CN108306055B - Lithium battery cell one shot forming lamination machine - Google Patents

Abstract

The application discloses a one-step forming lamination machine for lithium battery cells, which comprises a frame, a diaphragm unreeling mechanism, a diaphragm winding mechanism, a cell clamping mechanism, a diaphragm clamping mechanism, a connecting plate, a pole piece conveying mechanism, a lamination mechanism, a transmission mechanism and a diaphragm cutting mechanism, wherein the frame is provided with a plurality of grooves; the lamination mechanism is used for carrying out one-time lamination assembly on the positive and negative pole pieces and the diaphragm; the pole piece conveying mechanism is used for conveying the positive pole piece and the negative pole piece; the diaphragm unreeling mechanism is used for placing the diaphragm between the positive pole piece and the negative pole piece; the transmission mechanism is used for providing power for the pole piece conveying mechanism; the diaphragm winding mechanism is used for performing diaphragm coating on the battery core formed by the lamination mechanism; the battery core clamping mechanism is used for clamping the battery core before and after the diaphragm is coated; the diaphragm cutting mechanism is used for cutting off the diaphragm after the diaphragm coating is completed; the diaphragm clamping mechanism is used for conveying the diaphragm to a clamp at the bottom of the lamination mechanism. The lamination machine realizes the one-time lamination molding of the positive and negative pole pieces, and greatly improves the lamination efficiency.

Description

A lithium battery cell one-time forming and stacking machine

Technical field

The invention relates to the field of lithium battery manufacturing, specifically a lithium battery cell one-time forming and stacking machine.

Background technique

The internal structure of a lithium battery includes positive electrode plates and negative electrode plates stacked in sequence, and the positive and negative electrode plates are separated by a separator. The lamination machine is mainly used in the lithium battery cell lamination process. Its lamination methods are divided into two types: rotary type and reciprocating type. Rotary lamination is characterized by being used in small battery laminations, while reciprocating lamination is characterized by being used in large battery laminations. The lamination machine generally consists of the following mechanisms: unloading mechanism, positive electrode material box, negative electrode material box, positive electrode secondary positioning mechanism, negative electrode secondary positioning mechanism, positive electrode feeding mechanism, negative electrode feeding mechanism, lamination table, glue application mechanism, lower material organization. The working principle of the currently commonly used lithium battery cell stacking machine is to first transfer the positive and negative electrode sheets into the material box. The left and right manipulators of the equipment use suction cups to pick up the positive and negative electrode sheets from the positive and negative electrode boxes and transport them to the position. On the workbench, after secondary positioning, the suction cups are again used to alternately transport the positive and negative electrode sheets to the stacking table. At the same time, the separator is actively unrolled, and the stacking table drives the separator to reciprocate left and right to form a Z-shaped stack. The equipment operates in this cycle. Realize lamination assembly. When the pole group reaches the set number, the separator is wrapped. Finally, a cutter cuts the separator to assemble the next pole group. At the same time, the packaged pole group is pasted with tape to form a complete battery core. .

The application number is 201611243940.9, which discloses a stacking machine. The loading module of the stacking machine adopts a rotating station, which divides the operations completed at one station in the prior art into multiple stations, improving the efficiency of patching. , but its rotating station is limited, and lamination needs to be completed multiple times. It is impossible to achieve one-time lamination of pole pieces. Compared with traditional lamination machines, the lamination efficiency is not greatly improved.

At present, the traditional lamination machine requires multiple times of patching of positive and negative electrode plates, which makes the lithium battery lamination processing efficiency inefficient and the cost of the equipment is high. In addition, the lamination claws can easily scratch the electrode plates during the lamination process. This results in defective pole pieces and low reliability. Therefore, it has become an urgent problem to provide a high-efficiency, low-cost, and high-reliability battery cell one-time forming and stacking machine.

Contents of the invention

In view of the shortcomings of the existing technology, the technical problem to be solved by the present invention is to provide a lithium battery cell one-time forming and stacking machine.

The technical solution of the present invention to solve the technical problem is to provide a lithium battery cell one-time forming laminating machine, which includes a frame, a diaphragm unwinding mechanism, a diaphragm winding mechanism, a battery core clamping mechanism, a diaphragm clamping mechanism and Connecting plate; It is characterized in that the stacking machine also includes a pole piece conveying mechanism, a stacking mechanism, a transmission mechanism and a diaphragm cutting mechanism;

The lamination mechanism is installed in the middle position of the frame and is used for one-time lamination assembly of positive and negative electrode plates and separators;

The pole piece conveying mechanisms are two groups of identical structures, installed on the frame, respectively located on both sides of the stacking mechanism and arranged symmetrically with respect to the stacking mechanism, for transporting positive pole pieces and negative pole pieces;

The diaphragm unwinding mechanism is installed on the top of the frame and is used to place the diaphragm between the positive and negative electrode plates;

The transmission mechanism is installed on the frame and used to provide power for the pole piece conveying mechanism;

The diaphragm winding mechanism is installed on the frame and is used to wrap the cells formed by the lamination mechanism with diaphragms;

The battery core clamping mechanism is installed on the frame and is used to clamp the battery core before and after the separator coating;

The diaphragm cutting mechanism is installed on the frame and is used to cut off the diaphragm after the diaphragm coating is completed;

The diaphragm clamping mechanism is installed on the frame; the diaphragm clamping mechanism is two groups with the same structure, symmetrically installed on both sides of the battery core clamping mechanism, and the two diaphragm clamping mechanisms respectively correspond to the edges of the diaphragm, with to transport the diaphragm to the clamp at the bottom of the stacking mechanism;

The connecting plates are respectively connected to the pole piece conveying mechanism and the transmission mechanism.

