Welding device, battery manufacturing device, and automobile manufacturing device

Abstract

The present invention provides a welding device capable of minimizing welding defects, and a battery manufacturing device and an automobile manufacturing device including the welding device. The welding device according to one aspect of the present invention includes a laser irradiation module configured to irradiate a laser, a protection module arranged outside the laser irradiation module and configured to block debris scattered from a welded portion, and a blocking module arranged outside the protection module and configured to block the debris from flowing into the protection module by flowing gas therein.

Description

Technical Field

[0001] The present invention relates to a welding apparatus, a battery manufacturing apparatus, and an automobile manufacturing apparatus, and more particularly, to a welding apparatus capable of minimizing welding defects, and a battery manufacturing apparatus and an automobile manufacturing apparatus including such a welding apparatus.

[0002] This application claims priority based on Korean Patent Application No. 10-2022-0084678 filed on July 8, 2022, and Korean Patent Application No. 10-2022-0145485 filed on November 3, 2022, and all of the contents disclosed in the specifications and drawings of the applications are incorporated into this application.

Background Art

[0003] Generally, a welding apparatus includes a laser light source and optical components such as a focusing lens for increasing the energy density of the laser irradiated from the laser light source. In addition, in the case of the welding apparatus, a protective glass is included to prevent damage and contamination of the optical components by spatter and fume, which are by-products generated during welding.

[0004] Such a welding apparatus can be used, for example, for joining components constituting a battery module. As an example, a battery module can be configured by stacking or laminating a plurality of battery cells (e.g., secondary batteries) in a state where they are mounted on their own or in a cartridge or the like so as to provide a high voltage and a high current, and then electrically connecting them to form a dense structure.

[0005] In such a battery module, in order to configure a battery module having a stable structure, it is important that welding between a module case in which battery cells are accommodated and an end plate configured to cover a bus bar for electrically connecting the battery cells is performed well. As an example, a welding apparatus for welding a keyhole between a module case and an end plate can be configured.

[0006] On the other hand, in the case of a conventional welding apparatus, there is a drawback that it is difficult to effectively block the inflow of spatter and fume generated during welding into the direction of the protective glass. As a result, there is a risk that spatter and fume adhere to the surface of the protective glass, contaminating the protective glass. In this case, there is a problem that the transmittance of the laser irradiated from the optical component to the welding part through the protective glass decreases, resulting in welding defects. Summary of the Invention Problems to be Solved by the Invention

[0007] The present invention has been made to solve the above-described problems, and an object thereof is to provide a welding apparatus capable of minimizing welding defects, a battery manufacturing apparatus including such a welding apparatus, and an automobile manufacturing apparatus.

[0008] However, the technical problems to be solved by the present invention are not limited to the above-described problems, and other problems not mentioned will be clearly understood by those skilled in the art from the description of the invention described below. Means for Solving the Problems

[0009] A welding apparatus according to an aspect of the present invention includes a laser irradiation module configured to irradiate a laser, a protection module disposed outside the laser irradiation module and configured to block scattered matter scattered from a welding part, and a blocking module disposed outside the protection module and configured to block the inflow of gas into the inside and the inflow of the scattered matter to the protection module side.

[0010] Desirably, the blocking module may be configured such that a vortex is formed by the gas flowing into the inside.

[0011] Desirably, the blocking module may be configured such that the vortex is formed along the circumferential direction inside the blocking module.

[0012] Preferably, the cutoff module may be configured such that the eddy current is formed in a state of contacting the lower surface of the protection module.

[0013] Preferably, the cutoff module includes a body, and the body may include a guide portion configured to guide the inflow of gas into the body.

[0014] Preferably, the guide portion includes an inclined portion formed to incline upward in the direction of the protection module on the outer peripheral surface of the body, and a cutout portion connected to an end adjacent to the protection module at the inclined portion, the cutout portion being configured to guide the flow of gas from the outer peripheral surface of the body to the inner peripheral surface side of the body.

[0015] Preferably, the cutout portion may include a first portion configured to face the inner peripheral surface side of the body and a second portion configured to face the outer peripheral surface side of the body.

[0016] Preferably, the distance between the first portion and the second portion may be configured to become smaller as it goes toward the inner peripheral surface side of the body.

