Fuel cell

Abstract

The utility model discloses a fuel cell, which is characterized in that at least three electric pile stacking structures are sequentially stacked along the height direction of the electric pile stacking structures by arranging at least three electric pile stacking structures, and then a plurality of connecting supports which are distributed along the circumferential direction of each electric pile stacking structure at intervals are formed on the periphery of each electric pile stacking structure; any two adjacent galvanic pile stacking structures are detachably connected through the corresponding connecting supports, and meanwhile, the galvanic pile stacking structures are electrically conducted in sequence through the electric conduction structures, so that when the galvanic pile is used, a mode that at least three galvanic pile stacking structures are stacked is adopted; the function of increasing the power generation power of the fuel cell is realized, and the defect that the high-power requirement of power generation cannot be met by increasing the number of single stacked sheets in the prior art is overcome.

Description

Technical Field

[0001] The utility model relates to the technical field of fuel cells, and particularly relates to a fuel cell. Background Art

[0002] A fuel cell is a chemical device that directly converts the chemical energy of a fuel into electrical energy. It has advantages such as high efficiency and green cleanliness, and is currently the most promising power generation technology.

[0003] With the development of market policies, fuel cell power generation has begun to be widely promoted and applied in the power generation field. Especially in the northern thermoelectric scenarios, the demand for high-power fuel cell power generation is becoming more and more urgent. Developing a high-power stack model is also an inevitable direction in the future. Regarding the current technical development status of the power and assembly process of single cells in the stack, a single stack of the stack cannot meet the high-power demand for power generation by increasing the number of stacked sheets. Summary of the Utility Model

[0004] The main purpose of the utility model is to provide a fuel cell, aiming to solve the technical problem that a high-power fuel cell in the prior art cannot meet the high-power demand for power generation by increasing the number of single stacked sheets.

[0005] To achieve the above purpose, the utility model adopts the following technical solutions:

[0006] In a first aspect, the utility model provides a fuel cell, including:

[0007] At least three stack structures of the stack, at least three of the stack structures of the stack are sequentially stacked along the height direction of the stack structure of the stack. The stack structure of the stack includes an installation frame, a placement space is formed inside the installation frame, the stack is placed in the placement space, a plurality of connecting supports are formed on the outer periphery of the installation frame and are distributed at intervals along its circumferential direction, and any two adjacent stack structures of the stack are detachably connected through the corresponding connecting supports; and,

[0008] An electrical conduction structure, the electrical conduction structure is insulated and connected to each stack structure of the stack. The electrical conduction structure includes a positive electrical conduction component and a negative electrical conduction component. The positive electrical conduction component is electrically conducted with the positive electrodes of all the stack structures of the stack at the same time, and the negative electrical conduction component is electrically conducted with the negative electrodes of all the stack structures of the stack at the same time.

[0009] Optionally, a plurality of the connecting supports on the same side are all arranged in pairs along the height direction of the stack structure of the stack, and the number of the connecting supports on any two adjacent stack structures of the stack is the same and they are arranged in one-to-one correspondence.

[0010] Optionally, mounting surfaces are formed on two opposite sides of each of the stack structures of the fuel cells along their height directions. A plurality of the connecting supports are circumferentially spaced apart along the mounting surfaces on the corresponding sides. Each of the connecting supports is formed with a mounting groove, and the openings of the mounting grooves are all formed in a direction away from the mounting surfaces on the corresponding sides.

[0011] Optionally, the openings of the mounting grooves are all inclined from the side wall of the mounting frame towards a direction away from the mounting frame and towards the mounting surfaces on the corresponding sides.

[0012] Optionally, the positive electrode electrical conduction assembly includes:

[0013] A positive electrode electrical conduction plate, which is insulated and mounted on the outer side wall of the mounting frame and extends along the height direction of the stack structure of the fuel cells; and,

[0014] A plurality of positive electrode electrical connectors, the number of the positive electrode electrical connectors is the same as that of the stack structures of the fuel cells and they are arranged in one-to-one correspondence, and each of them electrically connects the positive electrode of the corresponding stack structure of the fuel cells to the positive electrode electrical conduction plate.

