Device for detecting conductivity of surface of fuel cell polar plate in all-point manner

Abstract

The embodiment of the utility model provides a device for detecting the conductivity of the surface of a fuel cell polar plate at all points, and relates to the field of conductivity detection of the fuel cell polar plate. The problem that a fixed-point resistance measurement method is not comprehensive and accurate enough is solved. The utility model discloses a device for detecting the conductivity of the surface of a fuel cell polar plate at all points. The device comprises a working platform, an XY linear module, an electric control lifting mechanism, a first probe, an electric control rotating mechanism, an electric control linear mechanism and a second probe, the XY linear module is used for driving the electric control lifting mechanism and the first probe to synchronously move along the X direction and the Y direction; the electric control lifting mechanism is used for driving the first probe and the electric control rotating mechanism to synchronously move in the Z direction; the electric control rotating mechanism is used for driving the electric control linear mechanism and the second probe to rotate around a preset center line, and the electric control linear mechanism is used for driving the second probe to move in the linear direction passing through the preset center line. The resistance between any two points in the to-be-measured area can be measured, and the measurement precision and efficiency are improved.

Description

Technical Field

[0001] The utility model relates to the field of fuel cell plate conductivity detection, in particular to a device for full-point detection of fuel cell plate surface conductivity. Background Art

[0002] In recent years, with the intensification of the global greenhouse effect, the dual carbon policy has been introduced to ensure energy security. As a green, pollution-free and widely available secondary energy source, hydrogen energy has been regarded by many regions as an important direction for future energy development. Fuel cells, as an important way to apply hydrogen energy, have developed rapidly in recent years, and the plate, as the core component of the fuel cell, occupies an extremely important position in the fuel cell. As the core component of the fuel cell, the plate plays the role of electrical conduction, heat conduction, mass transfer, and supporting membrane electrodes. As an extremely important role of the plate, the strength of the electrical conductivity will directly affect the final performance of the fuel cell. At the same time, through the conductive properties of the plate, we can clearly understand the surface cleanliness of the plate and the quality and state of the coating. The production of the plate needs to go through stamping, cleaning, laser welding, coating, sealing and other processes before it can be loaded into the fuel cell stack for use. Among them, the values ​​of the plate conductivity at three nodes are particularly important.

[0003] (1) Before laser welding, after the metal plate is stamped, its surface will be attached with impurities such as stamping oil, dust, iron filings, and oil stains, which will have a great impact on the welding quality of the plate, causing cold welding, and then leading to leakage at the connection of the plate. Therefore, before welding, it is necessary to ensure that the surface of the plate has a high degree of cleanliness; therefore, before welding, the plate needs to be cleaned, and after cleaning, the cleaning effect needs to be judged. Judging the surface cleanliness of the plate by its conductive properties is an effective and simple method.

[0004] (2) After plating, the metal plate will eventually be used in an acidic environment, and metal materials are very susceptible to corrosion in an acidic environment, which will not only affect the life of the plate, but also greatly reduce the conductivity of the plate by the oxides generated on its surface, thus affecting the performance of the battery stack. In addition, the plate is plated with a material that is highly conductive, which will further enhance the conductivity of the plate.

[0005] In order to improve the service life and conductivity of the plate, the metal plate needs to be plated on the surface. However, the appearance of the plate before and after plating cannot be distinguished by the naked eye. In order to detect whether the coating state meets the qualified standards, judging by the conductivity of the plate surface is an effective and simple method. It can determine whether the coating quality is qualified. If an abnormality occurs, it is necessary to consider the plate state, equipment state, and whether the coating material is abnormal.

[0006] (3) Before being installed in a fuel cell stack, a key function of the plate in the fuel cell is to conduct electricity, and its conductivity will directly affect the performance of the fuel cell stack. Therefore, the conductivity of the plate can be tested before being installed in the fuel cell stack.

