A welding pressure nozzle tool for lithium battery welding

Abstract

The utility model provides a kind of welding pressure nozzle tool for lithium battery welding, including upper and lower through copper nozzle and fixed support plate, the bottom inner wall of copper nozzle is horizontally provided with air inlet groove, the top of copper nozzle is provided with the air inlet channel of being set along the downward extension of copper nozzle outer wall, the lower end of air inlet channel is connected with the top of air inlet groove;The caliber of air inlet groove increases gradually from outside to inside, to promote the horizontal diffusion of protective gas, the outer wall of copper nozzle is also provided with dust extraction air outlet;Fixed support plate is movably connected with copper nozzle by connecting assembly.The utility model is provided with air inlet channel and horizontally arranged air inlet groove with caliber increasing gradually from outside to inside, which can guide the uniform output of a large amount of protective gas, effectively prevent the oxidation of welding surface and ensure the welding quality.

Description

Technical Field

[0001] This utility model relates to the field of battery processing technology, and in particular to a welding nozzle tooling for lithium battery welding. Background Technology

[0002] In welding applications involving lithium battery busbars and cell terminals, a tooling clamping nozzle is used to press the lithium battery busbar against the cell terminal, ensuring their contact and achieving fusion of the two welding materials after laser welding, resulting in a weld with the required effective width and depth. However, existing welding nozzle tooling has the following drawbacks: 1. The air inlet is too small, resulting in insufficient protective gas output; 2. The guiding structure is unreasonable, resulting in uneven distribution of the output gas. Utility Model Content

[0003] In view of the shortcomings of the existing technology, the purpose of this utility model is to provide a welding nozzle tooling for lithium battery welding, which is provided with an air inlet and a horizontally arranged air inlet groove with an increasing diameter from the outside to the inside, which can guide the protective gas to be output in large quantities and evenly, effectively preventing the oxidation of the welding surface and ensuring the welding quality.

[0004] The embodiments of this utility model are achieved through the following technical solutions: A welding nozzle fixture for lithium battery welding includes a copper nozzle extending vertically and a fixed support plate. The bottom inner wall of the copper nozzle has a horizontally arranged air inlet groove, and the top of the copper nozzle has an air inlet channel extending downwards along the outer wall of the copper nozzle. The lower end of the air inlet channel is connected to the top of the air inlet groove. The diameter of the air inlet groove increases gradually from the outside to the inside, promoting horizontal diffusion of the protective gas. The outer wall of the copper nozzle also has a dust extraction outlet. The fixed support plate is movably connected to the copper nozzle via a connecting assembly.

[0005] According to a preferred embodiment, the inner port of the air intake slot is arc-shaped.

[0006] According to a preferred embodiment, the dust extraction outlet is located on the side opposite to the air inlet slot, and the dust extraction outlet is connected to an air outlet pipe, the top of which penetrates the fixed support plate.

[0007] According to a preferred embodiment, the connecting assembly includes an elastic element and a guide post. The guide post is disposed at the bottom of the fixed support plate, and the lower end of the guide post movably passes through the top of the copper nozzle and extends into the copper nozzle. The elastic element is sleeved on the guide post.

[0008] According to a preferred embodiment, a height measuring column is vertically provided on the side wall of the copper nozzle, and the height measuring column vertically penetrates the fixed support plate.

[0009] According to a preferred embodiment, each guide post is fitted with an elastic element, which is a spring, and at least four guide posts are evenly distributed on the top of the copper nozzle.

[0010] According to a preferred embodiment, the top of the copper nozzle has a plurality of guide grooves that are adapted to the guide post. The guide grooves are provided with a first guide groove and a second guide groove above and below. When the guide post is subjected to force, it can extend into the second guide groove.

[0011] According to a preferred embodiment, the vent pipe is bent, and a limit block is provided on the outer wall of the vent pipe.

[0012] According to a preferred embodiment, the air intake slot is arranged in a fan shape when viewed from above, and the air intake duct is arranged vertically.

