Concave-convex point inspection device

Abstract

The invention relates to the technical field of inspection equipment, and provides a concave-convex point inspection device which is characterized in that a base plate is provided with a positioning hole group, a plurality of centering claws are arranged on the base plate through the positioning hole group, and the positions of the plurality of centering claws relative to corresponding positioning holes in the positioning hole group are adjustable; the plurality of centering claws are respectively used for positioning concave points and convex points on the bipolar plate; the swing distance fixing rod is used for being rotationally connected to any centering claw and used for detecting whether the distance between the concave point and the convex point is qualified or not; the plurality of supporting legs are arranged on the substrate at intervals and are used for jointly supporting the substrate on the bipolar plate; the height measuring slide block is slidably connected to the substrate and is used for detecting whether the height of the salient point on the bipolar plate is qualified or not. Compared with the prior art, the distance and the height of a plurality of concave-convex points can be detected at the same time, all the concave-convex points on the bipolar plate can be detected by moving the detection device, and the detection efficiency of the concave-convex points of the bipolar plate is effectively improved.

Description

Technical Field

[0001] The present invention relates to the technical field of testing equipment, and in particular to a concave-convex point testing device. Background Art

[0002] Bipolar plates are key repetitive components of the electrolyzer of alkaline water electrolysis hydrogen production equipment. Each electrolyzer has about 50 to 400 bipolar plates. The middle part of the bipolar plate is punched into a large number of concave and convex hemispherical shapes arranged according to a certain rule (such as triangle or square, etc.), which play the role of flow disturbance, conduction and supporting the electrode network. Therefore, the height and position accuracy of the concave and convex points are very important.

[0003] In the prior art, conventional inspection tools such as depth micrometers and vernier calipers are usually used to inspect the height and spacing of each point in the concave and convex points. However, this method requires inspecting each concave and convex point in turn. Taking a bipolar plate with a diameter of 1800 mm as an example, there are about 5000 to 9000 concave and convex points on each bipolar plate, and each electrolytic cell has about 50 to 400 bipolar plates of varying numbers, so the inspection efficiency is low. Summary of the invention

[0004] The problem solved by the present invention is how to improve the inspection efficiency of bipolar plates.

[0005] In order to solve the above problems, the present invention provides a concave-convex point inspection device.

[0006] In a first aspect, the present invention provides a concave-convex point inspection device, comprising a substrate, a centering claw, a support foot, a height measuring slider and a swing distance rod;

[0007] A positioning hole group is provided on the substrate, the positioning hole group includes a plurality of positioning holes, a plurality of centering claws are arranged on the substrate through corresponding positioning holes in the positioning hole group, and the positions of the plurality of centering claws are adjustable relative to the corresponding positioning holes in the positioning hole group, and the plurality of centering claws are respectively used to locate the positions of the concave points and the convex points on the bipolar plate, wherein the plurality of positioning holes in the positioning hole group correspond to the positions of the concave points and the convex points respectively;

[0008] The swing distance rod is rotatably connected to any one of the centering claws, and the length of the swing distance rod corresponds to a preset target distance between the concave point and the convex point, so as to check whether the distance between the concave point and the convex point is qualified;

[0009] A plurality of the legs are arranged at intervals on the substrate, and the plurality of the legs are used to jointly support the substrate on the bipolar plate;

[0010] The height measuring slider is slidably connected to the substrate. The distance between the end surface of the height measuring module facing the bipolar plate and the end surface of the bipolar plate facing the substrate corresponds to a preset target height of the bump, and is used to check whether the height of the bump on the bipolar plate is qualified.

[0011] Optionally, the centering claw includes a claw body and a centering mechanism, the centering mechanism includes a connecting tube, an upper wheel rim, a lower wheel rim and a shift rod, the upper wheel rim and the lower wheel rim are respectively arranged at two ends of the connecting tube, and the end of the connecting tube away from the lower wheel rim passes through the upper wheel rim along the axial direction of the upper wheel rim, the shift rod is arranged on the end surface of the upper wheel rim away from the lower wheel rim, one end of the claw body is used to pass through the lower wheel rim and be threadedly connected to the connecting tube, and the other end is used to contact the concave point or the convex point, the diameter of the upper wheel rim is larger than the diameter of the positioning hole in the positioning hole group, and the diameter of the cross section of the connecting tube is smaller than the diameter of the positioning hole in the positioning hole group.

[0012] Optionally, the swing distance rod includes a connecting rod, a ring and a convex block, the ring and the convex block are respectively connected to the two ends of the connecting rod, the ring is rotatably connected to one end of the connecting tube passing through the upper wheel rim, and the distance between the end surface of the convex block away from the connecting rod and the center point of the ring is equal to the sum of the target preset spacing and the preset radius, and the preset radius is the radius of the cross-section of the convex point or the concave point on the bipolar plate.

[0013] Optionally, the convex block includes a connected main body and a protrusion, the main body is connected to the connecting rod, the distance between the end surface of the main body away from the connecting rod and the center point of the ring is less than or equal to the sum of the target preset spacing and the preset radius, and the distance between the end surface of the protrusion away from the connecting rod and the center point of the ring is greater than the sum of the preset target spacing and the preset radius.

