Voltage detection component

Abstract

The utility model relates to a voltage detection component which is used for detecting the voltage of a fuel cell, the fuel cell comprises a pole plate, the pole plate is provided with a plugging hole, the plugging hole is provided with an opening, the voltage detection component comprises a base, a plugging piece and a sealing piece, the plugging piece is installed on the base, the plugging piece comprises a plugging part and an electric connection part, and the plugging part is connected with the electric connection part. The plug-in part is used for extending into the plug-in hole to be electrically connected with the polar plate, and the electric connection part is used for being electrically connected with the detection unit. And the sealing element is connected to the plug connector and is used for blocking the opening when the plug part extends into the plug hole. When the voltage of the fuel cell needs to be detected, the plugging part can extend into the plugging hole of the polar plate, so that the sealing element can plug the opening of the plugging hole, the connecting position of the plugging part and the plugging hole is sealed by the sealing element and is not exposed any more, and the possibility that the connecting position of the plugging part and the plugging hole is exposed and is in contact with water vapor is avoided; therefore, the risk of corrosion of the polar plate is reduced, and the accuracy of fuel cell voltage detection is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of fuel cell voltage detection, in particular to a voltage detection component. Background Art

[0002] In order to ensure the reliability of the fuel cell chip, it is necessary to perform voltage detection. In order to perform voltage detection, a voltage detection component is generally connected to the metal plate of the fuel cell. The voltage detection component has a connector for connecting the metal plate. The metal plate can be connected to an external detection unit through the connector of the voltage detection component to achieve voltage detection of the fuel cell. However, at present, the connector and the metal plate are connected by overlapping, resulting in the contact position of the connector and the metal plate being directly exposed to water vapor. Therefore, after the connector and the metal plate are electrically conductive, it is easy to cause corrosion at the interface of the metal plate, thereby reducing the accuracy of the fuel cell voltage detection result. Utility Model Content

[0003] The present application provides a voltage detection component for solving the problem that the contact position between the connector and the metal plate is directly exposed to water vapor due to the overlapping connection between the connector and the metal plate, which can easily cause corrosion at the metal plate interface and reduce the accuracy of the fuel cell voltage detection result.

[0004] The present application provides a voltage detection component for detecting the voltage of a fuel cell, wherein the fuel cell includes a plate, the plate has a plug hole, the plug hole has an opening, the voltage detection component includes a base, a plug connector and a sealing component, the plug connector is installed on the base, the plug connector includes a plug part and an electrical connection part, the plug part is connected to the electrical connection part, the plug part is used to extend into the plug hole to be electrically connected to the plate, and the electrical connection part is used to be electrically connected to a detection unit. The sealing component is connected to the plug connector, and the sealing component is used to block the opening when the plug part extends into the plug hole.

[0005] In this scheme, when the fuel cell needs to detect the voltage, the plug-in part can be inserted into the plug-in hole of the plate by moving the voltage detection component, so that the plug-in part is electrically connected to the plate, and at the same time, the electrical connection part of the plug-in part is electrically connected to the detection unit for detecting the voltage, so that the detection unit can detect the voltage of the plate through the plug-in part. At the same time, the sealing member connected to the plug-in part can block the opening of the plug-in hole, so that the connection position of the plug-in part and the plug-in hole is sealed by the sealing member, so that it is no longer exposed, avoiding the possibility that the connection position of the plug-in part and the plug-in hole is exposed and in contact with water vapor, thereby reducing the risk of corrosion of the plate, which is conducive to improving the accuracy of detecting the voltage of the fuel cell, and further, it is conducive to improving the service life of the plate, thereby helping to improve the service life of the fuel cell. In addition, when the fuel cell performs voltage detection, the plug-in part is inserted into the plug-in hole, so that the plug-in hole can protect the plug-in part, reduce the risk of the plug-in part being exposed and in contact with water vapor, reduce the risk of corrosion of the plug-in part, thereby helping to improve the service life of the plug-in part, and thereby help to improve the service life of the voltage detection component.

[0006] In this solution, the sealing member is annular in shape and is sleeved on the outer circumference of the plug-in portion.

[0007] In this solution, since the cross-sectional shape of the plug-in part is circular, when the shape of the seal is annular, the seal can be sleeved on the outer periphery of the plug-in part, and then when the plug-in part is inserted into the plug-in hole, the seal can block the plug-in hole. At the same time, the annular seal can correspond to the shape of the opening, and when the plug-in part is inserted into the plug-in hole, the seal can block the plug-in hole, which is conducive to improving the sealing of the plug-in part and the plug-in hole, thereby reducing the risk of water vapor directly contacting the connection position between the plug-in part and the plug-in hole, and reducing the possibility of corrosion of the plate.

