Dust removal mechanism and laser welding device

Abstract

The dust removal mechanism comprises an upper cavity shell, a lower cavity shell and an inner cavity shell, the upper cavity shell is arranged on the lower cavity shell, and the inner cavity shell is connected with the upper cavity shell and extends into the lower cavity shell; the lower cavity shell comprises a lower cavity shell body, a partition plate, an air inlet pipeline and an air outlet pipeline, the partition plate is arranged in an inner cavity of the lower cavity shell body to divide the inner cavity into an air inlet cavity and an air outlet cavity, a dust suction opening in the bottom of the lower cavity shell body is provided with a bent part, and the air inlet pipeline is arranged on the lower cavity shell body and connected with the air outlet pipeline. The laser welding device has the advantages that a negative pressure area is formed at the dust collection opening in the bottom of the lower cavity shell, splashing welding slag generated in the laser welding process can be adsorbed into the exhaust cavity by negative pressure, free welding slag can be sucked away by the exhaust pipeline, the welding slag is prevented from falling between batteries, and the potential insulation hazard is reduced; meanwhile, the laser protection lens is protected, and the service life of the laser protection lens is prolonged.

Description

Technical Field

[0001] The utility model belongs to the technical field of energy storage battery packs, in particular to a dust removal mechanism and a laser welding device. Background Art

[0002] During the laser welding of aluminum bars of battery modules, welding slag splashes often occur. The splashing of welding slag will cause welding slag to adhere to the surface of the weld and the nearby aluminum bars. At the same time, the coarse particles of welding slag will also fall between the batteries, posing insulation risks. At the same time, welding slag will also contaminate the laser protection lens, affecting the life of the laser protection lens. Utility Model Content

[0003] The technical problem to be solved by the utility model is how to absorb welding slag.

[0004] In order to solve the above technical problems, the utility model provides the following technical solutions:

[0005] A dust removal mechanism comprises an upper cavity shell, a lower cavity shell and an inner cavity shell, wherein the upper cavity shell is arranged on the lower cavity shell, and the inner cavity shell is connected to the upper cavity shell and extends into the lower cavity shell;

[0006] The lower chamber shell includes a lower chamber shell body, a partition plate, an air intake duct and an exhaust duct. The top of the lower chamber shell body is connected to the upper chamber shell, and the inner chamber shell extends into the lower chamber shell body. The inner chamber of the lower chamber shell body is provided with a partition plate so that the inner chamber is divided into an air intake chamber and an exhaust chamber. The dust suction port at the bottom of the lower chamber shell body is provided with a bending portion, and there is a gap between the bottom of the partition plate and the bending portion, so that the air intake chamber is connected to the exhaust chamber. The lower chamber shell body is provided with an air intake duct and an exhaust duct connection, the air intake duct is connected to the air intake chamber, and the exhaust duct is connected to the exhaust chamber.

[0007] The gas in the air intake chamber is discharged from the gap between the bottom of the partition plate and the bent part to form a high-speed airflow and enter the exhaust chamber, so that a negative pressure area is formed at the dust suction port at the bottom of the lower chamber shell. The spattered welding slag generated during the laser welding process will be absorbed into the exhaust chamber by the negative pressure, and the free welding slag will be sucked away by the exhaust pipe, preventing the welding slag from falling between the batteries and reducing the insulation risk; at the same time, it also protects the laser protection lens and increases the life of the laser protection lens.

[0008] Preferably, the bending portion comprises a horizontal section and a vertical section, the horizontal section is arranged below the partition plate, the vertical section is arranged on the side of the partition plate, and there is a gap between the horizontal section and the vertical section and the partition plate.

[0009] Preferably, the inner cavities of the upper cavity shell and the inner cavity shell are communicated.

[0010] Preferably, the upper cavity shell is connected to the lower cavity shell body and the inner cavity shell by bolts respectively.

[0011] Preferably, two groups of the air intake duct and the exhaust duct are provided.

[0012] Preferably, the air inlet pipe and the air exhaust pipe are symmetrically distributed around the lower chamber shell body.

[0013] Preferably, the lower chamber shell body is connected to the air intake pipe and the exhaust pipe through threads.

[0014] Preferably, a protective gas pipeline is provided on the upper chamber shell.

[0015] Preferably, the cross-section of the inner cavity shell is trapezoidal, and the upper end opening is larger than the lower end opening.

