Bare cell tab inner and outer side surface detection platform
By employing a combination of a cell positioning platform, a reflector module, and a camera module on the lithium battery bare cell tab inspection platform, the problem of traditional inspection platforms being unable to comprehensively inspect inner tab defects has been solved. This enables comprehensive inspection of both inner and outer sides, ensuring cell production quality and reducing costs.
Patent Information
- Application Number
- CN202423274337.X
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-12-27
- Publication Date
- 2026-01-06
- Estimated Expiration
- 2034-12-27
AI Technical Summary
Traditional lithium battery bare cell tab testing platforms cannot fully detect inner tab defects, resulting in the failure to detect inner layer defects.
By combining a cell positioning platform, a reflector module, and a shooting module, and using a horizontally centered reflector and a stacked reflector structure, combined with a pneumatic lifting mechanism, it is possible to achieve comprehensive shooting of the inner and outer sides of the electrode tab.
It enables comprehensive inspection of the inner and outer surfaces of the bare cell tabs, ensuring cell production quality and reducing the manufacturing cost of the inspection platform.
Smart Images
Figure CN223770083U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of lithium battery cell production technology, and in particular to a testing platform for the inner and outer sides of the bare cell tabs. Background Technology
[0002] During the production and processing of lithium batteries, when defects such as folding, breakage, or excess material appear on the tabs of bare lithium battery cells, it is necessary to use an inspection platform to capture images of the tabs and detect these defects. Traditional inspection platforms typically use a top-down vertical shooting method to obtain images of tab defects. This traditional method has the following drawbacks: Since the tabs of the positive and negative electrodes of the bare battery cell are formed by multiple layers of tabs stacked after a winding or stacking process, the traditional top-down vertical shooting method can only inspect the topmost tab. It cannot comprehensively inspect every layer of tabs from both the inner and outer sides. This leads to the serious consequence of failing to detect defects in the inner layers of tabs. Utility Model Content
[0003] To address the shortcomings of existing technologies, this invention provides a testing platform for the inner and outer sides of bare battery cell tabs, thereby overcoming the deficiencies in existing technologies.
[0004] To achieve the above objectives, this utility model provides the following technical solution:
[0005] A bare battery cell tab inner and outer side inspection platform, comprising a battery cell positioning platform, a reflector module and a shooting module arranged side by side.
[0006] The battery cell positioning platform includes a battery cell placement platform, on which the battery cell to be tested is placed flat.
[0007] The reflector module includes a first reflector, a second reflector, a third reflector, a fourth reflector, and a reflector lifting mechanism;
[0008] The second reflector is located in the middle of the long side of the battery cell and between the first and second tabs of the battery cell; the first and third reflectors are located opposite each other on both sides of the second reflector, and the first and third reflectors are horizontally aligned with the battery cell; the fourth reflector is fixed above the second reflector by a connecting seat, and the second and fourth reflectors are raised and lowered by a reflector lifting mechanism;
[0009] The shooting module includes a first camera lens, a second camera lens, and a third camera lens; the first camera lens faces the first reflector, the second camera lens faces the second and fourth reflectors, and the third camera lens faces the third reflector.
[0010] Furthermore, the reflector lifting mechanism includes a primary cylinder and a secondary cylinder; the output end of the primary cylinder is provided with an L-shaped connecting plate, the secondary cylinder is mounted on the L-shaped connecting plate, the output end of the secondary cylinder is provided with an L-shaped base, and the second reflector is mounted on the L-shaped base.
[0011] Furthermore, the battery cell positioning platform also includes a positioning cylinder and a positioning clamping block; the positioning cylinder is disposed on both sides of the battery cell placement platform, and the positioning clamping block is rotatably mounted on the output end of the positioning cylinder.
[0012] Furthermore, the first reflector and the third reflector are fixedly mounted on the support plate of the battery cell placement platform via connectors.
[0013] Furthermore, the front ends of the first camera lens, the second camera lens, and the third camera lens are each provided with a ring light source.
[0014] Preferably, the mirror surface of the first reflector faces outward from the first tab and forms a 45-degree angle with the first camera lens.
[0015] Preferably, the mirror surface of the second reflector faces the inside of the first electrode tab and forms a 45-degree angle with the second camera lens.
[0016] Preferably, the mirror surface of the third reflector faces outward from the second tab and forms a 45-degree angle with the third camera lens.
[0017] Preferably, the mirror surface of the fourth reflector faces the inside of the second tab and forms a 45-degree angle with the second camera lens.
