IPC분류정보
국가/구분 |
United States(US) Patent
등록
|
국제특허분류(IPC7판) |
|
출원번호 |
US-0711685
(2004-09-30)
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등록번호 |
US-7378177
(2008-05-27)
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발명자
/ 주소 |
- Hanlon,Greg A.
- Henderson,David E.
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출원인 / 주소 |
- Proton Energy Systems, Inc.
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대리인 / 주소 |
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인용정보 |
피인용 횟수 :
0 인용 특허 :
14 |
초록
▼
A bipolar plate for an electrochemical cell having a first layer, a second layer, and a third layer is disclosed. The first layer has a first plurality of through channels oriented in a first direction. The second layer has a second plurality of through channels oriented in a second different direct
A bipolar plate for an electrochemical cell having a first layer, a second layer, and a third layer is disclosed. The first layer has a first plurality of through channels oriented in a first direction. The second layer has a second plurality of through channels oriented in a second different direction. The third layer is disposed between and bonded to the first and second layers. The third layer has a first set of header channels in fluid communication with the first plurality of channels, and a second set of header channels in fluid communication with the second plurality of channels. A first inlet port and a first outlet port are in fluid communication with the first set of header channels, and a second inlet port and a second outlet port are in fluid communication with the second set of header channels. The bonded third layer prevents fluid communication between the first plurality of channels and the second plurality of channels.
대표청구항
▼
What is claimed is: 1. A bipolar plate for an eleetrochemical cell, comprising: a first layer having a first plurality of through-hole channels oriented in a first direction; a second layer having a second plurality of through-hole channels oriented in a second different direction; a third layer di
What is claimed is: 1. A bipolar plate for an eleetrochemical cell, comprising: a first layer having a first plurality of through-hole channels oriented in a first direction; a second layer having a second plurality of through-hole channels oriented in a second different direction; a third layer disposed between, in direct contact with, and bonded to the first and second layers, the third layer having a first set of through-hole header channels in fluid communication with the first plurality of channels, and a second set of through-hole header channels in fluid communication with the second plurality of channels; a first inlet port and a first outlet port in fluid communication with the first set of header channels; a second inlet port and a second outlet port in fluid communication with the second set of header channels; wherein the first layer and third layer are metallurgically bonded together to define a first bond line that encompasses the first plurality of channels, the first inlet port and the first outlet port; wherein the first bond line is defined by a first metallic seal disposed between the first layer and the third layer, the first metallic seal comprising material from the first layer and the third layer, the first bond line having a first portion that extends partially around the perimeter of the first plurality of channels, a second portion that extends partially around the perimeter of the first inlet port and a third portion that extends partially around the perimeter of the first outlet port, the first portion of the first bond line being integral with the second and third portions of the first bond line; wherein the second layer and third layer are metallurgically bonded together to define a second bond line that encompasses the second plurality of channels, the second inlet port and the second outlet port; wherein the second bond line is defined by a second metallic seal disposed between the second layer and the third layer, the second metallic seal comprising material for the second layer and the third layer; the second bond line having a first portion that extends partially around the perimeter of the second plurality of channels, a second portion that extends partially around the perimeter of the second inlet port and a third portion that extends partially around the perimeter of the second outlet port, the first portion of the second bond line being integral with the second and third portions of the second bond line; wherein each of the first, second and third layers have distinguishable through-hole channels with respect to each other; wherein the first metallic seal and the second metallic seal are disposed and configured to prevent fluid communication between the first plurality of channels and the second plurality of channels. 2. The bipolar plate of claim 1, wherein: the first direction is oriented about 90 degrees to the second direction. 3. The bipolar plate of claim 1, wherein: the first inlet port and the first outlet port are diagonally disposed with respect to a fluid flow therebetween; and the second inlet port and the second outlet port are diagonally disposed with respect to a fluid flow therebetween. 4. The bipolar plate of claim 1, wherein: the first layer has a first thickness; each of the first plurality of channels has a first width; the first width is equal to or greater than about the first thickness and equal to or less than about three times the first thickness; the second layer has a second thickness; each of the second plurality of channels has a second width; and the second width is equal to or greater than about the second thickness and equal to or less than about three times the second thickness. 5. The bipolar plate of claim 1, wherein: the first layer has a first thickness; each of the first plurality of channels has a first width; the first width is equal to or greater than about 1.5 times the first thickness; the second layer has a second thickness; each of the second plurality of channels has a second width; and the second width is equal to or greater than about 1.5 times the second thickness. 