CN213716942U

CN213716942U - Battery cell cutting and laminating device

Info

Publication number: CN213716942U
Application number: CN202022884988.6U
Authority: CN
Inventors: 王选朋; 朱少华; 刘子昂; 胡平
Original assignee: Wuhan Nanostar Technology Co ltd
Current assignee: Wuhan Nanostar Technology Co ltd
Priority date: 2020-12-04
Filing date: 2020-12-04
Publication date: 2021-07-16
Anticipated expiration: 2030-12-04

Abstract

The utility model relates to a cell cutting and laminating device, which is used for cutting an isolating membrane and superposing a positive plate, an isolating membrane and a negative plate, and comprises a base, a transmission component, a cutting component and a pressing component, wherein the first end of the base is provided with a cutting box, the second end is provided with a pressing box, the base is provided with a conveying groove, the side surface of the second end of the base is provided with a feeding groove, the joint of the conveying groove and the feeding groove is provided with a pressing groove, the pressing groove is positioned below the pressing box, the side wall of the pressing groove is provided with a discharge port communicated with the outside, the transmission component comprises a main conveyor belt, a side conveyor belt and a plurality of pressing belts, the pressing belts are symmetrically arranged in the cutting box, the main conveyor belt is arranged in the conveying groove, the side conveyor belt is arranged in the feeding groove, the isolating membrane is moved into the pressing groove through the pressing belts and the main conveyor belt, the positive plate and the negative plate, the cutting assembly can cut the isolating membrane, and the pressing assembly is installed on the pressing box.

Description

Battery cell cutting and laminating device

Technical Field

The utility model relates to an electricity core technical field specifically is an electricity core is tailor and lamination device.

Background

The lithium battery has the advantages of high voltage, high specific energy, more recycling times, long storage time and the like, and as a core component of the lithium battery, the manufacturing of the battery core directly influences various relevant performances of the lithium battery.

The existing battery core lamination technology can be divided into a manual type, a winding type battery core and a laminated type battery core, wherein the manual lamination mode is that a worker alternately stacks positive and negative pole pieces into a clamp according to a set requirement for lamination, the regularity of the lamination is greatly influenced by human factors, the consistency of a finished product is lower, the production efficiency is low, the winding type battery core is suitable for a small-capacity battery, the winding process is not easy to control, the partial winding deformation is easy, the laminated type battery core is alternately put into an isolation film by negative pole pieces and positive pole pieces, the layer number of the laminated type battery core and the size of the pole pieces are not limited, the performance of the battery is good, and the laminated type battery core is suitable for manufacturing a large-capacity battery.

However, the existing battery cell laminating machine still has many defects in the treatment of the isolating membrane, and bending and wrinkling phenomena occur when the isolating membrane is cut.

SUMMERY OF THE UTILITY MODEL

Technical problem to be solved

The utility model provides a battery core is tailor and lamination device to solve the problem that proposes in the above-mentioned background art.

(II) technical scheme

In order to achieve the above object, the utility model provides a following technical scheme:

a cell cutting and laminating device is used for cutting an isolating membrane and laminating a positive plate, an isolating membrane and a negative plate and comprises a base, a transmission assembly, a cutting assembly and a pressing assembly, wherein the first end of the base is provided with a cutting box, the second end of the base is provided with a pressing box, the base is provided with a conveying groove, the first end of the conveying groove is positioned below the cutting box, the second end of the conveying groove is positioned below the pressing box, the side surface of the second end of the base is provided with a feeding groove communicated with the conveying groove, the joint of the conveying groove and the feeding groove is provided with a pressing groove, the pressing groove is positioned below the pressing box, the side wall of the pressing groove is provided with a discharge port communicated with the outside, the transmission assembly comprises a main conveying belt, a side conveying belt and a plurality of pressing belts, the pressing belts are symmetrically arranged in the cutting box, the main conveying belt is arranged in the conveying groove, the side conveying belts are arranged in the feeding groove, positive plate and negative pole piece pass through the side conveyer belt and remove to compressing tightly the inslot, and cutting assembly installs at the cutting incasement, and cutting assembly can compress tightly the diaphragm cutting, compresses tightly the unit mount on compressing tightly the case, and when positive plate, diaphragm and negative pole membrane fell into in proper order and compress tightly the inslot, it can toward compressing tightly the groove direction removal to compress tightly the subassembly.

