Welding tool, welding equipment and battery production system

Abstract

The utility model relates to a welding tool, welding equipment and a battery production system. The welding tool comprises a bearing piece and a welding nozzle module. The bearing part is provided with a plurality of mounting positions; the welding nozzle modules are arranged at the mounting positions in a one-to-one correspondence mode, each welding nozzle module comprises a first part and a second part, the first part is provided with a first gas injection channel and a first laser channel with the two ends communicating with each other, and the first gas injection channel is arranged on the periphery of the first laser channel in a surrounding mode and communicates the outside with the first laser channel; one end of the second part is detachably connected with the first part, the other end of the second part is detachably connected with the bearing piece, the second part is provided with a second gas injection channel and a second laser channel with two ends communicated with each other, one end of the second gas injection channel is communicated with the first gas injection channel, and the other end of the second gas injection channel is constructed as a gas injection port; the second laser channel and the first laser channel are coaxially arranged and communicate with each other. The welding nozzle module is divided into two detachable parts, so that a user can conveniently clean welding slag in the welding nozzle module.

Description

Technical Field

[0001] The present application relates to the field of welding technology, and in particular to a welding tool, welding equipment and a battery production system. Background Art

[0002] In the process of battery module production, the tab and the pole need to be welded. In order to reduce the phenomenon of cold welding, the tab and the pole need to be pressed with the welding nozzle of the welding tool so that the tab can be in close contact with the pole. The laser passes through the inner hole of the welding nozzle to weld the tab and the pole, thereby achieving an ideal welding effect. The welding nozzle is fixed on the pressure plate.

[0003] When welding tools are used for a long time, a lot of welding slag will accumulate inside the welding nozzle, so the welding nozzle needs to be cleaned. Because the welding nozzle with strong shielding gas delivery has a complex structure, it takes a lot of time for users to remove the welding nozzle and clean it, which affects the cleaning efficiency. Utility Model Content

[0004] In view of the above problems, the present application provides a welding tool, welding equipment and battery production system, which can improve the problem of complex structure and inconvenient disassembly of the welding nozzle without affecting the performance of the welding nozzle.

[0005] In a first aspect, the present application provides a welding tool, which includes a carrier and a welding nozzle module. The carrier is provided with a plurality of mounting positions; each welding nozzle module is arranged in a one-to-one correspondence at each mounting position, and each welding nozzle module includes a first part and a second part, the first part is provided with a first gas injection channel and a first laser channel with two ends interpenetrating each other, the first gas injection channel is arranged around the periphery of the first laser channel and communicates between the outside and the first laser channel;

[0006] One end of the second part is detachably connected to the first part, and the other end is detachably connected to the carrier. The second part is provided with a second gas injection channel and a second laser channel which is interconnected at both ends. One end of the second gas injection channel is connected to the first gas injection channel, and the other end is constructed as a gas injection port. The second laser channel and the first laser channel are coaxially arranged and connected.

[0007] In the technical solution of the embodiment of the present application, when a protective gas (such as an inert gas) is injected into the gas injection port of the second gas injection channel, the protective gas can flow along the second gas injection channel to the first gas injection channel, and then flow into the first laser channel. When the laser reaches the first laser channel and irradiates the welding surface of the workpiece to be welded for welding, the protective gas can also reach the welding surface of the workpiece to be welded through the first laser channel and form a protection area in the first laser channel to reduce the probability of the smoke in the first laser channel being irradiated by the laser and causing the smoke to explode, thereby improving the safety of laser welding. The welding nozzle module is constructed into two detachable parts, and the welding nozzle module and the carrier are set to a detachable connection mode, which reduces the difficulty of the user to clean the inside of the welding nozzle module and facilitates the user to clean the welding slag inside the welding nozzle module.

[0008] In some embodiments, the first part is provided with an annular groove, which is configured as a first gas injection channel. The annular groove is arranged circumferentially around the first laser channel. A plurality of ventilation holes are provided in the annular groove. The plurality of ventilation holes are arranged at intervals along the circumference of the annular groove, and all the ventilation holes are connected to the first laser channel.

[0009] With such arrangement, the protective gas in the annular groove can quickly enter the first laser channel and be evenly distributed in the first laser channel.

[0010] In some embodiments, the welding nozzle module further includes a dust extraction member, one end of which is connected to the second laser channel, and the other end of which is connected to the outside.

