Membrane material detection device

Abstract

The utility model belongs to the technical field of membrane material detection, and particularly relates to a membrane material detection device which comprises a base, a mounting frame, a driving mechanism, a first detection module and a second detection module, the mounting frame has a movement stroke D, and the distance between the first detection module and the second detection module in the first direction is L; llt is satisfied; d, the first detection module synchronously moves along with the mounting frame to form a first measurement interval, the second detection module synchronously moves along with the mounting frame to form a second measurement interval, and each of the first measurement interval and the second measurement interval comprises two acceleration and deceleration motion intervals and a constant-speed motion interval, and the uniform-speed motion interval is arranged between two adjacent acceleration and deceleration motion intervals. Owing to Llt; d, enabling the first measurement interval and the second measurement interval to have an overlapping interval in the first direction, reducing the calculation of the measurement data of the acceleration and deceleration motion area, reducing the position deviation between the theoretical position and the real position corresponding to the measurement data, and improving the accuracy of the detection device.

Description

Technical Field

[0001] The present application relates to the technical field of non-destructive testing of membrane materials, and more specifically to a membrane material testing device. Background Art

[0002] At present, the measurement of battery membrane materials is mostly performed by scanning from one side of the membrane material to the other side roughly along the width direction of the membrane material. The measuring frame used in existing measuring equipment is mostly a C-frame, and the measuring module is fixedly installed at the open end of the C-frame. The driving mechanism drives the measuring frame to move on the base to measure the membrane material; however, the above solution is difficult to improve the measurement efficiency. If the detection efficiency is to be improved, the only way to increase the moving speed of the measuring frame is to increase the moving speed. When the moving speed increases, the impulse of the acceleration and deceleration process of the measuring frame during reversing will also increase, and the increase in impulse is very likely to damage the driving mechanism.

[0003] In the prior art, the measurement efficiency is improved by shortening the measurement stroke of the measuring frame without increasing the movement speed of the measuring frame. However, in the actual application of this solution, it is found that a position deviation occurs between the calculated theoretical position and its actual position, thereby reducing the accuracy of the detection data of the device. Utility Model Content

[0004] The present application provides a film material detection device, which can reduce the position deviation between the theoretical position corresponding to the measurement data and its actual position, thereby improving the accuracy of the detection device.

[0005] The present application provides a film material detection device, comprising:

[0006] base;

[0007] a mounting frame movably mounted on the base;

[0008] a driving mechanism connected to the mounting frame and configured to drive the mounting frame to reciprocate in a first direction, wherein the movement stroke of the mounting frame is D; and

[0009] The first detection module and the second detection module are both installed on the mounting frame, and the distance between the first detection module and the second detection module in the first direction is L; satisfying L <D;

[0010] The first detection module moves synchronously with the mounting frame to form a first measurement interval; the second detection module moves synchronously with the mounting frame to form a second measurement interval;

[0011] The first measurement interval includes a first acceleration / deceleration interval and a second acceleration / deceleration interval, and a first uniform motion interval located between the first acceleration / deceleration interval and the second acceleration / deceleration interval; the second measurement interval includes a third acceleration / deceleration interval and a fourth acceleration / deceleration interval, and a second uniform motion interval located between the third acceleration / deceleration interval and the fourth acceleration / deceleration interval;

[0012] The first measurement interval and the second measurement interval have an overlapping interval in the first direction.

[0013] In one embodiment, the length of the first acceleration / deceleration interval is M, and the length of the second acceleration / deceleration interval is N, satisfying (M+N) / 2<DL.

[0014] In one embodiment, the length M of the first acceleration / deceleration interval and the length N of the second acceleration / deceleration interval satisfy M+N<DL.

[0015] In one embodiment, the length of the first acceleration / deceleration interval is M, and the length of the second acceleration / deceleration interval is N, and M=N.

[0016] In one embodiment, the mounting bracket has a through slot, and the slot has a preset opening length in the first direction.

[0017] In one embodiment, the mounting frame is a circumferentially closed structure, and the notch is a hollow area of the circumferentially closed structure.

[0018] In one embodiment, the first detection module and the second detection module both include a first laser head assembly and a second laser head assembly, and the first laser head assembly and the second laser head assembly are relatively arranged on both sides of the notch to detect the film material.

[0019] In one embodiment, the first detection module and the second detection module both include a ray generating component and a ray receiving component, and the ray generating component and the ray receiving component are relatively arranged on two sides of the notch to detect the film material.

[0020] In one embodiment, the first detection module and the second detection module both include ultrasonic sensors or image sensors.

