An inspection tool
By designing an L-shaped groove detection reference surface and a contour-following structure on the support platform, the problem of low efficiency and poor accuracy in detecting the symmetry of the stamping steps of the new energy battery cover plate substrate was solved, achieving rapid and accurate detection and improving production efficiency and product quality.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- 马鞍山盛世科技有限公司
- Filing Date
- 2025-09-11
- Publication Date
- 2026-06-26
AI Technical Summary
Existing technologies are insufficient for quickly and accurately detecting the symmetry of the stamping steps on the substrate of new energy battery cover plates, resulting in low detection efficiency and poor accuracy, which affects production efficiency and product quality.
A testing fixture was designed, which uses two L-shaped grooves on the support platform to form a testing reference surface. By ensuring that the bottom surfaces of the L-shaped grooves are at the same horizontal level, the symmetry of the battery cover can be tested. Combined with the contouring structure and the adjustable support platform structure, it can adapt to the testing needs of different sizes.
It enables rapid and accurate detection of the symmetry of the stamping steps on the battery cover substrate, reduces operational difficulty, improves detection efficiency and accuracy, ensures product quality, and adapts to the detection needs of different sizes.
Smart Images
Figure CN224415991U_ABST
Abstract
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 tool. Background Technology
[0002] In the manufacturing process of new energy batteries such as lithium-ion batteries, the battery cover plate substrate is a key structural component, and its stamping quality directly affects the overall assembly accuracy and performance of the battery. Among them, the symmetry of the stamping steps of the substrate is a core quality control indicator. If this indicator is not up to standard, it will lead to misalignment when assembling the substrate and the aluminum shell, which may even cause assembly failure, resulting in a large amount of rework or scrap, significantly increasing production costs, and restricting the improvement of production efficiency.
[0003] Currently, the industry still largely relies on manual operation for inspecting the symmetry of stamped steps on battery cover substrates, using tools such as calipers and plug gauges for manual measurement and judgment. This inspection method is not only inefficient and difficult to adapt to the inspection needs of large-scale production, but also suffers from poor accuracy and stability due to factors such as human operating experience and visual errors. It is prone to problems such as missed detections and misjudgments, and cannot provide reliable assurance for product quality. Although some inspection devices exist in existing related technologies, such as the "cover flatness laser scanning stage" with patent number CN113932734A, its core function is only to detect the flatness of the cover, which is aimed at the detection of two-dimensional planar morphology. It is difficult to take into account the three-dimensional structural features of the step area, let alone achieve effective detection of step symmetry.
[0004] Therefore, existing technologies are insufficient to meet the actual needs of rapid and accurate detection of the symmetry of the stamping steps on the battery cover substrate. There is an urgent need for a tooling specifically designed for this detection requirement to solve the problems of low efficiency and poor accuracy of manual inspection, thereby reducing production costs and ensuring product assembly quality. Utility Model Content
[0005] This invention provides a testing fixture that can solve the problem mentioned in the background art that conventional testing fixtures are difficult to quickly and accurately detect the symmetry of the stamping steps of the battery cover plate substrate.
[0006] A testing fixture is used to test the symmetry of a new energy battery cover plate. The new energy battery cover plate includes a cover plate body and cover plate bosses protruding from opposite sides of the top of the cover plate body. The fixture includes a support platform. The support platform is provided with a first testing plate and a second testing plate for positioning the battery cover plate. L-shaped grooves are formed on the edges of the first testing plate and the second testing plate that are close to each other. The L-shaped grooves are used to support the cover plate bosses on the corresponding sides.
[0007] The bottom surfaces of the two L-shaped grooves are at the same horizontal height, forming a detection reference surface for detecting the battery cover.
[0008] Preferably, the vertical and horizontal walls of the L-shaped groove together form a contour structure for accommodating and positioning the cover plate boss.
[0009] Preferably, the first detection plate is located at one end of the support platform, and the second detection plate is located at the other end of the support platform.
[0010] Preferably, the support platform includes a first support plate and a second support plate. An adjusting slide rod is provided on the side of the first support plate near the second support plate. An adjusting slide groove adapted to the adjusting slide rod is provided inside the second support plate. A threaded hole is provided on one side of the adjusting slide groove, and a fixing screw is threadedly connected inside the threaded hole.
[0011] Preferably, the first support plate is provided with a limiting slide rod located on the side of the adjusting slide rod, and the second support plate is provided with a limiting slide groove that is adapted to the limiting slide rod.
[0012] Preferably, the adjusting slide bar has a scale on its side.
[0013] Preferably, the adjusting slide bar is a square bar.
[0014] Preferably, a transmission screw is connected to the second detection plate, one end of the transmission screw is connected to the first detection plate through a bearing seat, and the other end of the transmission screw is connected to a fixed plate through a bearing seat. A rotating disk connected to the transmission screw is provided on the outside of the fixed plate.
