Welding tool for explosion-proof piece of circular battery aluminum shell

Abstract

The utility model discloses a circular battery aluminum shell anti-explosion piece welding tool which comprises a bottom plate, the bottom plate is provided with a plurality of inner supporting blocks used for positioning an aluminum shell, the upper ends of the inner supporting blocks are provided with positioning holes, positioning cores are embedded in the positioning holes, the aluminum shell is arranged on the inner supporting blocks in a sleeved mode, and the aluminum shell is positioned through the positioning cores. A circle of flexible protective pad is arranged at the edge, close to the anti-explosion sheet, of the inner supporting block; and the vacuumizing device is used for adsorbing and fixing the anti-explosion piece, an air exhaust channel communicated to the bottom plate is arranged in the inner supporting block, the vacuumizing device extracts air in the aluminum shell through the air exhaust channel, negative pressure is formed, and the anti-explosion piece is adsorbed and fixed. In this way, the aluminum shell is sleeved on the inner supporting block, and the positioning core can quickly complete positioning. Negative pressure is formed through vacuumizing of the air exhaust channel, and meanwhile, the flexible protection pad is arranged on the edge, so that the anti-explosion piece can be effectively fixed and prevented from shaking, deviating and leaking in the tool moving process, and the edge of the anti-explosion piece can be protected against damage.

Description

Technical Field

[0001] This utility model relates to the field of lithium battery manufacturing equipment technology, and in particular to a welding fixture for a circular battery aluminum shell explosion-proof sheet. Background Technology

[0002] Currently, the aluminum casings of round batteries generally adopt a combination of a round cover plate and a round tube (a split structure). An explosion-proof valve is welded to the pressure relief port at the bottom of the aluminum casing to release the high pressure inside. However, because the cover plate and the aluminum casing are manufactured separately, poor fit between the two often occurs, resulting in a low product qualification rate and an inability to meet customer technical requirements.

[0003] To address these issues, a one-piece aluminum shell was developed, leading to a corresponding demand for welding fixtures for the one-piece aluminum shell and compatible explosion-proof elements. Traditional welding fixtures primarily employ mechanical clamping and positioning, which carries the risk of scratching the inner wall of the aluminum shell. They also have limitations in terms of positioning accuracy, ease of operation, and protection of the explosion-proof elements and the aluminum shell. Furthermore, the lack of a suitable positioning structure can easily cause the explosion-proof elements to shift during fixture movement. Utility Model Content

[0004] To address the technical problems existing in the background art, this utility model proposes a welding fixture for explosion-proof sheets of circular battery aluminum shells.

[0005] This utility model proposes a welding fixture for a circular battery aluminum shell explosion-proof sheet, including a base plate, wherein the base plate is provided with:

[0006] Multiple inner support blocks are used to position the aluminum shell. The upper end of the inner support block is provided with a positioning hole, and a positioning core is embedded in the positioning hole. The aluminum shell is sleeved on the inner support block and positioned by the positioning core. Furthermore, a flexible protective pad is provided on the inner support block near the edge of the explosion-proof sheet.

[0007] A vacuum device is used to adsorb and fix the explosion-proof sheet. The inner support block has an air extraction channel that connects to the base plate. The vacuum device extracts air from inside the aluminum shell through the air extraction channel to form a negative pressure, thereby adsorbing and fixing the explosion-proof sheet.

[0008] Preferably, it also includes an adjustable-angle dust collection hood located above the inner support block, the dust collection hood being connected to the dust purification device.

[0009] Preferably, the vacuum pumping device is fixed to the side of the base plate.

[0010] Preferably, the air extraction channel and the base plate are tightly fitted together by a sealing ring.

[0011] Preferably, a handle is also fixed to the side of the base plate.

[0012] Preferably, the base plate is equipped with height-adjustable support feet, each of which has an independent height adjustment knob.

[0013] Preferably, the inner support block is fixed to the base plate by pins and screws.

[0014] In summary, this utility model has the following beneficial effects: by fitting the aluminum shell onto the inner support block, the positioning core can be quickly positioned; by creating a vacuum through the air extraction channel, a negative pressure is formed, and combined with a flexible protective pad around the edge, the explosion-proof sheet can be effectively fixed to prevent it from shaking or shifting during tooling movement, while also protecting the edge of the explosion-proof sheet from damage. At the same time, the vacuum adsorption force is evenly distributed, avoiding deformation caused by traditional clamping.

