An injection port opening and blanking device for a soft-pack lithium battery cell

Abstract

The present invention discloses a device for opening and discharging the liquid injection port of a soft-pack lithium battery cell, belonging to the technical field of soft-pack lithium battery processing equipment, which includes a frame, a battery circular platform and an opening mechanism. The battery circular platform is provided with a plurality of workstations along the circumferential direction, and the opening mechanism is located at any one of the workstations. Both the battery circular platform and the opening mechanism are located on the frame, and a plurality of through holes are opened on the battery circular platform; the opening mechanism includes a fixed column, and a suction cup assembly and an adjustment assembly for adjusting the position of the suction cup assembly on the fixed column are symmetrically arranged on both sides of the battery circular platform along the fixed column respectively, and the suction cup assembly is arranged on both sides of the through hole. By setting the adjustment assembly and the suction cup assembly, the opening process of the soft-pack lithium battery is made more stable, and it can be adjusted to adapt to various models of batteries and various working states, thereby increasing the production efficiency of the battery.

Description

Technical Field

[0001] The present invention relates to the technical field of soft-pack lithium battery processing equipment, and particularly relates to a device for opening and discharging the liquid injection port of a soft-pack lithium battery cell. Background Art

[0002] A soft-pack lithium battery is a liquid lithium-ion battery covered with a polymer outer shell and is packaged with an aluminum-plastic film in terms of structure. The soft-pack lithium battery has the advantages of good safety performance, light weight, large capacity, and small internal resistance, making it widely used and inseparable from people's lives.

[0003] In the existing soft-pack battery manufacturing process, after top-side sealing, the sealed soft-pack lithium battery needs to be placed for the next liquid injection process. The traditional method usually separates the top-side sealing from the side film opening. After the top-side sealing is completed, the battery is transported from the top-side sealer to the liquid injection machine for the liquid injection process. Due to the single and non-adjustable equipment for film tearing in the existing technology, the openings of the batteries cannot be unified, affecting the liquid injection of the batteries. Summary of the Invention

[0004] In order to overcome the defects of the existing technology, the technical problem to be solved by the present invention is to provide a device for opening and discharging the liquid injection port of a soft-pack lithium battery cell. After the top-side sealing film of the soft-pack lithium battery is completed, the processes of inkjet printing, opening the side film, and sending the battery to a material box are integrated through the discharging device, optimizing the steps of manual intervention and increasing the production efficiency of the battery.

[0005] To achieve this purpose, the present invention adopts the following technical solutions:

[0006] The preferred technical solution of the present invention is that it includes a frame, a battery circular platform, and an opening mechanism. The battery circular platform is provided with a plurality of workstations along the circumferential direction. The opening mechanism is located at any one of the workstations. The battery circular platform and the opening mechanism are both located on the frame. A plurality of through holes are provided on the battery circular platform; the opening mechanism includes a fixed column, and a suction cup assembly and an adjustment assembly for adjusting the position of the suction cup assembly on the fixed column are symmetrically arranged on both sides of the battery circular platform along the fixed column, and the suction cup assembly is arranged on both sides of the through hole.

[0007] Preferably, the technical solution of the present invention is that the suction cup assembly is configured with two adjusting blocks, a vacuum suction cup, a suction cup mounting plate and a fixing block. The suction cup mounting plate is fixed on the adjusting assembly, and the fixing block is fixed on the suction cup mounting plate. The suction cup mounting plate and the fixing block are provided with mutually adapted mounting holes. The adjusting block is provided with an adjusting hole, and the fixing block is provided with a rotating hole. A screw passes through the adjusting hole of the adjusting block and the rotating hole of the fixing block, and is then fixed on the fixing block through a bolt. The vacuum suction cup is located on the adjusting block. When the device operates, the vacuum suction cup is adjusted to a suitable position through the adjusting block. After the adjusting assembly adjusts the vacuum suction cup to a suitable position, the vacuum suction cup adsorbs on both sides of the soft-pack lithium battery film that needs to be opened through the through hole, and the battery film is pulled apart.

