Opposite angle edge welding nozzle for welding soft package battery shell

Abstract

The utility model relates to the technical field of battery processing, in particular to a diagonal edge welding nozzle for welding a soft package battery shell, which is provided with a bearing plate for supporting and a welding nozzle for adapting to long diagonal edges of the shell, and the bearing plate is connected with the welding nozzle through a connecting piece; the welding nozzle comprises a welding frame connected with the connecting piece, a protection head is arranged at the end, away from the bearing plate, of the welding frame, the protection head and the welding frame are both hollow, and the length of the protection head is larger than that of the long diagonal edge of the shell. The problem that in the prior art, a welding nozzle cannot adapt to long diagonal edges of a shell, and the welding quality and efficiency of the shell are affected is solved.

Description

Technical Field

[0001] The utility model relates to the technical field of battery processing, in particular to a diagonal edge welding nozzle for welding a soft-pack battery shell. Background Art

[0002] During the welding process of soft-pack batteries, a protective casing must be welded onto the outside of the battery to ensure the safety and stability of the battery cells. This protective casing not only protects the battery cells from external environmental factors such as mechanical impact and chemical corrosion, but also improves the overall performance and service life of the battery. However, existing battery welding protective nozzles have significant drawbacks in practical applications.

[0003] The diverse structure and size of soft-pack battery protective casings, particularly the long diagonal edges, place higher demands on welding processes. Existing battery welding nozzles are not well-suited to these long diagonal edges, making it difficult to precisely weld these edges. This not only affects welding quality and efficiency but can also lead to a loose connection between the protective casing and the battery cell, failing to achieve the desired protective effect. Utility Model Content

[0004] The purpose of the utility model is to solve the problem in the prior art that the welding nozzle cannot adapt to the long diagonal edge of the shell, thereby affecting the shell welding quality and efficiency, and to provide a diagonal edge welding nozzle for welding the soft pack battery shell.

[0005] In order to solve the above-mentioned technical problems, the utility model adopts the following technical solutions: a diagonal edge welding nozzle for welding a soft-pack battery shell, which comprises a supporting plate and a welding nozzle for adapting to the long diagonal edge of the shell, wherein the supporting plate and the welding nozzle are connected together by a connecting piece;

[0006] The welding nozzle includes a welding frame connected to a connector. A protective head is provided at the end of the welding frame away from the bearing plate. Both the protective head and the welding frame are hollow, and the length of the protective head is greater than the long diagonal side of the shell.

[0007] As a further optimization of the diagonal edge welding nozzle for welding a soft-pack battery shell of the utility model: the protective head is M-shaped, and the center of the protective head is connected to the welding frame to form a welding channel. The welding channel is for the laser to pass through to weld the long diagonal edges of the shell, and the two sides of the end of the protective head are used to guide the gas and limit the welding slag.

[0008] As a further optimization of the diagonal welding nozzle for welding the soft-pack battery shell of the utility model: a through hole is opened at the end of the welding frame away from the protective head, the through hole penetrates the welding frame along the width direction of the welding frame, and the through hole is connected to the gas collecting pipe provided on the welding frame for extracting harmful gases.

[0009] As a further optimization of the diagonal welding nozzle for welding the soft-pack battery housing of the present utility model: The lengths of the protection head and the welding frame are 1.1 to 1.3 times the length of the long diagonal side of the housing.

[0010] As a further optimization of the diagonal welding nozzle for welding the soft-pack battery housing of the present utility model: A first gas guiding frame and a second gas guiding frame are provided between the protection head and the welding frame, and the first gas guiding frame and the second gas guiding frame are used to eject protective gas.

[0011] As a further optimization of the diagonal welding nozzle for welding the soft-pack battery housing of the present utility model: The gas ejection ports of the first gas guiding frame and the second gas guiding frame are both arranged towards the center of the protection head.

[0012] As a further optimization of the diagonal welding nozzle for welding the soft-pack battery housing of the present utility model: The connecting member includes a support plate vertically connected to the bearing plate. The support plate is provided with a central hole and an angular groove surrounding the central hole. The central hole and the angular groove are both connected together by bolts to a telescopic cylinder, and the telescopic end of the telescopic cylinder is connected to the welding frame.

[0013] As a further optimization of the diagonal welding nozzle for welding the soft-pack battery housing of the present utility model: An arc-shaped guiding groove is formed on the support plate, and the guiding groove can cooperate with the central hole to guide the rotation of the telescopic cylinder.