[0011] Because the gas injection channel and the laser channel are connected, smoke can diffuse from the laser channel to the gas injection channel and adhere to and accumulate in the gas injection channel. The dust extraction part can be used to preliminarily clean the welding slag and smoke in the welding nozzle module in time, reduce the degree of welding slag and smoke adhering to and accumulating in different gas injection channels and laser channels, and reduce the difficulty of cleaning inside the welding nozzle module.

[0012] In some embodiments, the dust extraction member includes a dust extraction pipe and a dust extraction channel. The dust extraction channel is disposed in the second portion and is connected to the second laser channel. The dust extraction pipe and the dust extraction channel are detachably connected.

[0013] Because the dust extraction pipe can be disassembled, the dust extraction pipe can be regularly removed from the second part and cleaned to maintain the use effect of the dust extraction pipe. In addition, when the dust extraction pipe is damaged, the dust extraction pipe can also be removed separately and replaced with a new one, which reduces the maintenance cost of the welding nozzle module compared to replacing the entire welding nozzle module.

[0014] In some embodiments, the welding tool also includes a dust collection component, and the dust extraction parts of all welding nozzle modules are connected to the dust collection component.

[0015] In this way, the welding slag and smoke discharged from each dust extraction component are uniformly collected by the dust collection component, so that the user can centrally process the welding slag and smoke generated by all welding nozzle modules.

[0016] In some embodiments, the dust collecting assembly is detachably connected to the supporting member and is located on a side of the supporting member facing away from the welding nozzle module.

[0017] Thus, by providing a channel connecting the dust collecting assembly and all the welding nozzle modules in the carrier, the volume occupied by the dust collecting assembly can be reduced, and the difficulty of preparing the dust collecting assembly can be reduced, compared with exposing these channels to the outside of the carrier. In addition, when the dust collecting assembly is damaged, it is also convenient to remove the damaged dust collecting assembly and replace it with a new one, thereby reducing the maintenance cost of the welding tooling.

[0018] In some embodiments, the dust collection assembly includes a dust collection hood and at least two dust exhaust pipes. The dust collection hood is disposed on the carrier and is connected to all the dust exhaust pipes. Each dust exhaust pipe is connected to at least part of the dust extraction pipes.

[0019] With such an arrangement, multiple dust exhaust pipes are used to divert and discharge the welding slag and smoke extracted by all the dust extraction pipes, which can reduce the problem of easy clogging of the dust exhaust pipes caused by discharging the welding slag and smoke extracted by all the dust extraction pipes through one dust exhaust pipe, and can also improve the efficiency of the dust collection component in discharging welding slag and smoke.

[0020] In some embodiments, the welding tool also includes a protective air pipe and a fixing part. The protective air pipe is connected to the air injection port. The fixing part is arranged on the supporting part and is provided for the protective air pipe to pass through so as to limit the protective air pipe.

[0021] In this way, the fixing part can limit the protective gas pipe, reduce the probability of the protective gas pipe shaking when injecting protective gas into the protective gas pipe, and improve the stability of the connection between the external gas injection mechanism and the protective gas pipe, so as to improve the smoothness of injecting the protective gas.

[0022] In some embodiments, the welding nozzle module further includes an insulating member, and the insulating member is disposed on the second portion.

[0023] In this way, the insulating member can be used to separate two adjacent welding nozzle modules, and during the welding process, the arc generated due to the close distance between the two adjacent welding nozzle modules can be reduced.

[0024] In some embodiments, the welding nozzle module further includes a return member, one end of which is connected to the second part, and the other end of which is connected to the supporting member.

[0025] With such arrangement, elastic contact between the welding nozzle module and the workpiece to be welded is achieved by utilizing the return member, thereby reducing the probability that the welding nozzle module applies excessive force to the workpiece to be welded, thereby causing damage to the workpiece to be welded.

[0026] In a second aspect, the present application provides a welding device, which includes the welding tool in the above embodiment.

[0027] In a third aspect, the present application provides a battery production system, the welding equipment in the above embodiment.

[0028] The above description is only an overview of the technical solution of the present application. In order to more clearly understand the technical means of the present application, it can be implemented in accordance with the contents of the specification. In order to make the above and other purposes, features and advantages of the present application more obvious and easy to understand, the specific implementation methods of the present application are listed below. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] Various other advantages and benefits will become apparent to those of ordinary skill in the art by reading the detailed description of the preferred embodiments below. The accompanying drawings are only for the purpose of illustrating the preferred embodiments and are not to be considered as limiting the present application. Moreover, the same reference numerals are used throughout the drawings to represent the same components. In the drawings:

[0030] Figure 1 is a perspective view of a welding tool according to one or more embodiments.

