CN220652064U

CN220652064U - Device for wrapping Mylar film on short side of battery cell

Info

Publication number: CN220652064U
Application number: CN202322259640.1U
Authority: CN
Inventors: 沈彪; 翁超; 丘小越
Original assignee: Shenzhen Huadunda Laser Intelligent Equipment Co ltd
Current assignee: Shenzhen Huadunda Laser Intelligent Equipment Co ltd
Priority date: 2023-08-22
Filing date: 2023-08-22
Publication date: 2024-03-22
Anticipated expiration: 2033-08-22

Abstract

The utility model discloses a device for wrapping Mylar film on a short side of a battery cell, and relates to the technical field of battery production mechanical automation. The battery cell comprises side hot melting assemblies, wherein the side hot melting assemblies are used for wrapping mylar films located on the upper side of the battery cell on two sides of the battery cell, each side hot melting assembly comprises a first mounting plate, a left coating structure, a right coating structure, a second mounting plate and the like, the first mounting plate is provided with the left coating structure and the right coating structure, the second mounting plate is provided with a pressing structure and a driving piece, the driving piece is used for driving the left coating structure and the right coating structure to move along the first mounting plate, and the hot melting structures are connected with the left coating structure and the right coating structure through a third mounting plate. The utility model has the beneficial effects that the coating plate and the lower coating plate are fixed by bolts, so that the replacement is convenient, and the operation is simple. And the distance between the two coating plates is adjusted through the coating driving piece, and the distance between the two lower coating plates is adjusted through the lower coating plates, so that the coating plate spacing can meet the coating requirements of the electric cores with different specifications.

Description

Device for wrapping Mylar film on short side of battery cell

Technical Field

The utility model relates to the technical field of mechanical automation of battery production, in particular to a device for wrapping Mylar films on short sides of battery cells.

Background

In the global dual-carbon background, new energy sources become the main direction of global development. With the rapid development of new energy automobile industry and energy storage industry in China, the lithium battery technology has been rapidly developed in recent years as a power source and an energy storage battery core of the new energy automobile. Meanwhile, the requirements for lithium batteries are continuously increasing due to the rapid development of industries such as electric vehicles, electric tools, energy storage and the like.

In the production process of the battery cell, in order to protect the insulation between the battery cell and the aluminum shell, a layer of insulation film, namely Mylar film, needs to be coated on the surface of the battery cell, and the coating quality has important influence on the performance and safety of the battery cell, so that the coating of the insulation film is a key process in the production and manufacturing process of the battery cell.

The film coating device in the prior art can only pack the batteries with fixed sizes by using the insulating film, if a manufacturer needs to pack the batteries with different sizes, the film coating device has poor universality, and a plurality of packaging machine platforms need to be modified or configured for the film coating device, so that the production time of the batteries is prolonged, the yield of the batteries is reduced, and the preparation cost of the batteries is increased.

Disclosure of Invention

The utility model aims to solve the problem of low universality of a coating device in the prior art, and provides a device for coating Mylar films on short sides of battery cells.

In order to achieve the above purpose, the utility model adopts the following technical scheme: an apparatus for cell short side wrapping Mylar film, comprising:

a mounting frame;

the side face hot-melting assembly is positioned on the mounting frame and used for wrapping mylar films positioned on the upper side of the battery cell on two sides of the battery cell and carrying out hot melting on the mylar films, the side face hot-melting assembly comprises a first mounting plate, a left and right wrapping structure, a second mounting plate, a pressing structure, a driving piece, a hot-melting structure and a third mounting plate, wherein the left and right wrapping structure is used for wrapping mylar films positioned on the upper side of the battery cell on two sides of the battery cell, the pressing structure is used for positioning the battery cell, the driving piece is used for adjusting the distance between the hot-melting structure and the left and right wrapping structure and the battery cell, the hot-melting structure and the third mounting plate are used for carrying out hot melting on the wrapped mylar films, the left and right wrapping structure and the second mounting plate are arranged on the first mounting plate, the driving piece is used for driving the left and right wrapping structure to move along the first mounting plate, and the hot-melting structure is connected with the left and right wrapping structure through the third mounting plate;

the battery cell circulating jig is positioned below the side hot melting assembly and used for clamping the battery cells, and a through groove which is arranged around the battery cells is formed in the battery cell circulating jig;

and the lower film coating assembly is positioned at one side of the core circulation jig and used for coating the mylar film positioned at the lower side of the battery cell on two sides of the battery cell.

