A detection tool for a new energy battery cover plate

Abstract

The utility model discloses a detection tool for new energy battery cover plate belongs to new energy battery cover plate production detection technical field, and this device is used for new energy battery cover plate, and the both ends of new energy battery cover plate surface are equipped with positive pole and negative pole respectively, and the outside of pole post is equipped with insulating plate (including ear -like convex) correspondingly. The device includes base, and the base surface is equipped with the product positioning groove that is matched with the appearance of new energy battery cover plate, and in the product positioning groove, the first detection groove and second detection groove are equipped with the theoretical installation position of corresponding positive pole and negative pole, and the shape of first detection groove, second detection groove is matched with the shape profile of the outside insulating plate of positive pole and negative pole respectively. The utility model is used to solve the technical problem that the ear -like convex angle detection efficiency of insulating plate of new energy battery cover plate is low in the prior art, is easily affected by subjective factor, and the high rate of missing detection, and the technical problem that cannot adapt to the demand of fast accurate detection of large -scale production.

Description

Technical Field

[0001] This utility model relates to the field of production and testing technology of new energy battery cover plates, and in particular to a testing fixture for new energy battery cover plates. Background Technology

[0002] As a core component in new energy vehicles and energy storage equipment, the performance and safety of new energy batteries directly depend on the assembly precision of each component. The battery cover, as a key structure for battery sealing and terminal lead-out, requires particularly strict quality control during production. The insulating plate of the battery cover typically has two ear-shaped protrusions. This structure is the core connection point for the snap-fit ​​fixing of the insulating plate and the cover plate. The angular accuracy of these protrusions directly affects the structural stability and insulation reliability after assembly. An angular deviation can lead to incomplete snap-fit ​​assembly, resulting in risks such as sealing failure and abnormal current transmission. Therefore, the angle of the ear-shaped protrusions must be strictly tested during the production process.

[0003] Currently, the industry commonly uses manual visual inspection or random sampling with general measuring tools such as angle gauges to inspect the angles of ear-shaped protrusions on insulating boards. However, manual visual inspection relies on the operator's experience and judgment, which is easily affected by factors such as visual fatigue and subjective perception differences. This not only results in poor consistency of inspection results but also carries a high risk of missed inspections. On the other hand, measuring with general measuring tools requires precise readings of the angles of each ear-shaped protrusion, which is cumbersome and time-consuming for single-piece inspection, making it difficult to adapt to the fast-paced requirements of large-scale production of new energy battery cover plates. In addition, existing inspection methods cannot achieve efficient "on-demand" inspection, failing to meet the dual requirements of inspection efficiency and accuracy on the production line. Therefore, a specific inspection solution for this scenario is urgently needed to solve the above problems. Utility Model Content

[0004] This utility model provides a testing fixture for new energy battery cover plates, aiming to solve the technical problems in the prior art of low efficiency, susceptibility to subjective factors, high false negative rate, and inability to meet the needs of rapid and accurate testing in large-scale production for detecting the ear-shaped protrusion angle of the insulating plate of new energy battery cover plates.

[0005] To address the aforementioned problems, this utility model provides a testing fixture for a new energy battery cover plate. The cover plate has a positive electrode post and a negative electrode post at both ends, and an insulating plate is correspondingly provided on the outer side of each positive and negative electrode post. The insulating plate includes ear-shaped protrusions. The fixture includes: The base has a product positioning groove on its surface that matches the shape of the new energy battery cover. The product positioning groove has a first detection groove corresponding to the theoretical installation position of the positive electrode post and a second detection groove corresponding to the theoretical installation position of the negative electrode post. The shapes of the first detection groove and the second detection groove are respectively matched with the shape and outline of the outer insulating plate of the positive electrode post and the negative electrode post.

[0006] The present invention provides a testing fixture for the cover plate of new energy batteries, which, compared with the prior art, has the following beneficial effects, but is not limited to: 1. The base serves as the fundamental support component of the entire testing fixture, providing a stable mounting carrier for the product positioning slot and testing groove. This ensures the overall stability of the fixture during testing and prevents testing errors caused by fixture shaking. The product positioning slot on the base surface matches the shape of the new energy battery cover, enabling quick and accurate positioning of the battery cover to be tested without additional adjustment of the cover position, reducing positioning time and avoiding misjudgment caused by cover misplacement, thus laying the foundation for accurate subsequent testing.

[0007] 2. The first and second detection grooves, corresponding to the theoretical installation positions of the positive and negative terminals, are precisely matched in shape with the outline of the corresponding side insulation plate within the product positioning groove. When the angle of the ear-shaped protrusion is qualified, the insulation plate can be smoothly embedded into the corresponding detection groove, and the battery cover can be completely placed into the product positioning groove. The operator can quickly determine whether the product is qualified by observing whether the cover is completely placed. When the angle of the ear-shaped protrusion is off, the protrusion will mechanically interfere with the side wall of the detection groove, preventing the battery cover from being completely placed, which directly reflects that the product is unqualified.