[0014] As a further optimization of the diagonal welding nozzle for welding the soft-pack battery housing of the present utility model: An indicator mark is provided on the side of the support plate facing away from the telescopic cylinder, and the indicator mark is arranged corresponding to the angular groove.

[0015] Compared with the prior art, the present utility model has the following beneficial effects:

[0016] The present utility model adapts to the long diagonal side of the housing by providing a protection head included in the welding nozzle. At the same time, by providing the first gas guiding frame and the second gas guiding frame, the protective gas transmitted by the first gas guiding frame and the second gas guiding frame is stably blown to the long diagonal side of the housing to assist in the stable welding of the long diagonal side of the housing. The setting of the protection head can also limit the welding slag during the welding process of the long diagonal side, and at the same time can guide the harmful gases generated during the welding process to assist in the collection and treatment of the harmful gases. Thereby adapting to the long diagonal side of the housing to ensure the welding quality and efficiency of the housing. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 is a front view structural schematic diagram of the present utility model;

[0018] Figure 2 is a first sectional structural schematic diagram of the present utility model;

[0019] Figure 3 This is a schematic diagram of the second cross-sectional structure of the present utility model;

[0020] Markings in the figure: 1. Loading plate; 2. Connecting part; 201. Support plate; 202. Center hole; 203. Angle groove; 204. Guide groove; 205. Indicator; 206. Telescopic cylinder; 3. Gas collecting pipe; 4. Welding nozzle; 401. Welding frame; 402. First gas guide frame; 403. Second gas guide frame; 404. Protective head. DETAILED DESCRIPTION

[0021] In order to better understand the present invention, the content of the present invention is further explained below in conjunction with embodiments, but the content of the present invention is not limited to the following embodiments.

[0022] like Figure 1 As shown, a diagonal edge welding nozzle for welding a soft-pack battery shell has a supporting plate 1 and a welding nozzle 4. Two connectors 2 are designed on the supporting plate 1. The function of these two connectors 2 is to ensure the stability and accuracy of the welding nozzle 4. The welding nozzle 4 is set between the two connectors 2. When welding is required, the laser welding head will accurately pass through the welding nozzle 4 to perform efficient and accurate welding on the long diagonal edge of the battery shell. The design of the welding nozzle 4 is thoughtful, including a welding frame 401 connected to the connector 2 as a support. Its length is carefully calculated to be 1.2 times the length of the long diagonal edge to perfectly match the displacement of the welding head, thereby achieving efficient welding of the long diagonal edge of the shell.

[0023] A protective head 404 is provided at the end of the welding nozzle 4 facing away from the carrier plate 1. Figure 2 As shown, its cross-section exhibits a unique M-shaped structure. The center of the protective head 404 is connected to the central hole 202 of the welding frame 401, providing a smooth passage for the laser head to pass through and weld the corresponding long diagonal edge of the protective head 404. At the same time, the protective head 404 can effectively limit the dispersion of welding gas and the splash of welding slag, thereby protecting the operator and equipment.

[0024] To further improve the efficiency and safety of the welding process, a first gas guide frame 402 and a second gas guide frame 403 are sequentially provided between the protective head 404 and the end of the welding frame 401 facing away from the carrier plate 1, and both are connected to a protective gas transmission pipe. This design plays an auxiliary role in the process of laser head welding long diagonal edges, ensuring the smooth progress of the welding process. The gas outlets of the first gas guide frame 402 and the second gas guide frame 403 are both arranged toward the center of the protective head 404, so that they can stably impact the long diagonal edge welding position, thereby helping to ensure the welding quality of the long diagonal edge welding position. In addition, a through hole is opened in the welding frame 401 near the carrier plate 1. The through hole is arranged along the width direction of the welding frame 401, and the welding frame 401 is provided with a gas collecting pipe 3 connected to the through hole. The gas collecting pipe 3 is connected to a hose with negative pressure inside. This allows the harmful gases generated by welding to be effectively collected and centrally treated during the welding of the long diagonal edges of the shell, thereby protecting the battery processing environment and reducing potential harm to operators and the environment.

