Cylindrical battery cell circumference welding positioning tool

Abstract

A cylindrical battery cell circumference welding positioning tool comprises an installation platform, a welding end datum plate, a rotating clamp and a tail positioning rotating disc, the rotating clamp is rotationally installed on the welding end datum plate through a rotating shaft, and the side wall of the rotating clamp is provided with an inserting groove for a positive electrode connecting column on a battery cell head end cover plate to penetrate in. A square clamping groove used for containing and clamping a square protruding block at the bottom of the positive electrode connecting column is formed in the end face of the rotating clamp, and a lifting pin used for being inserted into the positive electrode connecting column in an abutting mode is fixed to the position, located in the inserting groove, of the rotating clamp. The tail positioning rotating disc is propped against the tail end of the battery cell in a sliding manner through the sliding piece and can be matched with the rotating fixture to clamp the battery cell; the rotating shaft is connected with a driving assembly, and the driving assembly can drive the rotating clamp and the battery cell clamped by the tail positioning rotating disc in a matched mode to rotate synchronously through the rotating shaft. According to the utility model, the battery cell head end cover plate and the battery cell shell can be stably clamped, and the problems of insufficient welding, partial welding, poor welding appearance and the like are avoided.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of electric core welding, in particular to a cylindrical electric core circumferential welding positioning tool. BACKGROUND

[0002] The sealing process in the production process of the cylindrical electric core is a crucial process in the whole electric core manufacturing, and the sealing process mainly welds the electric core head cover plate at the electric core shell head opening, and the electric core shell head is sealed by welding the electric core head cover plate, and the whole winding core in the electric core can form a sealed electrochemical system. The existing sealing process is to install the electric core head cover plate at the electric core shell head opening, and then install the electric core shell on the clamping and rotating support frame, and the electric core shell rotates on the clamping and rotating support frame, and the laser completes welding along the welding seam between the electric core head cover plate and the electric core shell head.

[0003] However, when the existing electric core shell rotates on the clamping and rotating support frame, the position of the clamping and rotating support frame clamping the electric core shell is not fixed, which causes the welding seam between the electric core head cover plate and the electric core shell head to be not accurately positioned below the laser port, and the worker may need to spend time and effort to adjust the position of the clamping and rotating support frame clamping the electric core shell to make the welding seam below the laser port, which also affects the efficiency of the electric core circumferential welding. Moreover, the electric core head cover plate may be slightly separated from the electric core shell head under the action of the centrifugal force of the electric core shell rotation, which causes the welding seam between the electric core head cover plate and the electric core shell head to be widened, and the laser cannot completely weld the welding seam when welding along the welding seam, which causes problems such as virtual welding, partial welding and poor welding appearance between the electric core head cover plate and the electric core shell head. The above problems seriously affect the quality of the electric core production, and the unqualified products may need to be reworked, but reworking also affects the production efficiency of the electric core. UTILITY MODEL CONTENTS

[0004] The utility model aims to provide a cylindrical electric core circumferential welding positioning tool, which can stably clamp the electric core head cover plate and the electric core shell, and avoid problems such as virtual welding, partial welding and poor welding appearance.

[0005] In order to solve the above technical problems, the utility model adopts the specific scheme of a kind of cylindrical electric core circumferential welding positioning tool, including installation platform, welding end reference plate, rotary fixture and tail positioning rotary disc, welding end reference plate is fixedly arranged in installation platform one side, rotary fixture is rotatably installed on welding end reference plate by rotating shaft, rotary fixture side wall is equipped with the slot for the positive electrode connecting column on the first end cover of electric core and is inserted, rotary fixture end surface is equipped with square clamping groove, square clamping groove is used to place the square protruding block of clamping positive electrode connecting column bottom, square clamping groove is communicated with slot, and rotary fixture is fixed with a top pin in slot for inserting in positive electrode connecting column;

[0006] Tail positioning rotary disc is oppositely arranged with rotary fixture, tail positioning rotary disc is slidably abutted on electric core tail end and can be clamped with rotary fixture electric core;The end of rotating shaft opposite to rotary fixture is connected with driving assembly, and the driving assembly can drive the electric core synchronous rotation of rotary fixture and tail positioning rotary disc clamped by rotating shaft.

