Welding device and battery production line

Abstract

The welding device comprises a dust removal cover, an air blowing piece, a welding slag catcher and a laser welding head, the interior of the dust removal cover is of a hollow structure, a welding hole is formed in the bottom face of the dust removal cover, and the side, opposite to the bottom face, of the dust removal cover is of an opening structure; the blowing part is arranged on one side of the inner wall of the dust hood in the first direction, the welding slag catcher is arranged on the other side of the inner wall of the dust hood in the first direction, the laser welding head is arranged above the opening side of the dust hood in the second direction, and a lens is arranged on the laser welding head. According to the scheme, after the dust hood is placed on the battery, laser emitted by the laser welding head penetrates through the welding hole to weld the busbar, at the moment, the air blowing piece is started at the same time and blows welding slag generated in the welding process to the welding slag catcher, and the welding slag catcher catches the generated welding slag; and therefore, the generated welding slag can be effectively prevented from escaping.

Description

Technical Field

[0001] This application relates to the technical field of batteries, and particularly to a welding device and a battery production line. Background Art

[0002] During the welding process of the busbar on the battery / battery pack, strict control of the welding slag generated during welding is required. When the high-temperature welding slag escapes upward, it will cause the lens of the laser welding head to be contaminated / burned. When the high-temperature welding slag escapes downward, it will burn the sampling wire harness, the explosion-proof valve of the battery cell, etc. on the upper surface of the product.

[0003] In order to reduce or prevent the upward or downward escape of high-temperature welding slag, an air knife is usually used to blow out the welding slag. However, during the use of the air knife, it is unable to effectively prevent the upward or downward escape of high-temperature welding slag. Summary of the Utility Model

[0004] In view of the above problems, this application provides a welding device and a battery production line, which can solve the problem that the air knife cannot effectively prevent the upward or downward escape of high-temperature welding slag during use.

[0005] To solve the above technical problems, in a first aspect, this application proposes a welding device, including:

[0006] A dust removal cover, the inside of the dust removal cover is a hollow structure, the bottom surface of the dust removal cover is provided with a welding hole, and the side of the dust removal cover opposite to the bottom surface is an open structure;

[0007] A blowing member, the blowing member is arranged on one side of the inner wall of the dust removal cover along a first direction, wherein the first direction is the blowing direction of the blowing member;

[0008] A welding slag catcher, the welding slag catcher is arranged on the other side of the inner wall of the dust removal cover along the first direction; a guiding surface is arranged on the side of the welding slag catcher facing the blowing member;

[0009] A laser welding head, the laser welding head is arranged above the open side of the dust removal cover along a second direction, and a lens is arranged on the laser welding head, wherein the second direction intersects with the first direction.

[0010] In the technical solution of the embodiment of this application, when the dust removal cover is placed on the battery, the laser emitted by the laser welding head passes through the welding hole to weld the busbar. At this time, the blowing member is turned on simultaneously, and the blowing member blows the welding slag generated during the welding process towards the welding slag catcher, and the welding slag catcher catches the generated welding slag, thereby effectively avoiding the escape of the generated welding slag.

[0011] In some embodiments, a plurality of holes are arranged on the welding slag catcher. In this way, it is convenient to catch the welding slag.

[0012] In some embodiments, a first capture hole is provided on one side of the slag catcher facing the blowing member;

[0013] On the side of the slag catcher facing away from the blowing member and on the opposite sides of the slag catcher along the second direction, second capture holes are provided, and the aperture of the first capture hole is larger than that of the second capture hole. In this way, the slag filtering effect can be enhanced.

[0014] In some embodiments, third capture holes are provided on the opposite sides of the slag catcher along the third direction, and the aperture of the third capture hole is larger than that of the first capture hole, wherein the third direction intersects the plane formed by the first direction and the second direction. In this way, it can be ensured that the airflow enters the slag catcher and diffuses rapidly, avoiding affecting the flow rate of the airflow blown out by the blowing member.

[0015] In some embodiments, the welding device further includes a first vacuum cleaner, and the first vacuum cleaner is arranged on the side surface of the slag catcher along the third direction. In this way, the slag escaping from both sides along the third direction can be absorbed by the first vacuum cleaner.