[0017] Preferably, the cutoff module may further include a chamber that houses the body therein, the chamber having a gas inlet hole configured to allow gas to flow into the inclined portion.

[0018] Preferably, the body further includes a gas inlet channel formed along the circumferential direction of the outer peripheral surface of the body and connected to an end of the inclined portion, and the gas inlet channel may be configured to communicate with the gas inlet hole.

[0019] Preferably, a plurality of the guide portions may be configured to be formed along the outer peripheral surface of the body.

[0020] Preferably, the guide part may be configured to incline in one side direction along the outer peripheral surface of the body.

[0021] Preferably, the welding device may further include a gas ejection module provided below the cutoff module and configured to eject gas in a direction perpendicular to the irradiation direction of the laser.

[0022] Preferably, the welding device may further include a spatter cutoff member provided outside the cutoff module and configured to cutoff the inflow of the spatter toward the cutoff module side.

[0023] Preferably, the spatter cutoff member may be configured such that the inner diameter becomes thinner as it goes toward the welding part side.

[0024] Preferably, the spatter cutoff member may include a filter configured to filter the spatter on a side surface.

[0025] A battery manufacturing apparatus according to an aspect of the present invention may include a welding device according to an aspect of the present invention as described above.

[0026] An automobile manufacturing apparatus according to an aspect of the present invention may include a welding device according to an aspect of the present invention as described above.

Advantages of the Invention

[0027] According to an embodiment of the present invention, by suppressing the inflow of spatter into the protection module by the cutoff module capable of allowing gas to flow into the inside, it is possible to prevent the protection part of the protection module from being contaminated by the spatter. As a result, by preventing a decrease in the transmittance in the protection module of the laser irradiated to the welding part, it is possible to minimize the occurrence of welding defects at the welding part.

[0028] Furthermore, various additional effects can be achieved by various embodiments of the present invention. Such various effects of the present invention will be described in detail in each embodiment, or the description will be omitted for effects that can be easily understood by those skilled in the art.

[0029] The following drawings attached to this specification illustrate desirable embodiments of the present invention and serve to further understand the technical idea of the present invention together with the detailed description of the invention. Therefore, the present invention should not be construed as being limited only to the matters described in the drawings.

Brief Description of the Drawings

[0030]

Figure 1

Figure 2

Figure 3

Figure 4

Figure 5

Figure 6

Figure 7

Figure 8

Figure 9

Modes for Carrying Out the Invention

[0031] Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings. Prior to this, the terms and words used in this specification and the claims are not to be construed as being limited to ordinary and dictionary meanings, but rather, in accordance with the principle that the inventor himself / herself can appropriately define the concept of the terms in order to explain the invention in the best way, they are to be construed in accordance with the meanings and concepts corresponding to the technical idea of the present invention.

[0032] FIGS. 1 and 2 are diagrams showing a welding apparatus 10 according to an embodiment of the present invention, FIG. 3 is an exploded perspective view of the welding apparatus 10 of FIG. 1, and FIG. 4 is a diagram showing the detailed structure of the welding apparatus 10 of FIG. 1. At this time, the illustration of the welding part W described later in FIGS. 3 and 4 is omitted.

[0033] In an embodiment of the present invention, the X-axis direction shown in the drawings may mean the left-right direction of the welding apparatus 10, the Y-axis direction may mean the front-rear direction of the welding apparatus 10 perpendicular to the X-axis direction on the horizontal plane (XY plane), and the Z-axis direction may mean the up-down direction perpendicular to both the X-axis direction and the Y-axis direction. At this time, the Z-axis direction may mean the irradiation direction of the laser by the laser irradiation module 100 described later.

[0034] Referring to FIGS. 1 to 4, the welding apparatus 10 according to an embodiment of the present invention may be a configuration for irradiating a laser to perform welding at the welding part W.

[0035] The welding part W may, as an example, mean a joint between components of a battery module (not shown). At this time, the battery module may include at least one secondary battery inside.

[0036] As an example, the welding between the components of the battery module can be performed by a known key hole welding method. More specifically, the welding apparatus 10 can perform welding between a module case (not shown) and an end plate (not shown) of a battery module for housing a secondary battery inside, but is not limited thereto.

[0037] The welding device 10 can include a laser irradiation module 100, a protection module 200, and a blocking module 300.

