WO2021022655A1

WO2021022655A1 - Lamination device having dual lamination platforms and lamination method therefor

Info

Publication number: WO2021022655A1
Application number: PCT/CN2019/109125
Authority: WO
Inventors: 鲁树立; 张进; 刘克亚; 罗杨青; 王庆祎
Original assignee: 深圳市格林晟科技有限公司
Priority date: 2019-08-06
Filing date: 2019-09-29
Publication date: 2021-02-11
Also published as: CN110416592A; CN110416592B

Abstract

A lamination device having dual lamination platforms and a lamination method therefor, which relate to the technical field of battery production devices; the lamination device having dual lamination platforms comprises positive plate feeding mechanisms (40), negative plate feeding mechanisms (10), separator unwinding mechanisms (20), and dual lamination platform mechanisms (30); the positive plate feeding mechanisms (40) and the negative plate feeding mechanisms (10) are located on the left and right sides of the dual lamination platform mechanisms (30) respectively and are used to provide the dual lamination platform mechanisms (30) with positive plates and negative plates respectively; the separator unwinding mechanisms (20) are located above the dual lamination platform mechanisms (30) and are used to provide the dual lamination platform mechanisms (30) with separators which are sandwiched between the positive plates and the negative plates; the dual lamination platform mechanisms (30) each comprise a rotary shaft (301), a rotary arm (302), a central rotating shaft (303), a first lamination platform (304), and a second lamination platform (305). The beneficial effects of the lamination device having dual lamination platforms and the lamination method therefor are: the lamination device having dual lamination platforms is capable of achieving an uninterrupted lamination operation, feeding time is greatly reduced and the working efficiency of the device is improved.

Description

Double-stacking table stacking equipment and stacking method

Technical field

The present invention relates to the technical field of battery production equipment. More specifically, the present invention relates to a double-stacking table stacking device and a stacking method thereof.

Background technique

With the further use of fuel-based non-renewable energy sources, tight supply and environmental pollution have led to a sharp increase in the market’s demand for large-scale lithium electronic power batteries. In the current lithium battery manufacturing process, a stacking machine is usually used to replace the lithium battery cells. The positive and negative plates and the diaphragm are assembled into a Z-shaped lamination to make a battery. The common stacking method in the prior art is the moving back and forth stacking of the stacking table. The left and right picking mechanical arm mechanism of the lithium battery stacking equipment picks up the pole pieces in the positive and negative two troughs, and is positioned by the secondary positioning table. After that, the stacking table is alternately unloaded. The stacking table moves left and right between the two robotic arms to cooperate with the actions of the two robotic arms. After stacking a negative electrode, move to the positive electrode for stacking, and make the separator form a Z-shaped The positive and negative plates are separated, and the device circulates in this way to realize the stack assembly of the pole group. When the number of stacks reaches the set value, the cell transfer manipulator will transfer the pole set to the winding diaphragm station, and the winding manipulator will The pole group is clamped, and the diaphragm is wrapped in the pole group. After the diaphragm wrapped outside the pole group reaches the set number of turns, the cutter cuts the diaphragm for finishing and glueing, and the equipment enters the assembly of the next pole group. The terminal block tape is attached to the pole group of the outer diaphragm to form a complete battery cell.

In the prior art lamination equipment, during the blanking process, the lamination table needs to wait for the blanking mechanism to complete the diaphragm cutting, clamping, and withdrawal actions before it can continue lamination. Therefore, the first battery cell is formed Later, before the second battery cell starts to be laminated, the laminated table is in an empty state, which wastes working time, the laminated efficiency is not high, and the cell production speed is limited.

Summary of the invention

In order to overcome the shortcomings of the prior art, the present invention provides a double-lamination table lamination equipment, which can realize uninterrupted lamination operation, greatly saves the blanking time and improves the equipment Work efficiency.

The technical solution adopted by the present invention to solve its technical problems is: a double-stacking table lamination equipment, and its improvement lies in that it includes a positive electrode sheet feeding mechanism, a negative electrode sheet feeding mechanism, a diaphragm unwinding mechanism and a double laminated table mechanism ；

The positive electrode sheet feeding mechanism and the negative electrode sheet feeding mechanism are respectively located on the left and right sides of the double laminated table structure, and are used to provide the positive electrode and negative electrode sheets to the double laminated table mechanism. The upper part of the film stage mechanism is used to provide the double-stacked stage mechanism with a diaphragm sandwiched between the positive electrode sheet and the negative electrode sheet;

The double-stacking table mechanism includes a rotating shaft, a rotating arm, a central rotating shaft, a first stacking table and a second stacking table. Both ends of the rotating shaft are respectively fixedly connected to the middle of a rotating arm. The first lamination table and the second lamination table are both arranged between the two rotating arms and are respectively located on both sides of the rotating shaft; a central rotating shaft passes through the first lamination table, and both ends of the central rotating shaft are connected to the two rotating arms respectively. One end of the two rotating arms is rotatably connected, and the other central shaft passes through the second lamination table, and both ends of the central shaft are respectively rotatably connected with the other ends of the two rotating arms; the first lamination table and the second lamination table The film stage is used to realize the stacking of pole pieces.

