Measurement device and measurement method

Abstract

A measurement device and a measurement method. The measurement device comprises a base, a scanning frame slidably connected to the base in a left-right direction, a first measurement module and a second measurement module that are slidably connected to front and rear sides of the scanning frame in the left-right direction, respectively, a first driving assembly disposed on the scanning frame, and a second driving assembly disposed on the base. The first driving assembly is used for driving the first measurement module and the second measurement module, and the second driving assembly is used for driving the scanning frame to drive the first measurement module and the second measurement module to move. By means of mounting the first measurement module and the second measurement module on the scanning frame, the distance between the two measurement modules in the left-right direction can be adjusted on the basis of the moving speed of the scanning frame, the speed of an object under test on a belt, and the fixed distance between the two measurement modules in a front-rear direction, so that inspection tracks of the two measurement modules remain coincident, secondary inspection and measurement of the same position of the object under test are achieved, and the accuracy and reliability of inspection results are improved.

Description

Measuring device and measuring method TECHNICAL FIELD

[0001] The present application relates to the technical field of detection, in particular to a measuring device and a measuring method. BACKGROUND

[0002] Taking a lithium ion battery as an example, in the coating process of the battery pole piece, in order to detect the coating quality, multiple measuring devices are usually used to perform multi-pass scanning detection on the coating quality. When scanning, the pole piece is in a one-way motion state, and the measuring device reciprocally scans from one side of the pole piece to the other side of the pole piece along a direction perpendicular to the motion direction of the pole piece. In order to ensure the accuracy and reliability of the detection results, it is also necessary to ensure that the detection track of the last pass coincides with the detection track of the previous pass. However, in actual application, some existing solutions are prone to deviation or low coincidence between the detection track of the last pass and the detection track of the previous pass.

[0003] SUMMARY

[0004] The technical problem solved by the present application is to provide a measuring device and a measuring method, which can ensure the coincidence of the detection tracks of the previous pass and the last pass.

[0005] In a first aspect, a measuring device is provided in an embodiment, comprising:

[0006] a base;

[0007] a scanning frame slidingly connected to the base in a left-right direction;

[0008] a first measuring module slidingly connected to the front side of the scanning frame in the left-right direction;

[0009] a second measuring module slidingly connected to the rear side of the scanning frame in the left-right direction;

[0010] a first driving assembly provided on the scanning frame; a power end of the first driving assembly is coupled to the first measuring module and the second measuring module, and is used to drive the first measuring module and the second measuring module to move, so as to adjust the interval between the first measuring module and the second measuring module in the left-right direction;

[0011] a second driving assembly provided on the base; a power end of the second driving assembly is coupled to the scanning frame, and is used to drive the scanning frame to reciprocally move.

[0012] According to a second aspect, a measuring method is provided in an embodiment, which is implemented by using the measuring device of the first aspect, and comprises a scanning measurement step, which comprises:

[0013] The following parameters are obtained: the belt speed V1 of the object being measured, the moving speed V2 of the scanning frame, the first distance D1 between the first measurement module and the second measurement module in the front-back direction, and the second distance D2 between the first measurement module and the second measurement module in the left-right direction.

[0014] Calculate the first time difference T1 and the second time difference T2. The first time difference T1 satisfies T1 = D1 / V1, and the second time difference T2 satisfies T2 = D2 / V2.

[0015] Determine whether the first time difference T1 and the second time difference T2 are equal;

[0016] If the first time difference T1 and the second time difference T2 are not equal, the first driving component adjusts the second spacing D2;

[0017] If the first time difference T1 is equal to the second time difference T2, the first driving component stops working.

[0018] In one embodiment, a position swapping step is further included, the position swapping step comprising:

[0019] After the scanning frame moves the first measurement module and the second measurement module out of the object being measured, the first driving component drives the first measurement module and the second measurement module to move so that the first measurement module is located closer to the object being measured than the second measurement module.

[0020] The measuring device according to the above embodiment includes a base, a scanning frame slidably connected to the base in a left-right direction, a first measuring module and a second measuring module slidably connected to the front and rear sides of the scanning frame in a left-right direction respectively, a first driving component disposed on the scanning frame, and a second driving component disposed on the base. The first driving component drives the first measuring module and the second measuring module, and the second driving component drives the scanning frame to move the first measuring module and the second measuring module. By mounting the first measuring module and the second measuring module on the scanning frame, on the one hand, the distance between the two measuring modules in the left-right direction can be adjusted according to the moving speed of the scanning frame, the conveyor speed of the object being measured, and the fixed distance between the two measuring modules in the front-back direction, so that the detection trajectories of the two measuring modules keep overlapping, realizing secondary detection and measurement of the same position of the object being measured, and improving the accuracy and reliability of the detection results. On the other hand, by using the scanning frame to drive multiple measuring modules to move relative to the object being measured and perform reciprocating scanning, the structural architecture of the device is more compact, the accuracy requirements for the motion coordination between the measuring modules are lower, which helps to reduce the configuration cost and measurement cost of the device. Attached Figure Description

[0021] Figure 1 is a three-dimensional structural schematic diagram of a measuring device according to an embodiment.

[0022] Figure 2 is a schematic diagram of the planar structure of a measuring device according to an embodiment from a top-down perspective.

[0023] Figure 3 is a schematic diagram of the planar structure of a measuring device according to an embodiment, viewed from the front.

[0024] Figure 4 is a schematic diagram of the planar structure of a measuring device according to an embodiment from a side view.

[0025] Figure 5 is a three-dimensional structural diagram of a measuring device according to an embodiment, omitting the base.

[0026] Figure 6 is a simplified diagram of the velocity-displacement relationship of a moving part in a measuring device according to one embodiment.

