Magnetic suspension type metal lithium sheet preparation equipment

Abstract

The utility model discloses magnetic suspension type metal lithium sheet preparation equipment which comprises a metal lithium unwinding and cutting device, a magnetic suspension conveying line, a tab primary crimping mechanism, a tab rubberizing mechanism, a tab secondary crimping mechanism, a tab rubberizing detection mechanism and a lamination table, the metal lithium unwinding and cutting device is used for cutting rolled metal lithium sheets into sheet-shaped metal lithium sheets, the magnetic suspension conveying line is provided with a feeding position and a rotor backflow position, the magnetic suspension conveying line comprises a plurality of magnetic suspension rotors, the magnetic suspension rotors receive the metal lithium sheets cut by the metal lithium unwinding and cutting device at the feeding position, and the magnetic suspension rotors return to the feeding position. And the magnetic suspension rotor is driven to move to the tab primary crimping mechanism, the tab rubberizing mechanism, the tab secondary crimping mechanism, the tab rubberizing detection mechanism ring and the lamination table in sequence, and the magnetic suspension rotor flows back to the feeding position from the rotor backflow position. According to the lithium metal sheet production equipment, the pole pieces are carried in a magnetic suspension conveying mode, so that the number of times of handover of the lithium metal sheets is reduced, and the lithium metal sheets are prevented from being subjected to secondary pollution.

Description

Technical Field

[0001] This utility model relates to the field of lithium battery manufacturing technology, specifically to a magnetically levitated lithium metal sheet forming device. Background Technology

[0002] The current market demand for high-energy-density battery cells and cell safety is growing stronger. As a type of solid-state battery, lithium metal has the advantages of high energy density and good safety. Unlike conventional electrodes, lithium metal does not have strong rigidity and is not easily deformed during the manufacturing and handling process. Therefore, how to reduce the handling of lithium metal during the manufacturing process has become a challenge. In addition, how to improve the manufacturing efficiency of lithium metal within a limited space is a problem that needs to be solved.

[0003] In existing technologies, to address the issue of lithium metal being easily deformed during handling, vacuum chucks are used to sequentially transport the electrode sheets from a vacuum belt to the first pressing of the tabs, the application of adhesive to the tabs, the second pressing of the tabs, the detection point for the adhesive application of the tabs, and finally the stacking vacuum belt. However, in this handling method, the lithium metal sheets need to be transferred and handed over multiple times. Since lithium metal sheets are relatively soft, they may wrinkle after multiple transfers and handovers. Furthermore, repeated transport on the vacuum belt will cause dust to adhere to the vacuum belt, thus contaminating the new lithium sheets. In addition, lithium particles adhering to the belt can also scratch the lithium metal sheets. Utility Model Content

[0004] To overcome the shortcomings of existing technologies, this utility model provides a magnetic levitation lithium metal sheet making equipment, which uses a magnetic levitation conveying method to realize the handling of electrode sheets, reduce the number of lithium metal sheet handovers, and avoid secondary contamination of lithium metal sheets.

[0005] The technical solution adopted by this utility model to solve its technical problem is:

[0006] A magnetically levitated lithium metal sheet manufacturing equipment includes a lithium metal unwinding and cutting device, a magnetically levitated conveyor line, a primary electrode pressing mechanism, an electrode adhesive application mechanism, a secondary electrode pressing mechanism, an electrode adhesive application detection mechanism, and a stacking table. The lithium metal unwinding and cutting device is used to cut rolled lithium metal sheets into sheet-shaped lithium metal sheets. The magnetically levitated conveyor line has a loading position and a mover return position. The magnetically levitated conveyor line includes multiple magnetically levitated movers. The magnetically levitated movers receive the lithium metal sheets cut by the lithium metal unwinding and cutting device at the loading position and drive the lithium metal sheets to the primary electrode pressing mechanism, the electrode adhesive application mechanism, the secondary electrode pressing mechanism, the electrode adhesive application detection mechanism, and the stacking table in sequence. The magnetically levitated movers return from the mover return position to the loading position. The stacking table is used to stack the lithium metal sheets into battery cells.