[0008] In this solution, the sealing member is used to seal and cooperate with the inner wall of the plug-in hole when the plug-in portion extends into the plug-in hole.

[0009] In this solution, at least part of the seal can extend into the plug-in hole and can abut against the inner wall of the plug-in hole, so that there is no gap between the seal and the inner wall of the plug-in hole, and thus there is no connection gap between the plug-in part of the sleeve seal and the plug-in hole, which is beneficial to improve the reliability of the connection between the plug-in part and the plug-in hole, reduce the possibility of water vapor entering the plug-in hole, and reduce the risk of corrosion of the plate, thereby improving the accuracy of detecting the fuel cell voltage.

[0010] In this solution, the sealing member is used to abut against the end surface of the opening when the plug-in portion extends into the plug-in hole, so as to seal the opening.

[0011] In this solution, the outer diameter of the seal is larger than the inner diameter of the plug hole, so that the seal can be completely located outside the plug hole, which is conducive to increasing the electrical connection area between the plug part and the plug hole, thereby improving the detection efficiency. At the same time, the seal can protect the plug part located outside the plug hole and reduce the risk of corrosion of the plug part.

[0012] In this embodiment, along the axial direction of the plug-in part, the sealing member includes a first sealing part and a second sealing part, the second sealing part is close to the electrical connection part, and the cross-sectional area of ​​the second sealing part is larger than the cross-sectional area of ​​the first sealing part, so that when the plug-in part is extended into the plug-in hole, the first sealing part extends into the plug-in hole, and the second sealing part is located outside the plug-in hole.

[0013] In this solution, the maximum outer diameter of the first sealing part is slightly greater than or equal to the inner diameter of the plug hole, and the maximum outer diameter of the second sealing part is greater than the inner diameter of the plug hole. Therefore, when the first sealing part extends into the plug hole, it fits tightly with the inner wall of the plug hole and is used to block the opening of the plug hole. The second sealing part is used to protect the part of the plug part located outside the plug hole, so that the sealing member can be used to seal the connection position between the plug part and the plug hole while protecting the plug part, thereby reducing the risk of corrosion of the plate and the plug part, thereby further improving the accuracy of detecting the fuel cell voltage. At the same time, in the process of the plug part extending into the plug hole, due to the squeezing effect between the sealing member and the plug hole, when the second sealing member is connected to the electrical connection part, the risk of relative movement between the sealing member and the plug part can be reduced, and the sealing of the connection between the plug part and the plug hole can be further improved.

[0014] In this solution, a step is provided between the first sealing portion and the second sealing portion, and when the plug-in portion extends into the plug-in hole, the step is used to abut against the end surface of the opening.

[0015] In this solution, the outer diameter of the step is larger than the inner diameter of the plug hole, so that the step is used to block the opening. The step abuts against the end surface of the opening, and the second sealing portion is connected to the electrical connection portion, thereby reducing the risk of over-matching between the plug part and the plug hole, which is beneficial to improving the position accuracy of the connection between the plug part and the plug hole.

[0016] In this solution, the cross-sectional area of ​​the sealing member gradually decreases in a direction away from the electrical connection portion.

[0017] In this solution, the outer wall of the seal is inclined toward the inside of the seal, and the seal plays a guiding role in the process of the plug-in portion extending into the plug-in hole, which is conducive to improving the position accuracy of the connection between the plug-in portion and the plug-in hole, and can also improve the convenience of connection, and further improve the convenience of connection between the voltage detection component and the plate. At the same time, when the plug-in portion of the seal is extended into the plug-in hole, the inner wall of the plug-in hole can squeeze the outer wall of the seal with a larger outer diameter, so as to achieve reliable sealing between the seal and the plug-in hole. At the same time, the seal located in the plug-in hole has a rebound tendency, so that the outer surface of the seal can be close to the inner wall of the opening close to the plug-in hole, which is conducive to improving the reliability of the seal in blocking the opening.

[0018] In this solution, the base is further provided with a protrusion, and the protrusion is used to cooperate with the groove portion of the electrode plate when the plug-in portion extends into the plug-in hole.

[0019] In this solution, the cooperation between the protrusion and the groove can guide the connection between the plug-in part and the plug-in hole, so that the plug-in part can be accurately inserted into the plug-in hole, reducing the risk of positional displacement during the process of inserting the plug-in hole into the plug-in hole, which is beneficial to improving the efficiency of the connection between the detection component and the electrode plate.