[0008] 3. The above-mentioned technical features work together to enable the positioning groove to achieve rapid and accurate positioning, and the detection groove to achieve intuitive identification of angular deviation through contour matching and mechanical interference principles. No manual visual judgment or general measuring tools are required. This not only avoids missed detections and misjudgments caused by subjective factors, but also shortens the single-piece inspection time to "immediate judgment upon placement", significantly improving inspection efficiency and perfectly adapting to the fast-paced requirements of large-scale production of new energy battery cover plates.

[0009] Furthermore, an explosion-proof valve is provided between the positive and negative terminals, and a through hole is provided on the product positioning groove, the through hole corresponding to the shape and position of the explosion-proof valve.

[0010] Furthermore, the edges of the through hole are chamfered.

[0011] Furthermore, the depth of the product positioning groove is equal to the thickness of the new energy battery cover, so that the top surface of the new energy battery cover is flush with the top surface of the base after it is fully inserted.

[0012] Furthermore, the depths of the first detection groove and the second detection groove are not less than the heights of the positive electrode post and the negative electrode post, respectively.

[0013] Furthermore, the base has pick-up and place grooves on both sides, which are connected to the product positioning groove, and the depth of the pick-up and place grooves extends to below the bottom of the product positioning groove.

[0014] Furthermore, the surface of the base near the first detection groove is marked with a "positive electrode" symbol, and the surface near the second detection groove is marked with a "negative electrode" symbol.

[0015] Furthermore, the gap between the inner wall of the first detection groove and the second detection groove and the corresponding insulating plate is 0.05-0.1mm.

[0016] Furthermore, the inner walls of both the first and second detection grooves are polished.

[0017] Furthermore, the bottom of the base is provided with an anti-slip rubber pad. Attached Figure Description

[0018] Figure 1 A schematic diagram of the usage status of a testing fixture for a new energy battery cover provided by this utility model; Figure 2 A schematic diagram of the new energy battery cover structure provided by this utility model; Figure 3 This utility model provides a schematic diagram of a testing fixture structure for a new energy battery cover plate.

[0019] Explanation of reference numerals in the attached figures: 1. New energy battery cover plate; 2. Testing fixture; 11. Positive terminal; 12. Negative terminal; 13. Explosion-proof valve; 14. Insulating plate; 21. Base; 22. Product positioning groove; 23. First testing groove; 24. Second testing groove; 25. Pick-up and drop groove; 26. Through hole. Detailed Implementation

[0020] To make the objectives, technical solutions, and advantages of this application clearer, the technical solutions in the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings showing multiple embodiments according to this application. It should be understood that the described embodiments are only a part of the embodiments of this application, and not all of the embodiments. All other embodiments obtained by those skilled in the art based on the embodiments described in this application without creative effort will fall within the scope of protection of this application.

[0021] Unless otherwise defined, all technical and scientific terms used in this application have the same meaning as commonly understood by one of ordinary skill in the art to which this application pertains; the terminology used in the description of this application is for the purpose of describing specific embodiments only and is not intended to limit this application; the terms "comprising," "including," "having," "containing," etc., in the description, claims, and accompanying drawings of this application are open-ended terms. Therefore, "comprising," "including," or "having" refers to, for example, a method or apparatus having one or more steps or elements, but is not limited to having only these one or more elements. The terms "first," "second," etc., in the description, claims, or accompanying drawings of this application are used to distinguish different objects, not to describe a specific order or hierarchy. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this application, unless otherwise stated, "a plurality of" means two or more.

[0022] In the description of this invention, it should be understood that the terms "upper", "lower", "left", "right", "front", "rear", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this invention.

[0023] In the description of this application, it should be noted that, unless otherwise expressly specified and limited, the terms "installation," "connection," "linking," and "attachment" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal communication between two components. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.

[0024] It should be emphasized that when the term "comprising / including" is used in this specification, it is used to explicitly indicate the presence of the stated feature, integer, step, or component, but does not exclude the presence or addition of one or more other features, integers, steps, parts, or groups of features, integers, steps, or parts.

[0025] like Figures 1-3As shown in the figure, the present invention provides a testing fixture for a new energy battery cover plate, which is used to test a new energy battery cover plate 1. The two ends of the surface of the new energy battery cover plate 1 are respectively provided with a positive electrode post 11 and a negative electrode post 12. An insulating plate 14 is provided on the outer side of both the positive electrode post 11 and the negative electrode post 12. The insulating plate 14 includes an ear-shaped protrusion. An explosion-proof valve 13 is provided between the positive electrode post 11 and the negative electrode post 12.

