Battery cell lamination discharging mechanism and cutting and stacking integrated machine

Abstract

The utility model discloses a battery cell lamination discharging mechanism and a cutting and stacking all-in-one machine. The battery cell lamination discharging mechanism comprises a base, a rack, a vertical mounting large plate, a positive pole piece conveying belt, a negative pole piece conveying belt, a lamination mechanism, a lifting lamination table, a cutter mechanism, a battery cell discharging manipulator and a tail roll mechanism, the rack is arranged on the base, the vertical installation large plate is vertically arranged on one side of the rack, the positive pole piece conveying belt and the negative pole piece conveying belt are arranged on the two sides of the rack respectively, the lamination mechanism is installed on the vertical installation large plate in a wall-mounted mode, and the lifting lamination table, the cutter mechanism, the battery cell discharging mechanical arm and the tail roll mechanism are sequentially arranged on the base. And the motor is positioned below the lamination mechanism and the negative pole piece conveying belt. According to the utility model, after the diaphragm is cut off, the lifting lamination table and the battery cell blanking manipulator can start to operate respectively, so that the auxiliary time is shortened, and the equipment utilization rate is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of battery manufacturing equipment, in particular to a core stacking and blanking mechanism and a cutting and stacking integrated machine. Background Technique

[0002] In the lithium battery manufacturing process, the core forming equipment is undoubtedly a relatively key link. The existing core forming equipment mainly has two processes: winding and stacking. Compared with winding, the stacking process improves the energy density and safety of the core and is the mainstream of the future core manufacturing method. However, the disadvantage is that the speed needs to be improved. Therefore, improving the efficiency and rhythm of the stacking equipment has become the common pursuit in the industry. The main function of the existing cutting and stacking integrated equipment is to cross-stack the positive and negative electrode sheets and the separator transported by the conveyor belt after being cut at the front end on the stacking table to form a core. After stacking to the specified number of layers, the core still connected to the separator is clamped by the manipulator above, pulled out a certain distance from the stacking table and clamped by the gripper at the tail winding station. Then, the cutter beside the stacking table cuts off the separator, and the tail winding mechanism drives the core to start rotating, winds the remaining section of the separator around the core for one week, and then transfers it to the gluing station by the manipulator. After the manipulator exits the range of the electrode sheet handling on the stacking table, the stacking table starts a new round of stacking.

[0003] In the existing stacking table layout, the stacker is horizontal, that is, the components are installed on a horizontal large plate. The core blanking and tail winding are arranged at the picking height, and the height of the core blanking manipulator is basically the same as that of the stacking table handling manipulator. Therefore, during the reciprocating stacking process of the stacking table, the core blanking manipulator needs to completely exit the action space of the stacking table and move to the outer end where there is no interference in movement to wait. One drawback of this method is that when each stacked core needs to be blanked and transferred, the stacking table must wait for the core to complete the tail winding. After the core manipulator leaves the stacking table area, the stacking table can start a new round of stacking. In this way, the invalid waiting time of the stacking table is too long, which greatly affects the overall efficiency of the machine. Summary of the Utility Model

[0004] The main purpose of the utility model is to provide a core stacking and blanking mechanism and a cutting and stacking integrated machine, aiming to reduce the auxiliary time and improve the time utilization rate of the stacking table.

[0005] To achieve the above purpose, the utility model provides a core stacking and blanking mechanism, including: a base, a frame, a vertical installation large plate, a positive electrode sheet conveyor belt, a negative electrode sheet conveyor belt, a stacking mechanism, a lifting stacking table, a cutting knife mechanism, a core blanking manipulator and a tail winding mechanism;

[0006] The frame is arranged on the base. The vertical mounting large plate is vertically arranged on one side of the frame. The positive electrode sheet conveyor belt and the negative electrode sheet conveyor belt are respectively arranged on both sides of the frame. The lamination mechanism is wall-mounted on the vertical mounting large plate. The lifting lamination table, the cutting mechanism, the battery cell blanking manipulator and the tail roll mechanism are sequentially arranged on the base and are located below the lamination mechanism and the negative electrode sheet conveyor belt.

