Bipolar plate voltage inspection anti-falling structure
By designing a combination of connectors and elastic clips on the bipolar plate of the fuel cell, the problem of detachment under traditional inspection methods is solved, and a stable connection is achieved under vibration and temperature changes, ensuring reliable acquisition and transmission of voltage signals.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2025-11-27
- Publication Date
- 2026-03-10
AI Technical Summary
Existing methods for checking the voltage of bipolar plates in fuel cells are prone to detachment under vibration and temperature changes, leading to detection failures. Furthermore, traditional connection methods are inefficient and have a poor pass rate.
The bipolar plate voltage inspection anti-dislodgement structure uses a connector and elastic buckle to ensure connection stability and resist vibration and temperature changes through the design of mounting slot, elastic buckle, metal pin and shock-absorbing buckle.
This improves the connection stability between the bipolar plate and the connector, preventing slippage and loosening, ensuring stable acquisition and transmission of voltage signals, and guaranteeing the stable operation of the fuel cell system.
Smart Images
Figure CN121642039A_ABST
Abstract
Description
Technical Field
[0001] This invention relates to the field of battery bipolar plate technology, specifically a bipolar plate voltage monitoring and anti-detachment structure. Background Technology
[0002] The bipolar plate voltage acquisition structure is a voltage monitoring device used in hydrogen fuel cell stacks. It adopts a long, flat design and mainly consists of acquisition components, elastic parts, a substrate, sampling electrodes, and a conductive layer. By being placed between the bipolar plates of the fuel cell stack, it monitors the voltage status of each individual cell in the fuel cell stack in real time. It can promptly detect adverse operating conditions such as low gas pressure, flooding, and anode gas poisoning, as well as mechanical damage. Through real-time analysis and processing of voltage data, it ensures the stable and reliable operation of individual fuel cell cells and improves the safety of the fuel cell system. It is widely applicable to new energy vehicles, energy storage devices, power systems, and other scenarios.
[0003] However, since the thickness of the metal bipolar plates in fuel cells is usually around 1 mm and is continuously decreasing, the traditional methods of using pin-type voltage inspection or welding wires to the bipolar plates not only require smaller probes and higher welding standards, resulting in low production efficiency and poor pass rate, but also, in subsequent use scenarios where the vehicle expands and contracts due to road vibrations and high and low temperature fluctuations, these traditional inspection methods are prone to problems such as loose connections, detachment, and surface corrosion, which can lead to fuel cell voltage detection failures and render the vehicle unusable. Summary of the Invention
[0004] (I) Technical problem to be solved: In view of the shortcomings of the existing technology, the present invention provides a bipolar plate voltage inspection anti-detachment structure, which has the advantage of more stable connection with the bipolar plate and solves the problem of the existing inspection voltage acquisition structure not being firmly connected to the bipolar plate.
[0005] (II) Technical Solution: To achieve the above-mentioned goal of more stable connection with the bipolar plate, the present invention provides the following technical solution: a bipolar plate voltage inspection and anti-dislodgement structure, including a connector and an elastic buckle. The connector is provided with two or more sets of mounting slots, and a bipolar plate is inserted into the mounting slot. The elastic buckle is rotatably installed on the connector and snaps the bipolar plate into the mounting slot. The connector is provided with two or more sets of connection holes communicating with the mounting slot. Metal pins extending from the inside of the connection holes are fixedly assembled in the connection holes towards the mounting slot. One end of the metal pin is provided with an elastic contact that snaps into the bipolar plate. The other end of the metal pin is inserted with a wire. A shock-absorbing buckle is also inserted into the connection hole to clamp the metal pin in the connection hole.
[0006] Preferably, the bipolar plate has a horizontal fixing groove and a vertical fixing groove, which are respectively formed on two adjacent vertical sides of the bipolar plate, and the horizontal fixing groove and the vertical fixing groove are perpendicular to each other. The connector also has a limiting groove, which extends through the connector in a direction perpendicular to the side of the mounting groove, and the shape of the limiting groove matches the shape of the vertical fixing groove. The elastic buckle is engaged in the limiting groove. The length of the mounting groove is equal to the length of the horizontal fixing groove, and the distance between the bottom edge of the mounting groove and the bottom end face of the connector is equal to the width of the horizontal fixing groove. The bottom edge of the mounting groove is engaged in the horizontal fixing groove.