[0014] Optionally, the centering claw further includes a knob, and the knob is used to be connected to an end of the claw body away from the bipolar plate through a set screw.

[0015] Optionally, the base plate is provided with a sliding groove, the height measuring slider passes through the sliding groove and is used to slide along the sliding groove, and a limit sleeve is provided on the height measuring slider, and the limit sleeve is used to limit the displacement of the height measuring slider in the vertical direction.

[0016] Optionally, the end face of the height measuring slider facing the bipolar plate is provided with a slider protrusion, the distance between the end face of the height measuring module facing the bipolar plate and the end face of the bipolar plate facing the substrate is greater than or equal to the preset target height, the distance between the end face of the slider protrusion away from the height measuring slider and the end face of the bipolar plate facing the substrate is less than the preset target height, and the distance between the end face of the slider protrusion away from the height measuring slider and the end face of the bipolar plate facing the height measuring module is less than a preset threshold.

[0017] Optionally, the positioning hole group includes a first hole, a second hole and a third hole, and a line connecting center points of the first hole, the second hole and the third hole forms a triangle, wherein the length of each side of the triangle is the preset target spacing.

[0018] Optionally, a mounting hole is further provided on the base plate, the mounting hole is at least connected to the positioning holes in the positioning hole group, and the diameter of the mounting hole is greater than or equal to the diameter of the lower wheel rim;

[0019] The concave-convex point inspection device also includes an open sleeve, which is arranged in the installation hole through a steel ball spring pin, and the diameter of the open sleeve is equal to the diameter of the positioning hole in the positioning hole group.

[0020] Optionally, three support leg holes are spaced apart on the substrate, and a line connecting the center points of the three support leg holes forms a triangle, and a support leg is correspondingly arranged on each of the support leg holes;

[0021] The support leg comprises a magnet block and a support leg body, and the support leg body is connected to the support leg hole through the magnet block.

[0022] The beneficial effect of the concave-convex point inspection device of the present invention is that when in use, firstly, a plurality of legs are arranged on the substrate at intervals, and the plurality of legs support the substrate stably on the bipolar plate, providing an inspection basis for the subsequent inspection of the concave-convex points of the bipolar plate. Then, the centering claw is installed on the substrate through the positioning hole group opened on the substrate 1, wherein the positioning holes opened in the positioning hole group correspond to the positions of the concave-convex points on the bipolar plate, so that after the centering claw is installed on the substrate, each centering claw corresponds to a concave point or a convex point, and the positions of the plurality of centering claws are adjustable relative to the corresponding positioning holes in the positioning hole group, so that the position of the centering claw can be adjusted according to the center position of the concave points and convex points on the actual bipolar plate, so that the axis of the centering claw coincides with the center of the concave-convex point, and the centering claw can indicate the position of the corresponding concave-convex point. Since the spacing between each concave and convex point is the same, the length of the swing distance rod is set corresponding to the preset target spacing between the concave points and the convex points. The swing distance rod is rotatably connected to any centering claw. The relationship between the spacing between the peripheral centering claw and the centering claw connected to the swing distance rod and the preset target spacing is determined by rotation to check whether the spacing between the corresponding concave and convex points is qualified. For example, the swing distance rod is rotated. If the end face of the swing distance rod away from the centering claw connected to the swing distance rod can abut against the centering claw being checked, it is judged that the spacing between the concave point or convex point corresponding to the centering claw rotatably connected to the swing distance rod and the convex point or concave point corresponding to the centering claw being checked is equal to the preset target spacing, and the spacing between the concave point or convex point corresponding to the centering claw rotatably connected to the swing distance rod and the convex point or concave point corresponding to the centering claw being checked is qualified. On the contrary, if the end face of the swing distance rod away from the centering claw connected to the swing distance rod is stuck or does not contact the centering claw being checked, it is unqualified. The height measuring slider is slidably connected to the substrate, and the distance between the end face of the height measuring module facing the bipolar plate and the end face of the bipolar plate facing the substrate corresponds to the preset target height of the convex point. By sliding the height measuring slider, the relationship between the height of the convex point on the bipolar plate and the preset target height is determined. For example, the height measuring slider is slid from the direction away from the convex point to the direction close to the convex point. If the end face of the height measuring slider facing the bipolar plate can abut against the highest point of the convex point, it means that the height of the convex point is equal to the preset target height, and the height of the convex point is qualified. If the height measuring slider passes the highest point of the convex point and does not contact the convex point, or the height measuring slider is stuck by the convex point, it means that the height of the convex point is unqualified. The concave-convex point inspection device of the present invention can simultaneously inspect the spacing and height of multiple concave-convex points, and by moving the inspection device, all concave-convex points on the bipolar plate can be inspected. Compared with traditional conventional inspection tools, the inspection efficiency of concave-convex points on the bipolar plate is effectively improved. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 It is a structural schematic diagram of a concave-convex point inspection device according to an embodiment of the present invention;

