Dust removal cover and dust removal device

Abstract

The utility model provides a dust removal cover and a dust removal device, the dust removal cover comprises a cover body and a first guide plate, the cover body is provided with a cavity, the cavity penetrates through the cover body in a first direction, one end of the cavity is a working end, the working end is configured to face a battery, the cover body is also provided with an air suction port, and the air suction port is communicated with the cavity; at least part of the first guide plate is located in the cavity, and the side, away from the working end, of the first guide plate is connected with the cover body; wherein the first flow guide plate is obliquely arranged relative to the working end, and the orthographic projection of the first flow guide plate on the inner wall of the cavity with the air suction port is partially overlapped with the air suction port; according to the dust removal cover in the embodiment of the invention, the dust removal effect on dust generated in the laser cleaning work of the battery can be improved.

Description

Technical Field

[0001] This utility model relates to the field of battery processing technology, specifically to a dust removal hood and dust removal device. Background Technology

[0002] During the sealing nail welding process, the battery's electrolyte inlet needs to be cleaned using laser cleaning technology. During the laser cleaning process, the material on the surface of the battery's electrolyte inlet absorbs laser energy, heats up, and evaporates or sublimates, thereby generating a large amount of dust. The dust needs to be removed in time with a dust collector; otherwise, it will accumulate on the battery's electrolyte inlet or the surface of the welding fixture, affecting the effect of laser cleaning or subsequent laser welding. At the same time, if too much dust accumulates, it may also cause local open flames or explosions.

[0003] However, the structure of the dust hood in the relevant technology prevents the dust extraction airflow from reaching the laser working surface, resulting in insufficient wind speed on the laser working surface to carry away the dust and poor dust removal effect. Utility Model Content

[0004] The present invention provides a dust removal hood and a dust removal device, which can improve the technical problem of poor dust removal effect of dust removal hoods in related technologies.

[0005] In a first aspect, embodiments of the present invention provide a dust removal hood, comprising:

[0006] The cover has a cavity that extends through it in a first direction. One end of the cavity is a working end, which is configured to face the battery. The cover also has an air intake that communicates with the cavity.

[0007] A first guide vane, at least a portion of which is located within the cavity, with the side of the first guide vane away from the working end connected to the cover.

[0008] The first guide plate is inclined relative to the working end, and the orthographic projection of the first guide plate on the inner wall of the cavity with the air inlet partially overlaps with the air inlet.

[0009] In some embodiments, the cover is further provided with an air inlet, which is connected to the cavity and is positioned opposite to the air intake.

[0010] In some embodiments, at least a portion of the first deflector is located between the air intake and the air inlet.

[0011] In some embodiments, the dust collector hood further includes a second guide plate, at least a portion of which is located within the cavity, and the side of the second guide plate away from the working end is connected to the hood body.

[0012] The second guide plate is inclined relative to the working end, and the orthographic projection of the second guide plate on the inner wall of the cavity with the air inlet partially overlaps with the air inlet. The extension direction of the second guide plate intersects with the extension direction of the first guide plate.

[0013] In some embodiments, the first guide plate divides the cavity into a first cavity and a second cavity;

[0014] The second guide plate is located inside the first cavity. One end of the first cavity is the working end, one end of the second cavity is connected to the air intake, and the other end faces the working end and is connected to the first cavity.

[0015] In some embodiments, the second guide plate divides the first cavity into a first sub-cavity and a second sub-cavity;

[0016] The first sub-cavity has one end as the working end, and the second sub-cavity has one end connected to the air inlet and the other end facing the working end and connected to the first sub-cavity.

[0017] In some embodiments, in the first direction, the vertical distance from the end of the second guide plate near the battery to the battery is greater than the vertical distance from the end of the first guide plate near the battery to the battery.

[0018] In some embodiments, at least a portion of the second deflector protrudes from the cover in a first direction.

[0019] In some embodiments, the orthographic projection of the second guide plate onto the inner wall of the cavity having the air intake covers the air intake.

[0020] In some embodiments, the orthogonal projection of the first guide vane and / or the second guide vane in the first direction falls outside the working end.

[0021] Secondly, embodiments of this utility model also provide a dust removal device, including a dust removal hood.