[0008] Preferably, the technical solution of the present invention is that the adjusting hole is opened at one end far from the vacuum suction cup, and the length of the adjusting hole does not exceed half of the adjusting block. The rotating holes are opened at both ends of the fixing block and are symmetrically arranged along the center line of the fixing block. The diameter of the rotating hole is smaller than the width of the adjusting hole.

[0009] Preferably, the technical solution of the present invention is that the suction cup mounting plate is arranged radially along the circular platform of the battery. The fixing block is movably connected to the suction cup mounting plate through the mounting hole and is located at the center position of the suction cup mounting plate. The adjusting block and the fixing block are movably installed through the adjusting hole and the rotating hole, and the adjusting block is located at both ends of the fixing block.

[0010] Preferably, the technical solution of the present invention further includes a blanking and grasping mechanism, which is located at the next working station of the opening mechanism. The blanking and grasping mechanism is configured with a guide rail rodless cylinder, and the guide rail rodless cylinder is configured with a plurality of rotary cylinders, a suction cup plate and a slide cylinder. The suction cup plate is configured with at least one vacuum suction cup. The slide cylinder is installed on the guide rail rodless cylinder, and the slide cylinder is connected to the rotary cylinder. The suction cup plate is located on the rotary cylinder. The suction cup plate is provided with a plurality of suction cup mounting holes for installing vacuum suction cups.

[0011] Preferably, the technical solution of the present invention further includes a fixing plate, a slide rail and a slider. The guide rail rodless cylinder is fixed on the fixing plate, and the fixing plate slides on the slide rail through the slider.

[0012] Preferably, the technical solution of the present invention is that the blanking and grasping mechanism is further configured with a conveying mechanism, and the conveying mechanism includes a conveyor belt and a material box. The conveyor belt is located below the fixing plate.

[0013] Preferably, in the technical solution of the present invention, a number of battery platforms for placing batteries are arranged on the circular battery platform, and magnets for positioning the battery platforms are arranged inside the battery platforms.

[0014] Preferably, the present invention further includes a coding mechanism, which is located at the previous station of the opening mechanism; the coding mechanism includes a coding fixing component and a coding head, and the coding head is fixed on the coding fixing component.

[0015] Preferably, the present invention further includes a touch screen for controlling the equipment, and the touch screen is fixed on the frame.

[0016] The beneficial effects of the present invention are:

[0017] The technical problem to be solved by the present invention is to provide a device for opening and discharging the liquid injection port of a soft-pack lithium battery cell, including a frame, a circular battery platform, and an opening mechanism. The circular battery platform is provided with a number of stations along the circumferential direction, and the opening mechanism is located at any station. The circular battery platform and the opening mechanism are both located on the frame. The opening mechanism is located outside the circular battery platform, and a number of through holes are opened on the circular battery platform; the opening mechanism includes a fixed column, and a suction cup assembly and an adjustment assembly for adjusting the position of the suction cup assembly on the fixed column are symmetrically arranged on both sides of the circular battery platform along the fixed column, and the suction cup assembly is arranged on both sides of the through hole. After the soft-pack lithium battery is top-sealed, sending the side-opening film and the material-grabbing and discharging mechanism to the material frame process in one step facilitates the next process of the soft-pack lithium battery. By setting the adjustment assembly and the suction cup assembly, the opening process of the soft-pack lithium battery is more stable and can be adjusted to adapt to various types of batteries and various working states. Description of the Drawings

[0018] The drawings incorporated into the specification and constituting a part of the specification illustrate the embodiments of the present invention and are used together with the description to explain the principles of the present invention. In these drawings, similar reference numerals are used to represent similar elements. The following drawings are some embodiments of the present invention, not all embodiments. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative efforts.