[0007] Preferably, the shock-absorbing buckle is a push rod buckle, and an elastic push rod is provided at one end of the push rod buckle near the metal pin. Both ends of the inner side of the metal pin are provided with guide slopes perpendicular to the axis of the elastic push rod. The guide slopes at both ends gradually approach and tighten in a vertically downward direction, and the elastic push rod is engaged between the guide slopes at both ends. During the process of the elastic push rod being inserted between the guide slopes at both ends, the push rod exerts downward pressure on the guide slopes at both ends in a vertically downward direction.
[0008] Preferably, the distance between the guide ramps at both ends corresponding to the height position of the elastic push rod is less than the diameter of the elastic push rod, and the side of the guide ramp is provided with rounded corners.
[0009] Preferably, the shock-absorbing buckle is an airbag buckle, which includes an elastic airbag and a buckle housing. The buckle housing is inserted into the connection hole and abuts against the metal pin. The elastic airbag is coaxially disposed inside the buckle housing, and the elastic airbag includes a compression end and an expansion end. The expansion end is disposed at the end of the buckle housing near the metal pin, while the compression end is disposed at the end of the buckle housing located outside the connector. Both inner ends of the metal pin are provided with guide slopes that are inclined toward the buckle housing in an axial rightward and vertical downward direction. When the compression end is compressed into the buckle housing, the expansion end expands in an axial rightward and radial direction, squeezing the guide slopes at both ends.
[0010] Preferably, a limiting groove is provided on the buckle housing on one side of the compression end, and the compression end is inserted into the limiting groove after being compressed.
[0011] Preferably, two or more sets of the connecting holes are arranged vertically and horizontally along the length of the connector, and two sets of shock-absorbing buckles are arranged vertically and horizontally along the connecting holes. The two sets of shock-absorbing buckles are respectively inserted into the two or more sets of connecting holes arranged vertically and horizontally, and the shock-absorbing buckles are engaged with the connector.
[0012] Preferably, the metal pin is connected to the wire via a crimp terminal.
[0013] Preferably, a torsion spring is provided at the connection between the elastic buckle and the connector, and the elastic force generated by the torsion spring causes the elastic buckle to engage in the limiting groove.
[0014] (III) Beneficial Effects: Compared with the prior art, the present invention provides a bipolar plate voltage inspection and anti-detachment structure, which has the following beneficial effects: 1. This bipolar plate voltage inspection and anti-detachment structure, through the combined use of the mounting groove structure and the elastic snap-fit structure, can significantly improve the connection stability of the bipolar plate in the connector mounting groove, effectively reduce the relative shaking between the bipolar plate and the connector, and thus prevent the elastic contact of the metal pin from sliding between the metal pin and the bipolar plate. This fixing method solves the problem of the existing inspection voltage acquisition structure not being firmly connected to the bipolar plate, ensuring that the elastic contact of the metal pin always maintains close contact with both ends of the metal bipolar plate, ensuring the stability of voltage signal acquisition and transmission, providing support for real-time and accurate monitoring of the voltage status of each cell in the fuel cell stack, and thus ensuring the stable operation of the fuel cell system.
[0015] 2. This bipolar plate voltage inspection anti-dislodgement structure, through the combined use of a push rod buckle structure and an elastic push rod structure, can generate downward pressure on the guide slope during the insertion of the elastic push rod between the guide slopes, so that the metal pin is elastically limited in the vertical direction. This effectively resists the longitudinal force generated by the vibration of the connector in the usage environment, avoids the shaking and friction between the elastic contact of the metal pin and the bipolar plate, and can also suppress the problem of metal pin loosening caused by the accumulation of small vibration friction over a long period of time. This ensures the stability of the contact between the metal pin and the bipolar plate and reduces fuel cell voltage detection failures caused by pin loosening.