Further, the left and right coating structures comprise a first coating mounting plate, a coating guide rail, a coating driving piece and a coating plate, two coating driving pieces are symmetrically arranged on the first coating mounting plate, the coating driving pieces are connected with the coating plate, the coating plate space is perpendicular to the battery cell circulation jig, the first coating mounting plate is connected with the first mounting plate through the coating guide rail, and the first coating plate moves along the coating guide rail under the driving of the driving piece.

Further, the compressing structure comprises a supporting column, a compressing driving piece and a compressing plate, wherein the compressing driving piece is connected with the second mounting plate through the supporting column, and the compressing driving piece is used for driving the compressing plate to fix the battery cell and prevent the battery cell from being displaced in the coating process.

Further, the hot melting structure comprises a hot melting mounting plate, a hot melting driving piece, a hot melting guide rail and a hot melting device, wherein two ends of the hot melting mounting plate are connected with a third mounting plate, the hot melting mounting plate is provided with the hot melting guide rail and the hot melting driving piece, the hot melting driving piece is connected with the hot melting device positioned on the hot melting guide rail, and the hot melting driving piece is used for driving the hot melting device to move along the hot melting guide rail.

Further, lower coating subassembly includes second coating mounting panel, lower coating driving piece, lower coating board, lift driving piece and mounting bracket, the symmetry is provided with a pair of lower coating driving piece on the second coating mounting panel, lower coating driving piece is connected with lower coating board, and lower coating driving piece is used for driving lower coating board relative motion, lift driving piece sets up on lower coating mounting bracket and lift driving piece's output is connected with the second coating mounting panel, and lift driving piece is used for driving second coating mounting panel and is close to or keep away from core circulation tool.

Further, the battery cell circulation jig comprises a battery cell mounting frame, a battery cell placing plate, side positioning assemblies and a top cover clamping jaw, wherein the battery cell placing plate used for placing the battery cell is arranged on the mounting frame, a through groove used for allowing the lower coating assembly to pass through is formed in the battery cell placing plate, and the side positioning assemblies used for clamping and fixing two sides of the battery cell and the top cover clamping jaw used for clamping and fixing the top cover of the battery cell are further arranged on the mounting frame.

Further, lower diolame driving piece includes movable guide rail, flexible air pump and movable block, flexible air pump is used for driving the movable block and removes along movable guide rail, movable guide rail sets up along mounting panel length direction.

Further, limiting blocks are arranged at two ends of the movable guide rail in the length direction.

After the technical scheme is adopted, the utility model has the beneficial effects that:

the film coating plate and the lower film coating plate are fixed by bolts, so that the replacement is convenient, and the operation is simple. And the distance between the two coating plates is adjusted through the coating driving piece, and the distance between the two lower coating plates is adjusted through the lower coating plates, so that the coating plate spacing can meet the coating requirements of the electric cores with different specifications.

The mylar film package short-side hot melt mold group has the advantages of high automation degree, consistent action and manpower and material resource saving.

The battery cell is fixed through the compression structure, so that the battery cell is prevented from moving in the film coating process, and the final film coating result is influenced.

Drawings

In order to more clearly illustrate the embodiments of the utility model or the technical solutions of the prior art, the drawings which are used in the description of the embodiments or the prior art will be briefly described, it being obvious that the drawings in the description below are only some embodiments of the utility model, and that other drawings can be obtained according to these drawings without inventive faculty for a person skilled in the art.

Fig. 1 is a schematic structural view of the present utility model.

