Cylindrical battery cell collector plate body welding tool

Abstract

A cylindrical battery cell collector plate body welding tool comprises a lifting clamp device and an upper datum plate arranged above the lifting clamp device, and a plurality of welding holes are formed in the upper datum plate at intervals. The lifting clamp device comprises a horizontal sliding platform, a lifting platform and a battery cell positioning seat, the lifting platform is arranged above the horizontal sliding platform, and a lifting driving part for driving the lifting platform to ascend or descend is arranged at the bottom of the lifting platform; the battery cell positioning seat comprises a positioning side plate fixedly arranged on one side of the lifting platform and a sliding clamping side plate slidably arranged on one side of the positioning side plate through a sliding piece, a plurality of clamping arc grooves are formed in the inner side face of the positioning side plate, and suspension supporting tables are installed at the positions, corresponding to the bottoms of the clamping arc grooves, of the positioning side plate; the sliding clamping side plates are used for being matched with the positioning side plates to clamp a plurality of battery cells; the horizontal sliding platform moves through the sliding assembly and drives the battery cell to move to be aligned with the welding hole. According to the utility model, the battery cell and the collector plate can be accurately clamped and positioned.

Description

Technical Field

[0001] The utility model relates to the technical field of battery core production, in particular to a welding tool for a cylindrical battery core current collecting plate. Background Art

[0002] During the manufacturing process of cylindrical battery cells, welding the current collector plate to the front end of the cylindrical battery cell is a critical step, as the positive electrode column needs to be welded to the current collector plate at the front end of the battery cell. This affects the subsequent welding of the positive electrode column of the battery cell. Spot welding or laser welding techniques are typically used to weld the battery cell to the current collector plate. In the prior art, the welding process between the battery cell and the current collector plate is as follows: First, a worker installs the current collector plate at the front end of the battery cell. Then, the worker holds the battery cell with its tail facing up and places it on the welding platform, with the front end of the cell where the current collector plate is installed facing directly below the laser spot. The laser is then activated to complete the welding. However, in the prior art, workers place the battery cell on the welding platform based on experience, which results in inaccurate positioning of the battery cell, causing a deviation between the position of the battery cell and the laser spot, resulting in deviations and inaccuracies in the welding position between the battery cell and the current collector plate. Furthermore, since the battery cell is placed on the welding platform without any external support, the battery cell may vibrate during the laser welding process. This vibration of the battery cell may affect the welding between the battery cell and the current collector plate and the welding quality. Utility Model Content

[0003] The utility model aims to provide a cylindrical battery core collector plate welding tool, which can accurately clamp and position the battery core and the collector plate.

[0004] In order to solve the above technical problems, the specific solution adopted by the utility model is a cylindrical battery collector plate welding tool, including a lifting fixture device and an upper reference plate arranged above the lifting fixture device, and a plurality of welding holes are spaced apart on the upper reference plate;

[0005] The lifting fixture device includes a horizontal sliding platform, a lifting platform and a battery cell positioning seat. The lifting platform is arranged above the horizontal sliding platform and parallel to the horizontal sliding platform. A lifting drive member for driving the lifting platform to rise or fall is arranged on the horizontal sliding platform at the bottom of the lifting platform;

[0006] The battery cell positioning seat includes a positioning side plate and a sliding clamping side plate. The positioning side plate is fixedly set on one side of the lifting platform for carrying multiple battery cells. A plurality of clamping arc grooves for clamping the battery cells are set on the inner side surface of the positioning side plate. The bottoms of the corresponding clamping arc grooves on the positioning side plates are respectively installed with suspended support platforms for supporting the battery cells; the sliding clamping side plate is slidably set on one side of the positioning side plate through a sliding part for cooperating with the positioning side plate to clamp multiple battery cells; the horizontal sliding platform moves through the sliding assembly and drives the battery cell to move to align with the welding hole.

[0007] As another optimization solution for the above-mentioned cylindrical battery collector plate welding tooling: the cross-sectional shape of the positioning side plate is L-shaped, the clamping arc groove is set on the vertical section of the positioning side plate, and the suspension support platform is set on the horizontal section of the positioning side plate.

[0008] As another optimization solution for the above-mentioned cylindrical battery cell collector plate welding tooling: multiple columns are fixed on the horizontal section of the positioning side plate at the bottom of any suspended support platform, and the upper ends of the columns are passed through sliding holes opened on the suspended support platform, and a spring is mounted on any column.