[0016] 3. This bipolar plate voltage inspection anti-drop structure, through the combined use of a snap-fit shell structure and an elastic airbag structure, can generate compressive pressure on the guide slope of the metal pin from both axial and radial directions. Simultaneously, the expansion end compresses the metal pin to both sides, ensuring that the two sides of the metal pin are tightly pressed against the inner wall of the connection hole, thereby achieving omnidirectional limiting of the metal pin. This omnidirectional limiting structure significantly reduces the shaking problem of the metal pin within the connection hole, ensuring the stability of the contact between the metal pin and the bipolar plate. Furthermore, by adjusting the amount of gas in the elastic airbag to regulate the expansion amount of the expansion end, it can be specifically adapted to metal pins of different sizes, effectively avoiding shaking problems caused by metal pin processing errors. It provides effective anti-vibration for various types of metal pins with processing errors. This application not only solves the connection instability problem caused by component processing errors or vibration in traditional inspection methods but also improves the versatility and adaptability of the structure, reducing detection failures caused by component compatibility issues. Attached Figure Description
[0017] Figure 1 This is a three-dimensional structural diagram of the bipolar plate voltage inspection and anti-detachment structure in this invention; Figure 2 This is a front view of the bipolar plate voltage inspection and anti-detachment structure in this invention; Figure 3 This is a cross-sectional view of the bipolar plate voltage inspection and anti-detachment structure in this invention. Figure 4 This is a schematic diagram of the force distribution on the guide slope structure of the bipolar plate voltage inspection and anti-detachment structure in this invention; Figure 5 This is a cross-sectional view of the connector structure in Embodiment 2; Figure 6 This is a top view of the compression end and guide ramp structure in Embodiment 2.
[0018] In the diagram: 1. Connector; 11. Mounting slot; 12. Connecting hole; 13. Limiting slot; 14. Elastic buckle; 2. Bipolar plate; 21. Horizontal fixing slot; 22. Vertical fixing slot; 3. Metal pin; 31. Elastic contact; 32. Guide slope; 4. Wire; 5. Shock-absorbing buckle; 51. Elastic push rod; 52. Buckle housing; 53. Limiting protrusion; 6. Elastic airbag; 61. Compression end; 62. Expansion end. Detailed Implementation
[0019] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.
[0020] Example 1 Please see Figures 1-4 The bipolar plate 2 voltage inspection and anti-dislodgement structure includes a connector 1 and an elastic buckle 14. The connector 1 has two or more mounting slots 11, into which the bipolar plate 2 is inserted. The elastic buckle 14 is rotatably mounted on the connector 1 and engages the bipolar plate 2 within the mounting slot 11. The mounting slots 11 on the connector 1 adopt a U-shaped slot structure with rounded chamfers at the edges. The mounting slots 11 have a straight structure that matches the edge contour of the bipolar plate 2, facilitating smooth insertion of the bipolar plate 2 and preventing scratches on the surface of the bipolar plate 2 during assembly. The elastic buckle 14 is designed as a sheet structure, with one end rotatably connected to the connector 1 via a rotating shaft. A torsion spring is fitted on the outside of the rotating shaft, with both ends of the torsion spring abutting against the inner side of the elastic buckle 14 and the inner wall groove of the connector 1, respectively, ensuring that the elastic buckle 14 always has a preload force to rotate towards the limiting groove 13. By using the mounting slot 11 in conjunction with the elastic snap-fit 14 with a torsion spring, both quick insertion and removal of the bipolar plate 2 can be achieved, while maintaining a continuous and stable snap-fit state through pre-tightening force. The connector 1 has two or more sets of connecting holes 12 communicating with the mounting slot 11. Metal pins 3 extending from the inside of the connecting holes 12 towards the mounting slot 11 are fixedly mounted within them. One end of the metal pin 3 has an elastic contact 31 that snaps onto the bipolar plate 2, and the other end of the metal pin 3 is into which a wire 4 is inserted. The connecting holes 12 in the connector 1 adopt a stepped hole structure, with the end closer to the mounting slot 11 having a slightly smaller diameter and forming an annular limiting step to limit the assembly depth of the metal pin 3, preventing the metal pin 3 from excessively extending into the mounting slot 11 and causing excessive contact pressure with the bipolar plate 2. The metal pin 3 is made of copper alloy, with a nickel-plated surface to enhance corrosion resistance and conductivity stability. The elastic contact 31 is an elastic sheet structure integrally formed with the metal pin 3, possessing a certain elastic deformation capability. The metal pin 3 and the wire 4 are fixedly connected by a crimp terminal. The crimp terminal has a tubular structure with anti-slip teeth on the inner wall. During assembly, the core wires of the metal pin 3 and the wire 4 are simultaneously inserted into the crimp terminal. A special crimping tool is used to press the crimp terminal, causing the anti-slip teeth to embed into the core wires of the metal pin 3 and the wire 4, forming a tight and reliable mechanical and electrical connection. A shock-absorbing buckle 5 is also inserted into the connection hole 12 to hold the metal pin 3 in place.