[0031] Figure 2 is a perspective view of a welding nozzle module of a welding tool according to one or more embodiments.

[0032] Figure 3 is a perspective view of a second portion of a welding nozzle module according to one or more embodiments.

[0033] Figure 4 is a cross-sectional view of a second portion of a welding nozzle module according to one or more embodiments.

[0034] Figure 5 is a perspective view of a first portion of a welding nozzle module according to one or more embodiments.

[0035] Figure 6 is a cross-sectional view of a first portion of a welding nozzle module according to one or more embodiments.

[0036] Figure 7 is a stereoscopic view of a welding tool according to one or more embodiments at another viewing angle.

[0037] Figure 8 is a cross-sectional view of a dust collection assembly of a welding tool according to one or more embodiments.

[0038] The reference numerals in the specific implementation manner are as follows:

[0039] 100. Welding tool; 10. Carrying part; 11. Mounting position; 20. Welding nozzle module; 21. First part; 211. First gas injection channel; 2111. Air vent; 212. First laser channel; 22. Second part; 221. Second gas injection channel; 2211. Gas injection port; 222. Second laser channel; 23. Dust extraction part; 231. Dust extraction pipe; 232. Dust extraction channel; 24. Insulating part; 25. Return part; 30. Dust collection assembly; 31. Dust hood; 32. Dust exhaust pipe; 40. Protective air pipe; 50. Fixing part. DETAILED DESCRIPTION

[0040] The following embodiments of the technical solution of the present application are described in detail in conjunction with the accompanying drawings. The following embodiments are only used to more clearly illustrate the technical solution of the present application, and are therefore only used as examples, and cannot be used to limit the scope of protection of the present application.

[0041] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by technicians in the technical field to which this application belongs; the terms used herein are only for the purpose of describing specific embodiments and are not intended to limit this application; the terms "including" and "having" in the specification and claims of this application and the above-mentioned figure descriptions and any variations thereof are intended to cover non-exclusive inclusions.

[0042] In the description of the embodiments of the present application, if technical terms such as "first" and "second" appear, they are only used to distinguish different objects, and cannot be understood as indicating or implying relative importance or implicitly indicating the number, specific order or primary and secondary relationship of the indicated technical features. In the description of the embodiments of the present application, the meaning of "multiple" is more than two, unless otherwise clearly and specifically defined.

[0043] Reference to "embodiments" herein means that a particular feature, structure, or characteristic described in conjunction with the embodiments may be included in at least one embodiment of the present application. The appearance of the phrase in various locations in the specification does not necessarily refer to the same embodiment, nor is it an independent or alternative embodiment that is mutually exclusive with other embodiments. It is explicitly and implicitly understood by those skilled in the art that the embodiments described herein may be combined with other embodiments.

[0044] In the description of the embodiments of the present application, if the term "and / or" appears, it is only a description of the association relationship of the associated objects, indicating that three relationships may exist. For example, A and / or B can represent: A exists alone, A and B exist at the same time, and B exists alone. In addition, if it appears, the character " / " in this article generally indicates that the associated objects before and after are in an "or" relationship.

[0045] In the description of the embodiments of the present application, if it appears, the term "multiple" refers to more than two (including two). Similarly, "multiple groups" refers to more than two groups (including two groups), and "multiple pieces" refers to more than two pieces (including two pieces).

[0046] In the description of the embodiments of the present application, if any, the technical terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. indicate the orientation or position relationship based on the orientation or position relationship shown in the accompanying drawings, which is only for the convenience of describing the embodiments of the present application and simplifying the description, and does not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the embodiments of the present application.

[0047] In the description of the embodiments of the present application, unless otherwise clearly specified and limited, if any technical terms such as "installed", "connected", "connected", "fixed" and the like are to be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral one; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the embodiments of the present application can be understood according to the specific circumstances.

[0048] Laser welding is a widely used welding method. It is used in various fields with the characteristics of high efficiency, high welding strength and low noise, such as new energy lithium-ion battery tab welding and Busbar (busbar) welding, etc.