In the above structure, the first lamination table and the second lamination table have the same structure; wherein, the first lamination table includes a lamination base body and a lamination assembly, and the central rotation axis is from the lamination The center of the sheet base body passes through, and a sheet pressing assembly is provided on the opposite side walls of the laminated base body, and the sheet pressing assembly includes a sheet pressing drive device, a rotating shaft, a rotating cam, a translation sliding block and a sheet pressing plate;

Two rotating cams are fixedly installed on the rotating shaft, each rotating cam has an inclined guide ring, and the guide rings on the two rotating cams are symmetrical along the radial center line of the rotating shaft; the laminated base body is opposite to each other. Two translational sliders are slidably installed on the side wall of the, each of which is fixedly installed with a limit stop, and the guide ring of the rotating cam snaps into the limit groove of the limit stop;

The tablet pressing board is in the shape of "7", one end of the tablet pressing board is fixedly installed on the translational sliding block, and the other end of the tablet pressing board extends above the lamination seat body; The side wall of the base body is used to drive the rotating shaft to rotate.

In the above structure, the first lamination table further includes a lifting assembly, the lifting assembly includes a lifting slide and a lifting drive device, the lifting slide is arranged on the opposite side wall of the lamination base, the lifting The driving device is used to drive the lifting slide to lift and slide on the side wall of the laminated base body;

The rotating shaft and the tablet pressing driving device are both installed on the lifting slide, and the lifting slide is also fixedly installed with a translation slide rail, and the translation slide is slidably mounted on the translation slide rail.

In the above structure, the lifting drive device includes a lifting motor, a transmission belt, a lifting screw, a lifting block, and a lifting slide;

The lifting motor is fixed on the inner wall of the lamination base body, the two ends of the lifting screw rod are rotatably installed on the inner wall of the lamination base body, the lifting screw rod is matched with the lifting block, and the transmission belt is sleeved on the lifting block. Between the output wheel of the motor and the rotating wheel at one end of the lifting screw; the lifting block is fixedly connected to the lifting slider, the lifting slide is installed on the outer wall of the laminated base body, and the lifting slide is slidably installed on the lifting slide On track.

In the above structure, the tablet pressing drive device includes a driving motor and a tablet pressing belt, the driving motor is fixed on the lifting slide, the top of the motor shaft of the driving motor is equipped with a driving wheel, and the top of the rotating shaft is equipped with a driven wheel , The sheet pressing belt is sleeved on the driving wheel and the driven wheel.

In the above-mentioned structure, a laminated frame is fixedly installed above the laminated base body, and the laminated base body includes a top plate and two fixed side plates arranged oppositely, and the top plate is fixedly installed on the two fixed side plates. On the top of the side plate, the laminated frame is installed on the upper surface of the top plate;

A tablet clamping jaw is installed on the tablet pressing plate, one end of the tablet clamping jaw is fixed on the top of the tablet pressing plate, and the other end of the tablet clamping jaw extends above the stacking rack.

In the above structure, the positive electrode sheet feeding mechanism and the negative electrode sheet feeding mechanism have the same structure, wherein the positive electrode sheet feeding mechanism includes a working platform, a feeding assembly, a tray traversing assembly, and a return assembly;

The loading assembly includes a loading conveyor belt and two first side vertical plates fixed in parallel on the working platform. The loading conveyor belt is installed on the side of the first side vertical plate, and the loading conveyor belt is used to move on the first side. The upper part of the vertical board realizes the conveying of the feeding tray;

The said return component includes a return conveyor belt and two parallel second side vertical plates fixed on the working platform, the second side vertical plate is located on one side of the first side vertical plate and parallel to the first side vertical plate , The return conveyor belt is installed on the side of the second side vertical plate, and the return conveyor belt is used to realize the transmission of the upper tray above the second side vertical plate;

The material tray lateral movement assembly includes two parallel longitudinal conveyor belts, the longitudinal conveyor belt is perpendicular to the feeding conveyor belt, and the first side vertical plate and the second side vertical plate are provided with notches for accommodating the longitudinal conveyor belt , And the first side vertical plate between the two longitudinal conveyor belts is also provided with a feeding conveyor belt, and the second side vertical plate between the two longitudinal conveyor belts is also provided with a return conveyor belt.

In the above structure, the loading assembly further includes a loading baffle, the loading baffle is parallel to the first side vertical plate and is located outside the two first side vertical plates;

The said material return assembly further includes a material return baffle, which is parallel to the second side vertical plate and is located outside the two second side vertical plates;

The material tray horizontal movement assembly further includes a longitudinal baffle, which is perpendicular to the feeding baffle and is located at the end of the feeding conveyor belt.

In the above structure, a first transition wheel is provided under the notch of the first side vertical plate, and a first supporting wheel is provided on the first side vertical plate between the two longitudinal conveyor belts. Pass under the first transition wheel and pass over the first support wheel;

A second transition wheel is provided under the gap of the second side vertical plate, and a second support wheel is provided on the second side vertical plate between the two longitudinal conveyor belts, and the return conveyor belt is wound from below the second transition wheel. And pass over the second support wheel.

