Welding equipment and battery monomer production line

Abstract

The embodiment of the utility model provides welding equipment and a battery monomer production line, the welding equipment comprises a welding nozzle and a cleaning mechanism, the welding nozzle is provided with a welding cavity, the cleaning mechanism is used for cleaning welding slag adhered to the cavity wall of the welding cavity, the cleaning mechanism comprises a cleaning assembly and a driving assembly, and the cleaning assembly comprises a main body and a scraping plate; the scraping plate is connected to the body and protrudes out of the peripheral face of the body, the driving assembly is connected to the cleaning assembly, the driving assembly is configured to drive the cleaning assembly to move so that the cleaning assembly can enter or move out of the welding cavity, the driving assembly can drive the cleaning assembly to move to a first position, and at least part of the cleaning assembly is located in the welding cavity in the first position; in the radial direction of the welding nozzle, a first gap is formed between the surface of the end, away from the peripheral face of the main body, of the scraper blade and the cavity wall of the welding cavity, the driving assembly drives the scraper blade to rotate, the scraper blade makes contact with welding slag so that the welding slag can be separated from the cavity wall of the welding cavity, the value of the first gap is L, and L is larger than or equal to 0.5 mm and smaller than or equal to 1 mm.

Description

Technical Field

[0001] This application relates to the field of battery technology, and more specifically, to a welding device and a battery cell production line. Background Technology

[0002] During battery production, welding equipment is used to weld the batteries through welding nozzles. During the welding process, the welding slag produced by welding will cause a lot of welding slag to stick to the cavity wall of the welding nozzle. If the welding slag stuck to the cavity wall of the welding nozzle reaches a certain level, it will block the light and cause the product to have poor solder joints. Therefore, the welding nozzle needs to be cleaned regularly. Utility Model Content

[0003] In view of the above problems, this application provides a welding equipment and a battery cell production line, which helps to improve the welding quality of the welding equipment.

[0004] In a first aspect, this application provides a welding apparatus, comprising: a welding nozzle having a welding cavity; and a cleaning mechanism for cleaning welding slag adhering to the cavity wall of the welding cavity. The cleaning mechanism includes a cleaning component and a driving component. The cleaning component includes a body and a scraper. The scraper is connected to the body and protrudes from the outer peripheral surface of the body. The driving component is connected to the cleaning component and configured to drive the cleaning component to move, so that the cleaning component enters or exits the welding cavity. The driving component is also configured to drive the scraper to rotate. The driving component is capable of driving the cleaning component to move to a first position. In the first position, at least a portion of the cleaning component is located in the welding cavity. Along the radial direction of the welding nozzle, a first gap exists between the end surface of the scraper away from the outer peripheral surface of the body and the cavity wall of the welding cavity. In the first position, the driving component is configured to drive the scraper to rotate, so that the scraper contacts the welding slag to separate the welding slag from the cavity wall of the welding cavity. The value of the first gap is L, 0.5mm ≤ L ≤ 1mm.

[0005] In some embodiments of the first aspect, the cleaning mechanism includes a cleaning component and a driving component. The scraper included in the cleaning component can contact the welding slag adhering to the cavity wall of the welding nozzle, so as to separate the welding slag from the cavity wall, thereby cleaning the welding nozzle. Since the scraper has a certain strength, it is beneficial to improve the cleaning effect of the cleaning mechanism on the welding nozzle, thereby improving the cleanliness of the welding nozzle and thus improving the welding quality of the welding equipment. Furthermore, the scraper is spaced apart from the cavity wall, and the first gap between the scraper and the cavity wall is set between 0.5 mm and 1 mm, so that the scraper can smoothly clean the welding slag while reducing the risk of the scraper contacting the cavity wall, thereby improving the service life of the scraper, which in turn improves the service life of the cleaning mechanism and the welding nozzle, and thus improves the service life of the welding equipment. In addition, driving the cleaning component to move by the driving component also facilitates the automated design of the cleaning mechanism, thereby improving the welding efficiency of the welding equipment.

[0006] In some embodiments, in a first position, the body and the welding nozzle are coaxially arranged.

[0007] By setting it up in the above way, the possibility of the scraper coming into contact with the cavity wall during the rotation process can be further reduced.

[0008] In some embodiments, 0.5mm ≤ L ≤ 0.75mm.

[0009] By further setting the value of the first gap within the above range, it is beneficial to further improve the cleaning effect and service life of the cleaning mechanism.

[0010] In some embodiments, along the axial direction of the welding nozzle, the welding cavity includes a first cavity and a second cavity that are connected in communication, and the scraper has a first scraper portion and a second scraper portion that are connected in communication; in a first position, at least a portion of the first scraper portion is located in the first cavity, and at least a portion of the second scraper portion is located in the second cavity; radially, a first gap is formed between the end surface of the first scraper portion away from the outer peripheral surface of the body and the cavity wall of the first cavity, and a first gap is formed between the end surface of the second scraper portion away from the outer peripheral surface of the body and the cavity wall of the second cavity.

[0011] By setting it up in the above way, the possibility of the scraper coming into contact with the cavity wall can be further reduced.

[0012] In some embodiments, the welding cavity further includes a third cavity, and the scraper further has a third scraper portion. Along the axial direction of the welding nozzle, the third cavity communicates with the side of the second cavity away from the first cavity, and the third scraper portion is connected to the side of the second scraper portion away from the first scraper portion. In a first position, at least a portion of the third scraper portion is located in the third cavity, and a first gap is formed between the end surface of the third scraper portion away from the outer peripheral surface of the body and the cavity wall of the third cavity in the radial direction.

[0013] By setting it up in the above way, the possibility of the scraper coming into contact with the cavity wall can be further reduced.

[0014] In some embodiments, the main body has a first main body portion, a second main body portion, and a third main body portion connected together. A first scraper portion is connected to the first main body portion, a second scraper portion is connected to the second main body portion, and a third scraper portion is connected to the third main body portion. The shape of the first main body portion is the same as the shape of the first cavity, the shape of the second main body portion is the same as the shape of the second cavity, and the shape of the third main body portion is the same as the shape of the third cavity.

[0015] By using a contoured design of the welding cavity between the main body and the welding nozzle, the processing and manufacturing of the cleaning mechanism is facilitated, and the possibility of the scraper coming into contact with the cavity wall is also reduced.

[0016] In some embodiments, there are multiple scrapers, which are distributed at intervals along the circumference of the main body. This arrangement improves the cleaning effect of the cleaning components, thereby increasing the cleanliness of the welding nozzle and ultimately improving the welding quality of the welding equipment.

[0017] In some embodiments, the drive assembly is connected to the body, and the scraper is fixedly connected to the body.

[0018] In the above technical solution, the drive component is used to control the movement of the main body, thereby driving the scraper to move accordingly. This facilitates the assembly of the drive component and the cleaning component, and also helps to reduce the impact of assembly on the scraper.

[0019] In some embodiments, the welding nozzle further has a first end and a second end facing opposite directions along its own axial direction. The first end is provided with a first opening communicating with the welding cavity, and the second end is provided with a second opening communicating with the welding cavity. The area of ​​the first opening is larger than the area of ​​the second opening, and the driving component is capable of driving at least part of the cleaning component to enter or exit the welding cavity through the first opening.

[0020] The above configuration facilitates the entry of the cleaning components into the welding cavity to move to the first position.

[0021] In some embodiments, in a first position, along the axial direction, one end of the scraper away from the first opening is located on the side of the second opening away from the welding cavity.

[0022] By setting it up in the above manner, the scraper can be made to fully contact the welding slag adhering to the cavity wall near the second end of the welding nozzle, thereby improving the cleaning effect of the cleaning mechanism.

[0023] In some embodiments, the cleaning mechanism further includes a positioning component, the main body is provided with a positioning part, the positioning component is configured to obtain a first coordinate of the center of the positioning part and a second coordinate of the center of the second end, and the driving component is further configured to drive the cleaning component to move to a first position according to the first coordinate and the second coordinate.

[0024] In the above technical solution, by setting a positioning component, the driving component can accurately move the cleaning component to the first position, and then drive the scraper to rotate to clean the welding nozzle, which helps to improve the accuracy of the cleaning component in cleaning welding slag.

[0025] In some embodiments, the body has a third end and a fourth end facing opposite directions along the axial direction, the fourth end being provided with a positioning portion, and in a first position, the fourth end is closer to the second end relative to the first end.

[0026] By setting it up in the above way, it is easy for the positioning component to obtain the first coordinate of the center of the positioning part.

