Fuel cell and its gas distribution device

Abstract

The present invention relates to the field of batteries, and discloses a fuel cell and its gas distribution device. Among them, the gas distribution device includes an electrode inlet gas flow channel and an electrode outlet gas flow channel, and at least one of the electrode inlet gas flow channels is thermally coupled to at least one of the electrode outlet gas flow channels. Through the above technical solution, the gas in the electrode outlet gas flow channel can heat the gas in the electrode inlet gas flow channel, so that it is not necessary to provide an additional heating device for the gas in the electrode inlet gas flow channel, reducing the number of components and the overall volume, and lowering the cost.

Description

Technical Field

[0001] The present invention relates to the field of batteries, and particularly to a gas distribution device for a fuel cell, and also relates to a fuel cell. Background Art

[0002] The cathode and anode of a fuel cell stack are respectively in fluid communication with the gas flow channels of the corresponding gases to supply fuel gas to the fuel cell stack and discharge the product gas. Correspondingly, a gas distribution device needs to be provided for the stack to form a stable intake air flow and exhaust air flow through the gas distribution device.

[0003] In some fuel cell stacks, the cathode reaction and the anode reaction need to be realized under certain temperature conditions. Therefore, an additional gas heating device needs to be provided. Summary of the Invention

[0004] The object of the present invention is to provide a gas distribution device to solve the problem that the existing gas distribution device needs to additionally increase an air flow heating component.

[0005] To achieve the above object, on the one hand, the present invention provides a gas distribution device for a fuel cell, wherein the gas distribution device includes an electrode intake air flow channel and an electrode exhaust air flow channel, and at least one of the electrode intake air flow channels is thermally coupled with at least one of the electrode exhaust air flow channels.

[0006] Optionally, the gas distribution device includes a cathode intake air flow channel, a cathode exhaust air flow channel, and an anode exhaust air flow channel, and the cathode intake air flow channel is thermally coupled with the cathode exhaust air flow channel and the anode exhaust air flow channel respectively.

[0007] Optionally, the gas distribution device includes an anode intake air flow channel that is thermally coupled with one of the cathode exhaust air flow channel and the anode exhaust air flow channel.

[0008] Optionally, the extending paths of the cathode intake air flow channel, the cathode exhaust air flow channel, the anode intake air flow channel, and the anode exhaust air flow channel are located in the same plane.

[0009] Optionally, the cathode intake air flow channel, the cathode exhaust air flow channel, the anode intake air flow channel, and the anode exhaust air flow channel extend circumferentially around the same central axis, and their respective extending paths are located in a plane perpendicular to the central axis.

[0010] Optionally, the anode intake air flow channel, the cathode exhaust air flow channel, the cathode intake air flow channel, and the anode exhaust air flow channel are arranged in sequence from the inside to the outside in the radial direction.

[0011] Optionally, the gas distribution device includes a top plate, a bottom plate, and a plurality of circumferentially extending partition plates located between the top plate and the bottom plate. The plurality of partition plates divide and define the cathode inlet gas flow channel, the cathode outlet gas flow channel, the anode inlet gas flow channel, and the anode outlet gas flow channel.

[0012] Optionally, a plurality of groups of interfaces arranged circumferentially are provided on the top plate. Each group of interfaces includes four interfaces that are correspondingly connected to the cathode inlet gas flow channel, the cathode outlet gas flow channel, the anode inlet gas flow channel, and the anode outlet gas flow channel respectively. Each group of interfaces can correspond to at least one fuel cell stack.

[0013] Optionally, a cathode inlet gas flow channel inlet, a cathode outlet gas flow channel outlet, an anode inlet gas flow channel inlet, and an anode outlet gas flow channel outlet that are correspondingly connected to the cathode inlet gas flow channel, the cathode outlet gas flow channel, the anode inlet gas flow channel, and the anode outlet gas flow channel respectively are provided on the bottom plate.

[0014] Optionally, the gas distribution device includes a cathode inlet gas flow channel inlet pipe, a cathode outlet gas flow channel outlet pipe, an anode inlet gas flow channel inlet pipe, and an anode outlet gas flow channel outlet pipe that are correspondingly connected to the cathode inlet gas flow channel inlet, the cathode outlet gas flow channel outlet, the anode inlet gas flow channel inlet, and the anode outlet gas flow channel outlet respectively. Among them, the cathode inlet gas flow channel inlet pipe and the anode inlet gas flow channel inlet pipe are inclined clockwise relative to the bottom plate, and the cathode outlet gas flow channel outlet pipe and the anode outlet gas flow channel outlet pipe are inclined counterclockwise relative to the bottom plate; or, the cathode inlet gas flow channel inlet pipe and the anode inlet gas flow channel inlet pipe are inclined counterclockwise relative to the bottom plate, and the cathode outlet gas flow channel outlet pipe and the anode outlet gas flow channel outlet pipe are inclined clockwise relative to the bottom plate.

