Battery pole plate surface multi-point electric conduction detection device and system

Abstract

The utility model relates to the technical field of fuel cells, in particular to a multi-point electric conduction detection device and a multi-point electric conduction detection system for the surface of a battery pole plate. The battery pole plate surface multi-point electric conduction detection device comprises a workbench, a detection table, a first probe, a second probe and a resistance detection unit, the detection table is connected with the workbench, and the detection table is used for installing a to-be-detected battery pole plate; the first probe is arranged on the detection table, and the second probe is movably arranged on the workbench; wherein the resistance detection unit is electrically connected with the first probe and the second probe, so that when the first probe and the second probe are in contact with two different detection point positions on the battery pole plate, the resistance between the two detection point positions is detected. The battery plate surface multi-point conductive detection device can perform multi-point detection on the battery plate, so that resistance data of detection points in each area of the battery plate can be comprehensively collected, and the accuracy of qualification judgment of the battery plate can be improved.

Description

Technical Field

[0001] The utility model relates to the technical field of fuel cells, and more specifically, to a multi-point conductive detection device and system for the surface of a battery plate. Background Art

[0002] At present, before laser welding, after plating, and before being installed into a fuel cell stack, it is necessary to test the conductive performance of the battery plate. The existing conductive performance testing methods all measure the conductive performance of the plate surface by measuring the resistance value on the plate surface; that is, based on the voltammetry method, a fixed voltage (such as 24V) is applied between two detection points on the plate, and then the current between the two detection points is measured. By using R = U / I, that is, resistance = voltage / current, the surface resistance of the plate is calculated. The greater the resistance, the poorer the conductive performance, and vice versa.

[0003] The existing method for measuring the resistance of a battery plate uses the fixed-point method, which measures the resistance at two fixed detection points on the battery plate and uses this result as the surface resistance value of the plate; when the resistance at a certain point (area) on the battery plate changes, it will have different effects on the measured results depending on its position (regardless of size). Intuitively, when the position of the point where the resistance changes is farther from the measured point, the influence is smaller. Therefore, when the area where the resistance increases or decreases is far from the measured point, the result change is so small that it is impossible to judge the qualification of the plate, which further reduces the accuracy of the detection result. Summary of the Utility Model

[0004] The purpose of the utility model is to provide a multi-point conductive detection device and system for the surface of a battery plate, which can perform multi-point detection on the battery plate, avoid missing the detection of local areas where the resistance value of the battery plate changes, so as to comprehensively collect the resistance value data of the detection points in each area of the battery plate, thereby improving the accuracy of the detection result, and having high detection efficiency, so as to improve the accuracy of the qualification judgment of the battery plate.

[0005] The embodiments of the utility model are implemented as follows:

[0006] In a first aspect, the utility model provides a multi-point conductive detection device for the surface of a battery plate. The multi-point conductive detection device for the surface of a battery plate includes a workbench, a detection table, a first probe, a second probe, and a resistance detection unit;

[0007] The detection table is connected to the workbench, and the detection table is used for installing the battery plate to be detected; the first probe is arranged on the detection table, and the second probe is movably arranged on the workbench;

[0008] Among them, the resistance detection unit is electrically connected to the first probe and the second probe to detect the resistance between two detection points when the first probe and the second probe are in contact with two different detection points on the battery plate.

[0009] In an alternative embodiment, the first probe and the second probe are located on opposite sides of the battery plate, and the detection table is provided with a plurality of detection holes, and the first probe is assembled in one of the holes;

[0010] The multi-point conductive detection device for the battery plate surface further includes a pressure rod and a pressing cylinder; the pressing cylinder is connected to the detection table, the pressure rod is connected to the movable end of the pressing cylinder, and is used for pressing the battery plate;

[0011] The pressure rod and the first probe are located on opposite sides of the battery plate.

[0012] In an alternative embodiment, the multi-point conductive detection device for the battery plate surface further includes a first movable component, the first movable component is movably connected to the detection table, the first probe is connected to the first movable component, and the first movable component is used for driving the first probe to move in one or both of a first preset direction and a second preset direction;

[0013] Among them, the first preset direction is perpendicular to the second preset direction.

[0014] In an alternative embodiment, the detection table is provided with a chute along the first preset direction; the first movable component includes a first slider, a first cylinder and a first connecting block;

[0015] The first slider is slidably matched with the chute, the first cylinder is connected to the first slider, and the first probe is connected to the movable end of the first cylinder through the first connecting block;

[0016] Among them, the first cylinder is used for driving the first probe to move along the second preset direction to contact or separate from the battery plate.