[0022] The beneficial effects of the embodiments of this utility model are as follows:

[0023] In an embodiment of this utility model, the dust removal hood includes a hood body and a first guide plate. The hood body has a cavity that extends through the hood body in a first direction. The cavity includes a working end, which is configured to face the battery. The hood body also has an air intake, which communicates with the cavity. The first guide plate is located inside the cavity. The side of the first guide plate away from the working end is connected to the hood body. The first guide plate is inclined relative to the working end. The orthographic projection of the first guide plate on the inner wall of the cavity with the air intake partially overlaps with the air intake. The battery part to be welded faces the working end. The laser welding device and the laser cleaning device can perform welding and laser cleaning operations on the battery located at the working end through the cavity. In this embodiment, the air intake on the hood body can draw gas from the cavity to generate a dust removal airflow. The first guide plate allows the dust removal airflow generated by the air intake to be closer to the working end, thereby increasing the intensity of the dust removal airflow at the working end of the cavity and improving the dust removal effect on the battery generated during laser cleaning. Attached Figure Description

[0024] To more clearly illustrate the technical solutions in the embodiments of this utility model, the drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0025] Figure 1 This is a three-dimensional structural diagram of the dust removal hood provided in an embodiment of the present utility model;

[0026] Figure 2 This is a cross-sectional structural schematic diagram of the dust removal hood provided in an embodiment of this utility model;

[0027] Figure 3 This is a simulation diagram of the wind speed inside the dust collector hood provided in an embodiment of this utility model;

[0028] Figure 4 This is a three-dimensional structural schematic diagram of the dust cover provided in an embodiment of the present invention from another perspective;

[0029] Figure 5 This is a three-dimensional structural schematic diagram of the dust cover provided in another embodiment of the present utility model.

[0030] Explanation of reference numerals in the attached figures:

[0031] 1. Cover; 2. Cavity; 21. Working end; 22. First cavity; 221. First sub-cavity; 222. Second sub-cavity; 23. Second cavity; 3. Inlet; 4. First guide plate; 5. Inlet; 6. Second guide plate; 7. First connector; 8. Second connector; 9. First channel; 10. Second channel. Detailed Implementation

[0032] 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 skilled in the art without creative effort are within the scope of protection of the present utility model. In addition, it should be understood that the specific embodiments described herein are only for illustration and explanation of the present utility model and are not intended to limit the present utility model. In the present utility model, unless otherwise stated, directional terms such as "upper" and "lower" generally refer to the upper and lower positions of the device in actual use or operation, specifically the drawing directions in the accompanying drawings; while "inner" and "outer" refer to the outline of the device.

[0033] First, some content in the background technology will be explained. The sealing nail welding in the background technology refers to welding the liquid injection hole cap (sealing nail) on the battery casing to the battery cover plate.

[0034] This application proposes a dust removal hood. Figures 1 to 5 These are some embodiments of this application. As shown in the accompanying drawings, the Z direction is the first direction, and will be used in the following description as the first direction Z.

[0035] Please see Figures 1 to 2 In some embodiments of this application, the dust removal hood includes a hood body 1, the hood body 1 is provided with a cavity 2, the cavity 2 penetrates the hood body 1 in a first direction Z, one end of the cavity 2 is a working end 21, the working end 21 is configured to face the battery, the hood body 1 is also provided with an air intake 3, the air intake 3 is connected to the cavity 2; wherein, the part of the battery to be welded faces the working end 21, the laser welding device and the laser cleaning device can perform welding operation and laser cleaning operation on the battery near the working end 21 through the cavity 2, that is, the structural arrangement of the cavity 2 makes the hood body 1 not interfere with the welding and laser cleaning of the battery.

[0036] In addition, the cover 1 is provided with an air intake 3, which is connected to the cavity 2. The negative pressure device can extract the gas in the cavity 2 from the air intake 3 through the air intake 3, thereby removing the dust generated during the laser cleaning of the battery's liquid filling port from the cavity 2, so as to avoid dust residue on the surface of the battery's liquid filling port or accumulation on the surface of the welding fixture.

[0037] In some embodiments of this application, the dust hood further includes a first guide plate 4, at least a portion of which is located within the cavity 2, and the side of the first guide plate 4 away from the working end 21 is connected to the hood 1; wherein the first guide plate 4 is capable of guiding the gas within the cavity 2.