[0015] In addition, the present invention also provides a fuel cell. Among them, the fuel cell includes the gas distribution device of the fuel cell described in the above solution and a fuel cell stack that is fluidly connected to the gas distribution device. The type of structure of the fuel cell stack is not unique, and the gas distribution device can be adjusted according to the type of the fuel cell stack. For example, an air-open fuel cell stack is also applicable.

[0016] Optionally, the fuel cell includes a fuel cell stack array formed by arranging a plurality of the fuel cell stacks. Anode inlet holes, anode outlet holes, cathode inlet holes, and cathode outlet holes that penetrate are provided in the fuel cell stacks. In each fuel cell stack array, the anode inlet holes, the anode outlet holes, the cathode inlet holes, and the cathode outlet holes are respectively connected.

[0017] Optionally, the fuel cell includes a sealing plate. One end of the fuel cell stack array is joined to the gas distribution device, and the other end is joined to the sealing plate.

[0018] Through the above technical solution, the gas in the electrode out-gas flow channel can heat the gas in the electrode in-gas flow channel, so that there is no need to additionally provide a heating device for the gas in the electrode in-gas flow channel, reducing the number of components and the overall volume, and lowering the cost. Description of the Drawings

[0019] Figure 1 is a schematic internal structure diagram of the gas distribution device according to an embodiment of the present invention;

[0020] Figure 2 is a perspective view of the gas distribution device according to an embodiment of the present invention;

[0021] Figure 3 is a perspective view of the fuel cell stack according to an embodiment of the present invention;

[0022] Figure 4 is a perspective view of the fuel cell according to an embodiment of the present invention.

[0023] Description of the Reference Numerals

[0024] 1 - cathode in-gas flow channel, 2 - cathode out-gas flow channel, 3 - anode in-gas flow channel, 4 - anode out-gas flow channel, 5 - top plate, 6 - separator, 7 - bottom plate, 8 - cathode in-gas flow channel inlet, 9 - cathode out-gas flow channel outlet, 10 - anode in-gas flow channel inlet, 11 - anode out-gas flow channel outlet, 12 - cathode in-gas flow channel outlet, 13 - cathode out-gas flow channel inlet, 14 - anode in-gas flow channel outlet, 15 - anode out-gas flow channel inlet, 16 - fuel cell stack, 17 - cathode gas inlet hole, 18 - cathode gas outlet hole, 19 - anode gas inlet hole, 20 - anode gas outlet hole, 21 - sealing plate. Detailed Embodiments

[0025] The following describes in detail the specific embodiments of the present invention with reference to the accompanying drawings. It should be understood that the specific embodiments described herein are only for the purpose of illustrating and explaining the present invention, and are not intended to limit the present invention.

[0026] The present invention provides a gas distribution device for a fuel cell, wherein the gas distribution device includes an electrode in-gas flow channel and an electrode out-gas flow channel, and at least one of the electrode in-gas flow channels is thermally coupled to at least one of the electrode out-gas flow channels.

[0027] The fuel cell stack includes a cathode and an anode. The gas distribution device can supply fuel gas to the fuel cell stack, and the gas used by the fuel cell stack can be transported away through the gas distribution device. The gas distribution device can include one or two electrode in-gas flow channels, such as one or both of the cathode in-gas flow channel 1 and the anode in-gas flow channel 3, and includes one or two electrode out-gas flow channels, such as one or both of the cathode out-gas flow channel 2 and the anode out-gas flow channel 4.

[0028] When the fuel cell stack undergoes an electrochemical reaction, the generated heat is transferred to the electrochemical reaction gas. That is, the gas temperature in the electrode outlet gas flow channel is relatively high, while the gas temperature in the electrode inlet gas flow channel is relatively low. After heat conduction with the electrode outlet gas flow channel, the gas temperature in the inlet gas flow channel can be increased to reach the appropriate temperature for the electrochemical reaction.

