CN220811331U

CN220811331U - Cladding device for lithium battery pack production

Info

Publication number: CN220811331U
Application number: CN202322401517.9U
Authority: CN
Inventors: 张莹; 李小双
Original assignee: Hubei Junma Automobile Technology Co ltd
Current assignee: Hubei Junma Automobile Technology Co ltd
Priority date: 2023-09-05
Filing date: 2023-09-05
Publication date: 2024-04-19
Anticipated expiration: 2033-09-05

Abstract

The utility model relates to a cladding device for producing a lithium battery pack, which comprises a bottom plate, two side plates, two U-shaped frames and a cladding film releasing roller, wherein the two side plates are respectively fixed on the left side and the right side of the upper surface of the bottom plate through bolts, the two U-shaped frames are respectively fixed on the upper end surfaces of the two side plates through bolts, the cladding film releasing roller is detachably arranged in the two U-shaped frames, and a transverse plate is fixed between the opposite sides of the two side plates. This cladding device is used in lithium cell group production, through two squeeze rolls counter-rotating of motor drive, squeeze the wrapping film, bond for the wrapping film firmly adheres to the outside of lithium cell, and then ensures the bonding quality between wrapping film and the lithium cell, prevents to take place delamination or damage in the follow-up use, in lithium cell transportation process, can effectively get rid of the air between wrapping film and the lithium cell through squeezing the wrapping film, has improved the quality and the bonding degree of wrapping film.

Description

Cladding device for lithium battery pack production

Technical Field

The utility model relates to the technical field of lithium battery production, in particular to a cladding device for lithium battery pack production.

Background

The lithium battery coating process is usually carried out at an early stage of battery manufacturing, and is realized by adopting methods of coating, spraying, lamination and the like according to specific materials and process requirements. The quality and uniformity of the coating have an important effect on the performance and life of the battery, so that parameters such as thickness, uniformity and adhesion of the coating need to be strictly controlled in the production process.

Chinese patent publication No.: (CN 217437356U) a coating device for producing a lithium battery pack, which comprises the steps of trowelling and extruding a coating film by a leveling member, performing heat shrinkage coating in a mode of outputting hot air by a hot air blower, fixing the heat-shrunk coating film on the battery pack by spraying glue by a glue spraying pipe, avoid long-time use back coating film to drop, through first fixed plate and the fixed rotation of second fixed plate to the lithium cell group, can accomplish the pyrocondensation to the lithium cell group multi-angle, make the elasticity of different side cladding unanimous.

The applicant has found that the above patent has certain defects, for example, the above patent adheres the coating film on the outer side of the lithium battery by a rolling mode, in the process of rotating and rolling, the problem of uneven lamination, loosening or high compression is easy to occur in the edge regions of the electrode plate and the separator, and in the process of rotating and rolling, the surface defects such as wrinkling, folding or air bubbles of the coating film are easy to be caused, so that the appearance quality and consistency of the battery are affected, and therefore, the coating device for producing the lithium battery pack is provided to solve the technical problems.

Disclosure of utility model

Aiming at the defects of the prior art, the utility model provides a coating device for producing a lithium battery pack, which has the advantages of uniform coating and the like, and solves the problems that the surface defects such as folds, folds or bubbles of the coating are easily caused in the rotating and rolling process, so that the appearance quality and consistency of a battery are affected.

In order to achieve the above purpose, the present utility model provides the following technical solutions: the coating device for producing the lithium battery pack comprises a bottom plate, two side plates, two U-shaped frames and a coating film release roller;

the two side plates are respectively fixed on the left side and the right side of the upper surface of the bottom plate through bolts, the two U-shaped frames are respectively fixed on the upper end surfaces of the two side plates through bolts, and the wrapping film release roller is detachably arranged in the two U-shaped frames;

A transverse plate is fixed between the opposite sides of the two side plates, and a blanking slide plate is fixed inside the transverse plate;

The bottom plate is provided with an adhesion mechanism for coating the lithium battery, and the bottom plate is provided with a feeding mechanism for pushing the lithium battery;

Wherein the adhesion mechanism comprises a pressing component and a stretching component.

