Stack housing and fuel cell

Abstract

The application discloses a stack shell and a fuel cell, and relates to the technical field of batteries, wherein the stack shell comprises a plurality of circumferentially distributed side plates and end covers; the plurality of side plates enclose an installation cavity; the installation cavity is provided with a port; and the end cover covers the port and is detachably connected with the side plates. According to the technical scheme, the detachable connection between the side plates and the end cover facilitates the disassembly of the stack shell in the later period, solves the problem of difficult disassembly of the stack shell caused by the traditional welding mode, and is thus beneficial to the maintenance of the fuel cell in the later period.

Description

Technical Field

[0001] This application relates to the field of battery technology, and in particular to a fuel cell stack housing and a fuel cell. Background Technology

[0002] The fuel cell stack is the site of electrochemical reactions and the core component of a hydrogen fuel cell. It contains stacked battery cells, which, to ensure cell stability, must be confined within the stack casing. In related technologies, the stack casing is typically fixed using welding, which is detrimental to fuel cell maintenance. Utility Model Content

[0003] The main purpose of this application is to propose a fuel cell stack housing and a fuel cell, which aims to solve the problem of difficult maintenance and upkeep of fuel cells in the later stages.

[0004] To achieve the above objectives, the fuel cell stack housing proposed in this application includes a plurality of side plates and end caps distributed circumferentially. The plurality of side plates enclose a mounting cavity, the mounting cavity having a port, the end cap sealing the port, the end cap having a sliding groove, the peripheral side of the end cap having a plurality of insertion holes, at least one end of the sliding groove extending in the direction of extension communicating with the insertion holes, and the side plates having sliding portions that are slidably connected to the sliding groove.

[0005] The fuel cell housing also includes a limiting structure, which includes an elastic element and a limiting part. The elastic element is disposed between the sliding part and the groove wall of the sliding groove, and the limiting part is connected to the elastic element and abuts against the edge of the insertion hole, so that the end cap can be restricted to the position of sealing the port.

[0006] In one embodiment, one end of the elastic member is connected to the limiting part, and the other end is connected to the sliding part.

[0007] In one embodiment, the limiting portion has a spherical surface that abuts against the edge of the insertion hole.

[0008] In one embodiment, the corner of the end cap is provided with a bevel, and the bevel is provided with the insertion hole of two adjacent sliding grooves.

[0009] In one embodiment, the chute has a first chute segment and a second chute segment distributed sequentially in the direction from the chute opening to the chute bottom. The width of the first chute segment is smaller than that of the second chute segment. The sliding part is adaptedly disposed in the second chute segment, and the limiting part is inserted into the second chute segment through the first chute segment.

[0010] In one embodiment, the fuel cell stack housing further includes an inner liner plate disposed in the mounting cavity and abutting against the end cap.

[0011] In one embodiment, the inner liner plate is provided with a first through hole communicating with the mounting cavity, and the end cap is provided with a second through hole communicating with the first through hole.

[0012] In one embodiment, a buffer is provided between the inner liner and the end cap, and at least one of the inner liner and the end cap has a mounting groove on one side facing each other, and the buffer is installed in the mounting groove.

[0013] This application also proposes a fuel cell including the aforementioned stack housing.

[0014] The technical solution of this application adopts a detachable connection between the side plate and the end cover, which allows for easy disassembly of the stack housing in the later stage. This solves the problem of difficult disassembly of the stack housing caused by traditional welding methods, and thus facilitates the later maintenance of fuel cells. Attached Figure Description

[0015] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on the structures shown in these drawings without creative effort.

[0016] Figure 1 This is a schematic diagram of the structure of an embodiment of the fuel cell stack housing provided in this application;

[0017] Figure 2 for Figure 1 Exploded view of the fuel cell stack casing;

[0018] Figure 3 for Figure 2 A magnified view of a section at point A in the middle;

[0019] Figure 4 for Figure 2 A magnified view of a section at point B in the middle;

[0020] Figure 5 for Figure 2 Exploded view of the middle end cap, inner liner, and buffer components;

[0021] Figure 6 for Figure 2 Exploded view of the middle end cap, inner liner, and buffer components from another perspective;

[0022] Figure 7 This is a schematic diagram showing the fit between the sliding part and the groove;

[0023] Figure 8 This is a schematic diagram showing the fit between the limiting structure and the socket.

