Voltage inspection module of fuel cell and voltage inspection system of fuel cell

Abstract

The utility model discloses a voltage inspection module of a fuel cell and a voltage inspection system of the fuel cell, and relates to the technical field of cell inspection, and the voltage inspection module of the fuel cell comprises a voltage inspection plate and a plurality of elastic probes, a plurality of mounting holes arranged at intervals and a plurality of transmission interfaces electrically connected with the mounting holes are formed in the voltage inspection plate, and the voltage inspection plate extends in the transverse direction; the elastic probes are inserted into the mounting holes and electrically connected with the mounting holes, each elastic probe extends from the voltage inspection plate to the pole piece and is bent to form a bent part with an upward opening, the bent parts extend into the mounting grooves, the bottoms of the bent parts abut against the bottom walls of the mounting grooves, and the elastic probes are in a compressed state during abutting. According to the voltage inspection device, the elastic probe is matched with the mounting groove, and the bending part is always propped against the mounting groove through the elastic restoring force of the elastic probe, so that the elastic probe is prevented from being separated from the pole piece, and the accuracy of judging the running state of the fuel cell by the voltage inspection device is improved.

Description

Technical Field

[0001] This utility model relates to the field of battery inspection technology, and in particular to a voltage inspection module and a voltage inspection system for fuel cells. Background Technology

[0002] A fuel cell stack consists of multiple individual cells stacked sequentially. The voltage of each individual cell is susceptible to fluctuations due to changes in the operating environment and conditions. To ensure the stable operation of the fuel cell system, it is necessary to monitor the voltage of each individual cell in real time and transmit the collected voltage signals to the fuel cell controller. This allows for accurate assessment of the cell's operating status and the development of appropriate response strategies. Currently, voltage monitoring devices are typically connected to the fuel cell stack to achieve precise acquisition and transmission of the voltage of each individual cell within the stack.

[0003] In existing voltage monitoring devices, the probes are usually directly inserted into the electrode plates vertically. However, during vehicle operation, bumps can cause the probes to vibrate, and the probes may momentarily detach from the electrode plates, losing contact and resulting in the loss of collected electrical signals. This causes the voltage monitoring device to frequently issue error warnings, affecting the judgment of the fuel cell's operating status. Utility Model Content

[0004] The main purpose of this invention is to propose a voltage monitoring module and a voltage monitoring system for fuel cells, aiming to solve the problem in the prior art that the probe is easily detached from the electrode when the vehicle is bumpy, which affects the judgment of the operating status of the fuel cell.

[0005] To achieve the above objectives, this utility model proposes a voltage monitoring module for a fuel cell, used to detect the voltage of the electrode of the fuel cell. The electrode extends vertically and has a mounting groove on its top. The voltage monitoring module for the fuel cell includes:

[0006] A voltage monitoring board, wherein the voltage monitoring board has a plurality of spaced mounting holes and a plurality of transmission interfaces electrically connected to the mounting holes, and the voltage monitoring board extends laterally;

[0007] Multiple elastic probes are inserted into the mounting holes and electrically connected to the mounting holes. Each elastic probe extends from the voltage monitoring plate to the electrode and is bent to form an upward-opening bend. The bend extends into the mounting groove and the bottom of the bend abuts against the bottom wall of the mounting groove. When abutting, the elastic probe is in a compressed state.

[0008] In one embodiment, the elastic probe includes a connecting section, an elastic section, and an abutting section. The connecting section is connected to the mounting hole, and the abutting section extends into the mounting groove and abuts against the bottom wall of the mounting groove. The elastic section is connected between the connecting section and the abutting section. The abutting section is bent upward to form the bent portion. The connecting section is used to push the bent section toward the mounting groove by its elastic restoring force when compressed.

[0009] In one embodiment, the elastic segment is bent toward the mounting groove to form an elastic portion.

[0010] In one embodiment, the bottom of the mounting groove is arc-shaped, and the bent section is arc-shaped and fits against the bottom of the mounting groove.

[0011] In one embodiment, the connecting segment, the elastic segment, and the abutting segment are integrally formed from an elastic material.

