Battery cell lamination platform

Abstract

The utility model discloses a battery cell lamination platform which comprises a base, a liftable lamination platform is arranged on the base, first sliding rails arranged in parallel and a pressing claw lifting motor for driving the first sliding rails to move up and down are arranged below the lamination platform, and each first sliding rail is provided with two sets of pressing claw assemblies for fixing a battery cell on the lamination platform. An opening and closing motor is arranged on the base, the output end of the opening and closing motor is connected with a positive and negative screw rod, the positive and negative screw rod is in threaded connection with power connecting blocks corresponding to the two sets of pressing claw assemblies respectively, cam followers are arranged on the power connecting blocks, and follow-up connecting plates are arranged on the pressing claw assemblies. The follow-up connecting plate is provided with a follow-up groove matched with the cam follow-up device, the follow-up groove extends vertically, and the opening and closing motor controls the two sets of pressing claw assemblies to be opened and closed in a sliding mode along the first sliding rail through the forward and reverse screw rods. According to the utility model, the machine adjusting efficiency during production remodeling is improved, the response time of pressing of the pressing claws is reduced, and the lamination efficiency and the lamination quality are improved.

Description

Technical Field

[0001] The utility model relates to the technical field of battery production equipment, in particular to a battery core stacking platform. Background Art

[0002] In recent years, with the development of new energy electric vehicles, the demand for power batteries has also been growing. At present, widely used power batteries are usually composed of a multi-layer structure. For example, a typical power battery usually includes a positive electrode sheet, a separator and a negative electrode sheet. In the process of manufacturing power batteries, these materials to be stacked need to be stacked.

[0003] In the prior art, an alternatingly clamped stacking table device is used. This stacking table device drives two sets of pressure claw mechanisms to open and close through two sets of moving mechanisms. The pressure claws of each set of pressure claw mechanisms are controlled to rise and fall by independent cylinders. Since the pressure claws of the four sets of pressure claw mechanisms are controlled to rise and fall by four cylinders, it is more troublesome to adjust the machine during production changeover, the cylinder response time is slow, and the stacking efficiency is low. Utility Model Content

[0004] The utility model aims at the defects of the prior art and provides a battery core stacking platform, which can improve the machine adjustment efficiency during production change and improve the stacking efficiency.

[0005] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0006] A battery cell stacking platform comprises a base, a stacking platform that can be raised and lowered is provided on the base, a first slide rail arranged in parallel and a pressure claw lifting motor that drives the first slide rail to move up and down are provided below the stacking platform, the pressure claw lifting motor drives the first slide rail to move up and down through the pressure claw lifting screw rod, each of the first slide rails is provided with two groups of pressure claw assemblies for fixing the battery cell on the stacking platform, an opening and closing motor is provided on the base, the output end of the opening and closing motor is connected with a forward and reverse screw rod, and the forward and reverse screw rods are threadedly connected with power connecting blocks corresponding to the two groups of pressure claw assemblies respectively, a cam follower is provided on the power connecting block, a follower connecting plate is provided on the pressure claw assembly, a follower groove that cooperates with the cam follower is provided on the follower connecting plate, and the follower groove extends vertically, and the opening and closing motor controls the two groups of pressure claw assemblies to slide and open and close along the first slide rail through the forward and reverse screw rods. By arranging a cam follower on the power connecting block and arranging a follower groove that cooperates with the cam follower on the follower connecting plate, the opening and closing of the pressure jaw assembly can be controlled by the opening and closing motor, and the up and down movement of the pressure jaw assembly can be controlled by the pressure jaw lifting motor, thereby improving the machine adjustment efficiency during production changeover, reducing the response time of the pressure jaw pressing, and improving the stacking efficiency and stacking quality.

[0007] As a preferred technical solution, a second slide rail parallel to the first slide rail is fixedly provided on the base beside the first slide rail, and the power connecting block is slidably connected to the second slide rail.

[0008] As a preferred technical solution, a slide rail mounting seat is fixedly provided on the base, a vertically arranged third slide rail is provided on the slide rail mounting seat, a vertically movable cross plate is slidably provided on the third slide rail, the first slide rail is arranged on the vertically movable cross plate, a vertically movable seat is threadedly connected on the pressure claw lifting screw rod, and the vertically movable cross plate is fixedly connected to the vertically movable seat.

[0009] As a preferred technical solution, both ends of the vertically movable cross plate are provided with return springs which make the two groups of pressure claw assemblies on the first slide rail always have a tendency to separate. One end of the return spring is connected to the vertically movable cross plate, and the other end is connected to the follower connecting plate.