The pole piece conveying mechanism includes several pole piece conveying devices, which are arranged vertically and evenly; each pole piece conveying device includes a pole piece conveying mechanism frame, a bottomless pole piece storage box, a pole piece size control board, Vacuum conveying plate, groove wheel, roller, pole piece conveying bearing and vacuum suction cup; one end of the frame of the pole piece conveying mechanism is installed on the frame, and the other end is connected to the pull-down side plate of the stacking mechanism; the bottomless The pole piece storage box is fixed on the frame of the pole piece conveying mechanism; the bottomless pole piece storage box is a square box with semicircular notches at both ends and no bottom surface, and there are mounting plates on both sides of the bottom; the pole piece size control board There are two L-shaped plates, which are installed on the mounting plates on both sides of the bottom of the bottomless pole piece storage box. There are long round holes on the pole piece size control plate, which are used to support the positive and negative pole pieces and control the storage of different sizes. The pole piece; the vacuum conveying plate is connected to the transmission mechanism through the connecting plate; the vacuum conveying plate has a vacuum suction cup for adsorbing the pole piece; there is a gap between the vacuum conveying plate and the pole piece size control plate; the groove The wheels are installed at both ends of the inner side of the pole piece conveying mechanism frame; the rollers are installed on the pole piece conveying mechanism frame through pole piece conveying bearings, located on the upper and lower surfaces of the vacuum conveying plate and in contact with the vacuum conveying plate;

The lamination mechanism includes a lamination mechanism base frame, a lamination table, a pull-down side plate, a telescopic frame device, a clamp, an upper fixed plate, a compression cylinder, a compression cylinder mounting plate, a compression cylinder push plate, a power component and a lower Pull rod; the bottom frame of the lamination mechanism is fixed on the frame; the lamination table is installed on the bottom frame of the lamination mechanism; the lamination table has a rectangular slot; the pull-down side plates are installed on both sides of the bottom frame of the lamination mechanism. On the side, there are slide rails on the inside of the pull-down side panel; the two ends of the upper fixed plate are installed on the pull-down side panel; the telescopic rack device is installed in the slide rail of the pull-down side panel; the clip is installed on the pull-down side panel from top to bottom. on the connecting shaft of the telescopic rack device; the center of the clip is flush with the vacuum conveying plate; the power component is fixed on the frame; the two ends of the lower pull rod are connected to the sliding shafts on both sides of the lower part of the telescopic rack device, and the middle part is connected to the power The piston rods of the components are connected; the compression cylinder mounting plate is installed on the connecting shaft at the top of the telescopic rack device; the compression cylinder is installed on the compression cylinder mounting plate; the compression cylinder push plate is installed on the compression cylinder on the piston rod;

The transmission mechanism includes a transmission mechanism frame, a stepper motor, a stepper motor support plate, a transmission mechanism bearing, a bearing seat, a gear, a gear rack, a linear guide rail and a transmission mechanism slider; the transmission mechanism frame is installed on the machine on the frame; the stepper motor support plate and the bearing seat are fixed on the transmission mechanism frame; the transmission mechanism bearing is installed in the bearing seat; the stepper motor is installed on the stepper motor support plate, and the stepper motor The rotating shaft passes through the inner ring of the transmission mechanism bearing, and a gear is installed at the end; the gear is fixed through the gear end cover and sleeve; the two sets of transmission mechanism slide blocks are respectively fixed on the upper and lower sides of the transmission mechanism frame; the linear guide rail is two Each gear rack is mounted on its respective transmission mechanism slide block and can slide relative to the transmission mechanism slide block; the gear racks are two, fixed on their respective linear guide rails, and meshed with the upper and lower sides of the gear respectively; the two gear racks One end of the rack and two linear guide rails is installed on the connecting plates on both sides;

The diaphragm cutting mechanism includes a guide rail mounting plate, a guide rail, an upper blade mounting plate, an upper blade, a lower blade, a cutting mechanism slide block and a cutting mechanism cylinder; the guide rail mounting plate is fixed on the frame; the guide rail is installed on the guide rail mounting plate on; the upper blade mounting plate is fixed on the guide rail mounting plate; the cutting mechanism slider is installed in the guide rail; the upper blade and the lower blade are respectively installed on the upper blade mounting plate and the cutting mechanism slider; the cutting The output end of the mechanism cylinder is connected with the cutting mechanism slide block.

Compared with the prior art, the beneficial effects of the present invention are:

1) The traditional laminating machine is a reciprocating laminating machine, which requires multiple placement of positive and negative electrodes. This stacking machine uses a pole piece conveying mechanism, a stacking mechanism and a transmission mechanism to cooperate with each other to realize the one-time stacking forming of positive and negative pole pieces, greatly improving the stacking efficiency.

