Drainage structure and fuel cell

Abstract

The utility model provides a drainage structure and a fuel cell, the drainage structure is arranged in the fuel cell, the drainage structure comprises a drainage pipe arranged in a gas outlet channel of the fuel cell, and the gas outlet channel is used for allowing hydrogen or oxygen to flow out; the liquid inlet end of the drainage pipe is connected with a blind end collector plate of the fuel cell, the liquid inlet end of the drainage pipe is provided with a communication port communicated with the gas outlet channel, the liquid outlet end of the drainage pipe is connected with a gas port collector plate of the fuel cell, and the liquid outlet end of the drainage pipe is communicated with a liquid drainage channel on the fuel cell. According to the drainage structure, the drainage pipe is arranged in the air outlet channel, the liquid inlet end of the drainage pipe is connected with the blind end collector plate, and the liquid outlet end of the drainage pipe is connected with the air port collector plate, so that the connection reliability of the drainage pipe is improved, and the defect that a traditional drainage pipe is fixed only through a frame of a membrane electrode is overcome; therefore, the reliability of the drainage structure and the use performance of the fuel cell are improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to fuel cell technical field, especially a kind of drainage structure, and simultaneously, the utility model also relates to a kind of fuel cell with the drainage structure. BACKGROUND

[0002] The traditional fuel cell includes gas port end plate, gas port current collector plate, first dummy cell, stack core, second dummy cell, blind end current collector plate and blind end plate arranged in sequence, wherein, gas port end plate, gas port current collector plate, first dummy cell, stack core and second dummy cell cooperate to form oxygen outlet channel and hydrogen outlet channel.

[0003] Wherein, in the cathode of fuel cell, oxygen reacts with proton and electron transmitted from anode through proton exchange membrane to generate water, which is the main source of water in oxygen outlet channel. Although the main anode reaction of fuel cell is that hydrogen loses electron to generate proton and electron, but in actual process, some side reactions may occur to cause water generation. Therefore, water is generated in oxygen outlet channel and hydrogen outlet channel.

[0004] In the process of vehicle climbing, because fuel cell is in inclined state, water in oxygen outlet channel and hydrogen outlet channel is all gathered at the bottom of corresponding channel, so as to cause poor drainage effect, which is not conducive to the use performance and safety of fuel cell. Although drainage pipe is arranged in oxygen outlet channel and hydrogen outlet channel in prior art to improve drainage effect, but drainage pipe is only fixed by the frame of membrane electrode, and the frame material is soft, so the fixing effect of drainage pipe is poor. If drainage pipe loosens or comes off, water may leak to other parts of fuel cell, affect the flow of gas and the reaction of electrode, so as to reduce the performance of fuel cell. SUMMARY

[0005] Therefore, the utility model aims at providing a drainage structure to facilitate the drainage of accumulated water in gas outlet channel, and has good reliability.

[0006] To achieve the above-mentioned purpose, the technical scheme of the utility model is as follows:

[0007] A drainage structure is arranged in fuel cell, which includes drainage pipe arranged in gas outlet channel of fuel cell, and the gas outlet channel is used for hydrogen or oxygen outflow. The liquid inlet end of drainage pipe is connected with blind end current collector plate of fuel cell, and the liquid inlet end of drainage pipe is provided with communication port communicated with gas outlet channel. The liquid outlet end of drainage pipe is connected with gas port current collector plate of fuel cell, and the liquid outlet end of drainage pipe is communicated with liquid discharge channel on fuel cell.

[0008] Further, the liquid inlet end of drainage pipe is connected with blind end current collector plate by plug-in assembly.

[0009] Further, the blind end collecting plate is provided with an insertion block, and the blind end collecting plate is connected with the liquid inlet end of the drain pipe through the insertion block.

[0010] Further, the communication port extends to the end face of the liquid inlet end of the drain pipe.

[0011] The outer peripheral wall of the insertion block is provided with a protrusion connected with part of the communication port.

