Laser welding method and battery

Abstract

The invention discloses a laser welding method and a battery. The laser welding method comprises the steps that a switching mechanism takes out a welded to-be-cleaned cover plate from a welding station; the grabbing mechanism places the cover plate to be cleaned on a conveying part of a cleaning device, and the cleaning device is provided with at least one cleaning station; when the conveying part drives the to-be-cleaned cover plate to move to a cleaning station, a cleaning part of the cleaning device cleans the to-be-cleaned cover plate; the grabbing mechanism is used for taking out the cleaned cover plate from the conveying part and placing the cleaned cover plate on the switching mechanism; and the switching mechanism moves to the next welding station and carries out laser welding. Therefore, through cooperation of the switching mechanism, the grabbing mechanism and the cleaning device, automatic feeding, discharging and cleaning of the cover plate in the laser welding process can be achieved, and therefore the cover plate can be reliably cleaned, meanwhile, the cleaning efficiency is improved, and the influence of the cleaning technology on the laser welding process is avoided.

Description

Technical Field

[0001] The present invention relates to the technical field of cover plate cleaning, and more specifically, the present invention relates to a laser welding method and a battery. Background Art

[0002] In the modern production process, cleaning work is crucial for maintaining a clean environment, improving work efficiency, and ensuring product quality. Especially in the manufacturing industry, for cover plates with small or complex structures such as precision parts and electronic products, impurities such as dust and debris on their surfaces not only affect the aesthetics of the products but may also have an adverse impact on the performance and service life of the products.

[0003] Traditional cleaning methods mostly rely on manual operations, such as manually cleaning with tools like brushes and vacuum cleaners. However, manual cleaning usually requires suspending the production line, resulting in problems such as low efficiency and affecting the production rhythm. Summary of the Invention

[0004] The object of the present invention is to provide a new technical solution for a laser welding method and a battery.

[0005] According to one aspect of the present invention, a laser welding method is provided.

[0006] The laser welding method includes:

[0007] A switching mechanism takes out the cover plate to be cleaned after welding from the welding station;

[0008] A grasping mechanism places the cover plate to be cleaned on the conveying part of a cleaning device, and the cleaning device has at least one cleaning station;

[0009] When the conveying part drives the cover plate to be cleaned to move to the cleaning station, a cleaning part of the cleaning device cleans the cover plate to be cleaned;

[0010] The grasping mechanism takes out the cleaned cover plate from the conveying part and places it on the switching mechanism;

[0011] The switching mechanism moves to the next welding station and performs laser welding.

[0012] Optionally, the cleaning device has at least two cleaning stations, and when the conveying part drives the cover plate to be cleaned to move to the cleaning station, the cleaning part of the cleaning device cleans the cover plate to be cleaned, including:

[0013] When the conveying part drives the cover plate to be cleaned to move to the first cleaning station, the first cleaning part of the cleaning device performs the first cleaning on the cover plate to be cleaned;

[0014] When the conveying part drives the cover plate to be cleaned to the Nth cleaning station, the Nth cleaning part of the cleaning device performs the Nth cleaning on the cover plate to be cleaned, where N is an integer not less than 2.

[0015] Optionally, the number of cleaning parts of the cleaning device is the same as the number of cleaning stations;

[0016] And / or, the structures of multiple cleaning parts are the same.

[0017] Optionally, multiple cleaning parts are arranged in sequence along the conveying direction of the conveying part.

[0018] Optionally, the cover plate has a raised part, the raised part is funnel-shaped, and the grasping mechanism places the cover plate to be cleaned on the conveying part of the cleaning device, including:

[0019] Placing the inner shrinking end of the raised part on the conveying part of the cleaning device, so that the outer expanding end of the raised part faces away from the conveying part.

[0020] Optionally, when the conveying part drives the cover plate to be cleaned to the cleaning station, the cleaning part of the cleaning device cleans the cover plate to be cleaned, including:

[0021] The cleaning part of the cleaning device can extend into the inner shrinking end of the raised part and perform cleaning.

[0022] Optionally, the cleaning part is funnel-shaped. When the cleaning part of the cleaning device extends into the inner shrinking end of the raised part and performs cleaning, the inner shrinking end of the cleaning part faces the inner shrinking end of the raised part.

[0023] Optionally, the cleaning device further includes a blowing part. When the cleaning part of the cleaning device extends into the inner shrinking end of the raised part and performs cleaning, the blowing part can blow air towards the inner shrinking end of the raised part.

[0024] Optionally, the cleaning device further includes a dust suction part. When the cleaning part of the cleaning device extends into the inner shrinking end of the raised part and performs cleaning and the blowing part blows air towards the inner shrinking end of the raised part, the dust suction part can suck out the dust inside the raised part.

[0025] Optionally, the inner shrinking end of the raised part has an opening. When the dust suction part sucks out the dust inside the raised part, the dust suction part faces the opening.

[0026] Optionally, the dust suction part includes a dust suction pipe. Before the dust suction part sucks out the dust inside the raised part, it further includes:

[0027] The dust suction pipe can rise and wrap the opening.