[0019] Figure 1 It is a schematic diagram of the overall structure of the device for opening and discharging the liquid injection port of a soft-pack lithium battery cell provided in the specific embodiment of the present invention;

[0020] Figure 2 It is a schematic diagram of the opening mechanism of the device for opening and discharging the liquid injection port of a soft-pack lithium battery cell provided in the specific embodiment of the present invention;

[0021] Figure 3 It is a schematic diagram of the blanking grasping mechanism of the injection port opening blanking device for the soft-pack lithium battery cell provided in the specific embodiment of the present invention;

[0022] Figure 4 It is a schematic diagram of the battery circular platform structure of the injection port opening blanking device for the soft-pack lithium battery cell provided in the specific embodiment of the present invention;

[0023] Figure 5 It is a schematic diagram of the opening structure of the injection port opening blanking device for the soft-pack lithium battery cell provided in the specific embodiment of the present invention;

[0024] In the figure:

[0025] 1. Frame; 2. Battery circular platform; 21. Through hole; 22. Battery table; 221. Magnet; 3. Opening mechanism; 31. Fixed column; 32. Adjusting block; 321. Adjusting hole; 33. Vacuum suction cup; 34. Suction cup mounting plate; 35. Fixed block; 351. Rotating hole; 36. Mounting hole; 4. Blanking grasping mechanism; 41. Rodless cylinder of guide rail; 411. Rotary cylinder; 412. Suction cup plate; 413. Slide cylinder; 414. Suction cup mounting hole; 42. Conveying mechanism; 421. Conveyor belt; 422. Material box; 5. Fixed plate; 6. Slide rail; 7. Slide block; 8. Inkjet coding mechanism; 81. Inkjet coding fixing component; 82. Inkjet nozzle; 9. Touch screen. Specific embodiment

[0026] To make the objectives, 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 with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are some, but not all, of the embodiments of the present invention. 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. It should be noted that, without conflict, the embodiments in the present application and the features in the embodiments may be combined with each other arbitrarily.

[0027] The technical solutions of the present invention will be further described below with reference to the accompanying drawings and through specific embodiments.

[0028] Such as Figures 1-5As shown in the figure, a device for opening and discharging the injection port of a soft-pack lithium battery cell provided by the present invention includes a frame 1, a battery circular platform 2, and an opening mechanism 3. The battery circular platform 2 is provided with a number of workstations along the circumferential direction. The opening mechanism 3 is located at any one of the workstations. Both the battery circular platform 2 and the opening mechanism 3 are located on the frame 1. A number of through holes 21 are provided on the battery circular platform 2. The opening mechanism 3 includes a fixed column 31. Suction cup assemblies and an adjustment assembly for adjusting the position of the suction cup assemblies on the fixed column 31 are symmetrically arranged on both sides of the battery circular platform 2 along the fixed column 31. The suction cup assemblies are arranged on both sides of the through holes 21. By providing the adjustment assembly and the suction cup assemblies, the opening process of the soft-pack lithium battery is made more stable and adjustable to adapt to various types of batteries and various working states.

[0029] Preferably, the suction cup assembly is configured with two adjustment blocks 32, vacuum suction cups 33, a suction cup mounting plate 34, and a fixed block 35. The suction cup mounting plate 34 is fixed on the adjustment assembly, and the fixed block 35 is fixed on the suction cup mounting plate 34. Mounting holes adapted to each other are provided on the suction cup mounting plate 34 and the fixed block 35. An adjustment hole 321 is provided on the adjustment block 32, and a rotation hole 351 is provided on the fixed block 35. A screw passes through the adjustment hole 321 of the adjustment block 32 and the rotation hole 351 of the fixed block 35, and is then fixed to the fixed block 35 by a bolt. The vacuum suction cup 33 is located on the adjustment block 32. When the device is running, the vacuum suction cup 33 is adjusted to a suitable position through the adjustment block 32. After the adjustment assembly adjusts the vacuum suction cup 33 to a suitable position, the vacuum suction cup 33 adsorbs on both sides of the soft-pack lithium battery film to be opened through the through holes 21, and the battery film is pulled open.