[0009] As another optimization solution for the above-mentioned cylindrical battery cell collector plate welding tooling: the sliding assembly includes a lead screw arranged between two support frames, a nut installed on the lead screw, and a sliding drive motor for driving the lead screw to rotate, and the horizontal sliding platform is fixed on the nut.

[0010] As another optimization solution for the above-mentioned cylindrical battery cell collector plate welding tooling: the sliding parts include two slide rails, two sliders and a sliding drive cylinder, the two slide rails are arranged on the lifting platform, the two sliders are fixed to the bottom of the sliding clamping side plate and slide with the corresponding side slide rails respectively, the sliding drive cylinder is fixed to the bottom of the sliding clamping side plate, and the telescopic rod of the sliding drive cylinder is arranged in the direction of the battery cell positioning seat and is connected to the positioning side plate.

[0011] As another optimization solution for the above-mentioned cylindrical battery cell collector plate welding tool: the lifting drive component is a lifting drive cylinder, the cylinder body of the lifting drive cylinder is fixed on the horizontal sliding platform, and the telescopic rod of the lifting drive cylinder is connected to the lifting platform.

[0012] As another optimization solution for the above-mentioned cylindrical battery cell collector plate welding tooling: a plurality of lifting slide columns are fixed on the horizontal sliding platform for the lifting platform to slide up or down vertically.

[0013] As another optimization solution for the above-mentioned cylindrical battery collector plate welding tool: the upper reference plate is fixed above the lifting fixture device through support frames arranged at both ends thereof.

[0014] Compared with the prior art, the present invention has the following beneficial effects:

[0015] The upper reference plate in the present invention is arranged above the lifting fixture device, the battery cell positioning seat for carrying the battery cell is installed on the lifting platform, and the lifting platform is installed on the sliding platform. The positioning side plate in the battery cell positioning seat is fixed to one side of the lifting platform, the side of the battery cell can be clamped in the clamping arc groove on the positioning side plate, and the bottom of the battery cell can be placed on a suspended support platform arranged at the bottom of the corresponding clamping arc groove, and the sliding clamping side plate is slidingly arranged on one side of the positioning side plate through a sliding member. The sliding clamping side plate can slide in the direction of the positioning side plate and cooperate with the positioning side plate to clamp multiple battery cells. Under the drive of the sliding assembly, the sliding platform can drive multiple battery cells to move stably to the bottom of the corresponding welding hole, and under the drive of the lifting drive member, multiple battery cells are aligned with the welding holes on the corresponding upper reference plate as the lifting platform rises.

[0016] The battery cell positioning seat and suspension support platform in this tooling can accurately position multiple battery cells to avoid displacement during movement. In addition, the suspension support platform can compensate for the height deviation between multiple battery cells to keep the welding height of multiple battery cells consistent, thereby ensuring the quality of welding between the battery cells and the collecting plate. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 This is a side structural diagram of the present utility model;

[0018] Figure 2 This is a schematic diagram of the main structure of the utility model;

[0019] Figure 3 This is a schematic diagram of the top view of the structure of the utility model;

[0020] Figure 4 This is a schematic diagram of the bottom-up structure of the present invention;

[0021] Figure markings: 1. Upper reference plate, 101. Welding hole, 102. Protective air pipe connection port, 103. Support frame, 2. Battery cell, 3. Battery cell positioning seat, 301. Positioning side plate, 3011. Suspended support platform, 3012. Snap-fit ​​arc groove, 302. Sliding clamping side plate, 4. Sliding assembly, 401. Nut, 402. Lead screw, 5. Horizontal sliding platform, 6. Lifting platform, 601. Lifting drive cylinder, 602. Lifting slide column, 7. Sliding part, 701. Sliding block, 702. Slide rail, 703. Sliding drive cylinder. DETAILED DESCRIPTION

[0022] The technical solution of the present invention is further elaborated in detail below in conjunction with specific embodiments. Parts that are not described in detail in the following embodiments of the present invention, such as the models of the lifting drive cylinder, the sliding drive cylinder, and the sliding drive motor, should be immediately known to those skilled in the art or should be known to the prior art.