[0021] Please see Figures 1-4The bipolar plate 2 has a horizontal fixing groove 21 and a vertical fixing groove 22. The horizontal fixing groove 21 and the vertical fixing groove 22 are respectively opened on two adjacent vertical sides of the bipolar plate 2, and the horizontal fixing groove 21 and the vertical fixing groove 22 are perpendicular to each other. The connector 1 also has a limiting groove 13. The limiting groove 13 passes through the connector 1 in a direction perpendicular to the side of the mounting groove 11, and the shape of the limiting groove 13 matches the shape of the vertical fixing groove 22. The elastic buckle 14 is engaged in the limiting groove 13. The limiting groove 13 on the connector 1 adopts a rectangular through groove structure. The depth of the groove is consistent with the depth of the vertical fixing groove 22 on the bipolar plate 2. The inner wall surface of the groove is provided with fine anti-slip texture to enhance the friction when in contact with the elastic buckle 14. The free end of the elastic buckle 14 has a raised structure that engages with the anti-slip texture of the limiting groove 13. When the elastic buckle 14 is engaged in the limiting groove 13, the raised structure and the anti-slip texture fit together, further enhancing the secure engagement. The length of the mounting groove 11 is equal to the length of the transverse fixing groove 21. The distance between the bottom edge of the mounting groove 11 and the bottom end face of the connector 1 is equal to the width of the transverse fixing groove 21. The bottom edge of the mounting groove 11 engages within the transverse fixing groove 21. The length of the mounting groove 11 is consistent with the length of the transverse fixing groove 21, and the distance between the bottom edge of the mounting groove 11 and the bottom end face of the connector 1 precisely matches the width of the transverse fixing groove 21, ensuring that the bottom edge of the mounting groove 11 can be fully engaged within the transverse fixing groove 21, forming a tight and secure engagement.
[0022] Please see Figures 1-4The shock-absorbing buckle 5 is a push rod buckle. An elastic push rod 51 is located near the metal pin 3 at one end of the push rod buckle. The elastic push rod 51 is made of high-elasticity stainless steel and has a cylindrical structure. Its surface is polished to reduce assembly friction, and the axis of the elastic push rod 51 is parallel to the axis of the connecting hole 12 to ensure accurate insertion. Both ends of the inner side of the metal pin 3 have guide slopes 32 perpendicular to the axis of the elastic push rod 51. The guide slopes 32 at both ends gradually converge and tighten in the vertically downward direction. The elastic push rod 51 is engaged between the guide slopes 32 at both ends. The guide slopes 32 are formed by precision milling, and their inclination angle is designed to guide the elastic push rod 51 to insert smoothly and simultaneously generate a vertically downward force. The gradually converging shape of the guide slopes 32 at both ends forms a wedge-shaped space that fits the elastic push rod 51. Because traditional metal pins 3 are often rigidly contacted within the connection hole 12, they are prone to loosening due to gaps caused by vibration. However, the elastic push rod 51, in conjunction with the wedge-shaped guide slope 32, can adapt to the spatial constraints of the guide slope 32 through deformation, and utilize the slope's inclination to generate continuous vertical downward pressure on the metal pin 3, achieving elastic limiting. This elastic limiting effectively counteracts the upward force on the metal pin 3 when the connector 1 shakes, preventing vertical displacement of the metal pin 3 and ensuring contact between the elastic contact 31 of the metal pin 3 and the bipolar plate 2. During the insertion of the elastic push rod 51 between the guide slopes 32 at both ends, the push rod exerts downward pressure on the guide slopes 32 at both ends in a vertically downward direction, such as... Figure 4 As shown. The distance between the guide ramps 32 at both ends of the height position of the elastic push rod 51 is less than the diameter of the elastic push rod 51. The distance between the guide ramps 32 at both ends of the height position of the elastic push rod 51 is designed to be slightly smaller than the diameter of the elastic push rod 51, forming a slight interference fit. If the distance between the guide ramps 32 is greater than the diameter of the elastic push rod 51, there will be a gap between the elastic push rod 51 and the ramp, which will not generate