Preferably, the cutting assembly comprises a cutting part, a first rotating wheel and a first motor, a detachable positioning block is arranged in the cutting box, a cutting groove matched with the cutting part is formed in the positioning block, the first motor is fixedly installed in the cutting box, an output shaft of the first motor is fixedly connected with the first rotating wheel, one end of the cutting part is connected with the cutting box in a sliding mode, the other end of the cutting part is meshed with the first rotating wheel for transmission, the first motor can drive the cutting part to move close to the cutting groove, and then the isolation film is cut.

Preferably, the device still includes spacing subassembly, compress tightly the subassembly including compressing tightly the piece, second runner and second motor, spacing subassembly includes the locating part, third runner and third motor, spacing subassembly is equipped with three groups, it is equipped with three holding tank to compress tightly the groove lateral wall, second motor fixed mounting is in the holding tank, and its output shaft and second runner fixed connection, compress tightly a one end and compress tightly case sliding connection, the other end and the meshing transmission of second runner, third motor fixed mounting is in the holding tank, and its output shaft and third runner fixed connection, locating part one end and holding tank sliding connection, the other end and the meshing transmission of third runner.

Preferably, the device also comprises a pushing assembly, the pushing assembly comprises a pushing part, a fourth rotating wheel and a fourth motor, a pushing groove is further formed in the side wall of the pressing groove, the third motor is fixedly installed in the pushing groove, an output shaft of the third motor is fixedly connected with the pushing part, one end of the pushing part is connected with the pushing part in a sliding mode, and the other end of the pushing part is in meshing transmission with the fourth rotating wheel.

Preferably, the device still includes installation pole and mounting, and the location arch is equipped with four, and the installation pole corresponds four location archs and is equipped with two, and the installation pole is installed on the location arch, mounting and installation pole threaded connection, and the barrier film passes through mounting detachable and installs on the installation pole.

Preferably, the device still includes many tensile poles, and many tensile poles are installed and are being close to barrier film one side at the cutting case, and the compressing band is equipped with four, and the barrier film one end is kept away from in the symmetry setting below tensile pole, and two compressing bands intervals of homonymy are 0.5 mm.

Preferably, the device further comprises a first rotating rod and a second rotating rod, the main conveying belt and the side conveying belt are installed in the conveying trough and the feeding trough through the first rotating rod and the second rotating rod which are different in length, the diameter of the first rotating rod is smaller than that of the second rotating rod, and the first rotating rod is installed on one side close to the pressing trough.

(III) advantageous effects

Compared with the prior art, the beneficial effects of the utility model are that: firstly, one end of an isolating membrane extends into a cutting box from a base, then the device is started, a pressing belt drives the isolating membrane to move towards the second end of the base, at the moment, a cutting assembly moves towards the direction close to the isolating membrane to cut the isolating membrane, the cut isolating membrane falls onto a main conveying belt and falls into a pressing groove along with the rotation of the main conveying belt, a side conveying belt also conveys a positive plate and a negative plate into the pressing groove, at the moment, the pressing assembly moves towards the direction close to the pressing groove to press the positive plate, the isolating membrane and the negative plate, after the pressing is completed, the pressing assembly moves towards the direction far from the pressing groove, the pressed positive plate, the isolating membrane and the negative plate are discharged from a discharge port, then the cutting assembly continues to cut the isolating membrane and is conveyed into the pressing groove to be pressed by the pressing assembly, the recycling of the device is realized, and in general, the cell and the laminating device press the isolating membrane through the pressing belt, avoid its phenomenon of appearing bending, fold to transport through main belt, receive the pollution before reducing the lamination.