[0007] The above three nodes, whether direct or indirect, require testing of the conductivity of the plate. The test method is to measure the conductivity of the plate surface by the resistance value on the plate surface. Measurement principle: volt-ampere method, by applying a fixed voltage (such as 24V) between two points on the plate, and then measuring the current between the two points, through R = U / I, that is, resistance = voltage / current, calculate the surface resistance of the plate. The larger the resistance, the worse the conductivity, and vice versa.

[0008] The existing resistance measurement method is a fixed-point method, which measures resistance at two fixed positions on the plate and uses the result as the surface resistance of the plate. If the resistance at a certain point (area) on the plate changes, it will have different effects on the measured result depending on its position (regardless of size). Intuitively speaking, the farther the resistance change position is from the measured point, the smaller the effect. Therefore, when the area where the resistance increases or decreases is far away from the measured point, the result will change very slightly, making it impossible to judge the eligibility of the plate, which lacks rigor for products that require precision. Utility Model Content

[0009] The purpose of the utility model includes, for example, providing a device for detecting the surface conductivity of a fuel cell plate at all points, which can improve the problem that the fixed-point resistance measurement method is not comprehensive and accurate enough.

[0010] The embodiments of the present invention can be implemented as follows:

[0011] An embodiment of the utility model provides a device for full-point detection of the surface conductivity of a fuel cell plate, comprising a working platform, an XY linear module, an electrically controlled lifting mechanism, a first probe, an electrically controlled rotating mechanism, an electrically controlled linear mechanism and a second probe; a test area for placing the plate is provided on the working platform; the XY linear module is mounted on the working platform, the electrically controlled lifting mechanism is mounted on the XY linear module, the first probe is mounted on the electrically controlled lifting mechanism, and the XY linear module is used to drive the electrically controlled lifting mechanism and the first probe to move synchronously along the X direction and the Y direction; the electrically controlled rotating mechanism is mounted on the electrically controlled lifting mechanism, the electrically controlled linear mechanism is mounted on the electrically controlled rotating mechanism, and the second probe is mounted on the electrically controlled linear mechanism; the electrically controlled lifting mechanism is used to drive the first probe and the electrically controlled rotating mechanism to move synchronously along the Z direction; the electrically controlled rotating mechanism is used to drive the electrically controlled linear mechanism and the second probe to rotate around a preset center line, and the electrically controlled linear mechanism is used to drive the second probe to move along a linear direction passing through the preset center line.

[0012] In addition, the device for detecting the surface conductivity of a fuel cell plate at all points provided by the embodiment of the utility model may also have the following additional technical features:

[0013] Optionally, the preset center line, the center line of the first probe and the center line of the second probe all extend along the Z direction.

[0014] Optionally, the device for detecting the surface conductivity of a fuel cell plate at all points also includes a first mounting plate and a second mounting plate; the first mounting plate is mounted on the XY linear module, and the XY linear module drives the first mounting plate to move along the X direction and the Y direction; the first mounting plate and the second mounting plate are connected via the electrically-controlled lifting mechanism, and the electrically-controlled lifting mechanism drives the second mounting plate to rise or fall along the Z direction; the electrically-controlled rotating mechanism is mounted on the second mounting plate.

[0015] Optionally, the first mounting plate and the second mounting plate are arranged in parallel and spaced apart along the Z direction.

[0016] Optionally, the electric-controlled lifting mechanism includes a lifting motor, a first scissors frame, a second scissors frame and a rotating shaft; the first scissors frame and the second scissors frame are cross-hinged in the middle, the two ends of the first scissors frame are respectively hinged to the first mounting plate and the second mounting plate, one end of the second scissors frame is hinged to the first mounting plate, and the other end of the second scissors frame is rotatably mounted on the second mounting plate through a rotating shaft; the lifting motor is fixed on the second mounting plate, and the lifting motor is transmission-connected to the rotating shaft, and the lifting motor is used to drive the first scissors frame and the second scissors frame to unfold or fold during the process of driving the rotating shaft to rotate, so as to drive the second mounting plate to approach or move away from the first mounting plate along the Z direction.