[0007] As a further improvement to the above technical solution, the primary electrode pressing mechanism, the electrode adhesive application mechanism, the secondary electrode pressing mechanism, and the electrode adhesive application detection mechanism form a set of lithium metal sheet production lines. There are two sets of lithium metal sheet production lines, and there are two stacking tables. The magnetic levitation conveyor line includes a magnetic levitation left conveyor line, a magnetic levitation right conveyor line, and a magnetic levitation main conveyor line. The magnetic levitation left conveyor line and the magnetic levitation right conveyor line are respectively used to convey lithium metal sheets to the two sets of lithium metal sheet production lines. The magnetic levitation main conveyor line is used to convey the lithium metal sheets output from the two sets of lithium metal sheet production lines to the two stacking tables.

[0008] As a further improvement to the above technical solution, each of the aforementioned lithium metal sheet production lines has two tabs that are pressed together once.

[0009] As a further improvement to the above technical solution, the lithium metal unwinding and cutting device has at least three parts, and the lithium metal sheets cut by the at least three lithium metal unwinding and cutting devices converge to the loading position of the magnetic levitation conveyor line, and are respectively conveyed to the left magnetic levitation conveyor line and the right magnetic levitation conveyor line.

[0010] As a further improvement to the above technical solution, the electrode primary crimping mechanism includes an electrode unwinding and cutting transfer assembly, a crimping head, and a first crimping head drive. The electrode unwinding and cutting transfer assembly is used to cut the electrode and place it on the lithium metal sheet. The crimping head is provided with protrusions. The first crimping head drive is used to drive the crimping head to move and crimp the electrode onto the lithium metal sheet.

[0011] As a further improvement to the above technical solution, the first pressure head drive component includes a cylinder.

[0012] As a further improvement to the above technical solution, the electrode tab adhesive application mechanism includes a tape unwinding and cutting component and an adhesive application component. The tape unwinding and cutting component is used to cut the tape, and the adhesive application component is used to transfer the cut tape to the electrode tab pressing position of the lithium metal sheet for flat adhesive application.

[0013] As a further improvement to the above technical solution, the electrode primary pressing mechanism includes a flat pressing head and a second pressing head driving component. The second pressing head driving component is used to drive the flat pressing head to flatten the electrode pressing position of the lithium metal sheet.

[0014] As a further improvement to the above technical solution, the second pressure head drive component includes an electric cylinder.

[0015] As a further improvement to the above technical solution, the magnetic levitation lithium metal sheet making equipment also includes an NG rejection mechanism, which is used to reject lithium metal sheets that fail the detection of the tab adhesive detection mechanism.

[0016] The beneficial effects of this utility model are: using a magnetic levitation conveyor line to transport lithium metal sheets reduces the number of times lithium metal sheets are handled and transferred during the sheet making process, avoids wrinkles in the lithium metal sheets, and also avoids the situation where new lithium sheets are contaminated by dust or scratched by lithium particles. Attached Figure Description

[0017] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0018] Figure 1 This is a schematic diagram of the layout of the magnetic levitation lithium metal sheet production equipment according to an embodiment of the present invention. Figure 1 ;

[0019] Figure 2 This is a schematic diagram of the layout of the magnetic levitation lithium metal sheet production equipment according to an embodiment of the present invention. Figure 2 ;

[0020] Figure 3 This is a partial structural schematic diagram of the magnetic levitation lithium metal sheet forming equipment according to an embodiment of this utility model;

[0021] Figure 4 This is a schematic diagram of the primary electrode pressing mechanism, the electrode adhesive application mechanism, and the secondary electrode pressing mechanism in the magnetic levitation lithium metal sheet forming equipment of this utility model embodiment.