[0015] Additional aspects and advantages of this invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description

[0016] Figure 1 This is a perspective view of a welding fixture for a circular battery aluminum shell explosion-proof sheet with a fixed aluminum shell, according to an embodiment of the present utility model.

[0017] Figure 2 This is a partial perspective view of a welding fixture for a circular battery aluminum shell explosion-proof sheet with a fixed aluminum shell, according to an embodiment of the present utility model.

[0018] Figure 3 An exploded view of a welding fixture for a circular battery aluminum shell explosion-proof sheet with a fixed aluminum shell, according to an embodiment of the utility model.

[0019] Figure 4 This is a schematic diagram of the structure of the dust collection hood and dust purification device according to an embodiment of the utility model.

[0020] In the picture:

[0021] 1. Base plate; 2. Inner support block; 3. Aluminum shell; 4. Positioning hole; 5. Positioning core; 6. Air extraction channel; 7. Smoke and dust collection hood; 8. Smoke and dust purification device; 9. Handle. Detailed Implementation

[0022] The embodiments of this utility model are described in detail below. Examples of these embodiments are illustrated in the accompanying drawings, wherein the same or similar symbols denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this utility model, and should not be construed as limiting this utility model.

[0023] like Figure 1-4As shown, the welding fixture for the explosion-proof sheet of a circular battery aluminum shell proposed in this embodiment includes a base plate 1, on which:

[0024] Multiple inner support blocks 2 are used to position the aluminum shell 3. The upper end of the inner support block 2 is provided with a positioning hole 4, and a positioning core 5 is embedded in the positioning hole 4. The aluminum shell 3 is sleeved on the inner support block 2 and positioned by the positioning core 5. The inner support block 2 is provided with another ring of flexible protective pad near the edge of the explosion-proof sheet. Preferably, the top of the positioning core 5 can also be provided with a 1:5 guide taper to guide and facilitate the positioning of the aluminum shell 3.

[0025] Among them, the flexible protective pad can be made of special rubber material, which can effectively prevent edge damage to the explosion-proof sheet due to hard contact with the tooling during the fixing process, and does not affect the adsorption effect of negative pressure on the explosion-proof sheet, thus further improving product quality.

[0026] Specifically, the inner support block 2 can be made of POM material, which effectively reduces the weight of the tooling and greatly reduces the risk of the inner wall of the aluminum shell 3 being scratched (the coefficient of friction of POM material is 60% lower than that of metal).

[0027] Meanwhile, the inner support block 2 is fixed to the base plate 1 by pins and screws.

[0028] A vacuum device is used to adsorb and fix the explosion-proof sheet. The inner support block 2 has an air extraction channel 6 connected to the base plate 1. The vacuum device extracts the air inside the aluminum shell 3 through the air extraction channel 6 to form a negative pressure, thereby adsorbing and fixing the explosion-proof sheet.

[0029] Furthermore, the vacuuming device is fixed to the side of the base plate 1. The specific structure of the vacuuming device can refer to existing structures, such as air pumps, etc., which will not be repeated in this article.

[0030] The air extraction channel 6 and the base plate 1 are tightly fitted together by a sealing ring, which makes the air extraction channel 6 a sealed cavity.

[0031] Thus, by fitting the aluminum shell 3 onto the inner support block, the positioning core 5 can be quickly positioned. A vacuum is created through the air extraction channel 6 to form a negative pressure. Combined with a flexible protective pad around the edge, this effectively fixes the explosion-proof sheet, preventing it from shaking or shifting during tooling movement. It also protects the edges of the explosion-proof sheet from damage. At the same time, the vacuum adsorption force is evenly distributed, avoiding deformation caused by traditional clamping.

[0032] Furthermore, such as Figure 4As shown, it also includes an adjustable-angle fume collection hood 7 located above the inner support block 2 (the angle can be adjusted by freely rotating a molded flexible hose), which is connected to a fume purification device 8. Specifically, the fume purification device 8 is fixed to the base plate 1. It can collect the fumes generated during welding in a timely manner and filter them through the purification device, reducing pollution to the working environment and protecting the health of operators.