[0007] A further technical solution of the present utility model is that the cutting mechanism includes a bracket and a cutting knife arranged on the bracket. The bracket is provided with a through hole for the battery cell blanking manipulator to pass through.

[0008] A further technical solution of the present utility model is that it further includes a tail roll station jaw arranged on the base near the tail roll mechanism.

[0009] A further technical solution of the present utility model is that it further includes a battery cell transfer manipulator, a gluing station and a hot pressing assembly which are sequentially arranged on the base at the rear end of the tail roll mechanism.

[0010] A further technical solution of the present utility model is that the lamination mechanism includes a positive electrode sheet rotating platform, a positive electrode sheet pre-positioning platform, a negative electrode sheet pre-positioning platform and a negative electrode sheet rotating platform which are sequentially arranged on the vertical mounting large plate between the positive electrode sheet conveyor belt and the negative electrode sheet conveyor belt. The lifting lamination table is located between the positive electrode sheet pre-positioning platform and the negative electrode sheet pre-positioning platform. The distances between the positive electrode sheet conveyor belt, the positive electrode sheet rotating platform, the positive electrode sheet pre-positioning platform, the lifting lamination table, the negative electrode sheet pre-positioning platform, the negative electrode sheet rotating platform and the negative electrode sheet conveyor belt are the same.

[0011] A further technical solution of the present utility model is that above the positive electrode sheet conveyor belt, the positive electrode sheet rotating platform, the positive electrode sheet pre-positioning platform, the negative electrode sheet pre-positioning platform, the negative electrode sheet rotating platform and the negative electrode sheet conveyor belt, there are three movers arranged at equal intervals in sequence and capable of synchronous reciprocating motion. A diaphragm reciprocating swing roller is arranged at the middle position of the middle mover among the three movers. Two electrode sheet transfer manipulators are arranged on each mover. The distances between every two adjacent electrode sheet transfer manipulators on the three movers are the same.

[0012] A further technical solution of the present utility model is that it further includes a driving mechanism for driving the movers to move.

[0013] A further technical solution of the present utility model is that the driving mechanism includes a linear motor arranged on the frame, and the linear motor is connected to the three movers.

[0014] A further technical solution of the present utility model is that the driving mechanism includes a lead screw linear module or a synchronous belt arranged on the vertical mounting plate, and the lead screw linear module or the synchronous belt is connected to the three movers.

[0015] In the existing cell stacking and blanking mechanism, since the cell blanking manipulator is at the same horizontal height as the electrode sheet transfer manipulator, the movement of each handling component must wait for the cell blanking manipulator to exit the movement space before it can proceed, and the cell blanking manipulator must wait until the tail roll is completed before it can move to the outside of the rack. Therefore, the stacking table and the tail roll cannot be carried out simultaneously. However, the present utility model solves this time conflict through the above technical solution, and after the diaphragm is cut, the two can start running respectively, reducing the auxiliary time (the stacking auxiliary time refers to the time when the stacking table starts to stack the next cell after completing one cell, and this time belongs to the equipment loss time, the shorter the better), and improving the equipment operation rate.

[0016] To achieve the above object, the present utility model also proposes a cutting and stacking integrated machine, and the cutting and stacking integrated machine includes the cell stacking and blanking mechanism as described above. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the technical solutions in the embodiments of the present utility model or the prior art, the following will briefly introduce the drawings required for the description of the embodiments or the prior art. Obviously, the following drawings are only some embodiments of the present utility model. For those of ordinary skill in the art, without creative efforts, other drawings can be obtained based on the structures shown in these drawings.

[0018] Figure 1 is the overall structural schematic diagram of the cell stacking and blanking mechanism of the present utility model;

[0019] Figure 2 is the front view of the cell stacking and blanking mechanism of the present utility model.