[0027] Figure 7 is a schematic diagram of the system architecture of a measuring device according to one embodiment.

[0028] Figure 8 is a schematic diagram of the flow principle of a measurement method according to one embodiment.

[0029] In the diagram: 10, base; 11, frame; 12, vibration damping block; 13, idler roller; 20, scanning frame; 20a, opening; 21, slide rail; 30, first drive assembly; 31, first drive component; 32, transmission shaft; 33, first synchronous belt assembly; 34, second synchronous belt assembly; 35, reduction ratio structure; 40, second drive assembly; 41, second drive component; 42, transmission lead screw; 50, first measuring module; 51, first measuring assembly; 52, second measuring assembly; 53, slider; 60, second measuring module; 61, third measuring assembly; 62, fourth measuring assembly; 70, third measuring module; 81, control device; 82, first speed detection component; 83, second speed detection component; A, battery electrode. Detailed Implementation

[0030] The present application will now be described in further detail with reference to the accompanying drawings and specific embodiments. Similar elements in different embodiments are referred to by related similar element reference numerals. In the following embodiments, many details are described to facilitate a better understanding of the present application. However, those skilled in the art will readily recognize that some features may be omitted in different situations, or may be replaced by other elements, materials, or methods. In some cases, certain operations related to the present application are not shown or described in the specification. This is to avoid obscuring the core parts of the present application with excessive description. For those skilled in the art, detailed description of these related operations is not necessary; they can fully understand the related operations based on the description in the specification and general technical knowledge in the art.

[0031] Furthermore, the features, operations, or characteristics described in the specification can be combined in any suitable manner to form various embodiments. At the same time, the steps or actions in the method description can be rearranged or adjusted in a manner obvious to those skilled in the art. Therefore, the various orders in the specification and drawings are only for the clear description of a particular embodiment and do not imply a necessary order, unless otherwise stated that a particular order must be followed.

[0032] The serial numbers assigned to components in this document, such as "first" and "second," are used only to distinguish the described objects and have no sequential or technical meaning. The terms "connection" and "linkage" used in this application, unless otherwise specified, include both direct and indirect connections (linkages).

[0033] Please refer to Figures 1 to 7. This application provides a measuring device, including a base 10, a scanning frame 20, a first driving component 30, a second driving component 40, a first measuring module 50, a second measuring module 60, a control component, and other functional components as needed.

[0034] The following mainly uses battery electrode A as the object under test. Taking the scanning detection and measurement of the areal density, thickness, surface defects, etc. of battery electrode A as an example, the structural architecture and implementation principle of the measuring device will be explained. However, it should be noted that battery electrode A is only a specific application of the measuring device. The measuring device can also be used to detect and measure film materials or other materials on the conveyor belt.

[0035] To describe the measuring device more clearly and in detail, this paper defines the left-right, front-back, and up-down directions based on the device's structure or working principle. In some scenarios, the left-right, front-back, and up-down directions form a spatial rectangular coordinate system with the measuring device as the reference. In terms of the front-back direction, the side of the measuring device used for the battery electrode A to enter is called the front, and the side used for the battery electrode A to move out is called the back. It can also be understood that when the measuring device is used, the battery electrode A passes through the measuring device roughly along the front-back direction.

[0036] Please refer to Figures 1 to 5. The first measurement module 50 and the second measurement module 60 are mainly used to detect and measure the battery electrode A. They can have the same detection and measurement functions or different detection and measurement functions. The first measurement module 50 is located on the front side of the scanning frame 20 and is slidably connected to the scanning frame 20 in a manner that allows it to move in the left and right direction. The second measurement module 60 is located on the rear side of the scanning frame 20 and is slidably connected to the scanning frame 20 in a manner that allows it to move in the left and right direction.

[0037] For example, referring to Figure 5, linear module structures extending in the left-right direction are provided between the front side of the scanning frame 20 and the first measurement module 50, and between the rear side of the scanning frame 20 and the second measurement module 60. The linear module structures establish a stable linear sliding connection between the scanning frame 20 and the first measurement module 50, and between the scanning frame 20 and the second measurement module 60, so as to ensure the alignment, smoothness and stability of the movement of the first measurement module 50 and the second measurement module 60 relative to the scanning frame 20.

[0038] By arranging the first measurement module 50 and the second measurement module 60 on opposite sides of the scanning frame 20 in the front-back direction, the first measurement module 50 and the second measurement module 60 can maintain a fixed distance in the front-back direction based on the scanning frame 20, so as to realize the detection and measurement of the battery electrode A as it passes through the first measurement module 50 and the second measurement module 60 in the front-back direction.

[0039] Please refer to Figures 1 to 3 and Figure 5. The first drive assembly 30 is disposed on the scanning frame 20, and the power end of the first drive assembly 30 is coupled to the first measurement module 50 and the second measurement module 60 respectively. The first drive assembly 30 is mainly used to drive the first measurement module 50 and the second measurement module 60 to move on the scanning frame 20 (e.g., moving towards each other, moving away from each other, moving at a different speed, etc.). On the one hand, it makes the distance between the first measurement module 50 and the second measurement module 60 in the left and right direction adjustable, so as to support the first measurement module 50 and the second measurement module 60 to keep their detection trajectories on the battery electrode A overlapping. On the other hand, by changing the relative positions of the first measurement module 50 and the second measurement module 60 in the left and right direction, it can be ensured that the first measurement module 50 can always detect and measure the battery electrode A before the second measurement module 60.

[0040] For example, the first driving component 30 can adopt a synchronous driving structure. By driving the first measurement module 50 and the second measurement module 60 to move synchronously on the scanning frame 20, the response speed of the spacing adjustment between the first measurement module 50 and the second measurement module 60 in the left and right directions can be effectively improved, thus providing support for improving detection and measurement efficiency.

