Accurate welding and packaging equipment for lithium battery production

Abstract

The invention relates to the field of welding devices, in particular to precise welding and packaging equipment for lithium battery production, which structurally comprises a welding part, a feeding part, a laser, a feeding box, a conveying frame, a sliding rail, a first slidable material moving frame, a second slidable material moving frame, a first welding part, a second welding part, a third welding part and a fourth welding part, and is characterized in that the feeding box is fixed on the surface of the laser, and the side edge of the feeding box is provided with a material conveying frame; according to the improved device, a second push rod drives a suction rod on the surface of a transverse plate to move up and down so as to suck out connecting pieces horizontally placed and clamped in a charging box, pollution caused by touching the connecting pieces by hands is reduced, and meanwhile a moving frame formed by a first material moving frame and a second material moving frame at the bottom is driven by a belt of a first driver; the connecting piece is driven to horizontally move to the mounting position, meanwhile, a laser is used for removing impurities to reduce dirt on the surface, the first frame body is provided with a second driver which can drive a first clamping block to turn over, the two faces of the connecting piece can be cleaned, the cleanliness of the attaching face of the connecting piece and an electrode is improved, and welding is firmer.

Description

Technical Field

[0001] The invention relates to precise welding and packaging equipment for lithium battery production, belonging to the field of welding devices. Background Art

[0002] With the development of science and technology, lithium batteries have become mainstream and are widely used in mobile phones, laptops, calculators, electric vehicles and other fields. During use, there are single-cell and multi-cell usage methods. In particular, in the production of large-capacity batteries, multiple cells are packaged in series and parallel to achieve different uses.

[0003] At present, when packaging multiple cells, connecting pieces are used as conductors and connected in series and parallel by laser welding. However, when welding square battery combinations, the connecting pieces are in contact with air for a long time, and the material is manually discharged. During welding, pollutants decompose and may form welding explosion points. If the dirt and oxides on the connecting pieces lead to poor contact, it may cause safety hazards such as battery overheating, expansion, leakage, and even explosion. This will not only damage the equipment, but also threaten the safety of personnel. Summary of the invention

[0004] In view of the shortcomings of the prior art, the purpose of the present invention is to provide a precise welding packaging equipment for lithium battery production to solve the above problems.

[0005] In order to achieve the above-mentioned purpose, the present invention is implemented through the following technical solutions: a precise welding and packaging equipment for lithium battery production, whose structure includes: a welding part, a first slide rail and a second slide rail, the welding part is installed on the surface of the first slide rail and is movably connected to the first slide rail, the welding part moves horizontally on the second slide rail through the first slide rail, the second slide rail is fixed on the top of the machine body, a conveyor belt is provided on the top of the machine body, the welding part includes a charging box and a laser, the charging box is fixed on the surface of the laser, a feeding rack is provided on the side of the charging box, a slide rail is provided at the bottom of the feeding rack, a slidable first material moving rack is provided between the racks, and the surface of the laser A first push rod is also installed, and a protective rod is provided on the main shaft of the first push rod. The protective rod is driven downward by the first push rod, and a second push rod is installed on the surface of the frame. The main shaft of the second push rod is provided with a horizontal plate, and a suction rod opposite to the loading box is provided through the horizontal plate. The connecting piece loaded inside the loading box is vertically transported by the second push rod and is engaged between the material movers. The first driver of the material mover is installed on the side of the frame, and the first material moving frame of the material mover is provided in the slide rail at the bottom of the frame, and an auxiliary pulley of the material mover is also provided at the end. A transmission belt is provided between the first driver and the auxiliary pulley, and the transmission belt cooperates with the first material moving frame. The rotation of the first driver drives the first material moving frame to move horizontally.

[0006] Preferably, the material mover also includes a limiting rod, a rod frame and a second material moving rack. The first material moving rack and the second material moving rack are relatively installed on the surface of the frame slide rail. The second material moving rack is provided with a rod frame on the opposite side of the first material moving rack, and a limiting rod is provided inside the rod frame. A return spring is provided on one side of the limiting rod, and a range spring is provided on one side movably connected to the rod frame. When the horizontal plate is pressed down, one end of the limiting rod can be separated from the rod frame.