[0024] Explanation of icon numbers:

[0025] 100, Side plate; 200, End cap; 300, Limiting structure; 400, Inner liner; 500, Buffer; 600, Mounting groove; 110, Mounting cavity; 120, Port; 130, Sliding part; 210, Slide groove; 211, First groove segment; 212, Second groove segment; 220, Insertion hole; 230, Inclined surface; 240, Second through hole; 310, Elastic element; 320, Limiting part; 410, First through hole.

[0026] The realization of the purpose, functional features and advantages of this application will be further explained in conjunction with the embodiments and with reference to the accompanying drawings. Detailed Implementation

[0027] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this application, and not all of the embodiments. Based on the embodiments of this application, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of this application.

[0028] It should be noted that if the embodiments of this application involve directional indicators (such as up, down, left, right, front, back, etc.), the directional indicators are only used to explain the relative positional relationship and movement of the components in a specific posture. If the specific posture changes, the directional indicators will also change accordingly.

[0029] Furthermore, if the embodiments of this application involve descriptions such as "first" or "second," these descriptions are for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined with "first" or "second" may explicitly or implicitly include at least one of those features. Additionally, the use of "and / or" or "and / or" throughout the text includes three parallel solutions. For example, "A and / or B" includes solution A, solution B, or a solution that simultaneously satisfies A and B. Furthermore, the technical solutions of the various embodiments can be combined with each other, but this must be based on the ability of those skilled in the art to implement them. When the combination of technical solutions is contradictory or impossible to implement, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection claimed in this application.

[0030] This application proposes a fuel cell stack housing.

[0031] Please see Figures 1 to 4In one embodiment of this application, the fuel cell stack housing includes a plurality of circumferentially distributed side plates 100 and end caps 200. The plurality of side plates 100 surround to form a mounting cavity 110. The mounting cavity 110 has a port 120. The end cap 200 covers the port 120 and is detachably connected to the side plates 100.

[0032] Specifically, multiple side plates 100 enclose a mounting cavity 110 for accommodating the battery cells. The side plates 100 provide a robust protective shell for the battery cells inside the mounting cavity 110, helping to resist the influence of the external environment and thus improving the operational stability and lifespan of the fuel cell. The mounting cavity 110 has a port 120, and an end cap 200 is used to cover the port 120 of the mounting cavity 110 and is detachably connected to the side plates 100. The end cap 200 and the side plates 100 can be connected by bolts and nuts, by sliding connection, or by snap-fit ​​connection. The detachable connection between the end cap 200 and the side plates 100 allows for easy opening of the end cap 200 when maintenance, repair, or upgrades of the fuel cell are required, thus solving the problem of difficult post-maintenance of the fuel cell and greatly improving maintenance efficiency.

[0033] The technical solution of this application adopts a detachable connection between the end cover 200 and the side plate 100, which allows for easy disassembly of the fuel cell stack shell in the later stage, thereby solving the problem of difficult disassembly of the fuel cell stack shell caused by the traditional welding method, which is beneficial to the later maintenance of fuel cells.

[0034] In one implementation, please refer to Figures 1 to 4 One of the side plate 100 and the end cap 200 is provided with a groove 210, and the other is provided with a sliding part 130 that is slidably connected to the groove 210. The sliding part 130 is also limited and cooperated with the groove wall of the groove 210 by a limiting structure 300, so that the end cap 200 can be restricted to the position of the sealing port 120.

[0035] Port 120 and end cover 200 are connected by a sliding fit, allowing end cover 200 to be installed on port 120, thereby connecting end cover 200 to side plate 100. One of the side plate 100 and end cover 200 is provided with a groove 210, and the other with a corresponding sliding part 130. The sliding part 130 can slide along the groove 210, achieving a convenient connection between end cover 200 and side plate 100. This not only simplifies the assembly process of end cover 200 and side plate 100 but also facilitates the disassembly or maintenance of the fuel cell stack housing. Furthermore, a limiting structure 300 is provided to limit the position of the sliding part 130, fixing the position of end cover 200 and ensuring that end cover 200 will not shift due to external vibration or other factors, preventing accidental sliding or detachment, and ensuring the stability and reliability of the connection between end cover 200 and side plate 100. In this way, the end cap 200 can firmly seal the port 120 of the mounting cavity 110, ensuring the reliability and safety of the battery cell installation inside the mounting cavity 110.