In addition, the present invention also provides a lamination method based on a double lamination table lamination equipment. The improvement lies in that the method includes the following steps:

A. In the initial state, the first stacking table is facing upwards and the second stacking table is facing downwards, and the diaphragm unwinding mechanism pulls the diaphragms and sends them to the first stacking table, which clamps the first layer of diaphragms hold;

B. Swing the first stacking table to the right stacking position, transfer the negative sheet of the negative sheet feeding mechanism to the first stacking table, and press it on the surface of the diaphragm;

C. Swing the first stacking table to the left stacking position, transfer the positive sheet of the positive sheet feeding mechanism to the first stacking table, and press it on the surface of the diaphragm, and the diaphragm is between the negative sheet and the positive sheet;

D. Repeat the above steps B and C until the positive electrode sheet and the negative electrode sheet have completed the stacking process of a cell;

E. The double lamination table mechanism rotates so that the first lamination table faces down and the second lamination table faces up. In this process, the diaphragm on the first lamination table is cut off and the first lamination table is placed on the The formed cells are transferred; the second lamination table clamps the diaphragm of the first layer,

F. The second lamination table swings to the right side lamination position, and the negative plate of the negative plate feeding mechanism is transferred to the second lamination table and pressed on the surface of the diaphragm;

G. Swing the second stacking table to the left stacking position, transfer the positive sheet of the positive sheet feeding mechanism to the second stacking table, and press it on the surface of the diaphragm, and the diaphragm is between the negative sheet and the positive sheet;

H. Repeat the above steps F and G until the positive electrode sheet and the negative electrode sheet have completed the stacking process of a cell;

I. The double lamination table mechanism rotates again so that the first lamination table faces up and the second lamination table faces down, and the double lamination table mechanism returns to the initial state.

The beneficial effect of the present invention is that during the lamination operation, the rotation switching between the first lamination table and the second lamination table can be realized, and the first layer diaphragm of the next battery cell can be completed in the process of cutting the first battery cell. Preparatory work such as clamping and pressing, greatly saves the blanking time, improves the efficiency of the equipment, thereby improving the production efficiency of the product.

Description of the drawings

Figure 1 is a schematic side view of a double-stacking table lamination equipment of the present invention.

Fig. 2 is a schematic diagram of a three-dimensional structure of a double-stacking table lamination equipment of the present invention.

Fig. 3 is a schematic diagram of the three-dimensional structure of the double lamination table mechanism of the double lamination table lamination equipment of the present invention.

4 is a schematic diagram of the internal structure of the first lamination stage of the double lamination stage mechanism of the present invention.

Fig. 5 is a schematic structural diagram of a positive electrode sheet feeding mechanism of a double-layer sheet stacking device of the present invention.

Figures 6 to 12 are schematic flow diagrams of the double lamination table mechanism of the lamination method of the double lamination table lamination equipment of the present invention.

detailed description

The present invention will be further described below in conjunction with the drawings and embodiments.

In the following, the concept, specific structure and technical effects of the present invention will be clearly and completely described in conjunction with the embodiments and drawings to fully understand the purpose, features and effects of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, other embodiments obtained by those skilled in the art without creative work belong to The scope of protection of the present invention. In addition, all the connection/connection relationships involved in the patent do not only refer to the direct connection of the components, but rather that a better connection structure can be formed by adding or reducing connection accessories according to specific implementation conditions. The various technical features in the invention can be combined interactively on the premise of not conflicting with each other.

Referring to Figures 1 and 2, the present invention discloses a double-stacking table lamination equipment. Specifically, the double-stacking table lamination equipment includes a positive electrode sheet feeding mechanism 40, a negative electrode sheet feeding mechanism 10, and a diaphragm unwinding The mechanism 20 and the double lamination table mechanism 30, and the positive electrode sheet feeding mechanism 40, the negative electrode sheet feeding mechanism 10, the diaphragm unwinding mechanism 20 and the double lamination table mechanism 30 are all arranged on the platform support frame 101. The positive electrode sheet feeding mechanism The mechanism 40 and the negative electrode sheet feeding mechanism 10 are respectively located on the left and right sides of the double-stacking table structure, and are respectively used to provide positive and negative electrode sheets to the double-stacking table mechanism 30. The diaphragm unwinding mechanism 20 is located on the double-stacking table. The upper part of the mechanism 30 is used to provide the double-stack table mechanism 30 with a diaphragm sandwiched between the positive electrode sheet and the negative electrode sheet. The double-stack stage mechanism 30 realizes the operation of stacking the positive electrode sheet and the negative electrode sheet. As shown in Figure 2, in this embodiment, on the same support frame, there are two sets of double lamination table lamination equipment arranged side by side, and their structures are completely the same. In this embodiment, only one set of double lamination table lamination equipment is stacked. The structure of the chip device is described in detail. In addition, it should be noted that a plurality of material-moving mechanical arms 102 are also provided on the platform support frame 101. The function of the material-moving mechanical arms 102 is to realize the transfer of the positive electrode sheet and the negative electrode sheet, for example, the positive electrode sheet feeding mechanism The positive plate transferred by 40 is transferred to the double-stacking table mechanism 30. The structure of the material-moving mechanical arm 102 is relatively common in the prior art, and its specific structure is not explained in this embodiment.

