KR20180108249A - Common Flow Field type Fuel Cell Separator and Fuel Cell Stack thereby - Google Patents

Abstract

A fuel cell separator (1) is applied to a fuel cell stack (100) of the present invention. The fuel cell separator (1) is positioned between a left manifold (2-1) and a right manifold (2-2) forming inlet and outlet for hydrogen, air, and cooling water. A channel flow path (8) is formed, which does not interfere with the flow of the hydrogen from the left manifold (2-1) to the right manifold (2-2), the flow of the air from the right manifold (2-2) to the left manifold (2-1), and the flow of the cooling water from the left manifold (2-1) to the right manifold (2-2). By using only one set mold of the same shape, the design is easy and the cost is reduced.

Description

[0001] The present invention relates to a fuel cell stack and a fuel cell stack,

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a fuel cell separator, and more particularly, to a fuel cell stack including a fuel cell separator to which a flow field of a common design is applied.

Generally, a fuel cell stack is mounted on a fuel cell vehicle, and the fuel cell stack electrochemically reacts hydrogen and oxygen to generate electricity while generating water, thereby generating power of the automobile.

To this end, the fuel cell stack includes a unit cell composed of a membrane-electrode assembly, a gas diffusion layer, and a separator.

Specifically, the electrode membrane assembly is located at the very center of the fuel cell stack and has a catalyst layer coated on both sides of the polymer electrolyte membrane. The gas diffusion layer is located at the outer portion of the electrode membrane assembly. The separator is laminated to the outer portion of the gas diffusion layer. The unit cell is composed of one electrode membrane assembly, two gas diffusion layers, and two separator plates. Hundreds to hundreds of unit cells are stacked so that the fuel cell stack can secure an output of a desired scale.

Particularly, the separator is composed of an air electrode / hydrogen separator and a separator for supplying cooling water. By forming a double channel flow field for the air channel / water channel and the cooling water channel, And discharges the water generated by the reaction.

Korean Patent Publication No. 10-2017-0026771 (Mar. 09, 2017)

However, the separator plate is divided into the air electrode / water separator plate and the cooling water separator plate for the gas / water channel, thereby increasing the design and quantity of the mold.

For example, in order to develop a fuel cell stack having one specification, it is inevitable to develop a total of two sets or more of separator plate molds by using one set of air electrode / hydrogen separator plates and one set of cooling water separator plates, The increase in the number of development increases the cost.

In view of the above, the present invention reflects the structure in which the gas and the cooling water are supplied from the manifold so that the respective fluids do not interfere with each other through the channel channel, so that the channel flow design in the form of a mold and a shape common to one separator plate The present invention provides a channel-flow type fuel cell separator and a fuel cell stack in which a metal separator is fabricated from a single set of metal molds of the same shape using common channel flow paths, thereby reducing cost compared to a dual channel flow path.

According to an aspect of the present invention, there is provided a fuel cell separator comprising a manifold that forms an inlet and an outlet for hydrogen, air, and cooling water, And a channel is included in the channel-sharing type.

As a preferred embodiment, the channel flow path may include a hydrogen channel connecting the inlet and the outlet of the hydrogen to form the flow of hydrogen, an air channel connecting the inlet and outlet of the air to form the flow of the air, And a cooling water channel for forming the flow of the cooling water, wherein the hydrogen channel, the air channel, and the cooling water channel are not connected to each other.

The inlet of the hydrogen and the outlet of the air are located together with the inlet of the cooling water which divides the outlet of the hydrogen and the inlet of the air up and down, And an outlet of said cooling water which divides the outlet of said air up and down; Wherein the manifold is divided into a left manifold in which the outlet of the hydrogen, an inlet of the air and an outlet of the cooling water are located, a right manifold in which an inlet of the hydrogen and an outlet of the air and an inlet of the cooling water are located; And the hydrogen channel, the air channel, and the coolant channel are connected to each other between the left manifold and the right manifold.

