Lithium / sodium battery pole piece burr detection device

Abstract

The utility model provides a lithium / sodium battery pole piece burr detection device, which is characterized in that the upper side and the lower side of two ends of a pole piece body are respectively provided with a second reflecting plate, an angle of 45 degrees is formed between each second reflecting plate and the pole piece body, and second light sources are respectively arranged above and below the second reflecting plates on the upper side and the lower side; the first light sources are installed above or below the edges of the two ends of the pole piece body respectively, light rays emitted by the first light sources are perpendicular to the pole piece body, the first reflectors are installed on the opposite sides of the first light sources and the pole piece body, and the angle of each first reflector is 45 degrees. Light emitted by the first light source and the second light source is parallel light; light detection devices for detecting the parallel light are mounted on two sides of the pole piece body. Through innovative optical design and structural layout, the detection efficiency and accuracy are remarkably improved, and the problem that pole piece burrs, especially longitudinal burrs, are difficult to comprehensively detect in the prior art is solved.

Description

TECHNICAL FIELD

[0001] The utility model relates to lithium / sodium battery technical field especially relates to a lithium / sodium battery pole piece burr detection device. BACKGROUND

[0002] Because tool wear lithium / sodium battery pole piece divides and is easy to produce burr on the edge of pole piece, too big burr is very easy to pierce diaphragm, makes diaphragm breakage, thereby causes the internal short circuit of electric core and scrap, serious person can appear safety problem still possibly. Therefore, the burr detection of lithium / sodium battery pole piece in the production process of pole piece is particularly important. The current detection method mostly is that lithium / sodium battery pole piece is placed on the secondary dimension detection platform, then uses secondary dimension and obtains the image of burr on lithium / sodium battery pole piece, and this method only detects the horizontal burr on pole piece, cannot detect the vertical burr perpendicular to pole piece direction. UTILITARIAN CONTENT

[0003] In order to solve the above problems, the utility model aims at providing a lithium / sodium battery pole piece burr detection device, which significantly improves the detection efficiency and accuracy through innovative optical design and structural layout, and solves the problem of difficulty in comprehensive detection of pole piece burrs, especially longitudinal burrs in the prior art.

[0004] In order to achieve the above purpose, the technical scheme of the utility model is as follows:

[0005] A lithium / sodium battery pole piece burr detection device, comprising a pole piece body, two No. 2 reflectors are installed on the upper and lower sides of both ends of the pole piece body, the two No. 2 reflectors are at an angle of 45 degrees with the pole piece body, two No. 2 light sources are installed above and below the two No. 2 reflectors, the emitting end of the two No. 2 light sources corresponds to the position close to the pole piece body end of the two No. 2 reflectors, one No. 1 light source is installed above or below the edge of each end of the pole piece body, the emitted light of the one No. 1 light source is perpendicular to the pole piece body, one No. 1 reflector is installed on the side opposite to the pole piece body of the one No. 1 light source, the angle of the one No. 1 reflector is 45 degrees, wherein the emitted light of the one No. 1 light source and the two No. 2 light sources is parallel light; a light detection device for detecting the parallel light is installed on both sides of the pole piece body.

[0006] Further, the light detection device is a semi-transparent plate and an image acquisition camera, the semi-transparent plate is provided on both sides of the pole piece body, and the image acquisition camera is provided on the outside of the semi-transparent plate.

[0007] Further, the light detection device is a line array camera, and the line array camera is installed on both sides of the pole piece body.

[0008] Further, the light detection device is a photosensitive element, and the photosensitive element is a plurality of groups corresponding to the emitting light path positions of the one No. 1 light source and the two No. 2 light sources.

[0009] Further, the first light source and the second light source are UV LED parallel light sources, coaxial parallel light sources, xenon lamp light sources, mercury lamp light sources, LED point light sources or laser light sources.

[0010] Further, the pole piece body is attached with pressing plates on the upper and lower sides, and the second light-reflecting plates are installed on the two sides of the pressing plates.

[0011] Further, the pole piece body is conveyed to the space between the two pressing plates by the conveying roller.

[0012] Further, converging plates are installed on the front and rear sides of the pressing plates.

[0013] Beneficial effects: the present application significantly improves the detection efficiency and accuracy through innovative optical design and structural layout, and solves the problem that the existing technology cannot comprehensively detect the pole piece burrs, especially the longitudinal burrs. BRIEF DESCRIPTION OF DRAWINGS

[0014] The accompanying drawings, which form a part of this application, are included to provide a further understanding of the application and are incorporated in and constitute a part of this application. The embodiments of the present application illustrated in the drawings are presented by way of example or for purpose of explanation only. In the drawings:

[0015] Figure 1 Structure diagram of the lithium / sodium battery pole piece burr detection device Figure 1 (light detection device is a translucent plate, image acquisition camera);

[0016] Figure 2 Structure diagram of the lithium / sodium battery pole piece burr detection device Figure 2 (light detection device is a linear array camera);

[0017] Figure 3 Structure diagram of the lithium / sodium battery pole piece burr detection device Figure 3 (light detection device is a photosensitive element);

[0018] Figure 4 Side view structure diagram of the pressing plate part of the lithium / sodium battery pole piece burr detection device;

[0019] Figure 5 Side view working state diagram of the translucent plate of the lithium / sodium battery pole piece burr detection device. DETAILED DESCRIPTION

[0020] It should be noted that the embodiments in the utility model and the features in the embodiments can be combined with each other without conflict.