[0017] Optionally, the electrically controlled rotating mechanism includes a rotating motor and a rotating shaft; the device for detecting the surface conductivity of the fuel cell plate at all points also includes a linear platform, one end of the linear platform is rotatably connected to the second mounting plate via the rotating shaft, the rotating motor is fixed to the second mounting plate, and the rotating motor is transmission-connected to the rotating shaft, and the rotating motor is used to drive the linear platform to rotate around the rotating shaft; the center line of the rotating shaft is the preset center line; the electrically controlled linear mechanism is installed on the linear platform.

[0018] Optionally, the linear platform and the second mounting plate are arranged in parallel and spaced apart along the Z direction; and the electrically controlled rotating mechanism is located between the second mounting plate and the linear platform.

[0019] Optionally, the electrically controlled linear mechanism includes a linear motor, a guide rod and a linear slide; the guide rod is fixed to the linear platform along a straight line direction passing through the preset center line, and the linear slide is slidably connected to the guide rod; the second probe is fixed on the linear slide, and the center line of the second probe is coplanar with the center line of the rotating shaft; the linear motor is transmission-connected to the linear slide, and the linear motor is used to drive the linear slide to slide along the guide rod.

[0020] Optionally, the XY linear module includes an X-axis module and a Y-axis module; the X-axis module includes a first slide rail and a first slider; the Y-axis module includes a second slide rail and a second slider; the first slide rail is arranged along the X direction, the first slider is slidably arranged on the first slide rail, the second slide rail is arranged along the Y direction, and the second slide rail is fixed to the first slider, and the second slider is slidably arranged on the second slide rail; the first mounting plate is horizontally fixed on the second slider.

[0021] Optionally, there are two first slide rails and two first sliders; two first slide rails are fixed side by side and spaced apart on two opposite sides of the to-be-tested area, and the first sliders on the two first slide rails move synchronously along the X direction.

[0022] The beneficial effects of the device for detecting the surface conductivity of a fuel cell plate at all points according to the embodiment of the utility model include, for example:

[0023] A device for full-point detection of the surface conductivity of a fuel cell plate comprises a working platform, an XY linear module, an electric-controlled lifting mechanism, a first probe, an electric-controlled rotating mechanism, an electric-controlled linear mechanism and a second probe; a test area for placing the plate is provided on the working platform; the XY linear module is mounted on the working platform, the electric-controlled lifting mechanism is mounted on the XY linear module, the first probe is mounted on the electric-controlled lifting mechanism, the XY linear module is used to drive the electric-controlled lifting mechanism and the first probe to move synchronously along the X direction and the Y direction; the electric-controlled rotating mechanism is mounted on the electric-controlled lifting mechanism, the electric-controlled linear mechanism is mounted on the electric-controlled rotating mechanism, and the second probe is mounted on the electric-controlled linear mechanism; the electric-controlled lifting mechanism is used to drive the first probe and the electric-controlled rotating mechanism to move synchronously along the Z direction; the electric-controlled rotating mechanism is used to drive the electric-controlled linear mechanism and the second probe to rotate around a preset center line, and the electric-controlled linear mechanism is used to drive the second probe to move in a linear direction passing through the preset center line.

[0024] The position of the first probe is adjusted by the XY linear module, and the position of the second probe is adjusted by the electrically controlled rotating mechanism and the electrically controlled linear mechanism, so that the resistance between any two points in the measured area can be measured. Through big data analysis, the specific position that affects the resistance can be accurately obtained. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] In order to more clearly illustrate the technical solutions of the embodiments of the utility model, the drawings required for use in the embodiments will be briefly introduced below. It should be understood that the following drawings only show certain embodiments of the utility model and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other relevant drawings can be obtained based on these drawings without paying creative work.

[0026] Figure 1 An isometric view of the first viewing angle of the device for detecting the surface conductivity of a fuel cell plate at all points provided in this embodiment;

[0027] Figure 2 An isometric view of a portion of the structure from a second viewing angle of the device for full-point detection of fuel cell plate surface conductivity provided in this embodiment.