effective limiting pressure. The interference fit allows the elastic push rod 51 to undergo slight elastic deformation when inserted, ensuring a tight fit with the ramp, thereby transmitting stable downward pressure. The guide ramps 32 have rounded corners on their sides, which can reduce the insertion resistance during assembly. Please see Figures 1-4Two or more sets of connecting holes 12 are arranged vertically and horizontally along the length of connector 1, and two sets of shock-absorbing buckles 5 are arranged vertically and horizontally along the connecting holes 12. That is, adjacent connecting holes 12 are staggered in the vertical direction, and the central axis of the upper row of connecting holes 12 does not overlap with the central axis of the lower row of connecting holes 12 in the horizontal direction, forming a staggered hole distribution. The two sets of shock-absorbing buckles 5 are respectively inserted into the two or more sets of connecting holes 12 arranged vertically and horizontally, and the shock-absorbing buckles 5 and connector 1 are engaged with each other. The metal pin 3 and the wire 4 are connected by a crimp terminal. A torsion spring is provided at the connection between the elastic buckle 14 and connector 1. The elastic force generated by the torsion spring causes the elastic buckle 14 to engage in the limiting groove 13. The torsion spring is made of high-strength piano wire. The inner diameter of the spring is adapted to the outer diameter of the rotating shaft of the elastic buckle 14. One end of the spring is embedded in the spring positioning groove on the connector 1, and the other end abuts against the spring support protrusion on the inner side of the elastic buckle 14. In its natural state, the torsion spring applies a preload force to the elastic buckle 14 to rotate in the direction of the limiting groove 13.
[0023] Please see Figures 1-4 In use, the bipolar plate 2 is placed in the mounting groove 11 of the connector 1, and its vertical fixing groove 22 matches and corresponds to the limiting groove 13 on the connector 1. At the same time, the mounting groove 11 cooperates with the horizontal fixing groove 21 of the bipolar plate 2. Then, by rotating the elastic buckle 14 installed on the connector 1, the vertical fixing groove 22 is limited in the limiting groove 13, so as to achieve a stable fixation of the bipolar plate 2 in the mounting groove 11. Meanwhile, the metal pin 3 fixedly assembled in the connecting hole 12 of the connector 1 that communicates with the mounting groove 11 is connected through the elastic contact at one end. The metal pin 31 is in close contact with both ends of the metal bipolar plate 2, while the wire 4 connected to the other end of the metal pin 3 is responsible for transmitting the collected voltage signal. This dual-cooperation fixing method of mounting groove 11 and horizontal fixing groove 21, elastic buckle 14 and limiting groove 13 and vertical fixing groove 22 greatly improves the connection stability of the bipolar plate 2 in the mounting groove 11, effectively reduces the shaking between the bipolar plate 2 and the connector 1, and thus avoids the slippage between the elastic contact 31 and the bipolar plate 2, ensuring the stability of voltage detection.
[0024] Please see Figures 1-4When the shock-absorbing buckle 5 is designed as a push rod buckle, the metal pin 3 is first assembled into the connecting hole 12, and then the push rod buckle is installed. During the axial insertion of the push rod buckle into the connecting hole 12, the elastic push rod 51 near the metal pin 3 will axially insert between the guide slopes 32 at both ends of the inner side of the metal pin 3. Since the guide slopes 32 are inclined vertically and gradually tighten downwards, and the distance between the guide slopes 32 at the height of the elastic push rod 51 is less than the diameter of the elastic push rod 51, the elastic push rod 51... When inserted, the guide ramps 32 on both sides are squeezed, forcing the metal pin 3 to move downward as a whole so that the space between the guide ramps 32 at both ends can accommodate the elastic push rod 51. This causes the elastic push rod 51 to exert downward pressure on the guide ramps 32 at both ends, so that the metal pin 3 is elastically limited in the vertical direction. When the connector 1 shakes, this elastic limitation can effectively prevent the elastic contact 31 from shaking and rubbing against the bipolar plate 2. It can not only resist longitudinal vibration, but also suppress the loosening of the metal pin 3 caused by the accumulation of small vibration friction over a long period of time.
