CN218548589U

CN218548589U - Aluminum-plastic film packaging shell suitable for lithium battery

Info

Publication number: CN218548589U
Application number: CN202221813988.XU
Authority: CN
Inventors: 王国文
Original assignee: Fujian Super Power New Energy Co ltd
Current assignee: Fujian Super Power New Energy Co ltd
Priority date: 2022-07-13
Filing date: 2022-07-13
Publication date: 2023-02-28
Anticipated expiration: 2032-07-13

Abstract

The utility model discloses an aluminum-plastic film packaging shell suitable for a lithium battery, which belongs to the technical field of aluminum-plastic film packaging and comprises an upper shell and a lower shell which are superposed up and down; the upper shell and the lower shell respectively comprise a first groove and a second groove which are integrally processed; the first groove and the second groove are oppositely oriented; the groove length and the groove width of the first groove are both smaller than those of the second groove; the bottoms of the first grooves are abutted, and the second grooves surround a closed space; the situation that the shell is attached and the electrolyte can be injected only by cooperation of a plurality of actions is avoided by punching the first groove with the bottom of the groove butted against each other; the baking efficiency of the battery cell is ensured, and the subsequent electrolyte injection work is facilitated; the device has simple structure and convenient operation; the problems that when the existing processing technology is used for manually placing the Teflon glue stick, the inner layer of the aluminum-plastic film is scratched due to improper operation of workers, the labor cost is high, and full-automatic production is not facilitated are effectively solved.

Description

Aluminum-plastic film packaging shell suitable for lithium battery

Technical Field

The utility model belongs to the technical field of the plastic-aluminum membrane packing, in particular to plastic-aluminum membrane packing casing suitable for lithium cell.

Background

The aluminum plastic film is a necessary packaging material of the soft package lithium battery and mainly plays a role in protecting the internal battery core. Due to the advantages of flexible shape and size, light design, large specific capacity and the like, the soft package lithium battery is widely applied to the fields of consumer electronics and new energy automobiles.

But current soft-packaged electrical core is drying's in-process, and the condition of automatic laminating appears easily in the plastic-aluminum membrane of parcel electric core, and this will seriously influence the efficiency of toasting of electric core, also be convenient for inject the electrolyte into electric core yet. The existing processing technology is that a Teflon rubber rod is manually put in before baking the battery core to be used as a support, and the battery core is taken out after baking is finished; although the method is beneficial to baking the battery core, when the glue stick is placed in and taken out, the inner layer of the aluminum-plastic film is often scratched due to improper operation of workers, in addition, when electrolyte is injected, the liquid injection work can be carried out after the opening of the air bag of the aluminum-plastic film is still required to be opened, the operation difficulty and the labor cost can be increased, and meanwhile, the full-automatic production is not facilitated. Therefore, it is necessary to design an aluminum-plastic film packaging case which can not only ensure the baking efficiency of the battery cell, but also facilitate the injection of the electrolyte.

SUMMERY OF THE UTILITY MODEL

In order to overcome the defects of the prior art, the utility model aims to solve the technical problems that: how to provide one kind can enough guarantee that electric core toasts efficiency, can be convenient for the plastic-aluminum membrane packaging shell of electrolyte injection again.

In order to solve the technical problem, the utility model discloses a technical scheme be: an aluminum plastic film packaging shell suitable for a lithium battery comprises an upper shell and a lower shell which are overlapped up and down; the upper shell and the lower shell respectively comprise a first groove and a second groove which are integrally processed; the first groove and the second groove are oppositely oriented; the groove length and the groove width of the first groove are both smaller than those of the second groove; the groove bottoms of the first grooves are abutted, and the second grooves surround to form a closed space.

Wherein, the length of the upper shell and the lower shell is 300 mm-1000 mm, and the width is 500 mm-900 mm.

Wherein, the upper shell and the lower shell are at least provided with 2 first grooves which are evenly distributed; the distance between the first grooves is 10 mm-150 mm; the depth of the first groove is 3 mm-10 mm.