[0007] Preferably, a groove is provided on the surface of the transverse plate, the groove is opposite to the limiting rod, and a pulley is provided in the groove.

[0008] Preferably, the first material moving rack includes a first frame body, a sliding groove sliding with the frame body is provided inside the first frame body, a second driver is provided on the side of the first frame body, a first clamping block is provided on the opposite side of the second driver, the second driver drives the first clamping block to rotate, the first frame body is fixed to the rod frame to form an integrated structure, and a torsion spring is provided on the side of the limiting rod close to the first frame body, which cooperates with the rod frame through the torsion spring.

[0009] Preferably, the first material moving rack includes a second frame body, the second frame body is provided with a clamping groove cooperating with the transmission belt connected to the first driver, the side of the second frame body is provided with a second clamping block, the second frame body is movably connected to the second clamping block, and the rod frame connected to the second frame body is provided with a clamping plate and a limiting structure formed by an extrusion plate.

[0010] Preferably, the clamping plate and the extrusion plate are movably connected to the groove body through a sliding rod, and the sliding rod is reset by a reset spring at the end. Racks are provided on the opposite surfaces of the clamping plate and the extrusion plate, and a steering gear is provided between the racks. The limiting rod drives the extrusion plate to drive the steering gear to rotate and drive the clamping plate to retract, the clamping plate is separated from the surface of the frame slide rail, the limiting rod is separated from the extrusion plate, and the clamping plate is pressed against the frame slide rail.

[0011] Preferably, the first clamping block comprises a first protrusion, a block body, and a second protrusion. The first protrusion and the second protrusion are located on the surface of the block body, and a locking groove is formed between the first protrusion and the second protrusion.

[0012] Preferably, the first bump is conical, and a height of the first bump protruding from the surface of the block body is smaller than a height of the second bump protruding from the surface of the block body.

[0013] Preferably, the second clamp block has the same structure as the first clamp block, and the second clamp block and the first clamp block are made of rubber.

[0014] Preferably, a rubber pad is provided on the contact surface between the clamping plate and the frame slide rail.

[0015] The present invention provides a precise welding and packaging device for lithium battery production, which has the following effects: the improved device drives the suction rod on the surface of the horizontal plate to move up and down through the second push rod to suck out the connecting piece that is flatly clamped inside the charging box, thereby reducing the pollution caused by touching the connecting piece by hand; at the same time, the moving frame formed by the first material moving frame and the second material moving frame at the bottom is driven by the belt of the first driver to drive the connecting piece to move horizontally to the installation position; at the same time, the laser is used to remove impurities and reduce surface dirt; and because the first frame is provided with the second driver, it can drive the first clamp to flip, so that both sides of the connecting piece can be cleaned, thereby improving the cleanliness of the surface fitting with the electrode, and the welding is more firm.

[0016] By driving the bottom protective rod to press by the first push rod, the connecting piece can be installed more quickly and accurately, and compared with manual work, secondary pollution can be avoided. The pressing and welding process can be completed in one step, thereby improving production efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Other features, objects and advantages of the present invention will become more apparent from the detailed description of non-limiting embodiments made with reference to the following drawings:

[0018] Figure 1 The present invention is a structural schematic diagram of a precise welding packaging device for lithium battery production.

[0019] Figure 2 It is a structural schematic diagram of the welding part of the present invention.

[0020] Figure 3 It is a schematic structural diagram of the material conveyor and material mover of the present invention.

[0021] Figure 4 It is a schematic cross-sectional structural diagram of the second material moving rack of the present invention.

[0022] Figure 5 It is a schematic cross-sectional structural diagram of the first material moving rack of the present invention.

[0023] Figure 6 It is a bottom view structural schematic diagram of the welding part of the present invention.

[0024] Figure 7 It is a schematic diagram of the action structure of the limit rod of the present invention.

[0025] Figure 8 It is a schematic diagram of the structure of the connection piece and the charging box of the present invention.