[0027] In some embodiments, the positioning component includes a first imaging element along the axial direction, disposed on the side of the second end opposite to the first end. The first imaging element is configured to capture position images of the positioning part and the second end. This configuration facilitates the acquisition of the first and second coordinates.

[0028] In some embodiments, the positioning portion includes a groove at the fourth end, and / or the positioning portion is provided at the center of the fourth end.

[0029] By adopting the above-mentioned design, it is beneficial to reduce the possibility of interference between the positioning part and the welding nozzle, as well as the possibility of interference between the positioning part and other components. Furthermore, it can reduce the weight of the main body, thereby reducing the weight and cost of the cleaning mechanism. In addition, it is also convenient for processing and manufacturing.

[0030] In some embodiments, the cleaning mechanism further includes a detection component, which includes a second imaging element and a background plate. The cleaning mechanism has a detection state in which, along the axial direction, the background plate is disposed on the side of the first end opposite to the second end, and the second imaging element is disposed on the side of the second end opposite to the first end. The background plate is configured to display an image captured by the second imaging element.

[0031] By setting it up in the above way, the cleanliness of the cavity wall of the welding nozzle after cleaning can be detected, thereby further improving the reliability of the cleaning mechanism and thus further improving the welding quality of the welding equipment.

[0032] In some embodiments, the cleaning mechanism further includes a suction component, and the periphery of the welding nozzle is provided with a slag discharge hole communicating with the welding cavity, and the suction component is in communication with the slag discharge hole.

[0033] In the above technical solution, the suction component can suck away the welding slag in the welding cavity, so that the welding slag leaves the welding cavity, which helps to improve the cleaning efficiency of the cleaning mechanism for welding slag.

[0034] Secondly, this application provides a battery cell production line, including welding equipment provided according to any embodiment of the second aspect.

[0035] The above description is only an overview of the technical solution of this application. In order to better understand the technical means of this application and to implement it in accordance with the contents of the specification, and to make the above and other objects, features and advantages of this application more obvious and understandable, the following are specific embodiments of this application. Attached Figure Description

[0036] To more clearly illustrate the technical solutions of the embodiments of this application, the drawings used in the embodiments of this application will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on the drawings without creative effort.

[0037] Figure 1 A partial structural schematic diagram of the cleaning mechanism in a welding device provided in some embodiments of this application;

[0038] Figure 2 This is a partial structural schematic diagram of a welding device provided in some embodiments of this application;

[0039] Figure 3 Partial cross-sectional view of a welding apparatus provided in some embodiments of this application;

[0040] Figure 4 A partial cross-sectional view of the cleaning mechanism in a first position in a welding apparatus provided in some embodiments of this application;

[0041] Figure 5 for Figure 4 Enlarged view of point P in the middle;

[0042] Figure 6 This is a schematic diagram of an image captured by a first imaging element in a welding apparatus provided in some embodiments of this application;

[0043] Figure 7 Partial cross-sectional view of welding equipment provided for other embodiments of this application;

[0044] Figure 8 Partial cross-sectional view of welding equipment provided for some embodiments of this application;

[0045] Figure 9 This is a schematic diagram of an image taken by a second photographic element displayed on a background plate in a welding apparatus provided in some embodiments of this application.

[0046] The reference numerals in the accompanying drawings for the specific embodiments are as follows:

[0047] 100. Cleaning mechanism; 1. Cleaning component; 11. Main body; 110. First main body section; 120. Second main body section; 130. Third main body section; 111. Third end; 112. Fourth end; 101. Positioning section; 12. Scraper; 121. First scraper section; 122. Second scraper section; 123. Third scraper section; 2. Drive assembly; 31. First imaging component; 4. Suction assembly; 41. Suction component; 42. Pipe; 5. Detection assembly; 51. Second imaging component; 52. Background plate;

[0048] 200. Welding nozzle; 201. Welding cavity; 2011. First cavity; 2012. Second cavity; 2013. Third cavity; 21. First end; 211. First opening; 22. Second end; 221. Second opening; 23. Cavity wall; 202. Slag discharge hole;

[0049] 300. Welding slag;

[0050] A. Axial; B. Radial; T1. First position. Detailed Implementation

[0051] To make the objectives, technical solutions, and advantages of the embodiments of this application clearer, the technical solutions of the embodiments of this application will be clearly described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0052] Unless otherwise defined, all technical and scientific terms used in this application have the same meaning as commonly understood by one of ordinary skill in the art to which this application pertains; the terminology used in the description of this application is for the purpose of describing particular embodiments only and is not intended to limit the application; the terms "comprising" and "having," and any variations thereof, in the description, claims, and accompanying drawings of this application are intended to cover non-exclusive inclusion. The terms "first," "second," etc., in the description, claims, or accompanying drawings of this application are used to distinguish different objects, not to describe a specific order or hierarchy.

[0053] In this application, the reference to "embodiment" means that a particular feature, structure, or characteristic described in connection with an embodiment may be included in at least one embodiment of this application. The appearance of this phrase in various places in the specification does not necessarily refer to the same embodiment, nor is it a separate or alternative embodiment that is mutually exclusive with other embodiments.

[0054] In the description of this application, it should be noted that, unless otherwise expressly specified and limited, the terms "installation," "connection," "linking," and "attachment" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal communication between two components. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.

[0055] In this application, the term "and / or" is merely a description of the relationship between related objects, indicating that three relationships can exist. For example, A and / or B can represent: A existing alone, A and B existing simultaneously, or B existing alone. Additionally, in this application, the character " / " generally indicates that the preceding and following related objects have an "or" relationship.

[0056] In the embodiments of this application, the same reference numerals denote the same components, and for the sake of brevity, detailed descriptions of the same components are omitted in different embodiments. It should be understood that the thickness, length, width, and other dimensions of various components in the embodiments of this application shown in the accompanying drawings, as well as the overall thickness, length, width, and other dimensions of the integrated device, are merely illustrative and should not constitute any limitation on this application.

[0057] In this application, "multiple" means two or more (including two).

[0058] Currently, judging from market trends, battery applications are becoming increasingly widespread. Batteries are not only used in energy storage systems such as hydropower, thermal power, wind power, and solar power plants, but also extensively in electric vehicles such as electric bicycles, electric motorcycles, and electric cars, as well as in aerospace and other fields. With the continuous expansion of battery applications, market demand is also constantly increasing.

[0059] In this embodiment of the application, the battery cell can be a secondary battery, which refers to a battery cell that can be recharged to activate the active materials and continue to be used after the battery cell has been discharged.

[0060] The battery cell can be a lithium-ion battery, sodium-ion battery, sodium-lithium-ion battery, lithium metal battery, sodium metal battery, lithium-sulfur battery, magnesium-ion battery, nickel-metal hydride battery, nickel-cadmium battery, lead-acid battery, etc., and the embodiments of this application are not limited to this.

[0061] During the welding process of connecting individual battery cells into modules or batteries, welding nozzles are used to press the battery cells and other components to be connected, such as foil, to weld them together. During the welding process, the welding slag produced by welding will cause a lot of welding slag to stick to the cavity wall of the welding nozzle. If the welding slag stuck to the cavity wall of the welding nozzle accumulates to a certain extent, it will pose a risk of blocking light and causing poor welding of the product. Therefore, the welding nozzle needs to be cleaned regularly.

[0062] Based on the above-mentioned technical problems, this application provides a welding device, including a welding nozzle and a cleaning mechanism. The welding nozzle has a welding cavity, and the cleaning mechanism is used to clean the welding slag adhering to the cavity wall of the welding cavity. The cleaning mechanism includes a cleaning component and a driving component. The cleaning component includes a main body and a scraper. The scraper is connected to the main body and protrudes from the outer peripheral surface of the main body. The driving component is connected to the cleaning component and is configured to drive the cleaning component to move so that the cleaning component enters or leaves the welding cavity. The driving component is also configured to drive the scraper to rotate. The driving component can drive the cleaning component to move to a first position. In the first position, at least a portion of the cleaning component is located in the welding cavity. Along the radial direction of the welding nozzle, a first gap exists between the end surface of the scraper away from the outer peripheral surface of the main body and the cavity wall of the welding cavity. In the first position, the driving component is configured to drive the scraper to rotate so that the scraper contacts the welding slag to separate the welding slag from the cavity wall of the welding cavity. The value of the first gap is L, 0.5mm≤L≤1mm.

