摘要:
The invention mainly concerns a fuel cell seal (52) designed to be affixed on a bipolar plate (22) in the form of a membrane whereof the profile corresponds approximately to the peripheral frame (50) of the bipolar plate (22) and comprising a central opening (66) coinciding approximately with the central zone (46) dispensing the reagents of the bipolar plate (22). The invention also concerns a fuel cell comprising an electrode membrane assembly (70) which includes in particular an active region (74), which is the site of anode and cathode reactions, and a peripheral frame (75) and which is sandwiched between two bipolar plates (22) whereon is affixed the inventive seal (52).
摘要:
The invention mainly concerns a fuel cell seal (52) designed to be affixed on a bipolar plate (22) in the form of a membrane whereof the profile corresponds approximately to the peripheral frame (50) of the bipolar plate (22) and comprising a central opening (66) coinciding approximately with the central zone (46) dispensing the reagents of the bipolar plate (22). The invention also concerns a fuel cell comprising an electrode membrane assembly (70) which includes in particular an active region (74), which is the site of anode and cathode reactions, and a peripheral frame (75) and which is sandwiched between two bipolar plates (22) whereon is affixed the inventive seal (52).
摘要:
The invention relates to a bipolar plate for a fuel cell, of the type that comprises a cathode bipolar half plate and an anode bipolar half plate which are placed next to one another. Each bipolar half plate (1) consists of a plate, the central part of which comprises an active zone (2), while the periphery thereof comprises a plurality of cut-outs (4) which are intended to form at least two oxidant tanks, at least two fuel tanks and at least two coolant tanks. Moreover, at least one bipolar half plate comprises at least one connecting rib (8) between a peripheral cut-out and the active zone. The invention is characterised in that each cut-out (4) that is intended to form a coolant tank is surrounded by a tank-sealing rib (7) which projects out from the outer face of the bipolar half plate. The invention is also characterised in that the periphery of each bipolar half plate comprises a rib (15) for sealing the active zone, which projects out from the outer face of the bipolar half plate, such as to connect the coolant tank sealing ribs (7) in a continuous manner and to surround the oxidant and fuel tanks. Furthermore, each channel formed by a rib segment (15A) between two coolant tanks is blocked by a blocking means (17).
摘要:
The invention relates to a bipolar plate for a fuel cell, of the type that comprises anode and cathode bipolar half plates (1, 1′) which are placed next to one another. The central part of each bipolar half plate comprises an active zone (2), while the periphery thereof comprises a plurality of cut-outs (4, 4′, 5, 5′, 6) which are intended to form at least two oxidant tanks, two fuel tanks and two coolant tanks. Moreover, at least one bipolar half plate comprises at least one connecting rib (8, 8′, 10, 12) between a peripheral cut-out and the active zone. Projecting out from the outer face, each coolant tank cut-out is surrounded by a sealing rib (7, 7′) and the periphery of each bipolar half plate comprises a rib (15, 15′) for sealing the active zone, which connects the coolant tank sealing ribs and which surrounds the oxidant and fuel tanks. Furthermore, each channel formed by a rib segment (15, 15′) between two coolant tanks is blocked by a blocking means (17, 17′).
摘要:
The invention relates to a fuel cell bipolar plate (22) comprising at least one ridge (47, 23a, 33a, 40a, 27a, 35a, 41a, 23a) on at least one of the faces (51) thereof, such as seal at least one fluid circuit in the cell from among the oxidant, fuel and coolant inlet circuits and the oxidant, fuel and coolant outlet circuits, said circuits being formed by stacking openings which are provided in the plate (22) and which form an inlet and an outlet for the oxidant and the fuel (33, 40, 35, 41) respectively and openings which form an inlet and an outlet for the coolant (23, 27) respectively during the assembly of the constituent cells (1) of the fuel cell.
摘要:
A solid electrolyte fuel cell comprising an electrode-membrane (5) unit disposed between two bi-polar plates (3) and (4), also comprising at least one electroconductive cross-member (6) arranged between one of the bi-polar plates (4) and the electrode-membrane unit (5) in order to keep the bipolar plates at a distance, wherein the electrode membrane unit (5) is configured in such a way that it can divide the area (10) defined by the bi-polar plates into at least one channel for the passage of a first gas (8) and at least one channel for the passage of a second gas (9). Fuel cell consisting of a cell stack.
摘要:
The invention relates to a cooling system for a fuel cell, comprising a main heat-transfer-fluid circuit including a circulation pump (6) and a heat exchanger (8) with the exterior, which feed an upstream pipe (12) supplying the fluid to the cells (4) of the fuel cell, said fluid leaving the cells via a downstream pipe (14) in order to return to the main pump. The invention is characterised in that the main circuit comprises a three-port controlled valve (10, 16) on each upstream (12) and downstream (14) pipe, the third available port (10c) of the upstream pipe (12) being connected to the inlet of the pump (6) and the third available port (16c) of the downstream pipe (14) being connected to the outlet of the pump in order to establish a secondary fluid circuit.
摘要:
The invention relates to a cooling system for a fuel cell (2), comprising a main heat-transfer-fluid circuit including a main circulation pump (6) and a heat exchanger (8) with the exterior, which feed an upstream pipe (12) supplying the fluid to the cells (4) of the fuel cell, said fluid leaving the cells via a downstream pipe (14) in order to return to the main pump. The system is characterised in that a secondary circuit, comprising a secondary circulation device (30) that circulates the fluid in an alternate manner, is connected in parallel with the main circuit to the upstream (12) and downstream (14) pipes and in that one or more controlled valves (10, 16) allow the main circuit and the secondary circuit to operate independently.
摘要:
The invention relates to a cooling system for a fuel cell (2), comprising a main heat-transfer-fluid circuit including a main circulation pump (6) and a heat exchanger (8) with the exterior, which feed an upstream pipe (12) supplying the fluid to the cells (4) of the fuel cell, said fluid leaving the cells via a downstream pipe (14) in order to return to the main pump. The system is characterised in that a secondary circuit, comprising a secondary circulation device (30) that circulates the fluid in an alternate manner, is connected in parallel with the main circuit to the upstream (12) and downstream (14) pipes and in that one or more controlled valves (10, 16) allow the main circuit and the secondary circuit to operate independently.
摘要:
The invention relates to a cooling system for a fuel cell, comprising a main heat-transfer-fluid circuit including a circulation pump (6) and a heat exchanger (8) with the exterior, which feed an upstream pipe (12) supplying the fluid to the cells (4) of the fuel cell, said fluid leaving the cells via a downstream pipe (14) in order to return to the main pump. The invention is characterized in that the main circuit comprises a three-port controlled valve (10, 16) on each upstream (12) and downstream (14) pipe, the third available port (10c) of the upstream pipe (12) being connected to the inlet of the pump (6) and the third available port (16c) of the downstream pipe (14) being connected to the outlet of the pump in order to establish a secondary fluid circuit.