[0028] Optionally, before the gripping mechanism takes out the cleaned cover plate from the conveying part and places it on the switching mechanism, the following steps are further included:

[0029] The cleaning part and the blowing part move away from the cleaned cover plate;

[0030] The dust suction pipe descends and releases the opening.

[0031] According to another aspect of the present invention, a battery is provided, and the battery is manufactured by using the laser welding method described above.

[0032] One technical effect of the present invention is that:

[0033] The laser welding method includes that the switching mechanism takes out the cover plate to be cleaned after welding from the welding station; the gripping mechanism places the cover plate to be cleaned on the conveying part of the cleaning device, and the cleaning device has at least one cleaning station; when the conveying part drives the cover plate to be cleaned to move to the cleaning station, the cleaning part of the cleaning device cleans the cover plate to be cleaned; the gripping mechanism takes out the cleaned cover plate from the conveying part and places it on the switching mechanism; the switching mechanism moves to the next welding station and performs laser welding.

[0034] In this way, by the cooperation of the switching mechanism, the gripping mechanism and the cleaning device, automatic loading and unloading and cleaning of the cover plate during the laser welding process can be realized, so that while the reliable cleaning of the cover plate is achieved, the cleaning efficiency can be improved, and the influence of the cleaning process on the laser welding process can be avoided. Moreover, the cleaning process does not require manual participation, which avoids the uncontrollability of the cleaning effect caused by manual cleaning and also saves labor costs. Among them, the cover plate can be cleaned in time after each welding, so that the cover plate is always a clean cleaned cover plate during welding, which can avoid the welding defects caused by the extrusion of welding dust in the cover plate, and thus can ensure the welding reliability.

[0035] Other features and advantages of the present invention will become clear through the following detailed description of the exemplary embodiments of the present invention with reference to the accompanying drawings. Brief Description of the Drawings

[0036] The drawings forming a part of the specification depict embodiments of the present invention and, together with the description, are used to explain the principles of the present invention.

[0037] Figure 1 is a schematic diagram of a cleaning device according to an embodiment of the present invention;

[0038] Figure 2 is a schematic diagram of a dust suction member according to an embodiment of the present invention;

[0039] Figure 3It is a schematic diagram of a cleaning part according to an embodiment of the present invention;

[0040] Figure 4 It is another schematic diagram of a cleaning part according to an embodiment of the present invention;

[0041] Figure 5 It is a flowchart of a laser welding method according to an embodiment of the present invention;

[0042] Figure 6 It is a schematic diagram of a production system according to an embodiment of the present invention;

[0043] Figure 7 It is a schematic diagram of a cover plate according to an embodiment of the present invention;

[0044] Figure 8 It is another schematic diagram of a cover plate according to an embodiment of the present invention.

[0045] Description of reference numerals:

[0046] 11. Conveyor part;

[0047] 12. Dust suction part; 121. Dust suction pipe; 1211. Main pipe; 1212. Branch pipe; 122. Second driving part; 123. Sealing ring;

[0048] 21. First driving part; 211. Rotation driving part; 212. Lifting driving part; 213. Horizontal driving part;

[0049] 22. Cleaning part; 23. Support; 24. Blowing part;

[0050] 001. Cover plate; 0011. Protruding part. Detailed implementation manners

[0051] Now, various exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings. It should be noted that: unless otherwise specifically stated, the relative arrangements of components and steps, numerical expressions and values set forth in these embodiments do not limit the scope of the present invention.

[0052] The following description of at least one exemplary embodiment is merely illustrative in nature and in no way serves as a limitation on the present invention, its application or use.

[0053] Technologies and devices known to those of ordinary skill in the relevant art may not be discussed in detail, but where appropriate, such technologies and devices should be regarded as part of the specification.

[0054] In all the examples shown and discussed here, any specific value should be construed as merely exemplary and not as a limitation. Therefore, other examples of the exemplary embodiments may have different values.

[0055] It should be noted that like reference numerals and letters refer to like items in the following figures, and thus, once an item is defined in one figure, further discussion thereof is not required in subsequent figures.

[0056] The present invention provides a laser welding method, which can be used in the production process of batteries.

[0057] As Figure 1 、 Figure 5 and Figure 6 shown, the laser welding method provided by the present invention includes:

[0058] S1. The switching mechanism takes out the cover plate to be cleaned after welding from the welding station;

[0059] Specifically, the switching mechanism is used to switch the position of the cover plate 001, and can take out the cover plate to be cleaned from the welding station or place the cleaned cover plate on the welding station, so as to facilitate the grasping mechanism to grasp the cover plate 001 and clean the cover plate 001, and can also ensure the reliability of the welding process. Among them, the switching mechanism can be a robot, a robotic arm or other switching structures.