For the double-stacked table mechanism 30, as shown in Figures 3 and 4, the present invention provides a specific embodiment. The double-stacked table mechanism 30 includes a rotating shaft 301, a rotating arm 302, a central rotating shaft 303, and a first For the lamination table 304 and the second lamination table 305, both ends of the rotating shaft 301 are rotatably mounted on the top of a support base 306, and the two ends of the rotating shaft 301 are respectively fixedly connected to the middle of a rotating arm 302, the The first lamination table 304 and the second lamination table 305 are both arranged between the two rotating arms 302, and are respectively located on both sides of the rotating shaft 301; a central rotating shaft 303 passes through the first lamination table 304, the center The two ends of the rotating shaft 303 are respectively rotatably connected with one end of the two rotating arms 302, the other central rotating shaft 303 passes through the second lamination table 305, and the two ends of the central rotating shaft 303 are respectively rotatably connected with the other ends of the two rotating arms 302 ; The first lamination stage 304 and the second lamination stage 305 are used to achieve the stack of pole pieces.

Through the above structure, driven by power, the rotating shaft 301 can be driven to rotate, driving the rotating arm 302 to rotate in the vertical direction. Since the first lamination table 304 and the second lamination table 305 both pass through the central rotating shaft 303, It is rotatably connected with the rotating arm 302, so when the rotating arm 302 rotates, both the first lamination table 304 and the second lamination table 305 can maintain a high level state; during the lamination operation, the first lamination can be realized The rotation of the table 304 and the second lamination table 305 is switched, and the preparation work such as clamping and pressing the first diaphragm of the next battery cell is completed during the blanking process of the first battery cell, which greatly saves the blanking time and improves the equipment The lamination efficiency, thereby improving the production efficiency of the product.

In the foregoing embodiment, the present invention provides a specific embodiment for the first lamination station 304 and the second lamination station 305. Specifically, the first lamination station 304 and the second lamination station 305 The structure of the stage 305 is the same. In this embodiment, only the structure of the first lamination stage 304 is described in detail. The first lamination stage 304 includes a lamination base body 3041 and a lamination assembly 3042. The central rotating shaft 303 passes through the center of the laminated base body 3041. A laminated frame 3043 is fixedly installed above the laminated base body 3041. The laminated base body 3041 includes a top plate 3044 and two opposite fixed side plates 3045. The top plate 3044 is fixedly installed on the top of the two fixed side plates 3045, and the laminated frame 3043 is installed on the upper surface of the top plate 3044.

Further, the opposing side walls of the laminated base body 3041 are provided with a tablet pressing assembly 3042. The tablet pressing assembly 3042 includes a tablet driving device, a rotating shaft 3046, a rotating cam 3047, a translation slider 3048, and a tablet pressing plate. 3049; Two rotating cams 3047 are fixedly installed on the rotating shaft 3046, each rotating cam 3047 has an inclined guide ring, and the guide rings on the two rotating cams 3047 are symmetrical along the radial centerline of the rotating shaft 3046; Two translational sliding blocks 3048 are slidably installed on the opposite side walls of the laminated base body 3041, each of the translational sliding blocks 3048 is fixedly installed with a limit stop 3050, and the guide ring of the rotating cam 3047 is locked into the limit stop 3050. In the limiting groove; the pressing plate 3049 is in the shape of "7", one end of the pressing plate 3049 is fixedly mounted on the translation slider 3048, and the other end of the pressing plate 3049 extends above the laminated base 3041 ; Through this structure, when the rotating shaft 3046 rotates, the limit baffle is driven by the rotating cam 3047 to drive the translation slider 3048 to translate in the horizontal direction, because the two rotating cams 3047 have the same structure and rotate The guide ring on the cam 3047 is symmetrical along the radial centerline of the rotating shaft 3046, so the two limit sliders can move in different directions simultaneously, driving the pressing plate 3049 to open and close. The tablet pressing driving device is arranged on the side wall of the laminated base body 3041 and is used to drive the rotating shaft 3046 to rotate. The pressing plate 3049 is provided with a pressing jaw 3051, one end of the pressing jaw 3051 is fixed to the top end of the pressing plate 3049, and the other end of the pressing jaw 3051 extends above the stack frame 3043.