Further, the extrusion subassembly includes two rotatory rollers, two rotatory roller all rotates the inside of connecting at two curb plates of front side, two rotatory roller's right-hand member all runs through and extends to the right side of right side curb plate, left side the left side of curb plate is fixed with output and downside rotatory roller fixed connection's motor, two rotatory roller's right-hand member all is fixed with intermeshing's gear, two rotatory roller's the outside all is fixed with the extrusion roller.

Further, the two rotating rollers are arranged in an up-down parallel mode, and the two squeeze rollers are sponge rollers.

Further, a gap for a lithium battery to pass through is reserved between the two extrusion rollers, and the height of the gap is smaller than the thickness of the storage battery.

Further, the unloading slide includes swash plate and two flat boards, both sides all are fixed with the limiting plate around swash plate and the flat board, two the flat board is fixed respectively in the upper and lower both sides of swash plate, downside the upper surface at the bottom plate is fixed through the stand to the flat board, and the upside the inside at the diaphragm is fixed to the flat board, and is located same horizontal line with the horizontal axis of downside squeeze roll, two be fixed with two and be located the connecting plate of both sides about two squeeze rolls respectively between the opposite one side of curb plate.

Further, the stretching assembly comprises two air cylinders, the two air cylinders are hinged to the left side and the right side of the upper surface of the bottom plate through hinge shafts respectively, guide rails are fixed to the opposite sides of the side plates respectively, a cross rod is connected between the opposite sides of the guide rails in a sliding mode, sleeves are connected to the outer sides of the cross rods in a rotating mode, the output ends of the two air cylinders are hinged to the two sleeves through hinge shafts respectively, and an adhesion roller used for adhering a coating film is connected to the outer sides of the cross rods in a rotating mode.

Further, the guide rail comprises a vertical guide groove and an inclined guide groove, the vertical guide groove and the inclined guide groove are formed in the guide rail and are communicated with each other, and the upper end face of the inclined guide groove is located on the transverse central axis between the opposite sides of the two extrusion rollers.

Further, feed mechanism includes two slide rails, two the slide rail is fixed respectively in the left and right sides of bottom plate upper surface, two the equal sliding connection in the outside of slide rail has the slider, two the up end of slider is fixed with same support frame, the upper surface of bottom plate is fixed with the electric putter of output and support frame fixed connection, the up end of support frame is fixed with the box of placing that is used for placing the battery.

Further, the length of placing the box is less than the length of battery, place the cuboid that the box shape is inside cavity and up end and trailing flank all lack, the interior bottom wall of placing the box is located same transverse line with the up end in downside oblique direction guide groove.

Compared with the prior art, the technical scheme of the application has the following beneficial effects:

1. This cladding device is used in lithium cell group production, through two squeeze rolls counter-rotating of motor drive, squeeze the wrapping film, bond for the wrapping film firmly adheres to the outside of lithium cell, and then ensures the bonding quality between wrapping film and the lithium cell, prevents to take place delamination or damage in the follow-up use, in lithium cell transportation process, can effectively get rid of the air between wrapping film and the lithium cell through squeezing the wrapping film, has improved the quality and the bonding degree of wrapping film.

2. This cladding device is used in lithium cell group production through equipment such as electric putter, support frame, can realize the accurate control to lithium cell and tectorial membrane position, can ensure like this that the tectorial membrane is located the correct positioning of lithium cell, and the coverage is even unanimous.

Drawings

FIG. 1 is a schematic diagram of the structure of the present utility model;

FIG. 2 is a schematic rear view of the present utility model;

FIG. 3 is a schematic view of an adhesion mechanism of the present utility model;

FIG. 4 is a schematic rear view of the adhesive mechanism of the present utility model;

FIG. 5 is a schematic diagram of the front view of the adhesive mechanism of the present utility model;

Fig. 6 is a schematic view of the feeding mechanism of the present utility model.