[0060] S2. The grasping mechanism places the cover plate to be cleaned on the conveying part 11 of the cleaning device, and the cleaning device has at least one cleaning station;

[0061] As Figure 1 and Figure 6 shown, the conveying part 11 includes, but is not limited to, a conveyor belt and a transmission chain, and its surface can be provided with anti-slip strips to prevent the cover plate 001 from sliding during the conveying process, so as to ensure the conveying reliability. The conveying part 11 has a loading station, an unloading station and a cleaning station. The loading station is used to place the cover plate to be cleaned, the cleaning station is used to clean the cover plate to be cleaned, and the unloading station is used to take out the cleaned cover plate.

[0062] The cover plate to be cleaned can be placed at the starting position of the conveying part 11, that is, the loading position, in a predetermined order by a manipulator. Positioning grooves or guide plates can be provided on the conveying part 11 to ensure that the cover plate 001 maintains the correct position and orientation during the conveying process.

[0063] The conveying part 11 can be driven by a third driving member such as a motor, a cylinder, etc., so that the conveying part 11 can continuously convey the cover plate to be cleaned to the cleaning station at a set speed, so as to facilitate the rapid cleaning of the cover plate to be cleaned, thereby not affecting the production efficiency. The automatic conveying of the conveying part 11 eliminates the need for manual handling of loading and unloading, greatly improving the cleaning efficiency.

[0064] S3. When the conveying unit 11 drives the cover plate to be cleaned to the cleaning station, the cleaning unit 22 of the cleaning device cleans the cover plate to be cleaned;

[0065] As Figure 1 shown, when the conveying unit 11 transports the cover plate to be cleaned to the cleaning station, the cleaning unit 22 at this station is immediately activated to perform a predetermined cleaning operation on the cover plate to be cleaned. For example, first, it is preliminarily rinsed by the spray cleaning unit, then enters the ultrasonic cleaning unit for deep cleaning, followed by the brushing unit for physical decontamination, and finally, it is dried by the air-blowing drying unit.

[0066] When the cleaning device has multiple cleaning stations, each cleaning station is provided with a cleaning unit 22. Driven by the conveying unit 11, the cover plate to be cleaned can sequentially pass through multiple cleaning stations and be cleaned at multiple cleaning stations respectively. In this way, multiple cleanings of the cover plate to be cleaned can be achieved during the conveying process of the conveying unit 11, thereby ensuring a better cleaning effect. Moreover, the conveying and cleaning of the cover plate to be cleaned can be carried out simultaneously without the need for a special pause or additional cleaning, which also reduces the impact of the cleaning process on the production rhythm.

[0067] Among them, sensors can be set between the cleaning stations to detect the arrival of the cover plate to be cleaned and trigger the start and stop of the corresponding cleaning unit 22, ensuring that each cover plate to be cleaned can be fully cleaned without wasting resources.

[0068] S4. The grasping mechanism takes out the cleaned cover plate from the conveying unit 11 and places it on the switching mechanism;

[0069] Specifically, after the cleaning process at all cleaning stations is completed, the conveying unit 11 continues to transport the cleaned cover plate to the output end, that is, the blanking station. The manipulator takes the cleaned cover plate off the conveying unit 11 and places it on the switching mechanism here, so that the switching mechanism can drive the cleaned cover plate into the next welding station, which also improves the cooperation between the grasping mechanism and the switching mechanism.

[0070] S5. The switching mechanism moves to the next welding station and performs laser welding.

[0071] In this way, by means of the cooperation of the switching mechanism, the grasping mechanism and the cleaning device, the automatic loading and unloading and cleaning of the cover plate 001 during the laser welding process can be realized. Thus, while ensuring reliable cleaning of the cover plate 001, the cleaning efficiency can be improved, and the influence of the cleaning process on the laser welding process can be avoided. Moreover, the cleaning process does not require manual participation, which avoids the uncontrollability of the cleaning effect caused by manual cleaning and also saves labor costs. Among them, the cover plate 001 can be cleaned in time after each welding, so that the cover plate for welding is always a clean one, which can avoid poor welding caused by the extrusion of welding dust in the cover plate 001, and thus ensure welding reliability.

[0072] Based on the above method, after the cover plate to be cleaned is taken out, the cleaning of the cover plate to be cleaned can be realized during the conveying process of the conveying part 11 of the cleaning device, and thus a better cleaning effect can be ensured. Moreover, the conveying and cleaning of the cover plate to be cleaned can be carried out simultaneously without the need for a special pause or separate cleaning, which also reduces the influence of the cleaning process on the production rhythm.

[0073] Optionally, the cleaning device has at least two cleaning stations. When the conveying part 11 drives the cover plate to be cleaned to move to the cleaning station, the cleaning part 22 of the cleaning device cleans the cover plate to be cleaned, including:

[0074] When the conveying part 11 drives the cover plate to be cleaned to move to the first cleaning station, the first cleaning part of the cleaning device performs the first cleaning on the cover plate to be cleaned;

[0075] When the conveying part 11 drives the cover plate to be cleaned to move to the Nth cleaning station, the Nth cleaning part of the cleaning device performs the Nth cleaning on the cover plate to be cleaned, where N is an integer not less than 2.