[0063] The scraper included in the cleaning assembly can contact the welding slag adhering to the cavity wall of the welding nozzle, thereby separating the welding slag from the cavity wall and cleaning the welding nozzle. Since the scraper has a certain strength, it is beneficial to improve the cleaning effect of the cleaning mechanism on the welding nozzle, thus improving the cleanliness of the welding nozzle and consequently improving the welding quality of the welding equipment. Furthermore, the scraper is spaced apart from the cavity wall, and the first gap between the scraper and the cavity wall is set between 0.5mm and 1mm. This allows the scraper to clean the welding slag smoothly while reducing the risk of the scraper coming into contact with the cavity wall, thereby increasing the service life of the scraper and thus the service life of the cleaning mechanism. In addition, the drive assembly can drive the movement of the cleaning assembly, which is also conducive to realizing the automated design of the cleaning mechanism.

[0064] The welding equipment described in this application is applicable to the welding process of battery cells. Of course, it can also be applied to the welding process of other products. For ease of description, the welding product of the welding equipment will be described as a battery cell.

[0065] Please refer to the following: Figures 1 to 5According to an embodiment of this application, a welding device is provided, including a welding nozzle 200 and a cleaning mechanism 100. The welding nozzle 200 has a welding cavity 201. The cleaning mechanism 100 is used to clean the welding slag 300 adhering to the cavity wall 23 of the welding cavity 201. The cleaning mechanism 100 includes a cleaning component 1 and a driving component 2. The cleaning component 1 includes a body 11 and a scraper 12. The scraper 12 is connected to the body 11 and protrudes from the outer peripheral surface of the body 11. The driving component 2 is connected to the cleaning component 1 and is configured to drive the cleaning component 1 to move so that the cleaning component 1 enters or leaves the welding cavity 201. The driving component 2 is also configured to drive the scraper 12 to rotate. The drive assembly 2 is capable of driving the cleaning assembly 1 to move to a first position T1. In the first position T1, at least a portion of the cleaning assembly 1 is located in the welding cavity 201. Along the radial direction B of the welding nozzle 200, there is a first gap between the end surface of the scraper 12 away from the outer peripheral surface of the body 11 and the cavity wall 23. In the first position T1, the drive assembly 2 is configured to drive the scraper 12 to rotate, so that the scraper 12 contacts the welding slag 300 to separate the welding slag 300 from the cavity wall 23 of the welding cavity 201. The value of the first gap is L, 0.5mm≤L≤1mm.

[0066] The welding equipment includes a welding nozzle 200 and a cleaning mechanism 100. The welding nozzle 200 is a structure used to clamp the battery cells and the battery cells during the welding process of connecting battery cells into groups or battery packs, so that the welding tools in the welding equipment can complete the welding of the battery cells through the welding nozzle 200. The welding nozzle 200 can be a copper nozzle or a component with the above structure made of the same material. The cleaning mechanism 100 is used to clean the welding nozzle 200 during the welding interval of the welding equipment. That is to say, the welding equipment can have a welding state and a cleaning state. In the welding state, the welding nozzle 200 is working and used to weld the battery cells, while the cleaning mechanism 100 is not working. In the cleaning state, the welding nozzle 200 is not working, while the cleaning mechanism 100 is working to clean the welding nozzle 200.

[0067] The welding nozzle 200 has a welding cavity 201. The welding equipment may also include a welding tool. The welding tool welds the battery cell through the welding cavity 201. After the welding nozzle 200 has been used for a period of time, the welding slag 300 generated during the welding process will splash into the welding cavity 201 and also adhere to the cavity wall 23 of the welding cavity 201. The welding nozzle 200 has an inner wall facing the welding cavity 201 and an outer wall away from the welding cavity 201. The cavity wall 23 of the welding cavity 201 refers to the inner wall facing the welding cavity 201. It should be noted that when too much welding slag 300 adheres to the cavity wall 23, it will obstruct the welding tool and reduce the welding quality. Moreover, the welding slag 300 adhered to the cavity wall 23 is not easy to fall off. Therefore, this embodiment of the application sets up a cleaning mechanism 100 to clean the welding slag 300 adhered to the cavity wall 23 of the welding nozzle 200, so as to maintain the cleanliness of the welding nozzle 200 and thereby improve the product quality after welding by the welding equipment.

[0068] The cleaning mechanism 100 includes a cleaning component 1 and a driving component 2. The cleaning component 1 is used to clean the welding slag 300 adhering to the cavity wall 23 of the welding nozzle 200. The driving component 2 is used to drive the cleaning component 1 to move, thereby adjusting the position of the cleaning component 1 so that the cleaning component 1 can enter or leave the welding cavity 201. That is, when the welding equipment is in the welding state, the cleaning component 1 is located outside the welding cavity 201. When the welding equipment is in the cleaning state, the cleaning component 1 can enter the welding cavity 201 under the drive of the driving component 2. After cleaning, the driving component 2 can also move the cleaning component 1 out of the welding cavity 201 so that the welding nozzle 200 can continue to perform subsequent welding operations and switch the welding equipment to the welding state.

[0069] It should be noted that when the welding nozzle 200 does not require cleaning, the cleaning component 1 is located outside the welding cavity 201 of the welding nozzle 200. However, when the welding nozzle 200 requires cleaning, the driving component 2 can drive at least a portion of the cleaning component 1 to enter the welding cavity 201 through the first opening 211, so that the cleaning component 1 can clean the welding slag 300 adhering to the cavity wall 23 of the welding nozzle 200. Optionally, in the first position T1, the cleaning component 1 can be entirely located inside the welding cavity 201; alternatively, only a portion of the cleaning component 1 can be located inside the welding cavity 201.

[0070] The cleaning assembly 1 includes a main body 11 and a scraper 12. The main body 11 is used to fix the scraper 12, and the scraper 12 is used to contact the welding slag 300 to separate the welding slag 300 from the cavity wall 23. The scraper 12 refers to a plate-shaped structure with a certain strength, which can be a plate-shaped structure of uniform thickness or a plate-shaped structure of different thicknesses. The scraper 12 is connected to the main body 11. The scraper 12 can be connected to the outer peripheral surface of the main body 11 or to other positions of the main body 11. "The scraper 12 protrudes from the outer peripheral surface of the main body 11" can be understood as follows: when the cleaning assembly 1 enters the welding cavity 201, the scraper 12 is closer to the cavity wall 23 of the welding nozzle 200 than the main body 11, so that the scraper 12 can contact the welding slag 300 adhering to the cavity wall 23. While the scraper 12 can contact the welding nozzle 200, it also has a first gap with the cavity wall 23, so that it will not contact the cavity wall 23 while cleaning the welding slag 300.

[0071] "The scraper 12 contacts the welding slag 300 to separate the welding slag 300 from the cavity wall 23 of the welding cavity 201" means that the scraper 12 will come into contact with the welding slag 300 adhering to the cavity wall 23 during rotation. The scraper 12 can scrape off the welding slag 300 to separate it from the cavity wall 23. Alternatively, the scraper 12 can be set as a magnetic structure, which can attract the welding slag 300 when the scraper 12 comes into contact with it, so as to separate the welding slag 300 from the cavity wall 23. Alternatively, the scraper 12 can also be provided with a negative pressure channel, which can be sucked into the negative pressure channel when the scraper 12 comes into contact with the welding slag 300, so as to separate the welding slag 300 from the cavity wall 23.

[0072] "At the first position T1, along the radial direction B of the welding nozzle 200, there is a first gap between the end surface of the scraper 12 away from the outer peripheral surface of the main body 11 and the cavity wall 23 of the welding cavity 201" means that when the cleaning assembly 1 is in the first position T1, the scraper 12 and the cavity wall 23 are spaced apart in the radial direction B to reduce the possibility of them coming into contact and wearing each other. The value of the first gap is L, where 0.5mm ≤ L ≤ 1mm, and any value between 0.5mm and 1mm can be considered as the value of the first gap.

[0073] The first position T1 refers to the position where the scraper 12 can rotate to clean the welding nozzle 200. When the cleaning component 1 has not reached the first position T1, the drive component 2 is used to drive the cleaning component 1 to move. When the cleaning component 1 reaches the first position T1, the drive component 2 is used to drive the scraper 12 to rotate. Along the radial direction B, there is a first gap between the outer peripheral surface of the scraper 12 away from the main body 11 and the cavity wall 23.

[0074] "The value of the first gap is L" refers to the value of the first gap between the end surface of the scraper 12, which is radially away from the outer peripheral surface of the body 11, and the cavity wall 23, which is radially away from the body 11. Figure 5As shown, there are multiple first gaps along axis A, and the value of all first gaps is L. L is between 0.5mm and 1mm. All the values ​​of the first gaps can be the same or different, as long as they are between 0.5mm and 1mm.