[0016] In some embodiments, the welding device further includes a flexible layer, and the flexible layer is arranged on the surface of the slag catcher. In this way, it is avoided that under the drive of the airflow, the high-speed slag rebounds upward onto the protective lens after hitting the slag catcher.

[0017] In some embodiments, the welding device further includes a high-temperature resistant layer, and the high-temperature resistant layer is arranged on the surface of the slag catcher. In this way, since the slag itself has a high temperature, when the slag hits the slag catcher, due to the high-temperature resistant layer provided on the slag catcher, the problem of ignition on the surface of the slag catcher can be avoided.

[0018] In some embodiments, the welding device further includes a second vacuum cleaner, and the second vacuum cleaner is arranged on the side of the slag catcher facing away from the blowing member. This can effectively absorb the slag escaping from the side of the slag catcher facing away from the blowing member.

[0019] In some embodiments, the side of the dust removal cover where the slag catcher is located is a closed structure. This can prevent the slag from escaping from the back of the dust removal cover.

[0020] In some embodiments, the slag catcher is detachably connected to the other side of the inner wall of the dust removal cover along the first direction. In this way, it is convenient to disassemble the slag catcher to clean the slag inside the slag catcher and prevent slag accumulation.

[0021] In some embodiments, the slag catcher includes a plurality of blowing members, and the plurality of blowing members are all arranged on one side of the inner wall of the dust removal hood along a first direction. In this way, the flow rate of the gas blown towards the slag can be ensured.

[0022] In some embodiments, the position of the blowing member relative to the inner wall of the dust removal hood is adjustable. In this way, by adjusting the position of the blowing member, the position of the blowing member can correspond to the position where the slag is generated.

[0023] In a second aspect, the present application provides a battery production line, including the welding device as described in any one of the embodiments of the present application.

[0024] The above description is only an overview of the technical solution of the present application. In order to be able to understand the technical means of the present application more clearly, it can be implemented according to the content of the specification. And in order to make the above and other purposes, features and advantages of the present application more obvious and understandable, the specific embodiments of the present application are specifically given below. Description of the Drawings

[0025] By reading the following detailed description of the embodiments, various other advantages and benefits will become clear to those of ordinary skill in the art. The drawings are only for the purpose of showing the embodiments and are not considered to be a limitation of the present application. And in all the drawings, the same reference numerals are used to represent the same components. In the drawings:

[0026] Figure 1 It is a schematic structural diagram of a welding device provided by some embodiments of the present application;

[0027] Figure 2 It is a schematic diagram of a slag catcher provided by some embodiments of the present application;

[0028] Figure 3 It is another schematic diagram of a slag catcher provided by some embodiments of the present application.

[0029] The reference numerals in the specific embodiments are as follows:

[0030] 10. Dust removal hood; 101. Welding hole; 11. Blowing member; 12. Slag catcher; 121. Deflecting surface; 122. First capture hole; 123. Second capture hole; 124. Third capture hole; 13. Laser welding head; 14. Lens. Detailed Embodiments

[0031] The embodiments of the technical solution of the present application will be described in detail below with reference to the drawings. The following embodiments are only used to illustrate the technical solution of the present application more clearly, so they are only examples and cannot be used to limit the protection scope of the present application.

[0032] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the technical field to which this application belongs; the terms used herein are for the purpose of describing specific embodiments only and are not intended to limit this application; the terms "comprising" and "having" and any variations thereof in the specification and claims of this application and the above description of the drawings are intended to cover non-exclusive inclusion.

[0033] In the description of the embodiments of this application, technical terms such as "first" and "second" are only used to distinguish different objects and cannot be understood as indicating or implying relative importance or implicitly specifying the quantity, specific order or primary-secondary relationship of the indicated technical features. In the description of the embodiments of this application, the meaning of "a plurality" is more than two, unless otherwise specifically defined.

[0034] Reference to "embodiment" herein means that a particular feature, structure or characteristic described in connection with the embodiment can be included in at least one embodiment of this application. The phrase does not necessarily refer to the same embodiment when it appears in various places in the specification, nor is it an independent or alternative embodiment mutually exclusive with other embodiments. It is explicitly and implicitly understood by those skilled in the art that the embodiments described herein can be combined with other embodiments.

