Double-station rounding and leveling mechanism

Abstract

The utility model discloses a double-station rounding and flattening mechanism which comprises a battery cell conveying belt device, a battery cell jacking device, a battery cell rounding device, a battery cell inner side flattening device, a battery cell outer side flattening device and a battery cell descending device, the battery cell rounding device is provided with a battery cell rounding station and a battery cell leveling station, the battery cell jacking device and the battery cell descending device are sequentially arranged in the battery cell conveying direction of the battery cell conveying belt device, and the battery cell jacking device is located below the battery cell rounding station of the battery cell rounding device. The battery cell descending device is located below a battery cell leveling station of the battery cell rounding device, and the battery cell inner side leveling device and the battery cell outer side leveling device are oppositely arranged on the inner side and the outer side of the battery cell leveling station of the battery cell rounding device. According to the utility model, the diameter of the battery cell can be effectively controlled, the flatness of the tab can be improved, the yield of the subsequent process can be improved, and the working efficiency can be effectively improved by adopting double-station rounding and leveling.

Description

Technical Field

[0001] The utility model relates to the technical field of lithium battery technology, in particular to a double-station full-circle flattening mechanism. Background Art

[0002] In the lithium battery process, after the cylindrical battery cell is wound, due to factors such as fluctuations in winding tension, the outer diameter of the battery cell may vary and have out-of-tolerance conditions, which will affect the back-end shell insertion process. In addition, the flatness of the tabs after die-cutting and winding will affect the performance of the battery cell. Utility Model Content

[0003] The purpose of the utility model is to provide a double-station full-circle flattening mechanism to solve the problem in the existing lithium battery process that after the battery core is wound, the outer diameter of the battery core is uneven and out of tolerance due to factors such as fluctuations in winding tension.

[0004] The technical solution of the utility model is as follows:

[0005] A double-station rounding and leveling mechanism comprises a battery cell conveying belt device, a battery cell lifting device, a battery cell rounding device, a battery cell inner side leveling device, a battery cell outer side leveling device and a battery cell lowering device. The battery cell rounding device is arranged above the battery cell conveying belt device. The battery cell rounding device is provided with a battery cell rounding station and a battery cell leveling station. The battery cell lifting device and the battery cell lowering device are arranged in sequence along the battery cell conveying direction of the battery cell conveying belt device. The battery cell lifting device is located below the battery cell rounding station of the battery cell rounding device. The battery cell lowering device is located below the battery cell leveling station of the battery cell rounding device. The battery cell inner side leveling device and the battery cell outer side leveling device are relatively arranged on the inner and outer sides of the battery cell leveling station of the battery cell rounding device.

[0006] Furthermore, the battery cell conveying belt device includes a first bracket, a first motor, a synchronous wheel, a synchronous tensioning wheel and a synchronous conveyor belt. The synchronous conveyor belt is arranged on the first bracket. Synchronous wheels and synchronous tensioning wheels are rotatably arranged at both ends of the synchronous conveyor belt. The motor shaft of the first motor is connected to the synchronous wheel.

[0007] Furthermore, battery cell jigs are equidistantly arranged on the synchronous conveyor belt.

[0008] Furthermore, the battery cell rounding device includes a second bracket, a first transverse guide rail, a rodless cylinder and a rounding clamp assembly. The first transverse guide rail and the rodless cylinder are arranged on the second bracket, and the rounding clamp assembly is movably arranged on the first transverse guide rail and is driven by the rodless cylinder to move back and forth along the battery cell conveying direction.

[0009] Furthermore, the full circle clamp assembly includes a movable plate, a first full circle clamp assembly and a second full circle clamp assembly. The movable plate is slidably connected to the first transverse guide rail, and the first full circle clamp assembly and the second full circle clamp assembly are relatively arranged at the bottom of the movable plate.

[0010] Furthermore, the first full circle clamp assembly and the second full circle clamp assembly each include a second motor, a bidirectional screw rod, a full circle clamp and a second transverse guide rail, the second motor is connected to the bidirectional screw rod, and the full circle clamp is movably arranged on the bidirectional screw rod and the second transverse guide rail.

[0011] Furthermore, the battery cell lifting device includes a third motor, a first transmission assembly, a first vertical guide rail, a first screw rod, a first battery cell supporting claw and a second battery cell supporting claw. The third motor is connected to the first screw rod through the first transmission assembly, and the first battery cell supporting claw and the second battery cell supporting claw are relatively movably arranged on the first screw rod and the first vertical guide rail.

[0012] Furthermore, there are two battery cell inner side flattening devices and two battery cell outer side flattening devices respectively provided front and back.