[0024] Figure 2 A schematic diagram of a group of positioning holes provided on a substrate according to an embodiment of the present invention;

[0025] Figure 3 Schematic diagram of the bipolar plate structure;

[0026] Figure 4 This is a schematic diagram of the centering mechanism structure of an embodiment of the present invention;

[0027] FIG. 5( a ) is a schematic diagram of the claw structure of an embodiment of the present invention Figure 1 ;

[0028] FIG. 5( b ) is a schematic diagram of the claw structure of an embodiment of the present invention Figure 2 ;

[0029] Figure 6 This is a schematic diagram of the structure of a swing distance rod according to an embodiment of the present invention;

[0030] Figure 7 It is a schematic diagram of the left-side planing structure of the concave-convex point inspection device according to an embodiment of the present invention;

[0031] Figure 8 A schematic diagram of the height measuring slider structure of an embodiment of the present invention;

[0032] Fig. 9 Schematic diagram of the support leg structure of an embodiment of the present invention.

[0033] Description of reference numerals:

[0034] 1-Substrate;

[0035] 2-centering claw; 21-claw body; 211-first claw body; 212-second claw body; 213-third claw body; 22-centering mechanism; 221-connecting pipe; 222-upper wheel rim; 223-lower wheel rim; 224-shift lever; 23-knob;

[0036] 3-supporting foot; 31-magnet block; 32-supporting foot body;

[0037] 4-height measuring slider; 41-slider protrusion;

[0038] 5-swinging distance rod; 51-ring; 52-connecting rod; 53-convex block; 531-main body; 532-protrusion;

[0039] 6-Limiting sleeve;

[0040] 7-Open sleeve. DETAILED DESCRIPTION

[0041] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, the specific embodiments of the present invention are described in detail below in conjunction with the accompanying drawings. Although certain embodiments of the present invention are shown in the accompanying drawings, it should be understood that the present invention can be implemented in various forms and should not be interpreted as being limited to the embodiments described herein. On the contrary, these embodiments are provided to provide a more thorough and complete understanding of the present invention. It should be understood that the drawings and embodiments of the present invention are only for exemplary purposes and are not intended to limit the scope of protection of the present invention.

[0042] The term "including" and its variations used in this document are open inclusions, that is, "including but not limited to"; the term "based on" means "based at least in part on"; the term "one embodiment" means "at least one embodiment"; the term "another embodiment" means "at least one other embodiment"; the term "some embodiments" means "at least some embodiments"; the term "optionally" means "optional embodiments". The relevant definitions of other terms will be given in the following description. It should be noted that the concepts of "first", "second", etc. mentioned in the present invention are only used to distinguish different devices, modules or units, and are not used to limit the order or interdependence of the functions performed by these devices, modules or units.

[0043] It should be noted that the modifications of "one" and "plurality" mentioned in the present invention are illustrative rather than restrictive, and those skilled in the art should understand that, unless otherwise clearly indicated in the context, it should be understood as "one or more".

[0044] like Figure 1 As shown, in view of the problems existing in the above-mentioned related technologies, this embodiment provides a concave-convex point inspection device, including a substrate 1, a centering claw 2, a support foot 3, a height measuring slider 4 and a swinging distance rod 5;

[0045] A positioning hole group is provided on the substrate 1, and the positioning hole group includes a plurality of positioning holes. The plurality of centering claws 2 are arranged on the substrate 1 through the corresponding positioning holes in the positioning hole group, and the positions of the plurality of centering claws 2 are adjustable relative to the corresponding positioning holes in the positioning hole group. The plurality of centering claws 2 are respectively used to locate the positions of the concave points and the convex points on the bipolar plate, wherein the plurality of positioning holes in the positioning hole group correspond to the positions of the concave points and the convex points, respectively.

[0046] Specifically, the arrangement rules of the concave and convex points of the standard electrolytic cell bipolar plate are obtained in advance, and the positioning hole group is opened on the substrate 1 according to the arrangement rules of the concave and convex points, that is, the arrangement of the positioning hole group is consistent with the arrangement rules of the concave and convex points of the bipolar plate, each positioning hole corresponds to a concave point or a convex point, and correspondingly, the spacing between the positioning holes is the same. Figure 2The first hole 1#, the second hole 2#, the third hole 3#, the fourth hole 4# and the fifth hole 5# shown in the figure are an embodiment of a positioning hole group of a substrate 1 provided by the present invention, which is based on the following Figure 3 The bipolar plate shown has concave and convex points arranged in an arrangement. When in use, a plurality of centering claws 2 are arranged on the substrate 1 through corresponding positioning holes in the positioning hole group, and the claw ends of the centering claws 2 abut against the concave points or convex points to determine the precise position of the corresponding concave points or convex points. It should be noted that since the concave and convex points of the produced bipolar plates do not necessarily meet the standards, their center points may deviate from the axis of the centering claw 2, affecting the spacing between the concave points and the convex points. Therefore, in order for the centering claw 2 to accurately indicate the position of the concave and convex points, the centering claw 2 is set to be fine-tuned relative to the position of the corresponding positioning hole in the positioning hole group, so as to make precise adjustments and indications based on the center position of the concave and convex points.