[0026] The testing fixture 2 includes a base 21, which is made of aluminum alloy and integrally formed by CNC milling to ensure structural strength and dimensional stability. The surface is anodized to improve wear resistance. The surface of the base 21 is provided with a product positioning groove that matches the shape of the new energy battery cover plate 1. In the product positioning groove, a first testing groove 23 is provided corresponding to the theoretical installation position of the positive electrode post 11, and a second testing groove 24 is provided corresponding to the theoretical installation position of the negative electrode post 12. The shapes of the first testing groove 23 and the second testing groove 24 are respectively matched with the shape and contour of the outer insulating plate 14 (including ear-shaped protrusions) of the positive electrode post 11 and the negative electrode post 12.

[0027] In this embodiment, the new energy battery cover plate 1 is accurately positioned by the product positioning groove. By utilizing the contour matching between the first detection groove 23, the second detection groove 24 and the insulating plate 14 (including ear-shaped protrusions), it is possible to quickly determine whether the insulating plate 14 has dimensional deviations or deformations. If the cover plate can be fully embedded in the positioning groove and the insulating plate 14 can be smoothly inserted into the detection groove, it indicates that the insulating plate 14 is formed to be qualified. If there is interference or it cannot be fully embedded, it can be directly judged as unqualified, which greatly improves the detection efficiency (single detection time ≤ 5 seconds).

[0028] See Figures 1-3 The battery cover to be tested is provided with a circular explosion-proof valve 13. Correspondingly, a through hole is provided on the product positioning groove. The through hole corresponds to the shape and theoretical installation position of the explosion-proof valve 13.

[0029] In this embodiment, the through hole can effectively avoid the explosion-proof valve 13 on the battery cover, preventing mechanical interference between the explosion-proof valve 13 and the base 21 during testing. This avoids damage to the explosion-proof valve 13 or the cover not being able to be laid flat due to squeezing, ensuring that no other structures of the cover are damaged during the testing process.

[0030] Specifically, the upper edge of the through hole has a 45° chamfer. The chamfer can guide the cover plate when it is inserted, preventing the cover plate from rigidly colliding with the edge of the through hole. At the same time, it can eliminate sharp edges and corners, preventing scratches on the surface of the cover plate or the operator's hands during the inspection process, thus improving operational safety.

[0031] See Figures 1-3The depth of the product positioning groove is equal to the thickness of the new energy battery cover plate 1, so that after the new energy battery cover plate 1 is fully inserted, the top surface of the cover plate and the top surface of the base 21 are at the same level.

[0032] In this embodiment, the top surface of the cover plate is flush with the top surface of the base 21, which makes it easy for operators to directly observe whether the cover plate is fully in place, while avoiding accidental damage to the cover plate due to its protrusion from the base 21 during the testing process.

[0033] See Figures 1-3 The depth of the first detection groove 23 is not less than the height of the positive electrode post 11, and the depth of the second detection groove 24 is not less than the height of the negative electrode post 12.

[0034] In this embodiment, the depths of the first detection groove 23 and the second detection groove 24 are not less than the heights of the positive electrode post 11 and the negative electrode post 12, respectively. This can prevent the top of the electrode post from being squeezed against the bottom of the groove when the cover plate is placed in, thus preventing the electrode post from being deformed or damaged. At the same time, it ensures that the insulating plate 14 (including the ear-shaped protrusions) can be fully embedded in the groove to achieve accurate detection.

[0035] See Figure 1 and Figure 3 The base 21 has pick-up and put-down grooves 25 on both sides, which are connected to the product positioning groove, and the depth of the pick-up and put-down grooves 25 extends to the bottom of the product positioning groove.

[0036] In this embodiment, the placement groove 25 allows operators to easily insert their fingers to pick up and place the battery cover in the positioning groove, avoiding the difficulty of removal due to the cover being too tightly fitted to the positioning groove, thus improving the ease of operation.

[0037] See Figure 1 and Figure 3 The upper surface of the base 21 has a "+" mark laser-engraved on the side near the first detection groove 23 (positive electrode side) and a "-" mark laser-engraved on the side near the second detection groove 24 (negative electrode side).

[0038] In this embodiment, clear positive and negative markings prevent operators from placing the battery cover in the positioning slot backwards, avoiding detection errors or structural interference caused by reverse placement and improving detection accuracy.

[0039] See Figure 1 and Figure 3 The mating clearance between the inner wall of the first detection groove 23 and the second detection groove 24 and the corresponding insulating plate 14 (including ear-shaped protrusions) is controlled to be 0.08mm.