[0036] The end cap 200 and the side plate 100 are slidably engaged via a groove 210 and a sliding part 130, allowing for quick and easy installation and removal of the end cap 200 without the need for welding or additional fastening tools such as bolts and nuts. This not only facilitates the disassembly of the fuel cell stack housing and improves subsequent fuel cell maintenance but also enhances fuel cell assembly efficiency. Furthermore, the limiting structure 300 effectively prevents displacement of the end cap 200 during use, improving the stability and reliability of the connection between the end cap 200 and the side plate 100, thereby enhancing the overall safety and reliability of the fuel cell.

[0037] The side plate 100 can be connected to the end cap 200 at one of the ports 120 by a sliding fit, and to the end cap 200 at the other port 120 by another method; alternatively, the side plate 100 can be connected to the end caps 200 at both ports 120 by a sliding fit. Understandably, after stacking multiple battery cells, the battery cells are pressed together by the end caps 200 at both ends, and then the multiple side plates 100 are slidably fitted to the end caps 200 in sequence, so that the sliding part 130 is inserted into the groove 210 and limited by the limiting structure 300 to the groove wall of the groove 210, thus completing the assembly of the fuel cell.

[0038] The technical solution of this embodiment uses a sliding groove 210 on one of the side plate 100 and the end cap 200, and a sliding part 130 that is slidably connected to the sliding groove 210 on the other, so that the side plate 100 and the end cap 200 can be slidably connected, thereby improving the assembly efficiency of the fuel cell. At the same time, a limiting structure 300 is used to restrict the end cap 200 to the position of the sealing port 120, so as to ensure a stable and reliable connection between the side plate 100 and the end cap 200.

[0039] In one implementation, please refer to Figures 2 to 4 The sliding part 130 is provided on the side plate 100, and the sliding groove 210 is correspondingly provided on the end cover 200.

[0040] The sliding part 130 is provided on the side plate 100, so that the side plate 100 can cooperate with the sliding groove 210 on the end cover 200 through the sliding part 130. Compared with providing the sliding groove 210 on the side plate 100, it is easier to process the sliding groove 210 on the end plate, and the thickness of the side plate 100 can be relatively reduced, thereby achieving the weight reduction of the fuel cell stack housing and reducing production costs.

[0041] In other embodiments, the side plate 100 may be provided with a groove 210 and the sliding part 130 may be provided on the end cover 200; or one end of the side plate 100 may be provided with a sliding part 130 and the opposite end may be provided with a groove 210, one end cover 200 may be provided with a groove 210 and the other end cover 200 may be provided with a sliding part 130.

[0042] In one implementation, please refer to Figure 3 and Figure 8 The limiting structure 300 includes an elastic member 310 disposed between the sliding part 130 and the groove wall of the groove 210.

[0043] An elastic element 310 is disposed between the sliding portion 130 and the groove wall of the sliding groove 210, providing necessary elasticity and friction between them. The elastic element 310 can be a spring, rubber block, bellows, etc., to allow elastic deformation of the elastic element 310 during the assembly of the side plate 100 and the end cap 200. When the end cap 200 slides into place, the elastic element 310 can remain at its original length or deform. When the elastic element 310 is at its original length, the position of the sliding portion 130 within the sliding groove will not change without external force. When the elastic element 310 deforms, it applies a counterforce to the sliding portion 130, helping to lock its position and prevent it from sliding or falling off. The elastic element 310 effectively absorbs vibration and impact, reducing the risk of accidental movement of the sliding portion 130 due to external factors, thereby enhancing the stability of the connection between the side plate 100 and the end cap 200.

[0044] In one implementation, please refer to Figure 3 , Figure 6 and Figure 8 The end cap 200 has a plurality of insertion holes 220 on its peripheral side. At least one end of the sliding groove 210 in the extension direction is connected to the insertion hole 220. The limiting structure 300 also includes a limiting part 320, which is connected to the elastic member 310 and abuts against the edge of the insertion hole 220.