[0038] In some embodiments of this application, the first guide plate 4 is inclined relative to the working end 21, and the orthographic projection of the first guide plate 4 on the inner wall of the cavity 2 with the air intake 3 partially overlaps with the air intake 3; that is, in the first direction Z and in the direction towards the working end 21, the vertical distance between the first guide plate 4 and the inner wall of the cavity 2 with the air intake 3 gradually increases.

[0039] In the technical solution of this application, by providing an air intake 3 on the cover 1, the air intake 3 can draw gas from the cavity 2 to generate a dust removal airflow; the setting of the first guide plate 4 allows the dust removal airflow generated by the air intake 3 to be closer to the working end 21, thereby increasing the intensity of the dust removal airflow at the working end 21 of the cavity 2, and thus improving the dust removal effect on the dust generated by the battery in the laser cleaning process.

[0040] In some embodiments of this application, the cover 1 is further provided with an air inlet 5, which communicates with the cavity 2 and is positioned opposite to the air intake 3. The air inlet 5 is configured to introduce inert gas into the cavity 2, thereby improving the quality of the battery sealing nail welding. The air inlet 5 and air intake 3 are positioned opposite each other, meaning their relative positions are relatively far, to prevent the inert gas introduced through the air inlet 5 from being sucked away by the air intake 3 before it has fully diffused into the cavity 2, thus ensuring the quality of the battery sealing nail welding.

[0041] In some embodiments of this application, the inert gas introduced at the air inlet 5 is nitrogen.

[0042] In some embodiments of this application, at least a portion of the first guide plate 4 is located between the air intake 3 and the air inlet 5. This arrangement prevents the air intake 3 from directly drawing inert gas into the cavity 2 from the air inlet 5 in the direction from the air intake 3 to the air inlet 5, ensuring that the concentration of inert gas in the cavity 2 reaches a certain standard, thereby ensuring the welding quality of the battery sealing nail.

[0043] In one embodiment of this application, the first guide plate 4 can separate a portion of the air intake 3 and a portion of the air inlet 5; in another embodiment of this application, the first guide plate 4 can completely separate the air intake 3 and the air inlet 5; no limitation is made here.

[0044] In some embodiments of this application, the dust hood further includes a second guide plate 6, which is located inside the cavity 2. The side of the second guide plate 6 away from the working end 21 is connected to the hood 1. The second guide plate 6 is inclined relative to the working end 21. The orthographic projection of the second guide plate 6 on the inner wall of the cavity 2 with the air inlet 5 partially overlaps with the air inlet 5. The extension direction of the second guide plate 6 intersects with the extension direction of the first guide plate 4.

[0045] In this embodiment, the second guide plate 6 can serve as a guide to guide the inert gas entering the cavity 2 from the air inlet 5 to diffuse along the guiding direction of the second guide plate 6. That is, the inert gas introduced into the cavity 2 through the air inlet 3 can flow from the gap between the second guide plate 6 and the working end 21 to the working end 21 of the cavity 2, so as to ensure the concentration of inert gas at the working end 21 of the cavity 2, thereby ensuring the welding quality of the battery sealing nail.

[0046] In some embodiments of this application, the first guide plate 4 and the second guide plate 6 are detachably connected to the cover 1. Since the cavity 2 penetrates the cover 1 in the first direction Z, it is convenient for operators to disassemble and install the first guide plate 4 and the second guide plate 6. It also facilitates the adjustment of the tilt angle of the first guide plate 4 and the second guide plate 6 by operators to adjust the welding of sealing nails for different types of batteries, thereby ensuring the welding quality of sealing nails and the dust removal effect for different types of batteries.

[0047] Please see Figure 3 , Figure 3 This is a simulation diagram of the airflow velocity inside the dust removal hood in this application; the airflow velocity is the highest near the working end 21, thereby improving the dust removal effect on the dust generated by the battery during laser cleaning.

[0048] In some embodiments of this application, in the first direction Z, that is, in this embodiment, the vertical distance from the end of the second guide plate 6 near the battery to the battery is greater than the vertical distance from the end of the first guide plate 4 near the battery to the battery; in this embodiment, the second guide plate 6 is positioned closer to the battery than the first guide plate 4, thereby preventing the inert gas flowing out from the air inlet 5 from being drawn away by the dust removal airflow generated by the air intake 3 before it diffuses to the welding part of the battery.