In a preferred embodiment, the outlet of the hydrogen is connected to one side of the hydrogen channel above the outlet of the cooling water while the inlet of the hydrogen is connected to the other side of the hydrogen channel below the inlet of the cooling water, Is connected to one side of the air channel above the inlet of the cooling water while the inlet of the air is connected to the other side of the air channel below the outlet of the cooling water and the inlet of the cooling water and the outlet of the cooling water are in the same position And is connected to the cooling water channel.

In a preferred embodiment, the hydrogen inlet has a hydrogen return path portion through which the hydrogen exiting the hydrogen channel passes, along with a hydrogen return passage portion into which the hydrogen enters in the manifold, and the hydrogen outlet is connected to the manifold And a hydrogen discharge path portion through which the hydrogen entering the hydrogen channel passes, together with a hydrogen discharge passage portion through which the hydrogen is discharged.

In a preferred embodiment, each of the hydrogen discharge path portion and the hydrogen return path portion is constituted by front and rear slits spaced from each other, and the front slit allows the hydrogen to flow in the manifold, The hydrogen is discharged. The inlet of the air includes an air return path portion through which the air enters from the manifold, and an air return path portion through which the air exiting the air channel passes. The outlet of the air flows from the manifold to the air And an air discharge path portion through which the air entering the air channel with the discharge passage portion passes.

In a preferred embodiment, each of the air discharge path portion and the air return path portion is constituted by front and rear slits spaced apart from each other, and the front slit receives the air from the manifold, So that the air is discharged.

The inlet of the cooling water may include a cooling water path portion through which the cooling water flowing out of the cooling water channel flows together with a cooling water return passage portion into which the cooling water enters from the manifold, And a cooling water discharge path portion through which the cooling water flowing into the cooling water channel flows.

In a preferred embodiment, the manifold and the channel flow path are surrounded by a gasket flange.

According to another aspect of the present invention, there is provided a fuel cell separator comprising a hydrogen discharge passage and a hydrogen discharge passage, a flow of hydrogen from the hydrogen discharge passage and a hydrogen discharge passage, and a flow of air into the air return passage and the air return passage, A left manifold that forms a flow of cooling water to the cooling water discharge passage portion and the cooling water passage portion; The hydrogen return passage portion and the hydrogen return passage portion are formed so as to form a flow in which hydrogen flows into the hydrogen return passage portion and the hydrogen return passage portion and form a flow in which air flows out to the air discharge passage portion and the air discharge path portion, Manifold; A channel channel positioned between the left manifold and the right manifold to connect the left manifold and the right manifold and not to interfere with each flow of the hydrogen, the air, and the cooling water; And a gasket flange surrounding the left manifold, the channel passage, and the right manifold to form a rim.

The cooling water discharge passage portion and the cooling water passage portion divide the hydrogen discharge passage portion, the hydrogen discharge passage portion, the air return passage portion and the air return passage portion up and down, and the cooling water return passage portion and the cooling water passage portion, The cooling water path section divides the hydrogen return passage section, the hydrogen return passage section, the air discharge passage section and the air discharge path section up and down.

In an exemplary embodiment, the hydrogen discharge passage portion and the hydrogen discharge passage portion are connected by a hydrogen channel connecting the hydrogen return passage portion and the hydrogen return passage portion, and the air discharge passage portion and the air discharge passage portion are connected to the air return passage portion And the cooling water discharge path portion and the cooling water path portion are connected by a cooling water channel connecting the cooling water return path portion and the cooling water path portion. Each of the hydrogen channel, the air channel, and the cooling water channel is formed as the channel channel without being connected to each other.

In a preferred embodiment, the hydrogen discharge path portion, the hydrogen return path portion, the air discharge path portion, and the air return path portion are constituted by front and rear slits spaced from each other, and the front slit is filled with hydrogen The rear slit allows the hydrogen to come out.