[0047] The swing distance rod 5 is rotatably connected to any one of the centering claws 2, and the length of the swing distance rod 5 corresponds to the preset target distance between the concave point and the convex point, so as to check whether the distance between the concave point and the convex point is qualified.

[0048] Specifically, since the opening of each positioning hole corresponds to the position of the standard concave and convex points of the bipolar plate, and the spacing between each positioning hole is the same, in theory, the spacing between the centering claws 2 installed on the positioning holes is the same. Based on this, in the embodiment of the present invention, a swinging distance rod 5 is rotatably connected to any centering claw 2, and the length of the swinging distance rod 5 corresponds to the preset target spacing between the concave point and the convex point (wherein the preset target spacing is the distance between the edges of the concave point or the convex point), so as to check whether the spacing between each centering claw 2 is qualified, and then judge whether the spacing between the concave point and the convex point is qualified. For example, the swinging distance rod 5 is rotated, and if the end face of the swinging distance rod 5 away from the centering claw 2 that is rotatably connected can abut against the centering claw 2 to be tested, then it is judged that the spacing between the concave point or convex point corresponding to the centering claw 2 to which the swinging distance rod 5 is rotatably connected and the convex point or concave point corresponding to the centering claw 2 to be tested is qualified, otherwise, if it is stuck or not in contact with the centering claw 2 to be tested, it is unqualified.

[0049] The plurality of legs 3 are arranged at intervals on the substrate 1 , and the plurality of legs 3 are used to jointly support the substrate 1 on the bipolar plate.

[0050] Specifically, in order to ensure the stability of the substrate 1, a plurality of legs 3 are arranged at intervals on the substrate 1 to stably support the substrate 1 on the bipolar plate. It should be noted that the legs 3 are usually in contact with the plane of the bipolar plate.

[0051] The height measuring slider 4 is slidably connected to the substrate 1. The distance between the end face of the height measuring module 4 facing the bipolar plate and the end face of the bipolar plate facing the substrate 1 corresponds to the preset target height of the bump, and is used to check whether the height of the bump on the bipolar plate is qualified.

[0052] Specifically, in addition to checking the spacing between the concave and convex points, it is also necessary to check whether the height of the convex points is qualified. Correspondingly, after adjusting the support feet to stabilize the substrate 1, a height measuring slider 4 is provided at a position corresponding to the convex point on the substrate 1. The distance between the end face of the height measuring module 4 facing the bipolar plate and the end face of the bipolar plate facing the substrate 1 corresponds to the preset target height of the convex point. The preset target height is the standard convex point height. The height measuring slider 4 can slide on the substrate 1 through the slide groove provided on the substrate 1, and its sliding direction is from the direction away from the convex point to the direction close to the convex point to check whether the height of the convex point on the bipolar plate is qualified. For example, after the substrate 1 is installed, the height measuring slider 4 is slid from the direction away from the convex point to the direction close to the convex point. If the height measuring slider 4 can abut against the highest point of the convex point, it means that the height of the convex point is qualified. If the height measuring slider 4 passes the highest point of the convex point and does not contact the convex point, or the height measuring slider 4 is stuck by the convex point, it means that the height of the convex point is unqualified.

[0053] It should be noted that the height of the height measuring slider 4 is determined according to a preset standard bump height, that is, if the standard bump height is y, the distance between the end surface of the height measuring slider 4 facing the bump and the bipolar plate plane is y.

[0054] In addition, after all the concave and convex points on one side are inspected, the bipolar plate can be turned 180 degrees to inspect the concave and convex points on the other side.