[0012] In one embodiment, the fuel cell includes a plurality of electrode plates arranged at intervals, the number of mounting holes being consistent with the number of electrode plates and arranged in a one-to-one correspondence, and the number of elastic probes being less than or equal to the number of mounting holes.

[0013] In one embodiment, each of the transmission interfaces is provided with a connector, the end of the connector away from the transmission interface being used to connect to an external device via a cable.

[0014] In one embodiment, the voltage monitoring module of the fuel cell further includes a fixing plate, which is connected to the voltage monitoring plate and used to connect to external devices. The fixing plate has clearance holes at each of the transmission interfaces, and the connector passes through the corresponding clearance holes to connect to the transmission interface.

[0015] In one embodiment, the voltage inspection board has a first screw hole, and the fixing plate has a second screw hole. The voltage inspection board and the fixing plate are connected by a screw passing through the first screw hole and the second screw hole.

[0016] This utility model also proposes a voltage monitoring system for a fuel cell, which includes multiple voltage monitoring modules of the aforementioned fuel cell, arranged sequentially along the extension direction of the electrode.

[0017] The technical solution of this utility model involves setting the probe as an elastic probe, then bending the elastic probe to form a bent portion. The bent portion extends into the mounting groove, and the mounting groove horizontally limits the elastic probe, preventing it from detaching from the electrode. Simultaneously, the bent portion abuts against the bottom wall of the mounting groove, and the elastic probe is in a compressed state. This ensures that even if the electrode moves away from the elastic probe due to bumps during vehicle operation, the elastic restoring force of the elastic probe will push the bent portion towards the mounting groove, keeping it in constant contact. This guarantees that the probe will not momentarily detach from the electrode during vehicle operation, thus preventing the voltage monitoring device from issuing error warnings and improving the accuracy of judging the fuel cell's operating status. This utility model, through the cooperation of the elastic probe and the mounting groove, and the elastic restoring force of the elastic probe ensuring that the bent portion remains firmly against the mounting groove, prevents the elastic probe from detaching from the electrode and improves the accuracy of the voltage monitoring device in judging the fuel cell's operating status. Attached Figure Description

[0018] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on the structures shown in these drawings without creative effort.

[0019] Figure 1 This is a schematic diagram of the assembly of a voltage monitoring module and electrode plates for a fuel cell according to an embodiment of the present invention.

[0020] Figure 2 A cross-sectional structural diagram of a voltage monitoring module and electrode sheets for a fuel cell provided in an embodiment of this utility model;

[0021] Figure 3 This is a schematic diagram of the structure of a voltage monitoring module for a fuel cell provided in one embodiment of the present invention.

[0022] Explanation of icon numbers:

[0023] 100. Voltage monitoring module for fuel cell; 1. Voltage monitoring board; 11. Mounting hole; 12. Transmission interface; 13. Connector; 14. First screw hole; 2. Elastic probe; 21. Connecting section; 22. Elastic section; 221. Elastic part; 23. Abutting section; 231. Bending part; 3. Fixing plate; 31. Clearance hole; 32. Second screw hole; 33. Screw; 4. Electrode; 41. Mounting groove.

[0024] The realization of the purpose, functional features and advantages of this utility model will be further explained in conjunction with the embodiments and with reference to the accompanying drawings. Detailed Implementation

[0025] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only one partial embodiment of the present utility model, and not the entire embodiment. Based on the embodiments of the present utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of the present utility model.

[0026] It should be noted that if the embodiments of this utility model involve directional indicators (such as up, down, left, right, front, back, etc.), the directional indicators are only used to explain the relative positional relationship and movement of each shell in a certain specific posture. If the specific posture changes, the directional indicators will also change accordingly.

[0027] Furthermore, if the embodiments of this utility model involve descriptions such as "first" or "second," these descriptions are for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined with "first" or "second" may explicitly or implicitly include at least one of those features. Additionally, the use of "and / or" or "and / or" throughout the text includes three parallel solutions. For example, "A and / or B" includes solution A, solution B, or a solution where both A and B are satisfied simultaneously. Furthermore, the technical solutions of the various embodiments can be combined with each other, but this must be based on the ability of those skilled in the art to implement them. When the combination of technical solutions is contradictory or impossible to implement, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection claimed by this utility model.