In order to achieve the above object, the fuel cell stack of the present invention is disposed between a left manifold and a right manifold forming an inlet and an outlet for hydrogen, air, and cooling water, respectively, Wherein the flow of the hydrogen leading to the fold and the flow of the air leading from the right manifold to the left manifold and the flow of the cooling water leading from the left manifold to the right manifold do not interfere with each other, Battery separator; And a unit cell which generates an output by applying an electrode membrane assembly and a gas diffusion layer together with the fuel cell separator.

In order to develop a fuel cell stack having one specification, one air electrode / hydrogen electrode separation plate and one cooling water separation plate are required to be separately manufactured for the air electrode / Although it was necessary to develop more than two sets of separator plates, it is possible to fabricate the separator plates by developing a total of one set of molds without the need for a separate mold through the design improvement of the manifold portion, which can be applied by symmetrically setting one set of shapes.

Further, since the present invention is applied to a metal separator of a fuel cell separator, the cost required for manufacturing the metal separator can be greatly reduced.

Further, since the fuel cell stack of the present invention is fabricated as a metal separator with a greatly reduced manufacturing cost, cost reduction and price competitiveness advantage can be obtained.

FIG. 1 is a configuration diagram of a channel flow sharing type fuel cell bipolar plate according to the present invention, FIG. 2 is a hydrogen flow state of a channel flow sharing type fuel cell bipolar plate according to the present invention, FIG. 4 is a view illustrating a state of the cooling water flowing through the channel-flow sharing type fuel cell bipolar plate according to the present invention, and FIG. 5 is a view showing a state in which the fuel Fig.

Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings, which illustrate exemplary embodiments of the present invention. The present invention is not limited to these embodiments.

Referring to FIG. 1, the fuel cell separator 1 has a left manifold 2-1 and a right manifold 2-2 formed at left and right sides of a predetermined shape, And the right and left manifolds 2-1 and 2-2 and the right and left manifolds 2-1 and 2-2 and the gasket flange 9) to form a rim.

In particular, each of the left and right manifolds 2-1 and 2-2 has the same shape, and the channel flow path 8 is formed in a left manifold (not shown) so that the flows of hydrogen, air, 2-1 from the right manifold 2-2 or the right manifold 2-2 to the left manifold 2-1. As a result, the fuel cell separator 1 is formed into the channel flow sharing type using the left and right manifolds 2-1 and 2-2, thereby greatly reducing the mold design cost and the separation plate manufacturing cost.

Specifically, the left manifold 2-1 includes a hydrogen discharge passage 3-1, a hydrogen discharge passage 4-1, an air return passage 5-2, an air return passage 6-2 A cooling water discharge passage portion 7-1, and a cooling water passage portion 7a. Here, "exhaust" means the exit that escapes, and "return" means the entrance again.

For example, the hydrogen discharge passage portion 3-1 and the hydrogen discharge passage portion 4-1 are formed in the body surface of the left manifold 2-1, and the hydrogen discharge passage portion 4-1 Are composed of front and rear slits 4a and 4b spaced from each other. The hydrogen discharge passage portion 3-1 and the hydrogen discharge passage portion 4-1 are arranged in a straight line on the layout side so that the front and rear slits 4a 4b are positioned close to the channel flow path 8. In particular, each of the front and rear slits 4a and 4b is formed in a straight line shape, while the hydrogen discharge passage portion 3-1 is formed in a substantially "⊂" shape in which a portion facing the cooling water discharge passage portion 7-1 is cut away. As shown in FIG.

For example, the air return passage portion 5-2 and the air return passage portion 6-2 are formed through the body surface of the left manifold 2-1, and the air return passage portion 6-2 Are composed of front and rear slits 6a and 6b spaced from each other. The air return passage portion 5-2 and the air return passage portion 6-2 are arranged in a straight line on the layout side so that the front and rear slits 6a And 6b are located close to the channel flow path 8. Particularly, the air return passages 5-2 are formed in a substantially "⊂" -shaped shape toward the cooling water discharge passage portion 7-1, while each of the front and rear slits 6a, 6b is formed in a straight shape As shown in FIG.