[0055] When in use, firstly, a plurality of legs 3 are arranged at intervals on the substrate 1, and the plurality of legs 3 support the substrate 1 stably on the bipolar plate, providing a basis for subsequent inspection of the concave and convex points of the bipolar plate. Then, the centering claw 2 is installed on the substrate 1 through the positioning hole group opened on the substrate 1, wherein the positioning holes opened in the positioning hole group correspond to the positions of the concave and convex points on the bipolar plate, so that after the centering claw 2 is installed on the substrate, each centering claw 2 corresponds to a concave point or a convex point, and the positions of the plurality of centering claws 2 are adjustable relative to the corresponding positioning holes in the positioning hole group, so that the position of the centering claw 2 can be adjusted according to the center position of the concave and convex points on the actual bipolar plate, so that the axis of the centering claw 2 coincides with the center of the concave and convex points, and at this time, the centering claw 2 can indicate the position of the corresponding concave and convex points. Since the spacing between each concave and convex point is the same, the length of the swing distance rod 5 is set corresponding to the preset target spacing between the concave points and the convex points. The swing distance rod 5 is rotatably connected to any centering claw 2. The relationship between the spacing between the peripheral centering claw 2 and the centering claw 2 connected to the swing distance rod 5 and the preset target spacing is determined by rotation to check whether the spacing between the corresponding concave and convex points is qualified. For example, the swing distance rod 5 is rotated. If the end face of the swing distance rod 5 away from the centering claw 2 connected by rotation can abut against the centering claw 2 being checked, it is judged that the spacing between the concave point or convex point corresponding to the centering claw 2 connected by rotation with the swing distance rod 5 and the convex point or concave point corresponding to the centering claw 2 being checked is equal to the preset target spacing, and the spacing between the concave point or convex point corresponding to the centering claw 2 connected by rotation with the swing distance rod 5 and the convex point or concave point corresponding to the centering claw 2 being checked is qualified. On the contrary, if the end face of the swing distance rod 5 away from the centering claw 2 connected by rotation is stuck or does not contact the centering claw 2 being checked, it is unqualified. The height measuring slider 4 is slidably connected to the substrate 1. The distance between the end face of the height measuring module 4 facing the bipolar plate and the end face of the bipolar plate facing the substrate 1 corresponds to the preset target height of the convex point. By sliding the height measuring slider 4, the relationship between the height of the convex point on the bipolar plate and the preset target height is determined. For example, the height measuring slider 4 is slid from the direction away from the convex point to the direction close to the convex point. If the end face of the height measuring slider 4 facing the bipolar plate can abut against the highest point of the convex point, it means that the height of the convex point is equal to the preset target height, and the height of the convex point is qualified. If the height measuring slider 4 passes the highest point of the convex point and does not contact the convex point, or the height measuring slider 4 is stuck by the convex point, it means that the height of the convex point is unqualified. The concave-convex point inspection device of the present invention can inspect the spacing and height of multiple concave-convex points at the same time, and by moving the inspection device, all concave-convex points on the bipolar plate can be inspected. Compared with traditional conventional inspection tools, the inspection efficiency of concave-convex points on the bipolar plate is effectively improved.

[0056] Optionally, the centering claw 2 includes a claw body 21 and a centering mechanism 22, the centering mechanism 22 includes a connecting tube 221, an upper wheel rim 222, a lower wheel rim 223 and a lever 224, the upper wheel rim 222 and the lower wheel rim 223 are respectively arranged at two ends of the connecting tube 221, and the end of the connecting tube 221 away from the lower wheel rim 223 passes through the upper wheel rim 222 along the axial direction of the upper wheel rim 222, the lever 224 is arranged on the end surface of the upper wheel rim 222 away from the lower wheel rim 223, one end of the claw body 21 is used to pass through the lower wheel rim 223 and be threadedly connected with the connecting tube 221, and the other end is used to contact the concave point or the convex point, the diameter of the upper wheel rim 222 is larger than the diameter of the positioning holes in the positioning hole group, and the diameter of the cross section of the connecting tube 221 is smaller than the diameter of the positioning holes in the positioning hole group.

[0057] Specifically, Figure 4 As shown, the centering claw 2 includes a centering mechanism 22, including a connecting tube 221, an upper rim 222, a lower rim 223 and a lever 224. The upper rim 222 and the lower rim 223 are respectively arranged at both ends of the connecting tube 221. The diameter of the upper rim 222 is larger than the diameter of the positioning holes in the positioning hole group, so that when the centering claw 2 is installed on the substrate 1, the end surface of the upper rim 222 facing the bipolar plate abuts against the end surface of the substrate 1 away from the bipolar plate, so that the centering claw 2 is arranged on the substrate 1. The diameter of the lower rim 223 can be set according to actual conditions. Generally speaking, the diameter of the lower rim 223 is the same as the diameter of the upper rim 222 to prevent the centering claw 2 from falling off the substrate 1 during the movement of the concave-convex point inspection device. However, in this case, a mounting hole (the diameter of the mounting hole is larger than the diameter of the upper rim 222 and the lower rim 223) should be provided. The centering mechanism 22 can be installed on the substrate 1 through the mounting hole, and then moved to the corresponding positioning hole through, for example, the opened channel. One end of the connecting tube 221 away from the lower wheel rim 223 penetrates the upper wheel rim 222 along the axial direction of the upper wheel rim 222, and the swinging distance rod 5 is rotatably connected to the connecting tube 221 penetrating the upper wheel rim 222. The cross-sectional diameter of the connecting tube 221 is smaller than the diameter of the positioning hole, so as to provide an adjustment range when the centering claw 2 is adjusted according to the center of the concave and convex points. The lever 224 is arranged on the end surface of the upper wheel rim 222 away from the lower wheel rim 223, and the position of the centering claw 2 can be adjusted by toggling the lever 224.

[0058] As shown in FIG5 , the centering claw 2 also includes a claw body 21, which includes a first claw body 211, a second claw body 212, and a third claw body 213, each of which has a decreasing cross section. The third claw body 213 is a claw structure, which is used to contact the inner surface and / or outer surface of the concave and convex point to stabilize the centering claw 2. A threaded structure is provided on the second claw body 212, and a corresponding threaded structure is also provided inside the connecting pipe 221. The second claw body 212 can be installed on the connecting pipe 221 through the threaded structure. The first claw body 211 is a cylindrical structure, and the height of the centering claw 2 can be adjusted by rotating the first claw body 211. The claw structure of the third claw body 213 in FIG5 (a) is smaller, and usually contacts the inner surface of the concave point of the bipolar plate. The claw structure of the third claw body 213 in FIG5 (b) is larger and has a hook portion, which usually contacts the outer surface of the convex point of the bipolar plate. The hook portion is used to increase the fixing force between the centering claw 2 and the convex point.