[0020] Explanation of the reference numerals in the drawings:

[0021] Base 1; Frame 2; Vertical mounting large plate 3; Positive electrode sheet conveyor belt 4; Negative electrode sheet conveyor belt 5; Lifting stacking table 6; Cutting mechanism 7; Cell blanking manipulator 8; Tail roll mechanism 9; Tail roll station gripper 10; Cell transfer manipulator 11; Glue application station 12; Hot pressing assembly 13; Positive electrode sheet rotating platform 14; Positive electrode sheet pre-positioning platform 15; Negative electrode sheet pre-positioning platform 16; Negative electrode sheet rotating platform 17; Mover 18; Diaphragm reciprocating swing roller 19; Electrode sheet transfer manipulator 20.

[0022] The realization, functional features and advantages of the object of the present utility model will be further described with reference to the embodiments and the drawings. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0023] Next, in combination with the accompanying drawings in the embodiments of the present utility model, the technical solutions in the embodiments of the present utility model will be clearly and completely described. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present utility model.

[0024] Please refer to Figure 1 and Figure 2 As shown in [drawings not specified in the original], the present utility model provides a cell stacking and blanking mechanism. The preferred embodiment of the cell stacking and blanking mechanism of the present utility model includes a base 1, a frame 2, a vertical mounting large plate 3, a positive electrode sheet conveyor belt 4, a negative electrode sheet conveyor belt 5, a stacking mechanism, a lifting stacking table 6, a cutting knife mechanism 7, a cell blanking manipulator 8, and a tail roll mechanism 9.

[0025] The frame 2 is arranged on the base 1. The vertical mounting large plate 3 is vertically arranged on one side of the frame 2. The positive electrode sheet conveyor belt 4 and the negative electrode sheet conveyor belt 5 are respectively arranged on both sides of the frame 2. The stacking mechanism is wall-mounted on the vertical mounting large plate 3. The lifting stacking table 6, the cutting knife mechanism 7, the cell blanking manipulator 8, and the tail roll mechanism 9 are sequentially arranged on the base 1 and are located below the stacking mechanism and the negative electrode sheet conveyor belt 5 to stagger the heights.

[0026] In the present utility model, the stacking mechanism is wall-mounted on the vertical mounting large plate 3, and the cell blanking manipulator 8 and the tail roll mechanism 9 are arranged on the base 1 and are located below the stacking mechanism and the negative electrode sheet conveyor belt 5, thereby solving the problem of space interference. The lifting stacking table 6 is a liftable structure. After stacking one cell above, it descends in height to dock with the cell blanking manipulator 8. After the diaphragm is cut, the lifting stacking table 6 can rise back to its original position to start stacking again, while the cell continues the tail roll process, and the work is carried out simultaneously above and below without waiting.

[0027] Among them, the cutting knife mechanism 7 includes a bracket and a cutting knife arranged on the bracket. The bracket is provided with a through hole for the cell blanking manipulator 8 to pass through.

[0028] In this embodiment, the cell stacking and blanking mechanism further includes a tail roll station jaw 10 arranged on the base 1 near the tail roll mechanism 9.

[0029] In this embodiment, the cell stacking and blanking mechanism further includes a cell transfer manipulator 11, a gluing station 12, and a hot pressing assembly 13 that are sequentially arranged on the base 1 at the rear end of the tail roll mechanism 9.

[0030] In this embodiment, the laminating mechanism includes a positive electrode tab rotating platform 14, a positive electrode tab pre-positioning platform 15, a negative electrode tab pre-positioning platform 16, and a negative electrode tab rotating platform 17 that are sequentially arranged between a positive electrode tab conveyor belt 4 and a negative electrode tab conveyor belt 5 on a vertical installation large board 3. A lifting laminating table 6 is located between the positive electrode tab pre-positioning platform 15 and the negative electrode tab pre-positioning platform 16. The distances between the positive electrode tab conveyor belt 4, the positive electrode tab rotating platform 14, the positive electrode tab pre-positioning platform 15, the lifting laminating table 6, the negative electrode tab pre-positioning platform 16, the negative electrode tab rotating platform 17, and the negative electrode tab conveyor belt 5 are the same.

