Laser welding device for high-capacity battery

Abstract

The utility model relates to the technical field of laser welding, in particular to a laser welding device for a high-capacity battery, which comprises a working table, a controller and a support shaft, the controller is fixedly connected in a fixing groove on the front side of the working table, and the support shaft is fixedly connected at the rear part of the top of the working table. Through the arrangement of the clamping plate seat, the first limiting plate, the compression spring and the second limiting plate, the device can quickly and accurately position the battery shell and the battery cap through the first clamping plate, the second clamping plate and the third clamping plate; the first clamping plate, the second clamping plate and the third clamping plate are rapidly and accurately clamped and fixed to the top of the clamping plate base through the first limiting plate and the second limiting plate, the welding gun and the battery can be accurately aligned and then welded through the device, the position of the clamp and the position of the welding gun can be rapidly adjusted, and the welding gun and the battery to be welded are sequentially aligned; the mode is time-saving and labor-saving, and the error rate is low.

Description

Technical Field

[0001] The utility model relates to the technical field of laser welding, in particular to a laser welding device for high-capacity batteries. Background Technique

[0002] The high-capacity button battery includes a housing and a cap. The cap is closed at the opening of the housing. When sealing the button battery, it is necessary to weld the periphery of the cap to the opening of the housing by spot welding, so that the cap and the housing are fixedly connected.

[0003] In the related art, when sealing a high-capacity button battery, it is necessary to place the housing in the positioning groove of the lower fixture, cover the cap on the opening of the housing, and then snap and fix the upper fixture and the lower fixture to clamp multiple button batteries at the same time. The fixture is provided with a spot welding hole, which can allow the laser to pass through the hole for spot welding. However, some existing laser welding devices for high-capacity batteries cannot automatically align the welding gun and the fixture, and it is necessary to manually move the fixture for positioning. This method is time-consuming and laborious, and the error rate is relatively high. Therefore, a laser welding device for high-capacity batteries is proposed for the above problems. Content of the Utility Model

[0004] The purpose of the utility model is to provide a laser welding device for high-capacity batteries to solve the problem that some existing laser welding devices for high-capacity batteries cannot automatically align the welding gun and the fixture, and it is necessary to manually move the fixture for positioning. This method is time-consuming and laborious, and the error rate is relatively high.

[0005] To achieve the above purpose, the utility model provides the following technical solutions:

[0006] A laser welding device for a high-capacity battery, comprising a workbench, a controller and a support shaft. A controller is fixedly connected in a fixed slot on the front side of the workbench. A support shaft is fixedly connected to the top of the workbench at a position slightly rearward. Two limit seats symmetrically distributed in the front and rear are fixedly connected to the lower side of the horizontal shaft of the support shaft. A first adjusting rod horizontally distributed in the front and rear directions is rotatably connected between the two limit seats. A first motor is fixedly connected to the rear side of the support shaft. The front main shaft of the first motor is fixedly connected to the first adjusting rod and is rotatably connected to the support shaft. A first adjusting block is spirally connected to the outer side of the first adjusting rod. The top of the first adjusting block is slidably connected to the support shaft. The bottom of the first adjusting block is fixedly connected to a welding gun. A second adjusting rod horizontally distributed in the left and right directions is rotatably connected in an adjusting slot of the workbench. A second motor is fixedly connected in the upper adjusting slot of the workbench. The right main shaft of the second motor is fixedly connected to the second adjusting rod. A second adjusting block is spirally connected to the outer side of the second adjusting rod. The front and rear sides of the second adjusting block are both slidably connected to the workbench. The top of the second adjusting block is fixedly connected to a clamping plate seat. First limiting plates are fixedly connected to both the front and rear sides of the clamping plate seat. A pair of compression springs are fixedly connected in the accommodating slots of the clamping plate seat. Second limiting plates are fixedly connected to the relative outer sides of each pair of compression springs. The second limiting plates are slidably connected to the clamping plate seat. A first clamping plate is arranged between the two second limiting plates. The engaging protrusions of the first clamping plate are respectively engaged with a second clamping plate and a third clamping plate.

[0007] Preferably, a fixed slot is arranged at the middle position on the front side of the workbench, an adjusting slot is arranged on the upper side of the workbench, the controller is electrically connected to the first motor, the welding gun and the second motor respectively. The support shaft is of an "L" shape. A rotating slot hole is arranged in the upper half of the vertical shaft of the support shaft. Rotating slots are arranged inside the limit seats.