[0017] In an alternative embodiment, along the first preset direction, the length of the chute is less than the length of the battery plate.

[0018] In an alternative embodiment, the multi-point conductive detection device for the battery plate surface further includes a second movable component, the second movable component is movably connected to the workbench, the second probe is connected to the second movable component, and the second movable component is used for driving the second probe to move in one or more of a first preset direction, a second preset direction and a third preset direction;

[0019] Among them, the first preset direction, the second preset direction and the third preset direction are perpendicular to each other in pairs.

[0020] In an alternative embodiment, the second movable component includes a driving unit, a second cylinder and a second connecting block;

[0021] The driving unit is connected to the workbench, and the second cylinder is connected to the driving unit. The driving unit is used to drive the second cylinder to move in one or more directions among the first preset direction and the third preset direction; the second probe is connected to the movable end of the second cylinder through the second connecting block;

[0022] Wherein, the second cylinder is used to drive the second probe to move in the second preset direction to contact or separate from the battery plate.

[0023] In an optional embodiment, the driving unit includes a first linear module, a movable frame, a second linear module and a second slider;

[0024] The first linear module is connected to the workbench; the movable frame is in transmission connection with the first linear module, and the first linear module is used to drive the movable frame to move in the third preset direction;

[0025] The second linear module is connected to the movable frame, the second slider is in transmission connection with the second linear module, and the second linear module is used to drive the second slider to move relative to the movable frame in the first preset direction; the second cylinder is connected to the second slider.

[0026] In an optional embodiment, the movable frame spans across the detection table in the first preset direction and is located directly above the detection table.

[0027] In a second aspect, the present utility model provides a multi-point conductive detection system for the surface of a battery plate. The multi-point conductive detection system for the surface of a battery plate includes the multi-point conductive detection device for the surface of a battery plate according to any one of the foregoing embodiments.

[0028] The beneficial effects of the embodiments of the present utility model include:

[0029] The multi-point conductive detection device for the surface of a battery plate includes a workbench, a detection table, a first probe, a second probe and a resistance detection unit; the detection table is connected to the workbench, and the detection table is used to mount the battery plate to be detected; the first probe is arranged on the detection table, and the second probe is movably arranged on the workbench; wherein, the resistance detection unit is electrically connected to the first probe and the second probe to detect the resistance between two different detection points on the battery plate when the first probe and the second probe contact two different detection points on the battery plate. The multi-point conductive detection device for the surface of a battery plate can perform multi-point detection on the battery plate, avoid missing detection of local areas with resistance value changes on the battery plate, so as to comprehensively collect the resistance value data of the detection points in each area of the battery plate, and further improve the accuracy of the detection result, and the detection efficiency is high, so as to improve the accuracy of the qualification judgment of the battery plate. Description of the Drawings

[0030] To more clearly illustrate the technical solutions of the embodiments of the present utility model, the following will briefly introduce the attached drawings required for use in the embodiments. It should be understood that the following attached drawings only show certain embodiments of the present utility model, and therefore should not be regarded as a limitation of the scope. For those of ordinary skill in the art, without creative efforts, other related attached drawings can also be obtained based on these attached drawings.

[0031] Figure 1 Structural schematic diagram of the multi-point conductive detection device on the surface of the battery plate in the first perspective of the embodiment of the present utility model;

[0032] Figure 2 Structural schematic diagram of the multi-point conductive detection device on the surface of the battery plate in the second perspective of the embodiment of the present utility model;

[0033] Figure 3 Structural schematic diagram of the multi-point conductive detection device on the surface of the battery plate in the third perspective of the embodiment of the present utility model;

[0034] Figure 4 Structural schematic diagram of the multi-point conductive detection device on the surface of the battery plate in the fourth perspective of the embodiment of the present utility model;

[0035] Figure 5 Structural schematic diagram of the battery plate, detection table and first probe in the embodiment of the present utility model;

[0036] Figure 6 Structural schematic diagram of the detection table and first probe in the embodiment of the present utility model;

[0037] Figure 7 Structural schematic diagram of the detection table in the embodiment of the present utility model;

[0038] Figure 8 Structural schematic diagram of the second probe assembled on the detection table in the embodiment of the present utility model;

[0039] Figure 9 For Figure 8 Partial schematic diagram at position A in

[0040] Figure 10 Structural schematic diagram of the first probe and the first moving component in the embodiment of the present utility model;

[0041] Figure 11 Structural schematic diagram of the second probe and the second moving component in the embodiment of the present utility model;

[0042] Figure 12 Structural schematic diagram of the second probe, the second slider and the second cylinder in the embodiment of the present utility model.