[0023] A cylindrical battery collector plate welding tool, such as Figure 1-4 As shown, the tooling includes a lifting fixture device and an upper reference plate 1 arranged above the lifting fixture device. Both ends of the upper reference plate 1 are fixed above the lifting fixture device through support frames 103 respectively, and four welding holes 101 are arranged at intervals on the upper reference plate 1.

[0024] The lifting fixture device includes a horizontal sliding platform 5, a lifting platform 6 and a battery cell positioning seat 3. The battery cell positioning seat 3 is arranged on the lifting platform 6. The lifting platform 6 is arranged above the horizontal sliding platform 5, and the lifting platform 6 is arranged parallel to the horizontal sliding platform 5. A lifting drive component is provided on the horizontal sliding platform 5 at the bottom of the lifting platform 6. The lifting drive component is used to drive the lifting platform 6 to rise or fall and drive the battery cell positioning seat 3 to rise or fall.

[0025] like Figure 1 As shown, the battery cell positioning seat 3 includes a positioning side plate 301 for supporting four battery cells 2 and a sliding clamping side plate 302 for cooperating with the positioning side plate 301 to clamp the four battery cells 2. The positioning side plate 301 has an L-shaped cross-section, and a plurality of pillars are provided at the bottom of the horizontal section of the positioning side plate 301. The positioning side plate 301 is fixed to the left half of the lifting platform 6 by the plurality of pillars.

[0026] Four suspended support platforms 3011 are spaced apart on the horizontal section of the positioning side plate 301. These platforms are used to support the battery cells 2. Each of the suspended support platforms 3011 is a regular quadrilateral, with sliding holes (not shown) defined along its thickness at each corner. A column slides through each of these sliding holes, and the lower end of each column is fixed to the corresponding horizontal section of the positioning side plate 301.

[0027] Each column is fitted with a spring (not shown), with its lower end resting on the horizontal section of the positioning side plate 301 and its upper end resting on the corresponding sliding hole of the suspension support 3011. The suspension support 3011 compensates for any height variations between the four battery cells 2, maintaining a consistent welding height during welding and improving the welding quality between the battery cells 2 and the current collecting plate.

[0028] like Figure 3 As shown, a snap-in arc groove 3012 is provided on the inner side surface of the vertical section of the positioning side plate 301, corresponding to each of the four suspension support platforms 3011. The four snap-in arc grooves 3012 are arranged continuously. The snap-in arc grooves 3012 can snap onto the curved outer walls of the battery cells 2 placed on the corresponding suspension support platforms 3011. The provision of the snap-in arc grooves 3012 ensures consistent spacing between the four battery cells 2 and maintains a certain degree of stability on the suspension support platforms 3011.

[0029] like Figure 1 As shown, the sliding clamping side plate 302 is slidably mounted on the right half of the lifting platform 6 via a sliding member 7. The cross-section of the sliding clamping side plate 302 is L-shaped, and the vertical section of the sliding clamping side plate 302 is arranged parallel to the vertical section of the positioning side plate 301. The sliding clamping side plate 302 can slide toward the positioning side plate 301 via the sliding member 7 and cooperate with the positioning side plate 301 to clamp the four battery cells 2, preventing the four battery cells 2 from shaking and shifting when they move directly below the upper reference plate 1.

[0030] The sliding member 7 includes a sliding drive member, two sliding rails 702 and two sliders 701, wherein the sliding drive member is a lifting drive cylinder 601, the cylinder body of the lifting drive cylinder 601 is fixed to the bottom of the horizontal section of the sliding clamping side plate 302, the telescopic end of the lifting drive cylinder 601 is set toward the horizontal section of the positioning side plate 301, and the telescopic end of the lifting drive cylinder 601 is fixedly connected to the side of the horizontal section of the positioning side plate 301.

[0031] The two slide rails 702 are parallel to each other and arranged in a direction perpendicular to the horizontal section of the positioning side plate 301. The sliders 701 are respectively mounted on the two slide rails 702, and the upper side surfaces of the two sliders 701 are fixedly connected to the bottom surface of the sliding clamping side plate 302. When it is necessary to clamp the battery cell 2, the sliding clamping side plate 302 moves toward the positioning side plate 301 as the telescopic rod of the lifting drive cylinder 601 retracts until it cooperates with the positioning side plate 301 to clamp the battery cell 2. Correspondingly, after welding is completed, the sliding clamping side plate 302 gradually moves away from the positioning side plate 301 as the telescopic rod of the lifting drive cylinder 601 extends, making it easier to remove the battery cell 2.