[0028] In existing voltage monitoring devices, the probes are usually directly inserted into the electrode plates vertically. However, during vehicle operation, bumps can cause the probes to vibrate, and the probes may momentarily detach from the electrode plates, losing contact and resulting in the loss of collected electrical signals. This causes the voltage monitoring device to frequently issue error warnings, affecting the judgment of the fuel cell's operating status.

[0029] To address the aforementioned issues, this invention proposes a voltage monitoring module 100 for a fuel cell.

[0030] Please combine Figures 1 to 3The voltage monitoring module 100 of the fuel cell in this embodiment is used to detect the voltage of the electrode 4 of the fuel cell. The electrode 4 extends vertically and has a mounting groove 41 on its top. The voltage monitoring module 100 of the fuel cell includes a voltage monitoring plate 1 and a plurality of elastic probes 2. The voltage monitoring plate 1 has a plurality of spaced mounting holes 11 and a plurality of transmission interfaces 12 electrically connected to the mounting holes 11. The voltage monitoring plate 1 extends horizontally. The elastic probes 2 are inserted into the mounting holes 11 and electrically connected to the mounting holes 11. Each elastic probe 2 extends from the voltage monitoring plate 1 to the electrode 4 and is bent to form an upward-opening bend 231. The bend 231 extends into the mounting groove 41 and the bottom of the bend 231 abuts against the bottom wall of the mounting groove 41. When abutting, the elastic probe 2 is in a compressed state.

[0031] The technical solution of this utility model involves setting the probe as an elastic probe 2, and then bending the elastic probe 2 to form a bent portion 231. The bent portion 231 extends into the mounting groove 41, which limits the elastic probe 2 in the horizontal direction to prevent the elastic probe 2 from detaching from the electrode 4. At the same time, the bent portion 231 abuts against the bottom wall of the mounting groove 41, and the elastic probe 2 is in a compressed state. This ensures that even if the electrode 4 moves away from the elastic probe 2 due to bumps during vehicle operation, the elastic restoring force of the elastic probe 2 will push the bent portion 231 towards the mounting groove 41, so that the bent portion 231 always abuts against the mounting groove 41. This ensures that the probe will not momentarily detach from the electrode 4 during vehicle operation, thereby preventing the voltage monitoring device from issuing error warnings and improving the accuracy of judging the operating status of the fuel cell. This invention utilizes the cooperation between the elastic probe 2 and the mounting groove 41. The elastic restoring force of the elastic probe 2 ensures that the bent part 231 is always pressed against the mounting groove 41, preventing the elastic probe 2 from detaching from the electrode 4 and improving the accuracy of the voltage monitoring device in judging the operating status of the fuel cell.

[0032] In one embodiment, the elastic probe 2 includes a connecting section 21, an elastic section 22, and an abutting section 23. The connecting section 21 is connected to the mounting hole 11, and the abutting section 23 extends into the mounting groove 41 and abuts against the bottom wall of the mounting groove 41. The elastic section 22 is connected between the connecting section 21 and the abutting section 23. The abutting section 23 is bent upward to form a bent portion 231. The connecting section 21 is used to push the bent section toward the mounting groove 41 by its elastic restoring force when compressed.

[0033] The segmented design of the elastic probe 2 clearly defines the function of each segment, allowing for flexible adjustment of the length, stiffness, and bending angle of each segment based on the structural characteristics, installation space, and contact requirements of different fuel cell stacks. This not only enhances the adaptability and design flexibility of the voltage monitoring module but also optimizes the contact force and elastic characteristics of the probe for specific applications, further improving the accuracy and reliability of signal acquisition and meeting the monitoring needs of different types of fuel cell systems.

[0034] In one embodiment, the elastic segment 22 is bent toward the mounting groove 41 to form the elastic portion 221. The elastic portion 221 is bent toward the mounting groove 41, meaning its opening faces downwards. This downward-facing design of the elastic portion 221 effectively enhances the contact stability between the contact segment 23 and the bottom wall of the mounting groove 41 by utilizing the natural downward pressure of the elastic probe 2 during its recovery. Simultaneously, the downward-facing design of the elastic portion 221 ensures that, under long-term pressure and vibration, the elastic probe 2's own weight and elastic thrust work together on the contact portion, preventing a decrease in contact force due to material fatigue or deformation. Compared to an upward-facing structure, a downward-facing structure more effectively delays elastic decay and maintains stable contact pressure, thereby improving the reliability and durability of the voltage monitoring module throughout the fuel cell system's lifecycle, reducing maintenance frequency, and enhancing overall system operating efficiency.

