CN215096235U

CN215096235U - Cutting mechanism, film stripping device and battery piece pressing equipment

Info

Publication number: CN215096235U
Application number: CN202120740220.3U
Authority: CN
Inventors: 韩晓航; 郑亚; 王磊; 李新军
Original assignee: Cybrid Technologies Inc
Current assignee: Cybrid Technologies Inc
Priority date: 2021-04-12
Filing date: 2021-04-12
Publication date: 2021-12-10
Anticipated expiration: 2031-04-12

Abstract

The utility model belongs to the technical field of no main grid battery piece production, a cut mechanism, shell membrane device and battery piece lamination equipment is disclosed. This cut mechanism is used for cutting the membrane material of two upper and lower surface bondings of sheet, and the membrane material includes from the type membrane and is located from the tie coat between type membrane and the sheet, cuts the mechanism and includes: a first stage and a second stage which can relatively move up and down to press and hold the sheet and the film between the first stage and the second stage; the first cutter and the second cutter are fixedly connected to the first carrying platform and the second carrying platform respectively; the first cutter and the part, located outside the outline range of the sheet, of the film material bonded to the upper surface of the sheet are arranged oppositely, and the second cutter and the part, located outside the outline range of the sheet, of the film material bonded to the lower surface of the sheet are arranged oppositely. The utility model provides a cut mechanism, shell membrane device and battery piece lamination equipment and can cut the carrier film, make the tie coat of carrier film form the incision to peel off from the type membrane easily.

Description

Cutting mechanism, film stripping device and battery piece pressing equipment

Technical Field

The utility model relates to a no main grid battery piece production technical field especially relates to a cut mechanism, shell membrane device and battery piece lamination equipment.

Background

In the solder strip process for fixing a non-main grid battery plate by using a carrier film, the carrier film generally adopts a double-layer structure, namely, the upper layer is a supporting layer prepared by high-melting-point resin, the lower layer is an adhesive layer prepared by low-melting-point resin, and the carrier film can be directly laminated with the battery plate by virtue of the supporting layer. After lamination, due to the fact that the difference between physical properties of the supporting layer and the packaging adhesive film is large, delamination easily occurs to the photovoltaic module in the long-term operation aging process of the photovoltaic module, poor connection of a solder strip and the like are caused, and the reliable use of the photovoltaic module is affected.

As an improvement, a novel carrier film using a high-melting-point release film to replace a supporting layer is available at present, and the release film can be peeled off after the bonding of the carrier film, a welding strip and a battery piece is completed and before the lamination, so that the bonding layer and the packaging adhesive film belong to the same resin, the bonding property is good, the long-term aging performance is excellent, and the long-term reliable use of the photovoltaic module can be effectively guaranteed.

However, when the novel carrier film is used, since the carrier film is generally obtained by slitting, the size of the release film is consistent with that of the adhesive layer, so that the release film is difficult to peel.

Therefore, the above problems need to be solved.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a cut mechanism, shell membrane device and battery piece lamination equipment to solve the problem that bonds on the sheet and is difficult for peeling off from the type membrane.

To achieve the above object, in a first aspect, the present invention provides a cutting mechanism for cutting a film material adhered to the upper and lower surfaces of a sheet, the film material includes a release film and a bonding layer between the release film and the sheet, the cutting mechanism includes:

a first stage and a second stage that can be moved relatively up and down to press the sheet and the film therebetween; and

the first cutter and the second cutter are fixedly connected to the first carrying platform and the second carrying platform respectively;

the first cutter and the part, located outside the outline range of the sheet, of the film material bonded to the upper surface of the sheet are arranged oppositely, the second cutter and the part, located outside the outline range of the sheet, of the film material bonded to the lower surface of the sheet are arranged oppositely, so that when the sheet located between the first carrying table and the second carrying table is clamped by the first carrying table and the second carrying table, the first cutter and the second cutter can respectively press and cut the film materials located on the upper surface and the lower surface of the sheet, and the bonding layers of the two film materials form continuous or discontinuous cuts.

Preferably, the cut-out extends along the contour of the sheet.

Preferably, the cutting mechanism further includes a driving portion, and the driving portion is in transmission connection with the first stage and/or the second stage so that the first stage and the second stage can move relatively.

Preferably, the first stage is capable of conveying the sheet.

Preferably, the first cutting blade and the second cutting blade are detachably connected to the first stage and the second stage, respectively.

Preferably, the first cutting knife and the second cutting knife are connected to the first stage and the second stage respectively in a position-adjustable manner.

Preferably, the first cutter and the second cutter are both made of ceramic.

Preferably, the cutting edges of the first cutter and the second cutter are provided with anti-sticking coatings.

