Connection terminal, fuel cell inspection connector, and fuel cell

Abstract

The application relates to the technical field of fuel cells, and provides a connecting terminal, a fuel cell inspection connector and a fuel cell, the connecting terminal comprising a connecting body, a wire connecting part and a battery connecting part; the wire connecting part is connected with the connecting body; the battery connecting part is connected with the connecting body; the battery connecting part comprises a first clamping sheet and a second clamping sheet arranged in parallel with the first clamping sheet; wherein one end of the first clamping sheet extends in a direction away from the second clamping sheet and has a first elastic sheet; one end of the second clamping sheet extends in a direction away from the first clamping sheet and has a second elastic sheet corresponding to the first elastic sheet. The application can improve the contact area with the battery, guarantee the reliability of the connection, and can also position and support the battery, thereby improving the stability of the connection.

Description

Technical Field

[0001] This invention relates to the field of fuel cell technology, and in particular to a connection terminal, a fuel cell inspection connector, and a fuel cell. Background Technology

[0002] The existing bipolar plates of the fuel cell stack are mainly connected to the cell voltage monitoring (CVM) controller using an electrical connector (CVP). During connection, the bipolar plates are first inserted into the electrical connector, and then the signal or electrical energy is transmitted to the CVM controller through wires for data and energy conversion.

[0003] Current fuel cell inspection connectors typically have multiple connection terminals, each corresponding to a single cell in the fuel cell, for detecting the fuel cell's status. Commonly used hydrogen fuel cell stack plates are primarily made of graphite or metal sheets. Graphite electrode connections involve drilling a hole in the graphite and inserting a square or flat contact terminal with pre-connected wires into the hole to enable conductivity. This method, where a set of wires with pins are directly inserted into the bipolar plate's socket for testing, is time-consuming, labor-intensive, and prone to unreliable contact, with the pins easily detaching from the socket, affecting the test results. Another approach is a two-metal clamp-type contact terminal. However, the current fuel cell cells are relatively thin, resulting in a small contact area between the current connection terminal and the cell, and a weak clamping force. Furthermore, due to differences in stack assembly processes and variations in the thermal expansion and contraction of bipolar plates during stacking and use in high and low temperature environments, the bipolar plates in the stack exhibit poor consistency, inconsistent spacing, and even some misaligned inserts. This leads to poor connection stability with the contact terminal structure, making the product prone to poor contact under vibration and impact, resulting in poor connector reliability, unstable cell voltage, and easy damage to the stack bipolar plates, ultimately reducing the stack's lifespan. Summary of the Invention

[0004] The purpose of this invention is to provide a connection terminal, a fuel cell inspection connector, and a fuel cell, which can increase the contact area with the battery, ensure the reliability of the connection, and provide positioning support with the battery, thereby improving the stability of the connection.

[0005] To solve the above-mentioned technical problems, the present invention provides a connection terminal, comprising:

[0006] Connecting main body;

[0007] A wire connection part, which is connected to the connection body;

[0008] A battery connection portion is connected to the connection body; the battery connection portion includes a first clamping piece and a second clamping piece arranged parallel to the first clamping piece;

[0009] Wherein, one end of the first clamping piece extends a first elastic piece in a direction away from the second clamping piece; one end of the second clamping piece extends a second elastic piece corresponding to the first elastic piece in a direction away from the first clamping piece.

[0010] The connecting terminal according to the present invention has at least the following beneficial effects:

[0011] The system includes a first clamping plate and a second clamping plate to hold the individual cells of the battery stack. The first and second clamping plates have a large contact area with the individual cells, so even if the individual cells are misaligned for various reasons, the contact area will not be affected, and voltage instability will not occur due to poor contact, thus improving the overall connection reliability. At the same time, the system also includes a first elastic plate and a second elastic plate, which are bent outwards and expanded into a trumpet shape, making it easy for the individual cells to be inserted between the first and second clamping plates, thus facilitating the connection of the connection terminals to the individual cells.

[0012] Preferably, the battery connection portion further includes:

[0013] A first lever arm, one end of which is connected to the connecting body, and the other end of which is connected to the first clamping piece, and the first lever arm bends toward the second clamping piece;

[0014] The second lever arm has one end connected to the connecting body and the other end connected to the second clamping piece, and the second lever arm bends toward the first clamping piece.

