Connector for quick-plug type hydrogen fuel cell and connector matching structure

Abstract

The utility model discloses a connector and a connector matching structure for a quick-plug type hydrogen fuel cell, and relates to the field of connectors on automobile batteries, the connector comprises a connector main body, the connector main body is provided with a locking pin and a locking elastic tongue, the locking pin is in sliding connection with the connector main body, and the locking elastic tongue is connected with the connector main body. And the locking elastic tongue is fixedly connected with the connector main body and is positioned on a sliding path of the locking pin. The locking pin and the locking elastic tongue are matched to realize quick hanging connection of the connector and the bipolar plate of the hydrogen energy battery pack, welding is not needed, the conditions of insufficient welding and wire falling during welding are avoided, the locking pin is pressed to move downwards, then the locking elastic tongue is triggered to deform to be hung between the connector and the bipolar plate of the hydrogen energy battery pack, assembly and disassembly are relatively convenient, and the cost is low. The requirement for assembly of workers is low, the workload is small, the situation that the workload of assembly and disassembly is large in the connection mode through a single metal contact pin is avoided, and the technical problem that in the prior art, technical defects exist in stable connection between the bipolar plate and the connector is solved.

Description

Technical Field

[0001] This utility model relates to the technical field of connectors for automotive batteries, and in particular to a connector and connector mating structure for quick-connect hydrogen fuel cells. Background Technology

[0002] The automotive industry is gradually transitioning to new energy sources. Hydrogen fuel cells are a type of power source that converts the chemical energy of hydrogen and oxygen into electrical energy through an electrochemical reaction. These fuel cells have advantages such as being pollution-free, noise-free, and highly efficient, and are hailed as the most promising automotive power source at present.

[0003] The core components of a hydrogen fuel cell are the bipolar plates and the controller. The bipolar plates, located between the positive and negative electrodes, isolate the electrodes and catalyze the reaction of hydrogen and oxygen, converting chemical energy into electrical energy. The fuel cell controller manages the energy output and power distribution of the fuel cell system to ensure stable and efficient vehicle operation. The connector acts as a bridge between the bipolar plates and the controller, transmitting the bipolar plate voltage signals to the controller for judgment, identification, and appropriate control operations.

[0004] Currently, there are two main types of connections between bipolar plates and controllers. One type uses welding to fix the wires to the bipolar plates for both fixing and transmitting electrical signals. The other type uses a single metal pin inserted into the plate's inspection port for signal transmission, secured by a single clamping block. Welding requires high precision in the production process and is prone to issues like incomplete welds and wire detachment, leading to signal loss. While the single metal pin connection method is simple in structure, it requires individual pin handling during fuel cell assembly and disassembly, demanding high skill from workers and involving a significant workload. Both methods have drawbacks, hindering rapid connector installation and removal. Therefore, achieving a stable connection between the bipolar plates and connectors while avoiding defects such as incomplete welds, wire detachment, and excessive workload remains a challenging technical problem. Utility Model Content

[0005] To address the shortcomings in the aforementioned background technology, this utility model proposes a connector and connector mating structure for quick-connect hydrogen fuel cells, which solves the technical problems of poor soldering, wire detachment, and large workload in the stable connection between bipolar plates and connectors in the prior art.

[0006] The technical solution of this utility model is implemented as follows: A connector for a quick-connect hydrogen fuel cell includes a connector body. The connector body has several cavity holes inside. The lower part of the connector body has several slots for docking with the bipolar plates of the hydrogen fuel cell pack. The slots correspond one-to-one with the cavity holes and are connected. Contact terminals are inserted into the cavity holes. The connector body is provided with a locking pin and a locking spring for connecting with the bipolar plates of the hydrogen fuel cell pack after deformation. The locking pin is slidably connected to the connector body. The locking spring is fixedly connected to the connector body and located on the sliding path of the locking pin.

[0007] Preferably, the connector body is provided with a connection hole, the inner wall of the connection hole is provided with a guide groove, and both sides of the locking pin are guide posts, the guide posts and the guide groove are slidably connected.