[0015] Preferably, a positioning rod is provided on one side of the transmission screw, one end of the positioning rod is connected to the first detection plate, and the other end of the positioning rod is connected to the fixing plate.
[0016] Preferably, a scale plate is provided on the side of the support platform.
[0017] The beneficial effects of this utility model are:
[0018] This detection tooling forms a standardized reference benchmark by having two L-shaped grooves with their groove bottoms at the same horizontal height above the support platform. Specifically, when detecting the symmetry of a new energy battery cover plate, first place the cover plate boss on one side of the cover plate body at the L-shaped groove on the first detection plate. If the cover plate boss on the other side of the cover plate body can smoothly fall into the groove bottom of the L-shaped groove on the second detection plate, it is determined that the symmetry of the new energy battery cover plate is qualified. If the cover plate boss on the other side is blocked by the groove opening of the L-shaped groove on the second detection plate and cannot fall to the groove bottom, it is determined that the symmetry is unqualified. During fitting, the reference plane can visually show whether the cover plate bosses on both sides of the cover plate body are on the same height plane, thus quickly and accurately judging whether the symmetry is qualified, perfectly fitting the detection characteristics of the stepped three-dimensional structure. Among them, the position between the parts of the two detection plates without the L-shaped grooves is used to accommodate and position the cover plate body, which will not interfere with the two L-shaped grooves on both sides supporting the corresponding cover plate bosses, ensuring the feasibility of detecting the symmetry of the new energy battery cover plate. Brief Description of the Drawings
[0019] Figure 1 is a schematic structural diagram of the detection tooling provided by the present utility model;
[0020] Figure 2 is a detection schematic diagram of the detection tooling provided by the present utility model;
[0021] Figure 3 is Figure 1 a schematic structural diagram of the L-shaped groove in
[0022] Figure 4 is Figure 1 a schematic structural diagram of the support platform in
[0023] Figure 5 is Figure 1 a side view of the support platform in
[0024] Figure 6 is Figure 1 a schematic structural diagram of another embodiment of the support platform in
[0025] Figure 7 is Figure 1 a side view of another embodiment of the support platform in
[0026] Explanation of Reference Numerals:
[0027] 1. Support platform; 2. First detection plate; 3. Second detection plate; 4. L-shaped groove; 5. Battery cover plate; 6. Transmission screw; 7. Fixing plate; 8. Rotating disk; 9. Positioning rod; 10. Scale plate; 101. First support plate; 102. Second support plate; 103. Adjusting slide rod; 104. Adjusting slide groove; 105. Threaded hole; 106. Fixing screw; 107. Limiting slide rod; 108. Limiting slide groove; 109. Scale; 41. Vertical groove wall; 42. Horizontal groove wall; 51. Cover plate body; 52. Cover plate boss. Detailed Implementation
[0028] The specific embodiments of this utility model are described in detail below, but it should be understood that the protection scope of this utility model is not limited to the specific embodiments.
[0029] Example 1:
[0030] like Figure 1-5 As shown, this utility model proposes a testing fixture for testing the symmetry of a new energy battery cover plate 5. The new energy battery cover plate includes a cover plate body 51 and cover plate bosses 52 protruding from opposite sides of the top of the cover plate body 51. It includes a support platform 1, on which a first testing plate 2 and a second testing plate 3 for positioning the battery cover plate 5 are provided. L-shaped grooves 4 are formed on the edges of the first testing plate 2 and the second testing plate 3 that are close to each other. The L-shaped grooves 4 are used to support the cover plate bosses 52 on the corresponding sides. The bottom surfaces of the two L-shaped grooves 4 are at the same horizontal height, forming a testing reference surface for testing the battery cover plate 5.
[0031] In the technical solution of this utility model, two L-shaped grooves 4 with their bottom surfaces at the same horizontal height are set above the support platform 1, forming a standardized reference benchmark. This ensures that the battery cover 5 is always positioned and judged based on the same plane during the inspection process, avoiding inspection errors caused by deviations in the height of the reference surface. The cover plate protrusion 52 on one side of the battery cover 5 is placed in the L-shaped groove 4 on the first inspection plate 2. If the cover plate protrusion 52 on the other side of the battery cover 5 can fall smoothly into the bottom of the L-shaped groove 4 on the second inspection plate 3, the symmetry of the new energy battery cover 5 is deemed to be qualified. If the other end is blocked by the opening of the L-shaped groove 4 on the second inspection plate 3 and cannot fall to the bottom, the symmetry of the new energy battery cover 5 is deemed to be unqualified. When used together, the reference surface can intuitively show whether the two steps are on the same height plane, thereby accurately judging whether the symmetry is qualified. This perfectly matches the inspection characteristics of the three-dimensional structure of the steps and makes up for the shortcomings of traditional planar inspection devices that cannot take into account three-dimensional features.