[0007] As another optimization scheme of the above-mentioned cylindrical electric core circumferential welding positioning tool: a lifting ladder-shaped groove for supporting the electric core shell is arranged between the rotary fixture and the tail positioning rotary disc on the installation platform.

[0008] As another optimization scheme of the above-mentioned cylindrical electric core circumferential welding positioning tool: a slide table air cylinder for driving the lifting or lowering of the lifting ladder-shaped groove is installed on the installation platform directly below the lifting ladder-shaped groove.

[0009] As another optimization scheme of the above-mentioned cylindrical electric core circumferential welding positioning tool: the rotary fixture includes an integrally formed small cylindrical end and a large cylindrical end, the small cylindrical end is connected with the rotating shaft, the top pin is arranged on the central axis of the small cylindrical end, the slot is arranged on the sidewall of the large cylindrical end, and the square clamping groove is arranged on the end face of the large cylindrical end.

[0010] As another optimization scheme of the above-mentioned cylindrical electric core circumferential welding positioning tool: the driving assembly includes a driving motor, a driving pulley, a driven pulley and a transmission belt, the driving pulley is installed on the output shaft of the driving motor, the driven pulley is installed on the end of the rotating shaft away from the rotary fixture, and the transmission belt is sleeved between the driving pulley and the driven pulley.

[0011] As another optimization scheme of the above-mentioned cylindrical electric core circumferential welding positioning tool: the sliding member includes a sliding block, a sliding rail and a sliding cylinder for driving the sliding block to slide along the sliding rail.

[0012] As another optimization scheme of the above-mentioned cylindrical electric core circumferential welding positioning tool: the sliding block is provided with a mounting seat, and the tail positioning rotary disc is rotatably arranged on the mounting seat.

[0013] As another optimization scheme of the above-mentioned cylindrical battery circumferential welding positioning tool: a tail positioning rotating disc is provided with a circumferential clamping step for clamping the tail end of the battery along the circumferential direction of the tail positioning rotating disc.

[0014] Compared with the prior art, the utility model has the advantages of:

[0015] The positive electrode connecting column on the battery head end cover plate installed on the battery shell head end can be inserted into the insertion slot on the side wall of the rotating clamp, the jacking pin arranged in the rotating clamp can be inserted into the positive electrode connecting column inserted into the insertion slot, the square protrusion at the bottom of the positive electrode connecting column can be clamped into the square clamping slot communicated with the insertion slot on the end face of the rotating clamp, the tail positioning rotating disc arranged opposite to the rotating clamp slides under the driving of the sliding member until the tail positioning rotating disc is inserted into the tail end of the battery, the tail positioning rotating disc is rotatably arranged and can be cooperated with the rotating clamp to clamp and fix the battery, the cooperation and clamping of the rotating clamp and the tail positioning rotating disc can ensure the accurate positioning of the connection between the battery head end cover plate and the battery shell, so that the welding seam position between the battery head end cover plate and the battery shell head end is always located directly below the laser port, the problem of welding deviation during welding is avoided, the position of the welding seam is accurately positioned, compared with the prior art, the time for adjusting the alignment of the battery shell with the laser port is reduced, and the battery circumferential welding efficiency is greatly improved. BRIEF DESCRIPTION OF DRAWINGS

[0016] Figure 1 It is a schematic view of the main structure of the utility model;

[0017] Figure 2 It is a schematic view of the main structure of the utility model;

[0018] Figure 3 It is a schematic view of the structure of the driving assembly, the rotating clamp and the lifting ladder-shaped slot in the utility model;

[0019] Figure 4 It is a schematic view of the structure of the rotating clamp in the utility model;

[0020] Figure 5 It is a schematic view of the structure of the battery head end cover plate and the battery shell used for machining in the utility model;

[0021] Mark: 1, installation platform, 2, welding end reference plate, 3, rotating fixture, 301, slot, 302, square clamping groove, 303, large cylindrical end, 304, top pin, 305, small cylindrical end, 4, battery cell, 401, battery cell tail end, 402, battery cell shell, 403, square protrusion, 404, battery cell shell head, 405, positive electrode connecting column, 406, battery cell head cover plate, 5, drive assembly, 501, driving pulley, 502, transmission belt, 503, drive motor, 504, driven pulley, 6, tail positioning rotating disc, 601, mounting seat, 7, sliding part, 701, sliding cylinder, 702, slide rail, 703, sliding block, 704, push plate, 8, lifting ladder groove, 9, sliding table cylinder. DETAILED DESCRIPTION

[0022] The technical scheme of the utility model will be further described in detail below in combination with specific embodiments, and the parts not described in detail in the following embodiments of the utility model, such as the model and specification of the drive motor and the sliding cylinder and the sliding table cylinder, are all prior art known or should be known to those skilled in the art.