The cooling water discharge passage portion 7-1 is provided between the hydrogen discharge passage portion 3-1 and the air return passage portion 5-2. The cooling water passage portion 7a includes a hydrogen discharge passage portion 4 -1) and the air return path unit 6-2. Particularly, the cooling water discharge passage part 7-1 is formed by a hole drilled in the body surface of the left manifold 2-1, while the cooling water path part 7a is formed in the body surface of the left manifold 2-1, .

Therefore, the left manifold 2-1 has the cooling water discharge passage portion 7-1 as the central section, and the hydrogen discharge passage portion 3-1 and the air return passage portion 5-2 are symmetrical, quot; epsilon "shape.

Specifically, the right manifold 2-2 includes a hydrogen return passage portion 3-2, a hydrogen return passage portion 4-2, an air discharge passage portion 5-1, an air discharge passage portion 6-1 A cooling water return passage portion 7-2, and a cooling water path portion 7a. Here, "exhaust" means the exit that escapes, and "return" means the entrance again.

For example, the hydrogen return passage portion 3-2 and the hydrogen return passage portion 4-2 are formed in the body surface of the right manifold 2-2, and the hydrogen return passage portion 4-2 Are composed of front and rear slits 4a and 4b spaced from each other. The hydrogen return passage portion 3-2 and the hydrogen return passage portion 4-2 are arranged in a straight line on the layout side so that the front and rear slits 4a 4b are positioned close to the channel flow path 8. Particularly, the hydrogen return passage portion 3-2 has an approximately "⊃" shape in which a portion toward the cooling water return passage portion 7-2 is cut away, while each of the front and rear slits 4a, 4b has a straight shape As shown in FIG.

For example, the air discharge passage portion 5-1 and the air discharge passage portion 6-1 are formed in the body surface of the right manifold 2-1, and the air discharge passage portion 6-1 Are composed of front and rear slits 6a and 6b spaced from each other. The air discharge passage portion 5-1 and the air discharge passage portion 6-1 are arranged in a straight line on the layout side so that the front and rear slits 6a And 6b are located close to the channel flow path 8. In particular, each of the front and rear slits 6a and 6b is formed in a straight line shape, while the air discharge passage portion 5-1 has a substantially "⊃" shape in which a portion facing the cooling water return passage portion 7-2 is cut away, As shown in FIG.

For example, the cooling water return passage portion 7-2 separates the hydrogen return passage portion 3-2 from the air discharge passage portion 5-1, and the cooling water passage portion 7a includes a hydrogen return path portion 4 -2 and the air discharge path portion 6-1. Particularly, the cooling water return passage portion 7-2 is formed of a hole drilled in the body surface of the right manifold 2-2, while the cooling water passage portion 7a is formed in the body surface of the right manifold 2-2, . Here, "exhaust" means the exit that escapes, and "return" means the entrance again.

Therefore, the right manifold 2-2 has the cooling water return passage portion 7-2 as its central section, and the hydrogen return passage portion 3-2 and the air discharge passage portion 5-1 are symmetrical, Quot; epsilon "shape.

Specifically, the channel flow path 8 includes a hydrogen channel 8-1 forming a hydrogen flow of a hydrogen electrode, an air channel 8-2 forming an air flow of the air electrode, a cooling water channel 8- 3). Therefore, the channel channel 8 supplies fuel and discharges the water generated by the reaction. In this case, the hydrogen channel 8-1, the air channel 8-2, and the cooling water channel 8-3 are simply represented by a single line, but actually a plurality of complex shapes are formed.

Specifically, the gasket flange 9 surrounds the left manifold 2-1, the channel passage 8, and the right manifold 2-2 to form the rim of the fuel cell separator 1, And provides a space in which the gasket for airtightness is placed when the separator plate 1 forms unit cells with the electrode membrane assembly and the gas diffusion layer.

2 to 4 each illustrate the flow state of hydrogen, air, and cooling water in the fuel cell bipolar plate 1. [ In this case, both surfaces of the fuel cell separator 1 are divided into an upper surface (exposed portion) and a rear surface (non-exposed portion). Also, the signs ①, ②, ③, ④, ⑤, ⑥, ⑦ show flow sequence.