[0076] As Figure 1 and Figure 6 shown, the cleaning device may include two cleaning parts 22. Under the conveyance of the conveying part 11, the cover plate to be cleaned can be successively cleaned by these two cleaning parts 22, so as to ensure the cleaning effect. According to the actual design, the cleaning device can also be provided with three, four or even more cleaning parts 22 to meet the cleaning requirements of complex cover plates to be cleaned.

[0077] Optionally, the number of the cleaning parts 22 of the cleaning device is the same as the number of the cleaning stations;

[0078] And / or, the structures of the plurality of cleaning parts 22 are the same.

[0079] Specifically, the number of the cleaning parts 22 of the cleaning device can be set to be the same as the number of the cleaning stations, that is, one cleaning part 22 is provided at each cleaning station, so that the cover plate to be cleaned can sequentially pass through a plurality of cleaning stations under the drive of the conveying part 11 and be cleaned at the plurality of cleaning stations respectively.

[0080] Among them, the structures of the plurality of cleaning parts 22 can also be set to be the same. On the one hand, the plurality of cleaning parts 22 can be interchangeably used, which is convenient for the replacement of the cleaning parts 22; on the other hand, setting the structures of the plurality of cleaning parts 22 to be the same is also convenient for controlling the cleaning duration and cleaning path of each cleaning part 22, thereby reducing the control difficulty.

[0081] Optionally, the plurality of cleaning parts 22 are arranged in sequence along the conveying direction of the conveying part 11. Under the drive of the conveying part 11, the cover plate to be cleaned can sequentially pass through a plurality of cleaning stations and be cleaned at the plurality of cleaning stations respectively. In this way, multiple cleanings of the cover plate to be cleaned can be realized during the conveying process of the conveying part 11, and thus a better cleaning effect can be ensured. Moreover, the conveying and cleaning of the cover plate to be cleaned can be carried out simultaneously without specifically pausing or cleaning separately, which also reduces the influence of the cleaning process on the production rhythm.

[0082] In another embodiment, the plurality of cleaning parts 22 can also be arranged in an array along the conveying direction of the conveying part 11, which is convenient for adapting to a cover plate to be cleaned with a larger size or cleaning a plurality of cover plates to be cleaned simultaneously.

[0083] Optionally, the cover plate 001 has a convex part 0011, and the convex part 0011 is in a funnel shape. The grasping mechanism places the cover plate to be cleaned on the conveying part 11 of the cleaning device, including:

[0084] Placing the inner contracting end of the convex part 0011 on the conveying part 11 of the cleaning device, so that the outer expanding end of the convex part 0011 faces away from the conveying part 11.

[0085] As Figure 7 and Figure 8 shown, during the laser welding process, the convex part 0011 of the cover plate 001 is usually upward and covers above the battery cell, so as to collect the welding dust during the welding process, so that the welding dust can fall into the convex part 0011, thereby avoiding welding abnormalities caused by the overflow of welding dust and reducing the pollution of the welding process to the environment.

[0086] Among them, setting the convex part 0011 to be in a funnel shape can facilitate the convex part 0011 to collect the welding dust during the welding process, so that the welding dust falls on the inner wall of the convex part 0011.

[0087] As Figure 1As shown, at the loading station, the grasping mechanism grasps the cover plate to be cleaned and places it on the conveying part 11 of the cleaning device, such that the retracted end of the protruding part 0011 faces downward and the expanded end faces upward. This facilitates the cleaning part 22 to extend into the retracted end of the protruding part 0011 from above for comprehensive cleaning, and also facilitates the dust suction part 12 to suck out the welding dust inside the protruding part 0011 from the retracted end of the protruding part 0011 below, thereby realizing the cleaning of the cover plate 001.

[0088] Optionally, when the conveying part 11 drives the cover plate to be cleaned to move to the cleaning station, the cleaning part 22 of the cleaning device cleans the cover plate to be cleaned, including:

[0089] The cleaning part 22 of the cleaning device can extend into the retracted end of the protruding part 0011 and perform cleaning.

[0090] As Figure 1 shown, when the conveying part 11 drives the cover plate to be cleaned to move to the cleaning station, the cleaning part 22 at the corresponding cleaning station can extend into the retracted end of the protruding part 0011 from above for comprehensive cleaning, and at the same time can also avoid interfering with the conveyance of the conveying part 11.

[0091] Optionally, the cleaning part 22 is in a funnel shape. When the cleaning part 22 of the cleaning device extends into the retracted end of the protruding part 0011 and performs cleaning, the retracted end of the cleaning part 22 faces the retracted end of the protruding part 0011.

[0092] As Figure 3 shown, it can be set that the cleaning part 22, that is, the cleaning head, is adapted to the shape of the protruding part 0011, which facilitates the cleaning part 22 to extend into the retracted end of the protruding part 0011 from above for comprehensive cleaning, and can also improve the cleaning efficiency.