[0038] The laser irradiation module 100 can be configured in the form of an optical system so as to irradiate a laser. Although not shown in detail, the laser can be irradiated in the form of a beam onto the welding part W.

[0039] In one embodiment, the laser irradiation module 100 can include a laser light source (not shown) and a focusing lens (not shown).

[0040] The laser light source can generate the laser.

[0041] The focusing lens can improve the energy density of the laser generated by the laser light source. At this time, the laser can pass through the focusing lens and be irradiated onto the welding part W.

[0042] The protection module 200 can be disposed outside the laser irradiation module 100 and can be configured to block scattered matter scattered from the welding part W. Here, the outside can mean the side approaching the welding part W. In one embodiment, the protection module 200 can be disposed below the laser irradiation module 100. Also, the scattered matter can be spatter or fume, which are processing by-products that can be generated from the welding part W during welding.

[0043] In particular, the protection module 200 can include a protection part 210 and a protection frame 220.

[0044] The protection part 210 can transmit the laser irradiated from the laser irradiation module 100 to the welding part W side. Also, the protection part 210 can be configured to block scattered matter scattered from the welding part W. As an example, the protection part 210 can be made of glass, transparent plastic, or the like.

[0045] The protective frame 220 can be configured to support the protection part 210. Specifically, the protection part 210 can be attached to a groove formed at approximately the center of the protective frame 220. As an example, the protective frame 220 can include, but is not limited to, a plastic material with excellent abrasion resistance.

[0046] On the other hand, the laser irradiation module 100 and the protection module 200 can be arranged side by side in the vertical direction (Z-axis direction) by a separate support member H.

[0047] Specifically, the laser irradiation module 100 can be coupled to the upper part of the support member H. Further, the protective frame 220 can be inserted into an insertion port I formed in the support member H in the form of a cartridge in the front-rear direction (Y-axis direction) of the welding device 10 so as to be easily replaceable. At this time, the insertion port I can be located below the coupling part between the laser irradiation module 100 and the support member H.

[0048] The blocking module 300 can be arranged outside the protection module 200. Further, gas (e.g., air) can flow into the inside of the blocking module 300 to block the inflow of flying objects to the protection module 200 side. As an example, the overall shape of the blocking module 300 can be configured in a cylindrical shape with a hollow formed inside. Further, the blocking module 300 is arranged at the lower part of the support member H, and the welding part W can be arranged at the lower part of the blocking module 300.

[0049] In one embodiment, the blocking module 300 can include, but is not limited to, a plastic material with excellent abrasion resistance.

[0050] That is, the welding device 10 according to the present invention can allow gas to flow into the inside of the blocking module 300 located outside (e.g., at the lower part) of the protection module 200. Thereby, the welding device 10 according to the present invention can be configured such that the inside of the blocking module 300 has a pressure greater than the atmospheric pressure due to the flow of the gas inside the blocking module 300.

[0051] In this case, it is possible to suppress the scattered matter scattered from the welded portion W from flowing into the protection module 200 side by the blocking module 300.

[0052] According to such an embodiment of the present invention, the blocking module 300 capable of allowing gas to flow into the interior suppresses the scattered matter from flowing into the protection module 200, thereby preventing the protection portion 210 of the protection module 200 from being contaminated by the scattered matter. As a result, by preventing a decrease in the transmittance in the protection module 200 of the laser irradiated to the welded portion W, it is possible to minimize the occurrence of welding defects in the welded portion W.

[0053] FIGS. 5 and 6 are diagrams showing the detailed structure of the blocking module 300 provided in the welding apparatus 10 of FIG. 1, and FIGS. 7 and 8 are diagrams showing a state in which the scattered matter is blocked by the blocking module 300 provided in the welding apparatus 10 of FIG. 1. At this time, the scattered matter described above in FIGS. 7 and 8 is denoted by the reference sign "S".

[0054] Referring to FIGS. 5 to 8, the blocking module 300 may be configured such that a vortex flow is formed by the gas flowing into the interior.

[0055] That is, the gas flowing into the interior of the blocking module 300 may form a vortex flow inside the cylindrical blocking module 300. As a result, the interior of the blocking module 300 can more reliably have a pressure greater than the atmospheric pressure.

