Double-station lithium battery laser welding clamp

Abstract

The utility model discloses a double-station lithium battery laser welding clamp, and particularly relates to the technical field of welding clamps, the double-station lithium battery laser welding clamp comprises a base, the top end of the base is rotatably connected with a mounting table, the two sides of the top end of the mounting table are provided with clamps, the clamps comprise a first clamp, a second clamp and a third clamp, and the third clamp is arranged at the corresponding end of the mounting table through a bolt. The side, away from the mounting table, of the third clamp is provided with a plurality of second semicircular grooves, the second clamp is arranged on the side, away from the mounting table, of the third clamp, and the side, facing the third clamp, of the second clamp is provided with a plurality of first semicircular grooves in one-to-one correspondence with the second semicircular grooves. A battery is clamped through the second clamp and the third clamp, the first semicircular groove and the second semicircular groove are buckled to form a complete round hole, the lithium battery is clamped in the round hole, the cylindrical lithium battery makes full contact with the clamps, and the clamping force and precision are greatly improved.

Description

Technical Field

[0001] This utility model relates to the field of welding fixture technology, specifically to a dual-station lithium battery laser welding fixture. Background Technology

[0002] A lithium battery is a device that stores and releases electrical energy by the migration of lithium ions between positive and negative electrodes. Small lithium batteries are commonly used in electronic products such as mobile phones and computers, while large lithium batteries are commonly used in transportation vehicles such as electric vehicles and new energy vehicles.

[0003] Laser welding is required during the production and processing of lithium batteries. During welding, lithium batteries are fixed with special fixtures. However, existing laser welding fixtures only have three points of contact with the battery, resulting in insufficient clamping force.

[0004] In addition, the laser's action on the lithium battery will generate heat accumulation, and there is no way to eliminate the heat generated by the laser, which will affect the metallic lithium in the lithium battery cell and cause the metallic lithium to degenerate. Utility Model Content

[0005] The purpose of this invention is to provide a dual-station lithium battery laser welding fixture. The first and second semicircular grooves are fastened together to form a complete circular hole, which clamps the lithium battery in the circular hole. The cylindrical lithium battery thus makes full contact with the fixture, greatly improving the clamping force and accuracy.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a dual-station lithium battery laser welding fixture, including a base, a mounting platform rotatably connected to the top of the base, and clamps provided on both sides of the top of the mounting platform.

[0007] The fixture includes fixture one, fixture two, and fixture three. Fixture three is bolted to one end of the mounting platform. Fixture three has multiple second semicircular grooves on the side away from the mounting platform. Fixture two is located on the side of fixture three away from the mounting platform. Fixture two has multiple first semicircular grooves on the side facing fixture three that correspond one-to-one with the second semicircular grooves. The first semicircular grooves are aligned with the corresponding second semicircular grooves. The first semicircular grooves and the corresponding second semicircular grooves can be combined to form a complete circular hole.

[0008] The first clamp is located at the bottom of the second and third clamps and is detachably connected to the mounting platform. The first clamp has multiple external slots, each corresponding to a first semicircular slot, and is located directly below the corresponding first semicircular slot.

[0009] Furthermore, the bottom end of the second clamp is fixedly provided with two sliding bars, and the top end of the first clamp is provided with two slides. The two sliding bars are respectively embedded in the two slides, so the second clamp can slide horizontally at the top end of the first clamp. On the side of the second clamp away from the third clamp, a plurality of cushioning pads are fixedly provided to provide cushioning. The position of the cushioning pads corresponds to that of the ejector pin.

[0010] Furthermore, two elastic components are provided at the connection between clamp two and clamp three, with the two elastic components located on the front and rear sides of the connection respectively.

[0011] The elastic component includes a return spring, and L-shaped mounting pieces are fixed at both ends of the return spring. The two L-shaped mounting pieces are respectively bolted to clamp two and clamp three. The return spring enables clamp two to maintain a distance from clamp three when no force is applied.

[0012] Furthermore, the top of the mounting platform is provided with an air-cooling component, which is located between two clamps.

[0013] Furthermore, the air-cooling assembly includes an air box fixedly mounted on the top of the mounting platform. The top of the air box is bolted with a cover plate, and the top of the cover plate is equipped with two fans that draw outside air into the air box.

[0014] Furthermore, a partition plate is fixed on the inner wall of the air box to separate the air blown into the air box by the two fans. Exhaust ducts are provided on both sides of the air box. The exhaust ducts are inclined, so the air blown out of the exhaust ducts flows downward at an angle and can blow towards the clamp.

[0015] In the above technical solution, the technical effects and advantages provided by this utility model are as follows: 1. The battery is clamped by clamp two and clamp three. The first semicircular groove and the second semicircular groove are engaged to form a complete circular hole, which clamps the lithium battery in the circular hole. The cylindrical lithium battery is thus in full contact with the clamp, which greatly improves the clamping force and accuracy.