[0021] In one embodiment, the driving mechanism includes a driving motor and a screw rod, the output end of the driving motor is connected to the screw rod, the screw rod is rotatably set on the base, the mounting bracket is movably connected to the screw rod, and the driving motor can drive the screw rod to rotate, so as to drive the mounting bracket to perform linear reciprocating motion along the axis of the screw rod.

[0022] According to the above embodiment, the film material detection device includes a base, a mounting frame, a driving mechanism, a first detection module, and a second detection module. The mounting frame has a movement stroke D, and the distance L between the first detection module and the second detection module is less than the movement stroke D of the mounting frame. The first detection module and the second detection module can move synchronously with the mounting frame to form a first measurement interval and a second measurement interval, respectively. Since the distance between the first detection module and the second detection module is less than the movement stroke D of the mounting frame, the distance between the first detection module and the second detection module is less than the length of the first measurement interval or the second measurement interval, thereby causing an overlapping area in the first measurement interval or the second measurement interval. Since the uniform speed movement intervals of the first detection module and the second detection module are both set between two adjacent acceleration and deceleration movement intervals, the first measurement interval and the second measurement interval have an overlapping interval in the first direction, thereby reducing the inclusion of measurement data in the acceleration and deceleration movement area, reducing the position deviation between the theoretical position corresponding to the measurement data and its actual position, and improving the accuracy of the detection device. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 A schematic structural diagram of a detection device in an embodiment;

[0024] Figure 2 This is a structural front view of a detection device in one embodiment;

[0025] Figure 3 Schematic diagram of the motion trajectories of two detection modules in the first embodiment;

[0026] Figure 4 Schematic diagram of the motion trajectories of two detection modules in the second embodiment;

[0027] Figure 5 Schematic diagram of the motion trajectories of two detection modules in the third embodiment.

[0028] Among them: 100, base; 200, mounting bracket; 210, slot; 300, drive mechanism; 310, drive motor; 320, screw; 400, detection module; 410, first detection module; 420, second detection module; 430, first laser head assembly; 440, second laser head assembly; 450, ray generating assembly; 460, ray receiving assembly; 500, guide rail; X, first direction; Y, second direction. DETAILED DESCRIPTION

[0029] The present application is further described in detail below by means of specific embodiments in conjunction with the accompanying drawings. Similar elements in different embodiments are numbered with associated similar elements. In the following embodiments, many detailed descriptions are provided to enable the present application to be better understood. However, those skilled in the art will readily appreciate that some of the features may be omitted in different circumstances, or may be replaced by other elements, materials, or methods. In some cases, some operations related to the present application are not shown or described in the specification. This is to avoid the core portion of the present application being overwhelmed by excessive descriptions. For those skilled in the art, it is not necessary to describe these related operations in detail. They can fully understand the related operations based on the description in the specification and the general technical knowledge in the art.

[0030] In addition, the features, operations, or characteristics described in the specification may be combined in any appropriate manner to form various implementations, and the operational steps involved in each embodiment may be interchanged or adjusted in a manner that is obvious to those skilled in the art. Therefore, the specification and drawings are only for the purpose of clearly describing a particular embodiment and do not imply a required composition and / or sequence.

[0031] The serial numbers assigned to components herein, such as "first," "second," etc., are used solely to distinguish the objects being described and do not convey any sequential or technical meaning. References to "connection" and "coupling" herein, unless otherwise specified, include both direct and indirect connections (couplings).

[0032] The present application provides a film material detection device, which is used to detect the performance of film materials (including diaphragms or pole pieces, etc.), such as measuring the thickness of the film material.

[0033] See also Figures 1 to 5 The detection device includes a base 100, a mounting frame 200, a driving mechanism 300 and at least two detection modules 400. The mounting frame 200 is movably mounted on the base 100. The driving mechanism 300 is connected to the mounting frame 200 to drive the mounting frame 200 to reciprocate along a first direction X. The movement stroke of the mounting frame is D. At least two detection modules 400 are arranged on the mounting frame 200 along the first direction X at intervals. The detection modules 400 move with the mounting frame 200. By detecting the film material through the at least two detection modules 400, the detection efficiency can be improved while increasing the impulse of the measurement frame acceleration and deceleration process.

[0034] Furthermore, the mounting bracket 200 has a motion stroke, which includes at least two acceleration and deceleration motion intervals and one uniform speed motion interval, and the uniform speed motion interval is arranged between two adjacent acceleration and deceleration motion intervals.