[0015] Preferably, the wire connection portion has crimping portions extending on both sides, which are used to crimp the external wire.

[0016] To address the aforementioned problems, the present invention also provides a fuel cell inspection connector for connecting a fuel cell having a first groove; comprising:

[0017] Multiple connection terminals as described in any of the above;

[0018] The mounting base has a connection channel, and a plurality of connection terminals are inserted into the connection channel in parallel and at intervals; the connection channel has a first end for docking with the fuel cell; the side wall of the first end has a slide corresponding to each connection terminal; the side wall of each slide has a limiting groove corresponding to the first groove.

[0019] A limiting component is hinged to the mounting base and abuts against the limiting groove and the first recess to limit the relative sliding of the mounting base and the fuel cell.

[0020] The fuel cell inspection connector according to the present invention has at least the following beneficial effects:

[0021] A connection channel is set up, and the connection terminal is installed in the connection channel. The connection terminal clamps the fuel cell by moving the mounting base, which facilitates the connection between the connector and the fuel cell. At the same time, a limiting component and a limiting groove are set up. When the first groove and the limiting groove are aligned, the limiting component can abut against the first groove and the limiting groove to limit the relative sliding of the mounting base and the fuel cell. This also makes the single cell not have to bear the weight of the connector and wires alone, thus improving the overall stability of the connection.

[0022] Preferably, the mounting base is provided with a support; the limiting component includes:

[0023] A limiting plate is hinged to the support by bolts; one end of the limiting plate extends into the limiting groove with a limiting block, and the other end of the limiting plate extends with a handle;

[0024] A torsion spring is sleeved on the bolt, with one end of the torsion spring abutting against the limiting plate and the other end of the torsion spring abutting against the mounting base.

[0025] Preferably, the connection channel has a second end, and the side wall of the second end has a locking hole; the fuel cell inspection connector further includes a backstop block, the side wall of the backstop block is provided with a first buckle that cooperates with the locking hole, the backstop block is inserted into the second end, and the first buckle is locked in the locking hole.

[0026] Preferably, the anti-reverse block has insertion holes corresponding to the connection terminals, and the wire connection part is inserted into the insertion hole; the anti-reverse block abuts against the connection body.

[0027] Preferably, the mounting base is provided with a slot, and the fuel cell inspection connector further includes a first retainer, which is slidably inserted into the slot.

[0028] Preferably, the first card holder has a sliding hole, and the fuel cell inspection connector further includes a second card holder, which is inserted into the sliding hole; the second card holder is provided with a second buckle, and the side wall of the sliding hole is provided with a groove that cooperates with the second buckle.

[0029] To address the above problems, the present invention also provides a fuel cell, comprising:

[0030] The fuel cell stack has a mating position and a first groove;

[0031] A plurality of fuel cell inspection connectors as described in any of the above claims are arranged side by side at the docking position; each fuel cell inspection connector is connected to the fuel cell stack.

[0032] The connection terminal is connected to the fuel cell stack, and the limiting component abuts against the limiting groove and the first groove to limit the relative sliding of the mounting base and the fuel cell.

[0033] The fuel cell inspection connector according to the present invention has at least the following beneficial effects:

[0034] The first groove is designed to abut against the limiting groove when they are aligned, thus limiting the relative sliding of the mounting base and the fuel cell. This also prevents the individual cells from bearing the weight of the connector and wires, improving the overall stability of the connection. Furthermore, the mating position allows the connector to be directly connected to the battery stack, improving the stability of the connection and preventing the connector from protruding, ensuring a more compact connection between the connector and the battery stack.

[0035] Preferably, the mounting base is provided with a slot, and the fuel cell inspection connector further includes a first retainer; the fuel cell stack has a second groove that mates with the first retainer, one end of the first retainer is inserted into the slot, and the other end of the first retainer is inserted into the second groove.

[0036] Preferably, the first card holder has a sliding hole, and the fuel cell inspection connector further includes a second card holder; the second card holder is provided with a second buckle, and the side wall of the sliding hole is provided with a slot that cooperates with the second buckle; the battery stack has a third groove that cooperates with the second card holder, one end of the second card holder passes through the sliding hole and is inserted into the third groove, and the second buckle is engaged in the slot.