[0093] Optionally, the cleaning assembly includes a first driving part 21 and a cleaning part 22, and the cleaning part 22 is in transmission connection with the driving end of the first driving part 21;

[0094] Under the drive of the first driving part 21, the cleaning part 22 can extend into the cover plate to be cleaned and perform cleaning.

[0095] As Figure 3 and Figure 4 shown, the first driving part 21 includes but is not limited to a cylinder and a motor. Connect the driving end of the first driving part 21 to the cleaning part 22 in transmission, such that under the drive of the first driving part 21, the cleaning part 22 can move accordingly. Among them, the driving force of the first driving part 21 can include at least one of a horizontal driving force, a vertical driving force, and a rotational driving force.

[0096] The cleaning part 22 can be a sponge brush, a wire brush, etc. The bristles of the brush can be made of wear-resistant and soft materials to adapt to the surfaces of the covers to be cleaned with different materials. The cleaning part 22 is connected to the driving end of the first driving part 21, so that under the driving of the first driving part 21, the cleaning part 22 can move correspondingly and approach or move away from the cleaning station.

[0097] Among them, through the precise control of the first driving part 21, the movement track and speed of the cleaning part 22 can be adjusted according to needs, ensuring a comprehensive and in-depth cleaning of the surface of the cover to be cleaned, and avoiding the problems of omission and uneven cleaning that may exist in traditional manual cleaning.

[0098] When the cover to be cleaned reaches the cleaning station, the first driving part 21 can drive the cleaning part 22 to extend into the cover to be cleaned and perform rotational cleaning or reciprocating movement cleaning on the cover to be cleaned.

[0099] Optionally, the first driving part 21 includes a rotational driving part 211. The driving end of the rotational driving part 211 is connected to the cleaning part 22, and the rotational driving part 211 can drive the cleaning part 22 to perform a rotational movement and perform rotational cleaning on the cover to be cleaned.

[0100] As Figure 3 and Figure 4 shown, the rotational driving part 211 can be a rotational motor or a rotational cylinder. The rotational driving part 211 can drive the cleaning part 22 to perform a rotational movement and perform rotational cleaning on the cover to be cleaned, so as to be able to clean the surface of the cover to be cleaned multiple times, thereby improving the cleaning ability of the cleaning device.

[0101] Among them, the rotational driving part 211 can be a servo motor. The servo motor can control the rotational track and rotational speed of the cleaning part 22 according to a preset program to ensure that each cover to be cleaned can be cleaned evenly and thoroughly. Moreover, the servo motor can also precisely control the pressure and speed applied by the cleaning part 22 to ensure effective cleaning of the surface of the cover to be cleaned, while also avoiding damage to the surface of the cover to be cleaned.

[0102] Optionally, the cleaning assembly further includes a support 23. The first driving part 21 and the cleaning part 22 are respectively arranged on the support 23. The first driving part 21 further includes a lifting driving part 212. The driving end of the lifting driving part 212 is connected to the support 23, and the lifting driving part 212 can drive the support 23 to perform a lifting movement and approach or move away from the cleaning station.

[0103] As Figure 3 and Figure 4As shown, the support 23 is used to install and support other structures such as the cleaning part 22 and the first driving part 21. The lifting driving part 212 can be a linear motor or a telescopic cylinder. The lifting driving part 212 can drive the support 23 to descend and approach the cleaning station, so that the cleaning part 22 can extend into the cover plate to be cleaned and clean the cover plate to be cleaned. The lifting driving part 212 can also drive the support 23 to rise and move away from the cleaning station, at this time, it can avoid interfering with the conveying of the conveying part 11, so as to facilitate the continuous cleaning of the cover plate to be cleaned.

[0104] Optionally, the first driving part 21 further includes a horizontal driving part 213, the driving end of the horizontal driving part 213 is connected to the support 23, and the horizontal driving part 213 can drive the support 23 to move horizontally and approach or move away from the cleaning station.

[0105] As Figure 3 and Figure 4 shown, the horizontal driving part 213 can be a linear motor or a telescopic cylinder, which is used to drive the support 23 to move horizontally along the X-axis and Y-axis, so as to be able to approach or move away from the cleaning station in the horizontal direction, so as to facilitate adapting to different working conditions.

[0106] Optionally, a plurality of the cleaning parts 22 are provided on the support 23, and each cleaning part 22 is connected to the driving end of a rotation driving part 211.

[0107] Specifically, the number and arrangement mode of the cleaning parts 22 on the support 23 can be matched according to the size and shape of the cover plate to be cleaned, such as linear arrangement, array arrangement, etc., so as to facilitate the efficient cleaning of the cover plate to be cleaned by a plurality of cleaning parts 22.

[0108] Among them, each cleaning part 22 is connected to the driving end of a rotation driving part 211, that is, a plurality of cleaning parts 22 are independently controlled, so as to facilitate adjusting the cleaning pressure and cleaning path of the cleaning parts 22 at different positions according to the cover plate to be cleaned.

[0109] Optionally, the cleaning part 22 is a cleaning brush, and the brush head of the cleaning brush can extend into the convex part 0011 of the cover plate to be cleaned and rotate for cleaning.