[0008] Preferably, thread protrusions are arranged on the outer side of the first adjusting rod, thread slot holes are arranged on the inner side of the first adjusting block, thread protrusions are arranged on the outer side of the second adjusting rod, and thread slot holes are arranged on the inner side of the second adjusting block. Two dug-out slots are arranged on both the front and rear sides of the clamping plate seat. Accommodating slots are arranged on the left and right parts of the upper side of the clamping plate seat.

[0009] Preferably, the distance between the two first limiting plates is equal to the length of the first clamping plate in the front and rear directions. The compression springs are all horizontally distributed in the left and right directions. "T" shaped blocks are arranged at the bottoms of the second limiting plates. Tooth-shaped engaging blocks are arranged on the relative inner sides of the second limiting plates.

[0010] Preferably, engaging protrusions are provided on both the left and right parts of the upper side of the first clamping plate, engaging grooves are provided on both the left and right sides of the second clamping plate and the third clamping plate, uniformly distributed battery housing limiting grooves are provided on the upper side of the first clamping plate, uniformly distributed battery cap limiting grooves are provided on the second clamping plate, and uniformly distributed laser projection holes are provided on the third clamping plate.

[0011] Compared with the prior art, the beneficial effects of the present utility model are as follows:

[0012] In the present utility model, through the provided clamping plate seat, first limiting plate, compression spring, second limiting plate, first clamping plate, second clamping plate and third clamping plate, the device can quickly and accurately position the battery housing and the battery cap through the first clamping plate, second clamping plate and third clamping plate, quickly and accurately clamp and fix the first clamping plate, second clamping plate and third clamping plate on the top of the clamping plate seat through the first limiting plate and the second limiting plate, and drive the second adjusting block and the clamping plate seat to move left and right through the rotatable second adjusting rod, and drive the first adjusting block and the welding gun to move back and forth through the rotatable first adjusting rod. The device can align the welding gun and the battery accurately before welding, and can quickly adjust the positions of the fixture and the welding gun, so that the welding gun and the battery to be welded are aligned in turn. This method is time-saving and labor-saving, and has a low error rate. Description of the Drawings

[0013] Figure 1 is a schematic diagram of the overall structure of the present utility model;

[0014] Figure 2 is a schematic diagram of the installation structure of the clamping plate seat of the present utility model;

[0015] Figure 3 is a schematic diagram of the installation structure of the welding gun of the present utility model;

[0016] Figure 4 is a sectional view of the structure of the clamping plate seat of the present utility model;

[0017] Figure 5 is a sectional view of the structure of the clamping plate group of the present utility model;

[0018] Figure 6 is a sectional view of the structure of the first clamping plate of the present utility model;

[0019] Figure 7 is a sectional view of the structure of the second clamping plate of the present utility model;

[0020] Figure 8 is a sectional view of the structure of the third clamping plate of the present utility model.

[0021] In the figure: 1, workbench; 2, controller; 3, support shaft; 4, limit seat; 5, first adjusting rod; 6, first motor; 7, first adjusting block; 8, welding gun; 9, second adjusting rod; 10, second motor; 11, second adjusting block; 12, clamping plate seat; 13, first limiting plate; 14, compression spring; 15, second limiting plate; 16, first clamping plate; 17, second clamping plate; 18, third clamping plate. Detailed implementation mode

[0022] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention.

[0023] In the description of the present invention, it should be understood that the orientation or positional relationship indicated by orientation words such as "front, rear, upper, lower, left, right", "horizontal, vertical, perpendicular, horizontal" and "top, bottom" is usually based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present invention and simplifying the description. Without contrary explanation, these orientation words do not indicate and imply that the device or element referred to must have a specific orientation or be constructed and operated in a specific orientation. Therefore, it cannot be understood as a limitation on the protection scope of the present invention; the orientation words "inside, outside" refer to the inside and outside relative to the contour of each component itself.

[0024] In addition, it should be noted that the use of words such as "first" and "second" to limit components is only for the convenience of distinguishing the corresponding components. Without otherwise stating, the above words have no special meaning. Therefore, it cannot be understood as a limitation on the protection scope of the present invention.