An unsealed area is reserved on the periphery of the first groove and the second groove; the reserved width of the unsealed area is 5-40 mm.

Wherein, go up casing and lower casing from inside to outside in proper order be CPP layer, aluminium foil layer and nylon layer.

Wherein the thickness of the CPP layer is 20-100 mu m.

Wherein the thickness of the aluminum foil layer is 20-60 μm.

Wherein the thickness of the nylon layer is 10-50 μm.

And the CPP layer, the aluminum foil layer and the nylon layer are bonded by adhesives.

Wherein the thickness of the bonding layer formed by the adhesive is 2-10 μm.

The beneficial effects of the utility model reside in that: the utility model provides a plastic-aluminum membrane packaging shell suitable for lithium cell simple structure, low cost through last casing and the first recess that the punching press tank bottom offseted on the casing down, appear the casing laminating when can avoiding toasting, and need a plurality of actions in coordination just can pour into the condition of electrolyte into, and the toasting efficiency of electric core has both been guaranteed in this design, also is convenient for follow-up pour into electrolyte into to electric core into.

Drawings

Fig. 1 is a schematic structural diagram of an aluminum-plastic film packaging case suitable for a lithium battery according to an embodiment of the present invention;

fig. 2 is a top view of an aluminum plastic film package casing for a lithium battery according to an embodiment of the present invention;

fig. 3 is a front view of an aluminum-plastic film package casing for a lithium battery according to an embodiment of the present invention;

FIG. 4 is an enlarged view of FIG. 3 at A;

description of reference numerals:

1. an upper housing; 2. a lower housing; 3. a first groove; 4. a second groove; 5. an unsealed area.

Detailed Description

In order to explain the technical contents, the objects and the effects of the present invention in detail, the following description is made with reference to the accompanying drawings in combination with the embodiments.

The utility model discloses the most crucial design lies in: through the first recess that last casing and lower casing go up the counterbalance of punching press tank bottom, appear the casing laminating when avoiding toasting, and need a plurality of actions just can pour into the condition of electrolyte in coordination.

Referring to fig. 1 to 3, the aluminum-plastic film package case for a lithium battery provided by the present invention includes an upper case 1 and a lower case 2 stacked up and down; the upper shell 1 and the lower shell 2 both comprise a first groove 3 and a second groove 4 which are integrally processed; the first groove 3 and the second groove 4 are oppositely oriented; the groove length and the groove width of the first groove 3 are both smaller than those of the second groove 4; the groove bottoms of the first grooves 3 are abutted, and the second grooves 4 enclose a closed space.

From the above description, the beneficial effects of the present invention are: the aluminum-plastic film packaging shell suitable for the lithium battery is provided, the situation that the shell is attached during baking and electrolyte can be injected only by cooperation of a plurality of actions is avoided by stamping the first groove 3 with the bottom of the groove butted against the upper shell 1 and the lower shell 2, so that the baking efficiency of a battery cell is ensured, and the electrolyte can be conveniently injected into the battery cell subsequently; this plastic-aluminum membrane packaging shell suitable for lithium cell low cost, simple structure, convenient operation compare with current processing technology, can avoid placing the in-process that the iron fluorine dragon glued the stick in the manual work, lead to the phenomenon of plastic-aluminum membrane inlayer fish tail because of staff's misoperation, have reduced the cost of labor simultaneously and have been favorable to full automated production.

Further, the upper case 1 and the lower case 2 have a length of 300mm to 1000mm and a width of 500mm to 900mm.

As can be seen from the above description, the design can facilitate packaging of cells of various specifications.

Furthermore, at least 2 first grooves 3 which are uniformly distributed are arranged on the upper shell 1 and the lower shell 2; the distance between the first grooves 3 is 10 mm-150 mm; the depth of the first groove 3 is 3 mm-10 mm.

From the above description, the design can further avoid the case adhesion during baking and the situation that the electrolyte is injected only by the cooperation of multiple actions.