[0075] As an example, the value of L can be, but is not limited to, 0.5mm, 0.6mm, 0.7mm, 0.8mm, 0.9mm, 1mm, etc.

[0076] If the value of L is designed to be too small, i.e. less than 0.5 mm, during the process of the cleaning component 1 entering the welding cavity 201, the possibility of the scraper 12 coming into contact with the cavity wall 23 is easily increased, which will cause wear on the scraper 12 and the cavity wall 23. If the value of L is designed to be too large, i.e. greater than 1 mm, the scraper 12 may not be able to contact the relatively small welding slag 300 adhering to the cavity wall 23 of the welding nozzle 200 during the cleaning process, thereby weakening the cleaning effect of the cleaning mechanism 100.

[0077] Therefore, by setting the value of L between 0.5mm and 1mm, including both 0.5mm and 1mm endpoints, the scraper 12 can fully contact the weld slag 300 adhering to the cavity wall 23 during its rotation at the first position T1, while also reducing the risk of contact between the scraper 12 and the cavity wall 23. This not only improves the cleaning effect of the cleaning mechanism 100 on the welding nozzle 200, thereby improving the welding quality of the welding equipment, but also extends the service life of the cleaning mechanism 100 and the welding nozzle 200, thus improving the service life of the welding equipment. Furthermore, by setting the value in the above manner, the reliability of the scraper 12 in successfully scraping off the weld slag 300 adhering to the cavity wall 23 during rotation can also be improved.

[0078] There are two methods for cleaning welding slag inside welding nozzles in related technologies. One is manual cleaning, which requires stopping production after the equipment has been used for a period of time. Personnel enter the equipment and manually clean the welding slag on each welding nozzle. However, this cleaning method requires the equipment to be shut down, which will greatly affect production efficiency and the cleaning effect cannot be guaranteed. The other method is to use a brush for cleaning. The high-speed rotating brush driven by the motor removes the welding slag adhering to the inside of the welding nozzle. However, since the brush itself is made of flexible material, it cannot remove welding slag that is too tightly adhered to the cavity wall of the welding nozzle. The cleaning effect is poor and there is also a risk of the brush shedding bristles.

[0079] Unlike other applications, this application uses a drive component 2 to drive the cleaning component 1, thus achieving automated cleaning of the cleaning mechanism 100. During the cleaning process of the cleaning mechanism 100 on the welding nozzle 200, the welding equipment does not need to stop, reducing the impact on production efficiency. Furthermore, the automated cleaning method improves the cleaning effect on the welding nozzle 200, thereby improving the welding quality of the welding equipment. Additionally, the use of a scraper 12 with a certain strength to automatically clean the welding slag 300 adhering to the cavity wall 23 of the welding nozzle 200 effectively removes the welding slag 300 that is tightly adhered to the cavity wall 23, improving cleaning efficiency and consequently improving the production quality of the welding equipment. Moreover, the scraper 12 does not shed fibers, effectively reducing the contamination of the welding nozzle 200 caused by the cleaning mechanism 100 itself. The scraper 12 also does not deform during operation, further enhancing the cleaning effect.

[0080] Furthermore, by setting the scraper 12 and the cavity wall 23 at intervals when the cleaning component 1 is in the first position T1, and setting the first gap between the scraper 12 and the cavity wall 23 to be between 0.5mm and 1mm, the scraper 12 can smoothly clean the welding slag 300 while reducing the risk of the scraper 12 contacting the cavity wall 23, thereby reducing the possibility of damage to the scraper 12 or the welding nozzle 200. This is beneficial to improving the service life and quality of the scraper 12 and the welding nozzle 200, and thus to improving the service life and quality of the cleaning mechanism 100 and the welding equipment.

[0081] To ensure that the scraper 12 can accurately scrape off the welding slag 300, the scraper 12 can be made of a high-strength and wear-resistant alloy material, so that it can not only scrape off the welding slag 300 quickly, but also extend the service life of the scraper 12, thereby improving the service life of the cleaning mechanism 100.

[0082] Optionally, the surface of the scraper 12 facing away from the body 11 may have a certain curvature to match the shape of the cavity wall 23 of the welding nozzle 200.

[0083] The drive assembly 2 may include a motor, which not only controls the movement of the cleaning assembly 1 and the rotation of the scraper 12, but also precisely adjusts the rotation speed of the scraper 12 according to the adhesion of the welding slag 300 and the size of the welding nozzle 200. When the welding slag 300 is firmly attached, the drive assembly 2 will appropriately reduce the rotation speed and increase the force of the scraper 12 on the welding slag 300 to ensure that the welding slag 300 can be effectively scraped off. When the welding slag 300 is loosely attached, the drive assembly 2 will increase the rotation speed to improve cleaning efficiency.

[0084] Optionally, the main body 11 and the scraper 12 can be integrally formed to improve the manufacturing efficiency of the cleaning component 1 and also to improve the structural strength of the cleaning component 1.

[0085] Alternatively, the main body 11 and the scraper 12 can be provided separately. The scraper 12 can be assembled with the main body 11 by welding, bonding or other means. This arrangement helps to improve the structural flexibility of the cleaning component 1.

[0086] Optionally, the number of scrapers 12 can be set to one, two, or even more.

[0087] Optionally, the drive component 2 can be connected to the main body 11 of the cleaning component 1, and the scraper 12 is fixedly connected to the main body 11, so that the drive component 2 can drive the main body 11 to move, thereby driving the scraper 12 to move. Alternatively, the drive component 2 can also be connected to the scraper 12 of the cleaning component 1, and the scraper 12 is movably connected to the main body 11, so that the drive component 2 can drive the scraper 12 to move relative to the main body 11.

[0088] The welding equipment can be laser welding equipment. Specifically, the welding nozzle 200 can be used in the laser welding process of battery cells. The welding nozzle 200 can have a welding cavity 201 and a first end 21 and a second end 22 facing opposite directions along its own axial direction A. The first end 21 has a first opening 211 communicating with the welding cavity 201, and the second end 22 has a second opening 221 communicating with the welding cavity 201. The area of ​​the first opening 211 is larger than the area of ​​the second opening 221. In the welding process of the battery cell, the battery cell is located at the second end 22 of the welding nozzle 200 along the axial direction A. On the side away from the first end 21, the welding tool is located on the side of the first end 21 of the welding nozzle 200 away from the second end 22 along the axial direction A. The beam emitted by the welding tool can enter the welding chamber 201 through the first opening 211 and exit through the second opening 221. By setting the opening area of ​​the first opening 211 to be larger than the opening area of ​​the second opening 221, the beam can be focused to a very small point to achieve high energy density and complete the laser welding of the battery cell. The battery cell can be against the second end 22 or spaced apart from the second end 22 along the axial direction A.

[0089] The axial direction A of the welding nozzle 200 can be understood as the direction of the line connecting the midpoint of the first opening 211 and the midpoint of the second opening 221, or as the direction of the rotation center axis of the welding nozzle 200. The radial direction B of the welding nozzle 200 can be understood as the direction perpendicular to the axial direction A, that is, the radius or diameter direction of the end face or cross section of the welding nozzle 200.

[0090] When the welding nozzle 200 requires cleaning, the drive assembly 2 can drive the cleaning assembly 1 to move, so that the drive assembly 2 enters the welding cavity 201 through the first opening 211. When the cleaning assembly 1 reaches the first position T1, the drive assembly 2 drives the scraper 12 to rotate, so that the scraper 12 contacts the welding slag 300 to separate the welding slag 300 from the cavity wall 23. The drive assembly 2 can drive the cleaning assembly 1 to move along the axial direction A and / or the radial direction B, so that the cleaning assembly 1 moves to the first position T1.

[0091] like Figure 4 As shown, in some embodiments, at the first position T1, the body 11 and the welding nozzle 200 are coaxially arranged.

[0092] "The main body 11 and the welding nozzle 200 are coaxially arranged" means that when the cleaning component 1 moves to the first position T1 under the drive of the drive component 2, the central axis of the main body 11 coincides with the central axis of the welding nozzle 200. By setting it in this way, during the rotation of the scraper 12 in the first position T1, the scraper 12 is away from the end surface of the main body 11 along the radial direction B, and can always have a first gap with the cavity wall 23 of the welding nozzle 200 along the radial direction B, so as to further reduce the possibility of the scraper 12 contacting the cavity wall 23 during the rotation.

