Shielding gas blowing mechanism and busbar laser welding equipment

Abstract

The utility model discloses a shielding gas blowing mechanism and busbar laser welding equipment, and relates to the technical field of battery manufacturing, the shielding gas blowing mechanism is used for blowing protection when a battery module is welded, the battery module is provided with a plurality of battery monomers, the plurality of battery monomers are arranged along a first direction, each battery monomer is provided with two pole columns, and the pole columns are arranged along a second direction. A welding hole is formed in one side of each of the two poles, the shielding gas blowing mechanism comprises a base, a gas blowing assembly and a driving assembly, the gas blowing assembly is movably arranged on the base and is arranged in the first direction, and a gas outlet channel is formed in the gas blowing assembly; the driving assembly is in transmission connection with the blowing assembly, and the driving assembly drives the blowing assembly to move relative to the base, so that the air outlet channel is respectively communicated with the two welding holes of any battery monomer. According to the arrangement mode, the technical problems that in a traditional air blowing mode, a plurality of air pipes and a plurality of electromagnetic valves are adopted, so that the structure is complex, and fault points are many are solved.

Description

TECHNICAL FIELD

[0001] The utility model relates to battery manufacturing technical field, especially relate to a kind of blow protective gas mechanism and busbar laser welding equipment. BACKGROUND

[0002] Busbar laser welding is a kind of key process for welding busbar and pole of battery monomer together, to realize the electrical connection and current collection between multiple battery monomers. In order to prevent the battery monomer from oxidizing during welding, a blow protective gas mechanism is usually provided to protect the battery monomer.

[0003] Currently, in the blow protective gas mechanism, there are some problems in the traditional blow protective gas mode. On the one hand, the traditional mode usually adopts multiple gas pipes, each of which is connected with an electromagnetic valve. This structure is complex and the action is cumbersome, resulting in low welding efficiency. On the other hand, due to the large number of gas pipes and electromagnetic valves, not only the system failure rate is increased, but also the maintenance and management become difficult. UTILITY MODEL CONTENT

[0004] The main purpose of the utility model is to provide a kind of blow protective gas mechanism and busbar laser welding equipment, which aims to solve the technical problems of complex structure, difficult to accurately control the flow and coverage range of protective gas in the related technology blow protective gas mechanism.

[0005] To achieve the above purpose, the blow protective gas mechanism provided by the utility model is a kind of blow protective gas mechanism for gas blowing protection during battery module welding. The battery module has multiple battery monomers, and the multiple battery monomers are arranged along a first direction. Each battery monomer has two pole columns, and one welding hole is formed on one side of each of the two pole columns. The blow protective gas mechanism comprises:

[0006] a base;

[0007] a gas blowing assembly movably arranged on the base and arranged along the first direction, and the gas blowing assembly is provided with a gas outlet passage; and

[0008] a driving assembly in transmission connection with the gas blowing assembly, the driving assembly drives the gas blowing assembly to move relative to the base so that the gas outlet passage is in communication with the two welding holes of any battery monomer.

[0009] In an embodiment, the blow protective gas mechanism comprises a base provided with a gas blowing plate arranged along the first direction and provided with multiple gas inlet holes for the two welding holes of any battery monomer to communicate;

[0010] The blowing assembly comprises a blowing piece slidingly arranged on the blowing plate, and the blowing piece is internally provided with the air outlet channel.

[0011] The driving assembly drives the blowing piece to slide on the blowing plate so as to make the air outlet channel communicate with any air inlet hole.

[0012] In an embodiment, the blowing plate has a first side and a second side along the extension direction of the blowing plate, the first side is connected with a plurality of first connecting pipes, each of the first connecting pipes communicates with one of the air inlet holes, the second side is connected with a plurality of second connecting pipes, each of the second connecting pipes communicates with another one of the air inlet holes, and the air outlet channel respectively communicates with any first connecting pipe and any second connecting pipe.

[0013] In an embodiment, each of the first connecting pipes and each of the second connecting pipes are arranged alternately, and each of the air inlet holes respectively communicates with one of the first connecting pipes and one of the second connecting pipes.

[0014] In an embodiment, the blowing piece has two air outlet channels, the driving assembly drives the blowing piece to slide on the blowing plate so as to make one of the air outlet channels communicate with any first connecting pipe and another one of the air outlet channels communicate with any second connecting pipe.