[0008] Preferably, the guide post is provided with a first locking boss and a second locking boss, the second locking boss and the first locking boss are arranged sequentially along the insertion direction of the locking pin, and a stop block is provided in the guide groove. When the locking pin is inserted into the pre-installed position along the guide groove, the second locking boss and the stop block are engaged in a stop engagement; when the locking pin is inserted into the final position along the guide groove, the first locking boss and the stop block are engaged in a stop engagement.

[0009] Preferably, the locking spring includes an elastic plate, one end of which is connected to the groove wall of the connecting hole and the other end is connected to a hooking protrusion. The elastic plate is inclinedly disposed on the insertion path of the locking pin, and the hooking protrusion is located on the side of the elastic plate away from the locking pin.

[0010] Preferably, the locking pin is provided with a braking structure for pushing the locking spring to rotate; the top of the locking pin is provided with a pressing structure.

[0011] Preferably, the connector body is provided with a secondary locking structure for secondary locking of the contact terminals.

[0012] Preferably, the connector body has a secondary locking engagement cavity, which is perpendicular to and communicates with the cavity hole. The secondary locking structure is inserted into the secondary locking engagement cavity. A limiting step is provided inside the cavity hole, and a square box and a secondary locking block are provided on the contact terminal. A hanging spring is provided on the square box. When the contact terminal is inserted along the cavity hole, the hanging spring engages with the limiting step to complete the first locking, and the secondary locking structure and the secondary locking block stop each other to complete the second locking.

[0013] Preferably, the secondary locking structure is provided with a limiting boss, and the secondary locking cavity is provided with a limiting plane, and the limiting boss and the limiting plane are mutually limiting and engaging.

[0014] A connector mating structure includes a hydrogen fuel cell pack bipolar plate and the aforementioned connector. When the locking pin is inserted into the final position along the guide groove, the hydrogen fuel cell pack bipolar plate is plugged into and connected with the contact terminal, and the locking spring is deformed and engaged with the hydrogen fuel cell pack bipolar plate.

[0015] Preferably, the bipolar plate of the hydrogen battery pack is provided with a locking hook, and the contact terminal is provided with a contact spring. When the locking pin is inserted into the final position along the guide groove, the bipolar plate of the hydrogen battery pack is connected to the contact spring, and the locking spring is deformed and engaged with the locking hook.

[0016] The beneficial effects of this utility model are as follows: This utility model achieves quick connection between the connector and the bipolar plate of the hydrogen fuel cell pack through the cooperation of the locking pin and the locking spring, eliminating the need for welding and avoiding issues such as incomplete soldering and wire detachment during welding. Furthermore, the connection between the connector and the bipolar plate of the hydrogen fuel cell pack is a hook-and-loop connection. By pressing the locking pin, it moves downward, triggering the deformation of the locking spring to hook onto the bipolar plate. This makes assembly and disassembly convenient, requiring less skill from workers and involving less workload. It avoids the significant workload associated with connections using a single metal pin, thus solving the technical problem of unstable connections between the bipolar plate and the connector in existing technologies. Attached Figure Description

[0017] To more clearly illustrate the embodiments of this utility model, the drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0018] Figure 1 This is a schematic diagram of the connector of this utility model.

[0019] Figure 2 This is a schematic diagram of the connector body of this utility model.

[0020] Figure 3 This is a perspective view of the locking pin of this utility model.

[0021] Figure 4 for Figure 3 Enlarged view of point A in the middle.

[0022] Figure 5 This is a schematic diagram showing the connection between the locking pin and the connector body at the pre-installed position.

[0023] Figure 6 This is a schematic diagram showing the connection between the connector body and the secondary locking structure of this utility model.

[0024] Figure 7 for Figure 6 Enlarged view of section B in the middle.

[0025] Figure 8 This is a cross-sectional view showing the connection between the locking pin and the connector body of this utility model.

[0026] Figure 9 This is a schematic diagram of the insertion of the connector body and the contact terminal of this utility model.

[0027] Figure 10 This is a cross-sectional view of the connector body and contact terminals of this utility model being inserted.

[0028] Figure 11 This is a schematic diagram showing the connection between the connector of this utility model and the bipolar plate of the hydrogen energy battery pack.

[0029] Figure 12 This is a schematic diagram showing the connection between the connector at the pre-installed position and the bipolar plate of the hydrogen fuel cell pack.