[0015] Optionally, the negative electrode electrical conduction assembly includes:

[0016] A negative electrode electrical conduction plate, which is insulated and mounted on the outer side wall of the mounting frame and extends along the height direction of the stack structure of the fuel cells; and,

[0017] A plurality of negative electrode electrical connectors, the number of the negative electrode electrical connectors is the same as that of the stack structures of the fuel cells and they are arranged in one-to-one correspondence, and each of them electrically connects the negative electrode of the corresponding stack structure of the fuel cells to the negative electrode electrical conduction plate.

[0018] Optionally, the mounting frame includes:

[0019] A frame body;

[0020] A water collecting tray, which is arranged at the bottom of the frame body. The water collecting tray has a water collecting cavity with an open top. The water collecting cavity is communicated with the placement space. A drain port communicated with the water collecting cavity is formed on one side of the water collecting tray. A drain pipe is inserted at the drain port, and the drain pipe penetrates through the bottom of the frame body;

[0021] A plurality of fuel cell mounting brackets, which are distributed on opposite sides of the water collecting tray. The bottom ends of the fuel cell mounting brackets are connected to the frame body;

[0022] An insulating cushion plate, which is erected above the water collecting tray, and a water guiding groove communicated with the water collecting cavity is formed between the insulating cushion plate and the water collecting tray.

[0023] Optionally, a water inlet penetrating through the insulating backing plate is provided on the insulating backing plate. The water inlet is located above the water collecting cavity and communicates with the water collecting cavity, and a water guiding groove is arranged around the outer periphery of the water inlet.

[0024] Optionally, a plurality of reinforcing ribs are arranged on the insulating backing plate at a position close to the water inlet, and the plurality of reinforcing ribs are distributed on opposite sides of the water inlet.

[0025] Optionally, the top end of the fuel cell mounting bracket extends vertically to be close to the top end of the frame body. A plurality of mounting grooves are formed on one side of the fuel cell mounting bracket facing away from the placement space, the openings of the mounting grooves face outward, and mounting holes for mounting the fuel cell are formed on the bottom wall of the mounting groove opposite to the opening.

[0026] One or more of the above technical solutions provided by the present utility model may have the following advantages or at least achieve the following technical effects:

[0027] A fuel cell provided by the present utility model, by providing at least three fuel cell stack structures, enables at least three fuel cell stack structures to be stacked in sequence along the height direction of the fuel cell stack structure. Then, a plurality of connecting supports are formed on the outer periphery of each fuel cell stack structure and are spaced circumferentially. Any two adjacent fuel cell stack structures are detachably connected through corresponding connecting supports. At the same time, each fuel cell stack structure is electrically connected in sequence by using an electrical conduction structure. When the present utility model is in use, the method of stacking at least three fuel cell stack structures is adopted to achieve the function of increasing the power generation of the fuel cell, and the defect that the prior art cannot meet the high-power demand for power generation by increasing the number of single stack sheets is solved. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] In order to more clearly illustrate the technical solutions in the embodiments of the present utility model or the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art. Obviously, the following drawings are only some embodiments of the present utility model. For those of ordinary skill in the art, without creative efforts, other drawings can be obtained based on these provided drawings.