[0026] In the figure:

[0027] 1. Welding part; 2. First slide rail; 3. Second slide rail; 4. Conveyor belt; 5. Machine body;

[0028] 11. Loading box; 12. Laser; 13. Material mover; 14. Protection rod; 15. Material conveyor; 16. First push rod;

[0029] 131. first material moving rack; 132. first driver; 133. limit rod; 134. rod rack; 135. second material moving rack; 136. auxiliary pulley;

[0030] 150, frame; 151, second push rod; 152, horizontal plate; 153, pulley; 154, suction rod;

[0031] 351, first frame; 352, second driver; 353, first clamping block; 354, slide slot;

[0032] 311, second frame; 312, clamping groove; 313, second clamping block; 314, clamping plate; 315, extrusion plate; 316, steering gear; 317, sliding rod; 318, return spring;

[0033] 531, first bump; 532, block; 533, second bump. DETAILED DESCRIPTION

[0034] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, rather than all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention. Therefore, the following detailed description of the embodiments of the present invention provided in the drawings is not intended to limit the scope of the invention claimed for protection, but merely represents the selected embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention.

[0035] In the description of the present invention, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of the features. In the description of the present invention, the meaning of "plurality" is two or more, unless otherwise clearly and specifically defined.

[0036] Due to long-term contact with air and manual material discharge, the existing connecting pieces may form welding explosion points due to the decomposition of pollutants during welding. If the dirt and oxides on the connecting pieces lead to poor contact, it may cause safety hazards such as battery overheating, expansion, leakage and even explosion. Therefore, in order to solve the above problems, this case proposes the following technical solutions:

[0037] See also Figures 1 to 8 The present invention provides a technical solution for precise welding and packaging equipment for lithium battery production: its structure includes: a welding part 1, a first slide rail 2 and a second slide rail 3, the welding part 1 is installed on the surface of the first slide rail 2 and is movably connected to the first slide rail 2, the welding part 1 moves horizontally on the second slide rail 3 through the first slide rail 2, the second slide rail 3 is fixed on the top of the machine body 5, and a conveyor belt 4 is provided on the top of the machine body 5, the welding part 1 includes a charging box 11 and a laser 12, the charging box 11 is fixed on the surface of the laser 12, a feeding rack 15 is provided on the side of the charging box 11, a sliding rail is provided at the bottom of a frame 150 of the feeding rack 15, a slidable first material moving rack 131 is provided between the frames 150, a first push rod 16 is also installed on the surface of the laser 12, and a protective rod 14 is provided on the main shaft of the first push rod 16, The protective rod 14 is driven downward by the first push rod 16, and a second push rod 151 is installed on the surface of the frame 150. The main shaft of the second push rod 151 is provided with a cross plate 152, and a suction rod 154 opposite to the loading box 11 is set through the cross plate 152. The connecting piece loaded inside the loading box 11 is vertically transported by the second push rod 151 and is engaged between the material movers 13. The first driver 132 of the material mover 13 is installed on the side of the frame 150, and the first material moving frame 131 of the material mover 13 is provided in the slide rail at the bottom of the frame 150, and the auxiliary pulley 136 of the material mover 13 is also installed at the end. A transmission belt is provided between the first driver 132 and the auxiliary pulley 136, and the transmission belt cooperates with the first material moving frame 131. The rotation of the first driver 132 drives the first material moving frame 131 to move horizontally.

[0038] In this embodiment, the main structure of the device includes a body 5, a conveyor belt 4 for conveying battery packs is provided on the top of the body 5, and the battery packs are fixed in advance by tape after assembly. A second slide rail 3 is provided on the top of the body 5, and the second slide rail 3 is also provided with a first slide rail 2. The welding part 1 can be controlled to move by the slide rail between the slide rail on the top of the second slide rail 3 and the first slide rail 2, so as to control the placement of the electrodes and welding.

[0039] The structure of the welding part 1 includes a loading box 11 for loading materials. The loading box 11 is installed on the side of the laser 12 and moves synchronously with the laser 12. A feeding rack 15 is arranged at the bottom of the loading box 11, and a sliding material mover 13 is arranged on the surface of the feeding rack 15. The material mover 13 is used to transport the connecting piece stored in the loading box 11. After being transported to the position, the protective rod 14 is driven downward by the first push rod 16 to press the connecting piece onto the electrode surface.