[0028] Icons: 10-device for full-point detection of fuel cell plate surface conductivity; 100-working platform; 110-test area; 200-XY linear module; 210-electrically controlled lifting mechanism; 220-first probe; 230-electrically controlled rotating mechanism; 240-electrically controlled linear mechanism; 250-second probe; 300-first mounting plate; 310-second mounting plate; 400-lifting motor; 500-rotating motor; 600-linear motor; 610-guide rod; 620-linear slide plate; 700-X module; 710-Y module. DETAILED DESCRIPTION

[0029] In order to make the purpose, technical scheme and advantages of the embodiments of the utility model clearer, the technical scheme in the embodiments of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiments of the utility model. Obviously, the described embodiments are part of the embodiments of the utility model, not all of the embodiments. Generally, the components of the embodiments of the utility model described and shown in the drawings here can be arranged and designed in various different configurations.

[0030] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the present invention to be protected, but merely represents selected embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0031] It should be noted that similar reference numerals and letters denote similar items in the following drawings, and therefore, once an item is defined in one drawing, further definition and explanation thereof is not required in subsequent drawings.

[0032] In the description of the present utility model, it should be noted that if the terms "upper", "lower", "inside", "outside", etc. appear, the orientation or position relationship indicated is based on the orientation or position relationship shown in the accompanying drawings, or is the orientation or position relationship in which the utility model product is usually placed when used. It is only for the convenience of describing the utility model and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, it cannot be understood as a limitation on the present utility model.

[0033] In addition, the terms “first”, “second”, etc., if used, are merely used to distinguish between the descriptions and should not be understood as indicating or implying relative importance.

[0034] It should be noted that, in the absence of conflict, the features in the embodiments of the present invention may be combined with each other.

[0035] Combine the following Figure 1 to Figure 2 The device 10 for detecting the conductivity of the surface of a fuel cell plate at all points provided in this embodiment is described in detail.

[0036] Please refer to Figure 1 and Figure 2 The embodiment of the utility model provides a device 10 for detecting the surface conductivity of a fuel cell plate at all points, comprising a working platform 100, an XY linear module 200, an electric-controlled lifting mechanism 210, a first probe 220, an electric-controlled rotating mechanism 230, an electric-controlled linear mechanism 240 and a second probe 250; the working platform 100 is provided with a test area 110 for placing the plate; the XY linear module 200 is installed on the working platform 100, the electric-controlled lifting mechanism 210 is installed on the XY linear module 200, the first probe 220 is installed on the electric-controlled lifting mechanism 210, and the XY linear module 200 is used to drive the electric-controlled lifting mechanism 230. The lowering mechanism 210 and the first probe 220 move synchronously along the X direction and the Y direction; the electric-controlled rotating mechanism 230 is installed on the electric-controlled lifting mechanism 210, the electric-controlled linear mechanism 240 is installed on the electric-controlled rotating mechanism 230, and the second probe 250 is installed on the electric-controlled linear mechanism 240; the electric-controlled lifting mechanism 210 is used to drive the first probe 220 and the electric-controlled rotating mechanism 230 to move synchronously along the Z direction; the electric-controlled rotating mechanism 230 is used to drive the electric-controlled linear mechanism 240 and the second probe 250 to rotate around a preset center line, and the electric-controlled linear mechanism 240 is used to drive the second probe 250 to move along a straight line passing through the preset center line.

[0037] The second probe 250 is mounted on the electric linear mechanism 240 , which is mounted on the electric rotating mechanism 230 . The electric rotating mechanism 230 and the first probe 220 are both mounted on the electric lifting mechanism 210 , which is mounted on the XY linear module 200 .

[0038] The XY linear module 200 drives the first probe 220 and the second probe 250 to move along the X direction and the Y direction, and moves the first probe 220 to the corresponding coordinate; the electrically controlled rotating mechanism 230 drives the second probe 250 to rotate around a preset center line, and the preset center line determines the center point of the circle. The electrically controlled linear mechanism 240 drives the second probe 250 to move along the diameter direction of the preset center line. The position of the second probe 250 is adjusted by adjusting the center and the diameter. After the second probe 250 is adjusted to the preset position; the electrically controlled lifting mechanism 210 drives the first probe 220 and the second probe 250 to descend synchronously after the position adjustment is completed, so as to contact the electrode plate placed on the test area 110 to realize resistance detection.