[0110] Specifically, the brush part of the cleaning part 22 can be replaced with brush heads of different hardnesses and shapes according to the material and shape of the cover plate to be cleaned, such as sponge brushes, wire brushes, etc., so as to meet diverse cleaning needs.

[0111] As Figure 3As shown, the cleaning brush can be connected to the output shaft of the rotary drive member 211 so that the rotary drive member 211 drives the cleaning brush to rotate and perform cleaning. Among them, the cleaning brush can be in a conical structure with a small head and a large tail, so that the brush head of the cleaning brush can extend into the convex portion 0011 of the cover plate to be cleaned and perform efficient cleaning.

[0112] Optionally, the cleaning device further includes a blowing portion 24. When the cleaning portion 22 of the cleaning device extends into the inner contraction end of the convex portion 0011 and performs cleaning, the blowing portion 24 can blow air toward the inner contraction end of the convex portion 0011.

[0113] As Figure 3 shown, the blowing portion 24 can be sleeved on the connecting rod of the cleaning portion 22. While the rotary drive member 211 rotates and drives the cleaning portion 22 to rotate and clean, the blowing portion 24 can also rotate together. In this way, the blowing portion 24 can evenly blow air toward the inner contraction end of the convex portion 0011 of the cover plate to be cleaned, so as to facilitate the cleaning of the cleaning portion 22. The cooperation of the two can improve the cleaning ability and cleaning efficiency of the cleaning portion 22. Among them, the blowing portion 24 can be in a structure with a small head and a large tail, so that the gas can gather at the head, thereby strengthening the blowing force toward the inner contraction end of the convex portion 0011.

[0114] Optionally, the cleaning device further includes a dust suction portion 12. When the cleaning portion 22 of the cleaning device extends into the inner contraction end of the convex portion 0011 and performs cleaning, and the blowing portion 24 blows air toward the inner contraction end of the convex portion 0011, the dust suction portion 12 can suck out the dust in the convex portion 0011.

[0115] Specifically, the dust suction portion 12 can include a dust suction hood or a dust suction pipe 121, which is connected to the frame and opposite to the cleaning station. One end of the dust suction portion 12 faces the cleaning station, and the other end of the dust suction portion 12 is connected to an external vacuum cleaner or a recycling bin (not shown in the figure), so as to be able to suck foreign matters such as dust and debris at the cleaning station to the external vacuum cleaner or recycling bin, and can also ensure that the dust suction range covers the entire cleaning station area, thereby ensuring the cleaning effect of the cleaning device.

[0116] Among them, a flow guide plate with adjustable wind direction can be additionally arranged inside the dust suction hood to make the dust suction efficiency higher and reduce the dust suction noise at the same time.

[0117] When the cover plate to be cleaned reaches the cleaning station, the first drive member 21 can drive the cleaning portion 22 to extend into the inner contraction end of the convex portion 0011 of the cover plate to be cleaned and perform rotational cleaning or reciprocating movement cleaning, the blowing portion 24 blows air toward the inner contraction end of the convex portion 0011, and at the same time, the dust suction portion 12 can approach the cleaning station and suck out the dust cleaned by the cleaning portion 22.

[0118] In this way, the cooperation among the cleaning part 22, the air blowing part 24 and the dust suction part 12 at the cleaning station can achieve the cleaning and timely recovery of dust, stains, etc. at the cleaning station. Thus, while achieving good and efficient cleaning of the cover plate to be cleaned, it also ensures the cleanliness of the cleaning station, ensures that the surface of the cover plate 001 after cleaning is clean and residue-free, avoids secondary pollution of dust, and also guarantees the cleanliness of the working environment.

[0119] Moreover, the cooperation among the cleaning part 22, the dust suction part 12 and the conveying part 11 can achieve continuous and automatic cleaning of the cover plate to be cleaned conveyed to the cleaning station by the conveying part 11, improve the cleaning efficiency of the cleaning device, and also reduce the impact of the cleaning process of the cover plate 001 on production.

[0120] Optionally, the retracted end of the convex part 0011 has an opening, and when the dust suction part 12 sucks the dust inside the convex part 0011, the dust suction part 12 faces the opening. As Figure 1 shown, setting the dust suction part 12 to face the opening at the retracted end of the convex part 0011 enables the welding dust inside the convex part 0011 to directly fall into the dust suction part 12 under the action of gravity, or enables the welding dust to be smoothly sucked into the dust suction part 12 under the suction of the dust suction part 12, both of which can ensure the convenience of dust suction of the dust suction part 12.

[0121] Optionally, the dust suction part 12 includes a dust suction pipe 121. Before the dust suction part 12 sucks the dust inside the convex part 0011, it further includes:

[0122] The dust suction pipe 121 can rise and wrap the opening.