[0012] Further, the gas outlet channel is two, one of which is used for hydrogen gas outflow, and the other is used for oxygen gas outflow, and the drain pipe is arranged in at least one of the gas outlet channels; and / or,

[0013] The gas port collecting plate is provided with a clamping part, and the drain pipe is connected with the gas port collecting plate through the clamping part.

[0014] Further, the gas port collecting plate is provided with a protruding block arranged in the gas outlet channel, and the clamping part comprises a clamping hole arranged on the protruding block, and the clamping hole is arranged in communication with the gas outlet channel.

[0015] Further, the clamping hole comprises a clamping part clamped with the drain pipe, and a communication part communicating the clamping part with the gas outlet channel, and the width of the communication part gradually decreases along the protruding direction of the protruding block; or,

[0016] The communication part of the clamping hole and the gas outlet channel is provided with a limiting protrusion, and the limiting protrusion is used for blocking the drain pipe from being pulled out of the clamping hole.

[0017] Further, the frame of the membrane electrode of the fuel cell is provided with a guide part arranged in the gas outlet channel, and the guide part is used for guiding the installation of the drain pipe in the gas outlet channel.

[0018] Further, the guide part comprises a guide block arranged on the frame, and a guide hole arranged on the guide block, and the drain pipe is arranged through the guide hole.

[0019] Compared with the prior art, the utility model has the following advantages:

[0020] The drainage structure, through setting the drainage pipe in the air outlet channel, and the liquid inlet end of the drainage pipe is connected with the blind end current collecting plate, the liquid outlet end of the drainage pipe is connected with the air port current collecting plate, is favorable to improve the connection reliability of the drainage pipe, the negative pressure formed at the outlet end of the air outlet channel can suck the accumulated water into the drainage pipe, and the accumulated water flows into the liquid outlet channel on the fuel cell through the drainage pipe, thereby being favorable to avoid the deficiency that the traditional drainage pipe is only fixed through the frame of the membrane electrode, thereby being favorable to improve the reliability of the drainage structure and the use performance of the fuel cell.

[0021] In addition, the liquid inlet end of the drainage pipe is connected with the blind end current collecting plate through plug-in connection, which is favorable to quickly insert the liquid inlet end of the drainage pipe into the blind end current collecting plate, thereby being favorable to improve the installation efficiency. The plug has a simple structure and is easy to be formed, and has good plug-in effect with the liquid inlet end of the drainage pipe. The communication port extends to the end face of the liquid inlet end, which is favorable to improve the effect of the accumulated water flowing into the drainage pipe. The protrusion on the plug is provided with plug-in connection with the communication port, which is favorable to further ensure the plug-in effect between the liquid inlet end of the drainage pipe and the protrusion. The air outlet channel is two, and the drainage pipe is arranged in at least one of the air outlet channels, which is favorable to flexibly arrange the position of the drainage pipe according to the use requirement; the drainage pipe is connected with the air port current collecting plate through clamping connection, which is favorable to improve the installation efficiency.

[0022] In addition, the clamping part in the clamping hole is clamped with the drainage pipe, and the width of the communication part is changed in specification, which is favorable to the drainage pipe to pass through the clamping hole and be clamped in the clamping hole, and also is favorable to prevent the drainage pipe from being taken out of the clamping hole; the drainage pipe is prevented from being taken out of the clamping hole by the limiting protrusion, which is also favorable to improve the clamping effect between the drainage pipe and the clamping hole. The guide part arranged on the frame is favorable to improve the installation efficiency of the drainage pipe. The guide block and the guide hole have a simple structure, are easy to be formed, have good guiding effect, and are favorable to improve the assembly efficiency of the fuel cell.

[0023] In addition, another purpose of the utility model is to provide a fuel cell.