[0037] Other features and advantages of the invention will be set forth in the description which follows, and will be apparent in part from the description, or may be learned by practicing the invention. Attached Figure Description

[0038] Figure 1 This is a schematic diagram of the structure of the connection terminal provided in an embodiment of the present invention;

[0039] Figure 2 This is a schematic diagram of a structure for holding a single battery with a connection terminal provided in an embodiment of the present invention;

[0040] Figure 3 This is a schematic diagram of another structure for holding a single battery with a connection terminal provided in an embodiment of the present invention;

[0041] Figure 4 This is a schematic diagram of the structure of the fuel cell inspection connector provided in an embodiment of the present invention;

[0042] Figure 5 This is an exploded view of the fuel cell inspection connector provided in an embodiment of the present invention;

[0043] Figure 6 This is a schematic diagram of the structure of a fuel cell provided in an embodiment of the present invention;

[0044] Figure 7 This is an enlarged view of the connection of the fuel cell stack inspection connector;

[0045] Figure 8 This is a magnified view of a portion of the battery stack.

[0046] Figure label:

[0047] 100. Connecting terminal; 200. Fuel cell inspection connector; 300. Fuel cell;

[0048] 1. Connecting body; 2. Wire connection part; 3. Battery connection part; 31. First clamping piece; 31a. First elastic piece; 32. Second clamping piece; 32a. Second elastic piece; 33. First lever arm; 34. Second lever arm; 4. Crimping part;

[0049] 5. Mounting base; 51. Connecting channel; 51a. Slide rail; 51b. Limiting groove; 51c. Locking hole; 52. Slot; 6. Limiting assembly; 61. Limiting plate; 61a. Limiting block; 61b. Handle; 62. Torsion spring; 63. Bolt; 7. Anti-reverse block; 71. First latch; 8. First latch seat; 81. Slide hole; 9. Second latch seat; 91. Second latch;

[0050] 10. Fuel cell stack; 101. First groove; 102. Second groove; 103. Third groove; 104. Docking point; 105. Single cell. Detailed Implementation

[0051] 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 some embodiments of this application, and not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0052] In the description of this application, it should be understood that the terms "center", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this application.

[0053] In the description of this application, it should be noted that, unless otherwise expressly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection between two components. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.

[0054] refer to Figures 1 to 8 The present invention describes a fuel cell inspection connector 200, which is suitable for a fuel cell having a first recess 101, a second recess 102, and a third recess 103. The connection terminal 100, the fuel cell inspection connector 200, and the fuel cell are described below with specific examples.

[0055] See Figure 1 As shown, a preferred embodiment of the present invention provides a connection terminal 100, including a connection body 1, a wire connection portion 2, and a battery connection portion 3; the wire connection portion 2 is connected to the connection body 1; the battery connection portion 3 is connected to the connection body 1; the battery connection portion 3 includes a first clamping piece 31 and a second clamping piece 32 arranged parallel to the first clamping piece 31; wherein, one end of the first clamping piece 31 extends a first elastic piece 31a in a direction away from the second clamping piece 32; one end of the second clamping piece 32 extends a second elastic piece 32a corresponding to the first elastic piece 31a in a direction away from the first clamping piece 31.

[0056] See Figure 2 As shown, when the single battery 105 is held vertically, the single battery 105 of the battery stack is held by the first clamping piece 31 and the second clamping piece 32. The contact area between the first clamping piece 31 and the second clamping piece 32 and the single battery 105 is large, the clamping is stable, and the connection is firm and reliable.

[0057] See Figure 3As shown, when the clamped single battery 105 is tilted, one side wall of the single battery 105 will abut against one of the clamping pieces and simultaneously against one of the elastic pieces. Therefore, even if the single battery 105 is tilted for various reasons, it will not affect the contact area and will not cause voltage instability due to poor contact, thus improving the overall connection reliability. At the same time, a first elastic piece 31a and a second elastic piece 32a are provided. The first elastic piece 31a and the second elastic piece 32a are respectively bent outward and expanded into a trumpet shape, which facilitates the insertion of the single battery 105 between the first clamping piece 31 and the second clamping piece 32, that is, facilitates the connection of the connection terminal 100 to the single battery 105.