[0025] Please refer to Figure 1-8 , the present invention provides a technical solution:

[0026] A laser welding device for a high-capacity battery, comprising a workbench 1, a controller 2 and a support shaft 3. The controller 2 is fixedly connected in a fixed groove on the front side of the workbench 1, and the support shaft 3 is fixedly connected to the top of the workbench 1 at a position slightly to the rear. Two symmetrically distributed limit seats 4 are fixedly connected to the lower side of the horizontal shaft of the support shaft 3. A first adjusting rod 5 horizontally distributed in the front-rear direction is rotatably connected between the two limit seats 4. A first motor 6 is fixedly connected to the rear side of the support shaft 3. The front main shaft of the first motor 6 is fixedly connected to the first adjusting rod 5 and is rotatably connected to the support shaft 3. A first adjusting block 7 is screwed on the outer side of the first adjusting rod 5. The top of the first adjusting block 7 is slidably connected to the support shaft 3, and the bottom of the first adjusting block 7 is fixedly connected to a welding gun 8. A second adjusting rod 9 horizontally distributed in the left-right direction is rotatably connected in an adjusting groove of the workbench 1. A second motor 10 is fixedly connected in the upper adjusting groove of the workbench 1. The right main shaft of the second motor 10 is fixedly connected to the second adjusting rod 9. A second adjusting block 11 is screwed on the outer side of the second adjusting rod 9. The front and rear sides of the second adjusting block 11 are both slidably connected to the workbench 1. The top of the second adjusting block 11 is fixedly connected to a clamping plate seat 12. First limiting plates 13 are fixedly connected to the front and rear sides of the clamping plate seat 12. A pair of compression springs 14 are fixedly connected in the receiving grooves of the clamping plate seat 12. Second limiting plates 15 are fixedly connected to the opposite outer sides of each pair of compression springs 14. The second limiting plates 15 are slidably connected to the clamping plate seat 12. A first clamping plate 16 is provided between the two second limiting plates 15. The engaging protrusions of the first clamping plate 16 are respectively engaged with a second clamping plate 17 and a third clamping plate 18.

[0027] A fixing groove is provided at the middle position on the front side of the workbench 1, and an adjusting groove is provided on the upper side of the workbench 1. The controller 2 is electrically connected to the first motor 6, the welding gun 8, and the second motor 10 respectively. The support shaft 3 has an "L" - shaped structure. A rotating groove hole is provided in the upper half of the vertical shaft of the support shaft 3. Rotating grooves are provided inside the limit seats 4. The first adjusting rod 5 can rotate stably through the limit seats 4. Threaded protrusions are provided on the outer side of the first adjusting rod 5, threaded groove holes are provided on the inner side of the first adjusting block 7, threaded protrusions are provided on the outer side of the second adjusting rod 9, and threaded groove holes are provided on the inner side of the second adjusting block 11. Two digging grooves are provided on both the front and rear sides of the clamping plate seat 12, and accommodating grooves are provided on the left and right parts of the upper side of the clamping plate seat 12. The first clamping plate 16, the second clamping plate 17, and the third clamping plate 18 can be driven to move left and right through the second adjusting block 11 and the clamping plate seat 12. The distance between the two first limiting plates 13 is equal to the length of the first clamping plate 16 in the front - rear direction. The compression springs 14 are horizontally distributed in the left - right direction. "T" - shaped blocks are provided at the bottoms of the second limiting plates 15, and tooth - shaped engaging blocks are provided on the relative inner sides of the second limiting plates 15. The first clamping plate 16, the second clamping plate 17, and the third clamping plate 18 can be fixed through the first limiting plates 13 and the second limiting plates 15. Engaging protrusions are provided on the left and right parts of the upper side of the first clamping plate 16, engaging grooves are provided on the left and right sides of the second clamping plate 17 and the third clamping plate 18. Battery housing limiting grooves are evenly distributed on the upper side of the first clamping plate 16, battery cap limiting grooves are evenly distributed on the second clamping plate 17, and laser projection holes are evenly distributed on the third clamping plate 18. The battery housing and the battery cap can be quickly aligned through the first clamping plate 16, the second clamping plate 17, and the third clamping plate 18.