[0020] In this solution, the voltage detection component further includes a locking piece, which is movably connected to the base and is used to lock with the electrode plate when the plug-in portion extends into the plug-in hole.

[0021] In this solution, when the plug-in part is connected to the plug-in hole, the locking member is used to lock the plate, so that the locking member can relatively fix the plate and the voltage detection component, reduce the risk of relative movement of the plate and the voltage detection component along the axis direction of the plug-in part, reduce the risk of the plug-in part being separated from the plug-in hole, and help improve the stability of the connection between the plug-in part and the plug-in hole, thereby helping to improve the reliability of detecting the fuel cell voltage and the accuracy of the detection result. In addition, the locking member is movably connected to the base, so that the locking member can move relative to the base, so that the locking member can be relatively locked or unlocked with the plate, so as to be adjusted according to actual needs.

[0022] In this solution, the locking member includes a locking portion, a connecting portion and an operating portion, the locking portion and the operating portion are connected to two ends of the connecting portion, and the connecting portion is rotatably connected to the base.

[0023] In this solution, the operating part facilitates the operator to drive the locking member to move, so as to relatively lock or unlock the locking member and the electrode plate according to actual work requirements, thereby improving the convenience of using the voltage detection component.

[0024] It should be understood that the foregoing general description and the following detailed description are exemplary only and are not restrictive of the present application. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 It is a schematic diagram of the structure of the metal spring and the electrode plate in a specific embodiment;

[0026] Figure 2 A schematic diagram of the structure of the voltage detection component and the electrode plate provided in the present application being connected in a specific embodiment;

[0027] Figure 3 This is a schematic diagram of the structure of the voltage detection component and the electrode plate provided in the present application, wherein the voltage detection component and the electrode plate are in an unconnected state;

[0028] Figure 4 This is a schematic diagram of the structure of the voltage detection component and the electrode plate provided in the present application, wherein the voltage detection component and the electrode plate are in a connected state;

[0029] Figure 5 A schematic diagram of the structure of the connector and the electrode plate provided in the present application being connected in a specific embodiment;

[0030] Figure 6 A schematic diagram of the structure of the plug-in portion and the plug-in hole provided in the present application being connected in a specific embodiment;

[0031] Figure 7 This is a structural schematic diagram of the connection between the plug-in portion and the plug-in hole provided in the present application in another specific embodiment;

[0032] Figure 8 This is a structural schematic diagram of the connection between the plug-in portion and the plug-in hole provided in the present application in another specific embodiment;

[0033] Fig. 9 This is a schematic structural diagram of the plug-in portion provided in this application in a specific embodiment;

[0034] Fig.10 This is a structural schematic diagram of the connection between the plug-in portion and the plug-in hole provided in the present application in another specific embodiment;

[0035] Fig.11 It is a schematic structural diagram of the locking member and the matching portion provided in the present application in a specific embodiment.

[0036] Description of reference numerals:

[0037] 1- Voltage detection component;

[0038] 11- base;

[0039] 111- raised portion;

[0040] 112-connection hole;

[0041] 113-avoidance department;

[0042] 12-connector;

[0043] 121-plug-in portion;

[0044] 122- electrical connection part;

[0045] 13- Seal;

[0046] 131- first sealing portion;

[0047] 132- second sealing portion;

[0048] 133- steps;

[0049] 14-locking member;

[0050] 141-locking part;

[0051] 142-connecting part;

[0052] 143-operation unit;

[0053] 15-Metal reed;

[0054] 2-plate;

[0055] 21-plug hole;

[0056] 211-opening;

[0057] 22- groove portion;

[0058] 23-cooperation part;

[0059] 231 - first abutting surface.

[0060] The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the present application and, together with the description, serve to explain the principles of the present application. DETAILED DESCRIPTION

[0061] In order to better understand the technical solution of the present application, the embodiments of the present application are described in detail below with reference to the accompanying drawings.

[0062] In a specific embodiment, the present application is further described in detail below through a specific embodiment and in conjunction with the accompanying drawings.

[0063] It should be clear that the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in the field without creative work are within the scope of protection of the present application.

[0064] The terms used in the embodiments of the present application are only for the purpose of describing specific embodiments, and are not intended to limit the present application. The singular forms "a", "said" and "the" used in the embodiments of the present application and the appended claims are also intended to include plural forms, unless the context clearly indicates other meanings.

[0065] It should be understood that the term "and / or" used in this article is only a description of the association relationship of associated objects, indicating that there can be three relationships. For example, A and / or B can represent: A exists alone, A and B exist at the same time, and B exists alone. In addition, the character " / " in this article generally indicates that the associated objects before and after are in an "or" relationship.