[0032] Specifically, the first detection plate 2 is located at one end of the support platform 1, and the second detection plate 3 is located at the other end of the support platform 1. Based on the same reference plane, the operator only needs to observe whether the other end of the battery cover plate 5 can fall smoothly into the L-shaped groove 4 and fit against the bottom surface of the groove to quickly determine whether the symmetry is qualified. This judgment method based on the reference plane does not require complicated parameter conversion, further reducing the difficulty of operation and making the detection process more efficient and intuitive.
[0033] The space between the two detection plates without L-shaped grooves is used to accommodate the positioning cover plate body, which will not hinder the two L-shaped grooves on both sides from supporting the cover plate protrusions on the corresponding sides, thus ensuring the feasibility of detecting the symmetry of the new energy battery cover plate.
[0034] like Figure 3 and Figure 4 As shown, the vertical groove wall 41 and the horizontal groove wall 42 of the L-shaped groove 4 together form a contouring structure for accommodating the cover plate boss 52; by matching the shape and height of the contouring structure with the step of the battery cover plate 5, the vertical groove wall 41 can fit the vertical side of the step, and the horizontal groove wall 42 can fit the horizontal bottom surface of the step. Through bidirectional limiting, a stable constraint is formed on the step, which avoids displacement or shaking of the step during the inspection process and ensures the stability of the workpiece posture during the inspection.
[0035] Specifically, if there is a vertical deviation, the battery cover 5 will get stuck with the vertical groove wall 41; if there is a horizontal deviation, it will not fit well with the horizontal groove wall 42. This direct physical interference allows operators to quickly identify defective products and avoids the omission of minor deviations in manual measurement.
[0036] like Figure 4 and Figure 5 As shown, the support platform 1 includes a first support plate 101 and a second support plate 102. An adjusting slide rod 103 is provided on the side of the first support plate 101 near the second support plate 102. An adjusting groove 104 adapted to the adjusting slide rod 103 is provided inside the second support plate 102. A threaded hole 105 is provided on one side of the adjusting groove 104, and a fixing screw 106 is threadedly connected inside the threaded hole 105. Through the matching structure of the adjusting slide rod 103 and the adjusting groove 104, the first support plate 101 and the second support plate 102 can slide relative to each other, thereby changing the overall length of the support platform 1. This can adapt to the testing needs of battery cover substrates of different sizes and specifications, improving the versatility and applicability of the tooling. When the length of the support platform is adjusted to a suitable position, the adjusting slide rod 103 and the adjusting groove 104 can be firmly fixed by the fixing screw 106 in the threaded hole 105, preventing the length of the support platform from changing due to vibration or external force during the testing process.
[0037] Specifically, the first support plate 101 is provided with a limiting slide rod 107 located on the side of the adjusting slide rod 103, and the second support plate 102 is provided with a limiting slide groove 108 that is adapted to the limiting slide rod 107. When the first support plate 101 and the second support plate 102 slide relative to each other through the adjusting slide rod 103 and the adjusting slide groove 104, the cooperation of the limiting slide rod 107 and the limiting slide groove 108 can constrain the relative posture of the two, avoid the support plate from twisting or shifting due to unilateral force or poor sliding, and ensure that the first detection plate 2 and the second detection plate 3 always maintain a parallel or preset relative position relationship during the adjustment process, thus ensuring the stability of the detection benchmark.
[0038] The adjusting slide 103 has a scale 109 on its side and is a square rod. The scale 109 allows the operator to intuitively read the extension and retraction length of the adjusting slide 103, enabling precise control of the length of the support platform 1. When adjusting the distance between the first detection plate 2 and the second detection plate 3, no additional measuring tools are needed; the required size can be quickly located by using the scale, greatly improving adjustment efficiency.
[0039] Example 2:
[0040] like Figure 6 and Figure 7 As shown, a transmission screw 6 is connected to the second detection plate 3. One end of the transmission screw 6 is connected to the first detection plate 2 through a bearing seat, and the other end of the transmission screw 6 is connected to the fixed plate 7 through a bearing seat. A rotating disk 8 connected to the transmission screw 6 is provided on the outside of the fixed plate 7.
[0041] In the technical solution of this embodiment, rotating the rotating disk 8 can drive the transmission screw 6 to rotate, which can convert the rotational motion into the linear motion of the second detection plate 3, thereby adjusting the distance between the second detection plate 3 and the first detection plate 2. Compared with simple sliding of the slider, this adjustment method can more accurately control the distance change, which can meet the high-precision distance requirements when inspecting battery cover substrates of different sizes, further improving the inspection adaptability of the tooling. The operator only needs to rotate the rotating disk 8 to drive the second detection plate 3 to move, which greatly reduces the operation intensity.