[0035] It can be understood that when the mounting frame 200 starts to move, it will accelerate to a preset speed at a certain acceleration, and after moving a certain distance at the preset speed, it will decelerate until it stops. Therefore, the movement stroke formed during the entire movement process is divided into two acceleration / deceleration movement intervals and a constant-speed movement interval. Since the detection module 400 is arranged on the mounting frame 200 and can move synchronously with the mounting frame 200, the detection module 400 performs uniform detection on the film material in the constant-speed movement interval, and can also perform acceleration / deceleration detection on the film material in the two acceleration / deceleration movement intervals.

[0036] It should be understood that the acquisition frequency of the detection module 400 is fixed, that is, the detection module 400 performs data acquisition uniformly at a preset frequency, but the movement speed of the detection module 400 is constantly changing in the acceleration / deceleration interval, which leads to the following situation in the acceleration / deceleration movement interval: Although the time interval (fixed frequency) between the data collected by the detection module 400 is the same, the corresponding spatial distance (changing movement speed) between the data is not completely consistent. Once the corresponding spatial distance between the data is not completely consistent, it will gradually cause a position deviation between the theoretical position (in space) calculated by the amount of data and its true position, and the more data in the acceleration / deceleration movement interval is included, the greater the position deviation, thus reducing the accuracy of the detection data of the detection device.

[0037] To solve the problem that the more data in the acceleration / deceleration movement interval is included, the greater the position deviation and the worse the accuracy of the detection data of the detection device, through reasonable design of the distance between the two detection modules 400 and the movement trajectory of the mounting frame 200, the data in the acceleration / deceleration movement interval included is reduced, thereby reducing the position deviation and improving the detection accuracy of the detection device.

[0038] In some embodiments, the distance between two adjacent detection modules 400 in the first direction X is L, satisfying L < D, so that there is an overlapping area between two adjacent detection modules 400 in the first direction X, thereby reducing the inclusion of the data measured in the acceleration / deceleration movement interval, reducing the position deviation between the theoretical position corresponding to the measured data and its true position, and improving the accuracy of the detection device.

[0039] Specifically, please refer to Figure 2 and Figure 3The detection module 400 includes a first detection module 410 and a second detection module 420. The distance between the first detection module 410 and the second detection module 420 in the first direction X is L. The first detection module 410 moves synchronously with the mounting frame 200 to form a first measurement interval S1. The two acceleration and deceleration motion intervals of the first detection module 410 are the first acceleration and deceleration interval S11 and the second acceleration and deceleration interval S13, and the uniform speed motion interval is the first uniform speed motion interval S12. The length of the first measurement interval S1 is D; the second detection module 420 moves synchronously with the mounting frame 200 to form a second measurement interval S 2. The two acceleration and deceleration intervals of the second detection module 420 are the third acceleration and deceleration interval S21 and the fourth acceleration and deceleration interval S23, respectively. The uniform speed interval is the second uniform speed interval S22. The length of the second measurement interval S2 is D. The first measurement interval S1 and the second measurement interval S2 have an overlapping interval in the first direction X, that is, the second acceleration and deceleration interval S13 and the third acceleration and deceleration interval S21 partially overlap, as shown in the shaded area A in the figure. Area A only needs to include the data measured by one of the detection modules 400 in this part, thereby reducing the data included in the acceleration and deceleration intervals and improving the accuracy of the measurement data.

[0040] Of course, in other embodiments, other numbers of detection modules 400 may be installed on the mounting frame 200, such as 3 or 4 detection modules 400. The same spacing between the multiple detection modules 400 facilitates simultaneous measurement and data combination.

[0041] Based on the needs of improving measurement accuracy and improving measurement efficiency, at least two measurement modules 400 can be provided, and the parameters of the measurement modules 400 are exactly the same. The principle of improving measurement accuracy is described in detail below by setting the first detection module 410 and the second detection module 420. Since the motion parameters of the first detection module 410 and the second detection module 420 are the same, the motion parameters of the first detection module 410 will be described in detail, and the second detection module 420 is the same. For example, the length of the first acceleration and deceleration interval S11 is M, and the corresponding length of the third acceleration and deceleration interval S21 is also M, and so on. It will not be repeated later.

[0042] In one embodiment, the length M of the first acceleration / deceleration interval and the length N of the second acceleration / deceleration interval satisfy (M+N) / 2<DL, which not only enables an overlapping area between two adjacent detection modules 400, but also enables part of the acceleration / deceleration interval of one of the two adjacent detection modules 400 to fall into the uniform speed interval of the other detection module 400. In this way, the data of the uniform speed motion interval in the overlapping area can be used to replace the data of the acceleration / deceleration motion interval, so as to further reduce the data included in the acceleration / deceleration motion interval, thereby further reducing the position deviation between the theoretical position corresponding to the measurement data and its actual position, and improving the accuracy of the detection device.

