Tool for welding power battery cover

Abstract

The invention belongs to the technical field of battery cover welding, and discloses a tool for power battery cover welding, which comprises a main body and a laser welding assembly, and further comprises a fixing mechanism arranged in the main body; wherein the fixing mechanism comprises a sliding rail fixedly connected to the interior of the main body, and the surface of the sliding rail is slidably sleeved with two sliding blocks; two sliding blocks can be driven to move relatively on the surface of a sliding rail through a hinge rod, the sliding blocks can drive connecting rods and clamps to move towards the surface of a battery shell, then the two clamps make contact with the surface of the battery shell, the surface of the battery shell makes contact with the inner walls of one sides of the two clamps, and therefore the battery shell is positioned and fixed; and finally, a first lead screw drives two clamps to move towards the surface of the battery shell through a first driving motor, then the battery shell is positioned, the two clamps make contact with the battery shell, uniform pressure is applied to the battery shell for fixing, and then the welding quality is improved.

Description

Technical Field

[0001] This invention belongs to the field of battery cover welding technology, specifically a tooling for welding power battery covers. Background Technology

[0002] With the explosive growth of the global new energy vehicle industry, the manufacturing precision and production efficiency of power batteries, as core components, directly affect the overall vehicle performance and market competitiveness. As a crucial step in battery encapsulation, the welding of the power battery cover requires specialized welding equipment.

[0003] Currently, the traditional tooling for welding battery covers first places the battery casing to be welded stably on the worktable, and then uses clips to fix the battery cover. After the fixing process is completed, the laser welding assembly is driven to perform welding operations on the connection between the battery cover and the battery casing.

[0004] However, in actual production operations, traditional clips rely on elasticity to secure the battery cover. It's difficult to achieve a uniform and precise distribution of the elastic force. When the clips attempt to secure a round battery cover, some clips may apply excessive pressure to certain areas of the cover due to excessive elasticity, causing minor deformation; while others may lack sufficient elasticity and fail to effectively secure the cover, leading to loosening during the fixing process. This results in the battery cover not maintaining absolute stability during fixing, thus reducing the quality of the weld. Summary of the Invention

[0005] To address the problems mentioned in the background art, the present invention provides a tooling for welding power battery covers.

[0006] To achieve the above objectives, the present invention provides the following technical solution: a tooling for welding power battery covers, comprising a main body and a laser welding assembly, and further comprising:

[0007] The fixing mechanism is located inside the main body;

[0008] The fixing mechanism includes a slide rail fixedly connected inside the main body. Two sliders are slidably mounted on the surface of the slide rail. Two connecting rods are fixedly installed on the top ends of the two sliders. Two clamps located at the top end of the main body are fixedly installed on the top ends of the two connecting rods.

[0009] The driving component is located inside the main body.

[0010] Preferably, the drive assembly includes a motor fixedly connected inside the main body, a lead screw fixedly mounted on the output end of the motor, a movable plate threadedly connected to the surface of the lead screw, and the movable plate and the two sliders are hinged together by hinge rods.

[0011] Preferably, it further includes:

[0012] A storage component is disposed at the top of the main body. The storage component includes a storage box fixedly connected to the top of the main body. An elastic element is elastically connected inside the storage box, and an abutment plate is fixedly installed at one end of the elastic element.

[0013] The actuation mechanism is located inside one side of the laser welding assembly.

[0014] Preferably, the pushing mechanism includes a square shell fixedly connected to the inside of one side of the laser welding assembly, a second lead screw slidably connected inside the square shell, a second motor fixedly installed on one side of the outer surface of the square shell, a first gear fixedly installed at the output end of the second motor, a limiting ring rotatably connected inside one end of the square shell on the surface of the second lead screw, a second gear fixedly installed on one side of the limiting ring on the surface of the second lead screw, and the second gear and the second lead screw being threadedly connected, and a pushing plate located inside the storage box on one side of the second lead screw.

[0015] Preferably, it further includes:

[0016] A limiting component is disposed inside a square shell. The limiting component includes a limiting groove formed inside the square shell, and a limiting plate located inside the limiting groove is fixedly installed at one end of the second lead screw.

[0017] Preferably, it further includes:

[0018] A conveying assembly is disposed inside the main body. The conveying assembly includes a synchronous belt rotatably connected to it, a gear three fixedly installed on one side of the synchronous belt, a rack slidably connected inside the main body, a connecting plate fixedly installed on one side of the rack, and the top end of the connecting plate fixedly connected to the bottom end of the limiting plate.