FIG. 2 is a schematic view of a side hot melt assembly according to the present utility model

FIG. 3 is a schematic view of the structure of the left and right envelope junctions in the present utility model

FIG. 4 is a schematic view of a compacting structure according to the present utility model

FIG. 5 is a schematic view of a hot melt structure according to the present utility model

FIG. 6 is a schematic view of the structure of the lower envelope assembly of the present utility model

Fig. 7 is a schematic structural diagram of a cell circulation jig according to the present utility model

Reference numerals illustrate: the mounting bracket 1, the side hot-melt assembly 2, the first mounting plate 21, the left and right coating structures 22, the first coating mounting plate 221, the coating guide rail 222, the coating driving piece 223, the coating plate 224, the second mounting plate 23, the pressing structure 24, the supporting column 241, the pressing driving piece 242, the pressing plate 243, the driving piece 25, the hot-melt structure 26, the hot-melt mounting plate 261, the hot-melt driving piece 262, the hot-melt guide rail 263, the hot-melt device 264, the third mounting plate 27, the cell circulation jig 3, the cell mounting bracket 31, the cell placing plate 32, the through groove 321, the side positioning assembly 33, the top cover clamping jaw 34, the lower coating assembly 4, the second coating mounting plate 41, the lower coating driving piece 42, the moving guide rail 421, the telescopic air pump 422, the moving block 423, the limiting block 424, the lower coating plate 43, the lifting driving piece 44, and the lower coating mounting bracket 45.

Description of the embodiments

Referring to fig. 1-2, the technical scheme adopted in the specific embodiment is as follows: an apparatus for cell short side wrapping Mylar film, comprising:

a mounting frame 1;

the side hot melting assembly 2 is positioned on the mounting frame 1 and is used for wrapping mylar films positioned on the upper side of the battery cell on two sides of the battery cell and carrying out hot melting on the mylar films; the side hot-melting assembly 2 comprises a first mounting plate 21, a left and right coating structures 22 for folding mylar films on the upper side of the battery cell to two sides of the battery cell, a second mounting plate 23, a pressing structure 24 for positioning the battery cell, a driving piece 25 for controlling the distance between the hot-melting structure 26 and the distance between the left and right coating structures 22 and the battery cell, a hot-melting structure 26 for hot-melting the mylar films after coating, and a third mounting plate 27;

the battery cell circulation jig 3 is positioned below the side hot melting assembly 2 and used for clamping the battery cells, and a through groove 321 which is arranged around the battery cells is formed in the battery cell circulation jig 3;

and the lower film coating assembly 4 is positioned at one side of the core circulation jig 3 and is used for attaching mylar film bags positioned at the lower side of the battery cells to two sides of the battery cells.

One side of a specific first mounting plate 21 is fixedly connected with the mounting frame 1, the other side is movably connected with the left and right coating structures 22, and a second mounting plate 23 vertical to the first mounting plate is fixedly mounted at the top end. The second mounting plate 23 is provided with a driving member 25 and a compressing structure 24, and in this embodiment, the driving member 25 is a telescopic cylinder. The driving piece 25 is vertically installed on the mounting plate, and the output end passes through the second mounting plate 23 to be connected with the left and right coating structures 22, and the driving piece 25 is used for driving the left and right coating structures 22 to move along the mounting plate. Two third mounting plates 27 are symmetrically arranged at the two ends of the left and right coating structures 22, and the left and right ends of the hot-melt structure 26 are connected with the left and right coating structures 22 through the third mounting plates 27.

When the device is in operation, the battery cell circulation jig 3 is moved between the side hot melting assembly 2 and the lower coating assembly 4 through a conveying device (not shown in the figure), and the clamping of the battery cells is released. The pressing structure 24 starts to fix the battery cell, so that the battery cell is prevented from moving in the film coating process, and the final film coating result is prevented from being influenced. After the cell is fixed, the lower film-coating assembly 4 is lifted upwards and penetrates through the through groove 321, and the mylar film positioned at the lower end of the cell is folded, so that the mylar film is attached to the side walls at the left end and the right end of the cell. Then the driving piece 25 is started to drive the left and right coating structures 22 to move downwards, and the left and right coating structures 22 turn over and fold over the mylar film positioned at the top end of the battery cell in the moving process. The lower envelope assembly 4 is retracted and the left and right envelope structures 22 are pressed against the wrapped short side mylar film. Finally, the thermal fusion structure 26 carries out thermal fusion on the covered mylar film, so that the mylar film is covered on the outer side of the battery cell, and the battery cell is protected.