[0032] The horizontal sliding platform 5 is moved to the bottom of the upper reference plate 1 through the sliding assembly 4, and the four battery cells 2 clamped by the battery cell positioning seat 3 can then be moved to the bottom of the upper reference plate 1. The sliding assembly 4 is arranged between the two support frames 103. The sliding assembly 4 includes a lead screw 402, a nut 401 and a sliding drive motor (not shown in the figure). The two ends of the lead screw 402 are fixed by a rotating shaft seat for its installation and rotation. The nut 401 is installed on the lead screw 402. The output shaft of the sliding drive motor is connected to one end of the lead screw 402 through a coupling. Under the drive of the sliding drive motor, the lead screw 402 can rotate accordingly, and the nut 401 moves along the lead screw 402 as the lead screw 402 rotates.

[0033] The nut 401 is fixedly connected to the bottom surface of the horizontal sliding platform 5. A sliding stabilizing plate is provided on each side of the lead screw 402. The sliding stabilizing plates are arranged along the length of the lead screw 402, and each sliding stabilizing plate has a stabilizing bar hole along its corresponding length. A stabilizing bar is fixed to each side of the nut 401, corresponding to each of the two sliding stabilizing plates. One end of the stabilizing bar is fixed to the nut 401, and the other end is inserted into the stabilizing bar hole on the corresponding side. The arrangement of the stabilizing bars and the corresponding stabilizing bar holes enables the nut 401 to move smoothly along the lead screw 402, thereby allowing the horizontal sliding platform 5 to drive the four battery cells 2 to move smoothly to directly below the upper reference plate 1.

[0034] The lifting drive component is arranged on the horizontal sliding platform 5, and the lifting drive component is the lifting drive cylinder 601. The cylinder body of the lifting drive cylinder 601 is fixed to the middle of the horizontal sliding platform 5, and the telescopic rod of the lifting drive cylinder 601 is arranged toward the lifting platform 6, and the telescopic cylinder of the lifting drive cylinder 601 is fixedly connected to the bottom surface of the lifting platform 6.

[0035] The horizontal sliding platform 5 is rectangular, and a lifting slide 602 is fixed at each of the four corner positions of the horizontal sliding platform 5. One end of the four lifting slides 602 is fixed on the horizontal sliding platform 5, and the other end thereof slides through the corresponding through-holes set on the lifting platform 6. The setting of the lifting slide 602 enables the lifting platform 6 to rise or fall vertically under the drive of the lifting drive cylinder 601, maintaining its stability when rising or falling.

[0036] The extension of the telescopic rod of the lifting drive cylinder 601 can push the lifting platform 6 to rise, and the four battery cells 2 located directly below the upper reference plate 1 will rise accordingly until the battery cells 2 are aligned with the welding holes 101 at the corresponding positions. The height deviation of the four battery cells 2 is then compensated by the floating support platform 3011 so that they are at the same welding height, and then welding can be carried out.

[0037] In this embodiment, to improve welding quality, four shielding gas pipe connection ports 102 are provided on the side of the upper reference plate 1. The four shielding gas pipe connection ports 102 are respectively located at positions corresponding to the four welding holes 101. The shielding gas pipe connection ports 102 are connected to the shielding gas channels opened in the corresponding welding holes 101. The provision of the shielding gas pipe connection ports facilitates the connection of the shielding gas pipe used to transport the shielding gas. During welding, the shielding gas can be blown into the welding hole 101 after passing through the shielding gas delivery pipe, the shielding gas pipe connection ports 102, and the shielding gas channels in sequence.

[0038] The specific process of the present invention for accurately positioning the battery cell 2 so that the battery cell 2 and the current collecting plate are welded is as follows: first, the battery cell 2 is placed on the suspended support platform 3011, and the side wall of the battery cell 2 is clamped in the clamping arc groove 3012 at the corresponding position. Then, the sliding drive cylinder 703 is started, and the telescopic rod of the sliding drive cylinder 703 contracts and drives the sliding clamping side plate 302 to slide toward the positioning side plate 301 to clamp the battery cell 2.