[0066] It should be noted that the directional words such as "upper", "lower", "left", and "right" described in the embodiments of the present application are described at the angles shown in the accompanying drawings and should not be understood as limiting the embodiments of the present application. In addition, in the context, it is also necessary to understand that when it is mentioned that an element is connected to another element "upper" or "lower", it can not only be directly connected to another element "upper" or "lower", but also indirectly connected to another element "upper" or "lower" through an intermediate element.

[0067] like Figure 1 As shown, in order to ensure the reliability of the operation of the fuel cell, the voltage detection component 1 is usually used to detect the voltage of the fuel cell. The voltage detection component 1 generally includes a metal spring 15, which is used to clamp the electrode plate 2 so that the fuel cell is electrically connected to the voltage detection component 1. However, the connection method of clamping the electrode plate 2 by the metal spring 15 (i.e., overlapping connection) easily causes the position where the metal spring 15 is connected to the electrode plate 2 to be directly exposed to water vapor, which in turn easily causes corrosion at the interface of the electrode plate 2, thereby reducing the accuracy of the fuel cell voltage detection result.

[0068] To this end, the present application embodiment provides a voltage detection component 1 for detecting the voltage of a fuel cell to solve the above technical problems. Figure 2-Figure 4 As shown, the fuel cell includes a plate 2, the plate 2 has a plug hole 21, and the plug hole 21 has an opening 211. The voltage detection component 1 includes a base 11, a plug connector 12 and a sealing member 13. The plug connector 12 is installed on the base 11. The plug connector 12 includes a plug portion 121 and an electrical connection portion 122. The plug portion 121 is connected to the electrical connection portion 122. The plug portion 121 is used to extend into the plug hole 21 to be electrically connected to the plate 2, and the electrical connection portion 122 is used to be electrically connected to the detection unit. The sealing member 13 is connected to the plug connector 12, and the sealing member 13 is used to block the opening 211 when the plug portion 121 extends into the plug hole 21.

[0069] When the fuel cell needs to detect the voltage, the voltage detection component 1 is moved so that the plug-in portion 121 can be inserted into the plug-in hole 21 of the electrode plate 2, so that the plug-in portion 121 is electrically connected to the electrode plate 2. At the same time, the electrical connection portion 122 of the plug-in component 12 is electrically connected to a detection unit (not shown in the figure) for detecting voltage, so that the detection unit can detect the voltage of the electrode plate 2 through the plug-in component 12. At the same time, the sealing member 13 connected to the plug-in portion 121 can block the opening 211 of the plug-in hole 21, that is, Figure 4 and Figure 5 As shown, the connection position between the plug-in portion 121 and the plug-in hole 21 is sealed by the sealing member 13 so that it is no longer exposed, thereby avoiding the possibility that the connection position between the plug-in portion 121 and the plug-in hole 21 is exposed and in contact with water vapor, thereby reducing the risk of corrosion of the plate 2, which is beneficial to improving the accuracy of detecting the voltage of the fuel cell, and further, it is beneficial to improve the service life of the plate 2, thereby facilitating the service life of the fuel cell. In addition, when the fuel cell performs voltage detection, the plug-in portion 121 extends into the plug-in hole 21, so that the plug-in hole 21 can protect the plug-in portion 121, reduce the risk of the plug-in portion 121 being exposed and in contact with water vapor, reduce the risk of corrosion of the plug-in portion 121, thereby facilitating the service life of the plug-in portion 121, thereby facilitating the service life of the voltage detection component 1.

[0070] Specifically, Figure 2 and Figure 3 As shown, the base 11 of the voltage detection component 1 is provided with a connection hole 112, and the electrical connection portion 122 can be located in the connection hole 112, so that the plug-in portion 121 connected to the electrical connection portion 122 can be installed on the base 11 through the connection hole 112. At the same time, the end of the electrical connection portion 122 away from the electrode plate 2 can extend out of the base 11 to connect to the detection unit, and then the electrode plate 2 is connected to the detection unit through the voltage detection component 1, so that the voltage of the fuel cell can be detected.

[0071] In a possible implementation, Figure 3 and Figure 5 As shown, the seal 13 is in the shape of an annular ring and is sleeved on the outer periphery of the plug-in portion 121. Since the cross-sectional shape of the plug-in portion 121 is circular, when the seal 13 is in the shape of an annular ring, the seal 13 can be sleeved on the outer periphery of the plug-in portion 121, and then when the plug-in portion 121 is inserted into the plug-in hole 21, the seal 13 can block the plug-in hole 21. At the same time, the annular seal 13 can correspond to the shape of the opening 211, and when the plug-in portion 121 is inserted into the plug-in hole 21, the seal 13 can block the plug-in hole 21, which is beneficial to improve the sealing performance between the plug-in portion 121 and the plug-in hole 21, thereby reducing the risk of water vapor directly contacting the connection position between the plug-in portion 121 and the plug-in hole 21, and reducing the possibility of corrosion of the plate 2.

