Online pole piece burr detection mechanism and lithium battery production line

Abstract

The utility model discloses an on-line pole piece burr detection mechanism and a lithium battery production line, the on-line pole piece burr detection mechanism comprises a positioning module, a linear driving module and a burr detection module arranged on the linear driving module, the positioning module is used for positioning pole piece products needing burr detection, and the burr detection module is used for detecting burrs of the pole piece products needing burr detection. The linear driving module is used for driving the detection module to linearly move in the transverse direction and / or the longitudinal direction of the pole piece product, and the detection module comprises a detection camera and is used for detecting the burr condition of the pole piece product; the lithium battery production line comprises the online pole piece burr detection mechanism. The online pole piece burr detection mechanism and the lithium battery production line have the characteristics of simple structure and convenience in implementation, and can improve the production efficiency and the product quality in practical application, improve the product safety, prolong the service life and improve the market competitiveness of the product.

Description

Technical Field

[0001] This utility model relates to the field of lithium battery production, and in particular to an online electrode burr detection mechanism and a lithium battery production line. Background Technology

[0002] In the lithium battery manufacturing industry, one process involves die-cutting electrode sheets, typically using a die-cutting blade. The theoretical cutting life of existing die-cutting blades is 1.2 million cycles. However, in actual application, due to factors such as structure and temperature, the cutting life of the blades is significantly reduced, potentially to only 700,000-800,000 cycles. This unstable lifespan of the die-cutting blades affects timely replacement, resulting in poor cutting quality, burrs on the electrode sheets, and negatively impacting the quality of subsequent battery cell production. This increases the defect rate and also affects the safety, stability, and lifespan of the battery cells.

[0003] In the market, visible burrs can be effectively addressed. However, when small burrs are present, they are undetectable to the naked eye due to their small size. Existing conventional offline testing methods take a very long time, which means that some burrs fail to meet the requirements but cannot be observed. As a result, the electrode is directly sent to the stacking table for stacking, which increases the product defect rate and reduces the safety, stability and lifespan of the stacked cells.

[0004] Therefore, in order to improve the safety, stability and service life of battery cells, a new technical solution is urgently needed to address the impact of small burrs without affecting production efficiency. Utility Model Content

[0005] In order to overcome the shortcomings of the existing technology, this utility model provides an online electrode burr detection mechanism and a lithium battery production line, which solves the technical defects of the existing technology, such as the difficulty in detecting tiny burrs on electrode sheets, the impact on product safety and service life, and the impact on efficiency of offline detection.

[0006] The technical solution adopted by this utility model to solve its technical problem is:

[0007] An online electrode burr detection mechanism includes a positioning module, a linear drive module, and a burr detection module disposed on the linear drive module. The positioning module is used to position the electrode product for which burrs need to be detected. The linear drive module is used to drive the detection module to move linearly along the transverse and / or longitudinal direction of the electrode product. The detection module includes a detection camera and is used to detect the burr condition of the electrode product.

[0008] As a further improvement to the above technical solution, the linear drive module has two sets, and the two sets of linear drive modules are symmetrically arranged on both sides of the positioning module.

[0009] As a further improvement to the above technical solution, the detection module has two sets, which are respectively set on two sets of linear drive modules and driven by the linear drive modules to move linearly.

[0010] As a further improvement to the above technical solution, the two sets of linear drive modules are arranged symmetrically on both sides of the positioning module.

[0011] As a further improvement to the above technical solution, the detection module includes a detection module base plate installed at the output end of the linear drive module and a detection camera directly or indirectly disposed on the detection module base plate.

[0012] As a further improvement to the above technical solution, the detection module also includes a detection light source used in conjunction with the detection camera. The detection camera includes a transverse burr detection camera and a longitudinal burr detection camera. The transverse burr detection camera is used to detect burrs on the transverse edge of the electrode product, and the longitudinal burr detection camera is used to detect burrs on the transverse edge of the electrode product.

[0013] As a further improvement to the above technical solution, the positioning module includes a positioning module base and a positioning module alignment robot disposed on the positioning module base. The positioning module alignment robot is provided with a positioning platform, which is a negative pressure positioning platform.

[0014] As a further improvement to the above technical solution, the positioning platform is provided with debris detection light sources on both sides of its upper surface.

[0015] As a further improvement to the above technical solution, the linear drive module includes a drive module support frame and a linear drive motor disposed on the drive module support frame, and the detection module is disposed on the linear drive module and is directly or indirectly connected to the mover of the linear drive motor.

[0016] This utility model also provides:

[0017] A lithium battery production line, the lithium battery production line including the aforementioned online electrode burr detection mechanism.

[0018] The beneficial effects of this utility model are as follows: This utility model provides an online electrode burr detection mechanism and a lithium battery production line. This online electrode burr detection mechanism and lithium battery production line are set up with a linear drive module, a detection module, and a positioning module. The online detection of electrode burrs is achieved through the coordinated operation of the linear drive module, the detection module, and the positioning module. This not only saves time and ensures production efficiency, but also prompts the replacement of the cutter in a timely manner based on the detection results, which helps to reduce the occurrence rate of burrs, further improves the processing quality, safety, and service life of the product, and enhances the market competitiveness of the product.