In a second aspect, the present invention also provides a membrane peeling device, which includes:

the cutting mechanism as described above; and

and the film peeling mechanism is arranged at the downstream of the cutting mechanism and is configured to peel the release film and the part of the bonding layer, which is positioned outside the cut, from the sheet.

The third aspect, the utility model also provides a battery piece lamination equipment, it includes as above cut the mechanism, wherein:

the sheet is a battery piece;

the membrane material is a carrier membrane loaded with a welding strip;

the first carrying table and the second carrying table can be used for holding pressure for a preset time length when the sheet and the membrane are pressed.

The utility model has the advantages that:

the utility model provides a cut mechanism, shell membrane device and battery piece lamination equipment, first microscope carrier and second microscope carrier can cooperate the complex body that the pressure held battery piece and two carrier films constitute, and simultaneously, first cutter and second cutter can be respectively along with first microscope carrier and second microscope carrier remove respectively to the tie coat application pressure of two carrier films, and then make the tie coat of carrier film form the incision, borrow this notched branch and divide the effect, the redundant part that follow-up accessible tractive carrier film lies in outside the battery piece profile scope peels off whole redundant part from type membrane and tie coat easily, thereby only remain the tie coat that needs remain on the battery piece.

Drawings

Fig. 1 is a front view of a cutting mechanism in an embodiment of the present invention;

fig. 2 is a side view of a cutting mechanism in an embodiment of the present invention;

fig. 3 is a side view of another cutting mechanism in an embodiment of the present invention.

In the figure:

1. a first stage; 2. a second stage; 3. a first cutter; 4. a second cutter;

10. a battery piece; 20. a carrier film; 21. a bonding layer; 22. and (4) a release film.

Detailed Description

The present invention will be described in further detail with reference to the accompanying drawings and examples. It is to be understood that the specific embodiments described herein are merely illustrative of the invention and are not limiting of the invention. It should be further noted that, for the convenience of description, only some of the structures related to the present invention are shown in the drawings, not all of the structures.

In the description of the present invention, unless expressly stated or limited otherwise, the terms "connected," "connected," and "fixed" are to be construed broadly, e.g., as meaning permanently connected, detachably connected, or integral to one another; can be mechanically or electrically connected; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.

In the present disclosure, unless expressly stated or limited otherwise, the first feature "on" or "under" the second feature may comprise direct contact between the first and second features, or may comprise contact between the first and second features not directly. Also, the first feature being "on," "above" and "over" the second feature includes the first feature being directly on and obliquely above the second feature, or merely indicating that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature includes the first feature being directly under and obliquely below the second feature, or simply meaning that the first feature is at a lesser elevation than the second feature.

In the description of the present embodiment, the terms "upper", "lower", "right", etc. are used in an orientation or positional relationship based on that shown in the drawings only for convenience of description and simplicity of operation, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first" and "second" are used only for descriptive purposes and are not intended to have a special meaning.

As described above, after the carrier film formed by the release film and the adhesive layer is used to fix the main-gate-free battery tab solder strip, the release film needs to be peeled off from the battery tab for performing the subsequent lamination process. Because the sizes of the release film and the bonding layer are equivalent, the release film is difficult to be independently stripped when the bonding layer is remained and bonded on the battery piece, and particularly, the automatic stripping operation is difficult to be carried out by adopting mechanical equipment.

To this end, the present embodiment provides a peeling scheme for facilitating peeling of a release film, which substantially comprises the following steps:

s1, laminating the sheet-shaped bearing film with the length and/or width dimension larger than that of the battery sheet with the battery sheet, so that the bearing film and the battery sheet have redundant parts extending out of the outline range of the battery sheet after lamination;

s2, without cutting the release film, a cut is formed on the adhesive layer along the boundary between the redundant portion of the carrier film and the bonding portion of the battery piece (usually the outline of the battery piece), so that the redundant portion of the carrier film can be pulled to easily peel off the entire release film and the redundant portion of the adhesive layer, thereby leaving only the adhesive layer on the battery piece.

Furthermore, when the double-sided battery piece is produced, the upper side and the lower side of the battery piece are both provided with the bearing films and the welding strips, so that the notches can be formed twice based on the method. Preferably, in step S1, the redundant portions of the two carrier films located at the upper and lower sides of the battery piece may extend toward different directions of the battery piece, for example, the redundant portions of the two carrier films may be located at the outer sides of the wide edges of the battery piece and the long edges of the battery piece, respectively, or one of the carrier films is located at the outer sides of the wide edges of the battery piece and the other carrier film is located at the outer sides of the long edges of the battery piece. Next, in step S2, slits may be formed on both carrier films at the same time.

Of course, the above method can also be applied to the operation of removing the release film on the adhesive layer after the adhesive layer is provided on one side or both sides of the sheet of the battery cell in other forms, such as the battery cell.