[0024] The fuel cell is favorable to drain the accumulated water in the air outlet channel, thereby improving the use performance of the fuel cell. BRIEF DESCRIPTION OF DRAWINGS

[0025] The drawings constituting a part of the utility model are used to provide further understanding of the utility model, and the illustrative embodiment of the utility model and the description thereof are used to explain the utility model, and do not constitute improper limitation to the utility model. In the drawings:

[0026] Figure 1 It is the structural schematic view of part of the fuel cell and the drainage pipe of the utility model embodiment one;

[0027] Figure 2The structural schematic view of the plug-in block according to the embodiment one of the utility model;

[0028] Figure 3 The structural schematic view of the plug-in block according to the embodiment one of the utility model;

[0029] Figure 4 The partial structural schematic view of the drain pipe according to the embodiment one of the utility model;

[0030] Figure 5 The structural schematic view of the air port current collecting plate and the drain pipe in the clamping state according to the embodiment one of the utility model;

[0031] Figure 6 The structural schematic view of the clamping hole according to the embodiment one of the utility model;

[0032] Figure 7 The structural schematic view of the clamping hole according to the embodiment one of the utility model;

[0033] Figure 8 The structural schematic view of the membrane electrode according to the embodiment one of the utility model.

[0034] Mark explanation:

[0035] 1, air port current collecting plate;2, blind end current collecting plate;3, drain pipe;4, core;

[0036] 100, gas outlet passage;101, protruding block;102, clamping hole;1021, clamping part;1022, communication part;103, limiting protrusion;

[0037] 201, plug-in block;2011, protrusion;

[0038] 301, communication port;

[0039] 400, membrane electrode;401, frame;4011, guide block;4012, guide hole. Specific implementation

[0040] It should be noted that the embodiments in the utility model and the features in the embodiments can be combined with each other without conflict.

[0041] In the description of the utility model, it needs to explain, if appearing "upper", "lower", "inner", "back" and so on indicating orientation or positional relation term, it is based on the orientation or positional relation shown in the drawing, only for the convenience of describing the utility model and simplifying the description, and is not indicating or implying that the indicated device or element must have a specific orientation, a specific orientation structure and operation, therefore cannot be understood as the limitation to the utility model. In addition, if the terms "first", "second" and so on appear, they are also only for the purpose of description, and cannot be understood as indicating or implying relative importance.

[0042] The utility model will be described in detail below with reference to the drawings and in combination with embodiments.

[0043] Embodiment one

[0044] This embodiment relates to a drainage structure, which is beneficial to drain the accumulated water in the fuel cell gas outlet channel 100 and has good reliability.

[0045] In terms of overall structure, the drainage structure described in the embodiment is arranged in the fuel cell, which comprises a drainage pipe 3 arranged in the gas outlet channel 100 of the fuel cell, and the gas outlet channel 100 is used for hydrogen or oxygen outflow. The liquid inlet end of the drainage pipe 3 is connected with the blind end current collector plate 2 of the fuel cell, and the liquid inlet end of the drainage pipe 3 is provided with a communication port 301 in communication with the gas outlet channel 100. The liquid outlet end of the drainage pipe 3 is connected with the gas port current collector plate 1 of the fuel cell, and the liquid outlet end of the drainage pipe 3 is in communication with the liquid drainage channel on the fuel cell.

[0046] The drainage structure described in the embodiment is beneficial to improve the connection reliability of the drainage pipe 3 by arranging the drainage pipe 3 in the gas outlet channel 100, connecting the liquid inlet end of the drainage pipe 3 with the blind end current collector plate 2, and connecting the liquid outlet end of the drainage pipe 3 with the gas port current collector plate 1. The negative pressure formed at the outlet end of the gas outlet channel 100 can suck the accumulated water into the drainage pipe 3, and the accumulated water can flow into the liquid drainage channel on the fuel cell through the drainage pipe 3, thereby avoiding the deficiency that the conventional drainage pipe 3 is only fixed by the frame 401 of the membrane electrode 400, and improving the reliability of the drainage structure and the use performance of the fuel cell.

[0047] Based on the overall introduction above, part of the structure of the drainage structure described in the embodiment is shown in Figure 1 The fuel cell comprises a gas port end plate, a gas port current collector plate 1, a first dummy cell, a stack core 4, a second dummy cell, a blind end current collector plate 2 and a blind end end plate arranged in sequence. The two ends of the gas port end plate, the gas port current collector plate 1, the first dummy cell, the stack core 4 and the second dummy cell are respectively provided with three through holes, and the through holes at the same end are stacked to form channels.