[0013] Furthermore, the battery cell inner side leveling device and the battery cell outer side leveling device both include a fourth motor, a second transmission assembly, a second screw rod, a movable seat, a pressure sensor, a guide sleeve, a leveling plate and a third transverse guide rail. The fourth motor is connected to the second screw rod through the second transmission assembly, the movable seat is movably set on the second screw rod and the third transverse guide rail, the pressure sensor is set at the end of the movable seat, and the leveling plate is movably set on the pressure sensor through the guide sleeve.

[0014] Furthermore, the battery cell lowering device includes a fifth motor, a third transmission assembly, a second vertical guide rail, a third screw rod, a third battery cell supporting claw and a fourth battery cell supporting claw. The fifth motor is connected to the third screw rod through the third transmission assembly, and the third battery cell supporting claw and the fourth battery cell supporting claw are relatively movably arranged on the third screw rod and the second vertical guide rail.

[0015] Compared with the existing technology, the beneficial effect of the present invention is that the present invention can effectively control the diameter of the battery cell and improve the flatness of the tab by rounding the battery cell and flattening the tab during the winding, unloading and conveying stage of the battery cell, thereby improving the yield of the subsequent process, and adopting double-station rounding and flattening to effectively improve work efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0017] Figure 1 This is a structural diagram of a double-station full-circle flattening mechanism provided by the utility model;

[0018] Figure 2 This is a structural diagram of the battery cell conveying belt device of the utility model;

[0019] Figure 3 This is a structural diagram of the battery cell rounding device of the present invention;

[0020] Figure 4 This is a schematic structural diagram of the first full-circle clamp assembly and the second full-circle clamp assembly of the present invention;

[0021] Figure 5 This is a structural diagram of the battery cell lifting device of the present invention;

[0022] Figure 6 This is a schematic structural diagram of the battery cell inner side flattening device and the battery cell outer side flattening device of the present invention;

[0023] Figure 7 It is a structural schematic diagram of the battery cell lowering device described in the present utility model. DETAILED DESCRIPTION

[0024] In order to make the purpose, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not intended to limit the present invention.

[0025] In order to illustrate the technical solution of the present invention, specific embodiments are provided below.

[0026] Example

[0027] See also Figure 1The present embodiment provides a double-station rounding and leveling mechanism, comprising a battery cell conveying belt device 1, a battery cell lifting device 2, a battery cell rounding device 3, a battery cell inner side leveling device 4, a battery cell outer side leveling device 5 and a battery cell lowering device 6. The battery cell rounding device 3 is arranged above the battery cell conveying belt device 1. The battery cell rounding device 3 is provided with a battery cell rounding station and a battery cell leveling station. The battery cell lifting device 2 and the battery cell lowering device 6 are arranged in sequence along the battery cell conveying direction of the battery cell conveying belt device 1. The battery cell lifting device 2 is located below the battery cell rounding station of the battery cell rounding device 3. The battery cell lowering device 6 is located below the battery cell leveling station of the battery cell rounding device 3. The battery cell inner side leveling device 4 and the battery cell outer side leveling device 5 are relatively arranged on the inner and outer sides of the battery cell leveling station of the battery cell rounding device 3. There are two battery cell inner side leveling devices 4 and two battery cell outer side leveling devices 5 provided in front and back.

[0028] Specific, combined Figure 2 As shown, the battery cell conveying belt device 1 includes a first bracket 11, a first motor 12, a synchronous wheel 13, a synchronous tensioning wheel 14 and a synchronous conveyor belt 15. The synchronous conveyor belt 15 is arranged on the first bracket 11. Synchronous wheels 13 and synchronous tensioning wheels 14 are rotatably arranged at both ends of the synchronous conveyor belt 15. The motor shaft of the first motor 12 is connected to the synchronous wheel 13. The synchronous wheel 13 is driven to rotate by the first motor 12, thereby driving the synchronous conveyor belt 15 to operate. Battery cell jigs 16 are equidistantly provided on the synchronous conveyor belt 15, and the battery cells are placed on the battery cell jig 16 for conveyance.

[0029] Specific, combined Figure 3 、 Figure 4 As shown, the cell rounding device 3 includes a second bracket 31, a first transverse guide rail 32, a rodless cylinder 33 and a round clamp assembly 34. The first transverse guide rail 32 and the rodless cylinder 33 are arranged on the second bracket 31. The round clamp assembly 34 is movably arranged on the first transverse guide rail 32 and is driven by the rodless cylinder 33 to move back and forth along the cell conveying direction; the round clamp assembly 34 includes a movable plate 341, a first round clamp assembly 342 and a second round clamp assembly 343. The movable plate 341 is slidably connected to the first transverse guide rail On the rail 32, the first full circle clamp assembly 342 and the second full circle clamp assembly 343 are relatively arranged at the bottom of the movable plate 341; the first full circle clamp assembly 342 and the second full circle clamp assembly 343 both include a second motor 35, a bidirectional screw rod 36, a full circle clamp 37 and a second transverse guide rail 38, the second motor 35 is connected to the bidirectional screw rod 36, and the full circle clamp 37 is movably arranged on the bidirectional screw rod 36 and the second transverse guide rail 38, and the clamping action can be completed by driving the second motor 35 and the bidirectional screw rod 36.