[0010] As a preferred technical solution, the pressure claw assembly includes an opening and closing slide slidably connected to the first slide rail, a pressure claw mounting seat arranged on the opening and closing slide, and a pressure claw arranged on the pressure claw mounting seat, and the follower connecting plate is fixedly connected to the opening and closing slide.

[0011] As a preferred technical solution, a vertically extending downward pressure slide rail is provided on the opening and closing slide, the pressure claw mounting seat is slidably connected to the downward pressure slide rail, and a buffer spring is provided between the opening and closing slide and the pressure claw mounting seat to ensure that the pressure claw always has a tendency to move downward.

[0012] As a preferred technical solution, a stack mounting seat is provided on the base, a vertically extending lifting slide rail is provided on the stack mounting seat, a stack movable frame is slidably provided on the lifting slide rail, the stacking platform is arranged at the upper end of the stack movable frame, and a stack lifting motor for driving the stack movable frame to move up and down along the lifting slide rail is provided on the base, a stack lifting screw rod is connected to the output end of the stack lifting motor, and the stack lifting screw rod is threadedly connected to the stack movable frame.

[0013] As a preferred technical solution, the stacking table is provided with a clamping groove, and the stacking movable frame is provided with a filling block for filling the clamping groove during stacking and a filling driving member for driving the filling block to move up and down. The filling driving member is a lifting cylinder, and the output end of the lifting cylinder is connected to a filling movable seat, and the filling block is installed on the filling movable seat.

[0014] As a preferred technical solution, a diaphragm correction mechanism and a diaphragm cutting mechanism are provided on opposite sides of the stacking table, the diaphragm correction mechanism includes a correction suction plate and a correction motor that drives the correction suction plate to move horizontally, the output end of the correction motor is connected to a correction screw, the correction motor drives the correction suction plate to move through the correction screw, a plurality of suction holes are provided on the upper surface of the correction suction plate, and the diaphragm cutting mechanism includes a heating wire and a cutting drive mechanism that drives the heating wire to move up and down.

[0015] As a preferred technical solution, it also includes a lamination transverse movement module that drives the base to move horizontally.

[0016] Compared with the prior art, the utility model has obvious advantages and beneficial effects. Specifically, the utility model arranges a cam follower on the power connecting block, and arranges a follower groove matched with the cam follower on the follower connecting plate, so that the opening and closing of the pressure claw assembly can be controlled by an opening and closing motor, and the up and down movement of the pressure claw assembly can be controlled by a pressure claw lifting motor, thereby improving the machine adjustment efficiency during production changeover, reducing the response time of the pressure claw pressing, and improving the stacking efficiency and stacking quality.

[0017] In order to more clearly explain the structural features, technical means and specific purposes and functions achieved by the present invention, the present invention is further described in detail below in conjunction with the accompanying drawings and specific embodiments: BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is an assembly structure diagram of an embodiment of the utility model;

[0019] Figure 2 It is a structural schematic diagram of the diaphragm deviation correction mechanism of an embodiment of the utility model;

[0020] Figure 3 It is a structural schematic diagram of the diaphragm cutting mechanism of an embodiment of the utility model;

[0021] Figure 4 This is a diagram of the installation structure of the lamination table of the embodiment of the utility model;

[0022] Figure 5 It is a side view of the installation structure of the lamination table of the embodiment of the utility model;

[0023] Figure 6 This is a schematic diagram of the opening and closing driving structure of the pressure claw assembly of the embodiment of the utility model;

[0024] Figure 7 yes Figure 6 The enlarged schematic diagram of point A in the middle;

[0025] Figure 8 It is a schematic diagram of the lifting and driving structure of the pressure claw assembly of an embodiment of the utility model.

[0026] Description of the accompanying drawings:

[0027] 10. Base 11. Lamination lateral movement module 12. Slide rail mounting seat

[0028] 13. Third slide rail 20, stacking table 21, clamping claw groove

[0029] 22. Replacement block 23. Replacement movable seat 24. Replacement drive member

[0030] 30. Diaphragm deviation correction mechanism 31. Deflection correction suction plate 32. Deflection correction motor

[0031] 33. Correction screw rod 34. Correction fixing seat 35. Correction slide rail

[0032] 36. Correction movable block 37. Suction hole 40. Diaphragm cutting mechanism

[0033] 41. Heating wire 42. Cut-off drive mechanism 43. Position adjustment block

[0034] 44. Heating wire mounting block 45. Compression spring 50. Pressure claw assembly

[0035] 51, follow-up connecting plate 511, follow-up groove 52, opening and closing slide seat