[0072] In a possible implementation, Figure 6 As shown, the seal 13 is used to seal with the inner wall of the plug hole 21 when the plug part 121 is inserted into the plug hole 21. That is, at least part of the seal 13 can be inserted into the plug hole 21 and can abut against the inner wall of the plug hole 21, so that there is no gap between the seal 13 and the inner wall of the plug hole 21, and then there is no connection gap between the plug part 121 and the plug hole 21 used for sleeve sealing 13, which is conducive to improving the reliability of the connection between the plug part 121 and the plug hole 21, reducing the possibility of water vapor entering the plug hole 21, and then reducing the risk of corrosion of the plate 2, thereby improving the accuracy of detecting the fuel cell voltage.

[0073] Among them, in a possible implementation manner, as Figure 6 As shown, the seal 13 can be completely located in the plug hole 21, that is, the inner diameter d1 of the plug hole 21 is equal to the outer diameter d2 of the seal 13, or the outer diameter d2 of the seal 13 is slightly larger than the inner diameter d1 of the plug hole 21, so that when the plug part 121 extends into the plug hole 21, the seal 13 can be completely located in the plug hole 21 and abut against the inner wall of the plug hole 21. In the direction perpendicular to the axis of the plug part 121, the seal 13 can block the gap between the plug part 121 and the plug hole 21, reduce the risk of water vapor entering the connection position between the plug part 121 and the plug hole 21 from the gap between the plug part 121 and the plug hole 21, and further reduce the possibility of corrosion of the plate 2, which is conducive to improving the accuracy of the voltage detection result and the service life of the plate 2. In addition, the seal 13 in this embodiment is small in size, reduces the consumption of materials, and is conducive to reducing production costs.

[0074] Specifically, in this embodiment, when the inner diameter d1 of the plug hole 21 is equal to the outer diameter d2 of the seal 13, the seal 13 is a waterproof and high temperature resistant material with no deformation ability. When the outer diameter d2 of the seal 13 is slightly larger than the inner diameter d1 of the plug hole 21, the seal 13 is a waterproof and high temperature resistant material with deformation ability. The present application does not limit the material of the seal 13, as long as it has a waterproof and high temperature resistant sealing function.

[0075] In addition, in Figure 7 In the embodiment shown, a portion of the sealing member 13 extends into the plug hole 21, and a portion of the sealing member 13 is located outside the plug hole 21, and the end of the sealing member 13 located outside the plug hole 21 can be connected to the electrical connection portion 122. Figure 7As shown, in the process of the plug-in portion 121 extending into the plug-in hole 21, due to the squeezing effect between the seal 13 and the plug-in hole 21, when the seal 13 is connected to the electrical connection portion 122, the risk of relative movement between the seal 13 and the plug-in portion 121 can be reduced, and the sealing performance of the connection between the plug-in portion 121 and the plug-in hole 21 can be further improved. At the same time, the seal 13 located outside the plug-in hole 21 can protect the plug-in portion 121.

[0076] In a possible implementation, Figure 8 As shown, along the axial direction of the plug-in portion 121, the seal 13 includes a first seal 131 and a second seal 132, the second seal 132 is close to the electrical connection portion 122, and the cross-sectional area of ​​the second seal 132 is larger than the cross-sectional area of ​​the first seal 131, so that when the plug-in portion 121 extends into the plug-in hole 21, the first seal 131 extends into the plug-in hole 21, and the second seal 132 is located outside the plug-in hole 21. At the same time, the maximum outer diameter d3 of the first seal 131 is slightly larger than or equal to the inner diameter d1 of the plug-in hole 21, and the maximum outer diameter d4 of the second seal 132 is larger than the inner diameter d1 of the plug-in hole 21. Therefore, when the first sealing portion 131 extends into the plug hole 21, it fits tightly with the inner wall of the plug hole 21 to block the opening 211 of the plug hole 21, and the second sealing portion 132 is used to protect the portion of the plug part 121 located outside the plug hole 21, so that the sealing member 13 can be used to seal the connection position between the plug part 121 and the plug hole 21 while protecting the plug part 121, thereby reducing the risk of corrosion of the electrode plate 2 and the plug part 121, thereby further improving the accuracy of detecting the fuel cell voltage. At the same time, in the process of the plug part 121 extending into the plug hole 21, due to the squeezing effect between the sealing member 13 and the plug hole 21, when the second sealing member 132 is connected to the electrical connection portion 122, the risk of relative movement between the sealing member 13 and the plug part 121 can be reduced, and the sealing performance of the connection between the plug part 121 and the plug hole 21 can be further improved.