2, the hydrogen channel 8-1 is connected to the hydrogen discharge passage 3-1 of the left manifold 2-1 and the hydrogen discharge passage 4-1 to the right manifold 2-2 The hydrogen is supplied from the left manifold 2-1 to the right manifold 2-2 and supplied as fuel to the hydrogen return passage portion 4-2 through the hydrogen return passage portion 4-2 and the hydrogen return passage portion 3-2 . For example, the hydrogen flows out from the hydrogen discharge passage 3-1 to the upper surface, then enters the rear surface through the front slit 4a of the hydrogen discharge path 4-1 and then flows to the upper surface through the rear slit 4b. Manifold 2-1 and flows to the right manifold 2-2 via the hydrogen channel 8-1 and then flows through the right manifold 2-2 to the rear slit 4b Through the front slit 4a to the upper surface, then through the hydrogen return passage portion 3-2 to the rear surface, thereby forming a flow path supplied with fuel.

 3, the air channel 8-2 connects the air discharge passage portion 5-1 of the right manifold 2-2 and the air discharge passage portion 6-1 to the left manifold 2-1 The air is returned to the left manifold 2-1 from the right manifold 2-2 and supplied as fuel to the left manifold 2-1 by the air return passage portion 6-2 of the left manifold 2-1 and the air return passage portion 5-2 . For example, air flows out from the air discharge passage portion 5-1 to the upper surface, then enters the rear surface through the front slit 6a of the air discharge path portion 6-1, and then exits through the rear slit 6b to the upper surface Flows out from the manifold 2-2 and then flows to the left manifold 2-1 through the air channel 8-2 and then flows through the left manifold 2-1 to the rear slit 6b Through the front slit 6a to the upper surface, and then through the air return passage portion 5-2 into the rear surface, thereby forming a flow path supplied with fuel.

4, the cooling water channel 8-3 is connected to the cooling water discharge passage portion 7-1 of the left manifold 2-1 and the cooling water passage portion 7a in the cooling water of the right manifold 2-2, The water produced by the reaction flows as cooling water and flows from the left manifold 2-1 to the right manifold 2-2 through the path portion 7a and the cooling water return passage portion 7-2, . For example, the cooling water exits the cooling manifold 2-1 along the cooling water path portion 7a out of the cooling water discharge passage portion 7-1, and then flows through the cooling water channel 8-3 to the right manifold 2-1. And flows to the cooling water return passage section 7-2 along the cooling water passage section 7a from the right manifold 2-2 side and flows into the cooling water return passage section 7-2, So as to form a flow path to be discharged to the outside.

Therefore, the hydrogen flows from the left manifold 2-1 to the right manifold 2-2, and the air flows from the right manifold 2-2 to the left manifold 2-1, And flows from the manifold 2-1 to the right manifold 2-2.

5, the fuel cell stack 100 includes a fuel cell separator 1, an electrode membrane assembly 20, a gas diffusion layer 30, a gasket 40, and a seal 50 as a unit cell , And the unit cells are stacked in several tens to several hundreds so that the fuel cell stack 100 can secure an output of a desired scale. Here, the fuel cell separator 1 is the same as the fuel cell separator 1 described with reference to FIGS. 1 to 4.

Specifically, the unit cell is composed of one electrode membrane assembly 20, two gas diffusion layers 30, and two fuel cell separators 1. In this case, the fuel cell separator 1 is divided into upper and lower fuel cell separators 1 - 1 and 1 - 2, and is stacked on the outer portion of the gas diffusion layer 30. The electrode membrane assembly 20 is located at the very center of the fuel cell stack 100 and has a catalyst layer coated on both sides of the polymer electrolyte membrane. The gas diffusion layer 30 is divided into upper and lower gas diffusion layers 30-1 and 30-2, and is positioned at an outer portion of the electrode membrane assembly 20. The gasket 40 is located on the gasket flange 9 of the upper and lower fuel cell separators 1-1 and 1-2 and is compressed and deformed to form airtightness. The seal 50 is positioned between the upper fuel cell separator 1-1 and the lower gas diffusion layer 30-2 and is compressed and deformed to form a hermetic seal.