[0123] As Figure 1 and Figure 2 shown, the dust suction pipe 121 can be a single pipe or a combination of multiple pipes. The second driving part 122 includes but is not limited to a motor and a cylinder. Under the forward drive of the second driving part 122, the dust suction pipe 121 can rise and wrap the opening at the retracted end of the convex part 0011. At this time, the dust suction pipe 121 can conveniently suck the dust at the retracted end of the convex part 0011. Under the reverse drive of the second driving part 122, the dust suction pipe 121 can descend and release the opening at the retracted end of the convex part 0011. At this time, it can avoid interfering with the conveying of the conveying part 11.

[0124] Among them, the forward drive and reverse drive of the second driving part 122 can be realized by the forward and reverse rotation of the motor, or can be realized by the telescopic movement of the cylinder expansion link.

[0125] Optionally, the dust suction pipe 121 includes a main pipe 1211 and a plurality of branch pipes 1212. The main pipe 1211 is in transmission connection with the driving end of the second driving member 122. The first end of each branch pipe 1212 is connected to the main pipe 1211, and the second end of each branch pipe 1212 faces the cleaning station.

[0126] As Figure 1 and Figure 2 shown, each branch pipe 1212 communicates with the main pipe 1211, so that the dust sucked by the branch pipe 1212 can flow into the main pipe 1211 and then be transported to an external vacuum cleaner or recycling bin, thereby ensuring the cleanliness of the cleaning station, ensuring that the surface of the cover plate 001 after cleaning is clean and residue-free, avoiding secondary pollution of dust, and also ensuring the cleanliness of the working environment.

[0127] In addition, the arrangement of the plurality of branch pipes 1212 can expand the dust suction range and dust suction capacity of the dust suction pipe 121, thereby improving the cleaning capacity and cleaning efficiency of the cleaning device.

[0128] Optionally, the main pipe 1211 is horizontally arranged, and there is an included angle between the branch pipe 1212 and the main pipe 1211.

[0129] As Figure 1 and Figure 2 shown, the main pipe 1211 can be horizontally arranged, that is, the arrangement direction of the main pipe 1211 is parallel to the conveying direction of the cover plate on the conveying part 11, which can utilize the conveying direction of the conveying part 11 to increase the length of the main pipe 1211, thereby facilitating the connection of a plurality of branch pipes 1212. The upper end of the branch pipe 1212 is vertical and the lower end is inclined toward the side close to the main pipe 1211, which is convenient for connecting to the connection end of the main pipe 1211, and at the same time can make full use of gravity to achieve efficient recovery of dust.

[0130] As Figure 1 and Figure 2 shown, two branch pipes 1212 can be arranged to be connected to the connection end of the main pipe 1211 together, that is, a structure similar to a Y shape is formed, which can achieve efficient recovery of dust while making full use of gravity, save pipeline layout, and reduce the cost of the cleaning device.

[0131] Of course, the branch pipe 1212 can also be directly vertically arranged or inclinedly arranged to meet different layout requirements.

[0132] Optionally, the dust suction part 12 further includes a sealing ring 123. The sealing ring 123 is attached to the inner wall of the second end, and the sealing ring 123 can form an interference fit with the retracted end of the convex part 0011 of the cover plate to be cleaned. As Figure 2As shown, the sealing ring 123 is adapted to the retracted end shape of the raised portion 0011 of the cover plate to be cleaned and can form an interference fit, that is, there is no gap between the sealing ring 123 and the retracted end of the raised portion 0011 of the cover plate to be cleaned, so that the dust suction portion 12 can better wrap the outer wall of the opening at the retracted end of the raised portion 0011, thereby avoiding the re - contamination of the cover plate to be cleaned caused by dust overflow, splashing, etc. during the dust suction process of the dust suction portion 12.

[0133] Optionally, before the grasping mechanism takes out the cleaned cover plate from the conveying portion 11 and places it on the switching mechanism, it further includes:

[0134] The cleaning portion 22 and the blowing portion 24 are away from the cleaned cover plate;

[0135] The dust suction pipe 121 descends and releases the opening.

[0136] Specifically, the conveying portion 11 at the cleaning station may have a dust suction hole, so that the dust suction pipe 121 below can pass through the dust suction hole and wrap the opening at the retracted end of the raised portion 0011, thereby sucking out the dust inside the raised portion 0011.

[0137] During cleaning, under the forward drive of the second driving member 122, the dust suction pipe 121 can first rise and wrap the opening at the retracted end of the raised portion 0011, and then the dust suction pipe 121 can drive the cover plate to be cleaned to rise a little distance together, so as to facilitate the cleaning by the cleaning portion 22 and the blowing portion 24 above. Among them, the distance that the dust suction pipe 121 drives the cover plate to be cleaned to rise together is adapted to the positions of the cleaning portion 22 and the blowing portion 24 above, which can ensure a good cleaning effect.

[0138] After the cleaning is completed, the cleaning portion 22 and the blowing portion 24 first stop cleaning and move away from the cleaned cover plate. At this time, the dust suction pipe 121 can still continue to suck out the remaining dust in the raised portion 0011. After the suction is completed, the dust suction pipe 121 first drives the cover plate to be cleaned back to the conveying portion 11 and then descends and releases the opening. At this time, under the drive of the conveying portion 11, the cleaned cover plate can move to the blanking station to facilitate the transfer by the grasping mechanism.