[0023] A cylindrical battery cell circumferential welding positioning tool, as shown in the figure, comprises an installation platform 1, a welding end reference plate 2, a rotating fixture 3, a tail positioning rotating disc 6 and a lifting ladder groove 8. Figures 1-3 The welding end reference plate 2 is fixedly arranged on the left side of the installation platform 1, the tail positioning rotating disc 6 is slidingly arranged on the right side of the installation platform 1, and the tail positioning rotating disc 6 is oppositely arranged with the welding end reference plate 2.

[0024] The rotating fixture 3 is rotatably installed on the welding end reference plate 2 through a rotating shaft, an installation hole is formed on the welding end reference plate 2, a rotating bearing is installed in the installation hole, the rotating shaft is arranged in the rotating bearing, one end of the rotating fixture 3 installed on the rotating shaft faces the tail positioning rotating disc 6, and the other end of the rotating shaft is connected with a drive assembly 5 for driving the rotating shaft to rotate.

[0025] As shown in the figure, the drive assembly 5 comprises a drive motor 503, a driving pulley 501 and a driven pulley 504, an installation support is arranged on the upper side of the welding end reference plate 2 on the installation platform 1, and the drive motor 503 is fixed to the installation platform 1 through the installation support. Figure 3 The driving pulley 501 is installed on the output shaft of the drive motor 503, the driven pulley 504 is installed on the end of the rotating shaft away from the rotating fixture 3, and the driving pulley 501 and the driven pulley 504 are on the same horizontal plane.

[0026] The transmission belt 502 is sleeved between the driving pulley 501 and the driven pulley 504, the driving motor 503 is started, the driving pulley 501 is rotated and drives the driven pulley 504 to rotate through the transmission belt 502, then the rotating shaft is rotated by the rotating driven pulley 504, and the rotating clamp 3 is rotated by the rotating shaft.

[0027] As shown in Figures 3-5 The rotating clamp 3 includes a small cylindrical end 305 and a large cylindrical end 303, the small cylindrical end 305 and the large cylindrical end 303 are integrally formed, the rotating clamp 3 is connected with the rotating shaft through the small cylindrical end 305, and the large cylindrical end 303 of the rotating clamp 3 is arranged towards the tail positioning rotating disc 6. A square clamping groove 302 is arranged on the end face of the large cylindrical end 303, the square clamping groove 302 is used for placing the square protrusion 403 clamped at the bottom of the positive electrode connecting column 405, and one side of the square clamping groove 302 is an opening. A slot 301 is arranged on the side wall of the large cylindrical end 303 corresponding to the opening end of the square clamping groove 302 along the axial direction of the large cylindrical end 303, the slot 301 is used for the positive electrode connecting column 405 on the first end cover plate 406 of the battery cell to penetrate into the rotating clamp 3, and the slot 301 is communicated with the square clamping groove 302.

[0028] A mounting hole is arranged in the small cylindrical end 305 along the central axis, a jack 304 is fixed in the mounting hole, the cylindrical end of the jack 304 is fixed in the mounting hole, and the jack 304 is used for being inserted into the positive electrode connecting column 405. The sharp end of the jack 304 is in the slot 301, so that the jack 304 is inserted into the positive electrode connecting column 405 on the first end cover plate 406 of the battery cell penetrating into the slot 301. Through the insertion and cooperation of the jack 304 and the positive electrode connecting column 405 on the first end cover plate 406 of the battery cell, the first end cover plate 406 of the battery cell and the battery cell shell 402 on which the first end cover plate 406 is mounted can rotate synchronously with the rotating clamp 3.