[0041] Of course, the first driving component 30 can also adopt other suitable driving structure forms, as long as the distance between the first measuring module 50 and the second measuring module 60 in the left and right directions can be adjusted.

[0042] In other embodiments, one of the first measurement module 50 and the second measurement module 60 is fixedly mounted on the scanning frame 20, and the other is coupled to the power end of the first driving component 30; for example, the second measurement module 60 is fixedly mounted on the scanning frame 20, and the power end of the first driving component 30 is coupled to the first measurement module 50; thus, by driving the first measurement module 50 to move closer to or further away from the second measurement module 60 in the left-right direction on the scanning frame 20 by the first driving component 30, the distance between the first measurement module 50 and the second measurement module 60 in the left-right direction can also be adjusted.

[0043] Please refer to Figures 1 to 3 and Figure 5. The scanning frame 20 and the second drive assembly 40 are both mounted on the base 10. The scanning frame 20 is slidably connected to the base 10 so as to be able to move on the base 10 in the left and right directions. The power end of the second drive assembly 40 is coupled to the scanning frame 20 and is mainly used to drive the scanning frame 20 to move the first measurement module 50, the second measurement module 60, the first drive assembly 30, etc., reciprocating on the base 10 in the left and right directions, so that the first measurement module 50 and the second measurement module 60 reciprocate scanning the battery electrode A while following the movement of the scanning frame 20.

[0044] For example, please refer to Figure 5. A linear module structure extending in the left-right direction is arranged between the scanning frame 20 and the base 10. The linear module structure ensures the alignment, stability and smoothness of the movement of the scanning frame 20. The second drive component 30 can adopt a related structure that can output linear power, such as a lead screw drive mechanism, a cylinder drive mechanism, etc.

[0045] Please refer to Figures 6 and 7 and in conjunction with Figure 2. The control assembly includes a control device 81, a first speed detection element 82, and a second speed detection element 83. The first drive assembly 30, the second drive assembly 40, the first speed detection element 82, and the second speed detection element 83 are electrically connected to the control device 81. The first speed detection element 82 is mainly used to detect the conveyor speed V1 of the battery electrode A, and the second speed detection element 83 is mainly used to detect the moving speed V2 of the scanning frame 20.

[0046] The first speed detection element 82 and the second speed detection element 83 can be sensors such as speed sensors or other functional devices that can realize speed detection. The first speed detection element 82 and the second speed detection element 83 can be set in a suitable position according to the structure of the measuring equipment and the application environment. For example, the second speed detection element 83 can be set on the scanning frame 20 or the base 10.

[0047] The control device 81 can be understood as a collection of related functional devices that manage and regulate speed detection components, drive components, measurement modules, etc. For example, the control device 81 may include components such as controllers and processors. The control device 81 is mainly used to calculate and determine whether the first time difference T1 and the second time difference T2 are equal based on the conveyor speed V1, the moving speed V2, the first gap D1 and the second gap D2, etc. The first gap D1 is the distance between the first measurement module 50 and the second measurement module 60 in the front-back direction, and the second gap D2 is the distance between the first measurement module 50 and the second measurement module 60 in the left-right direction. The first time difference T1 satisfies T1 = D1 / V1, and the second time difference T2 satisfies T2 = D2 / V2.

[0048] When the first time difference T1 and the second time difference T2 are not equal, the control device 81 can drive the first measurement module 50 and the second measurement module 60 to move (e.g., move closer to each other, move further away from each other, move at a different speed, etc.) through the first drive component 30, so as to adjust the second distance D2 to make the first time difference T1 and the second time difference T2 equal, thereby ensuring that the detection trajectories of the first measurement module 50 and the second measurement module 60 on the battery electrode A remain aligned.

[0049] Firstly, by mounting the first measurement module 50 and the second measurement module 60 on the scanning frame 20 and driving the two measurement modules to move on the scanning frame 20 with the help of the first driving component 30, the second distance D2 between the two measurement modules in the left and right directions can be adjusted in a timely manner according to data information such as the conveying speed V1 of the battery electrode A, the moving speed V2 of the scanning frame 20, the first distance D1 between the two measurement modules in the front-back direction, and the preset formula relationship. This ensures that the same position (or part) of the battery electrode A is detected and measured by the first measurement module 50 and the second measurement module 60 in succession during the conveying and scanning process of the battery electrode A and the scanning frame 20 driving the measurement modules to move and scan, (i.e., ensuring that the front detection trajectory coincides with the back detection trajectory). This enables secondary detection and measurement of the same position of the battery electrode A (e.g., two areal density tests at the same position, and then tests of different items at the same position), thereby effectively improving detection efficiency and the accuracy and reliability of detection results, or enriching the detection items.

[0050] Secondly, by utilizing the structural feature that the first measurement module 50 and the second measurement module 60 are slidably connected to the scanning frame 20, the relative positions of the first measurement module 50 and the second measurement module 60 in the left-right direction can be adjusted by the first driving component 30 to realize the interchange of their positions, ensuring that the first measurement module 50 can always enter the battery electrode A before the second measurement module 60 during reciprocating scanning, thereby maintaining the implementation of the two scanning detections.

[0051] Thirdly, in related technologies, multiple measuring devices are usually arranged sequentially along the carrying direction of the battery electrode A and respectively mounted on the equipment frame. This often places high demands on the motion control accuracy of the measuring devices and the coordination accuracy between multiple measuring devices, thereby greatly increasing the equipment configuration cost and testing cost. In contrast, in this application, the first drive component 30, the first measuring module 50, and the second measuring module 60 are centrally mounted on the scanning frame 20. The second drive component 40 drives the scanning frame 20 to move multiple measuring modules, thereby realizing reciprocating scanning and testing operations. Furthermore, by adjusting the spacing between the measuring modules in a timely manner, the front and rear detection trajectories can be ensured to coincide. In this way, not only is the structural architecture of the measuring equipment more compact, but the requirements for motion control accuracy of the measuring modules and scanning frame 20 are also lower, which helps to reduce the equipment configuration cost and measurement cost.