[0045] Multiple insertion holes 220 are provided on the peripheral side of the end cap 200. The insertion holes 220 not only allow the sliding part 130 to insert into the slide groove 210, but also provide contact points for the limiting part 320, serving as its limiting position. The slide groove 210 may have only one end connected to an insertion hole 220 along its length, through which the sliding part 130 can be inserted; alternatively, the slide groove 210 may have both ends connected to different insertion holes 220, allowing the sliding part 130 to be inserted into either one. When the sliding part 130 slides into position along the slide groove 210, the limiting part 320 abuts against the edge of the insertion hole 220, achieving a secure locking effect. The cooperation between the limiting part 320 and the insertion hole 220 greatly improves the stability of the end cap 200, preventing loosening due to vibration or other external forces. The locking function is achieved by using the elastic force of the elastic element 310 to push the limiting part 320 into the socket 220; when it is necessary to unlock, the limiting part 320 can be disengaged from the socket 220 by applying appropriate force to overcome the resistance of the elastic element 310. Thus, the limiting part 320 can automatically lock or unlock in the correct position, reducing the need for manual adjustment and simplifying the operation. The continuous elastic force provided by the elastic element 310 ensures that the limiting part 320 is always confined in the socket 220, and it is not easy to loosen even under external vibration or impact, increasing the safety and reliability of use.

[0046] In other embodiments, the limiting part 320 may be omitted, and one end of the elastic member 310 may abut against the sliding part 130, while the other end abuts against the groove wall of the sliding groove 210.

[0047] In one implementation, please refer to Figure 3 and Figure 8 One end of the elastic element 310 is connected to the limiting part 320, and the other end is connected to the sliding part 130.

[0048] One end of the elastic element 310 is connected to the limiting part 320, and the other end is connected to the sliding part 130. When the sliding part 130 moves along the slide groove 210 to a predetermined position, the elastic element 310 is compressed so that the limiting part 320 is engaged in the slide groove 210 from the opening of the slide groove 210. The elastic element 310 pushes the limiting part 320 against the edge of the insertion hole 220 on the peripheral side of the end cover 200 through its own elastic force, thereby achieving a locking function. This not only improves the speed of installation and removal of the side plate 100 and the end cover 200, but also ensures the stability of the connection between the side plate 100 and the end cover 200. The elastic element 310 directly connects the sliding part 130 and the limiting part 320, making the entire limiting structure 300 more compact. The limiting part 320 can automatically lock by simply aligning the end cover 200 with the slide groove 210 and sliding it to the predetermined position, thereby simplifying the assembly steps.

[0049] In other embodiments, the limiting structure 300 can also be separately provided from the sliding part 130. For example, the first end of the groove 210 communicates with the insertion hole 220, and the second end has a closed groove wall. When the sliding part 130 slides into place from the insertion hole 220, the compressed elastic member 310 and the limiting part 320 are inserted into the groove 210 together. The elastic force of the elastic member 310 pushes the limiting part 320 to engage with the insertion hole 220. In another embodiment, the elastic member 310 and the limiting part 320 can also be separately provided. The elastic member 310 abuts against the groove wall at the second end. The sliding part 130 slides in the groove 210 and compresses the elastic member 310 so that a mounting position is formed between the other end of the sliding part 130 and the insertion hole 220 for the limiting part 320 to be placed there. The elastic force of the elastic member 310 pushes the sliding part 130 so that the limiting part 320 at the other end engages with the insertion hole 220.

[0050] In one implementation, please refer to Figure 3 , Figure 4 and Figure 8 The limiting part 320 has a spherical surface that abuts against the edge of the socket 220.

[0051] The limiting part 320 adopts a spherical design, which provides uniform pressure distribution when it contacts the edge of the socket 220. The spherical design allows the limiting part 320 to maintain contact with the edge of the socket 220 in multiple directions, increasing the contact area and thus improving the stability of the fixation. Furthermore, the spherical design can reduce wear to some extent and extend the service life of the component. At least a portion of the socket 220 is a circular hole to match the spherical shape of the limiting part 320. The circular hole allows the spherical surface of the limiting part 320 to more easily enter or exit the socket 220 and ensures a tight fit between the two. This not only simplifies the installation and disassembly process but also ensures that the limiting part 320 is firmly positioned within the socket 220, preventing accidental loosening.

[0052] The limiting part 320 can be spherical or hemispherical, provided it has a spherical surface that engages with the insertion hole 220. The part of the insertion hole 220 that engages with the limiting part 320 can be circular or any other shape that allows the sliding part 130 to pass through and is compatible with the limiting part 320. It is worth noting that in the hemispherical embodiment, the limiting part 320 not only satisfies the limiting engagement with the insertion hole 220 but also allows for adjustment of the installation angle during insertion into the sliding groove 210, making it easier to insert into the sliding groove 210, thereby reducing assembly difficulty and improving assembly efficiency.