[0077] In a possible implementation, Figure 8As shown, the cross-sectional area of ​​the seal 13 gradually decreases in the direction away from the electrical connection portion 122. That is, the outer wall of the seal 13 is inclined toward the inside of the seal 13, and the seal 13 plays a guiding role in the process of the plug-in portion 121 extending into the plug-in hole 21, which is conducive to improving the position accuracy of the connection between the plug-in portion 121 and the plug-in hole 21, and can also improve the convenience of connection, and further improve the convenience of connection between the voltage detection component 1 and the plate 2. At the same time, when the plug-in portion 121 of the seal 13 extends into the plug-in hole 21, the inner wall of the plug-in hole 21 can squeeze the outer wall of the seal 13 with a larger outer diameter, so as to achieve reliable sealing between the seal 13 and the plug-in hole 21, and at the same time, the seal 13 located in the plug-in hole 21 has a rebound tendency, so that the outer surface of the seal 13 can be close to the inner wall of the opening 211 close to the plug-in hole 21, which is conducive to improving the reliability of the seal 13 in blocking the opening 211. In this embodiment, after the plug-in portion 121 extends into the plug-in hole 21 , the portion of the sealing member 13 located inside the plug-in hole 21 is the first sealing portion 131 , and the portion located outside the plug-in hole 21 is the second sealing portion 132 .

[0078] In this embodiment, the sealing member 13 may be a waterproof and high temperature resistant material having elastic deformation capability.

[0079] In another possible implementation, Fig. 9 As shown, there is a step 133 between the first sealing portion 131 and the second sealing portion 132. When the plug-in portion 121 extends into the plug-in hole 21, the step 133 is used to abut against the end face of the opening 211. That is, the outer diameter d5 of the step 133 is greater than the inner diameter d1 of the plug-in hole 21, so that the step 133 is used to block the opening 211. In this embodiment, the sealing member 13 can be a waterproof and high temperature resistant material without elastic deformation ability, or a waterproof and high temperature resistant material with elastic deformation ability. The step 133 abuts against the end face of the opening 211, and the second sealing portion 132 is connected to the electrical connection portion 122, thereby reducing the risk of over-matching between the plug-in portion 121 and the plug-in hole 21, which is beneficial to improve the position accuracy of the connection between the plug-in portion 121 and the plug-in hole 21. At this time, the maximum outer diameter of the first sealing portion 131 can be equal to the inner diameter d1 of the plug-in hole 21, or it can be less than the inner diameter d1 of the plug-in hole 21.

[0080] Specifically, Fig. 9 As shown, the cross-sectional area of ​​the first sealing portion 131 can be gradually reduced. That is, the outer wall of the first sealing portion 131 is inclined toward the plug hole 21, so that the first sealing portion 131 can play a guiding role in the process of the plug part 121 extending into the plug hole 21, which is conducive to improving the position accuracy of the connection between the plug part 121 and the plug hole 21, and at the same time, it can also improve the convenience of connection, and further improve the convenience of connection between the voltage detection component 1 and the electrode plate 2. In addition, the cross-sectional area of ​​the first sealing portion 131 is gradually reduced, which is conducive to reducing material consumption and reducing production costs.

[0081] In another possible implementation, Fig.10 As shown, the seal 13 is used to abut against the end surface of the opening 211 when the plug-in portion 121 extends into the plug-in hole 21 to block the opening 211. That is, the outer diameter d6 of the seal 13 is greater than the inner diameter d1 of the plug-in hole 21, so that the seal 13 can be completely located outside the plug-in hole 21, which is conducive to increasing the electrical connection area between the plug-in portion 121 and the plug-in hole 21, thereby improving the detection efficiency. At the same time, the seal 13 can protect the plug-in portion 121 located outside the plug-in hole 21, reducing the risk of corrosion of the plug-in portion 121.

[0082] In summary, the present application does not limit the appearance of the sealing member 13 , as long as the sealing member 13 can seal the opening 211 of the plug hole 21 .