[0022] Reference numerals: 1. Lithium metal unwinding and cutting device; 2. Magnetic levitation conveyor line; 20. Magnetic levitation mover; 21. Loading position; 22. Mover return position; 23. Rotation docking position; 201. Magnetic levitation left conveyor line; 202. Magnetic levitation right conveyor line; 203. Magnetic levitation main conveyor line; 204. Lower layer return line; 205. Upper and lower layer loading positions; 3. First electrode pressing mechanism; 31. Electrode unwinding and cutting transfer assembly; 32. First pressing head drive; 33. Pressing head; 4. Electrode adhesive application mechanism; 41. Adhesive tape unwinding and cutting assembly; 42. Adhesive application assembly; 5. Second electrode pressing mechanism; 51. Second pressing head drive; 52. Flat pressing head; 6. Electrode adhesive application detection mechanism; 7. Stacking table. Detailed Implementation

[0023] The following will clearly and completely describe the concept, specific structure, and technical effects of this utility model in conjunction with embodiments and accompanying drawings, so as to fully understand the purpose, features, and effects of this utility model. Obviously, the described embodiments are only a part of the embodiments of this utility model, not all of them. Other embodiments obtained by those skilled in the art based on the embodiments of this utility model without creative effort are all within the scope of protection of this utility model. Furthermore, all connections / linkages involved in the patent do not simply refer to direct connection of components, but rather to the ability to form a better connection structure by adding or reducing connecting accessories according to specific implementation conditions. For example, fixed connections / installations can use accessories such as screws and bolts, or can be directly connected by welding, bonding, etc. The various technical features in this utility model can be combined interactively without contradicting each other.

[0024] Reference Figure 1 , Figure 2 The present invention provides a magnetic levitation lithium metal sheet production equipment, including a lithium metal unwinding and cutting device 1, a magnetic levitation conveyor line 2, a primary electrode pressing mechanism 3, an electrode adhesive application mechanism 4, a secondary electrode pressing mechanism 5, an electrode adhesive application detection mechanism 6, an NG rejection mechanism, and a stacking table 7. The magnetic levitation conveyor line 2 has a loading position 21 and a mover return position 22, and the magnetic levitation conveyor line 2 includes a plurality of magnetic levitation movers 20.

[0025] During the lithium metal sheet manufacturing process, the lithium metal unwinding and cutting device 1 cuts the rolled lithium metal sheet into sheet lithium metal sheets. The magnetic levitation actuator 20 receives the lithium metal sheet cut by the lithium metal unwinding and cutting device 1 at the loading position 21 and drives the lithium metal sheet to move sequentially to the tab primary pressing mechanism 3, the tab adhesive application mechanism 4, the tab secondary pressing mechanism 5, the tab adhesive application detection mechanism 6, and the stacking table 7. Specifically, the primary electrode pressing mechanism 3 has an electrode unwinding, cutting, and transfer function, and presses the cut electrode onto the lithium metal sheet. The electrode adhesive applicator 4 has an adhesive tape unwinding, cutting, and transfer function, and transfers the cut adhesive tape to the electrode pressing position of the lithium metal sheet for flat adhesive application. The applied flat adhesive tape has a protective function. The secondary electrode pressing mechanism 5 flattens the junction between the primary pressed electrode and the lithium metal sheet. The electrode adhesive applicator inspection mechanism 6 performs quality inspection on the applied adhesive tape, checking whether the tape is applied properly and whether it is folded. The NG rejection mechanism rejects unqualified lithium metal sheets. The stacking table 7 stacks the lithium metal sheets into battery cells. The magnetic levitation mover 20 that takes away the lithium metal sheet returns to the loading position 21 at the mover return position 22, realizing the circulation of the magnetic levitation mover 20.

[0026] This invention employs a magnetic levitation conveyor line 2 to reduce the handling process of lithium metal using robotic arms during the sheet preparation process, thereby improving the sheet preparation quality and efficiency of lithium metal.

[0027] In the above embodiments, referring to Figure 3 The magnetic levitation conveyor line 2 includes a lower return line 204. The entire magnetic levitation conveyor line 2 has two mover return positions 22 and one upper and lower layer loading positions 205. The two mover return positions 22 are respectively set to two stacking tables 7, and the upper and lower layer loading positions 205 are set to loading positions 21. The magnetic levitation mover 20 moves from the two mover return positions 22 to the lower return line 204, so that the upper and lower layer loading positions 205 float and move to the loading position 21 to receive the cut lithium metal sheets again.

[0028] Furthermore, it can be understood that the magnetic levitation actuator 20 has the function of translating up, down, left, right, forward and backward (the principle is to change the magnitude and direction of the current in the coil by changing the magnitude of the magnetic force; the specific structure is existing technology and will not be described here). The magnetic levitation actuator 20 is provided with a vacuum adsorption plate, which is used to adsorb and fix the lithium metal sheet.