[0043] For details, please refer to Figure 4 The first measurement interval S1 and the second measurement interval S2 have an overlapping interval in the first direction X, and the overlapping interval includes the partial overlap of the second acceleration / deceleration motion interval S13 of the first detection module 410 and the third acceleration / deceleration motion interval S21 of the second detection module 420, that is, the shaded area A in the figure, and also includes the partial overlap of the third acceleration / deceleration motion interval S21 of the second detection module 420 and the first uniform speed motion interval S12 of the first detection module 410, that is, the shaded area B1 in the figure, and also includes the partial overlap of the second acceleration / deceleration motion interval S13 of the first detection module 410 and the second uniform speed motion interval S22 of the second detection module 420, that is, the shaded area B2 in the figure. In the shaded area B1, the data of the uniform speed measurement of the first detection module 410 can be used to replace the acceleration / deceleration measurement data of the second detection module 420, and in the shaded area B2, the data of the uniform speed measurement of the second detection module 420 can be used to replace the acceleration / deceleration measurement data of the first detection module 410, thereby reducing the data included in the acceleration / deceleration motion interval and further improving the accuracy of the measurement data.

[0044] In one embodiment, the length M of the first acceleration / deceleration interval and the length N of the second acceleration / deceleration interval satisfy M+N<DL, which not only enables the first measurement interval S1 and the second measurement interval S2 to have an overlapping interval in the first direction X, but also enables the acceleration / deceleration interval of one detection module 400 of two adjacent detection modules 400 to completely fall within the uniform speed interval of the other detection module 400. In this way, the data of the uniform speed motion interval in this area can be used to replace the data of the acceleration / deceleration motion interval, so as to further reduce the data included in the acceleration / deceleration motion interval, thereby further reducing the position deviation between the theoretical position corresponding to the measurement data and its actual position, and improving the accuracy of the detection device.

[0045] Specifically, the third acceleration and deceleration motion interval S21 of the second detection module 420 just completely falls within the first uniform speed motion interval S12 of the first detection module 410, that is, the shaded C1 area in the figure, and the second acceleration and deceleration motion interval S13 of the first detection module 410 just completely falls within the second uniform speed motion interval S22 of the second detection module 420, that is, the shaded C2 area in the figure. In the shaded C1 area, the data measured at a uniform speed by the first detection module 410 can replace the data measured at an acceleration and deceleration by the second detection module 420, and in the shaded C2 area, the data measured at a uniform speed by the second detection module 420 can replace the data measured at an acceleration and deceleration by the first detection module 410, thereby reducing the data included in the acceleration and deceleration motion intervals and further improving the accuracy of the measurement data.

[0046] Of course, see Figure 5In other embodiments, the third acceleration / deceleration motion interval S21 of the second detection module 420 completely falls within the first uniform motion interval S12 of the first detection module 410, the second acceleration / deceleration motion interval S13 of the first detection module 410 completely falls within the second uniform motion interval S22 of the second detection module 420, and there is also an overlapping area C3 between the uniform motion interval S12 of the first detection module 410 and the uniform motion interval S22 of the second detection module 420.

[0047] In one embodiment, the length M of the first acceleration / deceleration interval S11 and the length N of the second acceleration / deceleration interval S13 satisfy M=N. The first detection module 410 has the same acceleration in the first acceleration / deceleration interval S11 and the second acceleration / deceleration interval S13, and the overlapping area remains consistent during reciprocating motion, which can further reduce the data counted and improve measurement accuracy.

[0048] In one embodiment, the mounting frame 200 has a through-type slot 210, which is arranged along the second direction Y through the mounting frame 200. The second direction Y and the first direction X are perpendicular to each other. The slot 210 has a preset opening length in the first direction X, and the preset opening length is adapted to the size of the membrane material (or sheet material) for allowing the membrane material to pass through.

[0049] In one embodiment, mounting frame 200 is a circumferentially closed structure, with notch 210 serving as the hollow region within the circumferentially closed structure. Mounting frame 200 can be a flat, O-shaped structure, which helps reduce space usage. The circumferentially closed structure provides space for film or sheet material to pass through without requiring additional support structures. This circumferentially closed structure also supports detection module 400. It also supports itself, evenly distributing force to eliminate deformation caused by uneven stress, ensuring a stable placement of detection module 400 and preventing impact on measurement results.

[0050] In one embodiment, the inspection module 400 includes a first laser head assembly 430 and a second laser head assembly 440, which are positioned opposite each other on either side of the slot 210 to inspect the film. The first laser head assembly 430 and the second laser head assembly 440 work together to measure the film passing through the slot 210 along the second direction Y. For example, when measuring thickness, the film thickness is calculated based on the time difference between laser reception and emission between the first laser head assembly 430 and the second laser head assembly 440. This data is then used to detect the consistency and uniformity of the film thickness.