In the figure: 1. a bottom plate; 2. a side plate; 3. a U-shaped frame; 4. a coating film release roller; 5. an adhesion mechanism; 501. a rotating roller; 502. a motor; 503. a gear; 504. a squeeze roll; 505. a cylinder; 506. a guide rail; 507. a cross bar; 508. a sleeve; 509. an adhesive roller; 6. a feeding mechanism; 601. a slide rail; 602. a slide block; 603. a support frame; 604. an electric push rod; 605. placing a box; 7. a cross plate; 8. and a blanking slide plate.

Detailed Description

The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

Referring to fig. 1-2, a wrapping device for producing a lithium battery pack in this embodiment includes a bottom plate 1, two side plates 2, two U-shaped frames 3, and a wrapping film releasing roller 4;

The two side plates 2 are respectively fixed on the left side and the right side of the upper surface of the bottom plate 1 through bolts, the two U-shaped frames 3 are respectively fixed on the upper end surfaces of the two side plates 2 through bolts, and the coating film release roller 4 is detachably arranged in the two U-shaped frames 3;

A transverse plate 7 is fixed between the opposite sides of the two side plates 2, and a blanking slide plate 8 is fixed inside the transverse plate 7;

the base plate 1 is provided with an adhesion mechanism 5 for coating a lithium battery, and the base plate 1 is provided with a feeding mechanism 6 for pushing the lithium battery;

wherein the adhesion mechanism 5 comprises a pressing assembly and a stretching assembly.

Referring to fig. 3-5, in order to play a role of film coating, the extrusion assembly in this embodiment includes two rotating rollers 501, the two rotating rollers 501 are all rotationally connected inside the two front side plates 2, the right ends of the two rotating rollers 501 all penetrate and extend to the right side of the right side plate 2, the left side of the left side plate 2 is fixed with a motor 502 with an output end fixedly connected with the lower rotating roller 501, the right ends of the two rotating rollers 501 are all fixed with gears 503 meshed with each other, the outer sides of the two rotating rollers 501 are all fixed with extrusion rollers 504, and the coating film on the coating film releasing roller 4 is pulled, so that the coating film is attached to the front sides of the two extrusion rollers 504.

The two rotary rollers 501 are arranged in an up-down parallel manner, the two extrusion rollers 504 are sponge rollers, an electric control switch of the motor 502 is opened, the rotary rollers 501 connected with the motor 502 are driven to rotate by rotation of the output end of the motor 502, when the rotary rollers 501 at the lower side rotate, the gears 503 at the upper side are driven to rotate by rotation of the gears 503 at the lower side through the meshing effect, the gears 503 at the upper side and the rotary rollers 501 at the upper side are driven to rotate by rotation of the gears 503 at the lower side through the meshing effect, the gears 503 at the upper side drive the gears 503 at the upper side to rotate by rotation of the rotary rollers 501 at the lower side, the extrusion rollers 504 at the moment are in a state of opposite rotation, the lithium battery moves to the right side of the two extrusion rollers 504 from the front side through opposite rotation of the two extrusion rollers 504, the blanking slide plate 8 comprises a sloping plate and two flat plates, limiting plates are respectively fixed on the front side and the rear side of the sloping plate, the two flat plates are respectively fixed on the upper side and the lower side of the two flat plates, the two flat plates are respectively fixed on the two flat plates at the two sides of the lower side through the same, the two flat plates are fixed on the two opposite sides of the two flat plates are respectively located on the two lateral sides of the two flat plates, and are respectively fixed on the two lateral plates are located on the two sides of the two lateral plates and are respectively located on the two sides of the two lateral plates and are opposite to the two sides of the two lateral plates are fixed on the two sides are located on the opposite sides.