[0029] Through the above technical solution, the gas in the electrode outlet gas flow channel can heat the gas in the electrode inlet gas flow channel. Thus, it is not necessary to additionally provide a heating device for the gas in the electrode inlet gas flow channel, reducing the number of components and the overall volume, and lowering the cost.

[0030] Specifically, the gas distribution device includes a cathode inlet gas flow channel 1, a cathode outlet gas flow channel 2, and an anode outlet gas flow channel 4. The cathode inlet gas flow channel 1 is thermally coupled to the cathode outlet gas flow channel 2 and the anode outlet gas flow channel 4 respectively.

[0031] The cathode inlet gas flow channel 1 can supply corresponding gas to the cathode of the fuel cell stack and can be discharged through the cathode outlet gas flow channel 2. The anode outlet gas flow channel 4 can discharge the gas flow from the anode of the fuel cell stack.

[0032] The cathode inlet gas flow channel 1 can conduct heat exchange with the cathode outlet gas flow channel 2 and the anode outlet gas flow channel 4. The temperature of the cathode inlet gas flow in the cathode inlet gas flow channel 1 is relatively low, while the temperatures of the cathode outlet gas flow and the anode outlet gas flow from the fuel cell stack are relatively high. The cathode inlet gas flow in the cathode inlet gas flow channel 1 can absorb the heat of the cathode gas flow and the anode gas flow discharged from the fuel cell stack, raising the temperature of the cathode inlet gas flow to a temperature range more suitable for the electrochemical reaction of the fuel cell stack, and at the same time reducing the temperature of the discharged gas.

[0033] The cathode inlet gas flow channel 1 can be connected to the cathode outlet gas flow channel 2 and the anode outlet gas flow channel 4 through a heat conducting member to allow heat exchange, and the three gas flow channels are separated from each other and remain independent.

[0034] In this solution, the gas in the cathode outlet gas flow channel and the anode outlet gas flow channel can heat the gas in the cathode inlet gas flow channel. Thus, it is not necessary to additionally provide a heating device for the gas in the cathode inlet gas flow channel, reducing the number of components and the overall volume, and lowering the cost.

[0035] In addition, the gas distribution device includes an anode inlet gas flow channel 3 that is thermally coupled to one of the cathode outlet gas flow channel 2 and the anode outlet gas flow channel 4. The anode inlet gas flow channel 3 can supply corresponding gas flow to the anode of the fuel cell stack. Due to the presence of the cathode inlet gas flow channel 1, it only forms heat conduction with one of the outlet gas flow channels to heat the gas flow about to reach the anode of the fuel cell stack, so that the anode inlet gas flow reaches the temperature range of the electrochemical reaction of the fuel cell stack.

[0036] Among them, the extending paths of the cathode inlet gas flow channel 1, the cathode outlet gas flow channel 2, the anode inlet gas flow channel 3, and the anode outlet gas flow channel 4 are located in the same plane. The cathode inlet gas flow channel 1, the cathode outlet gas flow channel 2, the anode inlet gas flow channel 3, and the anode outlet gas flow channel 4 are arranged side by side on the same plane, and the extending paths of the four flow channels are co-present, improving the integration degree. Among them, the cathode inlet gas flow channel 1 is located between the cathode outlet gas flow channel 2 and the anode outlet gas flow channel 4. In particular, this plane can be perpendicular to the stacking direction of the stack. In other embodiments, the four flow channels can also be arranged around the same axis.

[0037] Furthermore, the cathode inlet gas flow channel 1, the cathode outlet gas flow channel 2, the anode inlet gas flow channel 3, and the anode outlet gas flow channel 4 extend circumferentially around the same central axis, and their respective extending paths are located in a plane perpendicular to the central axis. As Figure 1 shown, the cathode inlet gas flow channel 1, the cathode outlet gas flow channel 2, the anode inlet gas flow channel 3, and the anode outlet gas flow channel 4 are all formed in a ring shape and are located at the same plane. The annular flow path can reduce the resistance when the gas flows through it, making the pressure drop decrease, and the pressures at various positions are closer. Correspondingly, the gas pressures input or output by the gas distribution device to different positions of the stack are also basically the same.

[0038] Among them, the anode inlet gas flow channel 3 is located radially inside the cathode inlet gas flow channel 1. The cathode outlet gas flow channel 2, the cathode inlet gas flow channel 1, the anode outlet gas flow channel 4, and the anode inlet gas flow channel 3 are arranged in sequence from the outside to the inside in the radial direction. Among them, the gas flow rate of the cathode inlet gas flow channel 1 is greater than that of the anode inlet gas flow channel 3. Therefore, the anode inlet gas flow channel 3 can be arranged at the innermost side in the radial direction, so that the cathode inlet gas flow channel 1 has a larger volume. This is also the reason for arranging the cathode inlet gas flow channel 1 between the two outlet gas flow channels (absorbing more heat). Similarly, the cathode outlet gas flow channel is arranged between the two inlet gas flow channels, which can better heat the inlet gas.