[0029] Figure 1 It is a schematic side structure diagram of the fuel cell of the present utility model;

[0030] Figure 2 It is a schematic structure diagram of the fuel cell of the example of the present utility model;

[0031] Figure 3 For Figure 2 It is a schematic structure diagram of the assembled state of the fuel cell in the example;

[0032] Figure 4 For Figure 2 The structural schematic diagram of the installation frame assembly state exemplified in

[0033] Figure 5 The structural schematic diagram of the stack structure of the stack of the present utility model exemplified

[0034] Figure 6 For Figure 5 The structural schematic diagram of the installation frame exemplified in

[0035] Explanation of the reference numerals in the drawings:

[0036] Label Name Label Name 100 Stack structure of the cell stack 211 Positive electrode electrical conduction plate 200 Electrical conduction structure 212 Positive electrode electrical connector 110 Mounting frame 221 Negative electrode electrical conduction plate 120 Placement space 222 Negative electrode electrical connector 130 Connection support 111 Frame body 210 Positive electrode electrical conduction assembly 112 Water collecting tray 220 Negative electrode electrical conduction assembly 113 Cell stack mounting bracket 131 Mounting groove 114 Insulating backing plate 115 Water inlet 116 Reinforcing rib 117 Mounting slot 118 Mounting hole

[0037] The realization, functional features and advantages of the object of the present utility model will be further described in conjunction with the embodiments with reference to the drawings. Specific embodiments

[0038] To make the object, technical solution and advantages of the present utility model clearer, the technical solutions in the embodiments of the present utility model will be clearly and completely described below with reference to the drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present utility model without creative efforts shall fall within the protection scope of the present utility model.

[0039] It should be noted that in the embodiments of the present utility model, all directional indications (such as up, down, left, right, front, back...) are only used to explain the relative position relationship and movement conditions between components in a specific posture (as shown in the drawings). If the specific posture changes, the directional indications will also change accordingly.

[0040] In the present utility model, the term "comprising", "including" or any other variant thereof is intended to cover non-exclusive inclusion, so that a process, method, article or system including a series of elements not only includes those elements, but also includes other elements not expressly listed, or elements inherent to such process, method, article or system. Without further limitation, the elements defined by the statement "including..." do not exclude the existence of additional identical elements in the process, method, article or system including such element. In addition, the meaning of "and / or" appearing throughout the text includes three parallel solutions. Taking "A and / or B" as an example, it includes solution A, solution B, or a solution that satisfies both A and B at the same time.

[0041] In the present utility model, unless otherwise clearly specified and defined, terms such as "connection" and "fixation" shall be understood in a broad sense. For example, "connection" can be a fixed connection, a detachable connection, or an integral one; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium; it can be the communication inside two elements or the interaction relationship between two elements.

[0042] In the present utility model, if there are descriptions involving "first", "second", etc., such descriptions of "first", "second", etc. are only for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly indicating the quantity of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include at least one such feature.

[0043] In the present utility model, the suffixes used to represent elements such as "module", "component", "part", "member", or "unit" are only for the convenience of the description of the present utility model and have no specific meaning in themselves. Therefore, "module", "member", or "unit" can be used interchangeably.

[0044] For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances. In addition, the technical solutions of each embodiment can be combined with each other. However, it is based on the fact that those of ordinary skill in the art can implement them. When the combination of technical solutions is contradictory or cannot be implemented, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection required by the present utility model.

[0045] The inventive concept of the present utility model will be further elaborated below in conjunction with some specific embodiments.

[0046] The present utility model provides a fuel cell.

[0047] Referring to Figures 1 to 6 , in an embodiment of the present utility model, as Figure 1As shown in the figure, a fuel cell includes at least three stack structures 100 of the fuel cell stack and an electrical conduction structure 200. The at least three stack structures 100 of the fuel cell stack are arranged in a stacked manner in the height direction of the stack structure 100 of the fuel cell stack. The stack structure 100 of the fuel cell stack includes a mounting frame 110, a placement space 120 is formed inside the mounting frame 110, a fuel cell stack is placed in the placement space 120, and a plurality of connecting supports 130 are formed on the outer periphery of the mounting frame 110 and are spaced apart from each other in the circumferential direction thereof. Any two adjacent stack structures 100 of the fuel cell stack are detachably connected through the corresponding connecting supports 130. The electrical conduction structure 200 is insulated from each stack structure 100 of the fuel cell stack. The electrical conduction structure 200 includes a positive electrode electrical conduction component 210 and a negative electrode electrical conduction component 220. The positive electrode electrical conduction component 210 is electrically connected to the positive electrodes of all the stack structures 100 of the fuel cell stack at the same time, and the negative electrode electrical conduction component 220 is electrically connected to the negative electrodes of all the stack structures 100 of the fuel cell stack at the same time.

