A battery pack welding nozzle

Abstract

This utility model discloses a welding nozzle for a battery casing, comprising a body, a connecting plate, a first guide shaft, a second guide shaft, and a welding nozzle. The first guide shaft is located on the upper surface of the connecting plate, and the second guide shaft is located on the lower surface of the connecting plate and directly opposite the first guide shaft. The welding nozzle is located at the end of the second guide shaft away from the connecting plate. The body also has a guide through hole that sequentially passes through the first guide shaft, the connecting plate, the second guide shaft, and the welding nozzle. The second guide shaft is tapered, with its outer diameter at the end near the connecting plate being larger than its outer diameter at the end away from the connecting plate. In use, the connecting plate is connected to the welding head, and the guide through hole communicates with the welding head. Welding is achieved through the welding nozzle. The tapered second guide shaft creates a clearance around its bottom end, effectively avoiding interference with the casing edge sheet metal wall, airtight valve, insulation test studs, and other structures during welding, ensuring a high welding yield.

Description

Technical Field

[0001] This utility model relates to the field of battery box welding technology, specifically to a battery box welding nozzle. Background Technology

[0002] In the production process of battery boxes, battery modules need to be welded and packaged. However, the existing technology adopts the process of welding the modules first and then hoisting them into the box for installation. The modules are heavy, the labor intensity is high, the products are easily damaged due to unstable handling, the hoisting operation is difficult, and the operation has high safety hazards. If the process of assembling the box first and then welding the modules to BSB is adopted, the integrated copper sleeve clamp will interfere with the sheet metal wall of the box edge, the airtight valve, the insulation test stud and other structures, and there will be blind spots for welding BSB. It is also incompatible with L-shaped aluminum busbars with protrusions, which has limitations. Utility Model Content

[0003] To address the shortcomings of existing technologies, this utility model provides a battery box welding nozzle, comprising:

[0004] The body includes a connecting plate, a first guide shaft, a second guide shaft, and a welding nozzle. The first guide shaft is located on the upper surface of the connecting plate, the second guide shaft is located on the lower surface of the connecting plate and is directly opposite the first guide shaft, and the welding nozzle is located at the other end of the second guide shaft. The body also has a guide through hole that passes through the first guide shaft, the connecting plate, the second guide shaft, and the welding nozzle in sequence.

[0005] The second guide shaft is tapered, with its outer diameter at the end near the connecting plate being larger than its outer diameter at the end away from the connecting plate, and the welding nozzle is located at the end away from the connecting plate.

[0006] According to one embodiment of the present invention, the bottom end of the welding nozzle is provided with multiple discharge notches, which are arranged circumferentially along one end of the welding nozzle.

[0007] According to one embodiment of the present invention, the connecting plate is provided with a plurality of connecting holes, which are located at the four corners of the connecting plate and are arranged circumferentially along the first guide axis.

[0008] According to one embodiment of the present invention, the connecting plate also has multiple limiting grooves, which are disposed on the upper surface of the connecting plate and are corresponding to the connecting holes.

[0009] According to one embodiment of the present invention, the discharge notch is an arc-shaped opening.

[0010] According to one embodiment of the present invention, the second guide shaft is conical.

[0011] According to one embodiment of the present invention, the first guide shaft, the connecting plate, the second guide shaft, and the welding nozzle are integrally formed from the same material.

[0012] The beneficial effects of this utility model are as follows: by setting the second guide shaft to be conical, the outer diameter of the end near the connecting plate is larger than the outer diameter of the end away from the connecting plate, that is, a clearance is formed around the bottom end of the second guide shaft, which can effectively avoid interference with the sheet metal wall of the box edge, the airtight valve, the insulation test stud and other structures during welding, thus ensuring the welding yield. Attached Figure Description

[0013] The accompanying drawings, which are included to provide a further understanding of this application and form part of this application, illustrate exemplary embodiments and are used to explain this application, but do not constitute an undue limitation of this application. In the drawings:

[0014] Figure 1 This is one of the structural schematic diagrams of the battery welding nozzle in the embodiment;

[0015] Figure 2 This is the second schematic diagram of the battery welding nozzle in the embodiment. Detailed Implementation

[0016] The following drawings will disclose several embodiments of this utility model. For clarity, many practical details will be described in the following description. However, it should be understood that these practical details should not be used to limit this utility model. That is, in some embodiments of this utility model, these practical details are not essential. In addition, for the sake of simplicity, some conventional structures and components will be shown in the drawings in a simple schematic manner.

[0017] Furthermore, in this utility model, the use of terms such as "first" and "second" is for descriptive purposes only and does not specifically refer to any order or sequence, nor is it intended to limit the utility model. They are merely used to distinguish components or operations described with the same technical terms and should not be construed as indicating or implying their relative importance or implicitly specifying the number of indicated technical features. Therefore, a feature defined with "first" or "second" may explicitly or implicitly include at least one of those features. Additionally, the technical solutions of various embodiments can be combined with each other, but only if they are feasible for those skilled in the art. If a combination of technical solutions is contradictory or impossible to implement, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection claimed by this utility model.