2) The pole piece transportation mechanism uses vacuum suction cups to adsorb the pole pieces, ensuring that the pole pieces will not be crushed or damaged during transportation and improving the reliability of the pole pieces.

3) The bottomless pole piece storage box is a square box with semicircular notches at both ends and no bottom, which is convenient for storing and taking the positive and negative pole pieces;

4) There is a pole piece size control board installed under the bottomless pole piece storage box, which can store pole pieces of different sizes and increases its adaptability;

5) The pole piece conveying device is installed in parallel from top to bottom, which facilitates the movement of positive and negative pole pieces to the stacking mechanism at the same time, increasing efficiency;

6) The telescopic rack device of the stacking mechanism can be telescoped by pulling one end, so that all the positive and negative electrode plates can be easily attached to each other alternately. The structure is simple and the cost is reduced;

7) The stacking mechanism uses a compression cylinder and a power component to work together. The power component realizes the expansion and contraction of the telescopic frame device, and the compression cylinder realizes the compression of the pole pieces. The structure is simple and the cost is reduced;

8) Both the vacuum conveying plate and the stacking table have rectangular slots to facilitate the clamping of the counter electrode pieces;

9) The transmission mechanism uses gears to drive two racks to move toward each other, driving the pole piece conveying mechanism to move toward the stacking mechanism. The structure is simple, and the power only needs to be provided by a stepper motor, without the need for a complex control system;

10) The diaphragm cutting mechanism uses upper and lower blades. The upper blade is fixed and the lower blade is installed on the slider. The slider moves up and down in the guide rail through the cylinder. The structure is simple and the diaphragm can be cut;

11) After the diaphragm is rolled, wrapped and cut, the diaphragm clamping mechanism is used to clamp and transport the diaphragm to the clamp at the bottom of the telescopic frame, and then the next set of pole pieces is stacked to ensure the cyclic operation of the equipment.

Description of the drawings

Figure 1 is a schematic isometric view of the overall structure of an embodiment of a lithium battery cell one-time forming lamination machine according to the present invention;

Figure 2 is a schematic front view of the overall structure of an embodiment of the one-time molding and stacking machine for lithium battery cells according to the present invention;

Figure 3 is a schematic isometric view of the pole piece conveying device of an embodiment of the lithium battery cell one-time forming and stacking machine of the present invention;

Figure 4 is a schematic front view of the pole piece conveying device of an embodiment of the lithium battery cell one-time forming and stacking machine of the present invention;

Figure 5 is a schematic structural diagram of the lamination mechanism of an embodiment of the one-time forming lamination machine for lithium battery cells according to the present invention;

Figure 6 is a partially enlarged schematic view of the telescopic frame device of the lamination mechanism of the one-time forming lamination machine for lithium battery cells according to one embodiment of the present invention;

Figure 7 is a schematic front view of the connection between the lamination mechanism and the pole piece transport mechanism of an embodiment of the lithium battery cell one-time forming lamination machine of the present invention;

Figure 8 is a schematic isometric view of the transmission mechanism of an embodiment of the one-time molding and stacking machine for lithium battery cells according to the present invention;

Figure 9 is a schematic connection diagram of the cell clamping mechanism, separator winding mechanism, separator cutting mechanism and separator clamping mechanism of one embodiment of the lithium battery cell one-time forming stacking machine of the present invention.

In the picture: 1. Frame; 2. Pole piece conveying mechanism; 3. Diaphragm unwinding mechanism; 4. Lamination mechanism; 5. Transmission mechanism; 6. Diaphragm winding mechanism 7. Cell clamping mechanism; 8. Diaphragm Cutting mechanism; 9. Diaphragm clamping mechanism; 10. Connecting plate;

2.1. Pole piece conveying mechanism frame; 2.2. Bottomless pole piece storage box; 2.3. Pole piece size control board; 2.4. Vacuum conveying plate; 2.5. Grooves; 2.6. Rollers; 2.7. Pole piece conveying bearings; 2.8 , vacuum suction cup;

4.1. Stacking mechanism base frame; 4.2. Stacking table; 4.3. Pull-down side plate; 4.4. Telescopic frame device; 4.5. Clamp; 4.6. Upper fixed plate; 4.7. Pressing cylinder; 4.8. Pressing cylinder mounting plate; 4.9. Press the cylinder push plate; 4.10. Power components; 4.11. Lower rod; 4.401. Sliding shaft; 4.402. Connecting plate; 4.403. Rolling bearing; 4.404. Laminated mechanism slider; 4.405. Connecting shaft;

5.1. Transmission mechanism frame; 5.2. Stepper motor; 5.3. Stepper motor support plate; 5.4. Transmission mechanism bearing; 5.5. Bearing seat; 5.6. Gear; 5.7. Gear rack; 5.8. Linear guide rail; 5.9. Transmission mechanism slider;

6.1. Diaphragm winding cylinder mounting plate; 6.2. Diaphragm winding cylinder; 6.3. Diaphragm winding cylinder support plate; 6.4. Diaphragm winding sliding bearing; 6.5. Diaphragm winding air claw mounting plate; 6.6. Rotating air claw;

7.1. Battery core clamping cylinder mounting plate; 7.2. Battery core clamping cylinder; 7.3. Battery core clamping cylinder support plate; 7.4. Battery core clamping sliding bearing; 7.5. Battery core clamping air claw mounting plate; 7.6. Battery core clamping air claw;