[0039] Specifically, the gas distribution device includes a top plate 5, a bottom plate 7, and a plurality of partition plates 6 extending circumferentially between the top plate 5 and the bottom plate 7. The plurality of partition plates 6 divide and define the cathode inlet gas flow channel 1, the cathode outlet gas flow channel 2, the anode inlet gas flow channel 3, and the anode outlet gas flow channel 4. Refer to Figure 1 and Figure 2 shown, the gas distribution device is generally formed in a disc shape. The top plate 5, the bottom plate 7, and the partition plates 6 enclose a plurality of annular gas flow channels. Each gas flow channel is formed by a part of the top plate 5, a part of the bottom plate 7, and the partition plates 6 on both radial sides. There is no flow channel provided in the central part of the gas distribution device. The central part of the top plate 5 can provide support for other components or place other various functional components such as gas collection devices, burners, etc.

[0040] Further, multiple groups of interfaces arranged circumferentially are provided on the top plate 5. Each group of interfaces includes four interfaces respectively and correspondingly connected to the cathode inlet air flow channel 1, the cathode outlet air flow channel 2, the anode inlet air flow channel 3, and the anode outlet air flow channel 4. Each group of interfaces can correspond to at least one fuel cell stack. Multiple fuel cell stacks (or a fuel cell stack array) can be provided on the top plate 5. Each group of interfaces on the top plate 5 includes a cathode inlet air flow channel outlet 12, a cathode outlet air flow channel inlet 13, an anode inlet air flow channel outlet 14, and an anode outlet air flow channel inlet 15. One group of interfaces is connected to each air hole of a fuel cell stack (or a fuel cell stack array, i.e., multiple fuel cell stacks) to allow the fuel cell stack to inhale and discharge air flow.

[0041] In addition, as Figure 1 shown, a cathode inlet air flow channel inlet 8, a cathode outlet air flow channel outlet 9, an anode inlet air flow channel inlet 10, and an anode outlet air flow channel outlet 11 which are respectively and correspondingly connected to the cathode inlet air flow channel 1, the cathode outlet air flow channel 2, the anode inlet air flow channel 3, and the anode outlet air flow channel 4 are also provided on the bottom plate 7.

[0042] Furthermore, a cathode inlet air flow channel inlet 8, a cathode outlet air flow channel outlet 9, an anode inlet air flow channel inlet 10, and an anode outlet air flow channel outlet 11 which are respectively and correspondingly connected to the cathode inlet air flow channel 1, the cathode outlet air flow channel 2, the anode inlet air flow channel 3, and the anode outlet air flow channel 4 are provided on the bottom plate 7. As Figure 1 shown, a cathode inlet air flow channel inlet 8, a cathode outlet air flow channel outlet 9, an anode inlet air flow channel inlet 10, and an anode outlet air flow channel outlet 11 are provided on the bottom plate to supply gas to the cathode inlet air flow channel 1 and the anode inlet air flow channel 3 and discharge the gas from the cathode outlet air flow channel 2 and the anode outlet air flow channel 4.

[0043] Further, the air distribution device includes a cathode inlet air flow channel inlet pipe, a cathode outlet air flow channel outlet pipe, an anode inlet air flow channel inlet pipe, and an anode outlet air flow channel outlet pipe which are respectively and correspondingly connected to the cathode inlet air flow channel inlet 8, the cathode outlet air flow channel outlet 9, the anode inlet air flow channel inlet 10, and the anode outlet air flow channel outlet 11. Among them, the cathode inlet air flow channel inlet pipe and the anode inlet air flow channel inlet pipe are inclined clockwise with respect to the bottom plate 7, and the cathode outlet air flow channel outlet pipe and the anode outlet air flow channel outlet pipe are inclined counterclockwise with respect to the bottom plate 7; or the cathode inlet air flow channel inlet pipe and the anode inlet air flow channel inlet pipe are inclined counterclockwise with respect to the bottom plate 7, and the cathode outlet air flow channel outlet pipe and the anode outlet air flow channel outlet pipe are inclined clockwise with respect to the bottom plate 7.