[0030] Figure 13 This is a schematic diagram showing the final connection between the connector and the bipolar plate of the hydrogen fuel cell pack.

[0031] Figure 14 This is a schematic diagram showing the connection between the locking pin and the connector body in its final position.

[0032] Figure 15 This is a schematic diagram showing the insertion of the bipolar plates of the hydrogen fuel cell pack and the connecting spring in their final positions.

[0033] In the figure, 1 is the connector body, 1-1 is the guide groove, 1-1-1 is the stop block, 1-2 is the cavity hole, 1-2-1 is the limiting step, 1-3 is the secondary locking mating cavity, 1-3a is the limiting plane, 1-4 is the locking spring, 1-4-1 is the locking boss, 1-4-2 is the elastic plate, 1-5 is the slot, 1-6 is the connecting hole, 2 is the locking pin, 2-1 is the guide post, 2-1-1 is the first locking boss, 2-1-2 is the second locking boss, 2-2 is the braking structure, 2-2a is the braking surface, 2-3 is the pressing structure, 3 is the secondary locking structure, 3-1 is the limiting boss, 3-2 is the stop plane, 4 is the contact terminal, 4-1 is the square box, 4-1-1 is the hanging spring, 4-2 is the contact spring, 4-3 is the conductor crimping area, 4-4 is the insulation crimping area, 4-5 is the secondary locking block, 5 is the hydrogen energy battery pack bipolar plate, and 5-1 is the locking hook. Detailed Implementation

[0034] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0035] Example 1: A connector for quick-connect hydrogen fuel cells, such as... Figure 1 , Figure 2 , Figure 6 , Figure 9 and Figure 10 As shown, the connector includes a connector body 1, which has several cavity holes 1-2 inside. The lower part of the connector body 1 has several slots 1-5 for connecting to the bipolar plates 5 of the hydrogen energy battery pack. The slots 1-5 correspond one-to-one with the cavity holes 1-2 and are connected. Contact terminals 4 are inserted into the cavity holes 1-2. The connector body 1 is provided with a locking pin 2 and a locking spring tongue 1-4 for connecting to the bipolar plates 5 of the hydrogen energy battery pack after deformation. The locking pin 2 is slidably connected to the connector body 1, and the locking spring tongue 1-4 is fixedly connected to the connector body 1 and located on the sliding path of the locking pin 2. The connector and the bipolar plate 5 of the hydrogen fuel cell pack are quickly connected by the locking pin 2 and the locking spring 1-4, eliminating the need for welding and avoiding issues such as incomplete soldering and wire detachment. The connection between the connector and the bipolar plate 5 is a hook-and-loop connection. Pressing the locking pin 2 causes it to move downwards, triggering the deformation of the locking spring 1-4 to engage with the bipolar plate 5. This makes assembly and disassembly convenient, requiring less skill from workers and minimizing workload. It avoids the significant workload associated with connections using a single metal pin, thus resolving the technical defects in the stable connection between the bipolar plate and the connector in existing technologies.

[0036] Example 2, based on Example 1, provides a connector for a quick-connect hydrogen fuel cell, such as... Figure 1 and Figure 2 As shown, the connector body 1 has a connecting hole 1-6, and the inner wall of the connecting hole 1-6 has a guide groove 1-1. Both sides of the locking pin 2 are guide posts 2-1, and the guide posts 2-1 are slidably connected to the guide groove 1-1. The slidable connection between the guide posts 2-1 and the guide groove 1-1 enables the locking pin 2 to be slidably connected to the connector body 1. The guide groove 1-1 and the guide posts 2-1 are provided to limit the sliding of the locking pin 2.

[0037] Example 3, based on Example 2, provides a connector for a quick-connect hydrogen fuel cell, such as... Figure 3 , Figure 4 and Figure 5 As shown, the guide post 2-1 is provided with a first locking boss 2-1-1 and a second locking boss 2-1-2. The second locking boss 2-1-2 and the first locking boss 2-1-1 are arranged sequentially along the insertion direction of the locking pin 2. A stop block 1-1-1 is provided in the guide groove 1-1. When the locking pin 2 is inserted into the pre-installed position along the guide groove 1-1, the second locking boss 2-1-2 and the stop block 1-1-1 engage in a stop engagement. When the locking pin 2 is inserted into the final position along the guide groove 1-1, the first locking boss 2-1-1 and the stop block 1-1-1 engage in a stop engagement. The first locking boss 2-1-1 and the second locking boss 2-1-2 are provided to keep the locking pin 2 in the pre-installed position and the final position, respectively. The upper limit surface of the first locking boss 2-1-1 of the locking pin 2 engages with the stop surface of the connector body 1 to prevent the locking pin from coming out under non-human-caused circumstances and to ensure reliable connection during use.