6. The bipolar plate of claim 4, wherein: the first width is greater than the second width. 7. The bipolar plate of claim 5, wherein: the first width is greater than the second width. 8. The bipolar plate of claim 1, wherein: the first set of header channels comprises a first through-hole channel extending from the first inlet port, and a second through-hole channel extending from the first outlet port; and the second set of header channels comprises a third through-hole channel extending from the second inlet port, and a fourth through-bole channel extending from the second outlet port. 9. The bipolar plate of claim 8, wherein: the first, second, third, and fourth, through-hole channels are isolated from each other. 10. The bipolar plate of claim 1, wherein: the third layer is diffusion bonded to the first and second layers. 11. The bipolar plate of claim 1, wherein: at least one of the first set of header channels and the second set of header channels of the third layer comprises a plurality of header channels, 12. The bipolar plate of claim 1, wherein: the first, second, and third, layers are made from titanium, zirconium, stainless steel, or any combination comprising at least one of the foregoing materials. 13. An electrochemical cell comprising: a first cell separator plate and a second cell separator plate; and a plurality of membrane-electrode-assemblies (MEAs) alternatively arranged with a plurality of flow field members between the first cell separator plate and the second cell separator plate; wherein at least one of the plurality of flow field members comprises a bipolar plate, the bipolar plate comprising: a first layer having a first plurality of through-hole channels oriented in a first direction; a second layer having a second plurality of through-hole channels oriented in a second different direction; a third layer disposed between, in direct contact with, and bonded to the first and second layers, the third layer having a first set of through-hole header channels in fluid communication with the first plurality of channels, and a second set of through-hole header channels in fluid communication with the second plurality of channels; a first inlet port and a first outlet port in fluid communication with the first set of header channels; a second inlet poll and a second outlet port in fluid communication with the second set of header channels; wherein the first layer and third layer are metallurgically bonded together to define a first bond line that encompasses the first plurality of channels, the first inlet port and the first outlet port; wherein the first bond line is defined by a first metallic seal disposed between the first layer and the third layer, the first metallic seal comprising material from the first layer and the third layer, the first bond line having a first portion tat extends partially around the perimeter of the first plurality of channels, a second portion that extends partially around the perimeter of the first inlet port and a third portion that extends partially around the perimeter of the first outlet port, the first portion of the first bond line being integral with the second and third portions of the first bond line; wherein the second layer and third layer arc metallurgically bonded together to define a second bond line that encompasses the second plurality of channels, the second inlet port and the second outlet port; wherein the second bond line is defined by a second metallic seal disposed between the second layer and the third layer, the second metallic seal comprising material for the second layer and the third layer, the second bond line having a first portion that extends partially around the perimeter of did second plurality of channels, a second portion that extends partially around the perimeter of the second inlet port and a third portion that extends partially around the perimeter of the second outlet port, the first portion of the second bond line being integral with the second and third portions of the second bond line; wherein each of the first, second and third layers have distinguishable through-hole channels with respect to each other; wherein the first metallic seal and the second metallic seal are disposed and configured to prevent fluid communication between the first plurality of channels and the second plurality of channels, 14. The bipolar plate of the electrochemical cell of claim 13, wherein: the first layer has a first thickness; each of the first plurality of channels has a first width; the first width is equal to or greater than about the first thickness and equal to or less than about three times the first thickness; the second layer has a second thickness; each of the second plurality of channels has a second width; and the second width is equal to or greater than about the second thickness and equal to or less than about three times the second thickness. 15. The bipolar plate of the electrochemical cell of claim 14, wherein: the first width is greater than the second width. 16. The electrochemical cell of claim 15, wherein: each MBA comprises an oxygen electrode and a hydrogen electrode; and the first layer of the bipolar plate is proximate the oxygen electrode. 17. The bipolar plate of the electrochemical cell of claim 15, wherein: the third layer is diffusion bonded to the first and second layers. 18. The electrochemical cell of claim 13, wherein the first plurality of through channels define a first active area, and further comprising: a fluid flow seal about the first active area; and a fluid flow seal about each of the inlet and outlet ports at the first layer. 19. The electrochemical cell of claim 18, wherein the second plurality of through channels of the a second active area, and further comprising: a fluid flow seal about the second active area; and a fluid flow seal about each of the inlet and outlet ports at the second layer. 