[0052] In some embodiments, all or part of the control component is a functional component used in conjunction with the measuring equipment. That is, one or more of the control device 81, the first speed detection element 82, and the second speed detection element 83 are not part of the measuring equipment, but are functional devices or components used in conjunction with the measuring equipment for scanning and detection.

[0053] It should be noted that the bold solid line with double arrows in Figure 6 can be interpreted as the moving direction of the scanning frame 20, the bold solid line with a single arrow in Figure 6 can be interpreted as the carrying direction of the battery electrode A, the bold dashed line with a single arrow in Figure 6 represents the moving path of the first measurement module 50 and the second measurement module 60 following the scanning frame 20, the dashed line with arrows in Figure 7 can be interpreted as the transmission direction of the data signal, and the solid line with arrows in Figure 7 can be interpreted as the direction of power output.

[0054] In one embodiment, referring to Figures 3 to 5, the first measurement module 50 includes a first measurement component 51 and a second measurement component 52 that cooperate with each other. The first measurement component 51 and the second measurement component 52 are arranged opposite each other in the vertical direction to form a channel between the first measurement component 51 and the second measurement component 52 for the battery electrode A to pass through the first measurement module 50. At the same time, the first measurement component 51 and the second measurement component 52 are slidably connected to the front side of the scanning frame 20, and the power end of the first drive component 30 is coupled to the first measurement component 51 and the second measurement component 52, so that the first drive component 30 can drive the first measurement component 51 and the second measurement component 52 to move synchronously and in the same direction in the left and right direction on the scanning frame 20, ensuring that the relative positions of the first measurement component 51 and the second measurement component 52 in the vertical direction do not change.

[0055] Based on the same structural and functional requirements, the second measurement module 60 includes a third measurement component 61 and a fourth measurement component 62 that cooperate with each other. The third measurement component 61 and the fourth measurement component 62 are arranged opposite each other in the vertical direction to form a channel between them for the battery electrode A to pass through the second measurement module 60. At the same time, the third measurement component 61 and the fourth measurement component 62 are slidably connected to the rear side of the scanning frame 20, and the power end of the first drive component 30 is coupled to the third measurement component 61 and the fourth measurement component 62 so that the first drive component 30 can drive the two to move synchronously and in the same direction in the left and right directions on the scanning frame 20, ensuring that the relative positions of the third measurement component 61 and the fourth measurement component 62 in the vertical direction do not change.

[0056] Please refer to Figure 4. With the cooperation of the first measuring component 51 and the second measuring component 52, the detection and measurement of the battery electrode A can be completed when the battery electrode A passes through the first measuring module 50. With the cooperation of the third measuring component 61 and the fourth measuring component 62, the detection and measurement of the battery electrode A can be completed when the battery electrode A passes through the second measuring module 60.

[0057] In some embodiments, both the first measurement module 50 and the second measurement module 60 have the function of detection and measurement through transmitting and receiving lines; specifically, one of the first measurement component 51 and the second measurement component 52 is a first radiation emitting device and the other is a first radiation receiving device, and one of the third measurement component 61 and the fourth measurement component 62 is a second radiation emitting device and the other is a second radiation receiving device.

[0058] Taking the first measurement module 50 as an example, as shown in Figure 4, when the battery electrode A passes through the first measurement module 50 between the first measurement component 51 and the second measurement component 52, a certain intensity of radiation (e.g., X-rays, beta rays) can be emitted by the first radiation emitting device. After the radiation penetrates the battery electrode A and is received by the first radiation receiving device, the component content of the battery electrode A can be calculated based on the radiation intensity, thereby completing the areal density detection of the battery electrode A in a non-contact, non-destructive testing manner. Furthermore, by adjusting the second distance D2 between the first measurement module 50 and the second measurement module 60 according to the first time difference T1 and the second time difference T2, it can be ensured that the detection trajectory of the first measurement module 50 and the detection trajectory of the second measurement module 60 coincide on the battery electrode A, thereby achieving two areal density measurements at the same location (or part) of the battery electrode A, effectively improving the accuracy and reliability of the areal density detection results.

[0059] Of course, the first measurement module 50 and the second measurement module 60 can use the same or different rays to meet the actual detection needs; for example, the rays emitted by the first ray emitting device are X-rays, and the rays output by the second ray emitting device are beta rays, that is, the rays emitted by the first ray emitting device are different from the rays emitted by the second ray emitting device.

[0060] In some embodiments, the first measuring component 51, the second measuring component 52, the third measuring component 61, and the fourth measuring component 60 all employ laser ranging devices so that the thickness (e.g., coating thickness) of the same location on the battery electrode A can be detected by the cooperation of the first measuring component 51 and the second measuring component 52, and the cooperation of the first measuring component 61 and the second measuring component 62.

[0061] Taking the first measurement module 50 as an example, please refer to Figure 4. When the battery electrode A passes through the first measurement module 50 between the first measurement component 51 and the second measurement component 52, the first measurement component 51 detects and obtains the distance from the first measurement component 51 to the upper surface of the battery electrode A, and the second measurement component 52 detects and obtains the distance from the second measurement component 52 to the lower surface of the battery electrode A. Then, the thickness of the battery electrode A can be calculated based on the distance obtained by the two laser ranging devices (i.e., the first measurement component 51 and the second measurement component 52), thus realizing the thickness detection of the battery electrode A. Furthermore, by utilizing the adjustable feature of the second distance D2 between the first measurement module 50 and the second measurement module 60, two thickness detection measurements can be performed on the same position of the battery electrode A, thereby ensuring the accuracy and reliability of the thickness detection results.