[0028] Workflow: Before use, connect the power supply. The controller 2, the first motor 6, the welding gun 8, and the second motor 10 of this device are all electrical instruments. The controller 2 is electrically connected to the first motor 6, the welding gun 8, and the second motor 10 respectively. Manually operating the controller 2 can adjust the operating states of the first motor 6, the welding gun 8, and the second motor 10 respectively. Through the controller 2, it can be set that the first motor 6 and the second motor 10 automatically stop after rotating a specific number of turns each time. All of the above are prior arts. When using this device, first push the two second limit plates 15 away from each other to make the compression spring 14 in a stretched state. Through the grooves on the front and rear sides of the clamping plate seat 12, it is convenient to push the first clamping plate 16 upward, and then the first clamping plate 16, the second clamping plate 17, and the third clamping plate 18 can be removed from the upper side of the clamping plate seat 12. Then, the second clamping plate 17 and the third clamping plate 18 are removed from the first clamping plate 16. The battery housing limit groove of the first clamping plate 16, the battery cap limit groove of the second clamping plate 17, and the laser projection hole of the third clamping plate 18 are aligned vertically. Place the battery housing in the battery housing limit groove of the first clamping plate 16, place the second clamping plate 17 on the upper side of the first clamping plate 16, place the battery cap in the battery cap limit groove of the second clamping plate 17, place the third clamping plate 18 on the upper side of the second clamping plate 17, and then put the first clamping plate 16, the second clamping plate 17, and the third clamping plate 18 back on the upper side of the clamping plate seat 12. Limit them through the first limit plate 13 and the second limit plate 15. Clamp the first clamping plate 16, the second clamping plate 17, and the third clamping plate 18 through the second limit plate 15 to make the first clamping plate 16, the second clamping plate 17, and the third clamping plate 18 fit tightly. At this time, the clamping plate seat 12 is located on the right side of the workbench 1. The battery to be welded at the lower left end is located directly below the welding gun 8. The laser of the welding gun 8 can pass through the laser projection hole of the third clamping plate 18. Control the welding gun 8 to perform welding through the controller 2. Then, control the second motor 10 to rotate through the controller 2. The second motor 10 can drive the second adjusting rod 9 to rotate, and then the second adjusting block 11 drives the clamping plate seat 12 to move leftward. The second motor 10 automatically stops after rotating a specific number of turns. The distance that the clamping plate seat 12 moves leftward is equal to the distance between two adjacent batteries to be welded in the left-right direction. Therefore, the next battery to be welded can be located directly below the welding gun 8, and welding can be continued. Repeated operations can weld a row of batteries. After welding a row of batteries, the clamping plate seat 12 is located on the left side of the workbench 1. Control the first motor 6 located behind the support shaft 3 to rotate through the controller 2. The first motor 6 can drive the first adjusting rod 5 limited by the limit seat 4 to rotate, and then drive the welding gun 8 to move backward through the first adjusting block 7. The first motor 6 automatically stops after rotating a specific number of turns. The distance that the welding gun 8 moves backward is equal to the distance between two adjacent batteries to be welded in the front-rear direction. Therefore, the next row of batteries to be welded can be located directly below the welding gun 8. Reverse the second motor 10, and welding can be continued. Repeated operations can weld multiple rows of batteries;The device can quickly and accurately position the battery case and the battery cap through the first clamping plate 16, the second clamping plate 17, and the third clamping plate 18, quickly and accurately snap and fix the first clamping plate 16, the second clamping plate 17, and the third clamping plate 18 on the top of the clamping plate seat 12 through the first limiting plate 13 and the second limiting plate 15, drive the second adjusting block 11 and the clamping plate seat 12 to move left and right through the rotatable second adjusting rod 9, and drive the first adjusting block 7 and the welding gun 8 to move back and forth through the rotatable first adjusting rod 5. The device can align the welding gun 8 and the battery accurately before welding, and can quickly adjust the position of the fixture and the position of the welding gun 8, so that the welding gun 8 and the battery to be welded are aligned in turn. This method is time-saving and labor-saving, and has a low error rate.

[0029] The content not described in detail in this specification belongs to the prior art well-known to those skilled in the art. The standard parts used in the present utility model can all be purchased from the market. The special-shaped parts can be customized according to the description in the specification and the drawings. The specific connection methods of each part all adopt conventional means such as bolts, rivets, and welding that are mature in the prior art. The machines, parts, and equipment all adopt conventional models in the prior art. Coupled with the circuit connection adopting the conventional connection method in the prior art, it will not be elaborated here.