[0035] In one embodiment, the bottom of the mounting groove 41 is arc-shaped, and the bent section is arc-shaped and fits against the bottom of the mounting groove 41.

[0036] By designing the bottom of the mounting groove 41 as an arc shape and making the bent section of the elastic probe 2 also arc-shaped, a larger contact area between the bent section and the bottom of the groove can be achieved. Compared with point contact or line contact, surface contact can effectively disperse local stress, reduce the risk of wear and fatigue of the probe and electrode 4 due to prolonged local stress, and extend the service life of the component. At the same time, the continuous arc-shaped contact structure can improve the contact stability of the probe, maintain a stable electrical connection even in vibration environments, and further improve the durability and reliability of the voltage monitoring module.

[0037] In one embodiment, the connecting segment 21, the elastic segment 22, and the abutting segment 23 are integrally formed from an elastic material.

[0038] By integrally molding the connecting section 21, elastic section 22, and abutment section 23 from elastic material, the assembly process of multi-segment components is eliminated, simplifying the manufacturing process and reducing production costs. Simultaneously, the integrated structure avoids loosening and breakage at multi-segment connections due to long-term stress and vibration, improving overall mechanical strength and electrical connection stability. Because the entire probe possesses continuous elastic properties, it also achieves a more uniform and durable reset force, further enhancing the reliability and durability of the voltage monitoring module under complex fuel cell operating conditions.

[0039] In one embodiment, the fuel cell includes a plurality of electrode plates 4 arranged at intervals, the number of mounting holes 11 is the same as the number of electrode plates 4 and is set in a one-to-one correspondence, and the number of elastic probes 2 is less than or equal to the number of mounting holes 11.

[0040] In practical applications, not every electrode 4 needs to be equipped with a flexible probe 2. The electrode 4 to be tested can be selected according to requirements, allowing for flexible adjustment of the voltage monitoring module design and avoiding unnecessary resource waste and cost increases. Furthermore, this customizable configuration makes the system more adaptable to fuel cells of different specifications or functions, providing greater design freedom and application flexibility. At the same time, reducing the number of unnecessary probes improves the operational stability of the voltage monitoring module and optimizes the sensor layout, enabling more accurate detection of the voltage state of key battery cells.

[0041] In one embodiment, each transmission interface 12 is provided with a connector 13, the end of the connector 13 furthest from the transmission interface 12 being used to connect to an external device via a cable. The external device can connect to the fuel cell voltage monitoring module through a standard interface, improving the overall system's flexibility and maintainability. Furthermore, the use of cable connections avoids complex wireless communication, reduces the risk of system failure, and ensures the stability and reliability of data transmission.

[0042] In one embodiment, the voltage monitoring module 100 of the fuel cell further includes a fixing plate 3, which is connected to the voltage monitoring plate 1 and is used to connect to external devices. The fixing plate 3 has clearance holes 31 at each transmission interface 12, and the connector 13 passes through the corresponding clearance holes 31 to connect to the transmission interface 12.

[0043] The clearance hole 31 serves a positioning function, ensuring precise mating between the connector 13 and the transmission interface 12. Simultaneously, the contact between the clearance hole 31 and the connector 13 effectively prevents interference and damage to the connector 13 and the transmission interface 12 caused by external vibrations or bumps. The mounting plate 3 provides a robust support structure, ensuring stable installation of the voltage monitoring board 1 and reliable connection to external equipment, thus improving the mechanical strength and electrical connection stability of the entire system.