[0049] A sealing structure is provided between the part of the battery to be welded and the cover 1. A sealing cavity is provided inside the sealing structure. Inert gas flowing out from the air inlet 5 flows into the sealing cavity and is then sucked away by the air intake 3 to ensure the concentration of inert gas in the part of the battery to be welded.

[0050] In some embodiments of this application, at least a portion of the second guide plate 6 protrudes from the cover 1 in the first direction Z to ensure that a portion of the inert gas flowing out from the air inlet 5 is not directly sucked away by the air intake 3, thereby ensuring the concentration of inert gas in the portion of the battery to be welded.

[0051] In some embodiments of this application, the orthographic projection of the second guide plate 6 on the inner wall of the cavity 2 with the air intake 3 covers the air intake 3; that is, in this embodiment, the second guide plate 6 completely separates the air intake 3 and the air inlet 5 in the direction from the air intake 3 to the air inlet 5, so as to avoid the dust removal airflow generated by the air intake 3 being drawn away by the air intake 3 before the inert gas has diffused to a certain concentration at the working end, thereby affecting the welding quality of the battery sealing nail.

[0052] In some embodiments of this application, the orthogonal projection of the first guide plate 4 in the first direction Z falls outside the working end 21, that is, the first guide plate 4 will not block the working end 21 in the first direction Z; this is configured to avoid the structure of the first guide plate 4 interfering with the welding operation and laser cleaning operation of the battery located near the working end 21.

[0053] In some embodiments of this application, the orthographic projection of the second guide plate 6 in the first direction Z falls outside the working end, that is, the second guide plate 6 will not block the working end 21 in the first direction Z; this is configured to avoid the structure of the second guide plate 6 interfering with the welding operation and laser cleaning operation of the battery located near the working end 21.

[0054] Please see Figures 4 to 5 In some embodiments of this application, the first guide plate 4 divides the cavity 2 into a first cavity 22 and a second cavity 23; wherein, the second guide plate 6 is located inside the first cavity 22, one end of the first cavity 22 is the working end 21, one end of the second cavity 23 is connected to the air intake 3, and the other end faces the working end 21 and is connected to the first cavity 22; in this embodiment, the dust removal airflow can flow into the second cavity 23 from the connection between the first cavity 22 and the second cavity 23 and flow out from the air intake 3, and the connection between the first cavity 22 and the second cavity 23 is located close to the battery, thereby improving the dust removal effect on the battery.

[0055] In some embodiments of this application, the second guide plate 6 divides the first cavity 22 into a first sub-cavity 221 and a second sub-cavity 222. One end of the first sub-cavity 221 is the working end 21, and one end of the second sub-cavity 222 is connected to the air inlet 5, while the other end faces the working end 21 and is connected to the first sub-cavity. In this embodiment, inert gas can enter the second sub-cavity 222 from the air inlet 5 and enter the first sub-cavity 221 from the connection between the second sub-cavity 222 and the first sub-cavity 221. The connection between the first sub-cavity 221 and the second sub-cavity 222 is located close to the battery, thereby ensuring the concentration of inert gas near the battery welding area.

[0056] In some embodiments of this application, a first connector 7 is provided on the cover 1, a first channel 9 is provided inside the first connector 7, the first channel 9 is connected to the air intake 3, and the first connector 7 is configured to connect to a negative pressure device.

[0057] In some embodiments of this application, a second connector 8 is provided on the cover 1, and a second channel 10 is provided inside the second connector 8. The second channel 10 is connected to the air inlet 5. The second connector 8 is configured to connect to a supply device, which is capable of providing inert gas.

[0058] This application also proposes a dust removal device, which includes a dust removal hood as described above. Since this dust removal device adopts all the technical solutions of all the above embodiments, it has at least the beneficial effects brought about by the technical solutions of the above embodiments, and will not be described in detail here.

[0059] In some embodiments of this application, the dust removal device includes a cover 1, the cover 1 having a cavity 2 that extends through the cover 1 in a first direction Z, one end of the cavity 2 being a working end 21 configured to face the battery, and the cover 1 also having an air intake 3 connected to the cavity 2; wherein, the part of the battery to be welded faces the working end 21, and the laser welding device and the laser cleaning device can perform welding and laser cleaning operations on the battery near the working end 21 through the cavity 2, that is, the structure of the cavity 2 ensures that the cover 1 will not interfere with the welding and laser cleaning of the battery.