[0038] Example 4, based on Example 3, provides a connector for a quick-connect hydrogen fuel cell, such as... Figure 1 , Figure 2 , Figure 9 and Figure 10 As shown, the locking spring 1-4 includes an elastic plate 1-4-2. One end of the elastic plate 1-4-2 is connected to the groove wall of the connecting hole 1-6, and the other end is connected to a hooking protrusion 1-4-1. The elastic plate 1-4-2 is inclinedly disposed on the insertion path of the locking pin 2, and the hooking protrusion 1-4-1 is located on the side of the elastic plate 1-4-2 away from the locking pin 2. The hooking protrusion 1-4-1 is provided for hooking the bipolar plate 5 of the hydrogen fuel cell pack. When the locking pin 2 is inserted, the elastic plate 1-4-2 is compressed and deformed. After the elastic plate 1-4-2 is deformed, the hooking protrusion 1-4-1 on the elastic plate 1-4-2 hooks onto the bipolar plate 5 of the hydrogen fuel cell pack.

[0039] Example 5, based on Example 4, provides a connector for a quick-connect hydrogen fuel cell, such as... Figure 1 , Figure 2 , Figure 3 , Figure 12 and Figure 13 As shown, the locking pin 2 is provided with a braking structure 2-2 for pushing the locking spring 1-4 to rotate; the top of the locking pin 2 is provided with a pressing structure 2-3. The braking surface 2-2a on the braking structure 2-2 pushes the passive surface 1-4a of the locking spring 1-4 of the connector body 1, causing the locking spring 1-4 to rotate and reach the locked position.

[0040] Example 6, based on any one of Examples 1 to 5, a connector for a quick-connect hydrogen fuel cell, such as... Figure 6 , Figure 7 , Figure 8 , Figure 10 , Figure 12 and Figure 13 As shown, the connector body 1 is provided with a secondary locking structure 3 for secondary locking of the contact terminal 4. The secondary locking structure 3 is provided to perform secondary locking of the contact terminal 4, thereby improving the holding force of the contact terminal 4 in the connector.

[0041] Example 7, based on Example 6, provides a connector for a quick-connect hydrogen fuel cell, such as... Figure 6 , Figure 7 , Figure 8 , Figure 10 , Figure 12 and Figure 13 As shown, the connector body 1 has a secondary locking cavity 1-3, which is perpendicular to and communicates with the cavity 1-2. The secondary locking structure 3 is inserted into the secondary locking cavity 1-3. A limiting step 1-2-1 is provided inside the cavity 1-2. The contact terminal 4 has a square box 4-1 and a secondary locking block 4-5. The square box 4-1 has a hook spring 4-1-1. When the contact terminal 4 is inserted along the cavity 1-2, the hook spring 4-1-1 engages with the limiting step 1-2-1 to complete the first locking. The secondary locking structure 3 and the secondary locking block 4-5 then engage to complete the second locking. The secondary locking device 3, through its stop plane 3-2 engaging with the secondary locking block 4-5, restricts the contact terminal 4, achieving secondary locking of the contact terminal 4 in the connector body 1 and improving the retention force of the terminal in the connector.

[0042] Example 8, based on Example 7, provides a connector for a quick-connect hydrogen fuel cell, such as... Figure 8 As shown, the secondary locking structure 3 is provided with a limiting boss 3-1, and the secondary locking mating cavity 1-3 is provided with a limiting plane 1-3a. The limiting boss 3-1 and the limiting plane 1-3a are mutually limiting and mating. The secondary locking structure 3 is installed into the secondary locking mating cavity 1-3 of the connector body 1, and the secondary locking structure 3 is fixed by the cooperation between the limiting boss 3-1 and the limiting plane 1-3a.