Drawings

The accompanying drawings are included to provide a further understanding of the invention, and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention, and together with the description, do not constitute a limitation of the invention, in which:

fig. 1 shows an overall structural diagram of an embodiment of the present invention;

fig. 2 shows a schematic overall structure diagram of the embodiment of the present invention;

fig. 3 shows a first cross-sectional view of an embodiment of the present invention in use;

fig. 4 shows a second sectional view of the embodiment of the present invention in use;

fig. 5 shows an enlarged view of a in fig. 3 of an embodiment of the present invention;

fig. 6 shows an enlarged view of B in fig. 3 of an embodiment of the present invention;

fig. 7 shows an enlarged view of C in fig. 4 of an embodiment of the present invention;

fig. 8 shows an enlarged view of D in fig. 4 of an embodiment of the present invention;

figure 9 shows a cross-sectional view of a base of an embodiment of the present invention.

In the figure: 10 bases, 11 cutting boxes, 12 pressing boxes, 13 transport grooves, 14 feed grooves, 15 pressing grooves, 16 discharge ports, 20 transmission assemblies, 21 main conveyor belts, 22 side conveyor belts, 23 pressing belts, 26 isolating films, 30 cutting assemblies, 31 cutting pieces, 32 first rotating wheels, 33 first motors, 34 positioning blocks, 35 cutting grooves, 40 pressing assemblies, 41 pressing pieces, 42 second rotating wheels, 43 second motors, 50 limiting assemblies, 51 limiting pieces, 52 third rotating wheels, 53 third motors, 54 accommodating grooves, 60 pushing assemblies, 61 pushing pieces, 62 fourth rotating wheels, 63 fourth motors, 64 pushing grooves, 70 mounting rods, 71 fixing pieces, 72 stretching rods, 73 first rotating rods, 74 second rotating rods and 75 positioning protrusions.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

Referring to the attached drawings 1-9, the utility model discloses a cell cutting and laminating device, which is used for cutting an isolating membrane and laminating a positive plate, an isolating membrane 26 and a negative plate, and comprises a base 10, a transmission component 20, a cutting component 30 and a pressing component 40, wherein a first end of the base 10 is provided with a cutting box 11, a second end is provided with a pressing box 12, a conveying trough 13 is arranged on the base 10, a first end of the conveying trough 13 is positioned below the cutting box 11, a second end is positioned below the pressing box 12, a feeding trough 14 communicated with the conveying trough 13 is arranged on the side surface of the second end of the base 10, a pressing trough 15 is arranged at the joint of the conveying trough 13 and the feeding trough 14, the pressing trough 15 is positioned below the pressing box 12, a discharge port 16 communicated with the outside is arranged on the side wall of the pressing trough 15, the transmission component 20 comprises a main conveyor belt 21, a side conveyor belt 22 and a plurality of pressing belts 23, the pressing belts 23 are symmetrically, the main conveyor belt 21 is installed in the conveying groove 13, the side conveyor belt 22 is installed in the feeding groove 14, the isolating membrane 26 moves to the pressing groove 15 through the pressing belt 23 and the main conveyor belt 21, the positive plate and the negative plate move to the pressing groove 15 through the side conveyor belt 22, the cutting assembly 30 is installed in the cutting box 11, the cutting assembly 30 can cut the isolating membrane 26, the pressing assembly 40 is installed on the pressing box 12, and when the positive plate, the isolating membrane 26 and the negative plate sequentially fall into the pressing groove 15, the pressing assembly 40 can move towards the direction close to the pressing groove 15.