[0029] The lifting ladder-shaped groove 8 is arranged between the welding end reference plate 2 and the tail positioning rotating disc 6 and is used for supporting the battery cell shell 402. A mounting square hole is arranged in the bottom of the lifting ladder-shaped groove 8 on the mounting platform 1, a sliding table cylinder 9 used for driving the lifting ladder-shaped groove 8 to ascend or descend is mounted in the mounting square hole, the cylinder body of the sliding table cylinder 9 is fixed on the mounting platform 1, and the end of the telescopic rod of the sliding table cylinder 9 is connected with the bottom surface of the lifting ladder-shaped groove 8.

[0030] The telescopic rod of the slide cylinder 9 extends and pushes the lifting ladder-shaped groove 8 to rise to a height slightly lower than that of the rotating clamp 3, and the battery shell 402 is placed in the lifting ladder-shaped groove 8. The support of the battery shell 402 by the lifting ladder-shaped groove 8 facilitates the installation of the battery head cover plate 406 installed at the battery shell head end 404 in the rotating clamp 3 through the positive electrode connecting column 405 on the battery head cover plate 406 and the insertion and abutting cooperation of the square protrusion 403 with the square clamping groove 302.

[0031] The tail positioning rotating disc 6 is provided with a circumferential clamping step along the circumferential direction of the tail positioning rotating disc 6, and the circumferential clamping step has a certain slope, so that the tail positioning rotating disc 6 is inserted and clamped in the battery tail end 401 through the circumferential clamping step. The tail positioning rotating disc 6 is slidingly arranged on the installation platform 1 through the sliding member 7, and the sliding member 7 includes a sliding rail 702, a sliding block 703, and a sliding cylinder 701. The sliding block 703 is slidingly and cooperatively arranged on the sliding rail 702.

[0032] The sliding block 703 is fixedly provided with a mounting seat 601, and the tail positioning rotating disc 6 is rotatably arranged on the mounting seat 601. The mounting seat 601 is provided with a mounting circular hole, a rotating bearing is arranged in the mounting circular hole, a rotating shaft is arranged in the rotating bearing, and the tail positioning rotating disc 6 is arranged on the rotating shaft. The sliding cylinder 701 is fixed to one side of the sliding rail 702 through a support, and the end of the telescopic rod of the sliding cylinder 701 is connected with the mounting seat 601 through a push plate 704.

[0033] The tail positioning rotating disc 6 can slide under the driving of the sliding member 7 until the tail positioning rotating disc 6 is inserted and abuts in the battery tail end 401. The tail positioning rotating disc 6 inserted and abutting in the battery tail end 401 can clamp the battery together with the rotating clamp 3, so as to ensure the accurate positioning of the connection between the battery head cover plate 406 and the battery shell head end 404, so that the welding seam can always be directly below the laser port, avoiding the situation of partial welding, and improving the efficiency of the circumferential welding of the battery.

[0034] The rotation of the rotating shaft can drive the rotating clamp 3 and the tail positioning rotating disc 6 to rotate synchronously, and the clamping of the battery by the rotating clamp 3 and the tail positioning rotating disc 6 can ensure the stability of the installation between the battery head cover plate 406 and the battery shell head end 404 during circumferential welding, avoiding the situation that the welding seam becomes wide when the battery head cover plate 406 is separated from the battery shell head end 404 during rotary welding, so as to avoid the situation that the welding seam between the battery head cover plate 406 and the battery shell 402 is not fully welded.

[0035] The process of the circumferential welding of the battery cell installation is as follows: firstly, the slide table cylinder 9 is started, the telescopic rod of the slide table cylinder 9 is extended and pushes the lifting ladder-shaped groove 8 to rise to a specified position, then the battery cell shell 402 provided with the battery cell head cover plate 406 is placed in the lifting ladder-shaped groove 8, at this time, the positive electrode connecting column 405 on the battery cell head cover plate 406 is inserted into the slot 301 and is inserted and matched with the top pin 304, at this time, the square protruding block 403 is clamped in the square clamping groove 302.