Further, the groove length of the first groove 3 is 100 mm-300 mm; the width of the first groove 3 is 10 mm-100 mm; the length of the second groove 4 is 200 mm-800 mm; the width of the second groove 4 is 400 mm-800 mm. The design ensures that the first groove 3 can effectively support the upper shell 1 and the lower shell 2; and the second groove 4 can better wrap the battery cell.

Furthermore, an unsealed area 5 is reserved on the periphery of the first groove 3 and the second groove 4; the reserved width of the unsealed area is 5 mm-40 mm.

From the above description, this design provides sufficient reserve volume for the banding work, avoids appearing the unable fashioned condition of encapsulation because of electric core oversize.

Furthermore, the upper shell 1 and the lower shell 2 are a CPP layer, an aluminum foil layer and a nylon layer from inside to outside in sequence.

As can be seen from the above description, the nylon layer of the outer layer can protect the aluminum plastic film packaging shell; the aluminum foil layer of the middle layer can play an insulating effect; the CPP layer of the inner layer is used for packaging the aluminum plastic film packaging shell.

Further, the thickness of the CPP layer is 20-100 μm.

As can be known from the above description, the CPP layer with the proper thickness can be selected according to the design requirement, and the heat sealing effect of the aluminum plastic film packaging shell is ensured.

Further, the thickness of the aluminum foil layer is 20 to 60 μm.

As can be seen from the above description, the design can ensure that the aluminum plastic film packaging shell has a thinner thickness and can also achieve an obvious insulation effect.

Further, the thickness of the nylon layer is 10 μm to 50 μm.

As can be seen from the description, the design ensures that the aluminum plastic film packaging shell is light and portable as a whole and can play a remarkable protection role on the aluminum plastic film packaging shell.

Furthermore, the CPP layer, the aluminum foil layer and the nylon layer are bonded by adhesives.

As can be known from the above description, this design guarantees to bond fully between CPP layer, aluminium foil layer and the nylon layer, avoids taking place to drop to influence product quality.

Furthermore, the thickness of the adhesive layer formed by the adhesive is 2-10 μm.

As can be seen from the above description, the design can fully adhere the CPP layer, the aluminum foil layer and the nylon layer through the thinner bonding layer, and further ensures the overall portability of the aluminum plastic film packaging shell.

The utility model discloses an aluminium-plastic film packing casing suitable for lithium cell can be used to the packing work of lithium cell.

The embodiment of the utility model discloses a do:

referring to fig. 1 to 3, an aluminum plastic film packaging case suitable for a lithium battery includes an upper case 1 and a lower case 2 stacked up and down; the length of the upper shell 1 and the lower shell 2 is 800mm, and the width is 600mm; the upper shell 1 and the lower shell 2 both comprise a first groove 3 and a second groove 4 which are integrally processed; the upper shell 1 and the lower shell 2 are at least provided with 2 first grooves 3 which are uniformly distributed; the distance between the first grooves 3 is 150mm; the depth of the first grooves is 5mm, and preferably, the number of the first grooves is 5; the first groove 3 and the second groove 4 are oppositely oriented; the groove length and the groove width of the first groove 3 are both smaller than those of the second groove 4, preferably, the groove length of the first groove 3 is 100mm, the groove width of the first groove 3 is 15mm, the groove length of the second groove 4 is 750mm, and the groove width of the second groove 4 is 400mm; the groove bottoms of the first grooves 3 are abutted, and the second grooves 4 surround to form a closed space.

An unsealed area 5 is reserved on the peripheries of the first groove 3 and the second groove 4; the width of the open area 5 is reserved to be 30mm.

The upper shell 1 and the lower shell 2 are respectively a CPP layer (not shown in the figure), an aluminum foil layer (not shown in the figure) and a nylon layer (not shown in the figure) from inside to outside in sequence; the thickness of the CPP layer is 80 mu m; the thickness of the aluminum foil layer is 40 μm; the thickness of the nylon layer is 25 μm; the CPP layer, the aluminum foil layer and the nylon layer are bonded by adhesives; the thickness of the adhesive layer (not shown in the figure) formed by the adhesive is 2 μm, preferably, a PET layer may be further disposed on the outer side of the nylon layer, the thickness of the nylon layer is 12 μm, the thickness of the PET layer is 12 μm, the nylon layer and the PET layer are adhered by the adhesive, and the thickness of the adhesive layer formed by the adhesive is 1 μm.