[0036] 53. Pressing claw mounting seat 54. Pressing claw 55. Pressing slide rail

[0037] 56, buffer spring 60, stack lifting motor 61, stack mounting seat

[0038] 62. Lifting slide rail 63. Laminated movable frame 64. Laminated lifting screw rod

[0039] 70, opening and closing motor 71, forward and reverse screw rods 72, power connection block

[0040] 73, cam follower 74, second slide rail 80, pressure claw lifting motor

[0041] 81, first slide rail 82, pressure claw lifting screw 83, vertical movable seat

[0042] 84. Vertically movable horizontal plate 85. Return spring. DETAILED DESCRIPTION

[0043] In the description of the present invention, it should be noted that the terms "center", "up", "down", "left", "right", "vertical", "horizontal", "inside", "outside", etc. indicate directions or positional relationships based on the directions or positional relationships shown in the accompanying drawings. They are only for the convenience of describing the utility model and simplifying the description, and do not indicate or imply that the position or element referred to must have a specific direction, be constructed and operated in a specific direction. Therefore, they cannot be understood as limitations on the present invention.

[0044] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installation", "connection" and "connection" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to the specific circumstances.

[0045] like Figure 1-3 As shown, a battery cell stacking platform includes a base 10 and a stacking transverse movement module 11 for driving the base 10 to move horizontally, the base 10 is provided with a liftable stacking platform 20, and opposite sides of the stacking platform 20 are provided with a diaphragm correcting mechanism 30 and a diaphragm cutting mechanism 40, the diaphragm correcting mechanism 30 includes a correcting suction plate 31 and a correcting motor 32 for driving the correcting suction plate 31 to move horizontally, the output end of the correcting motor 32 is connected to a correcting screw rod 33, the correcting motor 32 drives the correcting suction plate 31 to move through the correcting screw rod 33, and the upper surface of the correcting suction plate 31 is provided with a plurality of suction holes 37, and the diaphragm cutting mechanism 40 includes a heating wire 41 and a cutting driving mechanism 42 for driving the heating wire 41 to move up and down.

[0046] Specifically, the diaphragm correction mechanism 30 also includes a correction fixing seat 34, a horizontally extending correction slide rail 35 is provided on the correction fixing seat 34, the correction suction plate 31 is slidably connected to the correction slide rail 35 through a slider, and a correction movable block 36 is provided on the correction suction plate 31, and the correction movable block 36 is threadedly connected to the correction screw 33. Two photoelectric sensors (not shown) are provided on both sides of the diaphragm. Since the diaphragm needs to be backblown after cutting, the position of the diaphragm after backblowing is unknown. When the photoelectric sensor detects that the diaphragm position is offset, the correction motor 32 drives the correction suction plate 31 to move along the correction slide rail 35 through the correction screw 33, and the suction hole 37 on the correction suction plate 31 sucks the end of the diaphragm for correction. The cutting drive mechanism 42 is a cutting cylinder, and a position adjustment block 43 is provided at the driving end of the cutting cylinder, and a heating wire mounting block 44 is provided on the position adjustment block 43. The two ends of the heating wire 41 are fixedly provided on the corresponding heating wire mounting blocks 44. In actual use, the position of the heating wire 41 can be adjusted by adjusting the position of the heating wire mounting block 44 on the position adjustment block 43 according to the size of different battery cells. The heating wire 41 is a tungsten wire, and the two ends of the tungsten wire are connected to the power supply during operation, so that the tungsten wire is heated. Since the size of the tungsten wire becomes longer after heating, compression springs 45 are provided at both ends of the tungsten wire to keep it in a taut state.

[0047] like Figure 4-5 As shown, the base 10 is provided with a stacking seat 61, the stacking seat 61 is provided with a vertically extending lifting rail 62, the lifting rail 62 is provided with a stacking movable frame 63, the stacking platform 20 is provided at the upper end of the stacking movable frame 63, the base 10 is provided with a stacking lifting motor 60 for driving the stacking movable frame 63 to move up and down along the lifting rail 62, the output end of the stacking lifting motor 60 is connected with a stacking lifting screw rod 64, and the stacking lifting screw rod 64 is threadedly connected with the stacking movable frame 63. The stacking platform 20 is provided with a clamping claw groove 21, the stacking movable frame 63 is provided with a filling block 22 for filling the clamping claw groove 21 during stacking, and a filling driving member 24 for driving the filling block 22 to move up and down. The filling driving member 24 is a lifting cylinder, the output end of the lifting cylinder is connected with a filling movable seat 23, and the filling block 22 is installed on the filling movable seat 23. By providing the filling block 22, the clamping groove 21 can be filled during lamination to avoid the problem of wrinkling of the first layer of lamination. It should be understood that the cutting drive mechanism 42 and the filling drive member 24 in the utility model can also be replaced by other drive mechanisms besides the cylinder.

