Welding protection device and welding system for energy storage battery

Abstract

The utility model relates to the field of energy storage battery assembly technology, in particular to a welding protection device, which comprises a cover body, a welding rod, a welding rod and a welding rod, a single side of an air knife air outlet of the air curtain conveying assembly is arranged in the cover body, and the air outlet direction of an air knife is approximately orthogonal to the incident direction of the laser beams; by arranging the air curtain conveying assembly, foreign matters can be subjected to an air knife perpendicular to laser beams when appearing, the problem that the galvanometer is polluted and damaged by sputtering in the welding process is solved, secondary damage to products and equipment is avoided, the structure is simple, and the production cost is low.

Description

Technical Field

[0001] The utility model relates to the technical field of energy storage battery assembly process, in particular to a welding protection device and a welding system for an energy storage battery. Background Art

[0002] There are many laser welding processes in the assembly process of the battery cells of related energy storage batteries, and galvanometer laser welding is widely used. The position and direction of the laser beam can be controlled by adjusting the amplitude and frequency of the galvanometer, which can achieve high-precision positioning and welding; at the same time, the laser output power of galvanometer laser welding can also change with the change of the amplitude and frequency of the galvanometer, thereby achieving high-efficiency welding. However, one disadvantage of galvanometer welding is that the effect of the use of welding shielding gas is not ideal. The galvanometer is sputtered during high-power welding, resulting in contamination and damage to the galvanometer.

[0003] In the related technology, a blowing method is adopted, that is, double-sided wind knives are designed under the galvanometer welding system to form an air curtain to prevent splashing to the lens. Although the double-sided wind knives can prevent splashing to the lens, the splashed foreign matter cannot be removed, which directly affects other devices of the equipment and even the product.

[0004] Another related technology uses a protective cover that is flat on the top and convex on the bottom. The cover is on the same axis as the welding beam, with the upper side installed on the field lens and the convex part on the lower side avoiding the range of the beam. Although this technology does not affect the welding process and can prevent spattering to the lens to a certain extent, it also has the problem of being unable to completely remove spattered foreign matter, and also affects other devices of the equipment and the processed products themselves.

[0005] Therefore, in order to effectively solve the technical problem of laser welding spattering to the lens, it is urgent to design a welding protection device and a welding system for energy storage batteries. Utility Model Content

[0006] The utility model provides a welding protection device and a welding system for an energy storage battery to solve the above problems.

[0007] In order to achieve the above-mentioned purpose, the embodiment of the utility model provides a welding protection device, comprising:

[0008] A cover body, the upper part of which is provided with a light beam injection hole;

[0009] The wind curtain conveying component has a wind knife air outlet which is arranged on one side inside the cover body, and the air outlet direction of the wind knife is approximately orthogonal to the incident direction of the laser beam.

[0010] Furthermore,

[0011] There are at least two wind knife air outlets which are stacked to form a double-layer air curtain.

[0012] Furthermore,

[0013] The wind knife air outlet is a strip-shaped outlet.

[0014] Furthermore,

[0015] Each of the air knife air outlets corresponds to a group of air pipe joints, and each group of air pipe joints includes at least one air pipe joint.

[0016] Furthermore,

[0017] A negative pressure dust removal connection port is arranged on the opposite side of the wind knife air outlet.

[0018] Furthermore,

[0019] A funnel transition portion is provided between the negative pressure dust removal connection port and the cover body;

[0020] The large opening of the funnel transition part is connected to the cover body, and the small opening thereof is connected to the negative pressure dust removal connection port.

[0021] Furthermore, a light beam emission hole is provided at the bottom of the cover body.

[0022] The utility model also provides a welding system for an energy storage battery, comprising:

[0023] A laser generator that generates a laser beam for welding; and

[0024] The welding protection device described above.

[0025] Furthermore, a negative pressure dust removal connection port is provided on the opposite side of the wind knife outlet;

[0026] The welding system also includes a dust collector connected to the negative pressure dust removal port.

[0027] Further, the welding system comprises:

[0028] A laser generator that generates a laser beam for welding; and

[0029] The welding protection device as described above; and

[0030] A dust collector is connected to the negative pressure dust removal connection port.

[0031] Compared with the prior art, the embodiments of the utility model have the following beneficial effects: by setting up an air curtain conveying assembly, when foreign matter appears, it can be subjected to a wind knife perpendicular to the laser beam, thereby solving the problem of contamination and damage to the galvanometer caused by sputtering during welding, avoiding secondary damage to the product and equipment, having a simple structure and low production cost. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] The utility model is further described below in conjunction with the accompanying drawings and embodiments.

[0033] Figure 1 A three-dimensional diagram of a preferred embodiment of a welding protection device of the utility model;

[0034] Figure 2 It is a structural schematic diagram of the optimal embodiment of the funnel transition part of the utility model;

[0035] Figure 3 It is a structural schematic diagram of the optimal embodiment of the negative pressure dust removal connection port of the utility model.

[0036] Among them, 1. cover body; 11. beam entrance hole; 12. beam exit hole; 2. wind curtain conveying assembly; 21. air pipe joint; 22. wind knife outlet; 3. funnel transition part; 4. negative pressure dust removal connection port; 5. laser beam. DETAILED DESCRIPTION

[0037] Now the utility model is further described in detail with reference to the accompanying drawings. These drawings are simplified schematic diagrams, which only illustrate the basic structure of the utility model in a schematic manner, and therefore only show the components related to the utility model.

