Lug defect detection light source

Abstract

The utility model relates to the technical field of machine vision detection, and discloses a tab defect detection light source which comprises a diffusion plate and two lamp plates, the diffusion plate is arranged in an arch shape in the first direction, and the first direction is one of the length direction and the width direction of the diffusion plate. The two lamp panels are arranged in parallel, one lamp panel is located at one end of the diffusion panel in the first direction, and the other lamp panel is located at the other end of the diffusion panel in the first direction; a light outlet is formed between the two lamp panels, and the light emitting direction of the lamp panels faces the diffusion face of the diffusion panel. According to the utility model, the diffusion plate is designed to be arch-shaped, and the light emitted by the lamp panel passes through the diffusion plate to form diffused light to irradiate the tabs, so that the shadow generated by slight wrinkles of the tabs can be well eliminated, and the folded shadow cannot be eliminated, thereby clearly and comprehensively presenting the real state of each layer of tabs; the defects of the tabs can be accurately identified, and the safety and the reliability of the battery cell are ensured.

Description

Technical Field

[0001] The utility model relates to the technical field of machine vision detection, in particular to a light source for detecting tab defects. Background Art

[0002] The folding phenomenon of tabs has a direct and non-negligible impact on the overall safety of the battery cell. To ensure the quality and reliability of the battery cell, the detection of tabs is particularly important. Currently, the detection of tab defects is generally carried out at the winding station of the battery cell, and each layer of tabs is detected in detail. It should be noted that the industry usually uses a linear light source as the lighting method. This linear light source exposes its limitations during the detection process. Especially when there are wrinkles or folds in the tabs, the lighting effect of the linear light source is often not satisfactory, and it is difficult to clearly and comprehensively present the true state of each layer of tabs. This undoubtedly poses a great challenge to defect detection and may lead to potential quality problems being overlooked.

[0003] Therefore, it is necessary to improve the existing technology.

[0004] The above information is given as background information only to assist in understanding the present disclosure, and does not determine or admit whether any of the above content can be used as the prior art relative to the present disclosure. Summary of the Utility Model

[0005] The utility model provides a light source for detecting tab defects to solve the problems existing in the prior art.

[0006] To achieve the above object, the utility model provides the following technical solutions:

[0007] A light source for detecting tab defects includes a diffuser and two lamp boards; wherein,

[0008] The diffuser is arranged in an arch shape along a first direction, and the first direction is one of the length direction or the width direction of the diffuser;

[0009] The two lamp boards are arranged in parallel, one of the lamp boards is located at one end of the diffuser along the first direction, and the other lamp board is located at the other end of the diffuser along the first direction;

[0010] A light outlet is formed between the two lamp boards, and the light emitting direction of the lamp board faces the diffusing surface of the diffuser.

[0011] Further, in the light source for detecting tab defects, the diffuser includes a substrate and a diffusing layer provided on the substrate;

[0012] The substrate is adhesively connected to the diffusing layer;

[0013] The diffusing layer has a diffusing surface.

[0014] Further, in the ear tab defect detection light source, the diffuser plate includes a substrate, and the surface of the substrate facing the lamp board is a diffused surface obtained by surface roughening treatment.

[0015] Further, in the ear tab defect detection light source, an imaging hole is formed in the diffuser plate at a position corresponding to the light outlet.

[0016] Further, the ear tab defect detection light source further includes two end plates;

[0017] One of the end plates is located at one end of the diffuser plate along the second direction, and the other end plate is located at the other end of the diffuser plate along the second direction; the second direction is a direction different from the first direction in the length direction or width direction of the diffuser plate.

[0018] Further, the ear tab defect detection light source further includes two heat dissipation modules;

[0019] One of the heat dissipation modules is disposed at the bottom of one of the lamp boards, and the other heat dissipation module is disposed at the bottom of one of the lamp boards.

[0020] Further, in the ear tab defect detection light source, the heat dissipation module is any one of an air cooling module, a water cooling module, and a gas cooling module.

[0021] Further, in the ear tab defect detection light source, the gas cooling module includes an air inlet and an air outlet;

[0022] The air outlet of one of the gas cooling modules is connected to the air inlet of the other gas cooling module.