[0040] The structure of the feed rack 15 includes a frame body 150, and a second push rod 151 is provided on the side of the frame body 150. The specific second push rod 151 can be an electric push rod or a pneumatic push rod to drive the bottom cross plate 152 to move up and down. The cross plate 152 is connected to the suction rod 154. When the second push rod 151 retracts, it is attracted to the connecting piece inside the loading box 11. After the attraction, the suction rod 154 is transported to the second material moving rack 135 and the first material moving rack 131 to engage with the first clamping block 353 and the second clamping block 313.

[0041] In order to improve the flexibility of the bottom of the frame 150 and prevent the cross plate 152 from interfering with the installation of the electrodes, causing the electrodes to contact the cross plate 152, the cross plate 152 is located at the top of the first material moving frame 131 and the second material moving frame 135 before transportation. The first material moving frame 131 and the second material moving frame 135 are connected through the rod frame 134 and the limit rod 133. A pulley 153 is provided at the contact position between the cross plate 152 and the limit rod 133. When the cross plate 152 is pressed down, the pulley 153 pushes the limit rod 133 to separate from the rod frame 134. Therefore, when the connecting piece is lowered between the second material moving frame 135 and the first material moving frame 131, it can be positioned and engaged. When it is not engaged, it shrinks to the top of the limit rod 133 to avoid interference. The connecting piece and the loading box 11 are referred to in the manner of FIG. Figure 8 , a card block is provided inside 11 to cooperate with the connecting piece. When the suction rod 154 sucks the middle part of the connecting piece, the connecting piece is bent due to its flexibility and then released and moved out.

[0042] When the connecting piece moves horizontally, the first material moving frame 131 is driven by the belt driven by the first driver 132 and the auxiliary pulley 136 to move horizontally. The first material moving frame 131 is connected to the belt body through the clamping groove 312. The first material moving frame 131 needs to move synchronously. Therefore, the limit rod 133 and the rod frame 134 are installed by a torsion spring. When the cross plate 152 is pressed down, the side where the limit rod 133 is connected to the first material moving frame 131 is disconnected, so that the cross plate 152 can pass. After the cross plate 152 passes, the limit rod 133 is quickly reset, so that the first material moving frame 131 can synchronously drive the second material moving frame 135 to prevent the connecting piece from falling off when it moves.

[0043] When the first material moving rack 131 and the second material moving rack 135 move the connecting piece to the laser 12 area, the laser 12 performs laser cleaning on the surface of the connecting piece to quickly remove the oil stains on the surface. Specifically, the laser 12 is provided with an automatic focusing system, that is, an electric lifting mechanism is provided inside. For example, the laser bracket is driven up and down by a screw rod to achieve coarse adjustment of different focal lengths. Therefore, the connecting piece can be cleaned over a large range to improve efficiency.

[0044] Since the suction rod 154 in this embodiment adopts a common suction cup, it is necessary to control the separation by pulling. For this purpose, the first clamping block 353 and the second clamping block 313 of the device adopt the following method: Figure 7 The structure of the first clamp 353 has a first protrusion 531 and a second protrusion 533 on the surface of the block 532. The second protrusion 533 is thinner than the first protrusion 533 and can be engaged in the gap between the first protrusion 531 and the second protrusion 533 when pulled down. Due to the obstruction of the second protrusion 533, the suction rod 154 is separated from the connecting piece. The use of an ordinary suction cup is mainly due to its simpler structure. The use of a pneumatic suction cup will affect the stability of the device due to the arrangement of the pipeline.

[0045] Furthermore, a first frame 351 of the second material moving rack 135 is provided with a slide groove 354 for sliding cooperation, and a second driver 352 is provided on the side of the first frame 351, and the second driver 352 is used to drive the first clamp 353 to flip. After flipping, since the first protrusion 531 is located at the bottom, the material mover 13 can press down through the protective rod 14 to disengage the connecting piece, and fix the connecting piece on the surface of the electrode, and then the laser 12 is welded and fixed. The structure of installing the connecting piece by transporting the first material moving rack 131 and the second material moving rack 135 and then pressing with the protective rod 14 can make the welding position more accurate.