[0049] At present, welding tools are usually used for laser welding. During the welding process, a large amount of welding slag and smoke will be generated. Among them, the welding nozzle module is an important component of the welding tool, which has the functions of guiding light and conveying shielding gas. As the use time of the welding tool increases, the welding slag and smoke accumulated in the welding nozzle module will also increase, thereby affecting the performance of the welding nozzle module. Therefore, the welding nozzle module needs to be cleaned regularly, and the welding nozzle module with a good shielding gas delivery effect is difficult to clean and inconvenient for users to operate.

[0050] Based on the above considerations, in order to solve the problem that the welding nozzle module with a strong ability to deliver protective gas is inconvenient to clean after long-term use, some embodiments of the present application provide a welding tool, which includes a carrier and a welding nozzle module. The welding nozzle module includes a first part and a second part that are detachably connected, and the first part includes a first gas injection channel and a first laser channel that is arranged through, wherein the first gas injection channel is connected to the first laser channel and is arranged circumferentially around the first laser channel. In this way, gas can be evenly supplied to the first laser channel through the first gas injection channel, and the welding nozzle module is divided into two detachable parts to expose the interior of the welding nozzle module and clean the interior thereof.

[0051] The welding tool disclosed in the embodiment of the present application can be used for welding in the battery production process but is not limited thereto, and can also be used for welding between two parts that need to be pressed together in the production process of other products. A battery production system can be composed of welding tool, welding equipment, etc. disclosed in the embodiment of the present application for welding between tabs and poles in the battery production process.

[0052] See also Figure 1 The present application provides a welding tool 100, which includes a carrier 10 and a welding nozzle module 20. The carrier 10 is provided with a plurality of mounting positions 11, and the welding nozzle module 20 is provided at the mounting positions 11 and includes a first part 21 and a second part 22.

[0053] Among them, the first part 21 is provided with a first gas injection channel 211 and a first laser channel 212 which are interconnected at both ends. The first gas injection channel 211 is arranged around the outer periphery of the first laser channel 212 and is connected between the outside and the first laser channel 212; one end of the second part 22 is detachably connected to the first part 21, and the other end is detachably connected to the carrier 10. The second part 22 is provided with a second gas injection channel 221 and a second laser channel 222 which are interconnected at both ends. One end of the second gas injection channel 221 is connected to the first gas injection channel 211, and the other end is constructed as a gas injection port 2211. The second laser channel 222 and the first laser channel 212 are coaxially arranged and connected.

[0054] The carrier 10 is used to install the welding nozzle module 20, and its shape can be, but is not limited to, a plate shape. During use, by applying force to the carrier 10, the welding nozzle module 20 can be driven to move and come into close contact with the busbar to eliminate the welding gap between the busbar and the pole of the battery to be welded, thereby increasing the welding penetration and reducing the probability of poor welding such as cold welding and desoldering. In some embodiments, the carrier 10 is provided with a mounting groove or a protrusion, and the mounting groove or the protrusion is configured to be used to set the mounting position 11 of the welding nozzle module 20.

[0055] The welding nozzle module 20 is used for passing laser and injecting shielding gas to define the path for passing laser and the path for shielding gas to flow. The first part 21 and the second part 22 are assembled together to form a channel for passing laser and shielding gas respectively.

[0056] Specifically, the connection between the first part 21 and the carrier 10 may be, but is not limited to, a clamping connection or a threaded connection. The connection between the first part 21 and the second part 22 may also be, but is not limited to, a clamping connection or a threaded connection.

[0057] For example, Figures 2 to 4 As shown, the first part 21 and the second part 22 are distributed along the first direction (i.e., the axis of the laser channel), the first part 21 is provided with a first laser channel 212 extending along the first direction and passing through it, and the second part 22 is provided with a second laser channel 222 extending along the first direction and passing through it. When the first part 21 and the second part 22 are assembled together, the first laser channel 212 and the second laser channel 222 jointly form a channel for laser to pass through.

[0058] When a protective gas (such as an inert gas) is injected into the gas injection port 2211 of the second gas injection channel 221, the protective gas can flow along the second gas injection channel 221 to the first gas injection channel 211, and then flow into the first laser channel 212. When the laser reaches the first laser channel 212 and irradiates the welding surface of the workpiece to be welded for welding, the protective gas can also reach the welding surface of the workpiece to be welded through the first laser channel 212 and form a protective area in the first laser channel 212 to reduce the probability of smoke explosion caused by the laser irradiating the smoke in the first laser channel 212, thereby improving the safety of laser welding.

[0059] Because the first gas injection channel 211 is disposed around the first laser channel 212 , the protective gas can evenly enter the first laser channel 212 , thereby improving the uniformity of the protective gas distributed in the first laser channel 212 .