[0030] Preferably, the adjustment hole 321 is provided at one end away from the vacuum suction cup 33, and the length of the adjustment hole 321 does not exceed half of the adjustment block 32. The rotation holes 351 are provided at both ends of the fixed block 35 and are symmetrically arranged along the midline of the fixed block 35. The diameter of the rotation hole 351 is smaller than the width of the adjustment hole 321, so that the adjustment block 32 can not only rotate on the fixed block 35 to adjust the angle, but also can be adjusted in length through the adjustment hole 321. And the diameter of the rotation hole 351 is smaller than the width of the adjustment hole 321, making the connection between the fixed block 35 and the adjustment block 32 more stable.

[0031] Preferably, the suction cup mounting plate 34 is arranged radially along the battery circular platform 2. The fixing block 35 is movably connected to the suction cup mounting plate 34 through the mounting hole and is located at the center position of the suction cup mounting plate 34. The adjusting block 32 and the fixing block 35 are movably installed through the adjusting hole 321 and the rotating hole 351, and the adjusting block 32 is located at both ends of the fixing block 35. By such an arrangement, the adjustment range between the suction cup mounting plate 34, the fixing block 35, the adjusting block 32 and the fixing block 35 is larger, and it can be avoided that due to the circular setting of the battery circular platform 2, the position of the battery is not at a right angle to the opening mechanism 3, which affects the battery opening.

[0032] Preferably, it further includes a blanking grasping mechanism 4, and the blanking grasping mechanism 4 is located at the next working station of the opening mechanism 3; the blanking grasping mechanism 4 is configured with a guide rail rodless cylinder 41, and several rotary cylinders 411, a suction cup plate 412 and a slide table cylinder 413 are configured on the guide rail rodless cylinder 41. At least one vacuum suction cup 33 is configured on the suction cup plate 412. The slide table cylinder 413 is installed on the guide rail rodless cylinder 41, the slide table cylinder 413 is connected to the rotary cylinder 411, and the suction cup plate 412 is located on the rotary cylinder 411; several suction cup mounting holes 414 for installing the vacuum suction cup 33 are opened on the suction cup plate 412. Through the cooperation between the cylinders, the guide rail rodless cylinder 41 adjusts the positions between the slide table cylinders 413 located on the guide rail rodless cylinder 41, and the rotary cylinder 411 adjusts the angle of the suction cup plate 412, so that the vacuum suction cup 33 can freely adjust its position according to the change of the battery, facilitating the blanking grasping mechanism 4 to grasp the battery.

[0033] Preferably, it further includes a fixing plate 5, a slide rail 6 and a slider 7. The guide rail rodless cylinder 41 is fixed on the fixing plate 5, and the fixing plate 5 slides on the slide rail 6 through the slider 7, facilitating the movement of the blanking grasping mechanism 4 to place the grasped battery at the position where it needs to be placed.

[0034] Preferably, the blanking grasping mechanism 4 is further configured with a conveying mechanism 42. The conveying mechanism 42 includes a conveyor belt 421 and a material box 422. The conveyor belt 421 is located below the fixing plate 5, facilitating the conveying of the battery grasped by the blanking grasping mechanism 4.

[0035] Preferably, several battery platforms 22 for placing batteries are configured on the battery circular platform 2, and magnets 221 for positioning the battery platforms 22 are configured inside the battery platforms 22, so that battery platforms 22 of various models can be firmly fixed on the battery circular platform 2.

[0036] Preferably, it further includes a coding mechanism 8, and the coding mechanism 8 is located at the previous working station of the opening mechanism 3; the coding mechanism 8 includes a coding fixing component 81 and a coding head 82, and the coding head 82 is fixed on the coding fixing component 81.

[0037] Preferably, it further includes a touch screen 9 for controlling the device, and the touch screen 9 is fixed on the frame 1.