[0093] Furthermore, in some embodiments, 0.5mm ≤ L ≤ 0.75mm.

[0094] By further setting the value of L between 0.5mm and 0.75mm, including the two endpoint values ​​of 0.5mm and 0.75mm, it is beneficial to further improve the cleaning effect and service life of the cleaning mechanism 100, thereby further improving the service life of the welding equipment.

[0095] Please see Figure 1 and Figure 3 In some embodiments, along the axial direction A of the welding nozzle 200, the welding cavity 201 includes a first cavity 2011 and a second cavity 2012 connected in communication. The scraper 12 has a first scraper portion 121 and a second scraper portion 122 connected in communication. At a first position T1, at least a portion of the first scraper portion 121 is located in the first cavity 2011, and at least a portion of the second scraper portion 122 is located in the second cavity 2012. Along the radial direction B, a first gap is formed between the end surface of the first scraper portion 121 away from the outer peripheral surface of the body 11 and the cavity wall of the first cavity 2011, and a first gap is formed between the end surface of the second scraper portion 122 away from the outer peripheral surface of the body 11 and the cavity wall of the second cavity 2012.

[0096] like Figure 3 and Figure 5 As shown, the cavity wall of the first cavity 2011 and the cavity wall of the second cavity 2012 both refer to the cavity wall 23 of the welding cavity 201.

[0097] By configuring the cleaning mechanism 100 in the first position T1, the first gap between the end surface of the first scraper portion 121, which is radially away from the outer peripheral surface of the main body 11, and the cavity wall of the first cavity 2011 can be L, and the first gap between the end surface of the second scraper portion 122, which is radially away from the outer peripheral surface of the main body 11, and the cavity wall of the second cavity 2012 can also be L. In other words, in the first position T1, the values ​​of the multiple first gaps between the end surface of the scraper 12, which is radially away from the outer peripheral surface of the main body 11, and the cavity wall 23 are all equal at every position, ensuring that during the rotation of the scraper 12, the first scraper portion 121... The trajectory traced by the end of the scraper 122 away from the outer peripheral surface of the main body 11 is the same as the shape enclosed by the cavity wall of the first cavity 2011 of the welding nozzle 200, and the trajectory traced by the end of the scraper 122 away from the outer peripheral surface of the main body 11 is the same as the shape enclosed by the cavity wall of the second cavity 2012 of the welding nozzle 200. This improves the accuracy of the scraper 12 in scraping off the welding slag 300, and also makes the structure of the cleaning component 1 match that of the welding nozzle 200, so as to better clean the welding slag 300 in the welding nozzle 200. It also further reduces the possibility of the scraper 12 contacting the cavity wall 23, thereby helping to further improve the welding quality and service life of the welding equipment.

[0098] It should be noted that in the welding process of the battery cell, due to the need for changes in the laser optical path, the cross-section of the welding nozzle 200 is not a cylindrical, conical, or frustum structure, but rather presents an irregular structure, such as a combination of any two or more of the above three structures. Along the axial direction A, the welding nozzle 200 can be divided into three connected parts, namely a first part with a first cavity 2011 and a second part with a second cavity 2012. The shape of the first cavity 2011 can be a cylindrical structure, and the shape of the second cavity 2012 can be a frustum or a conical structure. Therefore, by setting it in the above manner, the shape of the cleaning component 1 can match the shape of the welding nozzle 200.

[0099] like Figure 3 and Figure 4 As shown, along axis A, the welding nozzle 200 can be divided into three connected parts: a first part with a first cavity 2011, a second part with a second cavity 2012, and a third part with a third cavity 2013. The first cavity 2011 can be cylindrical, the second cavity 2012 can be cylindrical, and the third cavity 2013 can be cylindrical. Therefore, by setting it in the above manner, the shape of the cleaning component 1 can match the shape of the welding nozzle 200.

[0100] Please see Figure 1 and Figure 3In some embodiments, the welding cavity 201 further includes a third cavity 2013, and the scraper 12 also has a third scraper portion 123. Along the axial direction A of the welding nozzle 200, the third cavity 2013 is connected to the side of the second cavity 2012 away from the first cavity 2011, and the third scraper portion 123 is connected to the side of the second scraper portion 122 away from the first scraper portion 121. At a first position T1, at least a portion of the third scraper portion 123 is located in the third cavity 2013. Along the radial direction B, there is a first gap between the end surface of the third scraper portion 123 away from the outer peripheral surface of the body 11 and the cavity wall of the third cavity 2013.

[0101] like Figure 3 and Figure 5 As shown, the cavity wall of the first cavity 2011 and the cavity wall of the second cavity 2012 both refer to the cavity wall 23 of the welding cavity 201.

[0102] By configuring the cleaning mechanism 100 in the first position T1, the first gap between the end surface of the first scraper portion 121, which is radially away from the outer peripheral surface of the main body 11, and the cavity wall of the first cavity 2011 can be L; the first gap between the end surface of the second scraper portion 122, which is radially away from the outer peripheral surface of the main body 11, and the cavity wall of the second cavity 2012 can be L; and the first gap between the end surface of the third scraper portion 123, which is radially away from the outer peripheral surface of the main body 11, and the cavity wall of the third cavity 2013 can be L. In other words, in the first position T1, the values ​​of the multiple first gaps between the end surface of the scraper 12, which is radially away from the outer peripheral surface of the main body 11, and the cavity wall 23 are all equal at every position, ensuring that during the rotation of the scraper 12, the first scraper portion 121, which is radially away from the outer peripheral surface of the main body 11, has a first gap of L. The trajectory traced by the end of the scraper portion 122 away from the outer peripheral surface of the main body 11 is the same as the shape enclosed by the cavity wall of the first cavity 2011 of the welding nozzle 200. The trajectory traced by the end of the scraper portion 122 away from the outer peripheral surface of the main body 11 is the same as the shape enclosed by the cavity wall of the second cavity 2012 of the welding nozzle 200. The trajectory traced by the end of the scraper portion 123 away from the outer peripheral surface of the main body 11 is the same as the shape enclosed by the cavity wall of the third cavity 2013 of the welding nozzle 200. This improves the accuracy of the scraper 12 in scraping off the welding slag 300. It also makes the structure of the cleaning component 1 match that of the welding nozzle 200, so as to better clean the welding slag 300 in the welding nozzle 200. It also further reduces the possibility of the scraper 12 contacting the cavity wall 23, thereby helping to further improve the welding quality and service life of the welding equipment.

[0103] like Figure 3 and Figure 4As shown, along axis A, the welding nozzle 200 can be divided into three connected parts: a first part with a first cavity 2011, a second part with a second cavity 2012, and a third part with a third cavity 2013. The first cavity 2011 can be cylindrical, the second cavity 2012 can be frustum, and the third cavity 2013 can be cylindrical. Therefore, by setting it in the above manner, it is easy to improve the welding quality of welding through the welding nozzle 200, and it can also make the shape of the cleaning component 1 match the shape of the welding nozzle 200.

[0104] Optionally, the first scraper portion 121 may be entirely located in the first cavity 2011, or only a portion of it may be located in the first cavity 2011. Optionally, the second scraper portion 122 may be entirely located in the second cavity 2012, or only a portion of it may be located in the first cavity 2011. Optionally, the third scraper portion 123 may be entirely located in the third cavity 2013, or only a portion of it may be located in the third cavity 2013.

[0105] Please see Figures 1 to 4 In some embodiments, the main body 11 has a first main body portion 110, a second main body portion 120, and a third main body portion 130 connected together. A first scraper portion 121 is connected to the first main body portion 110, a second scraper portion 122 is connected to the second main body portion 120, and a third scraper portion 123 is connected to the third main body portion 130. The shape of the first main body portion 110 is the same as the shape of the first cavity 2011, the shape of the second main body portion 120 is the same as the shape of the second cavity 2012, and the shape of the third main body portion 130 is the same as the shape of the third cavity 2013.

[0106] By setting it in the above manner, the welding cavity 201 of the welding nozzle 200 can be designed in a similar shape to the main body 11, which facilitates the processing and manufacturing of the main body 11 and the scraper 12, and also helps to further reduce the possibility of the scraper 12 coming into contact with the cavity wall 23 of the welding cavity 201.

[0107] Furthermore, by setting it in the above manner, the dimensions of the first scraper portion 121 in the radial direction B, the dimensions of the second scraper portion 122 in the radial direction B, and the dimensions of the third scraper portion 123 in the radial direction B are all equal, which facilitates the processing and manufacturing of the cleaning component 1.

