CN-121986189-A - Fluid container and electrochemical cell

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 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 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 wavy portion (41). The first wavy portion (41) is configured such that the amplitude is repeated in the thickness direction. The first wavy portion (41) extends along the outer peripheral edge portion 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 (11)

1. 1. A fluid container, comprising: A first metal part comprising chromium; A second metal part comprising chromium; a bonding portion made of an oxide containing chromium as a main component, the bonding portion bonding 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 wavy portion that repeats amplitude in a thickness direction and extends along an outer peripheral edge portion of the first metal member.
2. 2. The fluid container according to claim 1, wherein, The second interface has a second wavy portion that repeats amplitude in a thickness direction and extends along an outer peripheral edge portion of the second metal member.
3. 3. The fluid container according to claim 1, wherein, The first wavy portion is configured such that the amount of fluctuation at the outer peripheral portion thereof is greater than the amount of fluctuation at the inner peripheral portion thereof.
4. 4. The fluid container according to claim 1, wherein, The first adhesive portion has a void portion.
5. 5. The fluid container according to claim 1, wherein, The first wavy portion has a variation of 1 μm or more and 50 μm or less.
6. 6. A fluid container according to claim 2, wherein, The first wavy portion has a fluctuation amount of 1 μm or more and 50 μm or less, The second wavy portion has a variation of 1 μm or more and 50 μm or less.
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 extends annularly so as to surround the internal space.
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. The fluid container may cause a thermal expansion difference between the first metal member and the second metal member due to thermal cycles associated with starting and stopping of the electrochemical cell, and the like, and the load concentrates on the bonded portion, so that the bonded portion may be broken. 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, 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 first 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 wave. The first wavy portion is configured to repeat the amplitude in the thickness direction. The first wavy portion extends along an outer peripheral edge portion of the first metal member. According to this configuration, the stress generated in the bonding portion is dispersed by the first wavy portion at the first interface of the bonding portion, and breakage of the bonding portion is suppressed. The fluid container according to the second aspect is the fluid container according to the first aspect, and is configured as follows. The second interface has a second wave. The second wavy portion is configured to repeat the amplitude in the thickness direction. The second wavy portion extends along an outer peripheral edge portion of the second metal member. 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 wavy portion is configured such that the amount of fluctuation at the outer peripheral edge portion thereof is greater than the amount of fluctuation at the inner peripheral edge portion thereof. 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 first adhesive portion has a void portion. A fifth aspect of the present invention provides the fluid container according to any one of the first to fourth aspects, wherein the fluid container is as follows. The first wavy portion has a variation of 1 μm or more and 50 μm or less. A fluid container according to a sixth aspect is the fluid container according to the second aspect, wherein. The first wavy portion has a variation of 1 μm or more and 50 μm or less. The second wavy portion has a variation of 1 μm or more and 50 μm or less. 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 portion extends annularly so as to surround the internal space. 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. The fluid container has an interior space for fluid communication. The f