[0059] Alternatively, if Figure 6 As shown, the swing distance rod 5 includes a connecting rod 52, a collar 51 and a convex block 53, the collar 51 and the convex block 53 are respectively connected to the two ends of the connecting rod 52, the collar 51 is rotatably connected to one end of the connecting tube 221 passing through the upper wheel rim 222, and the distance between the end surface of the convex block 53 away from the connecting rod 52 and the center point of the collar 51 is equal to the sum of the target preset spacing and the preset radius, and the preset radius is the radius of the cross section of the convex point or the concave point on the bipolar plate.

[0060] Alternatively, if Figure 6 As shown, the convex block 53 includes a connected main body portion 531 and a protrusion 532, the main body portion 531 is connected to the connecting rod 52, the distance between the end surface of the main body portion 531 away from the connecting rod 52 and the center point of the collar 51 is less than or equal to the sum of the target preset spacing and the preset radius, and the distance between the end surface of the protrusion 532 away from the connecting rod 52 and the center point of the collar 51 is greater than the sum of the preset target spacing and the preset radius.

[0061] Specifically, if the main body 531 passes through one end of the upper wheel rim 222 through the connecting tube 221, and the protruding portion 532 abuts against the end of the connecting tube 221 passing through the upper wheel rim 222, the corresponding spacing between the concave point and the convex point is qualified. If both the main body 531 and the protruding portion 532 pass through one end of the upper wheel rim 222 through the connecting tube 221, or the main body 531 abuts against the end of the connecting tube 221 passing through the upper wheel rim 222, the corresponding spacing between the concave point and the convex point is unqualified. It should be noted that the positions of the main body 531 and the protrusion are set according to the standard spacing of the concave and convex points of the bipolar plate. If the standard spacing of the concave and convex points of the bipolar plate is a, the qualified range is -0.5mm~0.5mm, and the preset radius is r, then the distance between the end face of the main body 531 away from the connecting rod 52 and the center point of the ring 51 is less than or equal to a+r-0.5mm, the thickness of the protrusion 532 is 1mm, and the distance between the end face of the protrusion 532 away from the connecting rod 52 and the center point of the ring 51 is greater than a+1mm+0.5mm.

[0062] Alternatively, if Figure 7 As shown, the centering claw 2 further includes a knob 23, and the knob 23 is used to be connected to an end of the claw body 21 away from the bipolar plate through a set screw.

[0063] Specifically, the knob 23 is connected to the first claw body portion 211 of the claw body 21 via a set screw, so that the operator can adjust the height of the centering claw 2 easily.

[0064] In addition, if there is a certain requirement for the length of the centering claw 2, the diameters of the first claw body 211 and the second claw body 212 can be set equal, the first claw body 211 is connected to the knob 23 by a set screw, and a threaded portion corresponding to the inside of the connecting tube 221 is provided on the first claw body 211 to increase the length of the centering claw 2. Such a situation can be adjusted according to actual conditions and is not specifically limited here.

[0065] Alternatively, if Figure 1 As shown, the base plate 1 is provided with a sliding groove (such as Figure 2 6# slot and 7# slot in the middle), the height measuring slider 4 passes through the sliding slot and is used to slide along the sliding slot. A limit sleeve 6 is provided on the height measuring slider 4, and the limit sleeve 6 is used to limit the displacement of the height measuring slider 4 in the vertical direction.

[0066] Alternatively, if Figure 8As shown, the end face of the height measuring slider 4 facing the bipolar plate is provided with a slider protrusion 41, the distance between the end face of the height measuring module 4 facing the bipolar plate and the end face of the bipolar plate facing the substrate 1 is greater than or equal to the preset target height, the distance between the end face of the slider protrusion 41 away from the height measuring slider 4 and the end face of the bipolar plate facing the substrate 1 is less than the preset target height, and the distance between the end face of the slider protrusion 41 away from the height measuring slider 4 and the end face of the height measuring module 4 facing the bipolar plate is less than a preset threshold.

[0067] Specifically, the height of the standard bump is a preset target height. If the height measuring slider 4 passes through the bump and the slider protrusion 41 abuts against the bump, the height of the corresponding bump is qualified. If the height measuring slider 4 and the slider protrusion 41 both pass through the highest point of the bump, or the height measuring slider 4 and the slider protrusion 41 do not pass through the highest point of the bump, the height of the corresponding bump is unqualified. It should be noted that the positions of the height measuring slider 4 and the slider protrusion 41 are set according to the standard height of the bipolar plate bump. If the standard target height of the bipolar plate bump is b, and the qualified range is -0.5mm to 0.5mm, the distance between the end face of the height measuring slider 4 facing the bipolar plate and the end face of the bipolar plate facing the substrate is less than or equal to b-0.5mm, the thickness of the slider protrusion 41 is 1mm, and the distance between the end face of the slider protrusion 41 facing the bipolar plate and the end face of the bipolar plate facing the substrate is greater than b+1mm+0.5mm.