The utility model discloses a theory of operation does: attaching the second grooves 4 of the upper shell 1 and the lower shell 2 to the battery cell, wherein the bottoms of the first grooves 3 of the upper shell 1 and the lower shell 2 are just abutted; putting the aluminum plastic film packaging shell which is wrapped with the battery cell and is subjected to pre-edge sealing into a vacuum dryer for drying operation; after drying, injecting a specified amount of electrolyte into the cell main body through the gap between the first grooves 3; and finally, completely sealing the edges by using a heat sealing device, thereby finishing the packaging work of the lithium battery.

To sum up, the utility model provides an aluminum plastic film packaging shell suitable for a lithium battery, which has simple integral structure, low cost and convenient operation; the first grooves pressed against the bottoms of the grooves are punched on the upper shell and the lower shell, so that the situation that the shells are attached to each other and electrolyte can be injected only by cooperation of a plurality of actions is avoided, the baking efficiency of the battery cell is ensured, and the electrolyte can be conveniently injected into the battery cell in the follow-up process; the defects that the inner layer of the aluminum plastic film is scratched due to improper operation of workers and the labor cost is high and full-automatic production is not facilitated in the process of manually placing the Teflon glue rod by the existing processing technology are overcome.

The above mentioned is only the embodiment of the present invention, and not the limitation of the patent scope of the present invention, all the equivalent transformations made by the contents of the specification and the drawings, or the direct or indirect application in the related technical field, are included in the patent protection scope of the present invention.

Claims

1. An aluminum plastic film packaging shell suitable for a lithium battery is characterized by comprising an upper shell and a lower shell which are overlapped up and down; the upper shell and the lower shell respectively comprise a first groove and a second groove which are integrally processed; the first groove and the second groove are oppositely oriented; the groove length and the groove width of the first groove are both smaller than those of the second groove; the groove bottoms of the first grooves are abutted, and the second grooves surround to form a closed space.

2. The aluminum plastic film packing case for a lithium battery as claimed in claim 1, wherein the upper case and the lower case have a length of 300mm to 1000mm and a width of 500mm to 900mm.

3. The aluminum-plastic film packaging shell suitable for the lithium battery as recited in claim 1, wherein at least 2 first grooves are uniformly arranged on the upper shell and the lower shell; the distance between the first grooves is 10 mm-150 mm; the depth of the first groove is 3 mm-10 mm.

4. The aluminum plastic film packaging shell suitable for the lithium battery as recited in claim 1, wherein an unsealed area is reserved on the periphery of the first groove and the second groove; the reserved width of the unsealed area is 5-40 mm.

5. The aluminum plastic film packaging shell for the lithium battery as recited in claim 1, wherein the upper shell and the lower shell are respectively a CPP layer, an aluminum foil layer and a nylon layer from inside to outside.

6. The aluminum plastic film packing case for a lithium battery as claimed in claim 5, wherein the thickness of the CPP layer is 20 μm to 100 μm.

7. The aluminum plastic film packing case for a lithium battery as claimed in claim 5, wherein the thickness of the aluminum foil layer is 20 μm to 60 μm.

8. The aluminum plastic film packing case for a lithium battery as claimed in claim 5, wherein the nylon layer has a thickness of 10 to 50 μm.

9. The aluminum plastic film packaging shell suitable for the lithium battery as recited in claim 5, wherein the CPP layer, the aluminum foil layer and the nylon layer are bonded by adhesives.

10. The aluminum-plastic film packaging shell suitable for the lithium battery as recited in claim 9, wherein the adhesive layer is formed to have a thickness of 2 μm to 10 μm.