[0062] In some embodiments, the first measurement module 50 and the second measurement module 60 may also be configured to have different detection and measurement functions. For example, one of the first measurement component 51 and the second measurement component 52 may be a first ray emitting device and the other may be a first ray receiving device, while the third measurement component 61 and the fourth measurement component 62 may both be laser ranging devices. Thus, the first measurement module 50 can be used to detect and measure the areal density of the battery electrode A, and the second measurement module 60 can be used to detect and measure the thickness of the battery electrode A. Based on the fact that the detection trajectories of the first measurement module 50 and the second measurement module 60 on the battery electrode A overlap, it is possible to complete the detection of two different items at the same location of the battery electrode A.

[0063] In other embodiments, the first measurement module 50 and the second measurement module 60 can also be other suitable detection devices. For example, one or both of the first measurement module 50 and the second measurement module 60 can be image detection devices, which can realize the detection and measurement of surface defects of battery electrode A. For example, taking two pictures of the same position of battery electrode A during the conveyor belt process can ensure the accuracy and reliability of the image detection results. All these are not elaborated here.

[0064] In one embodiment, referring to Figures 1 and 5, the scanning frame 20 adopts a C-shaped frame structure. Specifically, the scanning frame 20 has an opening 20a that runs through the scanning frame 20 in the front-to-back direction. The first measuring component 51 and the second measuring component 52 are arranged vertically opposite each other with respect to the opening 20a, that is, the first measuring component 51 and the second measuring component 52 are located on opposite sides of the opening 20a in the vertical direction. The third measuring component 61 and the fourth measuring component 62 are arranged vertically opposite each other with respect to the opening 20a, that is, the third measuring component 61 and the fourth measuring component 62 are located on opposite sides of the opening 20a in the vertical direction.

[0065] Therefore, during the left-right movement of the scanning frame 20 carrying the first measurement module 50 and the second measurement module 60, the opening 20a can be used to avoid the battery electrode A that is traveling in the front-back direction, so as to avoid contact or interference between the battery electrode A and the first measurement module 50, the second measurement module 60, the scanning frame 20, etc., thereby realizing non-contact non-destructive testing of the battery electrode A; at the same time, by utilizing the C-shaped frame structure of the scanning frame 20, it can provide stable structural support for the first measurement module 50 and the second measurement module 60, and also help to simplify the structure of the equipment and enhance the structural compactness of the equipment.

[0066] It should be noted that in some embodiments where the first measurement module 50 has only one measurement component (e.g., the second measurement component 52 is omitted), or the second measurement module 60 has only one measurement component (e.g., the fourth measurement component 62 is omitted), the first measurement module 50 or the second measurement module 60 may be located on one side of the opening 20a in the vertical direction.

[0067] In one embodiment, referring to Figures 1 and 5, the measuring device further includes a third measuring module 70, which is fixedly mounted on the scanning frame 20 (e.g., fixed to one end of the scanning frame 20 in the left-right direction) and located between the first measuring module 50 and the second measuring module 60 in the front-back direction; as the scanning frame 20 moves in the left-right direction, the third measuring module 70 can move synchronously with the scanning frame 20 to scan and measure the battery electrode A.

[0068] For example, the third measurement module 70 uses a laser rangefinder to detect and measure the thickness of the battery electrode A; the first measurement module 50 and the second measurement module 60 both include a radiation emitting device and a radiation receiving device to detect and measure the areal density of the battery electrode A; the scanning frame 20 adopts a C-shaped frame structure; by arranging the third measurement module 70 between the first measurement module 50 and the second measurement module 60 in the front-back direction, the force on the scanning frame 20 can be balanced, ensuring that the scanning frame 20 can move smoothly in the left-right direction; at the same time, with the cooperation of the three measurement modules, the areal density and thickness of the battery electrode A can be scanned and measured simultaneously, realizing comprehensive detection of multiple data dimensions of the battery electrode A.

[0069] Of course, the third measurement module 70 can also use other suitable detection and measurement devices. That is to say, depending on the actual detection and measurement requirements, the first measurement module 50, the second measurement module 60 and the third measurement module 70 can have the same or different detection and measurement functions.

[0070] In one embodiment, referring to Figures 2, 3, and 5, the first driving component 30 adopts a synchronous driving structure. Specifically, the first driving component 30 includes a first driving member 31 and a synchronous transmission component. Both the first driving member 31 and the synchronous transmission component are mounted on the scanning frame 20. The power end of the first driving member 31 is coupled to the synchronous transmission component, while the first measurement module 50 and the second measurement module 60 are respectively connected to the synchronous transmission component. Thus, when the first driving member 31 drives the synchronous transmission component to move, the synchronous transmission component can drive the first measurement module 50 and the second measurement module 60 to move synchronously towards each other or synchronously away from each other, thereby adjusting the second distance D2 between the first measurement module 50 and the second measurement module 60 in a timely manner. Due to the synchronous movement effect between the first measurement module 50 and the second measurement module 60, the response speed for adjusting the second distance D2 can be effectively accelerated to meet the scanning detection requirements.