[0018] Compared with the prior art, the beneficial effects of this utility model are as follows:
[0019] 1) The bare cell tab inner and outer side inspection platform of this case uses a first and third reflector aligned horizontally with the cell to photograph the outer side of the two tabs of the cell; and uses a second and fourth reflector stacked on top of each other to photograph the inner side of the two tabs. This allows for comprehensive photographing and inspection of the inner and outer sides of the two tabs of the cell on a single platform, enabling comprehensive detection of defects in each layer of tabs from both inner and outer sides, effectively ensuring the quality of cell production and processing.
[0020] 2) The bare cell electrode tab inner and outer side inspection platform of this case has a second and fourth reflector set in two stacked layers, and is driven to rise and fall by a reflector lifting mechanism. This allows the second and fourth reflectors to maintain a large mirror size without interfering with each other, so that all the details of the inner side of the two electrodes can be captured, ensuring the comprehensiveness of electrode defect inspection.
[0021] 3) In this case, a bare cell electrode tab inner and outer side inspection platform has a reflector lifting mechanism that uses a two-stage pneumatic method to drive the second and fourth reflectors to rise and fall. The pneumatic cylinder has low cost and relatively low precision requirements, and it is easier to control the cylinder stroke, thereby effectively reducing the manufacturing cost of the inspection platform.
[0022] To provide a clearer understanding of this invention, the preferred embodiments of this invention will be described below in conjunction with the accompanying drawings. Attached Figure Description
[0023] Figure 1 , Figure 2 This is a schematic diagram of the structure of this utility model;
[0024] Figure 3 , Figure 4 This is a schematic diagram showing the installation position of the battery cell positioning platform and the reflector module in the utility model.
[0025] Attached image labels:
[0026] 11-Cell placement platform, 12-Positioning cylinder, 13-Clamping block, 111-Support plate; 21-First reflector, 22-Second reflector, 23-Third reflector, 24-Fourth reflector, 25-Connecting seat; 31-First stage cylinder, 32-Second stage cylinder, 33-L-shaped connecting plate, 34-L-shaped base; 41-First camera lens, 42-Second camera lens, 43-Third camera lens, 44-Ring light source; 9-Cell, 91-First tab, 92-Second tab. Detailed Implementation
[0027] In the description of this utility model, it should be understood that the terms "center," "longitudinal," "lateral," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the accompanying drawings and are only for the convenience of describing this utility model 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, and therefore should not be construed as a limitation of this utility model. In the description of this utility model, unless otherwise stated, "a plurality of" means two or more.
[0028] Furthermore, if terms such as "first" or "second" are used for descriptive purposes only, they are mainly used to distinguish different devices, components or parts (the specific types and structures may be the same or different), and are not used to indicate or imply the relative importance or quantity of the indicated devices, components or parts, and should not be construed as indicating or implying relative importance.
[0029] Furthermore, it should be noted that, unless otherwise explicitly specified and limited, the terms "installed," "equipped with," "sleeved / connected," "connected," etc., should be interpreted broadly. For example, "connection" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium; it can be a connection within two components. For those skilled in the art, the specific meaning of the above terms in this utility model can be understood according to the specific circumstances.
[0030] Please also refer to Figure 1-4 This utility model provides a bare battery cell tab inner and outer side inspection platform, including a battery cell positioning platform, a reflector module and a shooting module arranged side by side.
[0031] The battery cell positioning platform includes a battery cell placement platform (11), a positioning cylinder (12), and a positioning clamping block (13). The battery cell (9) to be tested is placed flat on the battery cell placement platform (11). The positioning cylinder (12) is set on both sides of the battery cell placement platform (11). The positioning clamping block (13) is rotatably installed on the output end of the positioning cylinder (12). The positioning clamping block (13) can rotate 45 degrees inward and is driven to rise and fall by the positioning cylinder (12) to clamp the battery cell (9).
[0032] The reflector module includes a first reflector (21), a second reflector (22), a third reflector (23), a fourth reflector (24), and a reflector lifting mechanism.
[0033] The second reflector (22) is located in the middle of the long side of the cell (9) and between the first tab (91) and the second tab (92) of the cell (9); the first reflector (21) and the third reflector (23) are located opposite each other on both sides of the second reflector (22), and the first reflector (21) and the third reflector (23) are horizontally aligned with the cell (9), and the first reflector (21) and the third reflector (23) are fixedly installed on the support plate (111) of the cell placement platform (11) by the connector; the fourth reflector (24) is fixed above the second reflector (22) by the connecting seat (25), and the second reflector (22) and the fourth reflector (24) are lifted and lowered by the reflector lifting mechanism.