[0043] Icons: 200 - Multi - point conductive detection device for the surface of battery plates; 210 - Workbench; 220 - Detection table; 230 - First probe; 240 - Second probe; 100 - Battery plate; 221 - Strip - shaped connection hole; 250 - First movable assembly; 222 - Slide groove; 251 - First slider; 252 - First cylinder; 253 - First connection block; 260 - Second movable assembly; 261 - Driving unit; 262 - Second cylinder; 263 - Second connection block; 264 - First linear module; 265 - Movable frame; 266 - Second linear module; 267 - Second slider; 223 - Detection hole position; 224 - Pressing rod; 225 - Pressing cylinder. Detailed implementation mode

[0044] To make the objectives, technical solutions and advantages of the embodiments of the present utility model clearer, the technical solutions in the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are some, but not all, of the embodiments of the present utility model. Usually, the components of the embodiments of the present utility model described and illustrated in the accompanying drawings here can be arranged and designed in various different configurations.

[0045] Therefore, the following detailed description of the embodiments of the present utility model provided in the drawings is not intended to limit the scope of the claimed present utility model, but merely represents selected embodiments of the present utility model. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present utility model without creative efforts shall fall within the protection scope of the present utility model.

[0046] It should be noted that: Similar reference numerals and letters denote similar items in the following drawings. Therefore, once an item is defined in one drawing, it does not need to be further defined and explained in subsequent drawings.

[0047] In the description of the present utility model, it should be noted that the orientation or positional relationship indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings, or the orientation or positional relationship in which the product of the present utility model is usually placed when in use. It is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as a limitation of the present utility model. In addition, the terms "first", "second", "third", etc. are only used for descriptive distinction and cannot be understood as indicating or implying relative importance.

[0048] In addition, terms such as "horizontal" and "vertical" do not require the components to be absolutely horizontal or hanging vertically, but can be slightly inclined. For example, "horizontal" only means that its direction is more horizontal relative to "vertical", and does not mean that the structure must be completely horizontal, but can be slightly inclined.

[0049] In the description of the present invention, it should also be noted that, unless otherwise clearly specified and limited, the terms "set", "installed", "connected", and "connected" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two components. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific situations.

[0050] As an important way of hydrogen energy application, fuel cells have developed extremely rapidly in recent years. And the bipolar plate, as the core component of the fuel cell, occupies an extremely important position in the fuel cell. At present, it is necessary to test the electrical conductivity of the bipolar plate before laser welding, after plating, and before installing it into the fuel cell stack;

[0051] Before laser welding: After the metal bipolar plate is stamped and formed, impurities such as stamping oil, dust, iron filings, or oil stains will adhere to its surface, and these impurities will have a great impact on the welding quality of the bipolar plate, causing false welding and then leading to leakage at the connection of the bipolar plate; therefore, it is necessary to ensure a very high cleanliness of the bipolar plate surface before welding. So before welding, it is necessary to clean the bipolar plate, and after cleaning, it is necessary to judge the cleaning effect. And judging the surface cleanliness through the electrical conductivity of the bipolar plate surface is an effective and simple method, that is, the cleanliness of the bipolar plate surface can be indirectly judged by the electrical conductivity of the bipolar plate surface.

[0052] After plating: The final service place of the metal bipolar plate is an acidic environment, and metal materials are extremely easy to corrode in an acidic environment, which will not only affect the service life of the bipolar plate, but also the oxides generated on its surface will greatly reduce the electrical conductivity of the bipolar plate, thereby affecting the performance of the fuel cell stack; in addition, the material plated on the bipolar plate is a material with excellent electrical conductivity, which will further improve the electrical conductivity of the bipolar plate. Therefore, in order to improve the service life and electrical conductivity of the bipolar plate, the metal bipolar plate needs to be plated on the surface. After plating the bipolar plate, its appearance state cannot be distinguished by the naked eye from before plating. In order to detect whether the state of the plating reaches the qualified standard, judging through the electrical conductivity of the bipolar plate surface is an effective and simple method, and it can be judged whether the plating quality is qualified; if there are abnormalities, it is necessary to consider the state of the bipolar plate, the state of the equipment, and whether there are abnormalities in the plating material, that is, the qualified standard of the plating process can be directly judged by the electrical conductivity of the bipolar plate surface.