[0108] Optionally, in the first position T1, at least a portion of the first main body 110 is located in the first cavity 2011, the second main body 120 is located in the second cavity 2012, and at least a portion of the third main body 130 is located in the third cavity 2013.

[0109] In some embodiments, there are multiple scrapers 12, which are distributed at intervals along the circumference of the body 11.

[0110] By setting multiple scrapers 12, the probability of the scraper 12 coming into contact with the welding slag 300 adhering to the cavity wall 23 of the welding nozzle 200 can be increased, thereby improving the efficiency and reliability of the scraper 12 in scraping off the welding slag 300. This is beneficial to improving the cleaning efficiency and cleaning effect of the cleaning mechanism 100, and in turn, to improving the production efficiency and production quality of the welding equipment.

[0111] Multiple scrapers 12 are distributed at intervals along the circumference of the main body 11. This distribution method enables the scrapers 12 to achieve a consistent cleaning effect on various areas of the cavity wall 23 of the welding nozzle 200 during the cleaning process, thereby reducing the risk of incomplete cleaning in certain areas. In addition, this distribution method is convenient for processing and manufacturing, and also facilitates the maintenance of the scrapers 12.

[0112] Optionally, such as Figure 1 and Figure 2 As shown, the scraper 12 can extend along the axial direction A, and multiple scrapers 12 can be distributed at equal intervals along the circumference of the main body 11. Of course, they can also be distributed at intervals according to certain rules.

[0113] Optionally, multiple scrapers 12 can also be spirally distributed along the axis of the main body 11. This distribution method enables the scrapers 12 to form a continuous and comprehensive cleaning trajectory during the cleaning process, cleaning up the welding slag 300 adhering to different positions on the cavity wall 23, and further improving the comprehensiveness and effectiveness of the cleaning mechanism 100.

[0114] The welding equipment provided in some embodiments of this application includes a cleaning mechanism 100 in which the number and arrangement of scrapers 12 can be set to any of the above structures, which is beneficial to improving the flexibility of manufacturing the cleaning component 1, thereby improving the diversity of the cleaning mechanism 100.

[0115] Please see Figures 1 to 4 In some embodiments, the drive component 2 is connected to the body 11, and the scraper 12 is fixedly connected to the body 11.

[0116] By connecting the drive assembly 2 to the main body 11, the connection and assembly between the drive assembly 2 and the cleaning assembly 1 are facilitated. This also reduces the impact of assembly on the scraper 12, thereby improving the quality and service life of the scraper 12, thus improving the cleaning effect and service life of the cleaning mechanism 100. Furthermore, the scraper 12 and the main body 11 are fixedly connected, which reduces the risk of relative displacement between them, thereby improving the accuracy and reliability of cleaning the welding slag 300.

[0117] Optionally, the drive component 2 is connected to the first main body 110.

[0118] The welding equipment provided in some embodiments of this application includes a cleaning mechanism 100 in which a drive component 2 is used to control the movement of the main body 11, thereby driving the scraper 12 to move accordingly. This facilitates the assembly of the drive component 2 and the cleaning component 1, and also helps to reduce the impact of assembly on the scraper 12.

[0119] Please see Figures 3 to 5 In some embodiments, the welding nozzle 200 also has a first end 21 and a second end 22 facing opposite directions along its own axial direction A. The first end 21 is provided with a first opening 211 communicating with the welding cavity 201, and the second end 22 is provided with a second opening 221 communicating with the welding cavity 201. The area of ​​the first opening 211 is larger than the area of ​​the second opening 221. The driving component 2 can drive at least part of the cleaning component 1 to enter or exit the welding cavity 201 through the first opening 211.

[0120] When the welding equipment is in the cleaning state, that is, when the welding nozzle 200 needs cleaning, the drive component 2 can drive the cleaning component 1 to enter the welding chamber 201 through the first opening 211. Since the battery cell is located on the side of the second end 22 with a smaller opening area when the welding equipment is in the welding state, the above arrangement is reasonable and facilitates the cleaning component 1 to enter the welding chamber 201 of the welding nozzle 200.

[0121] Please see Figure 4 and Figure 5 In some embodiments, at the first position T1, along the axial direction A, the end of the scraper 12 away from the first opening 211 is located on the side of the second opening 221 away from the welding cavity 201.

[0122] That is, along the axial direction A, the end of the scraper 12 away from the first opening 211 extends out of the welding cavity 201 through the second opening 221. Alternatively, it can be understood that the end of the scraper 12 away from the first opening 211 along the axial direction A protrudes out of the second end 22 in the direction from the first end 21 to the second end 22.

[0123] It should be noted that during the welding process of the battery cell, since the second end 22 of the welding nozzle 200 is closer to the battery cell than the first end 21, the cleanliness of the cavity wall 23 near the second end 22 is particularly important. Furthermore, the welding slag produced during welding is very easy to adhere to the cavity wall 23 of the welding nozzle 200 near the second end 22. Therefore, by setting it in the above manner, the scraper 12 can fully contact the welding slag 300 on the cavity wall 23 of the welding nozzle 200 near the second end 22, thereby improving the cleaning effect of the cleaning mechanism 100 on the cavity wall 23 of the welding nozzle 200 near the second end 22, improving the cleanliness of the welding nozzle 200, and providing good conditions for subsequent welding and other processes.

[0124] In some embodiments, at the first position T1, along the axial direction A, one end of the scraper 12 away from the first opening 211 is located on the side of the second opening 221 away from the welding cavity 201, and one end of the body 11 away from the first opening 211 is located in the welding cavity 201.

[0125] In other embodiments, at the first position T1, along the axial direction A, the end of the scraper 12 away from the first opening 211 is located on the side of the second opening 221 away from the welding cavity 201, and the end of the body 11 away from the first opening 211 is located on the side of the second opening 221 away from the welding cavity 201.

[0126] In other embodiments, at the first position T1, along the axial direction A, the end surface of the scraper 12 facing away from the first opening 211 is located in the same extending plane as the end surface of the body 11 facing away from the first opening 211.

[0127] Please see Figures 3 to 6 In some embodiments, the cleaning mechanism 100 further includes a positioning component. The main body 11 is provided with a positioning part 101. The positioning component is configured to obtain a first coordinate of the center of the positioning part 101 and a second coordinate of the center of the second end 22. The driving component 2 is further configured to drive the cleaning component 1 to move to a first position T1 according to the first coordinate and the second coordinate.

[0128] The positioning component is used to accurately obtain the first coordinate of the center of the positioning part 101 and the second coordinate of the center of the second end 22, providing the driving component 2 with the position information of the cleaning component 1. The driving component 2 can accurately control the cleaning component 1 to move to the first position T1 based on this position information, which helps to improve the accuracy and efficiency of positioning the cleaning component 1.

[0129] Optionally, the positioning part 101 can be located at any end of the main body 11 along the axial direction A, or it can be located at other positions on the main body 11.

[0130] Optionally, the main body 11 has a third end 111 and a fourth end 112 facing opposite directions along the axial direction A. The fourth end 112 is provided with a positioning part 101. In the first position T1, the fourth end 112 is closer to the second end 22 relative to the fourth end 112.

[0131] The main body 11 has a third end 111 and a fourth end 112. When the welding nozzle 200 requires cleaning, the fourth end 112 enters the welding cavity 201 through the first opening 211 before the third end 111. Optionally, the drive assembly 2 is connected to the third end 111 of the main body 11.

[0132] Furthermore, the positioning part 101 can be located in the middle of the fourth end 112, or it can be located at the edge of the fourth end 112.

[0133] Optionally, a positioning part 101 is provided at the center of the fourth end 112.

[0134] Optionally, the first coordinate may include the X-axis and Y-axis coordinates in the horizontal plane, or the polar angle and polar radius in the polar coordinate system in the horizontal plane. For example, such as... Figure 6 As shown, Figure 6 This can be understood as an image of the cleaning component 1 and the welding nozzle 200 taken by the second end 22 during the process of the cleaning component 1 entering the welding chamber 201. The first coordinate includes the X-axis coordinate value and the Y-axis coordinate value in the horizontal plane. The X-axis coordinate value refers to the coordinate of the center of the positioning part 101 and the center of the second end 22 on the X-axis. The Y-axis coordinate value refers to the coordinate of the center of the positioning part 101 and the center of the second end 22 on the Y-axis. The X-axis, Y-axis and axial direction A are perpendicular to each other. The X-axis can be represented by one of the radial directions B, and the Y-axis can be represented by the other radial direction B.