[0056] According to such an embodiment, it is possible to surely suppress the scattered matter from flowing into the protection module 200.

[0057] In particular, as shown in FIG. 7, the blocking module 300 may be configured such that a vortex flow is formed along the circumferential direction inside the blocking module 300. For example, when the blocking module 300 is viewed from above, a counterclockwise vortex flow may be formed inside the blocking module 300.

[0058] That is, the gas flowing into the inside of the blocking module 300 can form a vortex along the circumferential direction inside the cylindrical blocking module 300. As a result, a gas film having a substantially circular area can be formed as a blocking layer inside the blocking module 300 by the formed vortex.

[0059] According to such an embodiment, it is possible to suppress the scattered matter from passing in the direction of the protection module 200 throughout the inside of the blocking module 300.

[0060] In one embodiment, as shown in FIG. 8, the blocking module 300 can also be configured such that a vortex is formed in a state of being in contact with the lower surface of the protection module 200. More specifically, the vortex can be formed in a state of being in contact with the lower surface of the protection part 210. That is, a part of the gas forming a vortex along the circumferential direction inside the cylindrical blocking module 300 can also flow into the direction of the protection module 200 and form a vortex in a state of being in contact with the lower surface of the protection module 200.

[0061] According to such an embodiment, since the vortex formed by the gas flowing into the inside of the blocking module 300 blocks the inflow of scattered matter in a state of being adjacent to and / or in contact with the protection module 200, it is possible to more reliably suppress the scattered matter from flowing into the protection module 200.

[0062] Referring to FIGS. 3 to 8 again, the blocking module 300 can include a body 310.

[0063] The body 310 can be configured in a substantially cylindrical shape. Such a body 310 can include a guide part 312.

[0064] The guide part 312 can be configured to guide the inflow of gas into the body 310. Such a guide part 312 can be provided on the outer peripheral surface of the body 310.

[0065] That is, the guide portion 312 of the present invention can guide the formation of a vortex inside the cylindrical body 310 by allowing gas to flow into the inside of the body 310. As a result, the inside of the body 310 can more surely have a pressure greater than atmospheric pressure.

[0066] According to such an embodiment, it is possible to surely suppress the inflow of flying objects into the protection module 200.

[0067] Specifically, the guide portion 312 can include an inclined portion 312a and a cutout portion 312b.

[0068] The inclined portion 312a can be formed to incline upward in the direction of the protection module 200 on the outer peripheral surface of the body 310. Specifically, the inclined portion 312a can be configured to incline on the left side and / or the right side from the lower part to the upper part on the outer peripheral surface of the body 310.

[0069] The cutout portion 312b can be connected to an end portion adjacent to the protection module 200 at the inclined portion 312a. Further, the cutout portion 312b can be configured to guide the flow of gas from the outer peripheral surface of the body 310 toward the inner peripheral surface side of the body 310. In particular, the cutout portion 312b can mean a portion where at least a part of the body 310 is cut out. That is, the cutout portion 312b can be configured to penetrate at least a part of the body 310 in the inner and outer directions.

[0070] That is, the inclined portion 312a can guide the flow of gas to the protection module 200 side on the outer peripheral surface of the body 310. Further, the cutout portion 312b can guide the gas guided to the protection module 200 side by the inclined portion 312a to the inside of the body 310.

[0071] At this time, the gas flowing into the inside of the blocking module 300 can form a vortex in a state of being adjacent to and / or in contact with the protection module 200.

[0072] According to such an embodiment, not only can the gas flow inside the body 310 be easily guided, but it is also possible to more reliably suppress the inflow of flying objects into the protection module 200.

[0073] More specifically, the incision 312b can include a first portion 312b1 and a second portion 312b2.

[0074] The first portion 312b1 can be configured to face the inner circumferential surface side of the body 310. Also, the second portion 312b2 can be configured to face the outer circumferential surface side of the body 310.

[0075] That is, according to the present invention, the first portion 312b1, which is a part of the incision 312b, and the second portion 312b2, which is another part of the incision 312b, can be configured to face opposite sides. With such a configuration, a predetermined space through which gas can flow can be formed between the first portion 312b1 and the second portion 312b2 along the circumferential direction.