[0019] Preferably, it further includes:

[0020] A rotating assembly is disposed on both sides of the outer surface of the slide rail. The rotating assembly includes a slide groove formed on both sides of the outer surface of the slide rail, and a roller located inside the slide groove is rotatably connected to the inside of the slider.

[0021] Preferably, a contact plate is provided on one side of the push plate, and the surface of the contact plate can contact one side of the battery casing inside the storage box.

[0022] Preferably, a square hole is provided on one side of the connecting rod, and the rack can move inside the square hole.

[0023] Preferably, both clamps are L-shaped, and the opposite sides of both clamps are smooth.

[0024] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0025] This invention uses a drive motor to rotate a lead screw, causing a moving plate to slide on the surface of the lead screw. The lead screw then rotates a hinge rod, which in turn causes two sliders to move relative to each other on the slide rail surface. The sliders then move a connecting rod and clamps toward the surface of the battery casing. The two clamps then contact the surface of the battery casing, and the surface of the battery casing contacts the inner wall of one side of the two clamps, thus positioning and fixing the battery casing. Finally, the drive motor drives the lead screw to move the two clamps toward the surface of the battery casing, thereby positioning the battery casing. The two clamps then apply uniform pressure to the battery casing for fixation, thus improving the welding quality.

[0026] This invention uses a second drive motor to rotate a first gear, which in turn drives a second gear to rotate. A second lead screw slides along the internal thread of the second gear, and then the second motor drives a push plate to slide into the storage box. The moving push plate pushes the battery casing inside the storage box to move between the clamps. Finally, the second drive motor causes the second lead screw and the push plate to push the battery casing to be welded between the two clamps, thus facilitating the welding of the battery casing and improving welding efficiency.

[0027] This invention uses a limiting plate to move a connecting plate and a rack. The rack then drives a third gear and a synchronous belt to rotate, moving the welded battery casing outside the two fixtures. The lead screw and a push plate then push the battery casing to be welded between the two fixtures, thus completing the replacement of the battery casing. Finally, the moving lead screw and the limiting plate drive the connecting plate to move, transporting the welded battery casing outside the two fixtures, facilitating battery casing replacement and improving the continuity of welding. Attached Figure Description

[0028] Figure 1 This is a schematic diagram of the structure of the present invention;

[0029] Figure 2 This is a cross-sectional schematic diagram of the main body of the present invention;

[0030] Figure 3 This is a schematic diagram of the fixing mechanism of the present invention;

[0031] Figure 4 This is a schematic diagram illustrating the driving component of the present invention;

[0032] Figure 5 This is a cross-sectional schematic diagram of the square shell of the present invention;

[0033] Figure 6 For the present invention Figure 5 Enlarged diagram of point A in the diagram;

[0034] Figure 7 This is a schematic diagram illustrating the actuator of the present invention;

[0035] Figure 8 This is a schematic diagram illustrating the storage component of the present invention.

[0036] In the diagram: 1. Main body; 2. Laser welding assembly; 3. Fixing mechanism; 301. Slide rail; 302. Slider; 303. Connecting rod; 304. Fixture; 4. Drive assembly; 401. Motor 1; 402. Lead screw 1; 403. Moving plate; 404. Hinge rod; 5. Storage assembly; 501. Storage box; 502. Elastic element; 503. Contact plate; 6. Pushing mechanism; 601. Square shell; 602. Lead screw 2; 603. Motor 2; 604. Gear 1; 605. Limiting ring; 606. Gear 2; 607. Pushing plate; 7. Conveying assembly; 701. Synchronous belt; 702. Gear 3; 703. Connecting plate; 704. Rack; 8. Rotating assembly; 801. Slide groove; 802. Roller; 9. Limiting assembly; 901. Limiting groove; 902. Limiting plate; 10. Contact plate. Detailed Implementation

[0037] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0038] like Figures 1 to 8 As shown, the present invention provides a tooling for welding power battery covers, including a main body 1 and a laser welding assembly 2, and further comprising:

[0039] Fixing mechanism 3 is located inside the main body 1;

[0040] The fixing mechanism 3 includes a slide rail 301 fixedly connected inside the main body 1. Two sliders 302 are slidably mounted on the surface of the slide rail 301. Two connecting rods 303 are fixedly installed on the top of the two sliders 302. Two clamps 304 located at the top of the main body 1 are fixedly installed on the top of the two connecting rods 303.