[0053] Please see Figure 4The insertion hole 220 also includes a square hole through which the side plate 100 passes; that is, the insertion hole 220 includes a circular hole and a square hole that are connected. Understandably, during assembly, the sliding part 130 passes through the circular hole into the second groove section 212, and the portion of the side plate 100 connecting to the sliding part 130 passes through the square hole into the first groove section 211. In other embodiments, the insertion hole 220 may also be entirely circular, with both the sliding part 130 and the side plate 100 passing through the circular insertion hole 220 into the groove 210.

[0054] In one implementation, please refer to Figures 4 to 6 The corner of the end cap 200 is provided with a bevel 230, and the bevel 230 is provided with an insertion hole 220 of two adjacent sliding grooves 210.

[0055] By setting the corners of the end cap 200 to be chamfered, the corners of the end cap 200 form a clearance space outside the inclined surface 230, so as to prevent the two adjacent sliding parts 130 from interfering when inserted into the sliding groove 210.

[0056] In one implementation, please refer to Figure 3 , Figure 4 and Figure 7 The slide 210 has a first groove segment 211 and a second groove segment 212 that are sequentially distributed in the direction from the groove opening to the groove bottom. The width of the first groove segment 211 is smaller than that of the second groove segment 212. The sliding part 130 is adaptedly disposed in the second groove segment 212, and the limiting part 230 is inserted into the second groove segment 212 through the first groove segment 211.

[0057] The first groove segment 211 is narrower and serves as a limit to prevent the sliding part 130 from dislodging from the opening of the slide groove 210. The second groove segment 212 is wider than the first groove segment 211. The second groove segment 212 is designed to accommodate and allow the sliding part 130 to slide smoothly within it. Its greater width provides sufficient space to accommodate the size of the sliding part 130 and also provides room for the elastic element 310 to move. The fitting of the sliding part 130 to the second groove segment 212 means that the design of the shape and size of the sliding part 130 ensures that it can move freely within the second groove segment 212, but cannot exit the slide groove 210 through the narrower first groove segment 211. This not only ensures smoothness during sliding but also guarantees the stability of the connection between the side plate 100 and the end cap 200. After the sliding part 130 is inserted into the second groove 212 from the insertion hole 220, the limiting part 230 can be easily inserted into the second groove 212 from the first groove 211 by stretching or compressing the length of the elastic member 310. Under the action of the elastic member 310, the limiting part 230 will automatically abut against the edge of the insertion hole 220, thereby limiting the sliding part 130 in the extension direction of the groove 210 to prevent the sliding part 130 from coming out of the insertion hole 220.

[0058] In one implementation, please refer to Figure 2The fuel cell stack housing also includes an inner liner plate 400, which is disposed in the mounting cavity 110 and abuts against the end cover 200.

[0059] The inner liner plate 400 is located inside the mounting cavity 110 to press the battery unit, help fix the position of the battery unit, and prevent the battery unit from shaking inside the mounting cavity 110; at the same time, it can also enhance the overall rigidity and pressure resistance of the stack housing and prevent external pressure from damaging the internal battery unit.

[0060] In one implementation, please refer to Figure 5 and Figure 6 The inner lining plate 400 is provided with a first through hole 410 communicating with the mounting cavity 110, and the end cap 200 is provided with a second through hole 240 communicating with the first through hole 410.

[0061] The second through hole 240 is connected to the first through hole 410, together forming a complete ventilation path to discharge hydrogen or oxygen from the mounting cavity 110. This helps to regulate the internal pressure of the fuel cell and dissipate heat from the fuel cell, preventing internal pressure buildup due to temperature changes or other factors, thereby avoiding potential damage to the battery cell.

[0062] In one embodiment, multiple first through holes 410 are provided, and the multiple first through holes 410 communicate with a second through hole 240, thereby reducing the material used in the end cap 200, achieving weight reduction of the end cap 200 and reducing the production cost of the end cap 200. In another embodiment, multiple first through holes 410 and multiple second through holes 240 are provided, and they are arranged in a one-to-one correspondence.

[0063] In one implementation, please refer to Figure 5 and Figure 6 A buffer 500 is provided between the inner liner 400 and the end cap 200. At least one of the inner liner 400 and the end cap 200 has a mounting groove 600 on one side facing each other, and the buffer 500 is installed in the mounting groove 600.