[0013] The technical solution of this utility model embodiment has at least the following advantages and beneficial effects: This utility model is equipped with an air inlet and horizontally arranged air inlets with gradually increasing diameters from the outside to the inside, which can guide a large amount of protective gas to be output evenly, effectively preventing oxidation of the welding surface and ensuring welding quality. Attached Figure Description

[0014] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of this utility model and should not be regarded as a limitation on the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.

[0015] Figure 1 This is a schematic diagram of the welding nozzle tooling for lithium battery welding provided in an embodiment of the present invention; Figure 2 A three-dimensional structural diagram of the copper nozzle provided in an embodiment of this utility model; Figure 3 for Figure 1 A schematic diagram of the cross-sectional structure; Figure 4 for Figure 1 Another cross-sectional structural diagram.

[0016] Icons: 1. Copper nozzle; 2. Fixed support plate; 3. Air inlet groove; 4. Air inlet duct; 5. Dust extraction outlet; 6. Air outlet pipe; 7. Elastic component; 8. Guide column; 9. Height measuring column; 10. First guide groove; 11. Second guide groove; 12. Limiting block. Detailed Implementation

[0017] To better understand and implement this invention, the technical solutions in the embodiments of this invention will be clearly and completely described below with reference to the accompanying drawings.

[0018] In the description of this utility model, it should be noted that the terms "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", and "outer" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0019] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains. The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. Example

[0020] Please refer to Figures 1 to 4 A welding nozzle tooling for lithium battery welding includes a copper nozzle 1 that runs vertically through the nozzle and a fixed support plate 2. The bottom inner wall of the copper nozzle 1 is horizontally provided with an air inlet groove 3, and the top of the copper nozzle 1 is provided with an air inlet channel 4 that extends downward along the outer wall of the copper nozzle 1. The lower end of the air inlet channel 4 is connected to the top of the air inlet groove 3. The diameter of the air inlet groove 3 increases from the outside to the inside to promote the horizontal diffusion of protective gas. The outer wall of the copper nozzle 1 is also provided with a dust extraction outlet 5. The fixed support plate 2 is movably connected to the copper nozzle 1 through a connecting assembly.

[0021] Preferably, the inner port of the air intake groove 3 is arc-shaped.

[0022] Preferably, the dust extraction outlet 5 is located on the opposite side of the air inlet 3, and the dust extraction outlet 5 is connected to the air outlet pipe 6, with the top of the air outlet pipe 6 penetrating through the fixed support plate 2.

[0023] Preferably, the connecting assembly includes an elastic element 7 and a guide post 8. The guide post 8 is disposed at the bottom of the fixed support plate 2. The lower end of the guide post 8 can movably pass through the top of the copper nozzle 1 and extend into the copper nozzle 1. The elastic element 7 is sleeved on the guide post 8.

[0024] Preferably, a height measuring column 9 is vertically provided on the side wall of the copper nozzle 1, and the height measuring column 9 vertically penetrates the fixed support plate 2.

[0025] Preferably, each guide post 8 is fitted with an elastic element 7, which is a spring, and at least four guide posts 8 are evenly distributed on the top of the copper nozzle 1.

[0026] Preferably, the top of the copper nozzle 1 is evenly distributed with a number of guide grooves that are adapted to the guide post 8. The guide grooves are provided with a first guide groove 10 and a second guide groove 11 above and below. When the guide post 8 is subjected to force, it can extend into the second guide groove 11.

[0027] Preferably, the vent pipe 6 is curved, and a limit block 12 is provided on the outer wall of the vent pipe 6.

[0028] Preferably, the air intake slot 3 is arranged in a fan shape when viewed from above, and the air intake duct 4 is arranged vertically.