[0025] like Figure 1 and Figure 3 As shown, the connecting member 2 includes a support plate 201 vertically fixed to the supporting plate 1. The support plate 201 is not only provided with a center hole 202, but also with an angled slot 203 surrounding the center hole 202. These center hole 202 and the angled slot 203 are connected to a telescopic cylinder 206 via bolts. The telescopic end of the telescopic cylinder 206 is connected to the welding frame 401. This design allows the operator to easily adjust the angle position of the telescopic cylinder 206 and the welding nozzle 4 to adapt to the welding operation of shells of different heights. The side of the support plate 201 facing away from the telescopic cylinder 206 is provided with an indicator mark 205 corresponding to the angled slot 203. The design of the indicator mark 205 allows the operator to relatively quickly adjust the angle of the protective head 404 to the appropriate position, improving the working efficiency. In actual use, the two telescopic cylinders 206 can retract during the shell flipping process, effectively reducing the impact of the protective head 404 on the shell flipping process. At the same time, they can also be reset to ensure that after the shell is flipped into place, the protective head 404 can quickly approach the long diagonal side of the shell, thereby smoothly carrying out the welding process. A guide groove 204 is provided on the side of the support plate 201 facing the welding frame 401. The guide groove 204 cooperates with the center hole 202 to limit the rotation of the telescopic cylinder 206 during the adjustment of the telescopic cylinder 206 and maintain the rotation stability of the telescopic cylinder 206, thereby improving the accuracy and stability after adjustment by the operator.

[0026] The above describes the specific embodiments of the present invention. It should be understood that the present invention is not limited to the above specific embodiments, and those skilled in the art may make various modifications or variations within the scope of the claims, which do not affect the essence of the present invention.

Claims

1. A diagonal edge welding nozzle for welding the outer shell of a soft-pack battery, characterized in that: It has a bearing plate (1) for support and a welding nozzle (4) for adapting to the long diagonal side of the shell. The bearing plate (1) and the welding nozzle (4) are connected together by a connecting member (2); The welding nozzle (4) includes a welding frame (401) connected to the connecting member (2). A protective head (404) is provided at the end of the welding frame (401) facing away from the bearing plate (1). Both the protective head (404) and the welding frame (401) are hollow, and the length of the protective head (404) is greater than the long diagonal side of the shell.

2. The diagonal edge welding nozzle for welding the soft-pack battery case according to claim 1, characterized in that: The protective head (404) is M-shaped. A welding channel is formed by connecting the center of the protective head (404) to the welding frame (401). The welding channel allows the laser to pass through for welding the long diagonal side of the shell. Both sides of the end of the protective head (404) are used to guide the gas and limit the welding slag.

3. The diagonal edge welding nozzle for welding the soft-pack battery case according to claim 1, characterized in that: A through hole is provided at the end of the welding frame (401) facing away from the protective head (404). The through hole penetrates the welding frame (401) along the width direction of the welding frame (401), and the through hole is communicated with a gas collecting pipe (3) provided on the welding frame (401) for sucking harmful gases.

4. The diagonal edge welding nozzle for welding the outer shell of a soft-pack battery according to claim 1, characterized in that: The lengths of the protective head (404) and the welding frame (401) are 1.1 - 1.3 times the length of the long diagonal side of the shell.

5. The diagonal edge welding nozzle for soft-pack battery case welding according to claim 1, wherein: A first air guide frame (402) and a second air guide frame (403) are provided between the protective head (404) and the welding frame (401). The first air guide frame (402) and the second air guide frame (403) are used to eject protective gas.

6. The diagonal edge welding nozzle for soft-pack battery case welding according to claim 5, wherein: The ejection ports of the first air guide frame (402) and the second air guide frame (403) are both arranged towards the center of the protective head (404).

7. A diagonal edge welding nozzle for welding the outer shell of a soft-pack battery according to claim 1, characterized in that: The connecting member (2) includes a support plate (201) vertically connected to the bearing plate (1). A central hole (202) and an angular groove (203) surrounding the central hole (202) are provided on the support plate (201). Both the central hole (202) and the angular groove (203) are connected to a telescopic cylinder (206) by bolts. The telescopic end of the telescopic cylinder (206) is connected to the welding frame (401).

8. The diagonal edge welding nozzle for welding the soft-pack battery housing according to claim 7, characterized in that: An arc-shaped guide groove (204) is provided on the support plate (201). The guide groove (204) can cooperate with the central hole (202) to guide the rotation of the telescopic cylinder (206).

9. The diagonal edge welding nozzle for soft-pack battery case welding according to claim 7, characterized in that: An indicator mark (205) is provided on the side of the support plate (201) facing away from the telescopic cylinder (206). The indicator mark (205) is arranged corresponding to the angular groove (203).

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