Further, the first lamination table 304 further includes a lifting assembly, which includes a lifting slide 3052 and a lifting drive device. The lifting slide 3052 is arranged on opposite side walls of the lamination base 3041. The lifting drive device is used to drive the lifting slide 3052 to lift and slide on the side wall of the laminated base 3041; the rotating shaft 3046 and the press drive device are both installed on the lifting slide 3052, and the lifting slide is also fixedly installed The translational sliding rail 3053 is slidably mounted on the translational sliding block 3048. In this embodiment, as shown in Figure 2, the lifting drive device includes a lifting motor 3054, a transmission belt 3055, a lifting screw 3056, a lifting block 3057, and a lifting slide 3058; the lifting motor 3054 is fixed on the lamination On the inner wall of the base 3041, both ends of the lifting screw 3056 are rotatably mounted on the inner wall of the laminated base 3041. The lifting screw 3056 is matched with the lifting block 3057. The transmission belt 3055 is sleeved on the lifting motor 3054. Between the output wheel and the rotating wheel at one end of the lifting screw 3056; the lifting block 3057 is fixedly connected to the lifting slider, the lifting slide 3058 is installed on the outer wall of the laminated base body 3041, and the lifting slide 3052 is slidably installed On the lifting slide 3058.

In the above embodiment, the tablet pressing driving device includes a driving motor (not marked in the figure) and a tablet pressing belt 3059. The driving motor is fixed on the lifting slide 3052, and the top of the motor shaft of the driving motor is equipped with a driving wheel. A driven wheel is installed at the top of the rotating shaft 3046, and the sheet pressing belt 3059 is sleeved on the driving wheel and the driven wheel.

Through the above-mentioned structure, the lifting assembly is installed inside the lamination base body 3041 to realize the hidden structure design, avoiding the lifting assembly to occupy the volume of the first lamination table 304, and the overall structure is more compact and compact; During the filming process, the lifting assembly can drive the lifting slide 3052 to reciprocate in the vertical direction. At the same time, driven by the rotational force of the rotating shaft 3046, the two opposing tablet clamping jaws 3051 can simultaneously open or close. The clamping jaw 3051 can press and loosen the diaphragm according to the control, and realize the operation of lamination. The first lamination table 304 of this structure has a compact and reasonable structure. After the cells are formed by lamination on the first lamination table 304, the first lamination table 304 realizes rotation, and while cutting the diaphragm and blanking, the clamping and pressing of the diaphragm on the second lamination table 305 are completed. Action, there is no need to wait for the battery cores on the first lamination stage 304 to be unloaded, thereby shortening the time of diaphragm cutting and blanking in each lamination cycle, and improving the efficiency of lamination. At the same time, because the first lamination is one by one The lamination operation is realized on the stage 304 and the second lamination stage 305, which can prevent double lamination on the lamination stage, avoid damaging the cells, and improve the yield of products.

As shown in FIG. 5, for the positive electrode sheet feeding mechanism 40 and the negative electrode sheet feeding mechanism 10, the present invention provides a specific embodiment. Since the positive electrode sheet feeding mechanism 40 and the negative electrode sheet feeding mechanism 10 have exactly the same structure, this embodiment In the example, only the structure of the positive electrode sheet feeding mechanism 40 is described in detail.

The positive electrode sheet feeding mechanism 40 includes a working platform 401, a feeding assembly, a tray lateral movement assembly, and a return assembly; the feeding assembly includes a feeding conveyor belt 402 and two parallel fixed on the working platform 401 The first side vertical plate 403, the feeding conveyor belt 402 is installed on the side of the first side vertical plate 403, and the feeding conveyor belt 402 is used to realize the conveying of the upper tray 404 above the first side vertical plate 403; The assembly includes a return conveyor belt 405 and two second side vertical plates 406 fixed in parallel on the working platform 401. The second side vertical plate 406 is located on one side of the first side vertical plate 403 and is opposite to the first side vertical plate 403. Parallel, the return conveyor belt 405 is installed on the side of the second side vertical plate 406, and the return conveyor belt 405 is used to realize the transfer of the upper tray 404 above the second side vertical plate 406; the material tray transverse movement assembly includes Two parallel longitudinal conveyor belts 407, the longitudinal conveyor belt 407 is perpendicular to the feeding conveyor belt 402, the first side upright plate 403 and the second side upright plate 406 are both provided with notches for accommodating the longitudinal conveyor belt 407, and the two The first side vertical plate 403 between the longitudinal conveyor belts 407 is also provided with a feeding conveyor belt 402, and the second side vertical plate 406 between the two longitudinal conveyor belts 407 is also provided with a return conveyor belt 405. In this embodiment, a first transition wheel (not marked in the figure) is provided under the notch of the first side vertical plate 403, and a first support is provided on the first side vertical plate 403 between the two longitudinal conveyor belts 407. Wheel 408, the feeding conveyor belt 402 passes under the first transition wheel, and passes over the first support wheel 408; the second transition wheel is provided under the gap of the second side vertical plate 406, two The second side vertical plate 406 between the longitudinal conveyor belts 407 is provided with a second supporting wheel 409, and the return conveyor belt 405 passes under the second transition wheel and passes over the second supporting wheel 409.