[0015] In an embodiment, the driving assembly comprises a driving piece and a connecting piece, the driving piece is arranged on the base, and the connecting piece is arranged on the driving piece and is in transmission connection with the blowing assembly.

[0016] In an embodiment, the driving piece comprises a base, a driving part and a sliding block, the base is arranged along the extension direction of the base, the base is internally provided with a guide rail, the sliding block is slidingly connected to the guide rail and is connected with the connecting piece, the driving part can drive the sliding block to slide and drive the connecting piece to move, and the connecting piece drives the blowing assembly to slide relative to the base.

[0017] In an embodiment, opposite ends of the side of the blowing plate away from the base are respectively provided with a limiting groove, and the blowing piece is provided with a limiting protrusion close to each end of the blowing plate, and each limiting protrusion is limited in each limiting groove.

[0018] The utility model also provides a busbar laser welding equipment, the busbar laser welding equipment includes the blowing protection gas mechanism as above.

[0019] This invention utilizes a movable air-blowing assembly and a driving assembly to achieve anti-oxidation processing for battery cells. The driving assembly moves the air-blowing assembly relative to the base and along the first direction of the battery cell arrangement, connecting the air outlet channel to the two terminals of each battery cell. This ensures protective gas is delivered to the welding holes of each battery cell's terminals, solving the technical problems of complex structures and numerous failure points caused by traditional air-blowing methods that use multiple air pipes and solenoid valves. Furthermore, the driving assembly precisely controls the movement position and speed of the air-blowing assembly, ensuring it moves along a preset path and speed. The movement of the air-blowing assembly delivers air to the welding holes of different battery cell terminals more quickly and directly, reducing time wasted due to air path switching and improving the continuity and efficiency of the welding process. The movable nature of the air-blowing assembly allows for flexible adjustment of the protective gas coverage according to different welding positions, ensuring the protective gas accurately covers the welding holes of the currently welded battery cell terminals, improving the adaptability and flexibility of the welding process. Attached Figure Description

[0020] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on the structures shown in these drawings without creative effort.

[0021] Figure 1 A schematic diagram of a structural embodiment of the protective gas blowing mechanism provided by this utility model;

[0022] Figure 2 A schematic diagram of the protective gas blowing mechanism provided by this utility model from another perspective;

[0023] Figure 3 This is a structural schematic diagram of the protective gas blowing mechanism provided by this utility model from another perspective.

[0024] Explanation of icon numbers:

[0025] 1000. Protective gas blowing mechanism; 1. Base; 11. Air blowing plate; 12. Air inlet; 13. First connecting pipe; 14. Second connecting pipe; 2. Air blowing assembly; 21. Air blowing component; 22. Air outlet channel; 3. Drive assembly; 31. Drive component; 311. Base; 312. Drive unit; 313. Slider; 32. Connector.

[0026] The realization of the purpose, functional features and advantages of this utility model will be further explained in conjunction with the embodiments and with reference to the accompanying drawings. DETAILED DESCRIPTION

[0027] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative efforts fall within the scope of the present application.

[0028] It should be noted that if the embodiments of the present application involve directional indications (such as up, down, left, right, front, back, etc.), the directional indications are only used to explain the relative positional relationship, movement condition, etc. between components in a certain posture, and if the certain posture changes, the directional indications also change accordingly.

[0029] In addition, if the embodiments of the present application involve descriptions such as "first", "second", etc., the descriptions of "first", "second", etc. are only for description purposes, and cannot be understood as indicating or implying the relative importance of the indicated technical features or implicitly indicating the number of the indicated technical features. Therefore, the features limited by "first" and "second" can explicitly or implicitly include at least one of the features. In addition, "and / or" or "and / or" appearing throughout the text means that the three parallel schemes are included, for example, "A and / or B" includes A scheme, or B scheme, or A and B simultaneously satisfy the scheme. In addition, the technical solutions of each embodiment can be combined with each other, but it must be based on the fact that a person skilled in the art can realize it, and when the combination of technical solutions appears contradictory or unachievable, it should be considered that the combination of technical solutions does not exist and is not within the protection scope required by the present application.

[0030] The utility model provides a kind of blow protective gas mechanism 1000.