It should be noted that the isolation films 26 are located outside, and the distance between the symmetrical pressing belts 23 is smaller than the width dimension of the isolation films 26, so that the pressing belts 23 can drive the isolation films 26 to move out of the cutting box 11, and is cut by the cutting assembly 30, the pressing belt 23 can press the isolation film 26 tightly to prevent the isolation film 26 from bending and wrinkling, and can make the isolation film 26 in a tight state to facilitate the cutting of the cutting assembly 30, the side conveyor belt 22 can be externally connected with a device for cutting the positive plate and the negative plate to adjust the speed of the main conveyor belt 21 and the side conveyor belt 22, make positive plate, barrier film 26 and negative pole piece fall into in compressing tightly the groove 15 in proper order, avoid positive plate and negative pole piece collision, the emergence is exploded, and feed chute 14 symmetry is equipped with two, and side conveyer belt 22 corresponds feed chute 14 and is equipped with two, and transports positive plate and negative pole piece respectively, avoids both mixed transportation, influences production efficiency.

Based on the above scheme, the utility model discloses a use as follows: firstly, one end of an isolation film 26 extends into a cutting box 11 from a base 10, then the device is started, a pressing belt 23 drives the isolation film 26 to move towards the second end of the base 10, at the moment, a cutting assembly 30 moves towards the direction close to the isolation film 26 to cut the isolation film 26, the cut isolation film 26 falls onto a main conveyor belt 21 and falls into a pressing groove 15 along with the rotation of the main conveyor belt 21, a side conveyor belt 22 also conveys a positive plate and a negative plate into the pressing groove 15, at the moment, the pressing assembly 40 moves towards the direction close to the pressing groove 15 to press the positive plate, the isolation film 26 and the negative plate, after the pressing is completed, the pressing assembly 40 moves towards the direction far away from the pressing groove 15, the pressed positive plate, the isolation film 26 and the negative plate are discharged from a discharge port 16, then the cutting assembly 30 continues to cut the isolation film 26 and conveys the isolation film to the pressing groove 15 to be pressed by the pressing assembly 40, realize the device's used circularly, generally speaking, this electricity core is tailor and is compressed tightly barrier film 26 with the lamination device through compressing tightly area 23, avoids its phenomenon of bending, fold to transport through main belt 21, receive the pollution before the reduction lamination.

Further, the cutting assembly 30 includes a cutting member 31, a first rotating wheel 32 and a first motor 33, a detachable positioning block 34 is disposed in the cutting box 11, a cutting groove 35 capable of being matched with the cutting member 31 is disposed in the positioning block 34, the first motor 33 is fixedly mounted in the cutting box 11, an output shaft of the first motor is fixedly connected with the first rotating wheel 32, one end of the cutting member 31 is slidably connected with the cutting box 11, the other end of the cutting member is in meshing transmission with the first rotating wheel 32, the first motor 33 can drive the cutting member 31 to move toward the direction close to the cutting groove 35, so as to cut the isolation film 26, specifically, the positioning block 34 penetrates through the pressing belt 23 and is detachably mounted at the bottom of the cutting box 11, a middle portion of the mounting block is convexly designed and is at the same horizontal plane with an upper surface of the pressing belt 23 close to the bottom, so that the isolation film 26 can be attached to the cutting groove 35, and the cutting member 31 can, avoid cutting groove 35 and barrier film 26 to produce the level difference, appear the dislocation during cutting, influence the yield of barrier film 26, change the not unidimensional locating piece 34 that cuts groove 35 and cutting 31 and can cut the not unidimensional barrier film 26, the user's of being convenient for use improves the device's practicality.