[0139] In another embodiment, it is also possible to use the forward drive of the second driving member 122 to only drive the dust suction pipe 121 to rise alone and wrap the opening at the retracted end of the raised portion 0011, or use the reverse drive of the second driving member 122 to only drive the dust suction pipe 121 to descend alone and release the opening at the retracted end of the raised portion 0011, while the cover plate 001 is always on the conveying portion 11, and the dust suction effect of the dust suction pipe 121 can also be achieved.

[0140] The present invention also provides a battery, which is manufactured by using the laser welding method described above. The laser welding method is commonly used in the welding process of batteries.

[0141] In the above embodiments, the differences between the embodiments are mainly described. As long as the different optimization features between the embodiments are not contradictory, they can be combined to form a better embodiment. For the sake of brevity, it will not be elaborated here.

[0142] Although some specific embodiments of the present invention have been described in detail by way of examples, those skilled in the art should understand that the above examples are only for illustration purposes and not for limiting the scope of the present invention. Those skilled in the art should understand that the above embodiments can be modified without departing from the scope and spirit of the present invention. The scope of the present invention is defined by the appended claims.

Claims

1. A laser welding method, characterized in that, Including: The switching mechanism takes out the cover plate to be cleaned after welding from the welding station; The grasping mechanism places the cover plate to be cleaned on the conveying part of the cleaning device, and the cleaning device has at least one cleaning station; When the conveying part drives the cover plate to be cleaned to move to the cleaning station, the cleaning part of the cleaning device cleans the cover plate to be cleaned; The grasping mechanism takes out the cleaned cover plate from the conveying part and places it on the switching mechanism; The switching mechanism moves to the next welding station and performs laser welding.

2. The laser welding method according to claim 1, wherein The cleaning device has at least two cleaning stations. When the conveying part drives the cover plate to be cleaned to move to the cleaning station, the cleaning part of the cleaning device cleans the cover plate to be cleaned, including: When the conveying part drives the cover plate to be cleaned to move to the first cleaning station, the first cleaning part of the cleaning device performs the first cleaning on the cover plate to be cleaned; When the conveying part drives the cover plate to be cleaned to move to the Nth cleaning station, the Nth cleaning part of the cleaning device performs the Nth cleaning on the cover plate to be cleaned, where N is an integer not less than 2.

3. The laser welding method according to claim 2, wherein The number of cleaning parts of the cleaning device is the same as the number of cleaning stations; And / or, the structures of multiple cleaning parts are the same.

4. The laser welding method according to claim 2, wherein Multiple cleaning parts are arranged in sequence along the conveying direction of the conveying part.

5. The laser welding method according to claim 1, characterized in that, The cover plate has a raised part, and the raised part is in a funnel shape. The grasping mechanism places the cover plate to be cleaned on the conveying part of the cleaning device, including: Placing the inner contracting end of the raised part on the conveying part of the cleaning device, so that the outer expanding end of the raised part faces away from the conveying part.

6. The laser welding method according to claim 5, wherein When the conveying part drives the cover plate to be cleaned to move to the cleaning station, the cleaning part of the cleaning device cleans the cover plate to be cleaned, including: The cleaning part of the cleaning device can extend into the inner contracting end of the raised part and perform cleaning.

7. The laser welding method according to claim 6, wherein The cleaning part is in a funnel shape. When the cleaning part of the cleaning device extends into the inner contracting end of the raised part and performs cleaning, the inner contracting end of the cleaning part faces the inner contracting end of the raised part.

8. The laser welding method according to claim 6, characterized in that, The cleaning device further includes a blowing part. When the cleaning part of the cleaning device extends into the inner contracting end of the raised part and performs cleaning, the blowing part can blow air towards the inner contracting end of the raised part.

9. The laser welding method according to claim 8, wherein The cleaning device further includes a dust suction part. When the cleaning part of the cleaning device extends into the inner contracting end of the raised part and performs cleaning and the blowing part blows air towards the inner contracting end of the raised part, the dust suction part can suck out the dust inside the raised part.

10. The laser welding method according to claim 9, characterized in that, The inner contracting end of the raised part has an opening. When the dust suction part sucks out the dust inside the raised part, the dust suction part faces the opening.

11. The laser welding method according to claim 10, characterized in that, The dust suction part includes a dust suction pipe. Before the dust suction part sucks out the dust inside the raised part, it further includes: The dust suction pipe can rise and wrap the opening.

12. The laser welding method according to claim 11, wherein Before the grasping mechanism takes out the cleaned cover plate from the conveying part and places it on the switching mechanism, it further includes: The cleaning part and the blowing part move away from the cleaned cover plate; The dust suction pipe descends and releases the opening.

13. A battery, characterized in that, The battery is manufactured by using the laser welding method described in any one of claims 1 to 12.

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