[0038] When using this device, according to the battery model, replace the battery platform 22 on the battery circular platform 2 to make it match the battery model that needs to open the side film, and limit and position the battery platform 22 through the magnet 221 to prevent the battery platform 22 from running off track and affecting the operation of the device. Place the soft-pack lithium battery that has gone through the previous process into the battery platform 22 on the battery circular platform 2. From the above, the workstations arranged along the outside of the battery circular platform 2 are respectively the inkjet printing mechanism 8, the opening mechanism 3, and the blanking grasping mechanism 4. The blanking grasping mechanism 4 grasps the battery onto the conveyor 42. The motor drives the rotation of the battery circular platform 2, so that the battery enters the inkjet printing mechanism 8. The inkjet head 82 on the inkjet printing fixing component 81 jets codes such as the model on the battery located on the battery platform 22. After completion, the motor drives the battery circular platform 2 to continue rotating and enters the position of the opening mechanism 3. In the early stage, adjust the position of the vacuum suction cup 33 on the adjusting block 32 and the fixing block 35 through bolts and screws, and then adjust the position of the cylinder (general model: TCL16X30S) located on the fixed column 31 through the adjustment component. The vacuum suction cup 33 can fit the film covering of the battery, so that the vacuum suction cup 33 can tear open a small part of the opening and then release it. The battery circular platform 2 continues to rotate to the blanking grasping mechanism 4. Similarly, in the early stage, according to the battery situation to be grasped, adjust the position of the rotary cylinder 411 through the guide rail rodless cylinder 41, and then install the vacuum suction cup 33 in the suction cup mounting hole 414 on the suction cup plate 412, which is convenient for the blanking grasping mechanism 4 to grasp the battery onto the conveyor belt 421 on the conveyor 42. The blanking grasping mechanism 4 grasps the position of the battery body, rather than the opening position of the opening mechanism 3, and then moves it into the material box 422, preparing to send the soft-pack lithium battery into the next process. At the same time, through the fixing plate 5, the slide rail 6 and the slider 7 arranged on the guide rail rodless cylinder 41, the guide rail rodless cylinder 41 can drive and move a certain position above the conveyor belt 421, which is convenient for adjusting the position of placing the battery. During the operation process, the operation of the device can be adjusted through the touch screen 9.

[0039] It should be noted that in this article, relational terms such as first and second are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variant thereof are intended to cover non-exclusive inclusion, so that an article or device including a series of elements not only includes those elements, but also includes other elements not explicitly listed, or also includes elements inherent to this article or device. Without more restrictions, the elements defined by the statement "include..." do not exclude the existence of additional identical elements in the article or device including the elements.

[0040] The above embodiments are only used to illustrate the technical solutions of the present invention rather than to limit it. The present invention has only been described in detail with reference to the preferred embodiments. Those of ordinary skill in the art should understand that the technical solutions of the present invention can be modified or equivalently replaced without departing from the spirit and scope of the technical solutions of the present invention, and all should be covered within the scope of the claims of the present invention.