[0038] See also Figure 1 , Figure 1 This is a stereoscopic diagram of the optimal embodiment of a welding protection device of the present utility model.

[0039] like Figure 1 As shown, the utility model provides a welding protection device, including: a cover body 1, a beam entrance hole 11 is arranged on the upper part of the cover body 1, and a beam exit hole 12 is arranged on the bottom of the cover body 1. A laser generator generates a laser beam 5 for welding, which enters through the beam entrance hole 11, enters the cover body 1, and is emitted from the beam exit hole 12.

[0040] Air curtain conveyor assembly 2

[0041] The wind curtain conveying assembly 2 includes a wind knife outlet 22, which is arranged on one side of the inside of the cover body 1. The wind knife outlet 22 is rectangular. At least two groups of wind knife outlets 22 are arranged, and they are stacked designs. One wind knife outlet 22 corresponds to a group of air pipe joints 21, and a group of air pipe joints 21 includes two joints. During the welding process, the air pipe joints 21 are ventilated to form a double-layer wind curtain through the wind knife outlet 22.

[0042] Negative pressure dust removal connection port 4

[0043] See also Figure 3 , Figure 3 This is a schematic diagram of the structure of the optimal embodiment of the negative pressure dust removal connection port of the utility model. Figure 3As shown, the negative pressure dust removal connection port 4 is arranged on the cover body 1 through the funnel transition portion 3, and the negative pressure dust removal connection port 4 is arranged on the opposite side of the wind knife outlet 22. The negative pressure dust removal connection port 4 is used to connect with the dust collector. During the welding process, the air pipe joint 21 is ventilated to form a double-layer wind curtain, and the dust collector is also turned on. If foreign matter splashes, the formed wind curtain can effectively prevent splashing to the galvanometer lens and transport the foreign matter into the funnel transition portion 3, which not only protects the galvanometer, but also removes the splashed foreign matter. The structure is simple and efficient.

[0044] Funnel transition 3

[0045] See also Figure 2 , Figure 2 This is a schematic diagram of the structure of the optimal embodiment of the funnel transition portion of the utility model. Figure 2 As shown, the funnel transition part 3 is arranged between the negative pressure dust removal connection port 4 and the cover body 1. The large diameter of the funnel transition part 3 is connected to the cover body 1, and one end of the small diameter is connected to the funnel transition part 3. The funnel transition part 3 is used to allow smoke, dust and foreign matter to be sucked out smoothly without dust accumulation and is easy to clean.

[0046] The utility model also provides a welding system for an energy storage battery, including a laser generator and a dust collector. The laser generator is used to generate a laser beam 5 for welding. The generated laser beam 5 is perpendicular to the direction of the double-layer air curtain. The dust collector is connected to a negative pressure dust removal connection port 4.

[0047] In summary, the beneficial effects of the utility model are as follows: by providing the funnel transition portion 3 and the wind curtain conveying assembly, the problem of contamination and damage to the galvanometer caused by sputtering during welding is solved, and secondary damage to the product and equipment is avoided. The structure is simple and the production cost is low.

[0048] Based on the above ideal embodiments of the utility model, the relevant staff can make various changes and modifications without deviating from the technical concept of the utility model through the above description. The technical scope of the utility model is not limited to the content of the specification, and its technical scope must be determined according to the scope of the claims.

Claims

1. A welding protection device, characterized in that: include: A cover body (1) having a light beam injection hole (11) disposed at its upper portion; The wind curtain conveying assembly (2) has a wind knife air outlet (22) which is arranged on one side inside the cover body (1), and the wind knife's air outlet direction is approximately orthogonal to the laser light beam (5)'s incident direction.

2. The welding protection device according to claim 1, characterized in that: There are at least two wind knife air outlets (22) which are stacked to form a double-layer wind curtain.

3. The welding protection device according to claim 2, characterized in that: The wind knife air outlet (22) is a strip-shaped outlet.

4. The welding protection device according to claim 2, characterized in that: Each of the air knife air outlets (22) corresponds to a group of air pipe joints (21), and each group of air pipe joints (21) includes at least two air pipe joints (21).

5. The welding protection device according to claim 1, characterized in that: A negative pressure dust removal connection port (4) is arranged on the side opposite to the wind knife air outlet (22).

6. The welding protection device according to claim 5, characterized in that: A funnel transition portion (3) is provided between the negative pressure dust removal connection port (4) and the cover body (1); The large opening of the funnel transition portion (3) is connected to the cover body (1), and the small opening thereof is connected to the negative pressure dust removal connection port (4).

7. The welding protection device according to any one of claims 1 to 6, characterized in that: The bottom of the cover body (1) is provided with a light beam emission hole (12).

8. A welding system for energy storage batteries, characterized in that: include: A laser generator for generating a laser beam for welding (5); and A welding protection device as claimed in any one of claims 1 to 4.

9. The welding system according to claim 8, characterized in that A negative pressure dust removal connection port (4) is provided on the side opposite to the wind knife air outlet (22); The welding system further comprises: a dust collector connected to the negative pressure dust removal connection port (4).

10. A welding system for energy storage battery, characterized in that: include: A laser generator for generating a laser beam for welding (5); and A welding protection device as claimed in claim 5 or 6; as well as A dust collector is connected to the negative pressure dust removal connection port (4).

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