[0076] According to such an embodiment, the gas guided on the outer circumferential surface of the body 310 by the inclined portion 312a can surely flow into the inside of the body 310 without flowing out to other parts of the body 310 through the space between the first portion 312b1 and the second portion 312b2.

[0077] Referring to FIG. 7 again, the interval between the first portion 312b1 and the second portion 312b2 can be configured to become smaller as it goes toward the inner circumferential surface side of the body 310. At this time, the interval between the first portion 312b1 and the second portion 312b2 can mean the interval in the radial direction of the body 310.

[0078] Thereby, the flow velocity of the gas flowing into the inside of the body 310 can become faster than the flow velocity of the gas at the inclined portion 312a.

[0079] According to such an embodiment, a stronger vortex can be formed inside the body 310 by the gas flowing into the inside of the body 310. Thereby, it is possible to more reliably suppress the inflow of flying objects into the protection module 200.

[0080] Referring again to FIGS. 3 to 8, the guide portions 312 may be configured to be formed in plurality along the outer peripheral surface of the body 310. At this time, six guide portions 312 may be configured along the circumferential direction of the body 310, but the present invention is not limited thereto.

[0081] That is, by forming a plurality of guide portions 312 along the outer peripheral surface of the body 310 in the circumferential direction, the gas can be guided to form a vortex along the circumferential direction inside the cylindrical body 310. Thereby, a gas film having a substantially circular area may be formed inside the body 310 by the formed vortex.

[0082] According to such an embodiment, it is possible to suppress the passage of flying objects in the direction of the protection module 200 throughout the inside of the body 310. Further, in this case, the flow of the vortex inside the body 310 can be formed stronger. Thereby, the effect of blocking flying objects by the vortex can be further improved.

[0083] In particular, the guide portion 312 may be configured to incline in one side direction along the outer peripheral surface of the body 310.

[0084] That is, in the present embodiment, at least one guide portion 312 may be configured to incline along the outer peripheral surface of the body 310 in the circumferential direction. At this time, the directions in which the plurality of guide portions 312 incline in the circumferential direction of the body 310 can be configured to be the same as or different from each other. For example, the inclined portion 312a of the guide portion 312 may be configured to incline in the right side direction as it goes in the upper direction.

[0085] With such a configuration, by imparting a direction to the flow of the gas flowing into the interior of the body 310, a vortex of the gas within the body 310 can be more reliably generated.

[0086] Referring again to FIGS. 3 to 8, the blocking module 300 can further include a chamber 320.

[0087] The chamber 320 can be coupled to the above-described support member H by a screw coupling method so as to be easily assembled and replaced.

[0088] Also, the chamber 320 can accommodate the body 310 therein. That is, the chamber 320 can protect the body 310 from external impacts and the like. Also, the chamber 320 can be configured to accommodate the body 310 therein and surround the outer peripheral surface of the body 310. Thereby, the guiding of the gas flow by the inclined portion 312a can be performed more stably.

[0089] Also, the chamber 320 can include a gas inlet hole 322 configured to allow gas to flow into the inclined portion 312a. At this time, a separate nozzle N can be coupled to the gas inlet hole 322 to guide high-pressure compressed gas into the interior of the chamber 320.

[0090] According to such an embodiment, high-pressure gas can be more stably guided into the interior of the body 310.

[0091] Referring again to FIGS. 5 to 8, the body 310 can further include a gas inlet channel 314.

[0092] The gas inlet channel 314 may be formed along the circumferential direction of the outer peripheral surface of the body 310. Further, the gas inlet channel 314 may be connected to the end of the inclined portion 312a. Specifically, the gas inlet channel 314 may be connected to the end of the inclined portion 312a on the side opposite to the portion where the incision 312b is connected. For example, the gas inlet channel 314 may be formed on the lower side of the outer peripheral surface of the body 310. Further, the lower end of the inclined portion 312a may be connected to such a gas inlet channel 314.

[0093] In particular, the gas inlet channel 314 may be configured to communicate with the gas inlet hole 322.

[0094] That is, the gas inlet channel 314 can primarily guide the flow of the gas flowing into the interior of the chamber 320 through the gas inlet hole 322 on the outer peripheral surface of the body 310. Thereby, it is possible to prevent the gas flowing into the chamber 320 from flowing randomly.