8.1. Guide rail mounting plate; 8.2. Guide rail; 8.3. Upper blade mounting plate; 8.4. Upper blade; 8.5. Lower blade; 8.6. Cutting mechanism slider; 8.7. Cutting mechanism cylinder;

9.1. Diaphragm clamping cylinder mounting plate; 9.2. Diaphragm clamping cylinder; 9.3. Diaphragm clamping cylinder support plate; 9.4. Diaphragm clamping sliding bearing; 9.5. Diaphragm clamping air claw mounting plate; 9.6. Diaphragm clamping air claw ;

Detailed ways

Specific embodiments of the present invention are given below. The specific examples are only used to further illustrate the present invention and do not limit the scope of protection of the claims of this application.

The invention provides a lithium battery cell one-time forming lamination machine (see Figures 1-9, referred to as lamination machine), which includes a frame 1, a diaphragm unwinding mechanism 3, a diaphragm winding mechanism 6, and a cell clamping mechanism. 7. Diaphragm clamping mechanism 9 and connecting plate 10; characterized in that the stacking machine also includes a pole piece transport mechanism 2, a stacking mechanism 4, a transmission mechanism 5 and a diaphragm cutting mechanism 8;

The lamination mechanism 4 is installed in the middle position of the frame 1 and is used for one-time lamination assembly of positive and negative electrode pieces and separators to form a battery core;

The pole piece conveying mechanisms 2 are two groups with the same structure, installed on the frame 1, respectively located on both sides of the stacking mechanism 4 and arranged symmetrically with respect to the stacking mechanism 4, for transporting the positive pole pieces and the negative pole pieces. ;

The diaphragm unwinding mechanism 3 is installed at the top of the frame 1 and is located above the stacking mechanism 4; the diaphragm unwinding mechanism 3 is wrapped with a separator, and the separator is placed between the positive and negative electrode plates through unwinding; preferably, Two groups can be set up and used alternately;

The transmission mechanism 5 is installed on the frame 1 and is used to provide power for the pole piece transport mechanism 2 to transport the positive and negative pole pieces to the stacking mechanism 4;

The diaphragm winding mechanism 6 is installed on the frame 1, is located on the right side of the lamination mechanism 4, and is located between the diaphragm cutting mechanism 8 and the battery core clamping mechanism 7, and is used to process the battery cells formed by the lamination mechanism 4. Perform membrane coating;

The battery core clamping mechanism 7 is installed at one end of the frame 1, and is located on the right side of the separator winding mechanism 6, and is located in the middle position corresponding to the lamination mechanism 4, and is used to clamp the separator before and after the separator is wrapped. Batteries after covering;

The diaphragm cutting mechanism 8 is installed on the frame 1 and is located between the lamination mechanism 4 and the diaphragm winding mechanism 6, and is used to cut off the diaphragm after the diaphragm coating is completed;

The diaphragm clamping mechanism 9 is installed on the frame 1; the diaphragm clamping mechanism 9 is two groups with the same structure, symmetrically installed on both sides of the battery core clamping mechanism 7, and the two diaphragm clamping mechanisms 9 correspond to The edge of the separator is used to transport the coated and cut separator to the clamp 4.5 at the bottom of the stacking mechanism 4;

The connecting plate 10 is connected to the pole piece conveying mechanism 2 and the transmission mechanism 5 respectively;

The pole piece conveying mechanism 2 includes several pole piece conveying devices, which are arranged vertically and evenly; each pole piece conveying device includes a pole piece conveying mechanism frame 2.1, a bottomless pole piece storage box 2.2, and the size of the pole piece. Control board 2.3, vacuum conveying plate 2.4, sheave 2.5, roller 2.6, pole piece conveying bearing 2.7 and vacuum suction cup 2.8; one end of the pole piece conveying mechanism frame 2.1 is installed on the frame 1, and the other end is connected to the stack The pull-down side plate 4.3 of the mechanism 4 is connected; the bottomless pole piece storage box 2.2 is fixed on the pole piece conveying mechanism frame 2.1; the bottomless pole piece storage box 2.2 is a square box with semicircular gaps at both ends and no bottom surface. , it is easy to take the positive and negative electrode pieces, and there are installation plates on both sides of the bottom; the electrode piece size control board 2.3 is an L-shaped plate, there are two, which are installed on both sides of the bottom of the bottomless electrode piece storage box 2.2. on the board; the pole piece size control plate 2.3 has long round holes for supporting the positive and negative pole pieces and controlling the storage of pole pieces of different sizes through the installation positions of screws in the long round holes; the vacuum conveying plate 2.4 is connected through the connecting plate 10 is connected to the transmission mechanism 5 to achieve the purpose of the vacuum conveying plate 2.4 being able to move left and right; there is a vacuum suction cup 2.8 on the vacuum conveying plate 2.4 for adsorbing the pole pieces; there is a gap between the vacuum conveying plate 2.4 and the pole piece size control plate 2.3 The gap is used for the passage of the pole pieces; the sheaves 2.5 are installed at both ends of the inside of the pole piece conveyor frame 2.1 to ensure that the vacuum conveying plate 2.4 maintains linear motion; the rollers 2.6 are installed through the pole piece conveying bearings 2.7 On the pole piece conveying mechanism frame 2.1, it is located on the upper and lower surfaces of the vacuum conveying plate 2.4 and is in contact with the vacuum conveying plate 2.4, and is used to support the vacuum conveying plate 2.4 and ensure the stability of the movement of the vacuum conveying plate 2.4;