[0039] The first probe 220 can be adjusted to any position in the plane through the XY linear module 200, and the second probe 250 can be adjusted to any position in the plane through the electrically controlled rotating mechanism 230 and the electrically controlled linear mechanism 240, so that the resistance between any two points in the electrode plate in the test area 110 can be detected, thereby improving the comprehensiveness of the detection and thus improving the detection accuracy.

[0040] Reference Figure 1 and Figure 2 In this embodiment, the preset center line, the center line of the first probe 220, and the center line of the second probe 250 all extend along the Z direction. If all three extend along the Z direction, the position adjustment of the first probe 220 in the XY direction also drives the position adjustment of the second probe 250 in the XY direction, thereby improving the accuracy of position adjustment.

[0041] Reference Figure 1 and Figure 2 In this embodiment, the device 10 for detecting the surface conductivity of the fuel cell plate at all points also includes a first mounting plate 300 and a second mounting plate 310; the first mounting plate 300 is installed on the XY linear module 200, and the XY linear module 200 drives the first mounting plate 300 to move along the X direction and the Y direction; the first mounting plate 300 and the second mounting plate 310 are connected through an electrically controlled lifting mechanism 210, and the electrically controlled lifting mechanism 210 drives the second mounting plate 310 to rise or fall along the Z direction; the electrically controlled rotating mechanism 230 is installed on the second mounting plate 310.

[0042] The connection between the electric lifting mechanism 210 and the XY linear module 200 is realized through the first mounting plate 300. The installation of the electric lifting mechanism 210 is realized through the second mounting plate 310, and is also used to install the electric rotating mechanism 230. The layout of the structural components is reasonable, and the occupied space is reduced.

[0043] Reference Figure 1 and Figure 2In this embodiment, the first mounting plate 300 and the second mounting plate 310 are arranged in parallel and spaced apart along the Z direction. The second probe 250 and the electric-controlled rotating mechanism 230 are both mounted on the second mounting plate 310, and the second mounting plate 310 is parallel to the first mounting plate 300. Then, the driving of the electric-controlled lifting mechanism 210 can synchronously adjust the heights of the first probe 220 and the second probe 250, thereby improving the height adjustment accuracy.

[0044] Reference Figure 1 and Figure 2 In this embodiment, the electric-controlled lifting mechanism 210 includes a lifting motor 400, a first scissors frame, a second scissors frame and a rotating shaft; the first scissors frame and the second scissors frame are cross-hinged in the middle, the two ends of the first scissors frame are respectively hinged to the first mounting plate 300 and the second mounting plate 310, one end of the second scissors frame is hinged to the first mounting plate 300, and the other end of the second scissors frame is rotatably mounted on the second mounting plate 310 through the rotating shaft; the lifting motor 400 is fixed on the second mounting plate 310, and the lifting motor 400 is connected to the rotating shaft in a transmission manner. The lifting motor 400 is used to drive the first scissors frame and the second scissors frame to unfold or fold during the process of driving the rotating shaft to rotate, so as to drive the second mounting plate 310 to approach or move away from the first mounting plate 300 along the Z direction.

[0045] The middle part of the first scissors frame and the middle part of the second scissors frame are hinged. During the mutual rotation of the first scissors frame and the second scissors frame, one set of diagonal angles increases, while the other set of diagonal angles decreases, thereby adjusting the distance between the first mounting plate 300 and the second mounting plate 310. Since the first mounting plate 300 is fixed on the XY linear module 200, the electric-controlled lifting mechanism 210 drives the second mounting plate 310 to rise close to the first mounting plate 300, or to descend away from the first mounting plate 300. How to drive the first scissors frame and the second scissors frame to rotate relative to each other, in this embodiment, the second scissors frame is driven to swing by a motor, thereby driving the first scissors frame to rotate relative to each other. Specifically, the second scissors frame is fixed to the rotating shaft, and the rotating shaft is rotatably connected to the second mounting plate 310, and the lifting motor 400 drives the rotating shaft to rotate.

