Welding auxiliary structure and welding device

Abstract

The utility model discloses a welding auxiliary structure and a welding device. The welding auxiliary structure comprises a base, a protective sleeve assembly, a first magnetic assembly and a second magnetic assembly. The protective sleeve assembly is connected with the base, a through welding channel is formed in the protective sleeve assembly, and the welding channel is used for allowing laser to pass through; the first magnetic assembly and the second magnetic assembly are arranged on the two opposite sides of the protective sleeve assembly correspondingly and located at the end, away from the base, of the welding channel, the first magnetic assembly and the second magnetic assembly are opposite in magnetism and jointly form an auxiliary magnetic field in the welding channel, so that a molten pool is subjected to Lorentz force conveniently, flowing of the molten pool is slowed down, and welding quality is improved. And more energy is conducted to the welding position, so that the penetration depth is deeper, the high temperature of the molten pool and the large temperature difference generated near the molten pool are avoided, the welding effect is improved, meanwhile, the stirring effect on the molten pool is achieved, grains are refined, and the welding strength is improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to welding device technical field especially, relates to a kind of welding auxiliary structure and welding device. BACKGROUND

[0002] With the development of science and technology, welding device is applied in industry, and the welding device is used to weld multiple batteries and aluminum bars together. The existing welding device includes a base and a protective sleeve. The protective sleeve assembly has a through welding channel for laser to pass through. However, during laser welding, there is a large temperature difference between the molten pool and the surrounding area, which generates thermal current, resulting in poor welding effect of the existing welding device. SUMMARY

[0003] One object of the present utility model is to provide a welding auxiliary structure and welding device, which aims to solve the technical problem of poor welding effect of the existing welding device due to the large temperature difference between the molten pool and the surrounding area during laser welding.

[0004] To achieve the above-mentioned purpose, the utility model provides a kind of scheme: a kind of welding auxiliary structure, comprising:

[0005] a base;

[0006] a protective sleeve assembly connected to the base, the protective sleeve assembly has a through welding channel, and the welding channel is used for laser to pass through; and

[0007] a first magnetic component and a second magnetic component are respectively arranged on opposite sides of the protective sleeve assembly and located at one end of the welding channel away from the base, the magnetic properties of the first magnetic component and the second magnetic component are opposite, and the auxiliary magnetic field is formed in the welding channel.

[0008] Optionally, the first magnetic component and / or the second magnetic component include a housing and a magnetic piece, the housing is connected to the protective sleeve assembly, and the magnetic piece is assembled in the housing and extends to one end of the welding channel away from the base, and the magnetic piece forms the auxiliary magnetic field in the welding channel.

[0009] Optionally, the magnetic piece includes a fixed part and a magnetic part connected to each other, the fixed part has no magnetic property, the magnetic part has magnetic property, the fixed part is assembled in the housing, the magnetic part is located at one end of the welding channel away from the base, and the magnetic part forms the auxiliary magnetic field in the welding channel.

[0010] Optionally, the first magnetic assembly and / or the second magnetic assembly comprises an adjusting member, the adjusting member is connected with the shell and penetrates the shell to abut against the magnetic member.

[0011] Optionally, the magnetic part has a magnetic surface opposite to the radial direction of the welding channel, the magnetic surface is parallel to the axial direction of the welding channel.

[0012] Optionally, the protective sleeve assembly comprises a fixing base, a protective shell, a wind shield and a disturbing member, the fixing base is connected with the base, the protective shell is connected with the fixing base, the protective shell is provided with the welding channel, the wind shield is connected with the fixing base and is spaced apart from the protective shell to form an air duct extending away from the base, the wind shield is provided with an air inlet in communication with the air duct, and the disturbing member is arranged in the air duct and is used to disturb the flow direction of the air.