[0048] It should be specifically and clearly stated that in this embodiment, the exemplary electrical conduction structure 200 can be, but is not limited to, materials that can achieve the function of point transmission in the prior art. In this embodiment, only its application is carried out, and no improvement or design of the materials used is involved. Therefore, it will not be elaborated here. However, it can be clear that the exemplary electrical conduction structure 200 in this embodiment is a copper plate, a copper sheet or a copper wire, etc.

[0049] In this embodiment, by providing at least three stack structures 100 of the fuel cell stack, the at least three stack structures 100 of the fuel cell stack are arranged in a stacked manner in the height direction of the stack structure 100 of the fuel cell stack. Then, a plurality of connecting supports 130 are formed on the outer periphery of each stack structure 100 of the fuel cell stack and are spaced apart from each other in the circumferential direction thereof. Any two adjacent stack structures 100 of the fuel cell stack are detachably connected through the corresponding connecting supports 130. At the same time, the electrical conduction structure 200 is used to electrically connect each stack structure 100 of the fuel cell stack in sequence, so that when the present invention is used, the at least three stack structures 100 of the fuel cell stack are stacked to achieve the function of increasing the power generation of the fuel cell, and solve the defect that the prior art cannot meet the high-power demand for power generation by increasing the number of single stacked sheets.

[0050] In some specific embodiments, a plurality of connecting supports 130 on the same side are arranged in pairs in the height direction of the stack structure 100 of the fuel cell stack, and the number of connecting supports 130 on any two adjacent stack structures 100 of the fuel cell stack is the same and they are arranged in one-to-one correspondence.

[0051] In this embodiment, a plurality of connection supports 130 on the same side are arranged in pairs along the height direction of the stack structure 100 of the fuel cell stack, and the number of connection supports 130 on any two adjacent stack structures 100 of the fuel cell stack is the same and they are arranged in one-to-one correspondence, so that the modular manufacturing of the stack structure 100 of the fuel cell stack can be realized when the present utility model is in use, and the installation of any two stack structures 100 of the fuel cell stack can also be realized, improving the versatility and adaptability of the stack structure 100 of the fuel cell stack.

[0052] In some specific embodiments, mounting surfaces are formed on both opposite sides of each stack structure 100 of the fuel cell stack along its height direction, and a plurality of connection supports 130 are distributed at intervals along the circumferential direction of the mounting surface on the corresponding side. An installation groove 131 is formed on each connection support, and the notch of each installation groove 131 is opened in a direction away from the mounting surface on the corresponding side.

[0053] In this embodiment, by providing the installation groove 131 on each connection support 130, the stack structure 100 of the fuel cell stack can be installed more conveniently when the present utility model is in use, improving the installation efficiency and reducing the mass of the stack structure 100 of the fuel cell stack.

[0054] In some specific embodiments, the notch of each installation groove 131 is inclined from the side wall of the installation frame 110 towards the mounting surface on the corresponding side in a direction away from the installation frame 110.

[0055] In this embodiment, the notch of the installation groove 131 is set to be inclined from the side wall of the installation frame 110 towards the mounting surface on the corresponding side in a direction away from the installation frame 110, making the appearance of the fuel cell manufactured by the present utility model more beautiful and the structure more compact.