[0058] In some preferred embodiments of the present invention, the battery connection portion 3 further includes a first lever arm 33 and a second lever arm 34. One end of the first lever arm 33 is connected to the connecting body 1, and the other end of the first lever arm 33 is connected to the first clamping piece 31, and the first lever arm 33 bends towards the second clamping piece 32. One end of the second lever arm 34 is connected to the connecting body 1, and the other end of the second lever arm 34 is connected to the second clamping piece 32, and the second lever arm 34 bends towards the first clamping piece 31. In this way, the first lever arm 33 and the second lever arm 34 can provide an inward supporting force for the first clamping piece 31 and the second clamping piece 32 respectively, improving the clamping force of the first clamping piece 31 and the second clamping piece 32; at the same time, when the single battery 105 is tilted, it can prevent the first clamping piece 31 and the second clamping piece 32 from being squeezed by the single battery 105, which would cause the gap between them to be too large and affect the clamping force.

[0059] In some preferred embodiments of the present invention, crimping portions 4 extend from both sides of the wire connection portion 2, and the crimping portions 4 are used to press the external wire. Specifically, the crimping portions 4 can press the wire when it is placed in the wire connection portion 2 to ensure a stable and reliable connection.

[0060] See Figure 4 and Figure 5 As shown, a preferred embodiment of the present invention also provides a fuel cell inspection connector 200 for connecting a fuel cell 300 having a first groove 101; it includes a plurality of connection terminals 100 as described above, a mounting base 5, and a limiting component 6; the mounting base 5 has a connection channel 51, and the plurality of connection terminals 100 are arranged side by side and spaced apart in the connection channel 51; the connection channel 51 has a first end that engages with the fuel cell; the side wall of the first end has a slide rail 51a corresponding to each connection terminal 100; the side wall of each slide rail 51a has a limiting groove 51b corresponding to the first groove 101; the limiting component 6 is hinged to the mounting base 5, and the limiting component 6 abuts against the limiting groove 51b and the first groove 101 to limit the relative sliding of the mounting base 5 and the fuel cell.

[0061] The connecting terminal 100 is installed in the connecting channel 51. The connecting terminal 100 is clamped by the moving mounting base 5, which facilitates the connection between the connector and the fuel cell. At the same time, a limiting component 6 and a limiting groove 51b are provided. When the first groove 101 and the limiting groove 51b are aligned, the limiting component 6 can abut against the first groove 101 and the limiting groove 51b to limit the relative sliding between the mounting base 5 and the fuel cell. This also prevents the single cell 105 from bearing the weight of the connector and wires alone, thus improving the overall stability of the connection.

[0062] In some preferred embodiments of the present invention, the mounting base 5 is provided with a support; the limiting component 6 includes a limiting plate 61 and a torsion spring 62, the limiting plate 61 being hinged to the support by a bolt 63; one end of the limiting plate 61 extends a limiting block 61a towards the limiting groove 51b, and the other end of the limiting plate 61 extends a handle 61b; the torsion spring 62 is sleeved on the bolt 63, one end of the torsion spring 62 abutting against the limiting plate 61, and the other end of the torsion spring 62 abutting against the mounting base 5. Thus, when it is necessary to connect the connector and the fuel cell, the handle 61b is pressed down to lift the limiting block 61a, aligning and connecting the connection terminal 100 and the single battery 105, and aligning the first groove 101 and the limiting groove 51b. After that, the handle 61b is released to lower the limiting block 61a. Due to the torsion spring 62, the limiting block 61a presses against the first groove 101 and the limiting groove 51b, thus limiting the connection.

[0063] In some preferred embodiments of the present invention, the connecting channel 51 has a second end, and a locking hole 51c is provided on the side wall of the second end; the fuel cell inspection connector 200 further includes a backstop block 7, and the side wall of the backstop block 7 is provided with a first latch 71 that cooperates with the locking hole 51c. The backstop block 7 is inserted into the second end, and the first latch 71 is engaged in the locking hole 51c. In this way, the backstop block 7 blocks the connecting terminal 100, ensuring that the connecting terminal 100 will not retract when connected to the single battery 105, thus ensuring the stability of the connection.

[0064] In some preferred embodiments of the present invention, the anti-reverse block 7 has insertion holes corresponding one-to-one with the connecting terminals 100, and the wire connection part 2 is inserted into the insertion holes; the anti-reverse block 7 abuts against the connecting body 1. In this way, while blocking the connecting terminals 100, the wire connection part 2 is inserted into the insertion holes, ensuring that the wire connection part 2 is connected to the external wires.