Further, when the lithium battery is moving, the coating film below the lithium battery is attached to the lower surface of the lithium battery, and meanwhile, the coating film outside the coating film release roller 4 is pulled out, so that the coating film above the lithium battery is attached to the upper surface of the lithium battery.

It should be noted that, when the two squeeze rolls 504 rotate in opposite directions, the lithium battery with the film being coated is conveyed to the blanking slide plate 8, and when the two squeeze rolls 504 rotate in opposite directions, the film is squeezed at the same time, so that air between the film and the lithium battery is effectively discharged.

The stretching assembly comprises two cylinders 505, the two cylinders 505 are hinged on the left side and the right side of the upper surface of the bottom plate 1 through hinge shafts respectively, guide rails 506 are fixed on the opposite sides of the two side plates 2, a cross rod 507 is connected between the opposite sides of the two guide rails 506 in a sliding manner, an electric control switch of the two cylinders 505 is turned on, the output ends of the cylinders 505 extend out to push the connected sleeve 508 and the cross rod 507 to move upwards, the outer side of the cross rod 507 is rotationally connected with the sleeve 508, the cross rod 507 moves along the guide rails 506 and moves between the two extrusion rollers 504, the output ends of the two cylinders 505 are hinged with the two sleeves 508 through hinge shafts respectively, the outer side of the cross rod 507 is rotationally connected with an adhesion roller 509 for adhering a coating film, when the cross rod 507 moves obliquely and moves inwards, the adhesion roller 509 is adhered to the coating film, and when the cross rod 507 contacts with the inner top wall of the oblique guide groove, the adhesion roller 509 is simultaneously adhered to the outer side of the two extrusion rollers 504, and the coating film is simultaneously extruded, so that the coating film is firmly adhered to the outer side of the adhesion roller 509.

The guide rail 506 comprises a vertical guide groove and an inclined guide groove, the vertical guide groove and the inclined guide groove are formed in the guide rail 506 and are mutually communicated, the output ends of the two cylinders 505 are controlled to retract, the cross rod 507 moves downwards along the guide rail 506, the coating film is in a tight state, and the upper end face of the inclined guide groove is located on the transverse central axis between the opposite sides of the two extrusion rollers 504.

Therefore, in the adhesion mechanism 5, the motor 502 drives the two squeeze rollers 504 to rotate oppositely, and the squeeze rollers 504 squeeze and adhere the coating film, so that the coating film is firmly adhered to the outer side of the lithium battery, and the adhesion quality between the coating film and the lithium battery is ensured.

Referring to fig. 6, in order to play a role in pushing a lithium battery, the feeding mechanism 6 in this embodiment includes two slide rails 601, the two slide rails 601 are respectively fixed on the left and right sides of the upper surface of the bottom plate 1, the outer sides of the two slide rails 601 are slidably connected with sliding blocks 602, the same supporting frame 603 is fixed on the upper end surfaces of the two sliding blocks 602, an electric push rod 604 with an output end fixedly connected with the supporting frame 603 is fixed on the upper surface of the bottom plate 1, an electric control switch of the electric push rod 604 is turned on, the output end of the electric push rod 604 stretches out to drive the supporting frame 603 connected with the electric push rod to move, the two sliding blocks 602 are driven by the supporting frame 603 to slide on the outer sides of the two slide rails 601, a placing box 605 for placing a storage battery is fixed on the upper end surface of the supporting frame 603, and when the lithium battery is subjected to film coating treatment, the lithium battery is placed inside the placing box 605.

The length of the placement box 605 is smaller than that of the storage battery, the placement box 605 is in a cuboid shape which is hollow in the inside and is lacking in the upper end face and the rear side face, and the inner bottom wall of the placement box 605 and the upper end face of the lower inclined guide groove are located on the same transverse line.