As described above, the fuel cell stack according to the present embodiment employs a fuel cell separator plate, and the fuel cell separator plate 1 includes a left manifold 2-1, which forms an inlet and an outlet for hydrogen, (2-1) and the right manifold (2-2), and the flow of the hydrogen from the left manifold (2-1) to the right manifold (2-2) 2) to the left manifold (2-1) and the flow of the cooling water leading from the left manifold (2-1) to the right manifold (2-2) do not interfere with each other Since the flow path 8 is provided, only one set mold having the same shape is used, thereby facilitating design and reducing costs.

1: Fuel cell separation plate 1-1, 1-2: Upper and lower fuel cell separation plate
2-1, 2-2: left and right manifold 3-1: hydrogen discharge passage portion
3-2: hydrogen return passage section 4-1: hydrogen discharge passage section
4-2: hydrogen return path sections 4a, 4b, 6a, 6b: front and rear slits
5-1: Air discharge passage portion 5-2: Air return passage portion
6-1: Air discharge path part 6-2: Air return path part
7-1: Cooling water discharge passage part 7-2: Cooling water return passage part
7a: cooling water path portion
8: channel channel 8-1: hydrogen channel
8-2: Air channel 8-3: Cooling water channel
9: Gasket flange
20: electrode membrane assembly 30: gas diffusion layer
30-1, 30-2: upper and lower gas diffusion layers
40: gasket 50: seal
100: Fuel cell stack

Claims (18)

A channel flow path leading to a manifold forming an inlet and an outlet for each of hydrogen and air and cooling water and not interfering with the flow of the hydrogen, the air and the cooling water;
Wherein the channel-flow type fuel cell separator comprises:
[3] The apparatus of claim 2, wherein the channel flow path includes a hydrogen channel connecting the inlet and the outlet of the hydrogen to form the flow of hydrogen, an air channel connecting the inlet and the outlet of the air to form the flow of the air, And the cooling channel is divided into a cooling water channel for forming the flow of the cooling water, and the hydrogen channel, the air channel, and the cooling water channel are not connected to each other.
3. The apparatus of claim 2, wherein the inlet of the hydrogen, the outlet of the air and the inlet of the cooling water are located together, the outlet of the hydrogen and the inlet of the air and the outlet of the cooling water are located together;
Wherein the manifold is divided into a left manifold in which the outlet of the hydrogen, an inlet of the air and an outlet of the cooling water are located, a right manifold in which an inlet of the hydrogen and an outlet of the air and an inlet of the cooling water are located;
And the hydrogen channel, the air channel, and the coolant channel are connected to each other between the left manifold and the right manifold.
[4] The refrigerator according to claim 3, wherein the outlet of the cooling water divides the inlet of the hydrogen and the inlet of the air up and down, and the inlet of the cooling water divides the inlet of the hydrogen and the outlet of the air up and down. Common type fuel cell separator.
[5] The apparatus of claim 4, wherein the outlet of the hydrogen is connected to one side of the hydrogen channel above the outlet of the cooling water while the inlet of the hydrogen is connected to the other side of the hydrogen channel below the inlet of the cooling water, Is connected to one side of the air channel above the inlet of the cooling water while the inlet of the air is connected to the other side of the air channel below the outlet of the cooling water and the inlet of the cooling water and the outlet of the cooling water are in the same position And the cooling water channel is connected to the cooling water channel.
[4] The hydrogen generator according to claim 3, wherein the inlet of the hydrogen has a hydrogen return path portion through which the hydrogen exiting the hydrogen channel passes, together with a hydrogen return passage portion into which the hydrogen enters in the manifold, And a hydrogen discharge passage through which the hydrogen entering the hydrogen channel passes, together with a hydrogen discharge passage through which the hydrogen is discharged.
7. The fuel cell system according to claim 6, wherein each of the hydrogen discharge path portion and the hydrogen return path portion is constituted by front and rear slits spaced from each other, wherein the front slit receives the hydrogen from the manifold, And the hydrogen gas is discharged from the fuel cell.
4. The apparatus of claim 3, wherein the inlet of the air includes an air return path portion through which the air exiting the air channel passes, along with an air return passage portion into which the air enters in the manifold, And an air discharge passage through which the air entering the air channel passes, together with an air discharge passage portion through which the air is discharged.
The air conditioner of claim 8, wherein each of the air discharge path portion and the air return path portion is constituted by front and rear slits spaced from each other, and the front slit receives the air from the manifold, And the air is discharged from the channel-flow-type fuel cell separator.