[0023] Further, in the ear tab defect detection light source, a labyrinth cooling circuit is provided inside the gas cooling module;

[0024] One end of the labyrinth cooling circuit is communicated with the air inlet, and the other end is communicated with the air outlet.

[0025] Further, in the ear tab defect detection light source, the heat dissipation module is detachably connected to the lamp board.

[0026] Compared with the prior art, the present utility model has the following beneficial effects:

[0027] A light source for detecting tab defects provided by the present utility model includes a diffuser plate and two lamp boards. By designing the diffuser plate into an arch shape and allowing the light emitted by the lamp boards to form diffused light after passing through the diffuser plate and irradiate the tabs, the shadows generated by slight wrinkles of the tabs can be well eliminated, while the folded shadows will not be eliminated, so as to clearly and comprehensively present the true state of each layer of tabs, which is beneficial to accurately identifying the defects of the tabs and ensuring the safety and reliability of the battery cell.

[0028] The present utility model has other characteristics and advantages, which will be obvious from the accompanying drawings incorporated herein and the subsequent detailed description, or will be described in detail in the accompanying drawings incorporated herein and the subsequent detailed description. These accompanying drawings and detailed description are jointly used to explain the specific principles of the present utility model. Brief Description of the Drawings

[0029] In order to more clearly illustrate the technical solutions in the embodiments of the present utility model or the prior art, the following will briefly introduce the accompanying drawings required for use in the description of the embodiments or the prior art. Obviously, the following described accompanying drawings are only some embodiments of the present utility model. For those of ordinary skill in the art, without creative efforts, other accompanying drawings can also be obtained based on these drawings.

[0030] Figure 1 is a schematic (three-dimensional) structure diagram of a light source for detecting tab defects provided by an embodiment of the present utility model;

[0031] Figure 2 is a schematic (three-dimensional) structure diagram of the diffuser plate provided by an embodiment of the present utility model;

[0032] Figure 3 is a schematic (three-dimensional) structure diagram of a light source for detecting tab defects provided by an embodiment of the present utility model;

[0033] Figure 4 is a schematic (front view) structure diagram of a light source for detecting tab defects provided by an embodiment of the present utility model;

[0034] Figure 5 is a schematic (three-dimensional) structure diagram of a light source for detecting tab defects provided by an embodiment of the present utility model.

[0035] Reference Signs:

[0036] Diffuser plate 1, lamp board 2, light outlet 3, diffused surface 4, imaging hole 5, end plate 6, heat dissipation module 7. Detailed Description of the Embodiments

[0037] To elaborate on the possible application scenarios, technical principles, specific implementable solutions, achievable objectives and effects of this application in detail, the following will be described in detail with reference to the specific examples listed and in conjunction with the accompanying drawings. The embodiments described herein are only used to more clearly illustrate the technical solutions of this application, so they are only examples and cannot be used to limit the protection scope of this application.

[0038] As used herein, the term "embodiment" means that the specific features, structures or characteristics described in connection with the embodiment may be included in at least one embodiment of this application. The term "embodiment" that appears in various positions in the specification does not necessarily refer to the same embodiment, nor does it particularly limit its independence or relevance to other embodiments. In principle, in this application, as long as there is no technical contradiction or conflict, the various technical features mentioned in each embodiment can be combined in any way to form the corresponding implementable technical solutions.

[0039] Unless otherwise defined, the meanings of the technical terms used herein are the same as those generally understood by those skilled in the technical field to which this application belongs; the use of the relevant terms herein is only for describing specific embodiments and is not intended to limit this application.

[0040] In the description of this application, the term "and / or" is an expression used to describe the logical relationship between objects, indicating that there can be three relationships. For example, A and / or B means: A exists, B exists, and both A and B exist at the same time. In addition, the character " / " in this text generally represents an "or" logical relationship between the associated objects before and after.

[0041] In this application, terms such as "first" and "second" are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual quantity, primary or secondary, or order relationship between these entities or operations.

[0042] Without more limitations, in this application, the expressions such as "including", "comprising", "having" or other similar expressions used in the statement are intended to cover non-exclusive inclusion. These expressions do not exclude that there may be other elements in the process, method or product including the said elements, so that the process, method or product including a series of elements may not only include those defined elements, but also include other elements not explicitly listed, or also include elements inherent to this process, method or product.