[0031] Please refer to Figures 1 to 3 In an embodiment of the present application, the blow protective gas mechanism is used for gas blowing protection during battery module welding. The battery module has a plurality of battery monomers, and the plurality of battery monomers are arranged along a first direction. Each battery monomer has two polar columns, and one welding hole is formed on one side of each polar column. The blow protective gas mechanism includes a base 1, a gas blowing assembly 2 and a driving assembly 3. The gas blowing assembly 2 is movably arranged on the base 1 and arranged along the first direction. The gas blowing assembly 2 is provided with a gas outlet channel 22. The driving assembly 3 is in transmission connection with the gas blowing assembly 2. The driving assembly 3 drives the gas blowing assembly 2 to move relative to the base 1 so that the gas outlet channel 22 is in communication with the two welding holes of any battery monomer.

[0032] In the embodiment, the blowing protection mechanism provided by the application is used for blowing protection during welding of the battery module. It should be noted that the battery module has a plurality of battery monomers, and the arrangement direction of the plurality of battery monomers (i.e., arranged along the first direction) includes but is not limited to linear arrangement, interval arrangement, annular arrangement, matrix row direction or column direction, curved arrangement, etc., which is not limited here. Each battery monomer corresponds to two poles, i.e., a positive pole and a negative pole. The application has a welding hole beside the two poles to prevent oxidation during welding of each pole. Specifically, the base 1 is used to carry the entire blowing protection mechanism, and the shape and size of the base 1 should be adapted to the blowing assembly 2. The blowing assembly 2 is used to transmit protection gas and provide the necessary gas environment for the welding process. The gas outlet channel 22 is used to transmit protection gas, and the protection gas includes but is not limited to argon, nitrogen, etc. The blowing assembly 2 is arranged along the first direction. It can be understood that the arrangement direction of the blowing assembly 2 includes but is not limited to linear arrangement, curved arrangement, annular arrangement, etc., which is not limited here. It is only necessary to ensure that the blowing assembly 2 can be adapted to the arrangement of the plurality of battery monomers to achieve effective protection gas transmission. When the arrangement direction of the blowing assembly 2 is linear arrangement, the base 1 is linearly extended. When the arrangement direction of the blowing assembly 2 is annular arrangement, the base 1 is annularly arranged. In an embodiment, the blowing assembly 2 is arranged on the base 1 by sliding, and a guide rail or sliding groove is arranged to guide and limit the movement track of the blowing assembly 2. In another embodiment, the blowing assembly 2 can also rotate around a certain shaft on the base 1. In another embodiment, the blowing assembly 2 can also be lifted along the vertical direction of the base 1, swung within a certain angle range (similar to rotation but generally with a smaller swing angle), etc. The driving assembly 3 is used to provide power and control for the movement of the blowing assembly 2. The type of the driving assembly 3 includes but is not limited to motor drive, air cylinder drive, etc., wherein the motor drive includes but is not limited to driving the blowing assembly 2 to move along the base 1 through a transmission device such as a belt, a lead screw, etc., which is not limited here.

[0033] The technical scheme of the utility model discloses a movable blowing assembly 2 and driving assembly 3 realize the anti-oxidation process of battery monomer, utilize driving assembly 3 drive blowing assembly 2 to be movable relative to base 1, and make blowing assembly 2 along the first direction of battery monomer arrangement movable, make that the outlet passage 22 is communicated with the pole of any battery monomer respectively, realize the protection gas blowing of the welding hole of the pole of every battery monomer, solve the technical problem that the structure is complex and the failure point is many in the conventional blowing mode using multiple gas pipes and multiple electromagnetic valves. Simultaneously due to the existence of driving assembly 3, driving assembly 3 can accurately control the moving position and speed of blowing assembly 2, to guarantee that blowing assembly 2 can move according to the preset path and speed. Simultaneously realize the blowing of the welding hole of the pole of different battery monomer through the movement of blowing assembly 2, action is more rapid and direct, reduce the time waste caused by gas circuit switching, improve the continuity and efficiency of the welding process. Simultaneously due to the movable blowing assembly 2, can flexibly adjust the coverage range of protection gas according to the welding position difference, ensure that protection gas always accurately covers on the welding hole of the pole of the battery monomer of current welding, improve the adaptability and flexibility of the welding process.

[0034] In an embodiment of the utility model, blowing protection gas mechanism includes: base 1 is equipped with blowing plate 11, blowing plate 11 is along the first direction arrangement, and is set with the multiple air inlet hole 12 of the two welding holes of any battery monomer communication, blowing assembly 2, blowing assembly 2 includes the blowing piece 21 of sliding in blowing plate 11, the inside of blowing piece 21 is set with outlet passage 22, and driving assembly 3, driving assembly 3 drives blowing piece 21 to slide in blowing plate 11 to make outlet passage 22 with any air inlet hole 12 communication.