[0013] Optionally, the disturbing member comprises a first turbulence layer, a second turbulence layer and a third turbulence layer, the first turbulence layer, the second turbulence layer and the third turbulence layer are sequentially and spaced apart arranged along the extension direction of the air duct, and the guide direction of the second turbulence layer is opposite to the guide direction of the first turbulence layer and the third turbulence layer.

[0014] Optionally, the first turbulence layer comprises a plurality of first guide plates, the plurality of first guide plates are spaced apart and inclined towards the extension direction of the air duct, and the spacing between adjacent first guide plates is D1.

[0015] The second turbulence layer comprises a plurality of second guide plates, the plurality of second guide plates are spaced apart and inclined towards the extension direction of the air duct, and the spacing between adjacent second guide plates is D2.

[0016] The third turbulence layer comprises a plurality of third guide plates, the plurality of third guide plates are spaced apart and inclined towards the extension direction of the air duct, and the spacing between adjacent third guide plates is D3.

[0017] Wherein, D2 < D1 < D3.

[0018] Optionally, the first turbulence layer comprises a plurality of first guide plates, the plurality of first guide plates are spaced apart, adjacent first guide plates form a first flow guide channel, the first flow guide channel is inclined towards the extension direction of the air duct, and the spacing gradually decreases; and / or

[0019] The second turbulence layer comprises a plurality of second guide plates, the plurality of second guide plates are spaced apart, adjacent second guide plates form a second flow guide channel, the second flow guide channel is inclined towards the extension direction of the air duct, and the spacing gradually decreases; and / or

[0020] The third spoiler layer comprises a plurality of third guide plates, the plurality of third guide plates are spaced apart from each other, adjacent third guide plates form third guide channels, the third guide channels are inclined towards the extension direction of the air duct, and the spacing gradually decreases.

[0021] To achieve the above object, a welding device is provided in an embodiment of the present application, which comprises a welding machine and a welding auxiliary structure.

[0022] The welding device has the advantages that:

[0023] The welding device has the advantages that: BRIEF DESCRIPTION OF DRAWINGS

[0024] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the drawings needed to be used in the embodiments or the prior art description will be briefly introduced. Obviously, the drawings in the following description are only some embodiments of the present application, and other drawings can be obtained by those skilled in the art without creative labor on the basis of the drawings shown.

[0025] Figure 1 is an assembly structure schematic view of the welding auxiliary structure provided by the embodiment of the present application;

[0026] Figure 2 is a partial assembly structure schematic view of the welding auxiliary structure provided by the embodiment of the present application;

[0027] Figure 3 is a cross-sectional structure schematic view of the welding auxiliary structure provided by the embodiment of the present application;

[0028] Figure 4 is a protective shell and disturbing piece connection structure schematic view of the welding auxiliary structure provided by the embodiment of the present application.

[0029] BRIEF DESCRIPTION OF DRAWINGS

[0030] 100, welding auxiliary structure;

[0031] 10. Base;

[0032] 20. Protective sleeve assembly; 20a. Welding channel; 21. Fixing base; 211. Spring; 22. Protective shell; 23. Windproof cover; 23a. Air duct; 23b. Air inlet; 24. Disruptor; 241. First turbulence layer; 2411. First guide plate; 2411a. First airflow channel; 242. Second turbulence layer; 2421. Second guide plate; 2421a. Second airflow channel; 243. Third turbulence layer; 2431. Third guide plate; 2431a. Third airflow channel;

[0033] 30. First magnetic component; 31. Housing; 32. Magnetic element; 321. Fixing part; 322. Magnetic part; 3221. Magnetic surface;

[0034] 40. Second magnetic component;

[0035] 50. Adjustment components. Detailed Implementation

[0036] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0037] Please refer to the attached document. Figures 1-4 This application provides an application to a welding auxiliary structure 100, which generates a magnetic field, subjecting the molten pool to a Lorentz force and slowing down the flow of the molten pool.