[0031] Above the positive electrode tab conveyor belt 4, the positive electrode tab rotating platform 14, the positive electrode tab pre-positioning platform 15, the negative electrode tab pre-positioning platform 16, the negative electrode tab rotating platform 17, and the negative electrode tab conveyor belt 5, there are three movers 18 that are arranged equidistantly in sequence and can move synchronously and reciprocally. A diaphragm reciprocating swing roller 19 is arranged at the middle position of the middle mover 18 among the three movers 18. Two tab transfer manipulators 20 are arranged on each mover 18. The distances between every two adjacent tab transfer manipulators 20 on the three movers 18 are the same. Each tab transfer manipulator 20 is provided with a suction cup assembly.

[0032] In this embodiment, the cell laminating and blanking mechanism further includes a driving mechanism for driving the mover 18 to move.

[0033] Among them, the driving mechanism includes a linear motor arranged on the frame 2, and the linear motor is connected to the three movers 18.

[0034] Alternatively, the driving mechanism includes a lead screw linear module or a synchronous belt arranged on a vertical installation board, and the lead screw linear module or the synchronous belt is connected to the three movers 18.

[0035] The following will introduce the action process of the cell laminating and blanking mechanism of the present invention in detail.

[0036] At the front end of the equipment, the positive electrode tabs and the negative electrode tabs are cut into pieces one by one and conveyed by the positive electrode tab conveyor belt 4 and the negative electrode tab conveyor belt 5, as Figure 1 and Figure 2Taking the perspective direction as an example, the positive electrode plate is on the left side and the negative electrode plate is on the right side; the manipulator of the mover 18 is equipped with a suction cup assembly. All the movers 18 can reciprocate horizontally from left to right. When reaching the left limit position, the left suction cup assembly on the first mover 18 on the positive electrode side moves downward, sucks the positive electrode plate on the positive electrode plate conveyor belt 4 directly below, and then lifts it up. Then the mover 18 moves to the right limit position, and the left suction cup assembly on the first mover 18 transfers the positive electrode plate to the positive electrode plate rotating platform 14. During this process, the positive electrode plate rotating platform 14 rotates 90°. The diaphragm reciprocating swing roller 19 moves to the right and covers the diaphragm on the previous electrode plate. The right suction cup assembly on the first mover 18 transfers the positive electrode plate on the positive electrode plate rotating platform 14 to the positive electrode plate pre-positioning platform 15. The left suction cup assembly of the second mover 18 transfers the positive electrode plate on the positive electrode plate pre-positioning platform 15 to the lifting and stacking table 6 to press the diaphragm. The working process on the negative electrode plate side is similar and will not be elaborated here. In this way, it alternates, and the positive electrode plate, the negative electrode plate and the diaphragm are stacked alternately. After stacking to the specified number of layers, the lifting and stacking table 6 descends to the height for taking the battery cell below. The battery cell unloading manipulator 8 on standby on the lower right side moves to the left to clamp the battery cell, pulls the lifting and stacking table 6 a certain distance and hands it over to the tail roll station jaw 10 for clamping. Then the cutter beside the lifting and stacking table 6 cuts the diaphragm. The lifting and stacking table 6 rises and returns to its original position to start stacking again. At the same time, the tail roll mechanism 9 drives the battery cell to start rotating, winds the remaining section of the diaphragm around the battery cell 1 to 2 times, and then the battery cell transfer manipulator 11 transfers it to the taping station 12 to tape the battery cell to prevent it from loosening. Then the hot press transfer manipulator transfers the taped battery cell to the hot press assembly 13. After hot pressing, the stacking process is completed, and the hot press transfer manipulator transfers to the unloading belt.

[0037] In the battery cell stacking and unloading mechanism in the prior art, since the battery cell unloading manipulator 8 is at the same horizontal height as the electrode plate transfer manipulator 20, the movement of each handling component must wait for the battery cell unloading manipulator 8 to withdraw from the movement space before it can proceed. And the battery cell unloading manipulator 8 must wait until the tail roll is completed before it can move to the outside of the frame 2. Therefore, the stacking table and the tail roll cannot be carried out simultaneously. And the present invention solves this time conflict through the above technical solution. After cutting the diaphragm, the two can start their respective operations, reducing the auxiliary time (the stacking auxiliary time refers to the time for the stacking table to start stacking the next battery cell after completing one battery cell. This time belongs to the equipment loss time, and the shorter the better), and improving the equipment operation rate.