[0053] Before loading into the fuel cell stack: One of the key functions of the bipolar plate in a fuel cell is to conduct electricity, and the quality of its electrical conductivity directly affects the performance of the stack. Therefore, before loading the bipolar plate into the stack, the electrical conductivity of the bipolar plate can be tested.

[0054] Existing methods for testing electrical conductivity all measure the electrical conductivity of the surface of the bipolar plate by measuring the resistance value on the surface of the bipolar plate; that is, based on the voltammetry method, a fixed voltage (such as 24V) is applied between two detection points on the bipolar plate, and then the current between the two detection points is measured. By using R = U / I, that is, resistance = voltage / current, the surface resistance of the bipolar plate is calculated. The greater the resistance, the poorer the electrical conductivity, and vice versa. The existing method for measuring the resistance of the battery bipolar plate uses the fixed-point method, which measures the resistance at two fixed detection points on the battery bipolar plate and uses this result as the surface resistance value of the bipolar plate; when the resistance at a certain point (area) on the battery bipolar plate changes, it will have different effects on the measured results depending on its position (regardless of size). Intuitively, when the position of the point where the resistance changes is farther from the measured point, the influence is smaller. Therefore, when the area where the resistance increases or decreases is far from the measured point, the result change will be very small, making it impossible to judge the qualification of the bipolar plate, thus reducing the accuracy of the detection result.

[0055] For the above reasons, please refer to Figures 1-4 , this embodiment provides a multi-point electrical conductivity detection device 200 for the surface of a battery bipolar plate. The multi-point electrical conductivity detection device 200 for the surface of a battery bipolar plate includes a workbench 210, a detection table 220, a first probe 230, a second probe 240, and a resistance detection unit;

[0056] The detection table 220 is connected to the workbench 210, and the detection table 220 is used to mount the battery bipolar plate 100 to be detected; the first probe 230 is disposed on the detection table 220, and the second probe 240 is movably disposed on the workbench 210;

[0057] Among them, the resistance detection unit (not shown in the drawing) is electrically connected to the first probe 230 and the second probe 240 to detect the resistance between two different detection points when the first probe 230 and the second probe 240 are in contact with two different detection points on the battery bipolar plate 100.

[0058] Please refer to Figures 1-4 , the working principle of the multi-point electrical conductivity detection device 200 for the surface of a battery bipolar plate is as follows:

[0059] The multi-point electrical conductivity detection device 200 for the surface of a battery bipolar plate includes a workbench 210, a detection table 220, a first probe 230, a second probe 240, and a resistance detection unit;

[0060] Among them, the first probe 230 is disposed on the detection stage 220, and the second probe 240 is movably disposed on the workbench 210; thus, during the detection process, the relative positions of the first probe 230 and the second probe 240 with respect to the detection stage 220 can be adjusted by the movement of the second probe 240 relative to the workbench 210, and then the two detection points on the battery plate 100 can be adjusted, so as to realize multi-point and comprehensive resistance detection of the battery plate 100;

[0061] It should be noted that the functions of the first probe 230 and the second probe 240 are to contact the battery plate 100, and based on the voltammetry method, a fixed voltage is applied between two detection points on the plate through the first probe 230 and the second probe 240, and then the current between the two detection points is measured by the resistance detection unit, and then the surface resistance between the two detection points is calculated;

[0062] Therefore, the multi-point conductive detection device 200 for the battery plate surface can perform multi-point detection on the battery plate 100, avoid missing detection of local areas where the resistance value of the battery plate 100 changes, so as to comprehensively collect the resistance value data of the detection points in each area of the battery plate 100, and then improve the accuracy of the detection result, and the detection efficiency is high, so as to improve the accuracy of the qualification judgment of the battery plate 100.