[0016] 2. When clamping lithium batteries, the increased contact surface allows the lithium battery to fully transfer heat to the clamp during the welding process. The clamp is made of chromium zirconium copper with excellent thermal conductivity, which can conduct and dissipate heat, thereby reducing the thermal corrosion of the metallic lithium in the battery cell caused by heat. Attached Figure Description

[0017] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in this utility model. For those skilled in the art, other drawings can be obtained based on these drawings.

[0018] Figure 1 This is an overall structural diagram of the present invention.

[0019] Figure 2 This is a structural diagram of the clamp of this utility model.

[0020] Figure 3 This is a structural diagram of the clamp of this utility model.

[0021] Figure 4 This is a three-dimensional structural diagram of the fixture of this utility model.

[0022] Figure 5 This is a structural diagram of the elastic component of this utility model.

[0023] Figure 6 This is an exploded view of the air-cooled component of this utility model.

[0024] Figure 7 This is a cross-sectional view of the bellows of this utility model.

[0025] Explanation of reference numerals in the attached drawings: 1. Base; 2. Mounting platform; 3. Air-cooled assembly; 301. Air box; 302. Partition plate; 303. Exhaust duct; 304. Cover plate; 305. Fan; 4. Fixture 1; 401. External groove; 402. Slide rail; 5. Fixture 2; 501. First semi-circular groove; 502. Buffer pad; 503. Sliding strip; 6. Fixture 3; 601. Second semi-circular groove; 7. Elastic assembly; 701. Return spring; 702. L-shaped mounting plate. Detailed Implementation

[0026] To enable those skilled in the art to better understand the technical solution of this utility model, the present utility model will be further described in detail below with reference to the accompanying drawings.

[0027] This utility model provides, for example Figure 1-7 The dual-station lithium battery laser welding fixture shown includes a base 1, with a mounting platform 2 rotatably connected to the top of the base 1, and clamps provided on both sides of the top of the mounting platform 2.

[0028] The fixture includes a first fixture 4, a second fixture 5, and a third fixture 6. The third fixture 6 is bolted to one end of the mounting platform 2. The side of the third fixture 6 away from the mounting platform 2 has a plurality of second semicircular grooves 601. The second fixture 5 is located on the side of the third fixture 6 away from the mounting platform 2. The side of the second fixture 5 facing the third fixture 6 has a plurality of first semicircular grooves 501 that correspond one-to-one with the second semicircular grooves 601. The first semicircular grooves 501 are aligned with the corresponding second semicircular grooves 601. The first semicircular grooves 501 and the corresponding second semicircular grooves 601 can be combined to form a complete circular hole.

[0029] The first clamp 4 is located at the bottom of the second clamp 5 and the third clamp 6 and is detachably connected to the mounting platform 2. The first clamp 4 has a plurality of external grooves 401, which correspond one-to-one with the first semicircular groove 501. The external grooves 401 are located directly below the corresponding first semicircular groove 501.

[0030] Since the mounting platform 2 can rotate on the base 1, the rotation of the mounting platform 2 can drive the fixture to rotate. The welding equipment is located on one side of the mounting platform 2. Therefore, the mounting platform 2 drives the two sets of fixtures to perform welding work alternately. When clamping the lithium battery, the second fixture 5 and the third fixture 6 contact each other. The first semi-circular groove 501 and the second semi-circular groove 601 are engaged to form a complete circular hole, clamping the lithium battery in the circular hole. The cylindrical lithium battery thus makes full contact with the fixture, which greatly improves the clamping force and accuracy. In addition, the increased contact surface allows the lithium battery to fully transfer heat to the fixture during the welding process. The fixture is made of chromium zirconium copper with excellent thermal conductivity, which can conduct and dissipate heat, thereby reducing the thermal corrosion of the metallic lithium in the battery cell caused by heat.

[0031] The battery is clamped by clamp 2 (5) and clamp 3 (6), as follows: Figure 1-4 As shown, the bottom end of the second clamp 5 is fixedly provided with two sliding bars 503, and the top end of the first clamp 4 is provided with two slides 402. The two sliding bars 503 are respectively embedded in the two slides 402, so the second clamp 5 can slide horizontally at the top end of the first clamp 4. On the side of the second clamp 5 away from the third clamp 6, a plurality of cushioning pads 502 are fixedly provided to play a buffering role. The position of the cushioning pads 502 corresponds to that of the ejector pin.

[0032] The distance between clamp 25 and clamp 36 is controlled by the sliding of clamp 25 on clamp 14. When the cylinder drives the ejector pin to push clamp 25 to move closer to clamp 36, the lithium battery is clamped. The buffer pad 502 is located at the part where the ejector pin contacts clamp 25, so as to play a buffering role when the ejector pin is impacted, and avoid damage to the ejector pin or clamp 25.

[0033] When no force is applied, clamps 2 (5) and 3 (6) should automatically release the lithium battery, such as... Figure 1 , 5 As shown, two elastic components 7 are provided at the connection between clamp 2 5 and clamp 3 6, and the two elastic components 7 are located on the front and rear sides of the connection respectively.