Referring to fig. 3, the left and right capsule structures 22 include a first capsule mounting plate 221, a capsule guide rail 222, a capsule drive 223, and a capsule plate 224. Two coating driving pieces 223 are symmetrically installed on one side of the first coating mounting plate 221, the output end of the coating driving piece 223 is connected with a coating plate 224, the coating plate 224 is perpendicular to the battery cell circulation jig 3, and the coating driving piece 223 is a telescopic cylinder in the embodiment. The other side of the first envelope mounting plate 221 is provided with an envelope guide rail 222 arranged vertically, and the first envelope mounting plate 221 is connected with the first mounting plate 21 through the envelope guide rail 222. The upper end of the first film coating mounting plate 221 is further connected to a driving member 25, and the driving member 25 is used for driving the first film coating plate 224 to move along the film coating guide rail 222.

In a specific operation, after the lower encapsulation is completed and the mylar film on the lower side of the cell is folded, the driving member 25 pushes the first encapsulation mounting plate 221 to move down along the encapsulation guide rail 222 to approach the cell, and in the approach process, the encapsulation driving member 223 adjusts the distance between the two encapsulation plates 224 so that the distance between the two encapsulation plates is greater than or equal to the distance between the lower encapsulation plates 43. The film-coating plate 224 first folds the mylar film on the upper end of the cell so that it overlaps the lower film-coating plate 43. The lower capsule assembly 4 is then reset and the lower capsule plate 43 is relieved of the low pressure to the lower mylar film. After the lower film coating plate 43 is reset, the film coating motor is started to reduce the distance between the two film coating plates 224, so that the two film coating plates 224 clamp the mylar films with two overlapped sides.

Referring to fig. 4, the pressing structure 24 includes a support column 241, a pressing driving member 242, and a pressing plate 243. The bottom end of the compressing driving piece 242 is connected with the second mounting plate 23 through two parallel supporting columns 241, and the output end of the compressing driving piece 242 is connected with a compressing plate 243, and in this embodiment, the compressing driving piece 242 is a telescopic air pump 422. The compressing plate 243 is parallel to the cell circulation fixture 3, and the specification of the compressing plate 243 is smaller than or equal to the specification of the cell.

In specific operation, the cell circulation jig 3 moves to the lower part of the left and right coating structures 22, the cell is positioned below the pressing plate 243, and the cell circulation jig 3 releases the clamping of the cell. After the clamping is released, the pressing driving piece 242 stretches so that the pressing plate 243 presses and fixes the battery cell from the top. The side edges of the battery cells are left out so that the subsequent folding of the mylar film by the left and right coating structures 22 and the lower coating structure is facilitated.

Referring to fig. 5, the hot-melt structure 26 includes a hot-melt mounting plate 261, a hot-melt driving member 262, a hot-melt rail 263, and a hot-melt device 264. Two ends of the hot-melt mounting plate 261 are respectively connected with two third mounting plates 27. The hot melt mounting plate 261 is provided with a hot melt guide 263 and two symmetrically arranged hot melt driving pieces 262 along the length direction of the hot melt mounting plate 261. Two symmetrically arranged hot-melt devices 264 are arranged on the hot-melt guide rail 263, two hot-melt driving pieces 262 are respectively connected with the two hot-melt devices 264 on the hot-melt guide rail 263, and the hot-melt driving pieces 262 are used for driving the hot-melt devices 264 to move along the hot-melt guide rail 263.

In particular operation, the hot melt structure 26 descends with the first capsule mounting plate 221 and the hot melt 264 is located just to the left and right sides of the cell after reaching the position. After the other components complete the folding of the mylar film, the hot-melt driving member 262 drives the two hot-melt devices 264 to approach each other to hot-melt the side edges of the mylar film, so that the mylar film is coated on the outer side of the battery cell, and the battery cell is protected.