[0029] Reference Figure 1 In this embodiment, to improve production efficiency, the primary electrode pressing mechanism 3, the electrode adhesive application mechanism 4, the secondary electrode pressing mechanism 5, and the electrode adhesive application detection mechanism 6 form a set of lithium metal sheet production lines. There are two sets of lithium metal sheet production lines, and two stacking tables 7. Correspondingly, the magnetic levitation conveyor line 2 includes a magnetic levitation left conveyor line 201, a magnetic levitation right conveyor line 202, and a magnetic levitation main conveyor line 203. The magnetic levitation left conveyor line 201 and the magnetic levitation right conveyor line 202 are respectively used to convey lithium metal sheets to the two sets of lithium metal sheet production lines. The magnetic levitation main conveyor line 203 is used to convey the lithium metal sheets output from the two sets of lithium metal sheet production lines to the two stacking tables 7. This allows for the simultaneous processing of two sets of lithium metal sheets, improving the lithium metal sheet production efficiency.

[0030] Furthermore, each of the lithium metal sheet production lines has two tab primary pressing mechanisms 3. Since the processing time of the tab primary pressing mechanism 3 is longer than that of other stations, equipping two tab primary pressing mechanisms 3 can ensure that the efficiency of other stations is not affected when the pressing efficiency of the tab primary pressing mechanism 3 is low. After the tab primary pressing, one of the two lithium metal sheets reaches the tab adhesive application mechanism 4, and the other waits in front of the tab adhesive application mechanism 4.

[0031] Reference Figure 2 In some embodiments, there are at least three lithium metal unwinding and cutting devices 1. The lithium metal sheets cut by the three lithium metal unwinding and cutting devices 1 flow to the loading position 21 of the magnetic levitation conveyor line 2 and are respectively conveyed to the magnetic levitation left conveyor line 201 and the magnetic levitation right conveyor line 202. Increasing the number of lithium metal unwinding and cutting devices 1 can better improve production efficiency.

[0032] In the above embodiment, the magnetic levitation conveyor line 2 also has multiple rotating docking positions 23. Since the rotating docking positions 23 change the direction of the magnetic levitation mover 20, the magnetic levitation mover 20 can be easily transported on the magnetic levitation left conveyor line 201, the magnetic levitation right conveyor line 202 and the magnetic levitation main conveyor line 203 after rotating.

[0033] Reference Figure 4 In this embodiment, the electrode primary crimping mechanism 3 includes an electrode unwinding and cutting transfer assembly 31, a crimping head 33, and a first crimping head drive 32. The electrode unwinding and cutting transfer assembly 31 can cut the rolled electrode into sheet electrode and place the sheet electrode on the lithium metal sheet. The crimping head 33 is provided with protrusions. The first crimping head drive 32 drives the crimping head 33 to move and crimp the electrode onto the lithium metal sheet.

[0034] The tab bonding mechanism 4 includes a tape unwinding and cutting component 41 and a bonding component 42. The tape unwinding and cutting component 41 is used to cut the tape, and the bonding component 42 includes a vacuum suction cup. The vacuum suction cup is used to transfer the cut tape to the tab pressing position of the lithium metal sheet for flat bonding, so as to protect the bonding area between the lithium metal sheet and the tab.

[0035] The electrode primary crimping mechanism 3 includes a flat crimping head 52 and a second crimping head drive member 51. The second crimping head drive member 51 drives the flat crimping head 52 to flatten the electrode crimping position of the lithium metal sheet.

[0036] In the above embodiments, the first pressure head drive member 32 and the second pressure head drive member 51 can be linearly driven by cylinders, electric cylinders, etc.

[0037] In this embodiment, the tab adhesive detection mechanism 6 includes a camera and a light source to perform quality detection on the adhesive tape applied by the adhesive assembly 42 at the junction of the lithium metal sheet and the tab, and to detect whether the tape is applied properly and whether it is folded.