[0060] After the welding tool 100 is used for a long time, a large amount of welding slag will accumulate inside the welding tool 100. At this time, the first part 21 can be removed from the second part 22 to clean the inside of the welding nozzle module 20. Alternatively, the entire welding nozzle module 20 can be removed from the carrier 10, and then the individual welding nozzle modules 20 can be disassembled to clean the welding nozzle modules 20.

[0061] In summary, the welding nozzle module 20 is constructed into two detachable parts, and the welding nozzle module 20 and the carrier 10 are arranged in a detachable connection mode, which reduces the difficulty of the user to clean the inside of the welding nozzle module 20 and facilitates the user to clean the welding slag inside the welding nozzle module 20.

[0062] like Figure 5 and Figure 6 As shown, in some embodiments, the first part 21 is provided with an annular groove, which is configured as a first gas injection channel 211. The annular groove is circumferentially arranged around the first laser channel 212. A plurality of ventilation holes 2111 are provided in the annular groove. The plurality of ventilation holes 2111 are circumferentially spaced apart from each other along the annular groove, and all the ventilation holes 2111 are connected to the first laser channel 212.

[0063] Exemplarily, the first portion 21 is provided with an annular groove recessed in a first direction, and the annular groove and the first laser channel 212 are arranged coaxially. The annular groove and the first laser channel 212 share a wall body, and the wall body is provided with a vent hole 2111. When the protective gas enters the annular groove, the protective gas at different parts of the annular groove can enter the first laser channel 212 from different vent holes 2111. In this way, the protective gas in the annular groove can quickly enter the first laser channel 212 and be evenly distributed in the first laser channel 212.

[0064] For further information, see Figure 2 and Figure 3 In some embodiments, the welding nozzle module 20 further includes a dust extractor 23, one end of the dust extractor 23 is connected to the second laser channel 222, and the other end is connected to the outside.

[0065] The dust extraction member 23 can be configured as a member with an exhaust function or a member that needs to be equipped with a negative pressure device. When the laser is irradiated on the welding surface of the workpiece to be welded and welding is performed, welding slag and smoke can be generated in the first laser channel 212. Because the first laser channel 212 and the second laser channel 222 are connected, the welding slag and smoke in the first laser channel 212 can enter the dust extraction member 23 through the second laser channel 222 and finally be discharged from the welding nozzle module 20.

[0066] Because the gas injection channel and the laser channel are connected, smoke can diffuse from the laser channel to the gas injection channel and adhere to and accumulate in the gas injection channel. The dust extraction member 23 can be used to preliminarily clean the welding slag and smoke in the welding nozzle module 20 in time, reduce the degree of welding slag and smoke adhering to and accumulating in different gas injection channels and laser channels, and reduce the difficulty of cleaning the inside of the welding nozzle module 20.

[0067] For further information, see Figures 2 to 4 In some embodiments, the dust extraction member 23 includes a dust extraction pipe 231 and a dust extraction channel 232. The dust extraction channel 232 is disposed in the second portion 22 and is connected to the second laser channel 222. The dust extraction pipe 231 and the dust extraction channel 232 are detachably connected.

[0068] The wall of the second part 22 may be provided with a dust extraction channel 232 , and the connection between the dust extraction channel 232 and the dust extraction pipe 231 may be, but is not limited to, a clamping connection or a threaded connection. For example, the dust extraction pipe 231 is plugged into the dust extraction channel 232 .

[0069] For example, in actual application, one end of the dust extraction pipe 231 can be connected to the negative pressure device located outside, and the other end can be plugged into the dust extraction channel 232. As the welding tool 100 is used for a long time, a large amount of welding slag and dust can accumulate on the inner wall of the dust extraction pipe 231. If this continues for a long time, the dust extraction pipe 231 may be blocked, thereby affecting the use effect of the dust extraction pipe 231.

[0070] Based on the above situation, since the dust extraction tube 231 can be disassembled, the dust extraction tube 231 can be regularly removed from the second part 22 and cleaned to maintain the use effect of the dust extraction tube 231. In addition, when the dust extraction tube 231 is damaged, the dust extraction tube 231 can also be removed separately and replaced with a new dust extraction tube 231, which reduces the maintenance cost of the welding nozzle module 20 compared to replacing the entire welding nozzle module 20.

[0071] In other embodiments, the dust extraction pipe 231 and the second part 22 can also be sealed.