Preferably, the front end of the vacuum conveying plate 2.4 may have a rectangular groove to facilitate clamping;

The lamination mechanism 4 includes a lamination mechanism base 4.1, a lamination table 4.2, a pull-down side plate 4.3, a telescopic frame device 4.4, a clamp 4.5, an upper fixed plate 4.6, a compression cylinder 4.7, a compression cylinder mounting plate 4.8, a compression mechanism. Tighten the cylinder push plate 4.9, the power component 4.10 and the lower pull rod 4.11; the lamination mechanism bottom frame 4.1 is fixed on the frame 1; the lamination table 4.2 is installed on the lamination mechanism bottom frame 4.1; the lamination table 4.2 is opened There are rectangular slots to facilitate the cell clamping mechanism 7 to clamp the formed pole pieces; the pull-down side plates 4.3 are installed on both sides of the stacking mechanism chassis 4.1, and slide rails are provided on the inside of the pull-down side plates 4.3; the upper fixed plate The two ends of 4.6 are installed on the pull-down side panel 4.3; the telescopic rack device 4.4 is installed in the slide rail of the pull-down side panel 4.3 and can be freely retracted up and down; the clip 4.5 is installed on the connection of the telescopic rack device 4.4 from top to bottom. On the shaft 4.405, it is used to clamp the transported pole pieces; the center of the clamp 4.5 is flush with the vacuum conveying plate 2.4. When the vacuum conveying plate 2.4 adsorbs the positive and negative pole pieces and moves inward, the pair of the clamp 4.5 can be realized Accurate clamping of the pole piece; the power component 4.10 is fixed on the frame 1; the two ends of the lower pull rod 4.11 are connected to the sliding shafts 4.401 on both sides of the lower part of the telescopic rack device 4.4, and the middle part is connected to the piston rod of the power component 4.10 ; The compression cylinder mounting plate 4.8 is installed on the connecting shaft 4.405 at the top of the telescopic rack device 4.4; the compression cylinder 4.7 is installed on the compression cylinder mounting plate 4.8; the compression cylinder push plate 4.9 is installed on the compression On the piston rod of cylinder 4.7;

The telescopic frame device 4.4 includes a sliding shaft 4.401, a connecting plate 4.402, a rolling bearing 4.403, a stacking mechanism slider 4.404 and a connecting shaft 4.405; the sliding shaft 4.401, the connecting plate 4.402 and the connecting shaft 4.405 are alternately connected to form a V shape; the stack The slider 4.404 of the lamination mechanism is installed in the slide rail of the pull-down side plate 4.3; the rolling bearing 4.403 is installed in the slider 4.404 of the lamination mechanism; one end of the sliding shaft 4.401 is connected to the slider 4.404 of the lamination mechanism through the rolling bearing 4.403, and the other end is connected to the slider 4.404 of the lamination mechanism. One end is connected to the connecting plate 4.402; two ends of the connecting plate 4.402 are respectively installed with connecting shafts 4.405;

The transmission mechanism 5 includes a transmission mechanism frame 5.1, a stepper motor 5.2, a stepper motor support plate 5.3, a transmission mechanism bearing 5.4, a bearing seat 5.5, a gear 5.6, a gear rack 5.7, a linear guide rail 5.8 and a transmission mechanism slider 5.9 ; The transmission mechanism frame 5.1 is installed on the frame 1; the stepper motor support plate 5.3 and the bearing seat 5.5 are both fixed on the transmission mechanism frame 5.1; the transmission mechanism bearing 5.4 is installed in the bearing seat 5.5; The stepper motor 5.2 is installed on the stepper motor support plate 5.3. The rotating shaft of the stepper motor 5.2 passes through the inner ring of the transmission mechanism bearing 5.4, and a gear 5.6 is installed at the end; the gear 5.6 is fixed by a gear end cover and a sleeve; Two sets of transmission mechanism slide blocks 5.9 are respectively fixed on the upper and lower surfaces of the transmission mechanism frame 5.1; there are two linear guide rails 5.8, which are installed on the respective transmission mechanism slide blocks 5.9 and can slide relative to the transmission mechanism slide block 5.9; There are two gear racks 5.7, which are fixed on respective linear guide rails 5.8, and mesh with the upper and lower sides of the gear 5.6 respectively; one end of the two gear racks 5.7 and the two linear guide rails 5.8 is installed on the connecting plates 10 on both sides. When the stepper motor 5.2 is working, it is used to realize that the pole piece conveying mechanisms 2 on both sides move to the stacking mechanism 4 at the same time;