[0068] In addition, since the surface of the bump is arc-shaped, the thickness of the slider protrusion 41 needs to be set according to the radius and the highest point of the bump, that is, a preset threshold is set. The distance between the end face of the slider protrusion 41 away from the height measuring slider 4 and the end face of the height measuring module 4 facing the bipolar plate is less than the preset threshold, so as to avoid the slider protrusion 41 getting stuck when the highest point of the bump is not reached, resulting in the inability to accurately check the bump height.

[0069] Alternatively, if Figure 2 As shown, the positioning hole group includes a first hole 1#, a second hole 2# and a third hole 3#, and the line connecting the center points of the first hole 1#, the second hole 2# and the third hole 3# forms a triangle, wherein the length of each side of the triangle is the sum of the preset target spacing and the radii of two adjacent holes.

[0070] In addition, the number of positioning holes can be increased according to the size of the substrate 1, but it should be noted that the position of each positioning hole corresponds to the position of the concave and convex points on the bipolar plate, and since the distance between each concave point and convex point is equal, the positioning holes in any adjacent triangular positions are obtained, and the triangles formed by the center points of the three positioning holes are the same in shape and are equilateral triangles, such as the equilateral triangle formed by the center points of the first hole 1#, the second hole 2# and the third hole 3#, the triangle obtained by connecting the center points of the first hole 1#, the second hole 2# and the fourth hole 4#, and the triangle obtained by connecting the center points of the first hole 1#, the third hole 3# and the fifth hole 5#.

[0071] Optionally, the substrate 1 is also provided with a mounting hole, such as Figure 2 As shown in the 5# hole, the mounting hole is connected with at least two positioning holes in the positioning hole groups, and the diameter of the mounting hole is greater than or equal to the diameter of the lower wheel rim 223.

[0072] Specifically, when the diameter of the positioning hole is smaller than the diameter of the upper wheel rim 222 and the lower wheel rim 223, the centering claw 2 cannot be directly installed to the substrate 1 through the positioning hole. At this time, the centering claw 2 is installed on the substrate 1 through the mounting hole, and then moved to the corresponding positioning hole through the connecting groove connecting the positioning hole and the mounting hole to realize the installation of the centering claw 2.

[0073] The concave-convex point inspection device also includes an open sleeve 7, which is used to be set in the installation hole through a steel ball spring pin, and the diameter of the open sleeve 7 is equal to the diameter of the positioning hole in the positioning hole group.

[0074] Specifically, Figure 1 As shown, after the centering claw 2 is installed, the mounting hole can also be used as a positioning hole to check the spacing between the concave and convex points of the bipolar plate. Therefore, the open sleeve 7 is set in the mounting hole through a steel ball spring pin so that the diameter of the mounting hole is equal to the diameter of the positioning hole in the positioning hole group, so that the centering claw 2 can be adjusted on the mounting hole.

[0075] Optionally, three support holes are provided on the substrate 1 at intervals, such as Figure 2 The 8# hole, 9# hole and 10# hole in the bracket are connected, and the center points of the three support leg holes are connected in a triangle, and each support leg hole is correspondingly provided with a support leg 3.

[0076] The support leg 3 includes a magnet block 31 and a support leg body 32 , and the support leg body 32 is connected to the support leg hole through the magnet block 31 .

[0077] Specifically, Fig. 9As shown, the support leg 3 can be connected to the support leg hole by the magnet block 31. If the standard height of the bumps in the bipolar plate to be inspected changes, only the support leg 3 of the corresponding height needs to be replaced, and there is no need to replace the slider and the centering claw 2, etc., thereby reducing the inspection cost and increasing the versatility of the bump inspection device.

[0078] Although the present invention is disclosed as above, the protection scope of the present invention is not limited thereto. Those skilled in the art may make various changes and modifications without departing from the spirit and scope of the present invention, and these changes and modifications will fall within the protection scope of the present invention.

Claims

1. A concave-convex point inspection device, characterized in that: It comprises a base plate (1), a centering claw (2), a support foot (3), a height measuring slide block (4) and a swinging distance rod (5); The substrate (1) is provided with a positioning hole group, the positioning hole group includes a plurality of positioning holes, a plurality of centering claws (2) are arranged on the substrate (1) through corresponding positioning holes in the positioning hole group, and the positions of the plurality of centering claws (2) are respectively adjustable relative to the corresponding positioning holes in the positioning hole group, and the plurality of centering claws (2) are respectively used to locate the positions of the concave points and the convex points on the bipolar plate, wherein the plurality of positioning holes in the positioning hole group respectively correspond to the positions of the concave points and the convex points; The swing distance rod (5) is rotatably connected to any one of the centering claws (2), and the length of the swing distance rod (5) corresponds to a preset target distance between the concave point and the convex point, so as to check whether the distance between the concave point and the convex point is qualified; A plurality of the supporting legs (3) are arranged at intervals on the substrate (1), and the plurality of the supporting legs (3) are used to jointly support the substrate (1) on the bipolar plate; The height measuring slider (4) is slidably connected to the substrate (1); the distance between the end surface of the height measuring module (4) facing the bipolar plate and the end surface of the bipolar plate facing the substrate (1) corresponds to a preset target height of the protrusion, and is used to check whether the height of the protrusion on the bipolar plate is qualified.