Referring to fig. 6, the lower envelope assembly 4 includes a second envelope mounting plate 41, a lower envelope drive 42, a lower envelope plate 43, a lift drive 44, and a mounting bracket 1. The second coating mounting plate 41 is distributed along the length direction of the battery core circulation jig 3, and two lower coating driving members 42 are symmetrically arranged on the second coating mounting plate 41. The lower film coating driving member 42 is connected with the lower film coating 43224, the lower film coating driving member 42 is used for driving the two lower film coating plates 43 to move relatively, and the lower film coating plates 43 are perpendicular to the second film coating mounting plate 41. The lifting driving member 44 is arranged on the lower film coating mounting frame 45, the output end of the lifting driving member 44 is connected with the second film coating mounting plate 41, and the lifting driving member 44 is used for driving the second film coating mounting plate 41 to be close to or far away from the battery cell circulation jig 3. The lower capsule mounting frame 45 is secured to the workstation by external mounting means (not shown).

More specifically, the lower envelope driving member 42 includes a moving rail 421, a telescopic air pump 422, a moving block 423, and a stopper 424. The movable guide rail 421 is located on the second film-coating mounting plate 41, and limiting blocks 424 with limiting function are installed at two ends of the movable guide rail 421. The telescopic air pump 422 is installed on the second film-coating installation plate 41, and the output end of the telescopic air pump 422 is connected with the moving block 423 movably installed on the moving guide rail 421. The movable block 423 is connected with the lower film coating plate 43 through bolt installation and is fixedly connected through bolts, so that the lower film coating plate 43 conforming to the specification of the battery cell can be replaced according to the specification of the battery cell, and the application range of the equipment is expanded.

In a specific operation, the lifting driving member 44 stretches and lifts the second coating mounting plate 41, and the telescopic air pump 422 adjusts the position of the moving block 423 on the moving guide rail 421 in the lifting process, so that the distance between the two lower coating plates 43 is adjusted, and the distance between the two lower coating plates is equal to the distance between two side walls of the battery cell. After the distance between the two lower film coating plates 43 is adjusted, the lower film coating plates 43 penetrate through the through grooves 321 to fold the mylar film at the lower end of the battery cell under the drive of the lifting driving piece 44, so that the mylar film is attached to the side walls at the left end and the right end of the battery cell.

Referring to fig. 7, the cell circulation jig 3 includes a cell mounting frame 31, a cell placement plate 32, a side positioning assembly 33, and a top cover clamping jaw 34. Two battery cell placing plates 32 for placing battery cells are symmetrically arranged on the mounting frame 1, the battery cell placing plates 32 are connected with the mounting frame 1 in a bolt fixing mode, and therefore the battery cell placing plates 32 conforming to the specification of the battery cells can be replaced according to the specification of the battery cells, and the application range of the equipment is expanded.

The cell placing plate 32 is provided with a through groove 321 for the lower envelope assembly 4 to pass through, the through groove 321 is U-shaped, and the specification of the through groove 321 is matched with the specification of the cell. The mounting frame 1 is also provided with side positioning assemblies 33 for clamping and fixing two sides of the battery cell and a top cover clamping jaw 34 for clamping and fixing a top cover of the battery cell.

The cells are located on the cell placement plate 32 and the cells are secured to the cell placement plate 32 by side positioning assemblies 33 and top cover jaws 34. Meanwhile, the outer wall of the battery cell is parallel to or exceeds the edge of the through groove 321, so that the lower film-coating plate 43 can conveniently penetrate through the through groove 321 to fold the mylar film.

The foregoing is merely illustrative of the present utility model and not restrictive, and other modifications and equivalents thereof may occur to those skilled in the art without departing from the spirit and scope of the present utility model.

Claims

1. A device for electric core minor face package Mylar film, its characterized in that: it comprises

A mounting frame (1);

the side hot-melt assembly (2) is located on the mounting frame (1) and used for wrapping mylar films located on the upper side of the battery cell on two sides of the battery cell and carrying out hot-melt on the mylar films, the side hot-melt assembly (2) comprises a first mounting plate (21), a left and right wrapping structure (22), a second mounting plate (23), a pressing structure (24), a driving piece (25), a hot-melt structure (26) and a third mounting plate (27), the left and right wrapping structure (22) and the second mounting plate (23) are arranged on the first mounting plate (21), a pressing structure (24) and a driving piece (25) are arranged on the second mounting plate (23), the driving piece (25) is used for driving the left and right wrapping structure (22) to move along the first mounting plate (21), and the hot-melt structure (26) is connected with the left and right wrapping structure (22) through the third mounting plate (27).