4. The apparatus of claim 3, wherein the inlet of the cooling water has a cooling water return passage portion into which the cooling water enters from the manifold, and a cooling water path portion through which the cooling water exiting the cooling water channel flows, And a cooling water discharge path portion through which the cooling water flowing into the cooling water channel flows.
The separator according to claim 1, wherein the manifold and the channel channel are surrounded by a gasket flange.
The hydrogen discharge passage portion and the hydrogen discharge passage portion form a flow in which hydrogen flows out and forms a flow in which air flows into the air return passage portion and the air return passage portion and forms a flow of cooling water to the cooling water discharge passage portion and the cooling water passage portion, Manifold;
The hydrogen return passage portion and the hydrogen return passage portion are formed so as to form a flow in which hydrogen flows into the hydrogen return passage portion and the hydrogen return passage portion and forms a flow in which air flows out to the air discharge passage portion and the air discharge path portion, Manifold;
A channel channel positioned between the left manifold and the right manifold to connect the left manifold and the right manifold and not to interfere with each flow of the hydrogen, the air, and the cooling water;
A gasket flange surrounding the left manifold, the channel passage, and the right manifold to form a rim;
Wherein the channel-flow type fuel cell separator comprises:
[Claim 12] The method of claim 12, wherein the cooling water discharge passage portion and the cooling water passage portion divide the hydrogen discharge passage portion, the hydrogen discharge passage portion, the air return passage portion and the air return passage portion up and down, Wherein the cooling water path portion divides the hydrogen return passage portion, the hydrogen return passage portion, the air discharge passage portion, and the air discharge path portion up and down.
[Claim 13] The method of claim 13, wherein the hydrogen discharge passage portion and the hydrogen discharge passage portion are connected by a hydrogen channel connecting the hydrogen return passage portion and the hydrogen return passage portion, and the air discharge passage portion and the air discharge passage portion are connected to the air return passage portion And the cooling water discharge path portion and the cooling water path portion are connected by a cooling water channel connecting the cooling water return path portion and the cooling water path portion.
Wherein each of the hydrogen channel, the air channel, and the cooling water channel is formed as the channel channel without being connected to each other.
[Claim 14] The method according to claim 14, wherein the hydrogen discharge path portion and the hydrogen return path portion are formed of front and rear slits spaced from each other, wherein the hydrogen enters the front slit while the hydrogen comes out from the rear slit Channel channel common type fuel cell separator.
15. The air conditioner according to claim 14, wherein each of the air discharge path portion and the air return path portion is constituted by front and rear slits spaced from each other, wherein the front slit receives the air while the rear slit discharges the air Channel channel common type fuel cell separator.
And a flow control valve which is located between a left manifold and a right manifold which form an inlet and an outlet for hydrogen and air and cooling water, respectively, the flow of hydrogen from the left manifold to the right manifold, A fuel cell separator provided with a channel flow path which does not interfere with the flow of the air leading to the fold and the flow of the cooling water leading from the left manifold to the right manifold;
A unit cell to which the fuel cell separator is applied to generate an output;
Wherein the fuel cell stack includes a fuel cell stack. [Claim 17] The fuel cell stack according to claim 17, wherein the unit cell includes an electrode membrane assembly and a gas diffusion layer together with the fuel cell separator.

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