[0056] It should be specifically and clearly stated that the positive electrode electrical conduction assembly 210 includes a positive electrode electrical conduction plate 211 and a plurality of positive electrode electrical connection members 212. The positive electrode electrical conduction plate 211 is insulated and installed on the outer side wall of the installation frame 110 and extends along the height direction of the stack structure 100 of the fuel cell stack. The number of the plurality of positive electrode electrical connection members 212 is the same as that of the stack structure 100 of the fuel cell stack and they are arranged in one-to-one correspondence, and each of them electrically connects the positive electrode of the corresponding stack structure 100 of the fuel cell stack to the positive electrode electrical conduction plate 211.

[0057] The negative electrode electrical conduction assembly 220 includes a negative electrode electrical conduction plate 221 and a plurality of negative electrode electrical connection members 222. The negative electrode electrical conduction plate 221 is insulated and installed on the outer side wall of the installation frame 110 and extends along the height direction of the stack structure 100 of the fuel cell stack. The number of the plurality of negative electrode electrical connection members 222 is the same as that of the stack structure 100 of the fuel cell stack and they are arranged in one-to-one correspondence, and each of them electrically connects the negative electrode of the corresponding stack structure 100 of the fuel cell stack to the negative electrode electrical conduction plate 221.

[0058] This enables the present utility model to connect more stack structures 100 of fuel cells during use, effectively increasing the power of the fuel cell.

[0059] In some preferred embodiments, the mounting frame 110 includes a frame body 111, a water collecting tray 112, an insulating backing plate 114, and a plurality of fuel cell mounting brackets 113. The water collecting tray 112 is disposed at the bottom of the frame body 111. The water collecting tray 112 has a water collecting cavity with an open top, and the water collecting cavity communicates with the placement space 120. A drain port communicating with the water collecting cavity is formed on one side of the water collecting tray 112. A drain pipe is inserted at the drain port, and the drain pipe passes through the bottom of the frame body 111. The plurality of fuel cell mounting brackets 113 are distributed on opposite sides of the water collecting tray 112. The bottom end of each fuel cell mounting bracket 113 is connected to the frame body 111. The insulating backing plate 114 is erected above the water collecting tray 112, and a water guiding groove communicating with the water collecting cavity is formed between the insulating backing plate 114 and the water collecting tray 112.

[0060] It should be noted that the frame body 111 can be welded by square tubes in the prior art. The frame body 111 has a rectangular frame structure and is used to accommodate a single fuel cell in a multi-fuel cell system. The multi-fuel cell system includes a plurality of frame bodies 111, and only one single fuel cell in the multi-fuel cell system is provided in each frame body 111.

[0061] It should be understood that: the single fuel cell is mounted on the frame body 111 through the fuel cell mounting bracket 113, and the water collecting tray 112 is welded to the bottom of the frame body 111. Each single fuel cell is insulated from the frame body 111 or the water collecting tray 112 through an insulating partition, the water collecting tray 112, and the frame body 111, so as to avoid direct contact between the single fuel cell and the frame body 111 or the water collecting tray 112 to ensure the insulation performance of the fuel cell. When a certain single fuel cell is damaged and leaks liquid, the leaked liquid generated by the single fuel cell flows from the open top of the water collecting tray 112 into the water collecting cavity of the water collecting tray 112 through the water guiding groove formed between the insulating backing plate 114 and the water collecting tray 112 under the action of gravity, so as to collect the leaked liquid of the single fuel cell. When repairing the damaged single fuel cell, the leaked liquid in the water collecting tray 112 is discharged from the water collecting tray 112 through the drain pipe communicating with the water collecting cavity, and then the leaked liquid of the single fuel cell is processed to prevent the leaked liquid generated by the damaged single fuel cell from damaging other fuel cells or other components of the system.

[0062] Certainly, in an exemplary embodiment, a water inlet 115 penetrating through the insulating backing plate 114 is provided on the insulating backing plate 114. The water inlet 115 is located above the water collecting cavity and communicates with the water collecting cavity. The water guiding groove surrounds the outer periphery of the water inlet 115.