[0048] The two gas outlet channels 100 in the embodiment are used for hydrogen and oxygen to flow out respectively, and the drain pipe 3 is arranged in at least one of the gas outlet channels 100. The two gas outlet channels 100 are arranged at two ends of the bottom of the fuel cell respectively. For the convenience of description, the gas outlet channel 100 for oxygen is referred to as an oxygen outlet channel, and the gas outlet channel 100 for hydrogen is referred to as a hydrogen outlet channel. The oxygen outlet channel is arranged corresponding to the anode, and the hydrogen outlet channel is arranged corresponding to the cathode. Considering that the amount of water accumulated in the hydrogen outlet channel is greater than that in the oxygen outlet channel, the drain pipe 3 can be arranged only in the hydrogen outlet channel, or only in the oxygen outlet channel, or in both the hydrogen outlet channel and the oxygen outlet channel. In this way, the arrangement position of the drain pipe 3 can be selected flexibly according to the use requirement.

[0049] As a preferred connection mode, in the embodiment, the liquid inlet end of the drain pipe 3 is connected to the blind end current collector plate 2 in a plug-in manner. In this way, the installation efficiency of the drain pipe 3 on the blind end current collector plate 2 is improved. At the same time, the drain pipe 3 is connected to the blind end current collector plate 2 in a plug-in manner, which is also convenient for the maintenance and replacement of the drain pipe 3. When the drain pipe 3 is disassembled, it only needs to be pulled out of the blind end current collector plate 2, thereby reducing the maintenance cost and difficulty of the drain pipe 3.

[0050] As shown in Figures 2 to 4 , the blind end current collector plate 2 is provided with a plug block 201, and the blind end current collector plate 2 is connected to the liquid inlet end of the drain pipe 3 in a plug-in manner through the plug block 201. Here, the plug block 201 has a simple structure and is easy to form, and has a good plug-in effect with the liquid inlet end of the drain pipe 3. The plug block 201 is arranged on the side of the blind end current collector plate 2 facing the gas outlet channel 100, and is arranged in the shape of the liquid inlet end of the drain pipe 3. For example, the cross sections of the plug block 201 and the liquid inlet end of the drain pipe 3 are both circular, which improves the plug-in convenience and plug-in firmness between the drain pipe 3 and the plug block 201. Of course, the cross sections of the plug block 201 and the liquid inlet end of the drain pipe 3 can also be square and other geometric shapes.

[0051] As a preferred embodiment, as shown in Figure 2 and Figure 4 , the communication port 301 extends to the end face of the liquid inlet end of the drain pipe 3, and the outer peripheral wall of the plug block 201 is provided with a protrusion 2011 connected to part of the communication port 301 in a plug-in manner. Here, the communication port 301 extends to the end face of the liquid inlet end, which improves the effect of water flowing into the drain pipe 3. The protrusion 2011 is connected to part of the communication port 301 in a plug-in manner, which further enhances the connection stability of the blind end current collector plate 2 and the liquid inlet end of the drain pipe 3, and makes the plug-in connection of the two more compact, thereby further preventing the drain pipe 3 from loosening or separating during the operation of the fuel cell.

[0052] The communication port 301 extends along the axial direction of the drain pipe 3, and the length of the protrusion 2011 is less than the length of the communication port 301, so as to ensure that the protrusion 2011 is inserted into only part of the communication port 301, thereby facilitating the liquid inlet effect of the communication port 301. As a preferred embodiment, the communication port 301 in the embodiment is a plurality of communication ports arranged at intervals along the circumferential direction of the drain pipe 3, and the protrusion 2011 is arranged in one-to-one correspondence with each communication port 301.