[0095] Specifically, the gas flowing into the interior of the chamber 320 may have its flow guided along the circumferential direction of the outer peripheral surface of the body 310 through the gas inlet channel 314. For example, the gas flowing into the interior of the chamber 320 may flow counterclockwise (based on the view from above) along the gas inlet channel 314. Further, the gas flowing along the gas inlet channel 314 may have its flow guided in the direction of the interior of the body 310 along the guide portion 312.

[0096] According to such an embodiment, by imparting directionality to the flow of the high-pressure gas flowing into the chamber 320, the flow of the gas can be induced in the direction of the interior of the body 310. Therefore, the high-pressure gas can be more reliably and stably guided into the interior of the body 310. Further, in this case, the gas inlet channel 314, together with the inclined portion 312a, can more reliably form a vortex flow inside the body 310 by imparting directionality to the gas flow in advance.

[0097] Referring again to FIGS. 1 to 3, the welding apparatus 10 may further include a spatter shielding member 400. Such a spatter shielding member 400 may have a substantially cylindrical shape with a hollow formed therein.

[0098] The spatter shielding member 400 may be provided outside (e.g., below) the shielding module 300 and configured to block the inflow of spatter toward the shielding module 300. Further, the upper portion of the spatter shielding member 400 may be fitted to the lower portion of the chamber 320 of the shielding module 300.

[0099] Thereby, a further separation space can be provided by the spatter shielding member 400 between the shielding module 300 and the welding portion W. Therefore, since the flow of spatter can be weakened by the spatter shielding member 400, the shielding of spatter by the shielding module 300 can be performed more effectively.

[0100] In particular, the spatter shielding member 400 may be configured such that the inner diameter becomes smaller as it goes toward the welding portion W side. That is, the spatter shielding member 400 may be configured such that the inner diameter becomes smaller as it goes downward.

[0101] Therefore, the flow velocity of the spatter flowing through the spatter shielding member 400 can decrease as it goes toward the shielding module 300 side.

[0102] According to such an embodiment, in the further separation space provided by the spatter shielding member 400, the flow of spatter decreases as it goes toward the shielding module 300 side, so that the shielding of spatter by the shielding module 300 can be performed more effectively.

[0103] Further, the spatter shielding member 400 may include a filter F configured to filter spatter on the side surface. As an example, the filter F may be configured in a mesh shape in which a plurality of fine holes are formed.

[0104] Specifically, the side surface of the projectile shielding member 400 can be configured such that a plurality of ribs 410 are formed in the circumferential direction. Further, an opening can be formed between the plurality of ribs 410, and the filter F can be provided in such an opening. Alternatively, the entire side surface of the projectile shielding member 400 can be composed of the filter F.

[0105] The filter F can filter projectiles within an additional separation space provided between the shielding module 300 and the welding part W.

[0106] Thereby, the amount of projectiles flowing into the shielding module 300 side can be minimized.

[0107] FIG. 9 is a diagram showing a welding apparatus 12 according to another embodiment of the present invention. At this time, the projectiles described above in FIG. 9 are denoted by reference numeral "S".

[0108] Since the welding apparatus 12 according to the present embodiment is similar to the welding apparatus 10 of the above embodiment, redundant descriptions of substantially the same or similar configurations as those of the above embodiment are omitted, and hereinafter, the differences from the above embodiment will be mainly examined.

[0109] Referring to FIG. 9, the welding apparatus 12 can further include a gas ejection module K.

[0110] The gas ejection module K can be provided below the shielding module 300. That is, the gas ejection module K can be interposed between the shielding module 300 and the welding part W. As an example, the gas ejection module K can be an air knife.

[0111] Further, as shown in FIG. 9, the gas ejection module K can be configured to eject gas in a direction perpendicular to the laser irradiation direction (e.g., the X-axis direction). Thereby, it is possible to prevent projectiles scattered from the welding part W from flowing into the shielding module 300 side.

[0112] At this time, the welding device 12 can also be configured with the gas ejection module K interposed between the spatter shielding member 400 and the welding part W.

[0113] According to such an embodiment, since the spatter can be primarily blocked by the gas ejection module K and secondarily blocked by the shielding module 300, the inflow of the spatter into the protection module 200 can be more reliably blocked.