[0063] It should be noted that the insulating backing plate 114 can be made of non-metal and is used to carry a single fuel cell stack to ensure the insulation performance of the fuel cell stack. A foam is pasted on it to eliminate the installation and processing errors between the fuel cell stack mounting bracket 113 and the insulating backing plate 114, so that the single fuel cell stack is in a horizontal state.

[0064] It should be understood that in order to improve the water collection efficiency of the water collection tray 112, a water inlet 115 is provided at the center of the orthographic projection of the insulating backing plate 114 on the water collection tray 112. When a single fuel cell stack in the multi-fuel cell stack system is damaged and leaks liquid, the leaked liquid passes through the water guiding groove formed between the insulating backing plate 114 and the water collection tray 112 and the water inlet 115 on the insulating backing plate 114, and flows into the water collection cavity from the open end at the top of the water collection tray 112, so as to collect the leaked liquid of the single fuel cell stack, prevent the leaked liquid from damaging other fuel cell stacks or other components of the system, quickly guide the leaked liquid to the water collection cavity of the water collection tray 112, and prevent the damaged single fuel cell stack from being soaked in the leaked liquid for a long time, thus avoiding potential safety hazards.

[0065] Optionally, a plurality of reinforcing ribs 116 are provided at a position on the insulating backing plate 114 close to the water inlet 115, and the plurality of reinforcing ribs 116 are distributed on opposite sides of the water inlet.

[0066] It should be noted that the reinforcing ribs 116 can be made of non-metal to ensure the insulation performance of the single fuel cell stack.

[0067] It should be understood that in order to improve the structural strength of the insulating backing plate 114 itself to support the single fuel cell stack thereon, the reinforcing ribs 116 are also provided on the insulating backing plate 114 at positions matching the water inlet 115.

[0068] Optionally, the fuel cell stack mounting bracket 113 extends vertically to the top close to the top of the frame body. A plurality of vertically spaced mounting grooves 117 are formed on the side of the fuel cell stack mounting bracket 113 facing away from the placement space. The openings of the mounting grooves 117 face outward, and mounting holes 118 for mounting a fuel cell are formed on the bottom wall of the mounting grooves 117 opposite to the openings.

[0069] It should be noted that since the fuel cell stack is formed by stacking dozens or even hundreds of bipolar plates, there will be a large length tolerance of the fuel cell stack. By adjusting the connection distance between the fuel cell stack mounting bracket 113 and the bottom frame, and mounting the single fuel cell stack using the mounting grooves 117, the position between the fuel cell stack mounting bracket 113 and the single fuel cell stack can be adjusted, which is convenient for the adjustment and installation of the single fuel cell stack, improves the disassembly and assembly efficiency of the single fuel cell stack, and ensures the installation effect of the single fuel cell stack.

[0070] Finally, it should also be noted that the serial numbers of the above embodiments of the present utility model are only for description and do not represent the advantages or disadvantages of the embodiments. The above embodiments are only optional embodiments of the present utility model, and do not limit the patent scope of the present utility model accordingly. Any equivalent structural or equivalent process transformation made by using the content of the specification and drawings of the present utility model under the inventive concept of the present utility model, or directly or indirectly applied to other related technical fields, are all included in the patent protection scope of the present utility model.

Claims

1. A fuel cell, characterized in that: include: At least three battery stack structures, at least three of the battery stack structures are stacked in sequence along the height direction of the battery stack structure, the battery stack structure comprises a mounting frame, a placement space is formed in the mounting frame, the battery stack is placed in the placement space, a plurality of connection supports are formed on the periphery of the mounting frame and are distributed at intervals along the circumference thereof, and any two adjacent battery stack structures are detachably connected via the corresponding connection supports; and, An electrical conduction structure, wherein the electrical conduction structure is insulated and connected to each of the battery stack structures, and the electrical conduction structure includes a positive electrode electrical conduction component and a negative electrode electrical conduction component, wherein the positive electrode electrical conduction component is simultaneously electrically conductive with the positive electrodes of all the battery stack structures, and the negative electrode electrical conduction component is simultaneously electrically conductive with the negative electrodes of all the battery stack structures.