Through the above structure, the upper tray 404 is conveyed above the two first side vertical plates 403 by the upper conveyor belt 402. The upper conveyor belt 402 is wound on a plurality of rollers and is rotated by the rotation of the motor. This structure belongs to the existing structure. There is a technical category, which will not be described in detail in this embodiment. When the loading tray 404 is transferred to the end of the loading conveyor belt 402, the loading tray 404 is located on the longitudinal conveyor belt 407, where the pole pieces are loaded. After the loading is completed, the empty tray is on the loading conveyor belt 402. It moves to the return conveyor belt 405, and the empty tray is discharged by the return conveyor belt 405. In this process, the first side vertical plate 403 between the two longitudinal conveyor belts 407 is also set There is a feeding conveyor belt 402. The second side vertical plate 406 between the two longitudinal conveyor belts 407 is also provided with a return conveyor belt 405. The feeding tray 404 can be empty when moving from the feeding conveyor belt 402 to the longitudinal conveyor belt 407. When the disk is moved from the longitudinal conveyor belt 407 to the return conveyor belt 405, it is jammed, which facilitates the transmission of the material disk and improves the transmission efficiency. The pole piece feeding mechanism of the utility model can realize the automatic feeding of pole pieces and the automatic recovery of the material frame, improves the feeding efficiency, has a high degree of automation, and is low in cost.

In the above structure, the loading assembly further includes a loading baffle 410, which is parallel to the first side vertical plate 403 and is located outside the two first side vertical plates 403; The return material assembly also includes a return material baffle 411, which is parallel to the second side vertical plate 406 and is located on the outer side of the two second side vertical plates 406; the material tray transverse movement assembly also includes The longitudinal baffle 412 is perpendicular to the feeding baffle 410, and is located at the end of the feeding conveyor 402; in addition, the front end of the feeding baffle 410 is provided with an inclined guide piece 413, two An inlet of the upper tray 404 is formed between the guide pieces 413. Through the functions of the loading baffle 410, the return baffle 411 and the longitudinal baffle 412, the position of the loading tray 404 is limited to avoid the deviation of the position of the loading tray 404; due to the existence of the guide piece 413, the loading The tray 404 moves from the entrance to the feeding conveyor 402 to avoid the jam of the feeding tray 404 during the transmission process. In addition, the loading baffle 410, the return baffle 411, and the longitudinal baffle 412 are all fixed on the top of the supporting column 416, and the supporting column 416 is fixed on the working platform 401.

As a preferred embodiment, as shown in FIG. 5, the tray traverse assembly further includes a longitudinal power shaft 414, a longitudinal driven shaft (not marked in the figure), a longitudinal power belt 415, and a power motor (not shown in the figure). Mark); The longitudinal conveyor belt 407 is sleeved on the longitudinal power shaft 414 and the longitudinal driven shaft, one end of the longitudinal power shaft 414 is equipped with a pulley, the power motor is located below the longitudinal conveyor belt 407, and on the output shaft of the power motor An output wheel is installed, and the longitudinal power belt 415 is sleeved on the output wheel and the pulley.

In the above-mentioned embodiment, a pinch roller mechanism and a diaphragm cutting mechanism are further provided under the diaphragm unwinding mechanism, wherein the pinch roller mechanism is used to send the diaphragm to a designated position after the diaphragm is clamped. The cutting mechanism is used to cut the diaphragm; since the structures of the pinch roller mechanism and the diaphragm cutting mechanism are more common in the prior art, the detailed description is omitted in this embodiment.

In addition, the present invention also provides a lamination method based on the double lamination table lamination equipment. It should be noted that in this embodiment, only the working state of the double lamination table mechanism 30 is combined with the lamination method. Description, for example, the specific working process of the positive electrode sheet feeding mechanism, the negative electrode sheet feeding mechanism, and the separator unwinding mechanism will not be described in detail in this embodiment.

As shown in Figures 6 to 12, a lamination method based on a double lamination table lamination equipment of the present invention, the lamination method includes the following steps:

A. In the initial state, as shown in Figure 6, the first stacking table 304 faces upwards, the second stacking table 305 faces downwards, and the diaphragm unwinding mechanism pulls the diaphragm to the first stacking table 304. The film table 304 clamps the diaphragm of the first layer; in this embodiment, the diaphragm is pulled by the pinch roller mechanism to spread the diaphragm flatly on the first lamination table 304. The tablet pressing assembly of the first lamination table 304 clamps the diaphragm. Squeeze

B. The first lamination table 304 swings to the right lamination position, as shown in Fig. 7, at this time the double lamination table mechanism 30 is tilted to the right, and the negative plate of the negative plate feeding mechanism is moved by the material moving mechanical arm 102 Transfer to the first stacking table 304 and press on the surface of the diaphragm;

C. The first stacking table 304 swings to the left stacking position, as shown in Fig. 8, at this time the double stacking table mechanism 30 is tilted to the left, and the positive plate of the positive plate feeding mechanism is moved by the material moving mechanical arm 102 Transfer to the first stacking table 304 and press it on the surface of the diaphragm, which is located between the negative electrode sheet and the positive electrode sheet;

D. Repeat the above steps B and C until the positive electrode sheet and the negative electrode sheet have completed the stacking process of a battery cell. In this process, the sheet pressing assembly of the first stacking station 304 will stack the positive electrode sheet and the negative electrode sheet And the diaphragm is compressed to form a battery;