[0072] Specifically, Figure 7 and Figure 8 As shown, in some embodiments, the welding tool 100 further includes a dust collection assembly 30 , and the dust extraction components 23 of all welding nozzle modules 20 are connected to the dust collection assembly 30 .

[0073] For example, the welding tool 100 includes five welding nozzle modules 20, each of which is equipped with a dust extraction member 23. All dust extraction members 23 are connected to the dust collection assembly 30. That is, the welding slag and smoke discharged from each dust extraction member 23 are uniformly collected by the dust collection assembly 30, so that the user can centrally process the welding slag and smoke generated by all welding nozzle modules 20.

[0074] More specifically, in some embodiments, the dust collecting assembly 30 is detachably connected to the carrier 10 and is located on a side of the carrier 10 facing away from the welding nozzle module 20 .

[0075] The connection between the dust collecting assembly 30 and the carrier 10 may be, but is not limited to, threaded connection. A channel is provided inside the carrier 10 to connect each welding nozzle module 20 and the dust collecting assembly 30 .

[0076] Because the end of the welding nozzle module 20 away from the carrier 10 contacts the workpiece to be welded, a dust collecting assembly 30 is provided on the side of the carrier 10 away from the welding nozzle module 20. A channel connecting the dust collecting assembly 30 and all the welding nozzle modules 20 is provided in the carrier 10. Compared with exposing these channels to the outside of the carrier 10, the volume occupied by the dust collecting assembly 30 can be reduced, and the difficulty of preparing the dust collecting assembly 30 can be reduced. In addition, when the dust collecting assembly 30 is damaged, it is also convenient to remove the damaged dust collecting assembly 30 and replace it with a new dust collecting assembly 30, thereby reducing the maintenance cost of the welding tool 100.

[0077] It should be noted that a cavity may be provided inside the carrier 10, and the cavity is connected to all the welding nozzle modules 20. Alternatively, the carrier 10 is provided with a plurality of through holes, and the number of the through holes is equal to the number of the welding nozzle modules 20, and they correspond one to one.

[0078] See also Figure 7 and Figure 8 In some embodiments, the dust collecting assembly 30 includes a dust collecting hood 31 and at least two dust exhaust pipes 32 . The dust collecting hood 31 is disposed on the carrier 10 and is connected to all the dust exhaust pipes 32 . Each dust exhaust pipe 32 is connected to at least part of the dust extraction pipe 231 .

[0079] Exemplarily, the dust collection assembly 30 includes two dust exhaust pipes 32 and a dust hood 31. Both dust exhaust pipes 32 can be fixed to the dust hood 31 by bolts, and the dust hood 31 can also be fixed to the carrier 10 by bolts. The welding tool 100 includes five welding nozzle modules 20, and each welding nozzle module 20 is equipped with a dust extraction pipe 231. Two of the dust extraction pipes 231 are connected to one dust exhaust pipe 32, and the remaining three dust extraction pipes 231 are connected to another dust exhaust pipe 32. In this way, the welding slag and smoke extracted by some dust extraction pipes 231 can be discharged from one of the dust exhaust pipes 32, and the welding slag and smoke extracted by the remaining dust extraction pipes 231 can be discharged from another dust exhaust pipe 32.

[0080] With such an arrangement, multiple dust exhaust pipes 32 are used to divert and discharge the welding slag and smoke extracted by all the dust extraction pipes 231, which can reduce the problem of the dust exhaust pipe 32 being easily blocked due to discharging the welding slag and smoke extracted by all the dust extraction pipes 231 through one dust exhaust pipe 32, and can also improve the efficiency of the dust collection component 30 in discharging welding slag and smoke.

[0081] It should be noted that the number of dust exhaust pipes 32 provided in the dust collecting assembly 30 can be determined according to actual conditions, and the number of dust extraction pipes 231 connected to a single dust exhaust pipe 32 can also be determined according to specific conditions. The dust collecting cover 31 and the carrier 10 can also be sealed.

[0082] like Figure 1As shown, in some embodiments, the welding tool 100 also includes a protective air pipe 40 and a fixing part 50. The protective air pipe 40 is connected to the air injection port 2211. The fixing part 50 is arranged on the supporting part 10 and is provided for the protective air pipe 40 to pass through so as to limit the protective air pipe 40.

[0083] For example, the fixing member 50 may be, but is not limited to, configured as a clamping ring. It may be disposed on the same side as the welding nozzle module 20 and fixed by screws. The gas injection port 2211 may be provided with an air pipe joint, one end of the protective air pipe 40 may be plugged into the air pipe joint, and the other end may be provided with the fixing member 50.