[0048] like Figure 6-8As shown, two parallel first slide rails 81 and a claw lifting motor 80 that drives the first slide rails 81 to move up and down are provided below the stacking platform 20. The claw lifting motor 80 drives the first slide rails 81 to move up and down through the claw lifting screw rod 82. Each of the first slide rails 81 is provided with two groups of claw assemblies 50 for fixing the battery cell on the stacking platform 20. An opening and closing motor 70 is provided on the base 10. The output end of the opening and closing motor 70 is connected with a positive and negative screw rod 71. The positive and negative screw rod 71 is threaded with power connecting blocks 72 corresponding to the two groups of claw assemblies 50 respectively. A cam follower 73 is provided on the power connecting block 72. A follower connecting plate 51 is provided on the follower connecting plate 51. A follower groove 511 that cooperates with the cam follower 73 is provided on the follower connecting plate 51. The follower groove 511 extends vertically. The opening and closing motor 70 controls the two groups of claw assemblies 50 to slide and open and close along the first slide rail 81 through the positive and negative screw rods 71.

[0049] Specifically, a second slide rail 74 parallel to the first slide rail 81 is fixedly provided on the base 10 beside the first slide rail 81, and the power connection block 72 is slidably connected to the second slide rail 74. A slide rail mounting seat 12 is fixedly provided on the base 10, and a vertically arranged third slide rail 13 is provided on the slide rail mounting seat 12, and a vertically movable cross plate 84 is slidably provided on the third slide rail 13. The first slide rail 81 is arranged on the vertically movable cross plate 84, and a vertically movable seat 83 is threadedly connected to the pressure claw lifting screw rod 82, and the vertically movable cross plate 84 is fixedly connected to the vertically movable seat 83. In the utility model, the vertically movable seat 83 is located below the middle of the first slide rail 81, and the pressure claw lifting motor 80 drives the pressure claw lifting screw rod 82 to rotate through the first synchronous belt. The second slide rail 74 is fixedly connected to the slide rail mounting seat 12.

[0050] Specifically, two ends of the vertically movable horizontal plate 84 are provided with return springs 85 which make the two groups of pressure claw assemblies 50 on the first slide rail 81 always have a tendency to separate, one end of the return spring 85 is connected to the vertically movable horizontal plate 84, and the other end is connected to the follower connecting plate 51. The pressure claw assembly 50 includes an opening and closing slide 52 which is slidably connected to the first slide rail 81, a pressure claw mounting seat 53 arranged on the opening and closing slide 52, and a pressure claw 54 arranged on the pressure claw mounting seat 53, and the follower connecting plate 51 is fixedly connected to the opening and closing slide 52. A vertically extending downward pressure slide 55 is provided on the opening and closing slide 52, and the pressure claw 54 mounting seat 53 is slidably connected to the downward pressure slide 55. A buffer spring 56 which makes the pressure claw 54 always have a tendency to move downward is provided between the opening and closing slide 52 and the pressure claw 54 mounting seat 53. The return spring 85 and the buffer spring 56 are both tension springs. By providing the buffer spring 56 , a certain buffer is maintained when the pressing claw 54 is pressed down, thereby preventing a hard collision with the laminated battery core.

[0051] The utility model provides a cam follower 73 on the power connection block 72, and a follower groove 511 matched with the cam follower 73 on the follower connecting plate 51. When working, the opening and closing motor 70 controls the two power connection blocks 72 to move away from or approach each other through the forward and reverse screw rods 71 ​​at the same time, and the cam follower 73 on the power connection block 72 extends into the follower groove 511 of the follower connecting plate 51, thereby driving the two groups of pressure claws 54 components 50 to perform opening and closing movements on the first slide rail 81, thereby realizing the horizontal clamping or opening of the laminated battery core; the pressure claw 54 lifting motor 80 drives the first slide rail 81 to move up and down through the pressure claw 54 lifting screw rod 82, and the two groups of pressure claws 54 components 50 on the first slide rail 81 move up and down with the first slide rail 81 at the same time. Since the follower groove 511 extends vertically, the cam follower 73 moves up and down in the follower groove 511 relative to the follower connecting plate 51, thereby realizing the vertical pressing or opening of the battery core.