[0065] In some preferred embodiments of the present invention, the mounting base 5 is provided with a slot 52, and the fuel cell inspection connector 200 further includes a first retainer 8, which is slidably inserted into the slot 52. Thus, the first retainer 8 can slide within the slot 52, and if necessary, can extend out and abut against an external groove or hole for positioning.

[0066] In some preferred embodiments of the present invention, the first mounting base 8 has a sliding hole 81, and the fuel cell inspection connector 200 further includes a second mounting base 9, which is inserted into the sliding hole 81. The second mounting base 9 is provided with a second latch 91, and the side wall of the sliding hole 81 is provided with a groove that cooperates with the second latch 91. Thus, when the first mounting base 8 slides out of the slot 52 and abuts against the external groove, the second mounting base 9 can be inserted into the sliding hole 81 to lock the first mounting base 8 in place, preventing it from sliding, thereby achieving further positioning and support for the mounting base 5.

[0067] See Figure 6 , Figure 7 and Figure 8 As shown, for ease of observation, Figure 6 Only one fuel cell inspection connector 200 is retained; a preferred embodiment of the present invention also provides a fuel cell 300, including a stack 10 and a plurality of fuel cell inspection connectors 200 as described above. The stack 10 has a mating position 104 and a first groove 101. The plurality of fuel cell inspection connectors 200 are arranged side by side at the mating position 104. Each fuel cell inspection connector 200 is connected to the stack 10. The connecting terminal 100 is connected to the stack 10, and the limiting component 6 abuts against the limiting groove 51b and the first groove 101 to limit the relative sliding of the mounting base 5 and the fuel cell.

[0068] When the first groove 101 is aligned with the limiting groove 51b, the first groove 101 and the limiting groove 51b abut against each other, which restricts the relative sliding of the mounting base 5 and the fuel cell, and makes the single cell 105 not have to bear the weight of the connector and wires alone, thus improving the overall connection stability; and the mating position 104 is provided so that the connector can be directly connected to the battery stack at the mating position 104, which improves the connection stability and avoids the connector protruding, ensuring that the connector and the battery stack are more compact.

[0069] It should be noted that the fuel cell also includes two end plates that clamp the fuel cell stack 10, which includes multiple stacked single cells 105.

[0070] In some preferred embodiments of the present invention, the mounting base 5 is provided with a slot 52, and the fuel cell inspection connector 200 further includes a first retainer 8; the fuel cell stack 10 has a second groove 102 that mates with the first retainer 8, with one end of the first retainer 8 inserted into the slot 52 and the other end of the first retainer 8 inserted into the second groove 102. Specifically, the first retainer 8 can slide within the slot 52, and if necessary, can extend to abut against the second groove 102 for further positioning and support, improving the stability of the connection.

[0071] In some preferred embodiments of the present invention, the first mounting base 8 has a sliding hole 81, and the fuel cell inspection connector 200 further includes a second mounting base 9; the second mounting base 9 is provided with a second latch 91, and the side wall of the sliding hole 81 is provided with a slot that cooperates with the second latch 91; the battery stack has a third groove 103 that cooperates with the second mounting base 9, one end of the second mounting base 9 passes through the sliding hole 81 and is inserted into the third groove 103, and the second latch 91 is engaged in the slot. Thus, when the first mounting base 8 slides out of the slot 52 and abuts against the second groove 102, the second mounting base 9 can pass through the sliding hole 81 and be inserted into the third groove 103 to engage the first mounting base 8, preventing it from sliding, thereby achieving further positioning and support for the mounting base 5.

[0072] The above description is only a preferred embodiment of the present invention. It should be noted that for those skilled in the art, several improvements and substitutions can be made without departing from the technical principles of the present invention, and these improvements and substitutions should also be considered within the scope of protection of the present invention.