[0083] In any of the above embodiments, Figure 3 and Figure 4 As shown, the base 11 is further provided with a protrusion 111, and the protrusion 111 is used to cooperate with the groove portion 22 of the plate 2 when the plug-in portion 121 is inserted into the plug-in hole 21. In this embodiment, the cooperation between the protrusion 111 and the groove portion 22 can guide the connection between the plug-in portion 121 and the plug-in hole 21, so that the plug-in portion 121 can be accurately inserted into the plug-in hole 21, reducing the risk of positional deviation in the process of inserting the plug-in portion 21 into the plug-in hole 21, which is conducive to improving the efficiency of the connection between the detection component and the plate 2.

[0084] In other embodiments, the protrusion 111 can be provided on the plate 2, and correspondingly, the groove 22 can be provided on the base 11, and when the plug-in portion 121 extends into the plug-in hole 21, the protrusion 111 can cooperate with the groove 22 to play a guiding role. When the protrusion 111 is provided on the plate 2 and the groove 22 is provided on the base 11, the weight and volume of the plate 2 will not be too large.

[0085] In any of the above embodiments, Figure 4 and Fig.11As shown, the voltage detection component 1 may also include a locking member 14, which is movably connected to the base 11, and the locking member 14 is used to lock with the plate 2 when the plug-in portion 121 extends into the plug-in hole 21. In this embodiment, when the plug-in portion 121 is connected to the plug-in hole 21, the locking member 14 is used to lock the plate 2, so that the locking member 14 can relatively fix the plate 2 and the voltage detection component 1, reduce the risk of relative movement between the plate 2 and the voltage detection component 1 along the axial direction of the plug-in portion 121, reduce the risk of the plug-in portion 121 detaching from the plug-in hole 21, and help improve the stability of the connection between the plug-in portion 121 and the plug-in hole 21, thereby helping to improve the reliability of detecting the fuel cell voltage and the accuracy of the detection result. In addition, the locking member 14 is movably connected to the base 11, so that the locking member 14 can move relative to the base 11, so that the locking member 14 can be relatively locked or unlocked with the plate 2, so as to be adjusted according to actual needs.

[0086] In a possible implementation, Fig.11 As shown, the locking member 14 includes a locking portion 141 , a connecting portion 142 and an operating portion 143 . The locking portion 141 and the operating portion 143 are connected to two ends of the connecting portion 142 , and the connecting portion 142 is rotatably connected to the base 11 .

[0087] In this embodiment, the base 11 and the locking member 14 are connected by a rotating shaft so that the locking portion 141 can rotate relative to the base 11. The base 11 may also include an avoidance portion 113, and when the voltage detection component 1 is not connected to the fuel cell, the avoidance portion 113 can abut against the locking portion 141 and is used to support the locking portion 141. The electrode plate 2 also includes a matching portion 23, and the matching portion 23 includes a first abutting surface 231, and the first abutting surface 231 is used to abut against the locking portion 141, so that the locking member 14 can be locked relative to the electrode plate 2.

[0088] When the plug-in portion 121 is inserted into the plug-in hole 21, the pressing operation portion 143 moves toward the base 11, and the connecting portion 142 drives the locking portion 141 to rotate relative to the base 11, so that the locking portion 141 moves away from the base 11, thereby releasing the locking portion 141 from the avoidance portion 113. Figure 4 , cancel the pressing on the operating part 143, and the locking part 141 rotates relative to the base 11 under the action of gravity, so that the locking part 141 moves toward the electrode plate 2 and abuts against the first abutting surface 231 of the matching part 23, so that the voltage detection component 1 and the electrode plate 2 are relatively locked. At this time, the locking piece 14 can limit the relative movement of the electrode plate 2 and the voltage detection component 1 along the axial direction of the plug-in hole 21, thereby reducing the risk of inaccurate detection results caused by the relative movement of the voltage detection component 1 and the electrode plate 2 during the voltage detection process.

[0089] When the fuel cell voltage detection is completed, the pressing operation part 143 moves toward the base 11, and the connecting part 142 drives the locking part 141 to rotate relative to the base 11, so that the locking part 141 moves away from the base 11, thereby releasing the abutment between the locking part 141 and the first abutting surface 231 of the matching part 23, thereby allowing the voltage detection component 1 and the electrode plate 2 to be unlocked.

[0090] Therefore, the operating portion 143 facilitates the operator to drive the locking member 14 to move, so as to relatively lock or unlock the locking member 14 and the electrode plate 2 according to actual work requirements, thereby improving the convenience of using the voltage detection component 1. In addition, when the locking member 14 and the electrode plate 2 are relatively locked, the avoidance portion 113 can be used to avoid the matching portion 23, thereby avoiding the risk that the first abutting surface 231 and the locking portion 141 cannot abut, thereby improving the reliability of the matching between the matching portion 23 and the locking portion 141.