[0046] Since the first material moving frame 131 is easy to move freely when the limiting rod 133 is separated by top pressure, excessive movement may cause the rod frame 134 welded at the first material moving frame 131 and the limiting rod 133 to be misaligned, resulting in loss of synchronization.

[0047] The first material moving rack 131 is provided with a limit device formed by a clamping plate 314 and an extrusion plate 315 inside the second frame 311 of the first material moving rack 131. Specifically, the clamping plate 314 and the extrusion plate 315 are provided with racks on opposite sides, and are connected by a steering gear 316 in the middle. Slide rods 317 are respectively provided at the connection between the clamping plate 314 and the extrusion plate 315, and the extrusion plate 315 and the clamping plate 314 are separated by a return spring 318 nested in the slide rod 317. When the limit rod 133 and the extrusion plate 315 are pressed, the steering gear 316 drives the clamping plate 314 to retract, and then the clamping plate 314 can be separated from the slide rail surface of the frame 150. At this time, the first material moving rack 131 can move freely following the second material moving rack 135.

[0048] When the squeezing plate 315 is not squeezed, the clamping plate 314 expands outwards, thereby being able to press and limit the slide rail.

[0049] The improved device drives the suction rod 154 on the surface of the cross plate 152 to move up and down through the second push rod 151 to suck out the connecting piece that is flat and engaged inside the loading box 11, thereby reducing the contamination caused by touching the connecting piece by hand. At the same time, the moving frame formed by the first material moving frame 131 and the second material moving frame 135 at the bottom is driven by the belt of the first driver 132 to drive the connecting piece to move horizontally to the installation position. At the same time, the laser 12 is used to remove impurities and reduce surface dirt. In addition, since the first frame 351 is provided with the second driver 352, it can drive the first clamp 353 to flip over, so that both sides of the connecting piece can be cleaned, thereby improving the cleanliness of the surface contacting with the electrode, and making welding more firm.

[0050] By driving the bottom protective rod 14 to press by the first push rod 16, the connecting piece can be installed more quickly and accurately, and secondary pollution can be avoided compared with manual work. The pressing and welding process can be completed in one step, thereby improving production efficiency.

[0051] The above only describes the basic principles and preferred implementations of the present invention. Those skilled in the art may make many changes and improvements based on the above description, and these changes and improvements should fall within the protection scope of the present invention.

[0052] In addition, it should be understood that although the present specification is described according to implementation modes, not every implementation mode contains only one independent technical solution. This description of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment may also be appropriately combined to form other implementation modes that can be understood by those skilled in the art.

Claims

1. A precise welding and packaging equipment for lithium battery production, the structure of which includes: The welding part (1) is connected to a first slide rail (2) and a second slide rail (3), wherein the welding part (1) is installed on the surface of the first slide rail (2) and is movably connected to the first slide rail (2), wherein the welding part (1) moves horizontally on the second slide rail (3) through the first slide rail (2), wherein the second slide rail (3) is fixed on the top of the machine body (5), and a conveyor belt (4) is provided on the top of the machine body (5), characterized in that: The welding part (1) comprises a loading box (11) and a laser (12). The loading box (11) is fixed on the surface of the laser (12). A feeding rack (15) is provided on the side of the loading box (11). A slide rail is provided at the bottom of a frame (150) of the feeding rack (15). A slidable first material moving rack (131) is provided between the frames (150). A first push rod (16) is also installed on the surface of the laser (12). A protective rod (14) is provided on the main shaft of the first push rod (16). The protective rod (14) is driven to move downward by the first push rod (16). A second push rod (151) is installed on the surface of the frame (150), a main shaft of the second push rod (151) is provided with a transverse plate (152), and a suction rod (154) opposite to the loading box (11) is arranged through the transverse plate (152), and the second push rod (151) vertically transports the connecting piece loaded inside the loading box (11) to be engaged between the material movers (13); The first driver (132) of the material mover (13) is installed on the side of the frame (150), and the first material moving frame (131) of the material mover (13) is arranged in the slide rail at the bottom of the frame (150), and the auxiliary pulley (136) of the material mover (13) is also arranged at the end, and a transmission belt is arranged between the first driver (132) and the auxiliary pulley (136), and the transmission belt cooperates with the first material moving frame (131), and the first driver (132) rotates to drive the first material moving frame (131) to move horizontally.