The diaphragm winding mechanism 6 includes a diaphragm winding cylinder mounting plate 6.1, a diaphragm winding cylinder 6.2, a diaphragm winding cylinder support plate 6.3, a diaphragm winding sliding bearing 6.4, a diaphragm winding air claw mounting plate 6.5 and a rotating air claw 6.6 ; The diaphragm winding cylinder mounting plate 6.1 and the diaphragm winding cylinder support plate 6.3 are installed on the frame 1; the diaphragm winding cylinder 6.2 is installed on the diaphragm winding cylinder mounting plate 6.1; the diaphragm winding sliding bearing The outer ring of 6.4 is installed in the round hole of the diaphragm winding cylinder support plate 6.3; the piston rod of the diaphragm winding cylinder 6.2 passes through the inner ring of the diaphragm winding sliding bearing 6.4, and the end is connected to the diaphragm winding air claw mounting plate 6.5; The rotating air claw 6.6 is installed on the diaphragm winding air claw mounting plate 6.5;

The battery core clamping mechanism 7 includes a battery core clamping cylinder mounting plate 7.1, a battery core clamping cylinder 7.2, a battery core clamping cylinder support plate 7.3, a battery core clamping sliding bearing 7.4, and a battery core clamping air claw mounting plate. 7.5 and battery core clamping air claw 7.6; the battery core clamping cylinder mounting plate 7.1 and the battery core clamping cylinder support plate 7.3 are installed on the frame 1; the battery core clamping cylinder 7.2 is installed on the battery core clamping On the cylinder mounting plate 7.1; the outer ring of the battery core clamping sliding bearing 7.4 is installed in the round hole of the battery core clamping cylinder support plate 7.3; the piston rod of the battery core clamping cylinder 7.2 slides through the battery core clamping The end of the inner ring of the bearing 7.4 is connected to the battery core clamping air claw mounting plate 7.5; the battery core clamping air claw 7.6 is installed on the battery core clamping air claw mounting plate 7.5, and the battery core clamping air claw 7.6 Corresponds to lamination table 4.2, used to clamp battery cores;

The diaphragm cutting mechanism 8 includes a guide rail mounting plate 8.1, a guide rail 8.2, an upper blade mounting plate 8.3, an upper blade 8.4, a lower blade 8.5, a cutting mechanism slider 8.6 and a cutting mechanism cylinder 8.7; the guide rail mounting plate 8.1 is fixed to the frame 1; the guide rail 8.2 is installed on the guide rail installation plate 8.1; the upper blade installation plate 8.3 is fixed on the guide rail installation plate 8.1; the cutting mechanism slider 8.6 is installed in the guide rail 8.2; the upper blade 8.4 and the lower blade 8.5 are respectively installed on the upper blade mounting plate 8.3 and the cutting mechanism slider 8.6; the output end of the cutting mechanism cylinder 8.7 is connected to the cutting mechanism slider 8.6. When the cutting mechanism cylinder 8.7 moves, the blade can move up and down, and the blade is moved up and down. cutting of diaphragm;

The diaphragm clamping mechanism 9 includes a diaphragm clamping cylinder mounting plate 9.1, a diaphragm clamping cylinder 9.2, a diaphragm clamping cylinder support plate 9.3, a diaphragm clamping sliding bearing 9.4, a diaphragm clamping air claw mounting plate 9.5 and a diaphragm clamping gas. Claw 9.6; the diaphragm clamping cylinder mounting plate 9.1 and the diaphragm clamping cylinder support plate 9.3 are installed on the frame 1; the diaphragm clamping cylinder 9.2 is installed on the diaphragm clamping cylinder mounting plate 9.1; the diaphragm clamping cylinder The outer ring of the sliding bearing 9.4 is installed in the round hole of the diaphragm clamping cylinder support plate 9.3; the piston rod of the diaphragm clamping cylinder 9.2 passes through the inner ring of the diaphragm clamping sliding bearing 9.4, and the end is installed with the diaphragm clamping air claw. The diaphragm clamping air claw 9.6 is installed on the diaphragm clamping air claw mounting plate 9.5, and the diaphragm clamping air claw 9.6 corresponds to the clip 4.5 at the bottom of the stacking mechanism 4.

The working principle and work flow of the lithium battery cell one-time forming lamination machine of the present invention are:

1) Conveying: The positive and negative pole pieces are placed in bottomless pole piece storage boxes 2.2 respectively, and the pole pieces are adsorbed on the vacuum conveying plate 2.4 under the action of the vacuum suction cups 2.8 on the vacuum conveying plate 2.4; the stepping of the transmission mechanism 5 The motor 5.2 provides power, and under the action of the transmission mechanism 5, drives the vacuum conveying plate 2.4 to move toward the stacking mechanism 4.

2) Lamination: The diaphragm unwinding mechanism 3 automatically unwinds, and the lowered diaphragm head is first clamped on the clip 4.5 at the bottom of the laminating mechanism 4. When the vacuum conveying plate 2.4 transports the positive and negative electrodes to the laminating mechanism 4 When the clamp 4.5 is in the position, the clamp 4.5 clamps the pole pieces and the diaphragm at the same time, and the vacuum conveying plate 2.4 retreats; under the action of the power component 4.10, the telescopic frame device 4.4 drives the clamp 4.5 to drive the positive and negative pole pieces to start moving towards the stacking table. 4.2 direction telescopic, the sliding shaft 4.401, the connecting plate 4.402 and the connecting shaft 4.405 are alternately connected to form a V shape. When the V shape of the telescopic frame device 4.4 is close to parallel, the compression cylinder 4.7 starts to move, pushing the compression cylinder push plate 4.8 Press the positive and negative electrode pieces on the stacking table 4.2 at one time, and at the same time loosen all the clamps 4.5, thus realizing the one-time patching of the stacked sheets.