[0053] In the embodiment, when the drain pipe 3 is inserted into the plug 201, the insertion of the protrusion 2011 into the corresponding communication port 301 also guides the drain pipe 3 during the insertion process, thereby further improving the stability of the drain pipe 3 during installation. In addition, the insertion of the protrusion 2011 into the corresponding communication port 301 also facilitates the prevention of rotation of the drain pipe 3 relative to the plug 201, and also facilitates the improvement of the insertion stability of the drain pipe 3 and the reliability during use. When the liquid inlet end of the drain pipe 3 abuts against the blind end collector plate 2, it indicates that the insertion between the drain pipe 3 and the plug 201 is in place.

[0054] As shown in Figure 3 and Figure 4 , the communication port 301 is arranged in two opposite positions, and the protrusion 2011 is also arranged in two opposite positions. Of course, the number of protrusions 2011 and communication ports 301 can also be adaptively increased or decreased according to the use requirements. In addition, even if the number of communication ports 301 is greater than the number of protrusions 2011, the scheme is also feasible as long as the insertion requirements between the drain pipe 3 and the plug 201 are met

[0055] As a preferred connection method, the gas port collector plate 1 in the embodiment is provided with a clamping portion, and the drain pipe 3 is clamped and connected to the gas port collector plate 1 through the clamping portion. Here, the clamping and connection of the drain pipe 3 to the gas port collector plate 1 facilitates the improvement of the installation efficiency of the drain pipe 3. In addition, the clamping portion can provide a certain connection strength, so that the drain pipe 3 will not easily fall off during the operation of the fuel cell.

[0056] As a feasible embodiment, the gas port collector plate 1 is provided with a protrusion 101 protruding into the gas outlet channel 100, and the clamping portion includes a clamping hole 102 provided on the protrusion 101, and the clamping hole 102 is in communication with the gas outlet channel 100. The structure of the protrusion 101 and the clamping hole 102 is simple, and the clamping and cooperation effect of the two is good.

[0057] As a structural example of the clamping hole 102, as shown in Figure 5 and Figure 6As shown, the snap-fit ​​hole 102 includes a snap-fit ​​portion 1021 that snaps into the drain pipe 3, and a connecting portion 1022 that connects the snap-fit ​​portion 1021 to the air outlet channel 100. The width of the connecting portion 1022 gradually decreases along the protruding direction of the protrusion 101. Here, the snap-fit ​​portion 1021 in the first snap-fit ​​hole 102 snaps into the drain pipe 3, and the varying width of the connecting portion 1022 facilitates the drain pipe 3 passing through and being snapped into the snap-fit ​​hole 102, while also preventing the drain pipe 3 from coming out of the snap-fit ​​hole 102.

[0058] Specifically, the snap-fit ​​portion 1021 is arc-shaped, and its diameter is smaller than the outer diameter of the drain pipe 3. This facilitates an interference fit between the snap-fit ​​portion 1021 and the drain pipe 3, thereby achieving the snap-fit ​​connection between the drain pipe 3 and the snap-fit ​​portion 1021. The protrusion direction of the protrusion 101 is as follows: Figure 6 As shown by the arrow, the width of the end of the connecting part 1022 connected to the snap-fit ​​part 1021 is smaller than the diameter of the outer periphery of the drain pipe 3, so as to ensure that the connecting part 1022 can prevent the drain pipe 3 from coming out of the snap-fit ​​hole 102 in the snap-fit ​​state.

[0059] In this embodiment, as the drain pipe 3 passes through the snap-fit ​​portion 1021, it squeezes both sides of the connecting portion 1022, causing both sides to expand outwards. At this time, the width of the connecting portion 1022 increases, thus facilitating the passage of the drain pipe 3. After the drain pipe 3 is installed in place, the two sides of the connecting portion 1022 will move closer to each other. At this time, the width of the connecting portion 1022 will decrease, applying pressure to the drain pipe 3 and increasing the friction between the drain pipe 3 and the snap-fit ​​portion 1021. This improves the stability of the snap-fit ​​of the drain pipe 3 and prevents the drain pipe 3 from accidentally coming off during use.