[0030] Specific, combined Figure 5As shown, the battery cell lifting device 2 includes a third motor 21, a first transmission assembly 22, a first vertical guide rail 23, a first screw rod 24, a first battery cell supporting claw 25 and a second battery cell supporting claw 26. The third motor 21 is connected to the first screw rod 24 through the first transmission assembly 22. The first battery cell supporting claw 25 and the second battery cell supporting claw 26 are relatively movable on the first screw rod 24 and the first vertical guide rail 23. The first battery cell supporting claw 25 and the second battery cell supporting claw 26 can be driven by the third motor 21 to rise and fall along the first vertical guide rail 23.

[0031] Specific, combined Figure 6 As shown, the battery cell inner side flattening device 4 and the battery cell outer side flattening device 5 both include a fourth motor 41, a second transmission assembly 42, a second screw rod 43, a movable seat 44, a pressure sensor 45, a guide sleeve 46, a flat plate 47 and a third transverse guide rail 48. The fourth motor 41 is connected to the second screw rod 43 through the second transmission assembly 42, the movable seat 44 is movably set on the second screw rod 43 and the third transverse guide rail 48, the pressure sensor 45 is set at the end of the movable seat 44, and the flat plate 47 is movably set on the pressure sensor 45 through the guide sleeve 46. The flat plate 47 can be driven by the fourth motor 41 to move along the third transverse guide rail 48.

[0032] Specific, combined Figure 7 As shown, the battery cell lowering device 6 includes a fifth motor 61, a third transmission assembly 62, a second vertical guide rail 63, a third screw rod 64, a third battery cell supporting claw 65 and a fourth battery cell supporting claw 66. The fifth motor 61 is connected to the third screw rod 64 through the third transmission assembly 62. The third battery cell supporting claw 65 and the fourth battery cell supporting claw 66 are relatively movable and arranged on the third screw rod 64 and the second vertical guide rail 63. The third battery cell supporting claw 65 and the fourth battery cell supporting claw 66 can be driven by the fifth motor 61 to rise and fall along the second vertical guide rail 63.

[0033] The specific workflow is as follows:

[0034] 1. After winding, the battery cell is transferred to the battery cell fixture 16 on the synchronous conveyor belt 15 through the blanking transfer structure;

[0035] 2. The synchronous conveyor belt 15 transports the battery cells to the battery cell lifting device 2;

[0036] 3. Driven by the third motor 21 and the first screw rod 24, the first battery cell supporting claw 25 and the second battery cell supporting claw 26 lift two battery cells at a time to the battery cell rounding station of the battery cell rounding device 3;

[0037] 4. The first full-circle clamp assembly 342 and the second full-circle clamp assembly 343 of the full-circle clamp 37 clamp the battery cell under the action of the second motor 35 and the bidirectional screw rod 36;

[0038] 5. After the first full-circle clamp assembly 342 and the second full-circle clamp assembly 343 clamp the battery cell, the first battery cell supporting claw 25 and the second battery cell supporting claw 26 of the battery cell lifting device 2 descend back to their initial positions;

[0039] 6. Driven by the first motor 12, the synchronous conveyor belt 15 moves the battery fixture 16 to the next station. At the same time, the rodless cylinder 33 of the battery rounding device 3 is actuated to move the two battery cells to the battery cell flattening station.

[0040] 7. The flattening plates 47 of the inner and outer flattening devices 4 and 5 move relative to each other in the axial direction of the cell under the drive of the fourth motor 41 and the second screw rod 43, clamping the cell for a certain period of time to flatten the cell tabs. In conjunction with the pressure sensor 45, the flattening pressure can be detected in real time to prevent damage to the cell.

[0041] 8. After the battery cell tabs are flattened, the flattening plates 47 of the battery cell inner flattening device 4 and the battery cell outer flattening device 5 return to their initial positions;

[0042] 9. The third battery cell supporting claw 65 and the fourth battery cell supporting claw 66 of the battery cell lowering device 6 are lifted under the drive of the fifth motor 61 and the third screw rod 64, and the two battery cells are slightly lifted;

[0043] 10. Then, the circular clamps 37 of the first and second circular clamp assemblies 342 and 343 are opened, so that the two battery cells fall onto the third and fourth battery cell supporting claws 65 and 66, respectively.