[0043] Similar to the understanding in the Examination Guidelines, in this application, expressions such as "greater than", "less than", "exceeding", etc. are understood to exclude the base number; expressions such as "above", "below", "within", etc. are understood to include the base number. In addition, in the description of the embodiments of this application, the meaning of "a plurality of" is two or more (including two), and similar expressions related to "many" are understood in the same way, such as "multiple groups", "multiple times", etc., unless otherwise specifically and clearly defined.

[0044] In the description of the embodiments of this application, the spatially related expressions used, such as "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "perpendicular", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc., the indicated orientation or positional relationship is based on the orientation or positional relationship shown in the specific embodiment or the drawing, and is only for the convenience of describing the specific embodiments of this application or for the reader to understand, rather than indicating or implying that the device or component referred to must have a specific position, a specific orientation, or be constructed or operated in a specific orientation. Therefore, it should not be construed as a limitation on the embodiments of this application.

[0045] Unless otherwise clearly specified or limited, in the description of the embodiments of this application, the terms "installed", "connected", "joined", "fixed", "set", etc. should be understood in a broad sense. For example, the "connection" can be a fixed connection, a detachable connection, or an integral setting; it can be a mechanical connection, an electrical connection, or a communication connection; it can be directly connected, or indirectly connected through an intermediate medium; it can be the communication inside two elements or the interaction relationship between two elements. For those skilled in the art to which this application belongs, the specific meanings of the above terms in the embodiments of this application can be understood according to specific circumstances.

[0046] In view of the defects existing in the above-mentioned prior art, based on the rich practical experience and professional knowledge of the applicant in designing and manufacturing such products for many years, and in cooperation with the application of theory, the applicant actively conducts research and innovation in the hope of creating a technology that can solve the defects in the prior art. After continuous research, design, and repeated trial production of samples and improvement, a truly practical and valuable utility model of the present invention has finally been created.

[0047] Please refer to Figures 1-5 , an ear tab defect detection light source is provided in an embodiment of the present utility model, including a diffuser plate 1 and two lamp plates 2; wherein,

[0048] The diffuser plate 1 is arched along a first direction, and the first direction is one of the length direction or the width direction of the diffuser plate 1; this shape can effectively disperse the light from the lamp plate 2, making the light irradiate on the ear tab more evenly.

[0049] The two light boards 2 are arranged in parallel. One of the light boards 2 is located at one end of the diffuser plate 1 along the first direction, and the other light board 2 is located at the other end of the diffuser plate 1 along the first direction; this design ensures that the light can evenly cover the entire surface of the diffuser plate 1, further improving the uniformity of the light distribution.

[0050] An light outlet 3 is formed between the two light boards 2, and the light-emitting direction of the light board 2 faces the diffusing surface 4 of the diffuser plate 1. This design can ensure that the light is scattered by the diffuser plate 1 to the greatest extent and evenly projected onto the tab.

[0051] It should be noted that in this embodiment, an arched diffuser plate is innovatively designed, and this design cleverly utilizes the principle of light diffusion. Specifically, the light emitted by the two light boards is diffusely reflected by the diffusing surface of the arched diffuser plate, obtaining a uniform diffusion effect. This diffused light can comprehensively and clearly illuminate the tab, effectively presenting the true state of each layer of the tab. In particular, this design can significantly eliminate the shadows generated by slight wrinkles of the tab, while retaining the shadows generated by obvious defects such as folding, thereby greatly improving the accuracy of tab defect recognition. By adopting the diffuser plate design of this embodiment, the defects of the tab can be detected more accurately, thereby ensuring the safety and reliability of the battery cell, and providing an efficient and reliable detection solution for the battery manufacturing industry.

[0052] In this embodiment, for the structural design of the diffuser plate 1, two specific implementation methods are provided.

[0053] The first implementation method:

[0054] The diffuser plate 1 is composed of a substrate and a diffusing layer provided on the substrate. The substrate and the diffusing layer are fixed together by an adhesive connection to form an integral structure. The diffusing layer has a specific diffusing surface 4, which is used to receive the light from the light board 2 and diffuse it, thereby achieving uniform distribution of the light.