[0035] Combining Figure 1 And Figure 2In the embodiment, it is to be noted that the embodiment is a preferred embodiment of the previous solution. The base 1 is linearly distributed, and the base 1 is provided with a blowing plate 11 for uniformly distributing the protective gas from a gas source to the welding area of each battery monomer. The blowing plate 11 is provided with a plurality of air inlet holes 12. It can be understood that the air inlet holes 12 are arranged in any direction of the blowing plate 11, and only need to be communicated with the air outlet channel 22. The air inlet holes 12 are communicated with the welding holes of the two poles. In an embodiment, one air inlet hole 12 is communicated with two welding holes. In another embodiment, two air inlet holes 12 can be communicated with two welding holes, that is, one air inlet hole 12 is communicated with one welding hole. The air inlet holes 12 are arranged in pairs, that is, two air inlet holes 12 are arranged on both sides of the blowing plate 11, so that the protective gas is transmitted to the air inlet holes 12 through the air outlet channel 22, and then transmitted to the air inlet channel through the air inlet holes 12. The blowing member 21 is used for transmitting the gas. The blowing member 21 is in the form of a sliding block 313 here, so that it can slide relative to the base 1 and can be adjusted according to the arrangement mode and position of the battery monomer, so that the air outlet channel 22 is communicated with the two welding holes of any monomer. The driving assembly 3 can be arranged beside the blowing assembly 2, and can also be arranged on the same side of the blowing assembly 2, and can be arranged according to the specific situation. The above arrangement mode can drive the blowing assembly 2 to slide relative to the base 1 through the driving assembly 3, so that the air outlet channel is communicated with any two air inlet holes 12, so as to prevent the battery monomer from being oxidized during welding.

[0036] In an embodiment of the utility model, blowing plate 11 has first side and second side along the extension direction of blowing plate 11, first side is connected with a plurality of first connecting pipe 13, each first connecting pipe 13 with one air inlet hole 12 is communicated, second side is connected with a plurality of second connecting pipe 14, each second connecting pipe 14 with another air inlet hole 12 is communicated, air outlet channel 22 is communicated with any first connecting pipe 13, any second connecting pipe 14 respectively.

[0037] In the embodiment, the first side is used for uniformly distributing the protective gas from the gas source to the corresponding air inlet hole 12 on the air blowing plate 11 through the first connecting pipe 13, so as to provide the protective gas for the welding area of one side of the battery monomer; and the second side is used for uniformly distributing the protective gas from the gas source to the corresponding air inlet hole 12 on the air blowing plate 11 through the second connecting pipe 14, so as to provide the protective gas for the welding area of the other side of the battery monomer. It can be understood that the air inlet hole 12 is arranged on the surface of the air blowing plate 11, the air inlet hole 12 is communicated with the air outlet channel 22, the first connecting pipe 13 and the second connecting pipe 14 are respectively arranged on the two sides of the air blowing plate 11, the first connecting pipe 13 and the second connecting pipe 14 are respectively communicated with the air inlet hole 12, the gas is transported to the air inlet hole 12 through the air outlet channel 22, the air inlet hole 12 respectively transmits the gas to the first connecting pipe 13 and the second connecting pipe 14, the first connecting pipe 13 is communicated with one of the welding holes, and the second connecting pipe 14 is communicated with the other welding hole. The positional relationship between the first connecting pipe 13 and the second connecting pipe 14 includes but is not limited to relative arrangement, angular arrangement and the like. The above arrangement mode ensures that the protective gas can be uniformly distributed in the welding area, a stable protection layer is formed, and the oxidation of the welding part is effectively prevented.

[0038] In an embodiment of the utility model, each first connecting pipe 13, each second connecting pipe 14 is staggered, and each air inlet hole 12 is communicated with a first connecting pipe 13 and a second connecting pipe 14.

[0039] In the embodiment, in order to further optimize the gas distribution and transmission efficiency, the first connecting pipe 13 and the second connecting pipe 14 are staggered, which helps to ensure that each air inlet hole 12 can obtain stable airflow supply, so that a uniform protective gas layer is formed in the welding area, and the oxidation of the welding part is effectively prevented.