[0044] The above four pipe fittings can be used for transporting gas. Each pipe fitting is not perpendicular to the surface of the bottom plate 7, and there is a certain inclination angle, such that the airflow entering the flow channel also has an inclination angle with the bottom plate 7, enabling the airflow to have a component velocity direction parallel to the bottom plate 7 in the flow channel, strengthening the gas flow, and controlling the direction of the airflow in the flow channel by controlling the angle of the pipe fitting.

[0045] Specifically, the pipe fitting is inclined relative to the bottom plate 7 in the clockwise or counterclockwise direction. This means that the lower end (the end far from the bottom plate 7) of the pipe fitting is inclined along the circumferential direction in the clockwise or counterclockwise direction relative to the upper end (the end connected to the bottom plate 7), so that the airflow entering or leaving the flow channel through the pipe fitting has a clockwise or counterclockwise flow velocity (the component velocity parallel to the bottom plate); among them, the circumferential flow directions of the airflow in the cathode inlet flow channel 1 and the anode inlet flow channel 3 are the same, and the circumferential flow directions of the cathode outlet flow channel 2 and the anode outlet flow channel 4 are the same, but are opposite to the circumferential flow directions of the airflow in the cathode inlet flow channel 1 and the anode inlet flow channel 3. That is to say, the flow direction of the outlet flow channel is opposite to that of the inlet flow channel, which is beneficial to the heat exchange between the gas discharged from the fuel cell stack and the gas to reach the fuel cell stack.

[0046] In addition, the present invention also provides a fuel cell, wherein the fuel cell includes the gas distribution device of the fuel cell according to the above solution and a fuel cell stack fluidly connected to the gas distribution device. The fuel cell stack and each air hole can be connected to each airflow channel of the gas distribution device to realize gas supply and exhaust. In some embodiments, the cathode of the fuel cell stack is open and is directly connected to the air. A gas circulation space can be provided near the cathode of the fuel cell stack, and the cathode inlet flow channel and the cathode outlet flow channel of the gas distribution device are connected to the gas circulation space to realize gas circulation.

[0047] Specifically, the fuel cell includes a fuel cell stack array formed by arranging a plurality of the fuel cell stacks. The fuel cell stack is provided with a penetrating anode inlet hole 19, an anode outlet hole 20, a cathode inlet hole 17, and a cathode outlet hole 18. In each fuel cell stack array, the anode inlet hole 19, the anode outlet hole 20, the cathode inlet hole 17, and the cathode outlet hole 18 are respectively connected. As Figure 3 shown, the fuel cell stack 16 includes an anode inlet hole 19, an anode outlet hole 20, a cathode inlet hole 17, and a cathode outlet hole 18. When a plurality of fuel cell stacks are stacked, the stacking direction is consistent with the extending direction of each air hole, so that the air holes of the plurality of fuel cell stacks are connected, and thus a plurality of fuel cell stacks can be connected in series to form a fuel cell stack array to realize gas supply and exhaust. As Figure 4 shown, the stacking direction of the fuel cell stacks is perpendicular to the surface of the top plate 5, and the arrangement direction of each airflow channel in each gas distribution device is parallel to the surface of the top plate 5. Through such a design method of the fuel cell stack and the airflow channel, the overall structure can be made more compact.

[0048] In addition, the fuel cell includes a sealing plate 21. One end of the stack array is joined to the gas distribution device, and the other end is joined to the sealing plate 21. The anode inlet hole 19, the anode outlet hole 20, the cathode inlet hole 17, and the cathode outlet hole 18 at the end of the stack array away from the gas distribution device are not communicated with other stacks. Therefore, they can be sealed by the sealing plate 21 to avoid gas leakage.

[0049] The preferred embodiments of the present invention have been described in detail above in conjunction with the accompanying drawings. However, the present invention is not limited thereto. Within the scope of the technical concept of the present invention, various simple modifications can be made to the technical solutions of the present invention, including combinations of various specific technical features in any suitable manner. To avoid unnecessary repetition, the present invention will not separately describe various possible combination methods. However, these simple modifications and combinations should also be regarded as the content disclosed by the present invention and fall within the protection scope of the present invention.