E. The double lamination table mechanism rotates, as shown in Figure 9, so that the first lamination table 304 faces downwards, and the second lamination table 305 faces upwards. In this process, the first lamination table 304 is cut by the diaphragm cutting mechanism. The upper diaphragm is cut off, and the cells formed on the first lamination table 304 are transferred; after that, the diaphragm is pulled by the pinch roller mechanism to spread the diaphragm evenly on the second lamination table 305, the second lamination table 305 Clamp the diaphragm of the first layer;

F. The second stacking table 305 swings to the right stacking position, as shown in Figure 10, at this time the double stacking table mechanism 30 is tilted to the right, and the material moving mechanical arm 102 transfers the negative plate of the negative plate feeding mechanism To the second lamination table 305, and press on the surface of the diaphragm;

G. The second stacking table 305 swings to the left stacking position, as shown in Figure 11, at this time the double stacking table mechanism 30 is inclined to the left, and the material moving mechanical arm 102 transfers the positive plate of the positive plate feeding mechanism To the second stacking table 305, and press on the surface of the diaphragm, the diaphragm is between the negative electrode sheet and the positive electrode sheet;

I. The double lamination table mechanism rotates again, as shown in Fig. 12, so that the first lamination table 304 faces upward and the second lamination table 305 faces downward, and the double lamination table mechanism returns to the initial state.

Through this process, the present invention can realize the rapid switching of the rotation of the double lamination table, and complete the preparation work such as clamping and pressing the first diaphragm of the next battery during the blanking process of the first battery, which greatly saves the blanking The auxiliary time improves the working efficiency of the equipment.

The above is a detailed description of the preferred implementation of the present invention, but the invention is not limited to the described embodiments. Those skilled in the art can make various equivalent modifications or substitutions without departing from the spirit of the present invention. These equivalent modifications or replacements are all included in the scope defined by the claims of this application.

Claims

A double-stacking table lamination equipment, characterized in that it comprises a positive electrode sheet feeding mechanism, a negative electrode sheet feeding mechanism, a diaphragm unwinding mechanism and a double-stacking table mechanism;

The positive electrode sheet feeding mechanism and the negative electrode sheet feeding mechanism are respectively located on the left and right sides of the double laminated table structure, and are used to provide the positive electrode and negative electrode sheets to the double laminated table mechanism. The upper part of the film stage mechanism is used to provide the double-stacked stage mechanism with a diaphragm sandwiched between the positive electrode sheet and the negative electrode sheet;

The double-stacking table mechanism includes a rotating shaft, a rotating arm, a central rotating shaft, a first stacking table and a second stacking table. Both ends of the rotating shaft are respectively fixedly connected to the middle of a rotating arm. The first lamination table and the second lamination table are both arranged between the two rotating arms and are respectively located on both sides of the rotating shaft; a central rotating shaft passes through the first lamination table, and both ends of the central rotating shaft are connected to the two rotating arms respectively. One end of the two rotating arms is rotatably connected, and the other central shaft passes through the second lamination table, and both ends of the central shaft are respectively rotatably connected with the other ends of the two rotating arms; the first lamination table and the second lamination table The film stage is used to realize the stacking of pole pieces.
The double lamination table lamination equipment according to claim 1, wherein the structure of the first lamination table and the second lamination table are the same; wherein, the first lamination table includes a lamination A tablet seat body and a tablet pressing assembly, the central rotating shaft passes through the center of the laminated seat body, and a tablet pressing assembly is arranged on opposite side walls of the laminated seat body, and the tablet pressing assembly includes a tablet pressing drive device , Rotating shaft, rotating cam, translation sliding block and pressing plate;

Two rotating cams are fixedly installed on the rotating shaft, each rotating cam has an inclined guide ring, and the guide rings on the two rotating cams are symmetrical along the radial center line of the rotating shaft; the laminated base body is opposite to each other. Two translational sliders are slidably installed on the side wall of the, each of which is fixedly installed with a limit stop, and the guide ring of the rotating cam snaps into the limit groove of the limit stop;

The tablet pressing board is in the shape of "7", one end of the tablet pressing board is fixedly installed on the translational sliding block, and the other end of the tablet pressing board extends above the lamination seat body; The side wall of the base body is used to drive the rotating shaft to rotate.
The double lamination table lamination equipment according to claim 2, characterized in that: the first lamination table further comprises a lifting assembly, the lifting assembly includes a lifting slide and a lifting driving device, the lifting slide is provided On the opposite side wall of the laminated base body, the lifting driving device is used to drive the lifting slide to lift and slide on the side wall of the laminated base body;

The rotating shaft and the tablet pressing driving device are both installed on the lifting slide, and the lifting slide is also fixedly installed with a translation slide rail, and the translation slide is slidably mounted on the translation slide rail.
The double lamination table lamination equipment according to claim 3, wherein the lifting driving device comprises a lifting motor, a transmission belt, a lifting screw, a lifting block and a lifting slide;