[0038] Please refer to the attached document. Figures 1-3 In this application, the welding auxiliary structure 100 includes a base 10, a protective sleeve assembly 20, a first magnetic assembly 30, and a second magnetic assembly 40. The protective sleeve assembly 20 is connected to the base 10 and has a through welding channel 20a for laser transmission. The first magnetic assembly 30 and the second magnetic assembly 40 are respectively disposed on opposite sides of the protective sleeve assembly 20 and located at the end of the welding channel 20a furthest from the base 10. The first magnetic assembly 30 and the second magnetic assembly 40 have opposite magnetic properties and together form an auxiliary magnetic field in the welding channel 20a. This facilitates the Lorentz force on the molten pool, slows down the molten pool flow, and allows more energy to be conducted to the weld, thus facilitating deeper weld penetration, avoiding high molten pool temperature and large temperature differences near the molten pool, improving the welding effect, and simultaneously having a stirring effect on the molten pool, refining the grains, and improving the welding strength.

[0039] Please refer to the accompanying drawings Figure 2 In the embodiment of the present application, the base 10 is used as a supporting component of the welding auxiliary structure 100, and the base 10 is used to support the protective sleeve assembly 20, the first magnetic assembly 30 and the second magnetic assembly 40.

[0040] Please refer to the accompanying drawings Figures 2-3 In the embodiment of the present application, the protective sleeve assembly 20 is arranged on the inner side of the base 10, and the protective sleeve assembly 20 is connected with the base 10. The protective sleeve assembly 20 is provided with a through welding channel 20a for the laser to pass through. In this way, the laser is output through the welding channel 20a towards the welding position between the plurality of batteries and the aluminum row, so as to realize welding on the welding position between the plurality of batteries and the aluminum row.

[0041] Please refer to the accompanying drawings Figures 2-3 In the embodiment of the present application, the first magnetic assembly 30 and the second magnetic assembly 40 are arranged on opposite sides of the protective sleeve assembly 20 respectively. And located at one end of the welding channel 20a away from the base 10, the magnetic properties of the first magnetic assembly 30 and the second magnetic assembly 40 are opposite, and the auxiliary magnetic field is formed in the welding channel 20a. Thus, the molten pool is subjected to the Lorentz force, the flow of the molten pool is slowed down, more energy is conducted to the welding position, so as to facilitate deeper penetration, avoid large temperature difference between the molten pool and the position near the molten pool, and improve the welding effect. At the same time, the molten pool is stirred, the grain is refined, and the welding strength is improved.

[0042] Specifically, during the welding process, a large temperature difference is generated between the molten pool and the position near the molten pool, and then a thermal current is generated. The first magnetic assembly 30 is a south pole, and the second magnetic assembly 40 is a north pole, so the auxiliary magnetic field generated by the first magnetic assembly 30 and the second magnetic assembly 40 is applied near the welding surface. The molten pool is subjected to the Lorentz force, the flow speed of the molten pool is slowed down, more energy is conducted to the welding position, the penetration is effectively improved. At the same time, the molten pool is stirred, the grain is refined, and the welding strength is improved.

[0043] Please refer to the accompanying drawings Figures 2-3, the first magnetic assembly 30 and / or the second magnetic assembly 40 comprises a shell 31 and a magnetic piece 32, the shell 31 is arranged outside the protective sleeve assembly 20, and the shell 31 is connected with the protective sleeve assembly 20. The magnetic piece 32 is between the shell 31 and the protective sleeve assembly 20, the magnetic piece 32 is assembled in the shell 31 and extends to one end of the welding channel 20a away from the base 10. So that the shell 31 covers part of the magnetic piece 32, the covered part of the magnetic piece 32 has no magnetism, so that the shell 31 plays a role of fixing and shielding the magnetic piece 32. The magnetic piece 32 of the first magnetic assembly 30 is a south pole, and the magnetic piece 32 of the second magnetic assembly 40 is a north pole. The magnetic piece 32 forms an auxiliary magnetic field in the welding channel 20a. So that the molten pool is subjected to the Lorentz force, the molten pool flow slows down, more energy is conducted to the welding position, so that the penetration is deeper, the high temperature of the molten pool and the large temperature difference between the position near the molten pool are avoided, and the welding effect is improved. At the same time, it has a stirring effect on the molten pool, refines the grain, and improves the welding strength.