[0040] In this embodiment, the gap ensures that the qualified insulation board 14 can be smoothly inserted into the groove without jamming, and can also accurately identify dimensional deviations or ear-shaped protrusions of the insulation board 14. If the gap is too small, the qualified part may not be able to be inserted, and if it is too large, minor deviations cannot be detected, thus balancing detection accuracy and operational efficiency.

[0041] See Figure 3 The inner walls of the first detection groove 23 and the second detection groove 24 are both precision polished, with a surface roughness Ra≤0.8μm.

[0042] In this embodiment, the smooth inner wall can reduce frictional damage between the insulating plate 14 and the first detection groove 23 and the second detection groove 24, and avoid scratching the surface of the insulating plate 14 during the detection process; at the same time, it reduces the resistance when the new energy battery cover 1 is put in and taken out, and improves the smoothness of operation.

[0043] In addition, four anti-slip rubber pads are attached to the bottom of the base 21, located at the four corners of the bottom of the base 21.

[0044] In this embodiment, the anti-slip rubber pad can increase the friction between the base 21 and the worktable surface, preventing the base 21 from sliding during the testing process. Especially when picking up and placing the cover plate, it can improve the stability of the tooling and ensure the consistency of the testing position.

[0045] During use, the operator places the new energy battery cover 1 to be tested into the product positioning slot according to the positive and negative markings on the base 21. If the cover can be fully positioned (top surface flush with the base 21) and the insulating plate 14 (including the ear-shaped protrusions) is smoothly embedded in the first detection groove 23 and the second detection groove 24, it is considered qualified. If the new energy battery cover 1 cannot be fully positioned or the insulating plate 14 interferes with the first detection groove 23 and the second detection groove 24, it is considered unqualified. The entire process requires no complicated tools and is simple and efficient to operate.

[0046] The embodiments of this utility model have been described in detail above, but the content described is only a preferred embodiment of this utility model and should not be considered as limiting the scope of implementation of this utility model. All equivalent changes and improvements made in accordance with the claims of this utility model should still fall within the patent coverage of this utility model.

Claims

1. A testing fixture for a new energy battery cover plate, used for a new energy battery cover plate (1), wherein a positive electrode post (11) and a negative electrode post (12) are respectively provided at both ends of the surface of the new energy battery cover plate (1), and an insulating plate (14) is provided on the outer side of both the positive electrode post (11) and the negative electrode post (12), wherein the insulating plate (14) includes ear-shaped protrusions; characterized in that, include: The base (21) has a product positioning groove on its surface that matches the shape of the new energy battery cover (1); The product positioning groove has a first detection groove (23) corresponding to the theoretical installation position of the positive electrode post (11) and a second detection groove (24) corresponding to the theoretical installation position of the negative electrode post (12). The shapes of the first detection groove (23) and the second detection groove (24) are respectively matched with the shape and outline of the outer insulating plate (14) of the positive electrode post (11) and the negative electrode post (12).

2. The testing fixture for new energy battery cover plates as described in claim 1, characterized in that, An explosion-proof valve (13) is provided between the positive electrode post (11) and the negative electrode post (12). A through hole is provided on the product positioning groove, and the shape and position of the through hole correspond to those of the explosion-proof valve (13).

3. The testing fixture for new energy battery cover plates as described in claim 2, characterized in that, The edges of the through hole are chamfered.

4. The testing fixture for new energy battery cover plates as described in claim 1, characterized in that, The depth of the product positioning groove is equal to the thickness of the new energy battery cover (1), so that the top surface of the new energy battery cover (1) is flush with the top surface of the base (21) after it is fully inserted.

5. The testing fixture for new energy battery cover plates as described in claim 1, characterized in that, The depths of the first detection groove (23) and the second detection groove (24) are not less than the heights of the positive electrode post (11) and the negative electrode post (12), respectively.

6. The testing fixture for new energy battery cover plates as described in claim 1, characterized in that, The base (21) has pick-up and put-down grooves (25) on both sides, which are connected to the product positioning groove, and the depth of the pick-up and put-down grooves (25) extends to the bottom of the product positioning groove.

7. The testing fixture for new energy battery cover plates as described in claim 1, characterized in that, The base (21) has a "+" mark on the side surface near the first detection groove (23) and a "-" mark on the side surface near the second detection groove (24).

8. The testing fixture for new energy battery cover plates as described in claim 1, characterized in that, The gap between the inner wall of the first detection groove (23) and the second detection groove (24) and the corresponding insulating plate (14) is 0.05-0.1mm.

9. The testing fixture for new energy battery cover plates as described in claim 1, characterized in that, The inner walls of the first detection groove (23) and the second detection groove (24) are both polished.

10. The testing fixture for new energy battery cover plates as described in claim 1, characterized in that, The base (21) has an anti-slip rubber pad at the bottom.

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