Magnetic suspension lamination device

Abstract

The utility model provides a magnetic suspension lamination device, and relates to the technical field of battery cell production. The magnetic suspension lamination device comprises a lamination table and two magnetic suspension modules, the two magnetic suspension modules are symmetrically arranged on the two sides of the lamination table, each of the two magnetic suspension modules comprises a driving module, a track and a plurality of clamping assemblies, and the multiple clamping assemblies are movably arranged on the corresponding tracks. The driving module is used for driving the multiple clamping assemblies to move along the rails through electromagnetic force, the clamping assemblies in the two magnetic suspension modules are used for clamping and guiding the material belts in a staggered mode in the process of moving on the corresponding rails so that the material belts can be stacked on the stacking table, and the alignment degree between the head pieces and the tail pieces of the battery cells can be improved.

Description

Technical Field

[0001] The present application relates to the technical field of battery cell production, and in particular to a magnetic suspension lamination device. Background Art

[0002] When producing cells, the lithium-ion battery thermal composite stacking machine needs to complete multiple processes, including cutting the coil into single sheets, thermal composite, size calibration, short circuit detection, waste sheet removal, and stacking into cells. Among them, composite sheet stacking is the key technology and plays a decisive role in the alignment of the cell.

[0003] The current mainstream lamination method uses air-blowing lamination. After completing the lamination of one battery cell, this method uses an air nozzle to blow air to the first piece of the next battery cell, and the baffles on both sides of the stacking table are used to position it. Then the free fall of the material strip completes the lamination process of the entire battery cell pole piece. Although this method is highly efficient, since the first piece of the battery cell is positioned by the combination of air blowing and baffles, its falling distance is long, and there are many uncontrollable factors, resulting in poor alignment between the first and last pieces of the battery cell. Utility Model Content

[0004] The purpose of the present application includes, for example, providing a magnetic suspension lamination device that can improve the alignment between the first and last sheets of a battery cell.

[0005] This application can be implemented as follows:

[0006] The present application provides a magnetic levitation lamination device, which includes a stacking platform and two magnetic levitation modules, wherein the two magnetic levitation modules are symmetrically arranged on both sides of the stacking platform, and the two magnetic levitation modules each include a driving module, a track and a plurality of clamping components, wherein the plurality of clamping components can be movably arranged on the corresponding tracks, and the driving module is used for driving the plurality of clamping components to move along the tracks by electromagnetic force, and the clamping components in the two magnetic levitation modules are used for alternately clamping and guiding the material strips during movement on the corresponding tracks, so that the material strips are stacked on the stacking platform.

[0007] Optionally, the clamping assembly includes a movable slider and a clamping member, wherein the movable slider is movably arranged on the corresponding track under the driving force of the electromagnetic force of the driving module, and the clamping member is connected to the movable slider to clamp and guide the material belt.

[0008] Optionally, a magnet is disposed inside the movable slider, and the driving module is a linear motor driving module. The magnet is used to generate electromagnetic force with a magnetic induction coil in the linear motor driving module to drive the movable slider to move.

[0009] Optionally, the linear motor drive module includes two opposite straight segment modules and two opposite circular arc segment modules, and the two straight segment modules and the two circular arc segment modules form a ring-shaped linear motor drive module.

[0010] Optionally, the track is a circular track, and the circular track is arranged around the periphery of the linear motor drive module.

[0011] Optionally, the annular track includes two relative straight tracks and two relative arc tracks, and the two straight tracks and the two arc tracks form the annular track.

[0012] Optionally, a distance between two of the circular arc segment modules far away from the stacking platform in the two magnetic suspension modules is smaller than a distance between two of the circular arc segment modules close to the stacking platform.

[0013] Optionally, a pulley is provided inside the movable slider, and the pulley is slidably engaged with the track.

[0014] Optionally, the clamping member includes a first driving member and two opposite clamping jaws, the first driving member is arranged on the movable slider, and the first driving member is connected to the two clamping jaws at the same time to make the two clamping jaws approach each other or move away from each other.