[0038] To achieve the above object, the present invention also proposes a cutting and stacking integrated machine, and the cutting and stacking integrated machine includes the battery cell stacking and unloading mechanism as described above. The structure and working principle of the battery cell stacking and unloading mechanism have been elaborated in detail above and will not be elaborated here.

[0039] The above are only the preferred embodiments of the present utility model, and do not limit the patent scope of the present utility model accordingly. Any equivalent structural transformation made under the concept of the present utility model by using the content of the specification and drawings of the present utility model, or any direct / indirect application in other related technical fields shall be included within the patent protection scope of the present utility model.

Claims

1. A cell stacking and blanking mechanism, characterized in that, Comprising: a base, a frame, a vertically installed large plate, a positive electrode sheet conveyor belt, a negative electrode sheet conveyor belt, a laminating mechanism, a lifting laminating table, a cutting mechanism, a battery cell blanking manipulator, and a tail winding mechanism; The frame is disposed on the base, the vertically installed large plate is vertically disposed on one side of the frame, the positive electrode sheet conveyor belt and the negative electrode sheet conveyor belt are respectively disposed on both sides of the frame, the laminating mechanism is wall-mounted on the vertically installed large plate, and the lifting laminating table, the cutting mechanism, the battery cell blanking manipulator, and the tail winding mechanism are sequentially disposed on the base and are located below the laminating mechanism and the negative electrode sheet conveyor belt.

2. The cell lamination blanking mechanism according to claim 1, characterized in that, The cutting mechanism includes a bracket and a cutting knife disposed on the bracket, and the bracket is provided with a through hole for the battery cell blanking manipulator to pass through.

3. The cell laminating and blanking mechanism according to claim 1, wherein It further includes a tail winding station gripper disposed on the base near the tail winding mechanism.

4. The cell laminating and blanking mechanism according to claim 3, characterized in that, It further includes a battery cell transfer manipulator, a gluing station, and a hot pressing assembly sequentially disposed on the base at the rear end of the tail winding mechanism.

5. The cell stacking and blanking mechanism according to claim 1, wherein, The laminating mechanism includes a positive electrode sheet rotating platform, a positive electrode sheet pre-positioning platform, a negative electrode sheet pre-positioning platform, and a negative electrode sheet rotating platform sequentially disposed between the positive electrode sheet conveyor belt and the negative electrode sheet conveyor belt on the vertically installed large plate. The lifting laminating table is located between the positive electrode sheet pre-positioning platform and the negative electrode sheet pre-positioning platform. The distances between the positive electrode sheet conveyor belt, the positive electrode sheet rotating platform, the positive electrode sheet pre-positioning platform, the lifting laminating table, the negative electrode sheet pre-positioning platform, the negative electrode sheet rotating platform, and the negative electrode sheet conveyor belt are the same.

6. The core lamination blanking mechanism according to claim 5, wherein, Above the positive electrode sheet conveyor belt, the positive electrode sheet rotating platform, the positive electrode sheet pre-positioning platform, the negative electrode sheet pre-positioning platform, the negative electrode sheet rotating platform, and the negative electrode sheet conveyor belt, there are three movers arranged equidistantly in sequence and capable of synchronous reciprocating motion. A diaphragm reciprocating swing roller is disposed at the middle position of the middle mover among the three movers. Two electrode sheet transfer manipulators are disposed on each mover, and the distances between every two adjacent electrode sheet transfer manipulators on the three movers are the same.

7. The cell stacking and blanking mechanism according to claim 6, characterized in that, It further includes a driving mechanism for driving the movers to move.

8. The cell stacking and blanking mechanism according to claim 7, wherein The driving mechanism includes a linear motor disposed on the frame, and the linear motor is connected to the three movers.

9. A cutting and folding integrated machine, characterized in that, The cutting and laminating machine includes the battery cell laminating and blanking mechanism according to any one of claims 1 to 8.

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