[0033] It should be noted that the height of the dust collection hood 7 can also be adjusted (by means of a telescopic rod, and fine-tuning can also be achieved by retracting or extending a flexible hose). The specific structure of the height adjustment structure and the dust purification device 8 can be referred to the existing structure, and will not be repeated in this article.

[0034] It should be noted that, for ease of operation, a handle 9 is also fixed to the side of the base plate 1. Specifically, the handle 9 is welded to the base plate 1 at a 30° angle. The tilted handle 9 is designed to conform to the force curve of the operator's grip.

[0035] In this embodiment, height-adjustable support feet (not shown in the figure) are installed below the base plate 1, and each support foot is equipped with an independent height adjustment knob. The specific structure of the support foot can refer to existing structures, and will not be repeated here.

[0036] In summary, multiple circular aluminum shells 3 are respectively fitted onto multiple inner support blocks 2 to ensure accurate alignment between the aluminum shells 3 and the positioning cores 5, thus completing the positioning. Then, the vacuum device on the side of the base plate 1 is activated, and air is extracted through the air extraction channel 6 to create a negative pressure environment inside the fixture. This allows the explosion-proof sheet to be adsorbed and fixed in the corresponding position on the aluminum shell 3, while the flexible protective pad protects the edge of the explosion-proof sheet. Then, the welding equipment is activated to perform welding work. During the welding process, the angle of the fume collection hood 7 is adjusted according to the welding position to effectively collect welding fumes, which are then treated by the fume purification device 8. After welding is completed, the vacuum device is turned off to release the negative pressure, and the welded battery aluminum shell 3 is removed, completing the entire operation process.

[0037] During operation, the wear condition of each component of the tooling should be checked regularly, especially the connection between the positioning core 5 and the inner support block 2, the fixing point between the inner support block and the base plate 1, the sealing performance of the sealing ring, the wear degree of the flexible protective pad, the stability of the adjustable height support foot, and the filtration effect of the fume purification device 8. If any problems are found, they should be repaired or replaced in a timely manner to ensure the normal use of the tooling and the welding quality.

[0038] It should be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," and "circumferential" 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.

[0039] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection, an electrical connection, or a connection that allows communication between them; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0040] In this utility model, unless otherwise explicitly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "on top of," and "over" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0041] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. A welding fixture for explosion-proof sheets on circular battery aluminum shells, comprising a base plate, characterized in that, The base plate is provided with: Multiple inner support blocks are used to position the aluminum shell. The upper end of the inner support block is provided with a positioning hole, and a positioning core is embedded in the positioning hole. The aluminum shell is sleeved on the inner support block and positioned by the positioning core. Furthermore, a flexible protective pad is provided on the inner support block near the edge of the explosion-proof sheet. A vacuum device is used to adsorb and fix the explosion-proof sheet. The inner support block has an air extraction channel that connects to the base plate. The vacuum device extracts air from inside the aluminum shell through the air extraction channel to form a negative pressure, thereby adsorbing and fixing the explosion-proof sheet.

2. The welding fixture for the explosion-proof sheet of the circular battery aluminum shell according to claim 1, characterized in that, It also includes an adjustable-angle dust collection hood located above the inner support block, the dust collection hood being connected to the dust purification device.

3. The welding fixture for the explosion-proof sheet of the circular battery aluminum shell according to claim 1, characterized in that, The vacuum pumping device is fixed to the side of the base plate.

4. The welding fixture for the explosion-proof sheet of the circular battery aluminum shell according to claim 1, characterized in that, The air extraction channel and the base plate are tightly fitted together by a sealing ring.

5. The welding fixture for the explosion-proof sheet of the circular battery aluminum shell according to claim 1, characterized in that, A handle is also fixed to the side of the base plate.

6. The welding fixture for the explosion-proof sheet of the circular battery aluminum shell according to claim 1, characterized in that, The base plate is equipped with height-adjustable support feet, each with an independent height adjustment knob.

7. The welding fixture for the explosion-proof sheet of the circular battery aluminum shell according to claim 1, characterized in that, The inner support block is fixed to the base plate by pins and screws.

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