[0041] Drive component 4 is located inside the main body 1.

[0042] like Figure 4 As shown, the drive assembly 4 includes a motor 401 fixedly connected inside the main body 1. A lead screw 402 is fixedly installed at the output end of the motor 401. A movable plate 403 is threadedly connected to the surface of the lead screw 402. The movable plate 403 and the two sliders 302 are hinged together by a hinge rod 404.

[0043] Using the above solution: The operator places the battery casing cover on top of the battery, and then the battery casing to be welded is pushed between two clamps 304. This drives motor 401 to rotate lead screw 402. Since lead screw 402 is threadedly connected to moving plate 403, the moving plate 403 slides on the surface of lead screw 402 as it rotates. Because the moving plate 403 is hinged to both sliders 302 via hinge rods 404, lead screw 402 drives hinge rods 404 to rotate, and hinge rods 404 drive the two sliders 302 to move along slide rail 304. 1. The relative movement of the surfaces causes the slider 302 to move the connecting rod 303 and the clamp 304 toward the surface of the battery case. Then, the two clamps 304 will contact the surface of the battery case, and the surface of the battery case will contact the inner wall of one side of the two clamps 304, thereby positioning and fixing the battery case. After the fixing is completed, the laser welding assembly 2 can be driven to perform laser welding on the gap between the battery case and the battery case cover. Finally, the drive motor 401 drives the lead screw 402 to drive the two clamps 304 toward the surface of the battery case, thereby positioning and fixing the battery case and improving the welding quality.

[0044] like Figure 8 As shown, it also includes:

[0045] Storage component 5 is disposed at the top of the main body 1. Storage component 5 includes a storage box 501 fixedly connected to the top of the main body 1. An elastic element 502 is elastically connected inside the storage box 501. An abutment plate 503 is fixedly installed at one end of the elastic element 502.

[0046] The actuating mechanism 6 is located inside one side of the laser welding assembly 2.

[0047] like Figure 6 and Figure 7 As shown, the pushing mechanism 6 includes a square shell 601 fixedly connected to the inside of one side of the laser welding assembly 2. A second lead screw 602 is slidably connected inside the square shell 601. A second motor 603 is fixedly installed on one side of the outer surface of the square shell 601. A first gear 604 is fixedly installed at the output end of the second motor 603. A limiting ring 605 located on the surface of the second lead screw 602 is rotatably connected inside one end of the square shell 601. A second gear 606 located on the surface of the second lead screw 602 is fixedly installed on one side of the limiting ring 605. The second gear 606 and the second lead screw 602 are threadedly connected. A push plate 607 is located inside the storage box 501 on one side of the second lead screw 602.

[0048] Using the above scheme: Through the design of the storage component 5 and the pushing mechanism 6, multiple battery casings and housings to be welded can be placed inside the storage box 501. Then, the elastic element 502 is compressed, and the contact plate 503 abuts against the surface of the battery casing, thereby enabling continuous feeding of the clamp 304. After the battery casings between the clamps 304 are welded, the second motor 603 can be driven to rotate the first gear 604. Because the first gear 604 meshes with the second gear 606, the first gear 604 will drive the second gear 606 to rotate. As gear 2 606 and lead screw 2 602 rotate, lead screw 2 602 slides along the internal thread of gear 2 606. Then, motor 2 603 drives push plate 607 to slide into storage box 501. The moving push plate 607 pushes the battery case inside storage box 501 between clamps 304. Finally, by driving motor 2 603, lead screw 2 602 and push plate 607 push the battery case cover to be welded between the two clamps 304, thus facilitating the welding of the battery case and improving welding efficiency.

[0049] like Figure 7 As shown, it also includes:

[0050] The limiting component 9 is disposed inside the square shell 601. The limiting component 9 includes a limiting groove 901 opened inside the square shell 601, and a limiting plate 902 located inside the limiting groove 901 is fixedly installed at one end of the lead screw 602.

[0051] The above solution is adopted: through the design of the limiting component 9, when the second lead screw 602 moves, it will drive the limiting plate 902 to slide inside the limiting groove 901. Since the surface of the limiting plate 902 is in contact with the inner wall of the limiting groove 901, the second lead screw 602 can be limited, ensuring that the second lead screw 602 can move stably.