[0084] When the protective gas is injected into the protective gas pipe 40, the fixing part 50 can limit the protective gas pipe 40, thereby reducing the probability of the protective gas pipe 40 shaking and improving the stability when the external gas injection mechanism and the protective gas pipe 40 are connected, so as to improve the smoothness of the injection of the protective gas.

[0085] In some embodiments, Figure 1 and Figure 2 As shown, the welding nozzle module 20 further includes an insulating member 24 , and the insulating member 24 is disposed on the second portion 22 .

[0086] The insulating member 24 provided for each welding nozzle module 20 may be located between two adjacent welding nozzle modules 20 and may be used to separate two adjacent welding nozzle modules 20 , thereby reducing arc generation caused by the close distance between two adjacent welding nozzle modules 20 during welding.

[0087] See also Figure 2 In some embodiments, the welding nozzle module 20 further includes a return member 25 , one end of the return member 25 is connected to the second portion 22 , and the other end of the return member 25 is connected to the carrier 10 .

[0088] Exemplarily, the return member 25 includes a bolt, a spring and a bushing. One end of the bolt is connected to the second part 22, and the other end is used to connect to the bearing member 10. The bushing and the spring are arranged in parallel on the outside of the bushing, and one end of the spring abuts against the second part 22, and the other end abuts against the bushing.

[0089] After the first part 21 of the welding nozzle module 20 contacts the workpiece to be welded, pressure is applied to the carrier 10 to improve the tightness between the first part 21 and the workpiece to be welded. In this process, the pressure on the carrier 10 can be transmitted to the spring, thereby compressing the spring to deform it, and the spring applies pressure to the welding nozzle module 20 to move the first part 21 toward the workpiece to be welded.

[0090] After welding is completed, the pressure applied to the carrier 10 is removed, and the spring is no longer subjected to external force. The spring returns to its initial state under the action of its own deformation force and pushes the welding nozzle module 20 back to its original position.

[0091] With such arrangement, the return member 25 is used to realize elastic contact between the welding nozzle module 20 and the workpiece to be welded, thereby reducing the probability that the welding nozzle module 20 applies excessive force to the workpiece to be welded, thereby causing damage to the workpiece to be welded.

[0092] In other embodiments, the return member 25 may be further equipped with a gasket, which may limit the bolt on the bearing member 10 to reduce excessive insertion of the bolt into the bearing member 10 .

[0093] Some embodiments of the present application further provide a welding device, which includes the welding tool 100 in the above embodiment. Because the welding device includes the welding tool 100, it has the technical effect that the welding tool 100 can achieve.

[0094] In addition, some embodiments of the present application further provide a battery production system, which includes the welding device in the above embodiments. Because the battery production system includes the welding device, it has the technical effects that can be achieved by the welding device.

[0095] like Figure 1 As shown, specifically in one embodiment, the welding tool 100 includes a carrier 10 and a plurality of welding nozzle modules 20. The carrier 10 is provided with a plurality of mounting positions 11; a welding nozzle module 20 is provided on a mounting position 11, and the welding nozzle module 20 includes a first part 21 and a second part 22, the first part 21 is provided with a first gas injection channel 211 and a first laser channel 212 arranged through, the first gas injection channel 211 is connected with the first laser channel 212, and is arranged around the circumference of the first laser channel 212, and the first laser channel 212 is arranged toward the workpiece to be welded; one end of the second part 22 is detachably connected to the first part 21, and the other end is detachably connected to the carrier 10, the second part 22 is provided with a second gas injection channel 221 and a second laser channel 222 arranged through, the second laser channel 222 and the first laser channel 212 are arranged and connected with a coaxial line, one end of the second gas injection channel 221 is connected with the first gas injection channel 211, and the other end is constructed as a gas injection port 2211.

[0096] When a protective gas (such as an inert gas) is injected into the gas injection port 2211 of the second gas injection channel 221, the protective gas can flow along the second gas injection channel 221 to the first gas injection channel 211, and then flow into the first laser channel 212. When the laser reaches the first laser channel 212 and irradiates the welding surface of the workpiece to be welded for welding, the protective gas can also reach the welding surface of the workpiece to be welded through the first laser channel 212 and form a protective area in the first laser channel 212 to reduce the probability of smoke explosion caused by the laser irradiating the smoke in the first laser channel 212, thereby improving the safety of laser welding.