[0046] Reference Figure 1 and Figure 2 In this embodiment, the electrically controlled rotating mechanism 230 includes a rotating motor 500 and a rotating shaft; the device 10 for detecting the surface conductivity of a fuel cell plate at all points also includes a linear platform, one end of which is rotatably connected to the second mounting plate 310 through the rotating shaft, the rotating motor 500 is fixed to the second mounting plate 310, and the rotating motor 500 is transmission-connected to the rotating shaft, and the rotating motor 500 is used to drive the linear platform to rotate around the rotating shaft; the center line of the rotating shaft is a preset center line; the electrically controlled linear mechanism 240 is installed on the linear platform.

[0047] The rotary motor 500 is used to drive the linear platform to rotate around the rotation axis, thereby driving the electric-controlled linear mechanism 240 and the second probe 250 to rotate synchronously, and then combined with the electric-controlled linear mechanism 240 to drive the second probe 250 to move linearly through a preset center line to achieve position adjustment of the second probe 250.

[0048] Reference Figure 1 and Figure 2 In this embodiment, the linear platform and the second mounting plate 310 are arranged parallel to each other along the Z direction; the electric-controlled rotating mechanism 230 is located between the second mounting plate 310 and the linear platform.

[0049] The first mounting plate 300, the second mounting plate 310 and the linear platform are arranged in parallel and spaced apart along the Z direction. The linear platform rotates in the XY plane. The second probe 250 makes a linear movement in the horizontal plane, which is the radius distance from the preset center line, so as to facilitate the adjustment and determination of the coordinates of the second probe 250.

[0050] Reference Figure 1 and Figure 2 In this embodiment, the electrically controlled linear mechanism 240 includes a linear motor 600, a guide rod 610 and a linear slide 620; the guide rod 610 is fixed on the linear platform along a straight line direction passing through a preset center line, and the linear slide 620 is slidably connected to the guide rod 610; the second probe 250 is fixed on the linear slide 620, and the center line of the second probe 250 is coplanar with the center line of the rotating shaft; the linear motor 600 is transmission-connected to the linear slide 620, and the linear motor 600 is used to drive the linear slide 620 to slide along the guide rod 610.

[0051] The guide rod 610 is used to guide the second probe 250 to move along a straight line passing through a preset center line. The linear slide 620 is used to install the second probe 250. The linear slide 620 and the second probe 250 move synchronously.

[0052] Reference Figure 1 and Figure 2 In this embodiment, the XY linear module 200 includes an X-axis module 700 and a Y-axis module 710; the X-axis module 700 includes a first slide rail and a first slider; the Y-axis module 710 includes a second slide rail and a second slider; the first slide rail is arranged along the X direction, the first slider is slidably arranged on the first slide rail, the second slide rail is arranged along the Y direction, and the second slide rail is fixed to the first slider, and the second slider is slidably arranged on the second slide rail; the first mounting plate 300 is horizontally fixed on the second slider.

[0053] The first slider moves along the first slide rail, driving the second slide rail and the first mounting plate 300 to move along the X direction. The second slider moves along the second slide rail, driving the first mounting plate 300 to move along the Y direction, thereby driving the electrically controlled lifting mechanism 210, the first probe 220, the electrically controlled rotating mechanism 230, the electrically controlled linear mechanism 240 and the second probe 250 installed on the first mounting plate 300 to move along the X direction and the Y direction.

[0054] Reference Figure 1 and Figure 2 In this embodiment, there are two first slide rails and two first sliders; the two first slide rails are fixed side by side and spaced apart on two opposite sides of the test area 110, and the first sliders on the two first slide rails move synchronously along the X direction.

[0055] Both ends of the second slide rail are fixed to the two first slide blocks respectively, and the test area 110 is located between the two first slide rails, so as to realize the movement of the first probe 220 and the second probe 250 in the XY direction of the plane where the electrode plate is located.