[0071] For example, referring to Figure 5, the first driving component 31 may include a power element such as a motor capable of outputting rotational motion. The synchronous transmission assembly includes a drive shaft 32, a first synchronous belt assembly 33, and a second synchronous belt assembly 34. Both the first synchronous belt assembly 33 and the second synchronous belt assembly 34 are assembled from synchronous belts, synchronous pulleys, etc. The first synchronous belt assembly 33 and the second synchronous belt assembly 34 are arranged in parallel in the vertical direction, while the drive shaft 32 is connected to the first synchronous belt assembly 33 and the second synchronous belt assembly 34 in the vertical direction. The first measuring component 51 and the third measuring component 61 are respectively connected to the first synchronous belt assembly, and the first measuring component 51 and the third measuring component 61 are respectively slidably connected to the scanning frame 20. For example, the first measuring component 51 is provided with a slider 53 with a groove structure, and the scanning frame 20 is provided with a slide rail 21 extending in the left and right direction. The slider 53 is slidably connected to the slide rail 21 to form a linear module structure between the first measuring component 51 and the scanning frame 20.

[0072] Accordingly, the second measuring component 52 and the fourth measuring component 62 are structurally configured in the same manner as the first measuring component 51 and the third measuring component 61, that is, the second measuring component 52 and the fourth measuring component 62 are respectively connected to the second synchronous belt component 34, and the second measuring component 52 and the fourth measuring component 62 are respectively slidably connected to the scanning frame 20.

[0073] Thus, the first measuring component 51 and the third measuring component 61 are connected by the first synchronous belt assembly 33, and the second measuring component 52 and the fourth measuring component 62 are connected by the second synchronous belt assembly 34. During the process of the first driving member 31 driving the transmission shaft 32 to rotate forward or reverse, the first synchronous belt assembly 33 and the second synchronous belt assembly 34 can be made to move synchronously, thereby causing the first measuring component 51 (together with the second measuring component 52) ​​and the third measuring component 61 (together with the fourth measuring component 62) to move closer to each other or further away from each other, thereby achieving the purpose of driving the first measuring module 50 and the second measuring module 60 to move synchronously.

[0074] In other embodiments, the first drive assembly 30 may also adopt other suitable structures, such as using multiple transmission screws instead of the synchronous belt assembly; for example, when the first measuring module 50 and the second measuring module 60 are each an integral structural component (e.g., omitting the second measuring assembly 52 and the fourth measuring assembly 62), the second synchronous belt assembly can be omitted. In this case, a single synchronous belt assembly can achieve the effects of driving the first measuring module 50 and the second measuring module 60 to move synchronously towards each other, move synchronously away from each other, or move at different speeds in the same direction, thereby achieving the purpose of adjusting the second gap D2.

[0075] In some embodiments, referring to Figure 5, a reduction ratio structure 35 can be configured between the first driving member 31 and the transmission shaft 32. This reduction ratio structure 35 includes two pulleys and a transmission belt connecting the two pulleys. The two pulleys are respectively located on the power output ends of the transmission shaft 32 and the first driving member 31. The pulleys on the transmission shaft 32 are larger than the pulleys on the power shaft of the first driving member 31. Thus, the power end of the first driving member 31 is connected to the transmission shaft 32 via the reduction ratio structure 35, which can reduce or avoid the transmission of vibration, thus helping to maintain the overall stability of the first driving assembly 30. Of course, the reduction ratio structure 35 can also adopt other structures, such as a gear set structure.

[0076] In one embodiment, referring to Figures 1 to 3, the measuring device further includes a frame 11 and vibration isolation blocks 12; wherein, the frame 11 can be understood as a collection of relevant structural components that can place, install or position the measuring device in a predetermined spatial environment, and the vibration isolation blocks 12 are connected between the frame 11 and the base 10; the vibration isolation blocks 12 can be a plurality of rubber pads or other functional components that can play a role in vibration isolation, which are spaced apart between the base 10 and the frame 11.

[0077] Therefore, by using the vibration isolation block 12, direct contact between moving parts (i.e., measurement module, first drive component 30, scanning frame 20, second drive component 40, etc.) and stationary parts in the measuring equipment can be avoided, thereby isolating the vibration between the base 10 and the frame 11. For example, it can isolate the vibration transmitted from the base 10 to the frame 11. This can effectively prevent the vibration propagation from adversely affecting the measurement process and measurement results, and can also improve the overall structural stability of the measuring equipment and the stability of the movement of moving parts.

[0078] In one embodiment, referring to Figures 1, 2, and 4, a support roller 13 is provided on the frame 11. For example, two support rollers 13 are disposed on opposite sides (e.g., front and rear sides) of the frame 10 in the direction of the battery electrode A's travel, while the base 10 (along with the scanning frame 20, measurement module, etc.) is arranged between the two support rollers 13. The support rollers 13 can support the traveling battery electrode A on the measuring device, so that the battery electrode A can pass smoothly through the scanning frame 20, the first measurement module 50, the second measurement module 60, etc., in a non-contact manner. For example, by adjusting the position of the support rollers 13 in the vertical direction, the battery electrode A can sequentially pass through the first measurement module 50, the opening 20a of the scanning frame 20, and the second measurement module 60.

[0079] In one embodiment, referring to Figures 1 to 3 and Figure 5, the second drive assembly 40 includes a second drive member 41 and a transmission screw 42; wherein, the transmission screw 42 extends in the left-right direction and is installed on the base 10, and the transmission screw 42 is connected to the scanning frame 20, for example, the scanning frame 20 is threaded onto the transmission screw 42; the second drive member 41 is disposed on the base 10, and the power end of the second drive member 41 is coupled to the transmission screw 42; in a specific implementation, the second drive member 41 may include a power device such as a motor capable of outputting rotational motion.

[0080] Therefore, by utilizing the linear sliding connection between the scanning frame 20 and the base 10, and the connection between the scanning frame 20 and the transmission screw 42, the scanning frame 20 can be driven by the second driving component 41 to rotate the transmission screw 42 (i.e., forward or reverse rotation), thereby causing the measurement module to move linearly back and forth in the left and right directions. This allows the measurement module to perform reciprocating scanning detection and measurement on the battery electrode A. Furthermore, the screw-driven structure used in the second driving component 40 effectively improves the precision and stability of the scanning frame 20's movement.