[0042] Specifically, a positioning rod 9 is provided on one side of the transmission screw 6. One end of the positioning rod 9 is connected to the first detection plate 2, and the other end of the positioning rod 9 is connected to the fixed plate 7. The positioning rod 9 passes through the second detection plate 3. The positioning rod 9 forms a rigid constraint by passing through the second detection plate 3, which can accurately guide the second detection plate 3 to move in a straight line, avoid its posture deviation during the adjustment process, and ensure that the L-shaped groove 4 always remains flush with the groove opening of the first detection plate 2, thus ensuring the consistency of the detection benchmark from a structural perspective.
[0043] The support platform 1 has a scale plate 10 on its side. The scale plate 10 can clearly show the distance between the first detection plate 2 and the second detection plate 3. When the operator adjusts the distance between the two detection plates by using the transmission screw 6 and the rotating disk 8, he / she can directly read the current distance by observing the scale plate 10. This eliminates the need for additional measuring tools, realizes the visual operation of the distance adjustment, and greatly improves the accuracy of the adjustment.
[0044] Working principle: Two L-shaped grooves 4 with their bottom surfaces at the same horizontal level are set above the support platform 1, forming a standardized reference benchmark. This ensures that the battery cover 5 is always positioned and judged based on the same plane during the inspection process. During inspection, the cover plate protrusion 52 on one side of the battery cover 5 is first embedded into the L-shaped positioning groove of the fixed station to establish a benchmark. Then, the other side is released naturally to fall freely. If the product symmetry is qualified, the cover plate protrusion 52 on the other side can fall smoothly into the bottom of the L-shaped groove of the inspection station, indicating that the overall size is within tolerance. If the size is too large due to the asymmetry of the steps, that end will be blocked by the groove opening and suspended in the air, unable to fall to the bottom, thus quickly and intuitively determining that the product is unqualified.
[0045] The above-disclosed embodiments are only a few specific examples of the present utility model. However, the embodiments of the present utility model are not limited thereto. Any changes that can be conceived by those skilled in the art should fall within the protection scope of the present utility model.
Claims
1. A detection tool for detecting symmetry of a new energy battery cover plate (5), the new energy battery cover plate comprising a cover plate body (51) and a cover plate boss (52) protruding on opposite side edges of the top of the cover plate body (51), characterized in that, include: A support platform (1) is provided with a first detection plate (2) and a second detection plate (3) for positioning the battery cover (5). The first detection plate (2) and the second detection plate (3) are provided with L-shaped grooves (4) on their edges that are close to each other. The L-shaped grooves (4) are used to support the cover plate protrusions (52) on the corresponding side. The bottom surfaces of the two L-shaped grooves (4) are at the same horizontal height, forming a detection reference surface for detecting the battery cover (5).
2. The inspection tool of claim 1, wherein The vertical groove wall (41) and the horizontal groove wall (42) of the L-shaped groove (4) together form a contour structure for accommodating and positioning the cover plate boss (52).
3. The inspection tool of claim 1, wherein The first detection plate (2) is located at one end of the support platform (1), and the second detection plate (3) is located at the other end of the support platform (1).
4. The inspection tool of claim 3, wherein the first and second light sources are disposed on opposite sides of the inspection tool. The support platform (1) includes a first support plate (101) and a second support plate (102). An adjusting slide rod (103) is provided on the side of the first support plate (101) near the second support plate (102). An adjusting slide groove (104) adapted to the adjusting slide rod (103) is provided inside the second support plate (102). A threaded hole (105) is provided on one side of the adjusting slide groove (104). A fixing screw (106) is threaded inside the threaded hole (105).
5. The inspection tool of claim 4, wherein the first and second light sources are disposed on opposite sides of the inspection tool. The first support plate (101) is provided with a limiting slide rod (107) located on the side of the adjusting slide rod (103), and the second support plate (102) is provided with a limiting slide groove (108) that is adapted to the limiting slide rod (107).
6. The testing fixture as described in claim 4, characterized in that, The adjusting slide (103) has a scale (109) on its side.
7. The testing fixture as described in claim 4, characterized in that, The adjusting slide bar (103) is a square bar.
8. The testing fixture as described in claim 1, characterized in that, The second detection plate (3) is connected to a transmission screw (6). One end of the transmission screw (6) is connected to the first detection plate (2) through a bearing seat, and the other end of the transmission screw (6) is connected to the fixed plate (7) through a bearing seat. A rotating disk (8) connected to the transmission screw (6) is provided on the outside of the fixed plate (7).
9. The testing fixture as described in claim 8, characterized in that, A positioning rod (9) is provided on one side of the transmission screw (6). One end of the positioning rod (9) is connected to the first detection plate (2), and the other end of the positioning rod (9) is connected to the fixing plate (7).
10. The testing fixture as described in claim 8, characterized in that, The support platform (1) is provided with a scale plate (10) on its side.