[0036] Secondly, the sliding cylinder 701 is started, the telescopic rod of the sliding cylinder 701 is retracted and drives the tail positioning rotating disc 6 to slide towards the battery cell tail end 401 through the pushing flat plate 704, until the tail positioning rotating disc 6 is clamped in the battery cell tail end 401, then the lifting ladder-shaped groove 8 is lowered. Then, the driving motor 503 is started, the rotating shaft is rotated and drives the rotating clamp 3 and the tail positioning rotating disc 6 and the battery cell head cover plate 406 and the battery cell shell 402 clamped by the tail positioning rotating disc 6 to rotate synchronously, the laser port is aligned with the welding seam between the battery cell head cover plate 406 and the battery cell shell head 404 and completes the welding by rotating. After the welding is completed, the lifting ladder-shaped groove 8 is raised to support the battery cell 4, the telescopic rod of the sliding cylinder 701 is extended and drives the tail positioning rotating disc 6 to move away from the battery cell tail end 401, and the battery cell 4 completing the circumferential welding can be taken out.

Claims

1. A cylindrical cell circumferential welding positioning tool, characterized in that: The utility model relates to a battery cell clamping device, including installation platform (1), welding end reference board (2), rotary fixture (3) and tail part positioning rotary disc (6), welding end reference board (2) fixedly arranged in installation platform (1) one side, rotary fixture (3) is rotatably installed on welding end reference board (2) through rotating shaft, rotary fixture (3) side wall is provided with the slot (301) that the positive electrode connecting column (405) on the first end cover plate (406) of power core is inserted, rotary fixture (3) end surface is provided with square clamping groove (302), square clamping groove (302) are used for placing the square protruding block (403) of clamping positive electrode connecting column (405) bottom, square clamping groove (302) are communicated with slot (301), and rotary fixture (3) is fixed with a top pin (304) for inserting in positive electrode connecting column (405) in slot (301) and is located, Tail part positioning rotary disc (6) is opposite to rotary fixture (3) and is set, tail part positioning rotary disc (6) is slidably arranged on the tail end (401) of power cell through sliding part (7) and can be clamped with rotary fixture (3) and tight power cell (4), and the one end of rotating shaft is connected with drive assembly (5) opposite to rotary fixture (3), and drive assembly (5) can drive rotary fixture (3) and tail part positioning rotary disc (6) synchronous rotation of the power cell (4) that tight cooperation is brought about.

2. The cylindrical battery cell circumferential welding positioning tooling of claim 1, wherein: The installation platform (1) is provided with the lifting ladder-shaped groove (8) for supporting the power cell shell (402) between the rotary fixture (3) and the tail part positioning rotary disc (6).

3. The cylindrical battery cell circumferential welding positioning tooling of claim 2, wherein: The installation platform (1) is provided with the lifting ladder-shaped groove (8) for supporting the power cell shell (402) between the rotary fixture (3) and the tail part positioning rotary disc (6).

4. The cylindrical battery cell circumferential welding positioning tooling of claim 1, wherein: Rotary fixture (3) includes integrally formed small cylindrical end (305) and large cylindrical end (303), small cylindrical end (305) is connected with rotating shaft, top pin (304) is arranged on the central axis of small cylindrical end (305), slot (301) is arranged on the side wall of large cylindrical end (303), and square clamping groove (302) is arranged on the end surface of large cylindrical end (303).

5. The cylindrical battery cell circumferential welding positioning tooling of claim 1, wherein: Drive assembly (5) includes drive motor (503), driving pulley (501), driven pulley (504) and transmission belt (502), driving pulley (501) is installed on the output shaft of drive motor (503), driven pulley (504) is installed on the one end of rotating shaft away from rotary fixture (3), and transmission belt (502) is sleeved between driving pulley (501) and driven pulley (504).

6. The cylindrical battery cell circumferential welding positioning tooling of claim 1, wherein: Sliding part (7) includes sliding block (703), slide rail (702) and sliding cylinder (701) for driving sliding block (703) along slide rail (702).

7. The cylindrical battery cell circumferential welding positioning tooling of claim 6, wherein: The sliding block (703) is provided with a mounting seat (601), and the tail part positioning rotary disc (6) is rotatably arranged on the mounting seat (601).

8. The cylindrical battery cell circumferential welding positioning tooling of claim 1, wherein: The tail part positioning rotary disc (6) is provided with a circumferential clamping step along the circumferential direction of the tail part positioning rotary disc (6).

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