[0135] The positioning process of the positioning component for the cleaning component 1 is as follows: when the driving component 2 drives the cleaning component 1 to move to the side where the first end 21 of the welding nozzle 200 is away from the second end 22, the positioning component can obtain the first coordinate (X1, Y1) of the center of the positioning part 101 and the second coordinate (X2, Y2) of the center of the second end 22. When X1=X2 and Y1=Y2, the driving component 2 controls the cleaning component 1 to move along the axial direction A, so that the cleaning component 1 enters the welding cavity 201 through the first opening 211. When X1 is not equal to X2 or Y1=Y2, the positioning component moves the cleaning component 1 along the axial direction A. When X1 is not equal to Y2, the drive component 2 controls the cleaning component 1 to move along the X-axis and / or Y-axis until X1=X2 and Y1=Y2. Then, the drive component 2 controls the cleaning component 1 to move along the axial direction A. By setting it in the above manner, the center of the positioning part 101 and the center of the second end 22 can be aligned in the axial direction A, so that the center of the main body 11 and the center of the second end 22 are aligned in the axial direction A. This ensures that the cleaning component 1 will not deviate during the process of entering the welding cavity 201, thereby reducing the possibility of it contacting the welding nozzle 200.

[0136] Optionally, the first coordinate may also include the Z-axis coordinate value along axis A, with the X-axis, Y-axis and Z-axis being perpendicular to each other, and the Z-axis being represented as axis A.

[0137] Please see Figures 4 to 7Specifically, the positioning process of the positioning component for the cleaning component 1 is as follows: when the driving component 2 drives the cleaning component 1 to move to the side where the first end 21 of the welding nozzle 200 is away from the second end 22, the positioning component can obtain the first coordinate (X1, Y1, Z1) of the center of the positioning part 101 and the second coordinate (X2, Y2, Z2) of the center of the second end 22. When X1=X2 and Y1=Y2 and |Z1-Z2|=2mm, it means that the cleaning component 1 is already in the first position. The driving component 2 no longer drives the cleaning component 1 to move, but drives the scraper 12 to rotate. If any of the above three conditions are not met, the driving component 2 will control the cleaning component 1 to move along the X-axis and / or Y-axis and / or Z-axis until the above three conditions are met at the same time. By setting it in the above way, the cleaning component 1 can be moved quickly and accurately to the first position T1 to clean the welding slag 300.

[0138] It should be noted that during the process of driving component 2 to move cleaning component 1 to the first position T1, the positioning component obtains the first coordinate and the second coordinate in real time, and driving component 2 drives cleaning component 1 to move in real time according to the first coordinate and the second coordinate.

[0139] The welding equipment provided in some embodiments of this application, by setting a positioning component, enables the driving component 2 to accurately move the cleaning component 1 to the first position T1, and enables the driving component 2 to drive the scraper 12 located at the first position T1 to rotate to clean the welding slag 300 adhering in the welding nozzle 200. This is beneficial to improving the accuracy of the cleaning mechanism 100 in cleaning the welding slag 300. Moreover, this coordinate positioning-based control method enables the cleaning mechanism 100 to adapt to welding cavities 201 of different shapes and sizes, and has stronger versatility and flexibility.

[0140] Optionally, the positioning component may include a camera to obtain the first coordinates of the center of the positioning unit 101 and the second coordinates of the center of the second end 22 by taking pictures. The positioning component may also include sensors such as radar.

[0141] Optionally, the positioning part 101 can be a protrusion provided at the fourth end 112, with the center of the protrusion as the detection reference; or, the positioning part 101 can be a recess provided at the fourth end 112, with the center of the recess as the detection reference.

[0142] Please continue reading. Figures 4 to 7 In some embodiments, the positioning component includes a first imaging element 31 along axis A. The first imaging element 31 is disposed on the side of the second end 22 opposite to the first end 21. The first imaging element 31 is configured to acquire a position image of the positioning part 101 and a position image of the second end 22.

[0143] The first imaging element 31 is located at the bottom of the second end 22 and is used to take upward images to obtain position images including the positioning part 101 and the second end 22. The positioning component may also include an image processing component. The image processing component calculates and obtains the first coordinate and the second coordinate through the position images including the positioning part 101 and the second end 22, providing a reliable basis for the subsequent drive component 2 to accurately control the movement of the cleaning component 1.

[0144] Optionally, the first imaging element 31 can be a CCD camera or a 3D camera.

[0145] Please see Figure 5 In some embodiments, the positioning part 101 is a groove provided at the fourth end 112.

[0146] The positioning part 101 can be a groove opened inward at the fourth end 112 of the main body 11. This groove has bottom walls and openings spaced apart along the axial direction A. The first coordinate can be based on the center of the bottom wall or the center of the opening.

[0147] The welding equipment provided in some embodiments of this application, by setting the positioning part 101 inside the main body 11, helps to reduce the possibility of interference between the positioning part 101 and the welding nozzle 200, and also reduces the possibility of interference between the positioning part 101 and other components. In addition, it can reduce the weight of the main body 11, thereby reducing the weight and cost of the cleaning mechanism 100. Furthermore, it is easier to process and manufacture.

[0148] Please see Figure 8 and Figure 9 In some embodiments, the cleaning mechanism 100 further includes a detection component 5, which includes a second imaging element 51 and a background plate 52. The cleaning mechanism 100 has a detection state in which, along the axial direction A, the background plate 52 is disposed on the side of the first end 21 away from the second end 22, and the second imaging element 51 is disposed on the side of the second end 22 away from the first end 21. The background plate 52 is configured to display an image captured by the second imaging element 51.

[0149] After the cleaning mechanism 100 completes the cleaning operation on the welding nozzle 200, the drive assembly 2 drives the cleaning assembly 1 to move out of the welding cavity 201. The drive assembly 2 can also drive the background plate 52 to move to the side of the first end 21 away from the second end 22, and drive the second imaging piece 51 to move to the side of the second end 22 away from the first end 21, so as to inspect the cleanliness of the cavity wall 23 of the welding nozzle 200.

[0150] The second imaging element 51 is located below the second end 22, and it can capture images upwards, such as... Figure 9 As shown, Figure 9The image captured by the second camera 51 displayed on the background plate 52 can be represented. If the captured image contains welding slag 300, it means that the cleaning mechanism 100 is not cleaning properly. The drive component 2 needs to drive the cleaning component 1 to move again to clean the welding nozzle 200 until the image captured by the second camera 51 displayed on the background plate 52 is free of welding slag 300.

[0151] The welding equipment provided in some embodiments of this application, by setting the detection component 5, can inspect the cleaning effect of the cleaning mechanism 100, so as to further improve the cleaning effect on the welding nozzle 200, thereby improving the reliability of the cleaning mechanism 100 and the reliability of the welding equipment.

[0152] Optionally, the second camera 51 can be a CCD camera or a 3D camera.

[0153] Optionally, the first photographing component 31 and the second photographing component 51 can be the same component, but they are used in different processes.

[0154] Please see Figure 8 In some embodiments, the cleaning mechanism 100 further includes a suction component 4, and the welding nozzle 200 is provided with a slag discharge hole 202 communicating with the welding cavity 201 on its periphery. The suction component 4 is connected to the slag discharge hole 202.

[0155] The suction component 4 can be used in conjunction with the cleaning component 1. The suction component 4 is used to suck away the welding slag 300 scraped off by the cleaning component 1 through the slag discharge hole 202. The suction component 4 may include a suction element 41 and a pipe. The pipe 42 is connected between the slag discharge hole 202 and the suction element 41. The suction element 41 may be a pump or a motor. It can provide a certain negative pressure to the welding cavity 201 through the pipe 42 so that the welding slag 300 is discharged from the welding cavity 201 through the pipe 42.

[0156] The suction component 41 and the cleaning component 1 can operate simultaneously so that the welding slag 300 scraped off by the cleaning component 1 can be sucked away by the suction component 41 in time. Alternatively, the suction component 41 can also operate separately from the cleaning component 1.

[0157] The welding equipment provided in some embodiments of this application, through the cooperative use of the cleaning component 1 and the suction component 4, enables the suction component 4 to suck away the welding slag 300 scraped off by the cleaning component 1 through the pipe 42, so that the welding slag 300 leaves the welding chamber 201 quickly, which is beneficial to improving the cleaning efficiency of the cleaning mechanism 100 on the welding slag 300.

[0158] According to some embodiments of this application, this application provides a battery cell production line, including the welding equipment provided in any of the above embodiments.