[0021] Embodiment 1

[0022] Referring to Figures 1-5 The lithium / sodium battery pole piece burr detection device comprises a pole piece body 1, two No. 2 reflectors 2 are installed on the upper and lower sides of the two ends of the pole piece body 1, the two No. 2 reflectors 2 are at an angle of 45 degrees with the pole piece body 1, a No. 2 light source 3 is installed above and below the two No. 2 reflectors 2, the emitting end of the No. 2 light source 3 corresponds to the position of the No. 2 reflector 2 close to the pole piece body 1, a No. 1 light source 4 is installed above or below the edge of each end of the pole piece body 1, the light emitted by the No. 1 light source 4 is perpendicular to the pole piece body 1, a No. 1 reflector 5 is installed on the side of the pole piece body 1 opposite to the No. 1 light source 4, the angle of the No. 1 reflector 5 is 45 degrees, wherein the light emitted by the No. 1 light source 4 and the No. 2 light source 3 is parallel light, and a light detection device for detecting the parallel light is installed on the two sides of the pole piece body 1.

[0023] It should be noted that when the light is emitted, it will be reflected by the No. 2 reflector and the No. 1 reflector, when the pole piece body moves, the burr on the edge of the pole piece body in the transverse direction will block the light path of the No. 1 light source, thereby causing the on-off signal of the light to change, when the pole piece body moves, the burr in the longitudinal direction will block the light path of the light reflected by the No. 2 reflector, thereby causing the light source to change, the above light path is detected by the light detection device, thereby realizing the detection of the burr in the transverse and longitudinal directions of the pole piece body.

[0024] Referring to Figure 5 The light spots from top to bottom are the projections of the No. 1 light source, the No. 2 light source on the upper side and the No. 2 light source on the lower side on the translucent plate, thereby, it can be known that through the design of the No. 1 and No. 2 light sources and the corresponding reflectors, the transverse burr and the longitudinal burr on the edge of the pole piece can be detected at the same time, and the defect that the previous technology can only detect the burr in a single direction is made up.

[0025] In a specific example, the light detection device is a translucent plate 6 and an image acquisition camera 7, the translucent plate 6 is arranged on the two sides of the pole piece body 1, and the image acquisition camera 7 is arranged outside the translucent plate 6.

[0026] It should be noted that the light path of the No. 1 light source and the No. 2 light source is reflected by the No. 1 reflector and the No. 2 reflector and then irradiates onto the translucent plate, thereby producing a projection on the translucent plate, the change of the projection on the translucent plate is collected by the image acquisition camera, whether the burr is generated on the pole piece body is judged, and the burr detection is realized.

[0027] In a specific example, the light detection device is a linear array camera 8, which is installed on both sides of the pole piece body 1.

[0028] In this embodiment, the linear array camera can capture the light reflected by the first light source and the second light source through the first reflector and the second reflector frame by frame, thereby realizing the detection of burrs.

[0029] In a specific example, the light detection device is a photosensitive element 9, which corresponds to the positions of the light emitting paths of the first light source 4 and the second light source 3.

[0030] It should be noted that, due to the shielding effect of the burr, the intensity of the light from the first light source and the second light source will be affected when the light passes through the burr part, thereby changing the output value of the photosensitive element, and then determining whether there is a burr according to the change, thereby realizing the detection of burrs. At this time, the light source can be a thin laser light source.

[0031] In a specific example, the first light source 4 and the second light source 3 are UV LED parallel light sources, coaxial parallel light sources, xenon lamp light sources, mercury lamp light sources, LED point light sources or laser light sources.

[0032] In this embodiment, UV LED parallel light sources, laser light sources and other high-efficiency light sources are used, which not only ensure the stability and directionality of the light source, but also adapt to the detection needs of pole pieces made of different materials, improve the penetration and detection accuracy of the light path, and make the burr detection more efficient and accurate.

[0033] In a specific example, the pole piece body 1 is attached to the two sides of the pressing plate 10, and the second reflector 2 is installed on both sides of the pressing plate 10.

[0034] In this embodiment, the pressing plate is used to attach the pole piece body, and at the same time, the bottom of the second reflector is made closer to the pole piece body, so that the light deflected by the second light source through the second reflector is more attached to the pole piece body, thereby facilitating the detection of longitudinal burrs. The pressing plate can be made of ceramic material.

[0035] In a specific example, the pole piece body 1 is conveyed between the two pressing plates 10 by a conveying roller.

[0036] In a specific example, the converging plate 11 is installed on both sides of the pressing plate 10.