[0035] In the description of the embodiments of this application, the term "and / or" is merely a description of the association relationship of associated objects, indicating that there can be three relationships. For example, A and / or B can represent: A exists alone, A and B exist simultaneously, and B exists alone. In addition, the character " / " herein generally represents an "or" relationship between the associated objects before and after.

[0036] In the description of the embodiments of this application, the term "a plurality" refers to more than two (including two). Similarly, "multiple groups" refers to more than two groups (including two groups), and "multiple pieces" refers to more than two pieces (including two pieces).

[0037] In the description of the embodiments of this application, the orientation or positional relationship indicated by technical terms such as "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the embodiments of this application and simplifying the description, rather than indicating or implying that the indicated device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the embodiments of this application.

[0038] In the description of the embodiments of the present application, unless otherwise clearly specified and limited, technical terms such as "installation", "connection", "connection", "fixation" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or integrated; it can also be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two components or the interaction relationship between two components. For those of ordinary skill in the art, the specific meanings of the above terms in the embodiments of the present application can be understood according to specific circumstances.

[0039] During the Busbar welding process of new energy batteries / battery packs, strict control of welding slag is required. The high-temperature welding slag escaping upwards will cause the lens of the laser welding head to be contaminated / burned, leading to welding quality problems; escaping downwards will burn the sampling wire harness, cell explosion-proof valve, etc. on the upper surface of the product.

[0040] In related technologies, the method for dealing with the upward escape of welding slag generally requires using the high-speed airflow generated by an air knife to entrain and blow out the welding slag from the area where the laser welding lens is located. However, this method still cannot effectively prevent the high-temperature welding slag from escaping upwards or downwards.

[0041] Based on the above considerations, in order to solve the problem that the air knife cannot effectively prevent the high-temperature welding slag from escaping upwards or downwards during use, a welding device is designed. The welding device includes a dust removal cover, a blowing member, a welding slag catcher, and a laser welding head. Among them, the inside of the dust removal cover is a hollow structure, the bottom surface of the dust removal cover is provided with a welding hole, and the side of the dust removal cover opposite to the bottom surface is an open structure; the blowing member is arranged on one side of the inner wall of the dust removal cover along the first direction, where the first direction is the blowing direction of the blowing member; the welding slag catcher is arranged on the other side of the inner wall of the dust removal cover along the first direction; the laser welding head is arranged above the open side of the dust removal cover along the second direction, and a lens is arranged on the laser welding head, where the second direction intersects with the first direction.

[0042] In the technical solution of the embodiments of the present application, when the dust removal cover is placed on the battery, the laser emitted by the laser welding head passes through the welding hole to weld the busbar. At this time, the blowing member is turned on simultaneously, and the blowing member blows the welding slag generated during the welding process towards the welding slag catcher, and the welding slag catcher catches the generated welding slag, thereby effectively avoiding the escape of the generated welding slag.

[0043] According to some embodiments of the present application, Figure 1 is a schematic structural diagram of the welding device in the present application, Figure 2 is a schematic diagram of the welding slag catcher in the present application. As Figure 1 and in combination with Figure 2As shown in the figure, the present application provides a welding device, which includes a dust removal cover 10, a blowing member 11, a slag catcher 12 and a laser welding head 13. Among them, the inside of the dust removal cover 10 is a hollow structure, a welding hole 101 is provided on the bottom surface of the dust removal cover 10, and one side of the dust removal cover 10 opposite to the bottom surface is an open structure; the blowing member 11 is arranged on one side of the inner wall of the dust removal cover 10 along the first direction, where the first direction is the blowing direction of the blowing member 11; the slag catcher 12 is arranged on the other side of the inner wall of the dust removal cover 10 along the first direction; at the same time, a diversion surface 121 is provided on the side of the slag catcher 12 facing the blowing member 11, and the laser welding head 13 is arranged above the open side of the dust removal cover 10 along the second direction, and a lens 14 is arranged on the laser welding head 13, where the second direction intersects with the first direction.