[0056] According to the device 10 for detecting the surface conductivity of a fuel cell plate at all points provided in this embodiment, the working principle includes: the resistance measurement between any two points in the test area 110 (large enough to accommodate multiple generations of products) can be realized, and the resistance value data of the object to be tested can be collected more comprehensively. If there is a local resistance change area, its specific location can also be accurately determined, thereby reflecting that there are coating defects or inadequate cleaning in a certain area of ​​the plate. By measuring a large amount of data and recording it in the database, the normal resistance range under each group of positions can be obtained, and subsequent use can directly determine whether the value is qualified through big data analysis.

[0057] Operation method: put the electrode plate to be tested into the test area 110; position the first probe 220 by the XY linear module 200 to measure the first preset position; use the electric-controlled rotating mechanism 230 to adjust the angle and the electric-controlled linear mechanism 240 to adjust the distance to determine the position of the second probe 250 corresponding to the second preset position; the first probe 220 and the second probe 250 are both probes with good conductivity and built-in springs, connected with a wire, and the other end of the wire is connected to a high-precision milliohm-level resistance ohmmeter; after the two measuring points are in place, the first probe 220 and the second probe 250 are driven downward as a whole by the electric-controlled lifting mechanism 210, and the two probes are pressed on the test point at the same time to obtain the resistance value; the system compares and analyzes the conclusion with the database and automatically determines whether the value is qualified.

[0058] The device 10 for detecting the surface conductivity of a fuel cell plate at all points provided in this embodiment has at least the following advantages:

[0059] The position of the first probe 220 is adjusted by the XY linear module 200, and the position of the second probe 250 is adjusted by the electrically controlled rotating mechanism 230 and the electrically controlled linear mechanism 240, so that the resistance between any two points in the test area 110 can be measured. Through big data analysis, the specific position that affects the resistance can be accurately obtained.

[0060] The above is only a specific implementation of the utility model, but the protection scope of the utility model is not limited thereto. Any changes or substitutions that can be easily thought of by a person skilled in the art within the technical scope disclosed by the utility model should be included in the protection scope of the utility model. Therefore, the protection scope of the utility model should be based on the protection scope of the claims.

Claims

1. A device for detecting the conductivity of a fuel cell plate surface at all points, characterized in that: include: A working platform (100), wherein a test area (110) for placing a plate is provided on the working platform (100); An XY linear module (200), an electric-controlled lifting mechanism (210), and a first probe (220), wherein the XY linear module (200) is mounted on the working platform (100), the electric-controlled lifting mechanism (210) is mounted on the XY linear module (200), and the first probe (220) is mounted on the electric-controlled lifting mechanism (210), and the XY linear module (200) is used to drive the electric-controlled lifting mechanism (210) and the first probe (220) to move synchronously along the X direction and the Y direction; An electrically controlled rotating mechanism (230), an electrically controlled linear mechanism (240) and a second probe (250), wherein the electrically controlled rotating mechanism (230) is mounted on the electrically controlled lifting mechanism (210), the electrically controlled linear mechanism (240) is mounted on the electrically controlled rotating mechanism (230), and the second probe (250) is mounted on the electrically controlled linear mechanism (240); the electrically controlled lifting mechanism (210) is used to drive the first probe (220) and the electrically controlled rotating mechanism (230) to move synchronously along a Z direction; the electrically controlled rotating mechanism (230) is used to drive the electrically controlled linear mechanism (240) and the second probe (250) to rotate around a preset center line, and the electrically controlled linear mechanism (240) is used to drive the second probe (250) to move along a straight line passing through the preset center line.

2. The device for detecting the surface conductivity of a fuel cell plate at all points according to claim 1 is characterized in that: The preset center line, the center line of the first probe (220) and the center line of the second probe (250) all extend along the Z direction.