[0044] Please refer to the accompanying drawings Figures 2-3 , the magnetic piece 32 comprises a fixed part 321 and a magnetic part 322 connected with each other, the fixed part 321 is arranged on the upper side of the magnetic part 322, and the fixed part 321 has no magnetism. Avoid the impact of parts with magnetic effect arranged relative to the fixed part 321, prevent affecting the normal work of other parts. The magnetic part 322 has magnetism, the fixed part 321 is assembled in the shell 31, and the magnetic part 322 is located at one end of the welding channel 20a away from the base 10, so as to prevent the shell 31 from affecting the magnetic effect of the magnetic part 322. The magnetic part 322 forms an auxiliary magnetic field in the welding channel 20a. So that the molten pool is subjected to the Lorentz force, the molten pool flow slows down, more energy is conducted to the welding position, so that the penetration is deeper, the high temperature of the molten pool and the large temperature difference between the position near the molten pool are avoided, and the welding effect is improved. At the same time, it has a stirring effect on the molten pool, refines the grain, and improves the welding strength. To realize the local magnetism of the magnetic piece 32, save the manufacturing cost of the magnetic piece 32.

[0045] Please refer to the accompanying drawings Figures 2-3 , the first magnetic assembly 30 and / or the second magnetic assembly 40 comprises an adjusting piece 50, the adjusting piece 50 is arranged outside the shell 31, and the adjusting piece 50 is detachably connected with the shell 31, so that the adjusting piece 50 can be connected with or separated from the shell 31. The adjusting piece 50 is screw-connected with the shell 31 and abuts against the magnetic piece 32 through the shell 31, so as to limit the position of the magnetic piece 32 and ensure the position of the magnetic piece 32 relative to the shell 31. When the adjusting piece 50 is separated from the shell 31, the magnetic piece 32 is away from the adjusting piece 50, so that the position of the magnetic piece 32 relative to the shell 31 can be adjusted, and the up-down position of the magnetic piece 32 is adjusted. Optionally, the adjusting piece 50 is a bolt.

[0046] Please refer to the accompanying drawingsFigure 3 The magnetic part 322 has a magnetic surface 3221 opposite to the radial direction of the welding channel 20a, and the magnetic surface 3221 is parallel to the axial direction of the welding channel 20a to form a partially parallel magnetic field, and the magnetic field is parallel to the radial direction. The molten pool subjected to the partially parallel magnetic field can reduce the moving speed, more energy is conducted to the welding surface, which can effectively improve the welding penetration and welding effect.

[0047] Please refer to the accompanying drawings Figures 2-3 The protective sleeve assembly 20 comprises a fixing base 21, a protective shell 22, a wind shield 23 and a disturbing piece 24. The fixing base 21 is connected with the base 10, so that the protective sleeve assembly 20 is connected with the base 10 through the fixing base 21. A spring 211 is arranged between the fixing base 21 and the base 10, and the two ends of the spring 211 are connected with the fixing base 21 and the base 10 respectively, so that the fixing base 21 can be elastically lifted relative to the base 10. The protective shell 22 is connected with the fixing base 21, and the protective shell 22 is provided with a welding channel 20a, so that the protective shell 22 can be lifted with the fixing base 21, thereby buffering when the protective shell 22 approaches the welding surface. The wind shield 23 is connected with the fixing base 21 and is spaced from the protective shell 22 to form an air duct 23a extending away from the base 10. The wind shield 23 is provided with an air inlet 23b communicating with the air duct 23a, so that the air flows into the air duct 23a through the air inlet 23b, thereby outputting the air in the air duct 23a to the welding surface to achieve heat dissipation of the welding surface. The disturbing piece 24 is arranged in the air duct 23a, and the disturbing piece 24 is used for disturbing the flow direction of the air, so that the air in the air duct 23a is dispersed through the disturbing piece 24, thereby uniformly outputting the air in the air duct 23a to the welding surface, ensuring the uniformity of the air flow velocity of the welding surface. The distance between the two ends of the welding surface and the outlet of the air duct 23a is different, which causes the flow velocity of the air flowing to the two ends of the welding surface to be different, thereby causing the temperature of the two ends of the welding surface to be inconsistent, and also avoiding the influence of the inconsistent flow velocity of the air on the weld effect, thereby improving the welding quality.