Further, the device further comprises a limiting assembly 50, the pressing assembly 40 comprises a pressing member 41, a second rotating wheel 42 and a second motor 43, the limiting assembly 50 comprises a limiting member 51, a third rotating wheel 52 and a third motor 53, three sets of limiting assemblies 50 are provided, three accommodating grooves 54 are provided on the side wall of the pressing groove 15, the second motor 43 is fixedly installed in the accommodating grooves 54, an output shaft of the second motor 43 is fixedly connected with the second rotating wheel 42, one end of the pressing member 41 is slidably connected with the pressing box 12, the other end of the pressing member is in meshing transmission with the second rotating wheel 42, the third motor 53 is fixedly installed in the accommodating grooves 54, an output shaft of the third motor is fixedly connected with the third rotating wheel 52, one end of the limiting member 51 is slidably connected with the accommodating grooves 54, and the other end of the limiting member is in meshing transmission with the third rotating wheel 52, specifically, when the second motor 43 and the third motor 53 are started, output shafts of the second motor 43 and the third rotating wheel 52 respectively drive the second rotating wheel 42 and the, and the pressing member 41 and the limiting member 51 are slidably mounted in the pressing box 12 and the accommodating groove 54, so that the pressing member 41 and the limiting member 51 can move toward or away from the pressing groove 15, in a normal state, the pressing member 41 is stationary in the pressing box 12, the limiting member 51 is disposed in the accommodating groove 54, and the surface of the limiting member is attached to the wall of the pressing groove 15.

When the positive plate, the isolation film 26 and the negative plate sequentially fall into the pressing groove 15, the third motor 53 is started to drive the limiting member 51 to move towards the direction close to the pressing groove 15, so that the positive plate, the isolation film 26 and the negative plate are clamped, at this time, the second motor 43 is started to drive the pressing member 41 to move towards the direction close to the pressing groove 15, the bottom of the pressing member 41 is attached to the negative plate, lamination of the battery cell is realized, after lamination is completed, the second motor 43 and the third motor 53 drive the pressing member 41 and the limiting member 51 to move towards the direction away from the pressing groove 15, so that the battery cell is conveniently taken out, lamination of the battery cells with different sizes can be realized by adjusting the distance between two limiting members 51 and the size of one adjacent limiting member 51, and the practicability of the device is improved, in the embodiment, three containing grooves 54 are respectively arranged below the two feeding grooves 14 and the discharging port 16, and the limiting member 51 on one side of the discharging port 16 is smaller than, so that the positive plate, the isolation film 26 and the negative plate can be pressed and fixed conveniently by extending into the two spacing limit pieces 51.

Further, the device further comprises a pushing assembly 60, the pushing assembly 60 comprises a pushing member 61, a fourth rotating wheel 62 and a fourth motor 63, a pushing groove 64 is further formed in the side wall of the pressing groove 15, the third motor 53 is fixedly installed in the pushing groove 64, an output shaft of the third motor 53 is fixedly connected with the pushing member 61, one end of the pushing member 61 is connected with the fourth rotating wheel 62 in a sliding manner, and the other end of the pushing member 61 is in meshing transmission with the fourth rotating wheel 62, specifically, when the fourth motor 63 is started, the output shaft of the fourth motor drives the fourth rotating wheel 62 to rotate, the pushing member 61 is in meshing transmission with the fourth rotating wheel 62, and the pushing member 61 is installed in the pushing groove 64 in a sliding manner, so that the pushing member 61 can move towards or away from the pressing groove 15, after the lamination of the positive pole piece, the isolation film 26 and the negative pole piece is performed, the pressing member 41 and the limiting member 51 move away from the pressing groove 15, and the electric core is convenient to take out by sliding out the discharge hole 16, and the practicability of the device is improved.

