaison d'un corps lié dans lequel un premier élément et un second élément sont liés. Le corps lié comprend une première section de liaison qui lie les bords périphériques externes du premier élément et du second élément sous une forme annulaire, une seconde section de liaison qui lie partiellement le premier élément et le second élément davantage vers l'intérieur que le bord périphérique externe, et une ouverture qui fait face vers l'extérieur à partir d'un espace réalisé entre le premier élément et le second élément. Dans une étape de réception de ce procédé de test, le corps lié est maintenu et reçu dans un espace de réception. Dans une étape d'injection, un milieu de test pour le test est injecté dans l'espace de réception. Dans un espace de détection, il est effectué une liaison avec l'espace de réception, et, en ce qui concerne le milieu de test, un premier milieu de test qui s'écoule vers l'extérieur de l'ouverture à travers l'espace à partir d'une partie de défaut de liaison de la première section de liaison du corps lié et un second milieu de test qui traverse une partie défectueuse de la liaison de la seconde section de liaison du corps lié sont détectés.
PCT/JP2014/053377 2013-03-19 2014-02-13 Procédé de test et dispositif de test pour corps liés WO2014148163A1 (fr)

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JP2013-056905 2013-03-19
JP2013056905A JP2016106215A (ja) 2013-03-19 2013-03-19 接合体の検査方法および検査装置

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CN104792476A (zh) * 2015-05-13 2015-07-22 神龙汽车有限公司 一种整车气密性的检测方法
JP2017004781A (ja) * 2015-06-11 2017-01-05 株式会社豊田自動織機 気密検査装置及び気密検査方法
JP2017072414A (ja) * 2015-10-05 2017-04-13 日産自動車株式会社 検査方法及び検査装置
JPWO2016092672A1 (ja) * 2014-12-11 2017-06-15 日産自動車株式会社 燃料電池の製造方法及び製造装置
CN109297649A (zh) * 2018-11-28 2019-02-01 首都航天机械有限公司 一种膜片内圆焊缝快速氦质谱检漏的装置
CN109708820A (zh) * 2019-02-19 2019-05-03 上海神力科技有限公司 一种燃料电池双极板快速检漏装置及方法
CN109760243A (zh) * 2018-12-28 2019-05-17 广州瑞派医疗器械有限责任公司 凸阵式超声波换能器制造设备及方法
CN115861317A (zh) * 2023-02-27 2023-03-28 深圳市伟利达精密塑胶模具有限公司 基于机器视觉的塑胶模具生产缺陷检测方法

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EP4303556A1 (fr) 2021-03-03 2024-01-10 NOK Corporation Procédé d'inspection d'éléments d'étanchéité, dispositif d'inspection et programme d'inspection

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JP2011179970A (ja) * 2010-03-01 2011-09-15 Ts:Kk 板状成形・接合体の漏れ検査装置

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JP2005274291A (ja) * 2004-03-24 2005-10-06 Yamaha Fine Technologies Co Ltd 多経路ワークの漏れ検査装置
JP2005276729A (ja) * 2004-03-26 2005-10-06 Fuji Electric Holdings Co Ltd 固体高分子型燃料電池セルの性能検査方法
JP2011179970A (ja) * 2010-03-01 2011-09-15 Ts:Kk 板状成形・接合体の漏れ検査装置

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPWO2016092672A1 (ja) * 2014-12-11 2017-06-15 日産自動車株式会社 燃料電池の製造方法及び製造装置
CN104792476A (zh) * 2015-05-13 2015-07-22 神龙汽车有限公司 一种整车气密性的检测方法
JP2017004781A (ja) * 2015-06-11 2017-01-05 株式会社豊田自動織機 気密検査装置及び気密検査方法
JP2017072414A (ja) * 2015-10-05 2017-04-13 日産自動車株式会社 検査方法及び検査装置
CN109297649A (zh) * 2018-11-28 2019-02-01 首都航天机械有限公司 一种膜片内圆焊缝快速氦质谱检漏的装置
CN109297649B (zh) * 2018-11-28 2020-10-23 首都航天机械有限公司 一种膜片内圆焊缝快速氦质谱检漏的装置
CN109760243A (zh) * 2018-12-28 2019-05-17 广州瑞派医疗器械有限责任公司 凸阵式超声波换能器制造设备及方法
CN109708820A (zh) * 2019-02-19 2019-05-03 上海神力科技有限公司 一种燃料电池双极板快速检漏装置及方法
CN115861317A (zh) * 2023-02-27 2023-03-28 深圳市伟利达精密塑胶模具有限公司 基于机器视觉的塑胶模具生产缺陷检测方法
CN115861317B (zh) * 2023-02-27 2023-04-28 深圳市伟利达精密塑胶模具有限公司 基于机器视觉的塑胶模具生产缺陷检测方法

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