[0097] Because the first gas injection channel 211 is disposed around the first laser channel 212 , the protective gas can evenly enter the first laser channel 212 , thereby improving the uniformity of the protective gas distributed in the first laser channel 212 .

[0098] After the welding tool 100 is used for a long time, a large amount of welding slag will accumulate inside the welding tool 100. At this time, the first part 21 can be removed from the second part 22 to clean the inside of the welding nozzle module 20. Alternatively, the entire welding nozzle module 20 can be removed from the carrier 10, and then the individual welding nozzle modules 20 can be disassembled to clean the welding nozzle modules 20.

[0099] In summary, the welding nozzle module 20 is constructed into two detachable parts, and the welding nozzle module 20 and the carrier 10 are arranged in a detachable connection mode, which reduces the difficulty of the user to clean the inside of the welding nozzle module 20 and facilitates the user to clean the welding slag inside the welding nozzle module 20.

[0100] The technical features of the above-described embodiments may be arbitrarily combined. To make the description concise, not all possible combinations of the technical features in the above-described embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0101] The above-described embodiments only express several implementation methods of the present application, and the descriptions thereof are relatively specific and detailed, but they cannot be construed as limiting the scope of the patent application. It should be pointed out that, for a person of ordinary skill in the art, several variations and improvements can be made without departing from the concept of the present application, and these all belong to the protection scope of the present application. Therefore, the protection scope of the patent application shall be subject to the attached claims.

Claims

1. A welding tool, characterized in that: include: A bearing member having a plurality of mounting positions; Welding nozzle modules, each welding nozzle module is arranged in a one-to-one correspondence at each installation position, each welding nozzle module comprises a first part and a second part, the first part is provided with a first gas injection channel and a first laser channel with two ends interpenetrating with each other, the first gas injection channel is arranged around the periphery of the first laser channel and communicates between the outside and the first laser channel; One end of the second part is detachably connected to the first part, and the other end is detachably connected to the carrier. The second part is provided with a second gas injection channel and a second laser channel which is interconnected at both ends. One end of the second gas injection channel is connected to the first gas injection channel, and the other end is constructed as a gas injection port. The second laser channel and the first laser channel are coaxially arranged and connected.

2. The welding tool according to claim 1, characterized in that: The first part is provided with an annular groove, which is configured as the first gas injection channel. The annular groove is arranged circumferentially around the first laser channel. A plurality of ventilation holes are provided in the annular groove. All of the ventilation holes are arranged at intervals along the circumference of the annular groove, and all of the ventilation holes are connected to the first laser channel.

3. The welding tool according to claim 1, characterized in that: The welding nozzle module also includes a dust extraction component, one end of which is connected to the second laser channel, and the other end of which is connected to the outside.

4. The welding tool according to claim 3, characterized in that: The dust extraction member includes a dust extraction pipe and a dust extraction channel. The dust extraction channel is arranged in the second part and communicated with the second laser channel. The dust extraction pipe is detachably connected to the dust extraction channel.

5. The welding tool according to claim 4, characterized in that: The welding tool also includes a dust collection component, and the dust extraction parts of all the welding nozzle modules are connected to the dust collection component.

6. The welding tool according to claim 5, characterized in that: The dust collecting assembly is detachably connected to the supporting member and is located at a side of the supporting member away from the welding nozzle module.

7. The welding tool according to claim 5, characterized in that: The dust collecting assembly comprises a dust collecting hood and at least two dust exhaust pipes. The dust collecting hood is arranged on the bearing member and connected to all the dust exhaust pipes. Each of the dust exhaust pipes is communicated with at least part of the dust extraction pipes.

8. The welding tool according to claim 1, characterized in that: The welding tool also includes a protective air pipe and a fixing part. The protective air pipe is communicated with the air injection port. The fixing part is arranged on the bearing part and is provided for the protective air pipe to pass through so as to limit the protective air pipe.

9. The welding tool according to claim 1, characterized in that: The welding nozzle module further includes an insulating member, and the insulating member is disposed on the second portion.

10. The welding tool according to claim 1, characterized in that: The welding nozzle module further comprises a return member, one end of which is connected to the second part, and the other end of which is connected to the bearing member.

11. A welding device, characterized in that: Comprising the welding tool as claimed in any one of claims 1 to 10.

12. A battery production system, characterized in that: Comprising the welding device as claimed in claim 11.

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