[0064] The buffer 500 is mainly used to absorb and disperse external impact forces, effectively isolating external vibrations and impacts, preventing damage caused by direct collision between the inner liner 400 and the end cap 200 due to vibrations during transportation, and reducing direct impact on the internal battery cells. The buffer 500 can be made of materials such as rubber, polyurethane foam, or foamed polyethylene, or engineering plastics such as polycarbonate or polyoxymethylene, which are designed with corrugated or honeycomb shapes to increase the material's flexibility and energy absorption capacity. The inner liner 400 may have a mounting groove 600 on one side facing the end cap 200; or the end cap 200 may have a mounting groove 600 on one side facing the inner liner 400; or both the inner liner 400 and the end cap 200 may have mounting grooves 600 on their respective sides, with part of the buffer 500 installed in the mounting groove 600 of the inner liner 400 and another part installed in the mounting groove 600 of the end cap 200. Mounting slot 600 provides a precise mounting position for buffer component 500, ensuring it does not shift during use and maintaining a stable shock absorption effect over the long term. Assembly personnel can more easily place buffer component 500 correctly in place, reducing the possibility of incorrect assembly and improving production efficiency.

[0065] This application also proposes a fuel cell, which includes a stack housing. The specific structure of the stack housing is as described in the above embodiments. Since this fuel cell adopts all the technical solutions of all the above embodiments, it has at least all the beneficial effects brought about by the technical solutions of the above embodiments, which will not be repeated here.

[0066] The above description is merely an exemplary embodiment of this application and does not limit the patent scope of this application. Any equivalent structural transformations made based on the technical concept of this application and the contents of the specification and drawings of this application, or direct / indirect applications in other related technical fields, are included within the patent protection scope of this application.

Claims

1. A fuel cell stack casing, characterized in that, The device includes multiple side plates (100) distributed circumferentially and an end cap (200). The multiple side plates (100) enclose a mounting cavity (110). The mounting cavity (110) has a port (120). The end cap (200) covers the port (120). The end cap (200) is provided with a sliding groove (210). The peripheral side of the end cap (200) is provided with multiple insertion holes (220). At least one end of the sliding groove (210) in the extending direction communicates with the insertion hole (220). The side plate (100) is provided with a sliding part (130) that is slidably connected to the sliding groove (210). The fuel cell housing also includes a limiting structure (300), which includes an elastic element (310) and a limiting part (320). The elastic element (310) is disposed between the sliding part (130) and the groove wall of the sliding groove (210). The limiting part (320) is connected to the elastic element (310) and abuts against the edge of the socket (220), so that the end cap (200) can be restricted to the position of sealing the port (120).

2. The fuel cell stack housing as claimed in claim 1, characterized in that, One end of the elastic member (310) is connected to the limiting part (320), and the other end is connected to the sliding part (130).

3. The fuel cell stack housing as described in claim 1, characterized in that, The limiting part (320) has a spherical surface that abuts against the edge of the socket (220).

4. The fuel cell stack housing as claimed in claim 1, characterized in that, The end cap (200) has a bevel (230) at its corner, and the bevel (230) has the insertion hole (220) of two adjacent grooves (210).

5. The fuel cell stack housing as claimed in claim 1, characterized in that, The groove (210) has a first groove segment (211) and a second groove segment (212) distributed sequentially in the direction from the groove opening to the groove bottom. The width of the first groove segment (211) is smaller than that of the second groove segment (212). The sliding part (130) is adapted to be disposed in the second groove segment (212). The limiting part (320) is inserted into the second groove segment (212) through the first groove segment (211).

6. The fuel cell stack housing as claimed in claim 1, characterized in that, The stack housing also includes an inner liner (400), which is disposed in the mounting cavity (110) and abuts against the end cap (200).

7. The fuel cell stack housing as claimed in claim 6, characterized in that, The inner liner (400) is provided with a first through hole (410) communicating with the mounting cavity (110), and the end cap (200) is provided with a second through hole (240) communicating with the first through hole (410).

8. The fuel cell stack housing as claimed in claim 6, characterized in that, A buffer (500) is provided between the inner liner (400) and the end cap (200), and at least one of the inner liner (400) and the end cap (200) has a mounting groove (600) on one side facing each other, and the buffer (500) is installed in the mounting groove (600).

9. A fuel cell, characterized in that, Includes the fuel cell stack housing as described in any one of claims 1 to 8.

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