The lifting motor is fixed on the inner wall of the lamination base body, the two ends of the lifting screw rod are rotatably installed on the inner wall of the lamination base body, the lifting screw rod is matched with the lifting block, and the transmission belt is sleeved on the lifting block. Between the output wheel of the motor and the rotating wheel at one end of the lifting screw; the lifting block is fixedly connected to the lifting slider, the lifting slide is installed on the outer wall of the laminated base body, and the lifting slide is slidably installed on the lifting slide On track.
A double lamination table lamination equipment according to claim 3, characterized in that: the pressing drive device comprises a drive motor and a pressing belt, the drive motor is fixed on the lifting slide, and the top of the motor shaft of the drive motor A driving wheel is installed, a driven wheel is installed at the top of the rotating shaft, and the sheet pressing belt is sleeved on the driving wheel and the driven wheel.
The double-lamination table lamination equipment according to claim 2, characterized in that: a lamination frame is fixedly installed above the lamination base body, and the lamination base body includes a top plate and two oppositely arranged plates. Fixed side plates, the top plate is fixedly installed on the top of the two fixed side plates, and the laminated frame is installed on the upper surface of the top plate;

A tablet clamping jaw is installed on the tablet pressing plate, one end of the tablet clamping jaw is fixed on the top of the tablet pressing plate, and the other end of the tablet clamping jaw extends above the stacking rack.
The double stacking table stacking equipment according to claim 1, wherein the structure of the positive electrode sheet feeding mechanism and the negative electrode sheet feeding mechanism are the same, wherein the positive electrode sheet feeding mechanism includes a working platform and a feeding mechanism. Components, tray transversal components and return components;

The loading assembly includes a loading conveyor belt and two first side vertical plates fixed in parallel on the working platform. The loading conveyor belt is installed on the side of the first side vertical plate, and the loading conveyor belt is used to move on the first side. The upper part of the vertical board realizes the conveying of the feeding tray;

The said return component includes a return conveyor belt and two parallel second side vertical plates fixed on the working platform, the second side vertical plate is located on one side of the first side vertical plate and parallel to the first side vertical plate , The return conveyor belt is installed on the side of the second side vertical plate, and the return conveyor belt is used to realize the transmission of the upper tray above the second side vertical plate;

The material tray lateral movement assembly includes two parallel longitudinal conveyor belts, the longitudinal conveyor belt is perpendicular to the feeding conveyor belt, and the first side vertical plate and the second side vertical plate are provided with notches for accommodating the longitudinal conveyor belt , And the first side vertical plate between the two longitudinal conveyor belts is also provided with a feeding conveyor belt, and the second side vertical plate between the two longitudinal conveyor belts is also provided with a return conveyor belt.
A double stacking table lamination equipment according to claim 7, characterized in that: the loading assembly further comprises a loading baffle, the loading baffle is parallel to the first side vertical plate and is located at two The outer side of the first side riser;

The said material return assembly further includes a material return baffle, which is parallel to the second side vertical plate and is located outside the two second side vertical plates;

The material tray horizontal movement assembly further includes a longitudinal baffle, which is perpendicular to the feeding baffle and is located at the end of the feeding conveyor belt.
A pole piece feeding mechanism according to claim 7, characterized in that: a first transition wheel is arranged under the notch of the first side vertical plate, and the first side vertical plate between the two longitudinal conveyor belts is provided with The first supporting wheel, the feeding conveyor belt passes under the first transition wheel and passes over the first supporting wheel;

A second transition wheel is provided under the gap of the second side vertical plate, and a second support wheel is provided on the second side vertical plate between the two longitudinal conveyor belts, and the return conveyor belt is wound from below the second transition wheel. And pass over the second support wheel.
A lamination method based on a double lamination table lamination equipment, characterized in that the method includes the following steps:

A. In the initial state, the first stacking table is facing upwards and the second stacking table is facing downwards, and the diaphragm unwinding mechanism pulls the diaphragms and sends them to the first stacking table, which clamps the first layer of diaphragms hold;

B. Swing the first stacking table to the right stacking position, transfer the negative sheet of the negative sheet feeding mechanism to the first stacking table, and press it on the surface of the diaphragm;

C. Swing the first stacking table to the left stacking position, transfer the positive sheet of the positive sheet feeding mechanism to the first stacking table, and press it on the surface of the diaphragm, and the diaphragm is between the negative sheet and the positive sheet;

D. Repeat the above steps B and C until the positive electrode sheet and the negative electrode sheet have completed the stacking process of a cell;

E. The double lamination table mechanism rotates so that the first lamination table faces down and the second lamination table faces up. In this process, the diaphragm on the first lamination table is cut off and the first lamination table is placed on the The formed cells are transferred; the second lamination table clamps the diaphragm of the first layer,

F. The second lamination table swings to the right side lamination position, and the negative plate of the negative plate feeding mechanism is transferred to the second lamination table and pressed on the surface of the diaphragm;

G. Swing the second stacking table to the left stacking position, transfer the positive sheet of the positive sheet feeding mechanism to the second stacking table, and press it on the surface of the separator, the separator is between the negative sheet and the positive sheet;

H. Repeat the above steps F and G until the positive electrode sheet and the negative electrode sheet have completed the stacking process of a cell;

I. The double lamination table mechanism rotates again so that the first lamination table faces up and the second lamination table faces down, and the double lamination table mechanism returns to the initial state.