2. A precise welding and packaging equipment for lithium battery production as claimed in claim 1, characterized in that: The material mover (13) further comprises a limiting rod (133), a rod frame (134) and a second material moving frame (135); the first material moving frame (131) and the second material moving frame (135) are relatively mounted on the surface of the slide rail of the frame body (150); the second material moving frame (135) is provided with a rod frame (134) on the opposite surface of the first material moving frame (131); and a limiting rod (133) is provided inside the rod frame (134); a return spring is provided on one side of the limiting rod (133); and a range spring is provided on one side movably connected to the rod frame (134); and when the cross plate (152) is pressed down, one end of the limiting rod (133) can be separated from the rod frame (134).

3. A precise welding and packaging equipment for lithium battery production as claimed in claim 2, characterized in that: A groove is formed on the surface of the transverse plate (152), the groove is opposite to the limiting rod (133), and a pulley (153) is provided in the groove.

4. A precise welding and packaging equipment for lithium battery production as claimed in claim 2, characterized in that: The first material moving rack (131) includes a first frame body (351), a sliding groove (354) sliding with the frame body (150) is provided inside the first frame body (351), a second driver (352) is provided on the side of the first frame body (351), a first clamping block (353) is provided on the opposite side of the second driver (352), the second driver (352) drives the first clamping block (353) to rotate, the first frame body (351) and the rod frame (134) are fixed to form an integrated structure, and a torsion spring is provided on the side of the limiting rod (133) close to the first frame body (351), and cooperates with the rod frame (134) through the torsion spring.

5. The precise welding and packaging equipment for lithium battery production as claimed in claim 2, characterized in that: The first material moving rack (131) comprises a second frame body (311), the second frame body (311) is provided with a clamping groove (312) cooperating with a transmission belt connected to the first driver (132), a second clamping block (313) is provided on the side of the second frame body (311), the second frame body (311) and the second clamping block (313) are movably connected, and a rod frame (134) connected to the second frame body (311) is provided with a clamping plate (314) and a limiting structure formed by an extrusion plate (315) inside.

6. A precise welding and packaging equipment for lithium battery production as claimed in claim 5, characterized in that: The clamping plate (314) and the extrusion plate (315) are movably connected to the groove body through a sliding rod (317), and the sliding rod (317) is reset by a reset spring (318) at the end. The opposing surfaces of the clamping plate (314) and the extrusion plate (315) are provided with racks, and a steering gear (316) is provided between the racks. The limiting rod (133) drives the extrusion plate (315) to drive the steering gear (316) to rotate and drive the clamping plate (314) to retract. The clamping plate (314) is separated from the surface of the slide rail of the frame (150), the limiting rod (133) is separated from the extrusion plate (315), and the clamping plate (314) is pressed against the slide rail of the frame (150).

7. A precise welding and packaging equipment for lithium battery production as claimed in claim 4, characterized in that: The first clamping block (353) comprises a first protrusion (531), a block body (532), and a second protrusion (533); the first protrusion (531) and the second protrusion (533) are located on the surface of the block body (532); and a locking groove is formed between the first protrusion (531) and the second protrusion (533).

8. A precise welding and packaging equipment for lithium battery production as claimed in claim 7, characterized in that: The first convex block (531) is conical, and the height of the first convex block (531) protruding from the surface of the block body (532) is smaller than the height of the second convex block (533) protruding from the surface of the block body (532).

9. The precise welding and packaging equipment for lithium battery production according to claim 5, characterized in that: The second clamping block (313) and the first clamping block (353) have the same structure, and the second clamping block (313) and the first clamping block (353) are made of rubber material.

10. The precise welding and packaging equipment for lithium battery production according to claim 6, characterized in that: A rubber pad is provided on the contact surface between the clamping plate (314) and the slide rail of the frame body (150).

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