[0015] Optionally, the magnetic suspension lamination device further includes a second driving member, and the second driving member is connected to the stacking platform to drive the stacking platform to rise and fall.

[0016] The beneficial effects of the magnetic levitation lamination device of the present application include, for example: in order to improve the alignment between the first sheet and the last sheet of the battery cell, a magnetic levitation lamination device is designed, which includes a stacking platform and two magnetic levitation modules, the two magnetic levitation modules are symmetrically arranged on both sides of the stacking platform, the two magnetic levitation modules each include a driving module, a track and a plurality of clamping components, the plurality of clamping components are movably arranged on the corresponding track, during the lamination process, the driving modules in the two magnetic levitation modules respectively drive the plurality of clamping components to move along the track by electromagnetic force, the clamping components in the two magnetic levitation modules clamp the material strips alternately during the movement on the corresponding track, play a guiding role in the falling process of the material strips, so that the material strips are neatly stacked on the stacking platform to form a battery cell, the free fall distance of the material strips is reduced, and the alignment between the first sheet and the last sheet of the battery cell is improved. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings required for use in the embodiments will be briefly introduced below. It should be understood that the following drawings only show certain embodiments of the present application and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other related drawings can be obtained based on these drawings without paying creative work.

[0018] Figure 1 This is a schematic diagram of a magnetic suspension lamination device in an embodiment of the present application;

[0019] Figure 2 This is a schematic diagram of a magnetic suspension module in an embodiment of the present application;

[0020] Figure 3 This is a schematic diagram used to show the clamping member clamping the material strip in the embodiment of the present application.

[0021] Icons: 1-stack; 2-magnetic levitation module; 21-driving module; 211-straight segment module; 212-arc segment module; 22-track; 221-straight track; 222-arc track; 23-clamping assembly; 231-moving slider; 232-clamping member; 2321-clamping claw; 3-second driving member; 4-material belt. DETAILED DESCRIPTION

[0022] In order to make the purpose, technical solution and advantages of the embodiments of the present application clearer, the technical solution in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, rather than all the embodiments. The components of the embodiments of the present application described and shown in the drawings here can be arranged and designed in various different configurations.

[0023] Therefore, the following detailed description of the embodiments of the present application provided in the accompanying drawings is not intended to limit the scope of the present application for which protection is sought, but merely represents selected embodiments of the present application. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in the field without creative work are within the scope of protection of the present application.

[0024] It should be noted that similar reference numerals and letters denote similar items in the following drawings, and therefore, once an item is defined in one drawing, further definition and explanation thereof is not required in subsequent drawings.

[0025] In the description of the present application, it should be noted that if the terms "upper", "lower", "inside", "outside", etc. appear to indicate an orientation or position relationship, it is based on the orientation or position relationship shown in the accompanying drawings, or is the orientation or position relationship in which the utility model product is usually placed when used. It is only for the convenience of describing the present application and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present application.

[0026] In addition, the terms “first”, “second”, etc., if used, are merely used to distinguish between the descriptions and should not be understood as indicating or implying relative importance.

[0027] It should be noted that, in the absence of conflict, the features in the embodiments of the present application may be combined with each other.

[0028] The inventor of the present application has discovered that the current method of lamination by air blowing is to use an air nozzle to blow and stroke the first piece of the next battery cell after completing the lamination of one battery cell, and the baffles on both sides of the stacking table are used for positioning, and then the lamination process of the entire battery cell pole piece is completed by the free fall of the material strip. Although this method is highly efficient, since the first piece of the battery cell is positioned by the combination of air blowing and baffles, its falling distance is long and there are many uncontrollable factors, resulting in poor alignment between the first and last pieces of the battery cell. An embodiment of the present application provides a magnetic levitation lamination device that can improve the alignment between the first and last pieces of a battery cell.