[0037] The converging plate of this embodiment can guide the pole piece, thereby facilitating the conveying of the pole piece body between the two pressing plates by the conveying roller for burr detection. The converging plate can also be made of ceramic material.

[0038] The beneficial effects of this embodiment mainly lie in the following aspects:

[0039] 1. Comprehensive burr detection capability: The burr detection device of the embodiment innovatively combines the design of the first and second light sources and their corresponding reflectors, which can detect both the horizontal and vertical burrs on the edge of the pole piece, making up for the defect of the previous technology that can only detect burrs in a single direction, greatly improving the comprehensiveness and accuracy of the detection, and effectively preventing battery safety hazards caused by burrs.

[0040] 2. High sensitivity and non-contact detection: The existence of burrs is indirectly detected by using the change of light on-off signal or light intensity. This non-contact detection method avoids physical damage to the pole piece, and through the high-sensitivity light detection device (such as a semi-transparent plate, an image acquisition camera, a linear array camera, and a photosensitive element), it ensures immediate and accurate burr identification, improving the sensitivity and reliability of the detection.

[0041] 3. Optimized light source design: The use of UV LED parallel light source, laser light source and other high-efficiency light sources not only ensures the stability and directionality of the light source, but also adapts to the detection needs of pole pieces of different materials, improves the penetration of the light path and the detection accuracy, and makes the burr detection more efficient and accurate.

[0042] 4. Structure optimization to improve detection adhesion: Through the design of the pressing plate and the converging plate, the pole piece is effectively guided to pass through the detection area smoothly, and the distance between the reflector and the pole piece is optimized, so that the light is more closely attached to the surface of the pole piece, greatly enhancing the detection capability of the longitudinal burrs. The selection of ceramic material takes into account the low conductivity and wear resistance, ensuring the stability and safety of long-term use.

[0043] 5. Easy to integrate and maintain: The structure design of the embodiment considers practicability and ease of use, is easy to integrate with other automated production lines, has low maintenance cost, can quickly respond to real-time monitoring needs of the pole piece quality on the production line, and improves production efficiency and product quality control level.

[0044] In summary, the lithium / sodium battery pole piece burr detection device of the embodiment realizes comprehensive, efficient and accurate detection of pole piece burrs through innovative optical detection technology and structural optimization design, provides an important quality assurance means for lithium / sodium battery manufacturing, and has positive significance for promoting the development of new energy industry.

[0045] The above is only a preferred embodiment of the present application, and is not intended to limit the present application. Any modification, equivalent replacement, improvement, etc. made within the spirit and principles of the present application shall be included in the protection scope of the present application.

Claims

1. A burr detection device for lithium / sodium battery electrodes, characterized in that, The device includes an electrode body (1), with two reflectors (2) installed on both the upper and lower sides of the electrode body (1). The reflectors (2) are at a 45-degree angle to the electrode body (1). Two light sources (3) are installed above and below the reflectors (2) on both the upper and lower sides. The emission end of the light source (3) corresponds to the position of the reflector (2) near the electrode body (1). A light source (4) is installed above or below the edges of both ends of the electrode body (1). The light emitted by the light source (4) is perpendicular to the electrode body (1). A reflector (5) is installed on the opposite side of the electrode body (1) of the light source (4). The angle of the reflector (5) is 45 degrees. The light emitted by the light source (4) and the light source (3) is parallel light. A light detection device for detecting the parallel light is installed on both sides of the electrode body (1).

2. The lithium / sodium battery electrode burr detection device according to claim 1, characterized in that, The light detection device consists of a semi-transparent plate (6) and an image acquisition camera (7). The semi-transparent plate (6) is located on both sides of the electrode body (1), and the image acquisition camera (7) is located on the outside of the semi-transparent plate (6).

3. The lithium / sodium battery electrode burr detection device according to claim 1, characterized in that, The light detection device is a line array camera (8), which is installed on both sides of the electrode body (1).

4. The lithium / sodium battery electrode burr detection device according to claim 1, characterized in that, The light detection device is a photosensitive element (9), and the photosensitive element (9) consists of several groups, corresponding to the position of the emitted light path of the first light source (4) and the second light source (3).

5. The lithium / sodium battery electrode burr detection device according to claim 1, characterized in that, The first light source (4) and the second light source (3) are UV LED parallel light sources, coaxial parallel light sources, xenon lamp light sources, mercury lamp light sources, LED point light sources or laser light sources.

6. The lithium / sodium battery electrode burr detection device according to claim 1, characterized in that, The electrode body (1) is fitted with pressure plates (10) on both the upper and lower sides, and the second reflector (2) is installed on both sides of the pressure plates (10).

7. The lithium / sodium battery electrode burr detection device according to claim 6, characterized in that, The electrode body (1) is conveyed between two pressure plates (10) by a conveyor roller.

8. The lithium / sodium battery electrode burr detection device according to claim 7, characterized in that, Converging plates (11) are installed on the front and rear sides of the pressure plate (10).

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