[0048] Please refer to the accompanying drawings Figures 3-4 The disturbing piece 24 comprises a first disturbing layer 241, a second disturbing layer 242 and a third disturbing layer 243, which are sequentially and spaced arranged along the extension direction of the air duct 23a, so that the air sequentially flows through the first disturbing layer 241, the second disturbing layer 242 and the third disturbing layer 243 to the welding surface. The guide direction of the second disturbing layer 242 is opposite to that of the first disturbing layer 241 and the third disturbing layer 243, so that the air sequentially changes the flow direction through the first disturbing layer 241, the second disturbing layer 242 and the third disturbing layer 243 to achieve dispersion of the air. The air flows from the lower left through the first disturbing layer 241, the air in the first disturbing layer 241 flows from the lower right through the second disturbing layer 242, and the air in the second disturbing layer 242 flows from the lower left through the third disturbing layer 243.

[0049] Please refer to the attached drawings Figure 4 The first turbulence layer 241 comprises a plurality of first guide plates 2411 which are spaced apart from each other and inclined to the extension direction of the air duct 23a. The wind from the external environment flows under the guidance of the plurality of first guide plates 2411, so as to ensure the flow direction of the wind in the first turbulence layer 241. The spacing between adjacent first guide plates 2411 is D1.

[0050] Please refer to the attached drawings Figure 4 The second turbulence layer 242 comprises a plurality of second guide plates 2421 which are spaced apart from each other and inclined to the extension direction of the air duct 23a. The wind output by the first turbulence layer 241 flows under the guidance of the plurality of second guide plates 2421, so as to ensure the flow direction of the wind in the second turbulence layer 242. The spacing between adjacent second guide plates 2421 is D2.

[0051] Please refer to the attached drawings Figure 4 The third turbulence layer 243 comprises a plurality of third guide plates 2431 which are spaced apart from each other and inclined to the extension direction of the air duct 23a. The wind output by the second turbulence layer 242 flows under the guidance of the plurality of third guide plates 2431, so as to ensure the flow direction of the wind in the third turbulence layer 243. The spacing between adjacent third guide plates 2431 is D3.

[0052] Wherein, D2 < D1 < D3, the flow rate of the wind in the first guide plate 2411 is V1, the flow rate of the wind in the second guide plate 2421 is V2, and the flow rate of the wind in the third guide plate 2431 is V3, so as to facilitate V3 < V1 < V2, so that the wind flowing from the plurality of first guide plates 2411 to the plurality of second guide plates 2421 becomes larger, and the wind flowing from the plurality of second guide plates 2421 to the plurality of third guide plates 2431 becomes smaller, so as to realize the adjustment of the flow rate of the wind by the spacing.

[0053] Please refer to the attached drawings Figure 4 The first turbulence layer 241 comprises a plurality of first guide plates 2411 which are spaced apart from each other, and adjacent first guide plates 2411 form a first guide channel 2411a, so as to facilitate the wind from the external environment to flow along the first guide channel 2411a, and ensure the smoothness of the flow of the wind. The first guide channel 2411a is inclined to the extension direction of the air duct 23a, and the spacing gradually decreases; the smaller the spacing, the greater the flow rate, so as to gradually accelerate the wind flowing from top to bottom in the first guide channel 2411a.