2. The fuel cell according to claim 1, wherein: The plurality of connection supports on the same side are arranged opposite to each other in pairs along the height direction of the battery stack structure, and the number of the connection supports on any two adjacent battery stack structures is consistent and arranged in one-to-one correspondence.

3. The fuel cell according to claim 2, wherein: Each of the battery stack structures has two oppositely arranged side surfaces along its height direction forming a mounting surface, and a plurality of connecting supports are distributed at circumferential intervals along the mounting surface on the corresponding side. A mounting groove is formed on each of the connecting supports, and the notch of each of the mounting grooves is opened in a direction away from the mounting surface on the corresponding side.

4. The fuel cell according to claim 3, wherein: The notches of the mounting grooves are arranged to be inclined from the side wall of the mounting frame toward the mounting surface of the corresponding side in a direction away from the mounting frame.

5. The fuel cell according to any one of claims 1 to 4, characterized in that The positive electrode electrical conduction component comprises: A positive electrode conduction plate, the positive electrode conduction plate is insulated and mounted on the outer side wall of the mounting frame and extends along the height direction of the battery stack structure; and A plurality of positive electrode electrical connectors are provided, the number of the plurality of positive electrode electrical connectors is consistent with that of the battery stack structure and they are arranged in one-to-one correspondence, and all of the positive electrode electrical connectors electrically connect the corresponding positive electrode of the battery stack structure with the positive electrode electrical conduction plate.

6. The fuel cell according to any one of claims 1 to 4, characterized in that The negative electrode electrical conduction component comprises: A negative electrode conductive plate, the negative electrode conductive plate is insulated and mounted on the outer side wall of the mounting frame and extends along the height direction of the battery stack structure; and A plurality of negative electrode electrical connectors are provided, the number of the plurality of negative electrode electrical connectors is consistent with that of the battery stack structure and they are arranged in one-to-one correspondence, and all of the negative electrode electrical connectors electrically connect the corresponding negative electrode of the battery stack structure with the negative electrode electrical conduction plate.

7. The fuel cell according to any one of claims 1 to 4, characterized in that The mounting frame comprises: Framework body; A water collecting tray, the water collecting tray is arranged at the bottom of the frame body, the water collecting tray has a water collecting cavity with an open top, the water collecting cavity is communicated with the placement space, a drainage port communicated with the water collecting cavity is formed on one side of the water collecting tray, a drainage pipe is plugged at the drainage port, and the drainage pipe is passed through the bottom of the frame body; A plurality of battery stack mounting brackets, wherein the plurality of battery stack mounting brackets are distributed on opposite sides of the water collecting tray, and the bottom end of each battery stack mounting bracket is connected to the frame body; An insulating pad is mounted above the water collecting tray, and a water diversion trough connected to the water collecting cavity is formed between the insulating pad and the water collecting tray.

8. The fuel cell according to claim 7, wherein: The insulating pad is provided with a water inlet which passes through the insulating pad. The water inlet is located above the water collecting cavity and communicates with the water collecting cavity. The water diversion trough is arranged around the outer periphery of the water inlet.

9. The fuel cell according to claim 8, characterized in that A plurality of reinforcing ribs are arranged on the insulating pad near the water inlet, and the plurality of reinforcing ribs are distributed on two opposite sides of the water inlet.

10. The fuel cell according to claim 8, wherein: The stack mounting bracket extends vertically to its top end close to the top end of the frame body, and a plurality of vertically spaced mounting grooves are formed on the side of the stack mounting bracket away from the placement space, the groove openings of the mounting grooves face outward, and the bottom wall of the mounting grooves opposite to the groove openings is formed with mounting holes for mounting the fuel cell.

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