[0016] Preferably, the utility model further provides a laser welding device, comprising a laser welder and the dust removal mechanism, wherein a laser output port of the laser welder is connected to the upper cavity shell.

[0017] Compared with the prior art, the beneficial effects of the utility model are:

[0018] The gas in the air intake chamber is discharged from the gap between the bottom of the partition plate and the bent part to form a high-speed airflow and enter the exhaust chamber, so that a negative pressure area is formed at the dust suction port at the bottom of the lower chamber shell. The spattered welding slag generated during the laser welding process will be absorbed into the exhaust chamber by the negative pressure, and the free welding slag will be sucked away by the exhaust pipe, preventing the welding slag from falling between the batteries and reducing the insulation risk; at the same time, it also protects the laser protection lens and increases the life of the laser protection lens. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a structural schematic diagram of an embodiment of the utility model;

[0020] Figure 2 A cross-sectional view of an embodiment of the utility model;

[0021] Figure 3 It is a schematic structural diagram of a laser welding device according to an embodiment of the utility model. DETAILED DESCRIPTION

[0022] In order to facilitate those skilled in the art to understand the technical solution of the utility model, the technical solution of the utility model is further explained in conjunction with the drawings in the specification.

[0023] In this application, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection, an electrical connection, or a communication; it can be a direct connection, or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0024] In this application, unless otherwise expressly specified and limited, the terms "first" and "second" are used for descriptive purposes only and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include one or more of the features. In the description of this application, "plurality" means two or more, unless otherwise clearly and specifically limited.

[0025] See also Figure 1 to Figure 2 This embodiment discloses a dust removal mechanism, including an upper cavity shell 1, a lower cavity shell 2, and an inner cavity shell 3. The upper cavity shell 1 is fixed to the lower cavity shell 2 by bolts, and the inner cavity shell 3 is fixed to the bottom of the upper cavity shell 1 by bolts and extends into the lower cavity shell 2, and the inner cavities of the upper cavity shell 1 and the inner cavity shell 3 are connected. Furthermore, a protective gas pipeline 11 connected to the inner cavity of the upper cavity shell 1 is provided.

[0026] The lower chamber shell 2 includes a lower chamber shell body 21, a partition plate 22, an air intake duct 23 and an exhaust duct 24. The top of the lower chamber shell body 21 is connected to the upper chamber shell by bolts, and the inner chamber shell 3 extends into the lower chamber shell body 21. The inner chamber of the lower chamber shell body 21 is provided with a partition plate 22 so that the inner chamber is divided into an air intake chamber 201 and an exhaust chamber 202. The dust suction port at the bottom of the lower chamber shell body 21 is provided with a bent portion 211. There is a gap between the bottom of the partition plate 22 and the bent portion 211. Specifically, the bent portion 211 includes a horizontal The horizontal section is arranged below the partition plate 22, and the vertical section is arranged on the side of the partition plate 22, and there is a gap between the horizontal section and the vertical section and the partition plate 22, so that the air intake chamber 201 is connected with the exhaust chamber 202, and two groups of air intake pipes 23 and exhaust pipes 24 are symmetrically arranged on the lower chamber shell body 21, and the air intake pipe 23 is connected with the air intake chamber 201, and the exhaust pipe 24 is connected with the exhaust chamber 202; specifically, the lower chamber shell body 21 is connected with the air intake pipe 23 and the exhaust pipe 24 by threads.

[0027] Furthermore, the cross-section of the inner cavity shell 3 is trapezoidal in shape, and the upper end opening is larger than the lower end opening.

[0028] See also Figure 3 This embodiment also discloses a laser welding device, including a laser welder 4 and the above-mentioned dust removal mechanism, and the laser output port of the laser welder 4 is connected to the upper cavity shell 1.

[0029] The working principle of this embodiment is as follows: the inner cavity of the lower cavity shell body 21 is divided into an air inlet cavity 201 and an air outlet cavity 202 by a partition plate 22, and the gap between the bottom of the partition plate 22 and the bent portion 211 allows the air inlet cavity 201 to communicate with the air outlet cavity 202. During welding, the laser emits light, and the shielding gas is released into the upper cavity shell 1 through the shielding gas pipeline 11, and the shielding gas is exhausted coaxially with the inner cavity shell 3 along the light emitting direction. Compressed air is delivered to the air inlet cavity 201 in the lower cavity shell body 21 through the air inlet pipeline 23, as shown in FIG. Figure 2 As shown, the gas in the air inlet chamber 201 is discharged from the gap between the bottom of the partition plate 22 and the bent portion 211 to form a high-speed airflow and enter the exhaust chamber 202. According to Bernoulli's principle: the faster the gas flow rate, the smaller the pressure; a negative pressure area is formed at the dust suction port at the bottom of the lower chamber shell body 21, and the spattered welding slag generated during the laser welding process will be absorbed into the exhaust chamber 202 by the negative pressure, and the free welding slag will be sucked away by the two exhaust pipes 24.

