CN-121986190-A - Fluid container and electrochemical cell

Abstract

The fluid container (3) is provided with a first metal member (31), a second metal member (32), and an adhesive part (34). The first and second metal members (31, 32) contain 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 adhesive part (34) has a base (341) and a convex part (342). The protruding part (342) protrudes from the base part (341) in the thickness direction.

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 (11)

1. 1. A fluid container, comprising: A first metal part comprising chromium; a second metal part containing chromium, and A bonding portion which is made of an oxide containing chromium as a main component and bonds the first metal member and the second metal member, The adhesive portion has a base portion and a convex portion protruding from the base portion in a thickness direction.
2. 2. The fluid container according to claim 1, wherein, The protrusion is composed of a different material than the base.
3. 3. The fluid container according to claim 1, wherein, The convex portion is composed of the same material as the base portion.
4. 4. The fluid container according to claim 1, wherein, The fluid container further includes an inner space through which a fluid flows, The adhesive portion extends in a ring shape so as to surround the internal space, The adhesive portion has a plurality of the convex portions, The convex portions are arranged along an outer peripheral edge portion of the first metal member.
5. 5. The fluid container according to claim 1, wherein, The fluid container further includes an inner space through which a fluid flows, The adhesive portion has a plurality of the convex portions, The convex portions are arranged from the inner space toward an outer peripheral edge portion of the first metal member.
6. 6. The fluid container according to claim 1, wherein, The ratio (t 2/t 1) of the thickness (t 2) of the thickest part of the adhesive part to the thickness (t 1) of the thinnest part of the adhesive part is 1.2 or more.
7. 7. The fluid container according to claim 1, wherein, The fluid container further includes an inner space through which a fluid flows, The adhesive portion has a thick portion thicker than an average thickness thereof, The ratio (L/L0) of the length (L) of the thick portion to the length (L0) of the adhesive portion in the direction from the inner space toward the outer peripheral edge portion of the first metal member is 0.4 or less.
8. 8. The fluid container according to claim 1, wherein, The fluid container further includes an inner space through which a fluid flows, The bonding part is a seal for sealing the inner space.
9. 9. 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.
10. 10. The electrochemical cell according to claim 9, wherein the electrochemical cell comprises, The fluid container has an interior space for fluid communication, 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.
11. 11. The electrochemical cell according to claim 9, wherein the electrochemical cell comprises, The fluid container has an interior space for fluid communication, 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. A crack may occur in the bonded portion, and the bonded portion may be broken due to progress of the crack. The invention provides a fluid container and an electrochemical cell capable of suppressing breakage of an adhesive part. The fluid container according to the first aspect includes a first metal member, a second metal member, and an adhesive portion. The first metal part and the second metal part contain 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 adhesive portion has a base portion and a convex portion. The convex portion protrudes from the base portion in the thickness direction. According to this configuration, the bonding portion is sandwiched between the first metal member and the second metal member, and therefore, local compressive stress is generated in the region of the bonding portion where the convex portion is formed. As a result, even if cracks occur in the bonded portion, the progress of the cracks can be suppressed in the region where the local compressive stress occurs, and further, the breakage of 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 protrusion is composed of a different material than the base. The fluid container according to the third aspect is the fluid container according to the first aspect, and is configured as follows. The convex portion is made of the same material as the base portion. A fourth aspect of the present invention provides the fluid container according to any one of the first to third aspects, further comprising an internal space through which a fluid flows. The adhesive portion extends annularly so as to surround the internal space. The adhesive portion has a plurality of protruding portions. The protruding portions are arranged along the outer peripheral edge portion of the first metal member. A fifth aspect of the present invention provides the fluid container according to any one of the first to fourth aspects, further comprising an internal space through which fluid flows. The adhesive portion has a plurality of protruding portions. The protruding portions are arranged from the inner space toward the outer peripheral edge portion of the first metal member. A fluid container according to a sixth aspect is the fluid container according to any one of the first to fifth aspects, wherein the fluid container is configured as follows. The ratio (t 2/t 1) of the thickness (t 2) of the thickest part of the adhesive part to the thickness (t 1) of the thinnest part of the adhesive part is 1.2 or more. A fluid container according to a seventh aspect is the fluid container according to any one of the first to sixth aspects, further comprising an internal space through which fluid flows. The adhesive part has a thick part thicker than the average thickness thereof. The ratio (L/L0) of the length (L) of the thick portion to the length (L0) of the adhesive portion in the direction from the inner space toward the outer peripheral edge portion of the first metal member is 0.4 or less. A fluid container according to an eighth aspect is the fluid container according to any one of the first to seventh aspects, further comprising an internal space through which fluid flows. The bonding part is a seal for sealing the inner space. An electrochemical cell according to a ninth aspect includes the fluid container according to any one of the first to eighth aspects, and a cell body portion disposed on the fluid container. The electrochemical cell according to the tenth aspect is the electrochemical cell according to the ninth aspect, and is configured as follows. Th