3. The device for detecting the surface conductivity of a fuel cell plate at all points according to claim 1 is characterized in that: The device for detecting the surface conductivity of a fuel cell plate at all points also includes a first mounting plate (300) and a second mounting plate (310); the first mounting plate (300) is mounted on the XY linear module (200), and the XY linear module (200) drives the first mounting plate (300) to move along the X direction and the Y direction; the first mounting plate (300) and the second mounting plate (310) are connected via the electrically controlled lifting mechanism (210), and the electrically controlled lifting mechanism (210) drives the second mounting plate (310) to rise or fall along the Z direction; and the electrically controlled rotating mechanism (230) is mounted on the second mounting plate (310).

4. The device for detecting the surface conductivity of a fuel cell plate at all points according to claim 3 is characterized in that: The first mounting plate (300) and the second mounting plate (310) are arranged in parallel and spaced apart along the Z direction.

5. The device for detecting the surface conductivity of a fuel cell plate at all points according to claim 4 is characterized in that: The electric-controlled lifting mechanism (210) comprises a lifting motor (400), a first scissors frame, a second scissors frame and a rotating shaft; the first scissors frame and the second scissors frame are cross-hinged at the middle, the two ends of the first scissors frame are respectively hinged to the first mounting plate (300) and the second mounting plate (310), one end of the second scissors frame is hinged to the first mounting plate (300), and the other end of the second scissors frame is rotatably mounted on the second mounting plate (310) via a rotating shaft; the lifting motor (400) is fixed on the second mounting plate (310), and the lifting motor (400) is connected to the rotating shaft in a transmission manner, and the lifting motor (400) is used to drive the first scissors frame and the second scissors frame to unfold or fold during the process of driving the rotating shaft to rotate, so as to drive the second mounting plate (310) to approach or move away from the first mounting plate (300) along the Z direction.

6. The device for detecting the surface conductivity of a fuel cell plate at all points according to claim 3 is characterized in that: The electrically controlled rotating mechanism (230) comprises a rotating motor (500) and a rotating shaft; the device for detecting the surface conductivity of a fuel cell plate at all points also comprises a linear platform, one end of which is rotatably connected to the second mounting plate (310) via the rotating shaft, the rotating motor (500) is fixed to the second mounting plate (310), and the rotating motor (500) is transmission-connected to the rotating shaft, and the rotating motor (500) is used to drive the linear platform to rotate around the rotating shaft; the center line of the rotating shaft is the preset center line; the electrically controlled linear mechanism (240) is mounted on the linear platform.

7. The device for detecting the surface conductivity of a fuel cell plate at all points according to claim 6 is characterized in that: The linear platform and the second mounting plate (310) are arranged in parallel and spaced apart along the Z direction; the electrically controlled rotating mechanism (230) is located between the second mounting plate (310) and the linear platform.

8. The device for detecting the surface conductivity of a fuel cell plate at all points according to claim 6 is characterized in that: The electrically controlled linear mechanism (240) comprises a linear motor (600), a guide rod (610) and a linear slide (620); the guide rod (610) is fixed on the linear platform along a straight line direction passing through the preset center line, and the linear slide (620) is slidably connected to the guide rod (610); the second probe (250) is fixed on the linear slide (620), and the center line of the second probe (250) is coplanar with the center line of the rotating shaft; the linear motor (600) is transmission-connected to the linear slide (620), and the linear motor (600) is used to drive the linear slide (620) to slide along the guide rod (610).

9. The device for detecting the surface conductivity of a fuel cell plate at all points according to any one of claims 3 to 7, characterized in that: The XY linear module (200) comprises an X-direction module (700) and a Y-direction module (710); the X-direction module (700) comprises a first slide rail and a first slider; the Y-direction module (710) comprises a second slide rail and a second slider; the first slide rail is arranged along the X direction, the first slider is slidably arranged on the first slide rail, the second slide rail is arranged along the Y direction, the second slide rail is fixed to the first slider, and the second slider is slidably arranged on the second slide rail; the first mounting plate (300) is horizontally fixed on the second slider.

10. The device for detecting the surface conductivity of a fuel cell plate at all points according to claim 9, characterized in that: The number of the first slide rails and the first sliding blocks are both two; the two first slide rails are fixed side by side and spaced apart on two opposite sides of the to-be-tested area (110), and the first sliding blocks on the two first slide rails move synchronously along the X direction.

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