[0040] In an embodiment of the utility model, the air blowing part 21 has two air outlet channels 22, and the driving assembly 3 drives the air blowing part 21 to slide on the air blowing plate 11 so that one of the air outlet channels 22 is communicated with any first connecting pipe 13, and the other air outlet channel 22 is communicated with any second connecting pipe 14.

[0041] In the embodiment, in order to further optimize the gas distribution and transmission efficiency, two air outlet channels 22 are arranged in the air blowing part 21, and through the two independent air outlet channels 22, uniform protective gas coverage can be provided for the two welding areas of the battery monomer at the same time, the oxidation of the welding part is effectively prevented, and the welding defects are reduced. The above arrangement mode ensures that each welding area can obtain independent and stable protective gas supply.

[0042] In an embodiment of the utility model, the driving assembly 3 includes a driving part 31 and a connecting part 32, the driving part 31 is arranged on the base 1, the connecting part 32 is arranged on the driving part 31, and the connecting part 32 is in transmission connection with the air blowing assembly 2.

[0043] In the embodiment, in order to improve the precision control of the welding process blowing assembly 2, the driving assembly 3 is provided with a driving member 31 and a connecting member 32, which are combined with each other Figure 2 The driving member 31 is arranged at the opposite side of the blowing assembly 2 and synchronously moves the blowing assembly 2 through the connecting member 32. The driving member 31 is used to provide the moving power of the blowing assembly 2. The connecting member 32 is used to transmit the power generated by the driving member 31 to the blowing assembly 2, so as to ensure the efficient transmission of the power. Specifically, the driving member 31 is preferably in the form of a motor. The connecting member 32 is connected with the blowing member 21 of the blowing assembly 2 through bolts, buckles or the like. The connecting member 32 is connected with the driving member 31 through bolts, buckles or the like. The above arrangement ensures the precise movement of the blowing assembly 2, reduces the welding quality problems, and improves the reliability and repeatability of the welding process.

[0044] In an embodiment of the utility model, driving member 31 includes base 311, drive part 312 and sliding block 313, base 311 extends along the extension direction of base 1 and is provided, base 311 is provided with guide rail, sliding block 313 is connected in guide rail and is connected with connecting member 32, drive part 312 can drive sliding block 313 to slide and drive connecting member 32 to move, and connecting member 32 drives blowing assembly 2 to slide relative to base 1.

[0045] In the embodiment, in order to realize the precise linear motion control, so as to ensure that the blowing assembly 2 can be accurately moved to the welding hole of each battery monomer, the linear module and the servo motor are adopted. The base 311 is arranged along the extension direction of the base 1 to provide stable support for the guide rail and the sliding block 313. The base 311 is provided with a guide rail, and the sliding block 313 is slidably connected to the guide rail to ensure that the movement trajectory of the sliding block 313 is stable and accurate. The sliding block 313 is connected with the connecting member 32 to transmit the power of the driving part 312 to the connecting member 32. The driving part 312 is in the form of a servo motor. The above arrangement ensures that the protective gas can be accurately delivered to the welding area by precisely controlling and efficiently transmitting the power, thereby improving the welding quality and efficiency, reducing the loss of protective gas, and enhancing the reliability and stability of the system.

[0046] In an embodiment of the utility model, the opposite ends of the side of the blowing plate 11 away from the base 1 are respectively provided with a limiting groove, and the two ends of the blowing member 21 close to the blowing plate 11 are respectively provided with a limiting protrusion, and each limiting protrusion is limited in each limiting groove.

[0047] In the embodiment, the limiting groove provides an accurate guiding path for the movement of the blowing member 21, and the limiting protrusion ensures that the blowing member 21 always moves along the predetermined track during the movement, avoiding deviation. The limiting protrusion is embedded in the limiting groove, limiting the freedom of the blowing member 21 in the direction perpendicular to the movement direction, so that the blowing member 21 can only slide in the set direction, enhancing the controllability of the movement. Under the action of the driving assembly 3, the blowing member 21 can move stably and accurately, ensuring the accurate alignment of the air outlet channel 22 and the air inlet hole 12.