[0039] Next, the sliding drive motor is activated, and the horizontal sliding platform 5 drives the battery cell 2 along the lead screw 402 to move directly below the upper reference plate 1. Then, the lifting drive cylinder 601 is activated, and the telescopic rod of the lifting drive cylinder 601 extends and pushes the battery cell 2 upward until the battery cell 2 is aligned with the welding hole 101. After the battery cell 2 is compensated by the suspension support platform 3011, it is at the same welding height. After that, welding between the battery cell 2 and the current collecting plate can be carried out.

Claims

1. A cylindrical battery core collector plate welding tool, characterized by: It comprises a lifting fixture device and an upper reference plate (1) arranged above the lifting fixture device, wherein a plurality of welding holes (101) are spaced apart on the upper reference plate (1); The lifting fixture device comprises a horizontal sliding platform (5), a lifting platform (6) and a battery cell positioning seat (3); the lifting platform (6) is arranged above the horizontal sliding platform (5) and parallel to the horizontal sliding platform (5); and a lifting driving member for driving the lifting platform (6) to rise or fall is arranged on the horizontal sliding platform (5) and located at the bottom of the lifting platform (6); The battery cell positioning seat (3) comprises a positioning side plate (301) and a sliding clamping side plate (302); the positioning side plate (301) is fixedly arranged on one side of the lifting platform (6) for carrying multiple battery cells (2); multiple clamping arc grooves (3012) for clamping the battery cells (2) are arranged on the inner side surface of the positioning side plate (301); and suspension support platforms (3011) for supporting the battery cells (2) are respectively installed at the bottoms of the corresponding clamping arc grooves (3012) on the positioning side plate (301); the sliding clamping side plate (302) is slidingly arranged on one side of the positioning side plate (301) through a sliding member (7) for cooperating with the positioning side plate (301) to clamp multiple battery cells (2); the horizontal sliding platform (5) moves through the sliding assembly (4) and drives the battery cells (2) to move until they are aligned with the welding holes (101).

2. The cylindrical battery core collector plate welding tool according to claim 1, characterized in that: The cross-section of the positioning side plate (301) is L-shaped, the clamping arc groove (3012) is arranged on the vertical section of the positioning side plate (301), and the suspension support platform (3011) is arranged on the horizontal section of the positioning side plate (301).

3. The cylindrical battery core current collecting plate welding tool according to claim 2, characterized in that: A plurality of columns are fixed on the bottom of any one of the suspension support platforms (3011) on the horizontal section of the positioning side plate (301), and the upper ends of the columns are inserted into sliding holes provided on the suspension support platform (3011). A spring is sleeved on any one of the columns.

4. The cylindrical battery core current collecting plate welding tool according to claim 1, characterized in that: The sliding assembly (4) comprises a lead screw (402) arranged between two support frames (103), a nut (401) mounted on the lead screw (402), and a sliding drive motor for driving the lead screw (402) to rotate. The horizontal sliding platform (5) is fixed on the nut (401).

5. The cylindrical battery core current collecting plate welding tool according to claim 1, characterized in that: The sliding member (7) comprises two slide rails (702), two sliders (701) and a sliding drive cylinder (703). The two slide rails (702) are arranged on the lifting platform (6). The two sliders (701) are fixed to the bottom of the sliding clamping side plate (302) and respectively slide with the corresponding side slide rails (702). The sliding drive cylinder (703) is fixed to the bottom of the sliding clamping side plate (302). The telescopic rod of the sliding drive cylinder (703) is arranged in the direction of the battery cell positioning seat (3) and is connected to the positioning side plate (301).

6. The cylindrical battery core current collecting plate welding tool according to claim 1, characterized in that: The lifting drive member is a lifting drive cylinder (601), the cylinder body of the lifting drive cylinder (601) is fixed on the horizontal sliding platform (5), and the telescopic rod of the lifting drive cylinder (601) is connected to the lifting platform (6).

7. The cylindrical battery core current collecting plate welding tool according to claim 1, characterized in that: A plurality of lifting slides (602) for the lifting platform (6) to slide up or down vertically are fixed on the horizontal sliding platform (5).

8. The cylindrical battery core current collecting plate welding tool according to claim 1, characterized in that: The upper reference plate (1) is fixed above the lifting fixture device via support frames (103) arranged at both ends thereof.

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