[0025] Example 2 Please see Figures 1-6 The shock-absorbing buckle 5 is an airbag buckle, which includes an elastic airbag 6 and a buckle housing 52. The buckle housing 52 is inserted into the connection hole 12 and abuts against the metal pin 3. The elastic airbag 6 is coaxially arranged inside the buckle housing 52, and the elastic airbag 6 includes a compression end 61 and an expansion end 62. The elastic airbag 6 is made of nitrile rubber and has a cylindrical structure. The wall thickness of the compression end 61 is slightly greater than the wall thickness of the expansion end 62. The outer circumferential surface of the elastic airbag 6 is tightly fitted with the inner circumferential surface of the buckle housing 52. An expansion end 62 is provided at the end of the snap-fit housing 52 near the metal pin 3, while a compression end 61 is provided at the end of the snap-fit housing 52 located outside the connector 1. Both inner ends of the metal pin 3 are provided with guide slopes 32 that slope towards the snap-fit housing 52 axially to the right and vertically downward. When the compression end 61 is compressed into the snap-fit housing 52, the expansion end 62 expands axially to the right and radially, compressing the guide slopes 32 at both ends. The forces in both directions are balanced, preventing the metal pin 3 from tilting due to uneven force. The edges of the guide slopes 32 are also rounded. A limiting groove 53 is provided on the snap-fit housing 52 on one side of the compression end 61. After being compressed, the compression end 61 is engaged in the limiting groove 53.
[0026] Please see Figures 1-6When designing the shock-absorbing buckle 5 as an airbag buckle, first push the buckle housing 52 axially into the connecting hole 12 and install it in the connecting hole 12, so that the side of it close to the metal pin 3 is close to the side of the metal pin 3. Then press the compression end 61 of the elastic airbag 6, so that the compression end 61 is pressed into the buckle housing 52 and engaged in the limiting protrusion 53. After the compression end 61 is compressed, it will cause the expansion end 62 to expand axially to the right and radially, thereby causing the expansion end 62 to squeeze the guide slopes 32 at both ends from both axial and radial directions. Since the guide slopes 32 are inclined to the axial right and vertical downward directions, they will push the metal pin 3 to move axially to the right and vertically downward directions to ensure that the elastic airbag 6 can be accommodated between the guide slopes 32 at both ends. The expansion end 62 allows the elastic airbag 6 to exert axial pressure to the right and vertical downward on the guide slopes 32 at both ends, effectively limiting the metal pin 3 and preventing it from shaking in the connection hole 12. At the same time, the expansion of the expansion end 62 will also squeeze the entire metal pin 3 to both sides, making the two sides of the metal pin 3 tightly adhere to the inner wall of the connection hole 12 to further ensure stability. The expansion end 62 of the elastic airbag 6 can limit the metal pin 3 in all directions, greatly reducing the risk of shaking. Moreover, the final expansion amount of the expansion end 62 can be adjusted by changing the amount of gas in the elastic airbag 6, thereby specifically adapting to metal pins 3 of different sizes and avoiding shaking problems caused by the processing error of the metal pin 3. It can play an effective anti-vibration role for various types of metal pins 3 with processing errors.
[0027] Please see Figures 1-6 When the metal pin 3 vibrates significantly relative to the connecting hole 12, and the pressure generated exceeds the bearing capacity of the expansion end 62 of the elastic airbag 6, the guide slopes 32 on both sides of the metal pin 3 will squeeze the expansion end 62, forcing the expansion end 62 to contract. The contraction of the expansion end 62 will cause the compression end 61 on the other side of the elastic airbag 6 to expand, thereby causing the compression end 61 to disengage from the limiting protrusion 53 on the buckle housing 52. This provides a visual reminder and facilitates timely detection of abnormal vibration of the metal pin 3.
[0028] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.
[0029] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.
Claims
1. Bipolar plate (2) voltage patrol anti-falling structure, comprising a connector (1) and an elastic buckle (14), the connector (1) is provided with two groups and more mounting grooves (11), the bipolar plate (2) is inserted into the mounting groove (11), the elastic buckle (14) is rotatably installed on the connector (1) and the bipolar plate (2) is clamped in the mounting groove (11), characterized in that: The connector (1) is provided with two or more groups of connecting holes (12) communicated with the mounting groove (11), a metal pin (3) extending from the inside to the mounting groove (11) direction is fixedly assembled in the connecting hole (12), one end of the metal pin (3) is provided with an elastic contact (31) clamped on the bipolar plate (2), the other end of the metal pin (3) is inserted with a wire (4), and a damping buckle (5) clamping the metal pin (3) in the connecting hole (12) is also inserted in the connecting hole (12).