[0063] Please refer to Figures 1-7 , in this embodiment, as can be seen from the above, through the multi-point conductive detection device 200 for the battery plate surface, multi-point detection of the battery plate 100 can be performed. Therefore, during the detection process, it is necessary to adjust the position of one or both of the first probe 230 and the second probe 240 relative to the battery plate 100. Thus, in order to keep the position of the battery plate 100 relative to the detection stage 220 during this process, the detection stage 220 is provided with a plurality of strip-shaped connection holes 221, and the strip-shaped connection holes 221 are used for installing positioning pins for fixing the battery plate 100. That is, in this way, the battery plate 100 can be installed on the detection stage 220 through the positioning pins, and during the installation process, the position of the positioning pins in the strip-shaped connection holes 221 can be adjusted, so that the detection stage 220 can be adapted to the installation of battery plates 100 of different specifications and sizes, so that the multi-point conductive detection device 200 for the battery plate surface can be adapted to the detection of battery plates 100 of different specifications and sizes, thereby improving its detection versatility.

[0064] Furthermore, in this embodiment, when the first probe 230 and the second probe 240 detect the battery plate 100, they can measure two detection points on the same side of the battery plate 100, or measure two detection points on opposite sides of the battery plate 100;

[0065] Please refer to Figures 1-9 , and the method of measuring two detection points located on the opposite sides of the battery plate 100 through the first probe 230 and the second probe 240 will be described below:

[0066] The first probe 230 and the second probe 240 are arranged on opposite sides of the battery plate 100. Moreover, since the second probe 240 is movably connected to the workbench 210, when installing the first probe 230, a plurality of detection holes 223 can be configured on the detection table 220, and the first probe 230 can be assembled into one of the holes. Thus, when both the first probe 230 and the second probe 240 are in contact with the battery plate 100, the corresponding measurement work is completed. It should be noted that during the measurement process, the first probe 230 can be located at different detection holes 223 to adjust the detection position of the first probe 230;

[0067] In addition, on this basis, the multi-point conductive detection device 200 for the battery plate surface can further include a pressing rod 224 and a pressing cylinder 225; the pressing cylinder 225 is connected to the detection table 220, the pressing rod 224 is connected to the movable end of the pressing cylinder 225, and is used to press the battery plate 100; the pressing rod 224 and the first probe 230 are located on opposite sides of the battery plate 100. Through the arrangement of the pressing rod 224 and the pressing cylinder 225, the battery plate 100 can be pressed, thereby improving the stability during the detection process. It should be noted that when configuring the pressing cylinder 225, it can slide relative to the detection table 220 to adjust its pressing position.

[0068] The method of measuring two detection points located on the same side of the battery plate 100 through the first probe 230 and the second probe 240 will be described below:

[0069] In this embodiment, when realizing multi-point detection of the battery plate 100, the first probe 230 is movably arranged on the detection table 220, and the second probe 240 is movably arranged on the workbench 210. Based on this, in order to enable the first probe 230 to move relative to the detection table 220 and the second probe 240 to move relative to the workbench 210, movable structures such as a robotic arm, a linear motion module, and a lead screw guide module can be adopted;

[0070] And in this embodiment, please refer to Figures 1-10, then the multi-point conductive detection device 200 for the battery plate surface further includes a first movable component 250. The first movable component 250 is movably connected to the detection table 220. The first probe 230 is connected to the first movable component 250, and the first movable component 250 is used to drive the first probe 230 to move in one or two directions of a first preset direction and a second preset direction; wherein, the first preset direction is perpendicular to the second preset direction. It should be noted that, in this embodiment, the first preset direction is the X direction, the second preset direction is the X direction, and the third preset direction is the Y direction.

[0071] Specifically, the first movable component 250 includes a first slider 251, a first cylinder 252 and a first connecting block 253; and the detection table 220 is provided with a sliding groove 222 along the first preset direction; the first slider 251 is slidably matched with the sliding groove 222, the first cylinder 252 is connected to the first slider 251, and the first probe 230 is connected to the movable end of the first cylinder 252 through the first connecting block 253;

[0072] Wherein, the first cylinder 252 is used to drive the first probe 230 to move along the second preset direction to contact or separate from the battery plate 100.

[0073] Thus, through such a setting method, the position of the first probe 230 relative to the detection table 220 can be adjusted by adjusting the position of the first slider 251 relative to the sliding groove 222. And along the first preset direction, the length of the sliding groove 222 is less than the length of the battery plate 100. Such a setting method is because both the first probe 230 and the second probe 240 need to contact the battery plate 100 to measure the resistance value. Therefore, on the basis of setting the first probe 230 and the second probe 240, on the basis that the moving range of the second probe 240 covers all the areas to be detected of the battery plate 100, the moving range of the first probe 230 relative to the battery plate 100 can be appropriately reduced.