To implement the above method, the present embodiment provides a cutting mechanism, which is suitable for forming a cut on the adhesive layer of the film material, so as to facilitate peeling the release film from the sheet material. The cutting mechanism will be described below by taking the battery cell as a sheet and the carrier film as a film.

Referring to fig. 1, the cutting mechanism includes a first carrying stage 1, a second carrying stage 2, a first cutting blade 3 and a second cutting blade 4, wherein the first carrying stage 1 and the second carrying stage 2 can move up and down relatively to press the battery piece 10 and the carrier film 20 therebetween. The first cutter 3 and the second cutter 4 are respectively fixedly connected to the first carrying platform 1 and the second carrying platform 2, specifically, the first cutter 3 is arranged opposite to the part, located outside the outline range of the battery piece 10, of the carrier film 20 bonded to the upper surface of the battery piece 10, and the second cutter 4 is arranged opposite to the part, located outside the outline range of the battery piece 10, of the carrier film 20 bonded to the lower surface of the battery piece 10, so that when the first carrying platform 1 and the second carrying platform 2 clamp the battery piece 10 located therebetween, the first cutter 3 and the second cutter 4 can respectively press and cut the carrier films 20 located on the upper surface and the lower surface of the battery piece 10, and the bonding layers 21 of the two carrier films 20 form a notch.

During cutting operation, the first carrying platform 1 and the second carrying platform 2 can cooperate to press and hold the composite body formed by the battery piece 10 and the two carrier films 20, meanwhile, the first cutting knife 3 and the second cutting knife 4 can respectively move along with the first carrying platform 1 and the second carrying platform 2 to respectively apply pressure to the bonding layers 21 of the two carrier films 20, so that the bonding layers 21 of the carrier films 20 form a cut, and by means of the cutting action of the cut, the whole release film 22 and the redundant parts of the bonding layers 21 can be easily peeled off by pulling the redundant parts of the carrier films 20 outside the outline range of the battery piece 10, so that only the bonding layers 21 required to be remained on the battery piece 10 are remained on the battery piece 10.

It can be understood that, in order to ensure that the release film 22 is not cut, the heights of the first cutting blade 3 and the second cutting blade 4 above the first carrier 1 and the second carrier 2 respectively should be less than the thickness of the composite body formed by the battery sheet 10 and the two carrier films 20, and the height difference is theoretically the thickness of the single-layer release film 22, and in actual operation, the height of the first cutting blade 3 and the height of the second cutting blade 4 can be adjusted by a practitioner in combination with the actual situation of the cut.

The shape of the above-mentioned incision is not limited to a continuous or discontinuous structure, that is, as shown in fig. 2 and 3, the first cutting knife 3 and the second cutting knife 4 in the present embodiment are not limited to a single elongated cutting knife or a plurality of spaced cutting knives.

In the present embodiment, the forming position of the notch, that is, the arrangement position of the first cutting knife 3 and the second cutting knife 4, can be selected according to specific production requirements, for example, if the production requirements require that the adhesive layer 21 should be flush with the contour of the battery piece 10, the positions of the first cutting knife 3 and the second cutting knife 4 are arranged such that the cutting edges thereof cut along the contour of the battery piece 10 and press the adhesive layer 21, so that the notch is formed to extend along the contour of the battery piece 10.

In order to replace the first cutting knife 3 and the second cutting knife 4 with different lengths or abrasion, the first cutting knife 3 and the second cutting knife 4 are respectively detachably connected to the first carrying platform 1 and the second carrying platform 2. Meanwhile, in order to adapt to the adjustment of the cutting position for the battery pieces 10 with different sizes, the first cutting knife 3 and the second cutting knife 4 are respectively connected to the first carrier 1 and the second carrier 2 in a position-adjustable manner, for example, array-type mounting holes capable of mounting the first cutting knife 3 and the second cutting knife 4 can be arranged on the first carrier 1 and the second carrier 2.

Furthermore, in order to prevent the first cutter 3 and the second cutter 4 from adhering to the adhesive layer 21 during cutting, the first cutter 3 and the second cutter 4 may be made of ceramic. Of course, it is also possible to avoid the adhesion of the adhesive layer 21 to the first and second cutters 3 and 4 by providing an anti-adhesion coating on the cutting edges of the first and second cutters 3 and 4 made of other materials having poor anti-adhesion properties.

In order to enable the first stage 1 and the second stage 2 to move relatively, in this embodiment, the cutting mechanism further includes a driving portion, which can be in transmission connection with the first stage 1 or the second stage 2 to raise the first stage 1 or lower the second stage 2, but of course, the driving portion can also be in transmission connection with the first stage 1 and the second stage 2 at the same time to raise the first stage 1 and lower the second stage 2 at the same time. The driving unit may be a common elevating driving mechanism, and is not limited herein.