[0044] 11. The third battery cell supporting claw 65 and the fourth battery cell supporting claw 66 of the battery cell lowering device 6 descend back to their initial positions, and the two battery cells are placed on the corresponding battery cell jigs 16 of the synchronous conveyor belt 15;

[0045] 12. Finally, the rodless cylinder 33 of the battery cell rounding device 3 moves back to the initial position, and this cycle repeats.

[0046] The above are only preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent replacements and improvements made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A double-station full-circle flattening mechanism, characterized by: The utility model comprises a battery cell conveying belt device, a battery cell lifting device, a battery cell rounding device, a battery cell inner side flattening device, a battery cell outer side flattening device and a battery cell lowering device. The battery cell rounding device is arranged above the battery cell conveying belt device. The battery cell rounding device is provided with a battery cell rounding station and a battery cell flattening station. The battery cell lifting device and the battery cell lowering device are arranged in sequence along the battery cell conveying direction of the battery cell conveying belt device. The battery cell lifting device is located below the battery cell rounding station of the battery cell rounding device. The battery cell lowering device is located below the battery cell flattening station of the battery cell rounding device. The battery cell inner side flattening device and the battery cell outer side flattening device are relatively arranged on the inner and outer sides of the battery cell flattening station of the battery cell rounding device.

2. A double-station full-circle flattening mechanism according to claim 1, characterized in that: The battery cell conveying belt device includes a first bracket, a first motor, a synchronous wheel, a synchronous tensioning wheel and a synchronous conveyor belt. The synchronous conveyor belt is arranged on the first bracket. Synchronous wheels and synchronous tensioning wheels are rotatably arranged at both ends of the synchronous conveyor belt. The motor shaft of the first motor is connected to the synchronous wheel.

3. The double-station full-circle flattening mechanism according to claim 2, characterized in that: Battery core jigs are equidistantly arranged on the synchronous conveyor belt.

4. The double-station full-circle flattening mechanism according to claim 1, characterized in that: The battery cell rounding device includes a second bracket, a first transverse guide rail, a rodless cylinder and a rounding clamp assembly. The first transverse guide rail and the rodless cylinder are arranged on the second bracket. The rounding clamp assembly is movably arranged on the first transverse guide rail and is driven by the rodless cylinder to move back and forth along the battery cell conveying direction.

5. The double-station full-circle flattening mechanism according to claim 4, characterized in that: The full circle clamp assembly includes a movable plate, a first full circle clamp assembly and a second full circle clamp assembly. The movable plate is slidably connected to the first transverse guide rail. The first full circle clamp assembly and the second full circle clamp assembly are relatively arranged at the bottom of the movable plate.

6. The double-station full-circle flattening mechanism according to claim 5, characterized in that: The first full circle clamp assembly and the second full circle clamp assembly both include a second motor, a bidirectional screw rod, a full circle clamp and a second transverse guide rail. The second motor is connected to the bidirectional screw rod, and the full circle clamp is movably arranged on the bidirectional screw rod and the second transverse guide rail.

7. The double-station full-circle flattening mechanism according to claim 1, characterized in that: The battery cell lifting device includes a third motor, a first transmission assembly, a first vertical guide rail, a first screw rod, a first battery cell supporting claw and a second battery cell supporting claw. The third motor is connected to the first screw rod through the first transmission assembly. The first battery cell supporting claw and the second battery cell supporting claw are relatively movable on the first screw rod and the first vertical guide rail.

8. The double-station full-circle flattening mechanism according to claim 1, characterized in that: The battery core inner side flattening device and the battery core outer side flattening device are both provided with two in front and back.

9. The double-station full-circle flattening mechanism according to claim 8, characterized in that: The battery cell inner side flattening device and the battery cell outer side flattening device both include a fourth motor, a second transmission assembly, a second screw rod, a movable seat, a pressure sensor, a guide sleeve, a flat plate and a third transverse guide rail. The fourth motor is connected to the second screw rod through the second transmission assembly, the movable seat is movably arranged on the second screw rod and the third transverse guide rail, the pressure sensor is arranged at the end of the movable seat, and the flat plate is movably arranged on the pressure sensor through the guide sleeve.

10. The double-station full-circle flattening mechanism according to claim 1, characterized in that: The battery cell lowering device includes a fifth motor, a third transmission assembly, a second vertical guide rail, a third screw rod, a third battery cell supporting claw and a fourth battery cell supporting claw. The fifth motor is connected to the third screw rod through the third transmission assembly. The third battery cell supporting claw and the fourth battery cell supporting claw are relatively movably arranged on the third screw rod and the second vertical guide rail.

Images