[0034] The reflector lifting mechanism includes a primary cylinder (31) and a secondary cylinder (32). The output end of the primary cylinder (31) is provided with an L-shaped connecting plate (33), the secondary cylinder (32) is mounted on the L-shaped connecting plate (33), the output end of the secondary cylinder (32) is provided with an L-shaped base (34), and the second reflector (22) is mounted on the L-shaped base (34). This allows the primary cylinder (31) to drive the secondary cylinder (32), the secondary cylinder (32) to drive the second reflector (22) on the L-shaped base (34), and the second reflector (22) to drive the fourth reflector (24). This allows the second reflector (22) and the fourth reflector (24) to be raised and lowered to positions that are level with the battery cell and suitable for photographing the inner side of the battery cell tab.
[0035] In this embodiment, since the distance between the two tabs of the battery cell (9) is small, if the second reflector (22) and the fourth reflector (24) are arranged side by side, a small-sized second reflector (22) and fourth reflector (24) are required. However, if the size of the second reflector (22) and the fourth reflector (24) is made small, it will be impossible to capture all the details inside the tabs, directly affecting the comprehensiveness of the detection. At the same time, in this embodiment, a two-stage pneumatic cylinder is used to drive the second reflector (22) or the fourth reflector (24). The main advantage is that the two-stage pneumatic cylinder has low cost, relatively low precision requirements, and is easier to control the cylinder stroke. If a high-precision controllable multi-stroke single cylinder is used, although the precision is higher, the cost is also higher, and it is not easy to control the single cylinder to output multiple strokes.
[0036] The shooting module includes a first camera lens (41), a second camera lens (42) and a third camera lens (43); the front ends of the first camera lens (41), the second camera lens (42) and the third camera lens (43) are respectively provided with ring light sources (44), and the first camera lens (41) faces the first reflector (21), the second camera lens (42) faces the second reflector (22) and the fourth reflector (24), and the third camera lens (43) faces the third reflector (23).
[0037] Furthermore,
[0038] The mirror surface of the first reflector (21) faces the outside of the first tab (91) and forms a 45-degree angle with the first camera lens (41).
[0039] The mirror surface of the third reflector (23) faces the outside of the second electrode (92) and forms a 45-degree angle with the third camera lens (43).
[0040] The mirror surface of the second reflector (22) faces the inside of the first tab (91) and forms a 45-degree angle with the second camera lens (42).
[0041] The mirror surface of the fourth reflector (24) faces the inside of the second electrode (92) and forms a 45-degree angle with the second camera lens (42).
[0042] Workflow:
[0043] 1. The robotic arm places the battery cell (9) on the battery cell placement platform (11), the positioning cylinder (12) is activated, the two clamping plates rotate inward 45 degrees and then press down on the battery cell (9) to clamp and position the battery cell (9);
[0044] 2. When the first-stage cylinder (31) is working, the piston rod at the output end of the first-stage cylinder (31) extends, and the second reflector (22) and the fourth reflector (24) are raised. When the fourth reflector (24) is on the same horizontal plane as the battery cell (9) to be tested, the first-stage cylinder (31) stops working. The fourth reflector (24) stops at a position between the first tab (91) and the second tab (92). The second camera lens (42) begins to take pictures of the mirror surface of the fourth reflector (24), thereby realizing the taking pictures of the inside of the second tab (92).
[0045] 3. The secondary cylinder (32) operates, the piston rod of the secondary cylinder (32) extends, and the second reflector (22) and the fourth reflector (24) continue to rise. When the second reflector (22) is at the same level as the battery cell (9) to be tested, the secondary cylinder (32) stops working, and the stopping position of the second reflector (22) is between the first electrode (91) and the second electrode (92). The first camera lens (41), the second camera lens (42), and the third camera lens (44) are all in motion. 43) Start working and take pictures of the mirror surfaces of the first reflector (21), the second reflector (22) and the third reflector (23) as well as the outer surfaces of the first tab (91) and the second tab (92), to achieve the taking pictures of the inner surface of the first tab (91) and the outer surfaces of the first tab (91) and the second tab (92); at this point, the entire taking picture work of the inner and outer surfaces of the two tabs of the battery cell (9) is completed, and the taken pictures are transmitted to the external detection equipment for defect analysis;
[0046] 4. The first-stage cylinder (31) and the second-stage cylinder (32) work to retract their respective piston rods, and the second reflector (22) and the fourth reflector (24) descend and reset.