Further, the device also comprises an installation rod 70 and a fixing piece 71, the number of the positioning protrusions 75 is four, the number of the installation rod 70 is two corresponding to the four positioning protrusions 75, the installation rod 70 is installed on the positioning protrusions 75, the fixing piece 71 is in threaded connection with the installation rod 70, the isolation films 26 are detachably installed on the installation rod 70 through the fixing piece 71, specifically, threads are arranged in the middle of the installation rod 70, during installation, the isolation films 26 are firstly sleeved on the installation rod 70, then the two fixing pieces 71 are slid to the two isolation films 26 and are in threaded connection with the installation rod 70, the positioning protrusions 75 are arranged at the left end and the right end of the outer portion of the cutting box 11, a motor for connecting the positioning protrusions 75 is arranged in the base 10, not shown in the drawing, the installation rod 70 can be driven to rotate by the motor, during use, the isolation films 26 at the first end of the base 10 firstly enter the cutting box 11 and then move, the mounting rod 70 far from the first end of the base 10 can roll up the cut isolation film 26 to recycle the waste articles, and the practicability of the device is improved by additionally arranging the mounting rod 70 and the fixing piece 71.

Further, the device still includes many tensile poles 72, many tensile poles 72 are installed and are being close to barrier film 26 one side at cutting box 11, hold-down strip 23 is equipped with four, and the symmetry sets up and keep away from barrier film 26 one end in tensile pole 72 below, barrier film 26 moves towards base 10 second end direction through tensile pole 72 and hold-down strip 23, barrier film 26 can make it become straight tensile state by the crooked state of roll-up through tensile pole 72, be convenient for cutting of cutting member 31, two hold-down strip 23 intervals of homonymy are 0.5mm, so that barrier film 26 both sides can be laminated with hold-down strip 23, be convenient for the transmission, in this embodiment, tensile pole 72 is equipped with three.

Further, the device further comprises a first rotating rod 73 and a second rotating rod 74, the main conveyor belt 21 and the side conveyor belt 22 are installed in the conveying trough 13 and the feeding trough 14 through the first rotating rod 73 and the second rotating rod 74 which are different in length, the diameter of the first rotating rod 73 is smaller than that of the second rotating rod 74, the first rotating rod 73 is installed on one side close to the pressing trough 15, specifically, the circle centers of the first rotating rod 73 and the second rotating rod 74 are at the same horizontal position, so that when the main conveyor belt 21 and the side conveyor belt 22 are sleeved on the first rotating rod 73 and the second rotating rod 74, the height of one end close to the pressing trough 15 is smaller than that of one end far away from the pressing trough 15, so that the positive pole piece, the isolation film 26 and the negative pole piece can stably fall into the pressing trough 15 along with the movement of the main conveyor belt 21 and the side conveyor belt 22, and the height of the pressing trough 15 is prevented from being too large to damage the positive, by adding the first rotating lever 73 and the second rotating lever 74, the stability and the practicability of the device are improved.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims

1. The utility model provides a battery core is tailor and lamination device for tailor the barrier film and stack positive plate, barrier film (26) and negative pole piece, its characterized in that still includes:

the cutting box (11) is arranged at the first end of the base (10), the compressing box (12) is arranged at the second end of the base (10), the conveying groove (13) is arranged on the base (10), the first end of the conveying groove (13) is positioned below the cutting box (11), the second end of the conveying groove is positioned below the compressing box (12), the feeding groove (14) communicated with the conveying groove (13) is arranged on the side surface of the second end of the base (10), the compressing groove (15) is arranged at the joint of the conveying groove (13) and the feeding groove (14), the compressing groove (15) is positioned below the compressing box (12), and a discharging hole (16) communicated with the outside is formed in the side wall of the compressing groove (15);

the conveying assembly (20) comprises a main conveying belt (21), a side conveying belt (22) and a plurality of pressing belts (23), the pressing belts (23) are symmetrically installed in the cutting box (11), the main conveying belt (21) is installed in the conveying groove (13), the side conveying belt (22) is installed in the feeding groove (14), the isolating film (26) moves into the pressing groove (15) through the pressing belts (23) and the main conveying belt (21), and the positive pole piece and the negative pole piece move into the pressing groove (15) through the side conveying belt (22);

a cutting assembly (30), the cutting assembly (30) being mounted within a cutting box (11), the cutting assembly (30) being operable to cut the barrier film (26);

the pressing assembly (40), the pressing assembly (40) is installed on the pressing box (12), and when the positive pole plate, the isolating film (26) and the negative pole film sequentially fall into the pressing groove (15), the pressing assembly (40) can move towards the direction close to the pressing groove (15).