[0055] This design method provides the function of light diffusion through a special diffusing layer, which can ensure that the light has high uniformity and diffusibility when projected onto the tab, thereby more accurately detecting the defects of the tab.

[0056] The second implementation method:

[0057] The diffuser plate 1 is only composed of a substrate, and a certain surface of the substrate (i.e., the surface facing the light board 2) forms a diffusing surface 4 through a texturing process. This texturing process can form a micro-convex structure on the surface of the substrate, thereby having a light diffusion effect similar to that of a diffusing layer.

[0058] This design method simplifies the structure of the diffuser plate and reduces the production cost. At the same time, the diffused surface 4 obtained by the matting treatment can also achieve uniform diffusion of light, providing clear and comprehensive lighting conditions for the tab defect detection.

[0059] Regardless of which implementation method is adopted, the design of the diffuser plate 1 aims to improve the uniformity and diffusibility of light distribution in order to better detect tab defects. These two implementation methods have their own advantages and disadvantages, and the specific choice should be weighed according to actual requirements and production conditions.

[0060] Please refer to again Figures 2-3 , in this embodiment, in order to cooperate with the visual inspection of tab defects, a imaging hole 5 is specially designed and opened at the position of the diffuser plate 1 corresponding to the light outlet 3 formed by the lamp board 2. This design enables the camera or other imaging device of the detection equipment to capture the tab image under the light evenly diffused by the diffuser plate 1 through the imaging hole 5. In this way, it can be ensured that the imaging device obtains a clear, comprehensive and uniform tab image, so as to more accurately identify and evaluate the defect state of the tab. This design further improves the accuracy and efficiency of the detection, providing a strong guarantee for the safety and reliability of the battery cell.

[0061] Please refer to again Figure 5 , in this embodiment, in order to further improve the structure of the tab defect detection light source and increase its stability and functionality, the design of two end plates 6 is specially introduced.

[0062] Specifically, one end plate 6 is arranged at one end of the diffuser plate 1 along the second direction, and the other end plate 6 is located at the other end of the diffuser plate 1 along the second direction. The second direction mentioned here refers to the length direction or width direction of the diffuser plate 1, which is the other direction different from the previously mentioned first direction. Such a design makes the two end plates 6 located at both ends of the diffuser plate 1 respectively, forming a clamping or supporting structure.

[0063] By introducing two end plates 6, the overall structure of the tab defect detection light source is enhanced. The end plate 6 can not only provide additional stability and support force to prevent the diffuser plate 1 from deforming or displacing during use, thus ensuring the accuracy and consistency of light projection. In addition, the end plate 6 can also serve as the installation base for other components (such as lamp boards, power cords, etc.), further improving the integration and functionality of the entire detection system.

[0064] Please refer to again Figures 3-5, in this embodiment, in order to ensure the stability and reliability of the ear tab defect detection light source, the design of the heat dissipation module 7 is particularly introduced. Specifically, the ear tab defect detection light source includes two heat dissipation modules 7, one of which is disposed at the bottom of one of the lamp boards 2, and the other heat dissipation module 7 is disposed at the bottom of the other lamp board 2.

[0065] The lamp board 2 generates a certain amount of heat during long-term operation. If the heat is not dissipated in time, it may cause the temperature of the lamp board 2 to be too high, which in turn affects its performance and lifespan. Therefore, the introduction of the heat dissipation module 7 is crucial for ensuring the normal operation of the lamp board 2.

[0066] The heat dissipation module 7 can achieve the heat dissipation function in various ways, aiming to quickly dissipate the heat generated by the lamp board 2 into the surrounding environment. This design can effectively reduce the temperature of the lamp board 2 and keep it operating within a suitable temperature range, thereby improving the accuracy and stability of ear tab defect detection.

[0067] In this embodiment, in order to meet different working environments and heat dissipation requirements, multiple options are provided for the heat dissipation module 7 of the ear tab defect detection light source. Specifically, the heat dissipation module 7 can be any one of an air-cooled module, a water-cooled module, or a gas-cooled module.