Claims

1. A gas distribution device for a fuel cell, characterized in that, the gas distribution device includes an electrode inlet gas flow channel and an electrode outlet gas flow channel, at least one of the electrode inlet gas flow channels is thermally coupled with at least one of the electrode outlet gas flow channels, the gas distribution device includes a cathode inlet gas flow channel (1), a cathode outlet gas flow channel (2), and an anode outlet gas flow channel (4), the cathode inlet gas flow channel (1) is thermally coupled with the cathode outlet gas flow channel (2) and the anode outlet gas flow channel (4) respectively, the gas distribution device includes an anode inlet gas flow channel (3) that is thermally coupled with one of the cathode outlet gas flow channel (2) and the anode outlet gas flow channel (4), the extending paths of the cathode inlet gas flow channel (1), the cathode outlet gas flow channel (2), the anode inlet gas flow channel (3), and the anode outlet gas flow channel (4) are located in the same plane, the cathode inlet gas flow channel (1), the cathode outlet gas flow channel (2), the anode inlet gas flow channel (3), and the anode outlet gas flow channel (4) extend circumferentially around the same central axis, and their extending paths are located in a plane perpendicular to the central axis, the gas flow rate of the cathode inlet gas flow channel (1) is greater than the gas flow rate of the anode inlet gas flow channel (3), the anode inlet gas flow channel (3), the cathode outlet gas flow channel (2), the cathode inlet gas flow channel (1), and the anode outlet gas flow channel (4) are arranged in sequence from the inside to the outside in the radial direction, the gas distribution device includes a top plate (5), a bottom plate (7), and a plurality of circumferentially extending partition plates (6) located between the top plate (5) and the bottom plate (7), and the plurality of partition plates (6) separate and define the cathode inlet gas flow channel (1), the cathode outlet gas flow channel (2), the anode inlet gas flow channel (3), and the anode outlet gas flow channel (4).

2. The gas distribution device for a fuel cell according to claim 1, characterized in that, a plurality of groups of interfaces arranged circumferentially are provided on the top plate (5), and each group of interfaces includes four interfaces that are correspondingly connected to the cathode inlet gas flow channel (1), the cathode outlet gas flow channel (2), the anode inlet gas flow channel (3), and the anode outlet gas flow channel (4) respectively, and each group of interfaces can correspond to at least one fuel cell stack.

3. The gas distribution device for a fuel cell according to claim 1, characterized in that, a cathode inlet gas flow channel inlet (8), a cathode outlet gas flow channel outlet (9), an anode inlet gas flow channel inlet (10), and an anode outlet gas flow channel outlet (11) that are correspondingly connected to the cathode inlet gas flow channel (1), the cathode outlet gas flow channel (2), the anode inlet gas flow channel (3), and the anode outlet gas flow channel (4) respectively are provided on the bottom plate (7).

4. The gas distribution device for a fuel cell according to claim 3, characterized in that, the gas distribution device includes a cathode inlet gas flow channel inlet pipe, a cathode outlet gas flow channel outlet pipe, an anode inlet gas flow channel inlet pipe, and an anode outlet gas flow channel outlet pipe that are correspondingly connected to the cathode inlet gas flow channel inlet (8), the cathode outlet gas flow channel outlet (9), the anode inlet gas flow channel inlet (10), and the anode outlet gas flow channel outlet (11) respectively, wherein, The inlet pipe of the cathode inlet gas flow channel and the inlet pipe of the anode inlet gas flow channel are inclined clockwise with respect to the bottom plate (7), and the outlet pipe of the cathode outlet gas flow channel and the outlet pipe of the anode outlet gas flow channel are inclined counterclockwise with respect to the bottom plate (7); or, The inlet pipe of the cathode inlet gas flow channel and the inlet pipe of the anode inlet gas flow channel are inclined counterclockwise with respect to the bottom plate (7), and the outlet pipe of the cathode outlet gas flow channel and the outlet pipe of the anode outlet gas flow channel are inclined clockwise with respect to the bottom plate (7).

5. A fuel cell, characterized in that the fuel cell comprises a gas distribution device of the fuel cell according to any one of claims 1-4 and a stack fluidly connected to the gas distribution device.

6. The fuel cell according to claim 5, characterized in that the fuel cell comprises a stack array formed by arranging a plurality of the stacks, and an anode inlet hole (19), an anode outlet hole (20), a cathode inlet hole (17) and a cathode outlet hole (18) are provided through the stack. In each stack array, the anode inlet hole (19), the anode outlet hole (20), the cathode inlet hole (17) and the cathode outlet hole (18) are respectively communicated.

7. The fuel cell according to claim 6, characterized in that the fuel cell comprises a sealing plate (21), one end of the stack array is joined to the gas distribution device, and the other end is joined to the sealing plate (21).

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