2. The device for cutting and laminating the battery cell according to claim 1, wherein the cutting assembly (30) comprises a cutting member (31), a first rotating wheel (32) and a first motor (33), a detachable positioning block (34) is arranged in the cutting box (11), a cutting groove (35) capable of being matched with the cutting member (31) is arranged in the positioning block (34), the first motor (33) is fixedly installed in the cutting box (11), an output shaft of the first motor is fixedly connected with the first rotating wheel (32), one end of the cutting member (31) is slidably connected with the cutting box (11), the other end of the cutting member is in meshing transmission with the first rotating wheel (32), and the first motor (33) can drive the cutting member (31) to move towards the direction close to the cutting groove (35) so as to cut the isolating membrane (26).

3. The battery cell cutting and laminating device according to claim 1, further comprising a limiting assembly (50), wherein the pressing assembly (40) comprises a pressing member (41), a second rotating wheel (42) and a second motor (43), the limiting assembly (50) comprises a limiting member (51), a third rotating wheel (52) and a third motor (53), three sets of the limiting assembly (50) are provided, three accommodating grooves (54) are provided on a sidewall of the pressing groove (15), the second motor (43) is fixedly mounted in the accommodating grooves (54), an output shaft of the second motor is fixedly connected with the second rotating wheel (42), one end of the pressing member (41) is slidably connected with the pressing box (12), the other end of the pressing member is in meshing transmission with the second rotating wheel (42), the third motor (53) is fixedly mounted in the accommodating grooves (54), and an output shaft of the third motor is fixedly connected with the third rotating wheel (52), one end of the limiting piece (51) is connected with the accommodating groove (54) in a sliding mode, and the other end of the limiting piece is in meshed transmission with the third rotating wheel (52).

4. The device for cutting and laminating the battery cells according to claim 3, further comprising a pushing assembly (60), wherein the pushing assembly (60) comprises a pushing member (61), a fourth rotating wheel (62) and a fourth motor (63), a pushing groove (64) is further formed in a side wall of the pressing groove (15), the third motor (53) is fixedly installed in the pushing groove (64), an output shaft of the third motor is fixedly connected with the pushing member (61), one end of the pushing member (61) is connected with the pushing member in a sliding manner, and the other end of the pushing member (61) is in meshing transmission with the fourth rotating wheel (62).

5. The cell cutting and laminating device according to claim 1, further comprising a mounting rod (70) and a fixing member (71), wherein four positioning protrusions (75) are disposed on the base (10), two mounting rods (70) are disposed corresponding to the four positioning protrusions (75), the mounting rod (70) is mounted on the positioning protrusions (75), the fixing member (71) is in threaded connection with the mounting rod (70), and the isolating membrane (26) is detachably mounted on the mounting rod (70) through the fixing member (71).

6. The cell cutting and laminating device according to claim 5, further comprising a plurality of stretching rods (72), wherein the stretching rods (72) are installed on one side, close to the isolating membrane (26), of the cutting box (11), four of the pressing belts (23) are symmetrically arranged on one end, far away from the isolating membrane (26), of the cutting box, the two pressing belts (23) on the same side are spaced by 0.5 mm.

7. The cell cutting and laminating device according to claim 1, further comprising a first rotating rod (73) and a second rotating rod (74), wherein the main conveyor belt (21) and the side conveyor belt (22) are installed in the transportation groove (13) and the feeding groove (14) through the first rotating rod (73) and the second rotating rod (74) which are different in length, the diameter of the first rotating rod (73) is smaller than that of the second rotating rod (74), and the first rotating rod (73) is installed on one side close to the pressing groove (15).