[0044] In one embodiment, a first screw hole 14 is provided on the voltage monitoring plate 1, and a second screw hole 32 is provided on the fixing plate 3. A screw 33 passing through the first screw hole 14 and the second screw hole 32 connects the voltage monitoring plate 1 and the fixing plate 3. By providing screw holes on both the voltage monitoring plate 1 and the fixing plate 3, and connecting them with a screw 33, a secure connection between the voltage monitoring plate 1 and the fixing plate 3 is ensured. The screw 33 connection method provides a stable mechanical fixing force, effectively avoiding the influence of external factors such as vibration and impact on the module connection, and improving the stability and reliability of the overall structure.

[0045] This utility model also proposes a voltage monitoring system for a fuel cell, which includes multiple voltage monitoring modules 100 as described above, arranged sequentially along the extension direction of the electrode 4. The specific structure of the voltage monitoring module 100 is as described in the above embodiments. Since this electronic device adopts all the technical solutions of all the above embodiments, it possesses at least all the beneficial effects brought about by the technical solutions of the above embodiments, which will not be elaborated further here.

[0046] The above are merely optional embodiments of this utility model and do not limit the patent scope of this utility model. Any equivalent structural transformations made under the concept of this utility model using the contents of this utility model specification and drawings, or direct / indirect applications in other related technical fields, are included within the patent protection scope of this utility model.

Claims

1. A voltage monitoring module for a fuel cell, characterized in that, The voltage monitoring module for the fuel cell is used to detect the voltage of the electrode plates, which extend vertically and have mounting slots at their top. A voltage monitoring board, wherein the voltage monitoring board has a plurality of spaced mounting holes and a plurality of transmission interfaces electrically connected to the mounting holes, and the voltage monitoring board extends laterally; Multiple elastic probes are inserted into the mounting holes and electrically connected to the mounting holes. Each elastic probe extends from the voltage monitoring plate to the electrode and is bent to form an upward-opening bend. The bend extends into the mounting groove and the bottom of the bend abuts against the bottom wall of the mounting groove. When abutting, the elastic probe is in a compressed state.

2. The voltage monitoring module for a fuel cell as described in claim 1, characterized in that, The elastic probe includes a connecting section, an elastic section, and an abutting section. The connecting section is connected to the mounting hole, and the abutting section extends into the mounting groove and abuts against the bottom wall of the mounting groove. The elastic section is connected between the connecting section and the abutting section. The abutting section is bent upward to form the bent portion. The connecting section is used to push the bent section toward the mounting groove by its elastic restoring force when compressed.

3. The voltage monitoring module for a fuel cell as described in claim 2, characterized in that, The elastic segment bends toward the mounting groove to form an elastic part.

4. The voltage health monitoring module for a fuel cell as recited in claim 2, wherein, The bottom of the mounting groove is arc-shaped, and the bent section is arc-shaped and fits against the bottom of the mounting groove.

5. The voltage patrol module for a fuel cell as recited in claim 2, wherein, The connecting section, elastic section, and abutment section are integrally formed using elastic material.

6. The voltage monitoring module for a fuel cell as described in any one of claims 1 to 5, characterized in that, The fuel cell includes multiple electrode plates arranged at intervals. The number of mounting holes is the same as the number of electrode plates and is set in a one-to-one correspondence. The number of elastic probes is less than or equal to the number of mounting holes.

7. The voltage patrol module for a fuel cell as claimed in any one of claims 1 to 5, wherein Each of the aforementioned transmission interfaces is provided with a connector, and the end of the connector away from the transmission interface is used to connect to an external device via a cable.

8. The voltage patrol module for a fuel cell as recited in claim 7, wherein, The voltage monitoring module of the fuel cell also includes a fixing plate, which is connected to the voltage monitoring plate and is used to connect to external devices. The fixing plate has clearance holes at each of the transmission interfaces, and the connector passes through the corresponding clearance holes to connect to the transmission interface.

9. The voltage health monitoring module for a fuel cell as recited in claim 8, wherein, The voltage inspection board has a first screw hole, and the fixing plate has a second screw hole. The voltage inspection board and the fixing plate are connected by a screw that passes through the first screw hole and the second screw hole.

10. A voltage monitoring system for a fuel cell, characterized in that, The voltage monitoring system of the fuel cell includes a plurality of voltage monitoring modules for the fuel cell as described in any one of claims 1 to 9, wherein the plurality of voltage monitoring modules for the fuel cell are arranged sequentially along the extension direction of the electrode.

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