When the supporting frame 603 moves, the placement box 605 on the supporting frame 603 moves toward the two squeeze rollers 504, so that the rear side of the lithium battery inside the placement box 605 is adhered to the coating film, a part of the coating film is located below the lithium battery, and the lithium battery is inserted between the two squeeze rollers 504.

Therefore, the feeding mechanism 6 can accurately control the positions of the lithium battery and the coating film through the electric push rod 604, the support frame 603 and other devices, so that the coating film can be ensured to be positioned correctly on the lithium battery, and the coverage area is uniform.

The working principle of the embodiment is as follows:

(1) When the lithium battery is subjected to film coating treatment, the lithium battery is firstly placed in the placement box 605, the coating film on the coating film release roller 4 is pulled, the coating film is attached to the front sides of the two extrusion rollers 504, the electric control switches of the two air cylinders 505 are turned on, the output ends of the air cylinders 505 extend out to push the connected sleeve 508 and the cross rod 507 to move upwards, the cross rod 507 moves along the guide rail 506 and moves between the two extrusion rollers 504, when the cross rod 507 moves in the obliquely moving mode, the adhesion roller 509 is attached to the coating film, when the cross rod 507 contacts with the inner top wall of the obliquely moving guide groove, the adhesion roller 509 is attached to the outer sides of the two extrusion rollers 504 at the same time, the coating film is extruded at the same time, the coating film is firmly attached to the outer sides of the adhesion roller 509, at the moment, the output ends of the two air cylinders 505 are controlled to retract, the cross rod 507 moves downwards along the guide rail 506, and the coating film is in a tight state at the moment.

(2) Opening the electric control switch of electric putter 604, the output of electric putter 604 stretches out and drives the support frame 603 that is connected with it and move, drive the outside of two slide rails 601 through the support frame 603 and slide, place box 605 on the support frame 603 and move towards the direction of two squeeze rolls 504 simultaneously, make place the lithium cell rear side and the tectorial membrane bonding of inside lithium cell of box 605, a part of tectorial membrane is located the below of lithium cell, and the lithium cell inserts between two squeeze rolls 504, open the electric control switch of motor 502 simultaneously this, the output rotation of motor 502 drives the rotatory roller 501 rotation that is connected with it, when the rotatory roller 501 of downside rotates, drive the gear 503 of upside and the rotatory roller 501 rotation of upside when the rotatory roller 503 of downside, the squeeze roll 504 in the state of counter-rotating this moment, through the counter-rotating of two squeeze rolls 504 and then make the lithium cell follow the front side of two squeeze rolls 504 to the right side of two squeeze rolls 504, when the lithium cell is in the lithium cell and is moving, laminate the lithium cell below the tectorial membrane is located the laminating membrane in the middle of lithium cell, and when the laminating membrane is located the opposite to the battery side, the laminating film is still carried out to the laminating roller 8 when the laminating the lithium cell, the laminating membrane is carried out on the opposite side when the opposite to the battery, the laminating membrane is coated on the surface when the opposite roll 8 is still coated, can be accomplished, the laminating the lithium cell is coated on the surface when the surface is coated with lithium cell is coated.

It is noted that relational terms such as first and second, and the like are used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Moreover, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising one … …" does not exclude the presence of other like elements in a process, method, article, or apparatus that comprises the element.

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

Claims

1. Cladding device is used in lithium cell group production, including bottom plate (1), two curb plates (2), two U type framves (3) and coating release roller (4), its characterized in that:

The two side plates (2) are respectively fixed on the left side and the right side of the upper surface of the bottom plate (1) through bolts, the two U-shaped frames (3) are respectively fixed on the upper end surfaces of the two side plates (2) through bolts, and the coating film release roller (4) is detachably arranged in the two U-shaped frames (3);

A transverse plate (7) is fixed between the opposite sides of the two side plates (2), and a blanking slide plate (8) is fixed inside the transverse plate (7);

An adhesion mechanism (5) for coating a film on the lithium battery is arranged on the bottom plate (1), and a feeding mechanism (6) for pushing the lithium battery is arranged on the bottom plate (1);

Wherein the adhesion mechanism (5) comprises a pressing component and a stretching component.