[0047] 5. When the positioning cylinder (12) is working, the pressing plate rises up and then rotates outward 45 degrees to reset, so that the robot can take out the battery cell (9) from the testing platform.
[0048] Compared with existing technologies, the bare cell (9) tab inner and outer side inspection platform of this case uses a first and third reflector aligned horizontally with the cell to photograph the outer side of the two tabs of the cell; and uses a second and fourth reflector stacked on top of each other to photograph the inner side of the two tabs in turn. This allows for comprehensive photographing and inspection of the inner and outer sides of the two tabs of the cell on one platform, and enables comprehensive detection of defects in each tab layer from both inner and outer sides, effectively ensuring the quality of cell production and processing.
[0049] The embodiments described above are merely examples of several implementations of this utility model, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the utility model patent. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this utility model, and these modifications and improvements all fall within the protection scope of this utility model.
Claims
1. A naked cell tab inner and outer side detection platform, characterized in that the cell positioning platform, the mirror module and the shooting module are arranged in sequence and side by side. The cell positioning platform includes a cell placement table (11), and the cell to be detected (9) is placed flat on the cell placement table (11). The mirror module includes a first mirror (21), a second mirror (22), a third mirror (23), a fourth mirror (24) and a mirror lifting mechanism. The second mirror (22) is located at the middle position of the long side of the cell (9) and between the first tab (91) and the second tab (92) of the cell (9); the first mirror (21) and the third mirror (23) are oppositely located on both sides of the second mirror (22), and the first mirror (21) and the third mirror (23) are horizontally centered with the cell (9); the fourth mirror (24) is fixed above the second mirror (22) through a connecting seat (25), and the second mirror (22) and the fourth mirror (24) are driven to rise and fall by the mirror lifting mechanism. The shooting module includes a first camera lens (41), a second camera lens (42) and a third camera lens (43); the first camera lens (41) faces the first mirror (21), the second camera lens (42) faces the second mirror (22) and the fourth mirror (24), and the third camera lens (43) faces the third mirror (23).
2. The platform for detecting the inner and outer side of the tab of a bare cell of claim 1, wherein: The mirror lifting mechanism includes a primary air cylinder (31) and a secondary air cylinder (32); the output end of the primary air cylinder (31) is provided with an L-shaped connecting plate (33), the secondary air cylinder (32) is installed on the L-shaped connecting plate (33), the output end of the secondary air cylinder (32) is provided with an L-shaped base (34), and the second mirror (22) is arranged on the L-shaped base (34).
3. The platform for detecting the inner and outer side of the tab of a bare cell of claim 2, wherein: The cell positioning platform further includes a positioning air cylinder (12) and a positioning pressing block (13); the positioning air cylinder (12) is arranged on both sides of the cell placement table (11), and the positioning pressing block (13) is rotatably installed on the output end of the positioning air cylinder (12).
4. The platform for detecting the inner and outer side of the tab of a bare cell of claim 3, wherein: The first mirror (21) and the third mirror (23) are fixedly installed on the support plate (111) of the cell placement table (11) through a connecting piece.
5. The platform for detecting the inner and outer side of the tab of a bare cell of claim 4, wherein: The front ends of the first camera lens (41), the second camera lens (42) and the third camera lens (43) are respectively provided with ring-shaped light sources (44).
6. The platform for detecting the inner and outer side of the tab of a bare cell of claim 5, wherein: The mirror surface of the first mirror (21) faces the outer side of the first tab (91) and forms a 45-degree angle with the first camera lens (41).
7. The platform for detecting the inner and outer side of the tab of a bare cell of claim 5, wherein: The mirror surface of the second mirror (22) faces the inner side of the first tab (91) and forms a 45-degree angle with the second camera lens (42).
8. The platform for detecting inner and outer side of the tab of the bare cell of claim 5, wherein: The mirror surface of the third mirror (23) faces the outer side of the second tab (92) and forms a 45-degree angle with the third camera lens (43).
9. The platform for detecting inner and outer side of the tab of the bare cell of claim 5, wherein: The mirror surface of the fourth mirror (24) faces the inner side of the second tab (92) and forms a 45-degree angle with the second camera lens (42).