[0091] In other embodiments, the locking member 14 can slide relative to the base 11, and the locking member 14 is connected to the base 11 through a slide rail or a telescopic mechanism (not shown in the figure) that can move in a direction perpendicular to the axis of the plug-in portion 121, so that the locking portion 141 can move closer to or farther away from the base 11 in a direction perpendicular to the axis of the plug-in portion 121. Specifically, when the plug-in portion 121 extends into the plug-in hole 21, the locking member 14 is driven to move in a direction perpendicular to the axis of the plug-in portion 121 away from the base 11, so that the locking portion 141 moves away from the base 11, thereby releasing the abutment between the locking portion 141 and the avoidance portion 113. Then, when the plug-in portion 121 is connected to the plug-in hole 21, please refer to Figure 4 , drive the locking member 14 to move toward the base 11 along a direction perpendicular to the axis of the plug-in portion 121, so that the locking portion 141 moves toward the electrode plate 2 and abuts against the first abutting surface 231 of the matching portion 23, so that the voltage detection component 1 and the electrode plate 2 are relatively locked. When the fuel cell voltage detection is completed, drive the locking member 14 to move away from the base 11 along a direction perpendicular to the axis of the plug-in portion 121, so that the locking portion 141 is away from the base 11, and then the locking portion 141 is released from the abutment with the first abutting surface 231 of the matching portion 23, so that the voltage detection component 1 and the electrode plate 2 can be unlocked. Therefore, in this embodiment, the locking member 14 is moved relative to the base 11 along a direction perpendicular to the axis of the plug-in portion 121, so that the locking portion 141 can abut or release the abutment with the matching portion 23, so that the locking member 14 and the electrode plate 2 can be relatively locked or unlocked according to actual working requirements.

[0092] The above is only a specific implementation of the embodiment of the present application, but the protection scope of the embodiment of the present application is not limited thereto, and any changes or replacements within the technical scope disclosed in the embodiment of the present application should be included in the protection scope of the embodiment of the present application. Therefore, the protection scope of the embodiment of the present application should be based on the protection scope of the claims.

Claims

1. A voltage detection component for detecting the voltage of a fuel cell, wherein the fuel cell comprises a plate, wherein the plate has a plug hole, and wherein the plug hole has an opening, wherein: The voltage detection component comprises: Pedestal; A plug connector, the plug connector is mounted on the base, the plug connector includes a plug part and an electrical connection part, the plug part is connected to the electrical connection part, the plug part is used to extend into the plug hole and be electrically connected to the electrode plate, and the electrical connection part is used to be electrically connected to the detection unit; A sealing member is connected to the plug-in member and is used to seal the opening when the plug-in portion extends into the plug-in hole.

2. The voltage detection component according to claim 1, characterized in that: The sealing member is annular in shape and sleeved on the outer periphery of the plug-in portion.

3. The voltage detection component according to claim 2, characterized in that: The sealing member is used for sealingly cooperating with the inner wall of the plug hole when the plug portion extends into the plug hole.

4. The voltage detection component according to claim 2, characterized in that: The sealing member is used to abut against the end surface of the opening when the plug-in portion extends into the plug-in hole, so as to seal the opening.

5. The voltage detection component according to claim 2, characterized in that: Along the axial direction of the plug-in part, the sealing member includes a first sealing part and a second sealing part, the second sealing part is close to the electrical connection part, and the cross-sectional area of ​​the second sealing part is larger than the cross-sectional area of ​​the first sealing part, so that when the plug-in part extends into the plug-in hole, the first sealing part extends into the plug-in hole, and the second sealing part is located outside the plug-in hole.

6. The voltage detection component according to claim 5, characterized in that: A step is provided between the first sealing portion and the second sealing portion. When the plug-in portion extends into the plug-in hole, the step is used to abut against the end surface of the opening.

7. The voltage detection component according to claim 2, characterized in that: The cross-sectional area of ​​the sealing member gradually decreases in a direction away from the electrical connection portion.

8. The voltage detection component according to any one of claims 1 to 7, characterized in that: The base is also provided with a protrusion, and the protrusion is used to cooperate with the groove portion of the electrode plate when the plug-in portion extends into the plug-in hole.

9. The voltage detection component according to any one of claims 1 to 7, characterized in that: The voltage detection component further comprises a locking piece, which is movably connected to the base and is used to lock with the electrode plate when the plug-in portion extends into the plug-in hole.

10. The voltage detection component according to claim 9, characterized in that: The locking member comprises a locking portion, a connecting portion and an operating portion, wherein the locking portion and the operating portion are connected to two ends of the connecting portion, and the connecting portion is rotatably connected to the base.

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