[0029] The working principle of this utility model: In this embodiment, a vertically arranged air inlet duct 4 and a horizontally arranged air inlet groove 3 with an increasing diameter from the outside to the inside are provided. The air inlet groove 3 is fan-shaped. After the protective gas is vertically delivered to the center of the fan shape through the air inlet duct 4, it is impacted and diffused along the direction of the gradually increasing horizontal diameter of the air inlet groove 3 (from the outside to the inside). The diffusion effect is uniform, which can guide a large amount of protective gas to be output evenly, effectively preventing oxidation of the welding surface and ensuring welding quality. To mitigate the impact of the protective gas in the air inlet duct 4 on the air inlet groove 3, a groove can be provided at the bottom of the air inlet duct 4 to buffer the impact of the protective gas into the air inlet groove 3. Finally, the protective gas is output towards the inner wall of the bottom of the copper nozzle 1 through the air inlet groove 3 to prevent oxidation of the welding surface, thereby better ensuring welding quality.

[0030] The first guide groove 10 and the second guide groove 11 are provided to ensure that the guide post 8 can extend into the second guide groove 11 after being subjected to force. The elastic element 7, which is a spring, can effectively buffer the pressure and reaction force on the parts, effectively protecting the tooling fixture and the parts. The limiting block 12 is used to limit the position of the vent pipe 6 relative to the fixed support plate 2. The bottom of the copper nozzle 1 can press against the busbar of the lithium battery, so that the busbar and the terminal post on the cell are in contact. When pressing down for welding, the spring can ensure that the copper nozzle 1 continuously presses against the welding material, and can also ensure that each copper nozzle 1 is in a pressed state with the part to be welded.

[0031] The technical means disclosed in this utility model are not limited to those disclosed in the above embodiments, but also include technical solutions composed of any combination of the above technical features. It should be noted that those skilled in the art can make various improvements and modifications without departing from the principle of this utility model, and these improvements and modifications are also considered within the scope of protection of this utility model.

Claims

1. A welding nozzle tooling for lithium battery welding, characterized in that, The device includes a copper nozzle that runs vertically through the body and a fixed support plate. The bottom inner wall of the copper nozzle has a horizontally arranged air inlet groove, and the top of the copper nozzle has an air inlet channel extending downwards along the outer wall of the copper nozzle. The lower end of the air inlet channel is connected to the top of the air inlet groove. The diameter of the air inlet groove increases gradually from the outside to the inside, promoting horizontal diffusion of the protective gas. The outer wall of the copper nozzle also has a dust extraction outlet. The fixed support plate is movably connected to the copper nozzle via a connecting assembly.

2. The welding nozzle tooling for lithium battery welding according to claim 1, characterized in that, The inner port of the air intake slot is arc-shaped.

3. The welding nozzle tooling for lithium battery welding according to claim 1, characterized in that, The dust extraction outlet is located on the opposite side of the air inlet slot, and the dust extraction outlet is connected to an air outlet pipe, the top of which passes through the fixed support plate.

4. The welding nozzle tooling for lithium battery welding according to claim 1, characterized in that, The connecting assembly includes an elastic element and a guide post. The guide post is disposed at the bottom of the fixed support plate. The lower end of the guide post movably passes through the top of the copper nozzle and extends into the copper nozzle. The elastic element is sleeved on the guide post.

5. The welding nozzle tooling for lithium battery welding according to claim 1, characterized in that, A height measuring column is vertically installed on the side wall of the copper nozzle, and the height measuring column vertically penetrates the fixed support plate.

6. The welding nozzle tooling for lithium battery welding according to claim 4, characterized in that, Each of the guide posts is fitted with an elastic element, which is a spring, and at least four guide posts are evenly distributed on the top of the copper nozzle.

7. The welding nozzle tooling for lithium battery welding according to claim 4, characterized in that, The top of the copper nozzle has several guide grooves that are evenly distributed to match the guide post. The guide grooves are provided with a first guide groove and a second guide groove above and below. When the guide post is subjected to force, it can extend into the second guide groove.

8. The welding nozzle tooling for lithium battery welding according to claim 3, characterized in that, The vent pipe is bent, and a limit block is provided on the outer wall of the vent pipe.

9. The welding nozzle tooling for lithium battery welding according to claim 2, characterized in that, The air intake slot is fan-shaped when viewed from above, and the air intake duct is vertically arranged.

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