[0018] See Figures 1-2 , Figure 1 This is one of the structural schematic diagrams of the battery welding nozzle in the embodiment. Figure 2This is a second schematic diagram of the battery welding nozzle in the embodiment. The battery welding nozzle in this example includes a body 1, which comprises a connecting plate 11, a first guide shaft 12, a second guide shaft 13, and a welding nozzle 14. The first guide shaft 12 is located on the upper surface of the connecting plate 11, and the second guide shaft 13 is located on the lower surface of the connecting plate 11 and directly opposite the first guide shaft 12. The welding nozzle 14 is located at the other end of the second guide shaft 13. The body 1 also has a guide through hole 15, which sequentially passes through the first guide shaft 12, the connecting plate 11, the second guide shaft 13, and the welding nozzle 14. The second guide shaft 13 is conical, with its outer diameter near the connecting plate 11 being larger than its outer diameter away from the connecting plate 11. The welding nozzle 14 is located at its end away from the connecting plate 11. In this example, the second guide shaft 13 is conical. In use, the guide plate 11 is connected to the welding head, and the guide through hole 12 is connected to the welding head. Welding is performed through the welding nozzle 14. It can be understood that the second guide shaft 13 is tapered, and its outer diameter at the end near the connecting plate 11 is larger than its outer diameter at the end away from the connecting plate 11. That is, a clearance is formed around the bottom end of the second guide shaft 13, which can effectively avoid interference with the sheet metal wall of the housing edge, the airtight valve, the insulation test stud and other structures during welding, thus ensuring the welding yield.

[0019] Furthermore, the bottom end of the welding nozzle 14 is provided with multiple discharge notches 141, which are arranged circumferentially along one end of the welding nozzle 14. Preferably, the discharge notches 141 are arc-shaped. During welding, welding slag can be discharged outward through the discharge notches 141, effectively removing slag and solving the problems of adhesive interference and welding slag accumulation, thereby further improving the welding yield.

[0020] The connecting plate 11 has multiple connecting holes 111, which are located at the four corners of the connecting plate 11 and are arranged circumferentially along the first guide shaft 12. It is understood that, in use, screws can be used to fix the connecting plate 11 to the welding pressure head through the connecting holes 111.

[0021] Furthermore, the connecting plate 11 also has multiple limiting grooves 112, which are located on the upper surface of the connecting plate 11 and correspond to the connecting holes 111. In a specific implementation, springs can be installed in the limiting grooves 112. In this way, when the welding head presses down on the body 1 for welding, the spring force can further make the welding nozzle 14 fit tightly against the target position for welding.

[0022] Preferably, in this example, the first guide shaft 12, the connecting plate 11, the second guide shaft 13, and the welding nozzle 14 are integrally formed from the same material.

[0023] In summary, in this example, by setting the second guide shaft to a conical shape, a clearance is formed around the bottom end of the second guide shaft, which can effectively avoid interference with the sheet metal wall of the housing edge, the airtight valve, the insulation test stud, and other structures during welding, thus ensuring a high welding yield.

[0024] The above description is merely an embodiment of this utility model and is not intended to limit the scope of this utility model. Various modifications and variations can be made to this utility model by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principle of this utility model should be included within the scope of the claims of this utility model.

Claims

1. A case battery welding nozzle characterized by, include: The body (1) includes a connecting plate (11), a first guide shaft (12), a second guide shaft (13), and a welding nozzle (14). The first guide shaft (12) is located on the upper surface of the connecting plate (11), the second guide shaft (13) is located on the lower surface of the connecting plate (11) and is directly opposite to the first guide shaft (12), and the welding nozzle (14) is located at the other end of the second guide shaft (13). The body (1) also has a guide through hole (15), which passes through the first guide shaft (12), the connecting plate (11), the second guide shaft (13), and the welding nozzle (14) in sequence. The second guide shaft (13) is tapered, and its outer diameter at the end near the connecting plate (11) is larger than its outer diameter at the end away from the connecting plate (11). The welding nozzle (14) is located at the end away from the connecting plate (11).

2. The case battery welding tip of claim 1, wherein, The bottom end of the welding nozzle (14) is provided with multiple discharge notches (141), and the multiple discharge notches (141) are arranged circumferentially along one end of the welding nozzle (14).

3. The case battery welding tip of claim 1, wherein, The connecting plate (11) is provided with a plurality of connecting holes (111), which are located at the four corners of the connecting plate (11) and are arranged circumferentially along the first guide axis (12).

4. The case battery welding tip of claim 3, wherein, The connecting plate (11) also has a plurality of limiting grooves (112), which are provided on the upper surface of the connecting plate (11) and are provided corresponding to the connecting hole (111).

5. The case battery welding tip of claim 2, wherein, The discharge notch (141) is an arc-shaped opening.

6. The battery welding nozzle according to claim 1, characterized in that, The second guide shaft (13) is conical.

7. The battery welding nozzle according to claim 1, characterized in that, The first guide shaft (12), the connecting plate (11), the second guide shaft (13) and the welding nozzle (14) are integrally formed from the same material.

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