[0114] The battery manufacturing apparatus according to the present invention can include the welding devices 10 and 12 described above. Further, the battery manufacturing apparatus according to the present invention can further include various known devices (e.g., battery module inspection devices) for manufacturing battery modules in addition to the welding devices 10 and 12 described above.

[0115] The automobile manufacturing apparatus according to the present invention can include the welding devices 10 and 12 described above. Further, the automobile manufacturing apparatus according to the present invention can further include various known devices (e.g., automobile inspection devices) for manufacturing automobiles in addition to the welding devices 10 and 12 described above.

[0116] As described above, the present invention has been described with reference to limited embodiments and drawings. However, the present invention is not limited thereby, and it goes without saying that those having ordinary knowledge in the technical field to which the present invention pertains can make various modifications and variations within the equivalent scope of the technical idea of the present invention and the following claims.

[0117] On the other hand, although terms indicating directions such as up, down, left, right, front, and rear are used in the present invention, these terms are for convenience of explanation, and it is obvious to those skilled in the art of the present invention that they can vary depending on the position of the object to be targeted and the position of the observer.

Explanation of Reference Numerals

[0118] 10 Welding device 12 Welding device 100 Laser irradiation module 200 Protection module 210 Protection part 220 Protection frame 300 Shut-off module 310 Body 312 Guide part 314 Gas inflow channel 320 Chamber 322 Gas inflow hole 400 Scattered matter blocking member 410 Rib

Claims

1. A laser irradiation module configured to irradiate a laser; A protection module disposed outside the laser irradiation module, the protection module being configured to block scattered matter scattered from a welding part; A blocking module disposed outside the protection module, the blocking module being configured such that gas flows into the inside thereof to block the scattered matter from flowing into the protection module side; A scattered matter blocking member provided outside the blocking module, the scattered matter blocking member being configured to block the scattered matter from flowing into the blocking module side; comprising; The scattered matter blocking member is configured such that the inner diameter becomes smaller as it goes toward the welding part side; The scattered matter blocking member is configured such that a plurality of ribs are formed in the circumferential direction; An opening is formed between the plurality of ribs; The opening includes a filter configured to filter the scattered matter, a welding apparatus.

2. The blocking module is; configured such that a vortex is formed by the gas flowing into the inside thereof, the welding apparatus according to Claim 1.

3. The blocking module is; configured such that the vortex is formed along the circumferential direction inside the blocking module, the welding apparatus according to Claim 2.

4. The blocking module is; configured such that the vortex is formed in a state of being in contact with the lower surface of the protection module, the welding apparatus according to Claim 2.

5. The blocking module is; including a body, The body is; including a guide part configured to guide the inflow of gas into the body, the welding apparatus according to Claim 1.

6. The guide part is; an inclined part formed to be inclined upward in the direction of the protection module on the outer peripheral surface of the body; an incision part connected to an end adjacent to the protection module at the inclined part, the incision part being configured to guide the flow of gas from the outer peripheral surface of the body to the inner peripheral surface side of the body; including, the welding apparatus according to Claim 5.

7. The incision part is; a first part configured to face the inner peripheral surface side of the body; a second part configured to face the outer peripheral surface side of the body; including, the welding apparatus according to Claim 6.

8. The distance between the first part and the second part is; The welding apparatus according to claim 7, which is configured to become smaller as it goes toward the inner peripheral surface side of the body.

9. The cutoff module The welding apparatus according to claim 6, further including a chamber that houses the body therein and has a gas inlet hole configured to allow a gas to flow into the inclined portion.

10. The body further includes a gas inlet channel formed along the circumferential direction of the outer peripheral surface of the body and connected to an end of the inclined portion, The gas inlet channel is configured to communicate with the gas inlet hole, and the welding apparatus according to claim 9.

11. The guide portion is configured to be formed in a plurality along the outer peripheral surface of the body, and the welding apparatus according to claim 5.

12. The guide portion is configured to be inclined in one side direction along the outer peripheral surface of the body, and the welding apparatus according to claim 5.

13. The welding apparatus according to claim 1, further including a gas ejection module provided below the cutoff module and configured to eject a gas in a direction perpendicular to the irradiation direction of the laser.

14. A battery manufacturing apparatus including the welding apparatus according to any one of claims 1 to 13.

15. An automobile manufacturing apparatus including the welding apparatus according to any one of claims 1 to 13.

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