[0044] In this embodiment, the first direction is as Figure 1 the X-axis direction in Figure 1 and the second direction is as

[0045] the Y-axis direction in Figure 1 As shown in the figure, the inside of the dust removal cover 10 in this embodiment is a hollow structure, the upper side is an open structure, and other surfaces are all closed structures. At the same time, a plurality of welding holes 101 are provided on the bottom surface of the dust removal cover 10, which can be determined according to actual situations, and this specification embodiment does not limit this.

[0046] The blowing member 11 in this embodiment can be an air knife, a blower, etc., and the blowing member 11 can be fixed to the front side of the inner wall of the dust removal cover 10 by bolts, snap connection, etc.

[0047] The slag catcher 12 in this embodiment is a porous structure as a whole. After the slag is blown onto the slag catcher 12, the slag will enter the corresponding holes, thus preventing it from escaping.

[0048] In this embodiment, the slag catcher 12 can be fixed to the rear side of the inner wall of the dust removal cover 10 by bolts, snap connection, etc., and the blowing member 11 and the slag catcher 12 are correspondingly located on the front and rear sides of the inner wall of the dust removal cover 10 along the X-axis direction.

[0049] The laser welding head 13 in this embodiment is integrally arranged on the laser welding machine, and the laser welding head 13 is located above the dust removal cover 10. At the same time, a lens 14 is installed on the laser welding head 13.

[0050] When the wind blown by the blowing member 11 acts on the slag catcher 12, under the action of the diversion surface 121, the high-speed air flow emitted by the blowing member 11 can be divided in advance, and the intensity of the upward air flow formed after the high-speed air flow reaches the rear wall of the dust removal cover 10 can be reduced, thereby reducing the risk of slag escaping upward.

[0051] During use, after the dust removal cover 10 is placed on the battery, the laser emitted by the laser welding head 13 passes through the welding hole 101 to weld the bus bar. At this time, the blowing member 11 is turned on simultaneously, and the blowing member 11 blows the welding slag generated during the welding process towards the welding slag catcher 12, and the welding slag catcher 12 catches the generated welding slag, thereby effectively avoiding the escape of the generated welding slag.

[0052] According to some embodiments of the present application, a plurality of holes are provided on the welding slag catcher 12.

[0053] In this embodiment, the welding slag catcher 12 is integrally of a porous structure. In this way, under the blowing action of the blowing member 11, the welding slag will enter the holes on the welding slag catcher 12, and at this time, the welding slag will be caught by the welding slag catcher 12.

[0054] According to some embodiments of the present application, as Figure 2 and in combination with Figure 3 shown, a first capture hole 122 is provided on the side of the welding slag catcher 12 facing the blowing member 11; second capture holes 123 are provided on the side of the welding slag catcher 12 facing away from the blowing member 11 and on the opposite sides of the welding slag catcher 12 along the second direction. Among them, the aperture of the first capture hole 122 is larger than the aperture of the second capture hole 123.

[0055] Referring to Figure 2 shown, a first capture hole 122 is provided on the front side of the welding slag catcher 12 in this embodiment, and second capture holes 123 are provided on the rear side, upper and lower sides of the welding slag catcher 12. Among them, the aperture of the first capture hole 122 is larger than the aperture of the second capture hole 123.

[0056] During use, the welding slag first passes through the first capture hole 122 under the action of the blowing member 11. At this time, the welding slag with a larger particle size will be caught by the first capture hole 122, and then the welding slag with a smaller particle size will flow out of the first capture hole 122 and be caught by the second capture hole 123. In this way, the welding slag filtering effect can be enhanced.

[0057] According to some embodiments of the present application, as Figure 3 shown, third capture holes 124 are provided on the opposite sides of the welding slag catcher 12 along the third direction. The aperture of the third capture hole 124 is larger than the aperture of the first capture hole 122, where the third direction intersects the plane formed by the first direction and the second direction.

[0058] The third direction in this embodiment is the Z-axis direction as in Figure 1 where the Z-axis is perpendicular to the plane formed by the X and Y axes.