[0052] like Figure 7 As shown, it also includes:

[0053] The conveying assembly 7 is located inside the main body 1. The conveying assembly 7 includes a synchronous belt 701 rotatably connected to the main body 1, a gear 702 fixedly installed on one side of the synchronous belt 701, a rack 704 slidably connected inside the main body 1, a connecting plate 703 fixedly installed on one side of the rack 704, and the top end of the connecting plate 703 is fixedly connected to the bottom end of the limiting plate 902.

[0054] Using the above scheme: Through the design of the conveying component 7, after the battery casing welding between the clamps 304 is completed, the motor 401 can be driven again to make the lead screw 402 rotate in the opposite direction, and then it will move away from the surface of the battery casing. Then, the pushing mechanism 6 can be driven to push the battery casing to be welded inside the storage component 5 to move between the two clamps 304. During the movement of the clamp 304 by the lead screw 602 driving the limiting plate 902, the limiting plate 902 can move in conjunction with the connecting plate 703. The connecting plate 703 will drive the rack 704 to slide inside the main body 1. During the movement of rack 704, it meshes with gear 702. The moving rack 704 then drives gear 702 to rotate, which in turn drives synchronous belt 701 to rotate. Synchronous belt 701 transports the welded battery casing to the outside of the two clamps 304, facilitating the movement of the battery casing to be welded between the two clamps 304. Finally, the moving lead screw 602 and limit plate 902 drive the connecting plate 703 to move, thereby transporting the welded battery casing to the outside of the two clamps 304, facilitating battery casing replacement and improving welding continuity.

[0055] like Figure 4 As shown, it also includes:

[0056] The rotating assembly 8 is disposed on both sides of the outer surface of the slide rail 301. The rotating assembly 8 includes a slide groove 801 formed on both sides of the outer surface of the slide rail 301. The slider 302 is rotatably connected to a roller 802 located inside the slide groove 801.

[0057] The above solution is adopted: by designing the rotating component 8, during the movement of the slider 302, the friction between the roller 802 and the slide groove 801 is used to make the roller 802 roll inside the slide groove 801. The rolling of the roller 802 enables the slider 302 to move smoothly on the surface of the slide rail 301.

[0058] like Figure 6 and Figure 7 As shown, a contact plate 10 is provided on one side of the push plate 607, and the surface of the contact plate 10 can contact one side of the battery case inside the storage box 501.

[0059] The above solution is adopted: through the design of the contact plate 10, when the push plate 607 pushes the battery case of the storage box 501 to move, it will drive the contact plate 10 to move. The contact plate 10 can contact the surface of other battery cases, thereby blocking the movement of the remaining battery cases. This avoids the other battery cases blocking the reset of the push plate 607 when the push plate 607 pushes one of the battery cases to move.

[0060] like Figure 4As shown, a square hole is provided on one side of the connecting rod 303, and the rack 704 can move inside the square hole. Both clamps 304 are L-shaped, and the opposite sides of the two clamps 304 are smooth.

[0061] The above solution is adopted as follows: Through the design of the connecting rod 303, when the rack 704 moves, it will move inside the square hole, so the connecting rod 303 will not interfere with the movement of the rack 704. Through one side of the clamp 304, since the clamps 304 are all L-shaped, the battery case can be positioned when it contacts the inner wall of the clamp 304. Furthermore, both clamps 304 are smooth, which allows the battery case to move smoothly on opposite sides of the two clamps 304.

[0062] Working principle and usage process of this invention:

[0063] First, the operator needs to put the battery case on the top of the battery, and then put the battery case to be welded into the storage box 501. Then the elastic element 502 will be compressed, and the contact plate 503 will abut against the surface of the battery case. At this time, the drive motor 603 will make the gear 604 rotate, the gear 604 will drive the gear 606 to rotate, the lead screw 602 will slide along the thread inside the gear 606, and then the motor 603 will drive the push plate 607 to slide into the storage box 501. The moving push plate 607 will push the battery case inside the storage box 501 to move between the clamps 304.

[0064] Then, the drive motor 401 causes the lead screw 402 to rotate, the moving plate 403 slides on the surface of the lead screw 402, the lead screw 402 drives the hinge rod 404 to rotate, the hinge rod 404 drives the two sliders 302 to move relative to each other on the surface of the slide rail 301, the sliders 302 drive the connecting rod 303 and the clamp 304 to move towards the surface of the battery case, and then the two clamps 304 will contact the surface of the battery case, and the surface of the battery case will contact the inner wall on one side of the two clamps 304, thereby positioning and fixing the battery case. After the fixing is completed, the laser welding assembly 2 can be driven to perform laser welding on the gap between the battery case and the battery case cover.