[0019] In summary, this online electrode burr detection mechanism and lithium battery production line solve the technical defects of existing technologies, such as the difficulty in detecting tiny burrs on electrode sheets, which affects product safety and service life, and the impact of offline detection on efficiency. Attached Figure Description

[0020] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0021] Figure 1 This is an assembly diagram of the online electrode burr detection mechanism in this utility model;

[0022] Figure 2 This is an assembly diagram of the detection module in this utility model;

[0023] Figure 3 This is an assembly diagram of the positioning module in this utility model. Detailed Implementation

[0024] The following will clearly and completely describe the concept, specific structure, and technical effects of this utility model in conjunction with embodiments and accompanying drawings, so as to fully understand the purpose, features, and effects of this utility model. Obviously, the described embodiments are only a part of the embodiments of this utility model, not all of them. Other embodiments obtained by those skilled in the art based on the embodiments of this utility model without creative effort are all within the scope of protection of this utility model. Furthermore, all connections / linkages involved in the patent do not simply refer to direct contact between components, but rather to the ability to form a better connection structure by adding or reducing connecting accessories according to specific implementation conditions. The various technical features in this utility model can be combined interactively without contradicting each other, as described above. Figure 1 , Figure 2 , Figure 3 .

[0025] Specific reference Figure 1 , Figure 2 , Figure 3 This utility model provides:

[0026] An online electrode burr detection mechanism includes a positioning module 1, a linear drive module 2, and a burr detection module 3 disposed on the linear drive module 2. The positioning module 1 is used to position the electrode product 4 for which burrs need to be detected. The linear drive module 2 is used to drive the detection module 3 to move linearly along the transverse and / or longitudinal direction of the electrode product 4. The detection module 3 includes a detection camera and is used to detect the burr condition of the electrode product 4.

[0027] In application, the electrode product 4, which needs to be inspected for burrs, is fixed in position by the positioning module 1. After the electrode product 4 is positioned, the inspection module 3 inspects the horizontal and vertical edges of the electrode product 4 through its inspection camera. During the inspection process of the inspection module 3, the linear drive module 2 drives the inspection module 3 to move linearly to complete the online inspection.

[0028] When the detection module 3 performs burr detection on the electrode product 4, a high-resolution inspection camera is used to detect burrs on the die-cut edges of the electrode product 4. The equipment control device reads the recorded detection data. When the detection feedback indicates no problems, the electrode product 4 is allowed to proceed to the stacking table for stacking. When the detection feedback indicates abnormalities, the electrode product 4 is judged as a NG product and discarded. Simultaneously, the number of defective products is accumulated. When the accumulated number fluctuates to a certain level, the equipment control system automatically analyzes the data and triggers an alarm to remind the equipment operator to replace the cutter. This avoids an increase in the defect rate due to untimely cutter replacement, thus helping to improve product quality.

[0029] Reference Figure 1 In some embodiments, the linear drive module 2 has two sets, symmetrically arranged on both sides of the positioning module 1. The detection module 3 also has two sets, each mounted on one of the two sets of linear drive modules 2 and driven by the linear drive modules 2 to move linearly. The two sets of linear drive modules 2 are centrally symmetrically arranged on both sides of the positioning module 1. In practical applications, each of the two sets of detection modules 3 corresponds to detecting two die-cut edges of the electrode product 4; that is, the first set of detection modules 3 is used to detect the first horizontal and first vertical edges of the electrode product 4, and the second set of detection modules 3 is used to detect the second horizontal and second vertical edges of the electrode product 4. This layout improves the detection efficiency and accuracy of the detection modules 3, contributing to increased production efficiency and detection accuracy.

[0030] Reference Figure 2In some embodiments, the detection module 3 includes a detection module base plate 33 mounted on the output end of the linear drive module 2 and a detection camera directly or indirectly mounted on the detection module base plate 33. In this embodiment, the detection camera includes a transverse burr detection camera 31 and a longitudinal burr detection camera 32. The transverse burr detection camera 31 is used to detect burrs on the transverse edge of the electrode product 4, and the longitudinal burr detection camera 32 is used to detect burrs on the transverse edge of the electrode product 4. By detecting the transverse and longitudinal burr burrs of the electrode product 4 by the transverse burr detection camera 31 and the longitudinal burr detection camera 32 respectively, the detection efficiency is further improved. The transverse burr detection cameras 31 and the longitudinal burr detection cameras 32 of the two sets of detection modules are centrally symmetrically arranged on the positioning module 1. In addition, the detection module 3 also includes a detection light source 34 used in conjunction with the detection camera. The detection light source 34 includes a first detection light source adapted to the transverse burr detection camera 31 and a second detection light source adapted to the longitudinal burr detection camera 32. In actual implementation, the detection module 3 also includes supporting components such as a reflector 35, a manual adjustment slide, and a position fine-tuning electric cylinder for adjusting the position of the detection camera. These components can be used to adjust the position of the detection camera to the optimal level to obtain the most accurate detection results.