Claims

1. A connecting terminal, characterized in that, include: Connecting main body (1); The wire connection part (2) is connected to the connection body (1); Battery connection part (3), the battery connection part (3) is connected to the connection body (1); the battery connection part (3) includes a first clamping piece (31) and a second clamping piece (32) arranged in parallel with the first clamping piece (31). Wherein, one end of the first clamping piece (31) extends in a direction away from the second clamping piece (32) and has a first elastic piece (31a); one end of the second clamping piece (32) extends in a direction away from the first clamping piece (31) and has a second elastic piece (32a) corresponding to the first elastic piece (31a). The battery connection part (3) further includes: A first lever arm (33) is connected at one end to the connecting body (1) and at the other end to the first clamping piece (31), and the first lever arm (33) bends toward the second clamping piece (32); The second lever arm (34) has one end connected to the connecting body (1) and the other end connected to the second clamping piece (32), and the second lever arm (34) bends toward the first clamping piece (31); When the single battery being clamped is in a vertical position, the first clamping piece and the second clamping piece clamp the single battery. When the single cell is tilted, one side wall of the single cell abuts against the first clamping piece or the second clamping piece, and simultaneously abuts against the first elastic piece or the second elastic piece.

2. The connection terminal according to claim 1, characterized in that: The wire connection part (2) has crimping parts (4) extending on both sides, which are used to crimp the external wire.

3. A fuel cell inspection connector for connecting a fuel cell having a first groove (101); characterized in that, include: Multiple connection terminals as described in claim 1 or 2; Mounting base (5), the mounting base (5) has a connection channel (51), and a plurality of connection terminals are inserted side by side and spaced apart in the connection channel (51); the connection channel (51) has a first end for docking with the fuel cell; the side wall of the first end has a slide (51a) corresponding to each connection terminal; the side wall of each slide (51a) has a limiting groove (51b) corresponding to the first groove (101); A limiting component (6) is hinged to the mounting base (5) and abuts against the limiting groove (51b) and the first groove (101) to limit the relative sliding of the mounting base (5) and the fuel cell.

4. The fuel cell inspection connector according to claim 3, characterized in that: The mounting base (5) is provided with a support; the limiting component (6) includes: A limiting plate (61) is hinged to the support by bolts (63); one end of the limiting plate (61) extends into the direction of the limiting groove (51b) with a limiting block (61a), and the other end of the limiting plate (61) extends with a handle (61b). A torsion spring (62) is sleeved on the bolt (63), one end of the torsion spring (62) abuts against the limiting plate (61), and the other end of the torsion spring (62) abuts against the mounting base (5).

5. The fuel cell inspection connector according to claim 3, characterized in that: The connection channel (51) has a second end, and a snap hole (51c) is provided on the side wall of the second end; the fuel cell inspection connector also includes a backstop block (7), and the side wall of the backstop block (7) is provided with a first buckle (71) that cooperates with the snap hole (51c). The backstop block (7) is inserted into the second end, and the first buckle (71) is snapped into the snap hole (51c).

6. The fuel cell inspection connector according to claim 5, characterized in that: The anti-reverse block (7) has a plug hole corresponding to each of the connecting terminals, and the wire connecting part (2) is inserted into the plug hole; the anti-reverse block (7) abuts against the connecting body (1).

7. A fuel cell, characterized in that, include: The fuel cell stack (10) has a mating position (104) and a first groove (101). A plurality of fuel cell inspection connectors as described in any one of claims 3-6 are arranged side by side at the docking position (104); each fuel cell inspection connector is connected to the fuel cell stack (10); The connection terminal is connected to the fuel cell stack (10), and the limiting component (6) abuts against the limiting groove (51b) and the first groove (101) to limit the relative sliding of the mounting base (5) and the fuel cell.

8. The fuel cell according to claim 7, characterized in that: The mounting base (5) is provided with a slot (52), and the fuel cell inspection connector also includes a first card holder (8); the stack (10) is provided with a second groove (102) that cooperates with the first card holder (8), one end of the first card holder (8) is inserted into the slot (52), and the other end of the first card holder (8) is inserted into the second groove (102).

9. The fuel cell according to claim 8, characterized in that: The first card holder (8) has a sliding hole (81), and the fuel cell inspection connector also includes a second card holder (9); the second card holder (9) is provided with a second buckle (91), and the side wall of the sliding hole (81) is provided with a slot that cooperates with the second buckle (91); the fuel cell stack (10) has a third groove (103) that cooperates with the second card holder (9), one end of the second card holder (9) passes through the sliding hole (81) and is inserted into the third groove (103), and the second buckle (91) is engaged in the slot.

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