[0081] Of course, the second drive component 40 can also adopt other suitable structures, as long as it can drive the scanning frame 20 to move linearly back and forth in the left and right direction; it will not be elaborated here.

[0082] Please refer to Figure 8 and, in conjunction with Figures 1 to 7, this application embodiment also provides a measurement method for scanning and detecting a test object using the measurement device of the aforementioned embodiment; the method includes steps 100 to 500, which will be specifically described below using battery electrode A as an example.

[0083] Step 100: Obtain the belt speed V1 of battery electrode A, the moving speed V2 of scanning frame 20, the first distance D1 between the first measurement module 50 and the second measurement module 60 in the front-back direction, and the second distance D2 between the first measurement module 50 and the second measurement module 60 in the left-right direction.

[0084] For example, during the debugging phase of the measuring equipment or the execution phase of the measuring operation, the first speed detection element 82 is used to detect the conveyor speed V1 of the battery electrode A, and the second speed detection element 83 is used to detect the moving speed V2 of the scanning frame 20; the electrical connection between the control device 81 and the first speed detection element 82 and the second speed detection element 83 enables the control device 81 to acquire the conveyor speed V1 and the moving speed V2; the electrical connection between the control device 81 and the first drive assembly 30 enables the control device 81 to acquire the current second gap D2; and since the first gap D1 is a known and quantitative parameter, it can be preset in the control device 81.

[0085] Step 200: Calculate and determine whether the first time difference T1 and the second time difference T2 are equal. The first time difference T1 satisfies T1=D1 / V1, and the second time difference T2 satisfies T2=D2 / V2.

[0086] For example, based on the conveyor speed V1, the moving speed V2, the first gap D1 and the current second gap D2, the control device 81 calculates and determines whether the first time difference T1 and the second time difference T2 are equal according to the preset speed displacement formulas T1 = D1 / V1 and T2 = D2 / V2.

[0087] Step 300: If the first time difference T1 and the second time difference T2 are not equal, the first driving component 30 adjusts the second spacing D2.

[0088] Specifically, if the control device 81 determines that the first time difference T1 is not equal to the second time difference T2, the control device 81 provides the first drive component 30 with instruction information to drive the first measurement module 50 and the second measurement module 60 to move (e.g., move towards each other, move away from each other, move at a different speed, etc.) so as to adjust the size of the second gap D2 so that the first time difference T1 is equal to the second time difference T2.

[0089] Step 400: If the first time difference T1 is equal to the second time difference T2, then the first drive component 30 stops working.

[0090] Specifically, when the first time difference T1 is equal to the second time difference T2, the control device 81 provides the first drive component 30 with a stop operation instruction to maintain the current second spacing D2; thus, during the movement of the battery electrode A and the scanning frame 20, the detection trajectory of the first measurement module 50 and the detection trajectory of the second measurement module 60 can be kept overlapping on the battery electrode A.

[0091] Step 500: After the scanning frame 20 moves the first measurement module 50 and the second measurement module 60 out of the battery electrode A, the first driving component 30 drives the first measurement module 50 and the second measurement module 60 to move so that the first measurement module 50 is located on the side closer to the battery electrode A in the left-right direction compared to the second measurement module 60.

[0092] For example, when the first measurement module 50 and the second measurement module 60 move from the left side to the right side of the battery electrode A along with the scanning frame 20, a one-way scan of one stroke is completed. After the first measurement module 50 and the second measurement module 60 move out of the battery electrode A from the right side, the first measurement module 50 is located to the right of the first measurement module 52. At this time, the control device 81 can provide the first drive assembly 30 with the instruction information to switch the relative positions of the first measurement module 50 and the second measurement module 60, adjusting the first measurement module 50 to the left of the second measurement module 60. This ensures that the first measurement module 50 always enters the battery electrode A before the second measurement module 60 and performs detection and measurement on the battery electrode A, forming a correspondence between the front-end detection and the back-end detection. This repeated adjustment can realize the reciprocating scanning measurement of the battery electrode A.

[0093] It is understandable that, based on the structural architecture of the measuring equipment and the coordination relationship between related functional components, the detection trajectory of the first measuring module 50 can be made to coincide with the detection trajectory of the second measuring module 60 by adjusting the second spacing D2 in a timely or real-time manner. For example, when the belt speed V1, the moving speed V2, etc. change and cause the first time difference T1 to be different from the second time difference T2, the first time difference T1 can be made equal to the second time difference T2 by adjusting the second spacing D2.

[0094] Furthermore, based on the signal connection relationship between the control device 81 and the first drive component 30, the structural form of the first drive component 30 and its structural connection relationship with the first measurement module 50 and the second measurement module 60, it is possible to detect and acquire the second gap D2 by combining existing technical means, which will not be limited or described in detail here.

[0095] Those skilled in the art will understand that all or part of the functions of the measurement method in the above embodiments (e.g., data acquisition, analysis, calculation, etc.) can be implemented by hardware or by computer program. Furthermore, the hardware or computer program implementing the measurement method can be a component of the measurement equipment and the measurement method, or a part that works in conjunction with the measurement equipment and the measurement method.

[0096] When all or part of the functions in the above embodiments are implemented by a computer program, the program can be stored in a computer-readable storage medium, which may include: read-only memory, random access memory, disk, optical disk, hard disk, etc., and the above functions are implemented by executing the program through a computer. For example, the program can be stored in the memory of a device, and when the program in the memory is executed by the processor, all or part of the above functions can be implemented.

[0097] In addition, when all or part of the functions in the above embodiments are implemented by computer programs, the programs can also be stored in storage media such as servers, other computers, disks, optical discs, flash drives, or portable hard drives. They can be downloaded or copied to the memory of the local device, or the system of the local device can be updated. When the program in the memory is executed by the processor, all or part of the functions in the above embodiments can be implemented.