[0060] As another structural example of the snap-fit ​​hole 102, such as Figure 7 As shown, a limiting protrusion 103 is provided at the connection between the snap-fit ​​hole 102 and the air outlet channel 100. The limiting protrusion 103 is used to prevent the drain pipe 3 from coming out of the snap-fit ​​hole 102. The setting of the limiting protrusion 103 here also helps to improve the snap-fit ​​effect between the drain pipe 3 and the snap-fit ​​hole 102. Even if the fuel cell is subjected to vibration or external force during operation, the limiting protrusion 103 can prevent the drain pipe 3 from accidentally falling off, ensuring the drainage effect of the drain pipe 3. In this embodiment, the limiting protrusion 103 has a simple structure and is easy to process and form.

[0061] In terms of specific structure, the inner peripheral wall of the snap-fit ​​hole 102 is roughly horizontally shaped like a "U", and the limiting protrusion 103 is provided on one side wall of the snap-fit ​​hole 102 facing the air outlet channel 100. Due to the setting of the limiting protrusion 103, the distance between the limiting protrusion 103 and the snap-fit ​​hole 102 is smaller than the width of the snap-fit ​​hole 102, which helps to ensure the anti-detachment effect of the limiting protrusion 103 on the drain pipe 3.

[0062] In a preferred embodiment, the membrane electrode 400 of the fuel cell has a guide portion on its frame 401 located within the outlet channel 100. The guide portion is used to guide the installation of the drain pipe 3 within the outlet channel 100. Here, by providing the guide portion, the installation efficiency of the drain pipe 3 is improved.

[0063] like Figure 8 As shown, the guide portion includes a guide block 4011 disposed on the frame 401 and a guide hole 4012 disposed on the guide block 4011, through which the drain pipe 3 passes. Here, the guide block 4011 and guide hole 4012 have simple structures, are easy to process and form, and have a good guiding effect, thereby improving the assembly efficiency of the fuel cell. The diameter of the guide hole 4012 is larger than the outer diameter of the drain pipe 3, which facilitates the smooth passage of the drain pipe 3 through the guide hole 4012. The drain pipe 3 passes through various components within the fuel cell and is snapped into place by the snap-fit ​​hole 102.

[0064] In this embodiment, guide blocks 4011 and guide holes 4012 can be provided on the frame 401 of each membrane electrode 400, or guide blocks 4011 and guide holes 4012 can be provided only on some of the frame 401, as long as the usage requirements are met. It should be noted that the shape of the guide hole 4012 can be similar to... Figure 6 The shape of the middle card connector 102 is roughly the same, and it can also be arc-shaped. The guide hole 4012 is connected to the air outlet channel 100. Of course, the shape of the guide hole 4012 can also be adjusted according to the usage requirements, and the guide hole 4012 may not be connected to the air outlet channel 100, as long as the guiding usage requirements are met.

[0065] In addition, the drain channel in this embodiment can be specifically set in the gas port end plate to facilitate communication with the drain pipe 3 and discharge the water sucked into the drain pipe 3 into the gas outlet channel 100, preventing water from accumulating in the gas outlet channel 100, thereby ensuring the smooth flow of gas in the gas outlet channel 100 and the normal operation of the fuel cell.

[0066] In this embodiment, during installation, the inlet end of the drain pipe 3 is first inserted and connected to the insert block 201. Then, the second dummy battery, the core 4, the first dummy battery, and the gas port collector plate 1 are stacked sequentially on the blind end collector plate 2. The drain pipe 3 is installed through the guide hole 4012, which facilitates the assembly of the drain pipe 3 and the core 4. Finally, the outlet end of the drain pipe 3 is snapped and connected to the corresponding snap-fit ​​hole 102, thereby completing the installation of the drain pipe 3.

[0067] The drainage structure of the embodiment guides the drainage pipe 3 through the guide hole 4012 on the frame 401, the liquid inlet end of the drainage pipe 3 is inserted and assembled with the plug block 201, and the liquid outlet end of the drainage pipe 3 is connected with the clamping hole 102 on the air outlet manifold 1 in a clamping manner, which is beneficial to improve the connection stability of the drainage pipe 3 in the air outlet channel 100 and is not prone to loosening and falling out in the use process, thereby being beneficial to improve the use performance of the fuel cell. At the same time, the drainage pipe 3 is arranged in the air outlet channel 100, which is beneficial to fully utilize the internal space and structural characteristics of the fuel cell, thereby being beneficial to realize the efficient drainage function.