20. An electrochemical cell comprising: a first cell separator plate and a second cell separator plate; and a plurality of membrane-electrode-assemblies (MEAs) alternatively arranged with a plurality of flow field members between the first cell separator plate and the second cell separator plate; wherein at least one of the plurality of flow field members comprises a bipolar plate, the bipolar plate comprising: first, second, and third, layers bonded together to form a laminated arrangement, the first layer having a first set of through-hole channels, the second layer having a second set of through-hole channels, and the third layer having a third and a fourth set of through-hole channels, the third layer being disposed between and in direct contact with the first and second layers; the laminated arrangement having first and second inlet ports, and first and second outlet ports; wherein the first layer and third layer are metallurgically bonded together to define a first bond line that encompasses the first set of channels, the first inlet port and the first outlet port; wherein the first bond line of the laminated arrangement is defined by a first metallic seal disposed between the first layer and the third layer, the first metallic seal comprising material from the first layer and the third layer, the first bond line having a first portion that extends partially around the perimeter of the first set of through-hole channels, a second portion that extends partially around the perimeter of the first inlet port and a third portion that extends partially around the perimeter of the first outlet port, the first portion of the first bond line being integral with the second and third portions of the first bond line; wherein the second layer and third layer are metallurgically bonded together to define a second bond line that encompasses the second set of channels, the second inlet port and the second outlet port; wherein the second bond line of the laminated arrangement is defined by a second metallic seal disposed between the second layer and the third layer, the second metallic seal comprising material for the second lay&r and the third layer, the second bond line having a first portion that extends partially around the perimeter of the second set of through-hole channels, a second portion that extends partially around the perimeter of the second inlet port and a third portion that extends partially around the perimeter of the second outlet port, the first portion of the second bond line being integral with the second and third portions of the second bond line; wherein the first inlet port, the first set of through-hole channels, the third set of through-hole channels, and the first outlet port, define a first fluid flow path; wherein the second inlet port, the second set of through-hole channels, the fourth set of through-hole channels, and the second outlet port, define a second fluid flow path; wherein each of the first, second and third layers have distinguishable through-hole channels with respect to each other; wherein the first metallic seal and the second metallic seal of the laminated arrangement are disposed and configured to prevent fluid communication between the first fluid flow path and the second fluid flow path. 21. The bipolar plate of the electrochemical cell of claim 20, wherein: the third layer is diffusion bonded to the first and second layers. 22. The bipolar plate of the electrochemical cell of claim 21, wherein: the first, second, and third, layers are made from titanium, zirconium, stainless steel, or any combination comprising at least one of the foregoing materials. 23. The bipolar plate of claim 1, wherein the first set of header channels comprises a first pair of header channels, each of the first pair extending over an opposing end of the first plurality of channels; and the second set of header channels comprises a second pair of header channels, each of the second pair extending over an opposing end of the second plurality of channels. 24. A bipolar plate for an electrochemical cell, comprising; a first layer having a first plurality of through-bole channels; a second layer having a second plurality of through-hole channels; a third layer disposed between and in direct contact with the first and second layers, the third layer having a first set of through-hole header channels in fluid communication with the first plurality of channels, and a second set of through-hole header channels in fluid communication with the second plurality of channels; a first inlet port and a first outlet port in fluid communication with the first set of header channels; a second inlet port and a second outlet port in fluid communication with the second set of header channels; wherein the first layer and the third layer arc metallurgically bonded together resulting in a continuous first bond line defined by a first metallic seal disposed between the first layer and the third layer, the first metallic seal comprising material from the first layer and the third layer, the continuous first bond line extending from a first location proximate the first inlet port, around a first partial perimeter of the first plurality of channels, partially around only the outside of the perimeter of the first outlet port, around a second partial perimeter of the first plurality of channels, and partially around only the outside of the perimeter of the first inlet port, and concluding at the first location; and wherein the second layer and the third layer are metallurgically bonded together resulting in a continuous second bond line defined by a second metallic seal disposed between the second layer and the third layer, the second metallic seal comprising material from the second layer and the third layer, the continuous second bond line extending from a second location proximate the second inlet port, around a first partial perimeter of the second plurality of channels, partially around only the outside of the perimeter of the second outlet port, around a second partial perimeter of the second plurality of channels, and partially around only the outside of the perimeter of the second inlet port, and concluding at the second location.
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