[0098] The above examples illustrate this application only to aid understanding and are not intended to limit its scope. Those skilled in the art to which this application pertains can make various simple deductions, modifications, or substitutions based on the ideas presented.

Claims

1. A measuring device, characterized in that, include: Base; The scanning frame is slidably connected to the base in the left-right direction; The first measurement module is slidably connected to the front side of the scanning frame in the left-right direction; The second measurement module is slidably connected to the rear side of the scanning frame in the left-right direction; A first driving component is disposed on the scanning frame; the power end of the first driving component is coupled to the first measurement module and the second measurement module, and is used to drive the first measurement module and the second measurement module to move, so as to adjust the distance between the first measurement module and the second measurement module in the left-right direction; A second drive assembly is disposed on the base; the power end of the second drive assembly is coupled to the scanning frame to drive the scanning frame to reciprocate.

2. The measuring device as described in claim 1, characterized in that, The first measurement module includes a first measurement component and a second measurement component, with the first measurement component and the second measurement component being vertically opposite each other; the second measurement module includes a third measurement component and a fourth measurement component, with the third measurement component and the fourth measurement component being vertically opposite each other.

3. The measuring device as described in claim 2, characterized in that, One of the first measuring component and the second measuring component is a first ray emitting device and the other is a first ray receiving device, or both the first measuring component and the second measuring component are laser rangefinders; One of the third measuring component and the fourth measuring component is a second ray emitting device and the other is a second ray receiving device, or both the third measuring component and the fourth measuring component are laser ranging devices.

4. The measuring device as described in claim 3, characterized in that, The rays emitted by the first ray emitting device are different from those emitted by the second ray emitting device.

5. The measuring device as described in claim 2, characterized in that, The scanning frame is a C-shaped frame with an opening. The first measuring component and the second measuring component are vertically opposite each other with respect to the opening, and the third measuring component and the fourth measuring component are vertically opposite each other with respect to the opening.

6. The measuring device as described in claim 2, characterized in that, The first driving component includes a first driving member and a synchronous transmission component, which are disposed on the scanning frame; the first measurement module and the second measurement module are respectively connected to the synchronous transmission component; the power end of the first driving member is coupled to the synchronous transmission component to drive the synchronous transmission component to move the first measurement module and the second measurement module synchronously.

7. The measuring device as described in claim 6, characterized in that, The synchronous transmission assembly includes: A first synchronization belt assembly is disposed on the scanning frame; the first synchronization belt assembly connects the first measuring component and the third measuring component, and is used to drive the first measuring component and the third measuring component to move synchronously; A second synchronous belt assembly is disposed on the scanning frame, and the second synchronous belt assembly is arranged parallel to the first synchronous belt assembly vertically; the second synchronous belt assembly connects the second measuring component and the fourth measuring component, and is used to drive the second measuring component and the fourth measuring component to move synchronously; The drive shaft connects the first synchronous belt assembly and the second synchronous belt assembly to the power end of the first driving member, so as to drive the drive shaft to drive the first synchronous belt assembly and the second synchronous belt assembly to move synchronously.

8. The measuring device as described in claim 7, characterized in that, The power end of the first driving component is connected to the transmission shaft through a reduction ratio structure.

9. The measuring device as described in claim 1, characterized in that, The second drive assembly includes a lead screw and a second drive member. Both the lead screw and the second drive member are disposed on the base. The lead screw is connected to the scanning frame. The power end of the second drive member is coupled to the lead screw to drive the lead screw to rotate, thereby moving the scanning frame.

10. The measuring device as described in claim 1, characterized in that, It also includes a frame and vibration isolation blocks, the vibration isolation blocks being connected between the base and the frame to isolate vibrations transmitted from the base to the frame.

11. The measuring device according to any one of claims 1-10, characterized in that, It also includes a control device, a first speed detection element, and a second speed detection element; the first speed detection element is electrically connected to the control device and is used to detect the conveyor speed V1 of the object under test; the second speed detection element is electrically connected to the control device and is used to detect the moving speed V2 of the scanning frame; wherein: The first measuring module and the second measuring module have a first distance D1 in the front-to-back direction, and a second distance D2 in the left-to-right direction; The control device is electrically connected to the first drive component and the second drive component, and is used to calculate the first time difference T1 and the second time difference T2. The first time difference T1 satisfies T1=D1 / V1, and the second time difference T2 satisfies T2=D2 / V2. The control device is also used to control the first drive component to adjust the second gap D2 so that the first time difference T1 and the second time difference T2 satisfy T1 = T2.

12. A measurement method, implemented using the measuring device as described in any one of claims 1-11, characterized in that, The scanning measurement step includes: The following parameters are obtained: the belt speed V1 of the object being measured, the moving speed V2 of the scanning frame, the first distance D1 between the first measurement module and the second measurement module in the front-back direction, and the second distance D2 between the first measurement module and the second measurement module in the left-right direction. Calculate the first time difference T1 and the second time difference T2. The first time difference T1 satisfies T1 = D1 / V1, and the second time difference T2 satisfies T2 = D2 / V2. Determine whether the first time difference T1 and the second time difference T2 are equal; If the first time difference T1 and the second time difference T2 are not equal, the first driving component adjusts the second spacing D2; If the first time difference T1 is equal to the second time difference T2, the first driving component stops working.

13. The measurement method as described in claim 12, characterized in that, It also includes a position swapping step, which includes: After the scanning frame moves the first measurement module and the second measurement module out of the object being measured, the first driving component drives the first measurement module and the second measurement module to move so that the first measurement module is located closer to the object being measured than the second measurement module.

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