[0051] In another embodiment, the detection module 400 includes a ray generating component 450 and a ray receiving component 460 . The ray generating component 450 and the ray receiving component 460 are disposed on two sides of the slot 210 to detect the film material.

[0052] In one embodiment, the detection module 400 includes an ultrasonic sensor or an image sensor, which is used to test film material damage or film material surface quality.

[0053] In one embodiment, the film material detection device further includes a guide rail 500 disposed on the base 100. The mounting frame 200 is slidably mounted on the guide rail 500. The drive mechanism 300 is capable of driving the mounting frame 200 to slide along the guide rail 500. The provision of the guide rail 500 can improve the stability and accuracy of the movement of the mounting frame 200, thereby improving the accuracy of data measurement. The guide rail 500 is disposed parallel to the linear slot 210 and perpendicular to the direction of travel of the film material.

[0054] In one embodiment, the driving mechanism 300 includes a driving motor 310 and a screw rod 320. The output end of the driving motor 310 is connected to the screw rod 320. The screw rod 320 is rotatably set on the base 100. The mounting frame 200 is movably connected to the screw rod 320. The driving motor 310 can drive the screw rod 320 to rotate, so as to drive the mounting frame 200 to perform linear reciprocating motion along the axis of the screw rod 320. The screw rod 320 is set parallel to the guide rail 500.

[0055] The above specific examples are used to illustrate the present application, which is only used to help understand the present application and is not intended to limit the present application. For those skilled in the art of the present application, based on the concept of the present application, they can also make some simple deductions, modifications or substitutions.

Claims

1. A film material detection device, characterized in that: include: base; a mounting frame movably mounted on the base; a driving mechanism connected to the mounting frame and configured to drive the mounting frame to reciprocate in a first direction, wherein the movement stroke of the mounting frame is D; as well as The first detection module and the second detection module are both installed on the mounting frame, and the distance between the first detection module and the second detection module in the first direction is L; satisfying L <D; The first detection module moves synchronously with the mounting frame to form a first measurement interval; the second detection module moves synchronously with the mounting frame to form a second measurement interval; The first measurement interval includes a first acceleration / deceleration interval and a second acceleration / deceleration interval, and a first uniform motion interval located between the first acceleration / deceleration interval and the second acceleration / deceleration interval; the second measurement interval includes a third acceleration / deceleration interval and a fourth acceleration / deceleration interval, and a second uniform motion interval located between the third acceleration / deceleration interval and the fourth acceleration / deceleration interval; The first measurement interval and the second measurement interval have an overlapping interval in the first direction.

2. The film material detection device according to claim 1, characterized in that: The length of the first acceleration / deceleration interval is M, and the length of the second acceleration / deceleration interval is N, satisfying (M+N) / 2<DL.

3. The film material detection device according to claim 2, characterized in that: The length M of the first acceleration / deceleration interval and the length N of the second acceleration / deceleration interval satisfy M+N<DL.

4. The film material detection device according to any one of claims 2 and 3, characterized in that: The length of the first acceleration / deceleration section is M, and the length of the second acceleration / deceleration section is N, which satisfies M=N.

5. The film material detection device according to any one of claims 1 to 3, characterized in that: The mounting bracket has a through slot, and the slot has a preset opening length in the first direction.

6. The film material detection device according to claim 5, characterized in that: The mounting frame is a circumferentially closed structure, and the notch is a hollow area of the circumferentially closed structure.

7. The film material detection device according to claim 5, characterized in that: The first detection module and the second detection module both include a first laser head assembly and a second laser head assembly. The first laser head assembly and the second laser head assembly are relatively arranged on two sides of the notch to detect the film material.

8. The film material detection device according to claim 5, characterized in that: The first detection module and the second detection module both include a ray generating component and a ray receiving component. The ray generating component and the ray receiving component are relatively arranged on two sides of the notch to detect the film material.

9. The film material detection device according to claim 1, characterized in that: The first detection module and the second detection module both include an ultrasonic sensor or an image sensor.

10. The film material detection device according to claim 1, characterized in that: The driving mechanism includes a driving motor and a screw rod, the output end of the driving motor is connected to the screw rod, the screw rod is rotatably arranged on the base, the mounting bracket is movably connected to the screw rod, and the driving motor can drive the screw rod to rotate, so as to drive the mounting bracket to perform linear reciprocating motion along the axis of the screw rod.

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