[0074] Furthermore, please refer to Figures 1-12 , when the second probe 240 is made movable relative to the workbench 210, the multi-point conductive detection device 200 for the battery plate surface further includes a second movable component 260. The second movable component 260 is movably connected to the workbench 210, and the second probe 240 is connected to the second movable component 260;

[0075] The second movable component 260 is used to drive the second probe 240 to move in one or more directions among a first preset direction, a second preset direction, and a third preset direction. Thus, through such a setting method, the movement range of the second probe 240 can cover all the areas to be detected on the battery plate 100, that is, the second probe 240 can contact all the detection points on the battery plate 100. Among them, the first preset direction, the second preset direction, and the third preset direction are perpendicular to each other in pairs.

[0076] Specifically, when configuring the second movable component 260, the second movable component 260 includes a driving unit 261, a second air cylinder 262, and a second connecting block 263.

[0077] The driving unit 261 is connected to the workbench 210, the second air cylinder 262 is connected to the driving unit 261, and the driving unit 261 is used to drive the second air cylinder 262 to move in one or more directions among the first preset direction and the third preset direction. The second probe 240 is connected to the movable end of the second air cylinder 262 through the second connecting block 263.

[0078] Among them, the second air cylinder 262 is used to drive the second probe 240 to move in the second preset direction to contact or move away from the battery plate 100.

[0079] The driving unit 261 includes a first linear module 264, a movable frame 265, a second linear module 266, and a second slider 267.

[0080] The first linear module 264 is connected to the workbench 210. The movable frame 265 is in transmission connection with the first linear module 264, and the first linear module 264 is used to drive the movable frame 265 to move in the third preset direction.

[0081] The second linear module 266 is connected to the movable frame 265, the second slider 267 is in transmission connection with the second linear module 266, and the second linear module 266 is used to drive the second slider 267 to move relative to the movable frame 265 in the first preset direction. The second air cylinder 262 is connected to the second slider 267.

[0082] On the basis of the above structure, in order to enable the movement range of the second probe 240 to fully cover the battery plate 100, therefore, the movable frame 265 spans across the detection table 220 in the first preset direction and is located directly above the detection table 220.

[0083] Through the settings of the above-mentioned first linear module 264 and second linear module 266, the movement accuracy of the second probe 240 in space can be improved, thereby improving the accuracy of positioning and detecting the corresponding detection points.

[0084] In summary, please refer to Figures 1-12, the steps for the multi-point conductivity detection device 200 to detect the battery plate 100 are as follows:

[0085] Install the battery plate 100 on the detection table 220, and determine at least one set of detection points. Each set of detection points includes two detection points, and the first probe 230 and the second probe 240 are respectively in contact with the two detection points;

[0086] Adjust the position of the first slider 251 so that the first probe 230 is relatively directly above its corresponding detection point, and then the first cylinder 252 can drive the first probe 230 to move along the second preset direction, so that the first probe 230 contacts the battery plate 100 and plays a role in pressing the battery plate 100 to maintain its position;

[0087] Then, drive the movable frame 265 to move along the third preset direction through the first linear module 264, and drive the second slider 267 to move relative to the movable frame 265 along the first preset direction through the second linear module 266, so as to adjust the spatial position of the second probe 240 connected to the second slider 267, so that the second probe 240 is relatively directly above its corresponding detection point;

[0088] Subsequently, drive the second probe 240 to move along the second preset direction through the second cylinder 262 to contact its corresponding detection point;

[0089] After the resistance detection unit works, the resistance between the two detection points can be measured;

[0090] Then, if multiple sets of detection points are determined, the position of the first probe 230 or the second probe 240 can be adjusted accordingly.

[0091] Please refer to Figures 1-12, based on the above multi-point conductive detection device 200 for the surface of the battery plate, this embodiment also provides a multi-point conductive detection system for the surface of the battery plate 100. The multi-point conductive detection system for the surface of the battery plate 100 includes the multi-point conductive detection device 200 for the surface of the battery plate in any one of the foregoing embodiments. By using the multi-point conductive detection device 200 for the surface of the battery plate, the multi-point conductive detection system for the surface of the battery plate 100 can perform multi-point detection on the battery plate 100, and can accurately judge the qualification of the battery plate 100 based on the detection data of the multi-point conductive detection device 200 for the surface of the battery plate. At the same time, based on the analysis of the detection data, the abnormal resistance area of the battery plate 100 can be obtained, so that the defective area of the battery plate 100 can be determined, and then it can be reflected that there are coating defects or incomplete cleaning in a certain area of the battery plate 100. It can also measure a large amount of data, record it in the database, and obtain the normal resistance range under each group of positions. In subsequent use, it can directly analyze through big data to determine whether the value is qualified.