[0029] Please refer to Figure 1-Figure 3 The magnetic levitation lamination device provided in the embodiment of the present application includes a stacking platform 1 and two magnetic levitation modules 2. The two magnetic levitation modules 2 are symmetrically arranged on both sides of the stacking platform 1. The two magnetic levitation modules 2 each include a driving module 21, a track 22 and a plurality of clamping components 23. The plurality of clamping components 23 are movably arranged on the corresponding track 22. The driving module 21 is used to drive the plurality of clamping components 23 to move along the track 22 through electromagnetic force. The clamping components 23 in the two magnetic levitation modules 2 are used to alternately clamp and guide the material strip 4 during the movement on the corresponding track 22 so that the material strip 4 is stacked on the stacking platform 1.

[0030] It should be pointed out that the stacking platform 1 is located between two magnetic levitation modules 2, the driving modules 21 and tracks 22 in the two magnetic levitation modules 2 are fixed on fixed objects such as the ground, walls, and brackets, and multiple clamping components 23 are movably arranged on the corresponding tracks 22. The clamping components 23 can move along the tracks 22 under the drive of the electromagnetic force of the driving module 21, and the material belt 4 moves vertically downward between the two magnetic levitation modules 2 under the drive of the conveyor roller.

[0031] During the falling process of the material strip 4, the clamping components 23 in the two magnetic levitation modules 2 clamp the material strip 4 alternately while moving on the corresponding track 22, that is, the clamping component 23 in the magnetic levitation module 2 on the left clamps the material strip 4 and releases the material strip 4 after guiding it to the left, and then the clamping component 23 in the magnetic levitation module 2 on the right clamps the material strip 4 and releases the material strip 4 after guiding it to the right, so that the material strip 4 is stacked on the stacking platform 1 to finally form a battery cell. The whole process reduces the free fall distance of the material strip 4 and improves the alignment between the first and last pieces of the battery cell.

[0032] In this embodiment, the clamping assembly 23 includes a movable slider 231 and a clamping member 232. The movable slider 231 can be movably arranged on the corresponding track 22 under the electromagnetic force of the driving module 21. The clamping member 232 is connected to the movable slider 231 to clamp and guide the material belt 4.

[0033] When a single clamping member 232 is clamping and guiding the material strip 4, the movable slider 231 is first accelerated to a speed basically consistent with the falling speed of the material strip 4 under the drive of the electromagnetic force of the driving module 21. At this time, the clamping member 232 clamps the material strip 4 again, and the clamping member 232 releases the material strip 4 when it is close to the stacking platform 1, so that the material strip 4 is stacked on the stacking platform 1, reducing the falling distance of the material strip 4, making it easier to align the first and last pieces of the battery cell.

[0034] In this embodiment, a magnet is disposed inside the movable slider 231 , and the driving module 21 is a linear motor driving module. The magnet is used to generate electromagnetic force with the magnetic induction coil in the linear motor driving module to drive the movable slider 231 to move.

[0035] The electromagnetic force generated between the internal magnet of the movable slider 231 and the magnetic induction coil in the linear motor drive module drives the movable slider 231 to move along the track 22. The driving action of the linear motor drive module makes the movement process of the movable slider 231 more flexible and controllable.

[0036] In this embodiment, the linear motor drive module includes two relative straight segment modules 211 and two relative arc segment modules 212. The two straight segment modules 211 and the two arc segment modules 212 form a ring-shaped linear motor drive module; the track 22 is a ring track, which is arranged around the periphery of the linear motor drive module.

[0037] It should be pointed out that the entire magnetic levitation module 2 is tilted in the vertical plane, and the angle between the extension direction of a single straight segment module 211 and the vertical direction is an acute angle. Therefore, the clamping member 232 in the clamping assembly 23 of one magnetic levitation module 2 can clamp the material strip 4 and guide the material strip 4 to the left, and the clamping member 232 in the clamping assembly 23 of another magnetic levitation module 2 can clamp the material strip 4 and guide the material strip 4 to the right, so that the material strip 4 can be neatly stacked on the stacking platform 1; the annular linear motor drive module formed by the two straight segment modules 211 and the two circular arc segment modules 212 can make the movable slider 231 always driven by electromagnetic force during the sliding process on the annular track, and the movement process of the movable slider 231 is flexible and controllable.