[0048] The utility model also proposes a busbar laser welding equipment, this busbar laser welding equipment includes above-mentioned blowing protective gas mechanism, the specific structure of blowing protective gas mechanism refers to above-mentioned embodiment, because this busbar laser welding equipment has adopted all technical schemes of above-mentioned all embodiments, therefore at least has all beneficial effects brought by the technical scheme of above-mentioned embodiment, here no longer one by one elaborates. Among them, the device also includes a feeding mechanism, a jacking mechanism, a transplanting mechanism, etc., to move the incoming materials such as batteries to the module welding position and protect the incoming materials by blowing protective gas mechanism. It can be understood that the busbar laser welding equipment includes a support, and the blowing protective gas mechanism is arranged on the support and close to the welding position.

[0049] The above-mentioned is only the exemplary implementation of the utility model, and does not limit the patent range of the utility model, and any equivalent structural transformation made by the utility model specification and the attached drawings, or direct / indirect application in other related technical fields under the technical concept of the utility model is included in the patent protection range of the utility model.

Claims

1. A protective gas blowing mechanism for blowing gas protection during battery module welding, wherein the battery module has multiple battery cells arranged along a first direction, each battery cell has two terminals, and a welding hole is respectively formed on one side of each of the two terminals, characterized in that... The blowing protection gas mechanism comprises: a base (1); a blowing assembly (2) movably arranged on the base (1) and arranged along the first direction, the blowing assembly (2) being provided with an air outlet channel (22); and a driving assembly (3) in driving connection with the blowing assembly (2), the driving assembly (3) driving the blowing assembly (2) to move relative to the base (1) so that the air outlet channel (22) is in communication with the two welding holes of any battery monomer.

2. The protective gas blowing apparatus according to claim 1, wherein The blowing protection gas mechanism comprises: a base (1) provided with a blowing plate (11), the blowing plate (11) being arranged along the first direction and provided with a plurality of air inlet holes (12) for the two welding holes of any battery monomer to communicate; a blowing assembly (2) comprising a blowing piece (21) slidingly arranged on the blowing plate (11), the blowing piece (21) being provided with the air outlet channel (22) inside; and 3. The protective gas blowing apparatus according to claim 2, wherein a driving assembly (3) driving the blowing piece (21) to slide on the blowing plate (11) so that the air outlet channel (22) is in communication with any air inlet hole (12).

4. The protective gas blowing apparatus according to claim 3, wherein The blowing plate (11) has a first side and a second side along the extension direction of the blowing plate (11), the first side is connected with a plurality of first connecting pipes (13), each first connecting pipe (13) is in communication with one air inlet hole (12), the second side is connected with a plurality of second connecting pipes (14), each second connecting pipe (14) is in communication with another air inlet hole (12), and the air outlet channel is in communication with any first connecting pipe (13) and any second connecting pipe (14) respectively.

5. The protective gas blowing apparatus according to claim 4, wherein Each first connecting pipe (13) and each second connecting pipe (14) are arranged alternately, and each air inlet hole (12) is in communication with one first connecting pipe (13) and one second connecting pipe (14) respectively.

6. The protective gas blowing apparatus according to any one of claims 1 to 5, wherein The blowing piece (21) has two air outlet channels (22), the driving assembly (3) drives the blowing piece (21) to slide on the blowing plate (11) so that one air outlet channel (22) is in communication with any first connecting pipe (13) and the other air outlet channel (22) is in communication with any second connecting pipe (14). The driving assembly (3) comprises a driving piece (31) and a connecting piece (32), the driving piece (31) is arranged on the base (1), and the connecting piece (32) is arranged on the driving piece (31) and in driving connection with the blowing assembly (2).

7. The protective gas blowing apparatus according to claim 6, wherein The driving member (31) comprises a base (311), a driving part (312) and a sliding block (313), the base (311) is arranged to extend along the extending direction of the base (1), the base (311) is provided with a guide rail, the sliding block (313) is slidingly connected to the guide rail and connected with the connecting member (32), the driving part (312) can drive the sliding block (313) to slide and drive the connecting member (32) to move, and the connecting member (32) drives the air blowing assembly (2) to slide relative to the base (1).

8. The protective gas purging mechanism of claim 2, wherein, Respective opposite ends of the side, away from the base (1), of the air blowing plate (11) are provided with a limiting groove, and respective ends of the air blowing member (21), close to the air blowing plate (11), are provided with a limiting protrusion, and each limiting protrusion is limited in each limiting groove.

9. A busbar laser welding apparatus characterized by comprising: The busbar laser welding device comprises the air protection mechanism according to any one of claims 1 to 8.

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