3) Forming: After the pole piece is pressed, the cell clamping mechanism 7 clamps the pressed pole piece to the position of the diaphragm winding mechanism 6 under the push of the cell clamping cylinder 7.2, and the diaphragm winding mechanism 6 starts The action clamps the pressed pole piece, the cell clamping mechanism 7 retracts, the separator winding mechanism 6 starts to wrap and wind the pressed pole piece with the separator, and the cell clamping mechanism 7 clamps the coating again After removing the pole piece of the diaphragm, the diaphragm winding mechanism 6 retracts, the two diaphragm clamping mechanisms 9 start to clamp the two edges of the diaphragm, and the diaphragm cutting mechanism 8 cuts the diaphragm to form a complete battery core.

4) The diaphragm returns to its original position and proceeds to the next cycle: after the cutting is completed, the diaphragm clamping mechanism 9 again sends the diaphragm to the clamp 4.5 at the bottom of the stacking mechanism 4 to start the next cycle.

The parts not described in the present invention are applicable to the existing technology.

Claims (2)

1. A lithium battery cell one-time forming laminating machine, including a frame, a diaphragm unwinding mechanism, a diaphragm winding mechanism, a cell clamping mechanism, a diaphragm clamping mechanism and a connecting plate; it is characterized in that the laminating machine also Including pole piece conveying mechanism, stacking mechanism, transmission mechanism and diaphragm cutting mechanism; The lamination mechanism is installed in the middle position of the frame and is used for one-time lamination assembly of positive and negative electrode plates and separators; The pole piece conveying mechanisms are two groups of identical structures, installed on the frame, respectively located on both sides of the stacking mechanism and arranged symmetrically with respect to the stacking mechanism, for transporting positive pole pieces and negative pole pieces; The diaphragm unwinding mechanism is installed on the top of the frame and is used to place the diaphragm between the positive and negative electrode plates; The transmission mechanism is installed on the frame and used to provide power for the pole piece conveying mechanism; The diaphragm winding mechanism is installed on the frame and is used to wrap the cells formed by the lamination mechanism with diaphragms; The battery core clamping mechanism is installed on the frame and is used to clamp the battery core before and after the separator coating; The diaphragm cutting mechanism is installed on the frame and is used to cut off the diaphragm after the diaphragm coating is completed; The diaphragm clamping mechanism is installed on the frame; the diaphragm clamping mechanism is two groups with the same structure, symmetrically installed on both sides of the battery core clamping mechanism, and the two diaphragm clamping mechanisms respectively correspond to the edges of the diaphragm, with to transport the diaphragm to the clamp at the bottom of the stacking mechanism; The connecting plates are respectively connected to the pole piece conveying mechanism and the transmission mechanism; The pole piece conveying mechanism includes several pole piece conveying devices, which are arranged vertically and evenly; each pole piece conveying device includes a pole piece conveying mechanism frame, a bottomless pole piece storage box, a pole piece size control board, Vacuum conveying plate, groove wheel, roller, pole piece conveying bearing and vacuum suction cup; one end of the frame of the pole piece conveying mechanism is installed on the frame, and the other end is connected to the pull-down side plate of the stacking mechanism; the bottomless The pole piece storage box is fixed on the frame of the pole piece conveying mechanism; the bottomless pole piece storage box is a square box with semicircular notches at both ends and no bottom surface, and there are mounting plates on both sides of the bottom; the pole piece size control board There are two L-shaped plates, which are installed on the mounting plates on both sides of the bottom of the bottomless pole piece storage box. There are long round holes on the pole piece size control plate, which are used to support the positive and negative pole pieces and control the storage of different sizes. The pole piece; the vacuum conveying plate is connected to the transmission mechanism through the connecting plate; the vacuum conveying plate has a vacuum suction cup for adsorbing the pole piece; there is a gap between the vacuum conveying plate and the pole piece size control plate; the groove The wheels are installed at both ends of the inner side of the pole piece conveying mechanism frame; the rollers are installed on the pole piece conveying mechanism frame through pole piece conveying bearings, located on the upper and lower surfaces of the vacuum conveying plate and in contact with the vacuum conveying plate; The lamination mechanism includes a lamination mechanism base frame, a lamination table, a pull-down side plate, a telescopic frame device, a clamp, an upper fixed plate, a compression cylinder, a compression cylinder mounting plate, a compression cylinder push plate, a power component and a lower Pull rod; the bottom frame of the lamination mechanism is fixed on the frame; the lamination table is installed on the bottom frame of the lamination mechanism; the lamination table has a rectangular slot; the pull-down side plates are installed on both sides of the bottom frame of the lamination mechanism. On the side, there are slide rails on the inside of the pull-down side panel; the two ends of the upper fixed plate are installed on the pull-down side panel; the telescopic rack device is installed in the slide rail of the pull-down side panel; the clip is installed on the pull-down side panel from top to bottom. on the connecting shaft of the telescopic rack device; the center of the clip is flush with the vacuum conveying plate; the power component is fixed on the frame; the two ends of the lower pull rod are connected to the sliding shafts on both sides of the lower part of the telescopic rack device, and the middle part is connected to the power The piston rods of the components