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CN-121986188-A - Fluid container and electrochemical cell

CN121986188ACN 121986188 ACN121986188 ACN 121986188ACN-121986188-A

Abstract

The fluid container (3) is provided with a first metal member (31), a second metal member (32), an adhesive part (34), a first interface (4), and a second interface (5). The first metal part (31) contains chromium. The second metal part (32) contains chromium. The bonding part (34) is composed of an oxide containing chromium as a main component. The bonding part (34) bonds the first metal member (31) and the second metal member (32). The first interface (4) is an interface between the first metal member (31) and the bonding portion (34). The second interface (5) is an interface between the second metal member (32) and the bonding portion (34). The first interface (4) has a first inclined portion (41). The first inclined portion (41) is inclined with respect to the plane direction of the first metal member (31).

Inventors

  • SHIROI TAKASHI
  • NAKAMURA TOSHIYUKI
  • Teramoto Genta
  • OHMORI TAKASHI

Assignees

  • 日本碍子株式会社

Dates

Publication Date
20260505
Application Date
20231005

Claims (15)

  1. 1. A fluid container having an interior space for fluid communication, The fluid container is characterized by comprising: A first metal part comprising chromium; A second metal part comprising chromium; a bonding portion that is made of an oxide containing chromium as a main component and bonds the first metal member and the second metal member; a first interface between the first metal member and the bonding portion, and A second interface between the second metal member and the bonding portion, The first interface has a first inclined portion inclined with respect to the plane direction of the first metal member.
  2. 2. The fluid container according to claim 1, wherein, The adhesive portion extends in a ring shape so as to surround the internal space, The first inclined portion extends along the bonding portion.
  3. 3. The fluid container according to claim 1, wherein, The first inclined portion is inclined from the inner space toward an outer periphery of the fluid container.
  4. 4. The fluid container according to claim 1, wherein, The second interface has a second inclined portion inclined with respect to the plane direction of the second metal member.
  5. 5. The fluid container according to claim 4, wherein, The first inclined portion and the second inclined portion are repeated with each other as viewed in the thickness direction, and are inclined so as to approach each other from the inner space toward the outer periphery of the fluid container.
  6. 6. The fluid container according to claim 5, wherein, The first interface has a third inclined portion inclined with respect to the plane direction of the first metal member, The second interface has a fourth inclined portion inclined with respect to the plane direction of the second metal member, The third inclined portion is disposed on the outer peripheral side with respect to the first inclined portion, The fourth inclined portion is disposed on the outer peripheral side with respect to the second inclined portion, The third inclined portion and the fourth inclined portion are repeated with each other as viewed in the thickness direction, and are inclined so as to be separated from each other from the inner space toward the outer peripheral edge.
  7. 7. The fluid container according to claim 6, wherein, The bonding portion has a first taper portion defined by the first inclined portion and the second inclined portion, and a second taper portion defined by the third inclined portion and the fourth inclined portion, The taper ratio of the first taper is greater than the taper ratio of the second taper.
  8. 8. The fluid container according to claim 6, wherein, The fluid container further includes a metal joint portion integrally formed with the first metal member and the second metal member and made of a metal material, The bonding portion has a first taper portion defined by the first inclined portion and the second inclined portion, and a second taper portion defined by the third inclined portion and the fourth inclined portion, The metal joint is disposed between the first taper and the second taper.
  9. 9. The fluid container according to claim 1, wherein, The adhesion portion has a space portion extending in a plane direction of the first metal member in the adhesion portion.
  10. 10. The fluid container according to claim 1, wherein, The adhesive portion is formed of a plurality of layers, The number of layers of the adhesive portion is different in a direction from the inner space toward an outer peripheral edge of the fluid container.
  11. 11. The fluid container according to claim 9, wherein the fluid container comprises a plurality of fluid containers, The number of layers of the adhesive portion decreases in a direction from the inner space toward an outer peripheral edge of the fluid container.
  12. 12. The fluid container according to claim 1, wherein, The bonding part is a seal for sealing the inner space.
  13. 13. An electrochemical cell comprising a plurality of cells, characterized by comprising: the fluid container of claim 1, and And a cell body portion disposed on the fluid container.
  14. 14. The electrochemical cell according to claim 13, wherein the electrochemical cell comprises, The first metal part has a plurality of communication holes connected to the inner space, The cell main body portion is disposed on the first metal member so as to cover the plurality of communication holes.
  15. 15. The electrochemical cell according to claim 13, wherein the electrochemical cell comprises, The second metal part has a plurality of communication holes connected to the inner space, The cell main body portion is disposed on the second metal member so as to cover the plurality of communication holes.