[0052] To sum up, the utility model adopts an opening and closing motor to control the opening and closing of the pressure claw assembly, and controls the lifting and lowering of the pressure claw assembly through a pressure claw lifting motor. Compared with the traditional structure, it is more conducive to improving the machine adjustment efficiency during production, improving the consistency of the response of the pressure claw assembly, and improving the stacking efficiency and stacking quality.

[0053] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Therefore, any modification, equivalent replacement, improvement, etc. made to the above embodiment based on the technical practice of the present invention still falls within the scope of the technical solution of the present invention.

Claims

1. A battery cell stacking platform, comprising a base, on which a stacking platform that can be raised and lowered is provided, characterized in that: A first slide rail arranged in parallel and a claw lifting motor that drives the first slide rail to move up and down are provided below the stacking table, the claw lifting motor drives the first slide rail to move up and down through the claw lifting screw, each of the first slide rails is provided with two groups of claw assemblies for fixing the battery cell on the stacking table, an opening and closing motor is provided on the base, the output end of the opening and closing motor is connected with a forward and reverse screw rod, the forward and reverse screw rods are threaded with power connecting blocks corresponding to the two groups of claw assemblies respectively, a cam follower is provided on the power connecting block, a follower connecting plate is provided on the claw assembly, a follower groove cooperating with the cam follower is provided on the follower connecting plate, the follower groove extends vertically, and the opening and closing motor controls the two groups of claw assemblies to slide and open and close along the first slide rail through the forward and reverse screw rods.

2. A battery core stacking platform according to claim 1, characterized in that: A second slide rail parallel to the first slide rail is fixedly provided on the base beside the first slide rail, and the power connection block is slidably connected to the second slide rail.

3. A battery core stacking platform according to claim 2, characterized in that: A slide rail mounting seat is fixedly provided on the base, a vertically arranged third slide rail is provided on the slide rail mounting seat, a vertically arranged cross plate is slidably provided on the third slide rail, the first slide rail is arranged on the vertically arranged cross plate, a vertically movable seat is threadedly connected on the pressure claw lifting screw rod, and the vertically movable cross plate is fixedly connected to the vertically movable seat.

4. A battery core stacking platform according to claim 3, characterized in that: The two ends of the vertically movable transverse plate are provided with return springs which make the two groups of pressure claw assemblies on the first slide rail always have a tendency to separate. One end of the return spring is connected to the vertically movable transverse plate, and the other end is connected to the follower connecting plate.

5. The battery cell stacking platform according to claim 1, characterized in that: The pressure claw assembly comprises an opening and closing slide seat slidably connected to the first slide rail, a pressure claw mounting seat arranged on the opening and closing slide seat, and a pressure claw arranged on the pressure claw mounting seat, and the follower connecting plate is fixedly connected to the opening and closing slide seat.

6. A battery cell stacking platform according to claim 5, characterized in that: A vertically extending downward pressing slide rail is arranged on the opening and closing slide seat, the pressing claw mounting seat is slidably connected with the downward pressing slide rail, and a buffer spring is arranged between the opening and closing slide seat and the pressing claw mounting seat to make the pressing claw always have a tendency to move downward.

7. The battery cell stacking platform according to claim 1, characterized in that: The base is provided with a stack mounting seat, the stack mounting seat is provided with a vertically extending lifting slide rail, the lifting slide rail is slidably provided with a stack movable frame, the stacking platform is arranged at the upper end of the stack movable frame, the base is provided with a stack lifting motor for driving the stack movable frame to move up and down along the lifting slide rail, the output end of the stack lifting motor is connected to a stack lifting screw rod, and the stack lifting screw rod is threadedly connected to the stack movable frame.

8. The battery cell stacking platform according to claim 7, characterized in that: The stacking table is provided with a clamping claw groove, the stacking movable frame is provided with a filling block for filling the clamping claw groove during stacking and a filling driving member for driving the filling block to move up and down, the filling driving member is a lifting cylinder, the output end of the lifting cylinder is connected to a filling movable seat, and the filling block is installed on the filling movable seat.

9. The battery cell stacking platform according to claim 1, characterized in that: A diaphragm correction mechanism and a diaphragm cutting mechanism are provided on opposite sides of the stacking table. The diaphragm correction mechanism includes a correction suction plate and a correction motor that drives the correction suction plate to move horizontally. The output end of the correction motor is connected to a correction screw rod. The correction motor drives the correction suction plate to move through the correction screw rod. A plurality of suction holes are provided on the upper surface of the correction suction plate. The diaphragm cutting mechanism includes a heating wire and a cutting drive mechanism that drives the heating wire to move up and down.

10. The battery cell stacking platform according to claim 1, characterized in that: It also includes a stacking plate traverse module for driving the base to move horizontally.

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