[0034] The elastic component 7 includes a return spring 701. Both ends of the return spring 701 are fixedly provided with L-shaped mounting pieces 702. The two L-shaped mounting pieces 702 are respectively bolted to clamp 2 5 and clamp 3 6. The return spring 701 can make clamp 2 5 maintain a distance from clamp 3 6 when no force is applied.

[0035] The cylinder drives the ejector pin, which pushes the second clamp 5 to slide on the top of the first clamp 4. When the second clamp 5 approaches the third clamp 6, the return spring 701 is compressed. In this way, the elastic force of the return spring 701 can be used to buffer the pushing force of the cylinder. After welding is completed, the elastic force of the return spring 701 is released, pushing the second clamp 5 away from the third clamp 6, thereby releasing the welded lithium battery.

[0036] To improve the cooling efficiency of the fixture, such as Figure 1 , 6 As shown in Figures 7 and 8, the top of the mounting platform 2 is provided with an air-cooling component 3, which is located between two clamps.

[0037] The air-cooled assembly 3 includes an air box 301 fixedly mounted on the top of the mounting platform 2. The top of the air box 301 is bolted to a cover plate 304. The top of the cover plate 304 is provided with two fans 305, which input external air into the air box 301.

[0038] A partition 302 is fixedly provided on the inner wall of the air box 301 to serve as a separator. The partition 302 separates the air blown into the air box 301 by the two fans 305. An exhaust trough 303 is provided on both sides of the air box 301. The exhaust trough 303 is inclined, so the air blown out of the exhaust trough 303 flows downward at an angle and can blow towards the clamp.

[0039] Fan 305 blows air into the air box 301. The air inside the air box 301 is then blown onto the fixture through the exhaust duct 303. The air force accelerates the dissipation of heat from the fixture. The heat carried by the fixture comes from the lithium battery, thus improving the heat dissipation efficiency of the lithium battery. The partition 302 separates the interior of the air box 301 to dissipate heat from the two fixtures separately. When one fixture is performing welding work, the other fixture, which is not in operation, is cooled by air, thus cooling the two fixtures alternately.

[0040] The foregoing description only illustrates certain exemplary embodiments of the present invention. Undoubtedly, those skilled in the art can modify the described embodiments in various ways without departing from the spirit and scope of the present invention. Therefore, the above drawings and descriptions are illustrative in nature and should not be construed as limiting the scope of protection of the claims of the present invention.

Claims

1. A dual-station lithium battery laser welding fixture, comprising a base (1), wherein a mounting platform (2) is rotatably connected to the top of the base (1), characterized in that: The mounting platform (2) is equipped with clamps on both sides of its top end; The fixture includes a first fixture (4), a second fixture (5), and a third fixture (6). The third fixture (6) is bolted to one end of the mounting platform (2). The third fixture (6) has multiple second semicircular grooves (601) on the side away from the mounting platform (2). The second fixture (5) is located on the side of the third fixture (6) away from the mounting platform (2). The second fixture (5) has multiple first semicircular grooves (501) on the side facing the third fixture (6) that correspond one-to-one with the second semicircular grooves (601). The first semicircular grooves (501) are aligned with the corresponding second semicircular grooves (601). The first semicircular grooves (501) and the corresponding second semicircular grooves (601) can be combined to form a complete circular hole. The first clamp (4) is located at the bottom of the second clamp (5) and the third clamp (6) and is detachably connected to the mounting platform (2). The first clamp (4) has multiple external grooves (401), which correspond one-to-one with the first semicircular groove (501). The external groove (401) is located directly below the corresponding first semicircular groove (501).

2. The dual-station lithium battery laser welding fixture according to claim 1, characterized in that: The bottom end of the clamp two (5) is fixed with two sliding strips (503), and the top end of the clamp one (4) has two slides (402). The two sliding strips (503) are respectively embedded in the two slides (402). The side of the clamp two (5) away from the clamp three (6) is fixed with multiple cushioning pads (502) that play a buffering role.

3. The dual-station lithium battery laser welding fixture according to claim 1, characterized in that: Two elastic components (7) are provided at the connection between clamp two (5) and clamp three (6), and the two elastic components (7) are located on the front and rear sides of the connection respectively; The elastic component (7) includes a return spring (701), and both ends of the return spring (701) are fixedly provided with L-shaped mounting pieces (702). The two L-shaped mounting pieces (702) are respectively mounted on clamp two (5) and clamp three (6) by bolts.

4. The dual-station lithium battery laser welding fixture according to claim 1, characterized in that: The mounting platform (2) is equipped with a wind-cooling component (3) at its top, and the wind-cooling component (3) is located between two clamps.

5. The dual-station lithium battery laser welding fixture according to claim 4, characterized in that: The air-cooled assembly (3) includes a bellows (301) fixedly mounted on the top of the mounting platform (2). The top of the bellows (301) is provided with a cover plate (304) by bolts, and the top of the cover plate (304) is provided with two fans (305).

6. The dual-station lithium battery laser welding fixture according to claim 5, characterized in that: The inner wall of the bellows (301) is fixed with a partition (302) that serves as a separator. Both sides of the bellows (301) are provided with exhaust ducts (303), and the air blown out by the exhaust ducts (303) flows downward at an angle.

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