[0059] Referring to Figure 3 and in combination with Figure 1As shown, when the wind blown by the blowing member 11 acts on the front side of the slag catcher 12, at this time, after the air flow passes through the first capture hole 122, it can quickly diffuse from the third capture hole 124, avoiding affecting the flow rate of the air flow blown by the blowing member 11.

[0060] According to some embodiments of the present application, the welding device further includes a first vacuum cleaner (not marked in the figure), and the first vacuum cleaner is disposed on the side surface of the slag catcher 12 along the third direction.

[0061] Reference Figure 3 As shown, in this embodiment, first vacuum cleaners are disposed on both the left and right sides of the slag catcher 12, and the suction ports of the first vacuum cleaners face the third capture hole 124. In this way, the slag escaping from the left and right sides can be absorbed by the first vacuum cleaners.

[0062] According to some embodiments of the present application, the welding device further includes a flexible layer (not marked in the figure), and the flexible layer is disposed on the surface of the slag catcher 12.

[0063] The flexible layer in this embodiment can be an asbestos material, a rubber material, etc., and can be specifically determined according to the actual situation, and the embodiments of this specification do not limit this.

[0064] The flexible layer in this embodiment can be compounded on the surface of the slag catcher 12 through processes such as bonding, coating, spraying, electroplating, etc.

[0065] In this way, since the flexible layer is disposed on the surface of the slag catcher 12, it is avoided that under the drive of the air flow, the high-speed slag rebounds upward to the protective lens after hitting the slag catcher 12.

[0066] According to some embodiments of the present application, the welding device further includes a high-temperature resistant layer (not marked in the figure), and the high-temperature resistant layer is disposed on the surface of the slag catcher 12.

[0067] The high-temperature resistant layer in this embodiment can be an asbestos material, a graphene fabric, a carbon / polymer-based flexible electrothermal film, etc., and can be specifically determined according to the actual situation, and the embodiments of this specification do not limit this.

[0068] The high-temperature resistant layer in this embodiment can be fixed to the surface of the slag catcher 12 by means of bonding, coating, etc.

[0069] In this way, since the temperature of the slag itself is high, when the slag hits the slag catcher 12, because the high-temperature resistant layer is disposed on the slag catcher 12, the problem of ignition on the surface of the slag catcher 12 can be avoided.

[0070] According to some embodiments of the present application, the welding device further includes a second vacuum cleaner (not marked in the figure), and the second vacuum cleaner is disposed on the side of the slag catcher 12 facing away from the blowing member 11.

[0071] Reference Figure 1 As shown, the second vacuum cleaner in this embodiment is located at the rear side of the welding slag catcher 12. The suction port of the second vacuum cleaner faces the second capture hole 123 on the back of the welding slag catcher 12, so that the welding slag escaping from the second capture hole 123 on the back of the welding slag catcher 12 can be effectively absorbed.

[0072] According to some embodiments of the present application, as Figure 1 As shown, the side of the dust removal cover 10 where the welding slag catcher 12 is located is a closed structure. This can prevent the welding slag from escaping from the back of the dust removal cover 10.

[0073] According to some embodiments of the present application, as Figure 1 As shown, the welding slag catcher 12 is detachably connected to the other side of the inner wall of the dust removal cover 10 along the first direction.

[0074] In this embodiment, the welding slag catcher 12 can be fixed to the rear side of the inner wall of the dust removal cover 10 by means of bolts, snap connection, etc., and specifically can be determined according to the actual situation, and this embodiment of the specification does not limit this.

[0075] In this way, it is convenient to disassemble the welding slag catcher 12 to clean the welding slag inside the welding slag catcher 12 and prevent the welding slag from accumulating.

[0076] According to some embodiments of the present application, as Figure 1 As shown, the welding slag catcher 12 includes a plurality of blowing members 11, and the plurality of blowing members 11 are all arranged on one side of the inner wall of the dust removal cover 10 along the first direction.

[0077] In this embodiment, two, three or other blowing members 11 can be arranged on the front side of the inner wall of the dust removal cover 10, and the air outlet of each blowing member 11 faces the welding slag catcher 12. In this way, under the action of the plurality of blowing members 11, the flow rate of the gas blown towards the welding slag can be ensured.