Description

Fluid container and electrochemical cell Technical Field The present invention relates to fluid containers and electrochemical cells. Background Electrochemical cells such as electrolytic cells and fuel cell cells have a fluid container for supplying a fluid to a cell body portion thereof. For example, the fluid container disclosed in patent document 1 includes a first interconnector, a second interconnector, a separator, a fuel electrode frame, and a glass seal. The first interconnector is connected to an air electrode of the fuel cell. The second interconnector is connected with a fuel electrode collector layer of the fuel cell. The separator is connected to the solid electrolyte of the fuel cell, and separates the flow paths of the fuel gas and the oxidant gas. The fuel electrode frame is disposed between the separator and the second interconnector. A glass seal bonds the first interconnect and the spacer. Prior art literature Patent literature Patent document 1 Japanese patent laid-open No. 2015-156352 Disclosure of Invention In the fluid container described above, the first metal member and the second metal member are bonded together by the bonding portion. The fluid container generates a thermal expansion difference between the first metal member and the second metal member due to thermal cycles associated with the start and stop of the electrochemical cell, and generates a shear stress at an interface between the first metal member and the bonded portion. As a result, peeling may occur at the interface between the first metal member and the bonded portion. The invention provides a fluid container and an electrochemical cell capable of inhibiting interfacial peeling between a first metal member and an adhesive part. The fluid container according to the first aspect is a fluid container having an inner space through which fluid flows. The fluid container includes a first metal member, a second metal member, an adhesive portion, a first interface, and a second interface. The first metal part contains chromium. The second metal part contains chromium. The bonding portion is made of an oxide containing chromium as a main component. The bonding portion bonds the first metal member and the second metal member. The first interface is an interface between the metal member and the bonding portion. The second interface is an interface between the second metal member and the bonding portion. The first interface has a first sloped portion. The first inclined portion is inclined with respect to the plane direction of the first metal member. According to this configuration, the first interface, which is the interface between the first metal member and the adhesive portion, has a first inclined portion inclined with respect to the surface direction of the first metal member. Therefore, a part of the shear stress generated at the first interface can be converted from the plane direction to the thickness direction. As a result, interfacial peeling between the first metal member and the bonded portion can be suppressed. The fluid container according to the second aspect is the fluid container according to the first aspect, and is configured as follows. The adhesive portion extends annularly so as to surround the internal space. The first inclined portion extends along the bonding portion. The fluid container according to the third aspect is the fluid container according to the first or second aspect, and is configured as follows. The first inclined portion is inclined from the inner space toward an outer periphery of the fluid container. A fluid container according to a fourth aspect is the fluid container according to any one of the first to third aspects, wherein the fluid container is configured as follows. The second interface has a second inclined portion inclined with respect to the plane direction of the second metal member. A fifth aspect of the present invention provides the fluid container according to the fourth aspect, wherein. The first inclined portion and the second inclined portion are inclined so as to be close to each other from the inner space toward the outer peripheral edge of the fluid container, as viewed in the thickness direction. A fluid container according to a sixth aspect is the fluid container according to the fifth aspect, wherein. The first interface has a third inclined portion inclined with respect to the plane direction of the first metal member. The second interface has a fourth inclined portion inclined with respect to the plane direction of the second metal member. The third inclined portion is disposed on the outer peripheral side with respect to the first inclined portion. The fourth inclined portion is disposed on the outer peripheral side with respect to the second inclined portion. The third inclined portion and the fourth inclined portion are inclined so as to be separated from each other from the inner space toward the outer peripheral edge, and overlap each other when viewe