are connected; the compression cylinder mounting plate is installed on the connecting shaft at the top of the telescopic rack device; the compression cylinder is installed on the compression cylinder mounting plate; the compression cylinder push plate is installed on the compression cylinder on the piston rod; The transmission mechanism includes a transmission mechanism frame, a stepper motor, a stepper motor support plate, a transmission mechanism bearing, a bearing seat, a gear, a gear rack, a linear guide rail and a transmission mechanism slider; the transmission mechanism frame is installed on the machine on the frame; the stepper motor support plate and the bearing seat are fixed on the transmission mechanism frame; the transmission mechanism bearing is installed in the bearing seat; the stepper motor is installed on the stepper motor support plate, and the stepper motor The rotating shaft passes through the inner ring of the transmission mechanism bearing, and a gear is installed at the end; the gear is fixed through the gear end cover and sleeve; the two sets of transmission mechanism slide blocks are respectively fixed on the upper and lower sides of the transmission mechanism frame; the linear guide rail is two Each gear rack is mounted on its respective transmission mechanism slide block and can slide relative to the transmission mechanism slide block; the gear racks are two, fixed on their respective linear guide rails, and meshed with the upper and lower sides of the gear respectively; the two gear racks One end of the rack and two linear guide rails is installed on the connecting plates on both sides; The diaphragm cutting mechanism includes a guide rail mounting plate, a guide rail, an upper blade mounting plate, an upper blade, a lower blade, a cutting mechanism slide block and a cutting mechanism cylinder; the guide rail mounting plate is fixed on the frame; the guide rail is installed on the guide rail mounting plate on; the upper blade mounting plate is fixed on the guide rail mounting plate; the cutting mechanism slider is installed in the guide rail; the upper blade and the lower blade are respectively installed on the upper blade mounting plate and the cutting mechanism slider; the cutting The output end of the mechanism cylinder is connected with the slide block of the cutting mechanism; The telescopic frame device includes a sliding shaft, a connecting plate, a rolling bearing, a stacking mechanism slider and a connecting shaft; the sliding shaft, connecting plates and connecting shafts are alternately connected to form a V shape; the stacking mechanism slider is installed on the pull-down side plate in the slide rail; the rolling bearing is installed in the slide block of the lamination mechanism; one end of the sliding shaft is connected to the slide block of the lamination mechanism through the rolling bearing, and the other end is connected to the connecting plate; the two ends of the connecting plate are respectively installed with connecting shaft; The diaphragm winding mechanism includes a diaphragm winding cylinder mounting plate, a diaphragm winding cylinder, a diaphragm winding cylinder support plate, a diaphragm winding sliding bearing, a diaphragm winding air claw mounting plate and a rotating air claw; the diaphragm winding cylinder The mounting plate and the diaphragm winding cylinder support plate are installed on the frame; the diaphragm winding cylinder is installed on the diaphragm winding cylinder installation plate; the outer ring of the diaphragm winding sliding bearing is installed on the diaphragm winding cylinder support plate circle In the hole; the piston rod of the diaphragm winding cylinder passes through the inner ring of the diaphragm winding sliding bearing, and the end is connected to the diaphragm winding air claw mounting plate; the rotating air claw is installed on the diaphragm winding air claw mounting plate; The battery core clamping mechanism includes a battery core clamping cylinder mounting plate, a battery core clamping cylinder, a battery core clamping cylinder support plate, a battery core clamping sliding bearing, a battery core clamping air claw mounting plate and a battery core clamping Air claw; the battery core clamping cylinder mounting plate and the battery core clamping cylinder support plate are installed on the frame; the battery core clamping cylinder is installed on the battery core clamping cylinder mounting plate; the battery core clamping cylinder The outer ring of the sliding bearing is installed in the round hole of the battery core clamping cylinder support plate; the piston rod of the battery core clamping cylinder passes through the inner ring of the battery core clamping sliding bearing, and the end is installed with the battery core clamping air claw. board connection; the battery core clamping air claw is installed on the battery core clamping air claw mounting plate, and the battery core clamping air claw corresponds to the stacking table; The diaphragm clamping mechanism includes a diaphragm clamping cylinder mounting plate, a diaphragm clamping cylinder, a diaphragm clamping cylinder support plate, a diaphragm clamping sliding bearing, a diaphragm clamping air claw mounting plate and a diaphragm clamping air claw; the diaphragm clamp The cylinder clamping mounting plate and the diaphragm clamping cylinder support plate are installed on the frame; the diaphragm clamping cylinder is installed on the diaphragm clamping cylinder mounting plate; the outer ring of the diaphragm clamping sliding bearing is installed on the diaphragm clamping cylinder support In the circular hole of the plate; the piston rod of the diaphragm clamping cylinder passes through the inner ring of the diaphragm clamping sliding bearing, and the end is connected to the diaphragm clamping air claw mounting plate; the diaphragm clamping air claw is installed on the diaphragm clamping air claw The claw is installed on the plate, and the diaphragm clamping air claw corresponds to the clamp at the bottom of the stacking mechanism. 2. The one-time molding and stacking machine for lithium battery cells according to claim 1, characterized in that the front end of the vacuum conveying plate can have a rectangular groove to facilitate clamping.