[0065] After welding is completed, motor 401 can be driven again to move clamp 304 away from the surface of the battery case. Then, motor 603 is driven to move lead screw 602 inside storage box 501. When lead screw 602 moves, limit plate 902 slides inside limit groove 901. Limit plate 902 will drive connecting plate 703 and rack 704 to move. Then rack 704 will drive gear 702 and synchronous belt 701 to rotate, thereby moving the welded battery case to the outside of the two clamps 304. Then lead screw 602 and push plate 607 will push the battery case to be welded between the two clamps 304, thereby completing the replacement of the battery case. After that, welding operation can continue.

[0066] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0067] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A tooling for welding power battery covers, comprising a main body (1) and a laser welding assembly (2), characterized in that, Also includes: The fixing mechanism (3) is located inside the main body (1); The fixing mechanism (3) includes a slide rail (301) fixedly connected inside the main body (1). Two sliders (302) are slidably mounted on the surface of the slide rail (301). Two connecting rods (303) are fixedly installed at the top of the two sliders (302). Two clamps (304) located at the top of the main body (1) are fixedly installed at the top of the two connecting rods (303). The driving component (4) is located inside the main body (1).

2. The tooling for welding power battery covers according to claim 1, characterized in that: The drive assembly (4) includes a motor (401) fixedly connected inside the main body (1). A lead screw (402) is fixedly installed at the output end of the motor (401). A movable plate (403) is threadedly connected to the surface of the lead screw (402). The movable plate (403) and the two sliders (302) are hinged together by a hinge rod (404).

3. The tooling for welding power battery covers according to claim 1, characterized in that, Also includes: Storage component (5) is disposed at the top of the main body (1). The storage component (5) includes a storage box (501) fixedly connected to the top of the main body (1). An elastic element (502) is elastically connected inside the storage box (501). An abutment plate (503) is fixedly installed at one end of the elastic element (502). The pushing mechanism (6) is located inside one side of the laser welding assembly (2).

4. The tooling for welding power battery covers according to claim 3, characterized in that: The pushing mechanism (6) includes a square shell (601) fixedly connected to the inside of one side of the laser welding assembly (2). A second lead screw (602) is slidably connected inside the square shell (601). A second motor (603) is fixedly installed on one side of the outer surface of the square shell (601). A first gear (604) is fixedly installed at the output end of the second motor (603). A limiting ring (605) located on the surface of the second lead screw (602) is rotatably connected inside one end of the square shell (601). A second gear (606) located on the surface of the second lead screw (602) is fixedly installed on one side of the limiting ring (605). The second gear (606) and the second lead screw (602) are threadedly connected. A push plate (607) is located inside the storage box (501) on one side of the second lead screw (602).

5. The tooling for welding power battery covers according to claim 4, characterized in that, Also includes: The limiting component (9) is disposed inside the square shell (601). The limiting component (9) includes a limiting groove (901) opened inside the square shell (601). One end of the second lead screw (602) is fixedly installed with a limiting plate (902) located inside the limiting groove (901).

6. The tooling for welding power battery covers according to claim 1, characterized in that: Also includes: The conveying assembly (7) is located inside the main body (1). The conveying assembly (7) includes a synchronous belt (701) rotatably connected to the main body (1). A gear (702) is fixedly installed on one side of the synchronous belt (701). A rack (704) is slidably connected inside the main body (1). A connecting plate (703) is fixedly installed on one side of the rack (704). The top end of the connecting plate (703) is fixedly connected to the bottom end of the limiting plate (902).

7. The tooling for welding power battery covers according to claim 1, characterized in that, Also includes: The rotating assembly (8) is disposed on both sides of the outer surface of the slide rail (301). The rotating assembly (8) includes a slide groove (801) opened on both sides of the outer surface of the slide rail (301). The slider (302) is rotatably connected to a roller (802) located inside the slide groove (801).

8. The tooling for welding power battery covers according to claim 4, characterized in that: A contact plate (10) is provided on one side of the push plate (607), and the surface of the contact plate (10) can contact one side of the battery case inside the storage box (501).

9. The tooling for welding power battery covers according to claim 1, characterized in that: A square hole is provided on one side of the connecting rod (303), and the rack (704) can move inside the square hole.

10. The tooling for welding power battery covers according to claim 1, characterized in that: Both clamps (304) are L-shaped, and the opposite side of both clamps (304) is smooth.

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