[0159] The above description is only an overview of the technical solution of this application. In order to better understand the technical means of this application and to implement it in accordance with the contents of the specification, and to make the above and other objects, features and advantages of this application more obvious and understandable, the following are specific embodiments of this application.

[0160] Please refer to the following: Figures 1 to 8 This application provides a welding device, including a welding nozzle 200 and a cleaning mechanism 100. The welding nozzle 200 is used for the welding process of battery cells, and the cleaning mechanism 100 is used to clean the welding slag 300 adhering to the cavity wall 23 of the welding nozzle 200. The welding nozzle 200 has a welding cavity 201, and a first end 21 and a second end 22 facing opposite directions along its own axial direction A. The first end 21 is provided with a first opening 211 communicating with the welding cavity 201, and the second end 22 is provided with a second opening 221 communicating with the welding cavity 201. Along the radial direction B of the welding nozzle 200, the welding nozzle 200 has a cavity wall 23 facing the welding cavity 201. The cleaning mechanism 100 includes a cleaning component 1, a driving component 2, a positioning component, a suction component 4, and a detection component 5.

[0161] The cleaning component 1 includes a main body 11 and a plurality of scrapers 12. The scrapers 12 are fixedly connected to the outer peripheral surface of the main body 11 and are distributed at intervals along the circumference of the main body 11. The main body 11 has a third end 111 and a fourth end 112 facing opposite directions along the axial direction A. A positioning part 101 is provided at the center of the fourth end 112. The positioning part 101 is a groove. The positioning component is configured to obtain the first coordinate of the center of the positioning part 101 and the second coordinate of the center of the second end 22. The driving component 2 is configured to control the movement of the cleaning component 1 according to the first coordinate and the second coordinate.

[0162] The drive assembly 2 can drive the cleaning assembly 1 to enter or exit the welding cavity 201 through the first opening 211, so that the cleaning assembly 1 moves to the first position T1. In the first position T1, the main body 11 and the welding nozzle 200 are coaxially arranged, and the scraper 12 is radially B away from the end surface of the main body 11. The first gap between the scraper 12 and the cavity wall 23 radially B is L, 0.5mm≤L≤1mm. The drive assembly 2 drives the scraper 12 to rotate, so that the scraper 12 can scrape off the welding slag 300 so that the welding slag 300 is separated from the cavity wall 23.

[0163] The detection component 5 includes a second imaging element 51 and a background plate 52. The cleaning mechanism 100 has a detection state. In the detection state, along the axial direction A, the background plate 52 is located on the side of the first end 21 away from the second end 22, and the second imaging element 51 is located on the side of the second end 22 away from the first end 21. The background plate 52 is configured to display the image captured by the second imaging element 51. The suction component 4 is configured to communicate with the slag discharge hole 202 provided on the periphery of the welding nozzle 200. The positioning component includes a first imaging element 31, which is located on the side of the second end 22 away from the first end 21. The first imaging element 31 is configured to capture the position image of the positioning part 101 and the position image of the second end 22.

[0164] It should be noted that, unless otherwise specified, the embodiments and features described in this application can be combined with each other.

[0165] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this application, and are not intended to limit them. Although this application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the foregoing embodiments, or make equivalent substitutions for some of the technical features. However, these modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of this application.

Claims

1. A welding device, characterized in that, include: Welding nozzle, with a welding cavity; A cleaning mechanism is used to clean the welding slag adhering to the cavity wall of the welding cavity. The cleaning mechanism includes a cleaning component and a driving component. The cleaning component includes a main body and a scraper. The scraper is connected to the main body and protrudes from the outer peripheral surface of the main body. The driving component is connected to the cleaning component and is configured to drive the cleaning component to move so that the cleaning component enters or exits the welding cavity. The driving component is also configured to drive the scraper to rotate. The drive assembly is capable of driving the cleaning assembly to a first position, in which at least a portion of the cleaning assembly is located in the welding cavity, and along the radial direction of the welding nozzle, a first gap is formed between the outer peripheral surface of the scraper away from the body and the cavity wall of the welding cavity, and in the first position the drive assembly is configured to drive the scraper to rotate, so that the scraper contacts the welding slag to separate the welding slag from the cavity wall of the welding cavity; The value of the first gap is L, where 0.5mm ≤ L ≤ 1mm.

2. The welding equipment according to claim 1, characterized in that, In the first position, the main body and the welding nozzle are coaxially arranged.

3. The welding equipment according to claim 1, characterized in that, 0.5mm≤L≤0.75mm.

4. The welding equipment according to any one of claims 1 to 3, characterized in that, Along the axial direction of the welding nozzle, the welding cavity includes a first cavity and a second cavity that are connected in communication, and the scraper has a first scraper portion and a second scraper portion that are connected in communication. At the first position, at least a portion of the first scraper portion is located in the first cavity, and at least a portion of the second scraper portion is located in the second cavity. Along the radial direction, the first gap is formed between the end surface of the first scraper portion away from the outer peripheral surface of the body and the cavity wall of the first cavity, and the first gap is formed between the end surface of the second scraper portion away from the outer peripheral surface of the body and the cavity wall of the second cavity.

5. The welding equipment according to claim 4, characterized in that, The welding cavity further includes a third cavity, and the scraper also has a third scraper portion. Along the axial direction of the welding nozzle, the third cavity is connected to the side of the second cavity away from the first cavity, and the third scraper portion is connected to the side of the second scraper portion away from the first scraper portion. In the first position, at least a portion of the third scraper portion is located in the third cavity, and along the radial direction, the first gap exists between the end surface of the third scraper portion away from the outer peripheral surface of the body and the cavity wall of the third cavity.

6. The welding equipment according to claim 5, characterized in that, The main body has a first main body portion, a second main body portion, and a third main body portion connected together. The first scraper portion is connected to the first main body portion, the second scraper portion is connected to the second main body portion, and the third scraper portion is connected to the third main body portion. The shape of the first main body portion is the same as the shape of the first cavity, the shape of the second main body portion is the same as the shape of the second cavity, and the shape of the third main body portion is the same as the shape of the third cavity.

7. The welding equipment according to any one of claims 1 to 3, characterized in that, The number of scrapers is multiple, and the multiple scrapers are distributed at intervals along the circumference of the main body.

8. The welding equipment according to any one of claims 1 to 3, characterized in that, The drive assembly is connected to the main body, and the scraper is fixedly connected to the main body.

9. The welding equipment according to any one of claims 1 to 3, characterized in that, The welding nozzle also has a first end and a second end facing opposite directions along its own axial direction. The first end has a first opening communicating with the welding cavity, and the second end has a second opening communicating with the welding cavity. The area of ​​the first opening is larger than the area of ​​the second opening. The driving component is capable of driving at least a portion of the cleaning component to enter or exit the welding cavity through the first opening.

10. The welding equipment according to claim 9, characterized in that, In the first position, along the axial direction, the end of the scraper opposite to the first opening is located on the side of the second opening opposite to the welding cavity.

11. The welding equipment according to claim 9, characterized in that, The cleaning mechanism further includes a positioning component. The main body is provided with a positioning part. The positioning component is configured to obtain a first coordinate of the center of the positioning part and a second coordinate of the center of the second end. The driving component is further configured to drive the cleaning component to move to the first position according to the first coordinate and the second coordinate.

12. The welding equipment according to claim 11, characterized in that, The main body has a third end and a fourth end facing opposite directions along the axial direction. The fourth end is provided with the positioning part. In the first position, the fourth end is closer to the second end relative to the first end.

13. The welding equipment according to claim 12, characterized in that, The positioning component includes a first imaging element along the axial direction, the first imaging element being disposed on the side of the second end opposite to the first end, and the first imaging element being configured to capture a position image of the positioning part and a position image of the second end.

14. The welding equipment according to claim 12, characterized in that, The positioning part includes a groove provided at the fourth end, and / or the positioning part is provided at the center of the fourth end.

15. The welding equipment according to claim 10, characterized in that, The cleaning mechanism further includes a detection component, which includes a second imaging element and a background plate. The cleaning mechanism has a detection state in which, along the axial direction, the background plate is disposed on the side of the first end opposite to the second end, and the second imaging element is disposed on the side of the second end opposite to the first end. The background plate is configured to display an image captured by the second imaging element.

16. The welding equipment according to any one of claims 1 to 3, characterized in that, The cleaning mechanism also includes a suction component, and the periphery of the welding nozzle is provided with a slag discharge hole communicating with the welding cavity. The suction component is connected to the slag discharge hole.

17. A battery cell production line, characterized in that, Includes the welding equipment according to any one of claims 1 to 16.

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