[0038] In this embodiment, the annular track includes two opposite linear tracks 221 and two opposite arc tracks 222 . The two linear tracks 221 and the two arc tracks 222 form an annular track.

[0039] The two straight rails 221 are respectively arranged on the outside of the two straight segment modules 211, and the two arc rails 222 are respectively arranged on the outside of the two arc segment modules 212. When the movable slider 231 slides on the straight rails 221, the straight segment module 211 drives the movable slider 231, and when the movable slider 231 slides on the arc rails 222, the arc segment module 212 drives the movable slider 231.

[0040] In this embodiment, the distance between two arc segment modules 212 far from the stacking platform 1 in the two magnetic suspension modules 2 is smaller than the distance between two arc segment modules 212 close to the stacking platform 1 .

[0041] It should be pointed out that the top ends of the two magnetic levitation modules 2 are higher than the stacking platform 1, the bottom ends of the two magnetic levitation modules 2 are lower than the stacking platform 1, and the distance between the two arc segment modules 212 at the top ends of the two magnetic levitation modules 2 is smaller than the distance between the two arc segment modules 212 at the bottom ends of the two magnetic levitation modules 2.

[0042] The material strip 4 falls between the two magnetic levitation modules 2. When the movable slider 231 moves to the arc track 222 at the top of the magnetic levitation module 2, the clamping piece 232 connected to the movable slider 231 can clamp the material strip 4. As the movable slider 231 falls along the linear track 221, the clamping piece 232 of the left magnetic levitation module 2 can guide the material strip 4 to the left, and the clamping piece 232 of the right magnetic levitation module 2 can guide the material strip 4 to the right.

[0043] In this embodiment, a pulley is disposed inside the movable slider 231 , and the pulley is slidably matched with the track 22 .

[0044] It should be pointed out that multiple pulleys can be set inside the movable slider 231. When the linear track 221 moves, the multiple pulleys slide in cooperation with the linear track 221. When the circular arc track 222 moves, the multiple pulleys slide in cooperation with the circular arc track 222. Setting the pulleys to slide in cooperation with the track 22 can reduce the wear between the movable slider 231 and the track 22.

[0045] In this embodiment, the clamping member 232 includes a first driving member (not shown) and two opposite clamping jaws 2321. The first driving member is arranged on the movable slider 231. The first driving member is connected to the two clamping jaws 2321 at the same time to make the two clamping jaws 2321 approach each other or move away from each other.

[0046] The first driving member may include two cylinders, both of which are arranged on the movable slider 231 and are respectively connected to the two clamping jaws 2321; the two cylinders respectively drive the two clamping jaws 2321 to move closer to or away from each other. In other embodiments, the first driving member may also include only one cylinder, and the single cylinder drives one of the clamping jaws 2321 to move closer to or away from the other clamping jaw 2321.

[0047] When the two clamps 2321 are close to each other, the two clamps 2321 can clamp on both sides of the material belt 4, thereby guiding the material belt 4. When the clamping member 232 moves to a position close to the stacking platform 1, the first driving member drives the two clamps 2321 away from each other, releases the material belt 4 and allows it to fall freely to the stacking platform 1 for stacking.

[0048] In this embodiment, the magnetic suspension lamination device further includes a second driving member 3, which is connected to the lamination platform 1 to drive the lamination platform 1 to move up and down.

[0049] The second driving member 3 includes a motor and a screw mechanism. The motor is fixed on a fixed object such as the ground or a bracket. The motor is connected to the screw mechanism in a transmission manner. The screw mechanism is connected to the stacking platform 1. When the motor is started, the screw mechanism can drive the stacking platform 1 to rise and fall, so that the height of the stacking platform 1 is adjustable, thereby improving the flexibility of the stacking platform 1.