In order to continuously perform the cutting operation on the carrier film 20 of the battery sheets 10 in batch, the first stage 1 is preferably fixed, and the surface of the first stage can be passed through a conveying structure such as a conveyor belt or a roller belt to convey the battery sheets 10, so that after the batch of battery sheets 10 is placed on the conveying structure, the battery sheets 10 can be moved into the space between the first stage 1 and the second stage 2 one by the stepping conveying structure.

After the carrier film 20 is cut by the cutting mechanism, a film peeling mechanism may be provided downstream of the cutting mechanism, and the film peeling mechanism is configured to peel off the release film 22 and the adhesive layer 21 from the battery piece 10 at portions other than the cut portions, thereby constituting a film peeling device. The film peeling mechanism may be a robot or the like capable of gripping/sucking and pulling the redundant part of the carrier film 20, and is not limited herein.

In the pressing action of the carrier film 20 and the battery piece 10, the battery piece 10 and the composite of the carrier film 20 are pressed and held by two opposite stages up and down, and the pressure is maintained for a preset time (e.g., 0.01 to 1s), the cutting process of the bonding layer 21 by the cutting mechanism in this embodiment is performed while the battery piece 10 and the carrier film 20 are pressed and fixed by the first stage 1 and the second stage 2, and the processes of the two processes can be combined, that is, the first stage 1 and the second stage 2 of the cutting mechanism in this embodiment can be directly used as a pressing stage structure of the pressing equipment of the battery piece 10, and when the carrier film 20 is preliminarily bonded on both the upper side and the lower side of the battery piece 10, the battery piece 10 can be conveyed into the cutting mechanism by the conveying structure to simultaneously complete the pressing operation of the battery piece 10 and the carrier film 20 and the cutting operation of the bonding layer 21.

It is obvious that the above embodiments of the present invention are only examples for clearly illustrating the present invention, and are not intended to limit the embodiments of the present invention. Numerous obvious variations, rearrangements and substitutions will now occur to those skilled in the art without departing from the scope of the invention. And are neither required nor exhaustive of all embodiments. Any modification, equivalent replacement, and improvement made within the spirit and principle of the present invention should be included in the protection scope of the claims of the present invention.

Claims

1. The utility model provides a cut mechanism for cut the membrane material that two upper and lower surfaces of sheet bonded, the membrane material includes from type membrane (22) and is located from type membrane (22) with tie coat (21) between the sheet, its characterized in that cuts the mechanism and includes:

a first stage (1) and a second stage (2) that can be moved up and down relative to each other to press the sheet and the film therebetween; and

the first cutting knife (3) and the second cutting knife (4) are respectively fixedly connected to the first carrying platform (1) and the second carrying platform (2);

the first cutting knife (3) and the part, located outside the outline range of the sheet, of the film material bonded to the upper surface of the sheet are arranged oppositely, the second cutting knife (4) and the part, located outside the outline range of the sheet, of the film material bonded to the lower surface of the sheet are arranged oppositely, so that when the sheet located between the first carrying table (1) and the second carrying table (2) is clamped, the first cutting knife (3) and the second cutting knife (4) can respectively press and cut the film materials located on the upper surface and the lower surface of the sheet, and the bonding layers (21) of the two film materials form continuous or discontinuous cuts.

2. The cutting mechanism of claim 1, wherein the cut-out extends along a contour of the sheet.

3. The cutting mechanism according to claim 1, further comprising a drive portion drivingly connected to the first stage (1) and/or the second stage (2) to enable relative movement of the first stage (1) and the second stage (2).

4. The cutting mechanism according to claim 1, wherein the first stage (1) is capable of conveying the sheet.

5. Cutting mechanism according to claim 1, characterized in that the first cutting blade (3) and the second cutting blade (4) are detachably connected to the first carrier (1) and the second carrier (2), respectively.

6. Cutting mechanism according to claim 1, characterized in that the first cutting blade (3) and the second cutting blade (4) are connected to the first carrier (1) and the second carrier (2) in a position-adjustable manner, respectively.

7. Cutting mechanism according to claim 1, characterized in that the first cutting knife (3) and the second cutting knife (4) are made of ceramic.

8. Cutting mechanism according to claim 1, characterized in that the cutting edges of the first (3) and second (4) cutters are provided with an anti-adhesive coating.

9. A film stripping apparatus, comprising:

the cutting mechanism according to any one of claims 1 to 8; and

and a film peeling mechanism arranged at the downstream of the cutting mechanism, wherein the film peeling mechanism is configured to peel the release film (22) and the bonding layer (21) from the sheet except for the cut.

10. A battery piece laminating apparatus, comprising the cutting mechanism according to any one of claims 1 to 8, wherein:

the sheet material is a battery piece (10);

the membrane material is a carrier membrane loaded with a welding strip;

the first carrying table (1) and the second carrying table (2) can be kept for a preset time length when the sheet and the membrane are pressed.