[0043] In embodiment 8, the connector body 1 has 10 cavity holes 1-2 distributed on it to protect and fix the contact terminals 4. The end of the contact terminal 4 is designed with a square box 4-1 to protect the internal hanging spring 4-1-1 and the cavity hole 1-2 for assembly guidance and mating. At the same time, the terminal is designed with a conductor crimping area 4-3 and an insulation crimping area 4-4 to realize the connection and conduction with the wire. After the contact terminal 4 is crimped with the wire, it is inserted into the cavity hole 1-2 and fixed by the hanging spring 4-1-1 on the square box 4-1 and the limiting step 1-2-1 in the cavity hole 1-2. In addition, it can be stopped by the terminal stop surface, and stopped by the stop plane 3-2 on the secondary locking device 3 and the secondary locking block 4-5. The locking mechanism 3, in conjunction with the connector body 1, restricts the contact terminal 4, thus locking the contact terminal 4 in the connector body 1. The locking pin 2 is inserted along the guide groove 1-1, and the second locking boss 2-1-2 engages with the stop block 1-1-1, preventing the locking pin 2 from moving further. At this point, the locking pin 2 reaches the pre-assembly position. Simultaneously, the upper limit surface of the second locking boss 2-1-2 engages with the stop block 1-1-1, preventing the locking pin 2 from coming out upwards. The pressing structure 2-3 is pressed downwards, causing the locking pin 2 to continue moving. The first locking boss 2-1-1 engages with the stop block 1-1-1, bringing the locking pin 2 to its final position. At this point, the elastic plate 1-4-2 is deformed by the locking pin 2.

[0044] Example 9, based on any one of Examples 1 to 8, provides a connector mating structure, such as... Figure 5 , Figure 11 , Figure 12 , Figure 13 and Figure 14 As shown, the device includes a hydrogen fuel cell pack bipolar plate 5 and the aforementioned connector. When the locking pin 2 is inserted into the final position along the guide groove 1-1, the hydrogen fuel cell pack bipolar plate 5 is connected to the contact terminal 4, and the locking spring 1-4 deforms and engages with the hydrogen fuel cell pack bipolar plate 5.

[0045] Example 10, based on Example 9, provides a connector mating structure, such as... Figure 9 , Figure 10 , Figure 13 , Figure 14 and Figure 15 As shown, the hydrogen energy battery pack bipolar plate 5 is provided with a locking hook 5-1, and the contact terminal 4 is provided with a contact spring 4-2. When the locking pin 2 is inserted into the final position along the guide groove 1-1, the hydrogen energy battery pack bipolar plate 5 and the contact spring 4-2 are connected and conductive, and the locking spring tongue 1-4 is deformed and engaged with the locking hook 5-1.

[0046] In Example 10, the connector is installed into the bipolar plate 5 of the hydrogen fuel cell pack. Then, the pressing structure 2-3 of the locking pin 2 is pressed. Through the braking surface 2-2a on the braking structure 2-2, the passive surface of the locking spring 1-4 of the connector body 1 is pushed, causing the locking spring 1-4 to rotate and finally reach the locked position. At this time, the locking boss 1-4-1 engages with the locking hook 5-1 of the bipolar plate 5 of the hydrogen fuel cell pack, thereby locking the connector. After the quick-connect connector is installed with the bipolar plate 5 of the hydrogen fuel cell pack, the contact spring 4-6 inside the contact terminal 4 makes electrical contact with the bipolar plate 5 of the hydrogen fuel cell pack, thereby collecting the voltage signal on the bipolar plate 5 of the hydrogen fuel cell pack and transmitting it to the controller for control operation.

[0047] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A connector for a quick-plug type hydrogen fuel cell, comprising a connector main body (1), characterized by: The inside of the connector body (1) is provided with a plurality of cavity holes (1-2), the lower part of the connector body (1) is provided with a plurality of insertion slots (1-5) for connecting the hydrogen energy battery pack bipolar plate (5), the insertion slots (1-5) correspond to and communicate with the cavity holes (1-2), and the contact terminals (4) are inserted into the cavity holes (1-2); The connector body (1) is provided with a locking pin (2) and a locking elastic tongue (1-4) which can be connected with the hydrogen energy battery pack bipolar plate (5) after deformation, the locking pin (2) is slidingly connected with the connector body (1), and the locking elastic tongue (1-4) is fixedly connected with the connector body (1) and located on the sliding path of the locking pin (2).