[0068] Embodiment two

[0069] The embodiment relates to a fuel cell comprising the drainage structure described in embodiment one.

[0070] The fuel cell of the embodiment is beneficial to drain the accumulated water in the air outlet channel 100 through the drainage structure, thereby improving the use performance of the fuel cell.

[0071] The above is only a preferred embodiment of the utility model, and is not used to limit the utility model, and any modification, equivalent replacement, improvement and the like made within the spirit and principle of the utility model should be included in the protection scope of the utility model.

Claims

1. A water drainage structure arranged in a fuel cell, characterized in that: the water drainage structure comprises a water drainage pipe (3) arranged in a gas outlet channel (100) of the fuel cell, the gas outlet channel (100) being used for hydrogen or oxygen to flow out; a liquid inlet end of the water drainage pipe (3) is connected with a blind end current collector plate (2) of the fuel cell, and the liquid inlet end of the water drainage pipe (3) is provided with a communication port (301) in communication with the gas outlet channel (100); a liquid outlet end of the water drainage pipe (3) is connected with a gas port current collector plate (1) of the fuel cell, and the liquid outlet end of the water drainage pipe (3) is in communication with a liquid outlet channel on the fuel cell.

2. The water drainage structure according to claim 1, characterized in that: the liquid inlet end of the water drainage pipe (3) is connected with the blind end current collector plate (2) by insertion.

3. The water drainage structure according to claim 2, characterized in that: the blind end current collector plate (2) is provided with an insertion block (201), and the blind end current collector plate (2) is connected with the liquid inlet end of the water drainage pipe (3) by insertion through the insertion block (201).

4. The water drainage structure according to claim 3, characterized in that: the communication port (301) extends to an end face of the liquid inlet end of the water drainage pipe (3); and a peripheral wall of the insertion block (201) is provided with a protrusion (2011) connected with part of the communication port (301) by insertion.

5. The water drainage structure according to claim 1, characterized in that: the gas outlet channel (100) is two, one of the gas outlet channels (100) is used for hydrogen to flow out, and the other of the gas outlet channels (100) is used for oxygen to flow out, and the water drainage pipe (3) is arranged in at least one of the gas outlet channels (100); and / or the gas port current collector plate (1) is provided with a clamping part, and the water drainage pipe (3) is connected with the gas port current collector plate (1) by clamping through the clamping part.

6. The water drainage structure according to claim 5, characterized in that: the gas port current collector plate (1) is provided with a protruding block (101) protruding into the gas outlet channel (100), and the clamping part comprises a clamping hole (102) arranged on the protruding block (101), and the clamping hole (102) is arranged in communication with the gas outlet channel (100).

7. The water drainage structure according to claim 6, characterized in that: the clamping hole (102) comprises a clamping part (1021) clamped with the water drainage pipe (3), and a communication part (1022) in communication with the clamping part (1021) and the gas outlet channel (100), and the width of the communication part (1022) gradually decreases along the protruding direction of the protruding block (101); or the communication part of the clamping hole (102) and the gas outlet channel (100) is provided with a limiting protrusion (103), and the limiting protrusion (103) is used to block the water drainage pipe (3) from being pulled out of the clamping hole (102).

8. The water drainage structure according to any one of claims 1 to 7, characterized in that: ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ The frame (401) of the membrane electrode (400) of the fuel cell is provided with a guide part located in the gas outlet channel (100), which is used to guide the installation of the drain pipe (3) in the gas outlet channel (100).

9. The drainage structure according to claim 8, characterized in that: The guide part comprises a guide block (4011) provided on the frame (401), and a guide hole (4012) provided on the guide block (4011), and the drain pipe (3) is arranged through the guide hole (4012).

10. A fuel cell, characterized in that: It comprises the drainage structure according to any one of claims 1 to 9.

Images