[0054] Please refer to the attached drawings Figure 4The second turbulence layer 242 comprises a plurality of second guide plates 2421 which are spaced apart from each other, and adjacent second guide plates 2421 form a second guide channel 2421a so as to facilitate the wind output by the plurality of first guide plates 2411 to flow along the second guide channel 2421a, and the smoothness of the wind flow is ensured.

[0055] Please refer to the accompanying drawings Figure 4 The third turbulence layer 243 comprises a plurality of third guide plates 2431 which are spaced apart from each other, and adjacent third guide plates 2431 form a third guide channel 2431a so as to facilitate the wind output by the plurality of second guide plates 2421 to flow along the third guide channel 2431a, and the smoothness of the wind flow is ensured.

[0056] The first guide channel 2411a, the second guide channel 2421a and the third guide channel 2431a are sequentially communicated so as to facilitate the wind to sequentially pass through the first guide channel 2411a, the second guide channel 2421a and the third guide channel 2431a, and the extension directions of the first guide channel 2411a, the second guide channel 2421a and the third guide channel 2431a are opposite so as to facilitate the wind to change the direction every time passing through the next guide channel, and the dispersion of the wind is realized.

[0057] In another embodiment, a welding device, the welding device comprises a welding machine and a welding auxiliary structure 100, the welding machine releases laser towards a welding channel 20a in the welding auxiliary structure 100, so that the laser released by the welding machine flows to the welding position through the welding channel 20a in the welding auxiliary structure 100, an auxiliary magnetic field is formed in the welding channel 20a, so that the molten pool is subjected to the Lorentz force, the flow of the molten pool is slowed down, more energy is conducted to the welding position, so that the penetration is deeper, the high temperature of the molten pool and the great temperature difference of the position near the molten pool are avoided, the welding effect is improved, and the molten pool has a stirring effect, the grain is refined, and the welding strength is improved.

[0058] The beneficial effects of the utility model lie in:

[0059] The utility model provides a kind of welding auxiliary structure 100 and welding device applied to, protective sleeve assembly 20 is connected with base 10, and protective sleeve assembly 20 is equipped with the through welding channel 20a, and welding channel 20a is used for passing through laser;First magnetic component 30 and second magnetic component 40 are respectively arranged on the opposite sides of protective sleeve assembly 20, and located at the end of welding channel 20a away from base 10, and the magnetism of first magnetic component 30 and second magnetic component 40 is opposite, and auxiliary magnetic field is formed in welding channel 20a, so that molten pool is subjected to Lorentz force, and molten pool flow slows down, so that more energy is conducted to welding, so as to facilitate deeper penetration, avoid that molten pool high temperature and molten pool near position produce very big temperature difference, improve welding effect, while having stirring effect to molten pool, refine grain, improve welding strength.

[0060] It should be noted that all directional indications (such as up, down, left, right, front, back, etc.) in the embodiments of the utility model are only used to explain the relative position relationship, movement condition and the like between components in a certain specific posture, and if the specific posture changes, the directional indications also change accordingly.

[0061] It should also be noted that when an element is referred to as being "fixed to" or "set on" another element, it can be directly on the other element or can have a centering element therebetween. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or can be indirectly connected to the other element through a centering element.

[0062] In addition, the description of "first", "second" and the like in the utility model is only for the purpose of description, 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", "second" can explicitly or implicitly include at least one of the features. In addition, the technical solutions of each embodiment can be combined with each other, but it must be based on the realization of ordinary skilled in the art, 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 utility model.

[0063] The above is only the preferred embodiment 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 contents of the drawings, or direct / indirect application in other related technical fields under the inventive concept of the utility model are included in the patent protection range of the utility model.