2. The connector for a quick-plug type hydrogen fuel cell according to claim 1, characterized by: The connector body (1) is provided with a connecting hole (1-6), the inner wall of the connecting hole (1-6) is provided with a guide groove (1-1), and the two sides of the locking pin (2) are guide columns (2-1); The guide column (2-1) is slidingly connected with the guide groove (1-1).

3. The connector for a quick-plug type hydrogen fuel cell according to claim 2, characterized by: The guide column (2-1) is provided with a first locking boss (2-1-1) and a second locking boss (2-1-2), and the second locking boss (2-1-2) and the first locking boss (2-1-1) are arranged in sequence along the insertion direction of the locking pin (2), the guide groove (1-1) is provided with a stop block (1-1-1), when the locking pin (2) is inserted into the preloading position along the guide groove (1-1), the second locking boss (2-1-2) is stopped and matched with the stop block (1-1-1); When the locking pin (2) is inserted into the final position along the guide groove (1-1), the first locking boss (2-1-1) is stopped and matched with the stop block (1-1-1).

4. The connector for a quick-plug type hydrogen fuel cell according to claim 3, characterized by: The locking elastic tongue (1-4) comprises an elastic plate (1-4-2), one end of the elastic plate (1-4-2) is connected with the groove wall of the connecting hole (1-6), the other end is connected with a hanging convex block (1-4-1), the elastic plate (1-4-2) is inclinedly arranged on the insertion path of the locking pin (2), and the hanging convex block (1-4-1) is located on the side of the elastic plate (1-4-2) away from the locking pin (2).

5. The connector for a quick-plug type hydrogen fuel cell according to claim 4, characterized by: The locking pin (2) is provided with a brake structure (2-2) for pushing the locking elastic tongue (1-4) to rotate; The top of the locking pin (2) is provided with a pressing structure (2-3).

6. The connector for a quick-plug type hydrogen fuel cell according to any one of claims 1 to 5, characterized by: The connector body (1) is provided with a secondary locking structure (3) for secondary locking of the contact terminal (4).

7. The connector for a quick-plug type hydrogen fuel cell according to claim 6, characterized by: The connector body (1) is provided with a secondary locking hole cavity (1-3), the secondary locking hole cavity (1-3) is vertically arranged and communicated with the cavity hole (1-2), the secondary locking structure (3) is inserted and matched with the secondary locking hole cavity (1-3); the cavity hole (1-2) is provided with a limiting step (1-2-1), the contact terminal (4) is provided with a square box (4-1) and a secondary locking block (4-5), the square box (4-1) is provided with a hanging elastic sheet (4-1-1), when the contact terminal (4) is inserted along the cavity hole (1-2), the hanging elastic sheet (4-1-1) is hung and matched with the limiting step (1-2-1) to complete the primary locking, the secondary locking structure (3) is blocked and matched with the secondary locking block (4-5) to complete the secondary locking.

8. The connector for a quick-plug type hydrogen fuel cell according to claim 7, characterized by: The secondary locking structure (3) is provided with a limiting boss (3-1), the secondary locking hole cavity (1-3) is provided with a limiting plane (1-3a), the limiting boss (3-1) is limited and matched with the limiting plane (1-3a).

9. A connector pair structure, comprising a hydrogen energy battery pack bipolar plate (5) and the connector according to any one of claims 1-8, when the locking pin (2) is inserted into the final position along the guide groove (1-1), the hydrogen energy battery pack bipolar plate (5) is inserted and conducted with the contact terminal (4), the locking elastic tongue (1-4) is deformed and hung and matched with the hydrogen energy battery pack bipolar plate (5).

10. The connector mating structure according to claim 9, characterized by: The hydrogen energy battery pack bipolar plate (5) is provided with a locking hook (5-1), the contact terminal (4) is provided with a contact elastic sheet (4-2), when the locking pin (2) is inserted into the final position along the guide groove (1-1), the hydrogen energy battery pack bipolar plate (5) is inserted and conducted with the contact elastic sheet (4-2), the locking elastic tongue (1-4) is deformed and hung and matched with the locking hook (5-1).

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