[0030] Although the embodiments of the present utility model have been shown and described, those of ordinary skill in the art can understand that various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principle and spirit of the present utility model. The scope of the present utility model is defined by the appended claims and their equivalents.

Claims

1. A laser welding device for a high-capacity battery, comprising a workbench (1), a controller (2) and a support shaft (3), characterized in that: A controller (2) is fixedly connected in a front fixing groove of the workbench (1). A support shaft (3) is fixedly connected to the top rear side of the workbench (1). Two front and rear symmetrically distributed limit seats (4) are fixedly connected to the lower side of the horizontal shaft of the support shaft (3). A first adjusting rod (5) horizontally distributed in the front and rear direction is rotatably connected between the two limit seats (4). A first motor (6) is fixedly connected to the rear side of the support shaft (3). The front main shaft of the first motor (6) is fixedly connected to the first adjusting rod (5), and the front main shaft of the first motor (6) is rotatably connected to the support shaft (3). A first adjusting block (7) is screwed on the outer side of the first adjusting rod (5). The top of the first adjusting block (7) is slidably connected to the support shaft (3). The bottom of the first adjusting block (7) is fixedly connected to a welding gun (8). A second adjusting rod (9) horizontally distributed in the left and right direction is rotatably connected in an adjusting groove of the workbench (1). A second motor (10) is fixedly connected in an upper adjusting groove of the workbench (1). The right main shaft of the second motor (10) is fixedly connected to the second adjusting rod (9). A second adjusting block (11) is screwed on the outer side of the second adjusting rod (9). The front and rear sides of the second adjusting block (11) are both slidably connected to the workbench (1). The top of the second adjusting block (11) is fixedly connected to a clamping plate seat (12). First limiting plates (13) are fixedly connected to the front and rear sides of the clamping plate seat (12). A pair of compression springs (14) are fixedly connected in the accommodating grooves of the clamping plate seat (12). Second limiting plates (15) are fixedly connected to the relative outer sides of each pair of compression springs (14). The second limiting plates (15) are slidably connected to the clamping plate seat (12). A first clamping plate (16) is arranged between the two second limiting plates (15). The engaging protrusions of the first clamping plate (16) are respectively engaged with a second clamping plate (17) and a third clamping plate (18).

2. The laser welding device for a high-capacity battery according to claim 1, characterized in that: A fixing groove is arranged at the middle position on the front side of the workbench (1), and an adjusting groove is arranged on the upper side of the workbench (1). The controller (2) is electrically connected to the first motor (6), the welding gun (8), and the second motor (10) respectively. The support shaft (3) is of an "L" shape structure. A rotating groove hole is arranged on the upper half part of the vertical shaft of the support shaft (3), and rotating grooves are arranged inside the limit seats (4).

3. The laser welding device for a high-capacity battery according to claim 1, characterized in that: Threaded protrusions are arranged on the outer side of the first adjusting rod (5), and threaded groove holes are arranged inside the first adjusting block (7). Threaded protrusions are arranged on the outer side of the second adjusting rod (9), and threaded groove holes are arranged inside the second adjusting block (11). Two dug grooves are arranged on the front and rear sides of the clamping plate seat (12), and accommodating grooves are arranged on the left and right two parts on the upper side of the clamping plate seat (12).

4. The laser welding device for a high-capacity battery according to claim 1, characterized in that: The distance between the two first limiting plates (13) is equal to the length of the first clamping plate (16) in the front-back direction, the compression springs (14) are horizontally distributed in the left-right direction, the bottom of each second limiting plate (15) is provided with a "T"-shaped block, and the opposite inner sides of the second limiting plates (15) are both provided with toothed engaging blocks.

5. The laser welding device for a high-capacity battery according to claim 1, characterized in that: On the upper side of the first clamping plate (16), engaging protrusions are provided on both the left and right parts, engaging grooves are provided on both the left and right sides of the second clamping plate (17) and the third clamping plate (18), uniformly distributed battery housing limiting grooves are provided on the upper side of the first clamping plate (16), uniformly distributed battery cap limiting grooves are provided on the second clamping plate (17), and uniformly distributed laser projection holes are provided on the third clamping plate (18).

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