[0092] The above are only the preferred embodiments of the present invention and are not intended to limit the present invention. For those skilled in the art, the present invention can have various modifications and changes. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention shall be included within the protection scope of the present invention.

Claims

1. A multi-point conductivity detection device for a battery plate surface, characterized in that: The multi-point conductivity detection device on the surface of the battery plate comprises a workbench, a detection table, a first probe, a second probe and a resistance detection unit; The testing platform is connected to the working platform, and the testing platform is used to install the battery plate to be tested; the first probe is arranged on the testing platform, and the second probe is movably arranged on the working platform; The resistance detection unit is electrically connected to the first probe and the second probe, so as to detect the resistance between two detection points when the first probe and the second probe are in contact with two different detection points on the battery plate.

2. The battery plate surface multi-point conductivity detection device according to claim 1, characterized in that: The first probe and the second probe are located on opposite sides of the battery plate, and the detection platform is configured with a plurality of detection holes, and the first probe is installed in one of the holes; The battery plate surface multi-point conductivity detection device also includes a pressure rod and a pressure holding cylinder; the pressure holding cylinder is connected to the detection platform, and the pressure rod is connected to the movable end of the pressure holding cylinder and is used to press the battery plate; The pressure rod and the first probe are located on two opposite sides of the battery plate.

3. The multi-point conductivity detection device for the battery plate surface according to claim 1, characterized in that: The battery plate surface multi-point conductivity detection device further includes a first movable component, which is movably connected to the detection platform, the first probe is connected to the first movable component, and the first movable component is used to drive the first probe to move in one or both of a first preset direction and a second preset direction; Wherein, the first preset direction is perpendicular to the second preset direction.

4. The battery plate surface multi-point conductivity detection device according to claim 3, characterized in that: The testing platform is provided with a slide groove along the first preset direction; the first movable component comprises a first slide block, a first cylinder and a first connecting block; The first slider is slidably matched with the slide groove, the first cylinder is connected to the first slider, and the first probe is connected to the movable end of the first cylinder through the first connecting block; Wherein, the first cylinder is used to drive the first probe to move along the second preset direction so as to contact with the battery plate or move away from the battery plate.

5. The battery plate surface multi-point conductivity detection device according to claim 4, characterized in that: Along the first preset direction, the length of the slide groove is smaller than the length of the battery plate.

6. The multi-point conductivity detection device for the battery plate surface according to any one of claims 1 to 5, characterized in that: The battery plate surface multi-point conductivity detection device further includes a second movable component, which is movably connected to the workbench, and the second probe is connected to the second movable component, and the second movable component is used to drive the second probe to move along one or more of the first preset direction, the second preset direction and the third preset direction; The first preset direction, the second preset direction and the third preset direction are perpendicular to each other.

7. The battery plate surface multi-point conductivity detection device according to claim 6, characterized in that: The second movable component comprises a driving unit, a second cylinder and a second connecting block; The driving unit is connected to the workbench, the second cylinder is connected to the driving unit, and the driving unit is used to drive the second cylinder to move along one or more of the first preset direction and the third preset direction; the second probe is connected to the movable end of the second cylinder through the second connecting block; The second cylinder is used to drive the second probe to move along a second preset direction so as to contact the battery plate or move away from the battery plate.

8. The battery plate surface multi-point conductivity detection device according to claim 7, characterized in that: The driving unit includes a first linear module, a movable frame, a second linear module and a second slide block; The first linear module is connected to the workbench; the movable frame is transmission-connected to the first linear module, and the first linear module is used to drive the movable frame to move along the third preset direction; The second linear module is connected to the movable frame, the second slider is transmission-connected to the second linear module, and the second linear module is used to drive the second slider to move relative to the movable frame along the first preset direction; the second cylinder is connected to the second slider.

9. The battery plate surface multi-point conductivity detection device according to claim 8, characterized in that: The movable frame spans across the detection platform along the first preset direction and is located directly above the detection platform.

10. A multi-point conductivity detection system for a battery plate surface, characterized in that: The battery plate surface multi-point conductivity detection system comprises a battery plate surface multi-point conductivity detection device as described in any one of claims 1-9.

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