[0031] Reference Figure 3 In some embodiments, the positioning module 1 includes a positioning module base 11 and a positioning module alignment robot 12 disposed on the positioning module base 11. The positioning module alignment robot 12 is equipped with a positioning platform 13, which is a negative pressure positioning platform. The positioning module base 11 serves as the support for the entire positioning module 1. The positioning module alignment robot 12 can align and adjust the position of the positioning platform, ensuring that the detection plane of the positioning platform 13 is in the optimal detection position, thereby guaranteeing detection quality. The positioning platform 13 has a negative pressure inner cavity, which is connected to an external negative pressure source. A negative pressure hole communicating with the negative pressure inner cavity is opened on the surface of the positioning platform 13, through which the electrode product 3 to be detected is adsorbed. In this embodiment, the positioning platform 13 has debris detection light sources 14 disposed on both sides of its upper surface. The debris detection light source 14 is a long strip light source, which further supplements the detection light source and further improves the detection accuracy.

[0032] In some embodiments, the linear drive module 2 includes a drive module support frame and a linear drive motor 21 mounted on the drive module support frame. The detection module 3 is mounted on the linear drive module 2 and is directly or indirectly connected to the mover of the linear drive motor 21. In application, the linear drive motor 21 drives the detection module 3 to move linearly to achieve online detection. In some other embodiments, provided that performance requirements are met, implementers may also use other existing linear drive structures that can achieve linear drive performance, such as a motor lead screw slide module, a motor synchronous belt slide module, or a linear electric cylinder module, to replace the linear drive motor 21 in this embodiment, which will not be elaborated further here.

[0033] Based on the above-described online electrode burr detection mechanism, this embodiment also provides:

[0034] A lithium battery production line includes the aforementioned online electrode burr detection mechanism. In this embodiment, the lithium battery production line is a stacking production line, and also includes stacking modules, die-cutting modules, etc.

[0035] The above is a detailed description of the preferred embodiments of the present utility model. However, the present utility model is not limited to the described embodiments. Those skilled in the art can make various equivalent modifications or substitutions without departing from the spirit of the present utility model. All such equivalent modifications or substitutions are included within the scope defined by the claims of this application.

Claims

1. An online electrode burr detection mechanism, characterized in that: The device includes a positioning module (1), a linear drive module (2), and a burr detection module (3) disposed on the linear drive module (2). The positioning module (1) is used to position the electrode product (4) for which burrs need to be detected. The linear drive module (2) is used to drive the detection module (3) to move linearly along the transverse and / or longitudinal direction of the electrode product (4). The detection module (3) includes a detection camera and is used to detect the burr condition of the electrode product (4).

2. The online electrode burr detection mechanism according to claim 1, characterized in that: The linear drive module (2) has two sets, and the two sets of linear drive modules (2) are symmetrically arranged on both sides of the positioning module (1).

3. The online electrode burr detection mechanism according to claim 2, characterized in that: The detection module (3) has two sets, and the two sets of detection modules (3) are respectively set on two sets of linear drive modules (2) and driven by the linear drive modules (2) to move linearly.

4. The online electrode burr detection mechanism according to claim 3, characterized in that: Two linear drive modules (2) are arranged symmetrically on both sides of the positioning module (1).

5. An online pole piece burr detection mechanism according to claim 1, wherein: The detection module (3) includes a detection module base plate (33) installed at the output end of the linear drive module (2) and a detection camera directly or indirectly mounted on the detection module base plate (33).

6. The online electrode burr detection mechanism according to claim 2, characterized in that: The detection module (3) also includes a detection light source (34) used in conjunction with the detection camera. The detection camera includes a transverse burr detection camera (31) and a longitudinal burr detection camera (32). The transverse burr detection camera (31) is used to detect burrs on the transverse edge of the electrode product (4), and the longitudinal burr detection camera (32) is used to detect burrs on the transverse edge of the electrode product (4).

7. The online electrode burr detection mechanism according to claim 1, characterized in that: The positioning module (1) includes a positioning module base (11) and a positioning module alignment robot (12) disposed on the positioning module base (11). The positioning module alignment robot (12) is provided with a positioning platform (13), which is a negative pressure positioning platform.

8. An in-line pole piece burr detection mechanism according to claim 7, wherein: The positioning platform (13) has debris detection light sources (14) on both sides of its upper surface.

9. The online electrode burr detection mechanism according to claim 1, characterized in that: The linear drive module (2) includes a drive module support frame and a linear drive motor (21) mounted on the drive module support frame. The detection module (3) is mounted on the linear drive module (2) and is directly or indirectly connected to the mover of the linear drive motor (21).

10. A lithium battery production line characterized by: The lithium battery production line includes the online electrode burr detection mechanism as described in any one of claims 1-9.

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