Claims

1. A device for opening and discharging liquid from the injection port of a soft-pack lithium battery cell, characterized in that: It includes a frame (1), a battery circular platform (2), and an opening mechanism (3). The battery circular platform (2) is provided with a number of workstations along the circumferential direction. The opening mechanism (3) is located at any one of the workstations. The battery circular platform (2) and the opening mechanism (3) are both located on the frame (1). A number of through holes (21) are provided on the battery circular platform (2); The opening mechanism (3) includes a fixed column (31). On both sides of the battery circular platform (2), a suction cup assembly and an adjustment assembly for adjusting the position of the suction cup assembly on the fixed column (31) are symmetrically arranged respectively along the fixed column (31), and the suction cup assembly is arranged on both sides of the through hole (21); The suction cup assembly is configured with two adjustment blocks (32), a vacuum suction cup (33), a suction cup mounting plate (34), and a fixed block (35). The suction cup mounting plate (34) is fixed on the adjustment assembly, and the fixed block (35) is fixed on the suction cup mounting plate (34); The suction cup mounting plate (34) and the fixed block (35) are provided with mutually adapted mounting holes (36). The adjustment block (32) is provided with an adjustment hole (321). The fixed block (35) is provided with a rotation hole (351). A screw passes through the adjustment hole (321) of the adjustment block (32) and the rotation hole (351) of the fixed block (35), and is then fixed to the fixed block (35) by a bolt. The vacuum suction cup (33) is located on the adjustment block (32); When the equipment operates, the vacuum suction cup (33) is adjusted to a suitable position through the adjustment block (32). After the adjustment assembly adjusts the vacuum suction cup (33) to a suitable position, the vacuum suction cup (33) adsorbs on both sides of the soft-pack lithium battery film to be opened through the through hole (21), and the battery film is pulled apart; The adjustment hole (321) is opened at one end far from the vacuum suction cup (33), and the length of the adjustment hole (321) does not exceed half of the adjustment block (32). The rotation hole (351) is opened at both ends of the fixed block (35), and is symmetrically arranged along the midline of the fixed block (35). The diameter of the rotation hole (351) is smaller than the width of the adjustment hole (321).

2. The liquid injection port opening and blanking device for the soft-pack lithium battery cell according to claim 1, wherein: The suction cup mounting plate (34) is arranged radially along the battery circular platform (2). The fixed block (35) is movably connected to the suction cup mounting plate (34) through the mounting hole (36), and is located at the central position of the suction cup mounting plate (34). The adjustment block (32) and the fixed block (35) are movably installed through the adjustment hole (321) and the rotation hole (351), and the adjustment block (32) is located at both ends of the fixed block (35).

3. The liquid injection port opening and blanking device for the soft-pack lithium battery cell according to claim 1, wherein: It further includes a blanking grasping mechanism (4). The blanking grasping mechanism (4) is located at the next workstation after the opening mechanism (3); The blanking and gripping mechanism (4) is configured with a guide rodless cylinder (41). A number of rotary cylinders (411), a suction cup plate (412), and a slide cylinder (413) are arranged on the guide rodless cylinder (41). At least one vacuum suction cup (33) is arranged on the suction cup plate (412). The slide cylinder (413) is installed on the guide rodless cylinder (41). The slide cylinder (413) is connected to the rotary cylinder (411). The suction cup plate (412) is located on the rotary cylinder (411). A number of suction cup mounting holes (414) for mounting the vacuum suction cups (33) are formed in the suction cup plate (412).

4. The liquid injection port opening and blanking device for the soft-pack lithium battery cell according to claim 3, wherein: It further includes a fixing plate (5), a slide rail (6), and a slider (7). The guide rodless cylinder (41) is fixed on the fixing plate (5). The fixing plate (5) slides on the slide rail (6) through the slider (7).

5. The liquid injection port opening and blanking device for the soft-pack lithium battery cell according to claim 4, wherein: The blanking and gripping mechanism (4) is further configured with a conveying mechanism (42). The conveying mechanism (42) includes a conveyor belt (421) and a material box (422). The conveyor belt (421) is located below the fixing plate (5).

6. The liquid injection port opening and blanking device for the soft-pack lithium battery cell according to claim 1, wherein: A number of battery platforms (22) for placing batteries are arranged on the battery circular platform (2). A magnet (221) for positioning the battery platform (22) is arranged inside the battery platform (22).

7. The injection port opening and blanking device for the soft-pack lithium battery cell according to claim 1, wherein: It further includes a coding mechanism (8). The coding mechanism (8) is located at the previous station of the opening mechanism (3). The coding mechanism (8) includes a coding fixing component (81) and a coding head (82). The coding head (82) is fixed on the coding fixing component (81).

8. The liquid injection port opening and blanking device for the soft-pack lithium battery cell according to claim 1, wherein: It further includes a touch screen (9) for controlling the equipment. The touch screen (9) is fixed on the frame (1).

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