[0060] In addition, the cover 1 is provided with an air intake 3, which is connected to the cavity 2. The negative pressure device can extract the gas in the cavity 2 from the air intake 3 through the air intake 3, thereby removing the dust generated during the laser cleaning of the battery's liquid filling port from the cavity 2, so as to avoid dust residue on the surface of the battery's liquid filling port or accumulation on the surface of the welding fixture.

[0061] In some embodiments of this application, the dust hood further includes a first guide plate 4, at least a portion of which is located within the cavity 2, and the side of the first guide plate 4 away from the working end 21 is connected to the hood 1; wherein the first guide plate 4 is capable of guiding the gas within the cavity 2.

[0062] In some embodiments of this application, the first guide plate 4 is inclined relative to the working end 21, and the orthographic projection of the first guide plate 4 on the inner wall of the cavity 2 with the air intake 3 partially overlaps with the air intake 3; that is, in the first direction Z and in the direction towards the working end 21, the vertical distance between the first guide plate 4 and the inner wall of the cavity 2 with the air intake 3 gradually increases.

[0063] In the dust removal device proposed in this application, an air intake 3 is provided on the cover 1, which can draw gas from the cavity 2 to generate a dust removal airflow; the first guide plate 4 is provided so that the dust removal airflow generated by the air intake 3 can be closer to the working end 21, thereby increasing the intensity of the dust removal airflow at the working end 21 of the cavity 2, and thus improving the dust removal effect on the dust generated by the battery in the laser cleaning process.

[0064] The embodiments of this utility model have been described in detail above. Specific examples have been used to illustrate the principles and implementation methods of this utility model. The description of the above embodiments is only for the purpose of helping to understand the method and core ideas of this utility model. At the same time, for those skilled in the art, there will be changes in the specific implementation methods and application scope based on the ideas of this utility model. Therefore, the content of this specification should not be construed as a limitation of this utility model.

Claims

1. A dust collector hood, characterized in that, include: A cover, the cover having a cavity extending through the cover in a first direction, one end of the cavity being a working end configured to face the battery, and the cover also having an air intake communicating with the cavity; and A first guide plate, at least a portion of which is located within the cavity, is connected to the cover on the side of the first guide plate away from the working end; The first guide plate is inclined relative to the working end, and the orthographic projection of the first guide plate on the inner wall of the cavity with the air inlet partially overlaps with the air inlet.

2. The dust collector hood according to claim 1, characterized in that, The cover is also provided with an air inlet, which is connected to the cavity and is positioned opposite to the air intake.

3. The dust collector hood according to claim 2, characterized in that, At least a portion of the first deflector is located between the air intake and the air inlet.

4. The dust collector hood according to claim 2, characterized in that, The dust removal hood also includes a second guide plate, at least a portion of which is located within the cavity, and the side of the second guide plate away from the working end is connected to the hood body; The second guide plate is inclined relative to the working end, and the orthographic projection of the second guide plate on the inner wall of the cavity with the air inlet partially overlaps with the air inlet. The extension direction of the second guide plate intersects with the extension direction of the first guide plate.

5. The dust collector hood according to claim 4, characterized in that, The first guide plate divides the cavity into a first cavity and a second cavity; The second guide plate is located inside the first cavity. One end of the first cavity is the working end, one end of the second cavity is connected to the air inlet, and the other end faces the working end and is connected to the first cavity.

6. The dust collector hood according to claim 5, characterized in that, The second guide plate divides the first cavity into a first sub-cavity and a second sub-cavity; Wherein, one end of the first sub-cavity is the working end, one end of the second sub-cavity is connected to the air inlet, and the other end faces the working end and is connected to the first sub-cavity.

7. The dust collector hood according to claim 4, characterized in that, In the first direction, the vertical distance from the end of the second guide plate near the battery to the battery is greater than the vertical distance from the end of the first guide plate near the battery to the battery.

8. The dust collector hood according to claim 7, characterized in that, At least a portion of the second guide vane protrudes from the cover in the first direction.

9. The dust collector hood according to claim 4, characterized in that, The orthographic projection of the second guide plate on the inner wall of the cavity having the air intake covers the air intake.

10. The dust collector hood according to claim 4, characterized in that, The orthogonal projection of the first guide plate and / or the second guide plate in the first direction falls outside the working end.

11. A dust removal device, characterized in that, Includes the dust hood as described in any one of claims 1 to 10.

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