[0068] Air-cooled module: The air-cooled module is a common heat dissipation method. It uses a fan to generate an air flow, and the heat generated by the lamp board 2 is carried away by the air flow. The air-cooled module has a simple structure, is easy to install, and has a relatively low cost, making it suitable for heat dissipation requirements under general working conditions.

[0069] Water-cooled module: The water-cooled module dissipates heat through water circulation. Its heat dissipation effect is usually better than that of the air-cooled module. It uses a coolant to circulate inside the radiator, transferring the heat generated by the lamp board 2 to the radiator and carrying away the heat through the coolant. The water-cooled module has a high heat dissipation efficiency and is suitable for the heat dissipation requirements of high-power and high-heat lamp boards.

[0070] Gas-cooled module: The gas-cooled module uses gases such as compressed air or nitrogen for heat dissipation. It carries away the heat generated by the lamp board 2 through gas flow and is usually suitable for occasions where liquid leakage needs to be avoided or there are strict environmental requirements. The gas-cooled module has a stable heat dissipation effect and does not introduce additional liquids, making it suitable for heat dissipation requirements in special working environments.

[0071] According to the actual application scenario and heat dissipation requirements, a suitable heat dissipation module 7 can be selected to ensure the stability and reliability of the ear tab defect detection light source. The selection and application of these heat dissipation modules enable the ear tab defect detection light source in this embodiment to maintain excellent performance under various working conditions.

[0072] In this embodiment, when the heat dissipation module 7 adopts an air-cooling module, in order to improve the heat dissipation efficiency and energy utilization efficiency, a specific air path connection structure is designed. Specifically, the air-cooling module includes an air inlet and an air outlet, and the air outlet of one air-cooling module is directly connected to the air inlet of another air-cooling module, forming a communication structure between the two air-cooling modules.

[0073] This design allows the cooling gas to circulate between the two air-cooling modules, thereby achieving effective heat transfer and heat dissipation. When the first air-cooling module inhales the cooling gas through the air inlet and blows it towards the lamp board 2 for heat dissipation, the gas then exits from the air outlet. This part of the gas is then introduced into the air inlet of the second air-cooling module for another cooling and heat dissipation cycle.

[0074] Through the communication design of the two air-cooling modules, not only can the utilization efficiency of the cooling gas be improved, but also the heat dissipation system of the entire tab defect detection light source can be made more stable and efficient. This design is particularly suitable for scenarios with high heat dissipation requirements, can effectively extend the service life of the lamp board 2, and improve the accuracy and reliability of tab defect detection.

[0075] In this embodiment, in order to further improve the heat dissipation effect of the air-cooling module, a labyrinth cooling circuit is designed inside it. This design enables the cooling gas to pass through a longer path inside the air-cooling module, thereby more fully exchanging heat with the heat generated by the lamp board.

[0076] Specifically, one end of the labyrinth cooling circuit is connected to the air inlet, and the other end is connected to the air outlet. When the cooling gas enters the air-cooling module from the air inlet, it will flow along the labyrinth cooling circuit, gradually passing near the lamp board and taking away the heat. Due to the meandering design of the cooling circuit, the cooling gas will come into contact with the lamp board multiple times during the flow process, thereby maximizing the heat exchange efficiency.

[0077] The design of this labyrinth cooling circuit not only improves the heat dissipation effect, but also helps to reduce the flow rate of the cooling gas, reduce noise and energy consumption. In addition, since the cooling gas circulates inside the air-cooling module, it also prevents the entry of external dust and impurities, ensuring the cleanliness and heat dissipation effect inside the air-cooling module.

[0078] In this embodiment, in order to improve the flexibility and maintainability of the heat dissipation module 7, a detachable connection method is specifically designed, enabling the heat dissipation module 7 and the lamp board 2 to be easily disassembled and installed.

[0079] This detachable connection design allows users to remove or install the heat dissipation module 7 from the lamp board 2 at any time according to actual needs or maintenance requirements. For example, when the heat dissipation module 7 malfunctions or needs to be cleaned, users can easily remove it for repair or replacement. Similarly, when the lamp board 2 needs to be replaced or upgraded, the heat dissipation module 7 can also be removed first, and then the replacement or upgrade operation of the lamp board 2 can be carried out.