[0038] The above is a detailed description of the preferred embodiments of the present utility model. However, the present utility model is not limited to the described embodiments. Those skilled in the art can make various equivalent modifications or substitutions without departing from the spirit of the present utility model. All such equivalent modifications or substitutions are included within the scope defined by the claims of this application.

Claims

1. A magnetically levitated lithium metal sheet forming device, characterized in that: The device includes a lithium metal unwinding and cutting device, a magnetic levitation conveyor line, a primary electrode pressing mechanism, an electrode adhesive application mechanism, a secondary electrode pressing mechanism, an electrode adhesive application detection mechanism, and a stacking table. The lithium metal unwinding and cutting device is used to cut rolled lithium metal sheets into sheet-shaped lithium metal sheets. The magnetic levitation conveyor line has a loading position and a mover return position. The magnetic levitation conveyor line includes multiple magnetic levitation movers. The magnetic levitation movers are used to receive the lithium metal sheets cut by the lithium metal unwinding and cutting device at the loading position and drive the lithium metal sheets to the primary electrode pressing mechanism, the electrode adhesive application mechanism, the secondary electrode pressing mechanism, the electrode adhesive application detection mechanism, and the stacking table in sequence. The magnetic levitation movers return from the mover return position to the loading position. The stacking table is used to stack the lithium metal sheets into battery cells.

2. The magnetic levitation lithium metal sheet preparation equipment according to claim 1, characterized in that: The primary electrode pressing mechanism, electrode adhesive application mechanism, secondary electrode pressing mechanism, and electrode adhesive application detection mechanism form a set of lithium metal sheet production lines. There are two sets of lithium metal sheet production lines. There are two stacking tables. The magnetic levitation conveyor line includes a left magnetic levitation conveyor line, a right magnetic levitation conveyor line, and a main magnetic levitation conveyor line. The left and right magnetic levitation conveyor lines are used to convey lithium metal sheets to the two sets of lithium metal sheet production lines, respectively. The main magnetic levitation conveyor line is used to convey the lithium metal sheets output from the two sets of lithium metal sheet production lines to the two stacking tables.

3. The magnetic levitation lithium metal sheet preparation equipment according to claim 2, characterized in that: Each of the aforementioned lithium metal sheet production lines has two tabs that are crimped together once.

4. The magnetic levitation lithium metal sheet preparation equipment according to claim 3, characterized in that: The lithium metal unwinding and cutting device has at least three units. The lithium metal sheets cut by the at least three lithium metal unwinding and cutting devices converge to the loading position of the magnetic levitation conveyor line and are respectively conveyed to the left magnetic levitation conveyor line and the right magnetic levitation conveyor line.

5. The magnetic levitation lithium metal sheet preparation equipment according to claim 1, characterized in that: The electrode primary crimping mechanism includes an electrode unwinding and cutting transfer assembly, a crimping head, and a first crimping head drive. The electrode unwinding and cutting transfer assembly is used to cut the electrode and place it on a lithium metal sheet. The crimping head is provided with protrusions. The first crimping head drive is used to drive the crimping head to move and crimp the electrode onto the lithium metal sheet.

6. The magnetically levitated lithium metal sheet forming equipment according to claim 5, characterized in that: The first pressure head drive component includes a cylinder.

7. The magnetic levitation lithium metal sheet preparation equipment according to claim 5, characterized in that: The electrode tab bonding mechanism includes a tape unwinding and cutting assembly and a bonding assembly. The tape unwinding and cutting assembly is used to cut the tape, and the bonding assembly is used to transfer the cut tape to the electrode tab pressing position of the lithium metal sheet for flat bonding.

8. The magnetic levitation lithium metal sheet preparation equipment according to claim 7, characterized in that: The electrode primary pressing mechanism includes a flat pressing head and a second pressing head drive component. The second pressing head drive component is used to drive the flat pressing head to flatten the electrode pressing position of the lithium metal sheet.

9. A magnetically levitated lithium metal sheet forming device according to claim 8, characterized in that: The second pressure head drive component includes an electric cylinder.

10. A magnetically levitated lithium metal sheet forming device according to claim 1, characterized in that: It also includes an NG rejection mechanism, which is used to reject lithium metal sheets that fail the detection of the tab adhesive detection mechanism.

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