[0078] According to some embodiments of the present application, the position of the blowing member 11 relative to the inner wall of the dust removal cover 10 is adjustable.

[0079] In this embodiment, the blowing member 11 can be connected to the front side of the inner wall of the dust removal cover 10 through the cooperation structure of a slider and a slide rail. In this way, by adjusting the position of the blowing member 11, the position of the blowing member 11 can correspond to the position where the welding slag is generated, so that the wind blown by the blowing member 11 can act vertically on the welding slag.

[0080] The present application also provides a battery production line, including a welding device according to any one of the embodiments of the present application.

[0081] The specific structure of the welding device in this embodiment refers to the above-mentioned embodiment. Since all the technical solutions of the above-mentioned embodiments are adopted in this battery production line, it has at least all the beneficial effects brought by the technical solutions of the above-mentioned embodiments, which will not be elaborated here one by one.

[0082] Finally, it should be noted that: the above embodiments are only used to illustrate the technical solutions of the present application, rather than to limit it; although the present application has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that: they can still modify the technical solutions described in the foregoing embodiments, or perform equivalent replacements on some or all of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the scope of the technical solutions of the embodiments of the present application, and they should all be covered by the scope of the claims and the description of the present application. In particular, as long as there is no structural conflict, the technical features mentioned in each embodiment can be combined in any way. The present application is not limited to the specific embodiments disclosed in the text, but includes all technical solutions falling within the scope of the claims.

Claims

1. A welding device, characterized in that: include: A dust cover, wherein the interior of the dust cover is a hollow structure, a welding hole is provided on the bottom surface of the dust cover, and a side of the dust cover opposite to the bottom surface is an open structure; A blowing member, the blowing member is arranged on one side of the inner wall of the dust cover along a first direction, wherein the first direction is a blowing direction of the blowing member; A welding slag catcher, the welding slag catcher is arranged on the other side of the inner wall of the dust removal cover along the first direction; a guide surface is arranged on the side of the welding slag catcher facing the blowing member; A laser welding head is arranged above the opening side of the dust cover along a second direction, and a lens is arranged on the laser welding head, wherein the second direction intersects with the first direction.

2. The welding device according to claim 1, characterized in that: The slag catcher is provided with a plurality of holes.

3. The welding device according to claim 2, characterized in that: The slag catcher is provided with a first catch hole on one side facing the blowing member; A second catching hole is provided on one side of the slag catcher away from the blowing member and on two opposite sides of the slag catcher along the second direction. The aperture of the first catching hole is larger than the aperture of the second catching hole.

4. The welding device according to claim 3, characterized in that: The slag catcher is provided with third catching holes on opposite sides along a third direction, wherein the aperture of the third catching hole is larger than the aperture of the first catching hole, wherein the third direction intersects with a plane formed by the first direction and the second direction.

5. The welding device according to claim 4, characterized in that: The welding device further includes a first vacuum cleaner, which is disposed on a side surface of the welding slag catcher along the third direction.

6. The welding device according to claim 1, characterized in that: The welding device further comprises a flexible layer, and the flexible layer is arranged on the surface of the slag catcher.

7. The welding device according to any one of claims 1 to 6, characterized in that: The welding device further comprises a high temperature resistant layer, and the high temperature resistant layer is arranged on the surface of the slag catcher.

8. The welding device according to any one of claims 1 to 6, characterized in that: The welding device also includes a second dust collector, which is arranged on a side of the welding slag catcher away from the blowing member.

9. The welding device according to claim 8, characterized in that: The dust removal cover has a closed structure on one side of the welding slag catcher.

10. The welding device according to any one of claims 1 to 6, characterized in that: The welding slag catcher is detachably connected to the other side of the inner wall of the dust removal cover along the first direction.

11. The welding device according to any one of claims 1 to 6, characterized in that: The welding slag catcher comprises a plurality of blowing members, and the plurality of blowing members are all arranged on one side of the inner wall of the dust removal cover along the first direction.

12. The welding device according to claim 11, characterized in that The position of the blowing member relative to the inner wall of the dust removal cover is adjustable.

13. A battery production line, characterized in that: Comprising the welding device according to any one of claims 1 to 12.

Images