[0080] By adopting the detachable connection design, the tab defect detection light source in this embodiment not only has higher flexibility and maintainability, but also can effectively extend its service life. In addition, this design also makes the replacement and upgrade of the heat dissipation module 7 and the lamp board 2 simpler and more convenient, providing a better user experience.

[0081] Although terms such as diffuser plate, lamp board, light outlet, diffused surface, imaging hole, etc. are used more frequently in this application, the possibility of using other terms is not excluded. These terms are only used to more conveniently describe and explain the essence of the present utility model; interpreting them as any additional limitation is contrary to the spirit of the present utility model.

[0082] A tab defect detection light source provided by the present utility model includes a diffuser plate and two lamp boards. By designing the diffuser plate into an arched shape and allowing the light emitted by the lamp boards to form diffused light after passing through the diffuser plate and irradiate the tabs, the shadows generated by slight wrinkles of the tabs can be well eliminated, while the folded shadows will not be eliminated, so as to clearly and comprehensively present the true state of each layer of tabs, which is beneficial to accurately identifying the defects of the tabs and ensuring the safety and reliability of the battery cell.

[0083] Finally, it should be noted that although the above embodiments have been described in the text and drawings of the specification of this application, the patent protection scope of this application cannot be limited thereby. Any technical solutions obtained by equivalent structure or equivalent process substitution or modification based on the essential concept of this application and using the content recorded in the text and drawings of the specification of this application, as well as directly or indirectly implementing the technical solutions of the above embodiments in other related technical fields, are all included in the patent protection scope of this application.

Claims

1. An ear tab defect detection light source, characterized in that, It includes a diffuser plate (1) and two lamp boards (2); wherein, The diffuser plate (1) is arched along a first direction, and the first direction is one of the length direction or the width direction of the diffuser plate (1); The two lamp boards (2) are arranged in parallel. One of the lamp boards (2) is located at one end of the diffuser plate (1) along the first direction, and the other lamp board (2) is located at the other end of the diffuser plate (1) along the first direction; A light outlet (3) is formed between the two lamp boards (2), and the light emitting direction of the lamp board (2) faces the diffusing surface (4) of the diffuser plate (1).

2. The ear tab defect detection light source according to claim 1, characterized in that, The diffuser plate (1) includes a substrate and a diffusing layer provided on the substrate; The substrate is adhesively connected to the diffusing layer; The diffusing layer has a diffusing surface (4).

3. The tab defect detection light source according to claim 1, characterized in that, The diffuser plate (1) includes a substrate, and the surface of the substrate facing the lamp board (2) is a diffusing surface (4) obtained by surface roughening treatment.

4. The tab defect detection light source according to claim 1, wherein An imaging hole (5) is formed in the diffuser plate (1) at a position corresponding to the light outlet (3).

5. The ear tab defect detection light source according to claim 1, characterized in that, It further includes two end plates (6); One of the end plates (6) is located at one end of the diffuser plate (1) along a second direction, and the other end plate (6) is located at the other end of the diffuser plate (1) along the second direction; the second direction is the direction different from the first direction among the length direction or the width direction of the diffuser plate (1).

6. The tab defect detection light source according to claim 1, characterized in that It further includes two heat dissipation modules (7); One of the heat dissipation modules (7) is arranged at the bottom of one of the lamp boards (2), and the other heat dissipation module (7) is arranged at the bottom of one of the lamp boards (2).

7. The tab defect detection light source according to claim 6, wherein The heat dissipation module (7) is any one of an air-cooling module, a water-cooling module, and a gas-cooling module.

8. The ear tab defect detection light source according to claim 7, characterized in that, The gas-cooling module includes an air inlet and an air outlet; The air outlet of one of the gas-cooling modules is connected to the air inlet of the other gas-cooling module.

9. The ear tab defect detection light source according to claim 8, wherein A labyrinth cooling circuit is arranged inside the gas-cooling module; One end of the labyrinth cooling circuit is communicated with the air inlet, and the other end is communicated with the air outlet.

10. The tab defect detection light source according to claim 6, wherein, The heat dissipation module (7) is detachably connected to the lamp board (2).

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