2. The cladding device for producing a lithium battery pack according to claim 1, wherein: the extrusion assembly comprises two rotating rollers (501), wherein the two rotating rollers (501) are all rotationally connected inside the two side plates (2) at the front side, the two right ends of the rotating rollers (501) all penetrate through and extend to the right side of the right side plate (2), the left side of the side plate (2) is fixedly provided with an output end and a motor (502) fixedly connected with the lower side rotating roller (501), the two right ends of the rotating rollers (501) are both fixedly provided with gears (503) meshed with each other, and the two extrusion rollers (504) are all fixed on the outer sides of the rotating rollers (501).

3. The cladding device for producing a lithium battery pack according to claim 2, wherein: the two rotating rollers (501) are arranged in parallel up and down, and the two squeeze rollers (504) are sponge rollers.

4. The cladding device for producing a lithium battery pack according to claim 2, wherein: a gap for passing a lithium battery is reserved between the two extrusion rollers (504), and the height of the gap is smaller than the thickness of the storage battery.

5. The cladding device for producing a lithium battery pack according to claim 2, wherein: unloading slide (8) are including swash plate and two dull and stereotyped, swash plate and dull and stereotyped front and back both sides all are fixed with the limiting plate, two the dull and stereotyped upper and lower both sides at the swash plate are fixed respectively, and the downside the dull and stereotyped upper surface at the bottom plate is fixed through the stand, and the upside the inside at diaphragm (7) is fixed to the dull and stereotyped, and is located same horizontal line with the horizontal axis of downside squeeze roll (504), two be fixed with two and be located the connecting plate of both sides about two squeeze rolls (504) respectively between the opposite one side of curb plate (2).

6. The cladding device for producing a lithium battery pack according to claim 2, wherein: the stretching assembly comprises two cylinders (505), wherein the two cylinders (505) are hinged to the left side and the right side of the upper surface of a bottom plate (1) through hinge shafts respectively, guide rails (506) are fixed to opposite sides of the side plates (2), a cross rod (507) is connected between opposite sides of the guide rails (506) in a sliding mode, sleeves (508) are connected to the outer sides of the cross rods (507) in a rotating mode, the output ends of the two cylinders (505) are hinged to the two sleeves (508) through hinge shafts respectively, and adhesive rollers (509) used for bonding wrapping films are connected to the outer sides of the cross rods (507) in a rotating mode.

7. The cladding device for producing a lithium battery pack according to claim 6, wherein: the guide rail (506) comprises a vertical guide groove and an inclined guide groove, the vertical guide groove and the inclined guide groove are formed in the guide rail (506) and are communicated with each other, and the upper end face of the inclined guide groove is located on the transverse central axis between the opposite sides of the two extrusion rollers (504).

8. The cladding device for producing a lithium battery pack according to claim 7, wherein: the feeding mechanism (6) comprises two sliding rails (601), the two sliding rails (601) are respectively fixed on the left side and the right side of the upper surface of the bottom plate (1), the two sliding rails (601) are respectively connected with a sliding block (602) in a sliding mode, the same supporting frame (603) is fixed on the upper end face of the sliding block (602), an electric push rod (604) with an output end fixedly connected with the supporting frame (603) is fixed on the upper surface of the bottom plate (1), and a placing box (605) for placing a storage battery is fixed on the upper end face of the supporting frame (603).

9. The cladding device for producing a lithium battery pack according to claim 8, wherein: the length of placing box (605) is less than the length of battery, the shape of placing box (605) is the cuboid that inside cavity and up end and trailing flank all lack, the interior bottom wall of placing box (605) is located same transverse line with the up end of downside skew direction guide groove.