2. The concave-convex point inspection device according to claim 1, characterized in that: The centering claw (2) comprises a claw body (21) and a centering mechanism (22); the centering mechanism (22) comprises a connecting tube (221), an upper wheel rim (222), a lower wheel rim (223) and a lever (224); the upper wheel rim (222) and the lower wheel rim (223) are respectively arranged at two ends of the connecting tube (221); and one end of the connecting tube (221) away from the lower wheel rim (223) passes through the upper wheel rim (222) along the axial direction of the upper wheel rim (222). 2), the lever (224) is arranged on the end surface of the upper wheel rim (222) away from the lower wheel rim (223), one end of the claw body (21) is used to penetrate the lower wheel rim (223) and be threadedly connected to the connecting tube (221), and the other end is used to contact the concave point or the convex point, the diameter of the upper wheel rim (222) is larger than the diameter of the positioning holes in the positioning hole group, and the diameter of the cross section of the connecting tube (221) is smaller than the diameter of the positioning holes in the positioning hole group.

3. The concave-convex point inspection device according to claim 2, characterized in that: The swing distance rod (5) comprises a connecting rod (52), a collar (51) and a convex block (53), wherein the collar (51) and the convex block (53) are respectively connected to two ends of the connecting rod (52), and the collar (51) is rotatably connected to one end of the connecting tube (221) passing through the upper wheel rim (222), and the distance between the end surface of the convex block (53) away from the connecting rod (52) and the center point of the collar (51) is equal to the sum of the target preset spacing and a preset radius, and the preset radius is the radius of the cross section of the convex point or the concave point on the bipolar plate.

4. The concave-convex point inspection device according to claim 3, characterized in that: The convex block (53) comprises a connected main body (531) and a protruding portion (532), wherein the main body (531) is connected to the connecting rod (52), and the distance between the end surface of the main body (531) away from the connecting rod (52) and the center point of the collar (51) is less than or equal to the sum of the target preset spacing and the preset radius, and the distance between the end surface of the protruding portion (532) away from the connecting rod (52) and the center point of the collar (51) is greater than the sum of the preset target spacing and the preset radius.

5. The concave-convex point inspection device according to claim 2, characterized in that: The centering claw (2) further comprises a knob (23), and the knob (23) is used to be connected to an end of the claw body (21) away from the bipolar plate through a set screw.

6. The concave-convex point inspection device according to claim 1, characterized in that: The base plate (1) is provided with a sliding groove, the height measuring slider (4) passes through the sliding groove and is used to slide along the sliding groove, and a limiting sleeve (6) is sleeved on the height measuring slider (4), and the limiting sleeve (6) is used to limit the displacement of the height measuring slider (4) in the vertical direction.

7. The concave-convex point inspection device according to claim 6, characterized in that: The end face of the height measuring slider (4) facing the bipolar plate is provided with a slider protrusion (41); the distance between the end face of the height measuring module (4) facing the bipolar plate and the end face of the bipolar plate facing the substrate (1) is greater than or equal to the preset target height; the distance between the end face of the slider protrusion (41) away from the height measuring slider (4) and the end face of the bipolar plate facing the substrate (1) is less than the preset target height; and the distance between the end face of the slider protrusion (41) away from the height measuring slider (4) and the end face of the height measuring module (4) facing the bipolar plate is less than a preset threshold.

8. The concave-convex point inspection device according to claim 7, characterized in that: The positioning hole group includes a first hole, a second hole and a third hole, and a line connecting the center points of the first hole, the second hole and the third hole forms a triangle, wherein the length of each side of the triangle is the sum of the preset target spacing and the radius of two adjacent holes.

9. The concave-convex point inspection device according to claim 2, characterized in that: The base plate (1) is also provided with a mounting hole, the mounting hole being in communication with at least one of the positioning holes in the positioning hole group, and the diameter of the mounting hole being greater than or equal to the diameter of the lower wheel rim (223); The concave-convex point inspection device also includes an open sleeve (7), which is arranged in the installation hole through a steel ball spring pin, and the diameter of the open sleeve (7) is equal to the diameter of the positioning hole in the positioning hole group.

10. The concave-convex point inspection device according to claim 1, characterized in that: The base plate (1) is provided with three support foot holes at intervals, and a line connecting the center points of the three support foot holes forms a triangle, and each support foot hole is provided with a corresponding support foot (3); The support leg (3) comprises a magnet block (31) and a support leg body (32), and the support leg body (32) is connected to the support leg hole through the magnet block (31).

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