[0050] In summary, the embodiment of the present application provides a magnetic levitation lamination device. During the falling process of the material strip 4, the linear motor drive module drives the movable slider 231 to slide on the track 22 through electromagnetic force, and the clamping member 232 moves with the corresponding movable slider 231. The clamping member 232 in the magnetic levitation module 2 on the left clamps the material strip 4 and guides it to the left and then releases the material strip 4. The clamping member 232 in the magnetic levitation module 2 on the right clamps the material strip 4 and guides it to the right and then releases the material strip 4. The clamping member 232 in the magnetic levitation module 2 on the left and the clamping member 232 in the magnetic levitation module 2 on the right alternately clamp and guide the material strip 4 until the material strip 4 is stacked on the stacking platform 1 and forms a battery cell. Finally, the external manipulator transfers the stacked battery cell to the unloading position. The whole process reduces the free fall distance of the material strip 4, and the alignment between the first and last pieces of the formed battery cell is better.

[0051] The above is only a specific implementation of the present application, but the protection scope of the present application is not limited thereto. Any changes or substitutions that can be easily thought of by a person skilled in the art within the technical scope disclosed in the present application should be included in the protection scope of the present application. Therefore, the protection scope of the present application shall be based on the protection scope of the claims.

Claims

1. A magnetic suspension lamination device, characterized in that: It includes a stacking platform and two magnetic levitation modules, the two magnetic levitation modules are symmetrically arranged on both sides of the stacking platform, the two magnetic levitation modules each include a driving module, a track and a plurality of clamping components, the plurality of clamping components can be movably arranged on the corresponding tracks, the driving module is used to drive the plurality of clamping components to move along the tracks by electromagnetic force, and the clamping components in the two magnetic levitation modules are used to alternately clamp and guide the material strips during the movement on the corresponding tracks so that the material strips are stacked on the stacking platform.

2. The magnetic suspension lamination device according to claim 1, characterized in that: The clamping assembly includes a movable slider and a clamping member. The movable slider is movably arranged on the corresponding track under the driving of the electromagnetic force of the driving module. The clamping member is connected to the movable slider to clamp and guide the material belt.

3. The magnetic suspension lamination device according to claim 2, characterized in that: A magnet is arranged inside the movable slider, and the driving module is a linear motor driving module. The magnet is used to generate electromagnetic force with the magnetic induction coil in the linear motor driving module to drive the movable slider to move.

4. The magnetic suspension lamination device according to claim 3, characterized in that: The linear motor drive module includes two opposite straight segment modules and two opposite arc segment modules, and the two straight segment modules and the two arc segment modules form a ring-shaped linear motor drive module.

5. The magnetic suspension lamination device according to claim 4, characterized in that: The track is a circular track, and the circular track is arranged around the periphery of the linear motor driving module.

6. The magnetic suspension lamination device according to claim 5, characterized in that: The annular track includes two opposite linear tracks and two opposite arc tracks, and the two linear tracks and the two arc tracks form the annular track.

7. The magnetic suspension lamination device according to claim 4, characterized in that: The distance between the two circular arc segment modules far away from the stacking platform in the two magnetic suspension modules is smaller than the distance between the two circular arc segment modules close to the stacking platform.

8. The magnetic suspension lamination device according to claim 2, characterized in that: A pulley is arranged inside the movable slider, and the pulley is slidably matched with the track.

9. The magnetic suspension lamination device according to claim 2, characterized in that: The clamping member includes a first driving member and two opposite clamping jaws. The first driving member is arranged on the movable slider. The first driving member is connected to the two clamping jaws at the same time so that the two clamping jaws are moved closer to each other or farther away from each other.

10. The magnetic suspension lamination device according to claim 1, characterized in that: The magnetic suspension lamination device further comprises a second driving member, which is connected to the stacking platform to drive the stacking platform to rise and fall.

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