The battery cell circulating jig (3) is positioned below the side hot melting assembly (2) and used for clamping the battery cells, and a through groove (321) which is arranged around the battery cells is formed in the battery cell circulating jig (3);

and the lower film coating assembly (4) is positioned at one side of the core circulation jig (3) and is used for coating and attaching mylar films positioned at the lower side of the battery cell to the two sides of the battery cell.

2. The device for wrapping Mylar film on short sides of electric core according to claim 1, characterized in that the left and right wrapping structure (22) comprises a first wrapping mounting plate (221), a wrapping guide rail (222), a wrapping driving piece (223) and a wrapping plate (224), two wrapping driving pieces (223) are symmetrically arranged on the first wrapping mounting plate (221), the wrapping driving piece (223) is connected with the wrapping plate (224), the first wrapping mounting plate (221) is connected with the first mounting plate (21) through the wrapping guide rail (222), and the first wrapping plate (224) moves along the wrapping guide rail (222) under the driving of the driving piece (25).

3. A device for short side cell wrap Mylar film according to claim 1, wherein: the compressing structure (24) comprises a supporting column (241), a compressing driving piece (242) and a compressing plate (243), the compressing driving piece (242) is connected with the second mounting plate (23) through the supporting column (241), and the compressing driving piece (242) is used for driving the compressing plate (243) to fix the battery cell.

4. A device for short side cell wrap Mylar film according to claim 1, wherein: the hot-melt structure (26) comprises a hot-melt mounting plate (261), a hot-melt driving piece (262), a hot-melt guide rail (263) and a hot-melt device (264), wherein two ends of the hot-melt mounting plate (261) are connected with a third mounting plate (27), the hot-melt mounting plate (261) is provided with the hot-melt guide rail (263) and the hot-melt driving piece (262), the hot-melt driving piece (262) is connected with the hot-melt device (264) arranged on the hot-melt guide rail (263), and the hot-melt driving piece (262) is used for driving the hot-melt device (264) to move along the hot-melt guide rail (263).

5. A device for short side cell wrap Mylar film according to claim 1, wherein: lower coating subassembly (4) include second coating mounting panel (41), lower coating driving piece (42), lower coating lamina (43), lift driving piece (44) and lower coating mounting bracket (45), the symmetry is provided with a pair of lower coating driving piece (42) on second coating mounting panel (41), lower coating driving piece (42) are connected with lower coating lamina (43), and lower coating driving piece (42) are used for driving lower coating lamina (43) relative motion, lift driving piece (44) set up on lower coating mounting bracket (45) and lift driving piece (44) output is connected with second coating mounting panel (41), and lift driving piece (44) are used for driving second coating mounting panel (41) and are close to or keep away from electric core circulation tool (3).

6. A device for short side cell wrap Mylar film according to claim 1, wherein: the battery cell circulation jig (3) comprises a battery cell mounting frame (31), a battery cell placing plate (32), side positioning assemblies (33) and a top cover clamping jaw (34), wherein the battery cell placing plate (32) is arranged on the mounting frame (1), a through groove (321) for allowing a lower coating assembly (4) to pass through is formed in the battery cell placing plate (32), and the side positioning assemblies (33) used for clamping and fixing two sides of a battery cell and the top cover clamping jaw (34) used for clamping and fixing a top cover of the battery cell are further arranged on the mounting frame (1).

7. The device for short side cell wrap Mylar film of claim 5, wherein: the lower coating driving piece (42) comprises a moving guide rail (421), a telescopic air pump (422) and a moving block (423), wherein the telescopic air pump (422) is used for driving the moving block (423) to move along the moving guide rail (421), and the moving guide rail (421) is arranged along the length direction of the second coating mounting plate (41).

8. The device for short side cell wrapping Mylar film of claim 7, wherein: limiting blocks (424) are arranged at two ends of the movable guide rail (421) in the length direction.