Claims

1. A welding aid structure, characterized by, The welding auxiliary structure comprises a base, a protective sleeve assembly connected with the base, a through welding channel formed in the protective sleeve assembly for laser passing, and a first magnetic assembly and a second magnetic assembly arranged on opposite sides of the protective sleeve assembly and located at an end of the welding channel away from the base, wherein the first magnetic assembly and the second magnetic assembly are opposite in magnetism and jointly form an auxiliary magnetic field in the welding channel. The first magnetic assembly and / or the second magnetic assembly comprises a shell connected with the protective sleeve assembly and a magnetic piece assembled in the shell and extending to the end of the welding channel away from the base, wherein the magnetic piece forms the auxiliary magnetic field in the welding channel. The magnetic piece comprises a fixed part and a magnetic part connected with each other, wherein the fixed part has no magnetism, the magnetic part has magnetism, the fixed part is assembled in the shell, the magnetic part is located at the end of the welding channel away from the base, and the magnetic part forms the auxiliary magnetic field in the welding channel. The first magnetic assembly and / or the second magnetic assembly comprises an adjusting piece connected with the shell and penetrating the shell to abut against the magnetic piece.

2. The welding aid structure of claim 1, wherein, The magnetic part has a magnetic surface opposite to the radial direction of the welding channel, and the magnetic surface is parallel to the axial direction of the welding channel.

3. The welding aid structure of claim 2, wherein, The protective sleeve assembly comprises a fixing seat connected with the base, a protective shell connected with the fixing seat, a protective cover connected with the fixing seat and spaced apart from the protective shell to form an air duct extending away from the base, and a disturbing piece arranged in the air duct.

4. The welding aid structure of claim 2, wherein, The disturbing piece comprises a first disturbing layer, a second disturbing layer and a third disturbing layer, wherein the first disturbing layer, the second disturbing layer and the third disturbing layer are sequentially and spaced apart arranged along the extension direction of the air duct, and the guide direction of the second disturbing layer is opposite to the guide direction of the first disturbing layer and the third disturbing layer.

5. The welding aid structure of claim 3, wherein, The first disturbing layer comprises a plurality of first guide plates, wherein the plurality of first guide plates are spaced apart and inclined towards the extension direction of the air duct, and the spacing between adjacent first guide plates is D1.

6. The welding aid structure according to any one of claims 1 to 5, characterized in that The second disturbing layer comprises a plurality of second guide plates, wherein the plurality of second guide plates are spaced apart and inclined towards the extension direction of the air duct, and the spacing between adjacent second guide plates is D2.

7. The welding aid structure of claim 6, wherein, The third disturbing layer comprises a plurality of third guide plates, wherein the plurality of third guide plates are spaced apart and inclined towards the extension direction of the air duct, and the spacing between adjacent third guide plates is D3.

8. The welding aid structure of claim 7, wherein, D2 < D1 < D3.

9. The welding auxiliary structure according to claim 7, wherein the first disturbing layer comprises a plurality of first guide plates, wherein the plurality of first guide plates are spaced apart, adjacent first guide plates form a first guide channel, the first guide channel is inclined towards the extension direction of the air duct, and the spacing gradually decreases; and / or ​ ​ ​ The second spoiler layer comprises a plurality of second guide plates, the plurality of second guide plates are spaced apart from each other, adjacent second guide plates form a second guide channel, the second guide channel is inclined towards the extension direction of the air duct, and the spacing gradually decreases; and / or The third spoiler layer comprises a plurality of third guide plates, the plurality of third guide plates are spaced apart from each other, adjacent third guide plates form a third guide channel, the third guide channel is inclined towards the extension direction of the air duct, and the spacing gradually decreases.

10. A welding device characterized by, The welding device comprises a welding machine and the welding auxiliary structure according to any one of claims 1 to 9, the welding machine releases laser towards the welding channel in the welding auxiliary structure.

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