2. Bipolar plate (2) voltage patrol anti-falling structure according to claim 1, characterized in that: The bipolar plate (2) is provided with a horizontal fixing groove (21) and a vertical fixing groove (22), the horizontal fixing groove (21) and the vertical fixing groove (22) are respectively arranged on two adjacent vertical edges of the bipolar plate (2), the horizontal fixing groove (21) and the vertical fixing groove (22) are perpendicular to each other, a limiting groove (13) is also arranged on the connector (1), the limiting groove (13) penetrates the connector (1) in a direction perpendicular to the side surface of the mounting groove (11), the limiting groove (13) is matched with the vertical fixing groove (22) in shape, the elastic buckle (14) is clamped in the limiting groove (13), the length of the mounting groove (11) is equal to the length of the horizontal fixing groove (21), the distance between the bottom edge of the mounting groove (11) and the bottom end surface of the connector (1) is equal to the width of the horizontal fixing groove (21), and the bottom edge of the mounting groove (11) is clamped in the horizontal fixing groove (21).
3. Bipolar plate (2) voltage patrol anti-falling structure according to claim 1, characterized in that: The damping buckle (5) is a push rod buckle, the push rod buckle is provided with an elastic push rod (51) close to one end of the metal pin (3), both end surfaces of the metal pin (3) are provided with a guide inclined surface (32) perpendicular to the axial direction of the elastic push rod (51), the guide inclined surfaces (32) at both ends gradually approach each other in the vertical downward direction, and the elastic push rod (51) is clamped between the guide inclined surfaces (32) at both ends; during the insertion of the elastic push rod (51) between the guide inclined surfaces (32) at both ends, the push rod generates a downward pressure on the guide inclined surfaces (32) at both ends in the vertical downward direction.
4. Bipolar plate (2) voltage patrol anti-falling structure according to claim 3, characterized in that: The distance between the guide inclined surfaces (32) at both ends corresponding to the height position of the elastic push rod (51) is less than the diameter of the elastic push rod (51), and the side surface of the guide inclined surface (32) is provided with a rounded corner.
5. Bipolar plate (2) voltage patrol anti-falling structure according to claim 1, characterized in that: The shock-absorbing buckle (5) is an air bag buckle, which comprises an elastic air bag (6) and a buckle shell (52), the buckle shell (52) is inserted into the connecting hole (12) and abuts on the metal pin (3), the elastic air bag (6) is coaxially arranged inside the buckle shell (52), and the elastic air bag (6) comprises a compression end (61) and an expansion end (62), the expansion end (62) is arranged at one end of the buckle shell (52) close to the metal pin (3), and the compression end (61) is arranged at one end of the buckle shell (52) outside the connector (1), the metal pin (3) is provided with a guide inclined surface (32) inclined towards the right and vertically downwards on the inner side of both ends; when the compression end (61) is compressed into the buckle shell (52), the expansion end (62) expands axially to the right and radially to press the guide inclined surface (32) at both ends.
6. Bipolar plate (2) voltage patrol anti-falling structure according to claim 5, characterized in that: The buckle shell (52) on one side of the compression end (61) is provided with a limiting convex groove (53), and the compression end (61) is clamped into the limiting convex groove (53) after being compressed.
7. Bipolar plate (2) voltage patrol anti-falling structure according to claim 1, characterized in that: Two or more groups of the connecting holes (12) are arranged in an up-down cross manner along the length direction of the connector (1), and two groups of the shock-absorbing buckles (5) are arranged in an up-down vertical manner along the connecting holes (12), two groups of the shock-absorbing buckles (5) are respectively inserted into the two groups of the connecting holes (12) arranged in an up-down cross manner, and the shock-absorbing buckles (5) and the connector (1) are mutually clamped.
8. Bipolar plate (2) voltage patrol anti-falling structure according to claim 1, characterized in that: The metal pin (3) and the wire (4) are connected through a crimping terminal.
9. Bipolar plate (2) voltage patrol anti-falling structure according to claim 2, characterized in that: A torsion spring is arranged at the connection between the elastic buckle (14) and the connector (1), and the elastic force generated by the torsion spring enables the elastic buckle (14) to be clamped in the limiting groove (13).