[0030] In this embodiment, the gas in the air inlet cavity 201 is discharged from the gap between the bottom of the partition plate 22 and the bent portion 211 to form a high-speed airflow and enter the exhaust cavity 202, so that a negative pressure area is formed at the dust suction port at the bottom of the lower cavity shell body 21. The spattered welding slag generated during laser welding will be absorbed into the exhaust cavity 202 by the negative pressure, and the free welding slag will be sucked away by the two exhaust pipes 24, preventing the welding slag from falling between the batteries and reducing the insulation risk. At the same time, it also protects the laser protection lens and increases the life of the laser protection lens.

[0031] It is obvious to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the present invention can be implemented in other specific forms without departing from the spirit or basic features of the present invention. Therefore, no matter from which point of view, the embodiments should be regarded as exemplary and non-restrictive, and the scope of the present invention is defined by the appended claims rather than the above description, and it is intended that all changes falling within the meaning and scope of the equivalent elements of the claims are included in the present invention, and any figure mark in the claims should not be regarded as limiting the claims involved.

[0032] The above-described embodiments merely represent implementation methods of the utility model, and the protection scope of the utility model is not limited to the above-described embodiments. For those skilled in the art, several modifications and improvements can be made without departing from the concept of the utility model, and all of these belong to the protection scope of the utility model.

Claims

1. A dust removal mechanism, characterized in that: It includes an upper cavity shell, a lower cavity shell, and an inner cavity shell, wherein the upper cavity shell is arranged on the lower cavity shell, and the inner cavity shell is connected to the upper cavity shell and extends into the lower cavity shell; The lower chamber shell includes a lower chamber shell body, a partition plate, an air intake duct and an exhaust duct. The top of the lower chamber shell body is connected to the upper chamber shell, and the inner chamber shell extends into the lower chamber shell body. The inner chamber of the lower chamber shell body is provided with a partition plate so that the inner chamber is divided into an air intake chamber and an exhaust chamber. The dust suction port at the bottom of the lower chamber shell body is provided with a bending portion, and there is a gap between the bottom of the partition plate and the bending portion, so that the air intake chamber is connected to the exhaust chamber. The lower chamber shell body is provided with an air intake duct and an exhaust duct connection, the air intake duct is connected to the air intake chamber, and the exhaust duct is connected to the exhaust chamber.

2. A dust removal mechanism according to claim 1, characterized in that: The bending portion comprises a horizontal section and a vertical section, wherein the horizontal section is arranged below the partition plate, and the vertical section is arranged on the side of the partition plate, and there is a gap between the horizontal section and the vertical section and the partition plate.

3. A dust removal mechanism according to claim 1, characterized in that: The inner cavities of the upper cavity shell and the inner cavity shell are communicated.

4. A dust removal mechanism according to claim 1, characterized in that: The upper cavity shell is connected to the lower cavity shell body and the inner cavity shell by bolts respectively.

5. A dust removal mechanism according to claim 1, characterized in that: The air intake pipe and the exhaust pipe are both provided with two groups.

6. A dust removal mechanism according to claim 5, characterized in that: The air inlet pipe and the air outlet pipe are symmetrically distributed around the lower chamber shell body.

7. A dust removal mechanism according to claim 1, characterized in that: The lower chamber shell body is connected to the air intake pipe and the exhaust pipe through threads.

8. A dust removal mechanism according to claim 1, characterized in that: A protective gas pipeline is arranged on the upper cavity shell.

9. A dust removal mechanism according to claim 1, characterized in that: The cross section of the inner cavity shell is trapezoidal in shape, and the upper end opening is larger than the lower end opening.

10. A laser welding device, characterized in that: It comprises a laser welder and a dust removal mechanism as described in any one of claims 1 to 9, wherein a port for outputting laser of the laser welder is connected to the upper cavity shell.

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